Generation of cavitation erosion of conduit centrifugal pump and installation height are concerned

The welcome visits Shandong Hairui Zhonglian Pump Industry Co. , ltd. Website, the centrifugal pump that my company is a major produces manufacturer. When you need centrifugal pump type selecting, we will provide the before-sales service such as price of centrifugal pump model, centrifugal pump, in order to offer your referenced alternative. This product information is the knowledge that about cavitation erosion of conduit centrifugal pump height of generation and installation concerns:

Because leave the action of mental efforts,conduit centrifugal pump can send out water is. Before water pump is working, pump housing and wirereinforced suction hose must coal tub full water forms vacuum state, when impeller twirl, blade makes water rotate quickly, rotating water flies from inside impeller below the action in centrifugal force, after the water inside pump is cast to go out, the central part of impeller forms vacuum area. The water of fountainhead is pressed in atmosphere force (or hydraulic) overwhelmed through managing a network below action inside wirereinforced suction hose. Such loops unceasingly, can realize successive pump water. ConduitCentrifugal pumpProhibit running for nothing, before starting must to after water is full of inside pump case, just can start, otherwise pump housing general cannot be finished absorb fluid, cause pump housing to give out heat, shake, do not give water, generation idling, cause damage to water pump (abbreviation gas ligature) cause equipment accident.
One, the cavitation phenomenon of conduit centrifugal pump
The cavitation phenomenon of conduit centrifugal pump is to because be in,point to liquid be feedinged carry the saturation below temperature to evaporate steam pressure is equal to or be in under pump entrance (be in actually for blade entrance) pressure and partial vaporization, cause pump generation noise and shake, serious when, of the discharge of pump, pressure head and efficiency showing drop, apparent, cavitation seems conduit centrifugal pump to operate place not to allow to happen normally now. The installation that avoiding the hinge that cavitation phenomenon produces is pump wants highly correct, when should carrying the easy volatile liquid with higher temperature especially, should notice more.
Hs1 the value takes the place of to get installation height into type
Hg=Hs1-Hf0-1=0.78-1.5=-0.72m
Hg is negative worth, state pump should be installed it is under cistern fluid face, compare fluid face low 0.72m at least.
2, the installation height Hg of conduit centrifugal pump
Allowing Hs of suction vacuum height is the bigger vacuum that P1 of pressure of point of entry pointing to pump can allow to achieve is spent, and actual permission value of Hs of suction vacuum height is not a basis type calculative is worth, however byConduit pumpThe value that manufactory home test determines, this value is added at be being checked for the user in pump example to use. What should notice is the Hs that gives out in pump example the value is to use clear water to be working medium, operation condition is 20 ℃ and the value when reaching pressure to be 1.013-105Pa, when operation condition and working medium are different, need to undertake conversion.
(1) carries clear water, but operation condition and experimental condition are different, can depend on conversion leaving type
Hs1=Hs+(Ha-10.33)-(Hs1-0.24)
(When 2) carries other liquid to reach condition of person of villain in drama to all differ with experimental condition when liquid be feedinged, need to undertake two paces conversion: The first pace is depended on on type general by the Hs1; of the fish in pump example the 2nd pace depends on next type to become Hs1 conversion Hs
From safe angle consideration, the value of actual installation height of pump should be less than computational value. Again, when the Hg that should calculate is negative worth, the position of air suction opening that shows pump should be under face of storage tank fluid.
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