Airtightness detection device and detection method of valve opening

A technology of air tightness detection and valve port, which is applied in the direction of measuring device, liquid tightness measurement using liquid/vacuum degree, fluid tightness test, etc. Problems such as the immaturity of valve port air tightness detection, etc., achieve the effect of easy function, simple device structure and high measurement accuracy

Inactive Publication Date: 2018-07-27
TIANJIN TRINOVA AUTOMOTIVE TECH CO LTD
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a valve port airtightness detection device to alleviate the technical problem that the valve

Method used

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  • Airtightness detection device and detection method of valve opening
  • Airtightness detection device and detection method of valve opening
  • Airtightness detection device and detection method of valve opening

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Embodiment Construction

[0038] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to the technical field of vehicle safety, in particular to an airtightness detection device and detection method of a valve opening. The airtightness detection device comprises an air source, a low pressure air inlet valve, an air inlet sealing cavity, an exhaust sealing cavity, a first low pressure measurement valve, a flowmeter, a low pressure exhaust valve, a controller and a first driving mechanism which is used for driving a valve rod of a normally open valve to move; the air source, the low pressure air inlet valve and an air inlet of the air inlet sealing cavity are communicated with one another in sequence; an air outlet of the exhaust sealing cavity is communicated with the first low pressure measurement valve, the flowmeter and the low pressure exhaust valvein sequence; the exhaust sealing cavity is formed above the air inlet sealing cavity, the normally open valve is arranged inside the exhaust sealing cavity, and an inlet of a valve base of the normally open valve is communicated with an air outlet of the air inlet sealing cavity; an outlet of a valve body of the normally open valve is communicated with the exhaust sealing cavity. The airtightnessdetection device solves the technical problems that airtightness detection of a valve opening of an existing normally open valve is not mature, and the airtightness of the valve opening of the normally open valve cannot be well detected.

Description

technical field [0001] The invention relates to the technical field of automobile safety, in particular to a valve port air tightness detection device and detection method. Background technique [0002] The anti-lock brake system is referred to as ABS, and the electronic stability control system is referred to as ESC. Among them, ABS and ESC give different optimal braking forces to each wheel according to the friction between the tire and the road surface during vehicle driving. Brake fluid pressure method to achieve the purpose of braking. ABS / ESC uses the switch of the solenoid valve to realize the adjustment of the brake pressure of the car, so as to control the driving stability of the car. However, the current domestic manufacturing base of ABS / ESC solenoid valves is relatively weak. Among them, including normally open valves, the air tightness of the valve port structure of normally open valves is not yet mature, and the valve port of the open valve cannot be detected...

Claims

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Application Information

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IPC IPC(8): G01M3/28
CPCG01M3/2876
Inventor 赵洵郭国强戚晓伟李晓杰郭向飞
Owner TIANJIN TRINOVA AUTOMOTIVE TECH CO LTD
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