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Bibby, a brand of Altra Industrial Motion, has announced that its HS series of Turboflex disc couplings has been specified as drive couplings on gas turbine power units with outputs up to 64MW.

According to the company, the couplings were specified thanks to their high torque, reliability and zero-maintenance characteristics.

The gas turbine units are essentially modified aircraft engines used to drive generators for power generation and to drive centrifugal compressors for liquefied petroleum gas (LPG) compression.

The HS series is designed to handle challenging applications in oil and gas, water treatment, power generation, marine and pumping applications.

The couplings are manufactured to comply with API671 standards and are produced from fully traceable alloy steel.

Key to the specification of the HS series couplings for gas turbine power generation applications is a design that drives in friction, rather than shear, to the disc assembly joint.

This eliminates the potential for fretting during normal operation and prolongs the life of the coupling.

The HS series is rated for maximum continuous torques from 0.62kNm to 446kNm and speeds from 50,000rev/min to 5,500rev/min (fastest to slowest) in standard configurations.

However, Bibby’s Parametric Design Philosophy means that if a standard design does not exactly fit an application, it can be optimised to suit.

In compliance with the requirements of API671 and in common with all other couplings in the Turboflex range, the HS series offers the benefit of a plug-in design, which facilitates installation.

This enables the couplings to be installed – and the flexible elements (disc packs) changed – without disturbing adjacent machinery.

In addition, these disc couplings are torsionally stiff and backlash free; they will also accept significant levels of angular, radial and axial misalignment without any loss of operating performance, according to the company.

The HS disc couplings are, essentially, fit-and-forget units.

The couplings have no moving parts and therefore do not require any maintenance.

In addition, they do not need lubrication.

The presence of oil in the environment will not affect the operation of the couplings.

The HS series couplings are suitable for environments involving hostile working conditions.

In these environments, the couplings can be adapted using a variety of special materials and surface coatings; Bibby Turboflex HS couplings are fully Atex compliant and can be supplied to meet the rules of, and approval/inspection by, third parties such as Lloyds, DNV and ABS.

For applications where the environment is hazardous, spark-free versions of the HS series couplings are available.

Altra Industrial Motion

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