Vacuum low-temperature ball valve

A technology of vacuum cryogenic and ball valves, applied in the direction of valve devices, cocks including cut-off devices, engine components, etc., can solve the problems of short service life, poor heat insulation effect, etc., achieve small cold loss, reduce metal heat conduction, and self-centering sexual effect
CN101042198AInactive Publication Date: 2007-09-26中国航天科技集团公司第一研究院第一〇一研究所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中国航天科技集团公司第一研究院第一〇一研究所
Publication Date
2007-09-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The vacuum low temperature ball valve comprises the clamping part, seal part and the drive part, with the clamping part composed of inlet flange, outlet flange and the outside shell connected in the middle, the seal structure composed of the valve inside the jacket with both ends fixed on the inlet and outlet flanges, fixed on the spring valve base at the inlet end of the valve through the screw bolt and nut and two seal bases with seal cushion embedded at both sides, with one connected to the spring valve base and the other connected to the valve. The drive part comprises the ball floating inside the valve, both sides of the ball contacting with two seal base, sliders on the top of the ball, with spring base and spring connected to the valve at the bottom of the ball. There are valve bar, guide sleeve and drive mechanism on the slider. It has good seal feature, high reliability, less cold loss, and long working cycle.
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Description

technical field

[0001] The invention relates to a vacuum cryogenic ball valve used in a cryogenic pipeline delivery system in the technical field of cryogenic engineering. Background technique

[0002] The Chinese patent "Taizhou Guanghui Automatic Control Technology Co., Ltd." with the application number of 200510025655.5 discloses a ball valve with a novel sealing structure, which belongs to the field of valve technology. a question. The ball valve with a novel sealing structure includes a valve body, a valve core, a valve stem and a handle. The valve core is located in the valve body, and its center is a through hole. The outer end protrudes from the valve body and is fixedly connected with the handle. The valve stem is movably connected with the valve core. There is a pressure hole in the valve core to make the valve core through hole communicate with the valve stem. A shoulder, and a gasket is provided between the shoulder and the valve body. The sealing structure at...

Claims

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