Method for intelligently managing wall temperature of final superheater and final reheater of boiler of power station

A final stage superheater and final reheater technology, applied in lighting and heating equipment, steam generation, control systems, etc., can solve problems affecting the safe operation of boilers, damaged pipes, etc., and achieve fast online real-time calculation and online Effects of monitoring and control and life extension

Inactive Publication Date: 2010-09-15
SHANGHAI POWER EQUIP RES INST +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

A tube burst in a large-capacity supercritical boiler during operation will not only cause huge direct economic losses, but also cause the hidden danger of continuous tube burst due to the damage of a large area of ​​tubes near the burst area, seriously affecting the safe operation of the boiler

Method used

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  • Method for intelligently managing wall temperature of final superheater and final reheater of boiler of power station
  • Method for intelligently managing wall temperature of final superheater and final reheater of boiler of power station
  • Method for intelligently managing wall temperature of final superheater and final reheater of boiler of power station

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Embodiment

[0029] For a supercritical 600MW power plant boiler in a power plant, the final superheater and final reheater adopt figure 1 The intelligent wall temperature management system shown. Its main components are: computing server, database server, web server, and plant-level monitoring information system (PI system). The web server is respectively connected with the client browser, the database server and the calculation server, the database server is connected with the calculation server, and the database server is connected with the power plant DCS system or MIS system and online measuring points through the plant-level monitoring information system.

[0030] Method provided by the invention comprises the following steps:

[0031] Step 1: Read the online monitoring data of the boiler final stage superheater and final stage reheater in the PI database, and save it in the local relational database.

[0032] The data interface service program regularly triggers the process every ...

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Abstract

The invention provides a method for intelligently managing wall temperatures of a final superheater and a final reheater of a boiler of a power station. The method comprises the following steps of: firstly, building an online monitoring device, then reading online detection data of the final superheater and the final reheater of the boiler in a plant-level supervisory information system database and storing the data into a local relation type database; calculating the steam temperature and the tube wall temperature of each calculation point in the boiler according to the read online detection data; counting the data distribution range of historical temperatures of each screen, each tube and each calculation point of the final superheater and the final reheater and the over-temperature running time of each calculation point; and finally displaying the calculated result in real time. The invention has the advantages of realizing the fast online real-time calculation and the online monitoring and controlling of the wall temperatures of the final superheater and the final reheater of the boiler, realizing the safety operation of the final superheater and the final reheater of the boiler within the service period, and prolonging the service life of the final superheater and the final reheater of the boiler.

Description

technical field [0001] The invention relates to an intelligent wall temperature management method for the final superheater and the final reheater of a power station boiler, belonging to the technical field of power station boilers. Background technique [0002] At present, my country's generating units have entered the development stage of large capacity and high parameters, and a batch of 600MW and 1000MW supercritical generating units have been put into operation one after another. With the increase of boiler parameters, especially the increase of steam temperature, some parameters different from subcritical parameters such as the overheating problem caused by scale in the tube become more prominent. A tube burst in a large-capacity supercritical boiler during operation will not only cause huge direct economic losses, but also cause the hidden danger of continuous tube burst due to the damage of a large area of ​​tubes near the burst area, seriously affecting the safe ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B35/18
Inventor 丁士发陶丽陈端雨刘进王飞杨凯镟张妮乐
Owner SHANGHAI POWER EQUIP RES INST
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