High efficiency seal oil system
AssigneeCircor Pumps North America, LLC
InventorAxel Jaeschke
Life of this patent
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Abstract
A hydraulic system, for example a seal oil system, includes a hydraulic feeding pump having a motor, a hydraulic motor having a generator, a cooler and a storage tank for receiving hydraulic fluid. The hydraulic feeding pump is configured to draw hydraulic fluid from the reservoir and to direct the fluid to one or more consumers (for example mechanical seals). The hydraulic motor installed downstream of the consumer drives an electric generator. The generator can be coupled to a VFD which controls the speed of the hydraulic motor. The electric power, generated by the generator, is fed back into the power grid.
Claims13
A seal oil system, comprising:
- a hydraulic pump having a motor, the hydraulic pump configured to draw seal oil from a reservoir and to direct the seal oil to a seal region of a process pump;
- a hydraulic motor having a motor/generator, the hydraulic motor coupled downstream of the seal region of the main pump to receive the seal oil from the seal region of the process pump, and
- at least one variable frequency drive (VFD) coupled to the motor/generator, the at least one variable frequency drive configured such that energy generated by the motor/generator, driven by the hydraulic motor, is fed into a power grid from which the hydraulic pump draws energy.
Dependencies are inferred from the claim text.