About the use of gear couplings in gas turbines

 

Gear couplings have been in use for a long time to couple critical equipments. They are mostly chosen for critical equipments for their high power density. It provides more horsepower per weight pound and cubic inch of space. Because they are rough and even, they can withstand any type of beating coming from starts and stops or torque spikes. If properly lubricated, these equipments can last for several years.

 

Gear couplings are used in gas turbines between the turbine and its driving item, be it a compressor, pump, gear box or generator. These couplings are also used in gas turbines for starting and running the accessories and they are required to undertake high loads at start up and large axial movements.

 

Important things to note

 

There are certain things that you must note about gear couplings which include the following:

- They can be arranged according to any specific requirements other than the typical torque and misalignment. 
- They can be built using all light weight strong materials like titanium alloys. 
- The spacer piece can be tailored to get different type of torsional stiffness, only changing the length and diameter. 
- Gear couplings can be built with external gear teeth on the outer part of the sleeve which will help to house any slow speed turning device. 
- They also come with attachments like torque measuring devices.

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