Vibration Control Products

PRODUCTS FOR VIBRATION REDUCTION IN INDUSTRIAL AND POWER PLANT ENGINEERING

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For vibration reduction in industrial plants and power plants, we prefer to use absorbers and viscoelastic dampers. These systems are mounted directly on the vibrating structure – ideally in the immediate vicinity of the affected area – and have a vibration-reducing effect. They work very efficiently and are characterized by high robustness. This makes them cost-effective and reliable solutions to vibration problems.

Vibration absorbers

Basically, there are different concepts for vibration absorbers: passive systems, semi-active systems and active systems.

Conventional methods for reducing pipeline vibrations in plant engineering often require a strong intervention in the pipeline system, combined with high constructional, financial and time expenditure. Wölfel has developed two absorber systems that effectively reduce pipeline vibrations. They offer significant advantages compared to traditional measures:

● ADD.Pipe is an active pipe damper (ADD stands for Active Damping Device) and can greatly reduce pipe vibrations over a wide frequency range. It is a system with three degrees of freedom consisting of three actuators and reaction masses. Thus, all vibrations in different directions to the pipe axis can be reduced.

● TMD.Pipe is a passive pipe damper (TMD stands for Tuned Mass Damper). Learn more about the system here.

 

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Viscoelastic dampers

Damping as a method of vibration reduction is only effective if the vibrating system is excited at a frequency close to its natural frequency. Due to their design principle, viscoelastic dampers can be used over a wide frequency range. They reduce vibrations by converting kinetic vibration energy into heat, thus damping the motion of the system.

 

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PRODUCTS FOR VIBRATION REDUCTION ON MACHINES

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From machine tools to paper machines and printing machines – in addition to engineering services (e.g. vibration measurement, modal analysis, condition monitoring and transport monitoring), we also offer numerous products for reducing vibrations on the above-mentioned as well as other types of machines:

● Vibration absorbers TMD.X: We develop problem-specific passive absorbers (TMD stands for Tuned Mass Damper) to reduce resonance or tonal (mono-frequency) issues – including the passive pipe absorber TMD.Pipe.

● ADD.Drive: Using the hardware already present in machines or vehicles (e.g. drive amplifiers, motors, motor control, sensors), a vibration problem (e.g. during positioning processes) can often be solved by specifically extending the existing control software. An extensive software library makes it possible to individually adapt the required software modules to the problem.

● ADD.45N: ADD.45N is an active system for broadband damping of mechanical structures. The plug&play system consists of a 45 N actuator (sensor integrated) and a rack. This includes the sensor electronics and a controller for active damping including a power amplifier. Up to two 45 N actuators can be connected to and supplied by one rack. Each controller is parameterized via a separate potentiometer. In addition to closed-loop operation, the system can also be operated with its own hardware. In this case, control signals can be transmitted to the amplifier via a BNC socket and thus the actuator can be controlled. The magnetic feet of the actuator make it easy to attach it to existing structures (retrofit of machines subject to vibration). The cut-off frequency is 8 Hz, further information can be found on the homepage of our subsidiary Micromega.

● ADD.1kN: This product is a 35-kilogram inertia mass actuator with a 1000 N nominal force and an 8 Hz cut-off frequency, which can be used e.g. for active vibration reduction. Further information can be found on the homepage of our subsidiary Micromega.

● ADD.x: Under ADD.x we summarize our further problem-specific developments for active vibration reduction. The systems or system components were developed for specific customer queries and then converted into products. Such a product or customized product development can also be used for the problem on your machine. This includes for example: ADD.IN (inertial mass actuator, mass 80 gr, cut-off frequency 12 Hz), ADD.5N (inertial mass actuator, mass 250 gr, cut-off frequency 21 Hz), ADD-2D-250N (2D-inertial mass actuator, mass 18 kg, cut-off frequency 22,5 Hz), ADD.Sound (6 kN inertial mass actuator with amplifier), ADD.Pipe

Further information can be found on the homepage of our subsidiary Micromega.

 

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