CN110005905A - A method of utilizing steel epoxy sleeve pipe-repairing - Google Patents
A method of utilizing steel epoxy sleeve pipe-repairing Download PDFInfo
- Publication number
- CN110005905A CN110005905A CN201910315110.XA CN201910315110A CN110005905A CN 110005905 A CN110005905 A CN 110005905A CN 201910315110 A CN201910315110 A CN 201910315110A CN 110005905 A CN110005905 A CN 110005905A
- Authority
- CN
- China
- Prior art keywords
- steel
- sleeve
- epoxy resin
- epoxy
- repairing
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 115
- 239000010959 steel Substances 0.000 title claims abstract description 114
- 239000004593 Epoxy Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000003822 epoxy resin Substances 0.000 claims abstract description 52
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 52
- 238000001802 infusion Methods 0.000 claims abstract description 8
- 239000003566 sealing material Substances 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims 1
- 230000010412 perfusion Effects 0.000 abstract description 10
- 238000005452 bending Methods 0.000 abstract description 7
- 238000005406 washing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 16
- 230000007547 defect Effects 0.000 description 6
- 230000008439 repair process Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
Abstract
The invention discloses a kind of methods using steel epoxy sleeve pipe-repairing, the following steps are included: steel sleeve to be sleeved on to the fault location to be repaired of tube body, the steel wire of rectangle is put into toroidal cavity, steel wire is rolled into cylindrical shape, the both ends of toroidal cavity are sealed by sealing material, vacuumize process is carried out to toroidal cavity with vacuum pump, then infusion epoxy resin, open the valve port of steel sleeve bottom, flow out epoxy resin, the process of epoxy resin outflow washes away the inner wall of steel sleeve and the outer wall of tube body, after washing away for several times repeatedly, form.The invention has the beneficial effects that: (1) interface for repeatedly washing away the interface for ensuring epoxy resin and steel sleeve and epoxy resin and tube body does not have bubble, so the bearing capacity of steel epoxy sleeve entirety is promoted after perfusion forming；(2) steel wire is combined together with epoxy resin layer, so the anti-bending strength of steel epoxy sleeve gets a promotion after perfusion forming.
Description
Technical field
The present invention relates to a kind of methods of pipe-repairing, and in particular to a kind of side using steel epoxy sleeve pipe-repairing
Method belongs to pipe rehabilitation technology field.
Background technique
The conveyance conduit of existing Hi-grade steel Large Diameter Pipeline to the reparation of defect requires that the trend being continuously improved is presented, and traditional
The shortcoming of defect of pipeline recovery technique become clear day by day.
Tube body defect mainly has four major class: metal loss, crackle, deformation, weld defect.
Currently, domestic common defect-restoration method therefor has: plate, the reparation of A jacket cylinder, the reparation of Type B sleeve, steel are mended in repair welding
The reparation of epoxy sleeve, composite repair add mechanical clamp, add liner, change pipe etc..
For more serious tube body or weld defect, be using most restorative procedures: the reparation of A jacket cylinder, Type B sleeve are repaired
Multiple, composite repair, steel epoxy sleeve reparation.However, these restorative procedures have its respective limitation again, it is specific:
(1) axial pressure-bearing and hair cannot A jacket cylinder reparation: be repaired into the defect of corrosion leakage；
(2) Type B sleeve reparation: can bear axial and circumferential pressure, but need to carry out the welding with tube body, welding
Operation requires harshness to oil-gas pipeline, and sweating heat will have a direct impact on the safety of construction, easily generation explosion accident, and welds
Hydrogen embrittlement can occur for operation；
(3) composite repair: not needing to be subjected to, and repairing effect is also good, but needing to consider repairs material
The cost and safety of material；
(4) steel epoxy sleeve reparation: not needing to be subjected to, other operations are also all very safe, but be perfused at
Some performances (such as: anti-bending strength, whole bearing capacity) after shape are difficult to ensure.
Summary of the invention
To solve the deficiencies in the prior art, steel epoxy sleeve pipe-repairing is utilized the purpose of the present invention is to provide a kind of
Method, this method can guarantee perfusion forming after steel epoxy sleeve anti-bending strength and entirety bearing capacity all mentioned
It rises.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A method of utilizing steel epoxy sleeve pipe-repairing, which comprises the following steps:
Steel sleeve: being sleeved on the fault location to be repaired of tube body by Step1, and it is empty that annular is formed between steel sleeve and tube body
Chamber；
Step2: the steel wire of rectangle is put into toroidal cavity, and steel wire is rolled into cylindrical shape, then by steel wire
Butt joint edge is fixed together；
Step3: the both ends of toroidal cavity are sealed by sealing material；
Step4: vacuumizing toroidal cavity, then from top into toroidal cavity infusion epoxy resin, work as steel sleeve
All gas vents when having epoxy resin spilling, close inlet valve；
Step5: opening the valve port of steel sleeve bottom, flows out the epoxy resin in steel sleeve from valve port, to
When epoxy resin cannot flow continually out, valve port is closed；
Step6: repeating Step4 and Step5 more times, with epoxy resin to the outer wall of the inner wall of steel sleeve and tube body into
Row washes away repeatedly；
Step7: the infusion epoxy resin into toroidal cavity, when whole gas vents of steel sleeve have epoxy resin spilling
When, inlet valve is closed, finally standing makes molding for epoxy resin.
Method above-mentioned using steel epoxy sleeve pipe-repairing, which is characterized in that in Step1, steel set used
There are three perfusing hole, two gas vents and a valve ports for cylinder tool, and three perfusing holes and two gas vents are all disposed within steel set
The top of cylinder, wherein there are two perfusing holes respectively close to the left and right ends of steel sleeve, another perfusing hole is located at steel set
The centre of cylinder, two gas vents are located at the centre of two neighboring perfusing hole；The bottom of steel sleeve is arranged in valve port, and
And it is located at the centre of steel sleeve.
Method above-mentioned using steel epoxy sleeve pipe-repairing, which is characterized in that in Step2, steel wire is rolled up
After cylindrical shape, diameter is greater than the outer diameter 4-8mm of tube body.
Method above-mentioned using steel epoxy sleeve pipe-repairing, which is characterized in that in Step3, toroidal cavity
After the sealing of both ends, stand for 24 hours.
Method above-mentioned using steel epoxy sleeve pipe-repairing, which is characterized in that in Step4, to toroidal cavity
It is evacuated to -0.8MPa.
Method above-mentioned using steel epoxy sleeve pipe-repairing, which is characterized in that in Step6, repeat Step4 and
The number of Step5 is 3-5 times.
Method above-mentioned using steel epoxy sleeve pipe-repairing, which is characterized in that in Step7, time of repose is
24h。
Method above-mentioned using steel epoxy sleeve pipe-repairing, which is characterized in that operating environment temperature is room temperature, ring
The temperature of oxygen resin is 30-35 DEG C.
The invention has the beneficial effects that:
(1) by washing away the inner wall of steel sleeve and the outer wall of tube body repeatedly with epoxy resin, it is ensured that epoxy resin
There is no bubble with the interface at the interface of steel sleeve and epoxy resin and tube body, enable perfusion shape after epoxy resin with
Steel sleeve is closely linked, so the bearing capacity of steel epoxy sleeve entirety is promoted after perfusion forming；
(2) by placing steel wire in toroidal cavity, so that the anti-bending strength of the epoxy resin layer after perfusion forming obtains
To promotion, so the anti-bending strength of steel epoxy sleeve also gets a promotion after perfusion forming；
(3) operating procedure requires operator lower；
(4) site operation simple and flexible, it is at low cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of the method proposed by the present invention using steel epoxy sleeve pipe-repairing；
Fig. 2 is the sectional view of steel epoxy sleeve after perfusion forming.
The meaning of appended drawing reference in figure:
1- tube body, 2- steel sleeve, 3- epoxy resin layer, 4- steel wire；
21- perfusing hole, 22- gas vent, 23- perfusing hole, 24- gas vent, 25- perfusing hole, 26- fastening bolt, the bottom 27-
Valve port, 28- positioning bolt.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
One, steel sleeve
Referring to Fig.1, steel sleeve 2 used in the present invention includes
(1) three perfusing hole: perfusing hole 21, perfusing hole 23, perfusing hole 25, wherein perfusing hole 21 and perfusing hole 25 are distinguished
Close to the left and right ends of steel sleeve 2, perfusing hole 23 is located at the centre of steel sleeve 2, and three perfusing holes are all disposed within steel set
The top of cylinder 2；
(2) two gas vents: gas vent 22, gas vent 24, two gas vents are also all disposed within the top of steel sleeve 2,
And it is located at the centre of two neighboring perfusing hole；
(3) valve ports: valve port 27, the bottom of steel sleeve 2 is arranged in valve port 27, and is located at steel sleeve
2 centre.
Two, it repairs
Operating environment temperature: room temperature.
The temperature of epoxy resin: 30-35 DEG C.
Referring to Fig.1, the method proposed by the present invention using steel epoxy sleeve pipe-repairing, specifically includes the following steps:
Step1: set steel sleeve
Steel sleeve 2 is sleeved on to the fault location to be repaired of tube body 1, it is empty to form annular between steel sleeve 2 and tube body 1
Chamber.
Step2: steel wire is set
The steel wire of rectangle is put into toroidal cavity, steel wire is rolled into cylindrical shape, then by the butt joint edge of steel wire
It is fixed together.
Steel wire is rolled into after cylindrical shape, and diameter is greater than the outer diameter 5mm optimum of tube body 1.
Step3: sealing
The both ends of toroidal cavity are sealed by sealing material, are then allowed to stand for 24 hours.
Step4: infusion epoxy resin
Vacuumize process is carried out to toroidal cavity with vacuum pump, is depressured to -0.8MPa, then by being located at steel sleeve 2
Perfusing hole 21, perfusing hole 23 and perfusing hole 25 infusion epoxy resin into toroidal cavity at top, when positioned at 2 top of steel sleeve
Gas vent 22 and gas vent 24 when having epoxy resin spilling, close inlet valve.
The bubble that is mingled in epoxy resin can only be discharged in this step, on the interface of epoxy resin and steel sleeve 2 and ring
Still some bubbles can be retained on the interface of oxygen resin and tube body 1, and the bubble for being deposited in interface influences whether perfusion forming
The binding performance of epoxy resin and steel sleeve 2 afterwards, to influence whether the bearing capacity of steel epoxy sleeve entirety.
Step5: tube wall and barrel are washed away
The valve port 27 for being located at 2 bottom of steel sleeve is opened, flows the epoxy resin in steel sleeve 2 from valve port 27
Out, when the epoxy resin in steel sleeve 2 cannot flow continually out, valve port 27 is closed.
For epoxy resin in steel sleeve 2 during flowing out from valve port 27, epoxy resin can be to steel sleeve 2
The outer wall of inner wall and tube body 1 forms certain souring, which can wash away epoxy resin and steel sleeve 2
Interface on bubble and epoxy resin and tube body 1 interface on bubble so that epoxy resin energy after perfusion forming
It is enough to be closely linked with steel sleeve 2, so that the bearing capacity of steel epoxy sleeve entirety is promoted.
Step6: it washes away repeatedly
Step4 and Step53-5 times are repeated, the inner wall of steel sleeve 2 and the outer wall of tube body 1 are carried out with epoxy resin
It washes away repeatedly, it is ensured that the interface and epoxy resin of epoxy resin and steel sleeve 2 and the interface of tube body 1 do not have bubble.
Step7: form
The infusion epoxy resin into toroidal cavity, when the gas vent 22 and gas vent 24 that are located at 2 top of steel sleeve have
When epoxy resin overflows, inlet valve is closed, finally stand makes molding for epoxy resin for 24 hours.
Referring to Fig. 2, after molding for epoxy resin, steel wire 4 has been fixed in epoxy resin layer 3, and and epoxy resin
Melt for one, the presence of steel wire 4 substantially increases the anti-bending strength of epoxy resin layer 3, and then improves entire steel rings
The anti-bending strength of oxygen sleeve.
It should be noted that the above embodiments do not limit the invention in any form, it is all to use equivalent replacement or equivalent change
The mode changed technical solution obtained, falls within the scope of protection of the present invention.
Claims (8)
1. a kind of method using steel epoxy sleeve pipe-repairing, which comprises the following steps:
Step1: steel sleeve is sleeved on to the fault location to be repaired of tube body, forms toroidal cavity between steel sleeve and tube body；
Step2: the steel wire of rectangle is put into toroidal cavity, and steel wire is rolled into cylindrical shape, then by the docking of steel wire
While being fixed together；
Step3: the both ends of toroidal cavity are sealed by sealing material；
Step4: vacuumizing toroidal cavity, then from top into toroidal cavity infusion epoxy resin, when the institute of steel sleeve
When thering is gas vent to have epoxy resin spilling, inlet valve is closed；
Step5: opening the valve port of steel sleeve bottom, flows out the epoxy resin in steel sleeve from valve port, to epoxy
When resin cannot flow continually out, valve port is closed；
Step6: it repeats Step4 and Step5 more times, the inner wall of steel sleeve and the outer wall of tube body is carried out instead with epoxy resin
It washes away again；
Step7: the infusion epoxy resin into toroidal cavity, when whole gas vents of steel sleeve have epoxy resin spilling,
Inlet valve is closed, finally standing makes molding for epoxy resin.
2. the method according to claim 1 using steel epoxy sleeve pipe-repairing, which is characterized in that in Step1,
There are three perfusing hole, two gas vents and a valve ports for steel sleeve tool used, and three perfusing holes and two gas vents are all set
It sets at the top of steel sleeve, wherein there are two left and right ends of the perfusing hole respectively close to steel sleeve, another perfusing holes
Positioned at the centre of steel sleeve, two gas vents are located at the centre of two neighboring perfusing hole；Valve port is arranged in steel set
The bottom of cylinder, and it is located at the centre of steel sleeve.
3. the method according to claim 1 using steel epoxy sleeve pipe-repairing, which is characterized in that in Step2,
Steel wire is rolled into after cylindrical shape, and diameter is greater than the outer diameter 4-8mm of tube body.
4. the method according to claim 1 using steel epoxy sleeve pipe-repairing, which is characterized in that in Step3,
After the both ends sealing of toroidal cavity, stand for 24 hours.
5. the method according to claim 1 using steel epoxy sleeve pipe-repairing, which is characterized in that in Step4,
- 0.8MPa is evacuated to toroidal cavity.
6. the method according to claim 1 using steel epoxy sleeve pipe-repairing, which is characterized in that in Step6,
The number for repeating Step4 and Step5 is 3-5 times.
7. the method according to claim 1 using steel epoxy sleeve pipe-repairing, which is characterized in that in Step7,
Time of repose is for 24 hours.
8. the method according to claim 1 using steel epoxy sleeve pipe-repairing, which is characterized in that operating environment temperature
Degree is room temperature, and the temperature of epoxy resin is 30-35 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315110.XA CN110005905B (en) | 2019-04-18 | 2019-04-18 | Method for repairing pipeline by using steel epoxy sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315110.XA CN110005905B (en) | 2019-04-18 | 2019-04-18 | Method for repairing pipeline by using steel epoxy sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110005905A true CN110005905A (en) | 2019-07-12 |
| CN110005905B CN110005905B (en) | 2020-08-18 |
Family
ID=67172893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910315110.XA Expired - Fee Related CN110005905B (en) | 2019-04-18 | 2019-04-18 | Method for repairing pipeline by using steel epoxy sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110005905B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672151A (en) * | 2019-09-23 | 2020-01-10 | 中国石油天然气集团有限公司 | Evaluation method for pipeline repairing effect by using epoxy steel sleeve |
| CN110701425A (en) * | 2019-09-12 | 2020-01-17 | 上海井园市政工程有限公司 | Non-excavation type pipeline repairing method |
| CN112178363A (en) * | 2020-09-18 | 2021-01-05 | 中国海洋石油集团有限公司 | Online repair device and repair method for cold insulation material of LNG pipeline |
| CN112976001A (en) * | 2021-02-25 | 2021-06-18 | 中国计量大学 | Piping lane inspection robot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561467A1 (en) * | 1992-03-18 | 1993-09-22 | SNAM S.p.A. | Method for repairing local damage to pipelines by applying cladding with an interposed protective sheath |
| WO2005114036A1 (en) * | 2004-04-29 | 2005-12-01 | Jorge Jose Schuhwerk | Assembly for repairing a subsea pipeline and method |
| US20060065320A1 (en) * | 2004-09-29 | 2006-03-30 | Borland Robin N | Pipeline repair system and method of installation |
| WO2006060209A1 (en) * | 2004-12-03 | 2006-06-08 | Illinois Tool Works Inc. | System and method for pipe repair |
| CN109000083A (en) * | 2017-06-07 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of method of epoxy sleeve pipe-repairing |
-
2019
- 2019-04-18 CN CN201910315110.XA patent/CN110005905B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561467A1 (en) * | 1992-03-18 | 1993-09-22 | SNAM S.p.A. | Method for repairing local damage to pipelines by applying cladding with an interposed protective sheath |
| WO2005114036A1 (en) * | 2004-04-29 | 2005-12-01 | Jorge Jose Schuhwerk | Assembly for repairing a subsea pipeline and method |
| US20060065320A1 (en) * | 2004-09-29 | 2006-03-30 | Borland Robin N | Pipeline repair system and method of installation |
| WO2006060209A1 (en) * | 2004-12-03 | 2006-06-08 | Illinois Tool Works Inc. | System and method for pipe repair |
| CN109000083A (en) * | 2017-06-07 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of method of epoxy sleeve pipe-repairing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701425A (en) * | 2019-09-12 | 2020-01-17 | 上海井园市政工程有限公司 | Non-excavation type pipeline repairing method |
| CN110701425B (en) * | 2019-09-12 | 2022-06-10 | 上海井园市政工程有限公司 | Non-excavation type pipeline repairing method |
| CN110672151A (en) * | 2019-09-23 | 2020-01-10 | 中国石油天然气集团有限公司 | Evaluation method for pipeline repairing effect by using epoxy steel sleeve |
| CN112178363A (en) * | 2020-09-18 | 2021-01-05 | 中国海洋石油集团有限公司 | Online repair device and repair method for cold insulation material of LNG pipeline |
| CN112976001A (en) * | 2021-02-25 | 2021-06-18 | 中国计量大学 | Piping lane inspection robot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110005905B (en) | 2020-08-18 |
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Granted publication date: 20200818 |