CN102121867A - Tank body tightness detection device and tank body tightness detection method - Google Patents
Tank body tightness detection device and tank body tightness detection method Download PDFInfo
- Publication number
- CN102121867A CN102121867A CN201010003601XA CN201010003601A CN102121867A CN 102121867 A CN102121867 A CN 102121867A CN 201010003601X A CN201010003601X A CN 201010003601XA CN 201010003601 A CN201010003601 A CN 201010003601A CN 102121867 A CN102121867 A CN 102121867A
- Authority
- CN
- China
- Prior art keywords
- detected
- casing
- box sealing
- snap close
- water vessel
- 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
Links
Images
Abstract
The invention provides a tank body tightness detection device, which is used for detecting a tank body to be detected and comprises a body frame, a water tank sealing pressure head, an inflation device, a water container and an automatic driving device, wherein the body frame has a structure suitable for arranging the tank body to be detected on the body frame; the water tank sealing pressure head is arranged on the body frame and pressed on a water tank opening of the tank body to be detected, and has an inflation pipeline for inflating the tank body to be detected; the inflation device is connected with the inflation pipeline; the water container is arranged below the water tank sealing pressure head, and has the structure for accommodating the tank body to be detected; and the automatic driving device is connected with the water container, and is used for driving the water container to move up and down. The invention also provides a method for the tank body tightness detection device. In the device and the method, the efficiency is improved by 50 percent by utilizing automatic detection, operations are performed by a cylinder instead of a worker to meet the requirement of consistence.
Description
Technical field
The present invention relates to detection range, more specifically, relate to box sealing pick-up unit and box sealing detection method.
Background technology
At present, to the ripe without comparison measuring means of the impermeability of casing, the artificial dip operation of original adoption, with after the water tank inflation manually with water tank by in water, hunting leak.The defective that this mode exists is: automaticity is low and leak detection efficient is low, is awkward, and in addition, can't guarantee charge pressure in the water tank, can cause flase drop.
Summary of the invention
The present invention aims to provide a kind of box sealing pick-up unit, can solve the low and problems such as efficient is low of hunting leak of existing check system automaticity.
According to an aspect of the present invention, provide a kind of box sealing pick-up unit, be used to detect casing to be detected, having comprised: main frame, main frame have the casing setting structure thereon to be detected of being fit to; The tank seal pressure head is arranged on the main frame, and the tank seal pressure head is used to be pressed in the tank port of described casing to be detected, and the tank seal pressure head has the loading line to casing inflation to be detected; Aerating device is connected with loading line; Water vessel is arranged on tank seal pressure head below, and water vessel has the structure of holding casing to be detected; Automatic drive is connected with water vessel, is used to drive water vessel and moves up and down.
Preferably, the box sealing pick-up unit also comprises: go up drive unit, be arranged on the main frame and with the tank seal pressure head and be connected, be used to drive the tank seal pressure head and move up and down.
Preferably, the box sealing pick-up unit also comprises: control gear, be arranged on the main frame, and be used to control drive unit.
Preferably, last drive unit is a upper cylinder.
Preferably, aerating device is an air pump.
Preferably, the box sealing pick-up unit also comprises: the water vessel support, be arranged on the main frame, and be used to water vessel to provide support or fixing.
Preferably, automatic drive is a Rodless cylinder, is arranged on the main frame, and Rodless cylinder is connected with the water vessel support.
Preferably, water vessel is made by transparent material.
Preferably, water vessel is made by transparent organic glass.
Preferably, the box sealing pick-up unit also comprises: the tank port snap close, be arranged on the main frame, and be used for fixing the tank port of casing to be detected.
Preferably, the tank port snap close comprises: main snap close, secondary snap close, web member; Main snap close is arranged on the main frame; Secondary snap close probably is that half cangue is tabular with secondary snap close, and the two butt joint also links together by web member, and forms between main snap close and the secondary snap close and be fit to be enclosed within tank port running-on outward.
