CN104075855A - Pipe joint leakage detector - Google Patents

Pipe joint leakage detector Download PDF

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Publication number
CN104075855A
CN104075855A CN201410353271.5A CN201410353271A CN104075855A CN 104075855 A CN104075855 A CN 104075855A CN 201410353271 A CN201410353271 A CN 201410353271A CN 104075855 A CN104075855 A CN 104075855A
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CN
China
Prior art keywords
pad
pipe adapter
pressing plate
joint flange
surge tank
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.)
Granted
Application number
CN201410353271.5A
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Chinese (zh)
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CN104075855B (en
Inventor
袁敏哲
张�成
孙万仓
叶建林
宋品玲
王娅辉
周艳华
吴金平
宋飞飞
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.)
XIAN UNITE CONTAINER MANUFACTURING Co Ltd
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XIAN UNITE CONTAINER MANUFACTURING Co Ltd
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Priority to CN201410353271.5A priority Critical patent/CN104075855B/en
Publication of CN104075855A publication Critical patent/CN104075855A/en
Application granted granted Critical
Publication of CN104075855B publication Critical patent/CN104075855B/en
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Abstract

The invention discloses a pipe joint leakage detector which comprises a helium tank, a stop valve, a buffer tank, a collecting gas bag and a helium mass spectrometer leak detector, wherein an outlet of the helium tank is connected with one end of the stop valve, and the other end of the stop valve is connected with an inlet of the buffer tank; a pressure meter is connected onto the buffer tank; a pipe joint connecting mechanism is arranged at the top of the buffer tank and comprises a connecting flange, a pressing plate, a first gasket and a second gasket; the connecting flange is fixed at the top of the buffer tank; the pressing plate is arranged above the connecting flange; the second gasket is arranged on the lower end surface of the pressing plate; the first gasket is arranged on the upper end surface of the connecting flange; a pipe joint is arranged between the first gasket and the second gasket; through holes are formed in centers of the connecting flange and the first gasket; the pressing plate is fixedly connected with the connecting flange through fastening pieces; the collecting gas bag is arranged outside the possible leaking part of the pipe joint in a sleeving manner; and a suction gun of the helium mass spectrometer leak detector is communicated with the collecting gas bag. The pipe joint leakage detector can detect leakage of the pipe joint and has high detection sensitivity, accuracy and efficiency.

Description

A kind of pipe adapter leak detection apparatus
Technical field
The invention belongs to leak detection technical field, be specifically related to a kind of pipe adapter leak detection apparatus.
Background technology
Pipe adapter is as a kind of crossover sub, be widely used in the industries such as oil, chemical industry, boats and ships, space flight, military project, machinery, building, medicine, main pattern has: hydraulic flexible pipe joint, ferrule-type compression joint, socket-welding fitting, blast composite tube joint, screw connected pipe adapter etc.In some use occasion, very high to the sealing property requirement of position between two pipes of formation pipe adapter (being pipe adapter possibility leak site), do not allow any leakage.At present, the major way that detector tube joint is revealed is the method for leaking hunting in water, and in water, the method for leaking hunting is that pipe adapter two ends are sealed, in pipe adapter, be filled with pressurized air, pipe adapter may leak site be placed in water, adopt visualization bubbling situation, carry out detector tube joint and whether have leakage.In the time that pipe adapter exists trace to reveal, this mode is inapplicable, and cannot determine leakage rate.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of pipe adapter leak detection apparatus is provided, it is simple in structure, reasonable in design and use easy to operate, solve the problem that cannot detect the pipe adapter that exists trace to reveal in prior art, detection sensitivity is high, accuracy of detection is high, and detection efficiency is high.
For achieving the above object, the technical solution used in the present invention is: a kind of pipe adapter leak detection apparatus, it is characterized in that: comprise helium tank, stop valve, surge tank, collect air bag and helium mass spectrometer leak detector, the outlet of described helium tank is connected with one end of stop valve, the other end of described stop valve is connected with the import of surge tank, on described surge tank, be connected with tensimeter, the top of described surge tank is provided with the pipe adapter bindiny mechanism for connecting pipe joint, described pipe adapter bindiny mechanism comprises joint flange, pressing plate, the first pad and the second pad, described joint flange sealing is fixed on the top of surge tank, described pressing plate is arranged on the top of joint flange, described the second pad is arranged on the lower surface of pressing plate, described the first pad is arranged on the upper surface of joint flange, described pipe adapter is arranged between the first pad and the second pad, the center of described joint flange and the first pad all has through hole and two through hole communicates, described through hole communicates with the inside of pipe adapter, described pressing plate is fixedly connected with and is pressed on joint flange on the second pad by securing member, described collection Air sac cover outside the possible leak site of pipe adapter and and pipe adapter between mutually sealing, the suction gun of described helium mass spectrometer leak detector and the internal communication of collecting air bag.
Above-mentioned a kind of pipe adapter leak detection apparatus, is characterized in that: between the sidewall and joint flange of described the first pad, be provided with vacuum cement between the lower end, outside of pipe adapter and the first pad and between the outer upper end of pipe adapter and the second pad.
Above-mentioned a kind of pipe adapter leak detection apparatus, is characterized in that: described securing member is bolt, and the screw rod of described bolt passes successively from the bottom to top joint flange and pressing plate and end and is provided with nut, and described nut abuts against on the upper surface of pressing plate.
Above-mentioned a kind of pipe adapter leak detection apparatus, is characterized in that: the connected mode of described joint flange and surge tank is welding.
Above-mentioned a kind of pipe adapter leak detection apparatus, is characterized in that: described the first pad and the second pad are silica gel pad.
The present invention compared with prior art has the following advantages:
1, the present invention is simple in structure, reasonable in design and use easy to operate.
2, the present invention is applicable to the detection of pipe adapter under different leakage rate requirements, and accuracy of detection is high.
3, in testing process of the present invention, pipe adapter two ends contact with the second pad with the first pad respectively, between pipe adapter and the first pad and the second pad, are flexible contact, can pipe adapter two ends not caused wearing and tearing, be scratched; When dismounting, bolt, nut are separated, vacuum cement is removed, and just can obtain the pipe adapter after detecting, convenient disassembly.
4, in the present invention, pipe adapter adopts pipe adapter bindiny mechanism to be fixedly connected on the top of surge tank, does not need welding, machine work, has shortened detection time, has improved detection efficiency.
5, the invention solves the problem that the pipe adapter to existing trace to reveal cannot detect, adopt helium mass spectrometer leak detector to carry out the leakage of detector tube joint, detection sensitivity is high.
Below by drawings and Examples, the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is use constitutional diagram of the present invention.
Fig. 2 is that the installation of joint flange of the present invention, pressing plate, the first pad, the second pad, collection air bag and pipe adapter is related to schematic diagram.
Description of reference numerals:
1-helium tank; 2-stop valve; 3-surge tank;
4-helium mass spectrometer leak detector; 5-joint flange; 6-securing member;
The 7-the first pad; 8-pipe adapter; 9-collection air bag;
The 10-the second pad; 11-pressing plate; 12-tensimeter;
13-through hole; 14-vacuum cement; 15-nut.
Embodiment
