Crystallizer cooling water control system and method

Abstract

The invention discloses a crystallizer cooling water control system and method. The system comprises a closed-loop circulating pipeline, a heat exchange cooling pipeline and a controller, wherein theclosed-loop circulating pipeline is formed by sequentially communicating a crystallizer, a water return pipeline and a water inlet pipeline; a temperature detecting device is arranged on the water inlet pipeline; the heat exchange cooling pipeline is used for performing heat exchange with cooling water in the closed-loop circulating pipeline, and comprises a water inlet main tube, a heat exchangerand a water return main tube; a heating medium inlet and outlet of the heat exchanger is connected onto the water return pipeline; a refrigerant inlet and outlet is connected to the water inlet maintube and the water return main tube through pipelines separately; a water amount regulating valve is arranged on the water return main tube; the controller is connected to the temperature detecting device on the water inlet pipeline; and opening degree of the water amount regulating valve is automatically regulated according to the detected water temperature data. The crystallizer cooling water control system can precisely control a cooling water temperature in the closed-loop circulating pipeline to be within a range of 30-35 DEG C, guarantees hot-flow stability of the crystallizer, and guarantees surface quality of casting blank.

Description

technical field [0001] The invention relates to the technical field of metallurgical continuous casting crystallizers, in particular to a crystallizer cooling water control system and method. Background technique [0002] The mold is the heart of the continuous casting machine. The solidification and heat transfer of molten steel in the mold is the key to continuous casting, which has a great impact on the output and quality of continuous casting. In fact, almost all the defects of casting slabs are crystallized The formation in the mold, especially the surface defects of the slab is more directly related to the heat transfer of the mold. The casting slab forms a stable and uniform slab shell in the crystallizer is the link of continuous casting surface quality control. The heat in the molten steel is taken away by the cooling water and the crystallization process is essentially the process of the molten steel forming a billet shell in the crystallizer. The stable control o...

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Problems solved by technology

[0004] At present, devices to ensure the stability of the crystallizer cooling water temperature have also been developed, including steam heating devices, air-cooled cooling devices, etc., which have played a certain role, but there is no way to accurately control the crystallizer cooling water, and the temperature stabilization effect is not ideal. At the same time Various devices occupy a large area and have high operating costs

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