An analysis of problems arising during operation of the Perm district power plant 800-MW power unit at sliding pressure

被引：1

作者：

Avrutsky G.D. ^{[1
]}

Zakharov A.E. ^{[1
]}

Sargsyan V.A. ^{[1
]}

Frolov M.S. ^{[1
]}

Schwartz A.L. ^{[1
]}

Adamov A.S. ^{[2
]}

机构：

[1] All-Russia Thermal Engineering Institute, Avtozavodskaya ul. 14, Moscow

[2] Perm District Power Plant, A Branch of INTER RAO Elektrogeneratsiya, Dobryanka, Perm krai

来源：

Therm. Eng. | / 9卷 / 615-620期

关键词：

Cyclic load; Damage; Header bottom; High-pressure heater; Sliding-pressure mode; Steam boiler; Steam turbine;

D O I：

10.1134/S0040601515090013

中图分类号：

学科分类号：

摘要：

The occurrence of cracks at locations in which bottoms are welded to the high-pressure heaters’ headers was revealed during planned repairs of the Perm district power plant units. Specialists of the All-Russia Thermal Engineering Institute carried out investigations aimed at obtaining more detailed data on the effect the loading cyclicity and sliding-pressure operating modes have on the reliability of power-generating equipment. Another aim of those investigations was to elaborate recommendations for achieving more reliable operation of power-generating equipment under the conditions of cyclic variation of its load. The state of the main and auxiliary equipment of the Perm district power plant units is analyzed for determining the possibility and advisability of their further operation in sliding-pressure modes. The results obtained from calculating the permissible number of load variation cycles for the headers used in the Perm district power plant units operating under the conditions of startup–shutdown modes are analyzed, and the headers’ residual cyclic service life is estimated. The results obtained from a metallographic investigation of the high-pressure header’s bottom in the welded joint of which a through crack was revealed are presented. Recommendations for examining the header bottoms and for modifying their design in order to improve their operational reliability are given. © 2015, Maik Nauka-Interperiodica Publishing, all rights reserved.

引用

页码：615 / 620

页数：5

共 8 条

[1]

A Standard Instruction on Examining the Metal and Extending the Service Life of the Main Components of Boilers, Turbines, and Pipelines at Thermal Power Plants, (2003)

[2]

Turbine from Different Thermal States and for Shutting It Down, (1980)

[3]

Ivanov V.A., Operating Modes of Large Steam Turbine Units, (1986)

[4]

Regulations for Strength Design of Equipment and Pipelines for Nuclear Power Installations, (1987)

[5]

Regulations for Strength Design of Stationary Boilers and Steam and Hot Water Pipelines, (1999)

[6]

Avrutskii G.D., Krakovskii D.K., Nakhimov V.I., Ostrovetskii R.M., Plotkin E.R., Thermally stressed state of the K-800-240-3 turbine rotors, Therm. Eng, 29, 4, (1982)

[7]

Teplitskii M.G., Prokopenko A.G., Buzlukov V.A., Operation of an 800 MW turbine at sliding pressure, Therm. Eng, 28, 9, (1981)

[8]

Main Components of Thermal Power Plant Boilers, Turbines, and Pipelines. Metal State Examination. Regulations and Requirements, (2008)

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