CN210123169U - Geothermal heating system combining step flash evaporation waste heat recovery with heat pump technology - Google Patents
Geothermal heating system combining step flash evaporation waste heat recovery with heat pump technology Download PDFInfo
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- CN210123169U CN210123169U CN201920281873.2U CN201920281873U CN210123169U CN 210123169 U CN210123169 U CN 210123169U CN 201920281873 U CN201920281873 U CN 201920281873U CN 210123169 U CN210123169 U CN 210123169U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The utility model relates to a step flash distillation waste heat recovery combines geothermal heating system of heat pump technique, including immersible pump, heating circulating water pump, still include one-level flash vessel, second grade flash vessel, the immersible pump export is connected with one-level flash vessel, and one-level flash vessel establishes ties with the second grade flash vessel, still includes one-level condenser, second grade condenser, and one-level flash vessel is connected with the one-level condenser, and the second grade flash vessel is connected with the second grade condenser, still includes the heat pump, and the heat pump is connected with the second grade condenser, and heating circulating water pump is connected with one-level condenser, heat pump respectively. Utilize step flash distillation and combine the heat pump technique to construct novel geothermal heating system, regard the heat that the second grade flash vessel was retrieved as the heat source of heat pump host computer to fully retrieve the heat in the geothermal water, heating system is influenced for a short time by the quality of water of geothermal water, avoids the serious scale deposit that geothermal mineralization degree hot water brought simultaneously.
Description
Technical Field
The utility model belongs to the technical field of new forms of energy development utilizes technique and specifically relates to a step flash distillation waste heat recovery combines geothermal heating system of heat pump technique.
Background
In the current middle-deep geothermal heating, most of the heating circulating water is directly heated by a plate heat exchanger and then is recharged to a recharging well. For example, chinese patent publication No. CN107270371A discloses a same-layer recharging electric heat pump type cascade heating system for geothermal heating, which mainly comprises a heat collecting circulation system and a heating circulation system, wherein the heat collecting circulation system mainly comprises a water collecting pump, a water collecting well, a plate heat exchanger, a first valve, a second valve, an electric heat pump, a recharging well, a third valve and a fourth valve, when the temperature of the geothermal water is higher than 40 ℃ during operation, the geothermal water directly enters the plate heat exchanger to exchange heat with heating backwater, and then enters an electric heat pump condenser to exchange heat, and the low-temperature geothermal water after heat exchange enters the recharging well to recharge.
However, the quality of geothermal water is complex, the geothermal water directly enters the heat exchanger to cause serious scaling of the heat exchanger and failure of the heat exchange effect of the heat exchanger, even corrode the heat exchanger, and meanwhile, most geothermal tail water used for recharging has high temperature, and energy waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a step flash distillation waste heat recovery combines geothermal heating system of heat pump technique in order to solve current geothermal heating and directly to cause the heat exchanger scale deposit serious, heat transfer effect inefficacy, corrode the heat exchanger even and recharge's the higher problem of geothermol power tail water temperature through the plate heat exchanger heating.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
a geothermal heating system combining step flash evaporation waste heat recovery with a heat pump technology comprises a submersible pump, a heating circulating water pump, a first-stage flash evaporator and a second-stage flash evaporator, wherein an outlet of the submersible pump is connected with a first geothermal water inlet of the first-stage flash evaporator, a first geothermal water outlet of the first-stage flash evaporator is connected with a second geothermal water inlet of the second-stage flash evaporator, the geothermal heating system further comprises a first-stage condenser and a second-stage condenser, a first steam outlet of the first-stage flash evaporator is connected with a first steam inlet of the first-stage condenser, a second steam outlet of the second-stage flash evaporator is connected with a second steam inlet of the second-stage condenser, the geothermal heating system further comprises a heat pump, an evaporator side outlet of the heat pump is connected with a second heating side inlet of the second-stage condenser, a second heating side outlet of the second-stage condenser is connected with an evaporator side inlet of the heat pump, the third heating side inlet of the heat pump is connected, and the first heating side outlet of the first-stage condenser and the third heating side outlet of the heat pump are both connected with a heating water supply pipeline.
Furthermore, a geothermal recharge pump is also arranged, and condensed water in the secondary flash evaporator, condensed water in the primary condenser and condensed water in the secondary condenser are converged and then enter the geothermal recharge pump.
