Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A leak detection device and leak detection method for large leak measurement

A technology of leak detection and gas storage chamber, which is applied in the direction of measuring the rate of increase and deceleration of fluid, and liquid tightness measurement using liquid/vacuum degree, etc. It can solve the problems of huge deviation of test results, exhaustion, helium overflow, etc. , to achieve the effects of simple structure, fast leak detection speed and accurate leak detection results

Inactive Publication Date: 2022-01-14
ULVAC ORIENT CHENGDU
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leak detection method can perform high-precision vacuum box helium leak detection on non-pre-filled helium self-closing body workpieces, but if the leak hole on the workpiece is large, after the helium pressure is completed on the workpiece, the helium pressure cavity will be exhausted, Purge the floating helium on the surface of the workpiece, vacuumize the detection chamber after being placed in the detection chamber, and the pressed helium will overflow in large quantities during the entire process flow of the workpiece, or even completely dissipate.
This leads to huge deviations in test results, and even major quality problems where missing products are judged as qualified products.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A leak detection device and leak detection method for large leak measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Such as figure 1 As shown, this embodiment provides a leak detection device for large leak measurement, including a gas source 1, a gas storage chamber 2 connected to the gas source 1 through a gas source pipeline, and a vacuum chamber connected to the gas storage chamber 2 through an inflation pipeline. Chamber 3, a pressure sensor 4 connected to the gas storage chamber 2, an inflation valve 5 is provided at the interface connected between the vacuum chamber 3 and the inflation pipeline, and an air source valve 6 is provided at the interface connected between the gas storage chamber 2 and the gas source pipeline;

[0023] Among them, several vacuum chambers 3 are respectively connected to the gas storage chamber 2 through a plurality of inflatable pipes, and several gas storage chambers 2 are respectively connected to the gas source 1 through gas source pipes.

[0024] The leak detection method provided by the leak detection device in this embodiment is characterized i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a leak detection device for large leak measurement, which includes a gas source, a gas storage chamber connected to the gas source through a gas source pipeline, a vacuum chamber connected to the gas storage chamber through an inflatable pipeline, and a gas storage chamber connected to the gas storage chamber. A pressure sensor, an inflation valve is arranged at the interface connecting the vacuum chamber and the inflation pipeline, and an air source valve is arranged at the interface connecting the air storage chamber and the gas source pipeline.

Description

technical field [0001] The invention belongs to the technical field of large leak measurement, and in particular relates to a leak detection device and a leak detection method for large leak measurement. Background technique [0002] For the method of helium leak detection for self-closing workpieces, helium leak detection in a helium pressure vacuum box is usually used, that is, the workpiece is placed in a helium pressure chamber, and helium gas with a set pressure is filled into the helium pressure chamber for the set time. If it is a leaky workpiece, the helium in the helium pressure chamber will enter the inside of the workpiece through the leak hole (leaky part) of the leaky workpiece. A workpiece without leaks will not leak helium into the workpiece. After the set helium pressure time is completed, the helium in the helium pressure chamber is exhausted, and then the workpiece is taken out, and the surface of the workpiece is purged with nitrogen to remove the floatin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 张果蓝峰李健瞿骑龙雷福元钟林王华仙
Owner ULVAC ORIENT CHENGDU
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com