CN103471780A - System and method for detecting welding seam of end cover of sealed container - Google Patents

System and method for detecting welding seam of end cover of sealed container Download PDF

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Publication number
CN103471780A
CN103471780A CN2013103789151A CN201310378915A CN103471780A CN 103471780 A CN103471780 A CN 103471780A CN 2013103789151 A CN2013103789151 A CN 2013103789151A CN 201310378915 A CN201310378915 A CN 201310378915A CN 103471780 A CN103471780 A CN 103471780A
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China
Prior art keywords
cylinder
end cap
airtight container
container end
helium
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CN2013103789151A
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Chinese (zh)
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CN103471780B (en
Inventor
龚崇兴
叶青
项重光
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NINGBO MINGXIN CHEMICAL MACHINERY CO Ltd
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NINGBO MINGXIN CHEMICAL MACHINERY CO Ltd
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Publication of CN103471780A publication Critical patent/CN103471780A/en
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Abstract

The invention provides a system for detecting the welding seam of an end cover of a sealed container, which comprises a fixing device, a vacuumizing device, a testing device and a detecting device, wherein the fixing device is used for fixing; the vacuumizing device is used for vacuumizing; the testing device is used for releasing gas; the detecting device is used for detecting whether the welding seam of the end cover of the sealed container is qualified; while detecting is implemented, the end cover of the sealed container is fixed on the fixing device at first and then is vacuumized through the vacuumizing device; helium is released by starting the testing device; and finally, whether the welding seam is qualified is detected by using the detecting device. According to the system and the method for detecting the welding seam of the end cover of the sealed container disclosed by the invention, the structure is simple, and the manufacture and installation can be carried out automatically; the operation is simple and convenient, and specialized people is not needed, so that production cost is lowered; pollution does not exist, so that operators and the environment can not be harmed; detection period is short and is generally within 5min; the production efficiency is greatly improved; the detection precision is high.