Furthermore, a primary spray pump, a secondary spray pump, a primary vacuum pump and a secondary vacuum pump are further arranged, an inlet and an outlet of the primary spray pump are respectively connected with a first spray outlet and a first spray inlet of the primary flash evaporator, an inlet and an outlet of the secondary spray pump are respectively connected with a second spray outlet and a second spray inlet of the secondary flash evaporator, an inlet of the primary vacuum pump is connected with a first vacuumizing port of the primary condenser, and an inlet of the secondary vacuum pump is connected with a second vacuumizing port of the secondary condenser.
And further, a waste heat circulating water pump is further arranged, and an inlet and an outlet of the waste heat circulating water pump are respectively connected with an outlet on the evaporator side of the heat pump and an inlet on the second heating side of the secondary condenser.
Furthermore, the inlet of the submersible pump is connected with a geothermal water supply pipeline, the inlet of the heating circulating water pump is connected with a heating water return pipeline, and the outlet of the geothermal water return pump is connected with a geothermal tail water return pipeline.
Furthermore, the outlet of the primary spray pump is connected with a first spray pipeline, the first spray pipeline extends into the primary flash evaporator, the first spray pipeline in the primary flash evaporator is provided with an opening, the opening forms a spray head, the outlet of the secondary spray pump is connected with a second spray pipeline, the second spray pipeline extends into the secondary flash evaporator, the second spray pipeline in the secondary flash evaporator is provided with an opening, and the opening forms a spray head.
Further, the outlet of the primary vacuum pump and the outlet of the secondary vacuum pump are both connected with an air exhaust pipeline.
Further, the heat pump is single-stage or multi-stage.
Compared with the prior art, the beneficial effects of the utility model are that: utilize the step flash distillation and combine the heat pump technique to construct neotype geothermal heating system, regard the heat that the second grade flash vessel was retrieved as the heat source of heat pump host computer to fully retrieve the heat in the geothermal water, it is less simultaneously influenced by geothermal water's quality of water, avoid the condition emergence of the serious scale deposit that geothermal mineralization degree hot water brought and influence heat transfer effect, the system fortune dimension volume is little moreover, the reliability is high, can play energy-conservation, reduce the purpose of maintaining the work load and improving the operational reliability.
Drawings
Fig. 1 is the utility model relates to a step flash distillation waste heat recovery combines geothermal heating system's of heat pump technique work flow sketch.
In the figure, 1-submersible pump, 2-first stage flash evaporator, 21-first geothermal water inlet, 22-first geothermal water outlet, 23-first spray outlet, 24-first spray inlet, 25-first steam outlet, 3-first stage spray pump, 4-second stage flash evaporator, 41-second geothermal water inlet, 42-second geothermal water outlet, 43-second spray outlet, 44-second spray inlet, 45-second steam outlet, 5-second stage spray pump, 6-geothermal recharge pump, 7-first stage vacuum pump, 8-first stage condenser, 81-first steam inlet, 82-first condensed water outlet, 83-first vacuum pumping port, 84-first heating side inlet, 85-first heating side outlet, 9-second stage condenser, 91-a second steam inlet, 92-a second condensed water outlet, 93-a second vacuumizing port, 94-a second heating side inlet, 95-a second heating side outlet, 10-a secondary vacuum pump, 11-a waste heat circulating water pump, 12-a heat pump, 121-an evaporator side inlet, 122-an evaporator side outlet, 123-a third heating side inlet, 124-a third heating side outlet, 13-a heating circulating water pump, 14-a geothermal water supply pipeline, 15-a geothermal tail water return pipeline, 16-an air exhaust pipeline, 17-a heating water return pipeline, 18-a heating water supply pipeline, 19-a first spraying pipeline and 20-a second spraying pipeline.
Detailed Description
The technical solution of the present invention is further described and illustrated by the following specific embodiments.
As shown in fig. 1, a geothermal heating system combining a step flash evaporation waste heat recovery and a heat pump technology comprises a submersible pump 1, a heating circulating water pump 13, a primary flash evaporator 2, a secondary flash evaporator 4, a primary condenser 8, a secondary condenser 9 and a heat pump 12. An outlet of the submersible pump 1 is connected with a first geothermal water inlet 21 of the first-stage flash evaporator 2, and a first geothermal water outlet 22 of the first-stage flash evaporator 2 is connected with a second geothermal water inlet 41 of the second-stage flash evaporator 4. The first steam outlet 25 of the primary flash vessel 2 is connected to the first steam inlet 81 of the primary condenser 8. The second water vapor outlet 45 of the secondary flash evaporator 4 is connected to the second water vapor inlet 91 of the secondary condenser 9. The evaporator side outlet 122 of the heat pump 12 is connected to the second heating side inlet 94 of the secondary condenser 9, and the second heating side outlet 95 of the secondary condenser 9 is connected to the evaporator side inlet 121 of the heat pump 12. The outlet of the heating circulating water pump 13 is connected to the first heating side inlet 84 of the first-stage condenser 8 and the third heating side inlet 123 of the heat pump 12, and the first heating side outlet 85 of the first-stage condenser 8 and the third heating side outlet 124 of the heat pump 12 are both connected to the heating water supply pipeline 18.
The submersible pump 1, the primary flash evaporator 2, the secondary flash evaporator 4, the primary condenser 8 and the secondary condenser 9 are in geothermal side circulation. The secondary condenser 9 and the heat pump 12 are in intermediate circulation. And a heating side circulating system is formed by the heating circulating water pump 13, the primary condenser 8, the heat pump 12 and related pipelines. The heat in the geothermal water can be transmitted to the tail end heating system through the primary flash evaporator 2 and the primary condenser 8, and can be transmitted to the tail end heating system through the secondary flash evaporator 4, the secondary condenser 9 and the heat pump 12, so that the heating mode is flexible, and the heat in the geothermal water can be fully recovered.
In addition, the system is also provided with a geothermal recharge pump 6, a primary spray pump 3 and a secondary spray pump 5. The primary flash evaporator 2 is connected with the secondary flash evaporator 4 in series, the primary condenser 8 is connected with the secondary condenser 9 in parallel, and condensed water in the secondary flash evaporator 4, the condensed water in the primary condenser 8 and the condensed water in the secondary condenser 9 are converged and then enter the geothermal recharge pump 6, so that geothermal water after heat exchange can smoothly flow back to the geothermal well. The inlet and the outlet of the first-level spray pump 3 are respectively connected with the first spray outlet 23 and the first spray inlet 24 of the first-level flash evaporator 2, and the first-level spray pump 3 enables condensate water in the first-level flash evaporator 2 to continuously perform self-circulation, so that the evaporation effect is increased. The inlet and the outlet of the secondary spray pump 5 are respectively connected with the second spray outlet 43 and the second spray inlet 44 of the secondary flash evaporator 4, and the secondary spray pump 5 enables the condensate water in the secondary flash evaporator 4 to continuously perform self-circulation, so that the evaporation effect is increased.
The system is also provided with a primary vacuum pump 7, a secondary vacuum pump 10 and a waste heat circulating water pump 11. The inlet of the primary vacuum pump 7 is connected with the first vacuum-pumping port 83 of the primary condenser 8, and the primary vacuum pump 7 pumps out the non-condensable gas in the primary condenser 8. An inlet of the secondary vacuum pump 10 is connected with a second vacuum pumping port 93 of the secondary condenser 9, and the secondary vacuum pump 10 pumps out the non-condensable gas in the secondary condenser 9. The air passing through the outlet of the primary vacuum pump 7 is merged with the air passing through the outlet of the secondary vacuum pump 10 and then discharged. The inlet and the outlet of the waste heat circulating water pump 11 are respectively connected with the evaporator side outlet 122 of the heat pump 12 and the second heating side inlet 94 of the secondary condenser 9. The waste heat circulating water pump 11 uses the heat recovered by the secondary flash evaporator 4 as a heat source of the heat pump 12, thereby fully recovering the heat in the geothermal water.
An inlet of the submersible pump 1 is connected with a geothermal water supply pipeline 14, an inlet of the heating circulating water pump 13 is connected with a heating water return pipeline 17, and an outlet of the geothermal water return pump 6 is connected with a geothermal tail water return pipeline 15. The outlet of the primary spray pump 3 is connected with a first spray pipeline 19, the first spray pipeline 19 extends into the primary flash evaporator 2, and the first spray pipeline 19 in the primary flash evaporator 2 is provided with an opening which forms a spray head. The outlet of the secondary spray pump 5 is connected with a second spray pipeline 20, the second spray pipeline 20 extends into the secondary flash evaporator 4, the second spray pipeline 20 in the secondary flash evaporator 4 is provided with an opening, and the opening forms a spray head. After being sprayed out from the spray head, the hot water is sprayed from top to bottom. The outlet of the primary vacuum pump 7 and the outlet 10 of the secondary vacuum pump are both connected with an air exhaust pipeline 16, and air is exhausted from the air exhaust pipeline 16. The heat pump is single-stage or multi-stage, and meets the requirement of heat.
