CN1316327A - Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe - Google Patents
Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe Download PDFInfo
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- CN1316327A CN1316327A CN 01116449 CN01116449A CN1316327A CN 1316327 A CN1316327 A CN 1316327A CN 01116449 CN01116449 CN 01116449 CN 01116449 A CN01116449 A CN 01116449A CN 1316327 A CN1316327 A CN 1316327A
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- density polyethylene
- polyethylene pipe
- high density
- pipeline
- used pipeline
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Abstract
A method for on-line repairing used pipeline by inserting high-density polyethylene tube incldues such steps as locating the used pipeline, cleaning the used pipeline, removing obstacle, deforming the used pipeline, butt connection of high-density polyethylene tubes, reducing its diameter, inserting the tube, closing the used pipeline with the polyethylene tube, treating and connecting the ends, and pressure test. Its advantages include low cleaning requirement to used pipeline, long repaired distance, high integrity and sealing performance, low cost and long service life.
Description
The present invention relates to pipe rehabilitation technology, the especially interspersed online repairing used pipeline method of high density polyethylene pipe.
Original technology: original pipe rehabilitation technology has complex fiber hose turnover technology and polymer cement mortar coating technology.Because these two kinds of technique building technology complexity, long construction period, to being repaired pipeline cleaning requirement height, working life is short, especially the complex fiber hose turnover technology is once repaired distance short (in the 400m), has limited applying of old pipe rehabilitation technology greatly.
The purpose of this invention is to provide the interspersed online repairing used pipeline method of high density polyethylene pipe, the high density polyethylene pipe that will be fit to size exactly inserts in the old pipeline of needs reparation, utilize the shock resistance of former pipeline external enwergy, interior energy bearing capacity and characteristics such as high density polyethylene pipe is corrosion-resistant, wear-resistant, heatproof, long lifetime, form " pipe-in-pipe " composite structure, make the pipeline after repairing just possess the overall characteristic of steel pipe and high density polyethylene pipe.
The object of the present invention is achieved like this, and its basic craft course is: old pipeline location-old pipeline original position is cleaned, removed obstacles---old pipeline modification---high density polyethylene pipe butt joint---high density polyethylene pipe undergauge---high density polyethylene pipe interts---high density polyethylene pipe is fitted with old pipeline---port is handled and is connected---pressure testing, operation.Technical parameter is: the high density polyethylene pipe of finishing butt joint directly enters special-purpose size reducing machine and carries out undergauge, and cut-off is 10%.High density polyethylene pipe behind the undergauge directly interts by tractor traction and enters pipeline, tractive force be less than high density polyethylene pipe the tensile yield limit 50%.
Owing to adopted such scheme, make the whole advantages that just possessed high density polyethylene pipe with the pipeline after the present technique reparation, its bearing capacity is also higher simultaneously, as at wall thickness being the hole of beating Φ 12 on the old steel pipe of 7mm, behind the liner HDPE pipe, bearing capacity reaches 2MPa.The present invention is low to old pipeline cleaning requirement, has reduced pigging time and input; Once repair distance, excavation point and excavated volume are few; Form flange by bushing pipe, integrity and good airproof performance; Short construction period, the old pipeline of 1km is finished from the pigging to the reparation, need only can finish in seven days, has reduced the off-time; Applied range, all available its reparation of old pipeline of industries such as oil field, petrochemical industry, electric power, town water supply, combustion gas; Rehabilitation expense is low, is newly to go up 50% of pipeline layout cost; Long service life can be for 50 years.
Claims (2)
1, the interspersed online repairing used pipeline method of high density polyethylene pipe,------old pipeline modification---high density polyethylene pipe butt joint---high density polyethylene pipe undergauge------pressure testing that high density polyethylene pipe is fitted with old pipeline---port is handled and is connected---that high density polyethylene pipe interts that old pipeline original position is cleaned, removed obstacles that it is characterized in that: basic craft course is old pipeline location.
