CN109405059A - The energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference and regulation method - Google Patents
The energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference and regulation method Download PDFInfo
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- CN109405059A CN109405059A CN201811353491.2A CN201811353491A CN109405059A CN 109405059 A CN109405059 A CN 109405059A CN 201811353491 A CN201811353491 A CN 201811353491A CN 109405059 A CN109405059 A CN 109405059A
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- primary side
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- control valve
- frequency converter
- electric control
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Flow Control (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of energy saving regulator control systems of pipe network dynamic load intelligent pressure regulating difference, including electric control valve K1, pump discharge electrically operated valve K2, primary side pipeline pump W, the bypass electric valve K3, primary side flowmeter being arranged in side ducts of heat exchanger, the secondary water-supply temperature thermal resistance PT in the secondary side ducts of heat exchanger is set；It further include controller and frequency converter；The beneficial effect of energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference is: can be realized the long-range self-adapting intelligent regulator control system to heating system, according to live operating condition, long-distance intelligent switching is carried out to valve group, automatic start-stop operation is carried out to pipeline pump simultaneously, changed using frequency converter and an electric control valve with operating condition, real-time intelligent adjustment cooperation, makes pipeline pump operation rationally control flow of thermal substation, to guarantee that thermal substation is safe and stable, energy-saving operation.
Description
Technical field
The present invention relates to heat supply process field, in particular to a kind of pipe network dynamic load intelligent pressure regulating difference energy conservation regulation
System and regulation method.
Background technique
By power plant's critical point pressure fluctuations, often there is the unfavorable operating condition of pressure difference in some thermal substations, need artificial
Pipeline pump of frequent start-stop；Because thermal substation apart from control centre farther out, operation need the long period, easily cause thermal substation heat use
Family is for thermally labile.
Summary of the invention
The object of the present invention is to provide a kind of energy saving regulator control systems of pipe network dynamic load intelligent pressure regulating difference.
For this purpose, technical solution of the present invention is as follows:
A kind of energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference, including be arranged in side ducts of heat exchanger
On electric control valve K1, pump discharge electrically operated valve K2, primary side pipeline pump W, bypass electric valve K3, primary side flowmeter,
Secondary water-supply temperature thermal resistance PT in the secondary side ducts of heat exchanger is set；It further include controller and frequency converter；
The primary side flowmeter is arranged on the water return pipeline of heat exchanger；The primary side pipeline pump W, pump discharge
Electrically operated valve K2 and electric control valve K1 is successively set on the outlet conduit far from heat exchanger；Heat exchanger and electric control valve K1
Between be provided with bypass duct, bypass electric valve K3 is provided on bypass duct；
Secondary water-supply temperature thermal resistance PT is arranged on the outlet conduit of heat exchanger secondary side；
It is the electric control valve K1, pump discharge electrically operated valve K2, bypass electric valve K3, primary side flowmeter, secondary
Supply water temperature thermal resistance PT, frequency converter are all connected to controller；
The frequency converter is connected to primary side pipeline pump W, for controlling the revolving speed of primary side pipeline pump W.
Further, the controller is PLC.
Further, the start stop mode of the energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference is automatic starting
With manual start and stop two ways.
A kind of energy saving regulation method of pipe network dynamic load intelligent pressure regulating difference, which comprises the steps of:
1) control centre remotely issues heat exchange station primary side flow setting value and secondary water-supply temperature PT setting value to scene
Controller, electric control valve K1 is given according to controller, adjusts electric control valve K1 aperture；
2) judge heat exchange station primary side flowmeter and secondary water-supply temperature thermal resistance PT feed back to controller data whether
Reach setting value, if judging result is "Yes", return step 2)；If judging result is "No", electric control valve K1 is controlled
It is gradually opened, judges whether the aperture of electric control valve K1 reaches maximum value in the process, if judging result is "No", weigh
Multiple step 2), otherwise, into next step；
3) delay a period of time, judge that heat exchange station primary side flowmeter and secondary water-supply temperature thermal resistance PT feed back to control
Whether the data of device reach setting value, if judging result is "Yes", return step 2), if judging result is "No", enter
In next step；
4) electric control valve K1 keeps maximum opening constant, closes bypass electric valve K3, is started by frequency converter primary
Side ducts pump M, and judge whether the frequency of frequency converter reaches 30Hz, if judging result is "No", controller continues to adjust frequency conversion
Otherwise the frequency of device opens pump discharge electrically operated valve K2, and enter in next step；
5) controller continues to adjust the frequency of frequency converter to 35Hz, by heat stations primary side flowmeter and secondary water-supply temperature heat
The data that resistance PT feeds back to controller are compared with setting value, if being equal to setting value, side ducts of Frequency Converter Control
It pumps M and keeps existing frequency operation；If be lower than setting value, frequency converter raising frequency operation, until secondary water-supply temperature thermal resistance PT or
Primary side flowmeter value of feedback is equal to setting value；If being higher than setting value, then frequency converter keeps 35Hz operation, and controller is controlled
Object switches to electric control valve K1 from frequency converter, gradually turns down electric control valve K1 aperture, until secondary water-supply temperature thermoelectricity
It hinders PT or primary side flowmeter value of feedback is equal to setting value, electric control valve K1 keeps the constant operation of aperture.
