Submarine gate valves are crucial to underwater production systems,and their stability and safety are vital to the security of oil fields.In response to the technological bottlenecks in domestic ma-rine natural gas industry regarding underwater valves,this design proposes a new type of submarine gate valve suitable for deepwater environments.The design emphasizes the reliability of operation,based on a hydraulic actuator,and introduces an independent helical transmission actuator as an emergency solu-tion to ensure rapid switching in case of hydraulic failure,guaranteeing the continuous operation of the gate valve.At the same time,the sealing performance of the gate valve has been deeply analyzed and verified to ensure sealing under high-pressure conditions.The developed valve control system uses Si-emens PLC and related software to write control programs,achieving precise control.In the event of a hydraulic failure,the system automatically switches to the helical transmission actuator,ensuring the continuity and reliability of operations.
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