800mw汽轮机末级叶片断裂原因分析及防范措施（Fracture analysis and preventive measures of last stage blade of 800MW turbine）.docVIP

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800mw汽轮机末级叶片断裂原因分析及防范措施（Fracture analysis and preventive measures of last stage blade of 800MW turbine）.doc

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800mw汽轮机末级叶片断裂原因分析及防范措施（Fracture analysis and preventive measures of last stage blade of 800MW turbine）

800mw汽轮机末级叶片断裂原因分析及防范措施（Fracture analysis and preventive measures of last stage blade of 800MW turbine） Fracture analysis of turbine blades 800MW and preventive measures Close the window [] The Beijing Guohua Power Company Suizhong power engineering limited liability company installed 2 Russian 800MW supercritical coal-fired units, #1 put into trial production in July 2000, the #2 machine was put into production in October 2000. According to many problems for the Russian units, Guohua Power Company held a Russian for unit operation experience exchange meeting on September 2000 in Suizhong Power company. The meeting in Tianjin Panshan Power Generation Company in 99.9.10 17:23 and 2000.2.14 3:35 #2 #2 960mm LP last stage blade forty-third and 84 blade fracture accidents are discussed. Cause analysis and preventive measures of 800MW steam turbine blade fracture we prepared before the meeting as the meeting of the exchange of materials were also discussed. Suizhong Power Company as the hub of power plant in Northeast and North China power grid network, to ensure the safe and stable operation of the unit is particularly important. With the companys 25 countermeasureson, Suizhong Power Company developed technical countermeasures against accidents of 800MW steam turbine, to prevent the last blade fracture of the anti accident measures is just one of the. A moving blade profile 1, the effect of blade: the kinetic energy of the vapor and part of the heat into mechanical energy of the rotor in the annular cascade steam passage composed of blades in the. 2, design and manufacture of blades mainly consider the following requirements: The blade should have enough strength and good vibration characteristics, namely, to avoid the resonance region in order to ensure the safe operation of the blade. It should have good aerodynamic characteristics, in order to achieve high efficiency. It should have reasonable structure and good manufacturability, easy to manufacture and installation