CN102589817B - Tool for detecting leakage of weld joint - Google Patents
Tool for detecting leakage of weld joint Download PDFInfo
- Publication number
- CN102589817B CN102589817B CN201210034606.8A CN201210034606A CN102589817B CN 102589817 B CN102589817 B CN 102589817B CN 201210034606 A CN201210034606 A CN 201210034606A CN 102589817 B CN102589817 B CN 102589817B
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- end cap
- plug
- detected
- piston
- bolt
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Abstract
The invention provides a tool for detecting the leakage of a weld joint. The tool can be used for carrying out sealing detection at the weld joint. The technical scheme of the invention is as follows: the tool for detecting the leakage of the weld joint comprises a plug and an end cover, wherein a connecting part for limiting the plug and the end cover from being freely separated is arranged between the plug and the end cover; the plug is arranged in a pipe cavity of a pipe fitting to be detected and forms sealed fit with the pipe wall; the end cover and a welding flange of the pipe fitting to be detected are connected and form sealed fit; the weld joint to be detected is positioned between two sealing parts; and a passage communicated with plate surfaces at the inner side and the outer side of the end plate is arranged on the plate surfaces of the end cover. According to the tool for detecting the leakage, the weld joint at the end part of a pipe body by which the pipe cavity is communicated with the outside can be quickly detected.
Description
Technical field
The present invention relates to a kind of tool for detecting leakage of weld joint.
Background technology
For tubular part, due to the specific requirement of its application place, often need to be at the parts of pipe end welding flange class, and the quality of its weld seam need to detect confirmation.Whether be the parts of a complete tube chamber for body, can have the mode of Bubble formation to judge weldquality by pipe fitting directly being inflated and is placed in water observation, this be conventional and effective mode.And some product needed is offered hole slot position on tube wall, the tube chamber of body is a connected state communicating with the external world like this, is directly just difficult to realize weld seam leak detection function by above-mentioned detection method.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of tool for detecting leakage of weld joint that can butt welded seam place carries out sealing detection.
In order to realize foregoing invention object, the technical solution adopted in the present invention is: a kind of tool for detecting leakage of weld joint, it is characterized in that: comprise that plug blocks up and end cap, described plug blocks up to arrange between end cap and limits the connecting portion that both separate arbitrarily, in the stifled tube chamber that is placed in pipe fitting to be detected of described plug, also and between tube wall form and be sealed and matched, described end cap is connected with the welding flange of pipe fitting to be detected and both formations are sealed and matched, weld seam to be measured, between two seals position, is provided with the path that is communicated with the inside and outside biside plate face of end cap on the plate face of described end cap.
According to technical scheme of the present invention: be placed in tube intracavity to be detected by stifled the plug of described leak detection tool, and make on its internal chamber wall that is closely attached to pipe fitting to be detected and form and be sealed and matched, the flange of digging of end cap and pipe fitting to be detected also fits tightly, thereby form by plug stifled, the airtight chamber that the internal chamber wall of pipe fitting to be detected and end cap form, at this moment air is passed in described airtight chamber by the path on end cap face, and above-mentioned parts are placed in to water, whether the commissure of observing welding flange on airtight chamber's shell wall has Bubble formation, judge that according to this whether welding quality is qualified.
Brief description of the drawings
Fig. 1 is that the present invention uses status architecture schematic diagram;
Fig. 2 is fitting structure schematic diagram to be detected.
Embodiment
A kind of tool for detecting leakage of weld joint, comprise plug stifled 10 and end cap 20, between described plug stifled 10 and end cap 20, arrange and limit the connecting portion 14 that both separate arbitrarily, described plug stifled 10 be placed in the tube chamber of pipe fitting to be detected and and tube wall between form and be sealed and matched, described end cap 20 is connected with the welding flange 52 of pipe fitting 50 to be detected and both formations are sealed and matched, weld seam 51 to be measured, between two seals position, is provided with the path that is communicated with end cap 20 inside and outside biside plate faces on the plate face of described end cap 20.The plug of described leak detection tool stifled 10 is placed in to pipe fitting 50 inner chambers to be detected, and make on its internal chamber wall that is closely attached to pipe fitting 50 to be detected and form and be sealed and matched, end cap 20 also fits tightly with the welding flange 52 of pipe fitting 50 to be detected, thereby form by plug stifled 10, the airtight chamber that the internal chamber wall of pipe fitting 50 to be detected and end cap 20 form, at this moment air is passed in described airtight chamber by the path on 20 of end caps, and above-mentioned parts are placed in to water, whether weld seam 51 places of observing welding flange on airtight chamber's shell wall have Bubble formation, judge that according to this whether welding quality is qualified.The plug here stifled 10 just can be realized being sealed and matched of itself and pipe fitting inner wall to be detected by O-ring seal or sealing gasket.Connecting portion 14 can be that rope or connecting portion etc. can play by fixing plug stifled 10, in case the parts of its skew.
As shown in Figure 1, 2: described obstruction 10 comprises determines plug 12 and piston 11, the edge of the described sides adjacent of determining plug 12 and piston 11 arranges protuberance and stage portion, cooperatively interact and form the ring groove that holds the first O-ring seal 13, the described governor motion of determining to be provided with between plug 12 and piston 11 both plate interplanar distances of adjusting.The first O-ring seal 13 can be selected O RunddichtringO, here the size of piston 11 and Ding Sai 12 and the inner cavity size of pipe fitting to be detected 50 roughly coincide, regulate both plate interplanar distances by governor motion, so just make piston 11 move relative to surely filling in 12, the first O-ring seal 13 of edge that when piston 11 moves, extruding is positioned at the sides adjacent of determining plug 12 and piston 11 is out of shape, and the first O-ring seal 13 of distortion closely abuts on the internal chamber wall of pipe fitting 50 to be detected and forms and be sealed and matched.The effect that described protuberance and stage portion play location and cooperatively interact determining plug 12 and piston 11, it is to be separately positioned on the relative plate face of determining plug 12 and piston 11 that protuberance can be selected arbitrarily with stage portion.Regulate surely fill in 12 and piston 11 between spacing, be exactly also the recessed wide size of pipe range direction that has regulated the groove that holds the first O-ring seal 13, thereby changed the restrained boundary of the first O-ring seal 13, and then realized reliable sealing.
On the plate face of described end cap 20, be provided with the connecting hole 22 that is communicated with end cap 20 inside and outside biside plate faces, this hole place arranges pipe adapter 21, and pipe adapter 21 is positioned on the outer panel face of end cap 20.Gas is filled in the closed cavity that pipe fitting to be detected 50 and leak detection tool form by pipe adapter 21, connecting hole 22 so that observe the commissure of pipe fitting 50 to be detected whether weld qualified.
On the plate face of the end cap 20 reclining with the welding flange 52 of pipe fitting 50 to be detected, be provided with groove and in this groove, be provided with the 3rd O-ring seal 23, the periphery position of the junction of the welding flange 52 of end cap 20 and pipe fitting to be detected 50 arranges clamping clip 30.In the time using leak detection tool, utilize clamping clip 30 that the welding flange 52 of end cap 20 and pipe fitting to be detected 50 is fitted tightly fixing, the 3rd O-ring seal 23 can further make to fit between two parts closely knit, guarantees sealing.
What form obstruction 10 determines plug 12 between piston 11 and end cap 20, surely fill in 12 and end cap 20 between connect by connecting portion 14, one end of connecting portion 14 is head of screw 141, it is connected with the threaded hole on end cap 20 interior plate faces, the other end is threaded hole, and it is connected with the screw 15 of surely filling in setting on 12.Here connecting portion 14 not only can play connection function, also played the effect of location simultaneously, surely filling in the first described sealing gasket 13 of 12 extruding when being convenient to piston 11 after being positioned and moving is out of shape, be beneficial to being like this sealed and matched of inner tubal wall of plug stifled 10 and pipe fitting 50 to be detected, also airtight chamber's structure played to the effect limiting simultaneously.When connecting portion 14 is set, should consider its moderate length, can ensure that stopping up 10 is placed in the tube chamber of pipe fitting 50 to be detected and not and fluting 53 position, is in airtight chamber region thereby guarantee to weld flange 52.
Described adjusting surely fill in 12 and piston 11 between the governor motion of spacing comprise bolt 40, the stud bolt that bolt 40 is cylindrical bar for stage casing, the inner end end face of cylindrical bar is resisted against on the plate face of determining plug 12, inner end bolt 41 is through surely filling in 12 and be connected with the threaded hole at piston 11 middle parts, outer section of cylindrical bar is inserted in the through hole that end cap 20 middle parts arrange and the second O-ring seal 24 is set between the two, outer terminal bolt 42 is connected with nut 43, and nut 43 is resisted against on the outer panel face of end cap 20.While using this instrument, by turning the nut 43 on bolt 40, piston 11 is moved relative to surely filling in 12, when piston 11 moves, extruding is positioned at the first O-ring seal 13 of the edge that determines plug 12 and piston 11 sides adjacent, that is to say by this structure and realize and surely fill in 12 and the adjusting of piston 11 both plate interplanar distances, the internal chamber wall that the first O-ring seal 13 of distortion closely abuts in pipe fitting 50 to be detected forms and is sealed and matched.In the hole of the end cap 20 passing for described bolt 40, groove is set, arranges circle second O-ring seal 24 in groove, can make like this bolt 40 in the time that end cap 20 moves, its overall tightness of the capping of end cap 20 is intact.
Hold the formation of the ring groove of the first O-ring seal 13 in conjunction with Fig. 1 explanation, that is: described protuberance 111 is made up of the outside portion of the ring groove 112 of offering on piston 11 plate faces, described stage portion 121 is made up of the outside portion of the annular lug 122 arranging on the plate face of determining plug 12, and described ring groove 112 and projection 122 form slide-and-guide and coordinate.Its further groove and projection agree with mutually, play the effect of location and guiding.Protuberance 111 and stage portion 121 just form the ring groove that holds the first O-ring seal 13, when the agreeing with of groove and projection, the area size of ring groove is regulated, to make the first O-ring seal 13 that is positioned at its inside be extruded distortion, and then realize formation sealing reliably between O-ring seal and the inwall of pipe fitting to be detected 50.
Described clamping clip 30 is U-shaped structure, after described end cap 20 and 52 laminatings of the welding flange of pipe fitting to be detected 50, be fastened in the U-shaped mouth of described clamping clip 30, described clamping clip 30 sidewalls are provided with for regulating end cap 20 and pipe fitting to be detected 50 to weld the bolt 31 of the degree of being fitted and connected between flange 52, and described bolt 31 is arranged perpendicular to the face of end cap 20.In the time using leak detection tool, utilize clamping clip 30 that the welding flange 52 of end cap 20 and pipe fitting to be detected 50 is fitted tightly fixing, turn bolt 31 and can regulate end cap 20 and pipe fitting to be detected 50 to weld degree of being fitted and connected between flange 52 to clamp or the effect of unclamping to reach.
As shown in Figure 1: the middle part of described piston 11 is provided with convex pillar part 113, this convex pillar part 113 is inserted in the hole of determining plug 12 middle parts, the interior threaded hole that arranges of described convex pillar part 113 coordinates with described inner end bolt 41, between the inner end of the cylindrical bar of the termination of convex pillar part 113 and bolt 40, leaves spacing.The middle part of piston 11 is provided with convex pillar part 113, this convex pillar part 113 is inserted in the hole of determining plug 12 middle parts, both form guiding fiting effect, described convex pillar part 113 arranges threaded hole and coordinates with inner end bolt 41, and this threaded hole is blind hole type, in the time guaranteeing to connect situation about realizing, reduce like this sealing setting, between the inner end of the cylindrical bar of the termination of convex pillar part 113 and bolt 40, leave spacing, while driving piston 11 to move with true rotating bolt 40, remain with enough displacement strokes.
Claims (6)
1. a tool for detecting leakage of weld joint, it is characterized in that: comprise obstruction (10) and end cap (20), between described obstruction (10) and end cap (20), arrange and limit the connecting portion (14) that both separate arbitrarily, described obstruction (10) be placed in the tube chamber of pipe fitting to be detected (50) and and tube wall between form and be sealed and matched, described end cap (20) is connected with the welding flange (52) of pipe fitting to be detected (50) and both formations are sealed and matched, weld seam to be measured (51) is between two seals position, on the plate face of described end cap (20), be provided with the path that is communicated with the inside and outside biside plate face of end cap (20),
Described obstruction (10) comprises determines plug (12) and piston (11), the edge of the described sides adjacent of determining plug (12) and piston (11) arranges protuberance (111) and stage portion (121), cooperatively interact and form the ring groove that holds the first O-ring seal (13), the described governor motion of determining to be provided with between plug (12) and piston (11) both plate interplanar distances of adjusting;
The plug (12) of determining that forms obstruction (10) is positioned between piston (11) and end cap (20), between fixed plug (12) and end cap (20), connect by connecting portion (14), one end of connecting portion (14) is head of screw (141), it is connected with the threaded hole on end cap (20) interior plate face, the other end is threaded hole, and it is connected with the upper screw (15) arranging of fixed plug (12);
The governor motion that spacing between (12) and piston (11) is filled in described adjusting surely comprises bolt (40), the stud bolt that bolt (40) is cylindrical bar for stage casing, the inner end end face of cylindrical bar is resisted against on the plate face of determining plug (12), inner end bolt (41) is connected through fixed plug (12) and with the threaded hole at piston (11) middle part, outer section of cylindrical bar is inserted in the through hole arranging in the middle part of end cap (20) and the second O-ring seal (24) is set between the two, outer terminal bolt (42) is connected with nut (43), nut (43) is resisted against on the outer panel face of end cap (20).
2. a kind of tool for detecting leakage of weld joint according to claim 1, it is characterized in that: on the plate face of described end cap (20), be provided with the connecting hole (22) that is communicated with the inside and outside biside plate face of end cap (20), this hole place arranges pipe adapter (21), and pipe adapter (21) is positioned on the outer panel face of end cap (20).
3. a kind of tool for detecting leakage of weld joint according to claim 1 and 2, it is characterized in that: on the plate face of the end cap (20) reclining with the welding flange (52) of pipe fitting to be detected (50), be provided with groove and in this groove, be provided with the 3rd O-ring seal (23), the periphery position of the junction of the welding flange (52) of end cap (20) and pipe fitting to be detected (50) arranges clamping clip (30).
4. a kind of tool for detecting leakage of weld joint according to claim 1, it is characterized in that: described protuberance (111) is made up of the outside portion of the ring groove (112) of offering on piston (11) plate face, described stage portion (121) is made up of the outside portion of the annular lug (122) determining to arrange on the plate face of plug (12), and described ring groove (112) and projection (122) form slide-and-guide and coordinate.
5. a kind of tool for detecting leakage of weld joint according to claim 3, it is characterized in that: described clamping clip (30) is U-shaped structure, after described end cap (20) and the laminating of the welding flange (52) of pipe fitting to be detected (50), be fastened in the U-shaped mouth of described clamping clip (30), described clamping clip (30) sidewall is provided with the bolt (31) for regulating the degree of being fitted and connected between end cap (20) and pipe fitting to be detected (50) welding flange (52), and described bolt (31) is arranged perpendicular to the face of end cap (20).
6. a kind of tool for detecting leakage of weld joint according to claim 1, it is characterized in that: the middle part of described piston (11) is provided with convex pillar part (113), this convex pillar part (113) is inserted in the hole of determining plug (12) middle part, threaded hole is set in described convex pillar part (113) and coordinates with described inner end bolt (41), between the inner end of the cylindrical bar of the termination of convex pillar part (113) and bolt (40), leave spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034606.8A CN102589817B (en) | 2012-02-16 | 2012-02-16 | Tool for detecting leakage of weld joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034606.8A CN102589817B (en) | 2012-02-16 | 2012-02-16 | Tool for detecting leakage of weld joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102589817A CN102589817A (en) | 2012-07-18 |
| CN102589817B true CN102589817B (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210034606.8A Expired - Fee Related CN102589817B (en) | 2012-02-16 | 2012-02-16 | Tool for detecting leakage of weld joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102589817B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104833460B (en) * | 2015-05-04 | 2017-03-01 | 天津博益气动股份有限公司 | Cylindrical chamber door portion air-tightness detection tool |
| CN108375456A (en) * | 2018-02-27 | 2018-08-07 | 萝北奥星新材料有限公司 | A kind of device for detecting leak point of graphite heat exchanger |
| CN108387345A (en) * | 2018-02-27 | 2018-08-10 | 萝北奥星新材料有限公司 | A kind of heat exchanger tube repair method of graphite heat exchanger |
| CN108362161A (en) * | 2018-02-27 | 2018-08-03 | 黑龙江省牡丹江农垦奥宇石墨深加工有限公司 | A kind of stay-supported graphite heat exchanger maintenance unit |
| CN110082036B (en) * | 2019-04-29 | 2021-09-21 | 平高集团有限公司 | Pipe body flange weld seam air tightness detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024079A (en) * | 1988-06-08 | 1991-06-18 | Dufort Mario C | Test plug for flanged pipes |
| CN1361862A (en) * | 1998-09-23 | 2002-07-31 | 盖伊·伯鲁贝 | Apparatus for isolating or testing a pipe segment |
| CN201872102U (en) * | 2010-09-27 | 2011-06-22 | 河南柴油机重工有限责任公司 | Rapid locking device |
| CN202066751U (en) * | 2011-01-25 | 2011-12-07 | 中国石油大学(北京) | Pressure testing device for flange weld joints |
| CN202501962U (en) * | 2012-02-16 | 2012-10-24 | 合肥市富华精密机械制造有限公司 | Leak detecting tool for welding seam |
-
2012
- 2012-02-16 CN CN201210034606.8A patent/CN102589817B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024079A (en) * | 1988-06-08 | 1991-06-18 | Dufort Mario C | Test plug for flanged pipes |
| CN1361862A (en) * | 1998-09-23 | 2002-07-31 | 盖伊·伯鲁贝 | Apparatus for isolating or testing a pipe segment |
| CN201872102U (en) * | 2010-09-27 | 2011-06-22 | 河南柴油机重工有限责任公司 | Rapid locking device |
| CN202066751U (en) * | 2011-01-25 | 2011-12-07 | 中国石油大学(北京) | Pressure testing device for flange weld joints |
| CN202501962U (en) * | 2012-02-16 | 2012-10-24 | 合肥市富华精密机械制造有限公司 | Leak detecting tool for welding seam |
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| Publication number | Publication date |
|---|---|
| CN102589817A (en) | 2012-07-18 |
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Effective date of registration: 20181017 Address after: 230601 Hefei City, Anhui province through the open area peach blossom Industrial Park prosperous road and Wan Fu Road intersection Patentee after: Hefei Hualin Jinggong Technology Co., Ltd. Address before: 230601 peach blossom Industrial Park, Hejing District, Hefei, Anhui Patentee before: Hefei Fuhua Precision Machinery Manufacturing Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20200216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |