Pressure relief airtight protection device for test box
Through the combined structure of sleeve, elastic parts, sliders and pressure parts, the problem of reduced sealing of the pressure relief door of the test chamber is solved, and the sealing and maintenance costs are reduced, ensuring the safety and reliability of the test chamber.
Patent Information
- Application Number
- CN202421738175.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In the clamping structure of the existing test chamber pressure relief door, spring aging leads to a decrease in sealing, high maintenance and cost, and difficult maintenance.
The combined structure of sleeve, elastic member, slider and pressure supplicator is adopted. Through the adjustable spacing between the pressure supplicator and slide, the elastic member is always tightly compressed, maintains the sealing of the pressure relief door, and achieves rapid pressure relief through the limiting assembly and the slot.
Effectively maintain the sealing of the pressure relief door, reduce maintenance difficulty and cost, and ensure the safety and reliability of the test chamber.
Smart Images
Figure CN223092002U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of test chamber testing, in particular to a pressure relief airtight protection device for a test chamber. Background Art
[0002] Before leaving the factory, batteries need to undergo various performance tests. Currently, in this field, a test chamber is generally used to simulate the actual use environment of the battery to fully test the performance of the battery in different extreme environments. During the battery testing process, there is a possibility of explosion. In order to relieve the pressure of the test chamber during the battery explosion, a pressure relief window is generally provided on the side wall of the test chamber, and a pressure relief door is installed on the pressure relief window to ensure the sealing performance of the test chamber test cavity. The above-mentioned pressure relief door is connected to the outer wall of the test chamber by a clamping method. In the existing clamping structure of the pressure relief door, a spring is embedded so that the spring can exert pressure on the clamping part at the end, thereby ensuring that the pressure relief door can be connected to the outer wall of the test chamber and enabling the pressure relief door to open instantly at the moment of battery explosion to achieve pressure relief. However, after long-term use of the above-mentioned clamping structure, the spring will age, resulting in a decrease in elastic stress, thereby affecting the sealing performance of the pressure relief door. Moreover, in the above-mentioned clamping structure, the spring is embedded in a tube with a closed end. After the spring ages, it is difficult to repair, and the entire buckle assembly needs to be disassembled, resulting in a high cost. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a pressure relief airtight protection device for a test chamber to ensure the sealing performance of the pressure relief door and reduce the maintenance difficulty and cost.
[0004] In order to solve the above technical problem, the technical solution adopted by the utility model is as follows:
[0005] A pressure relief airtight protection device for a test chamber, wherein a pressure relief window is provided on the side wall of the test chamber, including a pressure relief door, a clamping assembly, and a limiting assembly; the pressure relief door can cover the pressure relief window, and the limiting assembly is arranged on the side wall of the test chamber; the clamping assembly is installed on the edge of the pressure relief door, and the clamping assembly and the limiting assembly can be separated or clamped with each other; the clamping assembly includes a sleeve, an elastic member, a sliding member, and a pressing member; both ends of the sleeve in the axial direction are interconnected; in the axial direction of the sleeve, the sliding member, the elastic member, and the pressing member are sequentially embedded in the sleeve along the direction gradually away from the limiting assembly; the pressing member abuts against the elastic member, and the distance between the pressing member and the sliding member is adjustable; the sliding member can be clamped or separated from the limiting assembly.
[0006] Further, the pressing member is threadedly connected to the sleeve.
[0007] Further, one end of the pressing member away from the sliding member has a limiting end cap, and the limiting end cap can be pressed against the end face of the sleeve.
[0008] Further, the sliding member includes a limiting ring and a ball;
[0009] The limiting ring is arranged circumferentially around the ball, and the limiting ring can be pressed against one end of the inner wall of the sleeve away from the pressing member.
[0010] Further, in the axial direction of the sleeve, the distance between the limiting ring and the end of the ball away from the pressing member is 0.6 to 0.9 times the diameter of the ball.
[0011] Further, one end of the limiting component facing the clamping component is provided with a clamping groove matching the sliding member.
[0012] Further, the clamping groove is semicircular.
[0013] Further, when the sliding member is clamped with the limiting component, the distance between the end face of the sleeve facing the limiting component and the end face of the limiting component facing the sleeve is 1 to 5 mm.
[0014] The beneficial effects of the present utility model are as follows: By arranging a pressing member to press the elastic member and the sliding member, the elastic member and the sliding member are always kept in a tightly connected relationship with the limiting component, thereby ensuring the sealing performance of the pressure relief door. And since the distance between the pressing member and the sliding member is adjustable, the elastic member can always be tightly compressed between the pressing member and the sliding member, ensuring the connection tightness between the clamping component and the limiting component, and thus ensuring that the pressure relief door is always connected to the pressure relief window. Even if the elastic potential energy of the elastic member decreases, the distance between the pressing member and the sliding member can be adjusted to keep the sliding member pressed against the limiting component, ensuring the sealing performance of the pressure relief door. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural view of the test chamber in the present utility model Figure 1 ;
[0016] Figure 2 is a schematic structural view of the test chamber in the present utility model Figure 2 ;
[0017] Figure 3 is a schematic structural view of the clamping component and the limiting component in the present utility model.
[0018] Description of the reference numerals:
[0019] 1. Test chamber; 11. Pressure relief window; 12. Pressure relief door;
[0020] 2. Snap - connection assembly; 21. Sleeve; 22. Elastic member; 23. Sliding member; 231. Limiting ring; 232. Ball; 233. Pressing plane; 24. Pressing member; 241. Limiting end cap
[0021] 3. Limiting assembly; 31. Card slot Detailed implementation mode
[0022] To describe the technical content, achieved objectives and effects of the present utility model in detail, the following is described in conjunction with the implementation modes and with reference to the accompanying drawings
[0023] Please refer to Figures 1-3 , a pressure - relief airtight protection device for a test chamber 1. A pressure - relief window 11 is provided on the side wall of the test chamber 1. It includes a pressure - relief door 12, a snap - connection assembly 2 and a limiting assembly 3; the pressure - relief door 12 is hinged to the outer wall of the test chamber 1, the pressure - relief door 12 can cover the pressure - relief window 11, and the limiting assembly 3 is arranged on the side wall of the test chamber 1; the snap - connection assembly 2 is installed on the edge of the pressure - relief door 12, and the snap - connection assembly 2 and the limiting assembly 3 can be separated from each other or snap - connected to each other; the snap - connection assembly 2 includes a sleeve 21, an elastic member 22, a sliding member 23 and a pressing member 24; both ends of the sleeve 21 in the axial direction communicate with each other; in the axial direction of the sleeve 21, the sliding member 23, the elastic member 22 and the pressing member 24 are sequentially embedded in the sleeve 21 along the direction gradually away from the limiting assembly 3; the pressing member 24 abuts against the elastic member 22, and the distance between the pressing member 24 and the sliding member 23 is adjustable; the sliding member 23 can be snap - connected to or separated from the limiting assembly 3
[0024] It can be understood that by setting the pressing member 24 to press the elastic member 22 and the sliding member 23, the elastic member 22 and the sliding member 23 are always kept in a tightly - connected relationship with the limiting assembly 3, thereby ensuring the airtightness of the pressure - relief door 12. And because the distance between the pressing member 24 and the sliding member 23 is adjustable, the elastic member 22 can always be tightly compressed between the pressing member 24 and the sliding member 23, ensuring the connection tightness between the snap - connection assembly 2 and the limiting assembly 3, and thus ensuring that the pressure - relief door 12 is always connected to the pressure - relief window 11. Even if the elastic potential energy of the elastic member 22 decreases, the distance between the pressing member 24 and the sliding member 23 can be adjusted so that the sliding member 23 abuts against the limiting assembly 3, ensuring the airtightness of the pressure - relief door 12
[0025] In some embodiments, the pressing member 24 is threadedly connected to the sleeve 21, which can more precisely control the distance between the pressing member 24 and the sliding member 23, reduce the adjustment difficulty, and in addition, can also improve the connection tightness between the pressing member 24 and the sleeve 21
[0026] In some embodiments, one end of the pressing member 24 away from the sliding member 23 has a limiting end cap 241. The limiting end cap 241 can abut against the end face of the sleeve 21. The setting of the limiting end cap 241 is used to limit the pressing member 24. When the limiting end cap 241 moves to the position where it abuts against the end face of the sleeve 21 due to the decreased elasticity of the elastic member 22, the distance between the pressing member 24 and the sliding member 23 cannot be further reduced. If the sealing performance of the pressure relief door 12 cannot be guaranteed in this state, the elastic member 22 needs to be replaced. Therefore, the settings of the pressing member 24 and the limiting end cap 241 can also be used to detect the service life of the elastic member 22.
