CN114484562A - Geothermal and gas multi-energy complementary heating system - Google Patents
Geothermal and gas multi-energy complementary heating system Download PDFInfo
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- CN114484562A CN114484562A CN202210116666.8A CN202210116666A CN114484562A CN 114484562 A CN114484562 A CN 114484562A CN 202210116666 A CN202210116666 A CN 202210116666A CN 114484562 A CN114484562 A CN 114484562A
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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
- 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
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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
- F24D2200/32—Heat sources or energy sources involving multiple heat sources in combination or as alternative heat sources
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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
- F24D2220/06—Heat exchangers
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Abstract
本发明涉及一种地热与燃气多能互补供热系统，包括地热井、换热装置一、锅炉和高温用户端，地热井和换热装置一通过换热管路形成回路，位于地热井和换热装置一入口之间的换热管路上固定安装有地热泵组；换热装置一还与高温用户端通过高温供热管路形成回路，高温供热管路上固定安装有高温循环泵组；锅炉的入口和出口分别通过管路与对应的高温供热管路连通，高温用户端进水口和换热装置一之间的管路对应与锅炉入口和出口连通之间的部位固定安装有阀门。本发明的有益效果是以地热能供热为主，天然气供热为辅，通过供热期间内不同室外温度变化，调整运行策略，逐步实现分级介入、梯次供热的效果，在满足供热温度的前提下，降低了能耗，实现了低碳环保。
The invention relates to a geothermal and gas multi-energy complementary heating system, comprising a geothermal well, a heat exchange device, a boiler and a high-temperature user end. A geothermal heat pump unit is fixedly installed on the heat exchange pipeline between the inlets of the heat device 1; the heat exchange device 1 also forms a circuit with the high temperature user end through a high temperature heat supply pipeline, and a high temperature circulating pump set is fixedly installed on the high temperature heat supply pipeline; the boiler The inlet and outlet of the boiler are respectively connected with the corresponding high-temperature heating pipeline through pipelines, and the pipeline between the high-temperature user-end water inlet and the heat exchange device 1 is fixedly installed with a valve corresponding to the part communicating with the boiler inlet and outlet. The beneficial effects of the present invention are mainly based on geothermal energy heating, supplemented by natural gas heating, by adjusting the operation strategy through different outdoor temperature changes during the heating period, and gradually realizing the effects of graded intervention and echelon heating, and satisfying the heating temperature On the premise of reducing energy consumption and realizing low-carbon environmental protection.
Description
Technical Field
The invention relates to the technical field of heat supply, in particular to a geothermal and gas multi-energy complementary heat supply system.
Background
Coal burning of central heating boiler rooms in northern areas has been completed for many years, but with the implementation of the concept of double carbon and the running and maintenance cost of natural gas heat supply, more and more gas boiler rooms are not laid out, and how to realize the combined operation of geothermal energy and gas boilers becomes a subject under the large background of high energy consumption and high emission.
Disclosure of Invention
The invention aims to solve the technical problem of providing a geothermal and gas multi-energy complementary heating system and aims to solve the problems in the prior art.
The technical scheme for solving the technical problems is as follows:
a geothermal and gas multi-energy complementary heating system comprises a geothermal well, a first heat exchange device, a boiler and a high-temperature user side, wherein the geothermal well and the first heat exchange device are communicated through a heat exchange pipeline to form a circulation loop, and a geothermal pump group is fixedly arranged on the heat exchange pipeline between the geothermal well and an inlet of the first heat exchange device; the first heat exchange device is also communicated with the high-temperature user end through a high-temperature heat supply pipeline to form a circulation loop, and a high-temperature circulation pump group is fixedly installed on the high-temperature heat supply pipeline;
the inlet and the outlet of the boiler are communicated with the water inlet of the high-temperature user side and the high-temperature heat supply pipeline between the first heat exchange devices through pipelines respectively, and valves are fixedly arranged at positions, corresponding to the positions between the inlet and the outlet of the boiler, of the water inlet of the high-temperature user side and the first heat exchange devices.
The invention has the beneficial effects that: when the weather is cold, the boiler is not started and the valve is opened, water at a high-temperature user side directly exchanges heat with hot water of the geothermal well through the first heat exchange device to realize high-temperature heat supply, and the water after heat exchange of the geothermal well is recharged into the geothermal well, so that water resources are saved;
when the weather is very cold, the boiler is opened and the valve is closed; the water at the high-temperature user side exchanges heat with the geothermal well through the first heat exchange device, the water after heat exchange is sent into the boiler to be heated, and the heated water is supplied to the high-temperature user side to supply heat, so that the heat supply is sufficient.
The invention takes geothermal energy heat supply as a main part and natural gas heat supply as an auxiliary part, and gradually realizes the effects of graded intervention and echelon heat supply by adjusting the operation strategy through different outdoor temperature changes in the heat supply period, thereby reducing the energy consumption and realizing low carbon and environmental protection on the premise of meeting the heat supply temperature.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the first heat exchange device comprises at least one high-temperature heat exchanger, and each high-temperature heat exchanger is provided with a first inlet and a first outlet which are mutually communicated, and a second inlet and a second outlet which are mutually communicated; the inlet I and the outlet I are respectively communicated with the geothermal well through the heat exchange pipeline, the inlet II is communicated with a water outlet of the high-temperature user end through the high-temperature heat supply pipeline, and the outlet II is communicated with a water inlet of the high-temperature user end through the high-temperature heat supply pipeline.
The beneficial effect who adopts above-mentioned further scheme is that during the heat supply, realizes the heat transfer of high temperature user end and geothermal well through high temperature heat exchanger, and the heat supply effect preferred.
Furthermore, the heat exchange device comprises a plurality of high-temperature heat exchangers which are distributed in parallel.
The beneficial effects of adopting above-mentioned further scheme are simple structure, reasonable in design improves the efficiency of heat supply, and the heat supply is sufficient.
The system further comprises a second heat exchange device and a low-temperature user side, wherein the second heat exchange device is arranged on the heat exchange pipeline between the outlet of the first heat exchange device and the geothermal well, and the second heat exchange device is communicated with the low-temperature user side through a low-temperature heat supply pipeline to form a circulation loop; and a low-temperature circulating pump set is fixedly arranged on the low-temperature heat supply pipeline.
The further scheme has the advantages that when the weather is cold, the boiler is not started and the valve is opened, water at a high-temperature user side directly exchanges heat with hot water of the geothermal well through the first heat exchange device, and high-temperature heat supply is achieved; then, water at the low-temperature user side exchanges heat with geothermal water sent out by the first heat exchange device through the second heat exchange device to realize low-temperature heat supply, and the water after heat exchange of the geothermal well is recharged into the geothermal well, so that water resources are saved, the design is reasonable, and the heat exchange efficiency is greatly improved;
when the weather is very cold, the boiler is opened and the valve is closed; the water at the high-temperature user side exchanges heat with the geothermal well through the first heat exchange device, the water after heat exchange is sent into the boiler to be heated, and the heated water is supplied to the high-temperature user side to supply heat, so that the heat supply is sufficient; then, the water of the low-temperature user side exchanges heat with geothermal water sent out by the heat exchange device I through the heat exchange device II, low-temperature heat supply is achieved, the geothermal well is refilled with water after heat exchange, water resources are saved, the design is reasonable, and the heat exchange efficiency is greatly improved.
Further, the second heat exchange device comprises a low-temperature heat exchanger, and a third inlet and a third outlet which are communicated with each other, and a fourth inlet and a fourth outlet which are communicated with each other are arranged on the low-temperature heat exchanger; the inlet III is communicated with the first heat exchange device through the heat exchange pipeline, and the outlet tee is communicated with the geothermal well through the heat exchange pipeline; the inlet cross joint is communicated with a water outlet of the low-temperature user end through the low-temperature heat supply pipeline, and the outlet cross joint is communicated with a water inlet of the low-temperature user end through the low-temperature heat supply pipeline.
The beneficial effect who adopts above-mentioned further scheme is that during the heat supply, realizes the heat transfer of low temperature user end and geothermal well through low temperature heat exchanger, and the heat supply effect preferred.
Furthermore, a dirt separator is fixedly mounted at the water outlet of the high-temperature user side and/or the water outlet of the low-temperature user side respectively.
The beneficial effects of adopting above-mentioned further scheme are that during the heat supply, get rid of the impurity of aquatic through the dirt separator, guarantee the working property of each part to guarantee entire system's normal operating.
