For more than 70 years Schenck RoTec GmbH has been the world's leading supplier of special high-speed balancing facilities. These are used for balancing of large power plant turbines and generators, high-speed compressors, industrial steam and gas turbines and complex testing of jet engine components. In a constant exchange of experience with our customers, we are developing the balancing facilities and special bearing pedestals of the DH series.
Main areas of application are:
- High speed balancing at operational speed
- Low speed pre-balancing
- Dynamic straightening of flexible rotors
- Testing of material strength by operating rotors at overspeed
- Rotor investigation in operational bearings
- Research & development of jet engine components
Our DH series bearing pedestals are equipped with isotropically supported bearings, providing equal stiffness in all bearing plane radial directions, and are suitable for use at extremely high balancing and test speeds. The stiffness of the bearing supports can be changed through remote-control. This avoids passing through rotor resonances, and ensures high stability especially during over speed tests.
Today, the latest generation of our PC-based expert system CABflex3 is used to balance flexible rotors. The measured values are recorded and stored in raw data format in order to allow the greatest possible flexibility in the analysis of the data. A wide variety of pick-up types can be used. The number of channels is freely configurable. In addition to the calculated correction weights, using the influence coefficient method, various evaluations such as Bode and Nyquist diagrams are available. Calculation of modal residual unbalance, orbit, runout profile, FFT analysis package, bending line, correction optimization and prognosis are just a few of our software options. Network capability and remote diagnostics via modem or Internet complement the software options.
In addition to the moving coil pick-ups installed in the DH series bearing pedestals for unbalance measurement, non-contacting sensors can be used to measure shaft vibration. As a result, the behavior of the rotor in the sleeve bearings can be examined. In particular, rotor deflections at certain locations can be determined, for example on overhanging shafts or in the rotor center.
In order to protect the environment from the dangers of a completely or partially bursting rotor, the construction of a protective structure is necessary. Based on the individual customer requirements and the respective rotor spectrum, Schenck elaborates the most suitable facility concept. For rotor weights up to approx. 12.5 t and 2.0 m diameter, a moveable vacuum chamber with integrated burst protection can be used. The movable part consists of several steel layers, which serve as burst protection. In case of a rotor failure, the occurring energy is absorbed by deformation elements in the foundation. The compact design of this facility allows installation in the workshop area. For medium and large size balancing facilities the construction of an explosion-safe tunnel or bunker is the most economical solution. Thus, rotors with weights up to 400 t and 10 m diameter can be safely tested.
Schenck has the capability to supply complete facility engineering, civil construction works and the entire mechanical part of a high speed balancing and overspeed test facility. This also includes electric main drive, turbo gear, oil supply and evacuation system and much more. Our portfolio ranges from pure engineering work to the turn-key delivery of a complete DH series facility.
-
DH6i - moveable vacuum chamber with integrated burst protection -
DH series - pit type facility for small and mid size turbines and compressors -
DH8 - high speed balancing tunnel for a variety of applications -
DH8 facility equipped with DH50 bearing pedestals as an extension for small and fast spinning rotors -
DH12 facility - mounting of a large generator -
DH13 facility - completely mounted setup with pipes, hoses and rotor, ready for high speed balancing -
DH13 facility - transport of a large steam turbine into the tunnel -
Construction of the steel reinforcement for a burst-proof overspeed tunnel size DH90 -
Special DH R series bearing pedestals with higher stiffness for airlines applications -
Test setup with special DH R series bearing pedestals and sub structure for airlines applications -
Refurbished axial compressor being balanced in a DH6i facility -
DH8 - atmospheric generator facility equipped with electrically isolated bearing pedestals -
Control desk of a DH facility with measuring systems CAB920 and CABflex3, process visualization and drive control -
Virtual plant planning in the 3D CAVE (Computer Assisted Virtual Environment)
Cookie settings
Required
Analysis
Functionality
Required
Required
These Cookies make a website usable by providing basic functions such as page navigation, language settings, and access to protected areas. As the website is unable to function properly without them, you cannot opt out of this kind of Cookies.
Analysis
Analysis
These Cookies allow us, and the service providers (e.g. Piwik Pro) to collect and analyze information and statistics about your interaction with our website. This helps to optimize our website using the findings obtained.
Functionality
Functionality
These Cookies help us to improve the functionality and attractiveness of our websites, and your user experience by saving, for example, your settings, and selections as well as filters, and to recognize your device on subsequent visits.
Cookie settings
We use cookies and similar technologies on this website. In order to allow their use to analyze website usage and to enhance functionality, please click on “Accept”.
To change the settings and select which specific Cookies we are allowed to use, or to obtain more detailed information, please click on “Details”.
