Unlock instant, AI-driven research and patent intelligence for your innovation.

Normal temperature vacuum leak-detection system used for spacecraft part assembly

A technology of leak detection and normal temperature, which is applied in the direction of using liquid/vacuum degree to measure liquid tightness and detecting the appearance of fluid at the leak point, etc. It can solve the problems of reducing and limiting the leak rate error of leak detection sensitivity test, and achieves Eliminates helium accumulation, achieves automatic calibration, and eliminates the effect of helium accumulation problems

Inactive Publication Date: 2015-07-08
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The standard leak of vacuum leak detection usually adopts the film helium-permeable standard leak. However, due to the influence of factors such as the accumulation of helium in the standard leak, the type of backing pump, and the backflow of helium in the environment, the improvement of leak detection sensitivity and the test leak The error of the rate is reduced, which is limited to a certain extent

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
  • Normal temperature vacuum leak-detection system used for spacecraft part assembly
  • Normal temperature vacuum leak-detection system used for spacecraft part assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be described in detail below with reference to the accompanying drawings, but the accompanying drawings are only for the purpose of illustration and are not intended to limit the protection scope of the present invention, which is defined by the appended claims.

[0016] figure 1 A schematic diagram of a leak detection system for vacuum leak detection of spacecraft components at room temperature according to the present invention is shown. The room-temperature vacuum leak detection leak detection system for the components of the spacecraft includes a cylindrical vacuum container 1, a high vacuum valve 8, a high vacuum leak detection valve 14, a high vacuum pump 9, a front-stage air extraction valve 10, and a front-stage air extraction pump 11. Pre-stage leak detection valve 12, helium mass spectrometer leak detector 13, standard leak 5, standard leak detection valve 2, standard leak air pump 7, standard leak air extraction valve 6 and control ...

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 discloses a normal temperature vacuum leak-detection system. According to the vacuum leak-detection system, due to the fact that a screw dry pump is selected to serve as a preceding-level sucking pump, a high vacuum leak-detection valve is additionally arranged between a high vacuum main pump and a high vacuum valve. A standard leak air exhaust valve, a standard leak leakage detecting valve and a standard leak sucking pump are arranged between a standard leak and a vacuum container. The valves used for detecting leakage are connected with a control unit through a service cable, wherein the control unit is provided with manual and automatic control modes. Therefore, automatic calibration of the leak-detection system is achieved.

Description

technical field [0001] The invention belongs to the field of non-destructive testing of the sealing performance of spacecraft components, and in particular relates to a vacuum leak detection system used at normal temperature, which is mainly used for leak detection of spacecraft components. Background technique [0002] For spacecraft components with sealing requirements, sealing performance testing is a must. At present, the leak detection method of vacuum leak detection is mostly used in the sealing performance test of the components of the spacecraft department in our country. The standard leak of vacuum leak detection usually adopts the film helium-permeable standard leak. However, due to the influence of factors such as the accumulation of helium in the standard leak, the type of backing pump, and the backflow of helium in the environment, the improvement of leak detection sensitivity and the test leak The reduction of the rate error is limited to a certain extent. C...

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): G01M3/20
Inventor 史纪军孙立臣郭海涛孙立志张海峰汪力齐飞飞
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com