CN209979174U - Multi-station sealing cover tightness measuring device - Google Patents
Multi-station sealing cover tightness measuring device Download PDFInfo
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- CN209979174U CN209979174U CN201920738140.7U CN201920738140U CN209979174U CN 209979174 U CN209979174 U CN 209979174U CN 201920738140 U CN201920738140 U CN 201920738140U CN 209979174 U CN209979174 U CN 209979174U
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- 238000007789 sealing Methods 0.000 title claims description 42
- 238000012360 testing method Methods 0.000 claims abstract description 130
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000001737 promoting effect Effects 0.000 claims description 2
- 229920005372 Plexiglas® Polymers 0.000 claims 1
- 239000004926 polymethyl methacrylate Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model discloses a multistation closing cap leakproofness survey device, including frame, test water tank, pressure supply device, pressurization pipeline and leak detection device, the test water tank is installed on the frame, install at least one test station that is used for placing the sample bottle that awaits measuring in the test water tank, the one end of pressurization pipeline with the pressure supply device is connected, the other end of pressurization pipeline is connected with quick connector, quick connector is used for being connected with leak detection device, leak detection device is used for the bottle lid of the sample bottle that awaits measuring, install at least one test control valve and at least one test pressure gauge on the pressurization pipeline. The seal tightness measuring device has safe and reliable effects.
Description
Technical Field
The utility model relates to a packing bottle leakproofness detects technical field, especially relates to a multistation closing cap leakproofness survey device.
Background
The sealing tester is suitable for sealing tests of soft packages, plastic bottles and cans in industries such as food, pharmacy, daily chemicals and the like. The sealing process and the sealing performance of the soft package can be effectively compared and evaluated through tests, and scientific basis is provided for determining related technical requirements. The sealing performance of the test piece after dropping and pressure resistance can be tested.
The working principle of the bottle cap tightness tester is as follows: the sample is put into water and inflated to be pressurized, whether gas leaks from the sealing cover or not is detected to judge the sealing performance of the sample, and the internal pressure is increased so as to enable the internal pressure of the sample to be detected to exceed the air pressure under normal conditions, so that the sealing performance of the sealing cover of the sample to be detected is detected. If the sample is a sample with qualified sealing performance of the sealing cover, the sample can bear extra pressure without any sign of air leakage. The sample sealing cover with unqualified sealing performance can cause bubbles to emerge, and workers can easily find the phenomenon.
The existing sealing tester generally relates to power utilization control and has certain potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a but the measuring closing cap leakproofness survey device of safe and reliable multistation.
The purpose of the utility model is realized by adopting the following technical scheme:
the utility model provides a multistation closing cap leakproofness survey device, includes frame, test water tank, pressure feed arrangement, pressurization pipeline and leak detection device, the test water tank is installed on the frame, install at least one test station that is used for placing the appearance bottle that awaits measuring in the test water tank, the one end of pressurization pipeline with the pressure feed arrangement is connected, the other end of pressurization pipeline is connected with quick-plug connector, quick-plug connector is used for being connected with leak detection device, leak detection device is used for the bottle lid of the appearance bottle that awaits measuring of puncture, install at least one test control valve and at least one test manometer on the pressurization pipeline.
Further, the test station includes first test station, second test station, third test station, the pressurization pipeline include with main pressurization pipeline that pressure feed arrangement connects, respectively with first pressurization pipeline, second pressurization pipeline and the third pressurization pipeline that main pressurization pipeline connects, first test control valve and first test manometer are installed to first pressurization pipeline, second pressurization pipeline installs second test control valve and second test manometer, third pressurization pipeline installs third test control valve and third test manometer, main pressurization pipeline installs the master switch three-way valve.
Further, the main pressurization pipeline is provided with a pressure reducing valve and a flow control valve, the pressure reducing valve is connected with a pressure reducing pressure gauge, and the pressure reducing valve is provided with a safety valve.
Further, the frame is equipped with and accepts the chamber, main pressurization pipeline, first pressurization pipeline, second pressurization pipeline and third pressurization pipeline are acceptd accept the intracavity, the frame is installed and is used for with the air inlet joint that main pressurization pipeline is connected, the frame is equipped with first exhaust hole.
Further, the multi-station sealing cover tightness measuring device further comprises an explosion-proof screen and a fixing sleeve, the explosion-proof screen is arranged in the test water tank, the fixing sleeve used for fixing the sample bottle to be tested is arranged on each of the first test station, the second test station and the third test station, and the fixing sleeve is located in the explosion-proof screen. Further, leakage detection device includes the puncture head, locates puncture needle on the puncture head and locating the sealing washer of puncture head tip, the puncture head be equipped with be used for with the quick inserting groove of quick connector looks adaptation, the puncture needle is used for the puncture bottle lid that awaits measuring.
