US Patent 9371830 Refueling system for supplying fuel to hydraulic fracturing equipment

A refueling system for supplying fuel to hydraulic fracturing equipment. The refueling system having a main fuel source and at least one pressurization unit. The pressurization unit having a pump, a motor, a motor fuel source, a supply coupling device and a return coupling device. The refueling system having sensors in the one or more supply fuel lines and in the one or more return fuel lines for receiving flow rate information and pressure information, wherein the flow rate information and pressure information is compared to preset limits and a message is transmitted when the flow rate information and pressure information falls below or exceeds the preset limits to adjust rates of operation.