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A system and method for on-line autonomous measurement of electrolyzer liquid level based on impedance change

A technology of impedance change and measurement method, which is applied in the direction of liquid level indicator for physical variable measurement, and can solve problems such as low efficiency, interference of moving mechanism, and large subjective error

Active Publication Date: 2019-02-15
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some problems in this kind of manual measurement: the boundary line on the surface of the probe is rough, the subjective error of position judgment is large, and the resolution of manual reading is about 1cm; the reading must be fast, and it cannot be distinguished after the brightness fades; Two people work together, which is time-consuming and inefficient; data is recorded with pen and paper, which is incompatible with the enterprise information network; after a measurement is completed, the probe needs to be beaten and cleaned for reuse
At the same time, the strong magnetic field of hundreds of gauss will have a strong attraction to the steel parts in the system, which often causes interference to the moving mechanism

Method used

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  • A system and method for on-line autonomous measurement of electrolyzer liquid level based on impedance change
  • A system and method for on-line autonomous measurement of electrolyzer liquid level based on impedance change
  • A system and method for on-line autonomous measurement of electrolyzer liquid level based on impedance change

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Embodiment Construction

[0047] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0048] see figure 1 As shown, an on-line autonomous measurement system for electrolyzer liquid level based on impedance changes, including an angled test frame composed of a base plate 4 and a back plate 5, a push rod 2 and an electronic component 1; rollers 6 and U Type reference frame 8, the top of the base plate 4 is provided with an inclination sensor 9, and the right side of the base plate 4 is provided with a chute 3 that cooperates with the push rod 2; it also includes a motor 10 and an impedance probe rod 14, and the impedance probe rod 14 It is arranged in front of the backboard 5, and the motor 10 is arranged behind it, and the motor 10 drives the movement of the impedance probe rod 14; , motor 10, impedance probe rod 14 and push rod 2 are ele...

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Abstract

The invention relates to an online and automatic electrolytic bath liquid level measuring system and method based on impedance change. The measuring system mainly comprises an angular testing jig, a motor, an impedance probe, an electronic unit and the like, wherein the angular testing jig consists of a bottom plate, a back plate and multiple accessories, can extend into a narrow space above an electrolytic bath fire hole, can be conveniently adjusted to a horizontal reference position and can isolate electronic and electric components from thermal radiation of the fire hole, forward and backward rotation of the motor is converted into vertical sliding of the impedance probe by the aid of a worm gear, a worm mechanism and a connector, and the impedance probe measures impedance continuously. The actual problems such as high temperature, strong magnetism, slag scraping, datum level and the like are fully considered, the liquid level and the interface level of an electrolytic bath can be measured reliably, rapidly, automatically and accurately, real-time data are provided for the aluminum electrolysis production process, and the measuring system and method have great significance in energy conservation, optimization and safe operation.

Description

technical field [0001] The invention relates to the technical field of electrolyte impedance measurement, in particular to an automatic measurement method and measurement system for molten electrolyte liquid level and molten electrolytic aluminum interface based on impedance changes in high temperature and strong magnetic field environments. Background technique [0002] At present, electrolytic aluminum mainly adopts molten salt electrolysis process. Among them, the raw materials are alumina and fluoride salt, and the direct current used in the electrolytic reaction is supplied by a rectifier. Add the raw materials into the prebaked anode electrolytic cell, and introduce a strong direct current through the prebaked anode in the electrolytic cell. Liquid metal aluminum is precipitated. [0003] The liquid level of the molten electrolyte in the electrolytic cell and the interface with the bottom aluminum liquid are two important process parameters. The liquid level and int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/24C25C3/20
CPCC25C3/20G01F23/24
Inventor 张朝晖赵小燕边新孝王立辉谢乾阳张璐曹斌杨朝红刘明路辉王紫千
Owner UNIV OF SCI & TECH BEIJING
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