How to adjust the horizontal single stage double suction split case pumps flow?

Horizontal single stage double suction pump belongs to a large flow of water water pump, so will open in the double suction pump flow to adjust, so when making adjustment in, we should pay attention to some problems and adjusting method. Because of improper adjustment method raises the post-holiday effect and the performance of the pump will be badly hurt. This article mainly analysis the horizontal double suction pump flow of three kinds of effective ways of regulation.

change in horizontal single-stage double-suction open characteristic curve of pump pipe road

change of pipeline characteristic curve of pumping flow the simplest method is to use the open pump discharge valve to control the open degree, its essence is to change the position of the pipeline characteristic curve to change the pump working point.

change the horizontal single-stage double-suction open pump characteristic curve in the

according to the proportion of law and the law of cutting, change double suction centrifugal pump speed, double suction centrifugal pump structure, Such as cutting impeller diameter, etc. ) Both methods can change the double suction centrifugal pump characteristic curve, so as to achieve adjusting flow ( At the same time change the head) The purpose of. But to have to work double suction centrifugal pump, double suction pump to change the structure of the method is not very convenient, and due to change the structure of the double suction centrifugal pump, reduces the commonality of double suction centrifugal pump, although it at some point to adjust economic convenient traffic, is rarely used in production. Just how changes in centrifugal pump flow of speed adjusting method. Analysis, when change the double suction centrifugal pump speed adjusting flow rate decreased from Q1 to Q2, the double suction centrifugal pump speed ( Or motor speed) Reduced to n2 from n1, speed for the pump characteristic curve of Q - under n2 H and pipeline characteristic curve He = H0 + G1Qe2 ( Pipeline characteristic curve does not change) Point to point A3Q2, H3, A3 by speed adjusting flow after new working point. The adjustment method of adjustment effect, quick, safe and reliable, can prolong the service life of double suction centrifugal pump, save electricity, reduce speed running also can effectively reduce the double suction centrifugal pump NPSH NPSHr, away from the pump cavitation area, reducing the possibility of a double suction centrifugal pump cavitation occurred. The disadvantage is that change the pump speed by variable frequency technology are needed to change the prime mover ( Usually the motor, The rotational speed, the principle of complex, investment is bigger, and the flow adjustment range is small.

horizontal single stage double suction split case pumps in series, and even the adjustment way

when a single double suction centrifugal pump can't meet delivery task, a double suction centrifugal pump in parallel or in series can be used. With two sets of the same type of double suction centrifugal pump in parallel, although the head changed little, but increased the total transportation flow, the total efficiency of the pump in parallel with a single pump efficiency is the same; Double suction centrifugal pump series when the total pressure head, flow rate change is not big, the total efficiency of the pump with single pump efficiency is the same.

If you are looking for convenient, affordable , JT brings plethora of options to suit your requirements and budget both. Check J&T INDUSTRY for more details.
To be the safest, most progressive domestic submersible pump, relentless in the pursuit of customer and employee excellence.
comes in a vast array of styles and pool cover drain pump depending on which winter cover pumpis used.
We persevere in keeping the customers pleasant and supporting them with submersible pump at a reasonable price.