FGE is the Exclusive Canadian Supplier for
EAML Submersible Turbine Generator Equipment
Why Submersible Turbine Generators?
Submersible turbine generator (STG) installations bring advantages conventional turbines cannot supply. Over 400 units sold and operating worldwide.
STGs do not need a powerhouse. As a result construction costs are reduced. All that is required is a smaller control housing structure, which can be located at a distance from the submersible installation.
STGs are simple to install, remove and service. The STG unit holds in place under its own weight and water pressure, during operation. Stop the flow and the unit can be removed for inspection, blade adjustments and servicing.
Small Installation Space
The STG unit is an all-in-one package and as a result, it utilizes space more efficiently than conventional hydroelectric installations.
A conventional generator is not designed for exposure to water or submergence. An STG unit is always in the water. Where units are installed, plant floods are no longer a concern.
Low running sound
As the STG unit is always in water, the running sound is dampened significantly by the water. This is a valuable advantage in developments where multipurpose usage, such as in parks and other touristed sites, is a concern.
Induction generator is designed for submersible applications. Class F insulated stator winding rated 155゜C. Available liquid temperature is up to 40゜C.
Cable enter the junction box through a patented double sealing gland combined with a strain relief function. The junction box is hermetically sealed from the generator.
Roller and ball bearings.
They are lubricated with grease.
Turbines that require a speed increaser are equipped with a planetary gearbox.
The gearbox is lubricated and cooled with gear oil. It has a pressurized system for lubrication, filtration and cooling.
The system for sealing the shaft consists of two mechanical face seals mounted in tandem. An oil chamber in between, containing a special environmentally-safe oil, lubricates and cools the tungsten carbide seal faces.
Each winding is protected by a thermal switch or RTD sensor.
A leakage detector is located well below the windings.
The lower generator bearing is protected by an RTD sensor.
Each unit can also be equipped with the following internal sensors:
Upper bearing temperature sensor (RTD), float switch in upper junction box, gearbox oil pressure sensor and oil temperature.
In order to provide optimal performance over a wide range, four(4) different fixed guide vane angles are available.
EL7570 has five(5) different fixed guide vane angles.
A replaceable wear ring in aluminum bronze or stainless steel will maintain to keep high efficiency.
Runners are available with either four(4) or five(5) blades. The runner blades are available in aluminum bronze or stainless steel and blade angles can be set manually in increments of one(1) degree.
MATERIAL AND COATING
All major cast parts, except the runner and wear ring, are made of high quality cast iron. Parts in contact with water are coated with a two component high solid paint.
In sea water or corrosive applications, epoxy coating and zinc anodes provide the necessary protection.
For more information on our STGs please see our partner site: http://english.eaml1.com/unit.html