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 comprises a hydrogen tank, a hydrogen pressure reducing valve group, a hydrogen supply pipeline assembly, a nitrogen tank and a nitrogen pressure reducing valve group; the hydrogen tank is respectively communicated with a hydrogen inflation pipeline and a first hydrogen supply pipeline, and the first hydrogen supply pipeline is communicated with the inlet end of the hydrogen pressure reducing valve assembly; the nitrogen tank is communicated with a nitrogen inflation pipeline and a first nitrogen supply pipeline, and the first nitrogen supply pipeline is communicated with the inlet end of the nitrogen pressure reducing valve set. The hydrogen supply pipeline assembly comprises a sleeve and a second hydrogen supply pipeline arranged in the sleeve, two ports of the sleeve are closed, the two ends of the second hydrogen supply pipeline extend out of the sleeve, and an annular channel used for circulating nitrogen is formed between the inner wall of the sleeve and the outer wall of the second hydrogen supply pipeline. The system has the beneficial effects that whether leakage exists in the gas supply pipeline or not is judged by monitoring the pressure of the hydrogen supply pipeline and the pressure of the sleeve in real time; and inert nitrogen is used for quickly replacing hydrogen inthe hydrogen supply pipeline, so that the safety of the hydrogen supply system on the ship is improved.

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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