Wear of Steam Turbine Journal Bearings at Low Operating Speeds

1983 ◽  
Vol 105 (3) ◽  
pp. 313-317 ◽  
Author(s):  
K. F. Dufrane ◽  
J. W. Kannel ◽  
T. H. McCloskey
Keyword(s):  
Steam Turbine ◽  
Journal Bearings ◽  
Optimum Amount ◽  
Turbine Generator ◽  
Lubricant Films ◽  
Low Speeds ◽  
Bearing Damage ◽  
Geometric Changes

Worn steam turbine bearings were inspected and measured during overhaul periods to determine the extent and nature of the wear. Significant wear was found to exist on turbines using low turning gear speeds (10 rpm or less), and the wear occurred in spite of the presence of lift-pump systems. An analysis of the effect of geometric changes from wear on bearing lubrication at low speeds showed that a limited amount of wear may enhance lubrication. The analysis predicts that an optimum amount of wear exists beyond which the altered geometry would accelerate wear. Considerations were also made of the minimum speeds required to generate lubricant films sufficient to avoid bearing damage by the debris sizes typically found in turbine-generator lubricant systems.

Sir Charles Parsons and Electrical Power Generation—a Turbine Designer's Perspective

1994 ◽  
Vol 208 (3) ◽  
pp. 159-176 ◽  
Author(s):  
J R Bolter
Keyword(s):  
Power Generation ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Electrical Power Generation ◽  
Analytical Methods ◽  
State Of The Art ◽  
Electrical Power ◽  
Turbine Generator ◽  
Current State ◽  
The World

Sir Charles Parsons died some three years after the author was born. In this paper the author looks back at the pioneering work of Parsons in the field of power generation. It shows how he was able to increase output of the steam turbine generator from 7.5 kW in 1884 to 50000 kW in 1930 while increasing efficiency from 1.6 to 36 per cent, and relates these achievements to the current state of the art. Blading design, rotor construction and other aspects of turbine engineering are considered. The conclusion is that Parsons and his associates charted the course which manufacturers and utilities throughout the world have continued to follow, although increasingly sophisticated design and analytical methods have succeeded the intuitive approach of Parsons. His constant search for improved efficiency was and is highly relevant to today's concern for the environment. Finally, although it did not become a practical proposition in his lifetime, the paper reviews Parsons' vision of, and continuing interest in, the gas turbine, first mentioned in his 1884 patents.

A Digital Computer Program for Processing Turbine-Generator Acceptance Test Data

1962 ◽  
Vol 84 (3) ◽  
pp. 295-304 ◽  
Author(s):  
G. A. Maneatis ◽  
W. H. Barr
Keyword(s):  
Thermodynamic Properties ◽  
Computer Program ◽  
Steam Turbine ◽  
Test Data ◽  
Digital Computer ◽  
Heat Rate ◽  
Acceptance Test ◽  
Turbine Generator

This paper describes a digital computer program which processes rapidly all of the data taken during a steam turbine-generator acceptance test. Specifically, it determines all thermodynamic properties of steam and water, computes corrected test heat rate, and finally develops a contract heat rate for purposes of comparison with manufacturer’s guarantees. The application of this program on two 330-megawatt units is discussed. The thinking leading to certain key decisions involving the ultimate approach taken is presented for the benefit of those contemplating a similar effort.

Gas Turbine Control System Integration for Royal Caribbean Millennium Class Cruise Liner

2000 ◽  
Author(s):  
David J. Olsheski ◽  
William W. Schulke
Keyword(s):  
Control System ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Waste Heat ◽  
Combined Cycle ◽  
Direct Drive ◽  
Dynamic Features ◽  
Turbine Generator ◽  
Marine Propulsion ◽  
Prime Movers

Traditionally commercial marine propulsion needs have been met with direct drive reciprocating prime movers. In order to increase efficiency, simplify installation and maintenance accessibility, and increase cargo / passenger capacity; indirect electric drive gas and steam turbine combined cycle prime movers are being introduced to marine propulsion systems. One such application is the Royal Caribbean Cruise Line (RCCL) Millennium Class ship. This commercial vessel has two aero-derivative gas turbine generator sets with a single waste heat recovery steam turbine generator set. Each is controlled by independent microprocessor based digital control systems. This paper addresses only the gas turbine control system architecture and the unique safety and dynamic features that are integrated into the control system for this application.

Medway: A High-Efficiency Combined Cycle Power Plant Design

1995 ◽  
Vol 117 (4) ◽  
pp. 713-723 ◽  
Author(s):  
D. M. Leis ◽  
M. J. Boss ◽  
M. P. Melsert
Keyword(s):  
Power Plant ◽  
Steam Turbine ◽  
High Reliability ◽  
System Optimization ◽  
Combined Cycle ◽  
Advanced Technology ◽  
Plant Design ◽  
Turbine Generator ◽  
Combined Cycle Power Plant ◽  
Plant System

The Medway Project is a 660 MW combined cycle power plant, which employs two of the world’s largest advanced technology MS9001FA combustion turbine generators and an advanced design reheat steam turbine generator in a power plant system designed for high reliability and efficiency. This paper discusses the power plant system optimization and design, including thermodynamic cycle selection, equipment arrangement, and system operation. The design of the MS9001FA combustion turbine generator and the steam turbine generator, including tailoring for the specific application conditions, is discussed.

World’s Largest Single-Shaft Gas Turbine Installation

1970 ◽  
Author(s):  
R. C. Gaskins ◽  
J. M. Stevens
Keyword(s):  
Power Plant ◽  
Electric Power ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Turbine Generator ◽  
Base Load ◽  
Turbine Installation

A unique 63,000-kw gas and steam turbine generator has been successfully integrated into a power plant to provide base load electric power and heat feedwater for existing boilers. The unit combined the world’s largest single-shaft gas turbine prototype with innovations of supercharging and a 20,000-kw steam turbine helper on the same shaft. The system, now a part of a Dow Chemical Power Plant in Freeport, Texas, had some minor problems mainly with the prototype turbine and has been in successful base load service since January, 1969.

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