Air Preheater Solutions

Renold Gears designs, manufactures and services standard and customised Air Preheater drives.

Design options include: 

Central Drives

Renold designs options for centrally driven Air Preheaters, including worm and helical gearing configurations, which can be designed as drop-in replacements for originally supplied units, or designed to the OEM's specification for new applications.  A central design has a solid output shaft and mounts directly on to the main rotor shaft of the APH, secured by means of a shrink disc. 

 

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Helical Worm Gear Drives

Renold offers a multiple input helical-worm-worm with hollow bore output for direct mount to the drive shaft or it can be supplied with an optional Renold Hi-Tec coupling.  It can be direct mounted to multiple prime movers including AC, DC or air motors.  The drives can be manufactured in a range of sizes to suit power stations from 200 to 1200 MW.  Different torque requirements are dependant on the size of the power station.

 

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Peripheral Drives

Renold supplies options for peripherally driven air preheaters.  A peripheral drive is mounted onto the extremity of the APH.  It is supplied with a solid output shaft onto which a spur gear is mounted, which drives the APH via an externally mounted girth ring gear.

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Bevel Helical Gear Drives

Renold's bevel helical solution is a multi stage design with the option of a solid output shaft, either vertically up or down, and with provision for multiple inputs and integrated holdbacks.  The drives include a self-contained lubrication system.  They can be either gear pump or electric motor driven and can be supplied with separately mounted gear motors for barring.  The main motor is driven by a fluid coupling for soft starts.  The drives can be manufactured in a range of sizes to suit power stations from 200 to 1200 MW. 

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