Jet fuel cabin high-speed ventilation valve and ventilation system for ship

Abstract

The jet fuel cabin high-speed ventilation valve for the ship comprises a pressure valve assembly and a vacuum valve assembly, the pressure valve assembly comprises a pressure valve body, a pressure valve rod, a valve disc and a punching and lifting disc, and the pressure valve body comprises a pressure valve upper valve body, a pressure valve middle valve body and a pressure valve lower valve body which are vertically arranged in sequence from top to bottom and communicate with one another; the top of the pressure valve upper valve body is communicated with the outside, and the bottom of the pressure valve lower valve body is installed on a vertical ventilation pipeline and communicated with the ventilation pipeline. The pressure valve rod is installed on the central axis of the pressure valve body and can vertically move in the pressure valve body. And the centers of the punching and lifting disc and the valve disc are fixed on the pressure valve rod. The invention further discloses a jet fuel cabin ventilation system for the ship. The high-speed breather valve has the beneficial effects that the punching and lifting disc is additionally arranged, the valve can be quickly started, jumped and exhausted during medium and small flow, the valve can stably fall back after being exhausted, and the operation safety of the high-speed breather valve is greatly improved.

Description

technical field [0001] The invention relates to a venting valve, in particular to a high-speed venting valve and a venting system for a marine jet fuel tank. Background technique [0002] In order to ensure the continuous deployment of ship-based or carrier-based aircraft, some large ships are usually equipped with a large number of jet fuel tanks, and the jet fuel tank ventilation system is used to ensure that jet fuel is injected and adjusted on the ship. Storage safety during barge and other operations. [0003] my country's aircraft-carrying ships mainly adopt the ventilation method combining conventional oil tank breathing valve and fireproof ventilation head. The discharge of combustible mixed gas in the oil tank at the ventilation outlet is slow and easy to accumulate, which greatly increases the explosion of combustible gas in the ventilation part. risk. On some civil oil tankers, a ventilation system combining an oil tank breathing valve and a ventilation head, or ...

AI Technical Summary

Problems solved by technology

[0005] In view of the limitations of the current domestic and foreign high-speed vent valves in the venting of large oil tanks with explosion-proof safety and special working environment requirements, it is impossible to directly refer to them for use

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