CN207247602U - A kind of U-shaped heat exchange structure of mid-deep strata geothermal energy - Google Patents
A kind of U-shaped heat exchange structure of mid-deep strata geothermal energy Download PDFInfo
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- CN207247602U CN207247602U CN201721163314.9U CN201721163314U CN207247602U CN 207247602 U CN207247602 U CN 207247602U CN 201721163314 U CN201721163314 U CN 201721163314U CN 207247602 U CN207247602 U CN 207247602U
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- well section
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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
It the utility model is related to geothermal energy development and utilize field, and provide a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, fluid working substance stream is injected in the U-shaped heat exchange structure, and carry out heat exchange with stratum and obtain heat, including the first straight well section, connection well section and the second straight well section that are sequentially connected and connect from beginning to end and U-shaped structure is formed, the first straight well section and the second straight well Duan Jun are vertically arranged and respectively positioned at the both sides of the connection well section；The connection well section is docked with the second straight well section level；The upper end of the first straight well section and the second straight well section has open ports respectively.The utility model, which is installed on below ground floor and can not destroy under geology structure situation, obtains geothermal energy.
Description
Technical field
It the utility model is related to geothermal energy development and utilize field, more particularly to a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy.
Background technology
Mid-deep strata geothermal energy development has two kinds using technology at present, and mid-deep strata geothermal fluid utilizes technology and mid-deep strata underground heat
The energy buried tubular type extractive technique of straight well, it is specific as follows since both technologies are all there are certain shortcoming：
Mid-deep strata geothermal fluid utilization technology：The technology is utilized to be restricted by geothermal fluid occurrence condition, and there are underground heat in addition
The problems such as fluid is serious to corrosive pipeline, Tail water reuse environment easy to pollute, geothermal fluid resource is non-renewable.
The buried tubular type extractive technique of mid-deep strata geothermal energy straight well：The adaptability of technology is extensive, it is environmentally protective, energy-efficient,
Water conservation, but up-front investment is higher, by straight well concentric tube discharge capacity it is small with length is short is influenced, heat extraction efficiency is small,
Heating area is small.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, can not
Destroy under geology structure situation and obtain geothermal energy.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of U-shaped heat exchange structure of mid-deep strata geothermal energy,
Fluid working substance trickling carries out heat exchange with stratum and obtains heat in the U-shaped heat exchange structure, including is sequentially connected from beginning to end and even
Logical the first straight well section, connection well section and the second straight well section simultaneously form U-shaped structure, the first straight well section and described second straight
Well section is vertically arranged and respectively positioned at the both sides of the connection well section；The connection well section and the second straight well section level are right
Connect；The upper end of the first straight well section and the second straight well section has open ports respectively.
The beneficial effects of the utility model are：U-shaped heat exchange structure is arranged to head and the tail and is sequentially connected and connects, fluid working substance stream
Drop down in U-shaped heat exchange structure, heat is obtained so as to the stratum outside U-shaped heat exchange structure exchange heat.And then not destructively
Matter structure, do not extract GEOTHERMAL WATER and underground environment zero injured, no pollution, realizes the purpose for taking heat not fetch water.Connect well section with
Second straight well section is docked by the way that connector is horizontal, so as to increase the length of connection well section horizontal direction, and then can make fluid work
Matter obtains more heats.
Based on the above technical solutions, the utility model can also do following improvement.
Further, a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, the connection structure include horizontal segment and deflecting
Section, one end of the inclination section and the lower end of the first straight well section be connected to and in communication with, the other end of the inclination section with it is described
One end of horizontal segment is connected to and in communication with；The other end of the horizontal segment and the lower end of the second straight well section are connected to and in communication with.
Beneficial effect using above-mentioned further scheme is that connection well section uses horizontal segment and deflecting segment structure, can make stream
Body working medium has a buffering when flowing through inclination section, so that the infringement of fracture will not be caused to the madial wall for connecting well section.
Further, a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, the inclination section are arranged to oliquely downward to depression
Arc structure.
Beneficial effect using above-mentioned further scheme is that arc structure can produce more preferable buffering effect.
Further, a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, the first straight well section, it is described connection well section and
The lateral wall of the second straight well section is arranged for firm well cementation layer respectively.
Beneficial effect using above-mentioned further scheme is can to consolidate U-shaped heat exchange structure after cementing the well, and completely cuts off water flooding to U
The corrosion of type heat exchange structure, extends the U-shaped heat exchange structure service life.
