CN108120561B - A kind of watertightness airtightness test table - Google Patents
A kind of watertightness airtightness test table Download PDFInfo
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- CN108120561B CN108120561B CN201711389411.4A CN201711389411A CN108120561B CN 108120561 B CN108120561 B CN 108120561B CN 201711389411 A CN201711389411 A CN 201711389411A CN 108120561 B CN108120561 B CN 108120561B
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- air
- water
- fixed
- seal closure
- air inlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 230000000903 blocking effect Effects 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 23
- 238000001514 detection method Methods 0.000 abstract description 15
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000284 extract Substances 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010011376 Crepitations Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to detection fields, specifically disclose a kind of watertightness airtightness test table；Including rack, workbench, hold-down mechanism and water pump, hold-down mechanism includes seal closure, the cylinder and air pump assembly that are each attached in rack, cylinder is equipped with closed air inlet, compression bar is fixed on the piston of cylinder, seal closure is fixed on compression bar, seal closure is opening down, the inclination of seal closure top, air pump assembly includes air inlet air pump and outlet air pump, the inlet end of air inlet air pump is connected to the highest point of seal cover cavity, outlet side is connected to air inlet, and the inlet end of outlet air pump is connected to cylinder, outlet side is connected to seal closure；Water pump is connected to seal closure, and workbench is fixed on the rack, and air bag, drainpipe and cricoid water blocking bucket is fixed on workbench, water blocking bucket position is in being communicated with closed air inlet pipe on seal closure periphery, air bag, air inlet pipe is far from air bag one end through workbench.This programme can be to avoid air inlet pipe and workpiece gas leakage or leak.
Description
Technical field
The present invention relates to detection fields, and in particular to a kind of watertightness air-tightness detection device.
Background technique
When workpiece is cast, after the molten metal of molten state is injected mold, need to cool down mold, so that in mold
Molten metal fast cooling shaping, but when inhomogeneous cooling is even, it is easy to appear crackle on workpiece, cracked workpiece was using
Gas leakage or leakage are easy in journey, so this workpiece belongs to substandard products.But these crackles are smaller, are visually difficult to find, so
It needs to carry out watertightness and air-leakage test to workpiece.
When carrying out air-leakage test at present, the opening of workpiece is connected to air inlet pipe, is then put the workpiece in water, into
Tracheae is inflated into the inner cavity of workpiece, increases the pressure in workpiece lumen, if the gas meeting there are leak source on workpiece, in workpiece
Slowly exudation, and bubble is formed in water；When carrying out watertightness detection, put the workpiece in water, if workpiece there are leak source,
Water, which will be slow, to penetrate into workpiece, and whether then observe has water residual in workpiece.But in this way when detecting, by
Need to inflate into workpiece in air inlet pipe, the opening of workpiece and air inlet pipe junction is difficult to seal, gas be easy from air inlet pipe with
The junction of workpiece leaks out, so can not determine whether that there are leak sources on workpiece completely.Secondly, after putting the workpiece in water,
Workpiece falls on the bottom under self gravitation effect, and workpiece bottom is contacted with the bottom, if workpiece bottom generates tiny bubble meeting at this time
By workpiece bottom blocking and can not float, it is difficult to found by worker.And even if workpiece and water-bed contact position be there are gap, by
In being sealed, water also can not enter workpiece lumen from contact position, so this detection has erroneous judgement.
Summary of the invention
The purpose of the present invention is to provide a kind of watertightness airtightness test tables for avoiding gas leakage or leak.
In order to achieve the above objectives, the technical scheme is that a kind of watertightness airtightness test table, including rack, work
Make platform, hold-down mechanism and water pump, hold-down mechanism includes seal closure, the cylinder and air pump assembly that are each attached in rack, on cylinder
Equipped with closed air inlet, compression bar is fixed on the piston of cylinder, seal closure is fixed on compression bar, and seal closure is opening down,
The inclination of seal closure top, air pump assembly includes air inlet air pump and outlet air pump, the inlet end of air inlet air pump and seal cover cavity
Highest point connection, outlet side are connected to air inlet, and the inlet end of outlet air pump is connected to cylinder, outlet side is connected to seal closure；
Water pump is connected to seal closure, and workbench is fixed on the rack, and air bag, drainpipe and cricoid water blocking bucket are fixed on workbench,
Water blocking bucket position is in being communicated with closed air inlet pipe on seal closure periphery, air bag, air inlet pipe is far from air bag one end through workbench.
It first detects air tightness of workpiece, first all seals the opening on workpiece before detection, putting workpiece is eccentric when detection
It sets on air bag, and water pump is connected to external water pipe, then open air inlet air pump and water pump, water pump adds water into water blocking bucket, into
Gas in seal closure is sent into cylinder by gas air pump, and piston moves downward for cylinder, and seal closure moves downward.At seal closure bottom
After portion is contacted with the water surface, reduce the power of water pump, under the action of air inlet air pump, the water in water blocking bucket is inhaled into seal closure.
Finally sealed cover pressure on the table, turns off water pump, seal closure covers on Workpiece periphery at this time.Since seal closure top droop is set
It sets, the gas in seal closure is moved along at the top of seal cover cavity to seal cover cavity highest point, is finally gathered in seal closure
Chamber highest point, air inlet air pump extracts gas remaining in seal closure out, and is sent into cylinder.Pressure in cylinder increases, cylinder
The downward pressure that is subject to of piston increase, piston increases the pressure of seal closure, the active force between seal closure and workbench
Increase, extraneous shipwreck between seal closure and workbench to enter.
Then air inlet is closed, and disconnects air inlet air pump and cylinder, air inlet air pump extracts the water in seal closure out, avoids
Water, which enters, to be difficult to clear up in cylinder, and the pressure in seal closure reduces, and closes air inlet air pump.And the pressure in workpiece is normal pressure, institute
The gas in workpiece can be promoted if there are leak sources on workpiece by being greater than the pressure in seal closure with the pressure of inside workpiece at this time
Body is leaked out from leak source, and the gas of leakage forms bubble at the top of workpiece surface or seal cover cavity.Then air inlet pipe is opened, by
Reduce in the pressure in seal closure, extraneous air can enter in air bag from air inlet pipe, expand air bag, air bag puts bias
The workpiece inclination set on it is even overturn, convenient to observe workpiece bottom, and if workpiece bottom generate bubble, and workpiece
It can be shaken when inclination or overturning, bubble is easily separated from workpiece and floats at the top of seal closure, facilitates discovery bubble.
Then workpiece watertightness is detected, opens water pump, water pump water-filling into seal closure, sealing internal mask pressure increases, if work
There are leak sources on part surface, and the water in seal closure can be promoted to enter in workpiece.It switches off the pump after detection, opens outlet gas
Pump, outlet air pump enter gas and water in cylinder in seal closure, and the piston of cylinder increases, and seal closure is opened, and then take out
Workpiece simultaneously removes the sealing at workpiece openings, checks in workpiece whether there is water residual, if remaining water in workpiece, workpiece watertight
Property is bad.The water-filling into water blocking bucket is not needed when detecting to next workpiece.
This programme has the beneficial effect that
(1) opening on workpiece is closed in advance, gas will not be leaked out from the opening of workpiece, and water will not be from
Opening enters in workpiece, will not interfere to detection.
(2) when starting to detect air-tightness, water pump adds water into water blocking bucket, and air pump moves downward seal closure, in seal closure
When bottom is lower than the water surface in water blocking bucket, seal closure forms negative pressure under the action of air pump, so the water in water blocking bucket can be by
In suction seal cover, quickly make to accelerate detection speed full of water in seal closure.
(3) when detecting air-tightness, the pressure in seal closure is less than extraneous pressure, after opening air inlet pipe, extraneous air
Air bag can be entered, expand air bag, air bag pushes workpiece rotation, and workpiece can expose bottom when tilting, facilitate observation workpiece
Whether bottom has bubble generation, avoids missing inspection.
(4) water blocking bucket can play the role of water blocking, fill while air pump allows seal closure to glide into water blocking bucket
Water, and the water being filled in water blocking bucket can be inhaled into the seal closure constantly pushed, the time required to shortening detection, improve detection effect
Rate.
Preferred embodiment one, as the further improvement to base case, workbench is equipped with closed discharge outlet.All
After workpiece sensing, discharge outlet is opened, water is discharged from discharge outlet under self gravitation effect, does not need manually to remove water blocking bucket
Interior water reduces the workload of worker.
Preferred embodiment two, as the further improvement to preferred embodiment one, workbench is equipped with cricoid seal groove, sealing
Cover lower end can be caught in seal groove.The contact area with seal closure can be increased at this time, further avoid seal closure gas leakage.
Preferred embodiment three is fixed with sealing ring in seal groove as the further improvement to preferred embodiment two.Sealing ring into
One step improves the sealing effect of seal closure, avoids seal closure gas leakage.
