Self balancing multistage pump compared with traditional multistage pump power saving maintenance cost analysis

Usually we distinguish self balancing multistage pump with traditional multistage water pump is to see if the difference between a balance device, the balance device have the balancing disc ring is traditional multistage pump; Without a self balancing multistage pump is balancing device, a balance disc disc friction loss and no balance return loss, so the pump efficiency is 5 - greater than that of the same category of traditional multi-stage pump 14%. Then the two pumps in power saving on the cost of energy efficiency have much difference, now let's example analysis.

changsha pump industry customer case:

the basic information of our customers: the design flow rate: 150 m3 / h, depth of 168 meters, about 60 meters, well flat tube adopts 6 steel tube, calculation of pipe damage of about 15 meters, design head of 603 meters. The medium is ≦ 80 ℃ water or similar physical and chemical property Yu Qingshui liquid;

customer requirements: selects the multi-stage pump, pump shell part of QT500 nodular cast iron material, use QT400 nodular cast iron impeller, shaft with 2 cr13 material; Shaft seal: packing seal; Domestic hawa los famous brand bearing; The whole machine design life for at least 30 years, including the main parts such as impeller life over 20000 hours, wear area parts of life over 8000 hours.

changsha pump technology department according to the existing data, you seriously studied, our product can completely meet all the requirements, make the following solutions: the proposal USES self-balancing mining wear-resisting multistage centrifugal pump, now provide two kinds of models to choose:

1) The owner selection: MD155 - 30 x7, this type of pump is balanced plate structure, series, simple structure, fault point; Large volume, high cost; Unit time high cost of doing work; Advantage is low speed ( 1480 r / min) ;

       ( 2) Recommended models: MD150 - 50X4( P) Self balancing mine multistage water pump, advanced structure, long trouble-free operation, low cost per unit time power, and energy saving effect is obvious.

through data analysis, the capacity and head the same 150 of 603 m, for example, the balance of multistage pump than traditional multistage water pump light to save electricity year is 23. 090000, saving the maintenance cost 2. 90000, comprehensive cost saving 21. 590000 yuan. In the end, the customer to choose a more efficient and energy saving of self-balancing multi-stage pump, concrete analysis is as follows:

since the balance of multistage pump and traditional multistage pump energy consumption analysis:

according to run 8000 hours, 1 yuan /

traditional MD type multistage pump: 369. 1 x8000x1 = 295。 280000

MD ( P) Self balancing multistage pump: 344. 4 x8000x1 = 275。 520000

self balancing multistage pump than traditional multistage pump to save electricity cost = 295. 28 - 275. 52 = 19. 760000

since the balance of multistage pump and traditional multistage pump maintenance cost analysis:

according to 10-year-old cost accounting: traditional MD type multistage pump:

0. 30000 + 3 X3. 50000 = 4. 40000

MD ( P) Self balancing multistage pump: 30000/2 = 1. 50000

self balancing multistage pump than traditional multistage pump saving the maintenance cost of 4 years. 4 - 1. 5 = 2. 90000

from the above comparison can be concluded that the balance compared with the traditional multi-stage pump, multi-stage pump main advantage lies in:

1. High efficiency and energy saving, power saving effect is obvious because of the shaft power is reduced, the water pump power consumption per unit time is reduced, operation cost is greatly reduced;

        2. Advanced structure, free maintenance cycle is long as there is no balance device, pump parts, long trouble-free operation time, less maintenance cost greatly reduced.

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