• Vibration measuring diagnostics and vibration alignment of main and auxiliary equipment

• ВVibration measuring diagnostics of increased vibration causes for bearing supports and rotors of steam, gas turbines and auxiliary equipment including operation diagnostics for stay and foundation elements.
• Vibration alignment of units, which brings vibration in compliance with rates set in GOST 55265.2-2012 and GOST 55263-2012, and issue of recommendations on repair including:
  • dynamic balancing of unit rotors at high-speed balancing and overspeed facilities;
  • dynamic balancing of unit shaft train rotors in own guide bearings with elimination of disbalance difficult forms;
  • performance of complex vibration examinations for units in various operating modes using multi-channel portable vibration measuring complex VIDAS.
• Examinations of operation misalignments for units, calculation of dynamic stresses in shaft train rotor journals and static responses of supports, subsequent issue of recommendations concerning unit alignment during repair.

• Turbine Plant Vibration Measuring Diagnostics System VIDAS

• Monitoring of vibration parameters, mechanical values and operating parameters.
• Automatic diagnostics of vibration state based on analysis of vibration, thermal-mechanical and operating parameters.
• Works in examination mode (analysis of archive data, spectra, levels, trajectories, vibration modes, etc.).
• Archiving of data on vibration state of turbine plants, thermal-mechanical, operating parameters and results of diagnostics for the whole period of plant operation with the possibility of their subsequent presentation and analysis.
• Determination of optimal arrangement options for balance weights using the program of multiplane dynamic balancing included into the delivery set of VIDAS system. Assurance of “remote service (engineering)” with the least help on site needed from NPO CKTI JSC experts and the maximum coverage of generating equipment.
• The Web-version of VIDAS software was developed in order to ensure full remote service of controlled turbine equipment.

VIDAS system allows determining and localizing a place of occurrence of the following most commonly encountered defects in turbine equipment:

• process disbalance;
• radial misalignment;
• angular misalignment;
• sudden disbalance;
• radial interferences;
• end interferences;
• interferences by oil seals;
• crack in the rotor;
• low-frequency vibration of oil;
• low-frequency vibration of steam;
• babbitt destruction;
• big misalignment of supports;
• low oil clearances;
• turn-to-turn short circuit of generator rotor;
• ventilation disbalance by channels of generator rotor;
• increased dynamic stresses in rotors;
• rupture of tie bolts.

Besides the above mentioned factors, the system can also diagnose various other defects inherent in certain classes of turbine equipment and specific turbine plants.

The algorithms used in the vibration diagnostics system are based on theoretical computation, model studies and full-scale studies, as well as rich experience of NPO CKTI JSC experts gained in the process of vibrational adjustment and operation of steam and gas turbine plants produced by factories in Saint Petersburg, Kharkiv and Ekaterinburg, that operate today in many countries of the world. The diagnostics data is presented in a table format.

• Examinations of newly erected and modernized foundations and the system of stay and foundation elements for turbine plants after their installation or rehabilitation

Examinations of newly erected and modernized foundations and the system of stay and foundation elements for turbine plants after their installation or rehabilitation a using vibration unit to determine the rigidity of stay and foundation elements and develop recommendations on its increase:

• tests for turbine plant foundation girder twisting after assembly;
• test of foundations and “turbine plant-foundation-base” system of main turbine plants in order to determine the conformity of dynamic compliance of stay elements and plant foundation to the parameters set in RTM 108.021.102-85 and RD 24.033.04-88, as well as the evaluation of quality works on foundation erection and mounting of any serial turbine plant performed by the contractor;
• reinforcement of supporting rotor elements, exhaust pipes and condensers of steam turbines, reinforcement of stay and foundation elements for gas turbines.

• Test research and development of designs for full-sized journal (bore inside diameter up to 750 mm) and combined journal-and-thrust bearings for turbine plants.

• Testing of newly developed journal and thrust bearings for steam and gas turbines in order to determine their bearing capacity, reliability and efficiency in various operating modes when reproducing their operating conditions under conditions of an operating power plant.
• Testing of various materials of journal and thrust bearing surfaces for steam and gas turbines in order to determine their bearing capacity, reliability and efficiency in various operating modes when reproducing their operating conditions under in an operating power plant.
• Testing of rotating structures (drill pipes, acceleration couplings, etc.) at the non-standard equipment test rig (for rotors of various lengths and diameters).