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

Double-loop contact structure and vacuum arc-extinguishing chamber

A vacuum interrupter and double-circuit technology, applied in circuits, high-voltage air circuit breakers, high-voltage/high-current switches, etc., can solve problems such as small rated current capacity, large heat loss, and long path of current flow

Active Publication Date: 2021-03-19
XIAN HIGH VOLTAGE APP RES INST CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The object of the present invention is to provide a double-circuit contact structure and a vacuum interrupter to solve the existing problem: in the prior art, due to the longitudinal magnetic field control The structure of the longitudinal magnetic contact used in the technology is complex, which makes the path of the current flow long. When the contact is closed, the on-resistance of the switch structure is large, and the heat loss is large. The rated current will be limited and the rated current capacity will be small.

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
  • Double-loop contact structure and vacuum arc-extinguishing chamber
  • Double-loop contact structure and vacuum arc-extinguishing chamber
  • Double-loop contact structure and vacuum arc-extinguishing chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see Figure 1-4 , this embodiment discloses a double-circuit contact structure, the contact structure includes a conductive rod 1, one end of the outer side of the conductive rod 1 is electrically connected to the field loop body 2, and one end of the conductive rod 1 is located inside the field loop body 2. The flow circuit element 4 is electrically connected, and the end of the field circuit body 2 away from the conductive rod 1 is electrically connected to the contact piece 3, and the contact piece 3 is electrically connected to the flow circuit element 4;

[0028] Specifically, the shape of the through-flow loop element 4 is in the shape of a sheet, which can be a thin slice with a diameter of Ф50 mm and a thickness of 1 mm. The surface of the thin slice is treated with metallization, and the material of the through-flow loop element 4 can be PTC thermosensitive ceramics;

[0029] Here, one end of the conductive rod 1 is provided with a threaded insert, the inside o...

Embodiment 2

[0034] see Figure 5 , this embodiment discloses a vacuum interrupter including the double-circuit contact structure of the first embodiment above, including a vacuum interrupter housing 5 and two contact structures, and the contact structures are placed on the vacuum interrupter housing 5 Inside, and one of the contact structures is slidingly connected to the vacuum interrupter housing 5, and the other contact structure is fixedly connected to the vacuum interrupter housing 5. A shielding cover 6 is arranged inside the vacuum interrupter housing 5, and the shielding cover 6 is located on the outer side of the two contact structures close to one end, and the outer side of the sliding contact structure is sleeved with a bellows 7;

[0035] When the contact structure is in the state of closing and holding, the flow circuit element 4 has a conductance characteristic. At this time, the circuit current mainly flows through the conductive rod 1, the flow circuit element 4 and the co...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a double-loop contact structure and a vacuum arc-extinguishing chamber, and relates to the technical field of vacuum switches. The structure comprises a conducting rod, one endof the outer side of the conducting rod is electrically connected with a field loop body, a through-flow loop element is electrically connected to one end of the conducting rod and located in the field loop body, a contact piece is electrically connected to the end, away from the conducting rod, of the field loop body, and the contact piece is electrically connected with the through-flow loop element. The two contact structures are arranged in the vacuum arc-extinguishing chamber shell, so that the vacuum arc-extinguishing chamber has the capability of conducting large rated current in a closing keeping state, and when a fault occurs, circuit fault current mainly flows through the conducting rod, the field loop body and the contact pieces, and the field loop body generates a longitudinalmagnetic field, so that electric arcs can be extinguished when the two contact structures are separated, and the device has the capability of switching on / off large short-circuit current.

Description

technical field [0001] The invention belongs to the technical field of vacuum switches, in particular to a double-circuit contact structure and a vacuum interrupter. Background technique [0002] With the development of the power system, the application of vacuum circuit breakers has developed rapidly, and the technical requirements of the system for vacuum circuit breakers are also constantly improving. In the process of developing to high voltage and high current, vacuum switches are facing a technical problem: rated There is a contradiction between the current and the breaking current; [0003] The vacuum interrupter is the key component of the vacuum switch. It is responsible for the task of extinguishing the arc. The closing and breaking of the circuit current are all completed by the contacts in the vacuum interrupter. Ability, using the introduction of a magnetic field in the arc extinguishing chamber to control the arc, that is, the magnetic field control technology...

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): H01H33/664H01H33/662
CPCH01H33/664H01H33/66261
Inventor 李鹏杨哲潘峰颜莉萍
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD