Development of a Mathematical Model for Obtaining Energy Characteristics of the Turbine Unit with the K-325-23.5 Steam Turbine

Author:

Kravets Taras, ,Riabokon Hryhorii,

Abstract

The results of mathematical modelling of the turbine unit with the K-325-23.5 steam turbine are presented. The mathematical model of the turbine is a system of equations for the components of the heat-balance diagram and the main dependencies of its operating characteristics obtained through the thermal full-scale tests. The developed mathematical model allows adjusting the results of the full-scale tests, creating normative characteristics and conducting research of the intermediate modes of the turbine operation. It is suggested to obtain correction curves for the main parameters of the turbine unit by conducting a simulation experiment on a mathematical model of the turbine instead of carrying out real tests. The correction is done by a complete recalculation of the turbine and its thermal cycle, taking into account the characteristics of the components of the turbine unit and the conditions of its operation during the test. As a result, the main energy characteristics under different operating conditions have been obtained, in particular, correction curves of the main steam consumption and specific heat consumption for the deviation of the initial steam parameters and changes in the heat-balance diagram were built.

Publisher

Lviv Polytechnic National University

Subject

General Medicine

Reference14 articles.

1. 1. Sakharov А.М. Thermal testing of steam turbines / А.М. Sakharov // Moscow - Energoizdat. - 1990. - P.8. (in Russian)

2. 2. IEC 953-2. Rules for steam turbine thermal acceptance tests. Part 2: Method B - Wide range of accuracy for various types and sizes of turbines./ International standard. // First edition. - 1990. - P. 125.

3. 3. DIN 1943. Thermal acceptance tests of steam turbines. / Standard by Deutsches Institut Fur Normung E.V. - 1975. - P. 52.

4. 4. ASME PTC 6-2004. Steam Turbines. Performance Test Codes. / An American National Standard. // The American Society of Mechanical Engineers. - October. - 2005. - P. 67.

5. 5. Typical energy characteristics of the K-300-240 HTGZ turbine unit of the second modification. / SPO ORGRES. // Moscow. - 1976. - P. 13. (in Russian)

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