Automated system to control coolant flow rate for heat supply of group of loads
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.
The invention relates to the field of heat, and can be used in district heating systems deadlock thermal networks.
Known control system of a heat supply (see ed. mon. The USSR №1343196, IPC F24D 19/10, published. 07.10.1987)containing temperature sensors in the supply and return pipelines and temperature sensors outdoor air and indoor air, connected to the controller, the Manager with the actuator control valve, the actuator is equipped with limit microswitches.
Also known control system of a heat supply (see patent No. 2196274, IPC F24D 19/10, published. 10.01.2003), which includes sensors for measuring the temperature of the coolant supply and return piping, outside air temperature and the air inside the building, as well as regulating valve controlled by the controller.
The disadvantages of these systems, if implemented systems for consumer groups, is the need to incorporate a full range of automation devices for each of the consumers.
Technically close to the stated control system is a control system of a heat supply (see the patent for useful model No. 15775, IPC F24D 19/10, published. 10.11.2000)containing the heat source, the supply and return pipes closed heating network with larger connecting apertures is inanime to him drainage supply and return piping heating each of the consumers, site measurement, control and regulation of the coolant flow with flow sensors, temperature and pressure mounted on the supply and return pipelines, flow regulators, pressure and differential pressure, circulation pump, teploenergoresur associated with sensors and controllers.
The disadvantages of this system of regulation can be attributed to the redundancy of regulatory elements, the difficulty in precisely determining the necessary amount of heat to consumers in the absence of sensors internal and external air, and the increased cost of electricity to drive the circulation pump.
The technical result achieved by the present invention is the ability of heat regulation consumer groups without installing a full range of automation devices, while maintaining the temperature connected to heat networks of buildings.
The result is achieved that an automated system for controlling water flow to the heat consumer groups containing a heat source, supply and return pipes closed thermal network connected drainage supply and return piping heating each of the consumers, the control unit coolant flow, including the flow regulator and dates the IKI flow, temperature and pressure mounted on the supply and return pipelines, pump, teploenergoresur associated with sensors and controller, characterized in that the control unit of the flow rate of the coolant supplied by the temperature sensors outside and inside air, and the flow rate control unit coolant circulation pump and teploenergoresur installed on the consumer with the highest heat load (automated user), other users of the system (manual consumers) are equipped with sensors, flow, and temperature sensors internal air associated with teploenergoresur.
In Fig. shows a control system of a heat supply, where: 1 - the source of heat, 2 - automated user, 3 - user manual, 4 - teploenergoresur (TEP), 5 - supply pipe, 6 - return pipe, 7 - sensor coolant flow, 8 - flow regulator coolant, 9 - a set of sensors automated consumer, includes flow sensors, temperature and pressure of the coolant, 10 - circulating pump, 11 - temperature sensor of indoor air, 12 - temperature sensor, outdoor air.
Automated control system works as follows:
When change the environmental parameters so what you will need to increase the heat load consumers, TEC 4 gives a signal to the flow regulator 8 to increase the flow in automated user 2, which allows to maintain the desired temperature of the inside air aided 2 user, at the same time, user manual 3 begins to experience a shortage of thermal energy, which leads to a gradual reduction of the indoor air temperature monitored by sensor 11. When the temperature of the internal air user manual 3 to the lower limit, TEC 4 gives a signal to the flow regulator 8 to reduce flow in automated user 2, which leads to an increase of the expenditure on non-automated user 3 by increasing the pressure in the heating system. The expenditures for automated user is until until the consumption of non-automated user 3 does not reach the minimum required values ofdefined as follows:
where: Q - the current consumption of the building (Gcal/h)
c is the heat capacity of coolant (kcal/(kg·°C)),
tbelow.- current temperature in the delivery pipe (°C),
tarr.- the current temperature is round in return pipe (°C).
The current consumption of the building is defined by:
where: Qest.- current consumption of the building (Gcal/h)
- estimated internal air temperature (°C),
- estimated outside air temperature (°C),
tn- the current outdoor temperature (°C).
The current value of the temperature tntracked TEP 4 by means of the sensor 12, the current values of the temperature tarr., tbelow.with the aid of complex sensors 9.
Using the flow sensor 7 TEP 4 monitors the change of the expenditure on non-automated consumer, after reaching the value of consumption is equal to, TEC 4 stops to signal to the flow controller 8, thereby stabilizing the system, and then starts warming up manual user 3, and automated consumer 2 is gradually cooled, spending the accumulated heat. As soon as the temperature of the internal air user manual 3 reaches the upper limit, or the temperature of the inside air aided consumer 2 drops to the lower limit, TEC 4 returns the system to its original state.
Thus, the cycles of redistribution of costs which allow to observe the temperature regime is connected to the heat network of consumers without installing additional regulating devices, saving capital costs for installation of automatic devices and the cost of their maintenance, and also to save heat and electricity.
An automated system for controlling water flow to the heat consumer groups containing a heat source, supply and return pipes closed thermal network connected drainage supply and return piping heating each of the consumers, the control unit coolant flow, including the flow regulator and flow sensors, temperature and pressure, installed in supply and return pipelines, pump, teploenergoresur associated with the sensors and the controller, wherein the flow rate control unit coolant is supplied with temperature sensors outside and inside air, and the flow rate control unit coolant circulation pump and teploenergoresur installed on the consumer the greatest heat load, the other users of the system with sensors in the coolant flow rate and temperature sensors internal air associated with teploenergoresur.
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
FIELD: power engineering.
SUBSTANCE: device to adjust and control the flow in heating and cooling systems, in which the flow is controlled with a complete valve, which is a combination of a differential pressure valve (5) and a flow control valve (6). In this device the design of the complete valve provides for flow/passage of water via that piping system, in which this valve is mounted. At the same time the levels of pressure difference P1 at the inlet (2), P2 in the intermediate chamber (4) and P3 at the outlet (3) are measured with metering nipples (27a and 27b), while the pressure difference of P2 and P3 during operation may be controlled.
EFFECT: improved characteristics of a device.
8 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: three-way valve includes body 1 with inlet 2, outlet 3, discharge and valve 5 branch pipes and controlled valve block 6 with sleeve 7, stock 8 and valve plate 9. Inlet 2 and outlet 3 branch pipes of housing 1 are located on one and the same axis and separated with solid partition wall 10. Discharge branch pipe is located at a right angle to branch pipes 2, 3 and interconnected with cavity 11 of inlet branch pipe 2. Valve branch pipe 5 is located perpendicular to the plane of axes of inlet 2, outlet 3 and discharge branch pipes. Its cavity 12 is interconnected through hole 13 with cavity 11 of inlet branch pipe 2, and through channel 14 with cavity 15 of outlet branch pipe 3. On surface 16 of inlet branch pipe 2 inside cavity 12 of valve branch pipe 5 there is valve seat 17 for fitting of valve plate 9. Stock 8 of valve block 6 is installed in sleeve 7 with possibility of back-and-forth movement with projection of its end 18 on one side of sleeve 7 and with projection of end 19 on the other side. Valve plate 9 is fixed on end 19. Stock 8 is spring-loaded in sleeve 7 in the direction of displacement of end 18 from sleeve 7. Sleeve 7 is rigidly fixed in valve branch pipe 5 with possibility of contact of valve plate 9 with valve seat 17 at movement of stock 8 inside body 1 and provided with section 20 of external thread located on the outside to fix an element controlled by the valve. Minimum cross sectional area of channel 14, as well as cross sectional area of hole 21 is less than cross sectional area of hole 13 attaching cavity 11 of inlet branch pipe 2 to cavity 12 of valve branch pipe 5.
EFFECT: enlarging the number of devices for smooth adjustment of a heating degree of a heating appliance, and improving reliability.
6 cl, 5 dwg
SUBSTANCE: single-pipe heat supply system with heat carrier flow control, in which control means of flow rate and supply of heat carrier to the stand pipe of the single-pipe system of typical arrangement are used, for example for building cooperatives, for heat supply to radiators in compartments. The proposed control method relates to control of heat carrier temperature in response to changes of external parameters (temperature) and flow rate in response to changes of heat carrier temperature in return pipeline.
