CN213335020U - Flash evaporation step geothermal utilization system - Google Patents
Flash evaporation step geothermal utilization system Download PDFInfo
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- CN213335020U CN213335020U CN202022045856.4U CN202022045856U CN213335020U CN 213335020 U CN213335020 U CN 213335020U CN 202022045856 U CN202022045856 U CN 202022045856U CN 213335020 U CN213335020 U CN 213335020U
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- Prior art keywords
- geothermal
- flash
- water
- evaporator
- heat exchanger
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- 238000001704 evaporation Methods 0.000 title claims abstract description 9
- 230000008020 evaporation Effects 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000008236 heating water Substances 0.000 claims abstract description 10
- 238000007701 flash-distillation Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000003973 irrigation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model relates to a flash evaporation step geothermal utilization system, which comprises a geothermal well, a first flash evaporator, a second flash evaporator, a heat exchanger and a heat pump unit, wherein a geothermal water supply pipe is connected with a water inlet of the first flash evaporator, and the geothermal water supply pipe is provided with a submersible pump, the water outlet of the first flash evaporator is connected with the water inlet of the second flash evaporator, the steam outlets of the first flash evaporator and the second flash evaporator are converged and then connected with the shell pass inlet of the heat exchanger, the shell pass outlet of the heat exchanger is connected with the evaporator side inlet of the heat pump unit, the evaporator side outlet of the heat pump unit and the water outlet of the second flash evaporator are connected with a recharge pipeline, the recharge pipeline is provided with a recharge pump, the recharge pipeline is connected to the geothermal well, the tube pass inlet of the heat exchanger and the condenser side inlet of the heat pump unit are connected with a heating water return pipeline, the heating water return pipeline is provided with a circulating pump, and the tube pass outlet of the heat exchanger and the condenser outlet. The utility model discloses heat utilization rate is high.
Description
Technical Field
The utility model relates to a geothermal heating technical field especially relates to a flash distillation step geothermal utilization system.
Background
The geothermal resource is a clean and recyclable energy source, the geothermal resource can be applied to a stratum with a very high temperature, and the temperature of the stratum in the region of 2000m can reach more than 60 ℃ even in a region without hot springs according to the general geothermal gradient of 3 ℃/100m, so that the application requirement of the geothermal resource can be completely met.
China is a country with abundant geothermal resource reserves, the total amount of the geothermal resource reserves is equivalent to 18.54 hundred million tons of standard coal, the total amount of hot water in a basin in North China is 9 hundred million tons, which is equivalent to about 50 percent of the whole country, but China is far from insufficient in utilization of geothermal resources, the geothermal resources are urgently needed to be vigorously developed, particularly for northern areas, the coal consumption of each large city is greatly increased due to winter heating, the body health of people is greatly influenced by the accompanying environmental pollution phenomena such as haze and the like, if geothermal resources generated by the formation temperature can be fully utilized in vast cities, the consumption of coal resources can be reduced, the improvement of the environment can be greatly promoted, and the high social and economic values are achieved.
The geothermal utilization system that has now, by geothermal well water intaking, directly get into heat pump set or get into heat pump set after through the heat exchanger heat transfer and acquire geothermal energy, the water after the heat transfer is irritated back and is irritated well, and this kind of geothermal system has some defects: 1. a recharging well needs to be constructed, so that the construction cost is high; 2. The produced geothermal water often carries silt, which is easy to cause the blockage of pipelines or heat exchangers or heat pump units; and the quality of geothermal water is relatively complex, and the direct entering of the geothermal water into the heat exchanger or the heat pump unit can cause the heat exchanger or the heat pump unit to scale seriously and cause the low heat exchange effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a flash distillation step geothermal utilization system that heat utilization rate is high, can not cause heat exchanger and/or heat pump set to block up.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a flash distillation step geothermal utilization system, flash distillation step geothermal utilization system includes geothermal well, first flash vessel, second flash vessel, heat exchanger and heat pump set, geothermal water supply pipe connection the water inlet of first flash vessel, and be equipped with the immersible pump on the geothermal water supply pipe, the water inlet of second flash vessel is connected to the delivery port of first flash vessel, the shell side import of heat exchanger is connected after the steam outlet of first flash vessel and second flash vessel gathers, the shell side export of heat exchanger is connected the evaporimeter side import of heat pump set, the evaporimeter side export of heat pump set and the delivery port of second flash vessel all connect the recharge pipeline, be equipped with the recharge pump on the recharge pipeline, the recharge pipeline is connected to geothermal well, the pipe side import of heat exchanger and the condenser side import of heat pump set all connect the heating pipeline, and a circulating pump is arranged on the heating water return pipeline, and a pipe pass outlet of the heat exchanger and a condenser outlet of the heat pump unit are both connected with a heating water supply pipeline.
In a preferred embodiment of the flash evaporation step geothermal utilization system provided by the present invention, the geothermal water supply pipe is further provided with a desander.
The utility model provides a flash distillation step geothermol power utilization system's a preferred embodiment, the geothermal well is equipped with oblique decurrent infiltration hole in one side above the liquid level, the recharge pipeline inserts in the infiltration hole returns.
The utility model provides a flash distillation step geothermal utilization system's a preferred embodiment, the delivery port of first flash vessel still connects the delivery port of second flash vessel, and is equipped with first valve on this connecting tube, be equipped with the second valve on the delivery port of first flash vessel and the connecting tube of the water inlet of second flash vessel.
Compared with the prior art, the utility model provides a flash distillation step geothermol power utilization system's beneficial effect is:
the utility model discloses utilize two flash vessel to flash geothermal water into steam, realize the utilization of geothermal energy through the heat transfer to steam, reduced geothermal water quality to the influence of heat exchanger and heat pump set, heat exchange efficiency also shows simultaneously and promotes, regard water after the heat transfer as the heat source of heat pump set, improved heat utilization rate, realized step geothermal utilization;
secondly, the sand remover is arranged to remove impurities such as fine sand carried in the geothermal water;
and thirdly, the recharge holes arranged in the geothermal well are used as the recharge of the recharge pipeline, so that the recharged geothermal water is recharged in the geothermal well, the water circulation of the geothermal water is facilitated, the recharge well does not need to be constructed, and the construction cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural diagram of a flash evaporation step geothermal utilization system provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1, the flash evaporation cascade geothermal utilization system 1 provided in this embodiment includes a geothermal well 101, a first flash evaporator 103, a second flash evaporator 104, a heat exchanger 105, and a heat pump unit 106.
The geothermal water supply pipe 100 is connected to the water inlet of the first flash evaporator 103, the submersible pump 20 is arranged on the geothermal water supply pipe 100, the geothermal water in the geothermal well is pumped into the first flash evaporator by the submersible pump, and in order to solve the problem that the geothermal water contains impurities such as fine sand, the sand remover 102 is preferably arranged on the geothermal water supply pipe 100 in the embodiment and used for removing the impurities in the geothermal water and preventing the impurities from blocking the pipeline.
In this embodiment, a water outlet of the first flash evaporator 103 is connected to a water inlet of the second flash evaporator 104, and steam outlets of the first flash evaporator 103 and the second flash evaporator 104 are connected to a shell side inlet of the heat exchanger 105 after being collected. The steam that goes out geothermal water flash distillation through first flash vessel and second flash vessel is as the heat source of heat exchanger, reduces the influence (jam or corruption) that geothermal water's quality of water caused heat exchanger and/heat pump set, utilizes steam to carry out the heat transfer simultaneously, and heat exchange efficiency also shows the promotion.
In this embodiment, a shell pass outlet of the heat exchanger 105 is connected to an evaporator side inlet of the heat pump unit 106, an evaporator side outlet of the heat pump unit 106 and a water outlet of the second flash evaporator 104 are both connected to a recharge pipeline 200, a recharge pump 30 is arranged on the recharge pipeline 200, and the recharge pipeline 200 is connected to the geothermal well 101. The heat source of the heat pump unit is steam condensate or residual steam after heat exchange of the heat exchanger, so that the heat energy of geothermal water is further utilized, and the heat energy utilization rate is improved.
The pipe side inlet of the heat exchanger 105 and the condenser side inlet of the heat pump unit 106 are both connected with a heating water return pipe 300, a circulating pump 40 is arranged on the heating water return pipe 300, and the pipe side outlet of the heat exchanger 105 and the condenser outlet of the heat pump unit 106 are both connected with a heating water supply pipe 400. The water after heat exchange of the heat exchanger and the water after heat exchange of the heat pump unit are used for domestic heating, and the return water after the domestic heating continues to exchange heat, so that circulation of heating water is realized.
Example two
On the basis of the first embodiment, the geothermal well 101 of this embodiment is provided with the downward-inclined return-osmosis hole 1010 on one side above the liquid level, the return-irrigation pipe 200 is inserted into the return-osmosis hole 1010, so that the returned geothermal water directly infiltrates into the geothermal well through the return-osmosis hole, the circulation of water resources in the geothermal well is realized, the low-temperature return-irrigation water is prevented from directly mixing with the hot water in the geothermal well, the heat energy of the hot water in the geothermal well is directly reduced, and meanwhile, the design does not need to additionally construct the return-irrigation well, and the construction cost is reduced.
EXAMPLE III
On the basis of the first embodiment or the second embodiment, the water outlet of the first flash evaporator 103 of this embodiment is further connected to the water outlet of the second flash evaporator 104, and the connecting pipeline is provided with a first valve 50, and the connecting pipeline between the water outlet of the first flash evaporator 103 and the water inlet of the second flash evaporator 104 is provided with a second valve 60.
When in specific use: when the temperature of water in the geothermal well was on the low side, can close the second valve, opened first valve for discharged water directly transmits to the geothermal well in the first flash vessel, when the temperature of water in the geothermal well was on the high side, then closed first valve, opened the second valve, made discharged water can pass through the second flash vessel in the first flash vessel, and the further dilatation of decompression has improved geothermal water's heat energy utilization efficiency.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (4)
1. A flash distillation cascade geothermal utilization system which characterized in that: comprises a geothermal well, a first flash evaporator, a second flash evaporator, a heat exchanger and a heat pump unit, wherein a geothermal water supply pipe is connected with a water inlet of the first flash evaporator, a submersible pump is arranged on the geothermal water supply pipe, the water outlet of the first flash evaporator is connected with the water inlet of the second flash evaporator, the steam outlets of the first flash evaporator and the second flash evaporator are converged and then connected with a shell side inlet of the heat exchanger, the shell pass outlet of the heat exchanger is connected with the evaporator side inlet of the heat pump unit, the evaporator side outlet of the heat pump unit and the water outlet of the second flash evaporator are both connected with a recharging pipeline, a recharge pump is arranged on the recharge pipeline, the recharge pipeline is connected to the geothermal well, a tube pass inlet of the heat exchanger and a condenser side inlet of the heat pump unit are both connected with a heating and water return pipeline, and a circulating pump is arranged on the heating water return pipeline, and a pipe pass outlet of the heat exchanger and a condenser outlet of the heat pump unit are both connected with a heating water supply pipeline.
2. The flash evaporation step geothermal utilization system of claim 1, wherein: and the geothermal water supply pipe is also provided with a sand remover.
3. The flash evaporation step geothermal utilization system of claim 1, wherein: and one side of the geothermal well above the liquid level is provided with a downward inclined infiltration hole, and the recharge pipeline is inserted into the infiltration hole.
4. The flash evaporation step geothermal utilization system of claim 1, wherein: the delivery port of first flash vessel still connects the delivery port of second flash vessel, and is equipped with first valve on the connecting tube, be equipped with the second valve on the delivery port of first flash vessel and the connecting tube of the water inlet of second flash vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045856.4U CN213335020U (en) | 2020-09-17 | 2020-09-17 | Flash evaporation step geothermal utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022045856.4U CN213335020U (en) | 2020-09-17 | 2020-09-17 | Flash evaporation step geothermal utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213335020U true CN213335020U (en) | 2021-06-01 |
Family
ID=76064434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022045856.4U Expired - Fee Related CN213335020U (en) | 2020-09-17 | 2020-09-17 | Flash evaporation step geothermal utilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213335020U (en) |
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2020
- 2020-09-17 CN CN202022045856.4U patent/CN213335020U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210601 |