CN102218752A - Polyethylene gas pipeline pressure holing device and method - Google Patents
Polyethylene gas pipeline pressure holing device and method Download PDFInfo
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- CN102218752A CN102218752A CN 201110088107 CN201110088107A CN102218752A CN 102218752 A CN102218752 A CN 102218752A CN 201110088107 CN201110088107 CN 201110088107 CN 201110088107 A CN201110088107 A CN 201110088107A CN 102218752 A CN102218752 A CN 102218752A
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Abstract
The invention discloses a polyethylene gas pipeline pressure holing device. The arc ends of a semicircular fastening piece and a semicircular tee joint piece are fixed on an outer surface of a polyethylene gas pipeline to be holed; heating wire connection ports are formed on the semicircular fastening piece and the semicircular tee joint piece; a polyethylene control valve and an air inlet are formed on a semicircular tee joint piece pipeline; the other end of the semicircular tee joint piece is connected with a holing driver through a sealed connecting pipe; and a drill bit is arranged on one side of the holing driver facing the polyethylene gas pipeline. An electrified heating wire heats to melt a connecting surface among the semicircular fastening piece, the semicircular tee joint piece and the pipeline, and polyethylene materials which are continuously molten on the contact surface are diffused to form reliable welded connection for the pipeline. By the device and the method, the polyethylene gas pipeline needing a branch pipeline is subjected to pressure holing in an operating state, the tee joint piece is arranged, lots of gas and construction time can be saved, and the invention has the advantage that: the device is easy, safe and quick to operate.
Description
Technical field
The present invention relates to fuel gas polyethylene pipeline boring device and method, especially relate to a kind of fuel gas polyethylene pipeline press and open holes device and method.
Background technology
The fuel gas polyethylene pipeline is because advantage such as its good corrosion resistance, life-span are long, in light weight, flexible, transportation and mounting cost are low, used by large-scale popularization in newly-built, in the low-pressure fuel gas pipeline.Yet the greatest problem that this kind material pipeline exists in actual use is exactly the technical problem that is connected with newly-built pipeline of in-service pipeline.At present traditional method is to close the two ends valve, and the last combustion gas of emptying causes certain waste like this, wastes time and energy, so gas pipeline press and open holes technology is necessary and to have important engineering application value.
According to CJJ 63 008 " fuel gas polyethylene pipeline engineering rules " requirement, the fuel gas polyethylene pipeline connects should adopt electric smelting connection (connection is accepted in electric smelting, the electric smelting saddle type connects) or hot melt connection (hot melt spigot-and-socket connection, hot melt butt joint connection, hot melt saddle connect), must not adopt to be threaded with bonding.Therefore propose a kind of rational press and open holes technology at this requirement and have important Practical significance.
Summary of the invention
The object of the present invention is to provide a kind of fuel gas polyethylene pipeline press and open holes device and method.
The technical solution used in the present invention is:
One, a kind of fuel gas polyethylene pipeline press and open holes device:
Comprise that inner surface is inlaid with semicircle three-way piece, polyethylene by-pass valve control, sealed joint pipe and perforate driver that the semicircle securing member of heating wire, circular arc inner surface are inlaid with heating wire; Semicircle securing member and semicircle three-way piece circular arc side one end are fixed on the outer surface that the fuel gas polyethylene pipeline needs position of opening, be respectively arranged with the heating wire Wiring port on semicircle securing member and the semicircle three-way piece, semicircle three-way piece pipeline is provided with polyethylene control valve and air admission hole, the other end of semicircle three-way piece is connected with the perforate driver by sealed joint pipe, and the perforate driver is installed drill bit towards a side of fuel gas polyethylene pipeline.
Two, a kind of fuel gas polyethylene pipeline press and open holes method:
Inner surface is inlaid with the semicircle securing member of heating wire, the semicircle three-way piece that the circular arc inner surface is inlaid with heating wire is fixed on the polyethylene pipe that needs perforate, to semicircle securing member, semicircle three-way piece is switched on simultaneously, the resistance wire that is embedded in semicircle inner surface has the power and the resistance of setting, resistance wire after the energising is heated to uniform temperature, thereby make semicircle securing member, the joint face fusion of semicircle three-way piece and pipeline, under high temperature and pressure effect, on the contact-making surface constantly after the polyethylene material phase counterdiffusion of fusion, carry out the nature cooling, the interface just obtains necessary weld strength like this, form pipeline and be welded to connect reliably, the air admission hole on the semicircle three-way piece feeds intensity and the sealing property that 0.6mpa nitrogen can detect welding; The other side of semicircle three-way piece is equipped with by-pass valve control, is in opening-wide state during the perforate operation, and an other end is furnished with sealed joint pipe and drill bit driver, and drill bit is worked in a sealed space, prevents that combustion gas leaks outside in the pipeline.
