Particle removing device

Abstract

A particle removing device comprises a separator and a collecting device which are arranged in a steam pipeline, and the separator is connected with the collecting device. A discharging pipe is arranged on the collecting device, a valve is arranged on the discharging pipe, and the discharging pipe is located outside the steam pipeline. According to the particle removing device, solid particles in steam can be prevented from scouring a valve pipeline and turbine blades and causing abrasion, the solid particles in the steam can be prevented from causing jamming of a turbine adjusting valve and the like, and it is guaranteed that the turbine adjusting valve and the like can be normally closed when needed so as to effectively cut off steam entering a turbine, prevent the overspeed of a unit and ensure the safety of the unit.

Description

technical field [0001] The invention belongs to the field of thermal power generation, and in particular relates to a particle removal device. Background technique [0002] In order to improve the cycle efficiency of thermal power units, the steam parameters of power plant boilers have been continuously improved. At present, they have reached ultra-supercritical parameters, and the steam temperature has reached 600°C-620°C, which is close to the limit of the metal service temperature. Due to the increase of steam parameters, the problem of steam oxidation of metal pipes is becoming more and more prominent. The metal is oxidized by steam to form an oxide scale. With the increase of use time, the oxide scale thickens and falls off, and solid particles enter the steam. The solid particles in the steam will not only wash away the valve pipes and steam turbine blades to cause wear, but also often cause jamming of steam turbine regulating valves, etc. The jamming of the regulati...

AI Technical Summary

Problems solved by technology

The solid particles in the steam will not only wash away the valve pipes and steam turbine blades to cause wear, but also often cause jamming of steam turbine regulating valves, etc.

The jamming of the regulating valve of the steam turbine will affect the normal closing of the steam valve of the unit. When necessary, the steam entering the steam turbine cannot be effectively cut off, and there is a safety hazard causing the unit to overspeed, threatening the safety of the unit.

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