CN103801803A - Inside weld inert gas protector - Google Patents

Inside weld inert gas protector Download PDF

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Publication number
CN103801803A
CN103801803A CN201410050721.3A CN201410050721A CN103801803A CN 103801803 A CN103801803 A CN 103801803A CN 201410050721 A CN201410050721 A CN 201410050721A CN 103801803 A CN103801803 A CN 103801803A
Authority
CN
China
Prior art keywords
inlet pipe
seal
weld
inert gas
air inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410050721.3A
Other languages
Chinese (zh)
Inventor
袁徐军
韦胜利
朱向勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI KINGWE PIPE INDUSTRY Co Ltd
Original Assignee
ANHUI KINGWE PIPE INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ANHUI KINGWE PIPE INDUSTRY Co Ltd filed Critical ANHUI KINGWE PIPE INDUSTRY Co Ltd
Priority to CN201410050721.3A priority Critical patent/CN103801803A/en
Publication of CN103801803A publication Critical patent/CN103801803A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/16Arc welding or cutting making use of shielding gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/32Accessories
    • B23K9/325Devices for supplying or evacuating shielding gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/04Tubular or hollow articles
    • B23K2101/10Pipe-lines

Abstract

The invention discloses an inside weld inert gas protector. A plurality of small holes are evenly distributed in the circumferential direction of the right end part of a gas inlet pipe, the left end of the gas inlet pipe and the right end of the gas inlet pipe are both welded with gas inlet pipe joints, a gas distribution pipe is formed by welding two different-diameter short stainless steel pipes with small holes distributed everywhere in the circumferential directions, the small holes are evenly distributed in a weld area according to a certain angle so that inert gas distributed in the weld area can be sufficient and even, the left end of the gas distribution pipe and the right end of the gas distribution pipe are sealed by welding inner sealing piece fixing plates respectively, sealing pieces and outer sealing piece fixing plates are sequentially fixed on the outer sides of the inner sealing piece fixing plates and the right end part of the gas inlet pipe sequentially penetrate through the centers of the outer sealing piece fixing plates, the centers of the sealing pieces and the centers of the inner sealing piece fixing plates to enter the inner portion of the gas distribution pipe. The inside weld inert gas protector can provide stable and even inert gas to the inner wall of the weld area in the pipeline welding process so as to protect an inner wall weld from having welding defects; the device is light, convenient to use and simple to disassemble and assemble.

Description

Inside weld inert gas shielding device
Technical field
The present invention relates to the welding technology field of pipeline, relate in particular to a kind of inside weld inert gas shielding device.
Background technology
For DN10-DN300 fluid, conveying interconnects in welding process with stainless steel welding tube and pipe fitting at present, due to welding operation spatial limitation, all adopts outside argon arc welding welding manner.This kind of pipeline welding meeting causes the defect of inner-walls of duct welded seam area: 1, weld seam is exposed in air and very easily causes wlding oxidized, and oxide layer can cause local corrosion, causes welded pipe line seepage; 2, air is very large for molten bath impact, easily occurs pore; 3, inwall weld seam easily occurs that weld seam is inhomogeneous, easily splash, produce irregular overlap, is difficult to form fine and close, high-quality welding point; 4, the small-bore pipeline internal weld seams repairing of cannot polishing; 5, serious overlap meeting contaminated-fluid medium, even may change internal diameter of the pipeline, affects fluid and carries.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, and a kind of inside weld inert gas shielding device is provided.
The present invention is achieved by the following technical solutions:
A kind of inside weld inert gas shielding device, include air inlet pipe and gas-distribution pipe, on the right end portion circumferencial direction of described air inlet pipe, be evenly equipped with multiple apertures, the left and right end of air inlet pipe is all welded with air inlet pipe joint, described gas-distribution pipe is that the reducing stainless steel short tube that is covered with aperture by two sections of circumferencial directions is welded, aperture is evenly distributed on welded seam area according to certain angle, the inert gas that can make to be distributed in welded seam area is abundant, evenly, a left side for gas-distribution pipe, right-hand member is respectively by the sealing of welding inner seal liner fixed head, be fixed with successively seal and outside seal fixed head in the outside of inner seal liner fixed head, the right end portion of described air inlet pipe is successively through outside seal fixed head, the center of seal and inner seal liner fixed head enters gas-distribution pipe inside.
Described air inlet pipe is made by DN15 stainless steel short tube.
Described seal is made up of 5mm silicane rubber plate, and external diameter is made certain angle and is beneficial to install and sealing.
Described outside seal fixed head, seal and inner seal liner fixed head are fixedly connected with by screw, can be according to the seal of different size pipeline apolegamy corresponding size.
Described air inlet pipe is apolegamy combined type extension pipe, single-piece length is 1000mm, combined type extension pipe be by multiple two ends respectively with end to end the forming of stainless steel short tube of outer silk nipple and internal thread nipple, according to field condition, select the length of air inlet pipe.
Advantage of the present invention is: the present invention is in pipeline welding process, inside weld inert gas shielding device is placed on to pipe interior, inside weld inert gas shielding device can provide stable, uniform inert gas to welding region inwall, and weld defect does not appear in protection inwall weld seam; Install light, dismounting is simple.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
As shown in Figure 1, a kind of inside weld inert gas shielding device, include air inlet pipe 1 and gas-distribution pipe 2, on the right end portion circumferencial direction of described air inlet pipe 1, be evenly equipped with multiple apertures 3, the left and right end of air inlet pipe 1 is all welded with air inlet pipe joint 4, described gas-distribution pipe 2 is that the reducing stainless steel short tube that is covered with aperture by two sections of circumferencial directions is welded, aperture is evenly distributed on welded seam area according to certain angle, the inert gas that can make to be distributed in welded seam area is abundant, evenly, a left side for gas-distribution pipe 2, right-hand member seals by welding inner seal liner fixed head 5 respectively, be fixed with successively seal 6 and outside seal fixed head 7 in the outside of inner seal liner fixed head 5, the right end portion of described air inlet pipe 1 is successively through outside seal fixed head 7, the center of seal 6 and inner seal liner fixed head 5 enters gas-distribution pipe 2 inside.
Described air inlet pipe 1 is made by DN15 stainless steel short tube.
Described seal 6 is made up of 5mm silicane rubber plate, and external diameter is made certain angle and is beneficial to install and sealing.
Described outside seal fixed head 7, seal 6 and inner seal liner fixed head 5 are fixedly connected with by screw 8, can be according to the seal of different size pipeline apolegamy corresponding size.
Described air inlet pipe 1 is apolegamy combined type extension pipe, single-piece length is 1000mm, combined type extension pipe be by multiple two ends respectively with end to end the forming of stainless steel short tube of outer silk nipple and internal thread nipple, according to field condition, select the length of air inlet pipe.

Claims (5)

1. an inside weld inert gas shielding device, it is characterized in that: include air inlet pipe and gas-distribution pipe, on the right end portion circumferencial direction of described air inlet pipe, be evenly equipped with multiple apertures, the left and right end of air inlet pipe is all welded with air inlet pipe joint, described gas-distribution pipe is that the reducing stainless steel short tube that is covered with aperture by two sections of circumferencial directions is welded, a left side for gas-distribution pipe, right-hand member is respectively by the sealing of welding inner seal liner fixed head, be fixed with successively seal and outside seal fixed head in the outside of inner seal liner fixed head, the right end portion of described air inlet pipe is successively through outside seal fixed head, the center of seal and inner seal liner fixed head enters gas-distribution pipe inside.
2. inside weld inert gas shielding device according to claim 1, is characterized in that: described air inlet pipe is made by DN15 stainless steel short tube.
3. inside weld inert gas shielding device according to claim 1, is characterized in that: described seal is made up of 5mm silicane rubber plate.
4. inside weld inert gas shielding device according to claim 1, is characterized in that: described outside seal fixed head, seal and inner seal liner fixed head are fixedly connected with by screw.
5. inside weld inert gas shielding device according to claim 1 and 2; it is characterized in that: described air inlet pipe is apolegamy combined type extension pipe; single-piece length is 1000mm, and combined type extension pipe is respectively with end to end the forming of stainless steel short tube of outer silk nipple and internal thread nipple by multiple two ends.
CN201410050721.3A 2014-02-13 2014-02-13 Inside weld inert gas protector Pending CN103801803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410050721.3A CN103801803A (en) 2014-02-13 2014-02-13 Inside weld inert gas protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410050721.3A CN103801803A (en) 2014-02-13 2014-02-13 Inside weld inert gas protector

Publications (1)

Publication Number Publication Date
CN103801803A true CN103801803A (en) 2014-05-21

Family

ID=50699446

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410050721.3A Pending CN103801803A (en) 2014-02-13 2014-02-13 Inside weld inert gas protector

Country Status (1)

Country Link
CN (1) CN103801803A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106903489A (en) * 2017-04-21 2017-06-30 杭州老板电器股份有限公司 A kind of stainless steel material welding polishing drawing process and the welder for using

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD200407A1 (en) * 1981-08-06 1983-05-04 Sigrid Bauer Device for protecting gasoline in pipe welding
JPH05154694A (en) * 1991-11-29 1993-06-22 Mitsubishi Heavy Ind Ltd Gas shielding tools for welding
CN201394704Y (en) * 2009-05-09 2010-02-03 中国石油兰州石油化工公司 Argon-filling welding protective cover
DE202009017975U1 (en) * 2009-12-21 2010-11-04 ALGÜN, Osman Sealing device for forming a protective gas chamber
CN201702498U (en) * 2010-04-20 2011-01-12 中国十七冶集团有限公司 Board-stopping device used for gas shielded welding of large-caliber pipeline and long pipeline
CN102632331A (en) * 2012-04-24 2012-08-15 中国核工业华兴建设有限公司 Argon arc welding protection drag shield of half-surrounding titanium pipeline
CN202517172U (en) * 2012-02-13 2012-11-07 上海市特种设备监督检验技术研究院 Gas protection cover for welding of zirconium and zirconium alloy pipelines
CN202846004U (en) * 2012-05-25 2013-04-03 浙江中山化工集团有限公司 Boiler stainless steel argon arc welding protector
CN203712054U (en) * 2014-02-13 2014-07-16 安徽金威管业有限公司 Inner welding seam inert gas protector

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD200407A1 (en) * 1981-08-06 1983-05-04 Sigrid Bauer Device for protecting gasoline in pipe welding
JPH05154694A (en) * 1991-11-29 1993-06-22 Mitsubishi Heavy Ind Ltd Gas shielding tools for welding
CN201394704Y (en) * 2009-05-09 2010-02-03 中国石油兰州石油化工公司 Argon-filling welding protective cover
DE202009017975U1 (en) * 2009-12-21 2010-11-04 ALGÜN, Osman Sealing device for forming a protective gas chamber
CN201702498U (en) * 2010-04-20 2011-01-12 中国十七冶集团有限公司 Board-stopping device used for gas shielded welding of large-caliber pipeline and long pipeline
CN202517172U (en) * 2012-02-13 2012-11-07 上海市特种设备监督检验技术研究院 Gas protection cover for welding of zirconium and zirconium alloy pipelines
CN102632331A (en) * 2012-04-24 2012-08-15 中国核工业华兴建设有限公司 Argon arc welding protection drag shield of half-surrounding titanium pipeline
CN202846004U (en) * 2012-05-25 2013-04-03 浙江中山化工集团有限公司 Boiler stainless steel argon arc welding protector
CN203712054U (en) * 2014-02-13 2014-07-16 安徽金威管业有限公司 Inner welding seam inert gas protector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106903489A (en) * 2017-04-21 2017-06-30 杭州老板电器股份有限公司 A kind of stainless steel material welding polishing drawing process and the welder for using

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Application publication date: 20140521