Method for controlling temperature of crude oil for emulsion of rolling mill and control device

Abstract

The invention relates to a method for controlling temperature of crude oil for emulsion of a rolling mill and a control device. The method comprises the steps of: arranging a heating device on the outer part of a crude oil tank; adopting a circulation heating pump arranged at the tail of the crude oil tank to transfer crude oil to a heat exchanger for heat exchange; simultaneously adopting a temperature controller on the crude oil tank to control the on and off of the heating device; and transferring crude oil to the top of the crude oil tank for outer circulation heating so as to keep the temperature of crude oil inside the crude oil tank at a preset value. A control device comprises the heating device consisting of the circulation heating pump and the heat exchanger, the temperature controller, a steam control valve, a steam trap and pipelines connecting the components, wherein the circulation heating pump is arranged at the tail of the crude oil tank, the heat exchanger is arranged on the side of the crude oil tank and the temperature controller is arranged on the crude oil tank. The invention has the advantages of good heating effect, equal crude oil temperature, high temperature-control property and precision, simple and convenient operation process, non-steam entering the crude oil and non-impact on crude oil quality.

Description

technical field [0001] The invention relates to the field of cooling and lubricating systems for metallurgical equipment, in particular to a method and a control device for controlling the temperature of crude oil required for mixing emulsions in rolling mills. Background technique [0002] At present, the emulsion is generally used as the cooling and lubricant of the continuous rolling mill. The emulsion is made of crude oil and desalted water. The crude oil is specially prepared by emulsifying and adding trace components provided by professional oil suppliers. Crude oil has strict requirements on temperature. If the temperature is too low, it will solidify and be difficult to transport. If the temperature in crude oil is too high, bacteria will multiply and the crude oil will deteriorate. [0003] The previous temperature control method is to install steam coils in the crude oil tank, so there are the following problems: [0004] 1. Uneven heating; [0005] 2. It is easy...

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Problems solved by technology

[0007] The task of the present invention is to provide a method and control device for controlling the temperature of the emulsion crude oil in a rolling mill, which solves the above problems in the prior art, especially solves the uneven heating in the crude oil tank, and the easy leakage of water, especially the influence of steam condensate on the crude oil Quality, and inconvenient maintenance and repair of equipment

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