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Outdoor high voltage vacuum breaker of 40.5 KV

A vacuum circuit breaker, high-voltage technology, applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of poor consistency of closing and opening time, poor repeatability of closing and opening time, and easy wear and tear of moving parts. Achieve the effects of increased work reliability, good consistency, and difficult changes in performance parameters

Active Publication Date: 2014-06-04
辽宁北科智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The outdoor high-voltage vacuum circuit breaker with spring operating mechanism, due to the structural characteristics of its operating mechanism, determines that its moving parts are not only easy to wear and tear, making it a large maintenance workload, poor reliability and short life; and it is equipped with The high-voltage vacuum circuit breaker with this spring operating mechanism has poor consistency of closing and opening time, especially poor repeatability of closing and opening time.
Therefore, this outdoor high-voltage vacuum circuit breaker can only be used in power transmission and distribution systems with low requirements, but not in power transmission and distribution systems with high requirements and precise and fast closing and opening time control.

Method used

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  • Outdoor high voltage vacuum breaker of 40.5 KV
  • Outdoor high voltage vacuum breaker of 40.5 KV
  • Outdoor high voltage vacuum breaker of 40.5 KV

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment one (see image 3 ), which means that the permanent magnet operating mechanism used by the circuit breaker has only one permanent magnet mechanism. The permanent magnet operating mechanism has an "H" shaped mechanism bracket, and in order to increase the structural strength, the entire mechanism bracket is welded on another iron plate. A hole is respectively arranged on the top of the two side walls of the mechanism support, and a bearing is housed on the hole. A spline shaft is worn on the bearing, and an opening and closing drive crank arm 19, output crank arm 23 and extension spring crank arm 20 are housed on the spline shaft. These bearings, spline shafts, opening and closing drive levers 19, output levers 23 and extension spring levers 20 etc. constitute the transmission mechanism of the permanent magnet operating mechanism. Wherein the output crank arm 23 and the transmission crank arm 18 of the porcelain sleeve pillar of the intermediate phase are co...

Embodiment 2

[0021] Embodiment two (see Figure 4 ), its overall structure is similar to one of the embodiments, and its biggest difference is that the permanent magnet operating mechanism adopts two permanent magnet mechanisms 25. Therefore, its corresponding transmission mechanism, opening spring 21, etc. have corresponding changes. Its specific structure is: the bracket of the permanent magnet operating mechanism is to install a mounting plate vertically in the middle of the "H" shaped bracket in one of the embodiments. The mounting plate can make the mechanism bracket form two spaces. In each space, a permanent magnet mechanism 25 is installed. On the splined shaft of the transmission mechanism, a switch-on drive arm 19 and an extension spring arm 20 are correspondingly added, and at the same time, a screw rod 24 with positive and negative threads and a coupling head and a fixed screw are added. Connecting rod and opening spring 21. The connection mode and installation method of it...

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Abstract

The invention relates to an outdoor high voltage vacuum breaker of 40.5 KV. An overall structure is a three-phase discrete porcelain bushing support type, a porcelain busing support is divided into an upper portion and a lower portion, a vacuum arc extinguishing chamber, an electric conducting contact, a contact spring and an insulation pull rod are arranged inside the porcelain bushing support, transmission connecting levers on the three-phase porcelain bushing support are connected through two groups of horizontal connecting rods, and a transmission connecting lever of a middle phase and an output connecting lever of a permanent magnetic operation mechanism are connected through a movable connecting rod. The permanent magnetic operation mechanism is arranged in an operation case of the bottom of the machine frame and composed of a support, a transmission mechanism arranged on the upper portion of the support, a permanent magnetic mechanism arranged in the middle of the support and a switching-off spring arranged outside the support. The outdoor high voltage vacuum breaker effectively reduces operation mechanism maintaining work load, improves working reliability and prolongs service life of the operation mechanism, improves consistency and repeatability of switching-on and switching-off time, and can be applied to a power transmission and distribution system with precise and fast switching-on and switching-off time control requirements.

Description

technical field [0001] The invention relates to a 40.5KV level outdoor high-voltage vacuum circuit breaker. Background technique [0002] At present, in the prior art, the product structures of 40.5KV outdoor high-voltage vacuum circuit breakers are all three-phase linkage spring operating mechanism circuit breakers. In the latest edition of "High Voltage Electrical Appliance Product Handbook" (published by China Xi'an High Voltage Electrical Apparatus Research Institute in 2008), the performance parameters and overall structure of ZW30-40.5 and other typical outdoor high voltage vacuum circuit breakers are published. The outdoor high-voltage vacuum circuit breaker with spring operating mechanism, due to the structural characteristics of its operating mechanism, determines that its moving parts are not only easy to wear and tear, making it a large maintenance workload, poor reliability and short life; and it is equipped with The high-voltage vacuum circuit breaker with this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/666
Inventor 王忠良庄小奕何平王春岩
Owner 辽宁北科智能科技有限公司