The working principle of the embodiment is as follows: geothermal water enters the primary flash evaporator 2 from a geothermal water supply pipeline 14 through a submersible pump 1 and a first geothermal water inlet 21. The primary vacuum pump 7 vacuumizes the primary flash evaporator 2, geothermal water entering the primary flash evaporator 2 is quickly vaporized into steam, and the steam enters the primary condenser 8 through the first steam outlet 25 and the first steam inlet 81 in sequence. In the first-stage condenser 8, the heating circulating medium flows in the water pipe, and the steam flows out of the water pipe, so that the steam and the heating circulating medium perform indirect heat exchange. The heat released by the steam is absorbed by the heating circulation medium, and the heating circulation medium is sent to the relevant heating area through the heating water supply pipeline 18 after the temperature of the heating circulation medium is raised. The geothermal steam after releasing heat is changed into condensed water and discharged from the first condensed water outlet 82, a part of condensed water is also generated in the primary flash evaporator 2, and the condensed water flows out of the first geothermal water outlet 22 and then enters the secondary flash evaporator 4. The secondary vacuum pump 10 vacuumizes the secondary flash evaporator 4, geothermal water entering the secondary flash evaporator 4 is rapidly vaporized into steam, the steam in the secondary flash evaporator 4 sequentially enters the secondary condenser 9 through the second steam outlet 45 and the second steam inlet 91, the steam releases heat and is condensed in the secondary condenser 9, and the released heat is transferred to the evaporator of the heat pump 12. The heating backwater enters the condenser of the heat pump 9 through a heating backwater pipeline 17, absorbs heat released by the evaporator of the heat pump 9, and is sent to a related heating area through a heating water supply pipeline 18 after the temperature of the heating water rises. The condensed water of the secondary condenser 9 is discharged to the geothermal recharge pump 6 through a second condensed water outlet 92. Part of the condensed water in the secondary flash evaporator 4 is discharged to the geothermal recharge pump 6 through the second geothermal water outlet 42.
The embodiment utilizes the step flash distillation and combines the heat pump technique to construct neotype geothermal heating system, the heat of retrieving the second grade flash vessel as the heat source of heat pump host computer to fully retrieve the heat in the geothermal water, it is less influenced by geothermal water's quality of water simultaneously, avoid the serious scale deposit that geothermal mineralization degree hot water brought and influence the condition of heat transfer effect and take place, the system fortune dimension volume is little moreover, the reliability is high, can play energy-conservation, reduce the purpose of maintaining work load and improving operational reliability.
The embodiments of the present invention have been described in detail, and those skilled in the art can easily understand that there are various changes in the embodiments according to the idea of the present invention, and such changes should be considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a step flash distillation waste heat recovery combines geothermal heating system of heat pump technique, includes immersible pump (1), heating circulating water pump (13), its characterized in that:
the device also comprises a primary flash evaporator (2) and a secondary flash evaporator (4), wherein an outlet of the submersible pump (1) is connected with a first geothermal water inlet (21) of the primary flash evaporator (2), and a first geothermal water outlet (22) of the primary flash evaporator (2) is connected with a second geothermal water inlet (41) of the secondary flash evaporator (4);
the device also comprises a primary condenser (8) and a secondary condenser (9), wherein a first steam outlet (25) of the primary flash evaporator (2) is connected with a first steam inlet (81) of the primary condenser (8); a second steam outlet (45) of the secondary flash evaporator (4) is connected with a second steam inlet (91) of the secondary condenser (9);
the heat pump (12) is further included, an evaporator side outlet (122) of the heat pump (12) is connected with a second heating side inlet (94) of the secondary condenser (9), and a second heating side outlet (95) of the secondary condenser (9) is connected with an evaporator side inlet (121) of the heat pump (12);
the outlet of the heating circulating water pump (13) is respectively connected with the first heating side inlet (84) of the first-stage condenser (8) and the third heating side inlet (123) of the heat pump (12), and the first heating side outlet (85) of the first-stage condenser (8) and the third heating side outlet (124) of the heat pump (12) are both connected with a heating water supply pipeline (18).
