CN111853914A - Geothermal energy coupling gas boiler heating system - Google Patents
Geothermal energy coupling gas boiler heating system Download PDFInfo
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- CN111853914A CN111853914A CN202010760729.4A CN202010760729A CN111853914A CN 111853914 A CN111853914 A CN 111853914A CN 202010760729 A CN202010760729 A CN 202010760729A CN 111853914 A CN111853914 A CN 111853914A
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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
- F24D12/00—Other central heating systems
- F24D12/02—Other central heating systems having more than one heat source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
- F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
- F24T10/17—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using tubes closed at one end, i.e. return-type tubes
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/04—Gas or oil fired boiler
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/11—Geothermal energy
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
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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]
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Physics & Mathematics (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a geothermal energy coupling gas boiler heating system, which is connected with the evaporator side of a double-condenser heat pump unit through a heat exchange port of a geothermal heat exchanger, and a heat taking buried pipe of the geothermal heat exchanger is embedded in the middle-deep underground layer for heat taking; the condenser backward flow mouth of two condenser heat pump set and the heat supply pipeline return line of peak shaver boiler all connect in user's return line, utilize two condenser heat pump set and peak shaver boiler to constitute mixed connection user's heat supply pipe network, provide the auxiliary heating heat source through the peak shaver boiler, ensure to guarantee effectively to guarantee the heat supply balance at geothermal energy in the low temperature period, strengthened the adaptability of heat supply building heat source station and indoor outer weather. The closed circulation system can complement the heat supply system to realize real-time heat supply amount adjustment of the heat supply system, and the system can meet different heat loads at different temperatures, relieve labor force during operation, improve system efficiency and reduce operation and maintenance cost.
Description
Technical Field
The invention belongs to the field of geothermal heat supply, and particularly relates to a geothermal energy coupling gas-fired boiler heat supply system.
Background
The middle-deep geothermal energy is renewable energy which decays the molten rock pulp and radioactive substances of the earth and exists in the form of heat power, the development of the middle-deep geothermal energy is mainly based on the interference-free geothermal technology, the technology follows the thought of 'taking heat and not taking water', the heat energy stored in the middle-deep geothermal rock is taken out and utilized by drilling holes underground, and the method has the characteristics of environmental protection, high efficiency, simple equipment and low operation cost, and is green, clean and renewable energy. However, the construction of the medium-deep layer interference-free geothermal heat supply system has large initial investment, the collected geothermal energy can not effectively ensure heat supply balance in a low-temperature period, and the medium-deep layer interference-free geothermal heat supply system can not be effectively combined with the existing heat supply system at present, so that the utilization range and the development of the medium-deep layer interference-free geothermal heat are limited.
Disclosure of Invention
The invention aims to provide a geothermal energy coupling gas boiler heating system to overcome the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a geothermal energy coupling gas boiler heat supply system comprises a geothermal heat exchanger, a double-condenser heat pump unit and a peak shaving boiler, wherein a heat exchange port of the geothermal heat exchanger is connected with an evaporator side of the double-condenser heat pump unit, and a heat taking buried pipe of the geothermal heat exchanger is embedded in the underground of a middle-deep layer for taking heat; the condenser heat outlet of the double-condenser heat pump unit and the heat supply pipeline heat outlet pipeline of the peak-regulating boiler are both connected to a user heat supply pipeline, and the condenser return port of the double-condenser heat pump unit and the heat supply pipeline return pipeline of the peak-regulating boiler are both connected to a user return pipeline.
Furthermore, a heat outlet of the geothermal heat exchanger is connected with a heat inlet of an evaporator of the double-condenser heat pump unit, a return port of the geothermal heat exchanger is connected with an outlet of the evaporator of the double-condenser heat pump unit, a common pipe is arranged between water supply end connecting pipelines of the geothermal heat exchanger at a heat taking ground embedded pipe return end of the geothermal heat exchanger, a first circulating pump is arranged between the heat taking ground embedded pipe return end of the geothermal heat exchanger and the common pipe, and a second circulating pump is arranged between the common pipe and the double-condenser heat pump unit.
Furthermore, a third circulating pump is arranged on a return pipeline of a condenser of the double-condenser heat pump unit, and a fourth circulating pump is arranged on a return pipeline of the peak-shaving boiler.
Furthermore, the peak shaving boiler comprises a combustor and a heat exchanger, and the heat exchanger is connected with a user heat supply pipeline through a heat circulation pipeline.
Furthermore, the geothermal heat exchanger adopts a concentric sleeve vertical well ground heat exchanger or a U-shaped ground heat exchanger.
Furthermore, the heat-taking buried pipe of the concentric sleeve vertical well buried pipe heat exchanger is buried in the middle-deep underground layer for taking heat, the heat outlet of the concentric sleeve vertical well buried pipe heat exchanger is connected with the heat inlet of the evaporator side of the double-condenser heat pump unit, and the return port of the concentric sleeve vertical well buried pipe heat exchanger is connected with the outlet of the evaporator side of the double-condenser heat pump unit.
Furthermore, a heat taking buried pipe of the U-shaped buried pipe heat exchanger is buried in the middle-deep layer for taking heat, a heat outlet of the U-shaped buried pipe heat exchanger is connected with a heat inlet on the evaporator side of the double-condenser heat pump unit, and a return port of the U-shaped buried pipe heat exchanger is connected with an outlet on the evaporator side of the double-condenser heat pump unit.
Furthermore, the double-condenser heat pump unit adopts a double-condenser heat pump unit and comprises a condenser and an evaporator, a compressor is arranged between a heat outlet of the evaporator and an inlet of the condenser, and a throttling device is arranged between a return port of the evaporator and an outlet of the condenser.
Furthermore, a double-condenser heat pump unit climate compensator is arranged on the double-condenser heat pump unit, and a boiler climate compensator is arranged on the peak-regulating boiler.
Furthermore, a heat outlet pipeline and a return pipeline of the geothermal heat exchanger are respectively provided with a temperature sensor and a flow sensor which are used for monitoring the flow and the temperature condition of each pipeline in real time.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a geothermal energy coupling gas boiler heat supply system, which comprises a geothermal heat exchanger, a double-condenser heat pump unit and a peak shaving boiler, wherein a heat exchange port of the geothermal heat exchanger is connected with the evaporator side of the double-condenser heat pump unit, and a heat taking buried pipe of the geothermal heat exchanger is buried in the underground of a middle-deep layer for taking heat; the condenser of two condenser heat pump set goes out the heat supply pipeline that hot mouthful and peak shaver boiler go out the heat supply pipeline and all connect in user's heat supply pipeline, the condenser backward flow mouth of two condenser heat pump set and peak shaver boiler's heat supply pipeline return line all connect in user's return line, utilize two condenser heat pump set and peak shaver boiler to constitute the hybrid junction user heat supply pipe network, provide the auxiliary heating heat source through the peak shaver boiler, guarantee that the heat supply can effectively be guaranteed in geothermal energy in the low temperature period is balanced, the adaptability of heat supply building heat source station and indoor outer weather has been strengthened. The closed circulation system can complement the heat supply system to realize real-time heat supply amount adjustment of the heat supply system, and the system can meet different heat loads at different temperatures, relieve labor force during operation, improve system efficiency and reduce operation and maintenance cost.
Furthermore, the working medium circulation speed in the evaporator of the double-condenser heat pump unit is controlled through the second circulating pump, the circulation working medium flow in the evaporator of the double-condenser heat pump unit is improved, and the heat exchange heat is changed. The working medium circulation flow of the geothermal heat exchanger can be adjusted by the first circulating pump, so that the heat exchange quantity of the geothermal buried pipe is controlled, the geothermal circulation is kept in the best heat supply state at all times, the real-time heating quantity of the double-condenser heat pump unit can be improved by the structural design of the heat supply pipe of the heat exchanger and the frequency conversion of the first circulating pump and the second circulating pump, and the stable operation and the real-time heating quantity of the whole device are improved.
