Power supply system

FIELD: power engineering.

SUBSTANCE: proposed power supply system generating electric power using self-forming gas contains gas motor, gas turbine, gas collector for self-forming gas, device to separate gas and device to control calorific value for selective mixing of gases differing in content of fuel component. Gas separating device continuously separates gas delivering from gas collector whose fuel component content changes in time according to content of fuel component of gas. Calorific value control device for selective mixing of gases differing in content of fuel component which are separated by gas separating device, controls content of fuel component of gas which is to be supplied to gas motor and gas turbine. System control device is provided to control operation of gas motor, gas turbine and calorific value control device.

EFFECT: provision of power supply system maintaining stable generation of power, irrespective of changes of amount of self-forming gas and its calorific value.

13 cl, 8 dwg

 

The technical field to which the invention relates.

The present invention relates to a power supply system. More specifically the present invention relates to a power supply system that collects samoobrazovaniya gas and generating electricity through the use of the collected gas as fuel.

The level of technology

There are various flammable Samoobrona gases. For example, a gas of a coal seam (also referred to as Coal mine Gas and simply referred to as AWG)contained in coal seams, gas, biomass, resulting from the fermentation and decomposition of General waste or waste from agriculture and livestock, and so on. In particular, because of the Carboniferous strata in which the coals are in large numbers, there are in the world, on earth there are a large number AWG. When coal seams are developed to obtain coal, CWG is collected and given in advance to ensure security in the continuation of mining activities. The number of CRF and the content of the combustible component (much of which is methane) in KRG change over time. Change the content of the combustible component in the gas means that gas has different caloric value.

Virtually all of CRF produces the I in the atmosphere around the coal mines or adjacent to residential areas, moreover, the gas of high caloric value (high-calorific gas) is collected and used in the city as domestic gas, while the gas is low calorie (low gas) is released into the atmosphere unused, because of the low calories is not sufficient for its use as a household gas. In addition, the number of soobrazuyas high-BTU gas is changed, and therefore there is a need in the huge equipment for gas storage, which saves a large number of high-BTU gas for sustainable delivery.

Previously proposed technologies for use soobrazuyas gas type AWG for power generation. For example, there was proposed a system in which the generator with a gas engine that produces a given amount of electricity using samoobrazovaniya low-calorie gas, and another generator with a gas engine that produces a given amount of electricity using high-calorific gas (standard gas), combine to through this to ensure the development of energy when switching gas supply in these generators and their working conditions (for example, see Japanese published patent application No. 2002-202006). This system is designed to eliminate the use of huge gas storage, which can be stored when soobrazuya gas, through the additional use of a standard domestic gas.

However, since the calorific value and the number AWG constantly irregularly change management system and process for full use of the KRG becomes more complex. In particular, since the electricity produced by natural gas engines, including gas engines, which can be started and stopped in accordance with the change in the amount of gas that must be well managed. This inevitably leads to a re-start and stop certain gas engines so often that it may lead to a reduction in durability of gas engines and instability of the network energy distribution. In addition, essentially requires a sustainable supply of domestic gas, and therefore, in order to achieve the above-described system in the areas of coal mining or dumpsites, is required to prepare such large-scale infrastructure, as the system supply of domestic gas.

Meanwhile has been proposed a technology in which electricity is produced by gas turbines using CRF as fuel, and the resulting carbon dioxide as an exhaust gas, is fed into the coal seams and associated there with air, in which there is no oxygen (for example, see publikac the Yu Japanese published patent application No. 2003-74372). However, this document does not disclose a system or method of sustainable energy production through efficient consumption of low-calorie gas constant regardless of changes in the number and energy of soobrazuyas gas, which are the main characteristics of the AWG.

The invention

The present invention was developed to solve the above problems, and the purpose of the present invention is to provide a power supply system that can support sustainable energy production or the like regardless of the constant changes in the number of filing of soobrazuyas gas and constant changes of its calorific value.

To achieve the above purpose, the power supply system includes a gas engine; gas turbine; a device for gas gathering, collecting the generated gas; a device for the separation of gas, continuously separating the gas from the device to collect the gas, and the content of the combustible component which varies in time in accordance with the content of a combustible gas component; a device for controlling calories for selective mixing of gases having a different content of the combustible component, which are separated by a device for separation of gases to regulate the content of g is ruego component gas, which should be supplied to the gas engine and the gas turbine; and a device control system to control the operation of the gas engine, gas turbine and a device for regulating caloric content.

In accordance with this system, it is possible to separate the collected gas in accordance with the content of the combustible component contained therein, to operate the gas turbine by changing the load, to adjust the caloric value of the gas, so it was constant within a predetermined range, by means of the device for controlling calories and so on. Through this, despite the constant change in the amount of produced gas, as well as change the content of a combustible gas component, it is possible to avoid excessive gas consumption and lower efficiency of energy production in the system due to such changes. In addition, samoobrazovaniya gas low in calories, which is produced in the atmosphere, can be used as a new source of energy that does not change during use. Samoobrazovaniya gas may include coal mine gas, gas, biomass, resulting from the fermentation and decomposition of wastes, combustible gas produced from polluting sewage sludge or waste disposal sites and so forth. As used here, ha is the new engine refers to porshneva the engine, in which the gas is fed into the cylinder as fuel and burned in him, and his power of rotation is used to generate electricity.

The power supply system may further comprise: a device for monitoring the balance amount of gas for monitoring balance of supply and requirements between the quantity of gas consumed by the gas engine and gas turbine operating conditions, and the amount of gas supplied from the device to control the calorie content in the gas turbine and gas engine, and the device management system is designed to control the operation of at least one of: gas engine, gas turbine and device for regulating caloric content based on the signal from the device for monitoring the balance amount of gas.

The power supply system may further comprise a device for release, made on the channel for supplying gas through which the gas is fed into the gas turbine and gas engine to release the gas through the channel for supplying gas to the outside, and the device management system is designed to control the operation of the device for release on the basis of the signal from the device for monitoring the balance amount of gas. The device management system is designed to supply commands to the device to issue the ka, to get it to release the gas based on a signal showing the excess gas, which is supplied from a device for monitoring the balance of the amount of gas or command to the device to release to get it to stop producing gas on the basis of the signal indicating the absence of gas, which is supplied from a device for monitoring the balance amount of gas.

