CN115111626A - Heat exchange station water mixing and heating system combined with room temperature monitoring and adjusting and operation method - Google Patents
Heat exchange station water mixing and heating system combined with room temperature monitoring and adjusting and operation method Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 26
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- 230000001105 regulatory effect Effects 0.000 claims description 56
- 239000012530 fluid Substances 0.000 claims description 15
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- 238000004134 energy conservation Methods 0.000 description 3
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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
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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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
- F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
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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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- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/02—Fluid distribution means
- F24D2220/0207—Pumps
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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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
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- 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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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The invention discloses a heat exchange station water mixing and heating system combined with room temperature monitoring and adjustment and an operation method thereof.
Description
Technical Field
The invention belongs to the technical field of accurate heat supply and energy conservation, and particularly relates to a heat exchange station water mixing heat supply system combined with room temperature monitoring and adjustment and an operation method.
Background
With the rapid development of economic construction and the continuous enlargement of urban building area, the demand of heating as the maximum energy consumption demand of building energy consumption and the demand of energy-saving and consumption-reducing technology for the heating are continuously increased. The new climate target of carbon peak reaching and carbon neutralization is a strategic decision of a planning and planning bureau, and the emission of CO2 caused by urban central heating is about 30% of the total emission of the building field, so that the central heating industry has a larger carbon-saving market, and the energy conservation and consumption reduction of a heating system are main ways for realizing the double-carbon target of the heating industry. The current central heating system has the problems of uneven heat distribution, substandard user room temperature and the like, one network side provides enough heat, but the hydraulic unbalance of the user tail ends of the two network sides leads to large flow difference of each unit, so that the lowest user at room temperature is guaranteed to be up to standard, other users are caused to have overhigh room temperature and serious waste of heat, and meanwhile, a heat exchange station is forced to operate in a small temperature difference and a large flow rate to cause low heat exchange efficiency and high power consumption of a heat pump.
Disclosure of Invention
In order to solve the problems in the prior art: firstly, in order to ensure that the lowest user at room temperature reaches the standard, the room temperature of other users is too high, and heat is seriously wasted; the invention provides a heat exchange station mixed water heat supply system combining room temperature monitoring and adjustment and an operation method thereof, wherein a water injection pump is additionally arranged in each building with two networks connected, the temperature difference of water supply and return in the heat exchange station is increased, the flow is reduced, and meanwhile, room temperature monitoring equipment and a flow balance valve are arranged in each unit and are jointly adjusted with a circulating water pump in the station, so that the aims of reducing the heat consumption and the power consumption of the heat supply system and realizing energy conservation, emission reduction and high-efficiency heating are achieved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a heat exchange station that combines room temperature monitoring to adjust mixes water heating system, includes heat exchange station and a plurality of resident's building that link to each other with it, wherein, heat exchange station includes: a primary net water supply pipe, a primary net water return pipe, a heat exchanger, a secondary net water supply main pipe and a secondary net water return main pipe; the primary net water supply pipe and the primary net water return pipe are respectively connected with the first net side of the heat exchanger, and the water inlet end of the secondary net water supply main pipe and the water outlet end of the secondary net water return pipe are respectively connected with the second net side of the heat exchanger; a heat exchange station water supply temperature sensor, a fluid power pump and a building water supply temperature sensor are sequentially arranged on the secondary network water supply main pipe according to the water supply flow direction; a building backwater temperature sensor, a heat exchange station backwater temperature sensor and a variable-frequency heat supply network circulating water pump are sequentially arranged on the secondary network backwater main pipe in the backwater flow direction;
the fluid power pump is connected with the secondary net water return main pipe to form a water mixing branch, and the communication position is positioned between the building water return temperature sensor and the heat exchange station water return temperature sensor;
the water mixing branch is provided with an electric mixed water flow regulating valve;
the water outlet end of the secondary net water supply main pipe is connected with a plurality of water supply branch pipes, and the water inlet end of the secondary net water return main pipe is connected with a plurality of water return branch pipes;
the residential building is connected between the water supply branch pipe and the water return branch pipe;
the return water branch pipe is provided with a flow regulating valve for regulating flow;
and the tail end of the residential building is provided with a room temperature acquisition device.