Further, utilize the flow that the fourth circulating pump adjusted user's backward flow rivers and got into the peak shaver boiler to can adjust the peak shaver boiler and intervene the heat size, according to user's needs and geothermal energy at the low temperature period difference in temperature, can effectively guarantee to be used for the heat supply balance.
Drawings
Fig. 1 is a schematic structural diagram of a heating system according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a dual condenser heat pump unit according to an embodiment of the present invention.
Wherein, 1, geothermal heat exchanger; 2. a double condenser heat pump unit; 3. a peak shaving boiler; 4. sharing the tubes; 5. a first circulation pump; 6. a second circulation pump; 7. an evaporator; 8. a condenser; 9. a climate compensator of a double-double condenser heat pump unit; 10. a boiler climate compensator; 11. a third circulation pump; 12. a fourth circulation pump; 13. a burner; 14. a heat exchanger; 15. a user heat supply pipeline; 16. a user return line; 17. a compressor; 18. a throttling device.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, a geothermal energy coupling gas boiler heating system comprises a geothermal heat exchanger 1, the device comprises a double-condenser heat pump unit 2 and a peak-regulating boiler 3, wherein a heat exchange port of the geothermal heat exchanger 1 is connected with the side of an evaporator 7 of the double-condenser heat pump unit 2, a heat taking buried pipe of the geothermal heat exchanger 1 is embedded in a middle-deep underground layer for taking heat, a heat outlet of a condenser 8 of the double-condenser heat pump unit 2 and a heat outlet pipeline of the peak-regulating boiler 3 are both connected to a user heat supply pipeline 15, a return port of the condenser 8 of the double-condenser heat pump unit 2 and a return pipeline of the heat supply pipeline of the peak-regulating boiler 3 are both connected to a user return pipeline 16, the condenser 8 of the double-condenser heat pump unit 2 supplies heat to a user through the user heat supply pipeline 15, and a one-way valve is arranged on the heat supply pipeline of the peak-regulating boiler 3 to prevent circulating hot water; during the use, utilize two condenser heat pump set 2 as geothermal source heat extraction heat transfer structure, with geothermol power enough supply users to use through 8 heat exchanges of condenser, when geothermal energy can't effectively guarantee the heat supply balance in the low temperature period, open peak shaver boiler 3, provide the auxiliary heating heat source through peak shaver boiler 3, ensure that can effectively guarantee the heat supply balance at geothermal energy in the low temperature period.
The water supply end of the geothermal heat exchanger 1 is connected with the heat inlet of the evaporator 7 of the double-condenser heat pump unit 2, the return end of the geothermal heat exchanger 1 is connected with the outlet of the evaporator 7 of the double-condenser heat pump unit 2, a common pipe 4 is arranged between the water supply end connecting pipelines of the geothermal heat exchanger 1 at the heat taking buried pipe return end of the geothermal heat exchanger 1, a first circulating pump 5 is arranged between the heat taking buried pipe return end of the geothermal heat exchanger 1 and the common pipe 4, the first circulating pump 5 is used for controlling the medium circulating speed in the heat taking buried pipe of the geothermal heat exchanger 1, a second circulating pump 6 is arranged between the common pipe 4 and the double-condenser heat pump unit 2 and is used for controlling the medium circulating speed and flow in the condenser of the double-condenser heat pump unit 2, the medium circulating speed in the condenser of the double-condenser heat pump unit 2 is controlled by the second circulating pump 6, and, the heat exchange response speed of the double-condenser heat pump unit 2 is improved. The circulation flow of the first circulating pump 5 capable of adjusting the geothermal heat exchanger 1 is utilized to change the heat exchange amount of the heat-taking ground buried pipe, so that the geothermal circulation keeps the best heat supply state all the time, and the heating capacity of the double-condenser heat pump unit 2 can be adjusted by utilizing the structural design of the common pipe 4 and matching the first circulating pump 5 and the second circulating pump 6, thereby improving the stable operation and the real-time heat supply amount of the whole device.
