Energy and Process Industries - Noise and Vibration Test and Measurement Solutions
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Verso (Intérieur) page 2 Verso (Intérieur) page 4 Made for Your Demanding World 1- Improve Efciency Test Cells Measuring your Rotating Machinery Improve acceptance testing efciency > Integrated & automated test process and report generation > User friendly operation > Multi-channel real-time processing and monitoring > Universal and multiple sensors’ types: proximity, velocity, acceleration, temperature, strain, pressure, etc Rotating Analysis Fluid Film Bearings Relative shaft vibration is captured with proximity probes. Analyzing this data requires a number of software tools such as orbit and shaft centerline analysis. ORBIGate, the OROS turbomachinery vibration solution, features these analysis and many more analysis tools. These tools display the physical motion of the shaft and let you detect faults such as oil whirl & whip, preload, misalignment, rub and others. Field Testing Travel light for reliable tests > Versatile toolbox for all noise and vibration diagnostic applications > Portable and rugged analyzers for the eld measurements > Installation vibration signatures > Multi-channel simultaneous acquisition for run-up and coast downs > Real-time analysis for eld efciency > Full signal recording for ofce processing and archiving Remote Monitoring > After installation follow-up Optimize costs and predict failure > Random & unrepeatable phenomena > Alarm trigerring warning via email or the Internet > Collect raw signal information for thorough ofce processing Gear boxes have a complex vibration signature, usually occurring at high frequencies. The FFT-Diagnostics tool, such as cepstrum, kurtosis and harmonic markers are necessary to describe and understand the generated vibrations. The virtual tachometers management feature allows the analyst to determine the speed and phase information based on the gear ratio. Noise and Vibration technician, Installation & Maintenance division. > Compressors > Pumps > Hydro Turbines > Wind Mills > Fans and Blowers Reciprocating Machinery > Internal Combustion Engines: Diesel and Gas > Reciprocating Compressors Reciprocating machines are complex installations. They generate specic vibration signatures. The objective is their performance optimization and faults detections. For example, injection delay, valves faults, segmentation wear can be identied with EngineDiag. This software module integrates the machine mechanical properties: number of cylinders, ring order and timing diagram, allowing to provide pertinent decision criteria on the eld. Time signal, overall levels as well as angle-frequency representation on the machine cycle are efcient results for diagnostics. Balancing Imbalance is probably the most common source of vibration on rotating machinery. Depending on the machine and the rotating speed range the rotor can be considered to be rigid or exible. In the rst case, the Single Dual plane balancing module will be used. In the second case a multiplane approach should be preferred and the associated Multiplane module should be used. ODS (Operating Deection Shape) Operating deection shape is an important analysis procedure used to locate machinery and piping system deection during operation. It is based upon simplied geometry description of the machine train. After measuring the vibration response at multiple locations, the mechanical source can be identied. The ODS software module helps to determine vibration sources, a transmission point and eventually a mechanical modication to be implemented. Generators and motors end windings are strongly excited by frequencies at twice the network frequency: any mode nearby that frequency will create high vibration response. FFT analyzers and Modal, the OROS Structural Dynamics module, are well adapted for bump tests acquisition, resonance frequency determination and deection shapes. Blade Modal Testing When blade dynamic structural characteristics should be determined, they are submitted to modal testing: based on impact hammer testing or shaker excitation. Based on multichannel analyzers, vibration response can be captured by accelerometers or strain gauges. Modal, the OROS Structural Dynamics module, can process the FRFs to give the modal characteristics. Damping & Isolation Dynamic coupling between machine trains and their skids or foundations can be a problem during the machine installation and the eld acceptance test. Excitation frequencies should not match the response frequencies of the hosting structure: the mounting choice is key. To tackle this issue, OROS products such as transfer functions, ODS, and damping calculations assist the user in the procedures. Torsional Analysis Torsional vibration and torque uctuation are usual phenomena especially on large internal combustion engines. The OROS torsional software module utilizes a frequency to voltage converter for speed input providing the following information: the angular velocity prole displays RPM variations. 2 pulse train combination detects torsional resonances. Structural Dynamics End Winding Bump Testing Reciprocating Machines Analysis Experts from OROS come on-site for applied trainings. They will help you using your OROS system. They can provide assistance in your measurement. They are also able to recommend optimization in your measurement process depending on your application and eld requirements. > “From rotating analysis to structural dynamic analysis: with my OROS system, I am ready for everything when I go out in the eld.” Damaged roller bearings are common. Their vibration signatures are usually measured with an accelerometer mounted on the bearing housing. In particular, the FFT-Diagnostics module uses envelope demodulation to analyze these vibration sources to determine if the source is from the roller elements or the races. On-Site Measurements & Applied Trainings They trust Oros Roller Bearings Gear Analysis Verso (Intérieur) page 5 Electric Machines > Electric Motors > Power Generators Noise Analysis Octave & Sound Intensity Safety The ambient noise generated from rotating machinery can be evaluated using general tools such as the 1/3 octave analysis. But more thorough measurements can be achieved using the sound power value. The sound intensity technique is often completed in the eld thanks to its portability and adaptability.