Explosion-proof anti-corrosion pump classification and lift calculation formula

Explosion-proof anti-corrosion pump head is the unit of the liquid of heights or give energy called pump lift ( Also called head) , the unit: m liquid column. Explosion-proof anti-corrosion pump with the water pump rotation speed, the size of the structure and the diameter of the impeller, and line conditions and other factors. The change of lift pump flow will vary directly.

explosion-proof anti-corrosive pump classification explosion-proof anti-corrosive pump head points: suction lift ( Under the head) And the water head ( On the head) , total head ( The actual head/net head) And the device head four. Suction head: it is to lower the height of the water from the pump center, also called the head; Water head: it is from the height of the water water pump center to the upper surface, also called on the head; Total head: it is from the lower to the upper surface of the water height, also is under the head and the sum of head, also called the actual lift or net head; Unit head: is the total head and the entire pipeline, water pump system resistance loss.

formula of explosion proof corrosion resistant pump explosion-proof anti-corrosive pump lift with experimental measurement, namely in the pump inlet to a vacuum gauge, the exit to a pressure gauge, excluding the two table section on the kinetic energy of the poor ( The Δ u2/2 g = 0) Without considering the energy loss between the two tables section ( ∑ f1 - namely 2 = 0) 。 Under the pump head available equation, pay attention to the following two points: 1, the type of p2 for the pump outlet pressure gauge reading ( Pa) ; P1 for the pump inlet vacuum gauge readings ( Negative gauge pressure value, Pa) 。 2, pay attention to distinguish between centrifugal pump lift ( Head) And the height of the rally in two different concepts. head is refers to the unit weight after the fluid through the pump energy. Between the two cross section in a piping system ( Including pump) List the Bernoulli equation and collates available type of H as the head, but only mean Δ z a rally in height. Case 2 - 1 is the determination of a centrifugal pump lift. Working medium is 20 ℃ water, measured flow rate is 60 m ^ 3 / h, the pump inlet vacuum gauge reading to zero. 02 mpa, the outlet pressure gauge reading is 0. 47Mpa( Gage pressure) Vertical distance between the two tables, known to 0. If 45 m pump suction pipe and pressure pipe diameter is the same, try to calculate the pump lift. Solution: check 20 ℃ water density 1. 0*10e3kg/m3，       h=0. 45米( 1 mpa is equal to about 100 m water column) P export = 0. 47Mpa ( 0. 47 * 100 m water column = 47 m water column) P = - imports 0. 02Mpa ( 0. 02 * 100 m water column = 2 m water column) Rho for liquid density H = H + ( P export - P import) /ρg = 0。 45 + ( 0. 47 * 10 e6 ( - 0. 02*10e6) ) /( 10e3*9. 8) = 50. 45m( Water column)

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