Description

Airtight container end cap weld inspection system and detection method
Technical field
The present invention relates to a kind of weld inspection system and method, particularly a kind of airtight container end cap weld inspection system and detection method.
Background technology
Pressure sealing container belongs to special equipment, and it has strict safety standard, in manufacturing process, needs butt welded seam to carry out strict detection, and prevent that weld seam is defective and cause product defective, thus the potential safety hazard of staying; Traditional weld seam detection has nondestructive examination, the hydraulic testing or gas pressure test, but those detection method complicated operations, sense cycle is long, needs the professional to be operated, pollute the environment and there is certain danger, can't the weld seam of airtight container end cap be detected simultaneously.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention is to provide a kind of simple in structure, and handling safety, convenience are pollution-free, airtight container end cap weld inspection system and detection method that sense cycle is short, precision is high.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of airtight container end cap weld inspection system, comprise stationary installation, vacuum extractor, proving installation and pick-up unit; Described stationary installation comprises support 3, be fixed with sidewall on described support 3 and offer the round bearing cylinder 5 of bleeding point, the upper surface of described round bearing cylinder 5 is provided with O-ring seal, vertically be provided with cylinder or hydraulic cylinder directly over described round bearing cylinder 5, be fixed with the pressing plate 11 that lower surface is established rubber blanket on the output shaft of described cylinder or hydraulic cylinder; Described vacuum extractor comprises tank body 7, reaches the vacuum air pump 10 be connected with described tank body 7, the sidewall of described tank body 7 is provided with at least two draft tube 71, described draft tube 71 is provided with the first switch valve 72, the bleeding point of described round bearing cylinder 5 is connected with described draft tube 71 by flexible pipe, and described tank body 7 is provided with pressure vacuum meter 8; Described pick-up unit comprises helium mass spectrometer leak detector 9, and described helium mass spectrometer leak detector 9 is connected with described tank body 7; Described proving installation comprises the helium tank 1 that is positioned at described stationary installation one side, on described helium tank 1, by flexible pipe, is connected with spray gun 2.
Further, described pick-up unit also includes pipeline 12, and described draft tube 71 is by the described pipeline 12 of pipeline connection, and described pipeline is provided with second switch valve 73, and described helium mass spectrometer leak detector 9 is communicated with described pipeline 12.
Use the detection method of above-mentioned airtight container end cap weld inspection system, it comprises the following steps,
A, the top and bottom of airtight container end cap 6 are cleaned, remove large granular impurity or welding slag;
B, drive described cylinder or hydraulic cylinder, make described pressing plate lifting;
C, described airtight container end cap 6 is positioned on described round bearing cylinder 5, adjusts position, prevent from;
D, drive described cylinder or hydraulic cylinder, described pressing plate 11 is descended and be depressed into described airtight container end cap 6 upper ends;
E, open described the first switch valve 72, start described vacuum air pump 10 simultaneously, suction is to being more than or equal to 1 * 10 -4pa and be less than or equal to 10 * 10 -4close described vacuum air pump 10 after Pa;
F, open the switch on described helium tank 1, the weld seams that described spray gun 2 is aimed in described airtight container end cap 6 continue jet;
G, observe the reading on described helium mass spectrometer leak detector 9, judge that whether weld seam is qualified;
H, drive described cylinder or hydraulic cylinder, make described pressing plate lifting, described airtight container end cap 6 is taken out.
Further, between step e and step f, be provided with step I, described step I is for closing described the first switch valve 72.
Further, in described step e, suction to 2 * 10 -4pa.
(3) beneficial effect
Airtight container end cap weld inspection system of the present invention and detection method, simple in structure, can carry out voluntarily fabrication and installation; Simple to operation, without the professional, reduced production cost; Pollution-free, can not work the mischief to operating personnel and environment; Sense cycle is short, and general sense cycle, in 5 minutes, has improved production efficiency greatly; Accuracy of detection is high.
The accompanying drawing explanation
The structural representation that Fig. 1 is airtight container end cap weld inspection system of the present invention;
Fig. 2 is airtight container end cap weld seam detection process flow diagram of the present invention.
Embodiment
Consult Fig. 1, the invention provides a kind of airtight container end cap weld inspection system, comprise stationary installation, vacuum extractor, proving installation and pick-up unit; Stationary installation comprises support 3, be fixed with sidewall and offer the round bearing cylinder 5 of bleeding point on support 3, upper surface at round bearing cylinder 5 is provided with O-ring seal, vertically be provided with cylinder or hydraulic cylinder directly over round bearing cylinder 5, be fixed with the pressing plate 11 that lower surface is established rubber blanket on the output shaft of cylinder or hydraulic cylinder; Vacuum extractor comprises tank body 7, reaches the vacuum air pump 10 be connected with this tank body 7, sidewall at tank body 7 is provided with at least two draft tube 71, be provided with the first switch valve 72 on draft tube 71, the bleeding point of round bearing cylinder 5 is connected with draft tube 71 by flexible pipe, and tank body 7 is provided with pressure vacuum meter 8; Pick-up unit comprises helium mass spectrometer leak detector 9, and helium mass spectrometer leak detector 9 is connected with tank body 7; Proving installation comprises the helium tank 1 that is positioned at stationary installation one side, on helium tank 1, by flexible pipe, is connected with spray gun 2; Further, pick-up unit also includes pipeline 12, and draft tube 71 is by pipeline connection pipeline 12, and pipeline is provided with second switch valve 73, and helium mass spectrometer leak detector 9 is communicated with pipeline 12.
Consult Fig. 2, use the detection method of above-mentioned airtight container end cap weld inspection system, it comprises the following steps,
A, the top and bottom of airtight container end cap 6 are cleaned, remove large granular impurity or welding slag, prevent that bulky grain or welding slag from making sealing surface gas leakage, affects testing result;
B, driving cylinder or hydraulic cylinder, make described pressing plate lifting, is convenient to lay airtight container end cap 6;
C, airtight container end cap 6 is positioned on round bearing cylinder 5, adjusts position, prevent from and affect testing result;
D, drive cylinder or hydraulic cylinder, pressing plate 11 is descended and be depressed into airtight container end cap 6 upper ends, make itself and isolated from atmosphere;
E, open the first switch valve 72, start vacuum air pump 10 simultaneously, suction is to being more than or equal to 1 * 10 -4pa and be less than or equal to 10 * 10 -4close vacuum air pump 10 after Pa, in the present embodiment, suction to 2 * 10 -4pa;
F, open the switch on helium tank 1, spray gun 2 is aimed to weld seams in airtight container end caps 6 and continue jetly, it continues jet along bead direction, the raising accuracy of detection;
Reading on g, observation helium mass spectrometer leak detector 9, judge that whether weld seam is qualified; As defective as weld seam, helium is inhaled into tank body under suction function, makes helium mass spectrometer leak detector 9 produce reading; As weld is accepted, helium can't penetrate weld seam, makes helium mass spectrometer leak detector 9 non-meterings;
H, driving cylinder or hydraulic cylinder, make described pressing plate lifting, and airtight container end cap 6 is taken out, and completes detection.
Reduce accuracy of detection in order to prevent that helium from entering in tank body, be provided with step I between step e and step f, this step I is for closing the first switch valve 72.
Airtight container end cap weld inspection system of the present invention and detection method, simple in structure, can carry out voluntarily fabrication and installation; Simple to operation, without the professional, reduced production cost; Pollution-free, can not work the mischief to operating personnel and environment; Sense cycle is short, and general sense cycle, in 5 minutes, has improved production efficiency greatly; Accuracy of detection is high
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (5)

1. an airtight container end cap weld inspection system, is characterized in that: comprise stationary installation, vacuum extractor, proving installation and pick-up unit;
Described stationary installation comprises support (3), be fixed with sidewall on described support (3) and offer the round bearing cylinder (5) of bleeding point, the upper surface of described round bearing cylinder (5) is provided with O-ring seal, vertically be provided with cylinder or hydraulic cylinder directly over described round bearing cylinder (5), be fixed with lower surface on the output shaft of described cylinder or hydraulic cylinder and establish the pressing plate of rubber blanket (11);
Described vacuum extractor comprises tank body (7), reaches the vacuum air pump (10) be connected with described tank body (7), the sidewall of described tank body (7) is provided with at least two draft tube (71), described draft tube (71) is provided with the first switch valve (72), the bleeding point of described round bearing cylinder (5) is connected with described draft tube (71) by flexible pipe, and described tank body (7) is provided with pressure vacuum meter (8);
Described pick-up unit comprises helium mass spectrometer leak detector (9), and described helium mass spectrometer leak detector (9) is connected with described tank body (7);
Described proving installation comprises the helium tank (1) that is positioned at described stationary installation one side, and described helium tank (1) is upper is connected with spray gun (2) by flexible pipe.
2. airtight container end cap weld inspection system as claimed in claim 1, it is characterized in that: described pick-up unit also includes pipeline (12), described draft tube (71) is by the described pipeline of pipeline connection (12), described pipeline is provided with second switch valve (73), and described helium mass spectrometer leak detector (9) is communicated with described pipeline (12).
3. an airtight container end cap weld inspection method, is characterized in that, comprises the following steps:
A, the top and bottom of airtight container end cap (6) are cleaned, remove large granular impurity or welding slag;
B, drive described cylinder or hydraulic cylinder, make described pressing plate lifting;
C, that described airtight container end cap (6) is positioned over to described round bearing cylinder (5) is upper, adjusts position, prevents from;
D, drive described cylinder or hydraulic cylinder, described pressing plate (11) is descended and be depressed into described airtight container end cap (6) upper end;
E, open described the first switch valve (72), start described vacuum air pump (10) simultaneously, suction is to being more than or equal to 1 * 10 -4pa and be less than or equal to 10 * 10 -4close described vacuum air pump 10 after Pa;
F, open the switch on described helium tank (1), the weld seam that described spray gun (2) is aimed in described airtight container end cap (6) continues jet;
G, observe the reading on described helium mass spectrometer leak detector (9), judge that whether weld seam is qualified;
H, drive described cylinder or hydraulic cylinder, make described pressing plate lifting, described airtight container end cap (6) is taken out.
4. detection method as claimed in claim 3, it is characterized in that: be provided with step I between step e and step f, described step I is for closing described the first switch valve (72).
5. detection method as claimed in claim 3 is characterized in that: in described step e, and suction to 2 * 10 -4pa.
CN201310378915.1A 2013-08-27 2013-08-27 Airtight container end cap weld inspection system and detection method Active CN103471780B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105334006A (en) * 2014-08-14 2016-02-17 丹阳市利旺车辆部件有限公司 Leak detecting device used for LNG vehicle-mounted gas cylinder gas-liquid seal assembly
CN105910771A (en) * 2016-05-30 2016-08-31 华电电力科学研究院 Helium vacuum leak checking device
CN105953986A (en) * 2016-07-25 2016-09-21 合肥力翔电池科技有限责任公司 Product air tightness detection device with automatic discharging function
CN106248313A (en) * 2016-07-25 2016-12-21 合肥力翔电池科技有限责任公司 A kind of products air tightness detection device
CN110174224A (en) * 2019-04-23 2019-08-27 中国科学院合肥物质科学研究院 Multi-layer compound structure conductor outer layer stainless steel weld joint helium mass spectrum back pressure leak detection method
CN110398420A (en) * 2019-08-19 2019-11-01 艾尔希庆华(西安)汽车有限公司 A kind of quick-fried reinspection test method of gas generator liquid
CN111964846A (en) * 2020-09-28 2020-11-20 郑州斯倍思机电有限公司 By using CO2System for detecting tightness of workpiece
CN112289469A (en) * 2020-11-03 2021-01-29 浙江伦特机电有限公司 Leakage testing device

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JPS63163133A (en) * 1986-12-24 1988-07-06 Tokin Corp Method for inspecting vacuum leakage
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CN101625278A (en) * 2009-08-10 2010-01-13 西部金属材料股份有限公司 Heat condition pressure test method of titanium-steel composite board reactor welding seam
CN201464134U (en) * 2009-03-16 2010-05-12 浙江上能锅炉有限公司 Vacuum leak detection device of vacuum hot-water boiler
CN102313627A (en) * 2011-05-04 2012-01-11 友达光电股份有限公司 Weld bead leak-detecting cladding ring, system and method thereof

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JPS63163133A (en) * 1986-12-24 1988-07-06 Tokin Corp Method for inspecting vacuum leakage
JP2008096308A (en) * 2006-10-12 2008-04-24 Mitsubishi Electric Corp Leak test apparatus
CN201464134U (en) * 2009-03-16 2010-05-12 浙江上能锅炉有限公司 Vacuum leak detection device of vacuum hot-water boiler
CN101625278A (en) * 2009-08-10 2010-01-13 西部金属材料股份有限公司 Heat condition pressure test method of titanium-steel composite board reactor welding seam
CN102313627A (en) * 2011-05-04 2012-01-11 友达光电股份有限公司 Weld bead leak-detecting cladding ring, system and method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105334006A (en) * 2014-08-14 2016-02-17 丹阳市利旺车辆部件有限公司 Leak detecting device used for LNG vehicle-mounted gas cylinder gas-liquid seal assembly
CN105334006B (en) * 2014-08-14 2018-05-04 丹阳市利旺车辆部件有限公司 A kind of leakage detection apparatus for LNG mounted gas cylinder gas-liquid sealing components
CN105910771A (en) * 2016-05-30 2016-08-31 华电电力科学研究院 Helium vacuum leak checking device
CN105953986A (en) * 2016-07-25 2016-09-21 合肥力翔电池科技有限责任公司 Product air tightness detection device with automatic discharging function
CN106248313A (en) * 2016-07-25 2016-12-21 合肥力翔电池科技有限责任公司 A kind of products air tightness detection device
CN110174224A (en) * 2019-04-23 2019-08-27 中国科学院合肥物质科学研究院 Multi-layer compound structure conductor outer layer stainless steel weld joint helium mass spectrum back pressure leak detection method
CN110174224B (en) * 2019-04-23 2021-06-29 中国科学院合肥物质科学研究院 Helium mass spectrum backpressure leak detection method for stainless steel welding seam on outer layer of conductor with multilayer composite structure
CN110398420A (en) * 2019-08-19 2019-11-01 艾尔希庆华(西安)汽车有限公司 A kind of quick-fried reinspection test method of gas generator liquid
CN111964846A (en) * 2020-09-28 2020-11-20 郑州斯倍思机电有限公司 By using CO2System for detecting tightness of workpiece
CN112289469A (en) * 2020-11-03 2021-01-29 浙江伦特机电有限公司 Leakage testing device

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Inventor after: Wang Yiliang

Inventor after: Gong Chongxing

Inventor after: Ye Qing

Inventor after: Xiang Zhongguang

Inventor before: Gong Chongxing

Inventor before: Ye Qing

Inventor before: Xiang Zhongguang

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