CN210529682U - Precast tubular pile with W-shaped heat exchange tube - Google Patents
Precast tubular pile with W-shaped heat exchange tube Download PDFInfo
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- CN210529682U CN210529682U CN201921193578.8U CN201921193578U CN210529682U CN 210529682 U CN210529682 U CN 210529682U CN 201921193578 U CN201921193578 U CN 201921193578U CN 210529682 U CN210529682 U CN 210529682U
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- tubular pile
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- pile
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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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Abstract
The utility model belongs to the technical field of building pile foundations and ground source heat pumps, in particular to a precast tubular pile with W-shaped heat exchange tubes, which comprises at least one section of tubular pile and two heat exchange tubes arranged in the tubular pile, wherein the bottom of the tubular pile is welded with an annular steel plate, two groups of fixed pulleys are symmetrically arranged on the inner diameter of the annular steel plate, the top of the tubular pile is provided with a horizontally placed fixed reinforcing bar, one end of each heat exchange tube is fixed on the fixed reinforcing bar, the other end is respectively provided with a stay cord, each heat exchange tube forms the U-shaped heat exchange tube after respectively bypassing the fixed pulleys through the stay cord and fixes the other end of the stay cord and the heat exchange tube on the fixed reinforcing bar, one end of the stay cord of the two heat exchange tubes is respectively communicated with the two heat exchange tubes through a horizontal, can be arranged along the whole length of the pile body and has high survival rate of the buried pipe.
Description
Technical Field
The invention belongs to the technical field of building pile foundations and ground source heat pumps, and particularly relates to a precast tubular pile with W-shaped heat exchange tubes.
Background
The ground source heat pump technology is an efficient and energy-saving air conditioner cold and heat source technology by utilizing shallow geothermal energy to heat and refrigerate buildings on the upper part; the heat exchange tube of the traditional ground source heat pump technology needs additional drilling holes for embedding, the occupied underground space is large, and the construction cost is high, so that engineering technicians combine a building pile foundation with the heat exchange tube of the ground source heat pump, and the pile-embedded tube type energy pile is provided. The pile-embedded pipe type energy pile takes a pile foundation as a carrier of a heat exchange pipeline, not only plays a role of bearing the load of an upper building, but also realizes the function of heat exchange with shallow geothermal resources. According to the difference of pile foundation construction process, the pile pipe laying ground source heat pump technology mainly includes: burying in the cast-in-situ bored pile and burying in the precast tubular pile.
The patent document with the application number of 201310442139.7 discloses a manufacturing method for embedding heat exchange tubes in a pile body of a precast pile in the prefabricating process, solid steel bars are used as prestressed main reinforcements of the precast pile, hollow steel tubes are used as carriers for embedding the heat exchange tubes, and therefore the problems of mutual interference, concrete compactness, influence on integral bearing capacity of a pile foundation and the like caused by binding and embedding of the heat exchange tubes and the main reinforcements are solved, but the precast pile is prefabricated in the method with high difficulty, and the technical problem that pile connection of pipe sections is relatively complex exists; the application number 201510057071.X discloses a construction method for embedding a heat exchange tube in a hollow pile core, which effectively solves the problems of control of the depth of the embedded tube and influence on heat exchange efficiency due to difficulty in controlling the backfill compactness in the backfill process of a soil body in the pile core, but a plurality of cuffs, fixed pulleys and baffles at the bottom of the pile are required to be arranged on the inner side wall of the pile core before prefabrication of the hollow pile.
Disclosure of Invention
The invention aims to provide a prefabricated pipe pile with a W-shaped heat exchange tube, which is stable, reliable, economical and efficient.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a precast tubular pile with W type heat exchange pipe, includes an at least section tubular pile and locates two heat exchange pipes in the tubular pile, the welding of tubular pile bottom has annular steel sheet, and the symmetry is provided with two sets of fixed pulleys on the annular steel sheet internal diameter, the tubular pile top is provided with the fixed reinforcement that a level was placed, and on every heat exchange pipe one end was fixed in the fixed reinforcement, be equipped with a stay cord on the other end respectively, every heat exchange pipe formed U type heat exchange pipe after bypassing the fixed pulley respectively through the stay cord and was fixed in the fixed reinforcement with stay cord and heat exchange pipe other end, and the one end at two heat exchange pipe stay cords places forms the heat exchange pipe of W type with.
Further, the cross section of the tubular pile is circular, the outer diameter of the tubular pile is 500-800 mm, the inner diameter of the tubular pile is 300-600 mm, the height of each section of tubular pile is 6-15 m, and the tubular pile is formed by pouring prestressed concrete.
Further, the fixed pulley is installed on the fixed pulley frame, the fixed pulley frame is L shaped steel muscle support, and its bottom and annular steel sheet fixed weld, upper portion horizontal part and tubular pile inner wall fixed connection, fixed pulley fixed set up in the horizontal end department of L shaped steel muscle support, and the fixed pulley frame symmetry of two sets of fixed pulleys sets up.
Furthermore, the heat exchange tubes are respectively provided with pull rings, and pull ropes are arranged on the pull rings.
Further, the heat exchange tube is a heat-resistant polyethylene tube.
A construction method of a precast tubular pile with a W-shaped heat exchange tube comprises the following steps:
(1) embedding heat exchange tubes: before pile sinking construction, firstly placing a manufactured annular steel plate with a pulley yoke in a bottom pile core of a bottom-most pipe pile, then respectively penetrating two heat exchange tubes into the pile core at the top end of the pile, penetrating two groups of fixed pulleys on the bottom steel plate of the pile when the two heat exchange tubes reach the bottom end of the pile, then pulling the heat exchange tubes to the top of the pile by pull ropes fixed on the heat exchange tubes to form two U-shaped heat exchange tubes, finally connecting the two heat exchange tubes in series by using a connector to finally form a W-shaped buried tube form, and arranging a fixed steel bar at the top end of the pile for fixing the heat exchange tubes;
(2) after the heat exchange tubes in the pile core of the first section of tubular pile are embedded, welding and fixing the annular steel plate at the bottom end of the pile at the bottom of the pile;
(3) pile sinking: pressing a first section of pipe pile into a soil body by using a static pressure or vibration method, after the construction of the first section of pipe pile is completed, moving a second section of pipe pile to the top of the first section of pipe pile, pulling a heat exchange pipe from the second section of pipe pile to the pile top through a pull rope, welding two sections of pipe piles together after the axes of the pile bodies are confirmed to be consistent, and then pressing the second section of pipe pile into the soil body;
(4) repeating the steps (1) to (3) to complete the pile section construction of all the tubular piles, fixing the pull rope with the pile end of the top tubular pile, and fixing the W-shaped heat exchange pipe by the fixing steel bar;
(5) after the construction of a plurality of tubular pile sections and the heat exchange tubes is finished, water is introduced into the heat exchange tubes for debugging, the sealing performance of the buried heat exchange tubes is checked, the construction of the whole heat exchange tubular pile is finished, and the pile cores are tightly filled with high-strength cement mortar after the pile pressing is finished.
Further, the pulley yoke is tightly attached to the inner wall of the tubular pile in the step (1).
Further, fixed reinforcing bar is single or two of cross arrangement, and fixed reinforcing bar diameter is 10 ~ 20mm, fixed reinforcing bar and the top welded fastening of top tubular pile.
The utility model has the advantages that:
1. the heat exchange pipe is embedded simply in the construction process, and only the annular steel plate is welded at the bottom of the pile, so that the damage to the pile body (bearing capacity and integrity) is basically avoided;
2. the pulley yoke is welded on the steel plate at the bottom of the pile, and the two U-shaped heat exchange tubes are fixed at the bottom of the pile through the fixed pulley, so that the method can lead the heat exchange tubes to be arranged along the whole length of the pile body, and solves the problem that the heat exchange tubes can not be arranged to the effective design depth due to the slurry in the pile body in the prior art;
3. the heat exchange tube is arranged in the pile core in advance before pile pressing, and is fixed well through the steel plate pulley yoke at the bottom of the pile, so that the problem of extrusion damage of a soil body to the heat exchange tube caused by simultaneous construction of the heat exchange tube and the pile pressing in the prior art is solved;
4. the utility model discloses leave the round hole at pile bottom welded annular steel sheet center, can make the soil body get into the stake core at the pile pressing in-process, consequently overcome among the prior art not easily controlled closely knit degree of backfilling of stake core soil body backfill process to influence heat exchange efficiency's problem.
Drawings
Fig. 1 is a schematic diagram of the manufacturing process of the ring-shaped steel plate pulley yoke at the bottom of the pile according to the present invention (the manufacturing sequence diagram is along the arrow direction);
fig. 2 is a schematic plan view of a single fixing steel bar or two fixing steel bars arranged in a cross manner on the pile top of the present invention;
FIG. 3 is a schematic plan view of a ring-shaped steel plate welded to the bottom of a middle pile according to the present invention;
fig. 4 is a schematic view showing the burying process of the W-shaped heat exchange tubes in the precast tubular pile according to the present invention (the burying sequence of the heat exchange tubes in the direction of the arrows).
1. A ring-shaped steel plate; 2. a fixed pulley; 3. a fixed pulley frame; 4. a heat exchange tube; 5. a tubular pile; 6. a pull ring; 7. pulling a rope; 8. an interface; 9. and fixing the steel bars.
Detailed Description
As shown in the figure, a precast tubular pile with W type heat exchange pipe, include at least a lesson tubular pile 5 and locate two hot exchange pipe 4 in tubular pile 5, the welding of tubular pile 5 bottom has annular steel sheet 1, and the symmetry is provided with two sets of fixed pulleys 2 on the 1 internal diameter of annular steel sheet, tubular pile 5 top is provided with the fixed reinforcement 9 that a level was placed, and every hot exchange pipe 4 one end is fixed in on fixed reinforcement 9, is equipped with a stay cord 7 on the other end respectively, and every hot exchange pipe 4 is walked around respectively through stay cord 7 and is formed U type heat exchange pipe 4 and be fixed in fixed reinforcement 9 with stay cord 7 and hot exchange pipe 4 other end behind fixed pulley 2 on, and fixed reinforcement 9 can be preferred to arrange for two of single or cross arrangement for the internal hot exchange pipe of fixed pile, and bear the dead weight of hot exchange pipe self and heat transfer liquid during the use, and the one end at two A W-shaped heat exchange tube; the cross section of the tubular pile 5 is circular, the outer diameter of the tubular pile 5 is 500-800 mm, the inner diameter of the tubular pile 5 is 300-600 mm, the height of each section of tubular pile 5 is 6-15 m, and the tubular pile 5 is formed by pouring prestressed concrete; fixed pulley 2 installs on fixed pulley frame 3, fixed pulley frame 3 is L shaped steel muscle support, its bottom and 1 fixed weld of annular steel sheet, upper portion horizontal part and 5 inner wall fixed connection of tubular pile, and fixed pulley 2 is fixed to be set up in the fixed horizontal end department that sets up in L shaped steel muscle support in the horizontal part, and the 3 symmetries of fixed pulley frame of two sets of fixed pulley 2 set up, be provided with pull ring 6 on the hot exchange pipe 4 respectively, be provided with stay cord 7 on the pull ring 6, it is further, hot exchange pipe 4 is heat-resisting polyethylene pipe, and its heat resistance is good, and the heat conductivity is high, and this tubular product flexibility is easily buckled greatly.
A construction method of a precast tubular pile with a W-shaped heat exchange tube comprises the following steps: (1) embedding heat exchange tubes: before pile sinking construction, firstly placing a manufactured annular steel plate 1 with a pulley yoke 3 in a bottom pile core of a bottom-most pipe pile 5, wherein the pulley yoke 3 needs to be arranged close to the inner wall of the pipe pile, then respectively penetrating two heat exchange tubes 4 into the pile core at the top end of the pile, penetrating two groups of fixed pulleys 2 on the bottom steel plate when reaching the bottom end of the pile, then pulling the heat exchange tubes 4 to the top of the pile by pull ropes 7 fixed on the heat exchange tubes 4 to form two U-shaped heat exchange tubes 4, and finally connecting the two heat exchange tubes in series by using a connector 8 to finally form a W-shaped buried tube form, wherein the top end of the pile is provided with a fixed steel bar 9 for fixing the heat exchange tubes 4; (2) after the first section of tubular pile 5 is embedded with the heat exchange tube 4 in the pile core, welding and fixing the annular steel plate 1 at the bottom end of the pile at the bottom of the pile; (3) pile sinking: pressing a first section of tubular pile 5 into a soil body by using a static pressure or vibration method, after the construction of the first section of tubular pile is completed, moving a second section of tubular pile to the top of the first section of tubular pile, pulling a heat exchange tube 4 from the second section of tubular pile to the pile top through a pull rope 7, welding two sections of tubular piles together after the axes of pile bodies are confirmed to be consistent, and pressing the second section of tubular pile into the soil body; (4) repeating the steps (1) to (3) to complete pile section construction of all the tubular piles, fixing the pull rope 7 with the pile end of the topmost tubular pile 5, and fixing the W-shaped heat exchange tube 4 by the fixing steel bar 9; (5) after accomplishing the construction of many tubular pile 5 pile knots and hot exchange pipe 4, carry out water-conducting debugging to hot exchange pipe 4, the leakproofness of hot exchange pipe 4 that the inspection buries, accomplish whole hot exchange pipe 4's construction, because only partial soil body is filled the central round hole that gets into the stake core through pile bottom ring type steel sheet among the pile pressing process, consequently after accomplishing the construction of many tubular pile knots, utilize the cement mortar of high strength to pack the inside residual space of tubular pile closely knit with reinforcing heat transfer effect, it is further, fixed reinforcing bar is single or cross arrangement's two, and fixed reinforcing bar diameter is 10 ~ 20mm, fixed reinforcing bar and the top welded fastening of tubular pile top, the utility model discloses construction operation is simpler, and engineering efficiency is high, and required expense is few, can follow the pile body through length and arrange and bury a tub survival rate height.
Claims (7)
1. The utility model provides a precast tubular pile with W type heat exchange tube which characterized in that: including an at least section tubular pile and two hot exchange pipes of locating in the tubular pile, the welding of tubular pile bottom has annular steel sheet, and the symmetry is provided with two sets of fixed pulleys on the annular steel sheet internal diameter, the tubular pile top is provided with the fixed reinforcement that a level was placed, and on every hot exchange pipe one end was fixed in the fixed reinforcement, was equipped with a stay cord on the other end respectively, and every hot exchange pipe forms the hot exchange pipe of U type and is fixed in the fixed reinforcement with stay cord and hot exchange pipe other end after bypassing the fixed reinforcement respectively through the stay cord, and the one end at two hot exchange pipe stay cords places is respectively through the hot exchange pipe of horizontal interface.
2. The precast tubular pile with W-shaped heat exchanging tubes as recited in claim 1, wherein: the cross section of tubular pile is circular, and the tubular pile external diameter is 500 ~ 800mm, and the internal diameter is 300 ~ 600mm, and every section tubular pile height is 6 ~ 15m, and the tubular pile is formed by prestressed concrete pouring.
3. The precast tubular pile with W-shaped heat exchanging tubes as recited in claim 2, wherein: the fixed pulley is installed on the fixed pulley frame, the fixed pulley frame is L shaped steel muscle support, its bottom and annular steel sheet fixed welding, upper portion horizontal part and tubular pile inner wall fixed connection, and the fixed pulley is fixed to be set up in L shaped steel muscle support's horizontal end department, and the fixed pulley frame symmetry of two sets of fixed pulleys sets up.
4. The precast tubular pile with W-shaped heat exchanging tubes as recited in claim 3, wherein: the heat exchange tubes are respectively provided with pull rings, and pull ropes are arranged on the pull rings.
5. The precast tubular pile with W-shaped heat exchanging tubes as recited in claim 4, wherein: the heat exchange tube is a heat-resistant polyethylene tube.
6. The precast tubular pile with W-shaped heat exchanging tubes as recited in claim 5, wherein: the fixed pulley frame is tightly attached to the inner wall of the tubular pile.
7. The precast tubular pile with W-shaped heat exchanging tubes as recited in claim 6, wherein: the fixed reinforcing bar is single or two of cross arrangement, and fixed reinforcing bar diameter is 10 ~ 20mm, the fixed reinforcing bar is fixed with the top welded fastening of top tubular pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921193578.8U CN210529682U (en) | 2019-07-26 | 2019-07-26 | Precast tubular pile with W-shaped heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921193578.8U CN210529682U (en) | 2019-07-26 | 2019-07-26 | Precast tubular pile with W-shaped heat exchange tube |
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| Publication Number | Publication Date |
|---|---|
| CN210529682U true CN210529682U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921193578.8U Expired - Fee Related CN210529682U (en) | 2019-07-26 | 2019-07-26 | Precast tubular pile with W-shaped heat exchange tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438977A (en) * | 2019-07-26 | 2019-11-12 | 河南理工大学 | A kind of prefabricated tubular pile and its construction method with W type heat-exchange tube |
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2019
- 2019-07-26 CN CN201921193578.8U patent/CN210529682U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438977A (en) * | 2019-07-26 | 2019-11-12 | 河南理工大学 | A kind of prefabricated tubular pile and its construction method with W type heat-exchange tube |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200515 Termination date: 20210726 |