CN105300609A - Multi-point support welding line fast detection process for various kinds of electronic tubes - Google Patents

Multi-point support welding line fast detection process for various kinds of electronic tubes Download PDF

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Publication number
CN105300609A
CN105300609A CN201510738825.8A CN201510738825A CN105300609A CN 105300609 A CN105300609 A CN 105300609A CN 201510738825 A CN201510738825 A CN 201510738825A CN 105300609 A CN105300609 A CN 105300609A
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China
Prior art keywords
pipe fitting
alcohol
detecting platform
vacuum
weld seam
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Pending
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CN201510738825.8A
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Chinese (zh)
Inventor
骆红霞
卢雪梅
罗微
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Chengdu Guoguang Electric Co Ltd
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Chengdu Guoguang Electric Co Ltd
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Priority to CN201510738825.8A priority Critical patent/CN105300609A/en
Publication of CN105300609A publication Critical patent/CN105300609A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a multi-point support welding line fast detection process for various kinds of electronic tubes, comprising a vacuum detection table; a support plate is provided with a flexible bag which is filled with a liquid medium; the vacuum detection table is provided with an alcohol storage box which is provided with a syringe and three pigment tubes for storing organic pigment; a high pressure gas storage tank is also included; and the high pressure gas storage tank is connected to a cone-shaped nozzle through a flexible tube. A horizontal pressure plate is arranged on the side of a rectangle frame body of the invention; the rectangle frame body is provided with a fastening bolt; and the clamping or pressing the tube can be switched through rotation of the rectangle frame body. The multi-point support welding line fast detection device is applicable to the tubes with various specifications, and the horizontal pressure plate is provided with a layer of a silicone rubber sheet as a buffer structure, which not only protects the tubes, but also improves the sealing.

Description

The weld seam of one kind of multiple electron-like pipe fitting multi-point support detects operation fast
Technical field
The present invention relates to the inspection field of electronics pipe fitting, the weld seam being specifically related to one kind of multiple electron-like pipe fitting multi-point support detects operation fast.
Background technology
In welded structure is produced, the weldquality obtained due to current used solder technology not yet reaches enough stability, thus for ensureing the quality of weld assembly, quality inspection must be carried out by butt welded seam, guaranteeing that weld seam meets the technical requirement of defined and the safe handling of structure.The inspection of weld seam divides nondestructive test and the large class of destructive test two.Usually aborning weld seam verify as nondestructive test, as visual test, compactness inspection etc.
The visual test of weld seam has two contents.
One, Weld Profiles inspection: Weld Profiles inspection adopts survey instrument butt welded seam physical dimension to detect, it comprises every shaping indexs such as checking the flatness of the flatness of the width of weld seam, height and weld seam, welding ripple and whether reaches technical requirement; Face of weld quality inspection: face of weld quality inspection is with visual or check with 5 ~ 10 times of magnifier butt welded seam surfaces, observes face of weld and whether there is the weld defects such as undercut, overlap, lack of penetration, arc crater and surface pores, slag inclusion, crackle.
Two, the densification inspection of weld seam: the container of various storage liquid or gas and pressure vessel, as the component such as boiler, pipeline, the compactness of butt welded seam has certain technical requirement.For guaranteeing the security of operation of component, must carry out seal (tightness)test by butt welded seam, the conventional weld seam compactness method of inspection has the hydraulic testing, gas pressure test or kerosine test etc. three kinds:
1 hydraulic testing: the hydraulic testing is applicable to check the compactness of weld seam and intensity, and its test method has two kinds: a kind of is seal (tightness)test for open containers, to fill container with water at ambient pressure or part is poured water, not additonal pressure, the compactness of inspection weld seam; Another kind is filled by container with water, and on closed container, institute is porose, improves make a strength test with the hydraulic pressure in pump handle container, usual test pressure be working pressure doubly, and continue for some time at this pressure, then Pressure Drop to the working pressure of container, carry out densification test.With hand hammer apart from commissure, knock gently along bead direction, if find, weld seam has water droplet or thin water wave to occur, then illustrate that weld seam is not fine and close.
2 gas pressure tests: gas pressure test passes in closed container by pressurized air, smears suds at face of weld, when weld seam has penetrability defect, the gas in container will be overflowed from these defects, and suds are bubbled, and is defect place herein.The test of a kind of ammonia is also had in gas pressure test, this test method is in closed container, pass into the gas containing 10% ammonia, a mercuric nitrate solution test paper slightly wider than weld seam is sticked in container outer wall commissure, if there is leakage in container welding somewhere, then in this place's test paper, mercuric nitrate solution and ammonia generation chemical reaction present black splotch, have penetrability defect to show this place.Gas pressure test is generally used for some pipes or the inspection of small-sized pressure-vessel.
3 kerosine tests: kerosine test is coated with in the one side of weld seam to spread whiting aqueous solution, kerosene is coated with at the another side of weld seam, if there is the defects such as trickle crackle or penetrable pores in weld seam, kerosene can form obvious oil mark in infiltrate gap on whiting, thus determines weld defect Wei Ge.During test, in order to correctly determine that the size of defect is with Wei Ge, should observe immediately after painting kerosene, when there is oil mark, defect area will be marked in time, otherwise expand along with the prolongation oil mark of time, cause error in judgement to strengthen.If do not find oil mark point yet through 5min, then weld seam compactness is qualified.Kerosine test is used for the seal (tightness)test of non-pressure vessel.With the development of experimental technique, special bleeding agent and developer can also be used now to carry out seal (tightness)test, bring great convenience to test operation.
Current detection device and method are not all suitable for the detection of electronics pipe fitting, and therefore the weld seam detection of electronics pipe fitting still adopts prior art to detect, and cause time length, inefficient problem.
Summary of the invention
The object of the present invention is to provide the weld seam of one kind of multiple electron-like pipe fitting multi-point support to detect operation fast, solve the problem not being applicable to electronics pipe fitting welding quality inspection at present.
Of the present inventionly to be achieved through the following technical solutions:
The weld seam of one kind of multiple electron-like pipe fitting multi-point support detects operation fast, comprise a vacuum detecting platform, vacuum detecting platform is connected with a check-out console face by closing telescopic mouth, check-out console face is provided with an aspirating hole be communicated with the inner vacuum of vacuum detecting platform, also comprise a counter weight base, counter weight base is provided with a support bar, support bar is provided with a fixed body that can move up and down along support bar, fixed body is provided with a Top Crossbeam and a lower cross arm, Top Crossbeam is provided with an orienting lug, orienting lug is provided with gathering sill, lower cross arm is connected with a clamping device, a movable base is configured with at described vacuum detecting platform, movable base is provided with column, column is provided with a supporting disk that can move up and down along column by lock pin, described supporting disk is provided with a flexible pouch, liquid medium is filled with in this pouch, described clamping device comprises a rectangular box, rectangular box is connected on lower cross arm by a rotating shaft, rectangular box is provided with a fastening bolt, is provided with one block of flat clamp in the side of described rectangular box, be covered with one deck silicone rubber plate at flat clamp list note, described vacuum detecting platform is also provided with an alcohol storage box, alcohol storage box is configured with the pigment tube of a syringe and three storage organic pigments, also comprise a high-pressure gas storage tank, high-pressure gas storage tank is connected with a conical nozzle by flexible pipe.In use, be first arranged on by electronics pipe fitting to be measured and detect on panel, its one end is communicated with aspirating hole, and the other end of pipe fitting is sealed by a rubber cushion blocks pick-up unit of the present invention, lower