Automatic acquisition system and method for weight of molten iron added into converter

Abstract

The invention relates to an automatic acquisition system and an automatic acquisition method for weight of molten iron added into a converter. The method comprises the steps of: acquiring the corresponding molten iron heavy ladle weight and light ladle weight according to a crane counterpoint limit signal and a crane weighting signal of a converter programmable logic controller (PLC), judging therationality of crane weight, and sending information to a secondary computer at the same time; and matching inputted molten iron ladle number with molten iron light ladle and heavy ladle weight information and calculating the weight of the molten iron added into the converter by using the secondary computer so as to automatically acquire the weight of the molten iron, eliminate the personal errorof the weight of the added molten iron and ensure the reality and reliability of data. The automatic control level of the whole system is improved, the calculation and control accuracy of an automatic steel-making system is ensured, improvement on the accuracy of molten iron data is facilitated, and the quality of the smelted molten iron is ensured.

Description

technical field [0001] The invention belongs to the technical field of steelmaking automatic control, and in particular relates to an automatic acquisition device and acquisition method for the weight of molten iron mixed into a converter based on an oxygen top-blown converter computer programmable controller (hereinafter referred to as converter PLC) and a secondary computer system. Background technique [0002] At present, the weight of molten iron mixed into the converter is generally calculated and recorded manually. First of all, before the iron mixing operation, the iron mixing personnel will write down the weight of the heavy tank installed on the weighing display screen on the crane. The weight of the empty tank on the weighing display is recorded, and then the weight of the molten iron actually mixed into the converter is manually calculated by the iron-changing personnel through the recorded weight of the heavy tank and the empty tank. Then, the iron-changing pers...

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Problems solved by technology

[0003] 1. Under normal circumstances, the distance between the crane weighing display screen and the iron operator is relatively long. When the light is poor or the operator's vision is poor, it is easy to produce reading errors:

[0004] 2. When calculating the difference between the weight of the heavy tank and the empty tank, if the calculation is wrong by the iron-exchanging personnel, it is very easy to generate calculation errors;

[0005] 3. It means that the information transmission between the hanger and the recorder is completed through language or gestures, and there are information transmission errors;

[0006] 4. There are entry errors in the recording personnel entering data into the automated steelmaking system

[0007] Due to the above errors, the reliability of the data provided is not high, and the weight of the molten iron is not very accurate, which will directly affect the calculation and control accuracy of the automatic steelmaking system and the stability of the molten steel composition.

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