2. The geothermal heating system combining the step flash evaporation waste heat recovery and the heat pump technology according to claim 1, characterized in that: and a geothermal reinjection pump (6) is further arranged, and condensed water in the secondary flash evaporator (4), condensed water in the primary condenser (8) and condensed water in the secondary condenser (9) are converged and then enter the geothermal reinjection pump (6).
3. The geothermal heating system combining the step flash evaporation waste heat recovery and the heat pump technology according to claim 1, characterized in that: a primary spray pump (3), a secondary spray pump (5), a primary vacuum pump (7) and a secondary vacuum pump (10) are also arranged; the inlet and the outlet of the primary spray pump (3) are respectively connected with the first spray outlet (23) and the first spray inlet (24) of the primary flash evaporator (2), and the inlet and the outlet of the secondary spray pump (5) are respectively connected with the second spray outlet (43) and the second spray inlet (44) of the secondary flash evaporator (4); the inlet of the primary vacuum pump (7) is connected with a first vacuumizing port (83) of the primary condenser (8), and the inlet of the secondary vacuum pump (10) is connected with a second vacuumizing port (93) of the secondary condenser (9).
4. The geothermal heating system combining the step flash evaporation waste heat recovery and the heat pump technology according to claim 1, characterized in that: and a waste heat circulating water pump (11) is also arranged, and an inlet and an outlet of the waste heat circulating water pump (11) are respectively connected with an evaporator side outlet (122) of the heat pump (12) and a second heating side inlet (94) of the secondary condenser (9).
5. The geothermal heating system combining the step flash evaporation waste heat recovery and the heat pump technology according to claim 2, characterized in that: the inlet of the submersible pump (1) is connected with a geothermal water supply pipeline (14), the inlet of the heating circulating water pump (13) is connected with a heating water return pipeline (17), and the outlet of the geothermal water return pump (6) is connected with a geothermal tail water return pipeline (15).
6. The geothermal heating system combining the step flash evaporation waste heat recovery and the heat pump technology according to claim 3, characterized in that:
an outlet of the primary spray pump (3) is connected with a first spray pipeline (19), the first spray pipeline (19) extends into the primary flash evaporator (2), the first spray pipeline (19) in the primary flash evaporator (2) is provided with an opening, and the opening forms a spray head;
the outlet of the secondary spray pump (5) is connected with a second spray pipeline (20), the second spray pipeline (20) extends into the secondary flash evaporator (4), the second spray pipeline (20) in the secondary flash evaporator (4) is provided with an opening, and the opening forms a spray head.
7. The geothermal heating system combining the step flash evaporation waste heat recovery and the heat pump technology according to claim 3, characterized in that: and the outlet of the primary vacuum pump (7) and the outlet of the secondary vacuum pump (10) are both connected with an air exhaust pipeline (16).
8. The geothermal heating system combining the step flash evaporation waste heat recovery and the heat pump technology according to any one of claims 1 to 7, characterized in that: the heat pump is single-stage or multi-stage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920281873.2U CN210123169U (en) | 2019-03-06 | 2019-03-06 | Geothermal heating system combining step flash evaporation waste heat recovery with heat pump technology |
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| CN201920281873.2U CN210123169U (en) | 2019-03-06 | 2019-03-06 | Geothermal heating system combining step flash evaporation waste heat recovery with heat pump technology |
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| CN210123169U true CN210123169U (en) | 2020-03-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855152A (en) * | 2019-03-06 | 2019-06-07 | 中核坤华能源发展有限公司 | A kind of step flash distillation waste heat recycling combines the geothermal heating system of heat pump techniques |
-
2019
- 2019-03-06 CN CN201920281873.2U patent/CN210123169U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855152A (en) * | 2019-03-06 | 2019-06-07 | 中核坤华能源发展有限公司 | A kind of step flash distillation waste heat recycling combines the geothermal heating system of heat pump techniques |
| CN109855152B (en) * | 2019-03-06 | 2023-12-29 | 中核坤华能源发展有限公司 | Geothermal heating system combining cascade flash evaporation waste heat recovery with heat pump technology |
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