Further, a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, the connection well section are led to the second straight well section
Cross the horizontal docking of cement sheath.
Beneficial effect using above-mentioned further scheme is that cement sheath can be at the same time by connection well section and the second straight well Duan Lian
Connect and connect, and have good leakproofness, so that fluid working substance will not leak to underground in heat exchange structure trickling process, and then
To underground environmental nonpollution.
Further, a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, the first straight well section and the second straight well section
Upper outside circumferentially insulating layer is set respectively.
Beneficial effect using above-mentioned further scheme be the first straight well section top insulating layer be used for reduction make it is first straight
Well section conducts the loss of heat, and the insulating layer on the second straight well section top is used to make reduction fluid working substance that heat occur with low temperature formation
Amount exchanges, so as to reduce thermal loss.
Further, a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, the first straight well section, it is described connection well section and
The second straight well section is connected to and in communication with to be formed by multiple casings head and the tail.
Further, a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, the insulating layer are made of polyurethane material.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model middle sleeve structure diagram.
In attached drawing, parts list represented by the reference numerals is as follows：
10th, casing, the 1, first straight well section, 2, connection well section, the 3, second straight well section, 4, well cementing of cement section, 5, cement sheath, 6,
Insulating layer, 21, horizontal segment, 22, inclination section.
Embodiment
The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
Referring to Fig. 1, the utility model provides a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, hereinafter referred to as U-shaped heat exchange knot
Structure.Fluid working substance trickling carries out heat exchange with stratum and obtains heat in the U-shaped heat exchange structure.Including being sequentially connected from beginning to end
And the first straight well section 1 for connecting, connection and form U-shaped structure at 2 and second straight well section 3 of well section.First straight well section 1 and the second straight well
Section 3 is vertically arranged and respectively positioned at the both sides of connection well section 2.Connection well section 2 is docked with the level of the second straight well section 3.First is straight
The upper end of 1 and second straight well section 3 of well section has open ports respectively.
Docked specifically, connection well section 2 and the second straight well section 3 is horizontal, that is, connect well section 2 in the horizontal direction with the
Two straight well sections 3 are connected to and in communication with.
First straight well section, 1 open upper end mouth is as import, and 3 open upper end mouth of the second straight well section is as outlet.Import and go out
Mouth can be located at the installation site concordant with ground.
Fluid working substance is flowed into from import, and the first straight well section 1 set through vertical direction flows into underground and enters connection well section 2,
Since U-shaped heat exchange structure is formed as U-shaped structure, connection well section 2 has the horizontal structure of part, and fluid working substance is mainly in connection well
Heat exchange is carried out with stratum obtain heat at the horizontal structure of section 2.Due to stratum, temperature is higher at 2000 meters of horizontal level,
Connection well section 2 is with the horizontal docking of the second straight well section 3 so as to increase the length for the horizontal structure for being connected well section 2, and then increase fluid
Working medium obtains more heats.Fluid working substance flows to the second straight well section 3 straight up after obtaining heat from connection well section 2, and from the
The open ports of two straight well sections 3 flow out through pipeline and enter heat pump unit.
In one embodiment, connection well section 2 includes horizontal segment 21 and inclination section 22.One end of inclination section 22 and the first straight well
The lower end of section 1 is connected to and in communication with.The other end of inclination section 22 and one end of horizontal segment 21 are connected to and in communication with.Horizontal segment 21 it is another
The lower end with the second straight well section 3 is held to be connected to and in communication with.
Specifically, inclination section 22 is the lower end of the first straight well section 1 and the transition of horizontal segment 21, due to connection well section 2
Direction is different from the setting direction of the first straight well section 1, fluid working substance from the first straight well section 1 flow to connection well section 2 during meeting
The junction pipeline of first straight well section 1 and connection well section 2 is caused to impact, the setting of inclination section 22 so that junction pipeline not
Easy fracture.Fluid working substance mainly obtains heat in horizontal segment 21.
Further, inclination section 22 is arranged to oliquely downward to concave arc structure.
Specifically, as shown in Figure 1, " inside " is directed towards the direction in accommodating space center, " outside " is away from accommodating space
The direction in center.That is, the tube wall of inclination section 22 is arranged to outwards concave arc-shaped, so that empty in the pipe of inclination section 22
Chamber is formed as circular arc space.
In one embodiment, the first straight well section 1, the lateral wall of connection 2 and second straight well section 3 of well section are arranged for steady respectively
Solid well cementation layer 4.
Specifically, well cementation layer 4 can be made with cement material.Install U-shaped heat exchange structure process can in the following way,
Other modes known in those skilled in the art can certainly be used.
Before U-shaped heat exchange structure is installed, changed first according to the contour structures of U-shaped heat exchange structure in underground mining with U-shaped
The well that heat structure is adapted, the diameter of well are more bigger than the casing diameter of U-shaped heat exchange structure so as to facilitate the peace of U-shaped heat exchange structure
Dress.Secondly, the casing of the first straight well section 1, connection 2 and second straight well section 3 of well section is positioned in well respectively, and respectively along first
Gap between 1 and second straight well section 3 of straight well section and the borehole wall pours into cement, and cement flows through the first straight well section 1 along gap respectively, connects
Well cementation layer 4 is formed so as to fulfill well cementation after connecing the lateral wall solidification of 2 and second straight well section 3 of well section.
Further, well section 2 is connected to dock by the way that cement sheath 5 is horizontal with the second straight well section 3.
Specifically, cement sheath is the term in terms of drilling engineering in oil drilling exploitation industry.Cement sheath refers to cement mortar
The Behavior of Hardened Cement Paste formed in annular space, effect are to wrap set pipe collar to circularize, and well cementing operation rear sleeve and stratum pass through cement
Ring (i.e. Behavior of Hardened Cement Paste) is cemented together.In the utility model, the gap along between the first straight well section 1 and the second straight well section 3 and well
During pouring into cement, cement forms cement after solidification is accumulated in the space between connecting 2 and second straight well section 3 of well section
Block.The extending direction along connection 2 and second straight well section 3 of well section to cement block is drilled with drill bit on cement block respectively, so that even
Connect well section 2 with the second straight well section 3 to be connected, the cement block after drilling is formed as cement sheath.That is, the upper side wall of cement sheath
Vertical holes is offered, the one side wall of cement sheath towards connection well section 2 offers lateral aperture, vertical holes and lateral aperture in cement sheath 5
Inside is connected.So as to fulfill the horizontal docking of connection 2 and second straight well section 3 of well section.The horizontal direction of increase connection well section 2
Length, so that fluid working substance obtains more heats.
In one embodiment, the top of the first straight well section 1 and the second straight well section 3 is circumferential sets insulating layer 6 respectively.
Specifically, insulating layer 6 can use the cylinder-like structure that polyurethane material makes.In the first straight well section 1 and second
The accommodating space for being used for accommodating insulating layer 6 is formed along its circumferential direction at the top of straight well section 3.Insulating layer 6 is close to surround respectively
The exterior surrounding of 1 and second straight well section 3 of well section always.When the lateral wall of the first straight well section 1 and the second straight well section 3 is arranged with solid pipe
During layer 4, insulating layer 6 is close to surround respectively solid layer by layer 4 outside the first straight well section 1 and the second straight well section 3.So as to the first straight well section
1 and second straight well section 3 upper outside wall in trickling fluid working substance have the function that keep the temperature.The guarantor on 1 top of the first straight well section
Warm layer 6 is used to reduce the loss for making the first straight well section 1 conduct heat, and the insulating layer 6 on 3 top of the second straight well section is used to make reduction
With ground floor heat exchange occurs for fluid working substance, so as to reduce thermal loss.
In one embodiment, the first straight well section 1, connection 2 and second straight well section 3 of well section connect from beginning to end by multiple casings 10
And connect and to be formed.
Specifically, as shown in Fig. 2, set internal thread at the upper end opening of casing 10, external screw thread is provided with lower ending opening.
The lower end of one casing 10 is inserted into the upper end of another casing 10 and is threadedly coupled with it, so that after two casings 10 connect,
Fluid working substance will not be leaked in junction, and then underground environment will not be polluted.The upper and lower side of certain casing 10 can also
Using other structures being mutually adapted known to a person skilled in the art, so that connection of the fluid working substance in multiple casings 10
Place does not leak.
