Matching relationship between model and use efficiency of submersible electric pump

Shanghai WeiHu(WEL) Pump Industry Co., ltd., is a professional production of the development, production, sales, manufacturing all kinds of submersible pumps, submersible motor, stainless steel pump, hot water pump and auxiliary equipment of the scale of modern professional production of high-tech enterprises. The company has a complete production, testing technology and equipment, the main production of 150QJ, 200QJ, 250QJ, 300QJ and other series of submersible pumps and ancillary equipment.

Submersible pumps of different sizes have different scope of use, any of the provisions of submersible pump nameplate on the flow and head is the submersible electric pump rated the best point is this submersible pump efficiency is high.

Along with the different structure form of the submersible pump, the characteristics of the submersible pump are different. The centrifugal pump or mixed flow pump, when the use of the head exceeds the rated head, shaft power of pump to reduce, when using the head below the rated head, shaft power of pump required increases, when the use of the head a lot lower than the rated head, shaft power of pump required will be greatly increased. At this time, the load of the electric submersible pump is increased, the stator current is increased, and the stator winding tends to overheat.

If there exists a submersible pump long time low lift and large flow operation, the stator winding heating is very powerful, often burn out the motor. The axial flow pump, the characteristics of the opposite; when using the head below the rated head, shaft power of pump to reduce, when the use of the head exceeds the rated head, shaft power of pump required increases, when the use of the head increased more than the rated pump head, shaft power will be greatly increase. At this time, the stator winding of submersible electric pump will overheat. If you are running in high lift axial flow submersible pump long time heating, the stator winding is very powerful, often burn out the motor.

Submersible pump generally in the normal operation of 0.7 - 1.2 times the rated flow range (submersible sewage pump can operate normally in the 0.7 - 1.3 times the rated flow rate range), beyond this range, could cause an overload, thus requiring the user to select and use submersible pump, we must consider the appropriate scope of use. Especially for multi-stage submersible electric pump, more need to pay attention to: high lift submersible pump, do not use too low head, so as not to waste electrical energy, and may damage the submersible electric pump.