Preferably, the tank port of casing to be detected comprises: protuberance and recess, recess are positioned at the protuberance below; Running-on is greater than the bore of recess and less than the bore of protuberance.
Preferably, the box sealing pick-up unit also comprises: O-ring seal is used to be arranged between the tank port of tank seal pressure head and casing to be detected.
According to another aspect of the present invention, provide a kind of box sealing detection method,
It uses the box sealing pick-up unit according to claim,
Casing to be detected is placed on the main frame,
Locking tank port snap close,
Make the tank seal pressure head move down the tank port of shutting casing to be detected,
Water vessel is risen to the precalculated position casing to be detected is flooded,
By aerating device casing to be detected is inflated,
Timing is observed and is had or not bubble,
When the check setting-up time arrives, stop inflation, again water vessel dropped to initial position,
Make the tank seal pressure head rise to initial position;
Unclamp the tank port snap close, take off casing to be detected.
The present invention also provides another box sealing detection method, use foregoing box sealing pick-up unit, casing to be detected is placed on the main frame, locking tank port snap close, rises to the precalculated position with water vessel casing to be detected is flooded casing inflation back pressurize to be detected by aerating device, timing is observed and is had or not bubble, when the check setting-up time arrives, water vessel is dropped to initial position, make the tank seal pressure head rise to initial position; Unclamp the tank port snap close, take off casing to be detected.
Because adopting automatic drive to drive water vessel moves up and down, casing to be detected can be flooded, thereby replace the artificial action of soaking, so improved automaticity and leak detection efficient, low and the problems such as efficient is low of hunting leak of existing check system automaticity have been overcome, and then reached by aerating device assurance charge pressure, avoid the effect of flase drop.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown spatial structure according to the box sealing pick-up unit of the embodiment of the invention from the main perspective degree, wherein, installed casing to be detected, but the tank seal pressure head is not depressed as yet;
Fig. 2 has schematically shown the spatial structure of box sealing pick-up unit shown in Figure 1 from the backsight angle;
Fig. 3 has schematically shown the local structure for amplifying at A place among Fig. 1;
Fig. 4 has schematically shown the main TV structure according to the case mouth of the casing to be detected of the embodiment of the invention;
Fig. 5 has schematically shown the side-looking structure according to the case mouth of the casing to be detected of the embodiment of the invention;
Fig. 6 has schematically shown spatial structure according to the box sealing pick-up unit of the embodiment of the invention from the main perspective degree, and wherein, the tank seal pressure head is depressed;
Fig. 7 has schematically shown spatial structure according to the box sealing pick-up unit of the embodiment of the invention from the main perspective degree, and wherein, water vessel has risen to assigned address;
Fig. 8 has schematically shown spatial structure according to the box sealing pick-up unit of the embodiment of the invention from the backsight angle, and wherein, water vessel has risen to assigned address;
Fig. 9 has schematically shown the plan structure according to the tank port snap close of the embodiment of the invention;
Figure 10 has schematically shown the main snap close plan structure according to the tank port snap close of the embodiment of the invention;
Figure 11 has schematically shown the plan structure according to the secondary snap close of tank port of the embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 to Figure 11 has schematically shown the structure of each visual angle structure, each duty and relevant each parts according to the box sealing pick-up unit of the embodiment of the invention.As shown in Figure 1, a kind of box sealing pick-up unit according to the embodiment of the invention, be used to detect casing to be detected 80, the box sealing pick-up unit comprises: main frame 10, for example be fixed on the workplace or on the ground, main frame 10 has the structure that suitable casing 80 to be detected is provided with thereon, and main frame 10 can be tower structure, and it can provide support for the miscellaneous part in the box sealing pick-up unit or be fixing;
Tank seal pressure head 50, be arranged on the main frame 10, be used to be pressed on the tank port of casing to be detected 80, tank seal pressure head 50 for example has the structure of the case mouth that is fit to sealing casing to be detected, for example its end can be provided with O-ring seal 60, be used to be arranged between the tank port of tank seal pressure head 50 and casing 80 to be detected, when tank seal pressure head 50 is depressed, can be pressed on the tank port of casing to be detected 80; Certainly, O-ring seal 60 also can be arranged on outside the tank seal pressure head 50, is independent of tank seal pressure head 50 and is provided with;
Tank seal pressure head 50 also has the loading line (not shown) that is used for to casing to be detected 80 inflations, and for example, loading line is arranged on the inboard of tank seal pressure head 50; Aerating device is connected with loading line, and preferably, aerating device is an air pump, can improve aeration speed like this, in addition, solenoid valve can also be set, with the start and stop of automatic control air pump on loading line; Water vessel 100 is arranged on tank seal pressure head 50 belows, and water vessel 100 has the structure of holding casing to be detected 80, so that soak casing to be detected 80; Automatic drive 30 as shown in Figure 2, is connected with water vessel 100, for example, is connected with water vessel 100 by water vessel support 90, moves up and down thereby drive unit 30 moves up and down driving water vessel 100 by driving water vessel support 90.
Because adopting automatic drive 30 to drive water vessel 100 moves up and down, casing to be detected 80 can be flooded, thereby replace the artificial action of soaking, so improved automaticity and leak detection efficient, low and the problems such as efficient is low of hunting leak of existing check system automaticity have been overcome, and then reached by aerating device assurance charge pressure, avoid the effect of flase drop.
Preferably, as shown in Figure 1, the box sealing pick-up unit also comprises: go up drive unit 40, be arranged on the main frame 10 and with tank seal pressure head 50 and be connected, be used to drive tank seal pressure head 50.Like this, can realize driving tank seal pressure head 50 automatically, raise the efficiency.Drive unit 40 can be various suitable devices, for example, is fluid pressure drive device, like this, drives stable, accurate.Preferably, last drive unit 40 drives for cylinder, and promptly going up drive unit 40 is upper cylinder, and like this, cost is low, and speed is fast.
Preferably, as shown in Figure 1, the box sealing pick-up unit also comprises: control gear 20, be arranged on the main frame 10, and be used to control drive unit 40 or automatic drive 30.Control gear 20 is by step-down transformer, control circuit board, and solenoid directional control valve, panel-switch 31, parts such as timer are formed, and solenoid directional control valve is used to control automatic drive 30, thus control water vessel 100 moves up or moves down.Control gear adopts safe low tension to drive little relay, the work of control solenoid directional control valve.Timer is finished setting and the control of proving time.
Preferably, as depicted in figs. 1 and 2, the box sealing pick-up unit also comprises: water vessel support 90, be arranged on the main frame 10, and be used to water vessel 100 to provide support or fixing.In addition, water vessel support 90 also can be arranged on outside the main frame 10, as long as can provide support or fix for water vessel 100.
Preferably, water vessel 100 is made by transparent material, so that observe.Preferably, water vessel 100 is made by transparent organic glass, and like this, water vessel 100 is cracky not.
Preferably, as shown in Figure 1, the box sealing pick-up unit also comprises: tank port snap close 70 is arranged on the main frame 10, the tank port that is used for fixing casing to be detected 80, tank port snap close 70 can have various suitable structures to fix the tank port of casing to be detected 80.
Preferably, as Fig. 3, Fig. 9, Figure 10, shown in Figure 11, tank port snap close 70 comprises: main snap close 701, secondary snap close 702, web member 703; Secondary snap close 702 is arranged on the main frame 10, for example is connected with main frame 10 by connecting portion 7021; For removably connecting, like this, make things convenient for the installation when testing between main snap close 701 and the secondary snap close 702; If disregard connecting portion 7021, main snap close 701 can probably be that half cangue is tabular for example with secondary snap close 702, and the two butt joint also links together by web member 703, and forms between main snap close 701 and the secondary snap close 702 and be fit to be enclosed within the outer running-on 705 of tank port.Web member 703 for example can be a screw, secondary snap close 702 has and is fit to main snap close 701 and is plugged on wherein cavity or space, main snap close 701 can be plugged in the secondary snap close 702, and can this screw be that axle rotates with respect to secondary snap close 702, like this, can regulate according to the size of required running-on 705.Certainly, said structure is tank port a kind of of numerous suitable casings 80 fixing to be detected, and other suitable methods can also be arranged, and at this, does not exemplify one by one.
