CN113718755A - Ground source heat pump pouring pile structure and construction method thereof - Google Patents
Ground source heat pump pouring pile structure and construction method thereof Download PDFInfo
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- CN113718755A CN113718755A CN202111019815.0A CN202111019815A CN113718755A CN 113718755 A CN113718755 A CN 113718755A CN 202111019815 A CN202111019815 A CN 202111019815A CN 113718755 A CN113718755 A CN 113718755A
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 29
- 230000002262 irrigation Effects 0.000 claims abstract description 16
- 238000003973 irrigation Methods 0.000 claims abstract description 16
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 238000010030 laminating Methods 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- General Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
The application discloses a structure of a ground source heat pump irrigation pile and a construction method thereof, relating to the technical field of ground source heat pump heat exchange tube construction; a structure of a ground source heat pump pouring pile comprises a foundation pile and a plurality of heat exchange assemblies which are sequentially arranged outside the foundation pile along the circumferential direction of the foundation pile; each heat exchange assembly comprises two heat exchange tubes; the length directions of the two heat exchange tubes are both arranged along the length direction of the foundation pile, and one ends of the two heat exchange tubes close to the lower end of the foundation pile are fixedly connected with a connecting bent tube together; a plurality of mounting seats are arranged between each heat exchange tube and the foundation pile, and each mounting seat is fixedly connected with the foundation pile; the mounting seat is provided with a mounting groove for embedding the heat exchange tube; the mounting seat is rotatably provided with a pressing plate for pressing the heat exchange tube, and a fixing assembly for fixing the pressing plate is arranged between the pressing plate and the mounting seat. The heat exchange tube is relatively separated from the foundation pile, so that the number of joints of the heat exchange tube is reduced, and the sealing performance of the heat exchange tube is improved.
Description
Technical Field
The application relates to the technical field of ground source heat pump construction, in particular to a structure of a ground source heat pump irrigation pile and a construction method thereof.
Background
The ground source heat pump is a device for transferring low-grade heat source to high-grade energy source by inputting a small amount of high-grade energy source (such as electric energy) into shallow land energy source. The ground source heat pump system mainly comprises an outdoor ground source heat exchange system, a ground source heat pump host system, an indoor tail end system and the like; the outdoor ground source heat exchange system comprises a plurality of heat exchange tubes penetrating into the ground. The soil or underground water below the earth surface is subjected to energy exchange with the medium in the heat exchange tube through the heat exchange tube so as to heat or cool the medium in the heat exchange tube. The heat exchange tube can be buried underground in a drilling and deep burying way; the heat exchange pipe can also be buried underground along with the foundation pile during the construction of the foundation pile.
The existing Chinese patent with publication number CN208363083U discloses a static drilling root planting energy pile, which comprises a lower bamboo joint precast pile, a middle cylindrical precast pile and an upper cylindrical precast pile; a lower heat exchange tube is integrally cast in the lower bamboo joint precast pile, a middle heat exchange tube is integrally cast in the middle cylindrical precast pile, and an upper heat exchange tube is integrally cast in the upper cylindrical precast pile; the lower heat exchange tubes are U-shaped, and the number of the middle heat exchange tubes and the number of the upper heat exchange tubes are two; the upper end of the lower heat exchange tube and the upper end of the middle heat exchange tube are both provided with funnel-shaped female connectors, and the lower end of the middle heat exchange tube and the lower end of the upper heat exchange tube are both provided with funnel-shaped male connectors capable of being inserted into the funnel-shaped female connectors. When the energy pile is constructed, a constructor firstly puts a lower bamboo joint precast pile into a pre-drilled hole, then hoists a middle cylindrical precast pile, enables a funnel-shaped male joint of a middle heat exchange tube to be inserted into a funnel-shaped female joint of a lower heat exchange tube, and then welds the middle cylindrical precast pile and the lower bamboo joint precast pile; welding the upper cylindrical precast pile and the middle cylindrical precast pile in the same way; and finally, inserting the upper cylindrical precast pile into the hole.
With respect to the related art in the above, the inventors consider that: the heat exchange tubes are connected in a manner of splicing and matching only through the funnel-shaped male connector and the funnel-shaped female connector, so that the sealing performance is poor; after long-term use, the condition of medium leakage in the heat exchange tube is easy to occur, so that the improvement is needed.
Disclosure of Invention
In order to solve the problem that the connection tightness of the heat exchange pipes is poor, the application provides a structure of a ground source heat pump pouring pile and a construction method of the structure.
In a first aspect, the application provides a structure of a ground source heat pump irrigation pile, which adopts the following technical scheme:
a structure of a ground source heat pump pouring pile comprises a foundation pile and a plurality of heat exchange assemblies which are sequentially arranged outside the foundation pile along the circumferential direction of the foundation pile; each heat exchange assembly comprises two heat exchange tubes, the length directions of the two heat exchange tubes are arranged along the length direction of the foundation pile, and one ends of the two heat exchange tubes close to the lower end of the foundation pile are fixedly connected with a connecting bent tube together; a plurality of mounting seats are arranged between each heat exchange tube and the foundation pile, and each mounting seat is fixedly connected with the foundation pile; the mounting seat is provided with a mounting groove for embedding the heat exchange tube; the mounting seat is rotatably provided with a pressing plate for pressing the heat exchange tube, and a fixing assembly for fixing the pressing plate is arranged between the pressing plate and the mounting seat.
By adopting the technical scheme, the heat exchange tube is separated from the foundation pile, is positioned outside the foundation pile, and has large operation space, so that the heat exchange tube is convenient for the sealing connection operation; on the other hand, the heat exchange tube is separated from the foundation pile, so that the length of the heat exchange tube required to be cut is determined by a constructor according to the length of the foundation pile, the integrity of the heat exchange tube is kept, the number of joints of the heat exchange tube is reduced, and the sealing performance of the heat exchange tube is improved; the two heat exchange tubes are connected through the connecting bent tube, so that the possibility of damage of the heat exchange tubes due to bending can be reduced; the pressing plate is matched with the mounting seat so as to fix the heat exchange tube and the foundation pile, and the heat exchange tube is simple in structure and convenient and fast to operate; the heat exchange tube is fixed with the foundation pile, and under the action of gravity of the foundation pile, the heat exchange tube can automatically go deep into the pile hole, so that the situation that the heat exchange tube is difficult to go deep into the underground due to the self buoyancy and the obstruction of slurry in the pile hole is reduced, and the operation is more labor-saving.
Optionally, the fixing assembly comprises a connecting block fixedly connected with the pressing plate and a fixing rod connected with the mounting seat in a sliding manner, and one end of the fixing rod is provided with a fixing hole for inserting the fixing rod.
Through adopting above-mentioned technical scheme, the dead lever cooperates with the fixed orifices grafting to the rotation of restriction pressure strip, thereby fixed pressure strip, so that the pressure strip compresses tightly the heat exchange tube.
Optionally, the mounting seat is provided with a connecting groove for embedding the connecting block, the inner side wall of the connecting groove is provided with a sliding hole, and the fixed rod is connected with the inner side wall of the sliding hole in a sliding manner; one end of the sliding hole, which is far away from the connecting groove, penetrates through the sliding hole.
Through adopting above-mentioned technical scheme, the connecting block is set in the spread groove, and the dead lever is located the inslot that slides, is favorable to reducing the area of contact between mud and the dead lever to reduce the dead lever because of the hindrance of mud and the possibility that the fixed orifices breaks away from.
Optionally, an abutting block is connected to an inner side wall of the sliding groove, which is located on one side of the fixed rod away from the connecting groove; an elastic piece for driving the fixed rod to move towards the connecting groove is arranged between the fixed rod and the abutting block; the dead lever is kept away from the one end slope of elastic component and is provided with the spigot surface, the spigot surface is located the dead lever and keeps away from the one side of the diapire of spread groove.
By adopting the technical scheme, when the pressing plate rotates towards the direction of the mounting seat, the connecting block can be abutted against the guide surface so as to drive the fixed rod to automatically move towards the sliding groove; when the connecting block moves to the fixing rod along with the pressing plate and is aligned with the fixing hole, the elastic piece can drive the fixing rod to automatically insert into the fixing hole. The guide surface is matched with the elastic part, so that the fixing operation of the heat exchange tube is simpler, quicker and more labor-saving.
