CN112067206B - Sealing method - Google Patents
Sealing method Download PDFInfo
- Publication number
- CN112067206B CN112067206B CN202010845809.XA CN202010845809A CN112067206B CN 112067206 B CN112067206 B CN 112067206B CN 202010845809 A CN202010845809 A CN 202010845809A CN 112067206 B CN112067206 B CN 112067206B
- Authority
- CN
- China
- Prior art keywords
- sealing
- workpiece
- detected
- opening
- sealing ring
- 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.)
- Active
Links
Images
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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The invention provides a sealing method, which comprises the following steps: placing a workpiece to be detected in a leak detection box; placing a sealing ring at an opening of a workpiece to be measured; placing a sealing device at the opening of the workpiece to be detected, wherein the sealing device seals the opening of the workpiece to be detected; the sealing device extrudes the sealing ring, so that the sealing ring is stressed and deformed and is more attached to the opening of the workpiece to be measured; filling the leak detection gas into the workpiece to be detected by using an inflation device; and detecting the leakage detection gas in the leakage detection box. Utilize sealing device seals the opening of work piece that awaits measuring, sealing device is right the sealing washer carries out extrusion deformation, makes the sealing washer with the opening of work piece that awaits measuring is hugged closely more, has strengthened the leakproofness.
Description
Technical Field
The invention belongs to the technical field of leak detection, and particularly relates to a sealing method.
Background
In the prior art, along with the development of scientific technology, no matter in the technical field of vacuum or high-pressure air tightness engineering, the air tightness requirement of a part or a system is improved along with the development of the scientific technology, so that the research on improving the air tightness detection precision and influencing the air tightness factor is very urgent. The part of the workpiece with the opening to be detected needs to be sealed in the leakage detection process, a detection device used in the existing leakage detection method generally uses flexible materials such as rubber to seal the opening in an interference fit manner, and after long-time friction use, the flexible materials are easily abraded. Therefore, the existing leak detection method has the technical defect of large loss of detection equipment.
Disclosure of Invention
The present invention is directed to overcoming the disadvantages and drawbacks of the prior art and providing a sealing method.
The sealing method of one embodiment of the invention comprises the following steps:
placing a workpiece to be detected in a leak detection box;
placing a sealing ring at an opening of a workpiece to be measured;
placing a sealing device at the opening of the workpiece to be detected, wherein the sealing device seals the opening of the workpiece to be detected;
the sealing device extrudes the sealing ring, so that the sealing ring is stressed and deformed and is more attached to the opening of the workpiece to be measured;
filling the leak detection gas into the workpiece to be detected by using an inflation device;
and detecting the leak detection gas in the leak detection box.
According to the sealing method of the embodiment of the invention, the opening of the workpiece to be detected is sealed by using the sealing device, the sealing device extrudes and deforms the sealing ring, so that the sealing ring is more closely attached to the opening of the workpiece to be detected, the sealing performance is enhanced, the sealing ring cannot rub against the workpiece to be detected, the surface of the sealing ring is not easy to damage, the service life of the sealing ring is longer, and the service life of the sealing device is longer. The technical defect that the loss of detection equipment is large in the existing leak detection method is overcome.
In a preferred or optional embodiment, after the workpiece to be detected is placed, the interior of the leak detection box is vacuumized.
In a preferred or optional embodiment, when the leak detection box is vacuumized, the air pressure of the leak detection box is detected in real time, and a real-time air pressure change curve of the leak detection box in a preset time period is obtained.
In a preferred or optional embodiment, the sealing device is provided with a vent pipeline, and the inflation device inflates the leak detection gas into the workpiece to be detected through the vent pipeline.
In a preferred or optional embodiment, the concentration of the leak detection gas of the leak detection box is detected in real time, so as to obtain a real-time concentration change curve of the leak detection gas of the leak detection box in a preset time period.
In a preferred or alternative embodiment, the leak detection gas is a halogen gas, helium gas, or hydrogen gas.
In a preferred or optional embodiment, the pressure applied to the sealing ring is detected in real time to obtain a stress variation curve of the sealing ring.
In a preferred or optional embodiment, the magnitude of the force of the sealing device for pressing the sealing ring is adjusted according to the stress variation curve of the sealing ring.
