Punch holder capable of accommodating vacuum bubbles

A technology of vacuum bubbles and splints, which can be used in variable inductors, variable transformers, high-voltage air circuit breakers, etc., and can solve problems such as difficulty in accommodating vacuum bubbles

Active Publication Date: 2010-08-18
SHANGHAI HUAMING POWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an upper splint capable of accommodating vacuum bubbles, without changing the volume range of the upper and lower splints of

Method used

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  • Punch holder capable of accommodating vacuum bubbles
  • Punch holder capable of accommodating vacuum bubbles
  • Punch holder capable of accommodating vacuum bubbles

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Embodiment Construction

[0022] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0023] Such as figure 1 , figure 2 As shown, an upper splint 100 capable of accommodating vacuum bubbles is a molded part of integral insulating material, which is used for switching cores of on-load tap changers. The upper splint 100 is a disc-shaped structure. There are 12 circular pits 110 on the lower circumference of the upper splint 100. The diameter of each circular pit 110 corresponds to the diameter of the vacuum bubble 200. One vacuum bubble 200 can be accommodated in a circular recess 110 (see image 3 ).

[0024] Three arc-shaped bosses 120 are arranged on the upper circumference of the upper splint 100 , and each arc-shaped boss 120 corresponds to four circular pits 110 . 4 circular holes 121 are arranged on every section of ar...

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Abstract

The invention discloses a punch holder capable of accommodating vacuum bubbles. The punch holder has a disk type structure; and the lower circumference of the punch holder is provided with a circular pit capable of accommodating the vacuum bubbles. The punch holder is provided with the circular pit capable of accommodating the vacuum bubbles to ensure that the vacuum bubbles are embedded into the punch holder, so that the punch holder has enough volume to accommodate the vacuum bubbles to achieve the aim of the punch holder under the condition of not changing volume range sizes of the punch holder and a die holder of a switching core loaded with a tap switch.

Description

technical field [0001] The invention relates to the technical field of on-load tap-changers for power transformers, in particular to a vacuum bubble switching core that can be directly interchanged with the switching core of the existing on-load tap-changer without changing the oil chamber of the switch. Upper splint to accommodate vacuum bubbles. Background technique [0002] The on-load tap-changer is used in power transformers or industrial transformers. It taps when the transformer does not interrupt the load current (that is, under load), changes the turns ratio of the transformer, and adjusts the output voltage of the transformer. [0003] The transition contacts and main on-off contacts of on-load tap-changers widely used in various fields of power supply are copper-tungsten contacts. When the switch is switched, the copper-tungsten contacts will Both contact and disconnection will generate arcs. While ablating the copper and tungsten contacts, the arcs will also pol...

Claims

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Application Information

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IPC IPC(8): H01F29/04H01H33/664H01H33/666
Inventor 肖日明肖申
Owner SHANGHAI HUAMING POWER EQUIP CO LTD
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