Preferably, as shown in Figure 4 and Figure 5, the tank port of casing 80 to be detected comprises: protuberance 802 and recess 801, recess 801 are positioned at protuberance 802 belows; Running-on 705 is greater than the bore of recess 801 and less than the bore of protuberance 802.During installation, open tank port snap close 70, running-on 705 is enclosed within outside the recess 801, and block protuberance 802.Like this, when 50 pairs of casings to be detected 80 of tank seal pressure head were inflated, the stress point of casing 80 concentrated on protuberance 802, can not produce any influence (can not produce deformation, can not damage the tank port screw thread) to the main body of casing 80 itself.
The present invention also provides a kind of box sealing detection method,
It uses foregoing box sealing pick-up unit,
Casing to be detected 80 is placed on the main frame 10,
Locking tank port snap close 70, fixing with casing to be detected 80,
Make tank seal pressure head 50 move down the tank port of shutting casing to be detected 80, wherein will seal the tank port of casing to be detected 80, for example by O-ring seal 60 sealings, tank seal pressure head 50 is moved down can be driven by casing top half,
To casing to be detected 80 inflation back pressurizes, it can be controlled by solenoid valve by aerating device,
Timing is observed and is had or not bubble,
When the check setting-up time arrives, stop inflation, again water vessel 100 dropped to initial position,
Make tank seal pressure head 50 rise to initial position;
Unclamp tank port snap close 70, take off casing to be detected 80.
The present invention also provides another box sealing detection method, use foregoing box sealing pick-up unit, casing to be detected 80 is placed on the main frame 10, locking tank port snap close 70, by aerating device casing to be detected 80 is inflated the back pressurizes, water vessel 100 is risen to the precalculated position floods casing to be detected 80, timing is observed and is had or not bubble, when the check setting-up time arrives, water vessel 100 is dropped to initial position, make tank seal pressure head 50 rise to initial position; Unclamp tank port snap close 70, take off casing to be detected 80.
The present invention can be used to detect the air cleaner water tank, certainly, can also detect the water tank that other have analogue.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
After introducing box sealing pick-up unit of the present invention, robotization has detected with improved efficiency 50%, and cylinder replacement manually-operated, and coherence request is satisfied.And before this, adopt manual detection, and need manually to be pressed into again and to detect in the water with sealant tape sealing radiator mouth, inefficiency, and manually-operated causes the consistance extreme difference, can not satisfy the detection requirement.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. a box sealing pick-up unit is used to detect casing to be detected (80), it is characterized in that, comprising:
Main frame (10), described main frame (10) have suitable described casing (80) setting structure thereon to be detected;
Tank seal pressure head (50) is arranged on the described main frame (10), is used to be pressed in the tank port of described casing (80) to be detected, and described tank seal pressure head (50) has the loading line to described casing (80) inflation to be detected;
Aerating device is connected with described loading line;
Water vessel (100) is arranged on tank seal pressure head (50) below, and described water vessel (100) has the structure of holding described casing (80) to be detected;
Automatic drive (30) is connected with described water vessel (100), is used to drive described water vessel (100) and moves up and down.
2. box sealing pick-up unit according to claim 1 is characterized in that, also comprises:
Last drive unit (40) is arranged on described main frame (10) and upward and with described tank seal pressure head (50) is connected, and is used to drive described tank seal pressure head (50) and moves up and down.
3. box sealing pick-up unit according to claim 2 is characterized in that, also comprises:
Control gear is arranged on the described main frame (10), is used to control described drive unit (40) or the described water vessel (100) gone up.
4. box sealing pick-up unit according to claim 2 is characterized in that,
Described upward drive unit (40) is a upper cylinder.
