CN102620108B - Pouring repair method for leakage of underwater pipeline - Google Patents
Pouring repair method for leakage of underwater pipeline Download PDFInfo
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- CN102620108B CN102620108B CN2012101360912A CN201210136091A CN102620108B CN 102620108 B CN102620108 B CN 102620108B CN 2012101360912 A CN2012101360912 A CN 2012101360912A CN 201210136091 A CN201210136091 A CN 201210136091A CN 102620108 B CN102620108 B CN 102620108B
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Abstract
The invention discloses a pouring repair method for the leakage of an underwater pipeline and relates to the technical field of equipment repair. The pouring repair method comprises the following repair steps of: firstly, cleaning the leaking part and the periphery area; secondly, blocking the leaking part by using an underwater forming repair material; thirdly, reinforcing and fixing by using a ribbon or a strong magnet; fourthly, after the underwater forming repair material is completely dried, mounting a hoop of which the bottom and a seam crossing are sealed in advance; fifthly, starting a pouring machine and starting to pour an underwater polymer pouring material; and sixthly, finishing the underwater pouring process and stopping feeding. According to the pouring repair method disclosed by the invention, the problem of the leakage of the underwater pipeline can be solved under the condition that the pipeline is not detached and replaced; and in addition, the danger of cracking caused by thickness reduction of the pipeline due to corrosion can be overcome and the leakage of the underwater pipeline can be repaired quickly, conveniently and permanently.
Description
Technical field:
The present invention relates to equipment recovery technique field, be specifically related to a kind of submarine pipeline and leak the cast restorative procedure.
Background technique:
The leakage of underwater line not only can cause waste, and can cause environmental pollution.Take offshore oil platform caisson pipe as example, the caisson pipe can be subject to the corrosion of seawater and the leakage of boring a hole, thereby ocean environment is polluted.If the position of leaking is in waterborne, can adopt common repair materials to be repaired, but for locating underwater pipeline, also lack effective restorative procedure, generally only take interim method to process, use again clamp such as wrapping up in rubber peel, this way can only be slowed down leakage, can not thoroughly stop leakage problem.Because construction is dangerous, maintenance cost is high, is badly in need of wanting a kind of permanent recovery technique, solves the corrosion leakage problem of underwater line, and solves simultaneously the potential safety hazard that causes because of the tube wall attenuate.
Summary of the invention:
The purpose of this invention is to provide a kind of submarine pipeline and leak the cast restorative procedure, it can be in the situation that do not dismantle pipeline and change the problem that pipeline solution submarine pipeline leaks, and can solve pipeline because being subjected to corrosion thinning to cause the danger of fracture, can be fast, the leakage of convenient, permanent reparation underwater line.
In order to solve the existing problem of background technique, the present invention is by the following technical solutions: its reparation step is: 1, leak and outer peripheral areas are cleaned; 2, water compacted under repair materials is blocked leak; 3, strengthen fixing with band or strong magnet; 4, after the moulding repair materials is done solid work under water, install and done bottom and the pre-sealed anchor ear of seam crossing; 5, start pouring machine, start to pour into a mould Macromolecular pouring material under water; 6, complete the underwater pouring process, stop charging.
The operating method of described step 1 is: at first in the plan cast zone of pipeline, with high pressure water gun, carries out Integral cleaning, removes the foreign material on surface, such as: floating rust, oyster etc.; Then polish to the St2.0 level with pneumatic angle grinding machine around each leak; Finally on the surface of pipe to be repaired with several endless belt of pneumatic angle grinding machine polishing, more than requiring to reach the St2.0 level, with the raising combination force, the endless belt area is not less than 20% of zone to be cast, and all Leak hole upper and lowers all have endless belt.
The operating method of described step 2 is: 1, mix on the water base-material and the curing agent of moulding repair materials under water; 2, the above-mentioned material that mixes is spread upon on the tinplate of having polished uniformly; 3, with rope, the tinplate of smearing good material is passed to the diver; 4, the diver presses tinplate at the Leak hole place, and keeps certain pressure always, until step 3 is completed.
The model of the repair materials of moulding under water of selecting in described step 2 is for receiving plastic-steel NPS8110.
Band in described step 3 is the stainless steel band, is furnished with special-purpose tightening device, and this step is completed by another diver.
Anchor ear in described step 4 is low-carbon steel material, before construction, internal surface is through sand blast, the anchor ear internal diameter is greater than outer diameter tube 5-10mm to be repaired, peep hole is set on anchor ear, the peep hole spacing is not more than 30cm, peep hole is equipped with ball valve, can free switch, seam crossing and bottom at two anchor ears are equipped with rubber weather strip, while guaranteeing cast, material is not from anchor ear bottom and joint leadkage, and anchor ear up and down inward flange is provided with the thick code of limit, limits the size of thick code to be slightly larger than cast thickness, guarantee anchor ear is fixed on pipeline, do not rock during construction.
Pouring machine in described step 5 is Airless spraying equipment, join high-voltage tube, the high-voltage tube internal diameter is greater than 8mm, the high-voltage tube of estimating suitable length be used for to connect airless sprayer outlet and anchor ear peep hole under water on the bank, the pipe end joint can with supporting connection of anchor ear peep hole joint, peep hole is the cast intake port.
The trade mark of the material of Macromolecular pouring under water in described step 5 is for receiving plastic-steel NPS1101; The cast viscosity of Macromolecular pouring material should be lower than 3000cp under water, if temperature is lower, viscosity is higher can add suitable thinner, thinner principal item has: alkyl glycidyl ether, dibatyl phithalate, butyl glycidyl ether, phenyl glycidyl ether etc., adding quantity is no more than 2%.
The method of the operation of described step 6 is: 1, the peep hole that the high-voltage tube of airless sprayer and anchor ear is minimum is connected; 2, start airless sprayer and start cast, adjust flux is to 5L/min; 3, when having seen that material flows out certain peep hole, namely close this peep hole ball valve; 4, can raise the efficiency in turn from each peep hole charging of bottom, reduce flow time; When 5, overflow each position from top until material, can stop charging, complete cast.
The present invention has following beneficial effect: can be in the situation that do not dismantle pipeline and change the problem that pipeline solution submarine pipeline leaks, and can solve pipeline because being subjected to corrosion thinning to cause the danger of fracture, can be fast, the leakage of convenient, permanent reparation underwater line.
Embodiment:
Embodiment one: its reparation step is: 1, leak and outer peripheral areas are cleaned; 2, water compacted under repair materials is blocked leak; 3, strengthen fixing with band; 4, after the moulding repair materials is done solid work under water, install and done bottom and the pre-sealed anchor ear of seam crossing; 5, start pouring machine, start to pour into a mould Macromolecular pouring material under water; 6, complete the underwater pouring process, stop charging.
The operating method of described step 1 is: at first in the plan cast zone of pipeline, with high pressure water gun, carries out Integral cleaning, removes the foreign material on surface, such as: floating rust, oyster etc.; Then polish to the St2.0 level with pneumatic angle grinding machine around each leak; Finally on the surface of pipe to be repaired with several endless belt of pneumatic angle grinding machine polishing, more than requiring to reach the St2.0 level, with the raising combination force, the endless belt area is not less than 20% of zone to be cast, and all Leak hole upper and lowers all have endless belt.
The operating method of described step 2 is: 1, mix on the water base-material and the curing agent of moulding repair materials under water; 2, the above-mentioned material that mixes is spread upon on the tinplate of having polished uniformly; 3, with rope, the tinplate of smearing good material is passed to the diver; 4, the diver presses tinplate at the Leak hole place, and keeps certain pressure always, until step 3 is completed.
The model of the repair materials of moulding under water of selecting in described step 2 is for receiving plastic-steel NPS8110.
Band in described step 3 is the stainless steel band, is furnished with special-purpose tightening device, and this step is completed by another diver.
Anchor ear in described step 4 is low-carbon steel material, before construction, internal surface is through sand blast, the anchor ear internal diameter is greater than outer diameter tube 5-10mm to be repaired, peep hole is set on anchor ear, the peep hole spacing is not more than 30cm, peep hole is equipped with ball valve, can free switch, seam crossing and bottom at two anchor ears are equipped with rubber weather strip, while guaranteeing cast, material is not from anchor ear bottom and joint leadkage, and anchor ear up and down inward flange is provided with the thick code of limit, limits the size of thick code to be slightly larger than cast thickness, guarantee anchor ear is fixed on pipeline, do not rock during construction.
Pouring machine in described step 5 is Airless spraying equipment, join high-voltage tube, the high-voltage tube internal diameter is greater than 8mm, the high-voltage tube of estimating suitable length be used for to connect airless sprayer outlet and anchor ear peep hole under water on the bank, the pipe end joint can with supporting connection of anchor ear peep hole joint, peep hole is the cast intake port.
The trade mark of the material of Macromolecular pouring under water in described step 5 is for receiving plastic-steel NPS1101; The cast viscosity of Macromolecular pouring material should be lower than 3000cp under water, if temperature is lower, viscosity is higher can add suitable thinner, thinner principal item has: alkyl glycidyl ether, dibatyl phithalate, butyl glycidyl ether, phenyl glycidyl ether etc., adding quantity is no more than 2%.
The method of the operation of described step 6 is: 1, the peep hole that the high-voltage tube of airless sprayer and anchor ear is minimum is connected; 2, start airless sprayer and start cast, adjust flux is to 5L/min; 3, when having seen that material flows out certain peep hole, namely close this peep hole ball valve; 4, can raise the efficiency in turn from each peep hole charging of bottom, reduce flow time; When 5, overflow each position from top until material, can stop charging, complete cast.
This embodiment can be in the situation that do not dismantle pipeline and change pipeline and solve the problem that submarine pipeline leaks, and can solve pipeline because being subjected to corrosion thinning to cause the danger of fracture, can be fast, conveniently, the leakage of permanent reparation underwater line.
Embodiment two: this embodiment is that with embodiment one difference the band in described step 3 can also adopt strong magnet to replace, and other reparation steps are all identical with embodiment one with operating method.
Described strong magnet thickness is 2mm, is single face magnet.
Embodiment: repair the 10 meters leakages that occur to 30 meters under water of certain offshore oil platform caisson pipe.
The reparation step is:
1, the diver slips into caisson pipe leakage region, carries out self with strong magnet and fixes, and with high pressure water gun, removes all unstable attachments in the anchor ear scope, such as: oyster, floating rust etc.;
2, the diver polishes with pneumatic angle grinding machine to leak and neighboring area, and is good the Leak hole edging, requires to process the level to St2.0;
3, the deployed plastic-steel NPS8110 moulding repair materials and being transferred on the tinplate of having polished under water of receiving, pass to the diver, and the diver is by in leak and keep suitable pressure;
4, another diver is fixed on tinplate on the caisson pipe with 2 stainless steel bands;
5, block all leak sources with above-mentioned same method;
6, after 60 minutes, interior sandblast and the good anchor ear of encapsulation process have been done in lifting, and fixedly centering is installed;
7, the outlet of airless sprayer is connected with a minimum peep hole of high-voltage tube and anchor ear;
8, mix and receive plastic-steel NPS1101 base-material and the curing agent of Macromolecular pouring material under water, and add below a small amount of thinner adjusting viscosity to 3000 cp;
The Macromolecular pouring material that 9, will mix is poured airless sprayer into, starts airless sprayer and starts cast;
10, when having seen that material flows out certain peep hole, namely close this peep hole ball valve;
11,, respectively from anchor ear each peep hole charging of bottom, when seeing that material overflows from each position, anchor ear top, can stop cast;
12, complete curing after 48 hours, can come into operation.
Claims (10)
1. a submarine pipeline leaks the cast restorative procedure, it is characterized in that its reparation step is: 1, leak and outer peripheral areas are cleaned; 2, water compacted under repair materials is blocked leak; 3, strengthen fixing with band; 4, after the moulding repair materials is done solid work under water, install and done bottom and the pre-sealed anchor ear of seam crossing; 5, start pouring machine, start to pour into a mould Macromolecular pouring material under water; 6, complete the underwater pouring process, stop charging.
2. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, the operating method that it is characterized in that described step 1 is: at first in the plan cast zone of pipeline, with high pressure water gun, carry out Integral cleaning, remove the foreign material on surface, then polish to the St2.0 level with pneumatic angle grinding machine around each leak; Finally on the surface of pipe to be repaired with many endless belt of pneumatic angle grinding machine polishing, more than requiring to reach the St2.0 level, with the raising combination force, the endless belt area is not less than 20% of zone to be cast, and all Leak hole upper and lowers all have endless belt.
3. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, it is characterized in that the operating method of described step 2 is: 1, mix on the water base-material and the curing agent of moulding repair materials under water; 2, the above-mentioned material that mixes is spread upon on the tinplate of having polished uniformly; 3, with rope, the tinplate of smearing good material is passed to the diver; 4, the diver presses tinplate at the Leak hole place, and keeps certain pressure always, until step 3 is completed.
4. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, it is characterized in that the model of the moulding under water of selecting in described step 2 repair materials is for receiving plastic-steel NPS8110.
5. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, it is characterized in that the band in described step 3 is the stainless steel band, is furnished with special-purpose tightening device, and this step is completed by another diver.
6. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, it is characterized in that the anchor ear in described step 4 is low-carbon steel material, before construction, internal surface is through sand blast, the anchor ear internal diameter is greater than outer diameter tube 5-10mm to be repaired, peep hole is set on anchor ear, the peep hole spacing is not more than 30cm, peep hole is equipped with ball valve, can free switch, seam crossing and bottom at two anchor ears are equipped with rubber weather strip, while guaranteeing cast, material is not from anchor ear bottom and joint leadkage, anchor ear up and down inward flange is provided with the thick code of limit, limit the size of thick code to be slightly larger than cast thickness, guarantee anchor ear is fixed on pipeline, do not rock during construction.
7. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, it is characterized in that the pouring machine in described step 5 is Airless spraying equipment, join high-voltage tube, the high-voltage tube internal diameter is greater than 8mm, the high-voltage tube of estimating suitable length be used for to connect airless sprayer outlet and anchor ear peep hole under water on the bank, the pipe end joint can with supporting connection of anchor ear peep hole joint, peep hole is the cast intake port.
8. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, it is characterized in that the trade mark of the material of Macromolecular pouring under water in described step 5 is for receiving plastic-steel NPS1101; The cast viscosity of Macromolecular pouring material should be lower than 3000cp under water.
9. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, and it is characterized in that the method for the operation of described step 6 is: 1, the peep hole that the high-voltage tube of airless sprayer and anchor ear is minimum is connected; 2, start airless sprayer and start cast, adjust flux is to 5L/min; 3, when having seen that material flows out certain peep hole, namely close this peep hole ball valve; 4, should raise the efficiency in turn from each peep hole charging of bottom, reduce flow time; When 5, overflow each position from top until material, stop charging, complete cast.
10. a kind of submarine pipeline according to claim 1 leaks the cast restorative procedure, it is characterized in that the band in described step 3 can also adopt strong magnet to replace; Strong magnet thickness is 2mm, is single face magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101360912A CN102620108B (en) | 2012-05-04 | 2012-05-04 | Pouring repair method for leakage of underwater pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101360912A CN102620108B (en) | 2012-05-04 | 2012-05-04 | Pouring repair method for leakage of underwater pipeline |
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| Publication Number | Publication Date |
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| CN102620108A CN102620108A (en) | 2012-08-01 |
| CN102620108B true CN102620108B (en) | 2013-11-13 |
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| CN2012101360912A Active CN102620108B (en) | 2012-05-04 | 2012-05-04 | Pouring repair method for leakage of underwater pipeline |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104421567A (en) * | 2013-08-23 | 2015-03-18 | 上海金艺检测技术有限公司 | Gas pipe corrosion defect under-pressure repair method |
| CN113339624B (en) * | 2021-07-08 | 2022-08-30 | 四川达兴能源有限责任公司 | Online leakage blocking method for debenzolization tower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0297385A1 (en) * | 1987-06-30 | 1989-01-04 | Chevron Research And Technology Company | Pipeline rehabilitation method utilizing articulated gasketed joint pipe |
| CN101095009A (en) * | 2004-12-03 | 2007-12-26 | 伊利诺斯器械工程公司 | System and method for pipe repair |
| CN101575419A (en) * | 2008-05-09 | 2009-11-11 | 中国石油天然气股份有限公司 | Method for preparing repair prepreg for pipelines with defects |
| CN201661816U (en) * | 2009-12-29 | 2010-12-01 | 北京管通科技开发有限责任公司 | Quick stop-leak strapping tape |
| CN202040476U (en) * | 2010-12-31 | 2011-11-16 | 山东海盛海洋工程集团有限公司工程公司 | Leakage mending device of pipeline in the sea |
| CN102296647A (en) * | 2011-06-13 | 2011-12-28 | 鲁毅 | Method for permanently repairing leaked sinking caisson of offshore oil platform |
-
2012
- 2012-05-04 CN CN2012101360912A patent/CN102620108B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0297385A1 (en) * | 1987-06-30 | 1989-01-04 | Chevron Research And Technology Company | Pipeline rehabilitation method utilizing articulated gasketed joint pipe |
| CN101095009A (en) * | 2004-12-03 | 2007-12-26 | 伊利诺斯器械工程公司 | System and method for pipe repair |
| CN101575419A (en) * | 2008-05-09 | 2009-11-11 | 中国石油天然气股份有限公司 | Method for preparing repair prepreg for pipelines with defects |
| CN201661816U (en) * | 2009-12-29 | 2010-12-01 | 北京管通科技开发有限责任公司 | Quick stop-leak strapping tape |
| CN202040476U (en) * | 2010-12-31 | 2011-11-16 | 山东海盛海洋工程集团有限公司工程公司 | Leakage mending device of pipeline in the sea |
| CN102296647A (en) * | 2011-06-13 | 2011-12-28 | 鲁毅 | Method for permanently repairing leaked sinking caisson of offshore oil platform |
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