Fugesco Inc.80 Leacock Pointe-Claire, Canada

For nearly 20 years, FUGESCO INC. proposes to the hydropower industry, but also to municipalities, a unique and complete mechanical seals up to 4 meters in diameter.

All our products are studied, designed and manufactured by specialists, and our strength resides in our ability to manufacture products specifically adapted to the customer's needs and operating conditions.

Our engineers apply the latest designs and construction principles in order to produce an efficient, practical and reliable product.

Our commitment to quality and customer satisfaction has translated into our ISO 9001-2008 certification.

We remain an independent company, dedicated to servicing the needs of the hydropower industry.

RADIAL TURBINE SEAL

Radial type seals are used in hydroelectric turbines, pump-turbines and large pumps.

The primary purpose of a mechanical radial shaft seal is to maintain a near watertight seal between the turbine shaft and the head cover.

Depending on the pressure under the seal, two or more carbon segmented sealing rings are required. This seal is reliable, relatively simple to install and easy to operate and maintain

All of our radial type shaft seals are fully split or non-split and specifically designed for hydropower generating turbines. The seal can be custom designed and adapted to the existing turbine configuration and specification in order to meet the operating requirements.

For small shaft diameters, these seals can be designed with anti-rotation pins positioned in the cover and in the lower chamber ring to maintain a low seal profile. For easier installation we recommend the use of an intermediate ring with the stop pins located between the two sealing rings in order to facilitate installation. If required, an inflatable seal can be supplied to allow maintenance without dewatering the turbine.

A basic turbine seal consists of a base ring and a cover ring forming the cavity that houses the sealing rings. The cover ring is secured to the base ring that, in turn, bridges the gap between the turbine shaft and the head cover and also serves to house the inflatable seal (if required).

The cover ring can also be designed to act as a reservoir to accumulate water on top of the seal to prevent a dry running condition of the top sealing ring in the event that the turbine is operating under vacuum conditions.

Each sealing ring assembly consists of overlapped and interchangeable carbon segments, compression springs and garter springs. The carbon segments are positioned around the shaft to perform the sealing function.