A real-time measurement method of boiler outlet flue temperature based on multi-point stereo measurement

A three-dimensional measurement, real-time measurement technology, applied in the direction of measuring heat, measuring devices, thermometers using electrical/magnetic components directly sensitive to heat, etc. Boiler combustion optimization and other issues

CN105371973BInactive Publication Date: 2018-04-24西安西热电站信息技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-04-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a real-time measurement method for flue gas temperature at the outlet of a boiler based on multi-point stereo measurement. By constructing a multi-point stereo measurement system, multiple rows of flue temperature measurement points are set in the horizontal flue of the boiler: at the rear side of the third-stage superheater, at the fourth-stage A row of equidistant smoke temperature measuring points are respectively set on the rear side of the first-stage superheater and the rear side of the second-stage reheater, and each row of smoke temperature measuring points is equidistant from the front and rear heating surfaces; For the flue gas temperature at the outlet of the boiler furnace, you can see the online real-time measurement value of the flue gas temperature on the DCS screen of the centralized control center. To monitor the boiler operation in real time to ensure safe operation.
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Description

technical field

[0001] The invention belongs to the technical field of power plant boiler monitoring, and relates to a real-time measurement method for boiler outlet smoke temperature based on multi-point stereo measurement. Background technique

[0002] Furnace flue gas temperature, especially the flue gas temperature in the furnace outlet area, is a very critical parameter that needs to be monitored during the operation of power plant boilers. Realizing real-time and accurate temperature measurement of furnace flue gas is crucial to ensuring the safe operation of thermal power plants, improving unit economy and optimizing boilers. Design matters.

[0003] In the design of traditional thermal power plants, the smoke temperature probes (one set on the left and one on the left) are specified with the boiler as a means of measuring the smoke temperature at the furnace outlet. figure 1 shown. The smoke temperature probe is an electromechanical device that sends a thermocouple...

Examples

Embodiment Construction

[0078] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0079] see figure 2 , a method for real-time measurement of boiler outlet flue gas temperature based on multi-point stereo measurement, including the following operations:

[0080] 1) Build a multi-point stereo measurement system:

[0081] Set up multiple rows of smoke temperature measuring points in the horizontal flue of the boiler: set up a row of equidistantly distributed smoke temperature measuring points at the rear of the third-stage superheater, the fourth-stage superheater, and the second-stage reheater respectively. The temperature measuring point is equidistant from the front and rear heating surfaces; the smoke temperature measuring point adopts armored thermocouples for temperature collection;

[0082] Further, see figure 2 , install 18 smoke temperature measuring points in ...