CN202543904U - Screw-in wall-post-grouting precast pile device for ground-source heat energy conversion - Google Patents
Screw-in wall-post-grouting precast pile device for ground-source heat energy conversion Download PDFInfo
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- CN202543904U CN202543904U CN2012200772840U CN201220077284U CN202543904U CN 202543904 U CN202543904 U CN 202543904U CN 2012200772840 U CN2012200772840 U CN 2012200772840U CN 201220077284 U CN201220077284 U CN 201220077284U CN 202543904 U CN202543904 U CN 202543904U
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- wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
- F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
- F24T10/15—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using bent tubes; using tubes assembled with connectors or with return headers
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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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- General Life Sciences & Earth Sciences (AREA)
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
一种旋进式壁后注浆地源热能转换预制桩装置，包括分别埋入桩孔内的若干个旋进式壁后注浆预制螺旋桩，各螺旋桩内埋设有垂直换热器，各垂直换热器的进口端和出口端分别伸出螺旋桩上端开口，分别与承台或垫层内的水平进液集管、水平出液集管连接，沿垂直换热器的长度方向每隔1-3m设置的对中支架，旋进式壁后注浆预制螺旋桩包括空心桩芯，桩芯底部设置圆锥形桩头，桩芯外壁下部1-3m位置处设置螺旋叶片，桩芯外壁中上部与桩孔壁之间浇注后注浆加固层。本实用新型包括若干个旋进式壁后注浆预制螺旋桩，各螺旋桩内埋设有垂直换热器，使桩基施工和地源热泵施工一体化，避免了地源热泵系统在地面上的钻孔埋管程序，大大降低了前期投资成本，节约了用地面积，桩芯外壁中上部与桩孔壁之间浇注后注浆加固层，既加大了热传导面积，也提高了热传导性能，同时提高了桩体承载力。
A screw-in type post-wall grouting ground source heat energy conversion prefabricated pile device, including several screw-in type back-wall grouting prefabricated screw piles respectively embedded in pile holes, each screw pile is embedded with a vertical heat exchanger, each The inlet end and the outlet end of the vertical heat exchanger protrude from the upper opening of the screw pile respectively, and are respectively connected with the horizontal liquid inlet header and the horizontal liquid outlet header in the cap or the cushion layer. The centering support set at 1-3m, the prefabricated screw pile with screw-in grouting behind the wall includes a hollow pile core, a conical pile head is set at the bottom of the pile core, and a spiral blade is set at 1-3m below the outer wall of the pile core. The grouting reinforcement layer is poured between the upper part and the pile hole wall. The utility model includes several prefabricated spiral piles with prefabricated grouting after the screw-in type wall, and vertical heat exchangers are embedded in each spiral pile, so that the construction of the pile foundation and the construction of the ground source heat pump are integrated, and the ground source heat pump system is avoided. The procedure of drilling and laying pipes greatly reduces the initial investment cost and saves the land area. The grouting reinforcement layer is poured between the middle and upper part of the outer wall of the pile core and the pile hole wall, which not only increases the heat conduction area, but also improves the heat conduction performance. Increased pile bearing capacity.
Description
Technical field
The utility model relates to ground source heat ability preformed pile technical field, relates to a kind of screw type grouting behind shaft or drift lining ground source heat specifically and can change the preformed pile device.
Background technology
Earth source heat pump can offer building with ground source heat, and this not only environmental protection but also energy-conservation mode just are widely used, still; Earth source heat pump is through " boring direct burial " method; Promptly through in advance in the underground mode of imbedding heat exchanger tube, underground heat energy is transformed on the ground, and the expense of prebored hole is very high; It is over half generally to account for gross investment, and the technology of in boring, imbedding heat exchanger tube is very complicated.This causes difficulty all for the development of ground source heat pump technology.Pile foundation is a building base form commonly used, and the stake diameter is from 0.5～2.0m usually, long ten meters of stakes, even reach hundred meters, be embedded in the deep soil.The inventor finds through research practice, with the carrier of the screw type preformed pile after improving as underground buried tube, and it carried out grouting behind shaft or drift lining, not only solved the defective of above-mentioned earth source heat pump pipe laying in early stage technology, also improved bearing capacity of pile foundation.
The utility model content
The purpose of the utility model provides a kind of screw type grouting behind shaft or drift lining ground source heat can change the preformed pile device; Make pile foundation construction and earth source heat pump pipe laying construction integrated; Not only can avoid digging on the ground the deep hole of many 20～100m; Reduce boring greatly and bury cost underground, practiced thrift land area, also improved efficiency of construction.
In order to address the above problem, the technical solution of the utility model is:
A kind of screw type grouting behind shaft or drift lining ground source heat can be changed the preformed pile device; Comprise several screw type prefabricated screw piles of imbedding respectively in the hole; Be embedded with vertical exchanger in each screw pile; The entrance point of each vertical exchanger and the port of export stretch out the screw pile open upper end respectively, respectively with cushion cap or bed course in horizontal feed liquor collector, horizontal fluid collector be connected, along the length direction of vertical exchanger every at a distance from 1-3m be provided with to medium-height trestle; Screw type grouting behind shaft or drift lining prefabricated screw pile comprises the hollow pile core; Stake core bottom is provided with conical pile crown, and stake 1-3m position, outer core bottom is provided with helical blade, the grouting and reinforcing layer that the cast back forms between stake outer core middle and upper part and the stake hole wall.
The screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed the preformed pile device; Wherein said medium-height trestle is comprised plate body; The outside of plate body is provided with opening, and the number of opening is corresponding with the group number of the vertical heat exchanger tube of placement, and the somewhat larger in diameter of this open pore is in the external diameter of vertical heat exchanger tube; The center of plate body is provided with grout hole, and Grouting Pipe is placed in the grout hole.
The screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed the preformed pile device, wherein saidly adopts steel, plastics or concrete to process to medium-height trestle.
The screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed the preformed pile device; Horizontal feed liquor collector, horizontal fluid collector outside in wherein said cushion cap or the bed course is provided with feed liquor metal sleeve, the fluid metal sleeve of band clubfoot respectively, liquid inlet and outlet metal sleeve fill insulant material respectively and between the horizontal feed liquor collector, horizontal fluid collector.
The screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed the preformed pile device, and wherein said vertical exchanger is the vertical heat exchanger tube of U type.
The screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed the preformed pile device, and wherein said vertical heat exchanger tube is the heat exchanger tube of high-strength polyethylene or PVC or PPR material.
The utility model screw type grouting behind shaft or drift lining ground source heat can be changed the preformed pile device, comprises several screw type grouting behind shaft or drift lining prefabricated screw piles, is embedded with vertical exchanger in each screw pile and reaches medium-height trestle; Make pile foundation construction and earth source heat pump boring pipe laying construction integrated, avoided digging on the ground the deep hole of many 20～100m, greatly reduce cost; Practiced thrift land area, vertical exchanger has been embedded in the screw pile construction install convenience; Improved efficiency of construction, construction cost is low.The stake outer core bottom 1-3m position of screw pile is provided with helical blade, and screw pile is screwed in ground, has avoided the destruction of hammering construction to the stake end, avoided borehole construction backfill closely knit inadequately, influence heat conducting problem.Cast grouting behind shaft or drift lining back-up coat had both strengthened heat transfer area, and because the cement heat transfer property is better than soil, had also improved heat-conductive characteristic between stake outer core middle and upper part and the stake hole wall, had improved pile body bearing capacity simultaneously.The bearing capacity that this not only can improve pile foundation itself plays the purpose of carrying, retaining soil, ground stabilization, and can effectively enlarge the heat exchange contact area of heat exchanger tube and soil, improves heat exchanger effectiveness, conveniently carries out the closed circulation conversion of ground source heat ability.Therefore this screw type grouting behind shaft or drift lining ground source heat can be changed the preformed pile device and can transmit load for building, and the difference of source temperature and ambient temperature is carried out interchange of heat again capable of usingly, to reach the target of energy-conserving and environment-protective.
But the screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed the preformed pile device; Length direction along vertical heat exchanger tube is provided with medium-height trestle; Can be separately to medium-height trestle with vertical heat exchanger tube; Avoid a plurality of heat exchanger tubes to abut in together, cause heat to reflux, also guaranteed accurately laying of the stake many vertical heat exchanger tubes of group of in-core simultaneously.
Description of drawings
Fig. 1 is the structural representation that the utility model screw type grouting behind shaft or drift lining ground source heat can be changed the preformed pile device.
Fig. 2 is the sectional view that the utility model screw type grouting behind shaft or drift lining ground source heat can be changed preformed pile;
Fig. 3 is the B-B sectional drawing of Fig. 2.
Fig. 4 can change the sectional view that preformed pile device king-pile in-core is filled backfill for the utility model screw type grouting behind shaft or drift lining ground source heat;
Fig. 5 is the A-A sectional drawing of Fig. 4.
Fig. 6 can change the structural representation that the preformed pile device is imbedded the stratum for the utility model screw type grouting behind shaft or drift lining ground source heat;
Fig. 7 is a C-C sectional drawing among Fig. 6.
The specific embodiment
As shown in Figure 1; The utility model screw type grouting behind shaft or drift lining ground source heat can be changed the preformed pile device; Comprise several screw type grouting behind shaft or drift lining prefabricated screw piles 1 of imbedding respectively in the hole, be embedded with vertical exchanger 2 in each screw pile 1, vertical exchanger 2 is the vertical heat exchanger tube of U type; The entrance point of each vertical heat exchanger tube and the port of export stretch out screw pile 1 open upper end respectively, are connected with horizontal feed liquor collector 3, horizontal fluid collector 4 respectively.
In conjunction with Fig. 2, shown in 3, screw type grouting behind shaft or drift lining prefabricated screw pile 1 comprises cylinder type hollow stake core 11, and stake core 11 bottoms are provided with conical pile crown 12, and stake 1-3m position, core 11 outer wall bottom is provided with helical blade 13.Screw type grouting behind shaft or drift lining prefabricated screw pile 1 can be whole also sectional connect, when connecting for segmentation, every segment length is preferably 3-6m, section with section between employing weld or flange connects.
Vertical heat exchanger tube can be the heat exchanger tube of high-strength polyethylene or PVC or PPR material.For preventing that short circuit from appearring in vertical heat exchanger tube; Be provided with one to medium-height trestle 5 along the length direction of vertical heat exchanger tube is every at a distance from 1-3m; Medium-height trestle 5 adopted by steel, plastics, concrete or other harmless material of vertical heat exchanger tube is processed, comprise plate body 51, the outside of plate body 51 is provided with opening 52; The number of opening 52 is corresponding with the group number of the vertical heat exchanger tube of placement, and the somewhat larger in diameter in these opening 52 holes is in the external diameter of vertical heat exchanger tube.The center of plate body 51 is provided with grout hole 53, places Grouting Pipe 6 in the grout hole 53.
Horizontal feed liquor collector 3, horizontal fluid collector 4 are arranged in ground bed course 7 or the cushion cap.Horizontal feed liquor collector 3, horizontal fluid collector 4 outsides are provided with feed liquor metal sleeve 31, the fluid metal sleeve 41 of band clubfoot respectively, liquid inlet and outlet metal sleeve 31,41 fill insulant material respectively and between the horizontal feed liquor collector 3, horizontal fluid collector 4.
In conjunction with Fig. 4, shown in 5, fill backfill 8 in the stake core 11, backfill 8 can be constructional materialss such as concrete, cement mortar, cement paste, rubble and clay.
In conjunction with Fig. 6, shown in 7, cast grouting behind shaft or drift lining back-up coat 30 between stake outer core middle and upper part and the stake hole wall.
The screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed in the preformed pile device, and vertical exchanger is a U type pipe, according to actual heating load needs and stake core stake footpath size, can settle one or more groups vertical exchanger at the stake in-core.
