Hydrogen compressor shaft head

Comparison of several maintenance methods for wear of hydrogen compressor shaft head

The hydrogen compressor is mainly used to discharge the hydrogen collected from the water electrolysis tank to the compressor outside the ship. During the operation of the equipment, factors such as bearing lifespan issues or mechanical seal static ring fitting problems often cause wear on the hydrogen compressor shaft head.

Common problems such as wear and tear of transmission components are extremely common in equipment failures. The commonly used repair methods include welding, electric brush plating, thermal spraying, carbon nano polymer material technology, etc. The most economical, fast, and effective repair process can be selected according to the wear size and form of the hydrogen compressor shaft head to restore operation. Let’s analyze the characteristics of these maintenance methods in detail:

1. Characteristics of welding repair process: After welding, machining is a traditional method commonly used for repairing the wear of hydrogen compressor shaft heads. However, this process cannot be implemented for on-site online maintenance, requiring the equipment to be disassembled as a whole, with a long repair cycle and high labor intensity. During the repair process, there is a concentration of thermal stress, which can easily lead to bending deformation, cracking, and even fracture of the shaft during use.

2. Characteristics of electric brush plating process: The equipment is simple, no plating tank is required, and it is particularly suitable for local electroplating of large equipment on site. The bonding strength of general brush coating can meet the quality requirements; The coating has high hardness but low porosity; Low energy consumption and minimal environmental pollution. However, the thicker the thickness of the electric brush coating, the easier it is to peel off, resulting in poor application effect and limited application range.

3. Characteristics of thermal spraying process: Thermal spraying refers to a series of processes in which fine and dispersed metal or non-metal coating materials are deposited onto a prepared substrate surface in a melted or semi melted state, forming a spray deposition layer. Its limitation is that it cannot be repaired on-site and still requires machining after spraying, resulting in low efficiency and significant limitations in the application of large shaft head wear.

4. Characteristics of Sorel Carbon Nanopolymer Material Technology: The material is not limited and can be metal or non-metal; As long as the matrix has strength, the repair size and thickness are not limited; During the repair process, there is no temperature change in the substrate material, and no stress or deformation is generated; The operation process is flexible and simple, and the construction is convenient and fast; Can be repaired online to avoid prolonged downtime; After repairing the assembled components, the fitting area can reach 100%; Low repair cost and short repair time.

In summary, traditional methods face equipment problems such as sudden emergencies, large equipment, and complex disassembly, which are obviously beyond their capabilities and difficult to achieve online repair. The use of carbon nano polymer materials can effectively solve the difficulties encountered by these traditional methods.