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Simpliied schematic showing a Petrotech GE LM2500® gas turbine generator drive application control package integrated into an advanced control system. Shown with dual fuel system. FEBRUARY 2016 PRODUCT BULLETIN: 05004 GE LM2500® GAS TURBINE GENERATOR DRIVE APPLICATION CONTROL PACKAGE T54 THERMOCOUPLE INPUTS APPLICATION CONTROL PACKAGE. The LM2500+G4 gas turbine provides 47,370-shp, and is the most powerful and efficient member of the LM2500 family.
As the Navy proceeds into the twenty first century, gas turbine ships will become more and more abundant.GE's highly-successful, well-proven LM2500 aeroderivative gas turbine is directly derived from GE's CF6 family of commercial aircraft engines and GE's TF39 military engine. The CF6 family is used on DC-10, MD-11, A300, 747 and 767 aircraft, which have logged millions of flight hours. The TF39 military engine is employed on the U.S. Air Force's Galaxy C-5A/B transport aircraft. Currently more than 870 LM2500 gas turbines are in service on a variety of cruisers, frigates, destroyers and patrol boats for more than 24 international navies.In early applications, the LM2500 was rated at 21,500 bhp for the U.S. Navy's DD 963 and DDG 993 class destroyers, the CG 47 class cruisers, and the FFG 7 class frigates. General Electric uprated the LM2500 to 26,250 bhp for the DDG-51 destroyers and the AOE 6 class fast combat support ships. Each DDG-51 ship is powered by four LM2500 gas turbines which are in a combined gas and gas (COGAG) configuration. Each reduction gear combines the input of two LM2500 engines rated at 26,250 brake horsepower (bhp) for a total output of 105,000 bhp per ship. The LM2500 was again uprated in 1993 for use on the US Navy's newest Sealift gas turbine-powered ships. The uprate increased the LM2500 U.S. Navy military specification rating to 29,500 bhp, with the engine actually being rated at 32,000 bhp in the Sealift ships.The LM2500+ is an uprated version of LM2500 which provides lower installed dollar per horsepower and life-cycle costs than the LM2500. The 3600 rpm LM2500+ has been designed for 39,000 brake horsepower (bhp) with a simple cycle thermal efficiency of 39% at ISO conditions. The LM2500+ achieves increased power over the LM2500 primarily by increasing the compressor airflow 23%, with a minimal increase in combustor firing temperature by adding a compression stage (zero stage) to the front of the LM2500 compressor. The temperature capability of the hot section was also increased by adding a thermal barrier coating to the combustor, upgrading turbine airfoil materials and by improving internal cooling designs.- Upgrade your existing LM gas turbine control system to Woodward’s MicroNet Plus programmable control, a highly advanced OEM-qualified control system developed specifically for controlling your GE LM gas turbine. The MicroNet Plus uses Woodward-qualified core software to operate any GE LM2500 and LM6000 SAC or DLE turbine.
- The LM2500 marine gas turbine is a simple-cycle, two-shaft, high-performance engine. Derived from GE's CF6-6 aircraft engines, the LM2500 consists of a gas generator, a power turbine, attached fuel and lube oil pumps, a fuel control and speed governing system, associated inlet and exhaust sections, lube and scavenge systems as well as controls and devices for starting and monitoring engine.
The LM2500 gas turbines drives controllable pitch propellers through a conventional main reduction gear, shaft and clutch. A 16 stage axial flow (air travel is parallel to the shaft) compressor increases the pressure and temperature of the working mass (air). In the combustor section, fuel is added through fuel nozzles and combustion occurs. A two stage high pressure turbine on the exhaust end of the combustor drives the compressor. The combination of the compressor, combustor, and high pressure turbine are often called the gas generator. The exhaust from the high pressure turbine passes through a low pressure turbine which extracts the work required to drive the main reduction gear and ultimately the ship's propeller. The LM2500 module totally encloses the LM2500 to provide thermal and acoustic insulation. A top hatch and a side door (DD/DDG/CG) or two side doors (FFG) provide access to and viewing of the engine. The module is shock mounted to reduce hull-borne noise transmission.
LM2500 Gas Turbine Engine has a 16 stage axial flow compressor made up of a 16 stage Compressor rotor of moving blades driven by the high pressure turbine. The Compressor stator casing contains one stage of Inlet Guide Vanes (IGV), six stages of Variable Stator Vanes (VSV) and 10 stages of stationary stator vanes. The IGVs and stator vanes 1-6 are variable, meaning they are variable geometry. The angle of attack of the blades can be changed to prevent compressor stall. Bleed air is extracted from the compressor for use in the ship's bleed air system and for internal use in the engine.
