When is it necessary to activate the turbine bypass system?
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When is it necessary to activate the turbine bypass system?
In the event of an emergency shutdown during normal operation, the bypass valve must be opened immediately to relieve pressure； Additionally, during startup, the main steam system is kept unobstructed through bypassing, as well as components such as the pipe warming system and cooling reheaters. The air intake volume can be adjusted during the turbine startup. Therefore, the bypass can be disconnected once the turbine flow returns to normal. It is used quite frequently during startup. It can be disabled once startup is complete.
It’s when the steam turbine shuts down; the process units require steam, and since it’s not possible to obtain steam from the turbine, a bypass system is used to reduce the temperature and pressure in order to supply steam
During the turbine startup warming-up process； The turbine is overloaded, or it shuts down due to an accident.
Turbine startup process, turbine shutdown, load rejection condition