CN208620644U - Enhance closed mid-deep strata imbedded pipe heat-exchanging system - Google Patents
Enhance closed mid-deep strata imbedded pipe heat-exchanging system Download PDFInfo
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- CN208620644U CN208620644U CN201820839934.8U CN201820839934U CN208620644U CN 208620644 U CN208620644 U CN 208620644U CN 201820839934 U CN201820839934 U CN 201820839934U CN 208620644 U CN208620644 U CN 208620644U
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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 kind of closed mid-deep strata imbedded pipe heat-exchanging systems of enhancing.It solves the technical problems such as existing underground pipe heat exchange efficiency is low.Including return water vertical shaft, water exit shaft, return water vertical tube and water outlet vertical tube, return water vertical tube upper end is backwater end, water outlet vertical tube upper end is water outlet, return water vertical shaft lower end is equipped at least one return water horizontal well, water exit shaft lower end is equipped at least one water outlet horizontal well, water outlet horizontal well and return water horizontal well are parallel to each other and shift to install, the return water horizontal transverse-pipe being connected with return water vertical tube is equipped in return water horizontal well, the water outlet horizontal transverse-pipe being connected with water outlet vertical tube is equipped in water outlet horizontal well, branch pipe connectivity structure is equipped between return water horizontal transverse-pipe and water outlet horizontal transverse-pipe.Advantage is: increasing the heat exchange area of pipe laying using horizontal transverse-pipe and horizontal branch pipe, system heat exchange amount can dramatically increase.Effective Insulation is taken, system heat losses can be prevented.
Description
Technical field
The invention belongs to geothermal energy equipment technical fields, and in particular to a kind of enhancing closed mid-deep strata imbedded pipe heat-exchanging system
System.
Background technique
Increasingly in short supply with traditional fossil energy, people are growing day by day to the worry of energy security, climate change, underground heat
The energy is also increasingly paid close attention to and is approved.In cold northern area, air-source and solar energy are influenced by local climate environment
Greatly, be using air-source and solar energy as heating heat source it is extremely unstable, and geothermal energy as a kind of green low-carbon, use it
Inexhaustible renewable energy is increasingly taken seriously.Wherein, mid-deep strata geothermal energy is that hot application field is most valuable and potentiality
Source is primarily referred to as underground 2-3km, the heat resource that temperature contains in the stratum of 70-90 DEG C of even higher range.Mid-deep strata
Geothermal energy heat source is sufficient, and use value is high, not can cause environmental pollution, moreover it is possible to realize round-the-clock all the period of time application, have
The features such as green low-carbon, clean and safe, reserves are big, distribution is wide, stability is good, and in line with the original of not polluted underground water resource
Then, the closed mid-deep strata sleeve heat exchange in China has been greatly developed.Mid-deep strata bushing type earth source heat pump is by a bite
The well of deep layer exchanges heat, and is promoted again by ground-source heat pump host heating, is supplied to building end thermal energy.But so far, due to general
Lead to the individual well straight well that closed mid-deep strata sleeve heat exchange mode is, therefore heat exchange area is small, heat exchange efficiency is low；Barrel forms, thus it is interior
Pipe specification is small；Supply backwater temperature difference is small；So overall heat exchange amount is small.
Of the existing technology in order to solve the problems, such as, people have carried out long-term exploration, propose miscellaneous solution
Scheme.For example, Chinese patent literature disclose a kind of vertical double S-shaped underground heat exchanger for ground source heat pump [application number:
201120389804.7], including horizontal direction S type heat exchanger, vertical direction S type heat exchanger.Horizontal direction S type heat exchanger and hang down
Histogram is to S type heat exchanger in orthogonal space layout state.Double S type Buried heat exchangers are placed on the heat exchange well accomplished fluently in advance
It is interior, backfilling material is finally buried again, can be exchanged heat with the soil of surrounding.
