A method and system for adjusting the temperature of cooling water in a water-cooling system for a diverter valve

Abstract

An adjusting method of a converter valve water cooling system cooling water temperature and a system thereof are disclosed. The system comprises a real-time regulator, a PID regulator and an adder. Real-time adjusting and PID closed loop control are combined so as to adjust a cooling water temperature. A real-time adjusting mode is used to output an adjusting value in real time through the real-time regulator according to an inlet valve temperature. A PID closed loop control mode is used. Firstly, the PID regulator is used to set an expected inlet valve temperature; then a comparator is used to compare an actual inlet valve temperature with the set temperature and a comparison result is input to a PID controller so as to carry out calculation; finally, a sum of a calculation result an adjusting value output by the real-time regulator is acquired through the adder and then a rotation speed of a fan is controlled. In the prior art, open loop adjusting can only be performed during water temperature adjusting and the water temperature can not be stable at a set point, or only the PID closed loop control is performed and the water temperature which is far away from the set point can not be adjusted. By using the method of the system of the invention, the above problems are solved. The method and the system are especially suitable for the water temperature control of the converter valve water cooling system.

Description

technical field [0001] The invention relates to the field of temperature control, in particular to a method for adjusting the temperature of cooling water in a water cooling system of a diverter valve. Background technique [0002] The diverter valve will generate a lot of heat during operation, and a cooling system needs to be configured to cool it down to prevent the aging of components and ensure the normal operation of the diverter valve. The water cooling system is one of the effective cooling methods. By adjusting the temperature of the cooling water in the water cooling system, the heat dissipation of the converter valve is controlled. The existing cooling water temperature adjustment method mainly adopts the adjustment method in which the cooling water temperature is directly related to the cooling effect, that is, the cooling effect is enhanced when the cooling water temperature is high, and the cooling effect is weakened when the temperature is low. Since the cool...

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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that the water temperature adjustment in the prior art only performs open-loop adjustment and cannot stabilize the water temperature at the set point, or only performs PID closed-loop control but cannot adjust the water temperature farther from the set temperature point. To solve the problem of water temperature, a method for adjusting the cooling water temperature of the water cooling system of the diverter valve can be slowed down and the water temperature can be stabilized at the set point.

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