Further, when the aperture of the electric control valve K1 is lower than a certain setting value, it is electronic that pump discharge is automatically closed
Valve K2, then Frequency Converter Control primary side pipeline pump M termination of pumping, while bypass electric valve K3 is opened, controller passes through control
Electric control valve K1 adjusts aperture, the value of feedback of secondary water-supply temperature thermal resistance PT or primary side flowmeter is made to reach secondary confession
Coolant-temperature gage or primary side flow setting value.
Compared with prior art, the energy saving regulator control system of a pipe network dynamic load intelligent pressure regulating difference and tune which provides
The beneficial effect of prosecutor method is: can be realized the long-range self-adapting intelligent regulator control system to heating system, runs work according to scene
Condition carries out long-distance intelligent switching to valve group, while carrying out automatic start-stop operation to pipeline pump, utilizes frequency converter and primary electronic
Regulating valve changes with operating condition, and real-time intelligent adjustment cooperation makes pipeline pump operation rationally control flow of thermal substation, thus
Guarantee that thermal substation is safe and stable, energy-saving operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference provided by the invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair
It is bright to have any restrictions.
The energy saving regulator control system of a kind of pipe network dynamic load intelligent pressure regulating difference, as shown in Figure 1, including being arranged in heat exchanger
It is electric control valve K1, pump discharge electrically operated valve K2, primary side pipeline pump W, bypass electric valve K3 in side ducts, primary
The secondary water-supply temperature thermal resistance PT in the secondary side ducts of heat exchanger is arranged in effluent meter；It further include controller and frequency converter,
The controller is PLC；
The primary side flowmeter is arranged on the water return pipeline of heat exchanger；The primary side pipeline pump W, pump discharge
Electrically operated valve K2 and electric control valve K1 is successively set on the outlet conduit far from heat exchanger；Heat exchanger and electric control valve K1
Between be provided with bypass duct, bypass electric valve K3 is provided on bypass duct；
Secondary water-supply temperature thermal resistance PT is arranged on the outlet conduit of heat exchanger secondary side；
It is the electric control valve K1, pump discharge electrically operated valve K2, bypass electric valve K3, primary side flowmeter, secondary
Supply water temperature thermal resistance PT, frequency converter are all connected to controller；
The frequency converter is connected to primary side pipeline pump W, for controlling the revolving speed of primary side pipeline pump W.
A kind of energy saving regulation method of pipe network dynamic load intelligent pressure regulating difference, includes the following steps:
1) control centre remotely issues heat exchange station primary side flow setting value and secondary water-supply temperature PT setting value to scene
Controller, electric control valve K1 is given according to controller, adjusts electric control valve K1 aperture；
2) judge heat exchange station primary side flowmeter and secondary water-supply temperature thermal resistance PT feed back to controller data whether
Reach setting value, if judging result is "Yes", return step 2)；If judging result is "No", electric control valve K1 is controlled
It is gradually opened, judges whether the aperture of electric control valve K1 reaches maximum value in the process, if judging result is "No", weigh
Multiple step 2), otherwise, into next step；
3) delay a period of time, judge that heat exchange station primary side flowmeter and secondary water-supply temperature thermal resistance PT feed back to control
Whether the data of device reach setting value, if judging result is "Yes", return step 2), if judging result is "No", enter
In next step；
4) electric control valve K1 keeps maximum opening constant, closes bypass electric valve K3, is started by frequency converter primary
Side ducts pump M, and judge whether the frequency of frequency converter reaches 30Hz, if judging result is "No", controller continues to adjust frequency conversion
Otherwise the frequency of device opens pump discharge electrically operated valve K2, and enter in next step；
5) controller continues to adjust the frequency of frequency converter to 35Hz, by heat stations primary side flowmeter and secondary water-supply temperature heat
The data that resistance PT feeds back to controller are compared with setting value, if being equal to setting value, side ducts of Frequency Converter Control
It pumps M and keeps existing frequency operation；If be lower than setting value, frequency converter raising frequency operation, until secondary water-supply temperature thermal resistance PT or
Primary side flowmeter value of feedback is equal to setting value；If being higher than setting value, then frequency converter keeps 35Hz operation, and controller is controlled
Object switches to electric control valve K1 from frequency converter, gradually turns down electric control valve K1 aperture, until secondary water-supply temperature thermoelectricity
It hinders PT or primary side flowmeter value of feedback is equal to setting value, electric control valve K1 keeps the constant operation of aperture.
When the aperture of the electric control valve K1 is lower than a certain setting value, pump discharge electrically operated valve K2 is automatically closed, so
Frequency Converter Control primary side pipeline pump M termination of pumping afterwards, while bypass electric valve K3 is opened, controller passes through control electric control valve
K1 adjusts aperture, the value of feedback of secondary water-supply temperature thermal resistance PT or primary side flowmeter is made to reach secondary water-supply temperature or one
Secondary side flow setting value.
Embodiment 1:
For heat exchange station before operation, control centre remotely issues heat exchange station secondary water-supply desired temperature to field controller,
Electric control valve K1 is given according to controller, adjusts electric control valve K1 aperture, it is therefore an objective to make secondary water-supply temperature thermal resistance PT
Or primary side flowmeter value of feedback reaches the secondary water-supply temperature or primary side flow setting value that controller receives.
The secondary water-supply temperature that controller receives is not achieved in secondary water-supply temperature thermal resistance PT or primary side flowmeter value of feedback
Degree or when primary side flow setting value, electric control valve K1 is gradually opened, when electric control valve K1 aperture is to maximum value, such as
Aperture 98% continues 10 minutes, secondary when still reaching to for temperature less than temperature value is issued, and prepares starting primary side pipeline pump W.At this time
Electric control valve K1 keeps maximum opening constant, closes bypass electric valve K3, meanwhile, a side ducts are started by frequency converter
W is pumped, when frequency converter frequency reaches 30Hz, pump discharge electrically operated valve K2 is opened, at this point, control object is set as becoming by controller
Frequency device.Frequency converter sets minimum running frequency as 35Hz, when 35Hz is run, such as heat exchange station secondary water-supply temperature thermal resistance PT at this time
Or primary side flowmeter value of feedback meets the secondary water-supply temperature or primary side flow setting value that controller receives, then frequency converter control
Primary side pipeline pump W processed keeps existing frequency operation；Such as heat exchange station secondary water-supply temperature thermal resistance PT or primary side flow at this time
Meter value of feedback is still below the secondary water-supply temperature or primary side flow setting value that controller receives, then frequency converter raising frequency is run, directly
Meet the secondary water-supply desired temperature that controller receives to secondary water-supply temperature thermal resistance PT or primary side flowmeter value of feedback,
Then Frequency Converter Control pipeline pump keeps the frequency to run；Such as heat exchange station secondary water-supply temperature thermal resistance PT or primary side flow at this time
Meter value of feedback is higher than the secondary water-supply temperature or primary side flow setting value that controller receives, then frequency converter keeps 35Hz operation,
Controller control object is switched into electric control valve K1 from pipeline pump frequency converter, gradually turns down electric control valve K1 aperture, until
Secondary water-supply temperature thermal resistance PT or primary side flowmeter value of feedback meet the secondary water-supply temperature or primary side that controller receives
Flow setting value, electric control valve K1 keep aperture constant.
It is more than 30 minutes when electric control valve K1 aperture is lower than some opening value, such as aperture is less than or equal to 30%, then it is quasi-
It is standby to close primary side pipeline pump W.Pump discharge electrically operated valve K2 is automatically closed first, then Frequency Converter Control primary side pipeline pump W
Termination of pumping, meanwhile, bypass electric valve K3 is opened, controller adjusts aperture, make secondary water-supply temperature by control electric control valve K1
Degree thermal resistance PT or primary side flowmeter value of feedback reach the secondary water-supply temperature or primary side flow setting value that controller receives.
Wherein, judge value a little, be designed as live to set, field adjustable sets optimum value by actual motion.
System can automatic running can also be by remotely or on the spot manually controlling start and stop in the manner described above.
Claims (5)
1. a kind of energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference, which is characterized in that including being arranged in heat exchanger
It is electric control valve K1, pump discharge electrically operated valve K2, primary side pipeline pump W, bypass electric valve K3 in side ducts, primary
The secondary water-supply temperature thermal resistance PT in the secondary side ducts of heat exchanger is arranged in effluent meter；It further include controller and frequency converter；
The primary side flowmeter is arranged on the water return pipeline of heat exchanger；The primary side pipeline pump W, pump discharge are electronic
Valve K2 and electric control valve K1 is successively set on the outlet conduit far from heat exchanger；Between heat exchanger and electric control valve K1
It is provided with bypass duct, bypass electric valve K3 is provided on bypass duct；
Secondary water-supply temperature thermal resistance PT is arranged on the outlet conduit of heat exchanger secondary side；
The electric control valve K1, pump discharge electrically operated valve K2, bypass electric valve K3, primary side flowmeter, secondary water-supply
Temperature thermal resistance PT, frequency converter are all connected to controller；
The frequency converter is connected to primary side pipeline pump W, for controlling the revolving speed of primary side pipeline pump W.
