CN106123107A - Possesses the energy-saving control device for central heating heat exchange station of function of measuring - Google Patents
Possesses the energy-saving control device for central heating heat exchange station of function of measuring Download PDFInfo
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- CN106123107A CN106123107A CN201610538249.7A CN201610538249A CN106123107A CN 106123107 A CN106123107 A CN 106123107A CN 201610538249 A CN201610538249 A CN 201610538249A CN 106123107 A CN106123107 A CN 106123107A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 173
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 230000003020 moisturizing effect Effects 0.000 claims description 43
- 239000008400 supply water Substances 0.000 claims description 42
- 239000007788 liquid Substances 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
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- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Possesses the energy-saving control device for central heating heat exchange station of function of measuring, heat exchange station includes a secondary net thermal source, secondary network user, water knockout drum, heat exchanger package, fluid level transmitter and condensate tank, one secondary net thermal source outlet is connected with heat exchanger package primary side water inlet with primary side motor regulated valve by the vortex-shedding meter of series connection, heat exchanger package primary side outlet pipe outlet accesses condensate tank water inlet, condensate tank outlet and a secondary net thermal source water return outlet are connected, and vortex-shedding meter is for detection one secondary net water supply flow；Heat exchanger package secondary side outlet water inlet with secondary network user after water knockout drum is connected, and secondary network user's water return outlet is by circulating pump group and heat exchanger package secondary side water inlet；Heat exchanger package includes at least one heat exchanger；Energy-saving control device includes: secondary water-supply temperature control modules, secondary are for backwater pressure reduction regulation control module, secondary backwater constant DP control module, heat exchange station centralized Control terminal and sensor group.
Description
Technical field
The present invention relates to the Energy Saving Control of central heating heat exchange station, be specially a kind of centralized heating and energy conservation and control device.
Background technology
The indispensable measure that central heating is warmed oneself as north of china in winter, occupies larger proportion in building energy consumption.Existing
Central heating system, have employed heat exchange station as secondary as between a secondary net thermal source and the secondary network user of a secondary net
One secondary net thermal source of net, becomes suitable for secondary network user by heat exchange station by the high-temperature-hot-water in a secondary net once net thermal source and adopts
The warm hot water using lower temperature also passes through secondary network to secondary network user's heat supply.Heat exchange station is as the terminal and two of a secondary net
One secondary net thermal source of secondary net, is the key node of whole central heating system, by comprehensively detecting it and reasonably
Control to become intelligent heat supply and control the emphasis in research.It is the confession with outdoor temperature as function that traditional heat exchange station controls thinking
Coolant-temperature gage controls, and after computer auto-detection outdoor temperature, superposition is entered in corresponding heat supply regulating loop, becomes according to outdoor temperature
Change, be automatically adjusted heating demand.But above-mentioned regulative mode there is problems in that (1) secondary water-supply difficult control of temperature, control
Mode is single, it is impossible to use the most energy-conservation method of operation according to different situations, different demand, different periods；(2) regulation valve power consumption
Seriously.Circulating pump and small pump output flow cannot change along with heat load and the change of ductwork pressure, but protect all the time
Hold constant flow.When needs regulation flow, generally big valve is opened in employing or pass minor valve artificially regulates, regulation week
Phase is long, causes the significant wastage of electric energy and is difficult to mix up.Moreover on valve, create supplementary loss, waste a large amount of equally
The energy.Use frequency conversion speed-adjusting system that circulating pump is controlled avoiding the energy loss using valve regulated to cause, but such as
What reasonable acquiring heat supply system respectively controls the data of node and with above-mentioned data for parameter for frequency conversion system to be controlled, with
Realize the Based Intelligent Control of central heating system, become problem demanding prompt solution in prior art.
Summary of the invention
For solve the problems referred to above, it is an object of the invention to provide a kind of can be by the temperature of central heating network, pressure feelings
Condition, regulation in real time realizes high-quality heat supply and has the energy-saving control device for central heating heat exchange station of energy-conservation effect concurrently.
A kind of energy-saving control device for central heating heat exchange station possessing function of measuring of the present invention, described heat is handed over
Change station include a secondary net thermal source 300, secondary network user 400, water knockout drum 302, heat exchanger package 305, fluid level transmitter 307 and condense
Water tank 308, secondary net thermal source 300 outlet by series connection vortex-shedding meter 301 and primary side motor regulated valve 304 with change
The primary side water inlet of hot device group 305 is connected, and the primary side outlet pipe outlet of heat exchanger package 305 accesses condensate tank
308 water inlets, condensate tank outlet and secondary net thermal source 300 water return outlet are connected, using the pipe network of heat exchanger package primary side as
One secondary net, the pipe network of heat exchanger package secondary side is as secondary network, and described vortex-shedding meter is for detection one secondary net water supply flow；
The secondary side outlet of heat exchanger package 305 water inlet with secondary network user after water knockout drum 302 is connected, secondary
The water return outlet of network users is by circulating pump group 601 and heat exchanger package 305 secondary side water inlet；Described heat exchanger package includes at least
One heat exchanger；It is characterized in that described energy-saving control device includes: secondary water-supply temperature control modules 1, secondary are for backwater pressure reduction
Regulation control module 2, secondary backwater constant DP control module 3, heat exchange station centralized Control terminal 500 and sensor group；
Described secondary water-supply temperature control modules 1 includes the secondary net electric control valve 304 as execution unit and once
Net supply water temperature sensor 101, one secondary net pressure of supply water sensor 201, described primary side electric control valve 304 changes for control
The flow of inlet water of hot device group 305 primary side water inlet, described secondary net supply water temperature sensor 101, secondary net pressure of supply water passes
Sensor 201 is respectively used to detect secondary net supply water temperature and a pressure；
Described secondary includes circulating pump group 601 for backwater pressure reduction regulation control module 2 and connects and control circulating pump group
Circulating pump frequency-variable controller 600.
Described secondary backwater constant DP control module 3 includes refill flow meter 708, small pump group 701, water supply tank 707, moisturizing
Case liquid level sensor 706, moisturizing electromagnetic valve 704, moisturizing control valve 709, softening water treatment system 705, small pump VFC
Device 700, relief valve 703, the water return outlet of secondary network user is connected in parallel relief valve 703 and refill flow meter 708 outlet, moisturizing
Effusion meter 708 water inlet connects the outlet of small pump group 701, and small pump converter 700 connects and controls small pump group, moisturizing
The water inlet of pump group is connected with water supply tank 707 outlet, and water supply tank liquid level sensor 706 is installed in water supply tank, water supply tank
Water inlet by moisturizing electromagnetic valve 704 connect soften water treatment system 705 outlet conduit.Soften water treatment system 705
Inlet channel connects moisturizing water source by moisturizing control valve 709, and described refill flow meter is used for detecting refill flow, water supply tank liquid
Level sensor is used for detecting the liquid level of water supply tank,
Described sensor group include outdoor temperature sensor 303 and be positioned at water knockout drum outlet with secondary network user's water inlet it
Between secondary network supply water temperature sensor 106, the secondary network pressure of supply water sensor 202 being installed in water knockout drum, lay respectively at
The heat exchange temperature sensor 102 of heat exchanger package primary side and secondary side, is positioned at the heat exchange temperature sensor detection of primary side
In addition to export the primary side inlet temperature of the heat exchanger being joined directly together with a secondary net electric control valve 304, heat exchanger package owns
The primary side import and export temperature of heat exchanger, the heat exchange temperature sensor being positioned at secondary side detects into removing and circulating pump outlet
The secondary side outlet temperature of the heat exchanger of direct neighbor, secondary network water return outlet connect on pipeline and be positioned at circulating pump water inlet and
Connect position between pipeline at flowmeter outlet and there is secondary network return water temperature sensor 107 and secondary network pressure of return water sensing
Device 203；Described secondary network pressure of supply water sensor and secondary network supply water temperature sensor are respectively used to detect secondary network for hydraulic pressure
Power and temperature, secondary network return water temperature sensor and secondary network pressure of return water sensor demultiplexing in detection secondary network return water temperature and
Pressure；
Heat exchange station centralized Control terminal 500 and each sensor, vortex-shedding meter 301, refill flow meter in sensor group
708 connect and gather the temperature of its detection, pressure, flow, liquid level data；Heat exchange station centralized Control terminal 500 also with once
Net automatic regulating valve 304, moisturizing electromagnetic valve 704, relief valve 703, circulating pump frequency-variable controller, small pump frequency-variable controller are connected
Connect and send after the data gathered are analyzed instruction to control a secondary net automatic regulating valve 304, moisturizing electromagnetic valve 704, let out
The aperture of pressure valve 703 and circulating pump, small pump start and stop and rotating speed,
Described energy-saving control device regulates the aperture of a secondary net motor-operated control valve by secondary water-supply temperature control modules 1
Regulation secondary water-supply temperature, makes actual secondary water-supply temperature meet according to the outdoor temperature preset and secondary network supply water temperature relation
The secondary water-supply temperature that curve calculates.
Described energy-saving control device controls circulating pump group by secondary backwater constant DP control module 2, maintains secondary network to supply back
Differential water pressures is constant；
Described energy-saving control device regulates control module 3 by secondary for backwater pressure reduction, senses with secondary network pressure of return water
Device data are the opening and closing of the start and stop according to regulation and control small pump and relief valve, simultaneously opening with water supply tank Liquid level moisturizing electromagnetic valve
Close, jointly maintain secondary network constant for backwater pressure reduction with secondary backwater constant DP control module.
Described energy-saving control device, is characterized in that described heat exchange station centralized Control terminal 500 includes the special control of heat supply
Device 501 processed, power module 503, display touch screen 502, data acquisition port 504, Control port 505, GPRS communication
Module 506, auxiliary reclay 507, isolation module 508, water pump control port 509,
Power module is connected with heat supply nonshared control unit, and heat supply nonshared control unit also touches with GPRS communication module, display
Screen, data acquisition port, Control port and water pump control port and connect, and described data acquisition port is with isolation module even
Connect.
The display touch screen of described heat exchange station centralized Control terminal can show the detection data and needs collected
Regulation and the parameter of monitoring, and the parameter needing regulation can be inputted.
The data that described GPRS communication module produces with monitoring for data centralized Control terminal collected and regulation
Output,
Described heat exchange station centralized Control terminal 500 is by isolation module and each sensor, flux of vortex street in sensor group
Meter 301, refill flow meter 708, fluid level transmitter 307, water supply tank liquid level sensor 706, relief valve connect and with data acquisition
The temperature of the detection of port processing the said equipment, pressure, flow, liquid level data；
Described heat exchange station centralized Control terminal 500 is by auxiliary reclay and a secondary net electric control valve, moisturizing electromagnetism
Valve, relief valve connect and regulate the aperture of above-mentioned valve；
Described heat exchange station centralized Control terminal 500 controls port and small pump frequency-variable controller and circulating pump by water pump
Frequency-variable controller is connected and passes through controller noted above regulation small pump, the start and stop of circulating pump and rotating speed.
Described heat supply nonshared control unit is ACX32 controller.
The energy-saving control device for central heating heat exchange station possessing function of measuring that the present invention provides, has following
Beneficial effect
1) described control device includes secondary water-supply temperature control modules, and secondary regulates control module for backwater pressure reduction, logical
Cross above-mentioned two module and can realize the control of secondary water-supply temperature by controlling a water supply flow respectively, and by control
The rotating speed of secondary network circulating pump processed regulates secondary network confession backwater pressure reduction, it is achieved secondary network supply water temperature and confession backwater pressure reduction control
System, when meeting central heating, secondary network user is to hot water temperature and the requirement of pressure of supply water, it is achieved certain energy-saving effect.
2) described control device is also additionally arranged secondary backwater constant DP control module on the basis of traditional heat exchange station, by mending
Water pump controls from water supply tank to secondary returning water lines moisturizing, can automatically maintain secondary returning water pressure at zone of reasonableness, it is to avoid
In traditional central heating system, the secondary network water yield loses the various problems caused, and it also avoid the need caused not in time because of moisturizing
The energy resource consumption that circulating pump rotating speed to be greatly improved causes, under stable secondary net pressure of return water, can make system run more
Steadily, energy-saving effect can be improved further.
3) described control device have employed and controls terminal based on heat supply nonshared control unit central heating, it is possible to central heating
In system, the temperature of heat exchange station, flow, pressure, level condition carry out comprehensive Real-time Collection and monitoring, and can be according to above-mentioned
The metering of parameter realization heat, and circulating pump, small pump and a secondary net electric control valve, moisturizing electromagnetic valve, moisturizing are controlled
Valve is adjusted, and can be easy to being distributed in bigger by the output of above-mentioned data to remote monitoring center by GPRS communication module
Multiple heat exchange stations in region carry out concentrating monitoring in real time, and can for different periods every day and in the hot season different time
Phase is that controller sets different control program, further increases for fine to the control of heat exchange station of thermal control terminal
Change, automaticity, can realize energy-conservation on the premise of ensureing heating effect to greatest extent.
Accompanying drawing explanation
Fig. 1 controls the population structure cloth of device for the heat exchange station centralized heating and energy conservation that the specific embodiment of the invention provides
Office's schematic diagram；
Fig. 2 controls the heat exchange station collection of device for the heat exchange station centralized heating and energy conservation that the specific embodiment of the invention provides
The internal structure schematic diagram of middle control terminal；
In figure:
300, a secondary net thermal source, 400, secondary network user, 301, vortex-shedding meter, 302, water knockout drum, 305, heat exchanger package,
307, fluid level transmitter, 308, condensate tank, 303, outdoor temperature sensor, 106, secondary network supply water temperature sensor, 202,
Secondary network pressure of supply water sensor, 102, heat exchange temperature sensor, 107, secondary network return water temperature sensor, 203, secondary network
Pressure of return water sensor；
1, secondary water-supply temperature control modules, 304, one secondary net electric control valve, 101, one secondary net supply water temperature sensor,
201, a secondary net pressure of supply water sensor；
2, secondary regulates control module for backwater pressure reduction, and 601, circulating pump group, 600, circulating pump frequency-variable controller；
3, secondary backwater constant DP control module, 708, refill flow meter, 701, small pump group, 707, water supply tank, 706, mend
High water tank sensor, 704, moisturizing electromagnetic valve, 709, moisturizing control valve, 705, soften water treatment system, 700, small pump becomes
Frequently controller, 703, relief valve；
500, heat exchange station centralized Control terminal, 501, heat supply nonshared control unit, 503, power module, 502, display touches
Screen, 504, data acquisition port, 505, Control port, 506, GPRS communication module, 507, auxiliary reclay, 508, every
From module, 509, water pump control port.
Detailed description of the invention
In conjunction with Fig. 1-2, the present invention will be further described.
A kind of energy-saving control device for central heating heat exchange station possessing function of measuring, described heat exchange station includes
One secondary net thermal source 300, secondary network user 400, water knockout drum 302, heat exchanger package 305, fluid level transmitter 307 and condensate tank 308,
One secondary net thermal source 300 outlet is by the vortex-shedding meter 301 connected and primary side motor regulated valve 304 and heat exchanger package
The primary side water inlet of 305 is connected, and the primary side outlet pipe outlet of heat exchanger package 305 accesses condensate tank 308 and enters water
Mouthful, condensate tank outlet and secondary net thermal source 300 water return outlet are connected, using the pipe network of heat exchanger package primary side as a secondary net,
The pipe network of heat exchanger package secondary side is as secondary network, and described vortex-shedding meter is for detection one secondary net water supply flow；
The secondary side outlet of heat exchanger package 305 water inlet with secondary network user after water knockout drum 302 is connected, secondary
The water return outlet of network users is by circulating pump group 601 and heat exchanger package 305 secondary side water inlet；Described heat exchanger package includes at least
One heat exchanger；It is characterized in that described energy-saving control device includes: secondary water-supply temperature control modules 1, secondary are for backwater pressure reduction
Regulation control module 2, secondary backwater constant DP control module 3, heat exchange station centralized Control terminal 500 and sensor group；
Described secondary water-supply temperature control modules 1 includes the secondary net electric control valve 304 as execution unit and once
Net supply water temperature sensor 101, one secondary net pressure of supply water sensor 201, described primary side electric control valve 304 changes for control
The flow of inlet water of hot device group 305 primary side water inlet, described secondary net supply water temperature sensor 101, secondary net pressure of supply water passes
Sensor 201 is respectively used to detect a secondary net thermal source outlet and flows out temperature and pressure that is secondary net supply water temperature and the pressure of hot water
Power；
Described secondary includes described circulating pump group 601 for backwater pressure reduction regulation control module 2 and connects and control circulating pump
The circulating pump frequency-variable controller 600 of group.
Described secondary backwater constant DP control module 3 includes refill flow meter 708, small pump group 701, water supply tank 707, moisturizing
Case liquid level sensor 706, moisturizing electromagnetic valve 704, moisturizing control valve 709, softening water treatment system 705, small pump VFC
Device 700, relief valve 703, the water return outlet of secondary network user is connected in parallel relief valve 703 and refill flow meter 708 outlet, moisturizing
Effusion meter 708 water inlet connects the outlet of small pump group 701, and small pump converter 700 connects and controls small pump group, moisturizing
The water inlet of pump group is connected with water supply tank 707 outlet, and water supply tank liquid level sensor 706 is installed in water supply tank, water supply tank
Water inlet by moisturizing electromagnetic valve 704 connect soften water treatment system 705 outlet conduit.Soften water treatment system 705
Inlet channel connects moisturizing water source (i.e. tap water) by moisturizing control valve 709.
Described refill flow meter is used for detecting refill flow, and water supply tank liquid level sensor is used for detecting the liquid level of water supply tank,
Described sensor group include outdoor temperature sensor 303 and be positioned at water knockout drum outlet with secondary network user's water inlet it
Between secondary network supply water temperature sensor 106, the secondary network pressure of supply water sensor 202 being installed in water knockout drum, lay respectively at
The heat exchange temperature sensor 102 of heat exchanger package primary side and secondary side, is positioned at the heat exchange temperature sensor detection of primary side
In addition to export the primary side inlet temperature of the heat exchanger being joined directly together with a secondary net electric control valve 304, heat exchanger package owns
The primary side import and export temperature of heat exchanger, the heat exchange temperature sensor being positioned at secondary side detects into removing and circulating pump outlet
The secondary side outlet temperature of the heat exchanger of direct neighbor, secondary network water return outlet connect on pipeline and be positioned at circulating pump water inlet and
Connect position between pipeline at flowmeter outlet and there is secondary network return water temperature sensor 107 and secondary network pressure of return water sensing
Device 203；Described secondary network pressure of supply water sensor and secondary network supply water temperature sensor are respectively used to detect secondary network for hydraulic pressure
Power and temperature, secondary network return water temperature sensor and secondary network pressure of return water sensor demultiplexing in detection secondary network return water temperature and
Pressure；
Heat exchange station centralized Control terminal 500 and each sensor, vortex-shedding meter 301, refill flow meter in sensor group
708, fluid level transmitter 307 and water supply tank liquid level sensor 706 connect and gather the temperature of its detection, pressure, flow, liquid level number
According to；
Heat exchange station centralized Control terminal 500 also with a secondary net automatic regulating valve 304, moisturizing electromagnetic valve 704, relief valve,
Circulating pump frequency-variable controller, small pump frequency-variable controller are connected and send instruction control after being analyzed the data gathered
One secondary net automatic regulating valve 304, moisturizing electromagnetic valve 704, the aperture of relief valve 703 and circulating pump, small pump start and stop and rotating speed.
Described energy-saving control device regulates the aperture of a secondary net motor-operated control valve by secondary water-supply temperature control modules 1
Regulation secondary water-supply temperature, makes actual secondary water-supply temperature meet according to the outdoor temperature preset and secondary network supply water temperature relation
The secondary water-supply temperature that curve calculates.
Described heat exchange station centralized Control terminal 500 includes that heat supply nonshared control unit 501, power module 503, display touch
Screen 502, data acquisition port 504, Control port 505, GPRS communication module 506, auxiliary reclay 507, isolation mode
Block 508, water pump control port 509,
Power module is connected with heat supply nonshared control unit, and heat supply nonshared control unit also touches with GPRS communication module, display
Screen, data acquisition port, Control port and water pump control port and connect, and described data acquisition port is with isolation module even
Connect,
The display touch screen of described heat exchange station centralized Control terminal can show the temperature of collection, pressure, flow, liquid level
Data and needs regulate and the parameter of monitoring, and can input the parameter needing regulation.
The data that described GPRS communication module produces with monitoring for data centralized Control terminal collected and regulation
Export to remote monitoring center,
Described heat exchange station centralized Control terminal 500 is by isolation module and each sensor, flux of vortex street in sensor group
Meter 301, refill flow meter 708, fluid level transmitter 307, water supply tank liquid level sensor 706 connect and with data acquisition port processing
The temperature of the said equipment detection, pressure, flow, liquid level data；
Described heat exchange station centralized Control terminal 500 is by auxiliary reclay and a secondary net electric control valve, moisturizing electromagnetism
Valve, relief valve connect and regulate the aperture of above-mentioned valve,
Described heat exchange station centralized Control terminal 500 water pump controls port and controls port and small pump frequency conversion control by water pump
Device processed is connected with circulating pump frequency-variable controller and passes through controller noted above regulation small pump, the start and stop of circulating pump and rotating speed.
Described energy-saving control device controls circulating pump group by secondary backwater constant DP control module 2, maintains secondary network to supply back
Differential water pressures is constant；
Described energy-saving control device regulates control module 3 by secondary for backwater pressure reduction, senses with secondary network pressure of return water
Device data are the opening and closing of the start and stop according to regulation and control small pump and relief valve, simultaneously opening with water supply tank Liquid level moisturizing electromagnetic valve
Close, jointly maintain secondary network constant for backwater pressure reduction with secondary backwater constant DP control module.
Heat exchange station centralized heating and energy conservation control equipments overall structure layout carry out as it is shown in figure 1,
The internal structure schematic diagram of heat exchange station centralized Control terminal is as shown in Figure 2.
The described energy-saving control device control method when central heating comprises the following steps:
1, secondary network Water temperature control
The outdoor temperature recorded according to outdoor temperature sensor by centralized Control terminal and default outdoor temperature and secondary
Net supply water temperature relation curve (hereinafter referred to as setting curve) controls the aperture of primary side water supply electric control valve, is changed by regulation
The water supply flow of hot device primary side controls the secondary of heat exchanger and measures coolant-temperature gage, make that secondary network supply water temperature sensor detects two
Secondary net supply water temperature meets the setting of setting curve,
Default secondary network supply water temperature is supplied water as set-point, the secondary network of secondary network supply water temperature sensor detection
Temperature is as value of feedback, and the aperture of primary side water supply electric control valve, as output valve, uses pid algorithm, controls secondary network and supplies
Coolant-temperature gage constant.
Centralized Control terminal can the most automatically be modified state setting curve according to the plan set, i.e. every day, weekly
And the different time sections of every day all can set different setting curves and can realize the automatic switchover of setting curve, and work as room
When outer temperature rises to outdoor temperature correction value, secondary water-supply temperature can be automatically turned down.
Centralized Control terminal can also supply according to a secondary net water supply flow and a secondary net, return water temperature calculates defeated from a secondary net
The total amount of heat entered is to realize function of measuring, and it is total to limit a secondary net input by the aperture controlling primary side water supply electric control valve
Heat.
Described secondary network Water temperature control has six kinds of patterns:
(1) outdoor temperature reset: when outdoor temperature rises to outdoor temperature correction value, automatically turn down secondary water-supply temperature.
(2) secondary water-supply temperature curve (after the time period is revised): calculate setting of secondary water-supply temperature according to outdoor temperature
Definite value, is automatically adjusted valve aperture.
(3) time period compensation to secondary water-supply temperature curve: utilize people's different time sections to the requirement of temperature not
With, regulate temperature curve automatically according to setting value, reach to save the effect of heat expense.
(4) constant secondary water-supply temperature: according to the setting value of the outdoor temperature set and secondary water-supply temperature curve
Relation control valve makes secondary water-supply temperature close to its setting value.
(5) quadratic average temperature curve: calculate the setting value of quadratic average temperature, automatic regulating valve according to outdoor temperature
Door aperture.
(6) constant quadratic average temperature: according to the setting value of the outdoor temperature set and quadratic average temperature curve
Relation control valve makes quadratic average temperature close to its setting value.
2, secondary controls for backwater pressure reduction
By centralized Control terminal according to the secondary network set for backwater pressure differential resetting value deviation range, control secondary for backwater
The rotating speed of circulating pump in circulating pump group in pressure reduction control module, by secondary network for backwater pressure reduction actual value and the deviation of desired value
Maintain ± SMpa.
Use Traditional PID to realize the control of circulating pump, the minimum speed of the circulating pump set as the A% of rated speed,
Secondary maintains ± RMPa for the deviation of backwater pressure reduction actual value with desired value.
3, secondary backwater Isobarically Control
Set secondary returning water pressure control preset value and and be set lower than preset value the most successively according to preset value
Lower bound, lower bound and higher than the high limit of preset value, high limit；
When in secondary side water return pipeline, pressure is less than the secondary returning water pressure lower bound preset, centralized Control terminal control two
Small pump in secondary backwater constant DP control module startup with increase rotating speed, start moisturizing in secondary returning water lines, maintain
The constant pressure point pressure of water system is constant, and the control to small pump uses Traditional PID to realize.Force value is stablized in lower bound with high
Between limit.When small pump rotating speed is less than the B% of rated speed, and time delay t1After Miao, small pump shuts down, and when secondary side returns
When water pressure is less than lower bound, small pump re-starts operating.When secondary side pressure of return water is prescribed a time limit, through time delay t higher than high2Second
After, centralized Control terminal control electromagnetic valve open, when secondary side pressure of return water is let out to during less than lower bound, and relief valve cuts out.Let out
Control small pump when pressure valve is opened to shut down.
Embodiment 1
In the present embodiment
Heat exchanger package uses 4 heat exchangers, and after using every 2 heat exchangers series connection, mode in parallel again connects；
Circulating pump group includes three circulating pumps in parallel；
Small pump group includes 2 small pumps in parallel；
Described heat supply nonshared control unit model is ACX32
S=R=0.01, A=B=20, t1=10～60s, t2=10～60s.
Claims (4)
1. possessing the energy-saving control device for central heating heat exchange station of function of measuring, described heat exchange station includes a secondary net
Thermal source, secondary network user, water knockout drum, heat exchanger package, fluid level transmitter and condensate tank, a secondary net thermal source outlet is by series connection
Vortex-shedding meter be connected with the primary side water inlet of heat exchanger package with primary side motor regulated valve, heat exchanger package is once
Side outlet pipe outlet accesses condensate tank water inlet, condensate tank outlet and a secondary net thermal source water return outlet and is connected, to change
The pipe network of hot device group primary side is as a secondary net, and the pipe network of heat exchanger package secondary side is as secondary network, and described vortex-shedding meter is used
In detecting a secondary net water supply flow；
The secondary side outlet of heat exchanger package water inlet with secondary network user after water knockout drum is connected, and secondary network user returns
The mouth of a river is by circulating pump group and heat exchanger package secondary side water inlet；Described heat exchanger package includes at least one heat exchanger；It is special
Levy is that described energy-saving control device includes: secondary water-supply temperature control modules, secondary regulate control module, secondary for backwater pressure reduction
Backwater constant DP control module, heat exchange station centralized Control terminal and sensor group；
It is warm that described secondary water-supply temperature control modules includes that the secondary net electric control valve as execution unit and a secondary net supply water
Degree sensor, a secondary net pressure of supply water sensor, described primary side electric control valve is used for controlling the water inlet of heat exchanger package primary side
The flow of inlet water of mouth, a described secondary net supply water temperature sensor, a secondary net pressure of supply water sensor are respectively used to detect a secondary net
Supply water temperature and pressure；
Described secondary includes circulating pump group and connection for backwater pressure reduction regulation control module and controls the circulating pump change of circulating pump group
Frequently controller；
Described secondary backwater constant DP control module include refill flow meter, small pump group, water supply tank, water supply tank liquid level sensor,
Moisturizing electromagnetic valve, moisturizing control valve, softening water treatment system, small pump frequency-variable controller, relief valve, the backwater of secondary network user
Mouth is connected in parallel relief valve and refill flow meter outlet, and refill flow counts the mouth of a river and connects the outlet of small pump group, moisturizing
Pump frequency conversion device connects and controls small pump group, and the water inlet of small pump group is connected with water supply tank outlet, and water supply tank liquid level passes
Sensor is installed in water supply tank, and the water inlet of water supply tank connects the outlet conduit softening water treatment system by moisturizing electromagnetic valve；
The inlet channel softening water treatment system connects moisturizing water source by moisturizing control valve, and described refill flow meter is used for detecting moisturizing
Flow, water supply tank liquid level sensor is used for detecting the liquid level of water supply tank,
Described sensor group includes outdoor temperature sensor and exports two between secondary network user's water inlet at water knockout drum
Secondary net supply water temperature sensor, the secondary network pressure of supply water sensor being installed in water knockout drum, lay respectively at heat exchanger package once
The heat exchange temperature sensor of side and secondary side, the heat exchange temperature sensor detection being positioned at primary side removes and a secondary net electric adjustable
Beyond the primary side inlet temperature of heat exchanger that joint valve outlet port is joined directly together in heat exchanger package the primary side of all heat exchangers into and out of
Mouth temperature, the heat exchange temperature sensor being positioned at secondary side detects into except two with the heat exchanger of circulating pump outlet direct neighbor
Secondary side outlet temperature, connects on pipeline and is positioned at circulating pump water inlet at secondary network water return outlet and be positioned at flowmeter outlet connecting tube
Between road, position has secondary network return water temperature sensor and secondary network pressure of return water sensor；Described secondary network pressure of supply water passes
Sensor and secondary network supply water temperature sensor are respectively used to detect secondary network pressure of supply water and temperature, and secondary network return water temperature senses
Device and secondary network pressure of return water sensor demultiplexing are in detection secondary network return water temperature and pressure；
Heat exchange station centralized Control terminal is connected with each sensor, vortex-shedding meter, refill flow meter in sensor group and gathers
The temperature of its detection, pressure, flow, liquid level data；Heat exchange station centralized Control terminal also with a secondary net automatic regulating valve, moisturizing
Electromagnetic valve, relief valve, circulating pump frequency-variable controller, small pump frequency-variable controller are connected and are being analyzed the data gathered
After send instruction and control a secondary net automatic regulating valve, moisturizing electromagnetic valve, the aperture of relief valve and circulating pump, small pump start and stop and turn
Speed,
The aperture that described energy-saving control device regulates a secondary net motor-operated control valve by secondary water-supply temperature control modules regulates
Secondary water-supply temperature, makes actual secondary water-supply temperature meet according to the outdoor temperature preset and secondary network supply water temperature relation curve
The secondary water-supply temperature calculated；
Described energy-saving control device controls circulating pump group by secondary backwater constant DP control module, maintains secondary network for backwater pressure reduction
Constant；
Described energy-saving control device regulates control module by secondary for backwater pressure reduction, with secondary network pressure of return water sensing data
The start and stop of small pump and the opening and closing of relief valve is regulated and controled for foundation, simultaneously with the opening and closing of water supply tank Liquid level moisturizing electromagnetic valve, with
Secondary backwater constant DP control module maintains secondary network constant for backwater pressure reduction jointly.
2. energy-saving control device as claimed in claim 1, is characterized in that described heat exchange station centralized Control terminal includes heat supply
Nonshared control unit, power module, display touch screen, data acquisition port, Control port, GPRS communication module, centre
Relay, isolation module, water pump control port,
Power module is connected with heat supply nonshared control unit, heat supply nonshared control unit also with GPRS communication module, display touch screen, number
Controlling port connection according to gathering port, Control port and water pump, described data acquisition port is connected with isolation module.
3. energy-saving control device as claimed in claim 1, is characterized in that the display of described heat exchange station centralized Control terminal is touched
Touch screen and can show the detection data collected and needs regulation and the parameter of monitoring, and the ginseng needing regulation can be inputted
Number,
The data output that described GPRS communication module produces with monitoring for data centralized Control terminal collected and regulation,
Described heat exchange station centralized Control terminal is by isolation module and each sensor, vortex-shedding meter, moisturizing in sensor group
Effusion meter, fluid level transmitter, water supply tank liquid level sensor, relief valve connect and with the inspection of data acquisition port processing the said equipment
The temperature of survey, pressure, flow, liquid level data,
Described heat exchange station centralized Control terminal passes through auxiliary reclay and a secondary net electric control valve, moisturizing electromagnetic valve, pressure release
Valve connects and regulates the aperture of above-mentioned valve；
Described heat exchange station centralized Control terminal controls port and small pump frequency-variable controller and circulating pump frequency conversion control by water pump
Device processed is connected and passes through controller noted above regulation small pump, the start and stop of circulating pump and rotating speed.
4. energy-saving control device as claimed in claim 2 or claim 3, is characterized in that described heat supply nonshared control unit is ACX32 control
Device.
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|---|---|---|---|
| CN201610538249.7A CN106123107A (en) | 2016-07-08 | 2016-07-08 | Possesses the energy-saving control device for central heating heat exchange station of function of measuring |
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| CN201610538249.7A CN106123107A (en) | 2016-07-08 | 2016-07-08 | Possesses the energy-saving control device for central heating heat exchange station of function of measuring |
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| CN107726581A (en) * | 2017-11-09 | 2018-02-23 | 华南理工大学建筑设计研究院 | A kind of subscriber access system for regional cooling and heating system |
| CN109631150A (en) * | 2018-12-19 | 2019-04-16 | 天津宏达瑞信科技有限公司 | A kind of accurate heat supply method of temperature based on secondary network, pressure and user's room temperature |
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| WO2021147611A1 (en) * | 2020-01-20 | 2021-07-29 | 东北大学 | Park comprehensive energy optimization control method |
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Application publication date: 20161116 |