Compact pressure self-compensation total-sea-depth stop valve

Abstract

The invention discloses a compact pressure self-compensation total-sea-depth stop valve, and belongs to the relevant technical field of valve bodies. The compact pressure self-compensation total-sea-depth stop valve comprises two stop valve bodies which are oppositely arranged on the same valve body and are of the same structure. Each stop valve body comprises a stop valve screw plug assembly, a valve element assembly, an isolation pressure sheet assembly, a valve sleeve, a stop valve spring and a valve seat. The stop valve bodies are opened in a manner of being hydraulically driven, and therefore remote control can be achieved. Closing of the stop valve bodies is achieved through the force of the stop valve springs and hydraulic force generated by the area difference between the two sidesof the large end of the valve element assembly. The form of ceramic and stainless steel cooperation is adopted in cooperation between the valve element assembly and other parts, friction force in themotion process of the valve element assembly is effectively reduced, and meanwhile the possibility of jamming of the valve element assembly is reduced. The two oppositely-arranged stop valve bodies use the same valve seat in common, and the space utilization rate is increased. According to the compact pressure self-compensation total-sea-depth stop valve, the structure is simplified, the size isreduced, and then the complexity and cost of a buoyancy adjusting system of a submersible are reduced.

Description

technical field [0001] The invention belongs to the technical field related to valve bodies, and more specifically relates to a compact pressure self-compensating full-sea depth stop valve. Background technique [0002] Submersibles are diving equipment with underwater observation and underwater operations. They are mainly used to perform tasks such as seabed investigation, seabed exploration, seabed development and salvage, lifesaving, etc., and can be used as an underwater operation base for diver activities. [0003] Submersibles need to adjust their buoyancy within a certain depth range in the ocean to hover at different depths to complete ocean surveys and ocean exploration tasks. In addition to actively controlling the buoyancy, after the submersible takes samples in the ocean, the weight will decrease due to the change of its own weight or the release of other equipment, and the change of the seawater density due to the change of the physical and chemical properties o...

AI Technical Summary

Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a compact pressure self-compensating full-sea depth stop valve, thereby solving the technical problems of complex structure and high cost in the existing buoyancy adjustment system

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