A Coal-fired Boiler Flame Detector Based on Heat Conduction Induction

Abstract

The invention discloses a coal-fired boiler flame detector with heat conduction induction, which comprises a casing and an induction probe. A groove is opened at one end of the casing, and the induction probe is fixedly connected with the bottom surface wall inside the groove. The bottom surface wall is spirally connected with a threaded driving rod, and the inside of the threaded driving rod is rotatably connected with a support rod, and one end of the support rod extends to the outside of the casing and is fixedly connected with a protective cover. In the present invention, the induction probe is arranged inside the groove, so that the induction probe is not easy to be damaged by impact. During the use of the induction probe, the threaded driving rod is rotated to drive the sliding column to slide into the bar-shaped chute, so that the protective cover and the induction The probes are kept at a certain distance, which has good protection performance and has no barriers to the detection of the probes, which does not affect the detection effect. At the same time, the protective cover can be stored in the groove to prevent the cooling water from entering the sensing probe during maintenance and damaging the sensing probe.

Description

technical field [0001] The invention relates to the technical field of flame detectors, in particular to a heat conduction induction flame detector for a coal-fired boiler. Background technique [0002] The flame detector is an important equipment in the safety monitoring system of the boiler furnace. Its function is to detect the combustion conditions in real time according to the combustion characteristics of the flame. When the fuel supply is stopped when the boiler is extinguished, an alarm can be issued through the alarm system to remind the staff to deal with it in time to ensure the safe operation of the boiler. [0003] During the use of existing flame detectors, the detection probe is a component with high sensitivity, and the lack of corresponding protection mechanism causes the detection probe to be easily damaged. If a protection mechanism is provided, it will protect the probe and make the detection probe not easy It is damaged when it is hit, but there is a la...

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Problems solved by technology

[0003] During the use of existing flame detectors, the detection probe is a component with high sensitivity, and the lack of corresponding protection mechanism causes the detection probe to be easily damaged. If a protection mechanism is provided, it will protect the probe and make the detection probe not easy It is damaged when it is hit, but there is a large barrier to the detection of the probe, which affects the detection effect. At the same time, in the process of use, the coal powder that is not fully burned in the boiler is easy to accumulate on the outer wall of the detection probe, resulting in the sensitivity of the detection probe. Influence, when the signal is transmitted through the signal transmission optical fiber, the signal strength is easy to jump, which is not conducive to the operator to monitor the combustion situation in the furnace

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