Continuous temperature measuring device for molten steel in steel ladle

Abstract

The invention discloses a continuous temperature measuring device for molten steel in a steel ladle. The device comprises an infrared temperature measuring probe, a transmission cable and a signal processing unit, the infrared temperature measuring probe is connected with one end of the transmission cable through a cable interface, the signal processing unit is connected to the other end of the cable, the signal processing unit processes a received infrared temperature measurement signal and sends the processed infrared temperature measurement signal to a display for display, the infrared temperature measuring probe comprises a pipe sleeve, an infrared light detection rod is arranged in the pipe sleeve, a cooling gas channel is arranged between the infrared light detection rod and the pipesleeve, an infrared light detection hole is formed in the infrared light detection rod from front to back, a condensing convex lens, a fixed aperture diaphragm and an infrared detection chip are arranged in the infrared light detection hole successively from front to back, infrared light is condensed by the condensing convex lens and penetrates the fixed aperture diaphragm to reach the infrared detection chip, an adjustable aperture diaphragm is arranged between the infrared detection chip and the fixed aperture diaphragm, and an adjusting knob of the adjustable aperture diaphragm is adjustedand locked through an adjusting and locking mechanism.

Description

technical field [0001] The invention relates to the field of infrared temperature measurement, in particular to a continuous temperature measurement device for molten steel in a ladle, which is suitable for real-time continuous temperature measurement of an intermediate ladle in continuous casting. Background technique [0002] The traditional continuous molten steel thermometer in the tundish is connected with a large display screen, and the large display screen will be placed on the wall for observation. The temperature measuring probe of the thermometer is an infrared temperature measuring probe, and the infrared temperature measuring probe should be close to the ladle to detect the temperature. , in a high-temperature working environment, the infrared temperature measuring probe needs to lead the signal to the thermometer through a signal transmission cable. Although the infrared temperature measuring probe is in a high-temperature working environment, the infrared temper...

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Problems solved by technology

[0002] The traditional continuous molten steel thermometer in the tundish is connected with a large display screen, and the large display screen will be placed on the wall for observation. The temperature measuring probe of the thermometer is an infrared temperature measuring probe, and the infrared temperature measuring probe should be close to the ladle to detect the temperature. , in a high-temperature working environment, the infrared temperature measuring probe needs to lead the signal to the thermometer through a signal transmission cable. Although the infrared temperature measuring probe is in a high-temperature working environment, the infrared temperature measuring probe device needs to be cooled by a cooling structure, but the back of the probe cannot Follow the setting of the signal processing interface circuit. Therefore, the signal processing interface circuit needs to be set as an interface circuit box separately and connected to the signal transmission cable at the other end far away from the temperature measuring probe. Since the traditional infrared temperature measuring probe is a non-standard design, due to Due to processing and assembly errors, the output signal needs to be calibrated by the signal processing circuit. Therefore, every time the infrared temperature measurement probe fails and is repaired and replaced, the infrared temperature measurement probe must be mailed to the manufacturer along with the cable and signal processing interface circuit for repair and replacement. , the transmission cable is thick and long, and it is extremely inconvenient to mail. During the replacement process, the infrared temperature measurement probe needs to be recalibrated. The infrared temperature measurement probe needs to be matched with the signal processing interface circuit. maintenance cost

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