Safe and precise control of fast cooling and fast heating automatic switching temperature control system

Abstract

The invention discloses a quick-cooling quick-heating automatic switching temperature control system with the characteristic of secure and precise control. The system comprises an oil outlet pipeline, an oil return pipeline, a cooling circulating system, and a heating circulating system, wherein the cooling circulating system and the heating circulating system are communicated with the oil outlet pipeline and the oil return pipeline by pipes. The cooling circulating system includes an oil cooling box and a first pumping unit; and the heating circulating system consists of an oil heating box and a second pumping unit. A first pneumatic valve and a second pneumatic valve are arranged on the communication pipelines between the cooling circulating system, the oil return pipeline and the oil outlet pipeline; a fourth pneumatic valve and a fifth pneumatic valve are arranged on the communication pipelines between the heating circulating system, the oil return pipeline and the oil outlet pipeline; a third pneumatic valve is arranged on the communication pipeline between the oil cooling box and the first pumping unit; a sixth pneumatic valve is arranged on the communication pipeline between the oil heating box and the second pumping unit; and the oil heating box and the oil cooling box are connected by a pipeline and a seventh pneumatic valve is arranged on the pipeline. According to the invention, opening or closing of the pipeline can be controlled precisely, thereby realizing automatic switching between heating and cooling; and the system security is high.

Description

【Technical field】 [0001] The invention belongs to the technical field of temperature control, and in particular relates to a temperature control system for automatic switching between rapid cooling and rapid heating under safe and precise control. 【Background technique】 [0002] Temperature control is widely used in modern manufacturing industries, such as pharmaceuticals, cosmetics reactors, and carbon fiber manufacturing temperature control fields. Among them, the manufacturing process of some products requires rapid switching between high and low temperatures, for example, the temperature needs to be quickly switched between the high temperature of 280°C and the low temperature of 0°C. One is heated from normal temperature to high temperature; the other is to cool the medium from normal temperature to low temperature. However, when switching, it is necessary to manually control the way of manually switching the valve, or to manually control the entire control system to r...

AI Technical Summary

Problems solved by technology

This method requires manual continuous monitoring, which is time-consuming and labor-intensive; and the temperature control accuracy is low, with a general error of 2-4°C, which is difficult to meet customer production needs

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