Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultrasonic vacuum degree detection method and detector for vacuum breaker

A vacuum circuit breaker, ultrasonic testing technology, applied in measuring devices, material analysis using sonic/ultrasonic/infrasonic waves, instruments, etc., can solve problems such as insufficiency, achieve good safety, facilitate testing automation, and realize testing automation. Effect

Inactive Publication Date: 2004-06-02
WUHAN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the "voltage addition method", "discharge current detection method", "discharge interference detection method", "intermediate potential change detection method" and "direct detection method" studied at home and abroad have their own strengths, but none of them can Meet the requirements of on-site detection of vacuum circuit breakers, namely, the safety and simplicity of operation, the reliability of detection, real-time performance, and versatility, etc.

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
  • Ultrasonic vacuum degree detection method and detector for vacuum breaker
  • Ultrasonic vacuum degree detection method and detector for vacuum breaker
  • Ultrasonic vacuum degree detection method and detector for vacuum breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] ①The cross-sectional schematic diagram of vacuum circuit breaker 1 is as follows: figure 1 shown. According to theoretical research, it can be seen that when the vacuum degree of the vacuum circuit breaker 1 is normal, there is sufficient insulation strength between the electrode 1.1 and the intermediate protective screen 1.3, so no discharge phenomenon will occur. When the degree of vacuum is reduced to a certain level, a discharge phenomenon will occur; with the occurrence of the discharge phenomenon, it will also be accompanied by physical phenomena such as light, heat and sound. This method realizes the detection of the vacuum degree by detecting the sound wave generated when the discharge phenomenon occurs. Its working principle is as follows: When the vacuum degree of the vacuum circuit breaker 1 is reduced, a discharge occurs between the electrode 1.1 and the intermediate protective screen 1.3, and a sound wave is emitted. Although sound waves cannot propagate ...

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 present invention relates to the vacuum degree detection especially the automatic ultrasonic detection of vacuum breaker. The vacuum degree is obtained indirectly through the detection of sound wave strength by means of sound wave emitting technology. The detector consists of piezoelectric sensor and detection instrument connected together, and the piezoelectric sensor is made to contact closely with vacuum breaker. Owing to no altering the vacuum breaker structure and no electric connection with the vacuum breaker, the detection is safe, reliable, practical and universal.

Description

technical field [0001] The invention relates to a detection of vacuum degree of a vacuum circuit breaker, in particular to an ultrasonic automatic detection method and its device. Background technique [0002] Due to its unique arc-extinguishing performance, vacuum circuit breakers have been widely used in power systems. However, after the vacuum degree of the vacuum circuit breaker is reduced, if it cannot be detected in time, it will explode due to the inability to extinguish the arc when the switch is switched on under a heavy load. Such explosion accidents occur frequently, often causing large-scale power outages, and seriously threatening the safe operation of the power system. Therefore, it is an urgent need for fault diagnosis and maintenance of vacuum circuit breakers, as well as for automatic diagnosis, to develop a high-level method and device for detecting the vacuum degree of vacuum circuit breakers suitable for on-site use. [0003] At present, the "magnetron ...

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
IPC IPC(8): G01N29/00
Inventor 舒乃秋毛慧和向铁元吕艳萍
Owner WUHAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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