Water ring vacuum pump cavitation prevention - unit

water ring vacuum pump unit often suffer from erosion of water vapor in application, this is our usual said cavitation condition, if not to figure it leads to a lot of damage, damage performance, this will give everyone summary of cavitation and prevention, to master it.

1, water ring vacuum pump units long-term overload operation; Summer cooling circulating water or cooling water yield is too small to cause high temperature heat exchanger refrigeration effect is poor, water ring vacuum pump will be running under high vacuum, is close to or at the suffocated run;

2, because of physical knowledge, under the temperature of a certain standard, the higher the vacuum, the higher the temperature, close to the boiling of the water in the water pump and can cause a lot of bubbles, the bubbles of the split with the whole process will lead to cavitation in a centrifugal impeller destroyed, damaged rotor dynamic balancing of the centrifugal impeller, pump shell due to vibration, vibration bad vacuum pump ancillary machinery and equipment, and will spread the cavitation noise is very big, this kind of situation more serious damage to the safety of water ring vacuum pump unit operation and safety operation of steam turbine unit;

3, to deal with cavitation problem, reduce the cost is very big, temperature reducing the vacuum degree also is for condensing steam through pressure more unlikely, that this will work more serious damage to the unit load capacity, idealized method is in tableland temperature and vacuum system software will not change under the condition of cavitation caused will process;

4, better choose is at present stage water ring vacuum pump unit modified air atomizing nozzle, full extraction characteristics will be better, so the condenser vacuum still can ensure the current level or higher, but the internal vacuum degree in just 12 kpa ( Vacuum in 3 - the system software 8 kpa category) , as can be reasonably to prevent cavitation.

water ring vacuum pump unit if appear cavitation problem, we must according to the different situation in order to develop different solutions, so before we solve difficult, should first learn to distinguish between what's the reason it is very easy to cause cavitation, then can be symptomatic treatment.

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