CN218864301U - Clean low-carbon heating device capable of utilizing geothermal energy in multiple stages - Google Patents
Clean low-carbon heating device capable of utilizing geothermal energy in multiple stages Download PDFInfo
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- CN218864301U CN218864301U CN202222769752.7U CN202222769752U CN218864301U CN 218864301 U CN218864301 U CN 218864301U CN 202222769752 U CN202222769752 U CN 202222769752U CN 218864301 U CN218864301 U CN 218864301U
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Abstract
The utility model discloses a clean low-carbon heating device which utilizes geothermal energy in multiple stages, comprising a middle-deep geothermal well, an electric heat pump, a primary heat exchange plate and a heat user; the middle-deep geothermal well is provided with an output end and an input end, the electric heat pump is provided with two output ends and two input ends, and the heat user is provided with an output end and an input end. The utility model discloses use geothermal energy as the main heat source of getting, further draw the heat of geothermal through the electric drive heat pump, the thought of multistage utilization has been introduced, through constantly cooling down and the heat transfer, not only make full use of geothermal water heat, electric drive's heat pump has increased the flexibility of system moreover, the nimble adjustment of heat supply scale that this device bore, accommodation is bigger, the influence of other energy in affiliated to place is less, can use widely in many areas to reach energy-efficient and clean low carbon's dual effect.
Description
Technical Field
The utility model relates to a heating device technical field specifically is a clean low carbon heating device of multistage utilization geothermal energy.
Background
In the future of the development of the building industry, particularly, the heat for buildings is mainly advocated to use green clean energy, and the heat for buildings not only conforms to the established double-carbon target strategy, but also is an attempt, exploration and breakthrough on energy utilization. Meanwhile, along with the continuous deepening of energy conservation of buildings, the strength of energy utilization is required to be increased, clean energy and low-carbon energy are preferred, the arrangement is started in advance for energy conservation and carbon reduction of the buildings in the future, and the use difficulty of the clean energy is broken in the aspect of heat supply.
According to the related data, the geothermal resources in China are very abundant, the ascertained reserves are many and widely distributed, the current drilling technology is mature and stable after decades of development, but the utilization degree of the geothermal energy is very small compared with other energy sources such as wind energy, solar energy, oil gas and the like, the geothermal resources in partial areas need a certain recovery time after being used, the problem of insufficient geothermal energy can occur in annual utilization, and the geothermal energy utilization is in line with the obvious seasonal change in terms of building thermal heating. At present, most of the utilization of geothermal energy is mainly shallow geothermal energy, and at the moment, the geothermal energy is only used for summer refrigeration or winter heating of office buildings, and the requirement of large-area residential buildings cannot be met because the shallow geothermal unit needs less heat and occupies larger area, but the actual implementation is often not met due to limited field.
The middle-deep geothermal energy is not limited by the method, the depth of a single well can reach 1000-3000 m according to the gradient and the demand of geothermal energy, the heat taking mode is different from the water taking mode of shallow geothermal energy, the water taking and the heat taking of shallow geothermal energy affect the underground water resource, the environment protection and the green energy saving can not be promoted together, in addition, the shallow buried pipe has insufficient heat and wide occupied area, and the winter heat using demand of residential buildings can not be met. Sufficient heat is obtained through indirect heat exchange between the buried pipe and deep soil or rock, and real heat extraction and water non-extraction are achieved. According to the existing mature middle-deep layer drilling technology, no technical problem exists in the construction of a geothermal well, and the mode of efficiently utilizing the heat of geothermal heat to realize low-carbonization heat supply is provided due to the large depth of the geothermal well. This device uses geothermal energy as main heat source of getting, further draws the heat of geothermal through electric drive heat pump, the thought of multistage utilization has been introduced, through constantly cooling down and the heat transfer, not only make full use of geothermal water heat, electric drive's heat pump has increased the flexibility of system moreover, the nimble adjustment of heat supply scale that this device bore, accommodation is bigger, the influence of other energy of affiliated to place is less, can use widely in many areas to reach the dual effect of energy-efficient and clean low carbon.
