design and engineering pilot studies deliveries simulations process development certification testing. ICEO. pilot cogeneration plant servicing

Turbine Aerodynamics Laboratory

Main Activities of the lab:

  • Steam Turbine Units Investigation lab includes the research test rig designed for tests of low pressure part steam turbine models– Low Pressure Model Turbine (ETND-2). Test facility was built in 1970 and underwent a significant modernization in 1994–1996 and further in 2008 and 2017.
  • About 20 types of various flow paths of steam turbine LPCs designed by LMZ, Nevsky Factory (Russia), Turboatom Factory (Kharkiv, Ukraine), MAN (FRG), ABB and Alstom (Switzerland) have been tested at this test rig.

Low Pressure Experimental Turbine (ETND-2)

ETND-2:  monitoring and Control System

Test Bed for ETND -2

  • From the beginning of 1970s to the middle of 1990s of the ХХ century on test bed in NPO CKTI researches of flow parts for LMZ, KhTGP, Nevskiy Zavod, as well as MAN.
  • After fundamental modernization since October of 1997 over 900 tests were performed for ABB, Alstom and GE.
  • Eleven different models of flow parts with rotor blades of the last stages from 30 to 50 inches were researched within the wide range of modes both for news and modernized turbines
  • Research Areas
  • Determination of efficiency:

    • for the last stage with diffuser (removable element)
    • for two last stages with diffuser
    • penultimate stage
    • group of first stages
  • Three-dimensional characteristics of flow downstream:

    • last stage (L-0)
    • penultimate stage (L-1)
    • third stage from the end (L-2)
  • Vibration of rotor blades

    • for the last stage (by means of strain-gage sensors and tip timing noncontact method)
    • penultimate stage (tip timing noncontact method)
  • Nonstationary flow downstream:
    • last stage (L-0) 
    • penultimate stage (L-1)
    • guide vane (in gap of the last stage) 
  • Temperature fields
  • Steam humidity downstream each of three last stages
  • ETND-2: vibration, deformation and transitions

Plays in the flow path and temperature monitoring of stay elements

Turbine rotor and hydraulic brake vibration control

  • ETND-2: flow structure research

  • 5-channel pneumatic probes.
  • Evaluation of pressure and velocities in axial, radial and circumferential directions.
  • Up to 3 probes in one section.
  • Subsonic and supersonic calibration of probes on steam.
  • Automatic 2D probe positioning system.
  • Capability of manual probe position selection in the blade channel.

Parameters of the test bed ETND-2

Turbine Model

  • Blades of low pressure stages.
  • Divided shaft (3–5 last stages on 2 shafts).
  • Driven turbine with power of 1.2 MW for idle running of rear rotor stages.
  • Hydraulic brakes with absorbed power of 7.5 MW on each shaft.
  • Simulation factor 1:4–1:3 for turbine 50 Hz.
  • Working medium is water steam

  • Measuring systems and equipment

All researches shall be anticipated with dynamic balancing and experiments in vacuum chamber

Measuring systems, tools, methods and software are developed and used in LPMT:

  • Global data collection system (GLODAS).
  • System of data collection (DAS FLOW) for steady state flow.
  • System of data collection for unsteady state flow DAS Unsteady FLOW.
  • Humidity measurement system WMS.
  • Displacement and deformation measurement system DAS STRUCTURE ANSYS, CFX, SCADA, different DAS/DES.
  • Databases, web applications.
  • Special calibration test bed for 5-channel probe.
  • GLODAS: torque meter, flow rate meter, over 200 static pressure sensors, thermocouples and humidity measurement system (WMS);
  • DAS FLOW: traversing with 5-channel probes and humidity probes;
  • DAS Unsteady FLOW: movable and fixed sensors of dynamic pressure;
  • WMS: 6 optical probes and high-speed video probe;
  • DAS STRUCTURE: strain-gage sensors, tip timing noncontact method, sensors of radial clearances and sensors of axial displacements, thermocouples;
  • Calibration test bed for 5-channel probe: subsonic and supersonic nozzles, superheated steam or wet steam.
  • Standard uncertainty of measured efficiency (1-sigma)

  • ETND-2: Functions
  • Designing of models (together with designers of blades).
  • Designing of shafts, body and other components, production and quality control.
  • Installation, introduction into operation and safe operation of turbine.
  • Research of vibration for blades (110 % – 0 %).
  • Research of aeromechanic dampening.
  • Non-synchronous oscillations Aerodynamics (3D flow) / efficiency researches.
  • Data collection and processing.
  • .Data visualization and their sending to the Customer (web interface).

Works on aerodynamics of paths and noise suppression

  • Design supporting of measures on noise and vibration reduction at gas industry enterprises.
  • Gas dynamics and acoustical calculations, development of structural diagrams of process gas discharge silencers.
  • Comparative analysis of technical solutions on steam bypass paths in half-speed turbine K-1200-6.8/25 newly designed by LMZ.
  • Simulation aerodynamic researches of intermediate- and low-pressure output paths of half-speed turbine K-1200-6.8/25 designed by LMZ.
  • Aerodynamic testing for models of LPC exhaust tubes of 1000 MW turbine made by Skoda (the Czech Republic).

Test bed base using air

  • High-flow rate aerodynamic test bed.
  • Test bed for research of aerodynamics and hydraulic resistances of power-generating equipment.