Preferred embodiment four, as the further improvement to preferred embodiment three, bottom of the frame is equipped with several hydraulic cylinders, hydraulic cylinder
Bottom is fixed on the rack, and is fixed with support rod on the piston of hydraulic cylinder.By the height for adjusting the adjustable workbench of hydraulic cylinder
Degree, the worker for being allowed to be more suitable for different height operate, and worker is avoided to bend over, and improve comfort level when worker operation.
Preferred embodiment five, as the further improvement to preferred embodiment four, support rod bottom is fixed with support base.Support base
The contact area with ground can be increased, to reduce the pressure that ground is born in unit area, ground is avoided to be subject to crushing.
Preferred embodiment six, as the further improvement to preferred embodiment five, support base bottom is fixed with rubber layer.Rubber layer
It can be worn to avoid support base.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of watertightness airtightness test table embodiment of the present invention.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
Appended drawing reference are as follows: rack 1, air inlet air pump 11, connecting tube 12, workbench 2, water blocking bucket 21, air bag 22, air inlet pipe
23, cylinder 3, air inlet 31, air inlet switch 32, seal closure 4, frequency converter 5, water pump 51, hydraulic cylinder 6, support rod 61, support base
62, rubber layer 63.
As shown in Figure 1, a kind of watertightness airtightness test table, including rack 1, workbench 2, hold-down mechanism and water pump 51,
Hold-down mechanism includes cylinder 3, air pump assembly and seal closure 4, and cylinder 3 is welded in rack 1, along vertical side on the piston of cylinder 3
To compression bar is welded with, compression bar bottom is welded at the top of seal closure 4, seal closure 4 is opening down, and 4 inner cavity top of seal closure is in left low
Right high is obliquely installed.Cylinder 3 is equipped with air inlet 31 and air inlet switch 32, and air inlet switch 32 can close air inlet 31.Air pump
Component includes air inlet air pump 11 and outlet air pump, and the inlet end of outlet air pump is connected to by pipeline with cylinder 3, outlet side passes through pipe
Road is connected to the air inlet 31 on seal closure 4；The splicing of 11 inlet end of air inlet air pump has connecting tube 12,12 upper end of connecting tube and air inlet
Mouth 31 is connected to, and 11 outlet side of air inlet air pump is connected to by pipeline with 4 inner cavity top highest point of seal closure.Water pump 51 passes through another pipe
Road is connected to seal closure 4, and frequency converter 5 has been bolted on workbench 2, and frequency converter 5 is connect with water pump 51 by electric wire.Work
Make platform 2 to be welded in rack 1, workbench 2 is equipped with air bag 22, drainpipe and water blocking bucket 21, and 22 bottom of air bag is glued to workbench 2
Center at, 22 bottom of air bag, which is glued, an air inlet pipe 23, and workbench 2 is run through in 23 lower end of air inlet pipe, and 23 lower end of air inlet pipe is equipped with swollen
Distending closes, and expansion switch can close air inlet pipe 23.Water blocking bucket 21 is welded on workbench 2 and is located at 4 periphery of seal closure, workbench
2 are equipped with discharge outlet and port flap, and port flap is threadedly coupled with discharge outlet, and discharge outlet is located at 21 inner circumferential of water blocking bucket.Work
Platform 2 is equipped with cricoid seal groove, and seal groove is located at immediately below seal groove, and being glued in seal groove has sealing ring, and sealing ring is along perpendicular
Histogram to interface be in concave shape.1 bottom of rack is set there are four hydraulic cylinder 6, and 6 bottom of hydraulic cylinder is welded in rack 1, hydraulic cylinder
Support rod 61 is welded on 6 piston, for 61 bottom of support rod integrally formed with support base 62,62 bottom of support base, which is glued, rubber
Layer 63.
It first detects air tightness of workpiece, first all seals the opening on workpiece before detection, putting workpiece is eccentric when detection
It sets on air bag 22, and water pump 51 is connected to external water pipe, open simultaneously air inlet switch 32, then open air inlet air pump 11 and water
Pump 51, and air inlet air pump 11 is rotated forward, water pump 51 adds water into water blocking bucket 21.After 4 bottom of seal closure is contacted with the water surface, adjustment
Frequency converter 5 is to reduce the power of water pump 51, and under the action of air inlet air pump 11, the water in water blocking bucket 21 is inhaled into seal closure 4.
When finally sealed cover 4 is pressed on workbench 2,51 are switched off the pump, seal closure 4 covers on Workpiece periphery at this time.Air inlet air pump 11 will be close
After remaining gas is sent into cylinder 3 in sealing cover 4, air inlet switch 32 is closed, air inlet switch 32 closes air inlet 31.Then make to connect
Adapter tube 12 and air inlet 31 disconnect, and air inlet air pump 11 extracts the water in seal closure 4 out, and air inlet air pump 11 is closed after 30 seconds.It sees
It examines whether workpiece surface forms bubble, when needing to observe workpiece bottom with the presence or absence of leak source, opens expansion switch, air bag 22 is swollen
Swollen, air bag 22 overturns workpiece inclination even.
Then workpiece watertightness is detected, water pump 51 is opened, increases pressure in seal closure 4, after detection, switches off the pump
51, air inlet switch 32 and outlet air pump are opened, seal closure 4 is opened, then takes out workpiece and remove the sealing at workpiece openings, examines
Whether workpiece in have water residual, after a workpiece sensing, water remains in water blocking bucket 21 if looking into, detects to next workpiece
When do not need the water-filling into water blocking bucket 21 again.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the inventive concept of the premise, several modifications and improvements can also be made, these also should be considered as guarantor of the invention
Range is protected, these all will not influence the effect and patent practicability that the present invention is implemented.The present invention omits the technology of description, shape
Shape, construction portion are well-known technique.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711389411.4A CN108120561B (en) | 2017-12-21 | 2017-12-21 | A kind of watertightness airtightness test table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711389411.4A CN108120561B (en) | 2017-12-21 | 2017-12-21 | A kind of watertightness airtightness test table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108120561A CN108120561A (en) | 2018-06-05 |
| CN108120561B true CN108120561B (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711389411.4A Expired - Fee Related CN108120561B (en) | 2017-12-21 | 2017-12-21 | A kind of watertightness airtightness test table |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110220988A (en) * | 2019-06-14 | 2019-09-10 | 中国科学院亚热带农业生态研究所 | A kind of simulation soil column N2O dissolves the method and device of process nitrogen acquisition |
| CN114034443A (en) * | 2021-11-26 | 2022-02-11 | 重庆怡之驰机械有限公司 | An air tightness detection device |
| CN114563142B (en) * | 2022-02-21 | 2023-05-16 | 重庆交通职业学院 | Sealing strip tightness detection device for vehicle |
| CN116735120B (en) * | 2023-08-15 | 2023-11-03 | 苏州方正工程技术开发检测有限公司 | Chip packaging sealing detection equipment |
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| US4776209A (en) * | 1987-07-13 | 1988-10-11 | W. L. Gore & Associates, Inc. | Leakage detector |
| US5237855A (en) * | 1988-08-22 | 1993-08-24 | Expertek, Inc. | Apparatus for leak testing a fluid containing chamber |
| JP2545906Y2 (en) * | 1991-09-13 | 1997-08-27 | 旭光学工業株式会社 | Inspection device for waterproof case |
| JP2876558B2 (en) * | 1994-06-09 | 1999-03-31 | エンケイ株式会社 | Airtightness test equipment |
| CN2804831Y (en) * | 2005-07-18 | 2006-08-09 | 李荣富 | Dry/water combination testing machine for airtightness of cavity work pieces |
| CN2864646Y (en) * | 2005-12-15 | 2007-01-31 | 长安汽车（集团）有限责任公司 | Air tightness test device for rubber parts |
| CN201051039Y (en) * | 2006-12-30 | 2008-04-23 | 上海比亚迪有限公司 | Container leakage detection system |
| CN201688948U (en) * | 2010-05-18 | 2010-12-29 | 威海联桥仲精机械有限公司 | Engine cylinder air-tightness detection platform |
| CN202018365U (en) * | 2011-04-17 | 2011-10-26 | 铁岭天河机械制造有限责任公司 | Air-tightness inspection device for cam bearing caps of automobile engines |
| CN202403880U (en) * | 2012-01-13 | 2012-08-29 | 上海新孚美变速箱技术服务有限公司 | Torque converter leakage checking machine |
| CN204718746U (en) * | 2015-05-11 | 2015-10-21 | 宁波津一油泵有限公司 | A kind of gas-liquid sealing pick-up unit of substrate |
| CN106872117A (en) * | 2017-03-31 | 2017-06-20 | 江苏神舟车业集团有限公司 | Oil sump pneumatic sealing test frock |
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Effective date of registration: 20200506 Address after: No. 77-1, 77-4, No. 17, pushiyang Road, Shiqiao, Jiulongpo District, Chongqing Patentee after: Chongqing Xiaoyu Robot Co.,Ltd. Address before: Jiulongpo District of Chongqing City Road 400039 students Pioneering Park No. 71, No. 71 of 1 No. B4-4 Patentee before: CHONGQING XIAOWEICHENG ENTERPRISE INCUBATOR Co.,Ltd. |
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Granted publication date: 20190607 |