Disclosure of Invention
A technical object of the utility model is to provide a clean low carbon heating device of multistage utilization geothermal energy mainly trades, electric heat pump, storage water tank force (forcing) pump, mixes water flowmeter and regulation control valve, pipeline temperature sensor, heat consumer, intelligent modulator by middle and deep geothermal well, elementary heat transfer board and constitutes jointly.
This device produces the geothermal water of uniform temperature through the well of middle-deep layer geothermal, at first trade through elementary heat transfer board and carry out a heat transfer, the rethread is mixed water and is cooled down and carry out the heat transfer cooling once more through electric heat pump after reaching the safe temperature of heat pump, geothermal water after the cooling gets back to the geothermal well once more and carries out the circulation heating, the temperature of user side trades through the board equally and electronic twice heating, carry to the user after finally reaching the target temperature, provide heat supply service for the building, satisfy winter heat supply demand. The temperature data is collected and monitored according to the intelligent controller in the whole process, and the states of the heat pump, the water pump and the control valve are adjusted to meet respective target parameters, so that the clean low-carbon heat supply orderly operation is realized.
In order to realize the purpose, the technical scheme adopted by the utility model is a clean low-carbon heating device which utilizes geothermal energy in multiple stages, and comprises a middle-deep geothermal well, an electric heat pump, a primary heat exchange plate and a heat user;
the middle-deep geothermal well is provided with an output end and an input end, the electric heat pump is provided with two output ends and two input ends, and the heat consumer is provided with an output end and an input end;
the output end of the middle-deep geothermal well and the output end of the heat consumer are respectively communicated with two input ends of the electric heat pump through pipelines, the two pipelines penetrate through the primary heat exchange plate to exchange heat, and the two pipelines exchange heat through the primary heat exchange plate;
one output end of the electric heat pump is communicated with a heat user through a pipeline, and the other output end of the electric heat pump is communicated with the input end of the middle-deep geothermal well through a pipeline;
and the pipeline part communicated with the output end of the heat consumer and penetrating through the primary heat exchange plate is communicated with a water mixing pressure pump through another pipeline.
Furthermore, the part of the pipeline on the output end of the heat user, which is before entering the primary heat exchange plate for replacement, the part of the pipeline on the output end of the middle-deep geothermal well, which is before passing the primary heat exchange plate for replacement, the part of the pipeline on the output end of the middle-deep geothermal well, and the pipeline of the electric heat pump communicated with the heat user are all provided with temperature sensors.
Furthermore, the input end of the water mixing and pressurizing pump is communicated with a water storage tank through a pipeline, and the other output end of the electric heat pump is communicated with the water storage tank through a pipeline.
Furthermore, a water dividing adjusting valve and a water dividing flow meter are arranged on a pipeline communicated with the water storage tank through the electric heat pump, and a mixed water flow meter and a mixed water adjusting valve are arranged on the other pipeline communicated with the pipeline part communicated with the heat user output end and penetrating through the primary heat exchange plate.
Furthermore, temperature monitoring parts are arranged on the water storage tank and on pipelines communicated with the water storage tank and the electric heat pump.
Further, still include intelligent control ware, intelligent control ware and six temperature sensor, two temperature monitoring spare, divide water governing valve, divide water flowmeter, mix the water force (forcing) pump, mix the water flowmeter and mix water governing valve electric connection.
The utility model has the advantages that:
this device produces the geothermal water of uniform temperature through well deep geothermal well, at first trade through elementary heat transfer board and carry out a heat transfer, the rethread is mixed water and is cooled down and carry out the heat transfer cooling once more through electric heat pump after reaching the safe temperature of heat pump, geothermal water after the cooling gets back to the geothermal well once more and carries out the circulation heating, the temperature of user side trades and electronic twice heating through the board equally, carry to the user after finally reaching the target temperature, provide heat supply service for the building, satisfy winter heat supply demand. The temperature data is collected and monitored according to the intelligent regulator in the whole process, and the states of the heat pump, the water pump and the control valve are regulated to meet respective target parameters, so that the clean low-carbon heat supply orderly operation is realized. The utility model is used for the area that has the heating demand winter utilizes middle and deep geothermal development and heat transfer technique, for the building provides the heat guarantee, the utility model discloses both satisfied novel distributed heat supply's requirement, also possess the characteristics of clean low carbon heat supply, possess the dual meaning that economizes on carbon subtracts carbon, adapt to china's new trend to building energy conservation development at present, for clean heat supply contribution a new mode.
