Control method of pump with variable feed, which is installed in heating system
FIELD: engines and pumps.
SUBSTANCE: control method of a pump with variable feed, which is installed in a heating system comprising a heat exchanger connected to two circuits of fluid substances. The pump with variable feed allows changing the flow velocity of the first fluid substance inside the heat exchanger; the return circuit in the primary circuit, which allows the first fluid substance reaching the heat exchanger inlet to be mixed with some part of the first fluid substance leaving the heat exchanger outlet; the first temperature sensor (S1) measuring temperature (T1) of the second fluid substance leaving the secondary circuit, the second temperature sensor (S3) measuring temperature (T3) of the first fluid substance leaving the primary circuit; and a control unit electrically connected to the above first and second temperature sensors (S1, S3). The above sensors (S1, S3) generate electric signals in functions of temperatures (T1) and (T3) and create input electric signals of the control unit.
EFFECT: possible adjustment of control of a pump with variable feed taking into account temperatures of both fluid substances at corresponding outlets of the heat exchanger.
16 cl, 2 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
FIELD: heating plants.
SUBSTANCE: heating plant system has central unit 1 for producing heat and providing hot primary fluid, set of local units 5 any of which has heat exchange device 13, 14 and circuit of pipelines 2, 2' drawn inside circulation system from unit 1. Any local unit intends for getting hot primary fluid through unit 13, 14 of heat exchanger. First and second local units 5 have corresponding control 27. Control unit has first aid 17, 21, 27, 29-32, 33-40, 62 and 63 for providing at least one parameter relating to need of corresponding local unit 5 in hot primary fluid. Second aid 16 performs operation of corresponding local unit 5. Second aid has at least member 25, 26 for acting on flow by hot primary fluid through local unit 5. Local unit 5 has first secondary circulation system intended for heating. Heat exchanger unit has second heat exchanger 14 for second secondary circulation system 12 for producing hot water. Control unit 27 has communication device 50 providing info transmission on mentioned parameter 17, 21, 27, 29-32, 33-40, 62, 63 from at least second local unit to first local unit 5. Control unit 27 of first local unit 5 intends for controlling operation of local unit 5 correspondingly to parameter relating to second local unit 5. There are also descriptions of local unit of heating plant system, control unit for local unit of heating plant system and method of operation of heating plant system.
EFFECT: improved efficiency of control of heating plant system.
38 cl, 3 dwg
FIELD: heat supply systems.
SUBSTANCE: method comprises supplying fluid from the additional collector interposed between the fluid source and the system of the auxiliary supplying collector. The supplying auxiliary collector is made of cylindrical dropping supplying device with inlet port, outlet port, and freely moving plunger that can close the inlet port providing small passage for outflow. The heating system is connected with the source of fluid under pressure through the dropping device.
EFFECT: expanded functional capabilities.
13 cl, 1 dwg
FIELD: heat supply systems.
SUBSTANCE: invention relates to dispatcher control and servicing of centralized heat supply system with great number of local (peripheral) units. Proposed system contains central heat-generating unit to supply great number of local units with hat primary liquid. Each local unit includes heat exchanger and pipeline network. Pipeline network includes supply pipeline to transfer primary liquid from heat-generating unit into each local unit. Each local unit is connected with supply pipeline and is made for receiving primary liquid through primary side of heat exchanger designed to transfer heat of secondary liquid which flows through secondary side of heat exchanger. Each local unit includes first devices made for obtaining at least one primary parameter which is related with efficiency of heat transfer. Each local unit includes first communication device which is made for transmission of instantaneous value of first parameter into second device of communication system. System includes second devices interacting with second communication device and made for revealing local unit servicing of which is most required depending on instantaneous value of first parameter.
EFFECT: improved checking of efficiency of centralized heat supply system.
34 cl, 2 dwg
SUBSTANCE: inserted radiator valve with connecting member comprises housing and seal zone for sealing the region of the connection with the supplying or discharging connecting pipe. The seal zone is made of the first radial inner seal that acts inside and the second radial outer seal that acts from outside. The first seal and the second seal are interconnected through the opening provided in the housing.
EFFECT: enhanced functional capabilities.
10 cl, 3 dwg
FIELD: heating systems.
SUBSTANCE: method comprises control of temperature of at least one of secondary flows of fluid in the secondary circuit which outflows from heat exchanger (1) by means of the primary flow in the primary circuit with the use of control members (5) and (11) that control the primary flow under the action of control unit (7), determining the difference of enthalpies of the primary flow that enters heat exchanger (1) and primary flow that leaves heat exchanger (1), measuring the secondary flow, measuring the flow in the primary circuit, and sending the parameters determined to control unit (7) for control of control members (5) and (11). As a result, the primary flow is controlled by the secondary flow so that the power supplied to the heat exchanger with the primary flow is, in fact, equal to the sum of the power required for the heating of the secondary fluid from the initial current temperature up to the specified outlet temperature, power required for the compensation of energy stored in heat exchanger (1), and power losses from heat exchanger (1). The description of the device for control of water temperature is also presented.
EFFECT: enhanced reliability.
13 cl, 9 dwg
FIELD: the invention refers to a heating arrangement with a radiator equipped with branch pipes of feeding and taking off lines and also with a block of temperature sensors installed with possibility of heat exchanging with the indicated branch pipes of the feeding and the taking off lines.
SUBSTANCE: the heating arrangement is fulfilled with a radiator equipped with branch pipes of the feeding and the taking off lines, and also with the block of temperature sensors installed with possibility of heat exchanging with the indicated branch pipes of the feeding and the taking off lines. At that the branch pipe of the feeding line and the branch pipe of the taking off line pass through an adapter and the block of temperature sensors is installed with possibility of heat exchanging with the adapter. At that a data processing arrangement is fixed to the adapter with using a joint connection.
EFFECT: simplification of mounting.
9 cl, 4 dwg
FIELD: system for heating premises with heated floor.
SUBSTANCE: system for heating premises with heated floor contains floor heating system and room thermostat, equipped with room micro-climate sensor and connected to controlling block of floor heating system. Room thermostat has surface temperature sensor, determining floor surface temperature at a distance from it. Room thermostat is equipped with block for selecting minimal/maximal surface temperature value.
EFFECT: improved temperature control in premises.
1 cl, 2 dwg
FIELD: heat-power engineering, possible use in heat supply systems with dependent circuit of connection of heating systems in form of automated heating station.
SUBSTANCE: automated heating station of heating and hot water supply system contains feeding pipeline of heating network with flow controller mounted in it, feeding and reversing heating system pipelines, mixing pump, heating controller, inputs of which are connected to temperature indicators in heating system and environment, water-heating device for hot water supply system, installed between feeding and reversing pipelines of heating network, control input of flow controller being connected to control unit output, input of which is connected to outputs of heating system parameter indicators. Frequency transformer is introduced into heating station of heating system, and as mixing pump, pump with possible working frequency adjustment is used. Output of heating controller is connected to input of frequency transformer, output of which is connected to electric outputs of mixing pump. Mixing pump is installed in input-output direction between reverse and direct pipelines of the heating system. A variant of automated heating station of heating and hot water supply system is also described.
EFFECT: lower electric energy costs, increased lifetime of equipment, maintained consistency of heat carrier flow in heating system.
2 cl, 6 dwg
FIELD: engineering of armature for measuring, controlling, cleaning and stabilizing pressure for liquid supply systems, possible use, in particular, for supplying water in domestic buildings, cottages, and other consumers in any industrial branch involving supplying of a liquid component.
SUBSTANCE: measuring, monitoring and cleaning device for liquid feeding systems contains body, locking element, pressure regulator, liquid meter. Device additionally includes filtration and washing device. Locking element, pressure regulator, liquid meter and filtration and washing device are assembled in single case. Locking element is positioned in liquid inlet connection. Pressure regulator is positioned between liquid inlet and liquid outlet connections, and detachably connected to the case. By means of detachable connection, filtration and washing device is mounted in the case. This device is connected by a collector to pressure regulator hollow and the hollow after the locking element. A filter is mounted at the inlet of pressure regulator hollow. Liquid meter is mounted in the body by means of detachable connection. Outlet hollow of liquid meter is connected to liquid outlet connection. Its inlet hollow by means of another collector is connected to the pressure regulator hollow.
EFFECT: minimized dimensions of device due to combination of locking armature and filtering means in one unit, stabilization of pressure, recording of water (liquid) consumption, possible replacement of devices and elements of armature without disassembly of the whole device and without disabling the liquid feeding system and without requirements for its flush, measuring and monitoring elements are protected from dirt in working mode and during maintenance operations (washing).
2 cl, 2 dwg