Siemens SGT-400 User Manual

Turbine Package Operators Manual
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Chapter 1
Turbine Package System Overview
Engine Core Assembly...................................................................................................................5
General Description...................................................................................................................................5
Air Inlet Casing...........................................................................................................................................5
Compressor Inlet Bearing Housing Assembly........................................................................................5
Compressor Stator Casings......................................................................................................................5
Center Casing and Bearing Housing Assembly......................................................................................6
Combustion System..................................................................................................................................6
Compressor Turbine Outer Casing..........................................................................................................6
Compressor Turbine Nozzle Assembly Stage 1 and Duct .....................................................................6
Turbine Rotor Assemblies ........................................................................................................................6
Power Turbine Outer Casing and Interduct Assembly...........................................................................7
Power Turbine Bearing Housing ..............................................................................................................7
Exhaust Diffuser ........................................................................................................................................7
Auxiliary Gearbox......................................................................................................................................7
Cooling and Sealing Air System...............................................................................................................7
Turbine Instrumentation............................................................................................................................8
Temperature Monitoring........................................................................................................................................... 8
Speed monitoring..................................................................................................................................................... 8
Vibration Monitoring ................................................................................................................................................. 8
Pressure Monitoring................................................................................................................................................. 8
Turbine Core Auxiliary Equipment...........................................................................................................9
Variable Guide Vane (VGV) Actuator....................................................................................................................... 9
Interstage Bleed Valve............................................................................................................................................. 9
P2 Blow-off Valves................................................................................................................................................... 9
Waterwash Nozzles.................................................................................................................................................. 9
Auxiliary Gearbox....................................................................................................................................10
Lubricating Oil System.................................................................................................................11
General Description.................................................................................................................................11
Lubricating Oil Tank ............................................................................................................................................... 11
Lubricating Oil Pumps............................................................................................................................................ 11
Temperature Control Valve.................................................................................................................................... 12
Pressure Control Valve ..........................................................................................................................................12
Lubricating Oil Filters.............................................................................................................................................. 12
Oil Cooler Circuit.................................................................................................................................................... 12

Siemens SGT-400 Specifications

General

Type	Gas Turbine
Frequency	50/60 Hz
Thermal Efficiency	Up to 38%
Applications	Power generation, mechanical drive, CHP
Fuel Type	Natural gas, Diesel
NOx Emissions	<25 ppm

Summary

Engine Core Assembly

Air Inlet Casing

Details the casing that directs incoming air to the compressor.

Compressor Inlet Bearing Housing Assembly

Describes the housing for the inlet bearing and support.

Compressor Stator Casings

Explains the casings for the compressor stator.

Center Casing and Bearing Housing Assembly

Covers the casing for the hot end of the gas generator and combustion system.

Combustion System

Explains the system for mixing, burning, and expanding fuel.

Compressor Turbine Outer Casing

Details the casing for the compressor turbine.

Compressor Turbine Nozzle Assembly Stage 1 and Duct

Describes the nozzle assembly and associated duct.

Turbine Rotor Assemblies

Explains the compressor and power turbine rotor designs.

Power Turbine Outer Casing and Interduct Assembly

Describes the casing for the power turbine and interduct assembly.

Power Turbine Bearing Housing

Details the housing for the power turbine bearings.

Exhaust Diffuser

Covers the diffuser for exhaust gases.

Auxiliary Gearbox

Turbine Instrumentation

Speed monitoring

Uses speed probes for detection and protection.

Lubricating Oil System

Lubricating Oil Tank

Lubricating Oil Pumps

Details main, auxiliary, and emergency oil pumps.

Temperature Control Valve

Pressure Control Valve

Lubricating Oil Filters

Filters lubricating oil flow from main and auxiliary pumps.

Oil Cooler Circuit

Lubricating Oil Tank Level Monitoring

Lubricating Oil System Requirements

Fuel System

Gas Fuel System Components

Off-Skid Block and Vent Valve

Demister or Filter/Coalescer (if applicable)

Fuel Strainer

Block Valves

Vent Valve

Fuel Control Valve/Actuator Assemblies

Meters fuel flow to the burners.

Electronic Control Unit (ECU)

Manages fuel control valve and governor interface.

Fuel Burners

Introduce fuel for combustion.

Igniter

Temperature Monitoring

Monitors gas fuel supply temperature.

Burner Instrumentation

Fuel System Requirements

Ignition System

High Energy Spark Generator

Starting System

AC Electric Drive Motor

Hydraulic Pump Assembly

Hydraulic Motor Assembly

Hydraulic Pump Boost Flow Oil Filter

Starter Clutch

Combustion Air System

Air Inlet Filter - Marine Type (if applicable)

Air Intake Filter - Pulse Type (if applicable)

Air Intake Silencer

Fire & Gas Protection System

System Control and Operation

Describes fire detection, shutdown, and extinguishant release.

System Components

Heat Detectors

Detects fires based on temperature increase.

Infra Red (IR) Flame Detectors

Detects fires using infrared radiation.

Gas Detectors

Detects the presence of flammable gases.

Enclosure ventilation outlet

Enclosure ventilation inlet (if applicable)

Combustion air inlet (if applicable)

General

Extinguishant Bottles

Store and release fire extinguishant.

Instrumentation

Pressure Monitoring

Monitors pressure in extinguishant cylinders.

Position Monitoring

Ventilation Dampers

Isolation Valve

Fire Extinguishant Bottles

Monitors low content status of bottles.

Gearbox and Generator

Gearbox

Provides speed reduction between turbine and generator.

Generator

Converts mechanical energy to electrical energy.

Cooling System

Generator Bearing Lubrication

Lubricates generator bearings from turbine oil system.

Vibration Monitoring

Monitors generator vibration levels.

Generator Winding Temperature Monitoring

Electrical Operation

Generator Control System

Operation

Control Panels and Electrical Equipment Cabinets

Unit Control System

Microprocessor-based system for control and monitoring.

Human / Machine Interface (HMI)

User interface for operation and monitoring.

Unit Operation

Core Instruments

Core Temperature

Fire and Gas

Fuel

Gas Path

Turbine Governor

Shows governor state and governing modes.

Lubrication Oil

Ventilation

Driven Unit

Generator Monitoring & Control

Monitors and protects the generator.

Generator Control Panel (GCP)

Interface for generator control.

Batteries & Battery Charging System

Battery Charger & System Controller

Manages battery charging and DC power system.

24 Volt Batteries

24 Volt DC Battery Charger