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Gearbox for Fracturing Units

IP.com Disclosure Number: IPCOM000238456D
Publication Date: 2014-Aug-27
Document File: 1 page(s) / 15K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure proposes replacement of a currently widely used 8-speed transmission with a simpler, more reliable 2-speed, parallel shaft gearbox capable of producing equivalent pump speeds and torque generated by the current transmissions. Recurring failures of the transmission on currently used fracturing units are resulting in increased downtime and extensive refurbishing and/or replacement costs. The proposed 2-speed gearbox will be a more cost effective alternative than the current transmissions due to its simpler design, lighter weight, smaller footprint, and increased reliability. The design of the gearbox is intended to extend its service life which translates to decreased unit downtime, while the simplicity of the parallel shaft design increases the serviceability of the unit. The gearbox consists of 2 gears (low and high), 2 internal wet clutches, an internal lubricating and cooling system, and 2 torsional couplings attached to the input and output shafts of the gearbox. The design of the gearbox is such that optimal performance of the engine is achieved and ensures that pump over-speed does not occur. Different gear ratios would result in different speed and torque outputs.

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Gearbox for Fracturing Units

This disclosure proposes replacement of a currently widely used 8-speed transmission with a simpler, more reliable 2-speed, parallel shaft gearbox capable of producing equivalent pump speeds and torque generated by the current transmissions. Recurring failures of the transmission on currently used fracturing units are resulting in increased downtime and extensive refurbishing and/or replacement costs. The proposed 2-speed gearbox will be a more cost effective alternative than the current transmissions due to its simpler design, lighter weight, smaller footprint, and increased reliability. The design of the gearbox is intended to extend its service life which translates to decreased unit downtime, while the simplicity of the parallel shaft design increases the serviceability of the unit.

The gearbox consists of 2 gears (low and high), 2 internal wet clutches, an internal lubricating and cooling system, and 2 torsional couplings attached to the input and output shafts of the gearbox. The design of the gearbox is such that optimal performance of the engine is achieved and ensures that pump over-speed does not occur. Different gear ratios would result in different speed and torque outputs.