A rotary kiln temperature measuring device

Abstract

The invention relates to the technical field of equipment monitoring in the field of metallurgical industry sintering and pelletizing, and provides a temperature detection device for a rotary kiln. An assembly support is fixed on the side wall of the rotary kiln and a temperature detection through hole is formed in the side wall; a sliding post is arranged on the assembly support; a first end, close to the temperature detection through hole, of the sliding post is fixedly provided with a temperature detection shaft, and a second end of the sliding post is provided with a guide rail wheel; and the sliding post can rotate along with the rotary kiln, and the guide rail wheel is enabled to switch between a temperature detection circular arc section and a non-temperature-detection circular arc section through a rail transfer slideway. According to the temperature detection device for the rotary kiln, the sliding post drives the temperature detection shaft for rail transfer; the temperature detection shaft is inserted into the kiln only at a temperature detection requiring section; and impact, abrasion and corrosion to the temperature detection shaft caused by materials at high temperature are reduced, so that maintenance frequency of the temperature detection device is reduced, and the service life of the temperature detection shaft is obviously prolonged. On the above basis, the temperature detection shaft is inserted into the rotary kiln at the temperature detection section, so that axial temperature field distribution in the kiln can be accurately detected; and real monitoring data is provided for precisely controlling a production process.

Description

technical field [0001] The invention relates to the technical field of equipment monitoring in the field of sintered pellets in the metallurgical industry, in particular to a temperature measuring device for a rotary kiln. Background technique [0002] Rotary kiln is a production kiln widely used in industries such as cement, chemical industry, metallurgy and refractory materials. The axial temperature field distribution in the kiln is the most important reaction parameter, which is closely related to the quality stability of fired products. Monitor the temperature in the kiln. Since the rotary kiln is a rotary calciner, there is no effective direct temperature measurement method. At present, the temperature in the kiln is mainly estimated by the following methods. The first one is that the kiln fire watcher estimates the temperature in the kiln based on experience by observing the color and shape of the flame. The second method is to test the temperature field distributio...

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Problems solved by technology

[0003] Corresponding to the shortcomings of the above-mentioned first technology, it takes a long time for the fire-watching workers to grasp the temperature in the kiln, and the artificial experience judgment is not conducive to the automatic control of industrial kilns and the continuous stability of product quality; the second The shortcoming of the first technology is that the infrared temperature measuring device cannot directly measure the temperature in the kiln, and can only be indirectly estimated by measuring the temperature outside the kiln shell, and the error is relatively large; the shortcoming of the third technology is that the metallurgical pellets in the Take the oxidation roasting process in the rotary kiln as an example. From the kiln head along the axial direction of the kiln, the rotary kiln needs to be kept within a certain temperature range. However, due to the uneven combustion and air flow, the temperature in the rotary kiln is constantly changing and cannot The temperature distribution of the axial temperature field in the kiln can be accurately estimated by the temperature at both ends of the kiln head and the kiln tail; The material is worn and broken, and the protruding temperature measuring shaft in the kiln body is also prone to agglomeration, and finally the temperature measuring shaft is buried, resulting in inaccurate temperature measurement, and the kiln needs to be shut down for replacement, which increases the number of kiln maintenance and production costs

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