Vibration analysis for turbines and generators
Vibration analysis is an important tool for monitoring and diagnosing turbines and generators. Turbines and generators operate under high loads and are susceptible to vibrations that can cause serious damage if not detected early. It is therefore important to carry out regular vibration measurements to detect irregularities and deviations from normal vibration patterns. Vibration analysis makes it possible to identify possible causes of vibrations, such as imbalance, misalignment, bearing damage or resonance. By detecting changes in the vibration patterns at an early stage, countermeasures can be taken, such as readjustment or replacement of components, to prevent major damage or even failure of the turbine or generator. Vibration analysis is therefore an indispensable tool for ensuring the reliable and efficient operation of turbines and generators.
Vibrations on turbines and generators, regardless of power class and bearing type, are monitored for impermissible vibration values. Typically, the vibration velocity is monitored. With the Expert Vibro device velocity sensors can be used directly with vibration velocity devices. The sensor signal, which is proportional to the vibration velocity, is measured and converted into an effective value. If vibration acceleration sensors are used, the signal is integrated online and converted into the vibration velocity. The TRMS or peak-peak value is then formed and permanently monitored by limit value channels. If limit values are exceeded, digital outputs are switched or messages are transmitted to control systems via fieldbus.
Application highlights of turbine and generator monitoring
- Monitoring vibrations on hydropower turbines and air gaps
- Damage diagnosis for gearboxes, bearings and shafts on ships
- Used to record and monitor combustion chamber vibrations in gas turbines
- Monitoring and signal evaluation on test stands
- Mobile system (measuring case) for vibration measurement technology on the move
Practical example of turbine and generator monitoring
Cost-effective vibration monitoring of gas turbines
In the case of a retrofit or modernization, small to medium-sized gas turbines often receive a new vibration monitoring system. Delphin provides flexible monitoring systems in applications outside the scope of API670. The cost of a Delphin system is far below that of larger systems and is therefore very popular. In addition to the typical measurement of vibration velocity, temperatures are often recorded and considered in conjunction with the vibrations. In this specific application, small and medium-sized gas turbines are monitored. The connection to the higher-level control system is made via ModBus TCP. The limit value formation is very flexible and the individual alarms are combined into collective alarms.
Typical areas of application
of the monitoring of turbines and generators
- Monitoring of smaller industrial gas turbines
- Monitoring of gas engines
- Monitoring of compressors and compressors
- Monitoring motors and gearboxes
- Monitoring electric motors
Hardware and software for your measurement and testing solution
Flexible, scalable and expandable solution for seamless data acquisition and monitoring
The Loggito device is a compact data logger system designed for the acquisition and recording of measurement data. It has a variety of analog and digital inputs to connect different sensors and signals. The device records the data with high accuracy and stores it on an internal memory or external storage media such as SD cards.
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Data acquisition and analysis
With ProfiSignal Go you can display online data from the Message and Expert hardware in diagram form. Numerous analysis functions, such as zoom, cursor, movable axes, flags, ASCII export and calculation channels, enable fast display of measured values and post-processing.
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Precisely record, autonomously store, automatically transmit and evaluate measured values.
The FPGA-based Expert Logger device is particularly powerful and enables the processing of up to 46 analogue input channels, both at low and high sampling rates. Measured values can be precisely recorded, autonomously stored and automatically transferred to the internet or PC via USB, LAN or WLAN and evaluated.
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Operating and monitoring
ProfiSignal Basic combines the functions of ProfiSignal Go with operating and monitoring elements of process visualisations, e.g. digital and analogue displays, switches, buttons and signal lamps. With Basic, you can create everything from simple visualisation diagrams to complex visualisation systems.
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Modular measuring, monitoring and automation in one device.
The ProfiMessage D device is a state-of-the-art data logger system that has been specially developed for industrial data acquisition and analysis. It offers a wide range of functions such as the recording and storage of measurement data, monitoring of process parameters and alarms in the event of deviations.
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Automate and control
ProfiSignal Klicks supplements ProfiSignal Basic with functions for process automation. Structural diagrams for mapping the process as well as a script language (completely operable with the mouse) enable even the non-informatician to create complex test stand and automation applications with automatic report generation.
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State-of-the-art processor technology and extreme precision for vibration measurement.
The Expert Vibro device is a powerful vibration analysis device that has been specially developed for monitoring and analyzing machine and system conditions. It enables vibration data to be recorded and evaluated in order to detect potential problems or signs of wear at an early stage.
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Fast project planning and analysis of measurement data
With ProfiSignal 20 Go you can visualise your measurement data in just a few steps, both online and offline, in various diagram types, monitor, analyse, archive as a measurement file or export directly in the appropriate file format.
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Intelligent data recorder for synchronous recording of transient and periodic events.
The Expert Transient device enables the recording and evaluation of transient signals over a certain period of time and provides important information for the optimization of processes and systems. The device is characterized by its high accuracy, fast sampling rate and simple operation.
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Visualisation and operation
With ProfiSignal 20 Basic you can create individual diagrams using a wide range of operating and monitoring elements. Both continuous processes (e.g. production data acquisition) and discontinuous measurement tasks (e.g. test measurements) can be visualised, operated and monitored without any programming effort. You can create the operating and monitoring diagrams by assembling and configuring the prefabricated elements.
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Modular system for use as a measuring, control and monitoring device.
The ProfiMessage devices are a modular, expandable and easy-to-use system for measurement data acquisition, monitoring and automation of machines, systems or test benches. ProfiMessage can be used wherever measured values need to be recorded quickly, precisely and electrically isolated, as well as intelligently pre-processed or monitored.
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Central measurement data management
The Delphin Data Center is the solution used for the worldwide measurement networking and control of plants, machines and test stands.
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PC-supported data acquisition and test stand
The Expert Key device is a measuring and control device that can be used in various applications. It enables the acquisition and evaluation of measurement data as well as the control of processes. The device has various interfaces and can be connected to a wide range of sensors and actuators. It is often used in automation technology, mechanical engineering and research.
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Compact and flexible measurement data laboratory with precision measurement technology.
The LoggitoLab device is ideal for use in laboratory environments, research projects, quality control and other applications where precise data acquisition and analysis is required. It offers a reliable and user-friendly solution for monitoring and recording measurement data.
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Test stand for measurements with potential using an internal data memory.
The LogMessage device is a powerful data logger system designed for the reliable acquisition and recording of measurement data. It offers a variety of analog and digital inputs to connect different sensors and signals. The device records the data with high accuracy and saves it to an internal memory or external storage media.
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