Date:

2025-04-30

Title of Paper:

Optimization design of separators for removing solid particles from main steam pipeline of high-parameter steam turbine

Journal:

Applied Thermal Engineering

Summary:

In this paper, particle separators with different structures are designed based on main steam pipe of an
ultra supercritical steam turbine. With the employment of particle rebound model established through
high temperature particle rebound experiment, systematic numerical simulations on the influence of particle
trap structure, steam mass flow for transporting particles on separation performance and pressure
loss characteristic of separation system are carefully conducted. Besides, the effect of particle separation
system on the working performance of thermal system is also analyzed. Results show that particle separation
efficiency of three traps increases with the increase of amount of steam for transferring particles
first, which then stabilize after a certain value is reached, while pressure loss of particle separation system
is basically constant. With a small amount of transporting steam, separation efficiency of 100 lm
particle in trap B can reach up to 78%, and pressure loss of the system is below 13 kPa. Effect of particle
separation system on the heat rate of 1000 MW thermal system is less than 0.15%, which is well below
the profits earned through the reduction of solid particle erosion to turbine blades. The result of this
paper will provide new ideas for thoroughly solving erosion problem of high parameter steam turbine.

Co-author:

蔡柳溪，王顺森，程上方

Volume:

111

Page Number:

516-525

Translation or Not:

No

Date of Publication:

2017-01-25