Furthermore, the heating system also comprises a centralized control platform;
the centralized control platform is respectively connected with the variable-frequency heat supply network circulating water pump, the heat exchange station water supply temperature sensor, the heat exchange station backwater temperature sensor, the mixed water flow electric regulating valve, the building water supply temperature sensor, the building backwater temperature sensor, the flow regulating valve and the room temperature acquisition device.
Furthermore, a water mixing branch stop valve is arranged on the water mixing branch.
Further, when the fluid power pump normally works, the water mixing branch stop valve is in an open state.
Further, the hydrodynamic pump is a water jet pump.
Further, the water jet pump comprises a working water inlet, a suction water inlet, a discharge port and a mixing cavity.
Furthermore, when the system operates, partial flow in the secondary net backwater main pipe is injected into a mixing cavity of the water injection pump through the water mixing branch and the suction water inlet.
Further, when the feedback temperature of a certain room temperature acquisition device is higher, the opening of the corresponding flow regulating valve is opened greatly; when the feedback temperature of a certain room temperature acquisition device is higher, the opening degree of the corresponding flow regulating valve is reduced.
Further, the heat exchanger is a plate heat exchanger.
An operation method of a heat exchange station water mixing heat supply system combined with room temperature monitoring and adjustment comprises the following steps:
the first-network water supply is subjected to heat exchange and temperature reduction in the heat exchanger to form first-network return water, the first-network return water is sent to a heat source, and the second-network return water at the user side is sent into the heat exchanger after being boosted by the variable-frequency heat-network circulating water pump to be heated up to form second-network water supply, and then is sent to the user for heating;
partial flow of the two-network backwater main pipe enters a fluid power pump through an electric mixed water flow regulating valve and is mixed with two-network water supply and then sent to each unit;
monitoring the water supply and return temperature and the temperature difference of a user by using a building water supply temperature sensor and a building water return temperature sensor, and adjusting the opening of the electric mixed water flow regulating valve according to the temperature difference data;
the heat exchange station water supply temperature sensor and the heat exchange station water supply temperature sensor are used for monitoring the temperature difference of supply water and return water of the two networks in the station, and when the water supply temperature meets the requirement and the temperature difference of the supply water and the return water of the two networks is small, the frequency of the variable-frequency heat supply network circulating water pump is reduced;
when a certain temperature acquisition device feeds back that the indoor temperature is higher, the opening degree of the corresponding flow regulating valve is reduced; conversely, when the temperature is lower, the opening degree of the regulating valve is increased;
when the room temperature of all users exceeds a set value, the frequency of the circulating water pump of the variable-frequency heat supply network is reduced through data feedback, and then the flow regulating valve of each user is regulated until each unit reaches the room temperature set value and the opening degree of one flow regulating valve is 100%.
Compared with the prior art, the invention has the following beneficial effects:
the utility model provides a heat exchange station that combines room temperature monitoring to adjust mixes water heating system, its advantage has:
(1) through set up fluid power pump in the building, supply the return water difference in the increase heat exchange station when guaranteeing user supply return water temperature and difference in temperature to reduce the flow of heat exchange station to pipe network between the building, reduce circulating water pump power consumption.
(2) A room temperature monitoring device and a flow regulating valve are arranged at the tail end of a user, and each unit pipe network in a building realizes hydraulic power and thermal power balance, so that heat consumption is saved.
(3) According to the user side temperature feedback regulation heat exchange station circulating water pump, the cooperation is simultaneously adjusted terminal flow control valve, distinguishes the user of different building structures and different heat load demands, realizes the accurate heat supply of timesharing subregion as required.
