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A MHD turbomachine includes a rotary ferromagnetic rotor, a stationary ferromagnetic stator surrounding the rotor and defining axially-spaced annular cavities which extend circumferentially about and radially from the rotor, and axially-spaced annular ferromagnetic disks surrounding the rotor and mo

A MHD turbomachine includes a rotary ferromagnetic rotor, a stationary ferromagnetic stator surrounding the rotor and defining axially-spaced annular cavities which extend circumferentially about and radially from the rotor, and axially-spaced annular ferromagnetic disks surrounding the rotor and mounted for rotation with the rotor. The disks are disposed in the stator cavities so as to define a pair of annular passages on opposite sides of each disk which are connected in flow communication with one another at inner and outer peripheries of the disk. An electrically conductive fluid occupies the passages and is capable of flowing along an endless path through the passages. A pair of electrodes mounted to the stator radially conduct a flow of electrical current through the fluid between the outer and inner peripheries of the disk. A field coil mounted to the stator generates a magnetic field in axial relation to the stator and disk and transversely across the fluid within the passages. Separate turbine stages disposed adjacent the outer and inner peripheries of the disk extend transversely across the endless path of fluid flow for causing transfer of momentum from the disk to the fluid in an electric generator operating mode of the turbomachine, for producing electrical power, or from the fluid to the disk in an electric motor operating mode of the turbomachine, for producing mechanical power.

대표청구항 ▼

A magnetohydrodynamic turbomachine operable in an electric motor mode for converting electrical to mechanical energy or in an electric generator mode for converting mechanical to electrical energy, said turbomachine comprising: (a) a rotary non-ferromagnetic rotor; (b) a stationary ferromagnetic sta

A magnetohydrodynamic turbomachine operable in an electric motor mode for converting electrical to mechanical energy or in an electric generator mode for converting mechanical to electrical energy, said turbomachine comprising: (a) a rotary non-ferromagnetic rotor; (b) a stationary ferromagnetic stator surrounding said rotor and defining at least one annular cavity extending circumferentially about and radially from said rotor; (c) an annular ferromagnetic disk surrounding said rotor and mounted thereto for rotation therewith and disposed in said annular cavity of said stator so as to define a pair of radially-extending annular passages within said cavity located on opposite sides of said disk and connected in flow communication with one another at inner and outer peripheries of said disk; (d) an electrically conductive fluid occupying said passages and capable of flowing along an endless path through said passages in the same given circumferential direction and in opposite radial directions concurrently with rotation of said rotor in the given circumferential direction; (e) means for radially conducting a flow of electrical current through said fluid between said outer and inner peripheries of said disk; (f) means for generating a magnetic field in axial relation to said stator and disk and transversely across said fluid within said passages; and (g) means disposed adjacent said outer and inner peripheries of said disk and extending transversely across said endless path of fluid flow for transferring momentum from said disk to said fluid in the generator operating mode of the turbomachine for producing electrical power or from said fluid to said disk in the motor operating mode of the turbomachine for producing mechanical power.