10
MW Rolls Royce 1533 Avon Mobile Gas Turbine Generator.
10.3 MW base and 16 MW peak. 60 Hz. 13.8kV. Black
start. Liquid fuel.
Silencer. All equipment mounted on main and auxiliary
trailer.
The unit available in 30-40 days from contract, delivered
to US port.
Manufactured 1977, 25,500 total hrs.
$3.2 Million. Owner
will consider any and all offers.
GENERAL
Each generating set consists of an Avon-powered gas turbine driving AJC generator and exciter through a speed reducing gear-box supplying 10.3 MW base, 16 MW peak (depending upon ambient temperature) at 13.8Kv 60Hz and is designed for standing without an external AlC supply.
The complete installation is mounted on a main and an auxiliary trailer designed for transporting all the necessary equipment by road to any site where it is desired to provide an additional or emergency mains power supply. The plant controls are located in a control room at the front and 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 120 volt D/C motor enclosed within the intake bub 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 exhaust gases pass through an exhaust duct and silencer to an exhaust stack which discharges the gases to 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 unit is suitable for full continuous running and can with stand 100/11 overloads for abort periods. It uses single helical, inviolate gears supported by plain white metal bearings.
The A!C generator is a horizontal salient pole, brush less machine. Excitation is by a revolving armature brush less generator complete with rotating rectifiers and a pilot 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 quantities, engine speed is directly related to the amount of fuel supplied to the gas generator. A change in load requires a related change in fuel supply to maintain a constant output speed and consequently, a constant A!C frequency. The system embodies an electronic governor unit, which monitors critical performance quantities.
Specification:
Base load: 10.3 MW
Peak load 16.0 MW
Air Inlet Temperature 50 degree
C Ambient Pressure 1013 mb
Description Avon Industrial Gas Generator
Type 1533-1012L/10
Manufacturers Number 38201
Date of Manufacture March 1977
Date of Manufacture March 1977
Date in service 21 September 1978
Time run since new 25,308.19
Number of Starts 1,671
Time run before last overhaul 19,360 hrs.
Number of starts before overhaul 1465
Main Trailer Weight (Transpol1 Condition) Auxiliary 132.5 tons
Trailer Weight (Transport Condition) 36.2 tons
This Gas generator was stripped cleaned and inspected on 6 November 1989. Repairs and Replacement items carried out and fitted where required. RTC overhauled to zero hours life
15 June 1991
Time run since reconditioned 1249 Hrs.
Number of Starts 74
Time run since new 1249 Hrs.
GAS TURBINES
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 1herefore processed, and suitably used 10 operate fuel control valves in the fuel valve packages. Valves include in these packages also control start-up and s1op 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. V.11en these are within limits, the circuit breaker is closed and a nominal lO% 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.
The sets are identical and comprise
Gas generator:
Rolls-Royce Avon Maxi Single shaft 17 -stage Axial flow compressor, 3 Stage axial flow turbine.
Power Turbine:
Gear Box, EASI free vortex, Type. Single stage.
Nominal speed 6500/rev/min.
Gear Box:
Type ESO28WH
A.C. Generator:
Salient pole, brush less excitation producing 13.8K volts, (+/- 5%), 3 phase 60Hzs at 1800 rev/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 extemaI oil supply system and 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 of1he trailer and tractor.
The weight of each trailer and tractor are as follows:
Main trailer weight (Road transport condition) 132.5 tons
Tractor Weight (Road transport condition) 27 tons
Auxiliary trailer weight (Road transport condition) 36.2 tons
Tractor weight (Road transport condition) 6.6 tons
Tractors will have their weight printed on attached labels.
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.
This volume of the publication deals in detail with the equipment proprietary items are described in the sub-contractor's literature.
AVON Gas Generator and G.E.C. Power Turbine Generator
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
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 Fuel Pump.
5. 6 HP Lubricating Oil compartment Vent Fan.
6. 20 HP Oil/Air Cooler Fan # 1.
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.
I lights and heaters.
Technical Data
Engine Driven Oil Pump Albany Engineering Co., Ltd. Type 13.5 special. Capacity 120
Gals/min. 500 revs/min. 360 gals/min.
Standby Lube Oil Pump Albany Engineering Co., Ltd. Type AP13 Capacity 165 gals/min.
Emergency Lube Oil Pump Albany Engineering Co., Ltd. Type GS Centrifugal Capacity 60 gals/min.
A. C. Pump Motor Brook Motors Ltd. Type E180L 25hp 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 140/2677B.
Fan motor rating 15 kw (GECD160L)
460V 60 Hz, Pressure rating oil 140 p.s.i.g., Air 200 p.s.i.g.