(4) The heat exchange station water supply and return temperature sensor is matched with the building water supply and return temperature sensor to adjust the water mixing flow ratio and the in-station two-network circulation flow, the tail end unit participates in temperature control joint adjustment, the in-station water supply and return temperature and the building water supply and return temperature are accurately controlled, linkage accurate adjustment from top to bottom of a source-network-user mode is achieved, the energy-saving and consumption-reducing space of a heat supply system is fully dug deeply, and the operation cost and the carbon emission amount of the heat supply network system are reduced to the maximum extent.
Furthermore, the invention is also provided with a centralized control platform, which can realize the automatic control of a plurality of devices in the system.
Furthermore, the mixed flow can be adjusted in a combined manner by matching with the electric mixed water flow adjusting valve through arranging the mixed water branch stop valve on the mixed water branch.
Furthermore, the hydrodynamic pump adopts a water injection pump, has stronger adaptability to conveying fluid and has double functions of generating vacuum and condensing steam.
Furthermore, the heat exchanger adopts a plate heat exchanger, so that the heat exchange effect can be greatly improved.
The invention also provides an operation method of the heat exchange station water mixing heat supply system combined with room temperature monitoring and adjustment, which realizes linkage adjustment balance of the heat exchange station and the heat supply tail end of the user unit, mixes water supply and return water at the user side, ensures the circulation flow of the user side and reduces the secondary side circulation flow of the heat exchange station at the same time, thereby reducing the energy consumption of the heat supply network circulation water pump.
Drawings
Fig. 1 is a schematic structural diagram of a heat exchange station water mixing and heating system combined with room temperature monitoring and adjustment.
Reference numerals:
1-a plate heat exchanger; 2-a frequency conversion type heat supply network circulating water pump; 3-water supply temperature sensor of heat exchange station; 4-a heat exchange station backwater temperature sensor; 5-water jet pump; 6-electric adjusting valve for water mixing flow; 7-a water mixing branch stop valve; 8-building water supply temperature sensor; 9-building backwater temperature sensor; 10-4 units of room temperature acquisition devices; 11-4 unit flow regulating valve; 12-3 units of room temperature acquisition devices; 13-3 unit flow regulating valve; 14-2 units of room temperature acquisition devices; 15-2 unit flow regulating valve; 16-1 unit room temperature acquisition device; 17-1 unit flow regulating valve.
Detailed Description
The invention relates to a heat exchange station mixed water heating system combined with room temperature monitoring and adjusting, which comprises a heat exchange station and a plurality of residential buildings connected with the heat exchange station, wherein the heat exchange station comprises: a primary net water supply pipe, a primary net water return pipe, a heat exchanger (plate heat exchanger 1), a secondary net water supply main pipe and a secondary net water return main pipe; the primary net water supply pipe and the primary net water return pipe are respectively connected with the first net side of the heat exchanger, and the water inlet end of the secondary net water supply main pipe and the water outlet end of the secondary net water return pipe are respectively connected with the second net side of the heat exchanger; a heat exchange station water supply temperature sensor 3, a fluid power pump and a building water supply temperature sensor 8 are sequentially arranged on the secondary network water supply main pipe according to the water supply flow direction; a building backwater temperature sensor 9, a heat exchange station backwater temperature sensor 4 and a variable-frequency heat supply network circulating water pump 2 are sequentially arranged on the secondary network backwater main pipe in a backwater flow direction; the fluid power pump is connected with the secondary net water return main pipe to form a water mixing branch, and the communication position is positioned between the building water return temperature sensor 9 and the heat exchange station water return temperature sensor 4; the water mixing branch is provided with an electric mixed water flow regulating valve 6; the water outlet end of the secondary net water supply main pipe is connected with a plurality of water supply branch pipes, and the water inlet end of the secondary net water return main pipe is connected with a plurality of water return branch pipes; the residential building is connected between the water supply branch pipe and the water return branch pipe; the return water branch pipe is provided with a flow regulating valve for regulating flow; and the tail end of the residential building is provided with a room temperature acquisition device.
