Stainless Steel Vertical Multistage Pump

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Q:Can centrifugal pumps be idle? What's the status of the empty transfers?
The centrifugal pump can not be idle, idle will wear packing (packing seal, mechanical seal is almost not damaged) parts, also caused the seal ring, seal, etc. the balance disc wear quickly, and the temperature will rise sharply, causing damage; air transfer effects caused by transient overload voltage of the motor is large, if the motor can not automatically jump to motor will burn.Centrifugal pump mostly rely on the delivery of liquid lubrication and cooling seal of centrifugal pump, idling is empty load, is to open the inlet valve, close the exit valve operation can move, try reversing or empty load operation should be based on the inevitable time, pump specification shall prevail.
Q:How can I pump the motor insulation?
The cable head in the distribution box should be relieved. What's more, the motor insulation is not the pump insulation. Usually, just shake it in the middle of the water and the ground.
Q:How do I calculate the power of the pump?
Power P (kw) =9.81*Q (second cubic meter) *H (head, unit m) / efficiency;The efficiency can be found on the pump nameplate or sample.This is the rated power, if the head down, the flow increases, the power will increase, so the actual motor power is often much larger than this calculation.Generally buy pumps are equipped with motors, manufacturers can refer to the same model or similar models of motor power.
Q:Water pump motor overload
Flow multiplied by the head is powerFlow can reach less than 180 parties, efficiency is reduced, the size of the impeller can be adjustedAnswer the question, add, depends on the structure of the pump, if the vacuum pump, as you imagine
Q:Why is the minimum liquid temperature allowed at 2 DEG C instead of 0?
Is zero freezing?
Q:What is the 10KV pump unit?
As the name suggests, the water pump unit is a number of pumps, and 10kV is the voltage level. According to the voltage level, what you call a water pump should be a pump with relatively large power
Q:How to measure the temperature of pump body?
It's the temperature of the pump motor!In addition to large pumps, water temperature is rarely monitored. Even so, the temperature of the pump body will not be measured.Since the water pump pumping, the leaves, vanes and shells are no temperature rise, the temperature is mainly concentrated in the bearing: small pumps rely on the work medium can play a role in reducing friction heat;Heating large pump mainly in the thrust bearing and guide bearing, if the bearing is lubricated by water cooling water, if there is oil lubricated oil cooling equipment specially, temperature monitoring of bearing large pumps can be installed in the pump thrust bearing temperature sensor to monitor the varnay.
Q:Think of several households sharing a pump
The electromagnetic valve is estimated to be expensive to death ~!You set up a high water tank in the middle of the user. The pump is pumped to the water tankIn each according to the water meter, then according to water allocation total cost ~ ~ ~!
Q:When using a frequency converter to adjust the pump, what is the relationship between the change of the speed and the efficiency of the pump?
First, the wind pumps such load is usually called square torque load, which is in a certain range of speed and torque is roughly proportional to the square of the speed of N, TL=kn^2, power and speed is proportional to the cube, the energy-saving effect is obvious. Can also be described according to what you pump model, the pump is divided into piston pumps, screw pumps, impeller pumps and centrifugal pumps.Secondly, under the standard condition, the higher the efficiency of the centrifugal pump, the higher the speed determines the size of the centrifugal force, the higher the speed, the greater the centrifugal force, and vice versa. Plunger pump and screw pump is not the same, the speed of speed and efficiency basically no impact. Third, in addition to buying the pump, you can let the manufacturer give you an FM curve, so you can see the frequency of mediation when the water pump efficiency changes
Q:Diving pump voltage
Absolutely not, because 220V is not the same as the 380V waveform. Submersible pump single-phase motor is generally single-phase capacitor motor. The working principle is different from that of the single-phase 380 motor. If the power capacity is enough, it is recommended that you increase the wire (you can buy a line and go to use, to avoid waste), preferably with copper wire.

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