Cooling system control method and device

A technology of cooling system and control method, applied in pump control, liquid variable capacity machinery, reduction of greenhouse gases, etc. The effect of preventing pump overflow, increasing system resistance, and reducing capacity
CN103104453BActive Publication Date: 2015-08-12MITSUBISHI POWER LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MITSUBISHI POWER LTD
Publication Date
2015-08-12

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Abstract

The invention provides a control method and device for a cooling system, when a pump for the cooling system and with less normal operation is started, starting torque of pump is reduced, and over-current flow of the pump is prevented. The cooling system is provided with: a circulating line for circulation of cooling materials for cooling an auxiliary device in a nuclear power plant, a plurality of pumps in parallel relative to the circulating line; and a flow control valve disposed at an exhaust side downstream of the plurality of pumps and adjusting flow of the cooling materials. The control method comprises: a valve fully-closed control step, wherein the number of pumps in operation is detected, under the condition that stop of a plurality of the pumps is detected, a valve control signal for controlling full-closing of the flow control valve is output; a first pump starting step, wherein in a state that the flow control valve is fully-closed, less operation pumps than normal are started; and a first open valve control step, wherein after the first pump starting step, a valve control signal for controlling the flow control valve below a limiting openness is output, and the limiting opening is set to be smaller than an upper limit of the flow control valve in normal operation.
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Description

technical field

[0001] The invention relates to a control method and a control device of a cooling system for cooling auxiliary equipment of an atomic power plant. Background technique

[0002] Generally, a nuclear power plant is provided with a cooling system for the purpose of cooling auxiliary equipment. Auxiliary equipment mentioned here is equipment other than nuclear reactors, such as turbines or generators. The cooling system directly or indirectly cools auxiliary equipment, and cools lubricating oil supplied to bearings of a turbine, cools coolant supplied to a generator, or cools other auxiliary equipment. For example, in a pressurized water reactor, a high-temperature gas reactor, or a high-speed breeder reactor, a primary cooling system that removes heat generated by the nuclear reactor and a secondary cooling system that generates steam using the heat recovered from the primary cooling system are independently installed. secondary cooling system.

[0003] like...

Claims

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