Improving the high-pressure cylinder of the K-220-44-2M turbine at the Loviisa nuclear power station

Shvetsov, V. L.; Kozheshkurt, I. I.; Konev, V. A.; Бойко, А. В.; Usatyi, Oleksandr; Solodov, V. G.; Хандримайлов, А. А.

doi:10.1134/s0040601513020079

Cited by 3 publications

(2 citation statements)

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“…Each unit has a two 200MW class steam turbine installed. These units were modernized by OEM in late 90's [1]. The turbine shaft line consists of a high-pressure part and two low-pressure parts made in impulse technology ( Fig.…”

Section: Loviisa -Nuclear Power Plantmentioning

confidence: 99%

“…Based on available samples of oOEM LSB, a series of tests were conducted to determine a baseline for LSB acceptance criteria. For instance, to find the state-of-theart solution to protect the leading edge of LSB, GE Power conducted a following tests: All blades provided by the power plant were subjected to visual assessment (1). First, the test was carried out on new oOEM LSB.…”

Section: Technical Specification and Manufacture Technology Of The Lamentioning

confidence: 99%

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Reverse engineering methodology as a way of steam turbine blades designing for Loviisa Nuclear Power

2019

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This article concerns a reverse engineering-based design process of last stage blade (LSB) for other original equipment manufacturer (oOEM). For Loviisa Power Plant (Finland) GE designed and delivered a set of oOEM LSBs to be fit into existing low pressure (LP) turbine module steam path. Although cost competitiveness is a one of major selection criterion for steam turbine spare parts components supplier, diversification of suppliers is also a strategic for power plant owner. Considered here is a process of reengineering of oOEM LSB and all relevant challenges related to this process especially management of geometry deviations between reverse-engineered and oOEM blade. In this article, there are a design steps described taken to qualify reverse-engineered design. Moreover, a manufacturing process of the LSB is shown.

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Section: Loviisa -Nuclear Power Plantmentioning

confidence: 99%

Section: Technical Specification and Manufacture Technology Of The Lamentioning

confidence: 99%

Reverse engineering methodology as a way of steam turbine blades designing for Loviisa Nuclear Power

2019

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Research of the Possibility of Operating a NPP Turbine Without a Stage of Damaged Blades

Chernousenko,

Usatyi,

Peshko

et al. 2024

Mechanisms and Machine Science

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Improvement of steam inlet of the high pressure cylinder for K-220-44-2 turbine of the LOVIISA NPP

Solodov

2021

2021 IEEE 2nd KhPI Week on Advanced Technology (KhPIWeek)

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A model for calculating the viscous flow of steam through a conical perforated steam sieve is proposed. The model takes into account the complex geometry of the channels, the results of design and engineering developments and computational studies to optimize the stop valves of the steam line for flow path of the high-pressure cylinder of the K-220-44-2 turbine for the Loviisa NPP are considered (Finland). The main attention during the modernization of stop valves 1 and 2 was paid to the problem of reducing losses on the steam sieve. A number of design features largely offset the effect of a large number of holes. These include the flow around the perforated surface at an angle to the axis of the holes; obstruction of the steam line channel behind the side surface of the steam sieve with three longitudinal ribs, as well as by an annular zone without holes at the junction of the side and bottom surfaces. During modernization the inner diameter of the inlet part of the body in casting was increased, which made it possible to increase the free cross-section of the perforated steam sieve. The proposed design solutions were investigated numerically. The spatial three-dimensional flow of a viscous compressible steam through the flow path was analyzed by numerically integrating the system of Navier-Stokes equations averaged by Reynolds-Favre. The system was supplemented with equations of the differential turbulence model. The integration of the system of Navier-Stokes equations and associated equations was carried out using the author's software package. The calculated subdomains were approximated by unstructured hexahedral meshes. The solver used an implicit difference scheme of finite volumes of the 2nd order of accuracy and a variant of the algorithm that allows efficient splitting of the computational process for multiprocessor platforms. The solid walls were assumed to be adiabatic, the no-slip condition and the equality of effective vortex viscosity to zero were set on them. Turbulent effects were described based on the Menter model and the modified Spalart-Allmaras turbulence model.

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Improving the high-pressure cylinder of the K-220-44-2M turbine at the Loviisa nuclear power station

Cited by 3 publications

References 0 publications

Reverse engineering methodology as a way of steam turbine blades designing for Loviisa Nuclear Power

Reverse engineering methodology as a way of steam turbine blades designing for Loviisa Nuclear Power

Research of the Possibility of Operating a NPP Turbine Without a Stage of Damaged Blades

Improvement of steam inlet of the high pressure cylinder for K-220-44-2 turbine of the LOVIISA NPP

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