Disconnecting switch

An isolating switch, integrated technology, applied in the direction of air switch parts and other directions, can solve the problems of fatigue and aging of the compression spring and return spring, high temperature of the compression spring and return spring, damage to the electrical performance of the isolation switch, etc., to avoid fatigue and aging. , prolong the service life and improve the effect of reliable operation characteristics

Inactive Publication Date: 2013-06-05
大连金州电器有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The isolating switch used in the current power grid is generally LW1617-252 type. This kind of isolating switch has the following disadvantages during normal operation: although the ejector rod in the switch is not a conductive part of the conductive circuit, there is also current flowing through it. Rod heat causes compression spring and return spring to accelerate fatigue aging
Poor contact and heat generation of the isolating switch contacts caused by the fatigue of the compression spring and the return spring due to the lack of contact between the contacts of the isolating switch or insufficient pressing force
Due to the large heat energy generated by the poor contact of the contact, it is transmitted to the ejector rod, the compression spring and the return spring again, which makes the temperature of the compression spring and the return spring rise higher, making them tired and aging faster. This vicious circle It destroys the electrical performance of the isolating switch and shortens the service life of the isolating switch

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
  • Disconnecting switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Such as figure 1 As shown, since the ejector rod 1 is cut off by the insulating rod 2, the isolating switch blocks the current flowing from the ejector rod 2 during normal operation, so as to avoid the acceleration of the clamping spring 3 and the return spring 4 caused by the heating of the ejector rod 2 due to the current effect Fatigue and aging, thereby avoiding the heating problem of the isolating switch contact caused by the contact of the isolating switch is not in place or the pressing force is not enough. The service life of the isolating switch is greatly improved.

[0012] For the production of new push rods, an insulating rod can be added between the upper and lower two sections of push rods to make one.

[0013] For the ejector rod in use, cut off the middle of the ejector rod during transformation, and cut off a section from one end, then cut a section of insulating rod, the diameter of the insulating rod is greater than the diameter of the metal rod, and...

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 relates to a disconnecting switch. A push rod is arranged in a disconnecting switch body, the push rod is divided into an upper section and a lower section which are connected to be a whole by an insulating rod. By means of the disconnecting switch, electric current in the push rod can be effectively prevented from flowing when the disconnecting switch normally operates, accelerating fatigue and aging of a pressure spring and a reset spring due to current effect and heating of the push rod is avoided, and problems that switching on of a contact of the disconnecting switch is not in place due to fatigue of the pressure spring and the reset spring or the contact of the disconnecting switch is heated due to insufficient pressing force are radically solved. The reliable operating characteristic of the disconnecting switch is greatly improved, and the service life of the disconnecting switch is prolonged.

Description

technical field [0001] The invention belongs to a power management system, and in particular relates to an isolating switch. Background technique [0002] The rapid development of the national economy relies on electricity. The society has higher and higher requirements for the quality of electric energy and the reliability of power supply. The isolating switch plays a pivotal role in the power grid. equipment. [0003] The isolating switch used in the current power grid is generally LW1617-252 type. This kind of isolating switch has the following disadvantages during normal operation: although the ejector rod in the switch is not a conductive part of the conductive circuit, there is also current flowing through it. Heating of the rod leads to accelerated fatigue and aging of the compression spring and return spring. Poor contact and heating of the isolating switch contacts caused by the fatigue of the compression spring and the return spring caused by the contact gap of ...

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 Applications(China)
IPC IPC(8): H01H31/02
Inventor 张朝全
Owner 大连金州电器有限公司
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
Try Eureka
PatSnap group products