The principle of this method is:
The principle of polyethylene pipe electric smelting welding is that the energy of its heating makes the linkage interface fusion of pipe fitting and tubing with the resistance wire energising heating of electro-fusion welding machine inset at the electric melting pipe fittings inwall.After the sealing of the gap at pipe fitting two ends, the fused mass of interface melting zone is under high temperature and pressure effect, its molecule segment phase counterdiffusion, the degree of depth of phase counterdiffusion reaches the necessary size of molecular entanglement on the interface, naturally the cooling rear interface just can obtain necessary weld strength, forms pipeline and is welded to connect reliably.
The beneficial effect that the present invention has is:
This device is under the running status, and the fuel gas polyethylene pipeline that lateral need be set is implemented press and open holes, and the installing three-way piece can be saved a large amount of combustion gas and engineering time, have simple to operate, safety and advantage fast.The present invention can be used for the related online perforate pipeline of polythene material pipeline.
Description of drawings
Fig. 1 is a structural principle cutaway view of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Among the figure: 1, heating wire, 2, semicircle securing member, 3, the heating wire Wiring port, 4, semicircle three-way piece, 5, the polyethylene by-pass valve control, 6, air admission hole, 7, sealed joint pipe, 8, set bolt, 9, control panel, 10, the perforate driver, 11, drill bit, 12, fastening bolt, 13, combustion gas, 14, polyethylene pipe.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, the present invention includes inner surface and be inlaid with the semicircle securing member 2 of heating wire 1, semicircle three-way piece 4, polyethylene by-pass valve control 5, sealed joint pipe 7 and the perforate driver 10 that the circular arc inner surface is inlaid with heating wire 1; Semicircle securing member 2 and semicircle three-way piece 4 circular arc sides one end are fixed on the outer surface that fuel gas polyethylene pipeline 14 needs position of opening, be respectively arranged with heating wire Wiring port 3 on semicircle securing member 2 and the semicircle three-way piece 4, semicircle three-way piece 4 pipelines are provided with polyethylene control valve 5 and air admission hole 6, the other end of semicircle three-way piece 4 is connected with perforate driver 10 by sealed joint pipe 7, form the working space of a sealing, perforate driver 10 is installed drill bit 11 towards a side of fuel gas polyethylene pipeline 14.
Operation principle of the present invention is as follows:
At first need polyethylene pipe the position of opening outer surface thick, to remove oxide layer greater than the about 0.2mm of solder side scraping of semicircle three-way piece 4 length.Semicircle securing member 2 and semicircle three-way piece 4 circular arc sides one end are placed on fuel gas polyethylene pipeline 14 needs the position of opening both sides, and the two ends up and down of semicircle securing member 2 and semicircle three-way piece 4 contact positions screw firmly after penetrating fastening bolt 12 simultaneously.The heating wire Wiring port 3 that semicircle securing member 2 and semicircle three-way piece 4 are provided with is above connected power supply simultaneously, heating is embedded in the heating wire of semicircle securing member 2 and semicircle three-way piece 4 circular arc inside, reach the polyethylene of later half circular securing member 2 of uniform temperature and semicircle three-way piece 4 circular arc inner surfaces and the polyethylene of tapping polyethylene pipe outer surface and begin fusing, the polyethylene of two contact-making surface fusings begins to interpenetrate, fusion, powered-down behind the certain hour, heating surface is cooled to the polyethylene that melts behind the normal temperature gradually and dissolves each other mutually and be one, make semicircle securing member 2 and 4 firm being fixed on above the polyethylene pipe 14 of semicircle three-way piece, have certain intensity and sealing property like this.
