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2028results about "Spindle sealings" patented technology

Manifold valve

A manifold valve according to the present invention includes a main body (1) and actuators (2, 3) each having a valve body (46, 47). The main body is formed with at least one set of a main flow passage-side valve chamber (17) and a secondary flow passage-side valve chamber (19) which are in communication with each other through a connecting flow passage (11), a branched flow passage (9) communicating with the main flow passage-side valve chamber, a-main flow passage (6) communicating with the main flow passage-side valve chamber through a main flow passage-side communication port (13) opening at a center of a bottom of the main flow passage-side valve chamber, and a secondary flow passage (7) communicating with the secondary flow passage-side valve chamber through a secondary flow passage-side communication port (15) opening at a center of a bottom of the secondary flow passage-side valve chamber. The main flow passage-side communication port and the secondary flow passage-side communication port are opened and closed by valve bodies (46, 47) of the actuators, respectively. Further, the connecting flow passage and the branched flow passage are structured such that bottoms thereof are substantially flush with those of the main flow passage-side valve chamber and the secondary flow passage-side valve chamber.
Owner:ASAHI YUKIZAI KOGYO CO LTD

Underwater hydraulic driven type flat plate gate valve

The invention discloses an underwater hydraulic driven type flat plate gate valve, wherein a flow passage is arranged in a valve body; the middle part of the flow passage is provided with a valve seat; a valve plate is arranged in the middle of the valve seat and is provided with a valve plate passage; the valve body is connected with one end of a valve cover; the other end of the valve cover is coaxially connected with a spring cavity shell, a hydraulic cylinder shell and a casing in sequence; a valve rod is arranged in an inner cavity of the spring cavity shell and penetrates through the valve cover to be connected with the valve plate; a limiting cylinder and a spring pressing plate are fixedly sleeved on the valve rod; the bottom end of the spring cavity shell at one end of a sealing pressing cap is provided with a limiting plate; a spring is arranged between the limiting plate and the spring pressing plate; one end of a piston in the inner cavity of the hydraulic cylinder shell is butted against the spring pressing plate, and the other end of the piston is fixedly connected with a super control rod; a pressure relief port is formed on an axis hole of the valve cover; the spring cavity shell is provided with a pressure compensation port; and the hydraulic cylinder shell is provided with a hydraulic inlet and outlet. The device has the advantages of simple structure, good sealing property, high reliability, automatic closing in case of failure and ROV (Remote Operated Vehicle) standby control function.
Owner:BAOJI PETROLEUM MASCH CO LTD +2
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