CN220322642U - Helium detection device of diaphragm type energy accumulator - Google Patents
Helium detection device of diaphragm type energy accumulator Download PDFInfo
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- CN220322642U CN220322642U CN202321784897.2U CN202321784897U CN220322642U CN 220322642 U CN220322642 U CN 220322642U CN 202321784897 U CN202321784897 U CN 202321784897U CN 220322642 U CN220322642 U CN 220322642U
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- diaphragm type
- vacuum cover
- base
- lifting frame
- helium
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 30
- 239000001307 helium Substances 0.000 title claims abstract description 30
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a helium detection device of a diaphragm type energy accumulator, comprising: a base, a sealing mechanism, and a leak detector; the base is provided with an filling hole, the sealing mechanism comprises a lifting frame, a pressing driving assembly, a vacuum cover and a pressing plate, the lifting frame is arranged above the filling hole in a lifting manner through the pressing driving assembly, the vacuum cover is movably arranged at the bottom of the lifting frame, an elastic piece is arranged between the vacuum cover and the lifting frame, and the pressing plate is positioned in the vacuum cover; after the lifting frame is driven to descend by the pressing driving assembly, the vacuum cover is propped against the base, a leakage detection cavity is formed between the vacuum cover and the base, and the bottom of the pressing plate is propped against the diaphragm type energy accumulator. The helium detection device of the diaphragm type energy accumulator disclosed by the utility model is used for detecting the leakage of the diaphragm type energy accumulator by a helium leakage detection method, has strong penetrability of helium, can pass through a tiny leakage point, effectively improves the accuracy of the leakage detection, and has high leakage detection efficiency.
Description
Technical Field
The utility model relates to the technical field of vacuum leak detection, in particular to a helium detection device of a diaphragm type energy accumulator.
Background
The diaphragm type accumulator is a common hydraulic element and has the main function of storing pressure energy in a hydraulic system so that the system can release energy rapidly when needed, and the working efficiency is higher.
At present, a leak detection mode of a diaphragm type energy accumulator of a new energy automobile generally adopts a water test mode, a cavity of the diaphragm type energy accumulator is filled with air with certain pressure and then soaked in water, whether the cavity of the diaphragm type energy accumulator has leakage or not is judged by observing whether bubbles exist in the water, and because the water cannot pass through some fine leakage points, the water test mode has the possibility of false leak detection, and the water test method is long in time consumption and low in leak detection efficiency.
Disclosure of Invention
The utility model aims to overcome the defects and shortcomings in the prior art and provides a helium detection device of a diaphragm type energy accumulator.
One embodiment of the present utility model provides a helium test apparatus for a diaphragm type accumulator, comprising: a base, a sealing mechanism, and a leak detector;
the base is provided with a filling hole communicated with the diaphragm type energy accumulator, the sealing mechanism is arranged on the base and comprises a lifting frame, a pressing driving assembly, a vacuum cover and a pressing plate, the lifting frame is arranged above the filling hole in a lifting manner through the pressing driving assembly, the vacuum cover is movably arranged at the bottom of the lifting frame, an elastic piece is arranged between the vacuum cover and the lifting frame, and the pressing plate is connected with the lifting frame and is positioned in the vacuum cover;
after the lifting frame is driven to descend by the downward-pressing driving assembly, the vacuum cover is propped against the base, a leakage detection cavity is formed between the vacuum cover and the base, and the bottom of the pressing plate is propped against the diaphragm type energy accumulator;
the leak detector is in communication with the leak detection chamber.
Compared with the prior art, the helium detection device of the diaphragm type energy accumulator disclosed by the utility model is used for detecting the leakage of the diaphragm type energy accumulator by a helium leakage detection method, has strong penetrability of helium, can pass through a tiny leakage point, effectively improves the accuracy of the leakage detection, and has high leakage detection efficiency.
In some alternative embodiments, the bottom of the pressure plate is provided with an annular pressing part, the annular pressing part is matched with the shape of the diaphragm type energy accumulator, and the pressure plate is pressed against the edge of the diaphragm type energy accumulator through the annular pressing part.
In some optional embodiments, the pressure plate is provided with a plurality of sampling ports, when the pressure plate is pressed against the diaphragm type energy accumulator by the annular pressing part, a cavity is formed between the pressure plate and the diaphragm type energy accumulator, and the leak detection cavity is communicated with the cavity by the sampling ports.
In some optional embodiments, the lifting frame is provided with a guide pillar, the guide pillar penetrates through the vacuum cover and then stretches into the vacuum cover, the vacuum cover is in sliding fit with the guide pillar, and the pressing plate is arranged at the bottom of the guide pillar.
In some alternative embodiments, a plurality of elastic pieces are arranged between the lifting frame and the vacuum cover, and the elastic pieces are uniformly arranged around the guide post.
In some alternative embodiments, the vacuum cover is provided with a guide rod, the guide rod is in sliding fit with the lifting frame, and the elastic piece is a spring, and the spring is sleeved on the outer side of the guide rod.
In some alternative embodiments, a sealing gasket is provided at the bottom of the vacuum enclosure or at the top of the base, the sealing gasket being located between the vacuum enclosure and the base and disposed around the leak detection chamber when the vacuum enclosure is pressed against the base.
In some alternative embodiments, the push-down drive assembly is a pneumatic, hydraulic, or electric cylinder.
In some alternative embodiments, the base is provided with a top plate and a plurality of support columns, the top plate is disposed above the base, the plurality of support columns are uniformly disposed between the top plate and the base, and the pressing-down driving assembly is disposed on the top plate.
In order that the utility model may be more clearly understood, specific embodiments thereof will be described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a helium test setup of a diaphragm type accumulator according to an embodiment of the present utility model;
FIG. 2 is an exploded view of a diaphragm accumulator and a base of one embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a helium test setup of a diaphragm type accumulator according to one embodiment of the present utility model;
fig. 4 is an enlarged view at a shown in fig. 3;
fig. 5 is a schematic structural view of a platen according to an embodiment of the present utility model.
Reference numerals illustrate:
10. a base; 11. a filling hole; 12. a sealing gasket; 13. a top plate; 14. a support column; 21. a lifting frame; 211. a guide post; 22. pressing down the driving assembly; 23. a vacuum cover; 231. a guide rod; 24. a pressing plate; 241. an annular pressing part; 242. a sampling port; 25. an elastic member; 30. a leak detection cavity; 31. air holes; 40. a diaphragm accumulator; 41. a cavity.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "plurality" is 2 or more, and the meaning of "several" is 1 or more. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated unless otherwise indicated.
Referring to fig. 1, a schematic structure diagram of a helium testing apparatus of a diaphragm type energy accumulator according to an embodiment of the present utility model includes: base 10, sealing mechanism and leak detector (not shown).
Referring to fig. 2 to 4, fig. 2 is an exploded view of a diaphragm accumulator and a base according to an embodiment of the present utility model, fig. 3 is a cross-sectional view of a helium test apparatus of the diaphragm accumulator according to an embodiment of the present utility model, fig. 4 is an enlarged view of a portion a shown in fig. 3, a filling hole 11 for communicating with the diaphragm accumulator 40 is provided in the base 10, a sealing mechanism is provided in the base 10, which includes a lift 21, a push-down driving assembly 22, a vacuum cover 23 and a pressing plate 24, the lift 21 is liftably provided above the filling hole 11 by the push-down driving assembly 22, the vacuum cover 23 is movably provided at a bottom of the lift 21, an elastic member 25 is provided between the vacuum cover 23 and the lift 21, and the pressing plate 24 is connected to the lift 21 and is located in the vacuum cover 23. After the lifting frame 21 is driven to descend by the pressing driving assembly 22, the vacuum cover 23 is abutted against the base 10, a leak detection cavity 30 is formed between the vacuum cover and the base 10, the bottom of the pressing plate 24 is abutted against the diaphragm type energy accumulator 40, and the leak detector is communicated with the leak detection cavity 30. The vacuum cover 23 or the base 10 should be provided with an interface for connection to a vacuum generator, in this embodiment the base 10 is provided with an interface for connection to a vacuum generator, and the leak detector is connected to the air hole 31 in the base 10.
During leak detection, the diaphragm type accumulator 40 is placed on the base 10, the filling hole 11 is communicated with a cavity of the diaphragm type accumulator 40, then the driving assembly 22 is pressed down to drive the lifting frame 21 to descend, the vacuum cover 23 is pressed on the base 10, the diaphragm type accumulator 40 is located in the leak detection cavity 30, then the lifting frame 21 continues to descend, the pressing plate 24 presses the diaphragm type accumulator 40 on the base 10, the elastic piece 25 between the vacuum cover 23 and the elastic piece 25 is pressed to generate elastic deformation, and the elastic force of the elastic piece 25 pushes the vacuum cover 23 against the base 10, so that the vacuum cover 23 is tightly attached to the base 10, and the leak detection cavity 30 is sealed. The leak detection cavity 30 is vacuumized through the vacuum generator, helium is filled into the cavity of the diaphragm type energy accumulator 40 through the filling hole 11, and if the cavity of the diaphragm type energy accumulator 40 has a leakage point of external leakage, the helium can leak into the leak detection cavity 30 and be detected by the leak detector, so that the diaphragm type energy accumulator 40 is judged to be unqualified, and compared with a water test method, the method is more accurate and has higher detection efficiency.
Referring to fig. 5, which is a schematic structural diagram of a pressure plate according to an embodiment of the present utility model, in some alternative embodiments, an annular pressing portion 241 is disposed at a bottom of the pressure plate 24, and the annular pressing portion 241 matches a shape of the diaphragm accumulator 40, and the pressure plate 24 is pressed against an edge of the diaphragm accumulator 40 by the annular pressing portion 241, so as to stably press the diaphragm accumulator 40.
In some alternative embodiments, a plurality of sampling ports 242 are arranged on the pressing plate 24, when the pressing plate 24 is propped against the diaphragm type energy accumulator 40 through the annular pressing part 241, a cavity 41 is formed between the pressing plate 24 and the diaphragm type energy accumulator 40, the leak detection cavity 30 is communicated with the cavity 41 through the sampling ports 242, and helium leaked between the pressing plate 24 and the diaphragm type energy accumulator 40 can flow into the leak detection cavity 30 from the cavity 41, so that the situation that the helium leaked between the pressing plate 24 and the diaphragm type energy accumulator 40 cannot flow into the leak detection cavity 30 is avoided, and the situation that the leak detector cannot catch the leaked helium is avoided.
In some alternative embodiments, the lifting frame 21 is provided with a guide post 211, the guide post 211 passes through the vacuum cover 23 and then extends into the vacuum cover 23, the vacuum cover 23 is in sliding fit with the guide post 211, so that the vacuum cover 23 moves more stably, and the pressing plate 24 is arranged at the bottom of the guide post 211.
In some alternative embodiments, a plurality of elastic members 25 are disposed between the lifting frame 21 and the vacuum cover 23, the plurality of elastic members 25 are uniformly arranged around the guide post 211, and the plurality of elastic members 25 uniformly press against the vacuum cover 23, so that the vacuum cover 23 is stably pressed on the base 10, and the leak detection cavity 30 is improved in tightness.
In order to facilitate positioning of the elastic member 25 and improve stability of the position of the vacuum cover 23 relative to the lifting frame 21, in some alternative embodiments, a guide rod 231 is provided on the vacuum cover 23, the guide rod 231 is slidably matched with the lifting frame 21, and the elastic member 25 is a spring and is sleeved outside the guide rod 231. In this application, the top of guide arm 231 passes behind the crane 21 and extends to the top of crane 21, and the top of guide arm 231 is provided with the stopper, stopper and the spacing cooperation of crane 21.
In some alternative embodiments, a sealing gasket 12 is provided at the bottom of the vacuum enclosure 23 or at the top of the base 10, and when the vacuum enclosure 23 is pressed against the base 10, the sealing gasket 12 is located between the vacuum enclosure 23 and the base 10 and is disposed around the leak detection chamber 30, and the sealing gasket 12 may improve the leak detection chamber 30. The sealing gasket 12 may be a rubber gasket, a silicone gasket, or the like.
The push-down drive assembly 22 may be of a suitable design depending on the actual needs, and in some alternative embodiments, the push-down drive assembly 22 is a pneumatic, hydraulic or electric cylinder.
To facilitate installation of the hold-down drive assembly 22, in some alternative embodiments, the base 10 is provided with a top plate 13 and a plurality of support columns 14, the top plate 13 being disposed above the base 10, the plurality of support columns 14 being uniformly disposed between the top plate 13 and the base 10, the hold-down drive assembly 22 being disposed on the top plate 13, and the lift frame 21 and the vacuum enclosure 23 being disposed between the top plate 13 and the base 10.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A helium testing apparatus for a diaphragm type accumulator, comprising: a base, a sealing mechanism, and a leak detector;
the base is provided with a filling hole communicated with the diaphragm type energy accumulator, the sealing mechanism is arranged on the base and comprises a lifting frame, a pressing driving assembly, a vacuum cover and a pressing plate, the lifting frame is arranged above the filling hole in a lifting manner through the pressing driving assembly, the vacuum cover is movably arranged at the bottom of the lifting frame, an elastic piece is arranged between the vacuum cover and the lifting frame, and the pressing plate is connected with the lifting frame and is positioned in the vacuum cover;
after the lifting frame is driven to descend by the downward-pressing driving assembly, the vacuum cover is propped against the base, a leakage detection cavity is formed between the vacuum cover and the base, and the bottom of the pressing plate is propped against the diaphragm type energy accumulator;
the leak detector is in communication with the leak detection chamber.
2. The helium testing apparatus of a diaphragm type accumulator of claim 1, wherein: the bottom of clamp plate is provided with annular clamping part, annular clamping part and diaphragm type energy storage's shape phase-match, the clamp plate passes through annular clamping part supports the edge of pressing in diaphragm type energy storage.
3. The helium testing apparatus of claim 2, wherein: the pressure plate is provided with a plurality of sampling ports, when the pressure plate is propped against the diaphragm type energy accumulator through the annular pressing part, a cavity is formed between the pressure plate and the diaphragm type energy accumulator, and the leak detection cavity is communicated with the cavity through the sampling ports.
4. The helium testing apparatus of a diaphragm type accumulator of claim 1, wherein: the lifting frame is provided with a guide pillar, the guide pillar penetrates through the vacuum cover and then stretches into the vacuum cover, the vacuum cover is in sliding fit with the guide pillar, and the pressing plate is arranged at the bottom of the guide pillar.
5. The helium testing device of a diaphragm type accumulator of claim 4, wherein: a plurality of elastic pieces are arranged between the lifting frame and the vacuum cover and uniformly arranged around the guide posts.
6. The helium testing apparatus of a diaphragm type accumulator of claim 1, wherein: the vacuum cover is provided with a guide rod which is in sliding fit with the lifting frame, and the elastic piece is a spring which is sleeved on the outer side of the guide rod.
7. A helium test unit for a diaphragm type accumulator according to any one of claims 1 to 6, wherein: the bottom of the vacuum cover or the top of the base is provided with a sealing gasket, and when the vacuum cover is propped against the base, the sealing gasket is positioned between the vacuum cover and the base and surrounds the leak detection cavity.
8. A helium test unit for a diaphragm type accumulator according to any one of claims 1 to 6, wherein: the pushing driving assembly is an air cylinder, a hydraulic cylinder or an electric cylinder.
9. A helium test unit for a diaphragm type accumulator according to any one of claims 1 to 6, wherein: the base is provided with a top plate and a plurality of support columns, the top plate is arranged above the base, the support columns are uniformly arranged between the top plate and the base, and the pressing driving assembly is arranged on the top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321784897.2U CN220322642U (en) | 2023-07-07 | 2023-07-07 | Helium detection device of diaphragm type energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321784897.2U CN220322642U (en) | 2023-07-07 | 2023-07-07 | Helium detection device of diaphragm type energy accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220322642U true CN220322642U (en) | 2024-01-09 |
Family
ID=89419111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321784897.2U Active CN220322642U (en) | 2023-07-07 | 2023-07-07 | Helium detection device of diaphragm type energy accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220322642U (en) |
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2023
- 2023-07-07 CN CN202321784897.2U patent/CN220322642U/en active Active
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