Method and device for measuring temperature in boiler furnace

Abstract

The invention discloses a boiler hearth temperature measuring method and a boiler hearth temperature measuring device, which relate to the temperature measuring technologies. The boiler hearth temperature measuring method adopts a method of coupling infrared temperature measurement with acoustic temperature measurement, and reconstructs a hearth internal three-dimensional temperature field formed by coupling acoustic and infrared temperature measurement results. The boiler hearth temperature measuring device comprises infrared temperature measuring devices which are fixed at four boiler corners on the same horizontal plane of a boiler hearth, an acoustic temperature measuring device is fixed at a central position between every two adjacent infrared temperature measuring devices, the infrared temperature measuring devices are connected with a photoelectric conversion device, the acoustic temperature measuring devices are connected with an acoustoelectric conversion device, the photoelectric conversion device and the acoustoelectric conversion device are connected with a signal coupling device, and the signal coupling device is connected with a display output device. The boiler hearth temperature measuring method and the boiler hearth temperature measuring device can achieve real-time monitoring of the temperature field, save expenditure required for installation and subsequent maintenance of part of equipment, and are low in cost.

Description

technical field [0001] The invention relates to temperature measurement technology, in particular to a temperature measurement method and a temperature measurement device for a boiler furnace. Background technique [0002] As the demand for boiler furnace temperature measurement technology continues to increase, temperature measurement technology has also undergone improvements. With the development of temperature measurement technology, there are not only mature direct contact temperature measurement methods, such as infrared CT temperature measurement, but also non-contact temperature measurement methods represented by acoustic temperature measurement. [0003] The direct contact temperature measurement method is to arrange the temperature measurement equipment in the temperature field for measurement, but the temperature measurement cycle of this method should not be too long, so it is difficult to realize online monitoring and temperature measurement of the entire furnac...

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Problems solved by technology

However, this method is cost-effective for installation, and it is difficult to measure the temperature of the furnace center, and it is very difficult to realize the reconstruction of the three-dimensional temperature field.

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