WORMING-UP SYSTEM AND CONTROL METHOD FOR SHIP PROPULSION MAIN TURBINE

摘要

PURPOSE: A warming-up system of a main turbine for a ship and a control method thereof are provided to reduce malfunction risks by quickly and stably warming up the main turbine when the initial steam operation of the main turbine is operated by an integrated automatic controller. CONSTITUTION: A warming-up system of a main turbine (20) for a ship comprises a preheating valve (16), a main turbine operator (30), and an integrated automatic controller (40). The preheating valve is installed in a passage through which steam for preheating a main boiler (11) is transferred to the main turbine. The main turbine operator generates signals when the speed of the main turbine and the pressure of the preheating steam are reached to a set value. The integrated automatic controller opens the preheating valve while the main turbine is operated in a set condition. The main turbine operator generates the signals to stop warming up if satisfying one of the excessive pressures of the preheating steam, the normal operation of the main turbine, and the stopping of the main turbine. The normal operation of the main turbine is determined by a T/G-engagement switch (23) for detecting the engagement of a turning gear (15) and a speed switch (35) for detecting whether or not the main turbine is reached at the set speed. [Reference numerals] (21) Temperature sensing unit; (31) Pressure switch; (35) Speed switch; (41) First determining unit; (42) Second sensing unit; (43) Third determining unit; (45) Blackout detecting unit; (47) Manual operation unit