Insert the perforate driver 10 that has sealed joint pipe 7 and drill bit 11 in the other end of semicircle three-way piece 4 pipelines the back, screw fastening bolt 8 after being seated, driver 10 is fixedly secured on pipeline, form certain seal cavity, guarantee that gas does not leak outside, when simultaneously sealed joint pipe 7 plays sealing function, can guarantee that also drilling rod is concentric with semicircle three-way piece 4, guarantee the precision and the stability of perforate work.
Drill bit 11 is advanced to perforate pipeline 14 skiddings, till can't advancing.PIPE DIAMETER CALCULATION according to polyethylene pipe 14 goes out the required stroke L that advances of drill bit 11 perforates.
Feed 0.6mpa nitrogen from air admission hole 6 then, keep this pressure about 10 minutes, check semicircle securing member 2 and semicircle three-way piece 4 with blowing agent or suds etc., the contact-making surface around polyethylene pipe 14 fusion and perforate driver 10 and semicircle three-way piece 4 contact-making surfaces.Nothing to be confirmed is leaked, and does not have distortion back adjusting nitrogen output pressure and adds 0.1Mpa for being not less than gas pipeline 14 internal operation pressure.Open boring driver 10, drill bit 11 begins rotation and advances, pipeline is holed, and polyethylene pipe 14 outer wall polyethylene materials are by constantly being cut, and halt when drill bit 11 advances to calculating gained stroke L and rotate, polyethylene pipe 14 1 sides have been bored this moment, nitrogen in the seal cavity is because pressure is bigger, and nitrogen can constantly enter in the pipeline by tapping, thereby has prevented the excessive of inner combustion gas, guarantee safety of construction, reduced construction risk.
Holing, successfully the back drill bit is gradually away from tapping, and closing control valve after withdrawing from by-pass valve control stops the nitrogen input, lays down the boring driver, extracts sealed joint pipe.Instantaneous opening utilizes behind the by-pass valve control flowing fast of interior media that the polyethylene fragment of cutting is taken out of from pipe interior, closing control valve after several seconds, the perforate of original pipeline one side this moment, and the cutting fragment is purged totally, guarantee the cleaning of pipe interior, behind the perforate end-of-job semicircle three-way piece straight length end has been carried out follow-up welding job.
The present invention can carry out the perforate operation to the pipeline of not stopping the supple of gas or steam safely and efficiently, has saved a large amount of time, and is not only convenient but also avoided unnecessary waste, can be used for the online perforate of other polyethylene material pipelines again, has very big engineering practical value.
Claims (2)
1. fuel gas polyethylene pipeline press and open holes device is characterized in that: comprise that inner surface is inlaid with semicircle three-way piece (4), polyethylene by-pass valve control (5), sealed joint pipe (7) and perforate driver (10) that the semicircle securing member (2) of heating wire, circular arc inner surface are inlaid with heating wire; Semicircle securing member (2) and semicircle three-way piece (4) circular arc side one end are fixed on the outer surface that fuel gas polyethylene pipeline (14) needs position of opening, be respectively arranged with the heating wire Wiring port on semicircle securing member (2) and the semicircle three-way piece (4), semicircle three-way piece (4) pipeline is provided with polyethylene control valve (5) and air admission hole (6), the other end of semicircle three-way piece (4) is connected with perforate driver (10) by sealed joint pipe (7), and perforate driver (10) is installed drill bit (11) towards a side of fuel gas polyethylene pipeline (14).