The combustor is an annular type with 30 fuel nozzles and 2 spark ignitors. Of the air from the compressor approximately 30% is mixed with fuel to support combustion. The other 70% is used to cool and center the flame within the combustion liner.The ignition system produces a high intensity spark to ignite the fuel/air mixture during the start sequence. Once the engine is started the ignitors are no longer needed and will be de-energized.High pressure turbine section extracts enough energy from the hot expanding gasses to drive the compressor and accessory drive. The HP turbine is a two stage axial flow type which is mechanically coupled to the compressor rotor. The HP turbine uses approximately 65% of the thermal energy from the combustor to drive the compressor and engine mounted accessories.The accessory drive assembly is driven through the compressor rotor shaft via the inlet gearbox, radial drive shaft, and transfer gearbox.The Accessory gearbox provides mounting for the fuel pump, lube oil pump, air/oil separator, and pneumatic starter.
The power turbine is a six stage axial flow type turbine. The power turbine extracts the remaining 35% of useable energy and uses this to drive the main reduction gear. The power turbine drives the reduction gear through a high speed flexible coupling shaft and clutch assembly. The high speed flexible coupling absorbs the radial and axial misalignment between the GTM and the main reduction gear.Foriegn Object Damage (FOD) is a major concern of gas turbine engines. FOD is simply debris of one form or other which can damage the internal components of a gas turbine engine. Propulsion and electrical generation turbines are no different than aircraft engines and the hazard FOD represents to the operation of these engines demands the attention of all personnel. On a flight deck periodic 'FOD Walkdowns' keep the operating areas clear of debris. For shipboard engines FOD screens, wire mesh moisture separators, and if operating in a high air particulate environment 'Scott' foam pads are used to filter incoming air and keep the engine operating. An advantage of a gas turbine engine is its ability to be removed from the ship for repair in a short period of time (approximately 72 hours). A set of rails is permanently installed in the intakes of each engine and a set of temporarily installed transition rails allow the disconnected engine to transit from its mounting attachments in the module onto the rails in the intakes. Crane service capable of extending over the soft patches in the intakes is required to pull the engine up the rails and out of the ship.
Sources and Methods
- 62N-116 LM2500 Marine Gas Turbine Engine - Slide Show
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http://www.fas.org/man/dod-101/sys/ship/eng/lm2500.htmMaintained by Robert Sherman
Originally created by John Pike
Updated Saturday, February 27, 1999 7:56:20 AM
LM2500 | |
---|---|
An LM2500 on USS Ford(FFG-54) | |
Type | Aeroderivative gas turbine |
National origin | United States |
Manufacturer | General Electric |
First run | 1960s |
Developed from | General Electric CF6 |
![Lm2500 Lm2500](https://www.phxequip.com/Multimedia/images/equipment/optimized/ge-lm-2500-gas-turbine-generator-50hz-47839.jpg)
The General Electric LM2500 is an industrial and marine gas turbine produced by GE Aviation. The LM2500 is a derivative of the General Electric CF6 aircraft engine.
The LM2500 is available in 3 different versions:
- The LM2500 delivers 33,600 shp (25,100 kW) with a thermal efficiency of 37 percent at ISO conditions. When coupled with an electric generator, it delivers 24 MW of electricity at 60 Hz with a thermal efficiency of 36 percent at ISO conditions.[1]
- The improved, 3rd generation, LM2500+ version of the turbine delivers 40,500 shp (30,200 kW) with a thermal efficiency of 39 percent at ISO conditions. When coupled with an electric generator, it delivers 29 MW of electricity at 60 Hz with a thermal efficiency of 38 percent at ISO conditions.[2][3]
- The latest, 4th generation, LM2500+G4 version was introduced in November 2005 and delivers 47,370 shp (35,320 kW) with a thermal efficiency of 39.3 percent at ISO conditions.[4]
As of 2004, the U.S. Navy and at least 29 other navies had used a total of more than one thousand LM2500/LM2500+ gas turbines to power warships.[5] Other uses include hydrofoils, hovercraft and fast ferries.
In 2012, GE developed an FPSO version to serve the oil and gas industry's demand for a lighter, more compact version to generate electricity and drive compressors to send natural gas through pipelines.[6]
Design and development[edit]
A heavy lift lowers the main propulsion module into the hull of USS Bunker Hill(CG-52) during construction at Ingalls Shipbuilding. The module consists of two General Electric LM2500 gas turbine engines and a Westinghouse gear reduction unit.
The LM2500 was first used on the US Navy GTS Admiral W. M. Callaghan in 1969, after the original FT-4 gas turbines experienced many technical problems[7]. Later, they were used in US Navy warships in the Spruance class class of destroyers and the related Kidd class, which were constructed from 1970. In this configuration it was rated to 21,500 shp (16,000 kW). This configuration was subsequently used into the 1980s in the Oliver Hazard Perry-classfrigates, and Ticonderoga-classcruisers. It was also used by one of People's Republic of China's Type 052 Luhu Class Missile Destroyer (Harbin 112) acquired before the embargo.
The LM2500 was uprated to 26,500 shp (19,800 kW) for the Arleigh Burke-class destroyers, which were initiated in the 1980s and started to see service in the early 1990s, and the T-AOE-6 class of fast combat tanker.
In 2001 the LM2500 (20 MW) was installed in a sound-proof capsule in the South African Navy Valour class (Meko A-200 SAN) frigates as part of a CODAG propulsion system with two MTU 16V 1163 TB93 Propulsion Diesels.
The current generation was uprated in the late 1990s to over 30,000 shp (22,000 kW).
LM2500 installations place the engine inside a metal container for sound and heat isolation from the rest of the machinery spaces. This container is very near the size of a standard 40-foot (12 m) intermodal shipping container - but not the same, the engine size very slightly exceeds those dimensions. The air intake ducting may be designed and shaped appropriately for easy removal of the LM2500 from their ships.
The LM2500+ is an evolution of the LM2500, delivering up to 40,200 shp (30,000 kW) or 28.6 MW of electric energy when combined with an electrical generator. Two of such turbo-generators have been installed in the superstructure near the funnel of Queen Mary 2, the world's largest transatlantic ocean liner, for additional electric energy when the ship's four diesel-generators are working at maximum capacity or fail. Celebrity Cruises uses two LM2500+ engines in their Millennium-class ships in a COGAS cycle.
The LM2500 is license-built in Japan by IHI Corporation,[citation needed] in India by Hindustan Aeronautics Limited,[8] and in Italy by Avio Aero.[citation needed]
The LM2500/LM2500+ can often be found as turbine part of CODAG, CODOG, CODLAG propulsion systems or in pairs as powerplants for COGAG systems.
Applications[edit]
Football manager 2019 mac torrent. Aircraft carrier:
- Italian aircraft carrier Cavour(C 550) (Italian Navy)
- HTMS Chakri Naruebet (Royal Thai Navy)
- Spanish aircraft carrier Príncipe de Asturias (Spanish Navy)
- INS Vikrant (Indian Navy)
Amphibious assault ship:
- USS Makin Island(LHD-8) (United States Navy)
- Spanish ship Juan Carlos I(L61) (Spanish Navy)
- Canberra-classlanding helicopter dock (Royal Australian Navy)
Cruiser:
- Ticonderoga-classcruiser (United States Navy)
Destroyer:
- Arleigh Burke-classdestroyer (United States Navy)
- Hobart-classdestroyer (Royal Australian Navy)
- Atago-classdestroyer (Japan Maritime Self-Defense Force)
- Durand de la Penne-classdestroyer (Italian Navy)
- Gwanggaeto the Great-classdestroyer (Republic of Korea Navy)
- Kidd-classdestroyer (Republic of China Navy)
- Sejong the Great-classdestroyer (Republic of Korea Navy)
- Kongō-classdestroyer (Japan Maritime Self-Defense Force)
- Spruance-classdestroyer (United States Navy)
- Type 052 destroyer (People's Liberation Army Navy)
Frigate:
- Adelaide-classfrigate (Royal Australian Navy)
- Álvaro de Bazán-classfrigate (Spanish Navy)
- Anzac-classfrigate (Royal Australian Navy, Royal New Zealand Navy)
- Baden-Württemberg-classfrigate (German Navy)
- Barbaros-classfrigate (Turkish Navy)
- Brandenburg-classfrigate (German Navy)
- Bremen-classfrigate (German Navy)
- Cheng Kung-classfrigate (Republic of China Navy)
- FREMM multipurpose frigate (French Navy, Italian Navy, Royal Moroccan Navy)
- Fridtjof Nansen-classfrigate (Royal Norwegian Navy)
- Halifax-classfrigate (Royal Canadian Navy)
- Horizon-classfrigate (French Navy, Italian Navy)
- Hydra-classfrigate (Hellenic Navy)
- Naresuan-classfrigate (Royal Thai Navy)
- Oliver Hazard Perry-classfrigate (United States Navy)
- Sachsen-classfrigate (German Navy)
- Santa María-classfrigate (Spanish Navy)
- Shivalik-classfrigate (Indian Navy)
- Valour-classfrigate (South African Navy)
- Vasco da Gama-classfrigate (Portuguese Navy)
- Ulsan-classfrigate (Republic of Korea Navy)
Fast Combat Support Ship:
- Supply-classfast combat support ship (United States Navy)
Maritime Prepositioning Force:
- Watson-classvehicle cargo ship (United States Navy)
Littoral combat ship:
- Independence-classlittoral combat ship (United States Navy)
Maritime Security Cutter, Large:
- Legend-class cutter (United States Coast Guard)
Corvette:
- Ada-classcorvette (Turkish Navy)
- Niels Juel-classcorvette (Royal Danish Navy)
- Sa'ar 5-classcorvette (Israeli Navy)
- BRP Conrado Yap (PS-39) (Philippine Navy)
- Inhauma-classcorvette (Brazilian Navy)
- Pegasus-classhydrofoil (United States Navy)
Mobile version[edit]
The GE TM2500 is derived from the LM2500, and mounted on a trailer that makes it possible to move it to wherever 30MW of temporary electricity generation is required.[9] It can be installed and commissioned in 11 days.[10]
Specification[edit]
Lm2500 Gas Turbine Parts
Specifications for three models of LM2500 series gas turbine engines:
Performance Category | LM2500[11][12][13] | LM2500+[14][15][13] | LM2500+G4[16][17][13] |
---|---|---|---|
Output | 33,600 shp (25,060 kW) | 40,500 shp (30,200 kW) | 47,370 shp (35,320 kW) |
Fuel consumption | 0.373 lb/shp-hr (227 g/kW-hr) | 0.354 lb/shp-hr (215 g/kW-hr) | 0.325 lb/shp-hr (214 g/kW-hr) |
Heat rate | 6,860 Btu/shp-hr (9,705 kJ/kW-hr) | 6,522 Btu/shp-hr (9,227 kJ/kW-hr) | 6,469 Btu/shp-hr (9,150 kJ/kW-hr) |
Exhaust gas flow | 155 lb/s (70.5 kg/s) | 189 lb/s (85.9 kg/s) | 205 lb/s (93 kg/s) |
Exhaust gas temperature | 1,051⁰F (566⁰C) | 965⁰F (518⁰C) | 1,020⁰F (549⁰C) |
Turbine speed (rpm) | 3,600 | 3,600 | 3,600 |
Thermal efficiency | 36% | 38% | 39% |
Weight | 4.7 ton | 5.25 ton | 5.25 ton |
See also[edit]
Related development
Comparable engines
Related lists
Lm2500 Marine Gas Turbine
References[edit]
Lm2500 Gas Turbine Manual Pdf
- ^'LM2500 Marine Gas Turbine Data Sheet'(PDF). GE Aviation. Archived from the original(PDF) on 15 September 2012. Retrieved 4 January 2014.
- ^'LM2500+ Marine Gas Turbine Data Sheet'(PDF). GE Aviation. Archived from the original on 29 July 2012.CS1 maint: BOT: original-url status unknown (link)
- ^Ramsdal, Roald (27 October 2014). 'På disse plattformene fyrer de minst for måkene'. Teknisk Ukeblad. Archived from the original on 28 October 2014.
- ^'LM2500+G4 Marine Gas Turbine Data Sheet'(PDF). GE Aviation. Archived from the original(PDF) on 14 March 2014. Retrieved 27 July 2012.
- ^'GE Marine to Supply IHI with LM2500 Gas Turbines to Power Japan's 15DDG AEGIS Destroyer' (Press release). GE Aviation. 6 May 2004. Archived from the original on 17 October 2006.
- ^'From aircraft to blowout preventer, GE's global technology cross-pollinates'. World Oil Online. 10 September 2012. Archived from the original on 14 March 2014. Retrieved 10 September 2012.
- ^'GTS Admiral W.M. Callaghan | MARAD'. www.maritime.dot.gov. Retrieved 11 August 2020.
- ^GE Marine Solutions Military page
- ^'GE TM2500 Gas Turbine'. VBR Turbine Partners. Retrieved 30 August 2019.
- ^'Mobile Aeroderivative Gas Turbine TM2500'. general Electric. Retrieved 30 August 2019.
- ^'LM2500'. Archived from the original on 13 May 2016. Retrieved 16 May 2016.
- ^'LM2500 engine'(PDF). Archived(PDF) from the original on 22 October 2016. Retrieved 16 May 2016.
- ^ abc'LM2500 series gas turbine engine'. Archived from the original on 25 March 2016. Retrieved 16 May 2016.
- ^'LM2500+'. Archived from the original on 14 May 2016. Retrieved 16 May 2016.
- ^'LM2500+ engine'(PDF). Archived(PDF) from the original on 22 October 2016. Retrieved 16 May 2016.
- ^'LM2500+G4'. Archived from the original on 14 May 2016. Retrieved 16 May 2016.
- ^'LM2500+G4 engine'(PDF). Archived(PDF) from the original on 10 January 2017. Retrieved 16 May 2016.
External links[edit]
Wikimedia Commons has media related to GE LM2500. |
- Official GE Aviation page for LM2500 (GEAE).
- Official GE Aviation page for LM2500+.
- Official GE Aviation page for LM2500+G4.
Retrieved from 'https://en.wikipedia.org/w/index.php?title=General_Electric_LM2500&oldid=975541938'