Hydrogen production and hydrogen supplement system of hydrogen cooling unit and working method of hydrogen production and hydrogen supplement system

Abstract

The invention discloses a hydrogen production and hydrogen supplement system of a hydrogen cooling unit and a working method of the system, and belongs to a hydrogen production and hydrogen supplement system. The hydrogen production and hydrogen supplement system comprises a water tank, the water tank communicates with an ion purifier through a pipeline, the ion purifier communicates with a filter through a pipeline, and the filter communicates with a PEM water electrolyser through a pipeline; two electrodes of the PEM water electrolyser communicate with a first gas-liquid separator and a second gas-liquid separator through pipelines respectively, the first gas-liquid separator communicates with a first gas analyzer through a pipeline, the first gas analyzer communicates with a hydrogen tank through a pipeline, the hydrogen tank communicates with a first gas filter through a pipeline, and the first gas filter communicates with a first compressor through a pipeline; and the first compressor communicates with a drying tower I through a pipeline, and the drying tower I communicates with a low-pressure hydrogen storage tank and a high-pressure hydrogen cylinder group through pipelines. The system is scientific and reasonable in structure, automatic hydrogen supplementing is achieved, stable operation of the generator set can be guaranteed, hydrogen sealing is facilitated, and the safety of the system can be greatly improved.

Description

technical field [0001] The invention relates to a hydrogen production and replenishment system, in particular to a hydrogen production and replenishment system for a hydrogen cooling unit. Background technique [0002] Generator sets are an important part of large thermal power plants. During the actual operation of the generator set, the motor winding and the iron core generate a lot of heat due to power loss. In order to avoid motor burning accidents caused by excessive motor temperature, a coolant is required to cool the generator set. Commonly used coolants include air, water, hydrogen, oil and other materials, among which hydrogen has high thermal conductivity (thermal conductivity at 25°C It is 0.182 W / (m·K), which is 8.4 times the thermal conductivity of air), small specific gravity, fast diffusion, easy to transport and can be recycled, and is a very effective gas cooling medium. For this reason, the current 330-660MW thermal power units use hydrogen as the cooling...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a hydrogen cooling unit hydrogen production and hydrogen replenishment system with a reasonable structural design and its working method, which solves the problem of hydrogen replenishment at intervals, which is commonly used at present. After a certain pressure, there are problems in replenishing hydrogen to the rated pressure

This method of supplementing hydrogen will cause instability and fluctuation of hydrogen pressure, resulting in instability of heat conduction and fluctuation of hydrogen sealing pressure. The fluctuation of winding temperature and wind friction resistance will affect the energy saving of the generator, the life of winding and the Problems such as oil leakage of the oil seal

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