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

A technology of electrostatic sensor and monitoring device, which is applied in the direction of safety device, combustion method, lighting and heating equipment of the combustion chamber, etc., and can solve the problems that cannot be widely used, and the optical probe is easy to be polluted by dust, etc.

Active Publication Date: 2016-05-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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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

Method used

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

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Embodiment Construction

[0039] The present invention provides a flame stability monitoring device based on an electrostatic sensor, which is characterized in that the device includes an electrostatic sensor 1, a pre-amplification circuit 6, a secondary amplification and filtering circuit 7, a signal processing and data analysis unit 8, and a display unit 9. The electrostatic sensor 1 is three pairs of staggered strip electrostatic electrodes 3 (A1, A2, B1, B2, C1, C2) embedded in the end of the electrostatic sensor 1 close to the burner flame 2, sensing the position of the burner flame 2 Combustion characteristics information; each electrostatic electrode 3 is insulated from other parts by insulating material 4; in order to prevent signal interference, a shielding shell 5 is installed; in order to improve the signal-to-noise ratio, the output of each electrostatic electrode 3 is directly connected to the pre-amplification circuit 6; the output end of the pre-amplification circuit is connected with the...

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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,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23M11/04
Inventor 闫勇张保亮卢钢钱相臣胡永辉黄孝彬
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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