What is two shaft gas turbine?
A two-shaft gas turbine consists of two independent turbines. The first turbine (the high-pressure turbine) is coupled tightly to the compressor and drives the compressor. The second turbine (the power turbine) is not mechanically coupled with the high-pressure turbine, and generates the effective power of the system.
What is a inspection for gas turbine?
All gas turbine inspection and testing is done against the approved drawings, purchase order specifications, purchasers or company standards, and within the practices and rules of the country, state or province and any government decrees, laws, ordinance or regulation as may apply.
What are the two types of gas turbine?
The path the air takes through the engine and how power is produced determines the type of engine. Four types of gas turbine engines are used to propel and power aircraft. They are the turbojet, turbofan, turboprop, and turboshaft.
How is gas turbine performance measured?
A test facility to measure performance of a micro gas turbine was set up and performance parameters such as turbine exit temperature, exhaust gas temperature, engine inlet temperature, compressor discharge pressure and temperature, and fuel and air flow rates were measured.
What is the function of shaft in gas turbine?
A primary shaft carries the compressor and its turbine which, together with a combustor, is called a Gas Generator. A separately-spinning power-turbine is usually used to drive the rotor on helicopters.
What is single shaft gas turbine?
A single-shaft configuration means that both the gas turbine and steam turbine are arranged on one shaft and drive the same generator. Courtesy: Siemens. Having a single generator connected to the grid and less BOP equipment offers financial, operational, and footprint advantages for the single-shaft arrangement.
What is the difference between a single-shaft and a twin-shaft gas turbine?
Single-shaft gas turbines have a cold end drive. The shaft connected to the generator from the compressor side enables the mounting of a long conical diffuser with a high pressure recovery coefficient of around 0.8. The twin-shaft gas turbine arrangement has a hot end drive.
What is CI in gas turbine?
Combustion Inspection (CI) on GE gas turbine (General Electric Frame 6 type; model PG-6541 (B)) A visual inspection of the leading edge of the first-stage turbine nozzle partitions and buckets should be made during the combustion inspection to note any wear or deterioration of these parts.
What is borescope inspection in gas turbine?
Borescope inspection of gas turbine can help view and access impossible or hard to reach areas. Gas turbines operate at the extremely high temperatures, hence professional assistance is necessary for safe NDT (Nondestructive Testing) and RVI (Remote Visual Inspection).
How many types of gas turbine are there?
Generally, three specific types of gas turbine compressors are available: an axial compressor, a centrifugal compressor, and a compressor with a mixed flow.