Optimum Selection of the Vibration Monitoring System for Turbomachines

1992 ◽  
Author(s):  
Pavel Rihak ◽  
Reinhold Schmidt
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Vibration Monitoring ◽  
Vibration Measurement ◽  
Simple Method ◽  
Measurement Systems ◽  
Vibration Behavior ◽  
Optimum Selection ◽  
Industrial Gas Turbine ◽  
Selection Of

Different vibration measurement systems are widely used in turbomachines to monitor their vibration behavior. There is, however, little information available for judging, which of the different options (monitoring of casing vibration velocities, relative or absolute shaft displacements) should be selected for a specific machine. The present paper describes a simple method allowing to make this selection. A formula is provided for prediction of the expected ratio of bearing casing vibrations to relative shaft vibrations caused by unbalance. By comparing this ratio to the values prescribed by the specified vibration limits, one can decide which of both systems is more suitable for monitoring purposes. Based on an example of an industrial gas turbine, it will be shown that the procedure results in a selection of the correct vibration monitoring system.

Development of a Case Vibration Measurement System for the DC-990 Gas Turbine

1984 ◽  
Vol 106 (4) ◽  
pp. 935-939
Author(s):  
H. A. Kidd
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Cost Effective ◽  
Industrial Applications ◽  
Vibration Monitoring ◽  
Vibration Measurement ◽  
Monitoring Systems ◽  
Development Programs ◽  
Field Service ◽  
Service Staff

The continued use of gas turbines in industrial applications and increased customer desires for trend analysis has led gas turbine suppliers to develop sophisticated, reliable, cost-effective vibration monitoring systems. This paper discusses the application of case vibration monitoring systems and the design criteria for each component. Engine installation, transducer mounting brackets, types of transducers, interconnecting cables and connectors, charge amplifiers, and signal conditioning and monitoring are considered. Examples are given of the benefits experienced with the final system in several of Dresser Clark’s engine development programs, by manufacturing and production testing, and by Dresser’s field service staff.

Updating the ANSI Standard on Measurement of Exhaust Emissions

1994 ◽  
Author(s):  
J. M. Vaught
Keyword(s):  
Gas Turbine ◽  
Exhaust Emissions ◽  
Measurement Methods ◽  
National Standards ◽  
Turbine Engines ◽  
Measurement Technology ◽  
Gas Turbine Engines ◽  
Regulatory Requirements ◽  
Industrial Gas Turbine ◽  
Selection Of

The American National Standards Institute (ANSI) required that the source testing Standard on Measurement of Exhaust Emissions from Stationary Gas Turbine Engines, B133.9, be brought up to date with today’s regulatory requirements and best measurement technology. The criteria for the design of the Standard along with its content and format are discussed. The selection of measurement methods for gaseous components, smoke, and particulates emitted by present day emission controlled industrial gas turbine engines is presented.

Five Pad Tilting Pad Bearing Design and Lateral Vibration Characteristics of Small Gas Turbine Supported by It and Roller Bearing

2011 ◽  
Author(s):  
Jin Woong Ha ◽  
Ji Ho Myung ◽  
Jhin Ik Suk
Keyword(s):  
Rigid Body ◽  
Gas Turbine ◽  
Dynamic Properties ◽  
Roller Bearing ◽  
Rigid Body Mode ◽  
Conical Shape ◽  
Tilting Pad ◽  
Bearing Design ◽  
Industrial Gas Turbine ◽  
Selection Of

In tilting pad bearing design process, the selection of the proper configuration type of either a Load-Between-Pad (LBP) or Load-On-Pad (LOP) as well as preload and pivot offset conditions is to be carefully considered. Also the bearing needs to be designed in order to be suited for the rotor-bearing system and operating condition. In this paper, it is observed that the static and dynamic characteristics of a five pad tilting pad bearing for the LBP and LOP configurations are influenced by the variation of preload and pivot offset. In this context, rotor dynamic analysis of the 5 MW industrial gas turbine supported by the tilting pad bearing at the front and roller bearing at the rear is carried out based on the dynamic coefficients of the tilting pad bearing investigated. The result shows that two rigid body critical modes experience various changes according to the influence of the tilting pad bearing uniquely applied to one side of this machine. Mainly, the second critical speed, the rigid body mode of conical shape with high whirling in the tilting pad bearing, is significantly changed by preload and pivot offset regardless of the LBP and LOP configurations. And the first critical mode, the rigid body mode of conical shape with high whirling in the roller bearing, is sensitively affected by preload applied to the LOP configuration and by its asymmetric dynamic properties.

Updating the ANSI Standard on Measurement of Exhaust Emissions

1995 ◽  
Vol 117 (3) ◽  
pp. 563-568
Author(s):  
J. M. Vaught
Keyword(s):  
Gas Turbine ◽  
Exhaust Emissions ◽  
Measurement Methods ◽  
National Standards ◽  
Turbine Engines ◽  
Measurement Technology ◽  
Gas Turbine Engines ◽  
Regulatory Requirements ◽  
Industrial Gas Turbine ◽  
Selection Of

The American National Standards Institute (ANSI) required that the source testing Standard on Measurement of Exhaust Emissions from Stationary Gas Turbine Engines, B133.9, be brought up to date with today’s regulatory requirements and best measurement technology. The criteria for the design of the Standard along with its content and format are discussed. The selection of measurement methods for gaseous components, smoke, and particulates emitted by present-day emission-controlled industrial gas turbine engines is presented.

scholarly journals Metallurgical Development for Added Reliability of Industrial Gas Turbine Rotating Blades

1968 ◽  
Author(s):  
F. J. Wall
Keyword(s):  
Gas Turbine ◽  
Stress Rupture ◽  
Rotating Blades ◽  
Time Stress ◽  
Corrosion Evaluation ◽  
Long Time ◽  
Industrial Gas Turbine ◽  
Microstructural Studies ◽  
Selection Of

Increased reliability of industrial gas turbine rotating blades in the hot section of turbines has been achieved by utilization of advanced metallurgical techniques. These techniques include vacuum melting master alloy heats, minimizing residual stresses in blades after machining, and increasing the quality of nondestructive inspection of blades during and after fabrication. In addition, long time stress-rupture tests, corrosion evaluation, and microstructural studies on advanced alloys have provided necessary information for selection of turbine blade alloys for future generations of turbines.

Vibration Measurement Techniques on an Industrial Gas Turbine Rotor Train

1998 ◽  
Author(s):  
Stefan S. Florjancic ◽  
Wes Franklin ◽  
Noel Lively
Keyword(s):  
Gas Turbine ◽  
Support System ◽  
Data Reduction ◽  
Dynamic Properties ◽  
Measurement Techniques ◽  
Turbine Rotor ◽  
Vibration Measurement ◽  
Analytical Models ◽  
System Parameters ◽  
Industrial Gas Turbine

The rotordynamic behavior of an industrial gas turbine rotor train was assessed on site, and the sensitivity to unbalance was quantified. An outline of the measurement procedure is given. Differential data reduction with test unbalances was undertaken to minimize the influence of measurement uncertainty. A test unbalance was installed for one run and then shifted by 180° for the consecutive run. With differential data, the effective dynamic properties of the rotor - support - system can be estimated more accurately. A rotordynamic model was used to identify the support system parameters based on measured data. For the analysis, the anisotropic, elliptical vibration orbits were decomposed into two counter-rotating circular orbits, and the support system parameters identified match the originally predicted values well. The methods of differential data reduction, rotor train mode shape presentation, elliptical orbit decomposition, and the link of measurement to analytical models with parameter definition are described. Examples from on-site measurements are included for illustration.

scholarly journals Analysis of the Vibration Measurement and Reduction Possibilities in Linear Infrastructure for Vacuum Rail Technology

2020 ◽  
Vol 3 (1) ◽  
pp. 450-461
Author(s):  
Tomasz Korbiel ◽  
Rafał Rumin ◽  
Jędrzej Blaut ◽  
Stefan Czerwiński ◽  
Jan Kania
Keyword(s):  
Monitoring System ◽  
High Speed ◽  
Reduction Method ◽  
Vibration Reduction ◽  
Vibration Monitoring ◽  
Vibration Measurement ◽  
Research Centers ◽  
High Speed Rail ◽  
Linear Infrastructure ◽  
Variable Characteristic

Abstract The paper presents the concept of vibration measurement and reduction system for rails in hyperloop technology. It is based on the experience of measuring vibrations in high-speed rail, the first commercial magnetic rail, and vibration reduction systems for these rails. The authors outlined a conceptual vibration monitoring system based on the MQTT protocol and the vibration reduction method. The vibration reduction systems based on variable-characteristic silencers and solutions used in research centers, especially in CERNie and LIGO, were de-scribed.

scholarly journals A Thing Speak IoT Based Vibration Measurement and Monitoring System Using an Accelerometer sensor

2021 ◽  
Vol 9 (8) ◽  
pp. 1249-1258
Author(s):  
shubhangi Kumari
Keyword(s):  
Internet Of Things ◽  
Real Time ◽  
Monitoring System ◽  
Web Applications ◽  
Current Model ◽  
Vibration Monitoring ◽  
Vibration Measurement ◽  
Prototype System ◽  
Accelerometer Sensor ◽  
Data Collections

Abstract: This paper presents the development of a Thing Speak IoT on a Real-Time Vibration measurement System using the accelerometer Sensor. Many systems have been designed previously but some lack systems are identified where it does not provide adaptively connections and alert to web pages on logging data collections. Thus, understanding the previous system model is important to compare the importance of new build parameters in designing the new system. An evaluation of the current model, hardware, and software is important before a new architecture is developed. This research has developed a prototype system to monitor and measure the vibration of a system remotely and setting up threshold and alert accordingly. The designed system assisted with an internet as vibration monitoring system for the machines. Research methods consist of two parts involved hardware and software development. The hardware development covers the connections of the accelerometer sensor and the software involved in constructed coding using the C language program. The program then is compiled and uploaded into the Node MCU to display the acceleration of the system. An open-source Internet of Things called Thing Speak is used as a platform to retrieve and display the collected data. Real-time monitoring can be accessed through Smartphone and web applications. This study has been considered successfully implemented and it is a significant study that performs on new IoT platforms and adaptively ready to monitor a vibration remotely. Keyword: Accelerometer Sensor, Internet of Things, Thing Speak, Real-Time.

scholarly journals Turbine Blade Vibration Monitoring System

1992 ◽  
Author(s):  
T. Kawashima ◽  
H. Iinuma ◽  
T. Wakatsuki ◽  
N. Minagawa
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Turbine Blade ◽  
Optical Fibers ◽  
Cooling System ◽  
Vibration Monitoring ◽  
Turbine Engines ◽  
Gas Temperature ◽  
Blade Vibration ◽  
Turbine Engine

This paper describes a development and an evaluation of an optical blade vibration monitoring system applicable to gas turbine engine high pressure turbine blading. The system uses high intensity He-Ne lasers, optical fibers and associated electronics, and can monitor rotor blade vibration under engine running conditions. With a combined water and air probe cooling system, it can be used for monitoring turbine blade vibration at 1300 degree C range gas temperature. The system was applied to actual gas turbine engines and has demonstrated it’s effectiveness as a useful tool for gas turbine blade vibration evaluation.

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