The heating system further comprises a centralized control platform which is connected with the variable-frequency heat supply network circulating water pump 2, the heat exchange station water supply temperature sensor 3, the heat exchange station return water temperature sensor 4, the mixed water flow electric regulating valve 6, the building water supply temperature sensor 8, the building return water temperature sensor 9, the flow regulating valve and the room temperature acquisition device.
A water mixing branch stop valve 7 is also arranged on the water mixing branch; when the fluid power pump works normally, the water mixing branch stop valve 7 is in an open state;
the hydrodynamic pump is a water injection pump 5 and comprises a working water inlet, a suction water inlet, a discharge port and a mixing cavity, and when the system runs, part of flow in the secondary net backwater main pipe is guided into the mixing cavity of the water injection pump 5 through the water mixing branch and the suction water inlet;
when the feedback temperature of a certain room temperature acquisition device is higher, the opening of the corresponding flow regulating valve is opened greatly; when the feedback temperature of a certain room temperature acquisition device is higher, the opening degree of the corresponding flow regulating valve is reduced.
The invention provides a running method of a heat exchange station water mixing and heating system combined with room temperature monitoring and adjustment, which comprises the following specific steps:
the first-network water supply is subjected to heat exchange and temperature reduction in the heat exchanger to form first-network return water, the first-network return water is sent to a heat source, and the second-network return water at the user side is sent into the heat exchanger after being boosted by the variable-frequency heat-network circulating water pump 2 to be heated up to form second-network water supply, and then is sent to the user for heating;
partial flow of the two-network backwater main pipe enters a fluid power pump through an electric mixed water flow regulating valve 6 to be mixed with two-network water supply and then is sent to each unit;
monitoring the temperature and the temperature difference of water supply and return of a user by using a building water supply temperature sensor 8 and a building water return temperature sensor 9, and adjusting the opening of the electric mixed water flow adjusting valve 6 according to the temperature difference data;
the heat exchange station water supply temperature sensor 3 and the heat exchange station water supply temperature sensor 4 are used for monitoring the temperature difference of supply and return water of the two networks in the station, and when the water supply temperature meets the requirement and the temperature difference of the supply and return water of the two networks is small, the frequency of the variable-frequency heat network circulating water pump 2 is reduced;
when a certain temperature acquisition device feeds back that the indoor temperature is higher, the opening degree of the corresponding flow regulating valve is reduced; otherwise, when the temperature is lower, the opening degree of the regulating valve is increased;
when the room temperature of all users exceeds the set value, the frequency of the circulating water pump 2 of the variable-frequency heat supply network is reduced through data feedback, and then the flow regulating valve of each user is regulated until each unit reaches the set value of the room temperature and the opening degree of one flow regulating valve is 100%.
The present invention will now be described in further detail with reference to specific examples and figures, which are provided for purposes of illustration and not limitation.
Example 1
When a heat exchange station mixed water heat supply system combined with room temperature monitoring and adjustment runs, one-network water supply is subjected to heat exchange and temperature reduction in a plate heat exchanger 1 to form one-network return water and is sent back to a heat source, and two-network return water on a user side is sent into the plate heat exchanger 1 after being boosted by a variable-frequency heat supply network circulating water pump 2 to be heated up to form two-network water supply and is sent to a user for heating; before entering a user unit, the two-network water supply firstly passes through a water injection pump 5 to inject the flow of a backwater main pipe at a building water supply main pipe, the flow of the backwater main pipe sequentially passes through a water mixing branch stop valve 7 and a mixed water flow electric regulating valve 6 to enter the water injection pump 5 to be mixed with the water supply and then is sent to each unit, the regulation principle is that the building backwater supply and backwater are mixed by the water injection pump 5, the supply and backwater temperature difference of the two network sides in a heat exchange station is increased under the condition of ensuring the supply and backwater temperature difference of building users, so that the two-network circulation flow between the heat exchange station and the building of the users is reduced, the frequency of a variable frequency type heat network circulation water pump 2 is reduced, the purpose of reducing the power consumption of the water pump