High-temperature heating surface such as superheater and reheater of large-sized utility boiler all experiences a relatively severe working conditions. The failure of boiler tubes will directly impact the safe and eco...High-temperature heating surface such as superheater and reheater of large-sized utility boiler all experiences a relatively severe working conditions. The failure of boiler tubes will directly impact the safe and economic operation of boiler. An on-line life monitoring model of high-temperature heating surface was set up according to the well-known L-M formula of the creep damages. The tube wall metal temperature and working stress was measured by on-line monitoring, and with this model, the real-time calculation of the life expenditure of the heating surface tube bundles were realized. Based on the technique the on-line life monitoring and management system of high-temperature heating surface was developed for a 300 MW utility boiler. An effective device was thus suggested for the implementation of the safe operation and the condition-based maintenance of utility boilers.展开更多
随着智能控制系统(Intelligent Control System,ICS)的发展,发电行业所具备的大量数据能够被逐步利用,与机理融合,借助算法提高机组运行的经济性和安全性。本文借助智能控制系统的平台,以滑动平均、最小二乘等方法,建立数据与机理融合...随着智能控制系统(Intelligent Control System,ICS)的发展,发电行业所具备的大量数据能够被逐步利用,与机理融合,借助算法提高机组运行的经济性和安全性。本文借助智能控制系统的平台,以滑动平均、最小二乘等方法,建立数据与机理融合的受热面汽水系统回归模型,通过多维度评估比较模型与实际的差异,判断并定位受热面汽水系统的泄漏情况,以简单直观的画面进行展示。展开更多
文摘High-temperature heating surface such as superheater and reheater of large-sized utility boiler all experiences a relatively severe working conditions. The failure of boiler tubes will directly impact the safe and economic operation of boiler. An on-line life monitoring model of high-temperature heating surface was set up according to the well-known L-M formula of the creep damages. The tube wall metal temperature and working stress was measured by on-line monitoring, and with this model, the real-time calculation of the life expenditure of the heating surface tube bundles were realized. Based on the technique the on-line life monitoring and management system of high-temperature heating surface was developed for a 300 MW utility boiler. An effective device was thus suggested for the implementation of the safe operation and the condition-based maintenance of utility boilers.
文摘随着智能控制系统(Intelligent Control System,ICS)的发展,发电行业所具备的大量数据能够被逐步利用,与机理融合,借助算法提高机组运行的经济性和安全性。本文借助智能控制系统的平台,以滑动平均、最小二乘等方法,建立数据与机理融合的受热面汽水系统回归模型,通过多维度评估比较模型与实际的差异,判断并定位受热面汽水系统的泄漏情况,以简单直观的画面进行展示。
