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Front box liquid level control system and using method thereof

A technology of liquid level control and front box, applied in liquid level control, control/regulation system, non-electric variable control, etc., can solve problems such as misjudgment, inconvenient liquid level measurement, inaccurate measurement value, etc.

Inactive Publication Date: 2020-02-14
HENGYANG RAMON SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a front tank liquid level control system and its use method, which solves the problem that the existing aluminum liquid is a high-temperature liquid, the liquid level is inconvenient to measure, and the measured value of the existing measurement technology is not accurate , prone to misjudgment

Method used

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  • Front box liquid level control system and using method thereof

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Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the present invention provides a technical solution: a front box liquid level control system includes a manual box, a field operation box, an industrial computer, a PLC controller, a secondary instrument, an eddy current sensor at the front box, a driver, a servo motor and stopper rod actuator; the hand-operated box is connected with the field operation box through wires; the field operation box and industrial computer are connected with the PLC controller through wires; the secondary instrument is respectively connected with the PLC controller through wires It is connected with the eddy current sensor at the front box; the driver is connected with the PLC controller through wires; the servo motor is connected with the driver through wires; the stopper rod actuator is connected with the servo motor.

Embodiment 2

[0027] The method for using the front tank liquid level control system includes the following steps:

[0028] Step 1: liquid level detection;

[0029] Step 2: Signal feedback;

[0030] Step 3: Logic operation;

[0031] Step 4: Opening control.

[0032] Said step 1: liquid level detection, the eddy current sensor at the front box detects the liquid level of the aluminum water in the front box, and the eddy current sensor generates an electromagnetic signal to generate an eddy current on the surface of the aluminum water, and this eddy current is generated on the coil of the eddy current sensor at the front box Induction signal, the strength of the signal varies with the distance from the surface of the aluminum water to the bottom of the eddy current sensor at the front box.

[0033] Said step 2: signal feedback, the induction signal of the eddy current sensor at the front box is transmitted to the secondary instrument through the cable, and the liquid level height and vario...

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Abstract

The invention discloses a front box liquid level control system and a using method thereof. The control system comprises a manual operation box, an on-site operation box, an industrial personal computer, a PLC (programmable logic controller), a secondary instrument, an eddy current sensor at a front box, a driver, a servo motor and a stopper actuator. According to the invention, the eddy current sensor at a front box is arranged and is used for detecting a liquid level height of molten aluminum in the front box; the eddy current sensor generates an electromagnetic signal to generate eddy currents on the surface of molten aluminum; an induction signal is generated at an eddy current sensor coil at the front box by the eddy current and the signal intensity changes with a distance between thesurface of the molten aluminum to the bottom of the eddy current sensor at the front box, so that the liquid level of the molten aluminum can be accurately measured and the test precision can reach + / -0.3 mm.

Description

technical field [0001] The invention relates to the technical field of front tank liquid level control, in particular to a front tank liquid level control system and an application method thereof. Background technique [0002] Casting and rolling refers to the process of rolling deformation of molten metal while continuous casting and solidification. The liquid metal is directly poured into the roll gap, and the roll not only acts as a crystallizer but also rolls and deforms the metal at the same time. This process is also called liquid rolling or ingotless rolling. [0003] During casting and rolling, it is necessary to use the front liquid tank to add aluminum liquid to the casting and rolling machine, but the aluminum liquid is a high-temperature liquid, and the liquid level is inconvenient to measure, and the measured value of the existing measurement technology is not accurate, which is prone to misjudgment. Contents of the invention [0004] (1) Solved technical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D9/12
CPCG05D9/12
Inventor 田立肖小文许常龙
Owner HENGYANG RAMON SCI & TECH CO LTD
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