is achieved, the supply and backwater temperature difference of the users are monitored by a building water supply temperature sensor 8 and a building backwater temperature sensor 9, and the opening degree of the mixed water flow electric regulating valve 6 is adjusted according to the feedback temperature of the building water supply temperature sensor 8, adjusting the flow ratio of the first net water and the second net water in the mixed water to ensure that the mixed water is stabilized at the water supply temperature required by a user; the heat exchange station water supply temperature sensor 3 and the heat exchange station water supply temperature sensor 4 are used for monitoring the temperature difference of supply and return water of the two networks in the station, when the water supply temperature meets the requirement of the temperature difference of the supply and return water, the circulation flow of the two networks is overlarge while the heat load requirement of a user is met, and at the moment, the frequency of the variable-frequency heat network circulation water pump 2 is reduced so as to reduce the power consumption; after the two-network water supply is carried out to each unit of a user, a room temperature acquisition device and a flow regulating valve are respectively arranged in each unit, taking 4 units as an example, when the indoor temperature fed back by the 4-unit room temperature acquisition device 10 is higher, the opening degree of the 4-unit flow regulating valve 11 is reduced, otherwise, when the temperature is lower, the opening degree of the regulating valve is increased, when the room temperature of 4 units exceeds the set value, the data (acquired by the 4-unit room temperature acquisition device 10, the 3-unit room temperature acquisition device 12, the 2-unit room temperature acquisition device 14 and the 1-unit room temperature acquisition device 17) are fed back to the centralized control platform to reduce the frequency of the variable-frequency heat supply network circulating water pump 2, then, the opening degrees of the 4 unit flow regulating valves 11, the 3 unit flow regulating valves 13, the 2 unit flow regulating valves 15 and the 1 unit flow regulating valve 17 are automatically regulated through the centralized control platform until the opening degree of a certain flow regulating valve is 100 percent when each unit reaches a set value of room temperature.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a heat exchange station that combines room temperature monitoring to adjust mixes water heating system which characterized in that, includes heat exchange station and a plurality of resident's building that link to each other with it, wherein, heat exchange station includes: a primary net water supply pipe, a primary net water return pipe, a heat exchanger, a secondary net water supply main pipe and a secondary net water return main pipe; the primary net water supply pipe and the primary net water return pipe are respectively connected with the first net side of the heat exchanger, and the water inlet end of the secondary net water supply main pipe and the water outlet end of the secondary net water return pipe are respectively connected with the second net side of the heat exchanger; a heat exchange station water supply temperature sensor (3), a fluid power pump and a building water supply temperature sensor (8) are sequentially arranged on the secondary network water supply main pipe according to the water supply flow direction; a building backwater temperature sensor (9), a heat exchange station backwater temperature sensor (4) and a variable-frequency heat supply network circulating water pump (2) are sequentially arranged on the secondary network backwater main pipe in a backwater flow direction;
the fluid power pump is connected with the secondary net return water main pipe to form a water mixing branch, and the communication position is positioned between the building return water temperature sensor (9) and the heat exchange station return water temperature sensor (4);
an electric mixed water flow regulating valve (6) is arranged on the mixed water branch;
the water outlet end of the secondary network water supply main pipe is connected with a plurality of water supply branch pipes, and the water inlet end of the secondary network water return main pipe is connected with a plurality of water return branch pipes;
the residential building is connected between the water supply branch pipe and the water return branch pipe;
the return water branch pipe is provided with a flow regulating valve for regulating flow;
and the tail end of the residential building is provided with a room temperature acquisition device.
2. The mixed heat supply system of the heat exchange station combined with the room temperature monitoring and adjusting function as claimed in claim 1, wherein the heat supply system further comprises a centralized control platform;
the centralized control platform is respectively connected with the variable-frequency heat supply network circulating water pump (2), the heat exchange station water supply temperature sensor (3), the heat exchange station backwater temperature sensor (4), the mixed water flow electric regulating valve (6), the building water supply temperature sensor (8), the building backwater temperature sensor (9), the flow regulating valve and the room temperature acquisition device.