Be equipped with third circulating pump 11 on the backflow pipeline of two condenser heat pump set 2's condenser 8, be equipped with fourth circulating pump 12 on the peak shaver 3 backflow pipeline, utilize third circulating pump 11 to keep two condenser heat pump set 2's condenser 8's heat transfer speed, ensure that user's cooling cycle can get into two condenser heat pump set 2's condenser 8 and carry out the heat transfer, when local heat energy can't effectively guarantee the heat supply balance in low temperature period, open peak shaver 3, utilize fourth circulating pump 12 to adjust the flow that user's backward flow rivers got into peak shaver 3, thereby can adjust peak shaver 3 and intervene the heat size, according to user's needs and geothermal energy at low temperature period difference in temperature, can effectively guarantee to be used for the heat supply balance.
The peak shaver boiler 3 comprises a burner 13 and a heat exchanger 14, and the heat exchanger 14 is connected with a user heat supply pipeline through a heat circulation pipeline.
The geothermal heat exchanger 1 adopts a concentric sleeve vertical well ground heat exchanger or a U-shaped ground heat exchanger; a heat taking buried pipe of the concentric sleeve vertical well buried pipe heat exchanger is buried in the middle deep layer for taking heat, a heat outlet of the concentric sleeve vertical well buried pipe heat exchanger is connected with a heat inlet of the evaporator 7 side of the double-condenser heat pump unit 2, and a return port of the concentric sleeve vertical well buried pipe heat exchanger is connected with an outlet of the evaporator 7 side of the double-condenser heat pump unit 2;
the heat taking buried pipe of the U-shaped buried pipe heat exchanger is buried in the middle-deep underground for heat taking, the heat outlet of the U-shaped buried pipe heat exchanger is connected with the heat inlet of the evaporator side of the double-condenser heat pump unit 2, and the return port of the U-shaped buried pipe heat exchanger is connected with the outlet of the evaporator side of the double-condenser heat pump unit 2.
As shown in fig. 1 and fig. 2, the double-condenser heat pump unit 2 of the present application adopts a double-condenser heat pump unit, which includes a condenser 8 and an evaporator 7, a compressor 17 is disposed between a heat outlet of the evaporator 7 and an inlet of the condenser 8, and a throttling device 18 is disposed between a return port of the evaporator 7 and an outlet of the condenser 8; the heat source well circulating water enters an evaporator 7 of the double-condenser heat pump unit 2 through a first circulating pump 5 and a second circulating pump 6, a heat pump unit refrigerant exchanges heat with the heat source well circulating water in the evaporator to absorb geothermal energy carried by the heat source well circulating water, then the heat pump unit refrigerant passes through a compressor 17 and consumes electric energy in the compressor 17 to do work on the refrigerant, so that the refrigerant is heated and pressurized, enters a condenser 8, then exchanges heat with circulating water of a user heating network connected with the condenser 8 to cool, then enters a throttling device to be decompressed, and enters the evaporator to complete a complete refrigerant cycle.
As shown in fig. 1, in the present application, a mode of combining a concentric sleeve vertical well ground heat exchanger and a U-shaped ground heat exchanger is adopted, a heat outlet of the concentric sleeve vertical well ground heat exchanger is connected to a heat inlet of a first evaporator of a double condenser heat pump unit 2, and a return port of the concentric sleeve vertical well ground heat exchanger is connected to an outlet of the first evaporator of the double condenser heat pump unit 2; the heat outlet of the U-shaped ground heat exchanger is connected with the heat inlet of the second evaporator of the double-condenser heat pump unit 2, and the return port of the U-shaped ground heat exchanger is connected with the outlet of the second evaporator of the double-condenser heat pump unit 2.
