A flame stability monitoring device and method based on an electrostatic sensor

Abstract

The invention discloses a device and a method for monitoring flame stability based on an electrostatic sensor. The device comprises an electrostatic sensor 1, a pre-amplifying circuit 6, a secondary amplifying and filtering circuit 7, a signal processing and data analysis unit 8 and a display unit 9, wherein the electrostatic sensor 1 is formed by embedding three pairs of staggered strip electrostatic electrodes 3 into one end, near a combustor flame 3, of the electrostatic sensor 1, and is used for sensing the information of combustion property of the combustor flame 2 in the corresponding position; each electrostatic electrode 3 is insulated from other parts by an electrode insulation material 4; a shielding outer casing 5 is arranged, so as to prevent the signal from being interfered; the output end of each electrostatic electrode 3 is directly connected with the pre-amplifying circuit 6, so as to improve the signal to noise ratio; the output end of the pre-amplifying circuit 6 is connected with the secondary amplifying and filtering circuit 7, so as to realize the secondary amplifying and filtering, and the output end of the secondary amplifying and filtering circuit 7 is connected with the signal processing and data analysis unit 8; the output end of the signal processing and data analysis unit 8 is connected with the display unit 9; finally, the flame feature parameters are finally displayed by the display unit 9.

Description

technical field [0001] The invention belongs to the technical field of flame monitoring, in particular to a flame stability monitoring device and method based on an electrostatic sensor. Background technique [0002] Combustion furnaces are widely used in various fields of industrial production process. As a kind of equipment with special properties, its safe operation is not only very important to the safety of industrial production process, but also extremely important to the protection of property safety. In order to prevent accidents in the combustion furnace, a furnace safety monitoring system is usually installed, and the flame detection device is one of the key parts. With the development of science and technology and the further deepening of research, flame detection technology has gone through several different stages. Generally speaking, it can be divided into two methods: direct detection and indirect detection. Direct detection methods include: electrode method,...

AI Technical Summary

Problems solved by technology

Most detection technologies based on radiant light energy use a combination of optical probes in practice to improve the reliability of detection, but the optical probes of this type of sensor are easily contaminated by dust and cannot be widely used

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