3. The mixed heat supply system of the heat exchange station combined with the room temperature monitoring and adjusting function as claimed in claim 1, wherein the mixed branch is provided with a mixed branch stop valve (7).
4. The mixed heat supply system of the heat exchange station combined with the room temperature monitoring and adjusting function as claimed in claim 3, wherein the mixed branch stop valve (7) is in an open state when the fluid power pump is in normal operation.
5. A heat exchange station mixing heat supply system combined with room temperature monitoring regulation according to claim 1, characterized in that the fluid powered pump is a water jet pump (5).
6. The mixed heat supply system of the heat exchange station combined with the room temperature monitoring and adjustment as recited in claim 5, characterized in that the water injection pump (5) comprises a working water inlet, a suction water inlet, a discharge port and a mixing chamber.
7. The mixed heat supply system of the heat exchange station combined with room temperature monitoring and adjusting function according to claim 6, characterized in that when the system is in operation, part of the flow in the secondary net return water main pipe is guided into the mixing cavity of the water jet pump (5) through the water mixing branch and the suction water inlet.
8. The mixed water heating system of the heat exchange station combined with the room temperature monitoring and adjusting function as claimed in claim 1, wherein when the feedback temperature of a certain room temperature collecting device is higher, the opening degree of the corresponding flow regulating valve is increased; when the feedback temperature of a certain room temperature acquisition device is higher, the opening degree of the corresponding flow regulating valve is reduced.
9. A heat exchange station mixed water heating system combined with room temperature monitoring and regulation according to claim 1, characterized in that the heat exchanger is a plate heat exchanger (1).
10. An operation method of a heat exchange station mixed water heating system combined with room temperature monitoring and adjustment is characterized in that based on the heating system of any one of claims 1-9, the operation method is as follows:
the first-network water supply is subjected to heat exchange and temperature reduction in the heat exchanger to form first-network return water, the first-network return water is sent to a heat source, and the second-network return water at the user side is sent into the heat exchanger after being boosted by the variable-frequency heat-network circulating water pump (2) to be heated to form second-network water supply, and then is sent to the user for heating;
partial flow of the two-network backwater main pipe enters a fluid power pump through an electric mixed water flow regulating valve (6) to be mixed with two-network water supply and then is sent to each unit;
monitoring the water supply and return temperature and the temperature difference of a user by using a building water supply temperature sensor (8) and a building water return temperature sensor (9), and adjusting the opening of an electric mixed water flow adjusting valve (6) according to temperature difference data;
the heat exchange station water supply temperature sensor (3) and the heat exchange station water supply temperature sensor (4) are used for monitoring the temperature difference of supply and return water of the two networks in the station, and when the water supply temperature meets the requirement and the temperature difference of the supply and return water of the two networks is small, the frequency of the variable-frequency heat supply network circulating water pump (2) is reduced;
when a certain temperature acquisition device feeds back that the indoor temperature is higher, the opening degree of the corresponding flow regulating valve is reduced; otherwise, when the temperature is lower, the opening degree of the regulating valve is increased;
when the room temperature of all users exceeds a set value, the frequency of the circulating water pump (2) of the variable-frequency heat supply network is reduced through data feedback, and then the flow regulating valve of each user is regulated until each unit reaches the room temperature set value and the opening of one flow regulating valve is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210704946.0A CN115111626A (en) | 2022-06-21 | 2022-06-21 | Heat exchange station water mixing and heating system combined with room temperature monitoring and adjusting and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210704946.0A CN115111626A (en) | 2022-06-21 | 2022-06-21 | Heat exchange station water mixing and heating system combined with room temperature monitoring and adjusting and operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115111626A true CN115111626A (en) | 2022-09-27 |
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| CN202210704946.0A Pending CN115111626A (en) | 2022-06-21 | 2022-06-21 | Heat exchange station water mixing and heating system combined with room temperature monitoring and adjusting and operation method |
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