FIELD: oil and gas industry.
SUBSTANCE: method involves oil running through a pipeline or its transportation by a main line pump driven by an electric motor. Converting electric power into mechanical power is provided by the interaction of conductors or windings under electric current with magnetic fields after supplying electrical voltage by a rotating rotor of a given mass and a moment of inertia, which is mechanically connected to the pump. During the supply of voltage to the windings at a start-up, mechanical power is accumulated, which is, in turn, obtained when a part of the electric power is converted during the acceleration of the rotor. This accumulated mechanical power is maintained and applied in the steady-state operation mode of the motor in the form of kinetic energy. As a result, a sum of two components of the total mechanical work or energy is obtained: the first is the work of the electric current for rotating the rotor with the pump in the steady-state mode, and the second is the work of the accumulated mechanical power converted from electric power during acceleration of the rotor rotation, which is used together with the first one.
EFFECT: increased efficiency of transportation due to reduction of electric power costs.
1 dwg
