Device for starting intermediate-pressure cylinder device by using neighbor turbine steam in unitized unit and starting method thereof
A unit system and unit technology, which is applied in the direction of engine starting, machine/engine, mechanical equipment, etc., can solve the problems that the maintenance period of steam turbine boilers cannot be well coordinated, adjacent units cannot be switched with each other, and the operation flexibility is poor. The method is simple and convenient, economical and reliable, and the effect of reducing labor intensity
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Embodiment 1
[0037] Embodiment 1: A unit system unit uses adjacent steam to start the medium-pressure cylinder device, and the transformation steps are as follows:
[0038](1) Remove the check gate spool from the reheating and cooling section of No. 1 unit to the auxiliary steam header of No. 1 unit;
[0039] (2) Remove the reheating and cooling section of No. 1 unit to the electric adjustment door of the auxiliary steam header of No. 1 unit, and use short pipes to short-circuit;
[0040] (3) Remove the reheating and cooling section of No. 2 unit to the electric adjustment door of the auxiliary steam header of No. 2 unit, and short-circuit it with a short pipe;
[0041] (4) Set the electric door switch of the reheating and cooling section of No. 2 unit to the auxiliary steam header of No. 2 unit as pulse electric for 5 seconds;
[0042] (5) All other original piping systems remain unchanged, the auxiliary steam header of No. 1 unit is connected with the auxiliary steam header of No. 2 uni...
Embodiment 2
[0044] Embodiment 2: A method for starting a medium-pressure cylinder device using adjacent steam for a unit system unit. A unit system unit is used to start the medium-pressure cylinder device with adjacent steam. The steps include the following:
[0045] (1) Inject water into the circulating water system of unit 1, open the connecting door of the circulation pump outlet of units 1 and 2 to 50%, use the circulation pump of unit 2 to supply circulating water to unit 1, and open the bypass door of the open water pump The hydrogen cooler, closed water cooler, and stator cooling water cooler of Unit 1 are filled with water and exhausted, and can be used for the pump interlock test of Unit 1 at the same time to restore standby;
[0046] (2) Inject water into the stator cooling water system of Unit 1, and start a cooling water pump;
[0047] (3) Condenser water replenishment to normal water level 800~1000mm;
[0048] (4) Condensate water system injects water and exhausts air;
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