Hydrogen supply system and method for offshore nuclear power platform

Abstract

The invention discloses a hydrogen supply system for an offshore nuclear power platform, which includes a hydrogen tank, a hydrogen decompression valve group, a hydrogen supply pipeline assembly, a nitrogen tank and a nitrogen decompression valve group, and the hydrogen tank is respectively connected to the hydrogen gas charging pipeline and the first A hydrogen supply pipeline, the first hydrogen supply pipeline communicates with the inlet end of the hydrogen pressure reducing valve assembly; the nitrogen tank communicates with the nitrogen gas charging pipeline and the first nitrogen supply pipeline respectively, and the first nitrogen supply pipeline The pipeline communicates with the inlet end of the nitrogen pressure reducing valve group; the hydrogen supply pipeline assembly includes a sleeve and a second hydrogen supply pipeline built in the sleeve, the two ports of the sleeve are closed, and the second hydrogen supply pipe Both ends of the pipeline protrude from the casing, and an annular channel for nitrogen gas flow is formed between the inner wall of the casing and the outer wall of the second hydrogen supply pipeline. The beneficial effects of the present invention are as follows: by real-time monitoring of the pressure of the hydrogen supply pipeline and the casing, it is judged whether there is leakage in the gas supply pipeline; the hydrogen in the hydrogen supply pipeline is quickly replaced with inert nitrogen, and the hydrogen supply system on the ship is improved. security.

Description

technical field [0001] The invention relates to an offshore mobile nuclear power platform, in particular to a hydrogen supply system and method for an offshore nuclear power platform. Background technique [0002] The offshore mobile nuclear power platform is a new type of nuclear-powered functional ship in recent years. The ship has autonomous navigation capabilities and is a practical marine nuclear power platform that meets the requirements of deep sea use. It can provide high-quality power resources, water sources and heat sources to the outside world. The hydrogen supply system is an important guarantee system for the primary circuit nuclear auxiliary system of the offshore small nuclear reactor. It safely stores, depressurizes and transports hydrogen on the mobile offshore nuclear power platform, and provides qualified hydrogen to the primary circuit. Used for unit hydrogen cooling and chemical and volume control systems. [0003] At present, the known domestic and fo...

AI Technical Summary

Problems solved by technology

The explosion range of hydrogen in the air is wide, 4% to 75% (volume fraction), so the hydrogen-air mixture is prone to deflagration, and the hot gas generated by the deflagration expands rapidly, and the shock wave formed will cause casualties to personnel and damage the surrounding environment. equipment causing damage

[0004] The ship is completely different from the land environment. There will be vibration and shock when the ship moves. Long-term vibration and shock will damage the sealing of the pipeline and cause hydrogen leakage.

However, the system on the ship is in a closed environment with no air circulation. Once the leaked hydrogen gas accumulates, the hydrogen-air mixture formed is prone to deflagration.

The current norms and standards for onshore hydrogen supply systems do not have a method for automatic monitoring of hydrogen leakage from time to time, nor a method for quickly and safely replacing hydrogen

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