Accurate and stable high-temperature molten iron liquid level detection device

Abstract

The invention discloses an accurate and stable high-temperature molten iron liquid level detection device, and belongs to the technical field of high-temperature molten iron liquid level detection devices. A first base plate and a second base plate are connected through four connecting rods with the same length, a hoisting connecting piece is installed on the outer side of the first base plate, a high-temperature molten iron liquid level sensor is installed on the inner side of the second base plate, an installation calibration sensor is installed on the outer side of the second base plate, and an air cooling device is arranged on the first base plate; a stainless steel protective shell and a high-temperature heat insulation suit cover the outer parts of the mounting calibration sensor and the high-temperature molten iron liquid level sensor, and are connected with the first base plate and the second base plate through bolt holes reserved in the side edges of the first base plate and the second base plate; and detection holes are formed in the stainless steel protective shell and the high-temperature heat insulation clothes on the outer side of the base plate II, namely the bottom part of the high-temperature molten iron liquid level sensor. The processing speed is high, stable height data are obtained instantly through filtering processing and sent to the robot, and the robot can accurately reach the water taking position.

Description

technical field [0001] The invention relates to an accurate and stable high-temperature molten iron level detection device, belonging to the technical field of high-temperature molten iron level detection devices. Background technique [0002] At present, for the foundry industry, most of the traditional casting methods use manual or manual auxiliary machinery to realize the casting of high-temperature molten iron. The casting efficiency is low and the working environment is harsh. After the automation transformation, the casting action can be replaced by robots. How to accurately and efficiently detect the liquid level of the molten iron in the blast furnace and send the stable height data to the robot is the key to the automation transformation. [0003] The existing testing equipment on the market can be divided into two main categories according to the detection methods, contact type and non-contact type. In contact detection equipment, traditional electronic sensors su...

AI Technical Summary

Problems solved by technology

In contact detection equipment, traditional electronic sensors such as capacitive sensors, photoelectric sensors, etc., cannot directly measure due to high temperature and electromagnetic interference.

Although the existing carbon rod contact detection method can realize contact detection, due to the high temperature, the carbon rod will be worn out and needs to be replaced frequently

In non-contact equipment, the existing laser detection sensor works mainly by calculating the height through the time difference of light reflection, which mainly has the following three disadvantages: 1. It can only be used for liquid detection below 1400 ° C. When the temperature of molten iron exceeds 1400 ° C After ℃, the light intensity on the surface of the molten iron is much greater than that of the laser line, and the sensor cannot receive the reflected light stably, so accurate height data cannot be obtained

2. Because it uses light reflection as the detection principle, for small-sized furnaces, the surface of molten iron fluctuates violently under boiling conditions, and smoke, flames, etc. interfere seriously with light, and the laser line cannot form a good reflection with the liquid surface stably, which will cause lead to the instability of detection data

4. Affected by the three factors, the detection of small-caliber furnaces, the laser installation position is relatively low, and it is greatly affected by the high temperature of the environment, so it is not easy to work directly above the furnace mouth for a long time

[0004] To sum up, there are currently existing high-temperature molten iron depth detection equipment. The contact type has the problem of loss, and the non-contact type has the disadvantages of small application range and unstable data.

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