Drawings
Fig. 1 is an overall view of a clean low-carbon heating device using geothermal energy at multiple stages.
1. An intelligent regulator; 2. a middle-deep geothermal well; 3. exchanging a primary heat exchange plate;
4. a geothermal well water outlet temperature sensor; 5. replacing the plate with a primary water outlet temperature sensor;
6. a user backwater temperature sensor; 7. replacing a secondary water outlet temperature sensor by the plate;
8. an electrically powered heat pump; 9. a heat pump inlet water temperature sensor; 10. a heat pump water outlet temperature sensor;
11. a user water supply temperature sensor; 12. a hot user; 13. a water storage tank;
14. a water mixing pressure pump; 15. a mixed water flow meter; 16. a mixed water regulating valve;
17. a water diversion regulating valve; 18. a water diversion flow meter; 19. a water storage tank temperature sensor.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in figure 1, the utility model discloses a technical scheme be a clean low carbon heating device of multistage utilization geothermal energy, and this device is given first place to with utilizing geothermal energy, prepares hot water through middle and deep geothermal well 2, trades respectively through the board and 8 multistage heat transfer backs with electric heat pump, finally gets back to the geothermal well with low temperature water and carries out the heat transfer once more. The mode can realize the high-efficiency utilization of geothermal energy, and realize the aim of clean low-carbon heat supply, and comprises a middle-deep geothermal well 2, an electric heat pump 8, a primary heat exchange plate 3 and a heat user 12;
the middle-deep geothermal well 2 is provided with an output end and an input end, the electric heat pump 8 is provided with two output ends and two input ends, and the heat consumer 12 is provided with an output end and an input end;
the output end of the middle-deep geothermal well 2 and the output end of the heat consumer 12 are respectively communicated with two input ends of the electric heat pump 8 through pipelines, the two pipelines both penetrate through the primary heat exchange plate 3, and the two pipelines realize heat exchange through the primary heat exchange plate 3;
one output end of the electric heat pump 8 is communicated with a heat user 12 through a pipeline, and the other output end of the electric heat pump is communicated with the input end of the middle-deep geothermal well 2 through a pipeline;
the pipeline part communicated with the output end of the heat consumer 12 and penetrating through the primary heat exchange plate 3 is communicated with a water mixing pressurizing pump 14 through another pipeline.
In this embodiment, the part of the pipeline on the output end of the heat consumer 12 before entering the primary heat exchange plate 3 and penetrating out of the primary heat exchange plate 3, the part of the pipeline on the output end of the middle-deep geothermal well 2 before entering the primary heat exchange plate 3, penetrating out of the primary heat exchange plate 3, and entering the electric heat pump 8 are all provided with temperature sensors on the pipeline communicated with the heat consumer 12, and the six temperature sensors are a user return water temperature sensor 6, a plate exchange secondary outlet water temperature sensor 7, a geothermal well outlet water temperature sensor 4, a plate exchange primary outlet water temperature sensor 5, a heat pump inlet water temperature sensor 9 and a user supply water temperature sensor 11 in sequence.
In this embodiment, the input end of the water mixing and pressurizing pump 14 is communicated with the water storage tank 13 through a pipeline, and the other output end of the electric heat pump 8 is communicated with the water storage tank 13 through a pipeline.
In this embodiment, a pipeline through which the electric heat pump 8 is communicated with the water storage tank 13 is provided with a water diversion regulating valve 17 and a water diversion flow meter 18, and another pipeline through which the output end of the heat consumer 12 is communicated and which passes through the pipeline part of the primary heat exchange plate 3 is provided with a mixed water flow meter 15 and a mixed water regulating valve 16.
In this embodiment, the water storage tank 13 and the pipeline connecting the electric heat pump 8 and the water storage tank 13 are provided with temperature monitoring components, and the two temperature monitoring components are respectively a water storage tank temperature sensor 19 and a heat pump outlet water temperature sensor 10.
In this embodiment, the intelligent water mixing and pressurizing device further comprises an intelligent controller 1, and the intelligent controller 1 is electrically connected with six temperature sensors, two temperature monitoring parts, a water dividing regulating valve 17, a water dividing flow meter 18, a water mixing and pressurizing pump 14, a water mixing flow meter 15 and a water mixing regulating valve 16.
1) The device adopts the middle-deep geothermal well 2 to inject circulating water through manual work, and utilizes the constant and unchangeable characteristic of the ground temperature to carry out indirect heat exchange to obtain geothermal water with a certain temperature. The prepared geothermal water is monitored by a geothermal well outlet water temperature sensor 4, enters a primary heat exchange plate 3 at the same time, provides a part of heat for the return water from a heat user 12, heats the return water to a certain temperature, and is measured and monitored by a plate exchange secondary outlet water temperature sensor 7.
2) This device trades 3 through elementary heat transfer board, geothermal water carries out the analysis according to the measured data of heat pump temperature sensor 9 before getting into electric heat pump 8 through intelligent modulator 1 and whether satisfies electric heat pump 8's the temperature requirement of intaking, if unsatisfied ground hydrothermal water that trades 3 from elementary heat transfer board carries out muddy water cooling through muddy water governing valve 16 linkage muddy water force (forcing) pump 14, then get into electric heat pump 8, use the target temperature of hot user 12 to control the power of adjusting electric heat pump 8 with the temperature data of user water supply temperature sensor 11 as the criterion this moment, make it satisfy the heat supply demand.
3) The device is provided with a water storage tank 13, so that on one hand, geothermal water is ensured to enter the electric heat pump 8 to meet the requirement of a certain temperature parameter, the geothermal water passing through the electric heat pump 8 needs to be recycled at the same flow rate because the geothermal water is mixed with the flow rate recorded by the mixed water flow meter 15, and a water distribution regulating valve 17 and a water distribution flow meter 18 are arranged to regulate and recycle the previously mixed water amount; on the other hand, the water storage tank 13 also has the function of supplementing circularly used geothermal water, so that the geothermal water quantity is stabilized, and the heat of geothermal heat is ensured to meet the requirement.
4) The required heat supply requirement of a heat user 12 of the device is firstly obtained through the primary heat exchange plate 3, if the measurement data of the secondary outlet water temperature sensor 7 of the plate exchange meets the target temperature requirement of the water supply temperature sensor 11 of the user, the electric heat pump 8 does not need to be put into operation at the moment, and the electricity is saved; the required circulation flow of the hot user 12 is controlled by the intelligent controller 1 to realize the quantity regulating function.
After the device is used, the temperature sensors are arranged to measure the outlet water of geothermal water, the outlet water of the plate exchange, the inlet water of the heat pump and the outlet water temperature of the heat pump, so that the temperature of the geothermal water after the geothermal water is exchanged by the primary plate is not higher than 40 ℃, in order to ensure the operation safety of the electric heat pump 8, the temperature of the water entering the heat pump is not higher than 30 ℃, the amount of cold water from the water storage tank 13 is adjusted according to the inlet water temperature of the heat pump, the geothermal water after the geothermal water is exchanged by the electric heat pump 8 returns to the geothermal well for heat extraction, and part of the geothermal water returns to the water storage tank 13. The device adopts the multi-stage heat exchange thought of plate exchange and an electric heat pump 8, and simultaneously, the sufficient heat exchange quantity is ensured and the safe and stable operation of the heat pump is ensured by utilizing a cooling mode; the user side of the device carries out temperature monitoring according to actual requirements, and the intelligent controller 1 controls the operation parameters of the heat pump to reach the target temperature of the user, so that the automatic control and adjustment of the device are realized.