As depicted in figs. 1 and 2, the present invention includes helium tank 1, stop valve 2, surge tank 3, collect air bag 9 and helium mass spectrometer leak detector 4, the outlet of described helium tank 1 is connected with one end of stop valve 2, the other end of described stop valve 2 is connected with the import of surge tank 3, on described surge tank 3, be connected with tensimeter 12, the top of described surge tank 3 is provided with the pipe adapter bindiny mechanism for connecting pipe joint 8, described pipe adapter bindiny mechanism comprises joint flange 5, pressing plate 11, the first pad 7 and the second pad 10, described joint flange 5 sealings are fixed on the top of surge tank 3, described pressing plate 11 is arranged on the top of joint flange 5, described the second pad 10 is arranged on the lower surface of pressing plate 11, described the first pad 7 is arranged on the upper surface of joint flange 5, described pipe adapter 8 is arranged between the first pad 7 and the second pad 10, the center of described joint flange 5 and the first pad 7 all has through hole 13 and two through hole 13 communicates, described through hole 13 communicates with the inside of pipe adapter 8, described pressing plate 11 is fixedly connected with and is pressed on the second pad 10 by securing member 6 and joint flange 5, described collection air bag 9 be enclosed within the possible leak site of pipe adapter 8 outer and and pipe adapter 8 between sealing mutually, the suction gun of described helium mass spectrometer leak detector 4 and the internal communication of collecting air bag 9.
As depicted in figs. 1 and 2, between the sidewall of described the first pad 7 and joint flange 5, be provided with vacuum cement 14 between the lower end, outside of pipe adapter 8 and the first pad 7 and between the outer upper end of pipe adapter 8 and the second pad 10, reveal with the trace that prevents helium, guarantee sealing.
As depicted in figs. 1 and 2, described securing member 6 is bolt, and the screw rod of described bolt passes successively from the bottom to top joint flange 5 and pressing plate 11 and end and is provided with nut 15, and described nut 15 abuts against on the upper surface of pressing plate 11; Adopt screw bolt and nut to coordinate joint flange 5 is fixedly connected with pressing plate 11, easy to connect, fixing reliable, and can make pressing plate 11 be pressed on the second pad 10, prevent that in testing process, helium is revealed.
In the present embodiment, described joint flange 5 is welding with the connected mode of surge tank 3, and connected mode is simple, and sealing is fixing reliable.
In the present embodiment, described the first pad 7 and the second pad 10 are silica gel pad, and elasticity and the hardness of silica gel pad are moderate, if the pad of selecting is too soft, distortion is too large, cannot recover, and cannot recycle; If the pad of selecting is too hard, pad is not yielding, can cause the leakage of helium.
Secondly testing process of the present invention is: first pipe adapter to be detected 8 is fixedly connected on to the top of surge tank 3 by pipe adapter bindiny mechanism, by collecting air bag 9, to be enclosed within possible the leak site of pipe adapter 8 outer and make to collect between air bag 9 and pipe adapter 8 and seal mutually; Bonding pressure table 12 on surge tank 3 again, connects stop valve 2 in the import of surge tank 3, and the other end of stop valve 2 is connected with the outlet of helium tank 1.After connecting, open stop valve 2, the helium in helium tank 1 is filled with in surge tank 3, helium in surge tank 3 enters in pipe adapter 8 successively after the center through hole 13 of joint flange 5 and the first pad 7, observe tensimeter 12, after the pressure in surge tank 3 reaches testing requirement pressure, close stop valve 2, and pressurize 10 minutes.Open helium mass spectrometer leak detector 4, require to set the detection slip of helium mass spectrometer leak detector 4 according to pipe adapter accuracy of detection, by the suction gun of helium mass spectrometer leak detector 4 and the internal communication of collecting air bag 9.In the time that pipe adapter 8 has leakage, helium enters helium mass spectrometer leak detector 4 by suction gun, and helium mass spectrometer leak detector 4 sends chimes of doom, just can determine that the leakage rate of pipe adapter 8 has exceeded the slip of setting requirement, pipe adapter exists and leaks, and the leakage rate of this pipe adapter can not meet the request for utilization of pipe adapter; As helium mass spectrometer leak detector 4 does not send chimes of doom, illustrate that the leakage rate of pipe adapter 8 does not exceed the slip of setting requirement, the leakage rate of this pipe adapter can meet the request for utilization of pipe adapter.Pipe adapter 8 is fixedly connected on the top of surge tank 3 by pipe adapter bindiny mechanism, concrete operating process is: the top that joint flange 5 is welded on to surge tank 3, then the first pad 7 and pipe adapter 8 are placed on joint flange 5 successively, the second pad 10 and pressing plate 11 are placed on successively to the outer upper end of pipe adapter 8, by securing member 6, pressing plate 11 and joint flange 5 are fixed together again, by nut 15, pressing plate 11 are pressed on the second pad 10; Finally between the sidewall and joint flange 5 of the first pad 7, use vacuum cement 14 to seal between the lower end, outside of pipe adapter 8 and the first pad 7 and between the outer upper end of pipe adapter 8 and the second pad 10, reveal with the trace that prevents helium, guarantee sealing.In the present invention, stop valve 2 is for the detected pressures of regulating and controlling surge tank 3 interior helium, and tensimeter 12 is for the detected pressures of display buffer tank 3 interior helium, and the possible leak site of pipe adapter 8 is isolated itself and outside air by collecting air bag 9.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure transformation of above embodiment being done according to the technology of the present invention essence, all still belongs in the protection domain of technical solution of the present invention.

