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The design, testing and installation of the water spray device are in the water spray device, and the design and manufacture of the nozzle is the most critical. The designed nozzle atomization effect will directly affect, even the operation of the equipment is safe. This is because the design of the nozzle is related to the amount of water and the arrangement in the gas line, and the position of the installation is related to whether the sprayed water can directly enter the compressor impeller inlet. To this end, after repeated calculations, simulation tests and improvements, the design has been developed based on the experience gained. Imported valve, when the air compressor is running, the water is under the action of pressure, and after the water tank is atomized through the pipeline to the nozzle, it enters the high-speed rotating impeller flow channel together with the compressed air, and the impeller rotates at high speed to hit the water droplet, and the impeller blade is placed on the impeller blade. The attachments are washed away and the surface of the impeller blades is cleaned after a certain period of time. During the rinsing process, the trap of the large cooler should be opened, and the discharged water can be observed to know the rinsing condition. It is worth noting that the water sprayed from the nozzle must be atomized evenly, and it must be filled with the flow path. Only in this way can the safety of the equipment running during the online water spray cleaning be ensured. Shaft vibration change list of water spray test date Unit unit air volume 3 level 4 level cleaning before cleaning After cleaning before cleaning After cleaning, it can be seen that the water spray cleaning of DH45 and DH760 air compressors has been successful. The unit runs smoothly when spraying water. This also shows that the atomization effect of the nozzle has reached the expected requirements; when cleaning, it is found that the water discharged by DH45 is much more turbid than the DH760. Therefore, when the parking opportunity of the air compressor is available, the water spray test is carried out and the inspection effect is uncovered. At the same time, it is also planned to install cleaning devices at the level 1 and 2 inlets of the air compressor to clean the impellers at all levels. According to the test situation, it is determined that the impellers of each stage are regularly cleaned once every two months, and each time each stage uses about 100kg of water for 10 minutes. The modern high-speed data acquisition system can perform various spectrum analysis on various parameters, so the real-time online monitoring of the surge characteristic frequency f can be used to monitor the surge condition.
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