CN111878889A - Heat exchange station system capable of reducing fluctuation of flow of heat supply main pipe network - Google Patents
Heat exchange station system capable of reducing fluctuation of flow of heat supply main pipe network Download PDFInfo
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- CN111878889A CN111878889A CN202010858287.7A CN202010858287A CN111878889A CN 111878889 A CN111878889 A CN 111878889A CN 202010858287 A CN202010858287 A CN 202010858287A CN 111878889 A CN111878889 A CN 111878889A
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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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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a heat exchange station system capable of reducing flow fluctuation of a heat supply main pipe network, wherein a primary network water supply pipeline is divided into two paths after passing through a main electric regulating valve, one path is connected with a heat release side inlet of a plate type heat exchanger, and a heat release side outlet of the plate type heat exchanger is communicated with a low-temperature water return pipeline through a flow divider; the other path is communicated with one end of a bypass electric regulating valve through a water supply and return bypass communicating pipe, and the other end of the bypass electric regulating valve is communicated with a low-temperature water return pipeline through a pipeline and a pipe and then communicated with a primary network water return pipeline through a total flowmeter; the secondary network water return pipeline is communicated with a heat absorption side inlet of the plate type heat exchanger through a secondary network circulating water pump, a heat absorption side outlet of the plate type heat exchanger is communicated with a secondary network water supply pipeline, and the system can effectively guarantee the safety of the generator set.
Description
Technical Field
The invention belongs to the field of municipal heating, and relates to a heat exchange station system capable of reducing flow fluctuation of a heat supply main pipe network.
Background
With the continuous development of automation control technology, municipal heating tends to be developed in a more energy-saving refined and intelligent manner according to the required heat, which requires that a heating system is adjusted in real time according to the temperature change of the environmental weather. According to the existing process flow of the existing heat exchange station, the heat supply adjusting mode is to change the opening degree of a valve of a first-level grid electric valve to realize the temperature change of secondary water supply. For a large-scale pipe network heat supply system, the frequent change of the valve openness leads to the fluctuation of the flow of a main heat supply pipe network, and causes the frequent change of the pipe network pressure, thereby bringing hidden troubles to the stable operation at the heat source side. Especially for a heating system of cogeneration, because the circulating water flow of a heat supply network changes frequently, large disturbance can be brought to the stable operation of a heat supply initial station, and the safety of a generator set is further influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a heat exchange station system capable of reducing the flow fluctuation of a heat supply main pipe network, and the system can effectively ensure the safety of a generator set.
In order to achieve the aim, the heat exchange station system capable of reducing the total flow fluctuation of the heat supply pipe network comprises a primary network water supply pipeline, a low-temperature water return pipeline, a primary network water return pipeline, a water supply and return bypass communicating pipe, a total electric regulating valve, a bypass electric regulating valve, a total flow meter, a branch flow meter, a plate type heat exchanger, a secondary network water supply pipeline, a secondary network water return pipeline and a secondary network circulating water pump;
the primary network water supply pipeline is divided into two paths after passing through the main electric regulating valve, wherein one path is connected with a heat release side inlet of the plate heat exchanger, and a heat release side outlet of the plate heat exchanger is communicated with the low-temperature water return pipeline through a flow divider; the other path is communicated with one end of a bypass electric regulating valve through a water supply and return bypass communicating pipe, and the other end of the bypass electric regulating valve is communicated with a low-temperature water return pipeline through a pipeline and a pipe and then communicated with a primary network water return pipeline through a total flowmeter; the secondary net water return pipeline is communicated with a heat absorption side inlet of the plate type heat exchanger through a secondary net circulating water pump, and a heat absorption side outlet of the plate type heat exchanger is communicated with a secondary net water supply pipeline.
The secondary net water return pipeline is communicated with a water supplementing pipeline.
And a filter is arranged at the inlet of the main electric regulating valve.
Temperature sensors and pressure sensors are arranged on the secondary network water supply pipeline, the secondary network water return pipeline, the primary network water return pipeline, the heat release side inlet of the plate heat exchanger and the heat release side outlet of the plate heat exchanger.
The system also comprises a controller, wherein the input end of the controller is connected with the output end of the main flow meter and the output end of the temperature sensor on the water supply pipeline of the secondary network, and the output end of the controller is connected with the control end of the main electric regulating valve and the control end of the bypass electric regulating valve.
The invention has the following beneficial effects:
when the heat exchange station system capable of reducing the flow fluctuation of the heat supply main pipe network is in specific operation, during heat supply, the flow of the working medium flowing through the heat discharge side of the plate heat exchanger is controlled by changing the opening of the bypass electric regulating valve according to the change of the environmental temperature, so that the purpose of regulating the water supply temperature of the secondary network in real time is realized under the condition of keeping the total flow of the primary network unchanged, the heat supply according to needs and the energy-saving operation are realized, the disturbance brought to the stable operation of the heat supply system by the large fluctuation of the total flow of the heat supply pipe network caused by the synchronous regulation of all the heat exchange stations is reduced, particularly the disturbance brought to the stable operation of the heat supply system of the cogeneration, and the.
Drawings
FIG. 1 is a schematic process flow diagram of the invention;
fig. 2 is a schematic diagram of the adjustment of the present invention.
Wherein, 1 is the filter, 2 is total electrical control valve, 3 is bypass electrical control valve, 4 is total flowmeter, 5 is the branch flowmeter, 6 is plate heat exchanger, 7 is two grade net circulating water pump.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the heat exchange station system capable of reducing total flow fluctuation of a heat supply pipe network comprises a primary network water supply pipeline, a low-temperature water return pipeline, a primary network water return pipeline, a water supply and return bypass communicating pipe, a total electric regulating valve 2, a bypass electric regulating valve 3, a total flow meter 4, a branch flow meter 5, a plate heat exchanger 6, a secondary network water supply pipeline, a secondary network water return pipeline and a secondary network circulating water pump 7; the primary network water supply pipeline is divided into two paths after passing through the main electric regulating valve 2, wherein one path is connected with a heat release side inlet of the plate heat exchanger 6, and a heat release side outlet of the plate heat exchanger 6 is communicated with a low-temperature water return pipeline through a flow divider 5; the other path is communicated with one end of a bypass electric regulating valve 3 through a water supply and return bypass communicating pipe, and the other end of the bypass electric regulating valve 3 is communicated with a low-temperature water return pipeline through a pipeline and a pipe and then communicated with a primary network water return pipeline through a total flowmeter 4; the secondary network water return pipeline is communicated with a heat absorption side inlet of the plate type heat exchanger 6 through a secondary network circulating water pump 7, and a heat absorption side outlet of the plate type heat exchanger 6 is communicated with a secondary network water supply pipeline.
In addition, second grade net return water pipe intercommunication has water supply pipeline, and the entrance of total electrical control valve 2 is provided with filter 1, and last, the heat release side entry department of plate heat exchanger 6 of first order net return water pipe, second grade net water supply pipe and the heat release side exit department of plate heat exchanger 6 all are provided with temperature sensor and pressure sensor.
The invention also comprises a controller, wherein the input end of the controller is connected with the output end of the total flowmeter 4 and the output end of the temperature sensor on the water supply pipeline of the secondary network, and the output end of the controller is connected with the control end of the total electric regulating valve 2 and the control end of the bypass electric regulating valve 3.
According to the invention, the total flow of the working medium in the primary network water supply pipeline is adjusted by adjusting the opening of the main electric adjusting valve 2, the flow of the working medium entering the heat release side of the plate heat exchanger 6 is adjusted by adjusting the opening of the bypass electric adjusting valve 3, and then the temperature of water in the secondary network water supply pipeline is adjusted.
When specifically adjusting, earlier close bypass electrical control valve 3, adjust total electrical control valve 2 again, make the total flow of water in the one-level net water supply pipe reach the setting value, wherein, detect the total flow of water in the one-level net water supply pipe through total flowmeter 4, when external environment temperature changes, then through adjusting bypass electrical control valve 3's aperture, in order to adjust the flow that enters into 6 heat release side medium working mediums of plate heat exchanger, then adjust the temperature of water in the second grade net water supply pipe, in accommodation process, can adopt PID's regulation mode to adjust, refer to fig. 2.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A heat exchange station system capable of reducing total flow fluctuation of a heat supply pipe network is characterized by comprising a primary network water supply pipeline, a low-temperature water return pipeline, a primary network water return pipeline, a water supply and return bypass communicating pipe, a total electric regulating valve (2), a bypass electric regulating valve (3), a total flow meter (4), a flow divider (5), a plate heat exchanger (6), a secondary network water supply pipeline, a secondary network water return pipeline and a secondary network circulating water pump (7);
the primary network water supply pipeline is divided into two paths after passing through the main electric regulating valve (2), wherein one path is connected with a heat release side inlet of the plate heat exchanger (6), and a heat release side outlet of the plate heat exchanger (6) is communicated with a low-temperature water return pipeline through a flow divider (5); the other path is communicated with one end of a bypass electric regulating valve (3) through a water supply and return bypass communicating pipe, and the other end of the bypass electric regulating valve (3) is communicated with a primary network water return pipeline through a main flow meter (4) after being connected with a low-temperature water return pipeline through a pipeline; the secondary network water return pipeline is communicated with a heat absorption side inlet of the plate type heat exchanger (6) through a secondary network circulating water pump (7), and a heat absorption side outlet of the plate type heat exchanger (6) is communicated with a secondary network water supply pipeline.
2. The heat exchange station system capable of reducing total flow fluctuation of a heat supply pipe network according to claim 1, wherein the secondary network water return pipeline is communicated with a water supply pipeline.
3. The heat exchange station system capable of reducing the flow fluctuation of a heat supply main pipe network according to claim 1, wherein a filter (1) is arranged at the inlet of the total electric control valve (2).
4. The heat exchange station system capable of reducing the flow fluctuation of a heat supply main pipe network according to claim 1, wherein a temperature sensor and a pressure sensor are arranged on a water supply pipeline of the secondary network, a water return pipeline of the primary network, a heat release side inlet of the plate heat exchanger (6) and a heat release side outlet of the plate heat exchanger (6).
5. The heat exchange station system capable of reducing the flow fluctuation of a heat supply main pipe network according to claim 4, further comprising a controller, wherein an input end of the controller is connected with an output end of the main flow meter (4) and an output end of a temperature sensor on a water supply pipeline of the secondary network, and an output end of the controller is connected with a control end of the main electric control valve (2) and a control end of the bypass electric control valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010858287.7A CN111878889A (en) | 2020-08-24 | 2020-08-24 | Heat exchange station system capable of reducing fluctuation of flow of heat supply main pipe network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010858287.7A CN111878889A (en) | 2020-08-24 | 2020-08-24 | Heat exchange station system capable of reducing fluctuation of flow of heat supply main pipe network |
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| CN111878889A true CN111878889A (en) | 2020-11-03 |
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| CN202010858287.7A Pending CN111878889A (en) | 2020-08-24 | 2020-08-24 | Heat exchange station system capable of reducing fluctuation of flow of heat supply main pipe network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175698A (en) * | 2021-06-08 | 2021-07-27 | 西安热工研究院有限公司 | Heat exchange station system and method for heating secondary net water by using geothermal energy |
| CN113568441A (en) * | 2021-08-27 | 2021-10-29 | 中国核动力研究设计院 | Liquid level control system and method for radioactive waste liquid evaporator |
| CN114135915A (en) * | 2021-12-03 | 2022-03-04 | 西安西热节能技术有限公司 | Can improve governing system of heat supply pipe network end user hydraulic power unbalance |
-
2020
- 2020-08-24 CN CN202010858287.7A patent/CN111878889A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175698A (en) * | 2021-06-08 | 2021-07-27 | 西安热工研究院有限公司 | Heat exchange station system and method for heating secondary net water by using geothermal energy |
| CN113175698B (en) * | 2021-06-08 | 2022-09-27 | 西安热工研究院有限公司 | Heat exchange station system and method for heating secondary net water by using geothermal energy |
| CN113568441A (en) * | 2021-08-27 | 2021-10-29 | 中国核动力研究设计院 | Liquid level control system and method for radioactive waste liquid evaporator |
| CN113568441B (en) * | 2021-08-27 | 2024-06-04 | 中国核动力研究设计院 | Liquid level control system and method for radioactive waste liquid evaporator |
| CN114135915A (en) * | 2021-12-03 | 2022-03-04 | 西安西热节能技术有限公司 | Can improve governing system of heat supply pipe network end user hydraulic power unbalance |
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