Claims (5)

1. a pipe adapter leak detection apparatus, it is characterized in that: comprise helium tank (1), stop valve (2), surge tank (3), collect air bag (9) and helium mass spectrometer leak detector (4), the outlet of described helium tank (1) is connected with one end of stop valve (2), the other end of described stop valve (2) is connected with the import of surge tank (3), on described surge tank (3), be connected with tensimeter (12), the top of described surge tank (3) is provided with the pipe adapter bindiny mechanism for connecting pipe joint (8), described pipe adapter bindiny mechanism comprises joint flange (5), pressing plate (11), the first pad (7) and the second pad (10), described joint flange (5) sealing is fixed on the top of surge tank (3), described pressing plate (11) is arranged on the top of joint flange (5), described the second pad (10) is arranged on the lower surface of pressing plate (11), described the first pad (7) is arranged on the upper surface of joint flange (5), described pipe adapter (8) is arranged between the first pad (7) and the second pad (10), the center of described joint flange (5) and the first pad (7) all has through hole (13) and two through hole (13) communicates, described through hole (13) communicates with the inside of pipe adapter (8), described pressing plate (11) is fixedly connected with and is pressed on the second pad (10) by securing member (6) and joint flange (5), described collection air bag (9) be enclosed within the possible leak site of pipe adapter (8) outer and and pipe adapter (8) between sealing mutually, the suction gun of described helium mass spectrometer leak detector (4) and the internal communication of collecting air bag (9).
2. according to a kind of pipe adapter leak detection apparatus claimed in claim 1, it is characterized in that: between the sidewall of described the first pad (7) and joint flange (5), be provided with vacuum cement (14) between the lower end, outside of pipe adapter (8) and the first pad (7) and between the outer upper end of pipe adapter (8) and the second pad (10).
3. according to a kind of pipe adapter leak detection apparatus claimed in claim 1, it is characterized in that: described securing member (6) is bolt, the screw rod of described bolt passes successively from the bottom to top joint flange (5) and pressing plate (11) and end and is provided with nut (15), and described nut (15) abuts against on the upper surface of pressing plate (11).
4. according to a kind of pipe adapter leak detection apparatus claimed in claim 1, it is characterized in that: described joint flange (5) is welding with the connected mode of surge tank (3).
5. according to a kind of pipe adapter leak detection apparatus claimed in claim 1, it is characterized in that: described the first pad (7) and the second pad (10) are silica gel pad.
CN201410353271.5A 2014-07-23 2014-07-23 A kind of pipe adapter leak detection apparatus Active CN104075855B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410353271.5A CN104075855B (en) 2014-07-23 2014-07-23 A kind of pipe adapter leak detection apparatus

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Application Number Priority Date Filing Date Title
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CN104075855B CN104075855B (en) 2016-04-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110967151A (en) * 2018-09-29 2020-04-07 台山市旺春达环保科技有限公司 Filter element assembly detection device
CN111882831A (en) * 2020-07-09 2020-11-03 芜湖中燃城市燃气发展有限公司 Natural gas leakage alarm device and method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778613A (en) * 1970-04-17 1973-12-11 Elf Union Pipe-line leak detection method and device
US5094480A (en) * 1989-11-29 1992-03-10 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A." Pipe coupling with leakage draining means
CN1229916A (en) * 1999-02-08 1999-09-29 于志谦 Dual-fuel automotive high pressure duct leakage detecting device
CN101105263A (en) * 2006-07-14 2008-01-16 固特异轮胎和橡胶公司 Flexible leak detection system and method for double carcass hose
CN201464133U (en) * 2009-07-27 2010-05-12 中国石油天然气集团公司 Sleeve pipe and oil pipe joint leakage rate infrared radiation detection apparatus for test
CN201779381U (en) * 2010-02-10 2011-03-30 航天晨光股份有限公司 Gas delivering stainless steel corrugated hose joint component with leakage detection function
CN102086972A (en) * 2010-11-17 2011-06-08 广州精测管线技术有限公司 Method for detecting leaking point position of buried pipeline by gas
CN203422195U (en) * 2013-08-24 2014-02-05 西安优耐特容器制造有限公司 Online leak detection system for composite board device
CN204008030U (en) * 2014-07-23 2014-12-10 西安优耐特容器制造有限公司 A kind of pipe adapter leak detection apparatus

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778613A (en) * 1970-04-17 1973-12-11 Elf Union Pipe-line leak detection method and device
US5094480A (en) * 1989-11-29 1992-03-10 Societe Nationale D'etude Et De Construction De Moteurs D'aviation "S.N.E.C.M.A." Pipe coupling with leakage draining means
CN1229916A (en) * 1999-02-08 1999-09-29 于志谦 Dual-fuel automotive high pressure duct leakage detecting device
CN101105263A (en) * 2006-07-14 2008-01-16 固特异轮胎和橡胶公司 Flexible leak detection system and method for double carcass hose
CN201464133U (en) * 2009-07-27 2010-05-12 中国石油天然气集团公司 Sleeve pipe and oil pipe joint leakage rate infrared radiation detection apparatus for test
CN201779381U (en) * 2010-02-10 2011-03-30 航天晨光股份有限公司 Gas delivering stainless steel corrugated hose joint component with leakage detection function
CN102086972A (en) * 2010-11-17 2011-06-08 广州精测管线技术有限公司 Method for detecting leaking point position of buried pipeline by gas
CN203422195U (en) * 2013-08-24 2014-02-05 西安优耐特容器制造有限公司 Online leak detection system for composite board device
CN204008030U (en) * 2014-07-23 2014-12-10 西安优耐特容器制造有限公司 A kind of pipe adapter leak detection apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110967151A (en) * 2018-09-29 2020-04-07 台山市旺春达环保科技有限公司 Filter element assembly detection device
CN111882831A (en) * 2020-07-09 2020-11-03 芜湖中燃城市燃气发展有限公司 Natural gas leakage alarm device and method

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