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Shandong Hairui Zhonglian Pump Industry Co. , ltd. The blowdown pump that is a major produces manufacturer. When type selecting of client blowdown pump, manufacturer of my company water pump can provide the before-sales service such as price of pump of blowdown pump model, blowdown, in order to offer client reference, and manufacturer of my water pump can provide the service of product of custom-built pump industry for the client. This product information is the knowledge that produces cavitation harm about blowdown pump:
What is cavitation?
The liquid local pressure in pump drops when critical pressure, bubble can generate in the liquid. Cavitation is bleb gathers, the motion, dissension, whole process that kill. Critical pressure is close to vapour pressure commonly.
What harm does cavitation have?
A, shed a component to corrode too
Corrode a reason to have two:
Because bleb is undone,be when generation is high frequency (600~25000HZ) concussion, pressure is as high as 49Mpa, cause metallic surface occurrence machinery to denude;
2 because quantity of heat is emited when vaporization,be, thermoelectricity pool action produces hydrolysis, the oxygen of generation makes the metal oxidizes, produce chemistry to corrode.
B, Blowdown pumpFunction drops
Disturb and the energy exchange inside the impeller when blowdown pump cavitation is destroyed, the expression on external characteristic is Q-H curve, curve of Q-P, Q-n drops, serious when the current that can make blowdown pump medium is interrupted, cannot work.
To low specific speed, because narrow and the flow path between blade is long, once produce cavitation, bleb is full of whole flow path, function curve is met light.
To in high specific speed, flow path is short and wide, consequently bleb from produce progress to be full of whole flow path to need to transfer process, it is slow that corresponding function curve begins drop, the ability when some flow increasing later drops quickly.
Thank you very much to Shandong Hairui Zhonglian Pump Industry Co. , ltd. The visit of official website! Above is aboutBlowdown pumpProduce the introduction that cavitation endangers, still think to this problem like you deep one pace understanding, or the problem that has price of model of type selecting of product of other pump industry, water pump, water pump, water pump needs to solve, contact this water pump manufacturer please, my company still produces the pump below fluid, welcome you at any time seek advice.
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