CN100523578C - Quick-speed sealing compensating method of submarine pipeline welding line joint and locking type sheath used - Google Patents
Quick-speed sealing compensating method of submarine pipeline welding line joint and locking type sheath used Download PDFInfo
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- CN100523578C CN100523578C CNB200710017197XA CN200710017197A CN100523578C CN 100523578 C CN100523578 C CN 100523578C CN B200710017197X A CNB200710017197X A CN B200710017197XA CN 200710017197 A CN200710017197 A CN 200710017197A CN 100523578 C CN100523578 C CN 100523578C
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- steel pipe
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- upper jacket
- sheathings
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Abstract
The invention provides a submarine pipeline weld joint rapid mending method. A thermal contract tape is twined round or thermal contract tube coating is covered on the weld joint of a steel pipe and the exposed outer surface of the steel pipe near the weld joint. The invention is characterized in that when encapsulating, the inner surfaces and the side surfaces of a half-barrel shaped upper sheathing and a lower sheathing are coated with newly mixed polyurethane and covered on the coating on the steel pipe outer surface immediately. When positioning buckles of the upper and the lower sheathings are buckled with each other, a position fixing stick is inlayed into a groove of the positioning buckle. Then a strapping tape is used for connecting the upper and the lower sheathings with a balance weight layer. The buckling sheathing for the rapid mending way comprises the half-barrel shaped upper and lower sheathings, the positioning buckles buckled with each other and arranged on the butting edges and surfaces of the upper and the lower sheathings and the position fixing stick inlayed into the groove of the positioning buckle. The invention has the advantages of low cost and easy and rapid operation and can be implemented with semi-mechanized operation easily.
Description
Technical field
The present invention relates to the quick sealing compensating method of a kind of seabed conveyance conduit welding line joint and used make-up sheath.
Background technique
Lay in the submarine pipeline work progress at present, the common method of handling individual layer counterweight line pipe joint be the butt welded seam flaw detection qualified after with weld seam leveling, be wrapped pyrocondensation belt or heat-shrink tube as overlay, be surrounded as tubular at the sea of butt joint pipe outer wall with iron sheet then, and in tube, inject hot melt agate hoof ester, its shortcoming is that manual perfusion agate hoof ester operating environment is poor, operation slowly, difficult quality guarantee, and under easily binder is pulled apart when managing.Recently use high density polyurethane foam material instead and substitute agate hoof ester, improving construction quality and operating environment, but cost is higher, and suction easily, infiltration and erosion in causing.Owing to adopt in this method iron sheet to surround, not only can corrosion and destruction, and have electric conductivity, therefore do not adopted this method abroad.Abroad consider from the environmental protection aspect, only twine pyrocondensation belt sometimes, do not add agate hoof ester, or use elastomer urethane (as HYPERLAST) replacement agate hoof ester instead, but the former protection effect is not good, latter's expense is higher.In addition,, increase the actual spoilage rate because the joint processing is bad, thus in cathodic protection, need to increase sacrificial anode quantity, thus increase Master Cost, and influence pipelaying rate.Therefore, in the pipe laying construction process, need pipe to be connect envelope and mend processing simplification, standardization, mechanization, to improve speed of application and quality.
Summary of the invention
The purpose of this invention is to provide a kind of quick sealing compensating method of submarine pipeline welding line joint and used make-up sheath of being applicable to, it can improve speed of application and quality, and reduction expense and labour improve operating environmental condition, to satisfy the demand of prior art.
A kind of quick sealing compensating method of submarine pipeline welding line joint, near the outer surface of steel tube that exposes to the open air the joint welding of steel pipe reaches twines pyrocondensation belt or heat-shrink tube coating earlier, when it is characterized in that encapsulating the inner face and the side of semi-cylindrical shaped upper jacket and lower jacket are smeared the polyurethane that just has been mixed respectively, and be buckled in immediately on the coating of outer surface of steel tube, after the locating button between upper jacket and the lower jacket plugs together mutually, maintenance rod is embedded in the groove of locating button, with strapping strand upper jacket and lower jacket and weight coating are coupled together again.
Implement the used make-up sheath of above-mentioned quick sealing compensating method, it is characterized in that having semi-cylindrical shaped upper jacket and lower jacket, upper jacket and lower jacket to the locating button of mutual inserting is all arranged on the edge fit face, have maintenance rod to embed in the groove of locating button.
Advantage of the present invention is that cost is lower; Convenient and quick construction realizes semi-mechanized operation easily; The intensity of selected four kinds of make-up sheath materials is all greater than matizhi and polyurethane foam material; Anti-corrosive properties and sealing and matizhi are similar, but quality guarantees easily; The feature of environmental protection and the operating condition at pipe laying scene significantly improve.
Description of drawings
Accompanying drawing 1 is a make-up jacket structure schematic representation of the present invention.
Accompanying drawing 2 is its user mode reference drawing.
Embodiment
Make-up sheath of the present invention has semi-cylindrical shaped upper jacket 1 and lower jacket 2, and the locating button 3 of mutual inserting is all arranged on upper jacket 1 and 2 pairs of edge fit faces of lower jacket, has maintenance rod 4 to embed in the groove of locating buttons 3.By method of the present invention, near steel pipe 6 outer surfaces that expose to the open air the joint welding 7 of steel pipe 6 reaches twine pyrocondensation belt or heat-shrink tube coating 8 earlier.When encapsulating, the inner face and the side of semi-cylindrical shaped upper jacket 1 and lower jacket 2 are smeared the polyurethane 5 that just has been mixed respectively, and be buckled in immediately on the coating 8 of steel pipe 6 outer surfaces, polyurethane 5 is full of the space and makes upper jacket 1, lower jacket 2 and coating 8 bondings fastening after the place's of smearing foaming.After the locating button 3 of interworking on semi-cylindrical shaped upper jacket 1 and 2 pairs of edge fit faces of lower jacket plugged together, in the groove of locating button 3, embed maintenance rod 4, it is fixing that upper jacket 1 is engaged with lower jacket 2, with strapping strand 10 upper jacket 1, lower jacket 2 coupled together with weight coating 9 again.
Require and practical condition according to extra large pipe construction, select four kinds of complex materials to make above-mentioned upper jacket 1, lower jacket 2, be light cement (cement+sand+perlite), modified gypsum or calcium silicate (major ingredient+strengthening agent+water repellent agent+auxiliary material), organic/inorganic blending material (PVC or PE powder+limestone or pulverized fuel ash) or organic/inorganic composite material (envelope filled gypsum of hard PVC or light cement etc.).
Claims (3)
1, a kind of quick sealing compensating method of submarine pipeline welding line joint, near steel pipe (6) outer surface that exposes to the open air the joint welding (7) of steel pipe (6) reaches twines pyrocondensation belt or heat-shrink tube coating (8) earlier, when it is characterized in that encapsulating the inner face and the side of semi-cylindrical shaped upper jacket (1) and lower jacket (2) are smeared the polyurethane (5) that just has been mixed respectively, and be buckled in immediately on the coating (8) of steel pipe (6) outer surface, after the locating button (3) between upper jacket (1) and the lower jacket (2) plugs together mutually, maintenance rod (4) is embedded in the groove of locating button (3), use strapping strand (10) that upper jacket (1) and lower jacket (2) are coupled together with weight coating (9) again.
2, sealing compensating method as claimed in claim 1 is characterized in that described upper jacket (1) and lower jacket (2) make by one of following material: light cement; The mixture of PVC and pulverized fuel ash; Modified gypsum or calcium silicate; The envelope filled gypsum of hard PVC.
3, the used make-up sheath of the described quick sealing compensating method of claim 1, it is characterized in that having semi-cylindrical shaped upper jacket (1) and lower jacket (2), upper jacket (1) and lower jacket (2) to the locating button (3) of mutual inserting is all arranged on the edge fit face, have maintenance rod (4) to embed in the groove of locating button (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710017197XA CN100523578C (en) | 2007-09-28 | 2007-09-28 | Quick-speed sealing compensating method of submarine pipeline welding line joint and locking type sheath used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710017197XA CN100523578C (en) | 2007-09-28 | 2007-09-28 | Quick-speed sealing compensating method of submarine pipeline welding line joint and locking type sheath used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101158420A CN101158420A (en) | 2008-04-09 |
| CN100523578C true CN100523578C (en) | 2009-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710017197XA Expired - Fee Related CN100523578C (en) | 2007-09-28 | 2007-09-28 | Quick-speed sealing compensating method of submarine pipeline welding line joint and locking type sheath used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100523578C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900893A (en) * | 2012-10-25 | 2013-01-30 | 中国海洋石油总公司 | Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864509B (en) * | 2016-06-06 | 2017-11-21 | 青岛理工大学 | One kind changes pipeline section and quickly repairs submarine pipeline method |
| CN106122591B (en) * | 2016-07-14 | 2017-12-29 | 青岛理工大学 | Guiding type inflator balances submarine pipeline access device and method |
| CN108979559A (en) * | 2018-09-20 | 2018-12-11 | 广东科诺勘测工程有限公司 | A kind of steel bushing pipe connection |
| CN109449860B (en) * | 2018-12-06 | 2020-12-01 | 桐乡市隆源纺织有限公司 | Cable protection and arrangement cover |
| CN112879662A (en) * | 2021-03-26 | 2021-06-01 | 海洋石油工程股份有限公司 | Manufacturing process and installation method suitable for submarine pipeline landing dragging buoy |
| CN114294476B (en) * | 2021-12-06 | 2023-11-14 | 海洋石油工程股份有限公司 | Efficient passing method of corrosion-resistant equipment in sea pipe node |
-
2007
- 2007-09-28 CN CNB200710017197XA patent/CN100523578C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900893A (en) * | 2012-10-25 | 2013-01-30 | 中国海洋石油总公司 | Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe |
| CN102900893B (en) * | 2012-10-25 | 2014-11-26 | 中国海洋石油总公司 | Plugging device and plugging method for annular space of submarine double-layer oil conveying pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101158420A (en) | 2008-04-09 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20120928 |