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General description | Detailed description | Results Presentation

Results Presentation

The tests demonstrate the good operation of the turbo transmission, with the operating parameters within the prescribed limits. There have been realized a planetary gearbox and a HS coupling, with high level performances, international competitive, showed below.

Prime mover/ Driven machine

Gas Turbine/ Electric Generator

Rated power

2000 kW

Maximum overload torque

5 x full load (Transient Condition)

Input speed (nominal requested)

19,000 rpm

Exact input speed at requested output

18,965 rpm

Momentary Overspeed

23,800 rpm

Output speed

1,500 rpm

Duty cycle

Continuous

Gearbox life, Bearing life

> 30 years

Gearbox noise

88 dBA @ 1 m

Efficiency @ 100 % load

>98.0 %

Instrumentation

 

RTD type

PT 100, 3 wire

Low speed journal bearing

1 Duplex Rigid Head RTD

High speed journal bearing

2 off RTD’s

Speed probes

2 Airpax (or equivalent), located on high speed case

Vibration detectors

Provision for vibration sensors as detailed on drawing

Vibration Level

Alarm 4mm/sec rms, Trip 5mm/sec rms

Economic considerations on the project

The major transmission components are expensive and have a significant amount in co-generative plant costs. Reducing transmission costs is an important objective achieved by the project. The initial assessment of the possibility to reduce the major components cost by 25-40% compared to imported ones, has been confirmed. A high performance 2MW gearbox was realized with costs of 60-65% of the equivalent gearbox supplied by Allen Gears (Rolls Royce Group, in operation at cogeneration plant 2xST18 Suplacu de Barcău).

Reducing of the transmission costs was allowed by the integration of the gearbox design and manufacture in the COMOTI - RENK Resiţa partnership. The realization capacity of the gearbox is ensured by C OMOTI (concep t ion, design, rotors balance, instrumentation) and RENK Reşiţa (manufacturing), and for HS coupling by COMOTI.

The 2 MW power transmission, as designed in the project, is integrated to the cogeneration plants offered by COMOTI.

From scientific point of view, the project allowed the consolidation of a stable partnership. At present, INCDT COMOTI has new or in course of realization research projects, with all the partners of this project. It is to be relieved the involving in R&D activity of an important gears manufacturer such as Reşiţa REDUCTOARE S.A. (Reşiţa RENK). On a national point of view, the high performance power transmission realisation, including planetary gearboxes and HS couplings, represents an obvious technical progress. Implementation of them in the future cogeneration plants, will lead to reducing costs of the energy production. From social point of view, this will lead to the involving and education of high qualified personnel, both for fabrication of the transmission and for the operation and maintenance at the cogeneration plant beneficiary.

AWARD 1 for research projects in priority development of energy:


General description | Detailed description | Results Presentation
 

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