An automatic early warning and judgment method for oil leakage in the hydraulic system of continuous casting machine

Abstract

The invention discloses an automatic early warning and judging method for oil leakage in the hydraulic system of a continuous casting machine. According to the application of large data of the continuous casting machine, the time at the same moment is mutually checked, and an alarm is raised and according to the system position, equipment principle and on-site production operation Experience prompts relevant treatment opinions. The invention can quickly analyze and locate the oil leakage at the user point of the hydraulic system of the main engine of the continuous casting machine, and provide an alarm and corresponding emergency plan operation prompt system, so that the field equipment and production operators can quickly determine and deal with the oil leakage according to the prompt of the system points to prevent accidents from expanding.

Description

technical field [0001] The invention relates to the field of continuous casting machine process control, and more specifically relates to an automatic early warning and judging method for oil leakage in a hydraulic system of a continuous casting machine. Background technique [0002] The hydraulic system of the casting machine is a power supply unit that provides the precision control of the continuous casting machine equipment, the control of the driving compaction force of the slab and the power of position adjustment control. With the continuous popularization and application of technologies such as light reduction, large reduction, and spray frame moving width cutting in slab continuous casting, hydraulic segment has gradually become the standard configuration of continuous casting machines. The important driving source of these devices is hydraulic pressure. The pressure output value generally reaches 20-25MPa. The host hydraulic system of the continuous casting machin...

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Problems solved by technology

[0004] The current inspection of the oil leakage of the hydraulic system of the continuous casting machine is generally based on the inspection of the oil level of the fuel tank. After the oil level is found to have dropped, relevant inspection personnel or operators search for a needle in a haystack among the many hydraulic user points of the continuous casting machine. The working conditions and environment are complex, the search is very dangerous, and the efficiency is also very low. Often the oil leakage point cannot be found for several hours in a row. It must be determined according to the leaked oil and the action test of related equipment after the machine is shut down.

[0005] In the actual production and operation process, due to the slow decline of the oil level caused by the oil leakage of a single user point, the hydraulic control equipment is not in place and other phenomena lead to the lack of control accuracy of the continuous casting machine, the risk of casting slab quality control, and a large amount of hydraulic oil flowing into the secondary cooling water circulation system , and even lead to local equipment fires caused by hydraulic oil touching high-temperature slabs, etc., it is still hard to prevent, especially when a large number of hydraulic users are in extremely complex and harsh working conditions, it is difficult to check the oil leakage of equipment during the production process It was found that the oil leakage of some equipment was small oil leakage and oil leakage at the beginning. During the continuous production process, the oil leakage situation will gradually accelerate. If the oil leakage point is not found in time in the case of small oil leakage, and local emergency response Treatment, after the oil leakage point gradually expands under high pressure, the oil level of the fuel tank will quickly reach the LL alarm value, and once the continuous casting machine hydraulic pump stops the alarm during the pouring process, the continuous casting machine hydraulic pump automatically jumps and stops the pump, Then the roll gap of the continuous casting machine is out of control, the pressing force of the driving roll drops sharply, and vicious accidents such as billet stagnation will inevitably occur.

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