中英文翻译、文文献翻——译高压往复泵的特点.doc

外文资料 High-handed intercourse pump characteristic High pressure between 100 MPa moving back and forth responding to like pump sigmatism pressure in 10 MPa . It belongs to volume dyadic pump , the purpose drawing support from volume inside the cavity working coming to reach transportation liquid cyclicity change; The prime mover mechanical energy can by that the pump changes into the pressure transporting liquids directly; Only, the pump capacities depend on job cavity volume changing value and their change number of times within unit time , have nothing to do with to discharging pressure theoretically. The pump moving back and forth is to be backed by the piston advance and return movement within liquid jar job cavity (or passing the flexibility component cyclicity within the cavity working such as baffle , bellows makes job cavity volume produce cyclicity changes coming elastic-deformation). Pump on structure, moving back and forth, Whose characteristic is summed up as follows: Microtime rate of flow is systolic. This is in the pump because of being moving back and forth, and liquid medium sucking in discharging process being to be in progress alternately, and the piston cant be in field change ceaseless in displacement process middle , whose speed among. In the pump only having a cavity working, not only the pump microtime rate of flow vary with with time, and be discontinuous. With job cavity increasing by, microtime rate of flow pulsation extent is more and more small, and even pragmatic upper not bad regard as to stabilize a stream. Average rate of flow is constant Theoretically, the pump rate of flow depends on main pump structure physics , chemical property independences such as parameter n (every minute intercourse number of times) , S (piston travel) , D (piston diameter) , Z (piston number) , the temperature , viscosity with the independence discharging pressure, and with transporting medium only. Therefore saying a pumps, rate of flow is constant. The pum