The efficiency analysis of steam turbine-driven feed water pump

The text introduces the structure of steam turbine-driven feed water pump briefly, analyzes the difference between steam turbine-driven feed water pump and electrically driven feed pump, and expresses the working principle of centrifugal pump. Besides, it researchs the advantage of raising head of multistage pump by the analysis of a three-level feed pump, states that pump power loss can be divided into mechanical loss, flow loss and volumetric loss respectively and sets up the mathematic model with the power and efficiency and concludes the calculation method of the overall efficiency of multistage pump and analyzes the relationship between the various power. losses and rotational speed and presents specific measures to improve the efficiency.