Furthermore, the high-temperature circulating pump group and/or the low-temperature circulating pump group are respectively connected with heat supply bypass pipelines in parallel, and each heat supply bypass pipeline is fixedly provided with a heat supply bypass valve.
The beneficial effects of adopting above-mentioned further scheme are that simple structure, reasonable in design guarantees the normal operating of entire system during the maintenance, need not to suspend, convenient to use.
The water replenishing device is communicated with the high-temperature heat supply pipeline between the first heat exchange device and the water outlet of the high-temperature user end through a high-temperature water replenishing pipeline, and a high-temperature water replenishing pump set is fixedly installed on the high-temperature water replenishing pipeline;
the water supplementing device is also communicated with the low-temperature heat supply pipeline between the second heat exchange device and the water outlet of the low-temperature user end through a low-temperature water supplementing pipeline, and a low-temperature water supplementing pump set is fixedly installed on the low-temperature water supplementing pipeline; the water supplementing device is also communicated with the boiler through a pipeline.
The beneficial effect who adopts above-mentioned further scheme is that during the heat supply, regularly for boiler, high temperature user side and low temperature user side make-up water through the moisturizing device, guarantees entire system's normal operating.
Further, the water inlet intercommunication of moisturizing device has the inlet channel, fixed mounting has the demineralizer on the inlet channel.
The beneficial effect of adopting above-mentioned further scheme is that during the moisturizing, at first carry out softening treatment through the demineralizer to water, avoid water scale deposit in the pipeline and influence the operation of entire system.
Furthermore, the softener is connected with a water supplementing bypass pipeline in parallel, and a water supplementing bypass valve is fixedly installed on the water supplementing bypass pipeline.
The beneficial effects of adopting above-mentioned further scheme are simple structure, reasonable in design guarantees the moisturizing operation normal operating during the maintenance, need not to suspend.
Drawings
FIG. 1 is a schematic view of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a geothermal well; 2. a boiler; 3. a high temperature user side; 4. a valve; 5. a high temperature heat exchanger; 6. a low-temperature user terminal; 7. a dirt separator; 8. a heat supply bypass line; 9. a softener; 10. a water supplement bypass pipeline; 11. a low temperature heat exchanger; 12. a high temperature circulation pump; 13. a low temperature circulation pump; 14. a water tank; 15. a high-temperature water replenishing pump; 16. a low-temperature water replenishing pump; 17. a ground heat pump.
Detailed Description
The principles and features of this invention are described in connection with the drawings and the detailed description of the invention, which are set forth below as examples to illustrate the invention and not to limit the scope of the invention.
Example 1
As shown in fig. 1, the present embodiment provides a geothermal and gas multi-energy complementary heating system, which includes a geothermal well 1, a first heat exchange device, a boiler 2, and a high-temperature user end 3, wherein the geothermal well 1 and the first heat exchange device are communicated through a heat exchange pipeline to form a circulation loop, and a geothermal pump group is fixedly installed on a heat exchange pipeline between the geothermal well 1 and an inlet of the first heat exchange device; the first heat exchange device is also communicated with the high-temperature user end 3 through a high-temperature heat supply pipeline to form a circulation loop, and a high-temperature circulation pump group is fixedly arranged on the high-temperature heat supply pipeline;
the inlet and the outlet of the boiler 2 are respectively communicated with a high-temperature heat supply pipeline between the water inlet of the high-temperature user end 3 and the first heat exchange device through pipelines, and a valve 4 is fixedly arranged at a position between the water inlet of the high-temperature user end 3 and the first heat exchange device and a communicated position of the inlet and the outlet of the boiler 2 corresponding to the pipeline.
When the weather is cold, the boiler 2 is not started and the valve 4 is opened, water at the high-temperature user side 3 directly exchanges heat with hot water in the geothermal well 1 through the first heat exchange device to realize high-temperature heat supply, and the water after heat exchange of the geothermal well 1 is returned to the geothermal well 1, so that water resources are saved;
when the weather is very cold, the boiler 2 is opened and the valve 4 is closed; the water of the high-temperature user side 3 exchanges heat with the geothermal well 1 through the first heat exchange device, the water after heat exchange is sent to the boiler 2 to be heated, and the heated water is supplied to the high-temperature user side 3 to supply heat, so that the heat supply is sufficient.
Preferably, in this embodiment, the high temperature circulating pump group includes at least one high temperature circulating pump 12.
Preferably, in this embodiment, the high temperature circulating pump group includes a plurality of high temperature circulating pumps 12, the plurality of high temperature circulating pumps 12 are distributed in parallel, and valves are respectively and fixedly installed at positions corresponding to the inlet and the outlet of the high temperature circulating pump 12 on the pipeline installed on each high temperature circulating pump 12.
Preferably, in the present embodiment, the ground heat pump set comprises at least one ground heat pump 17.
Preferably, in this embodiment, the ground heat pump set includes a plurality of ground heat pumps 17, the plurality of ground heat pumps 17 are distributed in parallel, and a valve is respectively and fixedly installed on a pipeline installed on each ground heat pump 17 corresponding to the position of the inlet and the position of the outlet of the ground heat pump 17.
It should be noted that the geothermal pump set may also be installed on a heat exchange pipeline between the geothermal well 1 and an outlet of the heat exchange device. Preferably, in this embodiment, the high temperature user end 3 is a heating end of a radiator.
The embodiment uses geothermal energy heat supply as the main, and natural gas heat supply is assisted, through different outdoor temperature changes in the heat supply period, adjusts the operation strategy, progressively realizes the effect of intervene in grades, echelon heat supply, under the prerequisite that satisfies the heat supply temperature, has reduced the energy consumption, has realized the low carbon environmental protection.
Except the above embodiment, the high temperature user end 3 can also directly carry out heat exchange heating through the first heat exchange device, namely, the boiler 2 is not arranged, but the heating is insufficient when the weather is very cold.
In addition, the number of the water outlet pipelines of the geothermal well 1 can be one or more, a plurality of water outlet pipelines are collected into a main water outlet pipeline, and the main water outlet pipeline is communicated with the heat exchange device I.
The boiler 2 is preferably a gas boiler.
Example 2
On the basis of the embodiment 1, in the embodiment, the first heat exchange device comprises at least one high-temperature heat exchanger 5, and each high-temperature heat exchanger 5 is provided with a first inlet and a first outlet which are communicated with each other, and a second inlet and a second outlet which are communicated with each other; the first inlet and the first outlet are respectively communicated with the geothermal well 1 through heat exchange pipelines, the second inlet is communicated with a water outlet of a high-temperature user end 3 through a high-temperature heat supply pipeline, and the second outlet is communicated with a water inlet of the high-temperature user end 3 through the high-temperature heat supply pipeline.
During heat supply, the heat exchange between the high-temperature user end 3 and the geothermal well 1 is realized through the high-temperature heat exchanger 5, and the heat supply effect is better.
Preferably, in this embodiment, every high temperature heat exchanger 5 all adopts plate heat exchanger, simple structure, and the heat transfer effect preferred, make full use of geothermal energy.
It should be noted that the inlet of the first heat exchange device in embodiment 1 refers to the inlet of the plurality of high-temperature heat exchangers 5.
Example 3
On the basis of embodiment 2, in this embodiment, heat transfer device one includes a plurality of high temperature heat exchangers 5, and a plurality of high temperature heat exchangers 5 are parallelly connected to be distributed, simple structure, and reasonable in design improves the efficiency of heat supply, and the heat supply is sufficient.
It should be noted that the first inlets and the first outlets of the plurality of high-temperature heat exchangers 5 are respectively communicated with the geothermal well 1 through heat exchange pipelines, and the heat exchange pipelines communicated with the first outlets are gathered to a main return pipeline which is communicated with the geothermal well 1; and the inlets II of the high-temperature heat exchangers 5 are respectively communicated with the corresponding high-temperature heat supply pipelines, and the outlets II of the high-temperature heat exchangers 5 are respectively communicated with the corresponding high-temperature heat supply pipelines.
Example 4
On the basis of the above embodiments, the present embodiment further includes a second heat exchange device and a low temperature user terminal 6, the geothermal well 1, the first heat exchange device and the second heat exchange device are sequentially communicated through a heat exchange pipeline to form a circulation loop, and the second heat exchange device is further communicated with the low temperature user terminal 6 through a low temperature heat supply pipeline to form a circulation loop; and a low-temperature circulating pump set is fixedly arranged on the low-temperature heat supply pipeline.
When the weather is cold, the boiler 2 is not started and the valve 4 is opened, and the water at the high-temperature user side 3 directly exchanges heat with the hot water in the geothermal well 1 through the first heat exchange device to realize high-temperature heat supply; then, the water of the low-temperature user side 6 exchanges heat with geothermal water sent out by the first heat exchange device through the second heat exchange device to realize low-temperature heat supply, and the water after heat exchange of the geothermal well 1 is returned into the geothermal well 1, so that water resources are saved, the design is reasonable, and the heat exchange efficiency is greatly improved;
when the weather is very cold, the boiler 2 is opened and the valve 4 is closed; the water of the high-temperature user side 3 exchanges heat with the geothermal well 1 through the first heat exchange device, the water after heat exchange is sent to the boiler 2 for heating, and the heated water is supplied to the high-temperature user side 3 for heat supply and is sufficient in heat supply; then, the water of the low-temperature user side 6 exchanges heat with the geothermal water sent out by the first heat exchange device through the second heat exchange device, low-temperature heat supply is achieved, the geothermal well 1 is filled with the water after heat exchange, water resources are saved, the design is reasonable, and the heat exchange efficiency is greatly improved.
Preferably, in this embodiment, the cryogenic recycle pump package comprises at least one cryogenic recycle pump 13.
Preferably, in this embodiment, the cryogenic circulating pump group includes a plurality of cryogenic circulating pumps 13, the plurality of cryogenic circulating pumps 13 are distributed in parallel, and valves are respectively and fixedly installed at positions corresponding to inlets and outlets of the cryogenic circulating pumps 13 on a pipeline where each cryogenic circulating pump 13 is installed.
Preferably, in this embodiment, the low temperature user terminal 6 is a floor heating terminal.
Example 5
On the basis of the embodiment 4, in the embodiment, the second heat exchange device comprises a low-temperature heat exchanger 11, and the low-temperature heat exchanger 11 is provided with a third inlet and a third outlet which are communicated with each other, and a fourth inlet and a fourth outlet which are communicated with each other; the inlet tee joint is communicated with the first heat exchange device through a heat exchange pipeline, and the outlet tee joint is communicated with the geothermal well 1 through a heat exchange pipeline; the inlet four is communicated with the water outlet of the low-temperature user end 6 through a low-temperature heat supply pipeline, and the outlet four-way low-temperature heat supply pipeline is communicated with the water inlet of the low-temperature user end 6.
During heat supply, the heat exchange between the low-temperature user end 6 and the geothermal well 1 is realized through the low-temperature heat exchanger 11, and the heat supply effect is better.
Preferably, in this embodiment, the cryogenic heat exchanger 11 is connected in parallel with a bypass pipeline, two ends of the bypass pipeline are respectively communicated with the pipeline at the third inlet and the pipeline at the third outlet, and a bypass valve is fixedly installed on the bypass pipeline. When normal heat supply is carried out, the bypass valve is closed, water in the geothermal well 1 enters the low-temperature heat exchanger 11 for heat exchange after heat exchange through the high-temperature heat exchanger 5, and is refilled into the geothermal well 1; during maintenance, the bypass valve is opened, water in the geothermal well 1 is directly refilled into the geothermal well 1 after heat exchange through the high-temperature heat exchanger 5, the scheme is reasonable in design, and normal operation of the whole system is guaranteed.
Example 6
In this embodiment, on the basis of any one of embodiments 4 to 5, the dirt separator 7 is fixedly installed at the water outlet of the high temperature user end 3 and/or the water outlet of the low temperature user end 6. During heat supply, impurities in water are removed through the dirt separator 7, and the working performance of each component is guaranteed, so that the normal operation of the whole system is guaranteed.
It should be noted that the above-mentioned dirt separator 7 is made by the prior art, and the detailed structure and principle thereof are not described herein.
In addition, the two dirt removers 7 are respectively and fixedly installed on the corresponding pipelines.
In addition to the above embodiments, a filter may be used instead of the dirt separator 7.
Example 7
On the basis of any one of embodiments 4 to 6, in this embodiment, the high temperature circulating pump group and/or the low temperature circulating pump group are respectively connected in parallel with a heat supply bypass pipeline 8, and each heat supply bypass pipeline 8 is fixedly provided with a heat supply bypass valve. The scheme has the advantages of simple structure, reasonable design, no need of pause and convenient use, and can ensure the normal operation of the whole system during maintenance.
Example 8
On the basis of any one of embodiments 4 to 7, this embodiment further includes a water replenishing device, the water replenishing device is communicated with the high-temperature heat supply pipeline between the first heat exchanging device and the water outlet of the high-temperature user end 3 through a high-temperature water replenishing pipeline, and a high-temperature water replenishing pump set is fixedly installed on the high-temperature water replenishing pipeline.
Preferably, in this embodiment, the water replenishing device includes a water tank 14, and a water pump is fixedly installed in the water tank 14 and sends out water in the water tank 14.
It should be noted that a water replenishing port is arranged at the top of the water tank 14, and a cover plate capable of being opened and closed is arranged at the water replenishing port, so that water can be manually replenished into the water tank 14 through the water replenishing port at regular intervals, or the water can be replenished into the water tank 14 through a water pump mode, and the normal operation of water replenishing operation can be ensured.
Preferably, in this embodiment, the high temperature make-up water pump set includes at least one high temperature make-up water pump 15.
Preferably, in this embodiment, the high-temperature water replenishing pump group includes a plurality of high-temperature water replenishing pumps 15, the plurality of high-temperature water replenishing pumps 15 are distributed in parallel, and valves are respectively and fixedly mounted at positions corresponding to an inlet and an outlet of each high-temperature water replenishing pump 15 on a pipeline on which each high-temperature water replenishing pump 15 is mounted.
In addition, the high-temperature water replenishing pump set is also connected with a high-temperature water replenishing bypass pipeline in parallel, so that the normal operation of the whole system is ensured.
Preferably, in this embodiment, the water supplementing device is further communicated with the low-temperature heat supply pipeline between the second heat exchanging device and the water outlet of the low-temperature user side 6 through a low-temperature water supplementing pipeline, and a low-temperature water supplementing pump set is fixedly installed on the low-temperature water supplementing pipeline; the water replenishing device is also communicated with the boiler 2 through a pipeline.
Preferably, in this embodiment, the low temperature make-up water pump set includes at least one low temperature make-up water pump 16.
Preferably, in this embodiment, the low-temperature water replenishing pump group includes a plurality of low-temperature water replenishing pumps 16, the plurality of low-temperature water replenishing pumps 16 are distributed in parallel, and valves are respectively and fixedly mounted at positions corresponding to an inlet and an outlet of each low-temperature water replenishing pump 16 on a pipeline where each low-temperature water replenishing pump 16 is mounted.
In addition, the low-temperature water replenishing pump set is also connected with a low-temperature water replenishing bypass pipeline in parallel, so that the normal operation of the whole system is ensured.
During heat supply, water is periodically supplemented to the boiler 2, the high-temperature user side 3 and the low-temperature user side 6 through the water supplementing device, and normal operation of the whole system is guaranteed.
Besides the above embodiments, the boiler 2, the high temperature user side 3 and the low temperature user side 6 can also use a plurality of water tanks 14 for heat supply, but the distribution of the pipelines is complicated and the occupied space is large.
Example 9
On the basis of embodiment 8, in this embodiment, the water inlet intercommunication of moisturizing device has the inlet channel, and fixed mounting has demineralizer 9 on the inlet channel. When water is supplemented, firstly, the water is softened by the softener 9, so that the phenomenon that the operation of the whole system is influenced by scaling of the water in a pipeline is avoided.
The softener 9 is made by the prior art, and the detailed structure and principle thereof are not described herein.
When in use, the water inlet of the softener 9 is communicated with the main water replenishing pipe, the water outlet of the softener is communicated with the inlet of the water tank 14, and valves are respectively and fixedly arranged at the water inlet and the water outlet of the softener 9. When water is supplemented, water can be directly sent to the softener 9 to be softened through the water supplementing pump, and then the softened water is sent to the water tank 14 to be stored.
Example 10
On the basis of embodiment 9, in this embodiment, softener 9 connects in parallel has moisturizing bypass pipeline 10, and fixed mounting has the moisturizing bypass valve on the moisturizing bypass pipeline 10, simple structure, and reasonable in design guarantees moisturizing operation normal operating during the maintenance, need not to suspend.
The working principle of the invention is as follows:
when the weather is cold, the boiler 2 is not started and the valve 4 is opened, at the moment, high-temperature water with the temperature of 69 ℃ and the temperature of 150t/h sent by the geothermal well 1 exchanges heat with water sent by the high-temperature user end 3 through the high-temperature heat exchangers 5 to form medium-temperature water with the temperature of 50 ℃ and the temperature of 100t/h, and the medium-temperature water with the temperature of 50 ℃ and the temperature of 100t/h is sent to the low-temperature heat exchanger 11; meanwhile, low-temperature water at 45 ℃ and 762t/h sent by a high-temperature user end 3 exchanges heat with the high-temperature heat exchanger 5 to form high-temperature water at 60 ℃ and 762t/h for heat supply;
the medium temperature water with the temperature of 50 ℃ and the temperature of 100t/h sent by the high temperature heat exchanger 5 is sent to the low temperature heat exchanger 11 to exchange heat with the water at the low temperature user end 6 to form low temperature water with the temperature of 30-42 ℃ and the temperature of 300t/h to be refilled into the geothermal well 1; meanwhile, the low-temperature water at 35 ℃ and 241t/h sent by the low-temperature user side 6 exchanges heat with the low-temperature heat exchanger 11 to form water at 45 ℃ and 241t/h for heat supply;
when the weather is very cold, the boiler 2 is opened and the valve 4 is closed; at the moment, high-temperature water with the temperature of 69 ℃ and the temperature of 150t/h sent by the geothermal well 1 exchanges heat with water sent by a high-temperature user end 3 through a plurality of high-temperature heat exchangers 5 to form medium-temperature water with the temperature of 50 ℃ and the temperature of 100t/h, and the medium-temperature water with the temperature of 50 ℃ and the temperature of 100t/h is sent to a low-temperature heat exchanger 11; meanwhile, low-temperature water at 45 ℃ and 762t/h sent by a high-temperature user end 3 exchanges heat with the high-temperature heat exchanger 5 and then is sent into the boiler 2 to be heated to form high-temperature water at 60 ℃ and 762t/h for heat supply;
the medium temperature water with the temperature of 50 ℃ and the temperature of 100t/h sent by the high temperature heat exchanger 5 is sent to the low temperature heat exchanger 11 to exchange heat with the water at the low temperature user end 6 to form low temperature water with the temperature of 30-42 ℃ and the temperature of 300t/h to be refilled into the geothermal well 1; meanwhile, the low-temperature water at 35 ℃ and 241t/h sent by the low-temperature user side 6 exchanges heat with the low-temperature heat exchanger 11 to form water at 45 ℃ and 241t/h for heat supply.
The invention has the advantages that:
1. compared with the traditional natural gas boiler for heat supply, the system has higher flexibility, is corresponding through different demand sides, preferentially uses renewable energy sources for heat supply, and realizes energy conservation and environmental protection.
2. The natural gas boiler is used as a peak regulation heat source and is only used in a deep cooling period, so that the consumption of natural gas is greatly reduced, the operation and maintenance cost is reduced, and the energy conservation and the efficiency improvement are achieved.
3. By studying and judging the outdoor climate, the heat source is started in a targeted manner, so that the heat supply requirement can be met, and accurate heat supply can be realized.
4. By dividing the high-temperature water heating system and the low-temperature side heating system, the aim of heating according to needs is achieved, and the heating effect is guaranteed.
All valves related in the invention preferably adopt electronic valves, and all the electronic valves are respectively connected with a controller through lines.
It should be noted that, the electronic components according to the present invention are all conventionally known, and the above-mentioned components are electrically connected to a controller (model TC-SCR), and a control circuit between the controller and each component is conventionally known.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a geothermol power and complementary heating system of gas multipotency which characterized in that: the system comprises a geothermal well (1), a first heat exchange device, a boiler (2) and a high-temperature user end (3), wherein the geothermal well (1) and the first heat exchange device are communicated through a heat exchange pipeline to form a circulation loop, and a geothermal pump group is fixedly arranged on the heat exchange pipeline between the geothermal well (1) and an inlet of the first heat exchange device; the first heat exchange device is also communicated with the high-temperature user end (3) through a high-temperature heat supply pipeline to form a circulation loop, and a high-temperature circulation pump group is fixedly arranged on the high-temperature heat supply pipeline;
the inlet and the outlet of the boiler (2) are communicated with the water inlet of the high-temperature user end (3) and the high-temperature heat supply pipeline between the first heat exchange devices through pipelines respectively, and the water inlet of the high-temperature user end (3) and the pipeline between the first heat exchange devices correspond to the position between the inlet and the outlet of the boiler (2) and are fixedly provided with valves (4).
2. The geothermal and gas multi-energy complementary heating system according to claim 1, wherein: the first heat exchange device comprises at least one high-temperature heat exchanger (5), and each high-temperature heat exchanger (5) is provided with a first inlet and a first outlet which are communicated with each other, and a second inlet and a second outlet which are communicated with each other; the inlet I and the outlet I are respectively communicated with the geothermal well (1) through the heat exchange pipeline, the inlet II is communicated with a water outlet of the high-temperature user end (3) through the high-temperature heat supply pipeline, and the outlet II is communicated with a water inlet of the high-temperature user end (3) through the high-temperature heat supply pipeline.
3. A geothermal and gas multi-energy complementary heating system according to claim 2, wherein: the heat exchange device I comprises a plurality of high-temperature heat exchangers (5), and the high-temperature heat exchangers (5) are distributed in parallel.
4. A geothermal and gas multi-energy complementary heat supply system according to any one of claims 1 to 3, wherein: the system is characterized by further comprising a second heat exchange device and a low-temperature user side (6), wherein the second heat exchange device is arranged on the heat exchange pipeline between the outlet of the first heat exchange device and the geothermal well (1), and the second heat exchange device is communicated with the low-temperature user side (6) through a low-temperature heat supply pipeline to form a circulation loop; and a low-temperature circulating pump set is fixedly arranged on the low-temperature heat supply pipeline.
5. A geothermal and gas multi-energy complementary heating system according to claim 4, wherein: the second heat exchange device comprises a low-temperature heat exchanger (11), and a third inlet and a third outlet which are communicated with each other, and a fourth inlet and a fourth outlet which are communicated with each other are arranged on the low-temperature heat exchanger (11); the inlet III is communicated with the heat exchange device I through the heat exchange pipeline, and the outlet tee is communicated with the geothermal well (1) through the heat exchange pipeline; the inlet four-way pipe passes through the low-temperature heat supply pipeline and is communicated with a water outlet of the low-temperature user end (6), and the outlet four-way pipe passes through the low-temperature heat supply pipeline and is communicated with a water inlet of the low-temperature user end (6).
6. A geothermal and gas multi-energy complementary heating system according to claim 4, wherein: and a dirt remover (7) is fixedly arranged at the water outlet of the high-temperature user side (3) and/or the water outlet of the low-temperature user side (6) respectively.
7. A geothermal and gas multi-energy complementary heating system according to claim 4, wherein: and the high-temperature circulating pump group and/or the low-temperature circulating pump group are/is respectively connected with heat supply bypass pipelines (8) in parallel, and each heat supply bypass pipeline (8) is fixedly provided with a heat supply bypass valve.
8. A geothermal and gas multi-energy complementary heating system according to claim 4, wherein: the water replenishing device is communicated with the high-temperature heat supply pipeline between the first heat exchange device and the water outlet of the high-temperature user end (3) through a high-temperature water replenishing pipeline, and a high-temperature water replenishing pump set is fixedly installed on the high-temperature water replenishing pipeline;
the water supplementing device is also communicated with the low-temperature heat supply pipeline between the heat exchange device II and the water outlet of the low-temperature user end (6) through a low-temperature water supplementing pipeline, and a low-temperature water supplementing pump set is fixedly arranged on the low-temperature water supplementing pipeline; the water supplementing device is also communicated with the boiler (2) through a pipeline.
9. The geothermal and gas multi-energy complementary heating system according to claim 8, wherein: the water inlet of the water supplementing device is communicated with a water inlet pipeline, and a softener (9) is fixedly mounted on the water inlet pipeline.
10. A geothermal and gas multi-energy complementary heating system according to claim 9, wherein: softener (9) are parallelly connected with moisturizing bypass line (10), fixed mounting has the moisturizing bypass valve on moisturizing bypass line (10).
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