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GTG_1641GR_RRAvon_60Hz.doc
1 x RR Avon 10.5Mw 60Hz Liquid Fueled Mobile Gas Turbine Generator
Asking Price:US $1.1MM
The generating set consists of a Avon-powered gas turbine driving A/C generator and exciter through a speed-reducing gearbox supplying 10.3 mw base, 16 mw peak (depending on ambient temperature) at 13.8 KV. 60 Hz and is designed for starting without and external A/C supply.
The complete installation is mounted on a main and auxiliary trailer designed for transporting all the necessary equipment by road to any site where it is desired to provide and additional or emergency mains power supply. The plant controls are located in a control room at the front of the auxiliary trailer.
The gas generator is a liquid fueled Rolls-Royce Avon maxi type 1533-10LL.
For starting the gas generator is rotated by a 120V D/C motor enclosed within the intake hub fairing. The starter drive incorporates a self-engaging ratchet mechanism.
The power turbine is a single stage unit driven by Avon gas generator exhaust gases.
Power turbine is a single exhaust gases pass through an exhaust duct and silencer to and exhaust stack which discharges the gases to the atmosphere. A splitter type silencer reduces exhaust noise to an acceptable level.
The speed-reducing gearbox is driven by the power turbine through a shaft with flexible couplings. The gear is suitable for full continuous running and can withstand 10% overloads for abort periods. It uses single helical, inviolate gear supported by plain white metal bearings.
The A/C generator is a horizontal salient pole, brushless machine. Excitation is by a revolving armature brushless generator complete with rotation rectifiers and a plot exciter integral with the main exciter. The generator is totally enclosed and cooled by a closed air system. The gas turbine is a fuel-controlled engine, so that the constant conditions of load and ambient atmospheric qualities, engine speed is directly related to the amount of fuel supplied to the gas generator. A Change load requires a related change in fuel supplied to maintain a constant output system and constant A/C frequency the system embodies and electronic governor unit, which monitors critical performance qualities.
The purpose of the Governor Control system is to regulate the flow of fuel into the
gas turbine from minimum engine running conditions to full load within the
boundary of safe working conditions. Plant sequencing signals and gas turbine
signals are therefore processed, and suitably used to operate fuel control valves in the
fuel valve packages. Valves include in these packages also control start-up and stop
functions such as shut-off valves and ignition systems.
The control system is designed as an automatic governor system, to provide stable
operation of the generator set as a whole. It is also designed to achieve long life and
reliable operation with the minimum of servicing and maintenance.
Normal sequencing of the start, run and shutdown cycles is carried out by the auto-
sequencing control system. When all essential supplies are available the start is.
initiated by the operator processing a single button on the local control panel. The
starter motor accelerates the gas generator and after a suitable purge period, fuel is
introduced and ignited, idling speed is then attained. Fuel output is increased and the
gas generator accelerates at a controlled rate, the maximum fuel schedule being
limited as a function of compressor discharge pressure (P2). At 90% synchronous
speed the auto-synchronizer takes control, and raises the set to synchronous speed.
Incoming volts and frequency are matched with running volts and frequency. When
these are within limits, the circuit breaker is closed and a nominal 10% load is applied
for stability purposes. The set can now be loaded as required. In The Operating condition the trailers are joined together so that the gas efflux of the gas generator, which is situated at the rear of the auxiliary trailer, is delivered to drive the power turbine, which is at the front of the main trailer. Before operating the set, the trailers are jacked off their road wheels, linked together by buffers and a connecting seal is interposed between the rear of the auxiliary trailer and the front of the main trailer.
The trailer supper structure, consisting of air intake and exhaust filters and silencers,
is removable for transportation.
Gas Turbine
Gas Generator Description:Rolls Royce gas generator
Type:Maxi 1534-1012L/10
Manufacturer's Number:38201
Base Load:10.3 MW
Peak Load (depending on Temp:16MW
Date Manufactured:March 1977
Date Fist Put Into Service:Sept 1978
Manufacturers No:38201
Hours Run Since New:25308 Hrs.