cross arm is fixed pipe fitting, Top Crossbeam guides pipe fitting, support, a movable base is configured with at vacuum detecting platform, movable base is provided with column, column is provided with a supporting disk that can move up and down along column by lock pin, the middle part of bending pipe fitting is placed on supporting disk, as the 3rd strong point of bending pipe fitting, the bending pipe fitting of any character structure can be made all can to realize the detection of weld seam, the flexible pouch inside arranged is filled with liquid medium, when pipe fitting is placed in flexible pouch, it is naturally downward under gravity, liquid medium drives pouch to be wrapped by pipe fitting, and play a supporting role, decrease rigid fixing, available protecting electronics pipe fitting, electronics pipe fitting is through after rectangular box, by can fastening clamp be carried out through bolt, rectangular box is arranged on lower cross arm by rotating shaft, go for various bending, the detection of non-linear pipeline, for highly less workpiece, the flat clamp that rectangular box side can be utilized to arrange is fixed, after rectangular box is overturn, flat clamp is made to act on rubber gasket, rubber gasket is tightly fitted in the port of pipe fitting, ensure its sealing property, silicone rubber plate is as buffer structure, not only pipe fitting can be protected, and sealing property can be made to improve, then according to the color of the material of pipe fitting detected own, select the pigment tube of different colours, part pigment is wherein loaded syringe, then the alcohol in syringe extraction alcohol case is utilized, coloured alcohol is formed after concussion mixing, and be injected at the sealed end of pipe fitting, make sealed end all cover by alcohol, then vacuum detecting platform carries out vacuum drawn, owing to there is the difference of color between coloured alcohol and the material of pipe fitting own, be convenient to the lost situation of observing alcohol, if the alcohol narrow eyes into a slit of sealed end has obviously, disappear fast, prove good seal, if there is alcohol quick disappearance, this illustrates sealing existing defects, thus carry out the adjustment of sealed end, avoid because mistake appears in the sealing property of sealed end, the pipe fitting caused detects and occurs mistake, namely avoid in defective pipe fitting and occur owing to sealing the defective wrong conclusion caused, utilize the effumability of alcohol simultaneously, after detection, volatilization that can be very fast, tube surface can't be remained in, if adopt grease to seal, cleaning process repeatedly can be there is, and the volatility of alcohol determines and does not need to clean, appoint the clean of right holding workpiece surface, be configured with a movable base at vacuum detecting platform, movable base is provided with column, column is provided with a supporting disk that can move up and down along column by lock pin, then vacuum detecting platform carries out vacuum drawn, the end of pipe fitting has rubber cushion blocks to seal, its inside is communicated with the vacuum of vacuum detecting platform, then scanning weld seam, gas leakage is then that weld seam is defective, and air tight is then weld is accepted, so, weld seam detection can be carried out to multiple electronics pipe fitting, be specially adapted to the test of electronics pipe fitting, there is the characteristics and advantages that speed is fast, reproducible, reliability is high, after detection, by the valve on press-started flexible pipe, high-pressure gas storage tank is by the ejection at a high speed of flexible pipe, conical nozzle, the alcohol rapid evaporation applied by surface of the work is removed, thus fast pipe fitting is reduced, and clean out, substantially reduce the cleaning work in later stage, greatly improve detection speed.
Described fixed body is arranged on support bar by tightening knob.By the setting of tightening knob, the height of fixed body can be changed, thus be applicable to the electronics pipe fitting of different length.
Described check-out console face is provided with one deck rubber blanket.By arranging rubber blanket on check-out console face, the end face of electronics pipe fitting can be made to form sealing, avoiding because the bad weld seam fault erroneous judgement caused of port sealing.
The present invention compared with prior art, has following advantage and beneficial effect:
The weld seam of one kind of multiple electron-like pipe fitting multi-point support of 1 the present invention detects operation fast, then according to the color of the material of pipe fitting detected own, select the pigment tube of different colours, part pigment is wherein loaded syringe, then the alcohol in syringe extraction alcohol case is utilized, coloured alcohol is formed after concussion mixing, and be injected at the sealed end of pipe fitting, make sealed end all cover by alcohol, then vacuum detecting platform carries out vacuum drawn, owing to there is the difference of color between coloured alcohol and the material of pipe fitting own, be convenient to the lost situation of observing alcohol, if the alcohol narrow eyes into a slit of sealed end has obviously, disappear fast, prove good seal, if there is alcohol quick disappearance, this illustrates sealing existing defects, thus carry out the adjustment of sealed end, avoid because mistake appears in the sealing property of sealed end, the pipe fitting caused detects and occurs mistake, namely avoid in defective pipe fitting and occur owing to sealing the defective wrong conclusion caused, utilize the effumability of alcohol simultaneously, after detection, volatilization that can be very fast, tube surface can't be remained in, if adopt grease to seal, cleaning process repeatedly can be there is, and the volatility of alcohol determines and does not need to clean, appoint the clean of right holding workpiece surface, be configured with a movable base at vacuum detecting platform, movable base is provided with column, column is provided with a supporting disk that can move up and down along column by lock pin,
The weld seam of one kind of multiple electron-like pipe fitting multi-point support of 2 the present invention detects operation fast, and be first arranged on by electronics pipe fitting to be measured and detect on panel, its one end is communicated with aspirating hole, and the other end of pipe fitting is sealed by a rubber cushion blocks; Lower cross arm is fixed pipe fitting, Top Crossbeam guides pipe fitting, support, and then vacuum detecting platform carries out vacuum drawn, and the end of pipe fitting has rubber cushion blocks to seal, its inside is communicated with the vacuum of vacuum detecting platform, then scanning weld seam, gas leakage is then that weld seam is defective, and air tight is then weld is accepted, so, weld seam detection can be carried out to multiple electronics pipe fitting, be specially adapted to the test of electronics pipe fitting, there is the characteristics and advantages that speed is fast, reproducible, reliability is high; The middle part of bending pipe fitting is placed on supporting disk, as the 3rd strong point of bending pipe fitting, the bending pipe fitting of any character structure can be made all can to realize the detection of weld seam, greatly expanded the sensing range of electronics pipe fitting;
The weld seam of one kind of multiple electron-like pipe fitting multi-point support of 3 the present invention detects operation fast, by arranging rubber blanket on check-out console face, the end face of electronics pipe fitting can be made to form sealing, avoids because the bad weld seam fault erroneous judgement caused of port sealing.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention.
Mark and corresponding parts title in accompanying drawing:
1-vacuum detecting platform, 2-closes telescopic mouth, 3-check-out console face, 4-aspirating hole, 5-counter weight base, 6-support bar, 7-fixed body, 8-Top Crossbeam, 9-lower cross arm, 10-orienting lug, 11-rectangular box, 12-rotating shaft, 13-fastening bolt, 14-tightening knob, 15-rubber blanket, 16-movable base, 17-column, 18-supporting disk, 19-lock pin, 20-pouch, 21-flat clamp, 22-silicone rubber plate, 23-alcohol storage box, 24-syringe, 25-pigment tube, 26-high-pressure gas storage tank, 27-conical nozzle.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment
As shown in Figure 1, the weld seam of one kind of multiple electron-like pipe fitting multi-point support detects operation fast, comprise a vacuum detecting platform 1, vacuum detecting platform 1 is connected with a check-out console face 3 by closing telescopic mouth 2, check-out console face 3 is provided with one deck rubber blanket 15, rubber blanket 15 and check-out console face 3 are provided with an aspirating hole 4 be communicated with the inner vacuum of vacuum detecting platform 1, also comprise a counter weight base 5, counter weight base 5 is provided with a support bar 6, support bar 6 is provided with a fixed body 7 that can move up and down along support bar 6, and fixed body 7 is arranged on support bar 6 by tightening knob 14, fixed body 7 is provided with a Top Crossbeam 8 and a lower cross arm 9, Top Crossbeam 8 is provided with an orienting lug 10, orienting lug 10 is provided with gathering sill, lower cross arm 9 is connected with a clamping device: comprise a rectangular box 11, a flat clamp 21 is provided with in the side of rectangular box 11, flat clamp 21 has certain thickness, heavier, flat clamp 21 is provided with one deck silicone rubber plate 22 as buffer structure, not only pipe fitting can be protected, and sealing property can be made to improve, rectangular box 11 is connected on lower cross arm 9 by a rotating shaft 12, rectangular box 11 is provided with a fastening bolt 13, by rotating rectangular box 11, the clamping to pipe fitting or compression can be switched to, be applicable to the pipe fitting of different size, a movable base 16 is configured with at vacuum detecting platform 1, movable base 16 is provided with column 17, column 17 is provided with a supporting disk 18 that can move up and down along column 17 by lock pin 19, the middle part of bending pipe fitting is placed on supporting disk 18, as the 3rd strong point of bending pipe fitting, the bending pipe fitting of any character structure can be made all can to realize the detection of weld seam, flexible pouch 20 inside be arranged on supporting disk 18 is filled with liquid medium, when pipe fitting is placed in flexible pouch 20, it is naturally downward under gravity, liquid medium drives pouch to be wrapped by pipe fitting, and play a supporting role, decrease rigid fixing, available protecting electronics pipe fitting, vacuum detecting platform 1 is also provided with an alcohol storage box 23, alcohol storage box 23 is configured with the pigment tube 25 of a syringe 24 and red, yellow, the blue three kinds of organic pigments of difference splendid attire, first electronics pipe fitting to be measured is arranged on and detects on panel 3, its one end is communicated with aspirating hole 4, and the other end of pipe fitting is sealed by a rubber cushion blocks, lower cross arm 9 pairs of pipe fittings are fixed, Top Crossbeam 8 pairs of pipe fittings guide, support, then according to the color of the material of pipe fitting detected own, select the pigment tube 25 of different colours, part pigment is wherein loaded syringe 24, then syringe 24 is utilized to extract alcohol in alcohol case 23, coloured alcohol is formed after concussion mixing, and be injected at the sealed end of pipe fitting, make sealed end all cover by alcohol, then vacuum detecting platform carries out vacuum drawn, owing to there is the difference of color between coloured alcohol and the material of pipe fitting own, be convenient to the lost situation of observing alcohol, if the alcohol narrow eyes into a slit of sealed end has obviously, disappear fast, prove good seal, if there is alcohol quick disappearance, this illustrates sealing existing defects, thus carry out the adjustment of sealed end, also comprise a high-pressure gas storage tank 26, high-pressure gas storage tank 26 is connected with a conical nozzle 27 by flexible pipe, after detection, by the valve on press-started flexible pipe, high-pressure gas storage tank is by the ejection at a high speed of flexible pipe, conical nozzle, and the alcohol rapid evaporation applied by surface of the work is removed, thus fast pipe fitting is reduced, and clean out, substantially reduce the cleaning work in later stage, greatly improve detection speed.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1. the weld seam of one kind of multiple electron-like pipe fitting multi-point support detects operation fast, it is characterized in that: comprise a vacuum detecting platform (1), vacuum detecting platform (1) is connected with a check-out console face (3) by closed telescopic mouth (2), check-out console face (3) are provided with an aspirating hole (4) be communicated with the inner vacuum of vacuum detecting platform (1), also comprise a counter weight base (5), counter weight base (5) is provided with a support bar (6), support bar (6) is provided with a fixed body (7) that can move up and down along support bar (6), fixed body (7) is provided with a Top Crossbeam (8) and a lower cross arm (9), Top Crossbeam (8) is provided with an orienting lug (10), orienting lug (10) is provided with gathering sill, lower cross arm (9) is connected with a clamping device, a movable base (16) is configured with described vacuum detecting platform (1), movable base (16) is provided with column (17), column (17) is provided with a supporting disk (18) that can move up and down along column (17) by lock pin (19), described supporting disk (18) is provided with a flexible pouch (20), in this pouch (20), is filled with liquid medium, described clamping device comprises a rectangular box (11), and rectangular box (11) is connected on lower cross arm (9) by a rotating shaft (12), and rectangular box (11) is provided with a fastening bolt (13), be provided with one piece of flat clamp (21) in the side of described rectangular box (11), be covered with one deck silicone rubber plate (22) at flat clamp (21) single note, described vacuum detecting platform (1) is also provided with an alcohol storage box (23), alcohol storage box (23) is configured with the pigment tube (25) of a syringe (24) and three storage organic pigments, also comprise a high-pressure gas storage tank (26), high-pressure gas storage tank (26) is connected with a conical nozzle (27) by flexible pipe, first be arranged on by electronics pipe fitting to be measured and detect on panel, its one end is communicated with aspirating hole, and the other end of pipe fitting is sealed by a rubber cushion blocks, lower cross arm is fixed pipe fitting, Top Crossbeam guides pipe fitting, support, a movable base is configured with at vacuum detecting platform, movable base is provided with column, column is provided with a supporting disk that can move up and down along column by lock pin, the middle part of bending pipe fitting is placed on supporting disk, as the 3rd strong point of bending pipe fitting, when pipe fitting is placed in flexible pouch, it is naturally downward under gravity, liquid medium drives pouch to be wrapped by pipe fitting, electronics pipe fitting is through after rectangular box, by can fastening clamp be carried out through bolt, rectangular box is arranged on lower cross arm by rotating shaft, rubber gasket is tightly fitted in the port of pipe fitting, ensure its sealing property, silicone rubber plate is as buffer structure, then according to the color of the material of pipe fitting detected own, select the pigment tube of different colours, part pigment is wherein loaded syringe, then the alcohol in syringe extraction alcohol case is utilized, coloured alcohol is formed after concussion mixing, and be injected at the sealed end of pipe fitting, make sealed end all cover by alcohol, then vacuum detecting platform carries out vacuum drawn, owing to there is the difference of color between coloured alcohol and the material of pipe fitting own, be convenient to the lost situation of observing alcohol, if the alcohol narrow eyes into a slit of sealed end has obviously, disappear fast, prove good seal, if there is alcohol quick disappearance, this illustrates sealing existing defects, thus carry out the adjustment of sealed end, then vacuum detecting platform carries out vacuum drawn, the end of pipe fitting has rubber cushion blocks to seal, its inside is communicated with the vacuum of vacuum detecting platform, then scanning weld seam, gas leakage is then that weld seam is defective, air tight is then weld is accepted, after detection, by the valve on press-started flexible pipe, high-pressure gas storage tank is by the ejection at a high speed of flexible pipe, conical nozzle, and the alcohol rapid evaporation applied by surface of the work is removed.
2. the weld seam of one kind of multiple electron-like pipe fitting multi-point support according to claim 1 detects operation fast, it is characterized in that: described fixed body (7) is arranged on support bar (6) by tightening knob (14).
3. the weld seam of one kind of multiple electron-like pipe fitting multi-point support according to claim 1 and 2 detects operation fast, it is characterized in that: on described check-out console face (3), be provided with one deck rubber blanket (15).
CN201510738825.8A 2015-11-04 2015-11-04 Multi-point support welding line fast detection process for various kinds of electronic tubes Pending CN105300609A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4415430A1 (en) * 1994-05-02 1995-11-09 Wuerschinger Gmbh & Co Baubetr Leak testing appts. for tubular formed test part, esp. concrete pipe, shaft
EP0889310A3 (en) * 1997-06-30 1999-03-24 Samsung Electronics Co., Ltd. An apparatus for testing a join between two metallic members
CN201122119Y (en) * 2007-12-04 2008-09-24 上海电气电站设备有限公司 Evacuation leakage test device
CN203400741U (en) * 2013-08-13 2014-01-22 海宁胜晖化学工业有限公司 Test tube fixing support of magnetic stirrer
CN104142216A (en) * 2014-08-04 2014-11-12 无锡日联科技有限公司 Novel vacuum micro-leakage detection method
CN203940962U (en) * 2014-04-29 2014-11-12 江苏智航新能源有限公司 Lithium battery casing leakage detection apparatus
CN104374528A (en) * 2013-09-23 2015-02-25 中国科学院合肥物质科学研究院 Portable vacuum leak detector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4415430A1 (en) * 1994-05-02 1995-11-09 Wuerschinger Gmbh & Co Baubetr Leak testing appts. for tubular formed test part, esp. concrete pipe, shaft
EP0889310A3 (en) * 1997-06-30 1999-03-24 Samsung Electronics Co., Ltd. An apparatus for testing a join between two metallic members
CN201122119Y (en) * 2007-12-04 2008-09-24 上海电气电站设备有限公司 Evacuation leakage test device
CN203400741U (en) * 2013-08-13 2014-01-22 海宁胜晖化学工业有限公司 Test tube fixing support of magnetic stirrer
CN104374528A (en) * 2013-09-23 2015-02-25 中国科学院合肥物质科学研究院 Portable vacuum leak detector
CN203940962U (en) * 2014-04-29 2014-11-12 江苏智航新能源有限公司 Lithium battery casing leakage detection apparatus
CN104142216A (en) * 2014-08-04 2014-11-12 无锡日联科技有限公司 Novel vacuum micro-leakage detection method

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