2. the energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference according to claim 1, which is characterized in that institute
The controller stated is PLC.
3. the energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference according to claim 2, which is characterized in that should
The start stop mode of energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference is automatic starting and manual start and stop two ways.
4. a kind of regulation side based on the energy saving regulator control system of pipe network dynamic load intelligent pressure regulating difference described in claim 1
Method, which comprises the steps of:
1) control centre remotely issues heat exchange station primary side flow setting value and secondary water-supply temperature PT setting value to field control
Device, electric control valve K1 is given according to controller, adjusts electric control valve K1 aperture；
2) judge that heat exchange station primary side flowmeter and secondary water-supply temperature thermal resistance PT feed back to the data of controller and whether reach
Setting value, if judging result is "Yes", return step 2)；If judging result is "No", electric control valve K1 is controlled gradually
It opens, judges whether the aperture of electric control valve K1 reaches maximum value in the process, if judging result is "No", repeat to walk
It is rapid 2), otherwise, into next step；
3) delay a period of time, judge that heat exchange station primary side flowmeter and secondary water-supply temperature thermal resistance PT feed back to controller
Whether data reach setting value, if judging result is "Yes", return step 2), if judging result is "No", enter next
Step；
4) electric control valve K1 keeps maximum opening constant, closes bypass electric valve K3, starts a side pipe by frequency converter
Road pumps M, and judges whether the frequency of frequency converter reaches 30Hz, if judging result is "No", controller continues to adjust frequency converter
Otherwise frequency opens pump discharge electrically operated valve K2, and enter in next step；
5) controller continues to adjust the frequency of frequency converter to 35Hz, by heat stations primary side flowmeter and secondary water-supply temperature thermal resistance
The data that PT feeds back to controller are compared with setting value, if being equal to setting value, Frequency Converter Control primary side pipeline pump M is protected
Hold existing frequency operation；If being lower than setting value, frequency converter raising frequency operation, until secondary water-supply temperature thermal resistance PT or primary side
Flowmeter value of feedback is equal to setting value；If be higher than setting value, then frequency converter keep 35Hz operation, by controller control object from
Frequency converter switches to electric control valve K1, gradually turns down electric control valve K1 aperture, until secondary water-supply temperature thermal resistance PT or
Primary side flowmeter value of feedback is equal to setting value, and electric control valve K1 keeps the constant operation of aperture.
5. the energy-efficient regulation method of pipe network dynamic load intelligent pressure regulating difference according to claim 4, which is characterized in that
When the aperture of the electric control valve K1 is lower than a certain setting value, pump discharge electrically operated valve K2 is automatically closed, then frequency converter
The M termination of pumping of primary side pipeline pump is controlled, while opening bypass electric valve K3, controller passes through control electric control valve K1, adjustment
Aperture makes the value of feedback of secondary water-supply temperature thermal resistance PT or primary side flowmeter reach secondary water-supply temperature or primary side flow
Setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353491.2A CN109405059B (en) | 2018-11-14 | 2018-11-14 | Primary pipe network dynamic load intelligent pressure difference regulating and energy saving regulating and controlling system and regulating and controlling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353491.2A CN109405059B (en) | 2018-11-14 | 2018-11-14 | Primary pipe network dynamic load intelligent pressure difference regulating and energy saving regulating and controlling system and regulating and controlling method |
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| CN109405059A true CN109405059A (en) | 2019-03-01 |
| CN109405059B CN109405059B (en) | 2023-12-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111021472A (en) * | 2019-12-06 | 2020-04-17 | 湖南华振供水设备有限公司 | Energy-saving method of secondary water supply system |
| CN115031287A (en) * | 2022-06-01 | 2022-09-09 | 国能宁夏供热有限公司 | Method and device for predicting double-valve switching of heating power station, control equipment and storage medium |
| CN116045361A (en) * | 2023-02-20 | 2023-05-02 | 胡赫（青岛）换热水箱有限公司 | A temperature control method for a centrally supplied fast water heater |
| CN116241935A (en) * | 2023-03-15 | 2023-06-09 | 西安德威换热设备有限公司 | Distributed Frequency Converter and Its Application Based on Electric Regulating Integrated Dynamic Balance Valve |
| CN117760126A (en) * | 2024-02-22 | 2024-03-26 | 天津市热电有限公司 | Anti-freezing control method and system for heat pump system |
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| CN117760126B (en) * | 2024-02-22 | 2024-04-30 | 天津市热电有限公司 | Anti-freezing control method and system for heat pump system |
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| Publication number | Publication date |
|---|---|
| CN109405059B (en) | 2023-12-19 |
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