Optionally, the abutting block is detachably connected with the mounting seat; one end of the elastic piece is fixedly connected with the fixing rod, and the other end of the elastic piece is fixedly connected with the abutting block.
Through adopting above-mentioned technical scheme, when the position of the heat exchange tube after fixing needs the adjustment, operating personnel pulled down the butt piece, then pulled butt piece, and the butt piece can pull the dead lever so that dead lever and fixed orifices break away from through the elastic component, and at this moment, the rotatable pressure strip of constructor to unclamp the heat exchange tube, and adjust the position of heat exchange tube.
Optionally, the inside wall of mounting groove is provided with the laminating cushion, the laminating cushion is provided with the laminating groove that is used for placing the heat exchange tube, the inside wall in laminating groove sets up with the periphery wall laminating of heat exchange tube.
By adopting the technical scheme, the inner side wall of the attaching groove is attached to the outer peripheral wall of the heat exchange tube, so that the friction force between the heat exchange tube and the attaching cushion is favorably increased, and the possibility that the heat exchange tube moves upwards along with the foundation pile in the sinking process of the heat exchange tube is reduced; the stability that heat exchange tube and foundation pile are connected can be improved to the laminating cushion.
Optionally, the fixed lug that is provided with of laminating cushion, the inside wall of mounting groove is provided with the fixed slot that is used for supplying fixed lug to inlay.
By adopting the technical scheme, the fixing lug is matched with the fixing slot, and the attaching cushion is detachably connected with the mounting seat; constructors can select different types of attaching cushions according to the pipe diameter of the heat exchange pipe so as to ensure that the inner side wall of the attaching groove is attached to the outer peripheral wall of the heat exchange pipe; the heat exchange tubes with different pipe diameters are adapted to the attached cushions of different models, so that the consistency of the shape and the size of the mounting seat is maintained, and the mounting seat is convenient to produce, process, store and manage.
Optionally, each mounting seat is connected with the foundation pile in a sliding manner along the length direction of the foundation pile; and a fixing piece for fixing the mounting seat is arranged between the mounting seat and the foundation pile.
By adopting the technical scheme, constructors can adjust the position of the mounting seat according to requirements; the number of foundation piles in each pile hole is generally multiple, and all the foundation piles are fixedly connected end to end; after the foundation pile positioned at the top is inserted into the pile hole, constructors need to cut off the redundant part of the foundation pile according to design requirements; at the moment, the constructor can move the mounting seat to the position below the position close to the position to be cut off so as to fix the heat exchange tube, reduce the possibility of disorder of the heat exchange tube and facilitate the arrangement and connection operation of the ground or indoor heat exchange tube at the later stage.
Optionally, a slide rail is embedded in the foundation pile at the position of each heat exchange tube, and a sliding groove is formed in the slide rail along the length direction of the foundation pile; each mounting seat is fixedly provided with a sliding block which is used for sliding matching with the corresponding sliding groove; the fixed part comprises a fixed screw rod which is in threaded connection with the corresponding sliding block so as to tightly abut against the sliding rail; the slide rail is provided with a yielding notch for inserting the sliding block into the sliding groove.
By adopting the technical scheme, the sliding rail provided with the sliding groove can be embedded in the foundation pile in a mode of being integrally cast and formed with the foundation pile; when the pile is manufactured, an operator firstly welds and fixes the slide rail and the steel reinforcement framework of the foundation pile, and makes the side wall of one side of the slide rail, which is provided with the sliding groove, be attached to the inner side wall of the foundation pile mould, and finally concretes, and places the mould on a centrifugal device for centrifugal operation; the slide rail is embedded in the foundation pile, so that the influence on the foundation pile production process and the mold for foundation pile production is small, and the foundation pile is convenient to produce and process. On the other hand, the sliding block can be inserted into the sliding groove through the abdicating notch; after the foundation pile enters the field, constructors can insert the sliding block into the sliding groove; when the foundation piles are transported, the mounting seats are detached, so that the flatness of the outer walls of the foundation piles is guaranteed, and the foundation piles are stacked and transported conveniently; meanwhile, constructors can adjust the number of the installation seats according to the type of the heat exchange tubes, and construction cost is reduced.
In a second aspect, the application provides a construction method for a structure of a ground source heat pump pouring pile, which adopts the following technical scheme:
a construction method of a ground source heat pump pouring pile structure comprises the following steps:
drilling: drilling a pile planting hole for installing a foundation pile at a specified place;
bottom expanding: enlarging the inner diameter of the bottom position of the pile planting hole and forming a pile end hole;
grouting: cement paste is injected into the pile planting hole;
pile hoisting: hoisting the foundation pile to the position right above the pile planting hole;
installing a heat exchange assembly: the two heat exchange tubes are connected through a connecting bent tube; the heat exchange tube is fixed with the foundation pile through the matching of the mounting seat and the compression plate;
pile setting: and (5) lowering the foundation pile into the pile planting hole.
By adopting the technical scheme, the foundation pile is buried underground in a pre-drilling manner, the process is simple, and the operation is convenient; compared with a hammering method and a static pressure method, the method is beneficial to reducing the risk of damaging the heat exchange tube due to the extrusion of soil; simultaneously, be favorable to reducing construction noise, reduce foundation pile or heat exchange tube and take place the risk of damaging because of the earth resistance is too big.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the heat exchange tubes are relatively separated from the foundation piles, so that the number of joints of the heat exchange tubes is reduced, and the sealing performance of the heat exchange tubes is improved; the mounting seat is matched with the pressing plate, the heat exchange tube is fixedly connected with the foundation pile, and the heat exchange tube sinks to the underground along with the foundation pile, so that the structure is simple, and the operation is convenient and labor-saving;
2. the slide rail is embedded in the foundation pile and provided with the abdicating notch, so that the influence on the foundation pile production process is favorably reduced, and the production and the processing of the foundation pile are facilitated;
3. the foundation pile is buried underground through the mode of pre-drilling, and convenient operation is favorable to reducing the risk of damaging the heat exchange tube because of the extrusion of earth.
Drawings
Fig. 1 is an overall schematic diagram of a structure of a ground source heat pump irrigation pile according to an embodiment of the present application.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an exploded view for illustrating a connection structure between the fitted cushion and the mount.
Fig. 4 is a schematic sectional view taken along line B-B in fig. 3.
Fig. 5 is a schematic view for showing a connection structure between a mount and a foundation pile.
Fig. 6 is a block flow diagram of a construction method of a structure of a ground source heat pump pouring pile according to an embodiment of the present application.
Description of reference numerals:
1. foundation piles; 11. a slide rail; 111. a sliding groove; 112. a abdication gap; 2. a heat exchange pipe; 21. connecting a bent pipe; 3. a mounting seat; 31. mounting grooves; 311. attaching a cushion; 3111. a fitting groove; 3112. fixing the bump; 312. fixing the slot; 32. a compression plate; 321. a pin shaft; 33. a fixing assembly; 331. connecting blocks; 3311. a fixing hole; 332. fixing the rod; 3321. a guide surface; 34. connecting grooves; 341. a sliding hole; 3411. an elastic member; 35. a butting block; 36. a sliding block; 361. and fixing the screw rod.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses a structure of a ground source heat pump irrigation pile. Referring to fig. 1, a ground source heat pump irrigation pile structure comprises a foundation pile 1 and a plurality of heat exchange assemblies. The number of the foundation piles 1 is multiple, and all the foundation piles 1 are connected end to end and welded and fixed; all the heat exchange assemblies are sequentially arranged on the peripheral wall of the foundation pile 1 at intervals along the circumferential direction of the foundation pile 1. The heat exchange assembly comprises two heat exchange tubes 2, and the length directions of the two heat exchange tubes 2 are both arranged along the length direction of the foundation pile 1; in this embodiment, the two heat exchange tubes 2 are arranged in parallel with each other. The lower ends of the two heat exchange tubes 2 are positioned at the lower end of the foundation pile 1 at the lowest part, and a connecting bent tube 21 is connected between the lower ends of the two heat exchange tubes 2; one end of the connection bent pipe 21 is sleeved on the peripheral wall of one of the heat exchange pipes 2 and is fixedly bonded with the other end of the connection bent pipe 21, and the other end of the connection bent pipe 21 is sleeved on the peripheral wall of the other heat exchange pipe 2 and is fixedly bonded with the other end of the connection bent pipe.
Referring to fig. 1 and 2, a plurality of installation seats 3 are arranged between each heat exchange tube 2 and the foundation pile 1, and all the installation seats 3 are sequentially arranged at intervals along the length direction of the corresponding heat exchange tube 2. One side of the mounting seat 3, which is far away from the foundation pile 1, is provided with a mounting groove 31, and the corresponding heat exchange tube 2 is positioned in the mounting groove 31; a fitting cushion 311 is arranged between the inner side wall of the mounting groove 31 and the heat exchange tube 2. The mounting base 3 is provided with a pressing plate 32; one end of the pressure strip 32 is rotatably connected with the mounting base 3 through a pin 321, the pin 321 is axially arranged along the length direction of the heat exchange tube 2, and one end of the pressure strip 32, which is far away from the pin 321, can bypass the heat exchange tube 2 and rotate towards the mounting base 3. A fixing component 33 is arranged between one end of the pressing plate 32 far away from the pin shaft 321 and the mounting seat 3 to fix the pressing plate 32, and at the moment, the pressing plate 32 tightly supports the heat exchange tube 2 towards the side wall of the mounting seat 3 direction, so that the heat exchange tube 2 tightly supports the attaching cushion 311, and the heat exchange tube 2 is fixed, so that the heat exchange tube 2 can be inserted into the ground along with the sinking of the foundation pile 1.
Referring to fig. 2 and 3, the material of the attaching cushion 311 may be a soft plastic material, and the material of the attaching cushion 311 may also be a rubber or silicone material; in this embodiment, the material of the bonding pad 311 is rubber. The side wall of the attaching cushion 311 facing the direction of the heat exchange tube 2 is provided with an attaching groove 3111; the heat exchange tube 2 is located laminating groove 3111, and the laminating groove 3111's inside wall and the laminating of heat exchange tube 2's periphery wall to increase the area of contact between heat exchange tube 2 and the laminating cushion 311. One side of the fitting cushion 311 away from the fitting groove 3111 is integrally connected with a fixed bump 3112; the inner side wall of the mounting groove 31 is provided with a fixing slot 312. Fixed lug 3112 and fixed slot 312 are pegged graft the cooperation, and laminating cushion 311 can be dismantled with mount pad 3 and be connected, simple structure, simple operation.
Referring to fig. 3 and 4, the fixing assembly 33 includes a connecting block 331 and a fixing rod 332. The connecting block 331 is welded and fixed to the side wall of the pressing plate 32 facing the mounting seat 3, and the connecting block 331 is located at one end of the pressing plate 32 away from the pin 321. One end of the mounting base 3, which is far away from the pin shaft 321, is provided with a connecting groove 34; when the pressing plate 32 abuts against the heat exchange tube 2, the connecting block 331 is inserted into the connecting groove 34. The inner side wall of the connecting groove 34 is provided with a sliding hole 341, one end of the sliding hole 341 far away from the connecting groove 34 is arranged in a penetrating way, and the sliding hole 341 is communicated with the outer wall of the mounting seat 3. The fixing rod 332 is inserted into the sliding hole 341, and the fixing rod 332 is slidably connected with the inner side wall of the sliding hole 341. The connecting block 331 is provided with a fixing hole 3311 along the axial direction of the sliding hole 341 and the side wall close to one side of the sliding hole 341; when the connecting block 331 is inserted into the connecting groove 34, the fixing rod 332 may be aligned with the fixing hole 3311, and at this time, an end of the fixing rod 332 near the connecting groove 34 may be inserted into the fixing hole 3311 to fix the connecting block 331, thereby fixing the pressing plate 32.
Referring to fig. 4, a guide surface 3321 is formed at one end of the fixed rod 332 close to the connecting slot 34, the guide surface 3321 is inclined, and the guide surface 3321 is located at one side of the fixed rod 332 far away from the bottom wall of the connecting slot 34. Connecting block 331 is to connecting groove 34 in-process of inserting, and connecting block 331 can with the spigot surface 3321 butt to drive dead lever 332 to slide in the groove 111 that slides, thereby be convenient for connecting block 331 to insert establish to connecting groove 34 in, need not the staff and stir dead lever 332, convenient operation, laborsaving.
Referring to fig. 4, the inner sidewall of the sliding hole 341 is connected with the abutting block 35, and the abutting block 35 is located on a side of the fixing rod 332 away from the connecting groove 34. In this embodiment, the abutting block 35 is located on the side wall of the mounting seat 3 communicating with the sliding hole 341, and the abutting block 35 is detachably connected with the mounting seat 3 through a screw to block the sliding hole 341. The sliding hole 341 is provided with an elastic member 3411 therein, and in this embodiment, the elastic member 3411 includes a spring. The elastic member 3411 is located between the fixing rod 332 and the abutment block 35; one end of the elastic member 3411 is welded to the fixing rod 332, and the other end of the elastic member 3411 is welded to the abutment block 35. When the fixing rod 332 moves into the sliding hole 341 due to the abutment of the connecting block 331, the elastic member 3411 is in a compressed state; at this time, when the fixing rod 332 is aligned with the fixing hole 3311, the elastic member 3411 may drive the fixing rod 332 to be automatically inserted into the fixing hole 3311.
Referring to fig. 1 and 5, a slide rail 11 is integrally cast at a position of each heat exchange tube 2 of the foundation pile 1, and the slide rail 11 is embedded in the outer peripheral wall of the foundation pile 1. The length direction of slide rail 11 sets up along the length direction of foundation pile 1, and the lateral wall of slide rail 11 near the one side of the periphery wall of foundation pile 1 has seted up sliding groove 111, and sliding groove 111 is the dovetail.
Referring to fig. 4 and 5, each mounting seat 3 is welded and fixed with a sliding block 36, the sliding block 36 is a dovetail block, each sliding block 36 is located in a sliding groove 111, and each sliding block 36 is connected with the inner side wall of the sliding groove 111 in a sliding manner; the sliding block 36 is matched with the sliding groove 111, and an operator can freely adjust the position of each mounting seat 3 according to actual needs.
Referring to fig. 5, a fixing member including a fixing screw 361 is provided between each mounting seat 3 and foundation pile 1. The fixed screw 361 penetrates through the corresponding sliding block 36 along the depth direction of the sliding groove 111 and is in threaded connection with the sliding block 36; by rotating the fixing screw 361, one end of the fixing screw 361 close to the bottom wall of the sliding groove 111 can be tightly abutted against the bottom wall of the sliding groove 111 to fix the sliding block 36, thereby fixing the mounting base 3.
Referring to fig. 5, the slide rail 11 is provided with an abdicating notch 112, and the abdicating notch 112 is located on a side wall of the slide rail 11 close to the outer peripheral wall of the foundation pile 1. In this embodiment, the receding gap 112 is located at one end of the slide rail 11. The abdication gap 112 is communicated with the sliding groove 111, and the sliding block 36 can move out of the abdication gap 112 or move into the sliding groove 111, so as to facilitate the dismounting and mounting operations of the mounting seat 3 and the foundation pile 1.
The implementation principle of the structure of the ground source heat pump irrigation pile in the embodiment of the application is as follows:
when in use, a constructor inserts the sliding block 36 into the sliding groove 111 through the abdicating notch 112 to install the installation seat 3; the heat exchange tube 2 is fixed on the outer peripheral wall of the foundation pile 1 through the matching of the mounting seat 3 and the pressing plate 32, so that the heat exchange tube 2 and the foundation pile 1 can be relatively separated into independent individuals, and the number of joints of the heat exchange tube 2 is reduced; meanwhile, the operation space for installing the heat exchange tube 2 is increased, so that the connection tightness of the heat exchange tube 2 is ensured, and the installation quality of the heat exchange tube 2 is improved.
The embodiment of the application also discloses a construction method of the structure of the ground source heat pump pouring pile, which comprises the following steps:
referring to fig. 6, a construction method of a structure of a ground source heat pump pouring pile includes the following steps:
s1: drilling: a constructor carries out drilling operation at a preset place through a drilling machine so as to drill a pile planting hole; in the drilling process, water is injected into the hole at the same time, so that the soil and the water in the hole are mixed into slurry;
s2: bottom expanding: a constructor installs a bottom-expanding drill bit at the bottom of a drill rod of a drilling machine so as to further process the bottom of a planted pile hole and increase the inner diameter of the bottom of the planted pile hole; forming a pile end hole after the bottom of the pile planting hole is processed;
s3: grouting: a constructor injects cement paste into the pile end hole through a pipeline, and a drill rod of a drilling machine moves up and down at the same time so that the cement paste is fully sunk and the mud in the pile end hole is replaced, so that the cement paste is fully filled in the pile end hole;
after the pile end hole is grouted, the constructor continuously injects cement paste into the pile planting hole above the pile end hole and stirs the cement paste evenly, the injection amount of the cement paste is V,
v = (volume of pile planting hole-volume of pile end hole-volume of foundation pile) × k
Wherein the value range of k is 20 to 50 percent; in this embodiment, k takes a value of 30%;
s4: pile hoisting: a constructor transfers the foundation pile to a position right above the pile planting hole through a crane;
s5: installing a heat exchange assembly: a constructor fixedly connects one ends of the two heat exchange tubes with each other through a connecting elbow, then places the heat exchange tubes between the corresponding mounting seats and the pressing plates, and finally rotates the pressing plates so that connecting blocks of the pressing plates are inserted into the connecting grooves, and the fixing rods are inserted into the fixing holes;
s6: pile setting: a constructor operates the crane to enable the foundation pile to move downwards slowly, and meanwhile, the constructor unreels the heat exchange tube slowly; when the mounting seat moves to a position close to the hole opening of the pile planting hole along with the foundation pile, stopping the foundation pile from being placed, fixing the heat exchange tube with the mounting seat, and continuing to place the foundation pile;
the above operation is repeated to sufficiently fix the heat exchange pipe with the foundation pile.
When the upper end of one section of foundation pile is lowered to the position of the hole opening of the pile planting hole, a constructor temporarily fixes the foundation pile, then transfers the other section of foundation pile to the position right above the pile planting hole, and fixedly connects the two sections of foundation pile in a welding mode; and repeating the operation of the step S6 until the foundation pile positioned at the lowest part is lowered to the bottom of the pile end hole and the upper end of the foundation pile positioned at the uppermost part protrudes out of the pile planting hole, namely the construction is finished.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a structure of ground source heat pump watering stake which characterized in that: the heat exchange device comprises a foundation pile (1) and a plurality of heat exchange assemblies which are sequentially arranged outside the foundation pile (1) along the circumferential direction of the foundation pile (1); each heat exchange assembly comprises two heat exchange tubes (2), the length directions of the two heat exchange tubes (2) are arranged along the length direction of the foundation pile (1), and one ends of the two heat exchange tubes (2) close to the lower end of the foundation pile (1) are fixedly connected with a connecting bent tube (21) together; a plurality of mounting seats (3) are arranged between each heat exchange tube (2) and the foundation pile (1), and each mounting seat (3) is fixedly connected with the foundation pile (1); the mounting seat (3) is provided with a mounting groove (31) for embedding the heat exchange tube (2); the mounting seat (3) is rotatably provided with a pressing plate (32) used for pressing the heat exchange tube (2), and a fixing assembly (33) used for fixing the pressing plate (32) is arranged between the pressing plate (32) and the mounting seat (3).
2. The structure of a ground source heat pump irrigation pile as claimed in claim 1, wherein: fixed subassembly (33) including with pressure strip (32) fixed connection's connecting block (331) and with dead lever (332) of mount pad (3) sliding connection, connecting block (331) are provided with and are used for supplying fixed rod (332) one end to insert fixed orifices (3311) of establishing.
3. The structure of a ground source heat pump irrigation pile as claimed in claim 2, wherein: the mounting seat (3) is provided with a connecting groove (34) for the connecting block (331) to be embedded, the inner side wall of the connecting groove (34) is provided with a sliding hole (341), and the fixing rod (332) is connected with the inner side wall of the sliding hole (341) in a sliding manner; one end of the sliding hole (341) far away from the connecting groove (34) is arranged in a penetrating mode.
4. The structure of ground source heat pump irrigation pile according to claim 3, characterized in that: the inner side wall of the sliding groove (111) on one side of the fixed rod (332) far away from the connecting groove (34) is connected with a butting block (35); an elastic piece (3411) used for driving the fixed rod (332) to move towards the direction of the connecting groove (34) is arranged between the fixed rod (332) and the abutting block (35); one end of the fixed rod (332), which is far away from the elastic piece (3411), is obliquely provided with a guide surface (3321), and the guide surface (3321) is positioned on one side, which is far away from the bottom wall of the connecting groove (34), of the fixed rod (332).
5. The structure of the ground source heat pump irrigation pile as claimed in claim 4, wherein: the abutting block (35) is detachably connected with the mounting seat (3); one end of the elastic piece (3411) is fixedly connected with the fixing rod (332), and the other end of the elastic piece (3411) is fixedly connected with the abutting block (35).
6. The structure of a ground source heat pump irrigation pile as claimed in claim 1, wherein: the inside wall of mounting groove (31) is provided with laminating cushion (311), laminating cushion (311) are provided with laminating groove (3111) that are used for placing heat exchange tube (2), the inside wall of laminating groove (3111) sets up with the periphery wall laminating of heat exchange tube (2).
7. The structure of ground source heat pump irrigation pile according to claim 6, characterized in that: laminating cushion (311) is fixed and is provided with fixed lug (3112), the inside wall of mounting groove (31) is provided with and is used for supplying fixed lug (3112) to inlay fixed slot (312).
8. The structure of a ground source heat pump irrigation pile as claimed in claim 1, wherein: each mounting seat (3) is connected with the foundation pile (1) in a sliding manner along the length direction of the foundation pile (1); and a fixing piece for fixing the mounting seat (3) is arranged between the mounting seat (3) and the foundation pile (1).
9. The structure of a ground source heat pump irrigation pile as claimed in claim 8, wherein: sliding rails (11) are embedded in the positions, located on the heat exchange tubes (2), of the foundation piles (1), and sliding grooves (111) are formed in the sliding rails (11) along the length direction of the foundation piles (1); each mounting seat (3) is fixedly provided with a sliding block (36) which is used for sliding fit with the corresponding sliding groove (111); the fixed part comprises a fixed screw (361) which is in threaded connection with the corresponding sliding block (36) to tightly abut against the sliding rail (11); the sliding rail (11) is provided with an abdicating notch (112) for the sliding block (36) to be inserted into the sliding groove (111).
10. A construction method of a ground source heat pump irrigation pile structure as claimed in any one of claims 1 to 9, characterized in that: the method comprises the following steps:
drilling: drilling a pile planting hole for installing a foundation pile (1) at a designated place;
bottom expanding: enlarging the inner diameter of the bottom position of the pile planting hole and forming a pile end hole;
grouting: cement paste is injected into the pile planting hole;
pile hoisting: hoisting the foundation pile (1) to the position right above the pile planting hole;
installing a heat exchange assembly: the two heat exchange tubes (2) are connected through a connecting bent tube (21); the heat exchange tube (2) is fixed with the foundation pile (1) through the matching of the mounting seat (3) and the compression plate (32);
pile setting: and (3) putting the foundation pile (1) into the pile planting hole.
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| CN202111019815.0A CN113718755A (en) | 2021-09-01 | 2021-09-01 | Ground source heat pump pouring pile structure and construction method thereof |
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| CN202111019815.0A CN113718755A (en) | 2021-09-01 | 2021-09-01 | Ground source heat pump pouring pile structure and construction method thereof |
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