When mounted, first multiple casings 10 of the second straight well section 3 are mutually fitted into what is exploited in advance with heat exchange structure one by one
In the missile silo matched somebody with somebody, and cement the well.When installing the first straight well section 1 and connection well section 2, first 1 glass reinforced plastic pipe is entered ground
In going into the well, wherein glass reinforced plastic pipe has same outside diameter with casing 10, and 10 screw thread of casing of its subsequent G.I.H connects
Connect.Then multiple casings 10 are entered in missile silo one by one, and are cemented the well, finally from the 3 tripping in machinery drilling well of the second straight well section
Equipment shattered glass steel pipe, gets through the first straight well section 1, connection 2 and second straight well section 3 of well section.The mining depth of missile silo is general
For less than 2000 meters, and the temperature at 2000 meters of underground is about more than 80 DEG C, and the rigidity of casing 10 can weaken at this temperature,
So as to which deformation somewhat occur, and then because of itself when being conducive to preceding line direction transformation during advance of the casing 10 in well section 2
Deformation can adapt to the change of preceding line direction.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model
System.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the utility model, " multiple " are meant that at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
Combine in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this area
Technical staff can by the different embodiments or example described in this specification and different embodiments or exemplary feature into
Row combines and combination.
Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to the limitation to the utility model is interpreted as, those of ordinary skill in the art are in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (8)
1. a kind of U-shaped heat exchange structure of mid-deep strata geothermal energy, fluid working substance are flow into the U-shaped heat exchange structure, and with stratum into
Row heat exchange obtains heat, it is characterised in that including the first straight well section (1), the connection well section for being sequentially connected and connecting from beginning to end
(2) and the second straight well section (3) and U-shaped structure is formed,
The first straight well section (1) and the second straight well section (3) are vertically arranged and respectively positioned at the connection well sections (2)
Both sides；The connection well section (2) is docked with the second straight well section (3) level；The first straight well section (1) and described second straight
The upper end of well section (3) has open ports respectively.
A kind of 2. U-shaped heat exchange structure of mid-deep strata geothermal energy according to claim 1, it is characterised in that the connection well section (2)
Including horizontal segment (21) and inclination section (22), one end of the inclination section (22) is connected with the lower end of the first straight well section (1)
And connect, one end of the other end and the horizontal segment (21) of the inclination section (22) is connected to and in communication with；The horizontal segment (21)
The other end and the lower end of the second straight well section (3) be connected to and in communication with.
A kind of 3. U-shaped heat exchange structure of mid-deep strata geothermal energy according to claim 2, it is characterised in that the inclination section (22)
It is arranged to oliquely downward to concave arc structure.
4. the U-shaped heat exchange structure of mid-deep strata geothermal energy according to claim 1, it is characterised in that the first straight well section (1),
The lateral wall of the connection well section (2) and the second straight well section (3) is arranged for firm well cementation layer (4) respectively.
5. the U-shaped heat exchange structure of mid-deep strata geothermal energy according to claim 4, it is characterised in that the connection well section (2) and institute
The second straight well section (3) is stated to dock by the way that cement sheath (5) is horizontal.
6. according to any one of claim 1 to the 5 U-shaped heat exchange structure of mid-deep strata geothermal energy, it is characterised in that described first is straight
Well section (1) and the circumferential setting insulating layer (6) respectively of the upper outside of the second straight well section (3).
7. according to any one of claim 1 to the 5 U-shaped heat exchange structure of mid-deep strata geothermal energy, it is characterised in that described first is straight
Well section (1), the connection well section (2) and the second straight well section (3) are connected to and in communication with institute's shape from beginning to end by multiple casings (10)
Into.
8. the U-shaped heat exchange structure of mid-deep strata geothermal energy according to claim 6, it is characterised in that the insulating layer (6) is using poly-
Urethane material makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163314.9U CN207247602U (en) | 2017-09-11 | 2017-09-11 | A kind of U-shaped heat exchange structure of mid-deep strata geothermal energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163314.9U CN207247602U (en) | 2017-09-11 | 2017-09-11 | A kind of U-shaped heat exchange structure of mid-deep strata geothermal energy |
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| CN207247602U true CN207247602U (en) | 2018-04-17 |
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ID=61888274
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| CN201721163314.9U Active CN207247602U (en) | 2017-09-11 | 2017-09-11 | A kind of U-shaped heat exchange structure of mid-deep strata geothermal energy |
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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 |
-
2017
- 2017-09-11 CN CN201721163314.9U patent/CN207247602U/en active Active
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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| CP01 | Change in the name or title of a patent holder |
Address after: 710000 No. 75, Keji 2nd Road, high tech Zone, Xi'an, Shaanxi Patentee after: Shaanxi Yanchang Petroleum International Energy Chemical Co.,Ltd. Address before: 710000 No. 75, Keji 2nd Road, high tech Zone, Xi'an, Shaanxi Patentee before: SHAANXI YANCHANG PETROLEUM INTERNATIONAL EXPLORATION DEVELOPMENT ENGINEERING Co.,Ltd. |
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