Method of protection heating pipe from the frost and pipe of hot water supply
SUBSTANCE: method includes the steps of: if the heating temperature is lower than a predetermined temperature protection from freezing by the controller translate the three-way valve in the hot water supply mode and perform combustion operation in the heater and the circulation of heating water in a closed circuit consisting of the heating a heat exchanger, a three-way valve and the hot water heat exchanger by the pump. In the heat exchanger of hot water supply heat from the heating water transfer pipe hot water; and if the heating water temperature reaches a predetermined temperature by the controller to translate the three-way valve and the heating mode operation is carried out quench heater and circulating heating water for heating the pipe by driving a pump.
EFFECT: to prevent freezing of the heating pipe by applying a heating water temperature sensor positioned in the water heater, to prevent freezing pipes hot water by controlling the three-way valve.
4 cl, 2 dwg
FIELD: power industry.
SUBSTANCE: invention relates to the power industry and can be used in hot water accumulators to determine the content of heat in an accumulator. In order to determine the content of energy in a water volume, the water accumulator has a tank with an upper end relative to the ground and a lower end opposite to it; with that, in order to determine the content of energy in the water volume, an acoustic transmitter and an acoustic receiver are placed into the water, which can determine the time of the passage of sound in the water volume; with that, a provision is made for an analytical unit that can output an available content of energy based on the sound passage time; there is an indicator indicating the available content of energy depending on the current time of the sound passage; the tank is provided with the heat insulation to attenuate the sound signal.
EFFECT: invention allows increasing the ease of usage, especially at usage of accumulators of large volumes.
6 cl, 3 dwg
SUBSTANCE: described invention proposes control method of parallel operation of a multiple-unit water heater and provides for a group of water heaters parallel connected to each other, and involves the following stages: temperature measurement of straight-flow water supplied to multiple-unit water heater; reading of the specified temperature set by a consumer; calculation of difference between the specified temperature and straight-flow water temperature; and change of control value for additional activation of shutdown of each water heater in compliance with the calculated temperature difference.
EFFECT: effective operation of a multiple-unit water heater even at varying circumstances and operating conditions.
4 cl, 3 dwg
SUBSTANCE: in-line electric heater comprises a body, where a through channel is made, which determines the area of liquid heating, and heating elements may be arranged, which are designed for heating of liquid flowing through the through channel. The in-line electric heater also comprises a unit of flow rate limitation, which determines throughput section of the flow. The flow rate limitation unit is built into a body and comprises a valve element, which is at least partially submerged into a through channel. Besides, an in-line heater is developed with such heating unit.
EFFECT: simple, compact and cheap placement of a flow rate limitation unit, reduced costs for installation of a heating unit into an in-line heater, and such method of integration does not create potential weak points.
FIELD: power engineering.
SUBSTANCE: specified method provides for a procedure of so called "optimisation", which may be carried out by an electronic controller of a water heater. The procedure of "optimisation" is applicable for optimisation of maintained temperature by means of automatic reduction of the specified value T.set, if the water heater is not usually used at full power, i.e. if the user has set an unusually high temperature T.set for its actual use. Inventions also relate to the electronic controller and water heaters.
EFFECT: reduction of heat energy scattering in a water heater with a heat accumulator.
4 cl, 2 dwg
FIELD: power industry.
SUBSTANCE: invention refers to control method of multi-section boiler consisting of several sections installed in a row, which prevents exit gas thrust reversing. Each of the above sections is equipped with the following: sensor for measuring the head of the air supplied to combustion chamber, controller to control the rotation speed of the fan supplying the air to chamber according to the value measured with head sensor; at that, one of controllers is connected as primary controller and the others - as secondary ones. Primary and secondary controllers are connected to each other by means of communication line. Control method involves the following: measurement of the head of air supplied to combustion chamber by means of head sensor at controllers of operating sections; calculation by means of primary controller of average head in operating sections as per head values measured with their controllers; calculation on the basis of average head of the value of the required head on fans of sections not in operation; control of fans of sections not in operation on the basis of the calculated values.
EFFECT: possibility of creating cheaper multi-section boiler in which exit gas valves are not required, which also allows avoiding failures and reducing the maintenance costs.