In a preferred or optional embodiment, the pressure inside the workpiece to be detected and the pressure inside the leak detection box are detected in real time, and the stress change curve of the workpiece to be detected is calculated.
In a preferred or optional embodiment, the magnitude of the force of the sealing device for squeezing the sealing ring is adjusted according to the stress variation curve of the workpiece to be measured.
In a preferred or optional embodiment, the magnitude of the pressing force of the sealing device on the sealing ring is adjusted according to the tensile strength of the opening of the workpiece to be measured.
In order that the invention may be more clearly understood, specific embodiments thereof will be described hereinafter with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the overall configuration of a leak detecting apparatus sealed in embodiment 1 of the invention;
FIG. 2 is a schematic view showing the structure of a sealing device according to embodiment 1 of the present invention;
FIG. 3 is a first structural view of a fixing device according to embodiment 1 of the present invention;
FIG. 4 is a second construction view of the fixing device according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of a part of a leak detecting apparatus sealed in embodiment 2 of the invention;
FIG. 6 is a schematic view showing the structure of a sealing device according to example 2 of the present invention;
FIG. 7 is a schematic view of a part of a leak detecting apparatus sealed in embodiment 3 of the invention;
fig. 8 is a schematic structural view of a sealing device according to embodiment 3 of the present invention.
The drawings illustrate schematically: 1. a leak detection box; 2. a sealing device; 21. a seal ring; 22. sealing the pushing piece; 221. sealing the push rod; 222. a sealing table; 223. an annular groove; 23. an air duct; 24. sealing the pulling piece; 3. an inflator; 4. a detection device; 5. a fixing device; 6. a vacuum pump; 7. a deflation valve; 8. a muffler; 9. a vacuum gauge; 10. and (5) a workpiece to be detected.
Detailed Description
Example 1
Referring to fig. 1, fig. 1 is a schematic diagram of the overall structure of a leak detection device sealed in embodiment 1 of the present invention.
The sealing leakage detection device provided by the embodiment comprises a leakage detection box 1 with an accommodating space, a sealing device 2, an inflation device 3 with leakage detection gas, a detection device 4 and a vacuum pump 6. The containing space is used for placing a workpiece 10 to be tested, the sealing device 2 is arranged in the containing cavity of the leakage detection box 1, the output port of the inflating device 3 is communicated with the inside of the workpiece 10 to be tested, the detection device 4 is communicated with the inside of the leakage detection box 1, and the vacuum pump 6 is communicated with the inside of the leakage detection box 1.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a sealing device according to embodiment 1 of the present invention.
Referring to fig. 3 and fig. 4, fig. 3 is a first structural schematic diagram of a fixing device according to embodiment 1 of the present invention, and fig. 4 is a second structural schematic diagram of the fixing device according to embodiment 1 of the present invention.
The working principle of the sealing device 2 is as follows: the sealing device 2 of the present embodiment is mainly used for detecting the openings of the workpiece 10 to be detected, the surfaces of which are located on the same plane. Firstly, the sealing ring 21 is placed on the opening, the sealing ring 21 may be pre-disposed on the opening or pre-disposed in the annular groove 223, then the sealing push rod 221 and the sealing table 222 extrude and fix the sealing ring 21 toward the opening, the sealing ring 21 is deformed by force, so that the sealing ring 21 is more attached to the edge of the opening, and the sealing performance of the opening is improved. Because the sealing ring 21 is sealed and attached to the opening of the workpiece 10 to be measured through extrusion deformation, the surface of the sealing ring 21 does not rub against the workpiece 10 to be measured or the sealing push piece 22, so that the outer surface of the sealing ring 21 is not easily damaged, and the service life of the sealing ring 21 is prolonged.
The sealing push piece 22 is provided with an air duct 23, and the output port of the inflating device 3 is communicated with the inside of the workpiece 10 to be tested through the air duct 23. Specifically, the air duct 23 penetrates through the central axis of the sealing plunger 221 and the sealing platform 222, so that the air duct 23 is smoother when the inflator 3 inflates.
The detection device 4 is used for detecting the gas in the leak detection box 1, the leak detection gas is halogen gas, helium gas, hydrogen gas or other detectable media, and correspondingly, the detection device 4 is a halogen gas detector, a helium mass spectrometer leak detector, a hydrogen gas detector or other detection devices 4.
The sealing leakage detection device further comprises a fixing device 5, the fixing device 5 is arranged on the outer side of the workpiece 10 to be detected, and the fixing device 5 is used for fixing the workpiece 10 to be detected. The fixing device 5 may be a plurality of fixing rods, or may be a fixture, etc. commonly used by those skilled in the art.
The sealing leakage detection device further comprises a stress sensor, the stress sensor is arranged on the sealing device 2, and the stress sensor is used for detecting the pressure applied to the sealing ring 21. In this embodiment, the stress sensor may be disposed at an end of the sealing push rod 221, and the pressure applied to the sealing ring 21 is calculated by calculating a force relationship between the sealing table 222 and the end of the sealing push rod 221. In other embodiments, stress force sensors may be disposed at the contact portions of the sealing device 2 and the other clamping members with the workpiece 10 to be measured, and the pressure applied to the sealing ring 21 is calculated.
The sealing leakage detection device further comprises a control device, the control device is respectively electrically connected with the sealing device 2 and the stress sensor, and the control device controls the sealing device 2 to extrude the sealing ring 21 according to the pressure applied to the sealing ring 21. The control device can control the sealing pushing piece 22 through a motor, a transmission gear, a transmission rod, a screw rod and the like, so that the sealing pushing piece 22 extrudes the sealing ring 21. The control device adjusts the extrusion force of the sealing pushing piece 22 on the sealing ring 21 according to the stress state of the sealing ring 21 and the change of the internal pressure and the external pressure of the workpiece 10 to be measured, so that the sealing effect is ensured.
The seal leak detection apparatus further includes: a release valve 7, a silencer 8 and a vacuum gauge 9. The air release valve 7 is arranged on the surface of the leakage detection box 1, and the air release valve 7 is used for releasing the gas in the leakage detection box 1. The muffler 8 is arranged at the output port of the deflation valve, and the muffler 8 muffles in the deflation process of the deflation valve 7 to reduce the noise of the sealing leakage detection device. The vacuum gauge 9 is arranged on the surface of the leakage detection box 1, and the vacuum gauge 9 detects the vacuum degree of the leakage detection box 1 to ensure that the vacuum degree of the leakage detection box 1 meets the detection requirement.
The working principle is as follows: will the work piece 10 that awaits measuring fixes in the accommodation space of leak detection case 1, sealing device 2 is right the opening of the work piece 10 that awaits measuring is sealed, opens vacuum pump 6 will leak detection case 1 evacuates to find time, vacuum gauge 9 detects the vacuum of leak detection case 1, when in the default time, the vacuum of leak detection case 1 does not reach the vacuum corresponding with the default time, proves the work piece 10 that awaits measuring has big leak, stops the leak hunting procedure. And when the vacuum degree of the leakage detection box 1 is consistent with the vacuum degree corresponding to the preset time within the preset time, continuing the leakage detection program. The inflating device 3 inflates the leak detection gas into the workpiece 10 to be detected through the ventilation pipeline 23, and the detecting device 4 detects the gas in the accommodating space of the leak detection box 1 to detect whether the gas is mixed with the leak detection gas. When the gas filling device 3 fills the leak detection gas, the gas pressure in the workpiece 10 to be detected rises, the opening of the workpiece 10 to be detected is easy to deform, the stress sensor records the stress condition of the sealing ring 21, and the control device adjusts the extrusion force of the sealing pushing piece 22 on the sealing ring 21 for several times, so that the sealing failure caused by overlarge pressure or other factors can be found in time.
In the sealed leak detection device of this embodiment, be provided with sealing device, sealing device can seal the opening of the work piece that awaits measuring, sealing device passes through sealed the piece that pushes away is right the sealing washer carries out extrusion deformation, makes the sealing washer with the opening of the work piece that awaits measuring is hugged closely more, has strengthened the leakproofness, moreover the sealing washer can not with the work piece that awaits measuring rubs, the surface of sealing washer is difficult to the damage, the life-span of sealing washer is longer, sealing device's life is longer.
Example 2
Referring to fig. 5 and fig. 6, fig. 5 is a schematic view of a part of the structure of a sealing leak detection apparatus in embodiment 2 of the present invention, and fig. 6 is a schematic view of the structure of the sealing apparatus in embodiment 2 of the present invention.
The main difference between this embodiment and embodiment 1 is the structure of the sealing device 2.
The working principle of the sealing device 2 is as follows: the sealing device 2 of the present embodiment mainly detects the workpiece 10 to be measured in which the opening of the workpiece 10 to be measured is higher than the surface of the workpiece 10 to be measured. Firstly, the sealing ring 21 is sleeved on the opening, the sealing ring 21 may be sleeved on the opening in advance, or may be arranged on the sealing pushing member 22 or the sealing pulling member 24 in advance, and then the sealing pushing member 22 and the sealing pulling member 24 interact with each other, so that the sealing ring 21 is deformed under stress, the sealing ring 21 is made to be more attached to the outer surface of the opening, and the sealing performance of the opening is improved. Because the sealing ring 21 is sealed and attached to the opening of the workpiece 10 to be measured through extrusion deformation, the surface of the sealing ring 21 does not rub against the workpiece 10 to be measured or the sealing push piece 22, so that the outer surface of the sealing ring 21 is not easily damaged, and the service life of the sealing ring 21 is prolonged.
In this embodiment, the control device may control the seal pushing element 22 or the seal pulling element 24, as long as the seal pushing element 22 and the seal pulling element 24 can press the seal ring 21.
Example 3
Referring to fig. 7 and 8 together, fig. 7 is a schematic view of a part of a sealing leak detection apparatus according to embodiment 3 of the present invention, and fig. 8 is a schematic view of a sealing apparatus according to embodiment 3 of the present invention.
The main difference between this embodiment and embodiments 1 and 2 is the structure of the sealing device 2.
The working principle of the sealing device 2 is as follows: the sealing device 2 of the present embodiment mainly detects the workpiece 10 to be measured, in which the opening of the workpiece 10 to be measured is higher than the surface of the workpiece 10 to be measured. Firstly, the sealing ring 21 is arranged on the sealing pushing part 22 or the sealing pulling part 24 in advance, the sealing pushing part 22 and the sealing pulling part 24 are placed in the opening of the workpiece 10 to be measured, and then the sealing pushing part 22 and the sealing pulling part 24 interact with each other, so that the sealing ring 21 is deformed under stress, the sealing ring 21 is more attached to the inner surface of the opening, and the sealing performance of the opening is improved. Because the sealing ring 21 is sealed and attached to the opening of the workpiece 10 to be measured through extrusion deformation, the surface of the sealing ring 21 does not rub against the workpiece 10 to be measured or the sealing push piece 22, so that the outer surface of the sealing ring 21 is not easily damaged, and the service life of the sealing ring 21 is prolonged.
In this embodiment, the control device may control the seal pushing element 22 or the seal pulling element 24, as long as the seal pushing element 22 and the seal pulling element 24 can press the seal ring 21.
Example 4
This example provides a sealing method using the leak detection apparatus of any one of examples 1 to 3 described above.
The sealing method comprises the following steps:
step S1: and placing the workpiece to be detected in the leak detection box, and vacuumizing the interior of the leak detection box after the workpiece to be detected is placed, so that the interior of the leak detection box reaches a target vacuum degree. When the leak detection box is vacuumized, detecting the air pressure of the leak detection box in real time to obtain a real-time air pressure change curve of the leak detection box in a preset time period, and observing the air pressure change of the leak detection box, wherein the air pressure change reflects the tightness of the workpiece to be detected.
Step S2: and placing the sealing ring at the opening of the workpiece to be measured.
And step S3: and placing a sealing device at the opening of the workpiece to be detected, wherein the sealing device seals the opening of the workpiece to be detected.
And step S4: the sealing device extrudes the sealing ring, so that the sealing ring deforms under stress and is more attached to the opening of the workpiece to be measured.
Step S5: and filling the leak detection gas into the workpiece to be detected by using an inflation device. Specifically, the sealing device is provided with a vent pipe, and the inflation device inflates the leak detection gas into the workpiece to be detected through the vent pipe. The leak detection gas is halogen gas, helium, hydrogen or other detectable media.
Step S6: and detecting the leak detection gas in the leak detection box, wherein the leak detection gas in the workpiece to be detected and the outside of the workpiece to be detected can be more quickly leaked to the outside of the workpiece to be detected due to pressure difference if leak holes exist in the workpiece to be detected, so that the detection efficiency is improved. Preferably, the concentration of the leak detection gas of the leak detection box is detected in real time, a real-time concentration change curve of the leak detection gas of the leak detection box in a preset time period is obtained, the concentration change of the leak detection box body is observed, and the concentration change reflects the tightness of the workpiece to be detected.
The sequence of the above steps is not fixed, and the sequence of the step S1 and the step S2 may be replaced with each other.
Preferably, in the whole detection process, the pressure applied to the sealing ring is detected in real time, and the stress change curve of the sealing ring is obtained. And adjusting the extrusion force of the sealing device on the sealing ring according to the stress change curve of the sealing ring. In the process of filling the leak detection gas into the workpiece to be detected, the internal and external pressure difference of the workpiece to be detected can change, so that the stress of the sealing ring can be influenced, the pressure applied to the sealing ring is detected in real time, the magnitude of the extrusion force of the sealing device on the sealing ring is dynamically adjusted in real time, and the state of the sealing ring is kept in dynamic balance.
Preferably, in the whole detection process, the pressure inside the workpiece to be detected and the pressure inside the leak detection box are detected in real time, and the stress change curve of the workpiece to be detected is calculated. And adjusting the extrusion force of the sealing device to the sealing ring according to the stress change curve of the workpiece to be measured.
Preferably, the sealing method adjusts the magnitude of the force of the sealing device pressing the sealing ring according to the tensile strength of the opening of the workpiece to be measured. Because the tensile strength of the openings of the workpieces to be tested is different, the sealing rings or the sealing devices are different in extrusion force of the openings of the workpieces to be tested. The user calculates the critical value of the corresponding force of the sealing device in advance through detecting the tensile strength of the opening of the workpiece to be detected, and prevents the sealing ring or the sealing device from damaging the opening of the workpiece to be detected.
In the sealing method of this embodiment, utilize sealing device seals the opening of the work piece that awaits measuring, sealing device is right the sealing washer carries out extrusion deformation, makes the sealing washer with the opening of the work piece that awaits measuring is hugged closely more, has strengthened the leakproofness, moreover the sealing washer can not with the work piece that awaits measuring rubs, the surface of sealing washer is difficult to the damage, the life-span of sealing washer is longer, sealing device's life is longer. The technical defect that the loss of detection equipment is large in the existing leak detection method is overcome.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (6)
1. A method of sealing, characterized by: the sealing method is realized by adopting a sealing detection device,
the seal detection device includes: the leakage detection device comprises a leakage detection box with an accommodating space, a sealing device, an inflating device and a detection device; the accommodating space is used for accommodating a workpiece to be detected, the sealing device is arranged in the accommodating space of the leakage detection box, the output port of the inflating device is communicated with the interior of the workpiece to be detected, and the detection device is communicated with the interior of the leakage detection box;
the sealing method comprises the following steps:
placing a sealing ring at an opening of a workpiece to be measured;
placing a sealing device at the opening of the workpiece to be detected, wherein the sealing device seals the opening of the workpiece to be detected;
the sealing device comprises a sealing ring, a sealing push piece and a sealing pull piece, and when the opening of the workpiece to be detected is higher than the surface of the workpiece to be detected, the front end cover of the sealing push piece is closed to the opening of the workpiece to be detected; the sealing pulling piece is sleeved on the sealing pushing piece and the opening of the workpiece to be detected; the sealing ring is arranged between the sealing pushing piece and the sealing pulling piece, and the sealing pushing piece or the sealing pulling piece is provided with a vent pipeline;
the sealing device extrudes the sealing ring, so that the sealing ring deforms under stress and is attached to the opening of the workpiece to be measured; the sealing pushing piece and the sealing pulling piece interact with each other to enable the sealing ring to deform under stress, so that the sealing ring is more attached to the outer surface of the opening;
detecting the pressure applied to the sealing ring in real time to obtain a stress change curve of the sealing ring, and adjusting the extrusion force of the sealing device on the sealing ring according to the stress change curve of the sealing ring;
and detecting the pressure inside the workpiece to be detected and the pressure inside the leak detection box in real time, calculating a stress change curve of the workpiece to be detected, and adjusting the extrusion force of the sealing device on the sealing ring according to the stress change curve of the workpiece to be detected.
2. The sealing method according to claim 1, wherein:
and after the workpiece to be detected is placed, vacuumizing the interior of the leak detection box, and detecting the air pressure of the leak detection box in real time when the leak detection box is vacuumized to obtain a real-time air pressure change curve of the leak detection box in a preset time period.
3. The sealing method according to claim 1, wherein:
the sealing device is provided with an air duct, and the inflation device is used for inflating the leak detection gas into the workpiece to be detected through the air duct.
4. The sealing method according to claim 3, wherein:
and detecting the concentration of the leakage detection gas of the leakage detection box in real time to obtain a real-time concentration change curve of the leakage detection gas of the leakage detection box in a preset time period.
5. The sealing method according to any one of claims 3 to 4, wherein:
the leak detection gas is halogen gas, helium gas or hydrogen gas.
6. The sealing method according to claim 1, wherein:
and adjusting the extrusion force of the sealing device on the sealing ring according to the tensile strength of the opening of the workpiece to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845809.XA CN112067206B (en) | 2020-08-20 | 2020-08-20 | Sealing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010845809.XA CN112067206B (en) | 2020-08-20 | 2020-08-20 | Sealing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112067206A CN112067206A (en) | 2020-12-11 |
| CN112067206B true CN112067206B (en) | 2022-11-22 |
Family
ID=73662442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010845809.XA Active CN112067206B (en) | 2020-08-20 | 2020-08-20 | Sealing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112067206B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202210020U (en) * | 2011-09-01 | 2012-05-02 | 宁波勋辉电器有限公司 | Automobile engine control unit box body air tightness detection tool |
| US9109702B2 (en) * | 2013-03-21 | 2015-08-18 | Caterpillar Inc. | Boot seal for machine system and method |
| CN204882007U (en) * | 2015-06-26 | 2015-12-16 | 中广核工程有限公司 | Leakproofness measuring device of check valve |
| CN208537113U (en) * | 2018-07-18 | 2019-02-22 | 珠海华宇金属有限公司 | Sealing mechanism and vacuum box type helium detect test system |
| CN210426907U (en) * | 2019-09-04 | 2020-04-28 | 深圳市鑫承诺环保产业股份有限公司 | Fixed-point leak detection device |
| CN111289186A (en) * | 2020-03-01 | 2020-06-16 | 湖北湘纬新能源科技有限公司 | Helium detection device and detection method for lithium battery structural member |
-
2020
- 2020-08-20 CN CN202010845809.XA patent/CN112067206B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112067206A (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3949596A (en) | Leak test fixture and method for using same | |
| JP6129870B2 (en) | Method for detecting leaks in non-rigid specimens | |
| CN107076636B (en) | Thin film chamber with a measurement volume for a coarse leak test | |
| CN106537108A (en) | Flexible leakage test chamber that can be evacuated | |
| CN212721943U (en) | Sealing leakage detection device | |
| CN109655213A (en) | A kind of gloves gas leak detection device and its working method | |
| CN112067206B (en) | Sealing method | |
| CN207675387U (en) | single-station sealing test system | |
| JP2020085104A (en) | Seal state detection device and seal state detection method for cylinder device | |
| CN116793582A (en) | Sealing ring tightness detection method and detection tool | |
| CN111912579A (en) | Sealing leakage detection device | |
| JP2010230444A (en) | Water stop inspecting device for grommet | |
| JP2001349799A (en) | Leak detection device | |
| JP3817916B2 (en) | Leak test equipment | |
| CN210893579U (en) | Device of detectable air cooler gas tightness | |
| CN113532761B (en) | Full-automatic leakage detection system of crystal resonator | |
| CN210981691U (en) | Tightness detection device suitable for semiconductor quartz tube | |
| CN104458153A (en) | Sealing performance testing device and method | |
| CN219235142U (en) | Air tightness detection outer packing clamp | |
| US11320337B2 (en) | Method for leak testing with a foil chamber with vented measurement volume | |
| CN109489959B (en) | People's air defense superpressure exhaust valve check out test set | |
| CN208719497U (en) | A kind of explosion-proof valve for inflating spool, fast aeration detection box leakproofness | |
| CN213658192U (en) | Mechanical seal friction ring detection device | |
| JP3416005B2 (en) | Leak test device, sealing method and sealing structure | |
| CN114112229A (en) | Tightness detection device of gas turbine engine casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |