| 摘要 |
PURPOSE:To reduce the pressure fluctuation of cooling water, and to enhance reliability by the simplification of control devices, by providing a bypass pipe by which the cooling water for respective apparatus coolers is bypassed from the upstream side to the downstream side, and providing this bypass pipe with a cooling water pressure regulating valve. CONSTITUTION:The apparatus cooling water for a power plant is sent to a cooling water cooler 3 by a cooling water pump 1 to lower the water temperature. The cooling water is sent to respective apparatus coolers 9 through a main cooling water pipe 2. The cooling water pressure regulating valve 7 which is arranged in the bypass pipe 6 for respective apparatus coolers keeps the cooling water pressure constant via the signal of an inlet/outlet differential pressure detector 8 of the cooling water pump 1. Thus, the pressure fluctuation of cooling water can be reduced, and the simplification of control devices can be achieved.
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