Preferably, the power supply system may additionally include a heat recovery boiler connected with a gas turbine. Through this, the above requirement can be satisfied. Also the power supply system may further comprise a steam turbine in the exhaust-heat boiler, and through the implementation of this energy efficiency can be further enhanced.

A device for the separation of gases may include, as main components, the meter fuel component, continuously measuring the content of the combustible component in the gas, the assembled device for gas gathering, multiple channels for gas supply through which served gases in accordance with the ranges of the content of the combustible component and a means for changing channels, selecting one of the multiple channels for gas supply on the basis of measurement results by measuring the combustible component and performing lane is turning on the selected channel for gas flow.

A device for controlling the calorie content may include, as main components, a lot of channels for supplying the gases, which are gases that are separated in accordance with the content of the combustible component through a device for separating gas channel for supplying mixed gas to which are connected multiple channels for gas flow, and a channel for supplying the mixed gas passes into the gas engine and gas turbine, and means for opening and closing to regulate open multiple channels for gas supply. In this construction the gases with different content of combustible components can be mixed, to allow gas to have a predetermined content. Also, in addition to multiple channels for gas flow, a device for controlling the calorie content may optionally include a channel for air supply, to supply the air. This facilitates the regulation of the content of the combustible component.

Preferably, the device for regulating caloric included meter fuel component with feedback performed on the channel for supplying the mixed gas, and a device to control the regulation of calorie management tool for opening and closing to ensure the installation of the content of combustible components the NTA in the prescribed range based on the measurement results by measuring the combustible component with feedback. In this layout you can change the content of the combustible component.

In the power supply device for monitoring the balance amount of gas can be performed on the channel for supplying the mixed gas passing out of the device for controlling the calories in the gas engine and gas turbine, and a device for monitoring the balance amount of gas may include, as main components, a closed container connected to the channel for supplying the mixed gas, a pressure sensor for determining the internal pressure in the closed container and the first balance sensor for determining the degree of balance of supply and requirements through a comparison between the results of the pressure sensor and installed the original pressure. In this arrangement, when the amount of gas increases or decreases relative to the number of the desired gas (the amount of gas that should be used a gas engine and gas turbine), the pressure in the closed container, respectively, is increased or decreased. Thus can be easily determined by the degree of balance of supply and requirements of gas.

In the power supply device for monitoring the balance amount of gas can be performed on the channel for supplying the mixed gas passing from the device for regulating calories and in the gas engine and the gas turbine, and device for monitoring the balance amount of gas may include, as main components, the container having an aperture at the upper end and designed to connect with a channel for supplying the mixed gas, the top cover is configured to move vertically along the inner side of the container and sealed closing openings at the upper end of the container, the position sensor to determine the position of the top cover moves vertically in accordance with the change in the internal pressure in the container, and a second balance sensor for determining the degree of balance of supply and requirements for gas-based definition signal from the position sensor. Also in this design can be easily determined by the degree of balance of supply and requirements of gas.

In the power supply system device management system can be made to perform a control for regulating at least one gas turbine in operational mode in accordance with the change in the number of gas supply in the continuation of the work as a gas engine or gas turbine. A gas turbine can easily change their load in the continuation of the work, and this characteristic is especially important when a smooth change of the number of gas supply. On the other hand, the gas engine has boliviano the efficiency of energy production, than the efficiency of the gas turbine, and less susceptible to temperature changes of the atmosphere, and therefore this arrangement is more effective and efficient than gas engines, which produce electricity by burning gas (within the range of sustainable amount of produced gas, which is not greater than the minimum quantity of generated gas). Thus, energy efficiency is increased further, and the durability of the system lasts longer. In this case, the device management system may be so designed as to operate all of the controls in accordance with the signal indicating the change in the quantity of gas flow from the device to monitor the balance amount of gas.

Option exercise of the power supply system according to the present invention will be described with reference to the accompanying drawings.

Brief description of drawings

Figure 1 - block diagram of part of the system in accordance with the embodiment of the present invention;

Figure 2 - block diagram of another part of the system in accordance with the embodiment of the present invention;

Figure 3 - block diagram of an example device for separating gas in the system from figure 1;

4 is a block diagram of an example device for regulating caloric gas in the system from figure 1;

5 is a block diagram the example of the device for monitoring the balance of the amount of gas in the system from figure 1;

6 is a block diagram of another example of the device for monitoring the balance of the amount of gas in the system from figure 1;

Fig.7 is a graph showing the relationship between the change of the amount of generated gas and the amount of gas consumed gas engines and gas turbines in the system with figures 1 and 2; and

Fig is a graph illustrating the relationship between the amount of generated gas and the operational mode of the system from figure 1 and 2.

The optimal way of carrying out the invention

Figure 1 and figure 2 are block diagrams, each showing a power supply system (hereinafter simply referred to as system 1 in accordance with the embodiment of the present invention. For convenience, the system 1 is illustrated as divided into two parts, but these parts are connected as a unit with each other. The right end of the pipe 50 for supplying the mixed gas 1 is connected with the left end of the pipe 50 for supplying the mixed gas in figure 2. Thus, figure 1 shows the collection system of the source gas in this system, and figure 2 shows a system that includes gas engines and gas turbines to produce electricity and heat from the collected gas. The above-described system according to figure 1 and figure 2 are connected to each other through pipes, control cables, and so on figure 1 and figure 2 as sources of soobrazuyas gas shows cavity M in the mine and coal seam C. The gas collected from the Carboniferous strata C and cavities M in the mine, called Coal Mine Gas containing methane as a main combustible component. System 1 is made with the possibility of burning methane as fuel and generate electricity and heat (steam, hot water, etc) from its heat.

As shown in figure 1, the holes 2 for gas collection is made in coal seams cavities C M coal. Holes 2 for collection are designed to collect methane contained in coal seams With, before begin production in order to minimize the leakage of methane in the cavity M in the mine where miners are working. Holes 2 for the collection is made in each of the Carboniferous strata C, in each neighborhood of the cavity M in the mine. To ensure safe production, collection efficiency of combustible gases, such as methane, and to minimize leakage of combustible gases in the cavity M in the mine, the required number of holes 2 for the collection is made in coal seams C. 2 Holes for gas gathering connected with gas engines 3 and the gas turbines 4 (see figure 2) through the piping 5, 11 and 50. Various devices are installed in the piping 5, 11 and 50. Further assume that these devices are installed in the piping 5, 11 and 50. First installed the device 6 to the suction fan or the like, which sucks gas from the holes 2 for the collection. The device 6 for suction and port 2 to collect form a device for collecting gas. The flow meter 7 is installed on the pipeline 5.

The device 8 for the separation gas supplied from the side of the lower flow than the gas flow of each device 6 for suction. The device 8 for separation of gas intended for the detection and separation of the collected gas in accordance with the content of a combustible gas component (hereinafter represented by methane)as will be described in detail later. Many types of gases (three types of gases in this embodiment), classified in accordance with the concentration of methane is distributed through the pipes 11, 12 and 13. Gas containing methane with a high concentration, is called high-calorie gas; gas containing methane with a low concentration is called the low-calorie gas, and a gas containing methane with an intermediate concentration, called the gas from the intermediate value. Low-calorie gas is fed into the pipeline 11. Gas with intermediate calorie is served in the pipeline 12. High-calorie gas is fed into the pipe 13. As defined here, in this embodiment, high-calorie gas contains 60 or more % by volume of methane, a gas with intermediate calorie contains not less than 40 %by volume, and less CEM % by volume of methane, and low-calorie gas contains less than 40 % by volume of methane. By example, in this embodiment, the gas is classified into three types of gases, but this classification is only illustrative. As will be described later, the gas can be divided into four or more types of gases.

High-calorie gas, used as an industrial source gas, is collected separately and fed to the point of consumption U1. Gas with intermediate calorie used as cooking gas, is collected separately and fed to the point of consumption U2. Low-calorie gas is mainly used as the source gas in the system 1, while the high-calorie gas and gas with intermediate calorie partially used, if necessary, to adjust the concentration of the low-calorie gas. This only happens because the gas made from coal seams C, is constantly unstable flow per unit of time and/or concentration of methane.

The relief valve 9 is made between the device 6 to the suction device 8 for separation of gas to release into the atmosphere of the collected gas. The safety valve 9 releases the collected gas to ensure the safety of coal production even in the continued maintenance or malfunction of device 8 to split the gas.

The pipe 11 for supplying n is schokoriegel gas passes from the device 8 for separating gas and is connected to the device 10 for regulating caloric gas. A filter device for cleaning gas) 14 performed on the pipe 11 for supplying a low-calorie gas passing into the device 10 for regulating caloric gas. The device 10 for regulating caloric gas is intended to regulate the concentration of methane in the low-calorie gas supplied to the device 10 in order to maintain stable combustion in gas engines 3 or gas turbines 4, as will be described later. The device 10 for regulating caloric gas is intended to regulate the concentration of methane as a fuel component and, therefore, may be referred to as a device for alternative regulation calorific value. The pipe 50 for supplying the mixed gas passes from the device 10 for regulating caloric gas to the sites E and T, where installed gas engines 3 and the gas turbine 4.

When the concentration of methane in the low-calorie gas supplied to the device 10 for regulating caloric gas pipe 11 for supplying a low-calorie gas is within the allowable range, the device 10 for regulating caloric gas delivers the low-calorie gas in the pipe 50 for supplying the mixed gas from downstream. On the other hand, when the concentration of methane changes and becomes above or below a valid d is Upasana, then the air, high-calorie gas or gas with intermediate calorie selectively mixed with the low-calorie gas to adjust the concentration. For this purpose, the outlet 13a of the pipeline from the pipeline 13 for high calorific gas, the outlet 12a extends from the pipeline 12 for gas with intermediate calories, and the pipe 15 for supplying air, each connected to the device 10 for regulating caloric gas. The pipes 12a, 13a and 15 are supplied with the device 46 for cleaning (including filters)are designed to remove dust or the like, and boosters 47 (e.g., fans), intended to supply gas under pressure to the device 10 for regulating caloric gas.

The device 16 for monitoring the balance of the amount of gas made from downstream than the device 10 for regulating caloric gas, and is connected through line 50 to supply the mixed gas. The device 16 for monitoring the balance amount of gas is intended to implement the balance of the amount of gas supplied from upstream, and the amount of gas which must be consumed gas 3 engines or gas turbines 4, as will be described later. Due to changes in the amount of gas collected from coal seams C that requires the device 16 to monitor the ring balance the amount of gas to balance the amount of gas and the amount of gas consumed gas 3 engines or gas turbines 4. If it happens that gas filed in excess, the excess gas is vented to the atmosphere, while if the gas submitted in sufficient number, some of the gas turbines with less stress than other gas turbines stop, as will be disclosed hereinafter. In another case, the device 10 for regulating caloric gas mixes ambient air with a high-calorie gas or gas with intermediate calories to produce the required amount of low-calorie gas and to supply gas to feed in the absence of low-calorie gas.

As shown in figure 2, the main components, such as gas engines 3, the gas turbine 4, heat recovery steam generators 19 and the steam turbine 17 are designed to generate electricity and steam and hot water with gas, collected from coal seams C as fuel. The pipe 50 for supplying the mixed gas according to figure 1 branches into pipes 50a and 50b through which fuel gas is fed to the space E for engines and site T for turbines. The pipe 50a, passing on the space E for engines, and the pipe 50b, passing on the space T for turbines, respectively, have shut-off valves 23.

Many gas engines 3 is made on the space E for engines. One generator 18 is connected with the corresponding gas engine E and is configured to generate electricity. While four gas engine 3 used in this embodiment, not intended to limit the number three gas engines, but it can be a one, two, three, or five, or more, as needed. Many gas engines 3 would be better used for the continuation of power generation, when any of the engine 3 has a malfunction or stops for maintenance. Hot water obtained by cooling the gas engines 3, and hot water produced by the boiler, in which the exhaust gas from the gas engines 3, is fed to the places of consumption U3.

System cogeneration combined cycle performed, for example, on the space T for turbines. In this system, as the gas turbine 4, and the steam turbine 17 is arranged to produce electricity in the most efficient way. Also the system is a joint development, which may also serve couples. Specifically, each of the generator 18 is connected to a corresponding gas turbine 4 and is designed to generate electricity in Addition, there are HRSG 19 (hereinafter referred to simply as boilers for generation of steam by using the heat of the gas discharged from the gas turbine 4, and the steam supply to the steam turbine 17, described later, and the point of consumption U4, which is consumed directly by steam. Control valve 45 of the expenditure made by downstream than boilers 19 to regulate the supply of steam to the point of consumption U4. The generator 18 is connected with a steam turbine 17. When you need a larger quantity of steam in the sequel, for example, winter, steam, directly supplied from the boiler 19 to the point of consumption U4 increases, whereas when you need a small amount of steam in the sequel, for example, summer, steam supplied from the boiler 19 to the steam turbine 17 increases for energy production. They are managed in accordance with the command from the device 100 of the control system, as discussed next.

While in this embodiment, there are three gas turbines 4 and one steam turbine 17, this number is not intended to limit, i.e. it can be increased as planned and desirable. If each of the gas turbine 4 is used for the corresponding steam turbine 17, they can both be connected to each other on the same shaft, and one generator 18 may be connected with the shaft. Also, instead of the block to generate the power of the combined cycle, described in this embodiment may be adopted by a simple loop. A simple loop is designed to generate electricity through the use of gas turbines without steam turbines. The system of joint development of the closed cycle can be carried out by using a simple loop. Through the installation of boilers after gas turbines residual heat in the exhaust gas can be recovered in pairs. Further, as in the combined cycle and simple cycle, there is no need to adopt the system of joint development, if there is no need in the residual heat for purposes other than energy production.

As shown in figure 2, the pipes 50a and 50b for supplying the mixed gas are increasing pressure fan 20 for supplying fuel gas under pressure in the gas engines 3 and the compressor 21 for supplying fuel gas under pressure in the gas turbine 4, respectively. These means for increasing the gas pressure is selected so as to create a gas pressure in accordance with the components that should be used (engine or turbine). Specifically, the fan 20 is used for supplying a gas under a relatively low pressure in the gas engines 3, while the compressor 21 is used for supplying a gas under relatively high pressure in the gas turbine 4. The filter 22 will is replaced by downstream, each fan 20 and the compressor 21 to remove dust from the gas.

Figure 3 shows the above-described device 8 to split the gas. The device 8 for separating gas pipeline 5 branches into pipes 11, 12 and 13. The device 8 for separation of gas contains the probe 24 of the combustible component (calorimeter)installed on the pipeline 5, control valves 25, respectively, performed on the pipes 11, 12 and 13, and the device 26 controls the separation of the gas to control the opening and closing of the control valves 25 in accordance with the methane concentration in the collected gas. The calorimeter 24 is a meter of methane concentration for continuous measurement of methane content in the collected gas.

The device 26 to control the separation of the gas opens the control valve 25 on the pipes 11, 12 and 13 on the basis of information in real time, showing the methane concentration in the collected gas from the calorimeter 24 and closes the control valves 25 on other pipelines. With this arrangement, the low-calorie gas is fed into the pipeline 11, the gas from the intermediate calorie is served in the pipeline 12, and high-calorie gas is fed into the pipe 13. The device 8 for separating gas can feed gases with defined concentrations of methane in the pipes 11, 12 and 13, respectively, not avisio from changes in methane concentration in the collected gas. As a calorimeter can be used the usual model measuring the concentration of methane.

While the collected gas is classified into three types of gases in accordance with the concentration of methane, that is, high-calorie gas, gas with intermediate-calorie and low-calorie gas, the collected gas can be classified into two or four or more types of gases. For example, low-calorie gas containing less than 40 % by volume of methane, can be further classified into low-calorie gas containing a concentration in the range of from 20 vol % to 40 vol % of methane, and low-calorie gas containing a concentration of less than 20 % by volume of methane. When this device 10 for regulating caloric gas, which will be described later, can regulate caloric content only through the use of the collected gas without supply pipe 15 for supplying air. This change in the standard for classification could therefore be carried out in accordance with the command from the control device 100, which will be described later, the device 26 controls the separation of the gas.

Figure 4 shows a device 10 for regulating caloric gas. The pipeline 11 to a low-calorie gas pipeline 12A for gas with intermediate calorie, battery, speaker, buzzer is 13A for high-BTU gas and the pipe 15 for supplying air, each is connected to the device 10 for regulating caloric gas. More specifically, the pipe 12A for gas with intermediate calorie, pipe 13A for high-BTU gas and the pipe 15 for supplying air is connected to the pipe 11 to the low-calorie gas passing through the device 10 for regulating caloric gas. The device 10 for regulating caloric gas contains flowmeters 27a, 27b, 27c and 27d, control valves 28a, 28b, 28c and 28d flow installed on the piping 11, 12a, 13a and 15, and the calorimeters 29a, 29b and 29c, installed on the piping 11, 12a and 13a for gas supply. In addition, the device 10 for regulating caloric gas calorimeter contains 30 mounted on the pipe 50 for supplying the mixed gas. Additionally, the device 10 for regulating caloric gas contains device 32 to control the regulation of caloric content.

In the device 32 to control the regulation of caloric suitable range of concentration of methane for the implementation of perfect combustion in gas engines 3 and the gas turbine 4 is set in advance. For example, a suitable range is specifically plus or minus 2% from 35 %by volume. In order to supply gas with the concentration of methane in the pipe 50 for supplying the mixed gas, each of the control valves 28a, 28b, 28c and 28d supplies is Yes in the device 10 for regulating caloric gas is controlled in this way. Specifically, the feedback control is performed based on the signal to determine the concentration of methane from calorimeter 30 mounted on the pipe 50 for supplying the mixed gas.

For example, when the control valve 28a flow offer, and it is estimated that the methane concentration in the gas supplied from the pipe 11 to the low-calorie gas is within the above specified range, based on the signal from the calorimeter 30 (or calorimeter 29A on the pipeline 11), control valves 28b, 28c and 28d of consumption are closed, thereby providing the opportunity to supply gas only from the pipeline 11. When the concentration of methane exceeds the set range, the control valve 28d flow pipe 15 for air supply is opened to reduce the concentration of methane so that the deviation of the concentration could be zero, and continues the regulation of its open position in accordance with the signal from the calorimeter. On the contrary, when the methane concentration drops below a preset range, the control valve 28b flow pipe 12 for gas with intermediate calorie and/or control valve 28c flow pipe 13 for high-calorie gas, respectively, are opened to increase the methane concentration so that the concentration deviations could article shall be zero, and continues the regulation of their public provisions regulating valve 28c flow in accordance with the signal from the calorimeter 30. In this case, the open position of the control valve 28a flow pipe 11 for the low-calorie gas, if desired, can be adjusted.

As will be described later, the signal indicating the absence of gas flow, is issued by the device 16 for monitoring the balance amount of gas. Specifically, when the amount of gas supplied from the pipe 50 for supplying the mixed gas is less than the amount of gas required at sites E and T gas consumption, the device 16 for monitoring the balance of the amount of gas produces a signal indicating this. Accordingly, the device 10 for regulating caloric gas produces low-calorie gas for feeding in the absence of gas. More specifically, in accordance with the command from the device 32 to control the regulation of calorie control valve 28b flow pipe 12 for gas with intermediate calorie and/or control valve 28c flow pipe 13 for high calorific gas, and control valve 28d flow pipe 15 for supplying air to open, thereby generating the necessary amount of low-calorie gas. The concentration of methane in the produced thus by mixing nishka Orina gas and low gas supplied from pipe 11 to the low-calorie gas is set within a predetermined range by the above-described control.

Figure 5 shows a device 16 for monitoring the balance amount of gas. The device 16 for monitoring the balance of the amount of gas contains a reservoir 33 a small amount connected with a pipe 50 for supplying the mixed gas, the top cover 34, hermetically closing the opening at the upper end of the tank 33 and moving vertically along the inner side of the tank 33, the counterweight 35, mounted on the top cover 34, the sensor 36 provisions for determining the vertical position (height) of the upper cover 34 and the sensor 37 balance. The top cover 34 is moveable vertically in accordance with the balance between the force pushing down the top cover 34 with the counterweight 35 and the atmospheric pressure and the force pushing upward by the internal pressure in the tank 33. As defined here, a small tank 33 denotes, for example, the volume of gas that can be consumed by one gas turbine for a period of 10 to 15 minutes. If the gas contains methane concentration of 35 %by volume, and the gas turbine has a rated power of approximately 1600 kW, the amount is from about 300 to 500 cubic meters. As sensor 36 provisions mo is et to be used sensor photoelectric type or ultrasonic type.

Instead of the upper cover 34, hermetically closing the opening at the upper end of the tank 33 may be used in a flexible bag, such as a cylinder, which is connected to the pipe 50 for supplying the mixed gas, and a component that can be detected by the sensor 36 of the regulation, can be installed on the container.

In accordance with a device 16 for monitoring the balance amount of gas when the amount of gas equal to the amount of gas consumed at sites E and T for consumption, that is, these quantities are balanced properly, the internal pressure in the tank 33 (greater than atmospheric pressure) is constant. By adjusting the counterweight 35 vertical position (initial position) B of the top cover 34 is installed to maintain these quantities are properly balanced. The sensor 37 of the balance sheet contains initial position B, the valid range is from L to H, zone warnings from LL to L and H to HH and zone alarm from LLL to LL and HH to HHH, which will be described later. When the amount of gas exceeds the amount of consumed gas, the internal pressure in the tank 33 is increased, thereby causing the top cover 34 to move up. On the contrary, when the amount of gas becomes lower than the quantity of consumed gas, internally the pressure in the reservoir 33 is reduced, through this causing the top cover 34 to move down. Based on the initial position B are the lower the L value and the upper value H of the allowable range, the top cover 34. In the case where the change in supply and demand is in the range from L to H, the sensor 37 balance sheet does not give any command to action. Outside the valid range from L to H of the lower and upper zone warnings from LL to L and H to HH are installed as pre-determined ranges. When the upper cover 34 is located within the zones of warnings from LL to L or H to HH, the sensor 37 balance takes the team on a well-established part of the system 1, in order to force her to seek the cause of this imbalance between supply and demand. On the basis of zones warnings from LL to L and H to HH set the lower and upper zone alarm from LLL to LL from HH to HHH in the form of pre-established ranges. When the upper cover 34 is within the alarm area from LLL to LL or HH to HHH, the sensor 37 balance submits a command on the marked portion in the system 1, in order to rectify this imbalance between demand and supply. The command is processed and executed to address this imbalance.

As the imbalance is corrected, as described below. In the range from LLL to LL (i.e. in the absence of gas) gas turbine 4 is loaded less than or operation of gas is urbini 4 and/or working gas of the engine 3 is stopped. When the engine can not be less loaded in order to meet the demand for electricity and heat, the device 10 for regulating caloric gas increases the production of low-calorie gas. In the range from HH to HHH load of the gas turbine 4 is increased and/or another gas turbine 4 and/or gas engine 3, which is temporarily stopped, started again. A device 38 for release (figure 1), situated on the side downstream than the device 16 for monitoring the balance of the amount of gas is actuated to release excess gas. The device 38 for output can be set to any desired place of the pipes 11 and 50 for gas supply, while preferably from downstream device 16 for monitoring the balance amount of gas. The number of devices 38 for release is not intended to be limited. The device for release configured to release all possible low-calorie gases. Low-calorie gas is not intended to release it to the atmosphere for safety, but may be submitted to the places of consumption, for which you want a low-calorie gas for another purpose.

The device 38 for the release contains a flow meter 43 and valve 44 flow installed on the pipe 50 for supplying mixed the CSOs gas. The flow meter 43 is designed to measure the quantity of gas when determining the number of gas engines 3 or the gas turbine 4, which should actually work. The control valve 44 of consumption in the normal mode of operation is closed. And, as described above, when the amount of gas far exceeds the number of the desired gas regulating valve 44 opens consumption to eliminate the imbalance between supply and demand for gas so that the gas was released into the atmosphere or excess gas was supplied to other places of consumption. That is, the control valve 44 of consumption functions as a safety valve, and therefore, the device 38 for release may be referred to as a safety device.