Above structure is mainly the heat exchange efficiency that individual well is improved by two S-type heat exchangers, although than routine
Single U-shaped, double-U-shaped heat exchanger heat exchange efficiency has a certain upgrade, but it is substantially still exchanged heat using individual well, thus the program according to
So there is the problems such as heat exchange area are small, heat exchange efficiency is low, supply backwater temperature difference is small, overall heat exchange amount is small.
Summary of the invention
Regarding the issue above, the present invention provides a kind of design is rationally, the enhancing of the heat exchange area of pipe laying is improved
Closed mid-deep strata imbedded pipe heat-exchanging system.
In order to achieve the above objectives, present invention employs following technical proposals: this enhancing closed mid-deep strata imbedded pipe heat-exchanging system
System, including being arranged along the vertical direction and the return water vertical shaft and water exit shaft that shift to install in the horizontal direction, the return water vertical shaft
It is inside equipped with the internal return water vertical tube for being equipped with refrigerating medium, is equipped with water outlet vertical tube in the water exit shaft, and described
Return water vertical tube upper end is backwater end, and the water outlet vertical tube upper end is water outlet, and the return water vertical shaft lower end is equipped with extremely
A few horizontally disposed return water horizontal well, the water exit shaft lower end are equipped at least one with return water horizontal well positioned at same
The water outlet horizontal well of horizontal plane, and the water outlet horizontal well and return water horizontal well is parallel to each other and shifts to install, described returns
It is equipped with the return water horizontal transverse-pipe being connected with return water vertical tube in water horizontal well, be equipped in the water outlet horizontal well and goes out
The water outlet horizontal transverse-pipe that water vertical tube is connected, and be equipped with and can will return between the return water horizontal transverse-pipe and water outlet horizontal transverse-pipe
Refrigerating medium in water vertical tube is drained to water outlet horizontal transverse-pipe until the branch pipe connection of water outlet vertical tube is tied through return water horizontal transverse-pipe
Structure.
The purpose of the present invention is making full use of horizontal transverse-pipe and branch pipe connectivity structure to increase the heat exchange area of pipe laying, thus
Increase heat exchange amount.Return water vertical shaft is connected by return water horizontal well in the high-temperature stratum of subsurface certain depth, passes through water outlet
Water exit shaft is connected by horizontal well, and return water horizontal transverse-pipe and water outlet horizontal transverse-pipe and branch pipe connectivity structure are vertical by return water respectively
Pipe be connected to water outlet vertical tube, sufficiently takes in high-temperature stratum and high temperature refrigerating medium is sent to ground by being discharged vertical tube after heat
Produce stable heat source.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, the return water vertical shaft lower end is successively set from up to down
There are several return water horizontal wells, each return water horizontal well is equidistantly successively arranged in parallel；The water exit shaft lower end is certainly
On be successively arranged several water outlet horizontal wells being arranged in a one-to-one correspondence respectively with return water horizontal well downwards, and each water outlet horizontal well
It is equidistant successively arranged in parallel, and any one return water horizontal well and corresponding water outlet horizontal well are located at same level
On.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, the return water vertical shaft and water exit shaft depth phase
Together, and the return water horizontal well is successively set on respectively at 2400~3000 meters of return water vertical shaft lower end；The water outlet is horizontal
Well is successively set on respectively at 2400~3000 meters of water exit shaft lower end.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, the branch pipe connectivity structure includes several setting respectively
The horizontal branch pipe between the return water horizontal transverse-pipe being located on horizontal plane and water outlet horizontal transverse-pipe is set, and the horizontal branch pipe is in
Straight tube-like or bent tube form, each horizontal branch pipe one end are connected with return water horizontal transverse-pipe, and the other end is and water outlet is horizontal
Transverse tube is connected.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, the horizontal branch pipe distinguishes successively equidistant and phase
It is mutually arranged in parallel, and the return water horizontal transverse-pipe end and water outlet horizontal transverse-pipe end are respectively connected with horizontal branch pipe.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, between the return water vertical shaft and return water vertical tube,
Between water exit shaft and water outlet vertical tube, between return water horizontal well and return water horizontal transverse-pipe and water outlet horizontal well and water outlet it is horizontal
It is connected respectively by cementing concrete between transverse tube.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, the return water vertical tube upper end outer circumferential is equipped with
First insulating layer.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, first insulating layer is arranged in return water vertical tube
By being extended downward within the scope of 600 meters at the top of upper end.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, the circumferential direction at water outlet vertical tube upper end to the middle part
Outside is equipped with the second insulating layer.
In the closed mid-deep strata imbedded pipe heat-exchanging system of above-mentioned enhancing, the second insulating layer setting is in water outlet vertical tube
By being extended downward within the scope of 2400 meters at the top of upper end.
Compared with prior art, the present invention has the advantages that 1, this system is only that heat is taken not fetch water to underground environment,
To groundwater environment without any pollution.2, this system increases changing for pipe laying using horizontal transverse-pipe and horizontal branch pipe in high-temperature stratum
This mode of heat area, and as the length of horizontal transverse-pipe and horizontal branch pipe changes, imbedded pipe heat-exchanging amount can be with tenfold or hundred
Variation again.System heat exchange amount can dramatically increase.It 3, can anti-locking system by taking effective Insulation to perpendicularly buried pipe
Thermal loss guarantees the stabilization achievement of system high efficiency heat exchange.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is transverse sectional view of the invention；
In figure, return water vertical shaft 1, refrigerating medium 3, return water vertical tube 4, backwater end 41, the first insulating layer 42, goes out water exit shaft 2
Water vertical tube 5, water outlet 51, the second insulating layer 52, return water horizontal well 6, water outlet horizontal well 7, return water horizontal transverse-pipe 8, water outlet water
Flat transverse tube 9, branch pipe connectivity structure 10, horizontal branch pipe 101, cementing concrete 102.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in Figs. 1-2, the closed mid-deep strata imbedded pipe heat-exchanging system of this enhancing, including be arranged along the vertical direction and in level
The return water vertical shaft 1 and water exit shaft 2 that direction shifts to install, return water vertical shaft 1 here are identical with 2 depth of water exit shaft, it should be ensured that
Depth is equipped with the internal return water vertical tube 4 for being equipped with refrigerating medium 3 in 3000 meters or more, return water vertical shaft 1, wears in water exit shaft 2
Equipped with water outlet vertical tube 5, and 4 upper end of return water vertical tube is backwater end 41, and water outlet 5 upper end of vertical tube is water outlet 51, wherein is returned
1 lower end of water vertical shaft is successively arranged several return water horizontal wells 6 from up to down, each return water horizontal well 6 is equidistant successively mutually flat
Row setting, in order to acquire mid-deep strata geothermal source, return water horizontal well 6 here is successively set on 1 lower end 2400 of return water vertical shaft respectively
At~3000 meters；For example, can be configured every 200 meters, 4 return water horizontal wells are set within the scope of such 2400~3000 meters
6.Likewise, 2 lower end of water exit shaft is successively arranged several water outlets being arranged in a one-to-one correspondence respectively with return water horizontal well 6 from up to down
Horizontal well 7, and each water outlet horizontal well 7 is equidistant successively arranged in parallel, and is discharged horizontal well 7 and is successively set on respectively
At 2400~3000 meters of 2 lower end of water exit shaft.And any one return water horizontal well 6 and corresponding water outlet horizontal well 7 are located at together
On one horizontal plane, and it is located at water outlet horizontal well 7 and return water horizontal well 6 in same level and is parallel to each other and shifts to install, returns
It is equipped with the return water horizontal transverse-pipe 8 being connected with return water vertical tube 4 in water horizontal well 6, is discharged in horizontal well 7 and is equipped with and goes out
The water outlet horizontal transverse-pipe 9 that water vertical tube 5 is connected, and being equipped between return water horizontal transverse-pipe 8 and water outlet horizontal transverse-pipe 9 can be by return water
Refrigerating medium 3 in vertical tube 4 is drained to water outlet horizontal transverse-pipe 9 until the branch pipe of water outlet vertical tube 5 connects through return water horizontal transverse-pipe 8
Logical structure 10.
