Liquid high pressure-driven oblique bellows stop valve with lockset

Abstract

The invention discloses a liquid high pressure-driven oblique bellows stop valve with a lockset, and relates to the stop valve with the lockset. The stop valve comprises an oblique flange type valve body and the lockset, wherein the lockset consists of a lock body, a lock handle integrated with the lock body and a lock bridge. A Co-based hard alloy sealing ring is arranged on the oblique flange type valve body in an overlaying way. A titanized austenitic stainless steel bellows device is flexibly mechanically connected between a valve rod and a valve clack which is positioned below the valve rod. A liquid high pressure drive head spindle sleeve is arranged in a liquid high pressure drive head spindle and mechanically connected by a liquid high pressure drive head device. The lock body and the lock handle are provided with a lock body hole and a lock handle hole which are parallel to each other respectively. One end of the lock body is provided with a keyhole. A lock bridge slot is reserved on the lock bridge. A movable positioning bolt is embedded into the lock body hole. The liquid high pressure-driven oblique bellows stop valve with the lockset adopts a dual, firm and wearable bellows sealing design, and is applied to the disconnection or connection of pipeline mediums on pipelines under various working conditions in the oil industry, the chemical industry and the like. Moreover, the locking height of the lock bridge can be adjusted to achieve adaptability to valves of different specifications.

Description

Technical field: [0001] The invention relates to a shut-off valve with a lock. In particular, the utility model relates to a lock cut-off valve with a lock used on pipeline valves. Background technique: [0002] In the known shut-off valve, the opening and closing part of the shut-off valve is a plug-shaped disc, the sealing surface is a plane or a conical surface, and the disc moves linearly along the center line of the fluid. The movement type of the valve stem includes a lifting rod type and a lifting rotating rod type. The stop valve is only suitable for full opening and full closing, and adjustment and throttling are not allowed. It is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. When the medium enters the valve from the bottom of the disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by th...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the stop valve is forced to seal, when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. The invention provides a bellows oblique stop valve driven by high pressure liquid with lock

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