High-speed balancing systems

Precise technology for balancing flexible rotors in the high-speed range

Steam and gas turbines, turbo generators and turbo compressors are machines that have rotors that often run supercritically and, as flexible rotors, need to be balanced at high speed. The high-speed balancing and centrifugal systems of type HS from Hofmann meet all requirements for the precise balancing of flexible rotors in several planes and at different speeds.

Flexible machine concepts, for example for drive systems and safety structures, enable Hofmann to customize each high-speed balancing and centrifugal system to meet individual project requirements. Thanks to these turn-key solutions, customers can rely on high-precision, customized systems for demanding high-speed applications.

Rotor types

Steam turbines Electric anchor Electric motors Aircraft engines Gas turbines Generators Turbo generators Turbo compressors Turbocharger

Industries

Energy Aviation

Precision for high-speed rotors

High-speed technology for rotors in turbo generators, wind turbines and industrial plants

With the high rigidity and high sensitivity of HOFMANN bearing pedestals, the vibrations of turbomachinery rotors can be reliably and accurately determined at high and low speeds.

Large mounting diameters of the HOFMANN bearing pedestals allow the use of modern tilting pad bearings and a high oil throughput, so that it is possible to react flexibly to balancing requirements.

In addition to precise balancing, rotors from turbomachinery - such as those used in power plants, wind turbines or large industrial plants - are subjected to additional special tests to ensure maximum operational safety and efficiency. These tests provide detailed information about the electrical properties of the system and enable the early detection of winding faults or irregularities. Unplanned downtimes can thus be avoided and costly failures reduced.

Variants

Low and high-speed balancing and centrifugal system

Measuring system for low- and high-speed balancing of elastic rotors

Low and high-speed balancing and centrifugal system

Type HS 16 - 34

The high-speed HS balancing and spin testing systems from Hofmann were developed to precisely balance elastic rotors under near-operational storage conditions and to carry out spin tests. The systems cover rotor weights from a few kilograms up to 100 tons and offer flexible concepts for a wide range of project requirements.

Special features

Isotropic bearing pedestals
- with high rigidity for close-to-operational bearing properties
- with high sensitivity due to Hofmann force measuring principle also suitable for low-speed balancing
- Designed for the use of modern tilting pad bearings (large mounting diameters, high oil throughput, high speeds)
Roller bearings for balancing rotors at low speeds
Flexible concepts for the safety guard
Mathematical verification of the protective device by means of breakdown simulation based on current fragment data

Field of application

High-speed balancing of elastic rotors from turbomachinery
- in atmosphere or vacuum
- at low and high speeds
- in the company warehouse
Spin test at overspeed
Special tests on rotors from electrical machines
Concentricity/runout measurement

Systems for low and high-speed balancing and spinning - type HS26

Measuring system for low- and high-speed balancing of elastic rotors

Type Quasar 2

Quasar 2 is a state-of-the-art measuring system for the economical and precise balancing of elastic rotors. It combines low-speed and high-speed balancing in one system and thus enables flexible, efficient rotor machining. The unbalance can already be distributed to several levels in the rigid state, which reduces modal unbalance and minimizes the effort involved.

The system works with standard measuring hardware, records unbalance as well as process values such as pressure and temperature and displays them clearly. The software supports offline operation, data import from other systems and extensive analysis and logging functions. An optional training module simulates rotor behavior so that operators can learn how to use the system without risk.

Quasar 2 is suitable for high-speed balancing systems from Hofmann and for retrofitting existing systems. It is ideal for rotors from turbomachinery and high-speed rotors, saves time, reduces errors and delivers precise, reproducible results.

Special features

One software for low- and high-speed balancing
Balancing modal and with influence coefficients
Recording of vibrations and process values
Runout measurement and compensation
Extensive display, analysis and logging options
Additional functions for testing rotors from electrical machines (options)
Offline software for preparation and post-processing of balancing projects (optional)
Data interfaces to other known measuring systems (option)
Training module with "virtual" balancing system for generating measured values (optional)
Use of standard measurement hardware for high availability
Standardized documentation - regardless of where a rotor is manufactured, repaired or tested
Save time and avoid errors by eliminating data entry in another system