Self-advancing high-pressure water jet cleaning device is mainly composed of high-pressure reciprocating pump, high-pressure hose, cleaning nozzle, safety valve, pressure-relief valve, foot switch and other accessories.
Wear is one of the main forms of metal mechanical parts failure. The high-chromium cast iron has a higher hardness to resist abrasive wear, and has a certain corrosion resistance and a certain impact resistance, with a certain heat treatment process can get better machinability. Therefore, to study the wear resistance of high-chromium cast iron and to select a reasonable heat treatment process to improve its wear resistance and extend its service life are urgently needed to develop high-chromium cast iron.
The system has successively cleaned the pipelines of many mines, power plants, and smelters, and achieved satisfactory results. Among them, the Leshi Aluminum Smelting Plant in Australia successfully cleaned multiple sections of spiral cooling pipes with a length of more than 300m.
High-pressure water jet has great impact damage ability, can compress, shear and tear the body, 25MPa water jet can penetrate human skin and muscles. Therefore, when using high-pressure water jets for pipeline cleaning, the work area should be closed and no other persons are allowed to enter. Each cleaning system should be equipped with 2 operators working at the same time, and wear personal protective equipment. One person works, one person observes, and in case of emergency, the system is immediately relieved of pressure.
Conclusion
The self-advancing high-pressure water jet pipeline cleaning technology can meet the requirements of mine water supply, mine fire protection grouting, gas drainage, power plant water supply and cooling, smelting plants, chemical plants and other long pipes, curved pipes and spiral pipes. Because the system does not require the pipeline to be dismantled for cleaning, it greatly shortens the shutdown and maintenance time. The high-pressure jet cleaning process uses water as a medium. The cleaned water and scale can be recycled after treatment, reducing environmental pollution, and there is no chemical cleaning on the equipment, personnel and pipeline corrosion.
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