Flow adaptation structure of ultralow-temperature integrated ball valve

Abstract

The invention discloses a flow adaptation structure of an ultralow-temperature integrated ball valve. The flow adaptation structure comprises a ball body rotationally arranged in a valve body, and is characterized in that bearing plates are arranged on the upper side and the lower side of the ball body correspondingly, the bearing plates are arranged on the outer side of a valve rod in a sleeving mode, the ball body comprises an outer rotating ball, and a circulating hole is formed in the outer rotating ball. The top of the circulating hole is detachably connected with a limiting sealing plate, the top of the limiting sealing plate is attached to the top of the bearing plate in a sealed mode, and the outer rotating ball is rotationally connected with the interior of the valve body through a valve rod arranged on the outer side of the outer rotating ball. The flow adaptation structure can be adjusted according to different flow speeds of media, can be matched with different media in flow, and has good anti-explosion performance.

Description

technical field [0001] The invention relates to a ball valve, in particular to a flow adaptation structure of an ultra-low temperature integrated ball valve. Background technique [0002] Cryogenic valves refer to valves below -101°C (not included), usually made of low-alloy steel with good low-temperature performance, and have special requirements in terms of structural design and process. For example, there is a structure to prevent the liquid accumulated in the body cavity from vaporizing and abnormal boosting, and a "long neck" structure, vacuum jacket, etc. are used to reduce cold loss. Valves used in production equipment such as petroleum products, petroleum gas and natural gas liquefaction and separation, and liquid oxygen. The ultra-low temperature integrated ball valve in the prior art, because it has no reasonable flow adaptation structure, cannot control the flow velocity of the liquid medium well during use, that is, it cannot meet the flow adaptation requiremen...

AI Technical Summary

Problems solved by technology

The ultra-low temperature integrated ball valve in the prior art, because it has no reasonable flow adaptation structure, cannot control the flow velocity of the liquid medium well during use, that is, it cannot meet the flow adaptation requirements of different media, and the valve’s explosion-proof performance Poor, it will cause certain safety hazards to the use safety

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