The double-condenser heat pump unit 2 is provided with a double-condenser heat pump unit climate compensator 9 for automatically adjusting the heat load of the double-condenser heat pump unit 2 according to a set value, specifically, the double-condenser heat pump unit climate compensator 9 is connected to a controller, the controller is used for controlling the circulation speed of the second circulating pump 6, adjusting the heat entering the double-condenser heat pump unit 2, and feeding back the heat load required by the double-condenser heat pump unit 2 through the double-condenser heat pump unit climate compensator 9; the peak shaving boiler 3 is provided with a boiler climate compensator 10 for automatically adjusting the heat load of the peak shaving boiler 3 according to a set value, the boiler climate compensator 10 is connected to the controller, the controller is used for controlling the circulation speed of the fourth circulating pump 12, adjusting the flow entering the peak shaving boiler 3, and feeding back the heat load required by the peak shaving boiler 3 in real time through the boiler climate compensator 10, so that closed loop circulation control is formed, and the control precision is improved.
A heat outlet pipeline and a return pipeline of the geothermal heat exchanger 1 are respectively provided with a temperature sensor and a flow sensor for monitoring the flow and the temperature condition of each pipeline in real time.
The invention provides a geothermal energy coupling gas boiler heating system connected with a building heating pipe network from the heat source side, the heat exchange side and the load side of the heating system; the heating system adopting the middle-deep layer interference-free geothermal energy coupled with the gas boiler can regulate and control the heating load in real time by being coupled with the peak regulating boiler 3 of the building according to the heating real-time temperature, thereby enhancing the adaptability of the heat source station of the heating building and the indoor and outdoor climate. The energy-saving building is heated by the middle-deep layer undisturbed geothermal energy, the underground heat is only exchanged through the closed circulation system, the engineering difficulty caused by pumping and recharging is not needed, the cold and heat balance of soil in winter and summer is not needed to be considered relative to the shallow geothermal energy, and the problem of the actual heating engineering that large area heating in winter in northern severe cold and cold areas is realized and the heating is insufficient due to insufficient natural gas pressure can be solved in a clean and environment-friendly manner.
The geothermal energy is coupled with the gas boiler heating system to complement the heating system to realize the real-time heating load adjustment of the heating system. The lower the outdoor temperature is, the larger the building heat load is, and when the rated heating capacity of the heat pump unit cannot meet the main heating capacity of the building, the part of the peak shaving gas boiler, which bears the instantaneous heat load exceeding the heating capacity of the heat pump unit, is configured. When the outdoor temperature rises to a certain temperature, in order to avoid the ground source heat pump running at partial load, the peak shaving gas boiler needs to be closed so as to ensure the efficient and stable continuous running of the heating system. The boiler only runs in the low-temperature time period of the heating season, so that the operating cost is low by fully using the interference-free geothermal energy of the middle-deep layer, the initial investment is large, the initial investment of the gas boiler is small, the operation is stable and the cost is high, the different heat loads at different temperatures are met, the labor force during the operation can be relieved, the system efficiency is improved, and the operation and maintenance cost is reduced. Through a reliable control system, the combined heating system has stable and reliable heat output, so that the healthy and orderly development and utilization of the whole geothermal energy heating industry are promoted. The intelligent control of the temperature, the flow and the pressure of the heat supply pipe network in different areas and time sections is realized, the aims of intelligent temperature regulation, energy conservation and consumption reduction, improvement of management level and the like are realized, and the heat supply and energy conservation requirements of different fields of governments, enterprises, schools and the like can be met.
When the method is used for peak shaving, the indoor temperature cannot be too high when the high temperature and the low load of a heat user are ensured, heat supply can be guaranteed again when the low temperature and the high load are high, the actual heat consumption of the whole-year building can be reduced according to dynamic real-time heat load heat supply all the year around, and finally the energy conservation of the building is realized.