2. according to a kind of fuel gas polyethylene pipeline press and open holes method of the described device of claim 1, it is characterized in that: the semicircle securing member that inner surface is inlaid with heating wire, the semicircle three-way piece that the circular arc inner surface is inlaid with heating wire is fixed on the polyethylene pipe that needs perforate, to semicircle securing member, semicircle three-way piece is switched on simultaneously, the resistance wire that is embedded in semicircle inner surface has the power and the resistance of setting, resistance wire after the energising is heated to uniform temperature, thereby make semicircle securing member, the joint face fusion of semicircle three-way piece and pipeline, under high temperature and pressure effect, on the contact-making surface constantly after the polyethylene material phase counterdiffusion of fusion, carry out the nature cooling, the interface just obtains necessary weld strength like this, form pipeline and be welded to connect reliably, the air admission hole on the semicircle three-way piece feeds intensity and the sealing property that 0.6mpa nitrogen can detect welding; The other side of semicircle three-way piece is equipped with by-pass valve control, is in opening-wide state during the perforate operation, and an other end is furnished with sealed joint pipe and drill bit driver, and drill bit is worked in a sealed space, prevents that combustion gas leaks outside in the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110088107 CN102218752A (en) | 2011-04-08 | 2011-04-08 | Polyethylene gas pipeline pressure holing device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110088107 CN102218752A (en) | 2011-04-08 | 2011-04-08 | Polyethylene gas pipeline pressure holing device and method |
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| CN102218752A true CN102218752A (en) | 2011-10-19 |
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| CN 201110088107 Pending CN102218752A (en) | 2011-04-08 | 2011-04-08 | Polyethylene gas pipeline pressure holing device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818201A (en) * | 2015-01-08 | 2016-08-03 | 中国石油天然气股份有限公司 | Punching auxiliary device for steel skeleton polyethylene plastic composite pipe |
| CN106003697A (en) * | 2016-07-11 | 2016-10-12 | 钊田 | Device and method for conducting heat melting welding on PE pipe fitting and main pipe with conveying not stopped |
| CN110103283A (en) * | 2019-05-13 | 2019-08-09 | 宁波来回转自动化工业有限公司 | A kind of fluid punch |
| CN110864131A (en) * | 2019-12-28 | 2020-03-06 | 浙江新奕机械科技有限公司 | Novel valve |
| CN113102404A (en) * | 2021-04-15 | 2021-07-13 | 广东韶钢工程技术有限公司 | Pressurized clearing device for gas pipeline and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909024C1 (en) * | 1989-03-18 | 1990-07-12 | Immanuel 3203 Sarstedt De Jeschke | Boring implement for making holes in service lines |
| CN1112040A (en) * | 1994-02-23 | 1995-11-22 | 弗赖亚特克陶器及塑料工厂有限公司 | Anbohrarmatur |
| CN2287244Y (en) * | 1996-03-08 | 1998-08-05 | 焦发兆 | Electric drill on pipeline under pressure |
| CN2621099Y (en) * | 2003-05-27 | 2004-06-23 | 王兴贵 | Plastic pipeline drilling machine |
| CN201997749U (en) * | 2011-04-08 | 2011-10-05 | 王兵 | Hot tapping device for polyvinyl fuel gas pipeline |
-
2011
- 2011-04-08 CN CN 201110088107 patent/CN102218752A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909024C1 (en) * | 1989-03-18 | 1990-07-12 | Immanuel 3203 Sarstedt De Jeschke | Boring implement for making holes in service lines |
| CN1112040A (en) * | 1994-02-23 | 1995-11-22 | 弗赖亚特克陶器及塑料工厂有限公司 | Anbohrarmatur |
| CN2287244Y (en) * | 1996-03-08 | 1998-08-05 | 焦发兆 | Electric drill on pipeline under pressure |
| CN2621099Y (en) * | 2003-05-27 | 2004-06-23 | 王兴贵 | Plastic pipeline drilling machine |
| CN201997749U (en) * | 2011-04-08 | 2011-10-05 | 王兵 | Hot tapping device for polyvinyl fuel gas pipeline |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818201A (en) * | 2015-01-08 | 2016-08-03 | 中国石油天然气股份有限公司 | Punching auxiliary device for steel skeleton polyethylene plastic composite pipe |
| CN106003697A (en) * | 2016-07-11 | 2016-10-12 | 钊田 | Device and method for conducting heat melting welding on PE pipe fitting and main pipe with conveying not stopped |
| CN106003697B (en) * | 2016-07-11 | 2017-12-01 | 钊田 | A kind of PE pipe fittings and main pipeline on-line production sweating soldering device and welding method |
| CN110103283A (en) * | 2019-05-13 | 2019-08-09 | 宁波来回转自动化工业有限公司 | A kind of fluid punch |
| CN110864131A (en) * | 2019-12-28 | 2020-03-06 | 浙江新奕机械科技有限公司 | Novel valve |
| CN113102404A (en) * | 2021-04-15 | 2021-07-13 | 广东韶钢工程技术有限公司 | Pressurized clearing device for gas pipeline and use method thereof |
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Application publication date: 20111019 |