Underwater gas and oxygen overpressure discharge device

Abstract

The invention relates to an underwater gaseous oxygen overpressure discharging device. The device comprises a pressure-resistant cylinder; a pressure-resistant cover is fixedly connected to the upperportion of the pressure-resistant cylinder; a structural welding seat plate is fixedly connected to the lower portion of the pressure-resistant cylinder and welded to a pressure-resistant shell; an installation seat plate is fixedly connected to the other end of the structural welding seat plate; a hole is formed in the center of the installation seat plate and matched with a sealing cylinder; anoverpressure discharging pipe, an overflow pipe and a filling pipe which are installed in the pressure-resistant cylinder are further included, one end of the overpressure discharging pipe communicates with an external discharging pipe through a pipeline connecting assembly, and the other end of the overpressure discharging pipe penetrates through and extends out of the sealing cylinder to communicate with an overpressure discharging pipeline of a liquid oxygen tank. One ends of the overflow pipe and the filling pipe are connected with blocking caps, and the other ends of the overflow pipe andthe filling pipe penetrate through and extend out of the sealing cylinder. By means of the underwater gaseous oxygen overpressure discharging device, an underwater carrying platform works deeply under the water and overpressure of gaseous oxygen of the liquid oxygen tank occurs, the overpressure gaseous oxygen is discharged to the outside of the platform, and thus the safety of the underwater carrying platform.

Description

technical field [0001] The invention relates to the technical field of safety and security of an underwater carrier platform, in particular to an underwater gas and oxygen overpressure discharge device. Background technique [0002] Based on the current underwater use of fuel cells at home and abroad, proton exchange membrane fuel cells are more widely used. Its main working principle is to directly convert chemical energy into electrical energy by consuming hydrogen and oxygen. For the underwater carrier platform, the oxygen required by the fuel cell is generally stored in the liquid oxygen tank in the form of liquid oxygen. When in use, the liquid oxygen stored in the liquid oxygen tank is heated and vaporized by the liquid oxygen vaporizer into a suitable stack with a certain pressure. Oxygen used. [0003] The space in the liquid oxygen tank mainly includes two parts: the liquid oxygen space and the gas phase space. Taking a liquid oxygen tank with a liquid oxygen filli...

AI Technical Summary

Problems solved by technology

Although this insulation measure has been taken, if the fuel cell stack in the deep-sea carrier platform does not work, the self-evaporation of liquid oxygen will cause the pressure in the liquid oxygen tank to rise to the design pressure in less than one day.

In addition, the liquid oxygen tank will also be subject to external uncontrollable factors such as vibration, shock, substandard welds, thermal expansion and contraction, and failure of the liquid oxygen evaporator, which will lead to vacuum damage and thermal insulation failure. The liquid oxygen in the liquid oxygen tank will quickly Vaporization causes the internal gas and oxygen pressure to rise rapidly

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