12 cl, 5 dwg
FIELD: power industry.
SUBSTANCE: in the device there is provided gas temperature sensor, output signals of which are supplied back to gas temperature control assembly which in its turn is connected to the heating assembly with possibility of temperature control of gas leaving the heating assembly. Heating assembly is made in the form of electrically conducting cover or cavity through which gas or gas mixture is directly passed, and control is performed. In such case to the cover there supplied is the voltage controlled by means of control assembly in electric circuit; at that, owing to the current flowing in the circuit and material resistance the cover is heated, and as a result of which the gas or gas mixture is heated, after that gas temperature is measured and measurement results are supplied back to control assembly for control of voltage in compliance with gas temperature required at the outlet of cover or cavity.
EFFECT: invention allows accelerating the obtaining process of hot gas.
14 cl, 3 dwg
FIELD: power engineering.
SUBSTANCE: system of combined boilers includes device of boiler control, the first boiler efficiently connected to specified device of boiler control, and temperature sensor connected to specified first boiler. System also comprises at least one secondary boiler efficiently connected to specified main boiler. Device of boiler control is efficiently connected to the first boiler and makes it possible for the first boiler to control parametre of the first boiler and at least one secondary boiler.
EFFECT: invention provides for control of combined boiler, which eliminates necessity of individual link between separate boilers, centralised external control in system of combined boilers.
20 cl, 4 dwg
FIELD: power industry.
SUBSTANCE: there proposed is water heater flange including one or more electric resistances, thermostat at least with one temperature sensor and covering the hole in the reservoir of the above electric water heater; at that, flange has a cavity facing external surface of reservoir and located mainly and/or generally parallel to the plane formed with the flange, and at least one above-mentioned temperature sensor of thermostat is arranged in the above cavity. At least one temperature sensor has the surface section adjoined to surface of cavity; thermostat is of capsule type; thermostat is electronic; flange is installed on intermediate reservoir. There also proposed is water heater with heat accumulator, namely electric water heater equipped with the above described flange.
EFFECT: increasing its serviceability and measurement accuracy.
6 cl, 3 dwg
FIELD: water supply systems.
SUBSTANCE: invention relates to method of preparing a drink by feeding hot water into hot-drink proportioner with the help of fluid transfer circuit incorporating a heater. Aforesaid heater comprises thermal resistor and pump. With the device switched on, fluid gets heated on feeding preset mean electric power to thermal resistor for it to keep on heating circulating fluid at constant rated flow rate of 0.5-1.5 centiliter/s. Note that mean electric power of thermal resistor makes the value in watts that its ratio to rated flow rate in centiliter per second exceeds 2000.
EFFECT: time savings.
26 cl, 6 dwg
SUBSTANCE: invention is meant for heating water and can be used in transport technology. Invented is an air heater used in transport with a burner and heat-transfer agent in it, device for controlling the burning of the burner flame and device for supplying heated air through the heat-transfer agent. The device for controlling burning of the flame is provided with a device for measuring temperature of the heated air, flowing through the air heater. The device for measuring temperature is supplied with the first sensor for measuring temperature of the air leaving the air heater. The device for measuring temperature can calculate the temperature gradient of the flowing heated air. The device for measuring temperature is provided with a second sensor for measuring temperature of heated air flowing into the heater. The device for measuring temperature can calculate the temperature gradient of the heated air flowing into the heater, and also the difference in the temperature gradients of the heated air flowing in and the heated air flowing out.
EFFECT: increase in efficiency and operational safety of the heater.
7 cl, 1 dwg
FIELD: power industry.
SUBSTANCE: consumer water heating system contains the tank for heating of the water pumped from the water supply source through the pipeline comprising the valve regulated by a control unit, temperature, flow rate and pressure sensors, the mixing chamber, one or two blowing fans. The tank for water heating is fitted with the water level sensor and the water mixer, the coil along the whole area of the tank is installed in the tank. The coil is installed with a possibility of dismantling and made of the material with high heat conductivity. The inlet pipeline of combustion gases of boiler plant is connected to the coil inlet. The tank is connected with the circulation pump, the adjustable control unit through the pipeline comprising temperature, flow rate and pressure sensors. The circulation pump through the valves regulated by control units is connected with the recirculation pipeline for water supply into the tank and the pipeline for water supply into the mixing chamber. The system is fitted with the pressure safety valve.
EFFECT: expansion of scope of application, improvement of efficiency of heating capacity of combustion gases, automation of the control system.
4 cl, 3 dwg
SUBSTANCE: group of inventions relates to valve building and is designed for equalisation of pressures in hydraulic networks of buildings, in which fluid medium flow rate is different and depends on a season. Equalising valve (1) with damper (2) has inlet (A) and outlet (B) and is installed after temperature-controlled element (3) connected to branch (4) of hydraulic network (5) with generally constant pressure (ΔP). The equalising valve is provided with measuring devices (7) of characteristic value of fluid medium circulating through equalising valve (1), position control devices (8) of damper (2) of equalising valve (1), data storage devices (11), in which internal and external parameters of equalising valve (1) are stored, and independent processing devices (10), which are designed so that automatic equalisation in branch (4) can be provided using magnitudes of characteristic value of fluid medium, which are obtained by means of measuring devices (7), control devices (8) and data stored in storage devices (11). There are methods for implementation of the above pressure equalisation operations.
EFFECT: group of inventions is aimed at easy operation, accessibility for any user, saving of time during installation and funds during the service life.
14 cl, 6 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to a method for optimised functioning as to power of a motor-driven pump in a hydraulic system with at least one self-adjustable consumer. Predetermined head (Hsoll) of the pump is controlled depending on its volumetric flow rate (Q) according to the controlled basic characteristic curve, which is determined by means of pre-determined specified value (HK) of the characteristic curve. Volumetric flow rate (Q) pumped with the pump is determined, and its trend (δQ) is determined, and depending on volumetric flow rate (Q) and/or its trend (δQ) the specified value of characteristic curve (HK) is increased when volumetric flow rate (Q) is increased, or decreased when volumetric flow rate (Q) is decreased.
EFFECT: invention is aimed at optimum matching of hydraulic power of the pump with its corresponding working point in a hydraulic system.
21 cl, 13 dwg
FIELD: machine building.
SUBSTANCE: valve has the housing 1 with input 3, output 4 and offtake branch pipes 5. Between internal hollow of the housing 1 and output 4 and offtake branch pipes 5 the seats 6, 7 are located. The housing 1 has a valve block with the valve trays 8, 9, installed on a rotary lever 10 with a possibility of contact of the tray 8 with the seat 6 in one extreme angular position of the rotary lever 10 and the tray 9 with the seat 7 in the other extreme angular position of the rotary lever 10. The axis 11 of the lever 10 is located between output 4 and offtake branch pipes 5 perpendicularly to the plain with the axes of these branch pipes. On the housing 1 fitting is installed, through which in parallel to axis 11 a movable rod of the valve block moving device passes The named facilities also contain the motion booster in the form of double-shoulder lever. The named rod from one end interacts with a heat head thruster, and from another one - with the smaller shoulder of the double-shoulder lever. The greater shoulder of the double-shoulder lever passes through a sealing element. The double-shoulder lever is spring-bias towards the side of pressing of the valve tray 8 to seat 6, adjacent to the output branch pipe 4.
EFFECT: improvement of accuracy of temperature regulation, lowering of hydraulic resistance to the heat carrier flow and improvement of convenience of valve operation.
5 cl, 3 dwg
SUBSTANCE: present invention relates to a method of controlling the maintaining water temperature in the water heater with the heat accumulator controlled by the electronic regulator. The method of controlling the water heater with a heat accumulator in which water heating is carried out by the heating element, controlled by the regulator, which can bring the water temperature to a variable target temperature, and which comprises: defining moment (tONk; t'ONi) of the start of heating to ensure intakes (Pk; Pi) of water comprises the following stages: at short time intervals (δW) all the w intakes are accounted (P1, …, Pi, …, Pw), which moment of start (ti) falls on the specified time window (Δtw) immediately following the current moment of time, and the time window (Δtw) is selected based on the type of water supply system, for which the water heater (1) is designed, and is sufficiently extended to include the moment (ti) of start of all the intakes (Pi), which moments (t'ONi) of the start of imaginary heating presumably precede the moments (t'ON) which correspond to (i-1) preceding intakes (P1, …, Pi-1), at the said moment (ti) of start of intake which falls on the time window (Δtw), the same number of imaginary intakes (P'1, …,P'i, …, P'w) is constructed each of which has the same moment (tw) of start as the start moment of the corresponding real intake (Pi), and the initial temperature (T'set.i) of the imaginary intake determined by adding the initial temperatures (Tset1, Tset2, …, Tset (i-1)) of all water intakes accounted for the time window (Δtw) and preceding the intake itself (Pi), and the corresponding initial temperature (Tset.i) of real intake, on the basis of which each initial temperature (Tset1, Tset2, …, Tset (i-1)) is determined of the optimum temperature (Topt) of discharge according to the formula T'set.i=Tset.i+(Tset1-Topt)+(Tset2-Topt)+…+(Tset(i-1)-Topt), for each of the imaginary intakes (P'1, …, P'i, …, P'w) the moment is calculated (t'ONi) of start of imaginary heating according to the formula t'ONi=ti-(T'set.i-Tm)/VTh, on reaching the earliest of the moments (t'ONi) of start of heating the target temperature (Ttarget) is set at an initial temperature level (T'set.i) of the corresponding imaginary intake (P'i), at that it is understood that the upper limit of the said target temperature (Ttarget) is the maximum set temperature (Tset.max), and to achieve the earliest of the moments (t'ONi) of the start of heating the temperature is maintained (Ttarget) equal to the maintaining temperature (Tstand-by), and the said maintaining temperature (Tstand-by) is the temperature maintained at moments of time remote from the moments of the intake.
EFFECT: invention enables in the planned mode to change with the passage of time the temperature in the water tank.
29 cl, 4 dwg
SUBSTANCE: essence of information-measuring and control system of optimisation of production and consumption of heat energy at the distributed facilities of heat supply comprises a first circuit with a heat source (gas boiler), a heat exchanger, a second circuit of the heat network, a temperature sensor in the straight pipeline of the first circuit, a temperature sensor in the return pipeline of the second circuit, a pressure sensor in the straight pipeline of the second circuit, a gas supply regulator, a gas flow sensor, a fan, an air temperature sensor, an air flow rate sensor, a temperature sensor of waste gases, a metre of produced heat energy, a multichannel microprocessor control unit of energy saving in production of heat energy, a memory unit, a control centre of receiving the information, a unit of control the combustion process in the boiler, a heat supply system, a control unit of heat energy consumption, and the first circuit with a heat source (gas boiler), the first output of which is connected to the input of the temperature sensor of waste gases and through the heat exchanger is connected to the second circuit of the heat network, is connected to the input of the temperature sensor in the straight pipeline of the first circuit, three outputs of the second circuit are connected to the inputs of the temperature sensor in the return pipeline, the pressure sensor in the straight pipeline, the metre of produced heat energy, the outputs of which are connected to the inputs of the multichannel microprocessor control unit of energy saving in production of heat energy, the output of the gas supply regulator by the of gas flow rate sensor is connected to the first input of the boiler, the output of the fan through the air temperature sensor, the air flow rate sensor is connected to the second input of the boiler, the outputs of the gas flow rate sensor, air flow rate sensor, air temperature sensor, temperature sensor of waste gases are connected to the inputs of the multichannel microprocessor control unit of energy saving in production of heat energy, the first output of which is connected to the input of the memory unit, the second output is connected to the input of the control centre of receiving information, the second, third, fourth inputs of the control centre of receiving information are connected to the outputs of the heat supply system by the control units of heat energy consumption, which fourth, fifth, sixth outputs of the second circuit are connected to the inputs of heat supply systems, the output of the control centre of receiving information by the control unit of the combustion process in the boiler is connected to the inputs of gas supply regulator and the fan. Thus, the information-measuring and control system of optimisation of production and consumption of heat energy at the distributed facilities of heat supply enables to optimise the process of production and consumption of heat energy at the distributed facilities of heat supply and to improve energy efficiency of operation of the presented facilities.
EFFECT: enhancing the technological capabilities of the device by controlling a variety of distributed facilities of heat supply in order to increase their efficiency in accordance with the concept of best available techniques.
SUBSTANCE: information and measuring system for monitoring of energy saving at production of thermal energy includes the first circuit with a heat source (a gas boiler), a heat exchanger, the second circuit of a heat network, a temperature sensor in a direct pipeline of the first circuit, a temperature sensor in a return pipeline of the second circuit, a pressure sensor in the direct pipeline of the second circuit, a gas supply control, a gas flow sensor, a fan, an air temperature sensor, an air flow sensor, a waste gas temperature sensor, a produced thermal energy metre, a multi-channel microprocessor energy saving monitoring unit at production of thermal energy, a memory unit, a dispatch information receiving centre; besides, the first circuit with the heat source (gas boiler), the first outlet of which is connected to the inlet of the waste gas temperature sensor and through the heat exchanger is connected to the second circuit of the heat network, is connected to the inlet of the temperature sensor in the direct pipeline of the first circuit; three outlets of the second circuits are connected to inlets of the temperature sensor in the return pipeline, a pressure sensor in the direct pipeline, a produced thermal energy metre, the outlets of which are connected to inlets of the multi-channel microprocessor unit for monitoring of energy saving at production of thermal energy; the outlet of the gas supply control is connected by means of the gas flow rate to the first boiler inlet; the fan outlet is connected by means of the air temperature sensor, the air flow sensor to the second boiler inlet; outlets of the gas flow sensor, the air flow sensor, the air temperature sensor, the waste gas temperature sensor are connected to inlets of the multi-channel microprocessor unit for monitoring of energy saving at production of thermal energy, the first outlet of which is connected to the inlet of the memory unit, and the other outlet is connected to the inlet of the dispatch information receiving centre.
EFFECT: invention allows optimising a thermal energy production process at distributed heat supply facilities and improving energy efficiency of operation of the presented items.
FIELD: power engineering.
SUBSTANCE: control system includes a source of heat, supply and return pipelines, a unit of coolant flow rate control, comprising a flow rate controller and sensors of flow rate, temperature and pressure, installed on supply and return pipelines, a circulating pump, a heat energy processor, linked to sensors and the controller. To achieve the technical result, the unit of coolant flow rate control is equipped with sensors of temperature of external and internal air, at the same time the unit of coolant flow rate control, the circulating pump and the heat energy processor are installed on a load with higher thermal load, other loads of the system are equipped with sensors of coolant flow rate and sensors of internal air temperature, connected to the heat energy processor.
EFFECT: control of heat consumption of a group of loads without installation of a full complex of automatics devices with preservation of the temperature mode, which are connected to heat networks of buildings, which makes it possible to save capital costs, service costs, saving of thermal and electric energy.
FIELD: machine building.
SUBSTANCE: first output of the first circuit with heat source, a gas boiler, is connected with discharge gas temperature gage input and, via heat exchanger, with heat network second circuit. Second circuit three outputs are connected with return pipeline pressure age, forward pipeline pressure gage, their outputs being connected with inputs of multichannel microprocessor unit for control over power saving control in heat power production. Gas feed controller output is connected via gas flow rate metre with boiler first inlet. Blower outlet is connected via air temperature gage and air flow rate gage with boiler second outlet. First output of said microprocessor unit is connected with memory unit with its second output connected to dispatcher data acquisition centre input. Output of the centre is connected via boiler combustion control unit with gas feed and blower controller inputs.
EFFECT: optimised heat production and higher efficiency.
FIELD: machine building.
SUBSTANCE: proposed system comprises at least two temperature control circuits 2, 3, 4. Pressure control unit 18, 19, 20 is arranged to simplify and to optimise power consumption in every circuit 2, 3, 4. Pressure control units 18, 19, 20 allow invariable pressure difference in appropriate circuit 2, 3, 4. Pressure control units 18, 19, 20 equalise pressure difference in all said circuits.
EFFECT: power savings, better convenience.
11 cl, 4 dwg
SUBSTANCE: device has indicator panels which number is equal to time period of indication.
EFFECT: simplified design.
13 cl, 1 dwg