Boiler installation, straight-through steam boiler and boiler installation active section heat exchanger

FIELD: boiler installation technology.

SUBSTANCE: boiler installation has boiler provided with burners, hot-water heater, heat exchangers passing through boiler and hot water heater, economizer and heat exchanger with heat exchanger passing it through. All the units of boiler installation are fixed at the same platform. Case of hot-water heater has several shells; cavities among shells are intended for filling with air and feed water. Cavity intended for filling with feed water is included into feed water circuit between feed water pump and economizer. Cavity intended for filling with air is connected with burners and blower. Heat exchanger disposed inside boiler is made in form of spiral envelopes disposed coaxially. Each envelope is formed by heat-exchange tubes connected with feeding and receiving boards. Envelopes having smaller diameters are shifted to combustion chamber made in form of two sequentially disposed cavities. Heat-exchange tubes of heat exchanger are made to have two sections. Tubes of the first section are made to touch tubes from the second section. Tubes of the second section are put in spiral envelopes to form gaps between surfaces of envelopes.

EFFECT: reduced size and weight of boiler installation, steam boiler and heat exchanger.

18 cl, 13 dwg

 

Group of inventions relates to boiler installations, once-through water-tube steam boilers and heat exchangers of the active zone of the boiler.

The prior art known technical solution according to the patent RU 2090805, F 24 D 17/00, 20.09.1997, [1], containing at least one boiler, equipped with automated burners, boiler, heat exchangers, passing through the boiler and the boiler, the air supply system and gas, the contours of the feedwater and network pair, the control unit, the gas supply system containing the pipelines bringing gas to the burners, and the contour of the feed water is connected to the recharge capacity and equipped with a pump discharge feed water.

The disadvantage of the boiler unit [1] is its bulkiness. Boiler installation [1] is adopted for the closest analogue of the invention “Boiler house”.

From the author's certificate of the USSR No. 1793144, IPC F 22 B 1/18, 27/16, publication date 07.02.93, for the invention of “Heat LOMANOV”, [2], a well-known boiler, comprising a housing placed in the end of the burner, combustion chamber, a system for supplying fuel and air to the burner, the boiler body is made of a multilayer, by placing between layers forming the power body construction, cooler, which used feed water.

The disadvantage of the boiler according to the invention [2] is the lack of economizer heat exchangers in the active zone, that reduces the performance of the boiler and the power output of steam per unit volume of the boiler.

Proposal from the UK No. 2151344, IPC F 22 B 1/00, F 23 M 5/08, publication date 17.07.1985,, [3], known flow of water tube steam boiler, comprising a housing placed in the end of the burner, combustion chamber, heat exchangers in the reactor, connected to the economizer, the supply of fuel and air to the burner. The disadvantage of the boiler according to the invention [3] is a supply of feed water in a horizontal boiler top and the exhaust steam from below, which leads to the need to strengthen the hull in places inlet and outlet pipelines with feed water. This increases the size and weight of the casing of the boiler, reducing the power output of steam per unit volume of the boiler. This invention is taken as the closest prior art “once-through water-tube steam boiler”.

From U.S. patent 4550687, IPC F 22 B 33/00, CPP 122/1C, published 05.11.1985,, [4], a known heat exchanger of the active zone containing at least one tube connected to adjacent giving and receiving pipe boards and made with spiral and straightened sections. A disadvantage of the known heat exchanger is the fulfillment of the straightened section of the tube passing along the center of the spiral section, which reduces the rigidity of the heat exchanger tube and not allow it to stack trubku spiral shell, limiting the intensity of heat removal. This invention [4] is taken as the closest analogue to the invention, the heat Exchanger of the active zone of the boiler”.

The team solved invention technical problem is to increase the power output per unit volume of the boiler. The technical result consists in reducing the size and weight of the boiler installation, once-through water-tube steam boiler and heat exchanger his active zone as a whole, which allows us to give the boiler and boiler plant compactness compared with boilers and steam generators similar performance.

The essence of invention is as follows.

