Inflation valve element, explosion-proof valve capable of detecting air tightness of box body through rapid inflation and detection method

A technology for explosion-proof valves and inflation valves, which is applied in fluid tightness testing, inflation valves, safety valves, etc. It can solve the problems of poor secondary sealing of inflation holes, low detection efficiency, and slow inflation speed, etc., to avoid Poor secondary seal, high detection efficiency and fast air intake speed

CN108533811APending Publication Date: 2018-09-14DONGGUAN PUW EPTFE MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-09-14

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Abstract

The invention discloses an inflation valve element. The inflation valve element comprises a fixing part, a compression spring, an inflation piston and a rubber seal, one end of the inflation piston isconnected to the fixing part through the compression spring, and the other end of the inflation piston is connected to the rubber seal. The inflation valve element is arranged on an explosion-proof valve, inflation is carried out from the inflation valve element, compared with a mode that inflation is carried out from an air-permeable membrane of the explosion-proof valve, the inflation valve element has the advantages that the air inlet speed is high, the used time is short, the detection efficiency is high, and in addition, the phenomena that the air-permeable membrane is damaged, and the explosion-proof valve is invalid can be avoided; and the air tightness detection inflation valve element and the explosion-proof valve are integrated into a whole, an inflation hole for air tightness detection does not need to be additionally formed in the sealed box body, after the detection is finished, the inflating piston is driven to automatically reset through the spring, the sealed state isrestored, a bolt does not need to be additionally arranged to seal the inflation hole, and therefore the risks that secondary seal is poor, and the protection grade requirement cannot be met can be avoided.
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Description

technical field

[0001] The invention relates to the technical field of explosion-proof valves, in particular to an explosion-proof valve with an inflatable valve core, a fast-inflating gas-inflated detection box body, and a detection method. Background technique

[0002] Sealed boxes, such as outdoor electrical control boxes, energy storage battery boxes, electric vehicle battery packs, etc. are the "heart" of related equipment and new energy vehicles. As the core components of control and drive, they are safe, stable and reliable It directly affects the performance and safety of equipment or new energy electric vehicles. When water enters the controller box, the insulation performance decreases, causing short circuit and control system failure. Water entering the battery pack will cause short circuit of the battery, which will cause battery explosion. In order to prevent the performance of the battery pack in the battery pack or components in the electrical control box from...

Examples

Embodiment Construction

[0036] see image 3 , the invention provides an inflatable valve core, the inflatable valve core includes a fixed part 21, a compression spring 22, an inflatable piston 23, and a rubber seal 24, and one end of the inflatable piston 23 is connected to the fixed part 21 through a compressed spring 22, and the inflated The other end of the piston 23 is connected with a rubber seal 24 .

[0037] In this embodiment, one end of the inflation piston 23 is further provided with a guide post 231 , and the fixing member 21 is provided with a guide hole 211 for radially limiting the guide post 231 .

[0038] In order to prevent the inflating piston 23 from being deflected when inflated, and the seal cannot be reset after inflating, a guide column 231 is provided on the inflating piston 23, and the guiding column 231 can move up and down through the hollow fixing part 21, ensuring the accurate reset of the inflating piston 23 after inflating seal.

[0039] see Figure 1-4 , the present...