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Gas circuit breaker

A gas circuit breaker, gas technology, applied in the direction of high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of unable to obtain current breaking performance, unable to obtain sufficient pressure rise, pressure difference, etc.

Active Publication Date: 2012-07-04
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a problem that the arc-extinguishing gas flow generated by the heat energy of the arc diffuses in the blowing chamber, so that a sufficient pressure rise cannot be obtained, and a sufficient pressure difference cannot be ensured between the space where the arc is generated and the blowing chamber. Therefore, sufficient breaking performance of the current cannot be obtained

Method used

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  • Gas circuit breaker
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Examples

Experimental program
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Effect test

no. 1 approach

[0053] figure 1 It is a sectional view showing the structure of the gas circuit breaker of this embodiment.

[0054] The gas circuit breaker of the present embodiment includes a hollow cylindrical container 50 filled with arc-extinguishing gas, a movable contact part 1 on the central axis of the container 50, and a Opposite contact part 2 ( figure 1 The part surrounded by the dotted line), and the fixed piston 24 that is in contact with a part of the movable contact part 1 .

[0055] In addition, in figure 1 The energization state in which the movable contact part 1 and the opposing contact part 2 are in contact is shown in . Here, it is assumed that an alternating current flows in an energized state.

[0056] In the following description, the direction of the opposing contact part 2 side is defined as the front ( figure 1 the left side of the ), define its opposite side as the rear ( figure 1 to the right of the ).

[0057] In the present embodiment, the movable contac...

no. 2 approach

[0108] Refer to the following Figure 6 and Figure 7 The structure of the gas circuit breaker of the second embodiment will be described. here, Figure 6It is a sectional view showing the structure of the gas circuit breaker of this embodiment, Figure 7 It is a cross-sectional view showing the B-B cross-section of the gas circuit breaker of the present embodiment. In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and description is abbreviate|omitted.

[0109] Such as Figure 6 As shown, in the gas circuit breaker of the present embodiment, the division member 3 is provided on the inner peripheral side (inner peripheral surface) of the side surface parallel to the central axis in the thermal blowing chamber 42 .

[0110] Such as Figure 7 As shown, an integral ring-shaped flat plate is used as the division member 3 , and the division member 3 is formed on the operating rod 21 forming the inner peripheral surface of the hea...

no. 3 approach

[0123] Refer to the following Figure 9 The structure of the gas circuit breaker of this embodiment is demonstrated in detail. In addition, the same code|symbol is attached|subjected to the same structure as 1st Embodiment, and description is abbreviate|omitted.

[0124] The gas circuit breaker of this embodiment does not divide the thermal blowing chamber 42 and the mechanical blowing chamber 43 by the partition wall 26, but only has the blowing chamber 48. In this point, it is different from the first embodiment, the second embodiment, and the second embodiment. Modifications of the method are different.

[0125] In the gas circuit breaker of this embodiment, the dividing member 3 is arranged on the outer peripheral side (outer peripheral surface) of the side surface parallel to the central axis in the blowing chamber 48, and divides the blowing chamber 48 into a main space 48a and a slave space 48b. At this time, as in the first embodiment, after the airflow generated by ...

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Abstract

The present invention provides a gas circuit breaker comprising: a container filled with an arc-suppressing gas; a first contact part arranged in the container and provided with a first arc contact; and a second contact part arranged opposite to the first contact part in the container and provided with a second arc contact. The first contact part comprises: a gas blowing chamber comprising a space for storing the arc-suppressing gas used for performing arc suppression to the arc generated between the first arc contact and the second arc contact; a flow path for the arc-suppressing gas, comprising a first opening and a second opening, wherein the first opening is arranged near the first arc contact, the second opening is connected with the gas blowing chamber; and an a planar member arranged in the space of the gas blowing chamber and configured to shield gas flow of the arc-suppressing gas coming from the flow path and split the space into a first space and a second space, therefore, the gas circuit breaker capable of obtaining a sufficient breaking performance for a current by fully rising a pressure in the gas blowing chamber through heat energy of the arc can be provided.

Description

technical field [0001] Embodiments of the present invention relate to a gas circuit breaker. Background technique [0002] In the blown type gas circuit breaker, the pressure in the blowing chamber is increased by the flow of arc-extinguishing gas generated by the heat energy of the arc, and at the current zero point where the arc weakens, it passes between the pressure-increased blowing chamber and the space where the arc is generated. The pressure difference is used to blow the arc-extinguishing gas to the arc, thereby breaking the current. [0003] In such a gas circuit breaker, in order to improve the current breaking performance, it is necessary to ensure a sufficient pressure difference between the space where the arc is generated and the blowing chamber. [0004] However, there is a problem that the arc-extinguishing gas flow generated by the heat energy of the arc diffuses in the blowing chamber to obtain a sufficient pressure rise, and a sufficient pressure differe...

Claims

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Application Information

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IPC IPC(8): H01H33/74
Inventor 神保智彦B・德巴思苏新海健宇田川惠佑铃木克巳
Owner KK TOSHIBA
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