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Leak inspection device and leak inspection method

An inspection device, inspection room technology, applied in the direction of measuring devices, testing of machine/structural components, instruments, etc., can solve problems such as time required

Pending Publication Date: 2021-09-07
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, when the first chamber to be inspected and the second chamber to be inspected are sequentially pressurized, it takes time until the inspection of these chambers to be inspected is completed.

Method used

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  • Leak inspection device and leak inspection method
  • Leak inspection device and leak inspection method
  • Leak inspection device and leak inspection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] [Schematic Configuration of Leak Inspection Device 1]

[0044] figure 1 It is a schematic configuration diagram of the leak inspection device 1 . The leakage inspection device 1 includes a supply source A, a supply path P1, a reference path P2, a common inspection path P3, branch inspection paths P41 to P43, a common preload path P5, branch preload paths P61 to P63, a supply valve V1, and a reference valve V2. , common inspection valve V3, inspection valves V41-V43, pre-pressure valves V61-V63, exhaust valve Ve, electro-pneumatic regulators R1 and R5, proofreading unit (master) M, differential pressure sensor S and control device 100.

[0045] The supply source A is, for example, an air pump. The supply path P1, the reference path P2, the common inspection path P3, the branch inspection paths P41 to P43, the common preload path P5, and the branch preload paths P61 to P63 are configured by connecting a plurality of pipes. The supply valve V1, the reference valve V2, a...

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Abstract

The invention relates to a leak inspection device and a leak inspection method. The leak inspection device includes an inspection mechanism that executes a first inspection process for compressing the insides of a first inspection chamber and a reference chamber, and inspecting the first inspection chamber for a pressure leak based on a differential pressure therebetween, and a second inspection process for compressing the insides of a second inspection chamber and the reference chamber, and inspecting the second inspection chamber for a pressure leak based on a differential pressure therebetween, a first pre-compression valve that opens and closes a first pre-compression path, and a control device that opens, during the execution of the first inspection process, the first pre-compression valve to pre-compress the second inspection chamber, and causes, in a state where the inside of the second inspection chamber is pre-compressed, the inspection mechanism to execute the second inspection process.

Description

technical field [0001] The present invention relates to a leakage inspection device and a leakage inspection method. Background technique [0002] A leak detection device is known which detects pressure leaks in a plurality of inspected chambers. For example, in the technology of Japanese Patent Laid-Open No. 2000-205991, the first inspected chamber, the second inspected chamber, and the reference chamber are pressurized at the same time, and the first inspected chamber is inspected based on the pressure difference between the first inspected chamber and the reference chamber. Then check the pressure leakage of the second inspected chamber based on the pressure difference between the second inspected chamber and the reference chamber. [0003] In the technique of Japanese Patent Laid-Open No. 2000-205991, the first inspection subject room and the second inspection subject room are connected to each other via a common passage. Measure the pressure difference between the com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
CPCG01M3/26G01M3/3263G01M3/3209
Inventor 松川哲也
Owner TOYOTA JIDOSHA KK