CN102784966A - Branch line connecting technology adopting no valve during hot tapping - Google Patents
Branch line connecting technology adopting no valve during hot tapping Download PDFInfo
- Publication number
- CN102784966A CN102784966A CN2012102525081A CN201210252508A CN102784966A CN 102784966 A CN102784966 A CN 102784966A CN 2012102525081 A CN2012102525081 A CN 2012102525081A CN 201210252508 A CN201210252508 A CN 201210252508A CN 102784966 A CN102784966 A CN 102784966A
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- perforate
- valve
- tapping machine
- connecting box
- pipe fitting
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Abstract
The invention relates to a branch line connecting technology adopting no valve during hot tapping. The technology comprises the following steps: mounting and welding paired semicircular non-sealing head four-way pipes to a to-be-bored main pipeline; butting to-be-connected branch lines with the connection ports of the four-way pipes; and mounting a temporary bored gate valve, a boring machine and a bored connecting box on operation ports of the four-way pipes while well supporting the temporary bored gate valve, the boring machine and the bored connecting box. The boring machine is used for boring, and is dismantled after the boring is fulfilled; and formation sealing pies and blind plates are mounted on the operation ports. The technology has the benefits that the normal delivery of a pipeline cannot be impacted during the construction process; the technology is simple; the operation is convenient; and no valve is arranged between the main pipeline and branch lines, so as to reduce cost and follow-up maintenance and potential safety hazards.
Description
Technical field
The present invention relates to a kind of connecing and prop up a Wiring technology without the valve press and open holes.
Background technology
Often run in gas, the liquid pipe-line transportation system and need on trunk line, install branch line additional,, often adopt the press and open holes facility to carry out the press and open holes operation for not influencing the normal conveying of gas-liquid; But the press and open holes operation need be provided with valve between trunk line and arm, because the valve expense is high, valve mechanism is complicated; Damage because of reasons such as corrosion easily; There is potential safety hazard, need often detects and safeguard, increased workload.
Summary of the invention
The object of the present invention is to provide that a kind of technology is simple without need not mounted valve after the valve perforate, easy to operate, not fragile, can practice thrift a seat valve door during construction, the valveless press and open holes apparatus and method that later maintenance cost is low.
Technical scheme of the present invention is:
A kind of connecing without the valve press and open holes propped up a Wiring technology, at first is installed to paired semicircle four-way pipe fitting on female pipeline of wanting perforate and welding; Dock the branch line that will connect with the connectivity port of four-way pipe fitting then; At the operation port of four-way pipe fitting slide valve, tapping machine and perforate connecting box are installed then, and are carried out support, tapping machine carries out the perforate operation, after perforate finishes, removes tapping machine, at the operation port shutoff cake and blind plate is installed.
Further, install tapping machine after, four-way pipe fitting, slide valve, perforate connecting box are implemented nitrogen test pressure and leak detection work, test pressure is consistent with the pipeline operating pressure, with leak detector or suds leak detection, pressurize 10-15 minute, no seepage and no leakage was qualified.
Further, before the perforate operation, four-way pipe fitting, slide valve, perforate connecting box and tapping machine are carried out nitrogen replacement; Carry out the perforate operation then, after perforate finished, boring cutter was mentioned; Close slide valve, flashboard epicoele gas is diffused, remove tapping machine and perforate connecting box.
The invention has the beneficial effects as follows: reduce construction cost, do not influence the normal conveying of pipeline in the work progress, technology is simple, and is easy to operate, and valve is not set between female pipeline and the branch line, reduces the maintenance and the potential safety hazard in later stage.
The specific embodiment
A kind of connecing without the valve press and open holes propped up a Wiring technology, may further comprise the steps:
The first step: be installed to paired semicircle four-way pipe fitting on female pipeline of wanting perforate and welding;
Second step: dock the branch line that will connect with the connectivity port of four-way pipe fitting;
The 3rd step: the operation port at four-way pipe fitting is installed slide valve, tapping machine and perforate connecting box, and carries out support;
The 4th step: four-way pipe fitting, seam flange, slide valve, perforate connecting box are implemented nitrogen test pressure and leak detection work, and test pressure is consistent with the pipeline operating pressure, and with leak detector or suds leak detection, pressurize 10-15 minute, no seepage and no leakage was qualified;
The 5th step: four-way pipe fitting, slide valve, perforate connecting box and tapping machine are carried out nitrogen replacement;
The 6th step: carry out the perforate operation, after perforate finished, boring cutter was mentioned, and closed slide valve, and flashboard epicoele gas is diffused, and removed tapping machine and perforate connecting box;
The 7th step: shutoff cake and blind plate are installed at the operation port.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (3)
1. one kind connects Wiring technology without the valve press and open holes, it is characterized in that, at first is installed to paired semicircle four-way pipe fitting on female pipeline of wanting perforate and welds; Dock the branch line that will connect with the connectivity port of four-way pipe fitting then; At the operation port of four-way pipe fitting slide valve, tapping machine and perforate connecting box are installed then, and are carried out support, tapping machine carries out the perforate operation, after perforate finishes, removes tapping machine, at the operation port shutoff cake and blind plate is installed.
2. prop up a Wiring technology according to said a kind of the connecing of claim 1 without the valve press and open holes; It is characterized in that, install tapping machine after, four-way pipe fitting, slide valve, perforate connecting box are implemented nitrogen test pressure and leak detection work; Test pressure is consistent with the pipeline operating pressure; With leak detector or suds leak detection, pressurize 10-15 minute, no seepage and no leakage was qualified.
3. prop up a Wiring technology according to claim 1 or 2 said a kind of connecing, it is characterized in that, before the perforate operation without the valve press and open holes; Four-way pipe fitting, slide valve, perforate connecting box and tapping machine are carried out nitrogen replacement, carry out the perforate operation then, after perforate finishes; Boring cutter is mentioned; Close slide valve, flashboard epicoele gas is diffused, remove tapping machine and perforate connecting box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102525081A CN102784966A (en) | 2012-07-20 | 2012-07-20 | Branch line connecting technology adopting no valve during hot tapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102525081A CN102784966A (en) | 2012-07-20 | 2012-07-20 | Branch line connecting technology adopting no valve during hot tapping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102784966A true CN102784966A (en) | 2012-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102525081A Pending CN102784966A (en) | 2012-07-20 | 2012-07-20 | Branch line connecting technology adopting no valve during hot tapping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102784966A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100789A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气集团公司 | Non-shutdown lead-out branch cross joint for in-service oil and gas pipeline |
| CN109161387A (en) * | 2018-10-19 | 2019-01-08 | 山西鸿泰来科技有限公司 | A kind of coke oven gas collecting tube power failure release remodeling method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515177A (en) * | 1982-04-29 | 1985-05-07 | George Fischer Limited | Molded connection piece |
| CN2322021Y (en) * | 1998-03-14 | 1999-06-02 | 江西长林机械厂特种设备公司 | Pipeline leakage repairing device without stopping transferring |
| CN102003591A (en) * | 2010-12-17 | 2011-04-06 | 李志芳 | Construction method for rapid installation of branch pipelines in main pipeline |
| CN202091698U (en) * | 2011-05-25 | 2011-12-28 | 天津新势力能源科技有限公司 | Connecting pipe device with gas drilling hole |
-
2012
- 2012-07-20 CN CN2012102525081A patent/CN102784966A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515177A (en) * | 1982-04-29 | 1985-05-07 | George Fischer Limited | Molded connection piece |
| CN2322021Y (en) * | 1998-03-14 | 1999-06-02 | 江西长林机械厂特种设备公司 | Pipeline leakage repairing device without stopping transferring |
| CN102003591A (en) * | 2010-12-17 | 2011-04-06 | 李志芳 | Construction method for rapid installation of branch pipelines in main pipeline |
| CN202091698U (en) * | 2011-05-25 | 2011-12-28 | 天津新势力能源科技有限公司 | Connecting pipe device with gas drilling hole |
Non-Patent Citations (1)
| Title |
|---|
| 鲁致博: "《带压开孔技术在炼化企业的应用》", 《中国设备工程》, no. 9, 30 September 2012 (2012-09-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100789A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气集团公司 | Non-shutdown lead-out branch cross joint for in-service oil and gas pipeline |
| CN109161387A (en) * | 2018-10-19 | 2019-01-08 | 山西鸿泰来科技有限公司 | A kind of coke oven gas collecting tube power failure release remodeling method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121121 |