Further, the test water tank is made by the stainless steel, the test water tank is equipped with observation window, organic glass board is installed to observation window.
Furthermore, the test water tank comprises a water tank cover plate and a door lock assembly, the door lock assembly comprises a locking seat, a lock cylinder limiting seat, a lock cylinder, a bolt and an elastic element, the locking seat is arranged at the top of the water tank cover plate and is provided with a first sliding groove matched with the bolt in the vertical direction and a second sliding groove matched with the lock cylinder in the horizontal direction, the first sliding groove is communicated with the second sliding groove, one end of the bolt is movably inserted into the second sliding groove and is vertically connected with the lock cylinder, the bolt can drive the lock cylinder to horizontally move along the second sliding groove, the lock cylinder limiting seat is provided with a locking groove in the horizontal direction, the locking groove is aligned with the second sliding groove, when the water tank cover plate is used for sealing the test water tank, the lock cylinder can be inserted into the locking groove under the action of the elastic element to lock the water tank cover plate, the elastic element is used for providing elastic stress for promoting the lock cylinder to be locked in the locking groove.
Further, the water tank cover plate is provided with an air spring in an opening and closing mode, one end of the air spring is hinged to the test water tank, and the other end of the air spring is hinged to the water tank cover plate.
Further, the water tank cover plate is arranged to be of a turnover type structure or a push-open type structure.
Compared with the prior art, the beneficial effects of the utility model reside in that:
during the test, place the sample bottle that awaits measuring at the test station in the test water tank, then puncture the bottle lid of the sample bottle that awaits measuring through leak detection device, later open pressure feeding device, pressurize in the sample bottle that awaits measuring through the pressurization pipeline, in the testing process, come the pressure size through adjusting the relief pressure valve, and monitor sample test pressure size through the test manometer, adjust the pressurization speed through the flow control valve and this closing cap leakproofness measuring device simple structure, adopt mechanical pressurization structure, do not adopt the electricity to control, safe and reliable.
Drawings
Fig. 1 is a schematic view of a multi-station cap sealing tightness measuring device provided by the present invention;
fig. 2 is a second schematic view of a multi-station cap-sealing tightness measuring device according to the present invention;
fig. 3 is a third schematic view of a multi-station cap sealing tightness measuring device provided by the present invention;
fig. 4 is a cross-sectional view of a door lock assembly of a multi-station cap sealing tightness measuring device provided by the present invention;
fig. 5 is a cross-sectional view of a leak detection device of the multi-station cap sealing tightness measuring device according to the present invention.
In the figure: 1. a machine base; 2. testing the water tank; 3. a sample bottle to be tested; 4. a quick connector; 5. a first test control valve; 6. a first test pressure gauge; 7. a second test control valve; 8. a second test pressure gauge; 9. a third test control valve; 10. a third test pressure gauge; 11. a main switch three-way valve; 12. a pressure reducing valve; 13. a pressure reducing pressure gauge; 14. a safety valve; 15. an air inlet joint; 16. a first exhaust port; 17. a flow control valve; 18. fixing a sleeve; 19. an explosion-proof screen; 20. a puncture head; 21. puncturing needle; 22. a seal ring; 23. an organic glass plate; 24. a water tank cover plate; 25. a first pressurization conduit through hole; 26. a second pressurization conduit through hole; 27. a third pressurized conduit through hole; 28. a locking seat; 29. a lock cylinder; 30. a bolt; 31. a lock cylinder limiting seat; 32. an elastic element; 33. a counterweight ring; 34. a water inlet and outlet ball valve; 35. a second vent hole; 36. a water baffle; 37. and (7) a bottle cap.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "one," "another," and the like are used to distinguish similar elements, and these terms and other similar terms are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Corresponding reference numerals are used throughout the figures to indicate corresponding or corresponding elements (e.g., elements identified as "1 XX" and "2 XX" are structurally identical and functionally similar).
As shown in fig. 1-5, for the utility model provides a pair of multistation closing cap leakproofness survey device, including frame 1, test water tank 2, pressure supply device, pressurization pipeline and leak detection device, test water tank 2 installs on frame 1, install at least one test station that is used for placing the sample bottle 3 that awaits measuring in the test water tank 2, the one end of pressurization pipeline with pressure supply device connects, the other end of pressurization pipeline is connected with quick connector 4, quick connector 4 is used for being connected with leak detection device, leak detection device is used for the bottle lid 37 of the sample bottle 3 that awaits measuring of puncture, install at least one test control valve and at least one test pressure table on the pressurization pipeline.
On the basis of the structure, when sealing test is to be carried out, water is injected into the test water tank 2, the water level that the sample bottle 3 to be tested is placed into the test water tank 2 is ensured to be soaked by the bottle cap 37, then the bottle cap 37 is punctured by the leakage detection device, then the pressure supply device supplies air to the pressurization pipeline, wherein the pressure supply device can adopt compressed air or carbon dioxide to carry out inflation pressurization, the air pressure sequentially passes through the pressurization pipeline, the quick-plugging connector 4 and the leakage detection device to enter the sample bottle 3 to be tested, if the sample with qualified sealing cover sealing performance is used, extra pressure is borne, no air leakage is caused, and bubbles emerge from the position of the sample sealing cover with unqualified sealing performance. In the testing process, the pressure is adjusted by adjusting the pressure reducing valve 12, the testing pressure of the sample is monitored by the testing pressure gauge, and the pressurizing speed is adjusted by the flow control valve 17. The sealing cover tightness measuring device is simple in structure, safe and reliable, adopts a mechanical pressurizing structure and does not adopt electricity for control.
As a preferred embodiment, the test station includes a first test station, a second test station, and a third test station, the pressurizing pipeline includes a main pressurizing pipeline connected to the pressure supply device, a first pressurizing pipeline, a second pressurizing pipeline, and a third pressurizing pipeline connected to the main pressurizing pipeline, respectively, the first pressurizing pipeline is provided with a first test control valve 5 and a first test pressure gauge 6, the second pressurizing pipeline is provided with a second test control valve 7 and a second test pressure gauge 8, the third pressurizing pipeline is provided with a third test control valve 9 and a third test pressure gauge 10, and the main pressurizing pipeline is provided with a main switch three-way valve 11. The test station of this embodiment is preferably provided with three, of course, the test station can also be two, four or more test stations, and this embodiment can test 3 samples simultaneously, can improve efficiency of software testing, certainly, also can test alone. In addition, a first pressurizing pipeline through hole 25, a second pressurizing pipeline through hole 26 and a third pressurizing pipeline through hole 27 are formed in the water tank cover plate 24, the first pressurizing pipeline is inserted into the test water tank 2 from the first pressurizing pipeline through hole 25, the second pressurizing pipeline is inserted into the test water tank 2 from the second pressurizing pipeline through hole 26, the third pressurizing pipeline is inserted into the test water tank 2 from the third pressurizing pipeline through hole 27, a second vent hole 35 is formed in the water tank cover plate 24, and a water baffle 36 is arranged below the second vent hole 35.
In a preferred embodiment, a pressure reducing valve 12 and a flow control valve 17 are installed in the main pressure pipeline, a pressure reducing gauge 13 is connected to the pressure reducing valve 12, and a safety valve 14 is installed on the pressure reducing valve 12. When the air inlet pressure is higher than the protection pressure, the safety valve 14 automatically opens to exhaust air to protect the instrument from being damaged, the pressure reducing pressure gauge 13 is installed in the air inlet, and the corresponding output pressure can be seen after the pressure is adjusted. In addition, the speed of pressurization is controlled by adjusting the flow control valve 17, and the flexibility is strong.
Specifically, the base 1 is provided with an accommodating cavity, the main pressurizing pipeline, the first pressurizing pipeline, the second pressurizing pipeline and the third pressurizing pipeline are accommodated in the accommodating cavity, the base 1 is provided with an air inlet joint 15 connected with the main pressurizing pipeline, and the base 1 is provided with a first exhaust hole 16. In the present embodiment, the pressure supply device is connected to the intake joint 15, and supplies air into the main pressurizing line. The first vent hole 16 is used to vent air from the sample after the test is completed. In addition, the base 1 is also provided with a water inlet and outlet ball valve 34, the water inlet and outlet ball valve 34 is used for being connected with a water supply device, and the water inlet and outlet ball valve 34 is connected with the test water tank 2 through a pipeline.
As a preferred embodiment, the multi-station cap sealing tightness measuring device further comprises an explosion-proof screen 19 and a fixing sleeve 18, the explosion-proof screen 19 is arranged in the test water tank 2, the fixing sleeves 18 for fixing the sample bottles 3 to be measured are respectively arranged on the first test station, the second test station and the third test station, and the fixing sleeves 18 are located in the explosion-proof screen 19. In this embodiment, the sample bottle 3 that awaits measuring can put the test in the test water tank 2 by whole bottle, need not the cutting method and downcuts the bottle lid 37 alone, and three fixed cover 18 is installed to test water tank 2 bottom, can make things convenient for the sample location, for preventing sample pressurization back downwards wafts under the buoyancy, overlaps the sample bottleneck department with counter weight ring 33 before the test.
In a preferred embodiment, the leakage detecting device includes a puncture head 20, a puncture needle 21 disposed on the puncture head 20, and a sealing ring 22 disposed at an end of the puncture head 20, the puncture head 20 is provided with a quick-connect socket adapted to the quick-connect plug 4, and the puncture needle 21 is used for puncturing a bottle cap 37 to be tested. In this embodiment, a sample is punctured by a puncture needle 21, a puncture head 20 is screwed inwards to be in meshed contact with the sample through a rear end thread to press an end sealing ring 22 to realize sealing, and then gas is added to the sample through an inner hole of the puncture needle 21 to perform leakage testing. The bottle cap 37 of the present embodiment is clamped by a clamp, which is preferably a horseshoe-shaped structure.
As a preferred embodiment, the test water tank 2 is made of stainless steel, and the test water tank 2 is provided with an observation window, which is mounted with an organic glass plate 23. Test water tank 2 adopts the stainless steel to make, improves test water tank 2's intensity, increases organic glass board 23, can make things convenient for the operator to observe the 2 inside conditions of test water tank, can monitor the inside condition at any time to increase foraminiferous screen cloth stainless steel cover in addition before organic glass board 23, can effectively protect operator's safety.
As a preferred embodiment, the test water tank 2 includes a water tank cover plate 24 and a door lock assembly, the door lock assembly includes a locking seat 28, a lock cylinder limiting seat 31, a lock cylinder 29, a bolt 30 and an elastic element 32, the locking seat 28 is provided with a first sliding groove along a vertical direction for adapting to the bolt 30 and a second sliding groove along a horizontal direction for adapting to the lock cylinder 29, the first sliding groove is communicated with the second sliding groove, one end of the bolt 30 is movably inserted into the second sliding groove and is vertically connected with the lock cylinder 29, the bolt 30 can drive the lock cylinder 29 to horizontally move along the second sliding groove, the lock cylinder limiting seat 31 is provided with a locking groove along a horizontal direction, the locking groove is aligned with the second sliding groove, when the water tank cover plate 24 covers the test water tank 2, the lock cylinder 29 can be inserted into the locking groove to lock the water tank cover plate 24, the elastic element 32 is used to provide elastic stress that urges the lock cylinder 29 to be locked in the locking groove. In this embodiment, the water tank cover plate 24 is hinged on one side of the test water tank 2, the lock cylinder limiting seat 31 is installed on the other side of the test water tank 2, after the water tank cover plate 24 is covered, the bolt 30 drives the lock cylinder 29 to move towards the direction of the locking groove under the action of the elastic element 32, and then the water tank cover plate 24 is locked on the lock cylinder limiting seat 31, so that the water tank cover plate 24 cannot be normally opened in the test process, and the test safety can be further improved.
In a preferred embodiment, the water tank cover plate 24 is provided with a gas spring in an opening and closing manner, one end of the gas spring is hinged to the test water tank 2, and the other end of the gas spring is hinged to the water tank cover plate 24. By arranging the gas spring, the water tank cover plate 24 can be opened or closed without the aid of external power, so that energy can be saved.
Specifically, the water tank cover plate 24 is provided in a flip-type structure or in a push-open type structure. Of course, the opening mode of the tank cover plate 24 may be configured in other structures, and is not limited in particular.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. The utility model provides a multistation closing cap leakproofness survey device, a serial communication port, including frame, test water tank, pressure supply device, pressurization pipeline and leak detection device, the test water tank is installed on the frame, install at least one test station that is used for placing the sample bottle that awaits measuring in the test water tank, the one end of pressurization pipeline with the pressure supply device is connected, the other end of pressurization pipeline is connected with quick connector, quick connector is used for being connected with leak detection device, leak detection device is used for the bottle lid of the sample bottle that awaits measuring, install at least one test control valve and at least one test manometer on the pressurization pipeline.
2. A multi-station cap sealing tightness testing device according to claim 1, wherein the testing stations comprise a first testing station, a second testing station and a third testing station, the pressurizing pipes comprise a main pressurizing pipe connected with the pressure supply device, and a first pressurizing pipe, a second pressurizing pipe and a third pressurizing pipe respectively connected with the main pressurizing pipe, the first pressurizing pipe is provided with a first testing control valve and a first testing pressure gauge, the second pressurizing pipe is provided with a second testing control valve and a second testing pressure gauge, the third pressurizing pipe is provided with a third testing control valve and a third testing pressure gauge, and the main pressurizing pipe is provided with a main on-off three-way valve.
3. A multi-station cap sealing tightness measuring device according to claim 2, wherein the main pressurizing pipeline is provided with a pressure reducing valve and a flow control valve, the pressure reducing valve is connected with a pressure reducing gauge, and the pressure reducing valve is provided with a safety valve.
4. A multi-station seal cover tightness testing device according to claim 3, wherein said machine base is provided with a housing chamber, said main pressurized pipe, said first pressurized pipe, said second pressurized pipe and said third pressurized pipe are housed in said housing chamber, said machine base is provided with an air inlet joint for connecting with said main pressurized pipe, said machine base is provided with a first air outlet.
5. A multi-station cap sealing tightness measuring device according to claim 2, wherein said multi-station cap sealing tightness measuring device further comprises an explosion-proof screen and a fixing sleeve, said explosion-proof screen is disposed in said test water tank, said fixing sleeves for fixing the sample bottle to be measured are disposed at said first test station, said second test station and said third test station, respectively, and said fixing sleeves are disposed in said explosion-proof screen.
6. The multi-station cap sealing tightness testing device according to claim 1, wherein the leakage testing device comprises a puncture head, a puncture needle disposed on the puncture head, and a sealing ring disposed at an end of the puncture head, the puncture head is provided with a quick-connection groove adapted to the quick-connection plug, and the puncture needle is used for puncturing a bottle cap to be tested.
7. A multi-station cap seal tightness measuring device according to claim 1, wherein the test water tank is made of stainless steel, and the test water tank is provided with an observation window, and the observation window is provided with a plexiglas plate.
8. The multi-station cover closing tightness testing device according to claim 1, wherein the testing water tank comprises a water tank cover plate and a door lock assembly, the door lock assembly comprises a locking seat, a lock cylinder limiting seat, a lock cylinder, a bolt and an elastic element, the locking seat is arranged at the top of the water tank cover plate, the locking seat is provided with a first sliding groove matched with the bolt in the vertical direction and a second sliding groove matched with the lock cylinder in the horizontal direction, the first sliding groove is communicated with the second sliding groove, one end of the bolt is movably inserted into the second sliding groove and is vertically connected with the lock cylinder, the bolt can drive the lock cylinder to horizontally move along the second sliding groove, the lock cylinder limiting seat is provided with a locking groove in the horizontal direction, the locking groove is aligned with the second sliding groove, when the water tank cover plate closes the testing water tank, the lock cylinder can be inserted into the locking groove under the action of an elastic element to lock the water tank cover plate, and the elastic element is used for providing elastic stress for promoting the lock cylinder to be locked in the locking groove.
9. The multi-station cover sealing tightness measuring device according to claim 8, wherein the water tank cover plate is provided with a gas spring in an opening and closing manner, one end of the gas spring is hinged with the test water tank, and the other end of the gas spring is hinged with the water tank cover plate.
10. A multi-station cover-sealing tightness measuring device according to claim 8, wherein the cover plate of the water tank is arranged in a flip-type structure or in a push-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738140.7U CN209979174U (en) | 2019-05-21 | 2019-05-21 | Multi-station sealing cover tightness measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738140.7U CN209979174U (en) | 2019-05-21 | 2019-05-21 | Multi-station sealing cover tightness measuring device |
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| CN209979174U true CN209979174U (en) | 2020-01-21 |
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| CN201920738140.7U Active CN209979174U (en) | 2019-05-21 | 2019-05-21 | Multi-station sealing cover tightness measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118032212A (en) * | 2024-04-11 | 2024-05-14 | 吴江天吴特种安全阀有限公司 | Multi-station safety valve air tightness detection device and method with limiting structure |
-
2019
- 2019-05-21 CN CN201920738140.7U patent/CN209979174U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118032212A (en) * | 2024-04-11 | 2024-05-14 | 吴江天吴特种安全阀有限公司 | Multi-station safety valve air tightness detection device and method with limiting structure |
| CN118032212B (en) * | 2024-04-11 | 2024-06-11 | 吴江天吴特种安全阀有限公司 | Multi-station safety valve air tightness detection device and method with limiting structure |
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