Figure 6 shows a device 39 for monitoring the balance of the amount of gas that has a different design. The device 39 for monitoring the balance of the amount of gas contains a sealed tank 40 connected to the pipe 50 for supplying the mixed gas, the pressure sensor 41 for determining the internal pressure in the closed tank 40 and the sensor 42 balance. The internal pressure in the closed tank 40 provided that the supply and demand for gas should be properly balanced, installed in the sensor 42 balance sheet as a source pressure. In the same way as described above, it is permissible on Amazon, zone warnings and zone alarm installed in the sensor 42 balance on the basis of the specific pressure. The initial pressure is determined based on the operation of the device 6 for suction. Typical initial pressure of approximately 500 mm of water. Art. And in the same way as described above for zones warnings, the sensor 42 balance submits a command to the designated part of the system 1, in order to force her to seek the cause of the imbalance between demand and supply of gas. In zone alarm sensor 42 balance submits a command to the designated part of the system 1 to correct the imbalance. The command is executed eliminate the imbalance. The imbalance is eliminated in the same way as described above.

The system 1 includes a device 100 of the control system to control the operation of the entire system 1. In the system 1, the management components through devices 26 and 32 of the control signals supplied from the sensors 37 and 42 and meters, control system 1 through the device 100 of the control system are combined to perform efficient and safe operation. Hereinafter is described an example of the operation of the system 1.

When the system 1 is installed, for example, in coal mines, the condition develop low-calorie gas and change the actual quantity (including maximum and minimum) are usually determined in advance. On the basis of these results, EMERAUDE and installed gas engines and gas turbines, who can consume the maximum amount of gas. When the gas in a quantity smaller than the predicted minimum number of consumed gas engines. As shown in Fig.7, an example of operation of the system 1 is that the variable part V low-calorie gas from coal seams C or the like, which is different from the stably generated number S, is consumed by the gas turbine 4, and the gas (the gas is stably generated number S), the number of which is smaller than the predicted minimum number of consumed gas engines 3. When the low-calorie gas is used as fuel, gas engines typically operate in a bistable mode, since gas engines are less suited for this work, when the load is constantly changing. On the other hand, the gas turbine can operate with variable load, and therefore changing the amount of gas is more suitable for the gas turbine. 7 the abscissa axis represents time, such as day, week, and month, and the y-axis presents the number of generated low-calorie gas.

On Fig shows an example of a process of starting the system 1. In accordance with this process, firstly, many gas engines 3 runs one after the other. Secondly, when stable operation starts the I mode of operation of the gas engines 3, gas turbine 4 and the steam turbine 17. Since the gas engines 3 and the gas turbine 4 is performed so that their capacity for power generation and heat supply, i.e. the maximum amount of gas that should be consumed gas engines 3 and the gas turbines 4, exceeds the number of generated gas, as described above, some of the gas engines 3 are not working. On Fig on the x-axis presents the operation mode, and the y-axis presents the number of gas consumed in power generation and heat supply at site E and T. the x-axis corresponds to time, and the ordinate axis corresponds to the power system. On Fig each of the values from Ge1 to Ge4 indicates the amount of gas consumed by each gas engine 3, and each of the values Gt1 and Gt2 indicates the amount of gas consumed gas turbine 4. And each of the values from Qa to Qe denotes the amount of gas released in the atmosphere in each operation mode, and Tm denotes the minimum amount of gas required to maintain operation of one gas turbine 4.

Basically, the gas is always produced from coal seams C with a slight modification to the quantity of gas. The gas is absorbed by the device 6 for suction (figure 1), to the extent possible, for security purposes, production in the cavities M in the mine. Before starting work the s for energy and heat at sites E and T in the system 1, high-calorie gas and gas with intermediate calories, which are separated from the suction gas through the device 8 for separating gas, served in the appropriate places of consumption of U1 and U2 (Fig 1). On the other hand, since the low-calorie gas cannot be used in other equipment, except for system 1, low-calorie gas is usually produced out of the device 38 for release or similar, before you run gas engines 3 and the gas turbine 4. Based on the information from the flow meter 43, is installed on the device 38 for release or the like, the device 100 of the control system learns of the gas flow through the pipeline 11 to a low-calorie gas. In addition, the device 100, the control system determines the flow rate of the gas consumed one gas engine 3, the flow of gas consumed one gas turbine 4 and each of the gas engines 3 and the gas turbine 4.

In accordance with the command from the device 100 of the control system, gas engines run 3 in series (from (A) to (D) with Fig). Simultaneously, the control valve 44 of the flow device 38 to release gradually closes. In continuation of this work, the device 100 of the control system compares the information (the amount of gas released in the atmosphere) from the flow meter 43 device 38 to issue the ska with the amount of gas consumption of certain gas engine 3, and starts the next gas engine 3. When one of the four gas engines 3 installed as a spare engine, run three gas engine 3. Then the device 100, the control system compares the information from the flow meter 43 with a minimum amount of gas consumed one gas turbine 4 (Tm on Fig), and runs one of the gas turbine 4 ((E) on Fig). When it becomes necessary to release the gas from the device 38 for release based on information from the flow meter 43, while the gas turbine 4 continues to operate under a load of approximately 100% (full load), other gas turbine 4 is subsequently invoked ((F) on Fig)to consume excessive gas. Instead of running the following gas turbine 4, after the load on one of the gas turbine 4 is complete, as shown in Fig, many gas turbine 4 can be running at the same time and can work under intermediate load.

The above startup process, i.e. a process of successive run gas engines 3 and the gas turbine 4, of course, applies to the case where the number of generated gas increases, while working on the development of energy and heat supply at site E and T are partly made in the mode in which gas is produced Myung is more than usual.

The purpose of the system 1 is the effective gas flow collected from coal seams C or the like, and the demands for electricity and/or heat as much as possible, using samoobrazovaniya gas. Therefore, when produced enough gas to operate the system 1, all gas engines 3 and the gas turbine 4, except the spare gas engine 3. Even when the gas is fed in smaller quantities, and, therefore, are some of the gas engines 3 and some of the gas turbines 4, it is preferable that at least one gas turbine 4 continued to consume the changing of the gas. This only happens because the gas turbine 4 can easily and smoothly change its load, but the gas engines 3 can't do it. Also, even when sustainably produced a number of S according to Fig.7 is reduced, at least one gas turbine 4 of all the gas turbines and gas engines should continue.

When the quantity of generated gas is reduced in the continued operation of the whole system 1, the operation is as follows. Specifically, when the device 100 of the control system receives the signal (the signal LL), showing the range from the LL to L from the device 16 for monitoring the balance of the amount of gas is find the is technical staff through the use of the indicator device or devices for alerts (not shown). After receiving the signal (signal LLL), showing the range from LLL to LL, the device 100 the management system sends the command, at least one gas turbine 4 to reduce the load. In response to this command of the gas turbine 4 reduces the amount of consumed gas. If the device 16 for monitoring the balance of the amount of gas continues to signal LLL, the device 100 the management system sends the command to sequentially stop the gas turbines 4 or gas engines 3. Also in this case, in order to consume gas at varying flow rate, one gas turbine 4 continues to operate until, until you stop. Alternatively, as a rule, an emergency stop of power generation and heat supply at site E and T can be performed automatically or manually.

Meanwhile, the external information OD relating to the demand for energy, such as the demand for electricity or the demand for steam, can be saved in the device 100 of the control system. The device 100, the control system controls the start and stop of the gas engines 3 or the gas turbine 4 by comparing information OD with the actual number of produced energy and the number of actual steam. In an alternative example of the above process when assessing what amount of low-calorie what about the gas must be increased in accordance with the demand for electricity, the device 100 the management system sends the command to the device 10 for regulating caloric gas to increase production of low-calorie gas.

If energy demand is reduced and the steam demand does not change, while the number of generated gas is constant, the device 100 the management system sends the command to sequentially stop the gas engines 3 and to support the work of the gas turbine 4. In addition, the device 100 the management system sends the command to the control valve 44 of the flow device 38 for release, and on the basis of the signal from the device 16 for monitoring the balance of the amount of gas to get it to open, the open position of the regulating valve 44 of the flow rate is regulated, and thereby produces excess gas. On the contrary, only when the reduced demand for steam, and the demand for electricity is not changed, the load of the gas turbine 4 is reduced and the remaining gas engine 3 is started instead. When the demand for electricity and the demand for steam is reduced, the gas turbine 4 is running under a reduced load and gas engines 3 consistently stop.

On the other hand, when the amount of generated gas increases, while the working part of the gas engines 3 and gas what's turbines 4, the device 16 for monitoring the balance of the amount of gas supplies HH signal or a signal HHH and the number of gas engines 3 and the gas turbine 4, which should work increases with this control at system startup 1. Also, when the device 16 for monitoring the balance of the amount of gas beeps HH unexpectedly, while the whole system 1 works, it is detected by the operator via the indicator device or devices for alerts (not shown). Further, when the device 16 for monitoring signals HHH, the device 100 the management system sends the command to the control valve 44 of the flow device 38 for release for its opening. The device 100 of the control system regulates the open position of the regulating valve 44 of the flow rate on the basis of the signal from the device 16 for monitoring the balance amount of gas. Because the signal (such as signal LLL or signal HHH) from a device 16 for monitoring the balance of the amount of gas indicates a deviation from the original position B, the open position of the regulating valve 44 of the flow rate is regulated to eliminate such deviations.

In the above embodiment, changing the number V of the gas consumed by the gas turbines, which can safely and quickly to adjust the load, and gas engines 3, consuming a constant amount is in the gas, that is, a constant amount S is smaller than the minimum of V. This is because this method is very effective. However, the present invention is not limited to this, and with the gas turbine 4 can be treated as gas engines 3, for example, they can work in on-off mode depending on the conditions of a gas.

While coal mine gas derived from coal seams C, was described as a source gas in the above embodiment, the present invention is not limited AWG. For example, you may use the methane produced or extracted from the organic polluting sludge in the continuation of wastewater treatment. Can also be used gas biomass produced during the fermentation of biomass from agricultural waste, biomass, wood waste, waste from livestock and other natural waste. In addition, can be used methane (called gas from landfills), produced through the fermentation and decomposition of General waste, including waste in dumping sites.

The source materials for these gases are all waste, and therefore, the quantity of generated gases varies over time. In particular, the quantity of generated gases from landfills decreases with time due to the features and advantages of the kami of waste from landfill. For such sources of gas to use effectively, gas engines low power with gas turbines equipped on the conveyor and moved to the dumping sites, and are there for short-term use at a time when the gas is sufficiently available.

Industrial application

In accordance with the present invention, samoobrazovaniya gas released in the atmosphere, which is not actually used, but it causes air pollution, can be used as a pure fuel and turn into this energy as electricity, steam, etc. in Addition, the changing part of the generated gas can be consumed fully effective without losses.

1. Power supply system containing a gas engine, gas turbine, a device for gas gathering, collecting the generated gas, a device for the separation of gas, continuously separating the gas from the device for collecting gas and the content of the combustible component which varies in time in accordance with the content of a combustible gas component, a device for controlling calories for selective mixing of gases having different contents of the combustible component, which are separated by a device for separation of gases to regulate the content of combustible components the NTA gas, which should be supplied to the gas engine and gas turbine, and a device control system to control the operation of the gas engine, gas turbine and a device for regulating caloric content.

2. The system according to claim 1, additionally containing a device for monitoring the balance of the amount of gas for monitoring balance of supply and requirements between the quantity of gas consumed by the gas engine and gas turbine operating conditions, and the amount of gas supplied from the device to control the calorie content in the gas turbine and gas engine, the device management system is designed to control the operation of at least one of the gas engine, gas turbine and device for regulating caloric content based on the signal from the device for monitoring the balance amount of gas.

3. The system according to claim 2, additionally containing a device for release, made on the channel for supplying gas through which the gas is fed into the gas turbine and gas engine to produce a gas channel for supplying gas to the outside, the device management system is designed to control the operation of the device for release on the basis of the signal from the device for monitoring the balance amount of gas.

4. The system according to claim 1, additionally containing to the ate, heat, coupled with a gas turbine.

5. The system according to claim 4, further containing a steam turbine coupled to a heat recovery boiler.

6. The system according to claim 1, in which the device for separation of gases includes meter fuel component, continuously measuring the content of a combustible gas component collected by the device for gas gathering, multiple channels for gas supply through which served gases in accordance with the ranges of the content of the combustible component, and means for changing channels, selecting one of the multiple channels for gas supply on the basis of measurement results by measuring the combustible component and switch to the selected channel for gas flow.

7. The system according to claim 1, in which the device for regulating caloric includes multiple channels for gas supply, which serves gases separated in accordance with the content of the combustible component through a device for separating gas channel for supplying mixed gas to which are connected multiple channels for gas flow, and a channel for supplying the mixed gas passes into the gas engine and gas turbine, and means for opening and closing to regulate open multiple channels for gas flow.

8. The system according to claim 7, in which a device for controlling kalor is inasti additionally includes a channel for air supply, connected to the channel for supplying the mixed gas, and means for opening and closing to regulate open channel for air supply and multiple channels for gas flow.

9. The system according to claim 7 or 8, in which the device for regulating caloric includes meter fuel component with feedback performed on the channel for supplying the mixed gas, and a device to control the regulation of calorie management tool for opening and closing to ensure the installation of the content of the combustible component in the prescribed range based on the measurement results by measuring the combustible component with feedback.

10. The system according to claim 2 or 3, in which the device for monitoring the balance amount of gas is performed on the channel for supplying the mixed gas passing out of the device for controlling the calories in the gas engine and the gas turbine, the device for monitoring the balance of the amount of gas includes a closed container connected to the channel for supplying the mixed gas, a pressure sensor for determining the internal pressure in the closed container and the first balance sensor for determining the degree of balance of supply and requirements through a comparison between the results of the pressure sensor and installed the original pressure.

11. System on p. or 3, in which the device for monitoring the balance amount of gas is performed on the channel for supplying the mixed gas passing out of the device for controlling the calories in the gas engine and gas turbine, and a device for monitoring the balance of the amount of gas includes a container having an aperture at the upper end and designed to connect with a channel for supplying the mixed gas, the top cover is configured to move vertically along the inner side of the container and sealed closing openings at the upper end of the container, the position sensor to determine the position of the top cover moves vertically in accordance with the change in the internal pressure in the container, and the second balance sensor for determining the degree of balance of supply and requirements-based definition signal from the position sensor.

12. The system according to claim 1, in which the device management system configured to control, to regulate, at least one gas turbine in operational mode in accordance with the change in the number of gas supply in the continuation of the work as a gas engine or gas turbine.

13. System according to clause 12, in which the device management system configured to perform control to change the load, the gas is howling turbine in accordance with the signal, showing the change in the number of gas feed device for monitoring the balance amount of gas.



 

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7 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: gas turbine plant for conversion of associated petroleum gas into power comprises an air compressor, a turbine, a combustion chamber, a power generator and a device o air heating downstream the compressor, comprising a heat exchange regenerator device arranged in an exhaust pipe. The combustion chamber with the exhaust pipe are arranged in the form of a surface flare for burning of associated petroleum gas. The compressor is equipped with an electric drive. The turbine at the outlet side is communicated with environment with the help of an autonomous pipe. The surface flare at the side of associated petroleum gas supply is made with a device of atmospheric air intake.

EFFECT: expanded area of gas turbine plant application, increased efficiency of carbon fuel usage and improved environmental capability of environment.

2 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises compressor, catalytic combustion chamber, turbine, regenerative heat exchanger, burner and valve. Compressor serves to compress working gas, said gas being of combustible component concentration smaller than that of its inflammability. Catalytic combustion chamber is designed to combust compressed air by catalytic reaction with the help of catalyst arranged therein to produce gaseous combustion products. Said products fed from catalytic combustion chamber drive the turbine. Regenerative heat exchanger serves to heat compressed air fed from compressor into said combustion chamber via used gas fed into turbine via used gas channel into regenerative heat exchanger. Burned serves to combust the gas forced from compressor along with fuel for forming the heating gas and feeding heating gas into used gas channel. Valve is designed to control the amount of gas to be fed to the burner.

EFFECT: ruled out loss of power output or discharge system pressure loss, compact design.

5 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: power system comprises an oil boiler with a pipeline for removal of spent gases with a control valve, a circuit with intermediate coolant, which connects the oil boiler and the plant on the basis of organic Rankine cycle, which is a closed circuit with an organic fluid, comprising a turbine on a shaft with a power generator and a cooling system with a heat exchanger and a circulation pump. It is equipped with a burner device installed in the oil boiler for complete combustion of associated petroleum gas with a connected line of air supply, passing via the heat exchanger of the cooling system on the plant based on the organic Rankine cycle, and a bypass line with a control valve, which connects the pipeline for removal of spent gases with a control valve and the combustion space of the oil boiler.

EFFECT: invention makes it possible to increase efficiency of combustion of associated petroleum gas due to use of organic Rankine cycle, reliability of operation of a power system and the possibility to convert heat of combustion of associated petroleum gas into power in place of oil production.

1 dwg

Power plant // 2597715

FIELD: energy.

SUBSTANCE: invention relates to power engineering. Power plant comprises combustion chamber, inside which there is a burner, which is a blind branch pipe with attached thereto pylons, uniformly arranged in a circle and having in cross section a V-shape, in which there are channels for fuel outlet, ignition device arranged on side surface of combustion chamber, turbocompressor consisting of interconnected turbine and compressor connected with electric generator, wherein turbocompressor turbine is located in inlet part of combustion chamber, and output of compressor is connected by pipelines with a heat exchanger located in outlet part of combustion chamber, wherein at output of heat exchanger there is a flue pipe.

EFFECT: invention provides high efficiency and compactness by increasing thermal efficiency.

1 cl, 3 dwg

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