The purpose of the present invention is make full use of return water horizontal transverse-pipe 8 and water outlet horizontal transverse-pipe 9 and branch pipe connectivity structure 10
Increase the heat exchange area of pipe laying, to increase heat exchange amount.Pass through return water level in the high-temperature stratum of subsurface certain depth
Return water vertical shaft 1 is connected by well 6, water exit shaft 2 is connected by water outlet horizontal well 7, return water horizontal transverse-pipe 8 and water outlet are horizontal horizontal
Return water vertical tube 4 is connected to by pipe 9 and branch pipe connectivity structure 10 with water outlet vertical tube 5 respectively, and heat is sufficiently taken in high-temperature stratum
High temperature refrigerating medium is sent to by ground by water outlet vertical tube 5 afterwards and produces stable heat source.
Preferably, branch pipe connectivity structure 10 here includes that several return water being separately positioned on horizontal plane are horizontal horizontal
Horizontal branch pipe 101 between pipe 8 and water outlet horizontal transverse-pipe 9, and horizontal branch pipe 101 can be set in straight tube-like, as shown in Fig. 2,
Meanwhile each 101 one end of horizontal branch pipe is connected with return water horizontal transverse-pipe 8, the other end is connected with water outlet horizontal transverse-pipe 9
It is logical；Certainly, in order to improve heat exchange area and heat exchange efficiency, horizontal branch pipe 101 here also be can be set in bending, for example, S
Type pipe, curved pipe etc..In order to improve the stability of heat exchange, horizontal branch pipe 101 here is successively equidistant respectively and is parallel to each other
Setting, and 8 end of return water horizontal transverse-pipe and water outlet 9 end of horizontal transverse-pipe are respectively connected with horizontal branch pipe 101.
Further, between return water vertical shaft 1 and return water vertical tube 4 here, between water exit shaft 2 and water outlet vertical tube 5,
Pass through well cementation respectively between return water horizontal well 6 and return water horizontal transverse-pipe 8 and between water outlet horizontal well 7 and water outlet horizontal transverse-pipe 9
Cement 102 is connected, and is cemented the well between pipe laying and well with cementing concrete 102, higher can increase of 102 thermal coefficient of cementing concrete is changed
Heat and have well cementation effect.
The principle of the present embodiment is: in the high-temperature stratum of 2400~3000 meters of depths of subsurface by return water horizontal well 6,
Return water vertical shaft 1 is connected by water outlet horizontal well 7 with water exit shaft 2, return water horizontal transverse-pipe 8, water outlet horizontal transverse-pipe 9 and horizontal branch pipe
101 are connected return water vertical tube 4 with water outlet vertical tube 5, pass through water outlet vertical tube 5 for high temperature after heat is sufficiently taken in high-temperature stratum
Refrigerating medium 3 is sent to ground and produces stable heat source.This method takes full advantage of return water horizontal transverse-pipe 8, water outlet 9 and of horizontal transverse-pipe
Horizontal branch pipe 101 increases the heat exchange area of pipe laying, to increase imbedded pipe heat-exchanging amount.The return water vertical shaft 1 of backwater end 41, water outlet
51 water exit shaft 2 and return water horizontal well 6 and water outlet horizontal well 7 forms a multilayer U-shaped well, and one is back-shaped at envelope for one
Closed system loop, system take heat not fetch water to groundwater resources without any pollution destruction；And specification is certain excavating
Under conditions of, the pipe laying caliber of facing sleeve heat-exchange system, this system is big, then flow is big, heat exchange amount is big；
When refrigerating medium 3 reaches 2400~3000 meters of depths of high temperature ground section in return water vertical tube 4, refrigerating medium 3 can divide multilayer
Horizontal branch pipe 101 is flowed into from return water horizontal transverse-pipe 8, then is converged by corresponding water outlet horizontal transverse-pipe 9 into water outlet vertical tube 5
Interior, this measure can greatly reinforce the contact area of pipe laying and Rock And Soil, and heat exchange contact surface is not solely restricted in a plane,
It has been risen in a solid space herein.And with return water horizontal transverse-pipe 8, water outlet horizontal transverse-pipe 9 and horizontal branch pipe 101
Length increase, imbedded pipe heat-exchanging amount can be with tenfold or hundred times of increase.
Wherein, 4 upper end outer circumferential of return water vertical tube here is equipped with the first insulating layer 42, and the setting of the first insulating layer 42 exists
Return water vertical tube 4 at the top of upper end by extending downward within the scope of 600 meters.When the refrigerating medium 3 of low temperature in 25~35 DEG C enters return water
When the return water vertical tube 4 at end 41,41 heat of backwater end is absorbed by middle-shallow layer Rock And Soil in order to prevent, and system thermal is prevented to scatter and disappear,
Heat preservation is carried out to first insulating layer 42 made of thermal insulation material of return water vertical tube 4 in 0~600 meter of depth
Further, the outer circumferential at water outlet 5 upper end of vertical tube to middle part here is equipped with the second insulating layer 52, excellent
Choosing, the setting of the second insulating layer 52 is in water outlet vertical tube 5 by being extended downward within the scope of 2400 meters at the top of upper end.When refrigerating medium 3 from
When return water horizontal transverse-pipe 8 enters water outlet horizontal transverse-pipe 9 by horizontal branch pipe 101, refrigerating medium 3 summarizes going out to water outlet vertical tube 5
Water end (W.E.) 51, the water outlet vertical tube 5 of the water outlet 51 after heat preservation, which send high temperature refrigerating medium 3 to water outlet 51, enters user.It carries
Cryogen 3 is after the interior heat exchange of 2400~3000 meters of deep spaces produces 95 DEG C of highest temperature-heat-source, to reduce system high temperature heat from heat source
Loss, is deep at 0 absolute altitude of ground second made of thermal insulation material the water outlet vertical tube 5 of water outlet 51 for 2400 meters from summarizing
Insulating layer 52 uses complete stroke thermal insulating measure.The closed mid-deep strata imbedded pipe heat-exchanging mode of such enhancing can accomplish ultra high efficiency heat exchange and
The purpose that heat zero loses.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although be used more herein return water vertical shaft 1, water exit shaft 2, refrigerating medium 3, return water vertical tube 4, backwater end 41,
First insulating layer 42, water outlet vertical tube 5, water outlet 51, the second insulating layer 52, return water horizontal well 6, water outlet horizontal well 7, return water water
The terms such as flat transverse tube 8, water outlet horizontal transverse-pipe 9, branch pipe connectivity structure 10, horizontal branch pipe 101, cementing concrete 102, but be not precluded
A possibility that using other terms.The use of these items is only for be more convenient to describe and explain essence of the invention；?
They, which are construed to any additional limitation, is disagreed with spirit of that invention.
Claims (10)
1. a kind of closed mid-deep strata imbedded pipe heat-exchanging system of enhancing, including be arranged along the vertical direction and shift to install in the horizontal direction
Return water vertical shaft (1) and water exit shaft (2), the internal return water for being equipped with refrigerating medium (3) is equipped in the return water vertical shaft (1) and is hung down
Straight tube (4), the water exit shaft (2) is interior to be equipped with water outlet vertical tube (5), and described return water vertical tube (4) upper end is back
Water end (W.E.) (41), water outlet vertical tube (5) upper end are water outlet (51), which is characterized in that described return water vertical shaft (1) lower end
Equipped at least one horizontally disposed return water horizontal well (6), the water exit shaft (2) lower end is equipped at least one and return water water
Horizontal well (6) is located at the water outlet horizontal well (7) of same level, and the water outlet horizontal well (7) and return water horizontal well (6) is mutual
It in parallel and shifts to install, is equipped with the return water horizontal transverse-pipe being connected with return water vertical tube (4) in the return water horizontal well (6)
(8), the water outlet horizontal transverse-pipe (9) being connected with water outlet vertical tube (5) is equipped in the water outlet horizontal well (7), and described
Return water horizontal transverse-pipe (8) and water outlet horizontal transverse-pipe (9) between be equipped with the refrigerating medium (3) in return water vertical tube (4) can be passed through back
Water horizontal transverse-pipe (8) is drained to water outlet horizontal transverse-pipe (9) until being discharged the branch pipe connectivity structure (10) of vertical tube (5).
2. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 1, which is characterized in that the return water vertical shaft
(1) lower end is successively arranged several return water horizontal wells (6) from up to down, each return water horizontal well (6) is equidistant successively mutually flat
Row setting；Described water exit shaft (2) lower end is successively arranged several correspond respectively with return water horizontal well (6) from up to down and sets
The water outlet horizontal well (7) set, and each water outlet horizontal well (7) is equidistant successively arranged in parallel, and any one return water
Horizontal well (6) and corresponding water outlet horizontal well (7) are located in same level.
3. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 2, which is characterized in that the return water vertical shaft
(1) return water horizontal well (6) identical with water exit shaft (2) depth and described is successively set on return water vertical shaft (1) lower end respectively
At 2400~3000 meters；The water outlet horizontal well (7) is successively set on 2400~3000 meters of water exit shaft (2) lower end respectively
Place.
4. the according to claim 1 or 2 or 3 closed mid-deep strata imbedded pipe heat-exchanging systems of enhancing, which is characterized in that the branch
Pipe connectivity structure (10) includes several return water horizontal transverse-pipes (8) being separately positioned on horizontal plane and water outlet horizontal transverse-pipe
(9) horizontal branch pipe (101) between, and the horizontal branch pipe (101) is in straight tube-like or bent tube form, each horizontal branch pipe
(101) one end is connected with return water horizontal transverse-pipe (8), and the other end is connected with water outlet horizontal transverse-pipe (9).
5. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 4, which is characterized in that the horizontal branch pipe
(101) distinguish successively equidistant and arranged in parallel and described return water horizontal transverse-pipe (8) end and water outlet horizontal transverse-pipe
(9) end is respectively connected with horizontal branch pipe (101).
6. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 4, which is characterized in that the return water vertical shaft
(1) between return water vertical tube (4), water exit shaft (2) and water outlet vertical tube (5) between, return water horizontal well (6) and return water level
It is connected respectively by cementing concrete (102) between transverse tube (8) and between water outlet horizontal well (7) and water outlet horizontal transverse-pipe (9).
7. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 4, which is characterized in that the return water is vertical
It manages (4) upper end outer circumferential and is equipped with the first insulating layer (42).
8. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 7, which is characterized in that first heat preservation
Layer (42) setting is in return water vertical tube (4) by extending downward within the scope of 600 meters at the top of upper end.
9. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 4, which is characterized in that the water outlet is vertical
The outer circumferential for managing (5) upper end to middle part is equipped with the second insulating layer (52).
10. enhancing closed mid-deep strata imbedded pipe heat-exchanging system according to claim 9, which is characterized in that described second protects
Warm layer (52) setting is in water outlet vertical tube (5) by extending downward within the scope of 2400 meters at the top of upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820839934.8U CN208620644U (en) | 2018-05-31 | 2018-05-31 | Enhance closed mid-deep strata imbedded pipe heat-exchanging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820839934.8U CN208620644U (en) | 2018-05-31 | 2018-05-31 | Enhance closed mid-deep strata imbedded pipe heat-exchanging system |
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| CN208620644U true CN208620644U (en) | 2019-03-19 |
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ID=65700895
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| CN201820839934.8U Expired - Fee Related CN208620644U (en) | 2018-05-31 | 2018-05-31 | Enhance closed mid-deep strata imbedded pipe heat-exchanging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613424A (en) * | 2018-05-31 | 2018-10-02 | 浙江陆特能源科技股份有限公司 | Enhance closed mid-deep strata imbedded pipe heat-exchanging system |
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2018
- 2018-05-31 CN CN201820839934.8U patent/CN208620644U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613424A (en) * | 2018-05-31 | 2018-10-02 | 浙江陆特能源科技股份有限公司 | Enhance closed mid-deep strata imbedded pipe heat-exchanging system |
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