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Method and apparatus for online monitoring tube wall temperature in boiler overheater and reheater

A superheater and reheater technology, which is applied in the field of networked online monitoring and diagnosis devices, can solve the problems of many over-temperature tube explosion accidents and low accuracy of thermal deviation calculation.

Inactive Publication Date: 2006-12-13
王孟浩
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Due to the low calculation accuracy of thermal deviation in boiler design, there are many accidents of superheater and reheater tube explosion in power plants and boilers for other purposes.

Method used

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  • Method and apparatus for online monitoring tube wall temperature in boiler overheater and reheater
  • Method and apparatus for online monitoring tube wall temperature in boiler overheater and reheater
  • Method and apparatus for online monitoring tube wall temperature in boiler overheater and reheater

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Embodiment Construction

[0015] This is also the reason for the design of some imported and imported large-capacity boilers where overtemperature burst tubes occur.

[0016] The present invention is implemented through the following technical measures.

[0017] 1. Input the various structural data of the monitoring tube group into the calculation software, such as the number of tube panels in a tube group, the number of tubes in a panel, the segmental length of each tube, pipe diameter, material, and the size of the inlet and outlet headers. Inner diameter and structure, etc.;

[0018] 2. Use the original temperature measuring points outside the furnace on the boiler or install a small number of temperature measuring points outside the furnace, and collect these data and necessary boiler operating parameters (such as the steam flow rate of the boiler) by the calculation software at regular intervals (for example, once a minute). , pressure, etc.);

[0019] 3. Based on these measured data combined wi...

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Abstract

The invention relates to a detecting method used to on-line detect the wall temperature and life consumption of the tubes of boiler over-heater and regenerator. Wherein, it inputs the temperature detected at the entrance external gas temperature detecting point and other parameters of boiler into the computer, to real-time calculate out the wall temperature of each section of tube, to judge if there is over heated and calculate out the life consumption and the smoke temperature difference, while the result will be displayed on the detector and recorded in the database.

Description

Technical field: [0001] The invention relates to the technical field of power generation boilers and other boilers, and specifically belongs to a networked online monitoring and diagnosis device for preventing tube overheating explosion accidents caused by excessive thermal deviation of superheaters or reheaters during boiler operation. technical background: [0002] In recent years, many boilers in my country, especially large-capacity domestic, imported and imported power generation boilers, have experienced superheater or reheater tube overheating due to excessive heat deviation during operation (the temperature of the tube wall exceeds the temperature of the steel used). allowable temperature) explosion accident. In a power plant, a pipe burst in a boiler can cause economic losses of several million yuan. The so-called thermal deviation is too large, which means that there is a large deviation in the heat absorption or steam flow between the tube panels of a tube group o...

Claims

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Application Information

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IPC IPC(8): F22G5/00G01M19/00G01N35/00G05D23/00G01M99/00
Inventor 王孟浩
Owner 王孟浩
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