Number of Starts:1671
Hours Run Since Overhauled:1249
Number of Starts Since Overhauled:74
Type:1534-1012L / 10 Avon Maxis
Shaft:Single shaft 17-Stage
Axial flow compressor:3 stage axial flow turbine
Fuel:Liquid (Distillate)
Compressor:Axial Flow Compressor
3 Stage Axial Flow Turbine
Manufacturer:Avon Rolls Royce Ltd Derby, London, United Kingdom
Reduction Gear
TypeESG 28WH
Serial No:F3010713
Ser. No:HSG28WH
Input Speed (max Speed):6500 ver/min
Output Speed (max Speed):6450r/mim
Normal Speed:1400 r/min
Max Output Torque:85235 NM
Lubricating Oil pressure:2.8 bar
Type:Single Reduction
Manufacturer:GE Marine & Industrial Gears Ltd Bugby England, United Kingdom
A/C Generator
GEC Turbine Generator Ltd
Serial No.:979/01/380F
Kilowatts14,400
Volts:13,800
Connection:Yes
Silent Pole excitation14,400
Rating: 10.3 MW
Volts:13,800
Phase:3
Frequency:60 Hz @1800 rpm
Coolant:Air
M/CF Coolant Temperature:15 deg C
Salient Pole, Brushless Excitation Producing:13.8kv (+/- 5%)
3 Phase - 60 Hz's 1800rev/min.
AC generator with permanent pilot.
Exciter
Excitation System:
Excitation volts:66v
Excitation Amps:730 Amps
Date of Manufacture:1977
Reduction Gear
Type:ESG 28WH
Serial No:F3010713
In put (Maximum Speed):6450 r/min
Out put (Maximum Speed):1800r/min
Norma! Speed:1400 r/min
Maximum Out put torque:85235 NM
Lubricating oil pressure:2.8 bar
Manufacturer:GE Marine & Industrial Gears Ltd Bugby England, United Kingdom
Gas Generator Liquid Fuel
Fuel Supply system comprising a fuel forwarding package and piping to the Avon Fuel System.
Lubrication system comprising a gas generator external oil supply system and an oil supply for the power turbine, gearbox and A/C generator.
Electrical equipment cubicle and fuel control system.
Air Filtration equipment.
Noise attenuation equipment, supply by Cullum Detunners Ltd.
Main and auxiliary trailers supplied by King Truck Equipment Ltd.
Main and auxiliary tractors.
Weigh labels are fixed to each trailer indication the weight of the trailers and tractors.
Weight of each trailer and tractor:
Main Trailer Weight – rear (Road Transport Conditions): 132.5 Tons
Six (6) axle hydraulic elevation c/w power pack48 wheels
Aux Trailer weight – front (Road Transport Conditions):36.2 Tons
DESIGN PARTICULARS
DESIGN DATA:DATUM
Air Inlet Temperature:50 degree C
Ambient Pressure:1013 MB
Maintenance Historical Background
12 March 1988:
Gas generator received in for investigation into breather / sump pressure compressor out –let casing and tower shaft housing checked. But results were negative. Generator re-assembled and tested breather/sump pressure found to be 0.2 HG" and accepted.
30 march 1988:
Avon 4102 oil pump drive shaft fitted
8 July 1988:
Generator received in and stripped, repairs carried out to make serviceable. Generator re-assembled and tested in accordance with R/R overhaul manuals and test procedures.
Note: inspection and test certificated dated 7 July 1988 attached
6 November 1989:
Gas generator received in the following turbine blade failure, generator stripped, cleaned and inspected. Repairs and replacement items carried out and fitted where required. R.T.C overhaul to zero hour's life. Generator reassembled, balanced, and tested all in accordance with R/R overhaul manuals and test procedures. Release for further service C.O # 4552
Note: certificate of inspection dated Nov. 6 1988, July 5, 1990, and July 11, 1990 attached.
The sets comprise the following major items:
Gas Generator Rolls-Royce Avon Maxi
Single shaft 17-stage
Axial flow compressor.
3 Stage axial flow turbine.
Power Turbine:EASI free vortex
Type, Single stage.
Nominal speed 6500/rev/min.
Gear Box:Type ESG28WH
A.C. Generator:Salient pole, brushless excitation producing13.8K volts, (+/- 5%), 3 phase 60Hzs at 1800rev/.min.
Excitation system:A.C generator with permanent magnet pilot.
Fuel supply system comprising a fuel forwarding package and piping to the Avon
Fuel system.
