CN220169526U - Middle-deep geothermal energy high-energy-efficiency heating and heat exchanging system - Google Patents
Middle-deep geothermal energy high-energy-efficiency heating and heat exchanging system Download PDFInfo
- Publication number
- CN220169526U CN220169526U CN202321695692.7U CN202321695692U CN220169526U CN 220169526 U CN220169526 U CN 220169526U CN 202321695692 U CN202321695692 U CN 202321695692U CN 220169526 U CN220169526 U CN 220169526U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- water
- pipe
- heating
- lithium bromide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 42
- 239000008236 heating water Substances 0.000 claims abstract description 22
- 239000004576 sand Substances 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model belongs to the field of medium-deep geothermal heating, and relates to a medium-deep geothermal energy high-energy-efficiency heating heat exchange system which comprises a high-temperature steam pipe, a heating water supply pipe, a heating water return pipe, a geothermal primary heat exchanger, a steam-water heat exchanger, a lithium bromide unit, a exploitation well and a recharging well, wherein the exploitation well and the recharging well are respectively connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the geothermal primary heat exchanger, the geothermal primary heat exchanger is connected with a secondary heat exchanger, the secondary heat exchanger is connected with the water outlet pipe, the secondary heat exchanger is connected with the lithium bromide unit through a lithium bromide unit circulating pump, the high-temperature steam pipe is connected with the steam-water heat exchanger and the lithium bromide unit, and the steam-water heat exchanger, the geothermal primary heat exchanger and the lithium bromide unit are connected with the heating water supply pipe and the heating water return pipe. The utility model utilizes high-temperature steam to drive the lithium bromide unit, consumes little electric energy without consuming heat energy, and the tail water can continuously reduce the temperature of the tail water through the electric heat pump, thereby improving the utilization rate of the deep geothermal well.
Description
Technical Field
The utility model belongs to the field of middle-deep geothermal heating, and relates to a middle-deep geothermal energy high-energy-efficiency heating and heat exchanging system.
Background
The geothermal energy is natural thermal energy extracted from the crust, the thermal energy comes from lava in the earth and exists in a thermal form, and because the geothermal energy is clean, pollution-free, environment-friendly and the like, technicians often adopt a heat pump technology to exploit and utilize the geothermal energy of the shallow surface layer, and utilize the hydrothermal geothermal energy of the middle and deep layer through a natural channel or artificial drilling. The prior middle-deep geothermal well is mainly applied to two conditions, namely, the first condition is that heat exchange is directly carried out with a tail end heat exchange system to provide a heat source for the tail end, the second condition is that cascade utilization of a heat pump unit is increased, tail water after primary heat exchange is used as a source end of an electric heat pump, and high-temperature hot water is continuously provided. Chinese patent CN217154307U discloses a deep geothermal energy integrated heating system in application, which comprises a geothermal well unit, a primary plate heat exchange unit for heat exchange, an absorption heat pump heat exchange unit for heat exchange, and a compression heat pump heat exchange unit for heat exchange, wherein the primary plate heat exchange unit for heat exchange, the absorption heat pump heat exchange unit for heat exchange, and the compression heat pump heat exchange unit for heat exchange are all used for heat exchange of low-temperature water in a heating return pipeline and then are sent into a heating water supply pipeline; the geothermal well unit is communicated with a hot outlet pipe and a cold return pipe, the geothermal well unit is communicated with an inlet of the pretreatment unit through the hot outlet pipe, an outlet of the pretreatment unit is communicated with a first-stage plate heat exchange unit through a first-stage inlet pipe for heat exchange, and after the heat exchange is completed, tail water is respectively led into the absorption heat pump heat exchange unit for heat exchange and the compression heat pump heat exchange unit for heat exchange for secondary heat exchange.
The prior art has the following technical defects:
the heat exchange is directly carried out with the tail end heat exchange system, a heat source is provided for the tail end, the geothermal tail water cannot be reduced too low, so that the geothermal tail water cannot be fully utilized, the cascade utilization of a heat pump unit is increased, the tail water after primary heat exchange is used as the source end of an electric heat pump, high-temperature hot water is continuously provided, the hot water exchanged by low Wen Weishui is provided with high-temperature circulating water through the electric heat pump, and more electric energy is required to be consumed for heat energy transfer of the heat pump unit. The technical scheme is suitable for the heating pipe network, the energy heat exchange station between the community secondary heat exchange station and the geothermal well unit, cannot be applied to a heating system in a power plant, cannot reasonably utilize the energy of high-temperature steam of the power plant, and causes energy waste when high-temperature hot water is used for heat exchange.
Disclosure of Invention
The utility model aims to solve the technical problems that: overcomes the defects of the prior art and provides a medium-deep geothermal energy high-energy-efficiency heating and heat exchanging system.
The utility model discloses a medium-deep geothermal energy high-energy-efficiency heating heat exchange system, which comprises a high-temperature steam pipe, a heating water supply pipe, a heating water return pipe, a geothermal primary heat exchanger, a steam-water heat exchanger, a lithium bromide unit, a exploitation well and a recharging well, wherein the exploitation well and the recharging well are respectively connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with the geothermal primary heat exchanger, the geothermal primary heat exchanger is connected with a secondary heat exchanger, the secondary heat exchanger is connected with the water outlet pipe, the secondary heat exchanger is connected with the lithium bromide unit through a lithium bromide unit circulating pump, the high-temperature steam pipe is connected with the steam-water heat exchanger and the lithium bromide unit, and the steam-water heat exchanger, the geothermal primary heat exchanger and the lithium bromide unit are all connected with the heating water supply pipe and the heating water return pipe.
Working process or working principle:
during operation, the geothermal water with higher temperature passes through the geothermal primary heat exchanger, the high-temperature circulating water is directly fed into the heating water supply pipe, the tail water after primary heat exchange is subjected to heat exchange through the secondary heat exchanger, the intermediate circulating water is provided for the lithium bromide unit, the high-temperature steam is directly fed into the heating water supply pipe after the high-temperature circulating water is exchanged through the steam-water heat exchanger, meanwhile, the high-temperature steam enters the lithium bromide unit, the lithium bromide unit is driven to carry out secondary extraction of energy through the high-temperature steam, the energy conversion of the section only has the self-running power consumption of the lithium bromide heat pump unit, and the heat of the high-temperature steam can enter the system together.
The water inlet pipe is connected with a rotational flow sand remover and a steam-water separator.
The secondary heat exchanger is connected with the water outlet pipe through the tertiary heat exchanger, the tertiary heat exchanger is connected with an electric heat pump through an electric heat pump circulating pump, the electric heat pump is connected with a heating water supply pipe and a heating return pipe, and tail water is subjected to heat exchange through the electric heat pump after two-stage heat exchange.
The water inlet pipe is directly connected with the secondary heat exchanger in one path, exchanges heat through the secondary heat exchanger, directly supplies geothermal water to the lithium bromide unit, and enters an evaporator of the lithium bromide unit for heat exchange.
The water outlet pipe is connected with a coarse filter and a fine filter.
The water outlet pipe is connected with the coarse filter and the fine filter in parallel and is provided with a water outlet branch pipe, so that the system pressure is prevented from being pressed when the coarse filter and the fine filter are blocked.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model is suitable for the heating environment of the power plant, and the lithium bromide unit is driven by utilizing the high-temperature steam generated by the power plant, so that the heat energy is not consumed, only little electric energy is consumed, and only the electric energy required by the operation of the heat pump unit is consumed. The tail water after the cascade utilization of the lithium bromide unit can continuously reduce the temperature of the tail water through the electric heat pump, and the utilization rate of the deep geothermal well is improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
In the figure: 1. a production well; 2. a cyclone desander; 3. a steam-water separator; 4. a water inlet pipe; 5. a high temperature steam pipe; 6. a steam-water heat exchanger; 7. a heating water supply pipe; 8. a geothermal primary heat exchanger; 9. a lithium bromide unit; 10. a heating return pipe; 11. an electric heat pump; 12. a lithium bromide unit circulating pump; 13. an electric heat pump circulation pump; 14. a secondary heat exchanger; 15. a three-stage heat exchanger; 16. a water outlet branch pipe; 17. a fine filter; 18. a coarse filter; 19. a water outlet pipe; 20. recharging the well.
Detailed Description
Example 1
As shown in fig. 1, the medium-deep geothermal energy high-energy-efficiency heating heat exchange system comprises a high-temperature steam pipe 5, a heating water supply pipe 7, a heating water return pipe 10, a geothermal primary heat exchanger 8, a steam-water heat exchanger 6, a lithium bromide unit 9, a exploitation well 1 and a recharging well 20, wherein the exploitation well 1 and the recharging well 20 are respectively connected with a water inlet pipe 4 and a water outlet pipe 19, the water inlet pipe 4 is connected with the geothermal primary heat exchanger 8, the geothermal primary heat exchanger 8 is connected with a secondary heat exchanger 14, the secondary heat exchanger 14 is connected with the water outlet pipe 19, the secondary heat exchanger 14 is connected with the lithium bromide unit 9 through a lithium bromide unit circulating pump 12, the high-temperature steam pipe 5 is connected with the steam-water heat exchanger 6 and the lithium bromide unit 9, and the steam-water heat exchanger 6, the geothermal primary heat exchanger 8 and the lithium bromide unit 9 are connected with the heating water supply pipe 7 and the heating water return pipe 10; the water inlet pipe 4 is connected with a rotational flow sand remover 2 and a steam-water separator 3; the secondary heat exchanger 14 is connected with the water outlet pipe 19 through the tertiary heat exchanger 15, the tertiary heat exchanger 15 is connected with the electric heating pump 11 through the electric heating pump circulating pump 13, the electric heating pump 11 is connected with the heating water supply pipe 7 and the heating water return pipe 10, and the tail water exchanges heat through the electric heating pump 11 after two-stage heat exchange; the water inlet pipe 4 is directly connected with the secondary heat exchanger 14 in one path, exchanges heat through the secondary heat exchanger 14, directly supplies geothermal water to the lithium bromide unit 9, and enters an evaporator of the lithium bromide unit 9 for heat exchange; the water outlet pipe 19 is connected with a coarse filter 18 and a fine filter 17; the water outlet pipe 19 is connected with the coarse filter 18 and the fine filter 17 in parallel with the water outlet branch pipe 16, so that the system pressure is prevented from being suppressed when the coarse filter 18 and the fine filter 17 are blocked.
Working process or working principle:
during operation, the geothermal water with higher temperature is directly supplied to the heating water supply pipe 7 through the geothermal primary heat exchanger 8, the high-temperature circulating water is exchanged, the tail water after primary heat exchange is subjected to heat exchange through the secondary heat exchanger 14, intermediate circulating water is provided for the lithium bromide unit 9, high-temperature steam directly enters the lithium bromide unit 9, the lithium bromide unit 9 is driven by the high-temperature steam to carry out secondary extraction of energy, the energy conversion of the section only has the self-running power consumption of the lithium bromide heat pump unit, the heat of the high-temperature steam can be supplied to the system together, the consumption of electric energy is reduced, the tail water after the lithium bromide unit 9 is used is subjected to heat exchange with the electric heat pump 11 unit again to be supplied to the tail end system, and meanwhile, the high-temperature steam also enters the steam-water heat exchanger 6 through the high-temperature steam pipe 5 to be exchanged out of the high-temperature circulating water and is directly supplied to the heating water supply pipe 7.
The utility model is suitable for the heating environment of the power plant, and the lithium bromide unit 9 is driven by utilizing the high-temperature steam generated by the power plant, so that the heat energy is not consumed, only little electric energy is consumed, and only the electric energy required by the operation of the heat pump unit is consumed. The tail water after the cascade utilization of the lithium bromide unit 9 can continuously reduce the temperature of the tail water through the electric heat pump 11, and the utilization rate of the deep geothermal well is improved.
The description of the directions and the relative positional relationships of the structures, such as the description of the front, back, left, right, up and down, in the present utility model does not limit the present utility model, but is merely for convenience of description.
Claims (6)
1. A medium-deep geothermal energy high-energy-efficiency heating and heat exchanging system is characterized in that: including high temperature steam pipe (5), heating delivery pipe (7), heating return pipe (10), geothermal primary heat exchanger (8), catch water heat exchanger (6), lithium bromide unit (9), exploitation well (1) and recharging well (20) are connected with inlet tube (4) and outlet pipe (19) respectively, inlet tube (4) link to each other with geothermal primary heat exchanger (8), geothermal primary heat exchanger (8) are connected with second grade heat exchanger (14), second grade heat exchanger (14) link to each other with outlet pipe (19), second grade heat exchanger (14) link to each other with lithium bromide unit (9) through lithium bromide unit circulating pump (12), high temperature steam pipe (5) link to each other with catch water heat exchanger (6) and lithium bromide unit (9), catch water heat exchanger (6), geothermal primary heat exchanger (8) and lithium bromide unit (9) all link to each other with heating delivery pipe (7) and heating return pipe (10).
2. The medium-deep geothermal energy efficient heating and heat exchanging system according to claim 1, wherein: the water inlet pipe (4) is connected with a rotational flow sand remover (2) and a steam-water separator (3).
3. The medium-deep geothermal energy efficient heating and heat exchanging system according to claim 1, wherein: the secondary heat exchanger (14) is connected with the water outlet pipe (19) through the tertiary heat exchanger (15), the tertiary heat exchanger (15) is connected with the electric heat pump (11) through the electric heat pump circulating pump (13), and the electric heat pump (11) is connected with the heating water supply pipe (7) and the heating return pipe (10).
4. A mid-deep geothermal energy efficient heating heat exchange system as defined in claim 3, wherein: the water inlet pipe (4) is directly connected with the secondary heat exchanger (14) in one path.
5. The medium-deep geothermal energy efficient heating and heat exchanging system according to any one of claims 1 to 4, wherein: the water outlet pipe (19) is connected with a coarse filter (18) and a fine filter (17).
6. The medium-deep geothermal energy efficient heating and heat exchanging system according to claim 5, wherein: the water outlet pipe (19) is connected with the coarse filter (18) and the fine filter (17) in parallel with a water outlet branch pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321695692.7U CN220169526U (en) | 2023-06-30 | 2023-06-30 | Middle-deep geothermal energy high-energy-efficiency heating and heat exchanging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321695692.7U CN220169526U (en) | 2023-06-30 | 2023-06-30 | Middle-deep geothermal energy high-energy-efficiency heating and heat exchanging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220169526U true CN220169526U (en) | 2023-12-12 |
Family
ID=89062942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321695692.7U Active CN220169526U (en) | 2023-06-30 | 2023-06-30 | Middle-deep geothermal energy high-energy-efficiency heating and heat exchanging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220169526U (en) |
-
2023
- 2023-06-30 CN CN202321695692.7U patent/CN220169526U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106705185A (en) | Energy-saving heat supply system with function of reducing temperature of heat supply return water | |
| CN109579108B (en) | High-backpressure coupling large-temperature-difference heating system for air cooling unit and operation method | |
| CN106765448A (en) | A kind of energy-saving heating system for reducing heat supply return water temperature | |
| CN108035776B (en) | Thermoelectric decoupling system and operation method | |
| CN201062838Y (en) | Central heating system for thermoelectric plant circulating water | |
| CN105443170A (en) | High-and-low-temperature supercritical carbon dioxide waste heat utilization system | |
| CN103673031A (en) | System capable of greatly lowering combined heat and power generation centralized heating temperature | |
| CN114413311B (en) | Cold end waste heat supply system of coal-fired unit of coupling oblique temperature layer heat storage tank and operation method | |
| CN108487952A (en) | A kind of steam high-grade energy-recuperation system and working method for realizing annual operation | |
| CN113237134B (en) | Geothermal energy central heating system based on electric heat pump unit | |
| CN201007231Y (en) | Mine total energy approach device of coal mine mash gas engines | |
| CN203809224U (en) | Solar photothermal power generation comprehensive utilizing system | |
| CN103629724A (en) | System for greatly reducing district heating temperature by cogeneration | |
| CN202869080U (en) | Device for recovering low-pressure steam and cooling water waste heat of waste heat power generation system | |
| CN220169526U (en) | Middle-deep geothermal energy high-energy-efficiency heating and heat exchanging system | |
| CN209877073U (en) | Heating device for comprehensive application of screw expander and heat pump | |
| CN201138011Y (en) | Renewable power source heating apparatus of cooling column recycled water at low position of thermal power plant and refrigeration enterprise | |
| CN214664757U (en) | Utilize geothermal energy and water source heat pump energy coupling heating system | |
| CN210320249U (en) | High-power large-temperature-difference thermal utilization unit device for water-heat well | |
| CN210829421U (en) | Supercritical carbon dioxide power generation system combining supercritical water oxidation technology | |
| CN112762636A (en) | Integrated heat pump unit driven by high-parameter steam in efficient utilization mode | |
| CN113375210A (en) | Cold end waste heat supply method and system of coupling absorption heat pump | |
| CN207815777U (en) | A kind of cogeneration cooling heating system using industrial steam | |
| CN218721791U (en) | Compound central heating system for efficiently recycling waste heat of urban reclaimed water | |
| CN214406203U (en) | High-efficiency wide-load heating system based on low-pressure steam injection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |