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Infrared temperature measuring device of coal-fired boiler

A technology for infrared temperature measurement and coal-fired boilers, which is used in measurement devices, optical radiation measurement, electrical radiation detectors, etc. The effect of ash carbon content

Active Publication Date: 2013-07-31
刘建松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention proposes an infrared temperature measuring device, which solves the problem of dust collection and coking in the optical path when the traditional method uses infrared to measure the internal temperature of a coal-fired boiler;

Method used

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  • Infrared temperature measuring device of coal-fired boiler
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  • Infrared temperature measuring device of coal-fired boiler

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] Embodiment one: see figure 2 . The coal-fired boiler infrared temperature measuring device of the present invention includes an optical system 6 and a photoelectric detection and signal processing unit 7 arranged inside the device casing 9. The front end of the optical system 6 is connected to the device casing 9 and communicated with its internal optical path. The light guide tube 5 inside the boiler, the front end of the light guide tube 5 is open, and the light guide tube passes through the openings on the furnace wall and the water-cooled wall and extends into the boiler; the light guide tube 5 guides the radiant light in the furnace to the optical system on the lens; the outer end of the device housing 9 is provided with a cooling medium interface 8, and the cooling medium interface 8 communicates with the inner cavity of the device housing and the light guide pipe 5.

[0025] When the temperature measuring device works normally and measures the temperature of th...

Embodiment 2

[0026] Embodiment two: see figure 2 The coal-fired boiler infrared temperature measuring device of this embodiment is different from Embodiment 1 in that a light-shielding blade 11 is provided at the connection between the optical system and the light pipe 5 and the device housing 9, and the The light-shielding blade is one piece, whose shape corresponds to the communication port between the light guide tube and the device housing 9, and its upper end is hingedly mounted on the outer wall of the device housing 9 in the light guide tube. The member automatically closes the communication port between the light guide tube and the device housing 9.

Embodiment 3

[0027] Embodiment three: see figure 2 , the coal-fired boiler infrared temperature measuring device of this embodiment is different from Embodiment 1 in that the light-shielding blades are two opposite pieces, which are respectively hinged and installed on the outer wall of the device shell 9 in the light guide tube, and on the outer wall of the device shell 9 Or the inner wall and the light-shielding vanes are equipped with elastic members, and the light-shielding vanes rely on the elastic members to automatically close the communication port between the light guide tube and the device housing 9 when the blowing cooling medium loses pressure.

[0028]The coal-fired boiler infrared temperature measuring device of the present invention is provided with a fixed frame 10 at the outer front end of the device shell 9, and the temperature measuring device is fixed on the outer wall of the coal-fired boiler furnace through the fixed frame, and the light guide tube 5 passes through th...

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Abstract

The invention relates to a temperature measuring device of a radiant type coal-fired boiler, which comprises an optical system arranged at the inner part of a device shell, and a photoelectric-detecting and signal-processing unit, wherein a light guide tube which is connected with the device shell and is communicated with a light path at the inner part of the optical system is arranged at the front end of the optical system; the light guide tube is long enough to pass through opening holes on a boiler wall and a water cooling wall to extend into the inner part of the boiler; and a cooling medium interface is arranged at the outer side end of the device shell and is communicated with a hollow cavity at the inner part of the device shell and the light guide tube. The inventive infrared temperature measuring device has simple structure, reasonable design, solves dust collection and coking problems in a light path during temperature measuring in the coal-fired boiler by using a traditional infrared mode, as well as long-term washing and attrition problems to the boiler water cooling wall from air current after the traditional temperature measuring device is combined with fly ash. The design of a light-blocking blade effectively solves the problem protection problem of the temperature measuring device after the cooling medium is absent, contributes to prolonging the service life of the device, and reduces the production cost.

Description

technical field [0001] The invention relates to a radiation type coal-fired boiler temperature measuring device and a method for establishing the temperature field of the coal-fired boiler. Background technique [0002] Gas, liquid (including water-coal slurry), solid and other combustibles are burned in the boiler, and the temperature field of the flame directly reflects the combustion status. By detecting the flame temperature of the upper and lower sections inside the boiler, the combustion temperature field in the furnace is established to determine the Whether the combustion deviates from the center and whether the coking temperature in the furnace exceeds the coking temperature of the furnace can judge whether high-temperature corrosion is caused to the water-cooled wall, and provide a basis for optimizing combustion adjustment. To establish a temperature field inside the boiler to provide a direct basis for operation adjustment, it is necessary to determine how to sel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/10G01J5/02
Inventor 刘建松赵庆恩
Owner 刘建松