Lubrication system comprising a gas generator external oil supply system and an oil
supply system for the power turbine, gearbox and A/C generator.
Electrical equipment cubicles and fuel control system.
Air filtration equipment
Noise attenuation equipment, supplied by Cullum Detuners Ltd.
Main and auxiliary trailers, supplied by King Truck Equipment Ltd.
Main and auxiliary tractors.
Weight labels are fixed to each trailer indicating the weight of the trailer and tractor.
Tractors not supplied will have on the labels fitted to the main and auxiliary trailers -
Tractors weight at road transport condition - see label on the tractor.
DC Power System:
120 V Dc Battery Bank 150-Ampere Hours.
1. Gas Generator Starter Motor
2. 2 HP Emergency Lubricating Air Pump.
3. 4 HP Fuel Pump.
4. Emergency Lights
5. Unit Control Panel
6. 1 KVA Essential Supply.
AC Power System.
460 v AC 250 A - 3 Phase.
1. 7 HP Gas Generator Air Filter Fan # 1
2. 7 HP Gas Generator Air Filter Fan # 2
3. 4 HP Fuel Pump.
4. 15 HP Gas Generator Ventilation Fan.
5. 6 HP Lubricating Oil compartment Vent. Fan.
6. 20 HP Oil/Air Cooler Fan #
7. 20 HP Oil/Air Cooler Fan # 2
8. 20 HP Oil/Air Cooler Fan # 3
9. 20 HP Oil/Air Cooler Fan # 4
10. 25 HP stand by Lube Oil Pump.
11. Air Condition Unit # 1
12. Air Condition Unit # 2
13. 4 HP Generator Air Filter Fan.
14. HV Equipment 3 KW single phase Heaters.
15. 40 Amp Battery Changer.
B. 55-0-55 V (Center) Tap.
1 lights and heaters.
Technical Data
Engine Driven Oil Pump:Albany Engineering Co. Ltd
Type 13.5 special. Capacity 120gals/min. 500 revs/min. 360 gals/min. 1500 revs/min.
Standby Lube Oil Pump:Albany Engineering Co. Ltd. Type API3 Capacity 165 gals/min.
Emergency Lube Oil Pump:Albany Engineering Co. Ltd. Type GSCentrifugal Capacity 60 gals/min.
A. C. Pump Motor:Brook Motors Ltd. Type E180L25 hp 1500 revs/min. Rating: 19 kw.Induction motor braced for d.o.l. starting:
D. D. Pump Motor:Electrical Power Eng. Co.
Ltd. 2 hp Rating: 2 kw.
Combined Oil / Air Cooler:Spiral Tube (Heat Transfer) Ltd.Air blast type EL 140/2677BFan motor rating 15 kw (GEC D160L)460V 60 Hz. Pressure rating - oil 140 p.s.i.g. Air 200 p.s.i.g.
Duplex Oil Filter:Vokes Ltd.
TypeTS318D
Tank Level Switch:Alan Cob ham Ltd.
Type S/V2
Temperature Regulating Valve:Spirax Sarco Type TW
Pressure Relief Valve:Bock well Manufacturing Co.
Type 560-W
Fuel Supply System
Fuel (Diesel) is supplied from tanks or tankers to the fuel forwarding package then
pumped from the forwarding package to the Avon fuel pump which delivers it at high
pressure to the burners the Avon pump is of the multi piston variable angle swash plate
type, which is controlled by a servo piston activated servo pressure supplied from the P2
and servo control unit.
Fuel For Warding Package.
The package comprises AC and DC motor driven fuel pumps, mounted in parallel, a
duplex & filter and associated pipe work and valves.
The duplex filter incorporates a change over valve the valve thus permits the changing of
a filter while the set is running. Fuel is pumped to the AVON fuel pump via filter, flow
meter, and pressure regulator low-pressure fuel cock and surge/accumulation tank. The
accumulator cushions pressure surges upon closure of the high pressure (H.P.) fuel cockand also caters for thermal expansion.
Automatic Protection Facilities
Pressure senses are incorporates with the fuel system. If pressure drop below pfe
determined setting. Alarm will come and initiate unit shut down. AC pumps fails anft
delivery pressure low DC pump will starts.
Bleeding Air
Bleed the air from the pumps and Avon run either the AC or DC fuel pump.