Duplex Oil Filter Vokes Ltd. Type TS 318D
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 A VON fuel pump via filter, flow meter and pressure regulator low-pressure fuel cock and surge/accW11ulation tank. The accumulator cushions pressure surges upon closure of the high pressure (H.P.) fuel cock and also caters for thermal expansion.
Automatic Protection Facilities
Pressure senses are incorporates with the fuel system. If pressure drop below pre-determined setting. Alarm will come and initiate unit shut down. AC pumps fails and delivery pressure low DC pump will starts.
Bleeding Air
Bleed the air from the pumps and A von run either the AC or DC fuel pump.
AVON GAS GENERATOR AND G.E.C. POWER TURBINE GENERATOR
Lubricating
system.
1. A Main system provide oil to the bearing of the power turbine, gear box and AC generator.
B Avon (gas generator) integral lubricating oil system.
2.
Avon gas generator lubricating oil system.
Auxiliary lubricating tank contains a dipstick
level switch. This
tank allows replenishment without shutting down the set.
3.
Main lubricating oil system.
The main system comprises main and auxiliary tanks
mechanically driven and AC and DC oil pumps, duplex
filters temperature and pressure regulating valves and a
cooler. The
system includes six pressure switches, four thermocouples
and differentia pressure gages.
Three pumps are provided one mechanically driven by
the power turbine one driven by AC motor and one driven by
a DC motor. AC
& DC pumps stand by for the mechanically driven pump.
4. Duplex lubricating oil filters. Two duplex oil filters (vokes type 318 LD) with the necessary change over valves filter for isolation/off line and serviced without interrupting the oil flow.
5. Oil/air cooler unit. Four AC motor driven fans used to cool the oil from 85C to 62C.
6. Temperature sensors are of the contacting type. Eight sensors sense the power turbine bearing and thrust drain temperatures. The gearbox bearing temperature and the generator bearing temperature.
Automatic
Protection
The alarm and trips associates with the main lubricating oil system are described below if the mechanical pump oil pressure falls below the setting AC pump will starts if AC pump fails to maintain the required pressure with in the trip timer setting unit will shutdown and DC pump starts to maintain the lubricating pressure for the bearing. If the main oil tank level drops below predetermine level, oil system fault alarm will appear. 6 monthly oil samples to be checked for acidity level of the oil.
AC Generator
The AC generator and exciter are supplied by G.E.C turbine generators limited, the generator switch gear is supplied by G.E.C switch gear limited the basic excitation control circuitry is provided by a brown boveri unitrol 2211 controller (AVR) and this operates in conjunction with a brown boveri 1041 rotor angle regulator. Both units are powered by the output of 130 volts, 240-cycle permanent magnet generator (P.M.G) driven at main generator speed from the shaft of the exciter 110 V DC power for the A.V.R. control and protection circuitry is provided from the DC bus bars.
The AC generator is an air-cooled horizontal foot-mounted, salient pole-revolving field, brush less machine automatic and manual voltage control facilitates are available. Provision for changing form "manual" to "auto" and vice-versa during operation can be made by means of a balancing circuit.
Excitation under current over current and over voltage protection trips the unit.
Bearing temperature and vibration alarm and trips (Phillips type 9266) are available to trip the unit.
An automatic synchronizing unit type PAS manufactured by brush electrical machines limited is fitted.
AC
GENERATOR
Salient Pole, Brushless Excitation Producing 13.8kv (+/- 5%)
3 Phase 60Hzs 1800 rev/min.
Excitation System
AC generator with permanent pilot
1) Generator Specification
Serial No. 3979/01/380F
Kilowatts 14,4000
Volts 13,800
Connection Yes
Coolant Air
MCF Coolant Temp. 15 degree C
Excitation Volts 66V
Excitation Ampere 730 Amp
Date of Manufacture 1977
2) Reduction Gear
Type ESG 28 WH
Serial No. F 3010713
In put (Max. Speed) 6450 r/min
Out put (Max. Speed) 1800 r/min
Normal Speed 1400 r/min
Max. Out Put Torque 85235 NM
Lubricating oil pressure 2.8 bar
Manufacturer GE Marine & Industrial Gears Ltd., Bugby England, United Kingdom
3) Gas Generator Liquid Fuel
Type Rolls-Royce AVON Maxi 1534 10 U
Shaft Single Shaft 17 Stage
Compressor Axial Flow Compressor, 3 Stage Axial Flow Turbine
Manufacturer
AVON Rolls-Royce Ltd., Derby, London, United
Kingdom
Phone: 503-239-5157
Fax: 503-239-5136
Email: milt@rmaglobal.com
Main Entrance
Email: sales@rmaglobal.com Phone: (503) 239-5157 Fax: (503) 239-5136 Copyright 1995-2003: RMA Inc.