The device takes full use of geothermal energy as a basis, and provides winter heating hot water for users by plate exchange, heat pump multi-stage heat exchange and automatic control means regulation and control. From the aspect of energy use, the device provides a clean low-carbonization heat supply route for heating in winter, and is favorable for efficiently utilizing geothermal energy. From the aspect of future implementation and application, along with the continuous deepening and concrete implementation of the national dual-carbon target, a distributed clean heating mode is adopted for areas outside a centralized heating area, so that the method is not only an attempt and exploration on a novel heating mode, but also has sustainable development potential compared with electric heating, and is more favorable for the deep implementation of low-carbon clean heating.
The device comprises the following specific application steps:
1. the construction of the middle-deep geothermal well 2 is completed through the existing mature drilling technology, the geothermal well has certain heat after a certain depth according to the geothermal gradient, the artificially prefabricated soft water is injected into the geothermal well through the pipeline, and the geothermal well carries out indirect heat exchange with underground soil or rock through the pipe wall, so that the hot water with certain temperature is obtained, and the hot water enters a machine room heat exchange system.
2. The hot water which obtains heat from the middle deep geothermal well 2 firstly passes through a primary heat exchange plate 3 of a machine room, at the moment, the temperature of the geothermal water after primary heat exchange is sequentially monitored through a geothermal well water outlet temperature sensor 4 and a plate primary water outlet temperature sensor 5, meanwhile, an adjusting instruction is given through an intelligent controller 1 to control the flow of a user side, the temperature data measured by the plate primary water outlet temperature sensor 5 is ensured not to be higher than 40 ℃, and the heat exchange effect and the heat exchange quantity of the primary plate exchange are ensured.
3. Through the primary heat exchange plate 3, before the geothermal water enters the evaporator of the electric heat pump 8, in order to ensure the safety of the operation condition of the electric heat pump 8, the geothermal water at the moment needs to be mixed with water for cooling, so that the measurement data of the heat pump inlet water temperature sensor 9 is not higher than 30 ℃. Through intelligent regulation ware 1 to mixing water regulating valve 16 realization constant temperature regulation, at this moment according to mixing water flowmeter 15 monitoring mixing water flow, according to mixing water force (forcing) pump 14 water intaking from storage water tank 13, the regulation water pump satisfies the pressure demand to mixing water. The cooled geothermal water enters the electric heat pump 8, and the output of the electric heat pump 8 is adjusted according to the temperature target of the water supply temperature sensor 11 at the user side.
4. Geothermal water is after the heat transfer of cooling down once more through electric heat pump 8, monitors geothermal water temperature through heat pump leaving water temperature sensor 10, owing to sneak into partly water yield before getting into electric heat pump 8, this part water yield only is used for guaranteeing electric heat pump 8's safety and stability operation, should retrieve the water yield of sneaking into again after geothermal water passes through electric heat pump 8 heat transfer, realizes sneaking into the water yield separation through the water distribution governing valve 17 and the water distribution flowmeter 18 that set up, gets back to simultaneously in the storage water tank 13. In addition, the rest geothermal water returns to the geothermal well 2 in the middle deep layer for circulation heating again.
5. After the load of a heat user 12 is gradually reduced, namely the temperature target of a water supply temperature sensor 11 on the user side is reduced, the device firstly adjusts the water yield of the geothermal well through an intelligent controller 1 so as to fully utilize the circulating heat of geothermal water and ensure that the geothermal energy is utilized to the maximum extent; and secondly, the output of the electric heat pump 8 is reduced, the primary heat exchange plate 3 is fully utilized, the power consumption of the system is reduced, and electricity and carbon are saved. After the load of the user side is gradually increased, the water quantity of the geothermal well is preferentially adjusted, and then the output power of the electric heat pump 8 is adjusted to meet the temperature required by the user side.
6. According to 19 temperature monitoring of intelligent modulator 1 to storage water tank temperature sensor in this device, the temperature of storage water tank 13 probably has to rise along with the operation, circulates the cooling to storage water tank 13 alone under the heat supply demand that does not influence user side through electric heat pump 8 this moment, makes it resume to original temperature state.
Through each above-mentioned step, this device accomplishes to the multistage echelon utilization of geothermal energy, accomplishes make full use of from geothermal energy use angle, accomplishes to extract the heat as required from geothermal temperature angle. The device takes the intelligent regulator as a main analysis, calculation and control basis to regulate the running state of each device. Geothermal energy is used as green low-carbonization heat for future heat supply development, and a sustainable green carbon reduction technical route is provided for building heat. The utility model discloses the heat source of device uses geothermal energy as leading, and the high efficiency of comprehensive consideration can and green electric power, can exert the echelon value of geothermal energy, can guarantee geothermal utilization ratio again, and the high efficiency can through electric heat pump 8 reduces the consumption of pure electric power, and this provides technical support for low carbonization heat supply, reaches the dual purpose of energy utilization and festival carbon.
Claims (6)
1. The utility model provides a clean low carbon heating device of multistage utilization geothermal energy which characterized in that: comprises a middle-deep geothermal well, an electric heat pump, a primary heat exchange plate and a heat user;
the middle-deep geothermal well is provided with an output end and an input end, the electric heat pump is provided with two output ends and two input ends, and the heat user is provided with an output end and an input end;
the output end of the middle-deep geothermal well and the output end of the heat consumer are respectively communicated with two input ends of the electric heat pump through pipelines, the pipelines of the two output ends penetrate through the primary heat exchange plate to exchange heat, and the pipelines of the two output ends exchange heat through the primary heat exchange plate to realize heat exchange;
one output end of the electric heat pump is communicated with a heat user through a pipeline, and the other output end of the electric heat pump is communicated with the input end of the middle-deep geothermal well through a pipeline;
the pipeline part communicated with the output end of the heat user and penetrating through the primary heat exchange plate is communicated with a mixed water pressurizing pump through another pipeline.
2. The clean low-carbon heating device using geothermal energy in multiple stages as claimed in claim 1, wherein: an upper pipeline of the output end of the heat user enters a position before the primary heat exchange plate is replaced and penetrates out of the position before the primary heat exchange plate is replaced, and a position of an upper pipeline of the output end of the middle-deep geothermal well which enters the primary heat exchange plate is replaced and penetrates out of the position before the primary heat exchange plate is replaced and enters the electric heat pump and a pipeline which is communicated with the heat user of the electric heat pump are provided with temperature sensors.
3. The clean low-carbon heating device using the geothermal energy at multiple stages as claimed in claim 1, wherein: the input end of the water mixing pressure pump is communicated with a water storage tank through a pipeline, and the other output end of the electric heat pump is communicated with the water storage tank through a pipeline.
4. A clean low-carbon heating apparatus using geothermal energy at multiple stages according to claim 3, wherein: the pipeline of the electric heat pump communicated with the water storage tank is provided with a water dividing regulating valve and a water dividing flow meter, and the other pipeline of the pipeline communicated with the heat user output end and penetrating through the primary heat exchange plate is provided with a water mixing flow meter and a water mixing regulating valve.
5. The clean low-carbon heating device using the geothermal energy at multiple stages as claimed in claim 4, wherein: temperature monitoring pieces are arranged on the water storage tank and on pipelines communicated with the water storage tank and the electric heat pump.
6. The clean low-carbon heating device using geothermal energy in multiple stages as claimed in claim 5, wherein: still include intelligent control ware, intelligent control ware and six temperature sensor, two temperature monitoring spare, division governing valve, division flowmeter, muddy water force (forcing) pump, mix the flowmeter and mix water governing valve electric connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222769752.7U CN218864301U (en) | 2022-10-20 | 2022-10-20 | Clean low-carbon heating device capable of utilizing geothermal energy in multiple stages |
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| CN202222769752.7U CN218864301U (en) | 2022-10-20 | 2022-10-20 | Clean low-carbon heating device capable of utilizing geothermal energy in multiple stages |
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