Real-time monitoring and safety warning device for temperature of furnace tube of tubular industrial furnace

Abstract

The invention discloses a real-time monitoring and safety warning device for the temperature of a furnace tube of a tubular industrial furnace. The real-time monitoring and safety warning device comprises four parts, namely a detecting device, an electrical control device, an air source control cabinet and a computer process and control part. According to the characteristics of infrared radiation of the furnace tube, an infrared radiation image of the furnace tube is obtained by an optical imaging system suitable for colorimetric temperature measurement, the infrared radiation image is analyzed by adopting technologies of digital image processing, pattern recognition, computer vision measurement and the like, the distribution state of the temperature on the surface of the furnace tube is obtained in real time by virtue of the colorimetric temperature measurement technology so as to give an overtemperature alarm, and the change trend of the distribution of a temperature field of the furnace tube is obtained by utilizing a database to analyze history data in the whole operation cycle of the furnace tube so as to provide intuitive and effective basis for the evaluation of the efficiency of a heating furnace and the residual service life of the furnace tube. The real-time monitoring and safety warning device provides key parameters for the optimization of burning of the industrial furnace, and has great significance on ensuring safety production and improving productive efficiency.

Description

technical field [0001] The invention relates to the field of tubular industrial furnaces in the petrochemical industry, in particular to a real-time monitoring and safety warning device for the furnace tube temperature of the tubular industrial furnace. Background technique [0002] Tube industrial furnace is one of the main equipments in petrochemical production and is widely used in petroleum refining and petrochemical production. However, because the materials handled are flammable and explosive, coupled with the open flame operation, the danger is very high, and it has always been the key part of fire prevention and explosion protection in the production process of petrochemical enterprises. The heating furnace often adopts a tubular heating furnace. The low-temperature material passes through the convection chamber furnace tube and the radiation chamber furnace tube, absorbs heat in the furnace, and reaches the required process requirements when it exits the heating fur...

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Problems solved by technology

[0005] At present, the temperature monitoring of the furnace tube of the heating furnace still relies on the staff to regularly measure the furnace tube with a temperature gun through the observation hole, so there are the following problems: (1) The number of measured points (areas) is limited, The actual distribution of the temperature of the furnace tube cannot be fully reflected, making it difficult to control the actual situation of the furnace tube in the entire furnace, and it is also difficult to achieve the best effect in combustion control; The local serious overheating cannot be detected in time, resulting in a great potential safety hazard. In serious cases, the furnace tube may even be burnt through, causing a fire in the furnace and endangering the lives and property safety of the staff; The operating temperature history of the furnace tube is comprehensively and accurately recorded and analyzed, so it is difficult to predict the remaining service life of the furnace tube

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