CN205876388U - Grout system of backfilling of shaft in vertical heat exchanger - Google Patents

Grout system of backfilling of shaft in vertical heat exchanger Download PDF

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Publication number
CN205876388U
CN205876388U CN201620587902.4U CN201620587902U CN205876388U CN 205876388 U CN205876388 U CN 205876388U CN 201620587902 U CN201620587902 U CN 201620587902U CN 205876388 U CN205876388 U CN 205876388U
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CN
China
Prior art keywords
pipe
vertical
heat exchanger
grout
backfill
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620587902.4U
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Chinese (zh)
Inventor
刘志生
夏步长
赵志峰
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Qingjian Group Co Ltd
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Qingjian Group Co Ltd
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Filing date
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Priority to CN201620587902.4U priority Critical patent/CN205876388U/en
Application granted granted Critical
Publication of CN205876388U publication Critical patent/CN205876388U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a grout system of backfilling of shaft in vertical heat exchanger belongs to the well drilling technical field that creeping into of well is gone on simultaneously with the case. It has been solved back -filling way expense that prior art exists and higher and cause the problem of the waste of tubular product easily. The utility model discloses a system is including pipe laying, grout pipe and fixed bolster card vertically, and pipe laying and grout pipe fix on together through the fastening of fixed bolster chucking vertically, and the pipe laying includes inlet tube, outlet pipe and U -shaped pipe vertically, and the bottom of inlet tube and outlet pipe is connected with the U -shaped pipe, be provided with in the cavity of pipe laying vertically water and vertically the pipe laying port seal the setting. The utility model discloses a combine to water the operation during backfill, it is closely knit to divide a lot of to backfill, backfills with low costsly and is difficult for causing tubular product extravagant.

Description

The vertically grouting backfill system of vertical shaft in heat exchanger
Technical field
This utility model relates to the grouting backfill system of vertical shaft in vertical heat exchanger, belongs to creeping into of well same with setting of casing The drilling rig technical field of Shi Jinhang.
Background technology
" heat pump " is a kind of to obtain low grade heat energy from the empty gas and water of nature or soil, does work through electric power, will Low temperature heat energy is converted to high temperature heat, it is provided that can be by the device of the heat energy used by people.Earth source heat pump is to utilize shallow layer geothermal energy Carry out the new energy technology of heating refrigeration, be the one of heat pump.Soil source heat pump is a kind of form of earth source heat pump, is with the earth For Cooling and Heat Source, building is carried out air-conditioning technical cool in summer and warm in winter.Soil source heat pump also uses the huge accumulation of heat of underground and stores Cold energy power, transfers to heat in building from underground winter, and summer is that the cold of underground is transferred to building In, a year forms a cold cycling, and soil source heat pump improves the effective rate of utilization of the energy, is a kind of novel renewable Energy technology.
Prior art uses pressurization backfill.Backfill pump uses the column piston pump of import high pressure, position bottom hole note Enter that filler is the most counter to be filled out, progressively get rid of vertical shaft air, it is ensured that without backfill space, cavity, it is ensured that buried tube heat exchanger and soil It is fully contacted, it is ensured that heat-transfer effect, but this kind of back-filling way is costly, and easily cause the waste of tubing.
Utility model content
The purpose of this utility model is the drawbacks described above overcoming existing grouting backfill system to exist, it is proposed that a kind of vertical In heat exchanger, the grouting backfill system of vertical shaft, combines during by backfill and pours water operation, backfill closely knit several times, backfill low cost and Do not easily cause tubing waste.
This utility model is to use following technical scheme to realize: in a kind of vertical heat exchanger, the grouting backfill of vertical shaft is System, is fastened by fixed support clamping including Vertical pendulum tiltmeters, grout pipe and fixed support card, Vertical pendulum tiltmeters and grout pipe Together, Vertical pendulum tiltmeters includes that the bottom connection of water inlet pipe, outlet pipe and U-tube, water inlet pipe and outlet pipe has U-tube, perpendicular It is provided with water in the cavity of straight underground pipe and Vertical pendulum tiltmeters port sealing is arranged.
Further, fixed support card is uniformly arranged on Vertical pendulum tiltmeters and grout pipe, fixed support card at least provided with There are two.
Further, fixed support card is provided with one every 2-4m.
Further, the pretightning force of fixed support card ensures that Vertical pendulum tiltmeters is indeformable and holds in grout pipe filling process Easily.
Further, grout pipe is between the water inlet pipe and outlet pipe of Vertical pendulum tiltmeters, and the lower end of grout pipe is positioned at U-shaped Above pipe.
The beneficial effects of the utility model are: in vertical heat exchanger described in the utility model, the grouting backfill of vertical shaft is System, combines, during by backfill, operation of pouring water, backfills closely knit several times, backfills low cost and does not easily cause tubing waste.
Accompanying drawing explanation
Fig. 1 is the structural representation of grouting backfill system of the present utility model.
In figure: 1 water inlet pipe;2 outlet pipes;3U shape pipe;4 fixed support cards;5 backfill material;6 ports;7 grout pipes.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, the grouting backfill system of vertical shaft in a kind of vertical heat exchanger, including Vertical pendulum tiltmeters, grout pipe 7 and Together with fixed support card 4, Vertical pendulum tiltmeters and grout pipe 7 are tightly secured in by fixed support card 4, Vertical pendulum tiltmeters include into Water pipe 1, outlet pipe 2 and U-tube 3, the bottom of water inlet pipe 1 and outlet pipe 2 connects U-tube 3, sets in the cavity of Vertical pendulum tiltmeters It is equipped with water and Vertical pendulum tiltmeters port 6 seals and arranges;Fixed support card 4 is uniformly arranged on Vertical pendulum tiltmeters and grout pipe 7, Gu Fixed rack card 4 is at least provided with two, and fixed support card 4 is provided with one every 2-4m;The pretightning force of fixed support card 4 ensures Vertical pendulum tiltmeters is indeformable and in grout pipe 7 filling process easily;Grout pipe 7 is positioned at water inlet pipe 1 and the water outlet of Vertical pendulum tiltmeters Between pipe 2, the lower end of grout pipe 7 is positioned at above U-tube 3.
This utility model uses the method for machinery down tube.Before down tube, reply group carries out pressure testing, punching to good buried tube heat exchanger Wash, then 3 two ports 6 of U-tube are sealed, prevent foreign material from entering.After pressure test is qualified, grout pipe 7 is tied with U-tube 3 It is held together.Binding knot answers density moderate, should ensure that 3 pipes are the most curved, can not bundle again tension, increase grout pipe 7 and fill The difficulty promoted during slurry;U-tube 3 head is set up defences protection unit, to prevent the damage during down tube;U-tube 3 planted agent fills Full water, increases deadweight, reduces the buoyancy during down tube.When boring is good and after hole wall solidification, should down tube immediately.It is drilled It is unsuitable long that the time is shelved in hole, pore local stoppages the most likely occurs, causes down tube difficulty.Down tube speed is the most equal Even, damage support, scratch tubing during preventing down tube utility model.If meeting obstacle or the phenomenon that has some setbacks, suspend down tube, Down tube could be continued after ascertaining the reason and performing process.
Must assure that when transferring U-tube 3 that pipeline will not distort, deform.During down tube, should be by grout pipe 7 together with U-tube 3 Insert aerial, until at the bottom of hole.The length of U-tube 3 should be more slightly longer than hole depth, allows it to the 500mm that bassets, in order to follow-up executes Work.During down tube, it is full of water in U-tube, and sets pipe clamp every 2-4m, by 3 liang of arms of U-tube separately, it is to avoid between each arm Heat disturbance, after U-tube 3 installs, immediately grouting backfill sealing of hole, isolate water-bearing layer.After putting in place under heat exchange pipeline, should carry Play down tube drilling rod.Should prevent U-tube 3 from floating during promotion, make it fix as found that floating takes immediate steps, it is ensured that down tube Put in place.After vertical ground heat exchanger U-tube 3 installs, in time pipeline should be carried out pressure testing examination, qualified after be in the milk immediately Backfill sealing of hole.As find during pressure testing can not voltage stabilizing, it is necessary in time by the pipeline pull-out pipeline that embedment pressure testing is qualified again, And analyze the reason of accident, rectification and reform is proposed.Can sealing of hole after confirming U-tube 3 ne-leakage.
Vertical ground heat exchanger grouting backfill material 5 preferably uses the mixing slurry of bentonite and fine sand (or cement) or special filling Pulp material.When ground heat exchanger is located in closely knit or hard Rock And Soil, preferably use the grouting backfill of cement base material.Work as boring Time get out cement mortar solidification after-contraction little, can be as backfilling material.Flatly buried tube heat exchanger backfill material 5 should tiny, Loose, uniform, and should not contain stone and soil block.During the grouting of utility model vertical shaft, backfill material 5 and proportioning should meet design requirement.
After completing 1 pore-forming, when carrying out next hole drilling, allow circulating mud through the pore-forming of a upper down tube In, the precipitate in mud circulation can be deposited in a pore-forming, and top layer can not be filled up part and use backfill material 5 to tamp.Return Combining operation of pouring water when filling out, backfill closely knit several times, this kind of back-filling way is the most conventional.
Grouting construction requires and step: underground condition and the characteristic of grouting material and underground pipe are depended in the selection to grouting The expection running temperature of heat exchanger.Perfusion suitably grouting can strengthen the thermo-contact between soil and heat exchanger, prevents from polluting Thing faces down from ground seepage, prevents the movement between each water layer in underground.After vertical ground heat exchanger U-tube 3 installs, should The sealing of hole of grouting backfill immediately.Backfilling material selects the mixing slurry of bentonite and fine sand or cement, bentonite: fine sand: cement=1: 5:4, calculates the mixing slurry amount that each well needs, and must ensure that once grouting is complete before grouting.Should be according to grouting pump during grouting Speed grout pipe 7 is gradually extracted out, grout pipe 7 is identical with water pipe material, the whole middle non junction of grout pipe 7, make grouting from Lower and upper perfusion sealing of hole, it is ensured that well cementing is closely knit, without cavity.During backfill material 5 grouting, it is desirable to high pressure backfill guarantees without backfill sky Gap, should have the good capacity of heat transmission after backfill material 5 solidification.Pressurize must be carried out at grouting backfill pipeline, once find that pressure goes out Now abnormal, stop immediately, backfill after ascertaining the reason and processing, can be continued.PE pipe in pore should wait 3-after having buried 4h, backfills with coarse sand after mud sediment in well, it is necessary to tamped in the space between pipe and pore, it is ensured that heat transfer effect.First Secondary complete after should repeatedly check.Time after the cement mortar solidification taken out during boring as shunk the least, it is possible to as grouting material.If After boring region is the most closely knit under frozen soil layer when hard soil or rock, cement base material should be used to be in the milk.Work as pipe laying depth During more than 40m, grouting backfill is carried out after should closing on the equal Drilling of boring around.The pipeline pipe on ground is will be left in after having backfilled Mouth carries out closure protection, prevents subsequent construction from causing damage.The inspection of backfilling process must be same with the installation of ground heat exchanger Step is carried out.
Certainly, foregoing is only preferred embodiment of the present utility model, it is impossible to be considered new for limiting this practicality The scope of embodiments of type.This utility model is also not limited to the example above, and those skilled in the art are in this reality With the impartial change made in novel essential scope and improvement etc., patent covering scope of the present utility model all should be belonged to In.

Claims (5)

1. the grouting backfill system of vertical shaft in a vertical heat exchanger, it is characterised in that: include Vertical pendulum tiltmeters, grout pipe (7) Together with being tightly secured in by fixed support card (4) with fixed support card (4), Vertical pendulum tiltmeters and grout pipe (7), the most buried Pipe includes water inlet pipe (1), outlet pipe (2) and U-tube (3), and the bottom of water inlet pipe (1) and outlet pipe (2) connects U-tube (3), It is provided with water in the cavity of Vertical pendulum tiltmeters and Vertical pendulum tiltmeters port (6) seals and arranges.
The grouting backfill system of vertical shaft in vertical heat exchanger the most according to claim 1, it is characterised in that: fixed support card (4) being uniformly arranged on Vertical pendulum tiltmeters and grout pipe (7), fixed support card (4) is at least provided with two.
The grouting backfill system of vertical shaft in vertical heat exchanger the most according to claim 1, it is characterised in that: fixed support card (4) 2-4m is provided with one.
4. according to the grouting backfill system of vertical shaft in the vertical heat exchanger described in Claims 2 or 3, it is characterised in that: fixing The pretightning force of frame card (4) ensure that Vertical pendulum tiltmeters is indeformable and in grout pipe (7) filling process easily.
The grouting backfill system of vertical shaft in vertical heat exchanger the most according to claim 1, it is characterised in that: grout pipe (7) Being positioned between the water inlet pipe (1) of Vertical pendulum tiltmeters and outlet pipe (2), the lower end of grout pipe (7) is positioned at U-tube (3) top.
CN201620587902.4U 2016-06-15 2016-06-15 Grout system of backfilling of shaft in vertical heat exchanger Expired - Fee Related CN205876388U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620587902.4U CN205876388U (en) 2016-06-15 2016-06-15 Grout system of backfilling of shaft in vertical heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620587902.4U CN205876388U (en) 2016-06-15 2016-06-15 Grout system of backfilling of shaft in vertical heat exchanger

Publications (1)

Publication Number Publication Date
CN205876388U true CN205876388U (en) 2017-01-11

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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107388631A (en) * 2017-07-07 2017-11-24 江苏亚特尔地源科技股份有限公司 A kind of ground buried pipe of ground source heat pump pipeline construction method
CN109256726A (en) * 2018-11-22 2019-01-22 陕西陕煤铜川矿业有限公司 A kind of cable laying method of vertical laying pipeline

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107388631A (en) * 2017-07-07 2017-11-24 江苏亚特尔地源科技股份有限公司 A kind of ground buried pipe of ground source heat pump pipeline construction method
CN109256726A (en) * 2018-11-22 2019-01-22 陕西陕煤铜川矿业有限公司 A kind of cable laying method of vertical laying pipeline

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170111

Termination date: 20170615

CF01 Termination of patent right due to non-payment of annual fee