Water circulating system capable of preventing medium-frequency furnace equipment from being dewed

Abstract

The invention discloses a water circulating system capable of preventing medium-frequency furnace equipment from being dewed. The water circulating system comprises a variable-frequency circulating water pump, an electric flow regulating valve, cooling tower equipment, medium-frequency furnace equipment, a bypass pipeline, a temperature sensor, a temperature display screen, a controller and a keyboard digital debugging module, wherein an outlet of the variable-frequency circulating water pump, the electric flow regulating valve, the cooling tower equipment, the medium-frequency furnace equipment and an inlet of the variable-frequency circulating water pump are sequentially connected through pipelines; the temperature sensor is arranged on the pipeline between the cooling tower equipment and the medium-frequency furnace equipment; and the controller is separately in signal communication with the variable-frequency circulating water pump, the temperature sensor, an electric hydraulic actuator and the keyboard digital debugging equipment. The water circulating system capable of preventing the medium-frequency furnace equipment from being dewed achieves the power-saving effect, and enables a water inlet temperature of the medium-frequency furnace equipment to not reach a dewing temperature point all the time.

Description

technical field [0001] The invention relates to a water circulation system for preventing condensation of intermediate frequency furnace equipment, and relates to the water circulation technology of intermediate frequency furnace equipment, the frequency conversion constant pressure water supply technology of water pumps and the temperature control and adjustment technology of three-way valves. Background technique [0002] Intermediate frequency furnace equipment is a high-power power electronic device. The main components such as silicon controlled rectifiers, reactors, capacitors, induction coils, and water-cooled cables all need water cooling. A large number of application practices have proved that 70% of the failures of the intermediate frequency furnace are caused by the failure of the cooling water. [0003] see figure 1 , due to the low winter temperature in northern my country, the temperature of the circulating water passing through the circulating water pump 3'...

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Problems solved by technology

[0005] 1. The influence of condensation on the insulation strength: the water droplets formed by the condensation phenomenon adhere to the surface of the insulating material, which reduces the insulation resistance of the water-cooled cable and the induction coil, and greatly increases the leakage current of the equipment, causing insulation breakdown and electrical failure ;

[0006] 2. The influence of dew condensation on metal corrosion: After the thyristor, induction coil and water-cooled cable in the intermediate frequency furnace equipment are corroded, the performance and service life of the equipment will be seriously reduced; long-term condensation will cause the surface of the conductive metal to rust and grow Mold will form a dull film on the conductive metal and electrical contact materials, resulting in an increase in contact resistance; in such an environment, the circuit will be corroded, reducing the accuracy of the inspection equipment in the intermediate frequency furnace equipment, resulting in equipment failure

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