In low-temperature weather, the heat load of the building is large, and at the moment, the peak shaving boiler and the double-condenser heat pump unit run simultaneously; in high-temperature weather, the heat load of the building is small, the peak shaving boiler is closed at the moment, and only the double-condenser heat pump unit is operated. Indoor real-time temperature can detect the statistics through setting up temperature sensor in the building room, and the heat supply heat consumption of each family is counted in real time to branch family's heat meter. According to the real-time heat demand of the building, the circulating flow is regulated and controlled in real time through the operation of the variable frequency pump at different frequencies. The circulating water flow and the water supply temperature of each building are regulated and controlled by controlling the variable frequency pump.
The hot water prepared by the peak shaving boiler 3 is also led to a building heat consumer, and is pumped into the peak shaving boiler 3 by a fourth circulating pump after heat exchange to be heated to prepare the hot water.
For the peak shaving boiler 3, the constant flow operation and the proportion adjustment are carried out, when the heat load of low-temperature weather is large, the double-condenser heat pump unit runs at full load to share most of the heat load, and the rest load is borne by the peak shaving boiler; the residual load is shared by the boiler according to the size of the residual load, and the proportion is adjusted in real time according to the boiler climate compensator and the real-time heat load.
This application peak shaver includes high district heat exchanger and low district high district heat exchanger, and the hot water that supplies water hot water of the high district heat exchanger of peak shaver mixes with the hot water that the high district condenser prepared and gets into the high district heat consumer together. And (4) returning water after heat dissipation at the tail end of heat supply of the high area of the building respectively enters a high area heat exchanger and a high area condenser of the peak shaving boiler to prepare hot water.
The hot water supplied by the low-region heat exchanger of the peak-shaving boiler is mixed with the hot water prepared by the low-region condenser and enters the low-region heat user. And (4) returning water after heat dissipation at the tail end of the heat supply enters a high-area heat exchanger and a high-area condenser of the peak shaver respectively to prepare hot water.
The temperature sensor and the flowmeter of the whole system collect field data through the multifunctional programmable data collector, the field data are collected through the network switch, the data are monitored on a computer end, a Pad end or a mobile phone APP in real time, and meanwhile, the starting and stopping and opening states of equipment such as a remote automatic/manual control adjusting valve, a circulating pump and a water replenishing pump are realized according to the collected data and control parameter combination parameter logic set by management software of a control center (server).
The monitoring center comprises a monitoring computer and matched monitoring software. The platform can be managed by a general manager, and can also be used for creating managers according to departments and authorities, and each manager can log in through a local area network/extranet IP to perform functions of real-time checking of data of the department, inquiry and downloading of historical curves/historical data, printing and the like. The user can set the upper and lower limit values of the monitoring environment collected data by himself, the upper and lower limit values are exceeded or lowered, the software end generates clear sound alarm, and meanwhile mobile phone alarm information is sent to the user.
When the whole system runs, data such as temperature, pressure and flow can be conveniently monitored in real time, and meanwhile, equipment such as an adjusting valve, a circulating pump and a water replenishing pump can be automatically started and stopped and the opening state can be controlled through the change of collected parameters. In addition, in order to monitor the real-time situation of each point location more intuitively, different monitoring points can be set, and a real device position distribution diagram is simulated for checking. On the premise of ensuring the safe operation of the heating equipment, the comprehensive operation and control of heating and refrigerating are finished by using automatic control such as big data and cloud computing, so that the energy is saved and the environment is protected to the maximum extent. Therefore, the intelligent heating system has the characteristics of monitoring, adjustability, metering and predictability, and can realize the green, safe, economic and efficient operation of the system.
Claims (10)
1. A geothermal energy coupling gas boiler heating system is characterized by comprising a geothermal heat exchanger (1), a double-condenser heat pump unit (2) and a peak shaving boiler (3), wherein a heat exchange port of the geothermal heat exchanger (1) is connected with the side of an evaporator (7) of the double-condenser heat pump unit (2), and a heat taking buried pipe of the geothermal heat exchanger (1) is buried in the middle-deep underground layer for taking heat; a heat outlet of a condenser (8) of the double-condenser heat pump unit (2) and a heat outlet pipeline of a heat supply pipeline of the peak-regulating boiler (3) are connected with a user heat supply pipeline (15), and a return port of the condenser (8) of the double-condenser heat pump unit (2) and a return pipeline of the heat supply pipeline of the peak-regulating boiler (3) are connected with a user return pipeline (16).
2. A geothermal energy coupling gas boiler heating system according to claim 1, wherein a heat outlet of the geothermal heat exchanger (1) is connected to a heat inlet of an evaporator (7) of the double-condenser heat pump unit (2), a return port of the geothermal heat exchanger (1) is connected to an outlet of the evaporator (7) of the double-condenser heat pump unit (2), a common pipe (4) is arranged between water supply end connecting pipes of the geothermal heat exchanger (1) at a heat taking ground embedded pipe return end of the geothermal heat exchanger (1), a first circulating pump (5) is arranged between the heat taking ground embedded pipe return end of the geothermal heat exchanger (1) and the common pipe (4), and a second circulating pump (6) is arranged between the common pipe (4) and the double-condenser heat pump unit (2).
3. A geothermal energy coupling gas boiler heating system according to claim 1, wherein a third circulating pump (11) is arranged on a return pipe of the condenser (8) of the double condenser heat pump unit (2), and a fourth circulating pump (12) is arranged on a return pipe of the peak shaver boiler (3).
4. A geothermal energy coupled gas boiler heating system according to claim 1, wherein the peak shaver boiler (3) comprises a burner (13) and a heat exchanger (14), the heat exchanger (14) being connected to the user heating pipeline by a heat circulation pipeline.
5. A geothermal energy coupled gas boiler heating system according to claim 1, wherein the geothermal heat exchanger (1) is a concentric sleeve vertical well borehole ground heat exchanger or a U-shaped ground heat exchanger.
6. A geothermal energy coupling gas boiler heating system according to claim 5, wherein the heat taking buried pipe of the concentric sleeve vertical well buried pipe heat exchanger is buried in the middle deep underground for heat taking, the heat outlet of the concentric sleeve vertical well buried pipe heat exchanger is connected to the heat inlet of the evaporator (7) side of the double condenser heat pump unit (2), and the return port of the concentric sleeve vertical well buried pipe heat exchanger is connected to the outlet of the evaporator (7) side of the double condenser heat pump unit (2).
7. The heating system of the geothermal energy coupling gas boiler as recited in claim 5, wherein the heat taking ground pipe of the U-shaped ground pipe heat exchanger is buried in the middle deep underground for heat taking, the heat outlet of the U-shaped ground pipe heat exchanger is connected with the heat inlet of the evaporator side of the double-condenser heat pump unit (2), and the return port of the U-shaped ground pipe heat exchanger is connected with the outlet of the evaporator side of the double-condenser heat pump unit (2).
8. A geothermal energy coupling gas boiler heating system according to claim 1, wherein the double condenser heat pump unit (2) comprises a condenser (8) and an evaporator (7), a compressor (17) is arranged between the heat outlet of the evaporator (7) and the inlet of the condenser (8), and a throttling device (18) is arranged between the return port of the evaporator (7) and the outlet of the condenser (8).
9. A geothermal energy coupling gas boiler heating system according to claim 1, wherein a double condenser heat pump unit (2) is provided with a double condenser heat pump unit climate compensator (9), and a peaking boiler (3) is provided with a boiler climate compensator (10).
10. A geothermal energy coupled gas boiler heating system according to claim 1, wherein the heat outlet pipe and the return pipe of the geothermal heat exchanger (1) are provided with temperature sensors and flow sensors for real-time monitoring of the flow and temperature conditions of the pipes.
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