5. box sealing pick-up unit according to claim 1 is characterized in that,
Described aerating device is an air pump.
6. box sealing pick-up unit according to claim 1 is characterized in that, also comprises:
Water vessel support (90) is arranged on the described main frame (10), is used to described water vessel (100) to provide support or fixing.
7. box sealing pick-up unit according to claim 6 is characterized in that,
Described automatic drive (30) is a Rodless cylinder, is arranged on the described main frame (10), and described Rodless cylinder is connected with water vessel support (90).
8. box sealing pick-up unit according to claim 7 is characterized in that,
Described water vessel (100) is made by transparent material.
9. box sealing pick-up unit according to claim 8 is characterized in that,
Described water vessel (100) is made by transparent organic glass.
10. box sealing pick-up unit according to claim 2 is characterized in that, also comprises:
Tank port snap close (70) is arranged on the described main frame (10), is used for fixing the tank port of described casing (80) to be detected.
11. box sealing pick-up unit according to claim 10 is characterized in that,
Described tank port snap close (70) comprising: main snap close (701), secondary snap close (702), web member (703);
Described secondary snap close (702) is arranged on the described main frame (10),
Described main snap close (701) probably is that half cangue is tabular with described secondary snap close (702), the two butt joint also links together by described web member (703), and forms between described main snap close (701) and the described secondary snap close (702) and be fit to be enclosed within the outer running-on (705) of described tank port.
12. box sealing pick-up unit according to claim 11 is characterized in that,
The tank port of described casing (80) to be detected comprising: protuberance (802) and recess (801), and the female portion (801) is positioned at described protuberance (802) below;
Described running-on (705) is greater than the bore of the female portion (801) and less than the bore of described protuberance (802).
13. box sealing pick-up unit according to claim 1 is characterized in that, also comprises:
O-ring seal (60) is used to be arranged between the tank port of described tank seal pressure head (50) and described casing (80) to be detected.
14. a box sealing detection method,
Use box sealing pick-up unit according to claim 12,
Casing to be detected (80) is placed on the described main frame (10),
Lock described tank port snap close (70),
Described tank seal pressure head (50) is moved down shut the tank port of described casing (80) to be detected,
Described water vessel (100) is risen to the precalculated position described casing to be detected (80) is flooded,
By described aerating device described casing to be detected (80) is inflated the back pressurize,
Timing is observed and is had or not bubble,
When the check setting-up time arrives, stop inflation, more described water vessel (100) dropped to initial position,
Make described tank seal pressure head (50) rise to initial position;
Unclamp described tank port snap close (70), take off described casing to be detected (80).
15. a box sealing detection method,
Use box sealing pick-up unit according to claim 12,
Casing to be detected (80) is placed on the described main frame (10),
Lock described tank port snap close (70),
By described aerating device described casing to be detected (80) is inflated the back pressurize,
Described water vessel (100) is risen to the precalculated position described casing to be detected (80) is flooded,
Timing is observed and is had or not bubble,
When the check setting-up time arrives, described water vessel (100) is dropped to initial position,
Make described tank seal pressure head (50) rise to initial position;
Unclamp described tank port snap close (70), take off described casing to be detected (80).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010003601A CN102121867B (en) | 2010-01-08 | 2010-01-08 | Tank body tightness detection device and tank body tightness detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010003601A CN102121867B (en) | 2010-01-08 | 2010-01-08 | Tank body tightness detection device and tank body tightness detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102121867A true CN102121867A (en) | 2011-07-13 |
| CN102121867B CN102121867B (en) | 2012-10-03 |
Family
ID=44250470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010003601A Active CN102121867B (en) | 2010-01-08 | 2010-01-08 | Tank body tightness detection device and tank body tightness detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102121867B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282415A (en) * | 2014-09-05 | 2015-01-14 | 申达电气集团浙江换热器有限公司 | Structure of directly welded transformer heat sink, leakage test air filling cover and sealing cover |
| CN104502032A (en) * | 2014-12-16 | 2015-04-08 | 格力电器（中山）小家电制造有限公司 | Device and method for detecting sealing property of hot tank of water dispenser |
| CN105300621A (en) * | 2015-10-13 | 2016-02-03 | 上海正源汽车附件有限公司 | Assembly air-tightness testing machine |
| CN107764489A (en) * | 2017-11-24 | 2018-03-06 | 苏州富强科技有限公司 | A kind of air-tightness detection device of sealing structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2368028Y (en) * | 1999-04-17 | 2000-03-08 | 重庆兴华自控设备制造有限公司 | Lifting water leakage checking machine |
| CN2729676Y (en) * | 2004-09-25 | 2005-09-28 | 田长陇 | Leakage detecting machine for water supply and drainage of water tank |
| CN201037801Y (en) * | 2007-04-12 | 2008-03-19 | 比亚迪股份有限公司 | Air-tight container leakage detecting device |
| CN101393065A (en) * | 2008-11-04 | 2009-03-25 | 兰州金牛轨道交通装备有限责任公司 | Pressure test apparatus for cooling water cavity of pneumatic lifting cylinder cap |
| CN201637550U (en) * | 2010-01-08 | 2010-11-17 | 珠海格力电器股份有限公司 | Box body tightness detection device |
-
2010
- 2010-01-08 CN CN201010003601A patent/CN102121867B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282415A (en) * | 2014-09-05 | 2015-01-14 | 申达电气集团浙江换热器有限公司 | Structure of directly welded transformer heat sink, leakage test air filling cover and sealing cover |
| CN104502032A (en) * | 2014-12-16 | 2015-04-08 | 格力电器（中山）小家电制造有限公司 | Device and method for detecting sealing property of hot tank of water dispenser |
| CN105300621A (en) * | 2015-10-13 | 2016-02-03 | 上海正源汽车附件有限公司 | Assembly air-tightness testing machine |
| CN107764489A (en) * | 2017-11-24 | 2018-03-06 | 苏州富强科技有限公司 | A kind of air-tightness detection device of sealing structure |
| CN107764489B (en) * | 2017-11-24 | 2024-05-03 | 苏州富强科技有限公司 | Air tightness detection device of sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102121867B (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201637550U (en) | Box body tightness detection device | |
| CN207585849U (en) | A kind of valve cock air tightness detection mechanism | |
| CN102121867B (en) | Tank body tightness detection device and tank body tightness detection method | |
| CN203224338U (en) | Apparatus for detecting seal performance of weldment | |
| CN205367708U (en) | High pure chemistry liquid discharge apparatus | |
| CN108332911A (en) | Fuel tank air-tightness detection method | |
| CN208313722U (en) | A kind of U heat exchange pressure testing device | |
| CN202814668U (en) | Water pump sealed testing device | |
| CN110907102B (en) | Valve detection device | |
| CN210243114U (en) | Bellows leakproofness detection device | |
| CN201133861Y (en) | Oil tank gas-tight test device | |
| CN218956033U (en) | Valve tightness detection device | |
| CN203745155U (en) | Fuel tank comprehensive leakage detection platform | |
| CN205826233U (en) | A kind of water heater liner examination water detection equipment | |
| CN102116239A (en) | Pneumatic detection platform for electronic injection device | |
| CN204637402U (en) | The indoor hydrant pressure testing machine that testing efficiency is high | |
| CN105699017A (en) | Leak hunting device for multi-hole workpiece | |
| CN204177540U (en) | The leakage detection apparatus of bend charge valve | |
| CN204188355U (en) | For the Leakage Test device of flange assembly | |
| CN205483429U (en) | Porous work piece device that leaks hunting | |
| CN204903059U (en) | Torque tester | |
| CN104215402A (en) | Empty can air tightness detecting device | |
| CN204903057U (en) | PE ball valve torque testing device | |
| CN202101823U (en) | Air tight testing device used for automobile water chamber | |
| CN108679295B (en) | Detection equipment for detecting leakage of gas meter valve and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |