CN102589817A - Tool for detecting leakage of weld joint - Google Patents
Tool for detecting leakage of weld joint Download PDFInfo
- Publication number
- CN102589817A CN102589817A CN2012100346068A CN201210034606A CN102589817A CN 102589817 A CN102589817 A CN 102589817A CN 2012100346068 A CN2012100346068 A CN 2012100346068A CN 201210034606 A CN201210034606 A CN 201210034606A CN 102589817 A CN102589817 A CN 102589817A
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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 weld seam leak detection tool.
Background technology
For tubular part, because the specific requirement of its application place, often need be at the parts of pipe end welding flange class, and the quality of its weld seam need detect affirmation.For body is the parts of a complete tube chamber, can be through to fitting to fitting inflation and place water to observe the mode that whether have bubble to produce to judge weldquality, and this is routine and effective and efficient manner.And some product needed is offered the hole slot position on tube wall, and the tube chamber of body then is a connected state that communicates with the external world like this, directly just is difficult to realize the weld seam leak detection function with above-mentioned detection method.
Summary of the invention
But fundamental purpose of the present invention provides the weld seam leak detection tool that a kind of butt welded seam place carries out sealing detection.
In order to realize the foregoing invention purpose; The technical scheme that the present invention adopted is: a kind of weld seam leak detection tool; It is characterized in that: comprise the stifled and end cap of plug; Be provided with between the stifled and end cap of described plug and limit the connecting portion that both separate arbitrarily, described plug is stifled place in the tube chamber of pipe fitting to be detected and and tube wall between constitute and be sealed and matched, described end cap links to each other with the welding flange of pipe fitting to be detected and both formations are sealed and matched; Described weld seam to be measured is between the two seals position, and the plate face of described end cap is provided with the path that is communicated with the inside and outside biside plate face of end cap.
According to technical scheme of the present invention: place tube intracavity to be detected with the plug of said leak detection tool is stifled; And make on its internal chamber wall that closely is attached to pipe fitting to be detected and constitute and be sealed and matched; The flange of digging of end cap and pipe fitting to be detected also fits tightly; Thereby form, the internal chamber wall of to be detected pipe fitting stifled and the airtight chamber that end cap constitutes, at this moment air is fed in the described airtight chamber through the path on the end cap face, and above-mentioned parts are placed water by plug; Whether the commissure of observing welding flange on airtight chamber's shell wall has bubble to produce, and judges according to this whether welding quality is qualified.
Description of drawings
Fig. 1 is a user mode structural representation of the present invention;
Fig. 2 is a fitting structure synoptic diagram to be detected.
Embodiment
A kind of weld seam leak detection tool; Comprise plug stifled 10 and end cap 20; Be provided with between described plug stifled 10 and the end cap 20 and limit the connecting portion 14 that both separate arbitrarily; Described plug stifled 10 place in the tube chamber of pipe fitting to be detected and and tube wall between constitute and be sealed and matched; Described end cap 20 links to each other with the welding flange 52 of pipe fitting 50 to be detected and both formations are sealed and matched, and described weld seam 51 to be measured is between the two seals position, and the plate face of described end cap 20 is provided with the path that is communicated with end cap 20 inside and outside biside plate faces.The plug stifled 10 of said leak detection tool is placed pipe fitting 50 inner chambers to be detected; And make on its internal chamber wall that closely is attached to pipe fitting 50 to be detected and constitute 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, the internal chamber wall of to be detected pipe fitting 50 stifled 10 and the airtight chamber that end cap 20 constitutes, at this moment air is fed in the described airtight chamber through the path on 20 of the end caps, and above-mentioned parts are placed water by plug; Whether weld seam 51 places of observing welding flange on airtight chamber's shell wall have bubble to produce, and judge 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 through O-ring seal or sealing gasket.It is fixing that connecting portion 14 can be that rope or connecting portion etc. can play plug stifled 10, in case the parts of its skew.
Like Fig. 1, shown in 2: described obstruction 10 comprises decides plug 12 and piston 11; Describedly fill in 12 surely and with the edge of the sides adjacent of piston 11 protuberance be set and cooperatively interact with stage portion and constitute the ring groove that holds first O-ring seal 13, described fill in surely 12 and piston 11 between be provided with the governor motion of both plate interplanar distances of adjusting.First O-ring seal 13 can be selected the O RunddichtringO; Here the inner cavity size of the size of piston 11 and Ding Sai 12 and pipe fitting to be detected 50 roughly coincide; Regulate both plate interplanar distances through governor motion; So just make piston 11 move relative to filling in 12 surely, extruding was positioned at first O-ring seal, 13 distortion of the edge of the sides adjacent of deciding plug 12 and piston 11 when piston 11 moved, and first O-ring seal 13 of distortion closely abuts in to form on the internal chamber wall of pipe fitting 50 to be detected and is sealed and matched.Described protuberance and stage portion play location and the effect that cooperatively interacts to filling in 12 surely with piston 11, and it is to be separately positioned on the relative plate face of deciding plug 12 and piston 11 that protuberance and stage portion can be selected arbitrarily.Regulate fill in surely 12 and piston 11 between spacing, also be exactly the recessed wide size of pipe range direction of having regulated the groove that holds first O-ring seal 13, thereby changed the restrained boundary of first O-ring seal 13, and then realized reliable sealing.
The plate face of described end cap 20 is provided with the connecting hole 22 that is communicated with end cap 20 inside and outside biside plate faces, and this place, hole is provided with 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 through pipe adapter 21, connecting hole 22 so that observe the commissure of pipe fitting 50 to be detected whether weld qualified.
The plate face of the end cap 20 that reclines with the welding flange 52 of pipe fitting 50 to be detected is provided with groove and in this groove, is provided with second O-ring seal 23, and the peripheral position of the junction of the welding flange 52 of end cap 20 and pipe fitting 50 to be detected is provided with clamping clip 30.When using leak detection tool, it is fixing to utilize clamping clip 30 that the welding flange 52 of end cap 20 and pipe fitting to be detected 50 is fitted tightly, and second O-ring seal 23 can further make fits closely knitly between two parts, guarantee sealing.
What constitute obstruction 10 decides plug 12 between piston 11 and end cap 20; Surely fill in 12 and end cap 20 between connect through connecting portion 14; One end of connecting portion 14 be head of screw 141 its be connected with threaded hole on the end cap 20 interior plate faces, the other end be threaded hole its with fill in the screw 15 that is provided with on 12 surely and be connected.Here connecting portion 14 not only can play the connection effect; Also played the effect of location simultaneously; Surely fill in 12 and be convenient to push when piston 11 moves 13 distortion of described first sealing gasket after being positioned; Be beneficial to being sealed and matched of inner tubal wall of plug stifled 10 and pipe fitting 50 to be detected like this, also airtight chamber's structure played the effect that limits simultaneously.Its moderate length of considered when connecting portion 14 is set can ensure that stopping up 10 places the tube chamber of pipe fitting 50 to be detected and do not reach the position of fluting 53, is in the airtight chamber zone thereby guarantee to weld flange 52.
Described adjusting fill in surely 12 and piston 11 between the governor motion of spacing comprise bolt 40; Bolt 40 is the stud bolt of cylindrical bar for the stage casing; The inner end end face of cylindrical bar is resisted against on the plate face of deciding plug 12, and inner end bolt 41 passes to be decided plug 12 and be connected with the threaded hole at piston 11 middle parts, and outer section of cylindrical bar is inserted in the through hole that end cap 20 middle parts are provided with and the 3rd 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.When using this instrument; Through turning the nut 43 on the bolt 40; Make piston 11 move relative to filling in 12 surely; Extruding was positioned at first O-ring seal 13 of the edge that decides plug 12 and piston 11 sides adjacent when piston 11 moved, that is to say through this structure realize filling in surely 12 with the adjusting of piston 11 both plate interplanar distances, the internal chamber wall that first O-ring seal 13 of distortion closely abuts in pipe fitting 50 to be detected constitutes and is sealed and matched.Supply in the hole of the end cap 20 that described bolt 40 passes groove to be set, in groove, arrange a circle the 3rd O-ring seal 24, like this can be so that bolt 40 is when end cap 20 move, its overall tightness of the capping of end cap 20 is intact.
The formation of holding the ring groove of 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 of on piston 11 plate faces, offering 112; Described stage portion 121 is by constituting in the outside portion of filling in the annular lug 122 that is provided with on 12 the plate face surely, and described ring groove 112 constitutes slide-and-guides with projection 122 and cooperates.Its further groove and projection agree with each other, play the effect of location and guiding.Protuberance 111 just constitutes the ring groove that holds first O-ring seal 13 with stage portion 121; In the time of the agreeing with of groove and projection the area size of ring groove is regulated; Be extruded distortion so that be positioned at its first inner O-ring seal 13, and then constitute sealing reliably between the inwall of realization O-ring seal and pipe fitting to be detected 50.
Described clamping clip 30 is U type structure; After fitting, the welding flange 52 of described end cap 20 and pipe fitting to be detected 50 is fastened in the U type mouth of said clamping clip 30; Described clamping clip 30 sidewalls are provided with the bolt 31 that is used to regulate the degree of being fitted and connected between end cap 20 and the pipe fitting to be detected 50 welding flange 52, and described bolt 31 is arranged perpendicular to the face of end cap 20.Promptly when using leak detection tool; It is fixing to utilize clamping clip 30 that the welding flange 52 of end cap 20 and pipe fitting to be detected 50 is fitted tightly, and turns the degree of being fitted and connected that bolt 31 can regulate between end cap 20 and the pipe fitting to be detected 50 welding flange 52 and clamps 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 deciding plug 12 middle parts; Threaded hole is set in the described convex pillar part 113 cooperates, leave spacing between the inner end of the cylindrical bar of the termination of convex pillar part 113 and bolt 40 with described inner end bolt 41.The middle part of piston 11 is provided with convex pillar part 113; This convex pillar part 113 is inserted in the hole of deciding plug 12 middle parts, and both constitute the guiding fiting effect, and described convex pillar part 113 is provided with threaded hole and cooperates with inner end bolt 41; And this threaded hole is the blind hole type; When guaranteeing to connect the situation of realization, reduce sealing setting like this, leave spacing between the inner end of the cylindrical bar of the termination of convex pillar part 113 and bolt 40, remain with enough displacement strokes when moving with true rotating bolt 40 drive pistons 11.
Claims (9)
1. weld seam leak detection tool; It is characterized in that: comprise obstruction (10) and end cap (20); Be provided with between described obstruction (10) and the end cap (20) and limit the connecting portion (14) that both separate arbitrarily; Described obstruction (10) place in the tube chamber of pipe fitting to be detected (50) and and tube wall between constitute and be sealed and matched; Described end cap (20) links to each other with the welding flange (52) of pipe fitting to be detected (50) and both formations are sealed and matched, and described weld seam to be measured (51) is between the two seals position, and the plate face of described end cap (20) is provided with the path that is communicated with the inside and outside biside plate face of end cap (20).
2. a kind of weld seam leak detection tool according to claim 1; It is characterized in that: described obstruction (10) comprises decides plug (12) and piston (11); The edge of the sides adjacent of described fixed plug (12) and piston (11) is provided with protuberance (111) and cooperatively interacts to constitute with stage portion (121) and hold the ring groove of first O-ring seal (13), the described fixed governor motion that is provided with both plate interplanar distances of adjusting between (12) and the piston (11) of filling in.
3. a kind of weld seam leak detection tool according to claim 1; It is characterized in that: the plate face of described end cap (20) is provided with the connecting hole (22) that is communicated with the inside and outside biside plate face of end cap (20); This place, hole is provided with pipe adapter (21), and pipe adapter (21) is positioned on the outer panel face of end cap (20).
4. according to claim 1 or 3 described a kind of weld seam leak detection tools; It is characterized in that: the plate face of the end cap (20) that reclines with the welding flange (52) of pipe fitting to be detected (50) is provided with groove and in this groove, is provided with second O-ring seal (23), and the peripheral position of the junction of the welding flange (52) of end cap (20) and pipe fitting to be detected (50) is provided with clamping clip (30).
5. a kind of weld seam leak detection tool according to claim 2; It is characterized in that: constitute the plug (12) of deciding that stops up (10) and be positioned between piston (11) and the end cap (20); Connect through connecting portion (14) between fixed plug (12) and the end cap (20); One end of connecting portion (14) be head of screw (141) its be connected with threaded hole on end cap (20) the interior plate face, the other end be threaded hole its go up the screw (15) that is provided with fixed plug (12) and be connected.
6. a kind of weld seam leak detection tool according to claim 2; It is characterized in that: the governor motion that spacing between (12) and the piston (11) is filled in described adjusting surely comprises bolt (40); Bolt (40) is the stud bolt of cylindrical bar for the stage casing; The inner end end face of cylindrical bar is resisted against on the plate face of deciding plug (12), and inner end bolt (41) passes to be decided plug (12) and is connected with the threaded hole at piston (11) middle part, and outer section of cylindrical bar is inserted in the through hole of end cap (20) middle part setting and the 3rd 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).
7. a kind of weld seam leak detection tool according to claim 2; It is characterized in that: described protuberance (111) is made up of the outside portion of the ring groove of on piston (11) plate face, offering (112); Described stage portion (121) is made up of the outside portion of the annular lug (122) that on the plate face of fixed plug (12), is provided with, and described ring groove (112) and projection (122) constitute slide-and-guide and cooperate.
8. a kind of weld seam leak detection tool according to claim 4; It is characterized in that: described clamping clip (30) is U type structure; The welding flange (52) of described end cap (20) and pipe fitting to be detected (50) is fastened in the U type mouth of said clamping clip (30) after fitting; Described clamping clip (30) sidewall is provided with the bolt (31) that is used to regulate the degree of being fitted and connected between end cap (20) and pipe fitting to be detected (50) the welding flange (52), and described bolt (31) is arranged perpendicular to the face of end cap (20).
9. a kind of weld seam leak detection tool according to claim 6; 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 deciding plug (12) middle part; Threaded hole is set in the described convex pillar part (113) cooperates, leave spacing between the inner end of the cylindrical bar of the termination of convex pillar part (113) and bolt (40) with described inner end bolt (41).
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 true CN102589817A (en) | 2012-07-18 |
| CN102589817B 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833460A (en) * | 2015-05-04 | 2015-08-12 | 天津博益气动股份有限公司 | Cylindrical container door air tightness detection tool |
| 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 |
| 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 |
| CN110082036A (en) * | 2019-04-29 | 2019-08-02 | 平高集团有限公司 | Tube body seam flange 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833460A (en) * | 2015-05-04 | 2015-08-12 | 天津博益气动股份有限公司 | Cylindrical container door air tightness detection tool |
| 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 |
| 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 |
| CN110082036A (en) * | 2019-04-29 | 2019-08-02 | 平高集团有限公司 | Tube body seam flange air-tightness detection device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102589817B (en) | 2014-08-06 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20200216 |