High-voltage vacuum switch tube of depressurization separation cavity
A vacuum switch tube and separation chamber technology, applied in high-voltage/high-current switches, high-voltage air circuit breakers, electric switches, etc., can solve the problems of reducing the mechanical life of bellows, and achieve the effect of improving the service life and reducing the internal and external pressure difference.
Inactive Publication Date: 2020-12-08
芜湖锦晔双腾新能源科技有限公司
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- Application Information
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Problems solved by technology
[0004] Among them, when the bellows opening speed and internal and external pressure difference, the maximum equivalent stress value of the bellows will increase with the increase; and its maximum equivalent stress value reaches a higher value, and the mechanical life of the bellows will decrease sharply
Method used
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] In describing the present invention, it is to be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "surrounding" etc. Indicating orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a sp...
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Abstract
The invention discloses a high-voltage vacuum switch tube of a voltage reduction separation cavity, and relates to the technical field of vacuum switch tubes. The device comprises an insulating shell,a shielding cover, a movable contact rod and a static contact rod, a shielding cover is fixed in the insulating shell; an end socket A is fixed at one end of the insulating shell; an end socket A isfixed on the peripheral side surface of the static contact rod; an end socket B is fixed at the other end of the insulating shell; a seal head B is in sliding fit with the peripheral side surface of the movable contact rod; a static contact is fixed on the static contact rod; a moving contact is fixed on the moving contact rod; a through hole is formed in the seal head B; a depressurization separation cavity is formed in the inner surface of the through hole; and a sliding sealing ring is matched between the peripheral side surface of the movable contact rod and the inner wall of the through hole. Through the effects of the end socket B, the pressure reduction separation cavity and the sliding sealing ring, the internal and external pressure difference borne by the corrugated pipe is smaller than the internal and external pressure difference borne by an existing corrugated pipe, the effect of remarkably reducing the internal and external pressure difference borne by the corrugated pipeis achieved, and therefore the service life of a product is prolonged.
Description
technical field [0001] The invention belongs to the technical field of vacuum switch tubes, in particular to a high-voltage vacuum switch tube for a decompression separation cavity. Background technique [0002] For example, "Influence of Opening Speed of Vacuum Switch in High Pressure Environment on Fatigue Life of Bellows" in CNKI, published on December 16, 2019; the conclusion of the original text is expressed as: take the bellows of 40.5kV commercial vacuum interrupter as the research object , using the fluid-solid coupling method, the transient relative displacement, transient equivalent stress distribution, and fatigue life of the bellows were obtained under the conditions of a pressure difference of 0.1-0.4MPa and a compression speed of 1.0-4.0m / s. Experimental verification was carried out, and the specific conclusions are as follows: [0003] 1) When the opening speed of the bellows is kept constant, the maximum equivalent stress value of the bellows increases wit...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01H33/662H01H33/664
CPCH01H33/66207H01H33/66238H01H33/664H01H2033/66223
Inventor 彭睿
Owner 芜湖锦晔双腾新能源科技有限公司