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Gas path breaker

A technology for circuit breakers and air circuits, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., can solve problems such as insulation damage between live parts and grounding boxes, and achieve the effects of promoting miniaturization, preventing insulation damage, and suppressing density reduction

Inactive Publication Date: 2009-12-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, in the pursuit of further miniaturization and simplification of the structure of the air circuit breaker, as well as further improvement of the breaking performance, if it is desired to use the air circuit breaker under harsher conditions, the conventional air circuit breaker In this case, there is concern about insulation breakdown between the live part and the grounding box

Method used

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no. 2 Embodiment approach

[0038] (structure)

[0039] figure 2 It is a cross-sectional view showing a second embodiment of the present invention. The second embodiment is characterized in that the angle θ between the gas blowing port 14 and the exhaust tube 11 is inclined within a range of 30 degrees or more and 90 degrees or less.

[0040] (Effect)

[0041] In the second embodiment, by inclining the gas outlet 14 by θ with respect to the central axis of the exhaust pipe 11 , the following unique effects can be obtained. That is, by inclining the gas outlet 14 at an angle smaller than 90 degrees with respect to the central axis of the exhaust tube 11 , the gas in the pressure chamber 15 can easily reach the exhaust tube shield 13 . In addition, by inclining the gas outlet 14 at an angle greater than 30 degrees with respect to the central axis of the exhaust tube 11 , the high-pressure gas in the exhaust tube 11 can easily enter the pressure chamber 15 .

no. 3 Embodiment approach

[0043] (structure)

[0044] image 3 It is a cross-sectional view showing a third embodiment of the present invention. The second embodiment is characterized in that, on the pressure chamber 15, in addition to the gas outlet 14, on the upstream side of the hot gas flow from the gas outlet 14, image 3 In the middle, a gas inflow port 18 is provided on the right side. In addition, a check valve 19 for a gas inlet is provided in the gas inlet 18 so that the gas can only flow from the side of the exhaust cylinder 11 to the pressure chamber 15 . Furthermore, a check valve 20 for a gas blowout port is provided in the gas blowout port 14 so that the gas can flow from the side of the pressure chamber 15 to the direction of the exhaust tube 11 .

[0045] (Effect)

[0046] In this third embodiment, in addition to the effects of the above-mentioned first embodiment, the following unique effects can be obtained. That is, by providing the gas inlet check valve 19 at the gas inlet 18 ...

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Abstract

The present invention provides an air conditioner that can suppress the decrease in the density of the inner peripheral portion of the exhaust pipe cover, prevent insulation breakdown, and realize high breaking performance even under severe conditions, and contribute to miniaturization and improvement in performance. road breaker. A pressure chamber (15) communicating with the exhaust tube (11) through a gas outlet (14) is provided on the outer periphery of the exhaust tube (11). The distance L between the gas outlet (14) and the front end of the exhaust tube cover (13) is set in the range of D / 20<L<D compared with the inside diameter D of the cover.

Description

technical field [0001] The present invention relates to a gas circuit breaker configured to blow insulating gas from a puffer chamber to an arc to extinguish the arc, and more particularly to a gas circuit breaker with a device for allowing hot gas heated by the arc to flow from the arc space to the arc breaker. A gas circuit breaker for the exhaust cylinder where the gas space in the container flows. Background technique [0002] At present, in the power system being used, gas circuit breakers filled with SF6 gas (SULFER HEXAFLUORIDE GAS) as insulating medium and arc extinguishing medium are widely used. For example, a box-type air circuit breaker is provided with a contact part that performs a breaking operation in a metal grounded box that is electrically grounded. This air circuit breaker can exhibit high breaking performance, and has received high support in recent years when the demand for electricity has increased. [0003] Here, refer to Figure 7 A conventional bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/915
Inventor 森正内井敏之河野广道
Owner KK TOSHIBA
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