A hydraulic actuator device for a hydraulic system filled with an electrically conductive medium, the hydraulic actuator device being situatable or being situated on and/or in the hydraulic system, and including at least one actuator module, which in each case is designed in such a way that at least a portion of the electrically conductive medium is acceleratable into at least one partial volume of the hydraulic system due to its interaction with an electrical current flow generated with the aid of the respective actuator module and/or with a magnetic field created with the aid of the respective actuator module, as a result of which a pressure build-up is creatable in the at least one partial volume of the hydraulic system.

The compact annular linear pump has a duct, with an inlet and an outlet, positioned to surround an inner core. The duct has a fluid with paramagnetic properties disposed within it. Surrounding the duct is a stator having a first end and a second end. The stator has a plurality of slots that is divisible by three. There is a tooth at each end of the stator and between each slot. There is an electromagnetic circuit with three conductors wired in series disposed within the stator. Within each slot is a coil. Each of the three conductors travel through the stator by alternating through pairs of slots, each coil belonging to a single conductor and alternating conductors every third coil pair. The fluid travels from the inlet to the outlet by application of a current generator to the electromagnetic circuit creating a magnetic flux.

The compact annular linear pump has a duct, with an inlet and an outlet, positioned to surround an inner core. The duct has a fluid with paramagnetic properties disposed within it. Surrounding the duct is a stator having a first end and a second end. The stator has a plurality of slots that is divisible by three. There is a tooth at each end of the stator and between each slot. There is an electromagnetic circuit with three conductors wired in series disposed within the stator. Within each slot is a coil. Each of the three conductors travel through the stator by alternating through pairs of slots, each coil belonging to a single conductor and alternating conductors every third coil pair. The fluid travels from the inlet to the outlet by application of a current generator to the electromagnetic circuit creating a magnetic flux.

Magnetic fluid partially fills a channel built into the main body an object (or mechanically attached to it). Magnetic fields are selectively applied in a controlled manner so that the magnetic fields actuate the magnetic fluid into motion and thereby actuates the main body into motion by applying a force to the channel which the magnetic fluid partially fills.

The invention relates to a method and a device for casting a melt 4 of a metallic material by means of a furnace 2 of a low pressure casting device, which furnace 2 has a receiving space 3 and a riser tube protruding into said receiving space 3. By pressurizing the receiving space 3 with compressed air, the melt 4 in the riser tube 12 of the furnace 2 is pressed into a mold cavity 10 of a mold 7, wherein simultaneously, a magnetic field acting against the conveying direction 23 of the melt 4 is applied to the melt 4 of the metallic material by means of a magnetic element 16 arranged in the region of the riser tube 12.

An electromagnetic induction pump includes a tubular internal inductor comprising a plurality of internal combs and of internal coils positioned between the teeth of the internal combs, the inside of the internal inductor forming a cavity; an internal tube positioned around the internal inductor; a pumping canal allowing the circulation of a fluid that is to be pumped, an external tube, the canal being between the internal tube and the external tube; a tubular external inductor positioned around the external tube and comprising a plurality of external combs and of external coils positioned between the teeth of the external combs; the electromagnetic pump further comprising a movement device for moving the internal combs, and able to vary the radial clearance between the internal combs and the internal tube and comprising a first part positioned inside the internal inductor and in connection with the internal combs so as to be able to move them radially, and a second part extending at least partially outside of the internal inductor and being connected to the first part in such a way as to control the first part.

An electromagnetic induction pump includes a tubular internal inductor comprising a plurality of internal combs and of internal coils positioned between the teeth of the internal combs, the inside of the internal inductor forming a cavity; an internal tube positioned around the internal inductor; a pumping canal allowing the circulation of a fluid that is to be pumped, an external tube, the canal being between the internal tube and the external tube; a tubular external inductor positioned around the external tube and comprising a plurality of external combs and of external coils positioned between the teeth of the external combs; the electromagnetic pump further comprising a movement device for moving the internal combs, and able to vary the radial clearance between the internal combs and the internal tube and comprising a first part positioned inside the internal inductor and in connection with the internal combs so as to be able to move them radially, and a second part extending at least partially outside of the internal inductor and being connected to the first part in such a way as to control the first part.

A nuclear reactor is designed to couple the load path of the control elements with the reactor core, thus reducing the opportunity for differential movement between the control elements and the reactor core. A cartridge core barrel can be fabricated in a manufacturing facility to include the reactor core, control element supports, and control element drive system. The cartridge core barrel can be mounted to a reactor vessel head, and any movement, such as through seismic forces, transmits an equal direction and magnitude to the control elements and the reactor core, thus inhibiting the opportunity for differential movement.

A liquid metal-cooled nuclear reactor includes, within a reactor pressure vessel having a reactor core, a multistage annular linear induction pump (ALIP) configured to circulate liquid metal coolant through the reactor core. The multistage ALIP includes multiple sets of induction coils that at least partially define separate, respective stages of the multistage ALIP. The multiple sets of induction coils are configured to be electrically connected to separate, respective polyphase power supplies, such that the stages of the multistage ALIP are configured to be controlled independently of each other to adjustably control a flow of liquid metal coolant through the reactor core based on independent control of the multiple polyphase power supplies.

A liquid metal-cooled nuclear reactor includes, within a reactor pressure vessel having a reactor core, a multistage annular linear induction pump (ALIP) configured to circulate liquid metal coolant through the reactor core. The multistage ALIP includes multiple sets of induction coils that at least partially define separate, respective stages of the multistage ALIP. The multiple sets of induction coils are configured to be electrically connected to separate, respective polyphase power supplies, such that the stages of the multistage ALIP are configured to be controlled independently of each other to adjustably control a flow of liquid metal coolant through the reactor core based on independent control of the multiple polyphase power supplies.