Torsional coupling for electric hydraulic fracturing fluid pumps

A system for pumping hydraulic fracturing fluid into a wellbore, the system comprising:

• a pump for pumping hydraulic fracturing fluid into the wellbore at high pressure;
• the pump having a pump shaft;
• an electric motor having a motor shaft to drive the pump, the electric motor including a variable frequency drive and an alternating current console to control the speed of the electric motor to protect against overheating;
• and
• a torsional coupling connecting the motor shaft to the pump shaft, the torsional coupling comprising:
• a motor component fixedly attached to the motor shaft;
• and
• a pump component fixedly attached to the pump shaft;
• the motor component engaged with the pump component so that when the motor shaft and motor component rotate, the motor component contacts the pump component so that the pump component and the pump shaft rotate;
• the motor coupling component and the pump coupling component spaced to allow radial misalignment, axial misalignment, or angular misalignment of the motor component and the pump component while still allowing engagement of the motor component and the pump component to transmit torque.

A system for conducting hydraulic fracturing operations in a well, comprising:

• hydraulic fracturing equipment, the hydraulic fracturing equipment selected from the group consisting of a hydraulic fracturing pump, a hydraulic motor of a blender, and a hydraulic motor of a hydration unit, the hydraulic fracturing equipment having a hydraulic fracturing equipment shaft;
• an electric motor with a motor shaft to drive the hydraulic fracturing equipment, the electric motor including a variable frequency drive and an alternating current console to control the speed of the electric motor to protect against overheating;
• and
• a torsional coupling connecting the motor shaft to the hydraulic fracturing equipment shaft, the torsional coupling comprising:
• a motor component fixedly attached by to the motor shaft of the electric motor;
• and
• a hydraulic fracturing equipment component fixedly attached to the hydraulic fracturing equipment shaft of the hydraulic fracturing equipment;
• the motor coupling component engaged with the hydraulic fracturing equipment component so that when the motor shaft and motor component rotate, the motor component contacts the pump component, so that the hydraulic fracturing equipment component and the hydraulic fracturing equipment shaft rotate, thereby driving the hydraulic fracturing equipment.