EFFECT: use in the single-pipe heat supply system of double control makes this single-pipe heat supply system high-efficient with power consumption depending on load.
15 cl, 6 dwg
FIELD: machine building.
SUBSTANCE: system comprises the following: pressure sensors at the pump inlet and outlet, static power converter, temperature sensors and vibration measurement sensor and ratings of the pump together with a new flow rate characteristic Q=f(M). System is equipped with data transfer system, as per all controlled parameters, to the dispatch station equipped with the computer containing the data base for all measured parameters; received information is transferred via data transfer system to the dispatch station to be analysed and stored.
EFFECT: automated information system provides continuous monitoring and analysis of each pump unit, volumetric and mass flow rate of pumped liquid, pressure created with the pump, consumed power, efficiency coefficient of the pump, specific consumption of electric power, time to failure, bearing temperature of the pump house, pump housing temperature and vibration level.
SUBSTANCE: present invention refers to hot water supply system heating the low temperature water by means of heating device, which is supplied to the inlet hole, to high temperature, and supplying the high temperature water through the outlet hole. The above system includes the following components: heat exchanger transmitting the heat of the heating device to incoming water so that the incoming water can be heated to the temperature specified by the consumer; flow metre measuring the water flow rate supplied to hot water supply system, water tank containing the water leaving the heat exchanger; temperature transmitter installed in the specified position on the pipe via which the water flows. Besides, the above system includes the control device equipped with input device by means of which the consumer can specify the required values of parameters.
EFFECT: control device controls the operation of the heating device by comparing the temperature specified by the consumer to the temperature measured with the temperature transmitter, as well as depending on the change of flow rate value measured with the flow rate metre, which allows maintaining the consumer specified temperature.
6 cl, 12 dwg
SUBSTANCE: heat station protection system includes cutoff valves of normally open type, which are installed in supply and return pipelines. Cutoff valve in return valve is set for the closing force that exceeds the closing force of cutoff valve installed in supply pipeline by 30-40%. Pressure sensor is made in the form of an impulse valve. The latter is directly connected on one side by means of an impulse tube to return pipelines, and on the other side by means of impulse tubes through cable group to drives of cutoff valves. Two control throttles and a nozzle are made in the above valve unit. Protection system is connected to impulse tube drain.
EFFECT: improving reliability of the protection system owing to using the energy of the working medium itself and organising safe high-velocity operating mode of cutoff valves.
FIELD: power industry.
SUBSTANCE: hot water supply system includes the following: flow transmitter, heat exchanger, water tank, temperature sensor, controller equipped with inlet device, and pump installed on the pipe connecting the first branching point provided on the pipe on the outlet side to the second branching point provided on the pipe on the inlet side. The proposed method provides for the following stages: flow rate of the water supplied to hot water supply system is measured by means of flow transmitter; pre-heated water is brought by means of a pump into circulation movement in hot water supply system along internal circuit connecting the first branching point, the second branching point and heat exchanger. The above stage is implemented after the controller switches off the heating device, when the measured flow rate becomes equal to or less than operational flow rate of water supply system; circulating water temperature is measured by means of temperature sensor and the pre-set temperature exceeding the temperature specified by the consumer is specified.
EFFECT: possibility of controlling hot water temperature even at low water pressure at the system outlet, or at low operational flow rate.
6 cl, 6 dwg
FIELD: machine building.
SUBSTANCE: proposed valve comprises cone 9 interacting with valve seat 10. Said valve elements interact also with veil 12. Valve seat 10 makes as a part of backup ring that double as a combined sealing element. The latter seals cone 9 and valve body 1 at a time. Cone 9 has cylindrical section with cutouts. Veil 12 in valve body 1 makes a screen-wall. Its serves to surround seat and cone to constrict maximum flow via valve, and may turn relative to valve body passage 13 and control the flow through valve. Veil bottom edge features the shape of staircase. This shape allows sequential increase in flow. Flow is controlled by varying pressure drop in measuring nipple 2 on valve inlet side 5 and on appropriate measuring nipple 2 on valve outlet side 6.
EFFECT: higher reliability of operation.
15 cl, 5 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