The screw type ground source heat of the utility model can be changed the method that the preformed pile device is imbedded the stratum, may further comprise the steps:
(1) drive 1 rotation of screw type grouting behind shaft or drift lining prefabricated screw pile by stake mechanomotive force head and pierce pile foundation 9 desired depths,
(2) after pile sinking finishes; According to actual heating load needs and stake core stake footpath size, in stake core 11, place one or more groups vertical exchanger 2, be provided with one to medium-height trestle 5 along the length direction of vertical exchanger 2 is every at a distance from 1-3m; In to the grout hole 53 of medium-height trestle 5, place Grouting Pipe 6
(3) carry out backfill operation in the stake, backfill 8 high pressure are enclosed from stake core 11 bottoms from bottom to top through Grouting Pipe 6 with grouting pump or slush pump, backfill 8 can be constructional materialss such as concrete, cement mortar, cement paste, rubble and clay,
(4) after backfill finishes in the stake, the back mud jacking is carried out in the space between stake outer core middle and upper part and the stake hole, form grouting behind shaft or drift lining back-up coat 30, reinforce pile peripheral earth, see Fig. 6,7.
(5) horizontal feed liquor collector 3, horizontal fluid collector 4 are set in cushion cap or bed course 7, the entrance point of pre-buried vertical exchanger 2 in preformed pile, the port of export are connected with horizontal feed liquor collector 3, horizontal fluid collector 4 respectively.
After the screw type grouting behind shaft or drift lining ground source heat of the utility model can be changed the preformed pile device and imbeds the stratum, as shown in Figure 1, horizontal feed liquor collector 3, horizontal fluid collector 4 are connected with condensate correcting-distribuing device 10 respectively, condensate correcting-distribuing device 10 is connected with earth source heat pump unit 20.Filling heat-exchange fluid 21 in the vertical exchanger 2, this fluid 21 adopts water, salt solution or various antifreezing agent solution usually, forms cryogenically heat energy circulating system of enclosed type.The extruding soil layer 23 between all grouting behind shaft or drift lining back-up coat of helical blade 13 through backfill 8, stake core 11, stake outer core in the replacement fluids 21 in the vertical exchanger 2, the stake, the stake on pile body top 30, all bottoms of the stake helical blade and the thermostat layer of shallow soil water system carry out the cycling hot exchange; And reach the purpose that energy transforms through the earth source heat pump unit; Play the effect of central air-conditioning, if auxiliary central hot water system institute calorific requirement then can be provided with devices such as central heaters.
The above embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that the common engineers and technicians in this area make the technical scheme of the utility model all should fall in the protection domain that claims of the utility model confirm.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200772840U CN202543904U (en) | 2012-03-02 | 2012-03-02 | Screw-in wall-post-grouting precast pile device for ground-source heat energy conversion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200772840U CN202543904U (en) | 2012-03-02 | 2012-03-02 | Screw-in wall-post-grouting precast pile device for ground-source heat energy conversion |
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| CN202543904U true CN202543904U (en) | 2012-11-21 |
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| CN2012200772840U Expired - Fee Related CN202543904U (en) | 2012-03-02 | 2012-03-02 | Screw-in wall-post-grouting precast pile device for ground-source heat energy conversion |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587365A (en) * | 2012-03-02 | 2012-07-18 | 中国京冶工程技术有限公司 | Precession-type backfill grouting ground source thermal energy conversion precast pile device and method for embedding precast pile device into stratum |
| CN103016842A (en) * | 2012-12-13 | 2013-04-03 | 浙江环宇建设集团有限公司 | Reverse construction method for directly buried heat exchanger of ground source heat pump in mucky soft foundation |
| CN103485332A (en) * | 2013-09-26 | 2014-01-01 | 河海大学 | Construction method for precast energy pile |
| CN105350522A (en) * | 2015-10-22 | 2016-02-24 | 河海大学 | Method for manufacturing and using prefabricated reinforced concrete energy pile system |
| CN107965945A (en) * | 2016-01-29 | 2018-04-27 | 上海诺佛尔生态科技有限公司 | A kind of earth source heat pump |
| CN108166486A (en) * | 2018-02-06 | 2018-06-15 | 湖北工业大学 | Deep layer buried tube type prefabrication type energy pile pile and its construction technology |
| CN106016837B (en) * | 2016-07-12 | 2018-06-15 | 三峡大学 | A kind of energy acquisition and energy storage equipment based on pile-raft foundation |
| CN113864525A (en) * | 2021-08-31 | 2021-12-31 | 河南沃德环境科技有限公司 | Ground pipe combined type segmented synergistic heat exchange device |
| EP3721448A4 (en) * | 2017-12-04 | 2022-03-16 | Ge-Hitachi Nuclear Energy Americas LLC | Systems and methods for geothermal reactor passive cooling |
| CN114279096A (en) * | 2021-12-27 | 2022-04-05 | 沈阳枫叶能源科技有限公司 | Underground conveying device for heat supply of ground rock and construction method thereof |
-
2012
- 2012-03-02 CN CN2012200772840U patent/CN202543904U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587365A (en) * | 2012-03-02 | 2012-07-18 | 中国京冶工程技术有限公司 | Precession-type backfill grouting ground source thermal energy conversion precast pile device and method for embedding precast pile device into stratum |
| CN102587365B (en) * | 2012-03-02 | 2014-11-26 | 中国京冶工程技术有限公司 | Method for embedding precession-type backfill grouting ground source thermal energy conversion precast pile device into stratum |
| CN103016842A (en) * | 2012-12-13 | 2013-04-03 | 浙江环宇建设集团有限公司 | Reverse construction method for directly buried heat exchanger of ground source heat pump in mucky soft foundation |
| CN103485332A (en) * | 2013-09-26 | 2014-01-01 | 河海大学 | Construction method for precast energy pile |
| CN103485332B (en) * | 2013-09-26 | 2015-09-23 | 河海大学 | A kind of construction method of precast energy pile |
| CN105350522A (en) * | 2015-10-22 | 2016-02-24 | 河海大学 | Method for manufacturing and using prefabricated reinforced concrete energy pile system |
| CN107965945A (en) * | 2016-01-29 | 2018-04-27 | 上海诺佛尔生态科技有限公司 | A kind of earth source heat pump |
| CN107965945B (en) * | 2016-01-29 | 2019-08-09 | 上海诺佛尔生态科技有限公司 | A kind of earth source heat pump |
| CN106016837B (en) * | 2016-07-12 | 2018-06-15 | 三峡大学 | A kind of energy acquisition and energy storage equipment based on pile-raft foundation |
| EP3721448A4 (en) * | 2017-12-04 | 2022-03-16 | Ge-Hitachi Nuclear Energy Americas LLC | Systems and methods for geothermal reactor passive cooling |
| US11482345B2 (en) | 2017-12-04 | 2022-10-25 | Ge-Hitachi Nuclear Energy Americas Llc | Methods of constructing nuclear power plants with geothermal passive cooling |
| CN108166486A (en) * | 2018-02-06 | 2018-06-15 | 湖北工业大学 | Deep layer buried tube type prefabrication type energy pile pile and its construction technology |
| CN108166486B (en) * | 2018-02-06 | 2024-02-02 | 湖北工业大学 | Deep buried pipe type prefabricated energy pipe pile and construction process thereof |
| CN113864525A (en) * | 2021-08-31 | 2021-12-31 | 河南沃德环境科技有限公司 | Ground pipe combined type segmented synergistic heat exchange device |
| CN113864525B (en) * | 2021-08-31 | 2022-07-12 | 河南沃德环境科技有限公司 | Ground pipe combined type segmented synergistic heat exchange device |
| CN114279096A (en) * | 2021-12-27 | 2022-04-05 | 沈阳枫叶能源科技有限公司 | Underground conveying device for heat supply of ground rock and construction method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20140302 |