Boiler system includes at least one boiler, equipped with automated burners, boiler, heat exchangers, passing through the boiler and the boiler, the air supply system and gas, the contours of the feedwater and network pair, the control unit, the gas supply system containing the pipelines bringing gas to the burners, and the contour of the feed water is connected to the recharge capacity and equipped with a pump discharge feed water. In addition, the boiler system includes an economizer passes through the heat exchanger, said air supply system includes a blower connected with the burners, all the units of the boiler unit fixed on a single square is thorme, the boiler contains a few shell cavity between which are designed to fill the cooler, which is used as feed water and the air, and the cavity is designed to fill the feed water, is included in the path of feed water between the feedwater pump and economizer, the cavity is designed to fill the air, is connected with the blower and burners of the combustion chamber of the boiler is placed in the boiler heat exchanger in the form of coaxially spaced spiral shells, each of which is formed of heat-exchange tubes connected with giving and receiving pipe boards, located at the end of the boiler, while the shell with a smaller diameter offset in side of the combustion chamber, designed as two consecutive cavities defined in the butt burners.

The boiler includes a housing placed in the end of the burner, combustion chamber and heat exchanger in the reactor, the supply of fuel and air to the burner. The combustion chamber is designed as two consecutive cavities installed in its end of the burner tube of the above-mentioned heat exchanger is connected with the giving and the receiving pipe boards installed in the casing, the opposite end of the burner, the boiler body is made of several obec the EC to form between them a cavity, designed to fill the cooler, which is, at least, feed water and the air, and the cavity is designed to fill the feed water, is connected with the feed pipe of the Board of the above-mentioned heat exchanger, and the cavity is designed to fill the air, is connected with the blower and burner nozzles.

The boiler can be connected to the economizer, heat exchanger, which is connected with the cavity of the casing of the boiler, intended to fill the feed water, and then feed pipe Board.

The external cavity may be filled with heat-insulating material.

The burner may include spark-plug and pilot nozzle, the inner and outer annular gas manifolds, equipped with nozzles and connected to the fuel source via a controllable valve, and nozzle outer annular collector is installed at the end of the boiler with a shift towards the active zone.

Pilot nozzle can be equipped with auxiliary fuel source is placed inside the casing of the boiler, and the nozzle inner and outer annular collector can be performed with the air swirler.

The heat exchanger of the active zone contains a heat exchanger tube that is connected with the giving and the receiving pipe boards and made the two sites, the first and second, while the second section is a spiral. In addition, the heat exchanger contains several those pipes that are on the first segment is made on the tube on the second site, in addition, the tube at the second site is laid in a spiral shell, while between the surfaces of the membranes formed by the gaps.

Inside the main shell can be installed with clearance to the surface of the displacer, the cavity of which is connected with a source of feed water, the displacer may be made cylindrical.

The first part of the heat exchange tube may be made in the form of a spiral, the step which turns more step of turns of the second segment of the heat exchange tubes.

The pitch of the helix on the first segment of the heat exchange tube can be performed both constant and variable, increasing as the distance from the tube plate.

At least one heat exchange tube of the heat exchanger on the first segment may be made straight, directed along the generatrix of the shell of the second leg and in contact with the pipe laid in a spiral shell. Heat exchanger tube in the first stage can be made in the form of a cylindrical shell.

Between the surfaces of the displacer and the Central shell can be located first sections of Teploobmennik the tubes.

Execution of the boiler unit containing at least one boiler, each of which is equipped with burners and economizer, boiler, air supply system and gas, the contours of the feedwater and network pair, the control unit, thus the performance of the system for supplying air containing a blower connected with a burner, a gas supply system, the pipelines bringing gas to the burners, the execution path of the feed water is connected to the recharge capacity and equipped with a pump discharge feed water, including heat exchangers, passing through the boiler, economizer, boiler provides heat transfer in between boiler feed water and mains water turning it into steam used for heating, generating steam, etc.

The execution of the body of each boiler boiler containing a few shells with filling the cavity between them cooler, which is used as feed water and the air, the connection cavity filled with feed water from the economizer and then to the supply pipe Board heat exchanger of the active zone, and the cavity filled with air, blower and burner nozzles provides cooling of the casing of the boiler, which reduces its weight while maintaining strength.

Accommodation in the boiler heat exchanger in the form of coaxial races is than necessary, spiral shells, each of which is formed of heat-exchange tubes connected with giving and receiving pipe boards located near the end of the boiler, the opposite end of the burner, as well as the displacement of the membrane with a smaller diameter in the direction of the combustion chamber and the execution of the combustion chamber in the form of two consecutive cavities defined in the butt burners provides the increase of heat removal per unit volume of the boiler, which reduces the size of the boiler and boiler installation in General compared to steam generating units of similar capacity. This allows you to set all the units boiler installation on a single platform, providing compactness and ease of installation of the boiler installation.

The execution of a steam boiler comprising a housing placed in the end of the burner, combustion chamber, heat exchanger in the reactor, connected to the economizer, the supply of fuel and air to the burner enables the operation of the boiler as a straight tube. The design of the combustion chamber in the form of two consecutive cavities defined in the side of the burners, an active zone comprising a heat exchanger connected with giving and receiving pipe boards, located at the end of the body opposite to the end with a burner, provides intensive exchanger is between Yong torch burner, consisting of two zones: the inner formed by the inner contour of the nozzle, and the outer, formed by the outer contour of the nozzle, as well as the compactness of the boiler due to the location of the supply and receiving tube sheets from the end opposite to the end face of the nozzle when placing the heat exchangers on the border of the flame in the combustion chamber, with the combination of the active zone of the combustion chamber and the flue gas stream with the washed tubes of the heat exchanger.

The embodiment of the casing of the boiler containing a few shells, to form between them a cavity intended to fill the cooler, which are used as, at least, feed water and the air, the connection cavity for feedwater circuit feed water provides a smooth temperature change in case design and on the walls of the boiler and gradual heating of the feed water. This reduces thermal stresses in the boiler body. The connection cavity filled with air, blower and burner nozzles provides preheating of the air supplied to the nozzles, and at the same time reduces the temperature difference on the shells and the body of the boiler, thereby reducing thermal stresses in the body of the boiler and reduces the volume and weight of the boiler as a whole.

Filling externally the cavity of the heat-insulating material helps to reduce heat loss of the boiler body and therefore, to improve heat transfer to the feed water, as well as raising the level of comfort in the room where the boiler is installed.

Execution burner containing spark-plug, the inner and outer annular gas manifolds, equipped with nozzles and connected to the fuel source via a controllable valve, offset nozzle outer annular collector side of the active zone provides for the formation of the torch, consisting of internal and external combustion zone, thereby increasing the intensity of heat exchange with feed water in the heat exchanger in the active zone. The presence of a controlled valves provides the ability to change settings and configurations torch that allows you to adjust the performance of the boiler.

Equipment pilot nozzle Autonomous source of fuel and its placement inside end of the cylindrical body of the boiler helps to simplify debugging and check the efficiency of the boiler after installation, repair or stop it. Execution injectors videoposobiyami air contributes to better fuel combustion.

Performing a heat exchanger of the active zone containing at least one tube connected to adjacent giving and receiving pipe boards and made with spiral and straightened sections, obespechivayushchei heat exchanger. Performing at least one tube is straightened on the site regarding tube spiral section and laying the spiral sections of tubing in a spiral shell provides rigidity and compactness of the heat exchanger. The location of the shells with gaps between them for the passage of flue gases formed between the surfaces of membranes and straightened sections of the tubes to increase heat transfer rate by increasing the area of the membrane and increasing the flow of feed water through run-spiral spiral plot of multiple shells and thereby increasing the total flow area of all the heat exchange tubes while reducing pressure losses in the resistance by reducing the length of each tube.

Installation inside the shell with a gap to the surface of the displacer, the cavity of which is connected with a source of feed water, reduces the area of the orifice for flue gases, allows you to generate speed and temperature of the flue gas stream required for effective heat exchange with the refrigerant in the shell of the heat exchanger.

Performing heat-exchange tubes in the form of two spirals with different step turns when the pitch of the helix with a big step both constant and variable, increasing as the distance from the tube plate, increases the speed Pro is of an unforgettable flue gas channel, formed adjacent shells and turns of the spiral with a large pitch of adjacent tubes of the heat exchanger, and an uneven step ensures that the change in cross-section and, therefore, variable flow rate in the duct of flue gases and the heat transfer to the coolant in the heat exchanger.

Performing at least one tube of the heat exchanger on the first segment straight line directed along the generatrix of the shell of the second leg and in contact with the tubes, arranged in a spiral shell, improves the manufacturability of the Assembly of tubes in the shell.

The execution of the tube in the spiral section in the form of a cylindrical shell technology simplifies the manufacture and Assembly of the heat exchanger.

The execution of the cylindrical displacer with the location between the displacer and the shell straight portions of the heat exchange tubes ensures manufacturability and compactness of the heat exchanger.

The group of inventions is illustrated by the following drawings.

Figure 1 shows the functional diagram of the boiler unit when using the 1st of the boiler.

Figure 2 shows the boiler plant when viewed from above.

Figure 3 shows the boiler plant when viewed from the side.

Figure 4 shows a longitudinal section of straight tube steam boiler.

Figure 5 given node a in figure 4.

Figure 6 is given with the value of b-B in figure 4.

Figure 7 shows the cross section b-b In figure 4.

On Fig given type G figure 4.

Figure 9 shows the cross section d-D figure 4.

Figure 10 shows the heat exchanger without displacer Assembly in isometric.

Figure 11 shows a heat exchanger with a conical displacer Assembly in isometric.

On Fig shows a heat exchanger with a cylindrical displacer Assembly in isometric.

On Fig shows the tube of the heat exchanger in the ISO.

Boiler installation, once-through water-tube steam boiler and the heat exchanger is arranged as follows.

Boiler installation (figure 1) contains at least one boiler 1, the economizer 2, boiler 3, the air supply system and gas circuits 4 and 5 respectively of the feed water and the network of steam (water), the control unit 6.

The air supply system includes a blower 8, connected with a burner 7 of the boiler 1. Circuit 4, the feed water is connected to the recharge capacity 9 and air pump 10 discharge feed water, includes heat exchangers, passing through the boiler 1, the economizer 2, boiler 3, providing heat exchange in the boiler 1 and the economizer 2 between the flue gases and the feed water in the boiler 3 between the feed water and mains water, turning it into steam used for heating, generating steam, etc. Blower 8 and the pump 10 can operate with a total power plant, for example electrodes the Telem 11 (1), own power plants or from the shaft of the turbine, installed in the boiler (not shown).

Boiler 1 (figure 4) includes a housing 12, a burner 7, the combustion chamber 13, the active area 14 with the heat exchanger 15, the feed 16 and the receiving tube plate 17. The housing 12 can connect to the economizer 2, which can be equipped with a muffler 18 and pipe 19 to the flue gas.

The design of the housing 12 is made with the walls 20, 21 internal, medium 22 and 23 external shell to form between them cavities 24, 25 and 26. The cavity 24 is designed to fill the feed water and is formed, for example, the wall 20 of the housing 12 and the inner shell 21 in the compartment 27 of the housing 12 corresponding to the position of the combustion chamber 13, and the compartment 28, partially or fully corresponding to the active area 14 of the boiler 1. The cavity 25 is designed to fill the air and formed, for example, between the inner 21 and secondary 22 shell compartments 27, 28 of the housing 12 corresponding to the combustion chamber 13 and the core 14 and the wall 20 of the housing 12 and secondary sides 22 of the end cover 29, which are tube sheets 17, 18. The cavity 26 is filled with heat-insulating material, such as basalt wool, and is formed between the outer 26 and an average of 25 shells. Compartments 27, 28 and 29 of the housing 12 are connected by flanges 30 and 31. The compartment 29 is connected with Economics the rum 2 flange 32.

Perhaps another embodiment of the casing 12 of the boiler, however, the above design is preferred.

The cavity 24 is included in the circuit 4 feed water between the feed water pump 10 and the economizer 2 and provides cooling of the wall 20 of the housing 12 of the boiler 1. The connection cavity 26 with the duct, inlet air from the blower 8 to the burner 7 of the combustion chamber 13 of the boiler 1, also contributes to the cooling of the housing 12 and to reduce thermal stresses and deformations due to ensure a smooth temperature difference in the design of housing 12 containing wall 20 and shells 21, 22 and 23.

In a preferred embodiment, the boiler system includes a boiler 1, boiler 3, the gas supply system and air, the control unit 6, the contours of the feed water 4 and the network of steam (water) 5. The body 12 of the boiler 1 is connected to the flange 32 with the economizer 2. At one end of the body 12 of the boiler 1 set the burner 7 and at the opposite end of the feed 16 and the reception tube plate 17 connected to the heat exchanger 15 formed coaxially mounted spiral shells 33, collected from tubes 34 (figure 10). Circuit 4, the feed water contains capacity 9 feed pump 10 that supplies feed water to the cavity 24 between the wall 20 and the inner shell 21 of the housing 12 of the boiler 1, next to the economizer heat exchangers 2, then the heat exchanger 15 of the act the main area 14 of the boiler 1 and the heat exchanger of the boiler 3, and, finally, is connected by piping with the pump 10. The gas supply system and air includes a blower 8, forcing air into the cavity 26 of the housing 12 of the boiler 1 is connected to the burner 7.

Boiler 1 includes a burner 7, equipped with ignition spark plug 35 (6) and nozzle 36, 37 internal and external 38 ring gas manifolds, equipped with nozzles 39 and 40 (Fig) and the valves 41 and 42. Nozzles 36, 39 and 40 are made with videoposobiyami (figure 5), for example, sacienaasim, for better combustion of fuel.

Igniting the spark 35 and nozzle 36 is located in the deeper end of the body 12 of the boiler 1, the nozzles 39 of the inner annular gas manifold 37 is located in the edge 12 of the boiler 1 and the nozzle 40 of the outer annular gas manifold 38 are located at the end of the body 12 with a shift towards the active zone 14 of the boiler 1. The valves 41 and 42 may be performed as managed and unmanaged configured to pressure.

This embodiment of the burner 7 provides for the formation in the combustion chamber 13 of the torch, consisting of inner and outer zones, thereby increasing the intensity of heat transfer in the active zone 14 with the heat exchanger 15 and the cavities 24 and 25 through the wall 20 and the ring 21. The presence of a controlled valves 41 and 42 provides the ability to change settings and configurations torch that allows you to adjust roizvoditelnost boiler 1.

Pilot injector 35 is equipped with an Autonomous source of fuel (not labeled) and placed inside the casing 12 of the boiler 1, simplifying debugging and check the efficiency of the boiler 1 after installation, repair or stop it.

In a preferred embodiment of boiler 1 (figure 4), the housing 12 is made up of compartments 27, 28, 29, interconnected by flanges 30, 31. Sections 27 and 28 of the housing 12 are functionally equivalent to the burner 7, the combustion chamber 13 and the core 14, section 29 corresponds to the end of the body 12 with the tube boards 16 and 17. Sections 27, 28 and 29 of the housing 12 is equipped with a cooling jacket formed by the cavities 24 and 25 are filled respectively with feed water and air and is included in the circuit 4 of the feed water and air supply from the blower 7 to the nozzles 36, 39 and 40 of the burner 7 and the cavity 26 is filled teplozvukoizolirujushchej material (not labeled).

Section of the casing 29 in place of the heat exchanger 15 is connected to the housing of the economizer 2 via the flange 32. The economizer 2 is equipped with a muffler 18 and pipe 19 to the flue gases. Section 29 of the housing 12 at the end connected to the supply 16 and a suction pipe 17 boards.

Burner 7 has an internal, 37 and 38 external annular headers with nozzles 39 and 40 arranged offset in the direction of the active areas 14 and forming in the combustion chamber 13 internal and external is Yuyu combustion zone.

The heat exchanger 15 is located in the active area 14 of the boiler 1 and consists of coaxially spaced spiral shells 33 with a gap for the passage of flue gases and offset shells 33 of smaller diameter in the direction of the combustion chamber 13. Each shell 33 is formed by one or more heat exchange tubes 34, the ends of which are connected to the supply 16 and a suction pipe 17 boards. Each tube 34 can be divided into straightened 43 and the spiral 44 (Fig) areas. Tube sheets 16 and 17 are located near and connected with the butt-end of the housing 12, the opposite end of the burner 7. The tube 34 at site 43 is located along the tangent to the tubes 34, forming the shell 33. With the high performance of heat exchanger 15 creates a gap between the shells 33 for the passage of flue gases.

The heat exchanger 15 of the active zone 14 can be equipped with a displacer 45 (11, 12). Displacer 45 is made with a cavity connected to a source of feed water, for example, with the tube boards 16 and 17 or cavity 24 of the housing 12 of the boiler 1.

The execution of the tube 34 on the first section 43 of the heat exchanger 15 in the form of a spiral, in contact with the tube 34 in a helical section 44, step turns, a big step of turns of the spiral section 44 of each tube 34 of the heat exchanger 15, provides the twisting of the flow of flue gases, which increases the heat transfer to the feed water in trubbach. Step spiral on section 43 of the tube 34 constant simplifies the manufacturing technology of the heat exchanger 15, while the alternating step of changing the intensity of heat due to changes in the velocity of the flue gases through the heat exchanger 15, which allows to optimize the heat transfer and, consequently, to increase the efficiency of the boiler 1. When increasing the step section 43 of the tube 34 as one moves away from the feed tube plate 16 is more gradual heating of the feed water in the heat exchanger 15.

Performing a heat exchanger 15 with one straight tube 34 on the first segment 43 directed along the generatrix of the 2nd section 44 of the shell 33 (Fig) and in contact with the tubes 34, arranged in a spiral shell, provides manufacturability and Assembly of the heat exchanger 15, since the straight sections 43 are the supports for the tubes 34 of the helical section 44 of the heat exchanger 15.

Performing a heat exchanger 15 with tubes 34 on the section 44 is bent in the form of a cylindrical shell 33 simplifies tooling for laying pipes 34 of the heat exchanger 15 and the manufacturability of the Assembly of the shell 33 of the heat exchanger 15.

Performing a heat exchanger 15 which is located within the Central shell 33 displacer 45, cooled feed water, provides an increase in the Central square is blocki 33 and increases the rigidity of the heat exchanger 15 as a whole, that simplifies the installation of the heat exchanger 15 in the boiler 1. Displacer 45 may be tapered (11) or a cylindrical surface.

A Central shell 33 and the displacer 45 with a cylindrical surface (Fig) with the location between the displacer 45 and the Central shell 33 straight tubes 34 on the first segment 43 is substantially simplifies the manufacturing technology of the heat exchanger 15 as a whole and its installation in the active area 14 of the boiler 1.

Performing a heat exchanger 15 offset in the direction of the tube plate 16 and 17 of the beginning of the spiral section 44 of each of the casings 33 increasing their diameter allows to optimize the heat transfer to the heat exchanger 15 in the interaction with the combustion gases by selecting the surface area of each of the casings 33.

In a preferred embodiment of the heat exchanger 15 includes a shell 33 with a tapered form, composed of a number of tubes 34, each of which is on the section 43 is connected with the feed pipe Board 16 and is made in the form of a spiral with increasing step as the distance from the end of the tube boards 16, 17 and in contact with the tubes 34 on the inner surface of the shell 33 of the spiral section 44, which is connected with the receiving tube Board 17.

Boiler installation, boiler and heat exchanger are as follows.

Before starting the boiler for the circuit within each group 4 required quantity of nutritious water from the tank 9 feed pump 10 nutrient water is pumped into the cavity 24 of the cooling jacket of the housing 12 of the boiler 1, then in the economizer heat exchanger 2, then into the heat exchanger 15 of the active zone 14 and the heat exchanger of the boiler 3. Also filled contour 5 network steam (water).

Start the boiler 1 is carried out by feeding fuel to the pilot nozzle 36, the electric current at the spark-plug 35, which ignites the fuel. At the same time the gas is supplied and the air blower 8 to the nozzles 39 and 40 of the inner 37 and the outer ring 38 of the collectors of the burner 7. After exceeding the pressure trigger controlled valves 41 and 42, the feed gas to the nozzles 39 and 40, and into the combustion chamber 13 a mixture of gas and air is ignited from the flame of the pilot burner nozzle 36, forming a flame. Flue gases are washed by the wall 20 of the housing 12 of the boiler 1, the heat exchanger 15 of the active zone 14 of the boiler 1 and the economizer heat exchanger 2, the heated feed water, turning it into vapor that enters the heat exchanger of the boiler 3. In the boiler 3 is produced network steam supplied to the consumer. Feed water and the air in the cavities 24 and 25 of the housing 12 of the boiler 1 is cooled wall 20, thus reducing thermal stresses in the housing 12.

After the start of operation of the burner 7 of the firing nozzle 36 is turned off and the burner 7 is running in automatic mode. In case of lack of feed water in the circuit 4 from the tank 9 recharge through a controlled valve (not shown) of the pump 10 is nedostayuschie feed water.

When the boiler 1, the flue gases pass into the channels formed by section 43 of the tubing 34 and casing 33 of the active zone 14, washing the heat exchanger 15. When executing section 43 of the tubes 34 in the form of a spiral with a pitch greater than the pitch of the helix of the helical section 44 of tube 34, the path traversed flue gases increases. This increases the heat output of the heat exchanger 15 in the active zone 14, which increases the efficiency of the boiler 1 and boiler installation.

When executing shell 33 of the heat exchanger 15 with a tapered generatrix (11) and an offset shell 33 of larger diameter in the direction of tube plates 16, 17 also increases traversed the path and surrounding area of the shell 33 of the heat exchanger 15. The presence of the displacer 45 with a conical surface increases the area of the shell 33 of the heat exchanger 15.

Performing a heat exchanger 15 with displacer 45, shells 33 is cylindrical, and section 43 of the tubes 34 straight line directed along the cylindrical generatrix, simplifies the manufacturing technology of the heat exchanger 15 and the Assembly technology of the boiler 1 with some decrease in efficiency of the boiler unit.

Then, the flue gases enter the economizer 2 is connected with the compartment 29 of the housing 12 of the boiler 1 through a flange 32, and is washed by the economizer heat exchangers 2 and then through the muffler 18 and the pipe 19 is output from the boiler 1.

The existing level of technology, pozvolyayushchii boiler installation, boilers and heat exchangers of the active zone at an appropriate facility. You can use each invention individually, but their combined use allows to ensure the manufacturability of the heat exchanger and boiler, as well as compactness and high power output of the boiler and boiler plant as a whole.

1. Boiler system includes at least one boiler, equipped with automated burners, boiler, heat exchangers, passing through the boiler and the boiler, the air supply system and gas, the contours of the feedwater and network pair, the control unit, the gas supply system containing the pipelines bringing gas to the burners, and the contour of the feed water is connected to the recharge capacity and equipped with a pump discharge feed water, characterized in that it contains the economizer passes through the heat exchanger, said air supply system includes a blower connected with the burners, all the units of the boiler unit fixed on a single platform, the boiler contains a few shell cavity between which are designed to fill the cooler, which are used as feed water and the air, and the cavity is designed to fill the feed water, is included in the path of feed water between the pump nutrients in the water and economizer, the cavity is designed to fill the air, is connected with the blower and burners of the combustion chamber of the boiler is placed in the boiler heat exchanger in the form of coaxially spaced spiral shells, each of which is formed of heat-exchange tubes connected with giving and receiving pipe boards, located at the end of the boiler, while the shell with a smaller diameter is shifted in the direction of the combustion chamber, designed as two consecutive cavities defined in the butt burners.

2. Boiler, comprising a housing placed in the end of the burner, combustion chamber and heat exchanger in the reactor, the supply of fuel and air to the burner, wherein the combustion chamber is designed as two consecutive cavities installed in its end of the burner tube of the above-mentioned heat exchanger is connected with the giving and the receiving pipe boards installed in the casing, the opposite end of the burner, the boiler body is made of several shells to form between them a cavity intended to fill the cooler, which are used as, at least, feed water and the air, and the cavity designed to fill the feed water, is connected with the feed pipe Board mentioned heat exchanger and the cavity, designed for filling air, is connected with the blower and burner nozzles.

3. The boiler according to claim 2, characterized in that the boiler is connected to the economizer, heat exchanger, which is connected with the cavity of the casing of the boiler, intended to fill the feed water, and then feed pipe Board.

4. The boiler according to claim 2 or 3, characterized in that the outer cavity filled teplozvukoizolirujushchej material.

5. The boiler according to any one of paragraphs. 2-4, characterized in that the burner contains a spark-plug and pilot nozzle, the inner and outer annular gas manifolds, equipped with nozzles and connected to the fuel source via a controllable valve, and nozzle outer annular collector is installed at the end of the boiler with a shift towards the active zone.

6. The boiler according to any one of paragraphs. 2-5, characterized in that the pilot injector is equipped with an Autonomous source of fuel and is placed inside the casing of the boiler.

7. The boiler under item 5 or 6, characterized in that the nozzle inner and outer annular collectors made with the swirler air.

8. The heat exchanger of the active zone containing heat exchange tube connected with giving and receiving pipe boards and is made with two parts, the first and second, while the second section is a spiral, characterized in that it contains several of the above-mentioned tubes, the first section is made on the tube on the second site, in addition, the tube at the second site is laid in a spiral shell, while between the surfaces of the membranes formed by the gaps.

9. The heat exchanger of claim 8, characterized in that inside the main shell is installed with clearance to the surface of the displacer, the cavity of which is connected with a source of feed water.

10. The heat exchanger under item 8 or 9, characterized in that the first part of the heat exchanger tube made in the form of a spiral, the step which turns more step of turns of the second segment of the heat exchange tubes.

11. The heat exchanger of claim 10, wherein the pitch of the helix on the first segment of the heat exchange tube is made constant.

12. The heat exchanger of claim 10, wherein the pitch of the helix on the first segment of the heat exchange tube is made variable.

13. Heat exchanger according to item 12, wherein the pitch of the helix on the first segment of the heat exchange tube is made increasing as the distance from the tube plate.

14. The heat exchanger of claim 8 or 9, characterized in that the at least one heat exchange tube of the heat exchanger on the first segment is made straight, directed along the generatrix of the shell of the second leg and in contact with the pipe laid in a spiral shell.

15. The heat exchanger for any and the PP. 8-14, wherein the heat-exchange tubes in the first section performed in the form of a cylindrical shell.

16. The heat exchanger according to any one of paragraphs. 8 to 15, characterized in that the displacer is made cylindrical.

17. Heat exchanger according to item 16, characterized in that between the surfaces of the displacer and the Central shell are the first sections of the heat exchanger tubes.



 

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The heat exchanger // 2152574

System for steam // 2232936
The invention relates to systems produce steam and can be used in the petrochemical industry for the production of steam in tubular furnaces and boilers

Boiler installation // 2215935

The invention relates to energy and can be used in heat and power plants, operating on gaseous fuel with the implementation of full recovery of products of combustion, such as carbon dioxide in a liquefied state

The invention relates to energy and can be used in boilers, industrial furnaces and heaters that burn gas, liquid and solid fossil fuels

Boiler installation // 2187750
The invention relates to a power system and can be used in gas boilers and thermal power plants

Boiler installation // 2185569
The invention relates to a power system and can be used in gas boilers running on natural gas

The invention relates to the field of steam generation and can be used in the manufacture of mobile steam generators for waste heat recovery of associated petroleum gas, unfit for transport
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