TSI – L1:

TRANSDUCERS

Dr. Ryszard.Nowicki@ge.com
Big turbines: 2*LP e.g. HITACHI: 800 – 1300 MW
Big turbines: 3*LP e.g. HITACHI: 1100 MW, TC6F-41, 1500rpm
 TSI (Turbine Supervision Instrumentation)
1. Thrust bearing – rotor axial position (Ax): 3* / ( 2* )
2. Rotor Rel Vibr and Positions (XY): N*2 … 2*(N*2)
3. Bearing Seismic Vibr. (ABS): N*2 / N*3
4. Eccentricity (Ecc): 1* / 2*
5. Case Expansions (symmetrical) (CE): M*2
6. Differential Expansions (DE): M*1 … M*2 … M*3
7. Over Speed Detection (ODS): 3*
8. Keyphasor (+ Turn gear protection) (kF): 1* … 2*
9. Temperature of Radial Bearings (TT): N*2
10. Temperature of Thrust Bearing (TT): Min: 2*2=4
11. Temperature of Hydrogen sealings (TT): 2*2=4
TSI: Thrust Bearing Monitoring
TSI: Thrust Bearing Monitoring
TSI: Thrust Bearing Monitoring
TSI: Thrust Bearing Monitoring
TSI: Rotor Relative Vibrations
and Positions
TSI: Rotor Relative Vibrations and Positions
TSI: Rotor Relative Vibrations and Positions
TSI: Rotor Relative Vibrations and Positions
TSI: Rotor Relative Vibrations and Positions
w/ Redundnace
TSI: Rotor Relative Vibrations and Positions
w/ Redundnace
TSI: Bearing Seismic Vibrations
TSI: Bearing Seismic Vibrations
/ bearing pedestals
TSI: Bearing Seismic Vibrations
/ bearing pedestal and cover
TSI: Bearing Seismic Vibrations
/ bearing cover
TSI: Bearing Seismic Vibrations
/ transducer protection housing
TSI: Bearing Seismic Vibrations

SEISMIC TRANSDUCER
(VELOMITOR) UNDER
BEARING COVER;

the BLUE COLOR – it is glue

TSI: Bearing Seismic Vibrations
TSI: Bearing Seismic Vibrations
w/ Redundancy
TSI: Rotor Absolute Vibrations
 Working draft for
ISO/TR 19201
Analytical guidelines for
selecting the appropriate
vibration standard for a
specific machinery

The following describes an analytical

method that can be used when selecting
an International Standard, based on the
dynamics of a given machine,
characterized by the dynamic stiffness
ratio α.
The method is particularly applicable to
ISO 7919 and ISO 10816. The guideline for
this approach is shown on the flow chart in
Figure.
TSI: Rotor Absolute Vibrations
TSI: Rotor Absolute Vibrations
TSI: Rotor Absolute Vibrations
w/ Redundancy
TSI: Eccentricity

(i) is a measurement of Rotor Bow at slow roll

by an Eddy Probe.
It may be caused by any or a combination of a
• fixed mechanical bow,
• misalignment,
• temporary thermal bow, or a gravity bow.

(ii) It is also may be used to

• describe the shift between bearing axis and rotor axis
• calculate shaft attitude angle, which is an indicator of rotor stability
TSI: Eccentricity
TSI: Eccentricity

STATIC SHAFT BOW

TSI: Eccentricity
MAX

STATIC SHAFT BOW

TSI: Eccentricity

Proximity
Probe

>18 in (46 cm)

Maximum
Excursion

Pedestal Pedestal Front Standard

TSI: Eccentricity
TSI: Eccentricity
 TSI: Eccentricity

- split signal from a chosen XY

transducer for ecc measurements
TSI: Case Expansion
TSI: Case Expansion

cc c

cc c
TSI: Case Expansion

Dual measurement comparison

detects uneven growth of the
machine casing.
TSI: Case Expansion
left side
TSI: Case Expansion
right side
TSI: Case Expansion
TSI: Case Expansion
TSI: Case Expansion
TSI: Radial Case Expansion
TSI: Radial Case Expansion

cc

cc
cc c

cc c

cc
cc
TSI: Radial Case Expansion
TSI: Radial Case Expansion
TSI: Relative Expansions
TSI: Relative Expansions
TSI: Relative Expansions
- special fixings
TSI: Relative Expansions
- Redundancy
TSI: Overspeed Detection/
Protection
 TSI: Overspeed Detection/
Protection
Typical gear NOT TRUE gear
(an example of dimensions) (an example of dimensions)

D (5mm) D
A (8mm)
(8mm)
A (7mm)
B (3mm)

B (1mm) C
C 8mm
2mm
TSI: Overspeed Detection/
Protection
TSI: Overspeed Detection/
Protection
 TSI: Keyphasor
{ + Turngear operation monitoring }
 TSI: Keyphasor
{ + Turngear operation monitoring }
 TSI: Keyphasor
{ + Turngear operation monitoring }
 TSI: Keyphasor
{ + Turngear operation monitoring }
w/ Redundancy
TSI: Bearing Metal Temperature
TSI: Bearing Metal Temperature
 TSI (Turbine Supervision Instrumentation)
1. Thrust bearing – rotor axial position (Ax): 3* / ( 2* )
2. Rotor Rel Vibr and Positions (XY): N*2 … 2*(N*2)
3. Bearing Seismic Vibr. (ABS): N*2 / N*3
4. Eccentricity (Ecc): 1* / 2*
5. Case Expansions (symmetrical) (CE): M*2
6. Differential Expansions (DE): M*1 … M*2 … M*3
7. Over Speed Detection (ODS): 3*
8. Keyphasor (+ Turn gear protection) (kF): 1* … 2*
9. Temperature of Radial Bearings (TT): N*2
10. Temperature of Thrust Bearing (TT): Min: 2*2=4
11. Temperature of Hydrogen sealings (TT): 2*2=4