Boiler feed pump outlet pressure calculation formula of the boiler feed water pump outlet pressure calculation examples

Boiler feed water pump outlet pressure mainly depends on the boiler steam drum pressure of work, in addition to the water pump must also overcome the following resistance: the resistance of the diaphragm gate, the resistance of the economizer, boiler feed water pump outlet water inlet and the static water level.

boiler feed pump unit energy gained by the weight of the liquid through the pump head. lift, including suction approximation for the pump outlet and inlet pressure difference. Head with H said, the unit is m ( m) 。 The pressure of the water pump with P said, the unit for the Mpa ( Mpa) 。

boiler feed water pump outlet pressure calculation formula:

according to the experience estimation, minimum of boiler feed water pump outlet pressure peak pressure of 1. 25 times.

boiler feed water water pump outlet pressure and lift the conversion formula: H = p/rho.

energy gained by the unit weight of the liquid through the pump head. lift, including suction approximation for the pump outlet and inlet pressure difference. Head with H said, the unit is m ( m) 。 The pressure of the pump with P said, the unit for the Mpa ( Mpa) 。

boiler feed water pump outlet pressure and lift the conversion formula: H = p/rho;

p: pump outlet pressure Pa;

rho: the density of water 1000 kg/m3, or pumping fluid density;

H: the eventually head of boiler feed pump, the unit is m.

the boiler feed water pump outlet pressure calculation case:

such as boiler feed water pump outlet pressure is 1 kg/cm2 (p Say 1 kg of water pressure in the control engineering) , the general condition of the density of water is 1000 kg/m3, there are:

H = p/rho;

       =( 1kg/ cm2) /( 1000公斤/立方米) ;

       =( 10000kg/m2) / ( 1000 kg/m3) ;

       =10m；

the boiler feed water pump outlet pressure calculation results:

through the above formula can be concluded that: 1 mpa pressure is equal to about 100 m head, 1 kg of water pressure to zero. 1MPa。 Which is 1 mpa = 100 m = 10 kilograms.

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