[0027] In some embodiments, the sliding member 23 includes a limiting ring 231 and a ball 232. The limiting ring 231 is arranged around the circumference of the ball 232, and the limiting ring 231 can abut against one end of the inner wall of the sleeve 21 away from the pressing member 24. Specifically, the ball 232 is an incomplete sphere, and the position of the ball 232 where the limiting ring 231 is arranged has an end face, and this end face is flush with the side of the limiting ring 231 facing the pressing member 24 to form a pressing plane 233, and the elastic member 22 abuts against the pressing plane 233.
[0028] In some embodiments, in the axial direction of the sleeve 21, the distance between the limiting ring 231 and the end of the ball 232 away from the pressing member 24 is 0.6 to 0.9 times the diameter of the ball 232. Preferably, the distance between the limiting ring 231 and the end of the ball 232 away from the pressing member 24 is 0.6, 0.7, 0.8 or 0.9 times the diameter of the ball 232. When the ratio of the distance between the limiting ring 231 and the end of the ball 232 away from the pressing member 24 to the diameter of the ball 232 is less than 0.5, the portion of the ball 232 protruding outside the sleeve 21 is too small, resulting in insufficient clamping depth between the ball 232 and the limiting component 3, and it is easy to open the pressure relief door 12 during the test of the test chamber 1, that is, the sealing performance of the pressure relief door 12 is not good.
[0029] In some embodiments, the limiting component 3 is provided with a slot 31 matching the sliding member 23 at one end facing the clamping component 2. Preferably, the slot 31 is semicircular. The setting of the slot 31 is used to ensure the connection tightness between the sliding member 23 and the limiting component 3, and on the other hand, to ensure that the pressure relief door 12 can quickly pop open to play a pressure relief role during the explosion inside the test chamber 1.
[0030] In some embodiments, when the sliding member 23 is clamped with the limiting component 3, the distance between the end face of the sleeve 21 facing the limiting component 3 and the end face of the limiting component 3 facing the sleeve 21 is 1 to 5 mm. This distance cannot be less than 1 mm to avoid direct contact between the two end faces, which affects the popping open of the pressure relief door 12. If this distance is too large, it will affect the clamping depth of the sliding member 23 and the sealing performance of the pressure relief door 12.
[0031] In some embodiments, the pressure relief door 12 is connected to the outer wall of the test box 1 near the clamping assembly 2 through a detachable protective chain to prevent the pressure relief door 12 from accidentally injuring surrounding operators when it pops open, and to prevent the pressure relief door 12 from colliding with the outer wall of the test box 1 when it opens, thereby playing a protective role.
[0032] Embodiment 1 of the present utility model is:
[0033] A pressure relief airtight protection device for a test box 1 is disclosed. A pressure relief window 11 is provided on the side wall of the test box 1. The device comprises a pressure relief door 12, a clamping assembly 2 and a limiting assembly 3. The pressure relief door 12 is hinged to the outer wall of the test box 1, and the pressure relief door 12 can be covered on the pressure relief window 11. The limiting assembly 3 is arranged on the side wall of the test box 1. The clamping assembly 2 is installed on the edge of the pressure relief door 12, and the clamping assembly 2 and the limiting assembly 3 can be separated from each other or clamped to each other. The clamping assembly 2 comprises a sleeve 21, an elastic member 22, a sliding member 23 and a pressure member 24. The two ends of the sleeve 21 are interconnected in the axial direction. In the axial direction of the sleeve 21, the sliding member 23, the elastic member 22 and the pressure member 24 are sequentially embedded in the sleeve 21 in a direction gradually away from the limiting assembly 3. The pressure member 24 is pressed against the elastic member 22, and the distance between the pressure member 24 and the sliding member 23 is adjustable. The sliding member 23 can be clamped or separated from the limiting assembly 3. Preferably, the elastic member 22 is a compression spring. Specifically, when an explosion occurs inside the test box 1, the pressure relief door 12 will be opened, at which time the sliding member 23 will be separated from the limiting assembly 3, while in other states, the sliding member 23 always remains engaged with the limiting assembly 3.
[0034] In this embodiment, the pressure member 24 is threadedly connected to the sleeve 21 , and one end of the pressure member 24 away from the sliding member 23 has a limiting end cover 241 , and the limiting end cover 241 can be pressed against the end surface of the sleeve 21 .
[0035] In this embodiment, the sliding member 23 includes a limiting ring 231 and a ball 232; the limiting ring 231 is arranged around the circumference of the ball 232, and the limiting ring 231 can press against the end of the inner wall of the sleeve 21 away from the pressure member 24. Specifically, the ball 232 is an incomplete sphere, and the position where the limiting ring 231 is arranged on the ball 232 has an end face, which is flush with the side of the limiting ring 231 facing the pressure member 24 to form a pressure plane 233, and the elastic member 22 presses against the pressure plane 233.
[0036] In this embodiment, in the axial direction of the sleeve 21 , the distance between the limiting ring 231 and the end of the ball 232 away from the pressure-applying member 24 is 0.7 of the diameter of the ball 232 .
[0037] In this embodiment, a clamping groove 31 matching the sliding member 23 is formed at one end of the limiting component 3 facing the clamping component 2. Preferably, the clamping groove 31 is semicircular.
[0038] In this embodiment, when the sliding member 23 is clamped with the limiting component 3, the distance between the end face of the sleeve 21 facing the limiting component 3 and the end face of the limiting component 3 facing the sleeve 21 is 2 mm.
[0039] In this embodiment, the pressure relief door 12 is connected to the outer wall of the test chamber 1 through a detachable protective chain at a position close to the clamping component 2.
[0040] The working principle of the present utility model is as follows:
[0041] In the initial state, the limiting end cover 241 of the pressing member 24 does not abut against the end face of the sleeve 21. As the elasticity of the elastic member 22 gradually decreases, by rotating the pressing member 24, the distance between the pressing member 24 and the rolling member is reduced, thereby pressing the elastic member 22 and the rolling member to ensure the clamping depth of the rolling member in the limiting component 3.
[0042] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the related technical fields, shall be equally included in the patent protection scope of the present utility model.
Claims
1. A pressure relief and airtight protection device for a test chamber, wherein a pressure relief window is provided on the side wall of the test chamber, characterized in that, It includes a pressure relief door, a clamping component and a limiting component; The pressure relief door can cover the pressure relief window, and the limiting component is arranged on the side wall of the test chamber; The clamping component is installed on the edge of the pressure relief door, and the clamping component and the limiting component can be separated from each other or clamped with each other; The clamping component includes a sleeve, an elastic member, a sliding member and a pressing member; Both ends of the sleeve in the axial direction are interconnected; In the axial direction of the sleeve, the sliding member, the elastic member and the pressing member are sequentially embedded in the sleeve along the direction gradually away from the limiting component; The pressing member abuts against the elastic member, and the distance between the pressing member and the sliding member is adjustable; The sliding member can be clamped with or separated from the limiting component.
2. The pressure relief and airtight protection device for the test chamber according to claim 1, characterized in that, The pressing member is threadedly connected to the sleeve.
3. The pressure relief and airtight protection device for the test chamber according to claim 1, characterized in that, One end of the pressing member away from the sliding member has a limiting end cover, and the limiting end cover can abut against the end face of the sleeve.
4. The pressure relief and airtight protection device for the test chamber according to claim 1, characterized in that The sliding member includes a limiting ring and a ball; The limiting ring is arranged around the circumference of the ball, and the limiting ring can abut against one end of the inner wall of the sleeve away from the pressing member.
5. The pressure relief and airtight protection device for the test chamber according to claim 4, characterized in that, In the axial direction of the sleeve, the distance between the limiting ring and the end of the ball away from the pressing member is 0.6 to 0.9 times the diameter of the ball.
6. The pressure relief airtight protection device for the test chamber according to claim 1, wherein One end of the limiting component facing the clamping component is provided with a card slot matching the sliding member.
7. The pressure relief and airtight protection device for the test chamber according to claim 6, wherein, The card slot is semicircular.
8. The pressure relief and airtight protection device for the test chamber according to claim 1, wherein, When the sliding member is clamped with the limiting component, the distance between the end face of the sleeve facing the limiting component and the end face of the limiting component facing the sleeve is 1 to 5 mm.