2, the online repairing used pipeline method of interspersed high density polyethylene pipe according to claim 1, it is characterized in that: technical parameter is, the high density polyethylene pipe of finishing butt joint directly enters special-purpose size reducing machine and carries out undergauge, cut-off is 10%, high density polyethylene pipe behind the undergauge is by the directly interspersed target approach pipeline of tractor traction, and tractive force is less than 50% of the high density polyethylene pipe tensile yield limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01116449 CN1316327A (en) | 2001-04-16 | 2001-04-16 | Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01116449 CN1316327A (en) | 2001-04-16 | 2001-04-16 | Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1316327A true CN1316327A (en) | 2001-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01116449 Pending CN1316327A (en) | 2001-04-16 | 2001-04-16 | Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe |
Country Status (1)
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| CN (1) | CN1316327A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447476C (en) * | 2005-04-30 | 2008-12-31 | 中国科学院金属研究所 | Construction process for online inner coating protection of on-service underground pipeline and its special apparatus |
| CN102128309A (en) * | 2010-10-29 | 2011-07-20 | 广东联塑科技实业有限公司 | Non-excavation steel pipe repair technology |
| CN102192383A (en) * | 2010-03-01 | 2011-09-21 | 五冶集团上海有限公司 | Online repair method for asbestos type expansion joint of pipeline |
| CN102506264A (en) * | 2011-11-16 | 2012-06-20 | 河南中拓石油工程技术股份有限公司 | Process for rehabilitation of old pipeline by lining insertion method and device for implementing process |
| CN103216704A (en) * | 2013-04-22 | 2013-07-24 | 中国建筑第七工程局有限公司 | Existing pipeline repairing method |
| CN103322372A (en) * | 2013-06-17 | 2013-09-25 | 内蒙古亿利塑业有限责任公司 | Trenchless pipeline repair method with PVC (polyvinyl chloride) pipe |
| CN104272006A (en) * | 2012-03-29 | 2015-01-07 | 韦文有限公司 | Device and method for installing a compact pipe within a pipeline |
| CN104747859A (en) * | 2015-03-20 | 2015-07-01 | 辽宁三和环境工程有限公司 | Excavation-free pipeline quick repair method and traction rod for same |
| CN106984945A (en) * | 2017-03-22 | 2017-07-28 | 河南中拓石油工程技术股份有限公司 | A kind of small-bore pipeline no-dig technique stainless steel tube inner lining process |
| CN107606380A (en) * | 2017-09-29 | 2018-01-19 | 北京中财万鑫科技有限公司 | A kind of pipe renovating system and method |
| CN110594498A (en) * | 2018-06-12 | 2019-12-20 | 中国石油天然气股份有限公司 | Method for upgrading pipeline |
-
2001
- 2001-04-16 CN CN 01116449 patent/CN1316327A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100447476C (en) * | 2005-04-30 | 2008-12-31 | 中国科学院金属研究所 | Construction process for online inner coating protection of on-service underground pipeline and its special apparatus |
| CN102192383A (en) * | 2010-03-01 | 2011-09-21 | 五冶集团上海有限公司 | Online repair method for asbestos type expansion joint of pipeline |
| CN102192383B (en) * | 2010-03-01 | 2012-11-07 | 五冶集团上海有限公司 | Online repair method for asbestos type expansion joint of pipeline |
| CN102128309A (en) * | 2010-10-29 | 2011-07-20 | 广东联塑科技实业有限公司 | Non-excavation steel pipe repair technology |
| CN102506264A (en) * | 2011-11-16 | 2012-06-20 | 河南中拓石油工程技术股份有限公司 | Process for rehabilitation of old pipeline by lining insertion method and device for implementing process |
| CN104272006B (en) * | 2012-03-29 | 2016-11-16 | 韦文有限公司 | For installing the equipment to pipeline and method by compressing pipe |
| CN104272006A (en) * | 2012-03-29 | 2015-01-07 | 韦文有限公司 | Device and method for installing a compact pipe within a pipeline |
| CN103216704A (en) * | 2013-04-22 | 2013-07-24 | 中国建筑第七工程局有限公司 | Existing pipeline repairing method |
| CN103216704B (en) * | 2013-04-22 | 2016-01-06 | 中国建筑第七工程局有限公司 | Existing pipe repairing method |
| CN103322372A (en) * | 2013-06-17 | 2013-09-25 | 内蒙古亿利塑业有限责任公司 | Trenchless pipeline repair method with PVC (polyvinyl chloride) pipe |
| CN103322372B (en) * | 2013-06-17 | 2015-11-25 | 内蒙古亿利塑业有限责任公司 | One pvc pipe carries out no-dig technique pipe repairing method |
| CN104747859A (en) * | 2015-03-20 | 2015-07-01 | 辽宁三和环境工程有限公司 | Excavation-free pipeline quick repair method and traction rod for same |
| CN106984945A (en) * | 2017-03-22 | 2017-07-28 | 河南中拓石油工程技术股份有限公司 | A kind of small-bore pipeline no-dig technique stainless steel tube inner lining process |
| CN107606380A (en) * | 2017-09-29 | 2018-01-19 | 北京中财万鑫科技有限公司 | A kind of pipe renovating system and method |
| CN110594498A (en) * | 2018-06-12 | 2019-12-20 | 中国石油天然气股份有限公司 | Method for upgrading pipeline |
| CN110594498B (en) * | 2018-06-12 | 2021-04-30 | 中国石油天然气股份有限公司 | Method for upgrading pipeline |
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| SE01 | Entry into force of request for substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |