Rolling mill high-response broken belt detection and protection method and system

Abstract

The invention discloses a rolling mill high-response belt breakage detection and protection method. The rolling mill high-response belt breakage detection and protection method comprises the followingsteps: (1) the change rate of the moment of a rolling mill is obtained on the basis of monitoring the moment value of the rolling mill; (2) the change rate of the moment of the rolling mill is compared with a belt breaking threshold value, and when the change rate of the moment of the rolling mill is larger than the belt breaking threshold value, belt breaking is judged to happen; and (3) executing broken belt protection based on the broken belt protection strategy. In addition, the invention further discloses a rolling mill high-response belt breakage detection and protection system. The rolling mill high-response belt breakage detection and protection system is in data connection with rolling mill equipment, the high-response belt breakage detection and protection system for the rollingmill comprises a control PLC, the control PLC collects data from the rolling mill equipment, and the rolling mill high-response belt breakage detection and protection method is implemented based on the collected data. According to the rolling mill high-response belt breakage detection and protection method, the problems that in the prior art, response has hysteresis quality, the protection strategy is unreasonable, and machine losses are caused by belt twisting, steel stacking and coil loosening frequently can be solved.

Description

technical field [0001] The invention relates to a detection and protection method and system, in particular to a detection and protection method and system suitable for rolling in a rolling mill. Background technique [0002] The secondary cold rolling mill is a cold rolling process unit that rolls the strip steel after continuous cold rolling. Due to the high rolling speed, the rolling thickness is as thin as paper, and the thinnest is 0.10mm. Therefore, when rolling the strip steel, It is common to encounter broken belts, which will cause different degrees of losses to the unit according to the degree of broken belts. If it is light, it will cause the unit to stop for short-term belt breakage processing, and if it is serious, it will cause such as "twisted belt" inside the rolling mill, "stacking steel" between racks and "loose coiling" of steel coils on the coiler. [0003] Specifically, when the strip steel is twisted into the rolling mill, under the thermal effect, the...

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Problems solved by technology

[0009] One of the objectives of the present invention is to provide a high-response broken strip detection and protection method for rolling mills, which can solve the problems of hysteresis in response and unreasonable protection strategies in the prior art, often Problems such as stranding, stacking of steel, and unwinding, resulting in machine loss

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