Study on IP control valve of largescale steam turbine engaged in heat supply regulation

Abstract

Abstract:

As to reheating turbine, high temperature reheat steam flow reheated in boiler goes through the IP and controlling valve before entering the IP cylinder, which secures the safety of the unit by controlling the intake. Normally, the IP control valve is not involved in load adjustment. But when there is a requirement for IP valve controlling from a unit, IP control valve should be able to adjust the reheating steam pressure as well as the steam flow for the purpose of engaging in heat supply regulation. According to the application example, the feasibility of IP control valve to regulate the heat supply is studied from the reheat steam parameters, the valve flow characteristics, the valve operation mode and the influence of the flow velocity design on the steam force. The results show that the technique of IP control valve’s engagement in heat supply regulations is feasible and has good effectiveness.

Key words:

">">reheat steam turbine；IP control valve；heat supply regulation

LIU Xiaoyan, WANG Wenzhong, OUYANG Jie, WEI Dongliang, XIE Lingui.

Study on IP control valve of largescale steam turbine engaged in heat supply regulation

[J]. Huadian Technology, 2018, 40(3): 9-12.

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Study on IP control valve of largescale steam turbine engaged in heat supply regulation

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