The central air conditioning cooling water pump

cooling water pump, central air conditioning cooling water pump

a, central air conditioning cooling water pump description

cooling water pump is a kind of used to power the heat exchanger in cooling water pumps. Head needed is determined by the cooling system class punishment. The cooling process is divided into dry type cooling and wet cooling. Head needed in 5 ~ l5m normally, and if the cooling tower operation mode, while increasing lift for 20 - - 35m。 Conveying flow depends on the cooling process, heat exchanger, also depends on the form is used for central air conditioning.

conveying flow reference

& middot; Fresh water cooling

l00 - traditional power stations - 120 mm3 / hMw

plant l40 - 160立方米/高分子量

· Indirect air cooling

80 - traditional power stations 100 m3 / hMW

plant - 120 L40m3 / hVW

3, the structure of impeller

5 - required 35 m lift range can be done by three types of impeller.

specific impeller head range

& middot; Lift is not higher than l0m usually use the axial flow impeller of propeller ( Than revolutions ns> 150 r / miii)

· 10 - lift range 25 m, use half axial flow impeller propeller ( 100 r / min < ns / 150 r / min)

· 10 - lift range Use the diagonal impeller ( Mixed flow impeller) ( 70 r / min < ns< 150 r / min)

three types of impeller can be used multistage, so that we can improve the lift range. But the multistage type will cause costs have risen sharply. Consider using multistage.

4, the structure of type

tubular pump and volute pump is usually used as cooling water water pump, had completely made of metal materials with vertical axis.

rare cases also use submersible pump, such as high temperature submersible pump. Also adopted concrete pump shell. Part or all of these pumps in the pump shell made of concrete. See figure 6 and figure 7

tubular pump has the following forms of impeller:

& middot; Mixed flow impeller figure 1

& middot; Mixed flow impeller propeller see figure 2

& middot; See figure 3 mixed flow impeller

volute pump impeller are:

& middot; Mixed irrigation screw impeller

& middot; See figure 4 mixed flow impeller

ship with specific see multi-stage pump, cooling water pump together with the volute pump also used the double suction impeller see double suction centrifugal pump.

it is recommended to use: air conditioning water circulating pump

cooling water pump products: machine cooling water pump

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