CN208886252U - Hose interts buried pipeline anti-corrosion reinforcing device - Google Patents
Hose interts buried pipeline anti-corrosion reinforcing device Download PDFInfo
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- CN208886252U CN208886252U CN201821528883.3U CN201821528883U CN208886252U CN 208886252 U CN208886252 U CN 208886252U CN 201821528883 U CN201821528883 U CN 201821528883U CN 208886252 U CN208886252 U CN 208886252U
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Abstract
The utility model relates to buried pipeline anti-corrosion reinforcing device technical fields, are a kind of interspersed buried pipeline anti-corrosion reinforcing devices of hose comprising guide wheel, enhancing hose, protective pad, drawing head and dragger；The guide wheel of at least one is linearly arranged, the enhancing hose that can be walked along guide wheel is equipped on the guide wheel linearly arranged, the arc-shaped protective pad in the section tilted down is provided in front of guide wheel.The utility model reasonable and compact in structure, it is easy to use, enhancing hose is punctured into buried pipeline by it, form tube-in-tube structure, Buried Pipeline drilling point can not only be repaired, the pipeline compressive resistance of the buried pipeline after repairing can also be enhanced simultaneously, corrosive medium is isolated, play a dual role of anti-corrosion reinforcement, and excavation workload can be effectively reduced, reduces the destruction to environment, pigging operation requires low simultaneously, interspersed speed is fast, greatly shortens the construction operation period, reduces engineering and production cost.
Description
Technical field
The utility model relates to buried pipeline anti-corrosion reinforcing device technical fields, are a kind of interspersed buried pipeline anti-corrosions of hose
Reinforcing device.
Background technique
Oil gas field buried pipeline carries oilfield produced fluid -- the conveying task of oil gas water, with the extension of active time,
Oilfield exploitation enters the middle and later periods, and production fluid water content constantly rises, and Buried Pipeline aggravation, corrosion failure occurs again and again, makes
At environmental pollution, there are security risks；Buried pipeline inner wall is thinned simultaneously, and stress levels reduce, and is not able to satisfy operating pressure and wants
It asks.Solve Buried Pipeline governing problem become the task of top priority, currently used method have wind send squeezing and coating inner coating technology,
HDPE plastic pipe interts technology, CIPP hose turnover technology etc., and first two technology cannot carry out reinforcement to pipeline, need to be to being corroded through
Hole point can construct after being repaired；Although latter technique can carry out reinforcement to buried pipeline, one-off construction is long
Shorter only 300m-500m is spent, the pipeline for excavating operating pit inconvenience is not suitable for, and is not able to satisfy long range non-excavating construction and wants
It asks.
Summary of the invention
The utility model provides a kind of hose and interts buried pipeline anti-corrosion reinforcing device, overcome the above-mentioned prior art it
Deficiency, can effectively solve it is current administer Buried Pipeline method cannot reinforcement simultaneously or can reinforcement but construction length it is shorter
Not the problem of not being able to satisfy long range non-excavating construction requirement.
The technical solution of the utility model is realized by following measures: a kind of interspersed buried pipeline anti-corrosion benefit of hose
Intensity device, including guide wheel, enhancing hose, protective pad, drawing head, traction rope and dragger；The linear cloth of the guide wheel of at least one
It sets, the enhancing hose that can be walked along guide wheel is equipped on the guide wheel linearly arranged, is provided with and dips down in front of guide wheel
The arc-shaped protective pad in oblique section, the enhancing hose in front of guide wheel are placed on protective pad, in the fixed peace in the front end of enhancing hose
Equipped with drawing head, the front end of drawing head and one end of traction rope are fixedly installed togather, the front setting of drawing head horizontal direction
There is fixed pulley, enhance and be provided with dragger above hose, the other end of traction rope is wound into turning for dragger around fixed pulley
On disk.
Here is the further optimization and/or improvements to above-mentioned utility model technical solution:
Above-mentioned enhancing hose is that three-decker is compound, and the internal layer for enhancing hose is anti-corrosion impervious layer, the material of anti-corrosion impervious layer
Material is polyurethane, polyethylene, gathers inclined tetrafluoroethene or nylon66 fiber, and the middle layer for enhancing hose is enhancement layer, and enhancement layer is fiber
Flexible hose, the material of enhancement layer are glass fibre, carbon fiber, aramid fiber or vinylon fibre, and it is resistance to for enhancing the outer layer of hose
Layer is ground, the material of wearing layer is ultra-high molecular weight polyethylene.
The front end of above-mentioned protective pad is fixedly installed with the arc-shaped bend pipe in section, in the arc groove and bend pipe in protective pad
Arc groove rounding off, the enhancing hose in front of guide wheel are placed on protective pad and bend pipe.
It is above-mentioned that the U-shaped form-pressing machine that enhancing hose can be pressed into U-shaped is provided in the corresponding enhancing hose in protective pad rear.
It further includes fixed anchor and chest expander that above-mentioned hose, which interts buried pipeline anti-corrosion reinforcing device, drawing head horizontal direction
Front is provided with fixed anchor, and one end of chest expander is fixedly connected with fixed pulley, and the other end of chest expander is fixed on fixed anchor.
It is above-mentioned that governor is provided on dragger.
The above-mentioned front end in drawing head is equipped with the anti-twist device with rotating mechanism, and the one of the front end of anti-twist device and traction rope
End is fixedly installed togather.
The utility model reasonable and compact in structure, it is easy to use, enhancing hose is punctured into buried pipeline, pipe is formed
Middle pipe structure, hookah bodies pressure resistance 2.5 MPa to 4.0MPa are structural repair materials, can carry out reinforcing repairing to pipeline
It is multiple, restore buried pipeline line pressure grade, and its corrosive nature is excellent, anti-permeability performance is good, can play good isolation effect
Fruit prevents corrosion of the corrosive medium to steel pipe, therefore enhancing hose can not only repair Buried Pipeline drilling point,
The pipeline compressive resistance of the buried pipeline after repairing can also be enhanced simultaneously, corrosive medium is isolated, plays the dual work of anti-corrosion reinforcement
With, and one-off construction length is long, can achieve 3000m, can effectively reduce number of fragments when pipeline construction operation, subtract
Workload is excavated less, reduces the destruction to environment, while pigging operation requirement is low, and interspersed speed is fast, greatly shortens construction operation
Period reduces engineering and production cost.
Detailed description of the invention
Attached drawing 1 is the process structure schematic diagram of the best embodiment of the utility model.
Attached drawing 2 is the U-shaped tube-shape figure for enhancing hose after U-shaped form-pressing machine is pressed into U-shaped hose.
Attached drawing 3 is to enhance hose to be punctured into the structure chart for forming tube-in-tube in buried pipeline.
Coding in attached drawing is respectively as follows: 1 for guide wheel, and 2 be enhancing hose, and 3 be protective pad, and 4 be drawing head, and 5 be dragger,
6 be traction rope, and 7 be anti-corrosion impervious layer, and 8 be enhancement layer, and 9 be wearing layer, and 10 be bend pipe, and 11 be U-shaped form-pressing machine, and 12 be fixation
Anchor, 13 be chest expander, and 14 be fixed pulley, and 15 be governor, and 16 be anti-twist device, and 17 be corrosion failure point, and 18 need to repair
Buried pipeline, 19 is import variable diameter mouth, and 20 be export variable diameter mouth, and 21 be operating pit, and 22 be slope ratio.
Specific embodiment
The utility model is not limited by following embodiments, can technical solution according to the present utility model and actual conditions
Determine specific embodiment.
In the present invention, for ease of description, the description of the relative positional relationship of each component is according to specification
The Butut mode of attached drawing 1 is described, such as: the positional relationship of upper and lower, left and right is the Butut according to Figure of description
Direction determines, wherein in following description, determines forward and backward direction, the advance of direction of travel as standard using direction of travel
Fang Weiqian, the retrogressing Fang Weihou of direction of travel.
The utility model is further described below with reference to examples and drawings:
As shown in attached drawing 1,3, it includes guide wheel 1, enhancing hose 2, protection which, which interts buried pipeline anti-corrosion reinforcing device,
Pad 3, drawing head 4, dragger 5 and traction rope 6；The guide wheel 1 of at least one is linearly arranged, on the guide wheel 1 linearly arranged
It is equipped with the enhancing hose 2 that can be walked along guide wheel 1, the arc-shaped protection in the section tilted down is provided in front of guide wheel 1
The enhancing hose 2 of pad 3,1 front of guide wheel is placed on protective pad 3, is fixedly installed with drawing head 4 in the front end of enhancing hose 2, is drawn
First 4 front end and one end of traction rope 6 are fixedly installed togather, and fixed pulley 14 is provided in front of 4 horizontal direction of drawing head, increase
The top of strong hose 2 is provided with dragger 5, and the other end of traction rope 6 is wound on the turntable of dragger 5 around fixed pulley 14.
Enhancing hose 2 is punctured into buried pipeline, is formed tube-in-tube structure and is seen Fig. 3, enhancing hose 2 not only can be to Buried Pipeline
Drilling point 17 is repaired, while can also enhance the pipeline compressive resistance of the buried pipeline after repairing, and corrosive medium is isolated, and is risen
To anti-corrosion reinforcement double action.In addition 2 ontology compressive resistance of enhancing hose is high, and reinforcement can be played to corrosion thinning pipeline and is repaired
Effect improves pipeline stress levels.It is 2mm smaller than buried pipeline internal diameter to 5mm to enhance 2 outer diameter of hose.Guide wheel 1, is led drawing head 4
Messenger 6, dragger 5 and fixed pulley 14 are existing well-known technique.
Can the interspersed buried pipeline anti-corrosion reinforcing device of above-mentioned hose be advanced optimized or/and be changed according to actual needs
Into:
As shown in attached drawing 1,3, enhancing hose 2 is that three-decker is compound, and the internal layer of enhancing hose 2 is anti-corrosion impervious layer 7, is prevented
The material of rotten impervious layer 7 is polyurethane, polyethylene, gathers inclined tetrafluoroethene or nylon66 fiber, and the middle layer of enhancing hose 2 is enhancement layer
8, enhancement layer 8 is fibrage hose, and the material of enhancement layer 8 is glass fibre, carbon fiber, aramid fiber or vinylon fibre, is increased
The outer layer of strong hose 2 is wearing layer 9, and the material of wearing layer 9 is ultra-high molecular weight polyethylene.Enhancing hose 2 general thickness be
3mm to 6mm, diameter are 50mm to 500mm, and the length for enhancing hose 2 can be for 20m extremely according to buried pipeline length requirement
3000m。
As shown in Fig. 1, the front end of protective pad 3 is fixedly installed with the arc-shaped bend pipe 10 in section, the arc in protective pad 3
The enhancing hose 2 of arc groove rounding off in slot and bend pipe 10,1 front of guide wheel is placed on protective pad 3 and bend pipe 10.Bend pipe 10
For 1/4 circular arc, circular arc is tangent with the buried pipeline of protective pad 3 and importing 19 position of variable diameter mouth respectively, suitable convenient for enhancing hose 2
Benefit enters inside buried pipeline.
As shown in Fig. 2, at 3 rear of protective pad, corresponding enhancing hose 2 is provided with the U that enhancing hose 2 can be pressed into U-shaped
Shape form-pressing machine 11.U-shaped form-pressing machine 11 is existing well-known technique, and enhancing hose 2 is pressed into behind U-shaped hose by U-shaped form-pressing machine 11
Product reduction 30-40%, can guarantee to enhance inside the buried pipeline 18 that hose 2 is smoothly easily repaired into needs, U-shaped hose
Shape is shown in Fig. 2.
As shown in Fig. 1, it further includes fixed anchor 12 and chest expander 13, traction that hose, which interts buried pipeline anti-corrosion reinforcing device,
Fixed anchor 12 is provided in front of first 4 horizontal direction, one end of chest expander 13 is fixedly connected with fixed pulley 14, chest expander 13 it is another
One end is fixed on fixed anchor 12.Fixed anchor 12 and chest expander 13 are existing well-known technique, 13 one end of chest expander and fixed pulley
14 are connected, and the other end is fixed on fixed anchor 12, and for the tractive force of real-time monitoring dragger 5, maximum drawbar pull control is increasing
The 80% of the stretch breaking strength of strong hose 2 is hereinafter, hose stretch breaking strength=hose yield strength * hose cross-section area, 13 amount of chest expander
Journey is 1.25 times of stretch breaking strength.
As shown in Fig. 1, governor 15 is provided on dragger 5.Governor is existing well-known technique, is led for adjusting
Draw speed, hauling speed control is in 10m/min between 20m/min.
As shown in Fig. 1, the anti-twist device 16 with rotating mechanism is installed in the front end of drawing head 4, before anti-twist device 16
It holds and is fixedly installed togather with one end of traction rope 6.Anti-twist device is that the wirerope anti-twist device or cable in existing well-known technique are prevented
Turn round device or the anti-twist device device with same function.Anti-twist device 16 can release the torque that distraction procedure generates by anti-twist device 16
It puts, anti-twist device 16 is the component with rotating mechanism, will draw the rotation torque that traction rope 6 generates in inserting process and discharges
Fall.
Using hose intert buried pipeline anti-corrosion reinforcing device to the buried pipeline of corrosion repaired by the following method into
Row:
The first step determines the position for needing the buried pipeline 18 repaired, and the buried pipeline 18 repaired to needs is segmented,
Its section length is 20m to 3000m according to buried pipeline and field condition, is excavated at 18 sections of both ends of the buried pipeline for needing to repair
Operating pit 21,21 depth of operating pit are 7 bottom of buried pipeline or less 0.5m to 1.0m, and width is buried pipeline upright projection width
To both sides extension 0.5m, excavation slope ratio 22 is 1.5:1 to 1:1；
Second step be segmented breaking and be cut, then to needs to 18 sections of buried pipeline that needs are repaired with whole buried pipeline
The buried pipeline 18 of reparation carries out pigging operation, removes dirt in pipe, then distinguishes at 18 both ends of buried pipeline for needing to repair
Weld tubaeform importing variable diameter mouth 19 and export variable diameter mouth 20；
Dragger 5 is mounted in the earthwork for 18 top of buried pipeline for needing to repair, fixed pulley 14 is arranged by third step
In the operating pit 21 in 18 front of buried pipeline for needing to repair, the front end water of fixed pulley 14 and the buried pipeline 18 for needing to repair
Square to concordant, it is placed in protective pad 3 is skewed in the operating pit 21 for needing 18 rear of buried pipeline repaired, guide wheel 1 is set
In in the earthwork at 21 rear of operating pit at the rear of buried pipeline 18 for needing to repair, what the front end of protective pad 3 and needs were repaired
The rear end of buried pipeline 18 is corresponding, and the rear end of protective pad 3 corresponds to the horizontal direction of guide wheel 1, and enhancing hose 2 is along guide wheel 1, anti-
Protection pad 3 and bend pipe 10 enter in buried pipeline, are fixedly installed with drawing head 4, the front end of drawing head 4 in the front end of enhancing hose 2
It is fixedly installed togather with one end of traction rope 6, the other end of traction rope 6 is wound into the turntable of dragger 5 around fixed pulley 14
On；
4th step, start dragger 5, be arranged governor 15, control dragger 5 hauling speed be 10 m/min extremely
20m/min adjusts the pinch roller on U-shaped form-pressing machine 11, and enhancing hose 2 is pressed into U-shaped, pulls enhancing hose 2 sliding by drawing head 4
It is inserted into the buried pipeline 18 for needing to repair after crossing protective pad 3 and bend pipe 10 by importing variable diameter mouth 19, real-time monitoring pulling force
Device 13 observes the tractive force of dragger 5, guarantees that maximum drawbar pull is less than the 80% of enhancing 2 stretch breaking strength of hose, enhances hose 2
2 yield strength * of stretch breaking strength=enhancing hose enhances 2 cross-sectional area of hose；
5th step, when drawing head 4, which reaches export variable diameter mouth 20, to be exported, 18 rear of buried pipeline that cutting needs to repair is more
Remaining enhancing hose 2, be punctured into 2 both ends of enhancing hose in buried pipeline respectively with import variable diameter mouth 19 and export variable diameter mouth 20
It fixes and seals, the enhancing hose 2 in buried pipeline is suppressed with air compressor machine, U-tube is resiled, restoring pressure is
0.5 MPa to 1.0MPa, making, which enhances hose 2, clings to buried pipeline inner wall, forms tube-in-tube structure.
The utility model is punctured into hose 2 is enhanced in buried pipeline, and forms tube-in-tube structure, and enhancing 2 ontology of hose is resistance to
2.5 MPa to 4.0MPa are pressed, is structural repair materials, reinforcement reparation can be carried out to pipeline, restore buried pipeline line pressure
Grade, and its corrosive nature is excellent, and anti-permeability performance is good, can play good isolation effect, prevents corrosive medium to steel pipe
Corrosion, therefore enhance hose 2 and Buried Pipeline drilling point 17 can not only be repaired, while reparation can also be enhanced
The pipeline compressive resistance of buried pipeline afterwards is isolated corrosive medium, plays a dual role of anti-corrosion reinforcement, and one-off construction is long
Degree length, can achieve 3000m, can effectively reduce number of fragments when pipeline construction operation, reduces and excavates workload, reduction pair
The destruction of environment, while pigging operation requirement is low, interspersed speed is fast, greatly shortens the construction operation period, reduces engineering and production
Cost.
The above technical characteristic constitutes the most preferred embodiment of the utility model, with stronger adaptability and best implementation
Effect can increase and decrease non-essential technical characteristic, according to actual needs to meet the needs of different situations.
Claims (17)
1. a kind of hose interts buried pipeline anti-corrosion reinforcing device, it is characterised in that including guide wheel, enhancing hose, protective pad, lead
Leader, traction rope and dragger；The guide wheel of at least one linearly arranges, being equipped on the guide wheel linearly arranged can be along
The enhancing hose of guide wheel walking, is provided with the arc-shaped protective pad in the section tilted down, the increasing in front of guide wheel in front of guide wheel
Strong hose is placed on protective pad, is fixedly installed with drawing head in the front end of enhancing hose, and the one of the front end of drawing head and traction rope
End is fixedly installed togather, and is provided with fixed pulley in front of drawing head horizontal direction, enhances and be provided with dragger above hose,
The other end of traction rope is wound on the turntable of dragger around fixed pulley.
2. hose according to claim 1 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that enhancing hose is three
Layer structure composite, the internal layer for enhancing hose is anti-corrosion impervious layer, and the material of anti-corrosion impervious layer is polyurethane, polyethylene, gathers inclined four
Vinyl fluoride or nylon66 fiber, the middle layer for enhancing hose is enhancement layer, and enhancement layer is fibrage hose, and the material of enhancement layer is glass
Glass fiber, carbon fiber, aramid fiber or vinylon fibre, the outer layer for enhancing hose is wearing layer, and the material of wearing layer is superelevation point
Sub- weight northylen.
3. hose according to claim 1 or 2 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that before protective pad
End is fixedly installed with the arc-shaped bend pipe in section, the arc groove rounding off in arc groove and bend pipe in protective pad, before guide wheel
The enhancing hose of side is placed on protective pad and bend pipe.
4. hose according to claim 1 or 2 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that after protective pad
The corresponding enhancing hose in side is provided with the U-shaped form-pressing machine that enhancing hose can be pressed into U-shaped.
5. hose according to claim 3 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that at protective pad rear
Corresponding enhancing hose is provided with the U-shaped form-pressing machine that enhancing hose can be pressed into U-shaped.
6. hose according to claim 1 or 2 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that further include fixing
Anchor and chest expander are provided with fixed anchor in front of drawing head horizontal direction, and one end of chest expander is fixedly connected with fixed pulley, pulling force
The other end of device is fixed on fixed anchor.
7. hose according to claim 3 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that further include fixed anchor
And chest expander, fixed anchor is provided in front of drawing head horizontal direction, and one end of chest expander is fixedly connected with fixed pulley, chest expander
The other end be fixed on fixed anchor.
8. hose according to claim 4 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that further include fixed anchor
And chest expander, fixed anchor is provided in front of drawing head horizontal direction, and one end of chest expander is fixedly connected with fixed pulley, chest expander
The other end be fixed on fixed anchor.
9. hose according to claim 5 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that further include fixed anchor
And chest expander, fixed anchor is provided in front of drawing head horizontal direction, and one end of chest expander is fixedly connected with fixed pulley, chest expander
The other end be fixed on fixed anchor.
10. hose according to claim 1 or 2 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that in dragger
On be provided with governor；Or/and the anti-twist device with rotating mechanism is installed in the front end of drawing head, the front end of anti-twist device with
One end of traction rope is fixedly installed togather.
11. hose according to claim 3 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that set on dragger
It is equipped with governor；Or/and the anti-twist device with rotating mechanism, the front end of anti-twist device and traction are installed in the front end of drawing head
One end of rope is fixedly installed togather.
12. hose according to claim 4 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that set on dragger
It is equipped with governor；Or/and the anti-twist device with rotating mechanism, the front end of anti-twist device and traction are installed in the front end of drawing head
One end of rope is fixedly installed togather.
13. hose according to claim 5 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that set on dragger
It is equipped with governor；Or/and the anti-twist device with rotating mechanism, the front end of anti-twist device and traction are installed in the front end of drawing head
One end of rope is fixedly installed togather.
14. hose according to claim 6 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that set on dragger
It is equipped with governor；Or/and the anti-twist device with rotating mechanism, the front end of anti-twist device and traction are installed in the front end of drawing head
One end of rope is fixedly installed togather.
15. hose according to claim 7 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that set on dragger
It is equipped with governor；Or/and the anti-twist device with rotating mechanism, the front end of anti-twist device and traction are installed in the front end of drawing head
One end of rope is fixedly installed togather.
16. hose according to claim 8 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that set on dragger
It is equipped with governor；Or/and the anti-twist device with rotating mechanism, the front end of anti-twist device and traction are installed in the front end of drawing head
One end of rope is fixedly installed togather.
17. hose according to claim 9 interts buried pipeline anti-corrosion reinforcing device, it is characterised in that set on dragger
It is equipped with governor；Or/and the anti-twist device with rotating mechanism, the front end of anti-twist device and traction are installed in the front end of drawing head
One end of rope is fixedly installed togather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821528883.3U CN208886252U (en) | 2018-09-19 | 2018-09-19 | Hose interts buried pipeline anti-corrosion reinforcing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821528883.3U CN208886252U (en) | 2018-09-19 | 2018-09-19 | Hose interts buried pipeline anti-corrosion reinforcing device |
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| Publication Number | Publication Date |
|---|---|
| CN208886252U true CN208886252U (en) | 2019-05-21 |
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ID=66512930
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| CN201821528883.3U Active CN208886252U (en) | 2018-09-19 | 2018-09-19 | Hose interts buried pipeline anti-corrosion reinforcing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916534A (en) * | 2018-09-19 | 2018-11-30 | 扬州苏油三圆技术有限公司 | Hose interts buried pipeline anti-corrosion reinforcing device and buried pipeline restorative procedure |
| CN110894901A (en) * | 2019-11-27 | 2020-03-20 | 成都龙之泉科技股份有限公司 | Anticorrosive type pipeline repair hose |
| CN110953410A (en) * | 2019-11-27 | 2020-04-03 | 成都龙之泉科技股份有限公司 | Non-excavation repair hose with rubber protective layer |
-
2018
- 2018-09-19 CN CN201821528883.3U patent/CN208886252U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916534A (en) * | 2018-09-19 | 2018-11-30 | 扬州苏油三圆技术有限公司 | Hose interts buried pipeline anti-corrosion reinforcing device and buried pipeline restorative procedure |
| CN110894901A (en) * | 2019-11-27 | 2020-03-20 | 成都龙之泉科技股份有限公司 | Anticorrosive type pipeline repair hose |
| CN110953410A (en) * | 2019-11-27 | 2020-04-03 | 成都龙之泉科技股份有限公司 | Non-excavation repair hose with rubber protective layer |
| CN110894901B (en) * | 2019-11-27 | 2021-10-22 | 成都龙之泉科技股份有限公司 | Anticorrosive type pipeline repair hose |
| CN110953410B (en) * | 2019-11-27 | 2022-03-29 | 成都龙之泉科技股份有限公司 | Non-excavation repair hose with rubber protective layer |
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