摘要:
A magnetic bearing device, comprising at least a touch down bearing and corrugated damping members inserted into an annular clearance between the bearing and a holding member thereof, the corrugated damping members being held continuously and assuredly at specified positions, wherein the cylindrical holding member (9) is used as a thrust bearing holding member and also as a touch down bearing holding member, the touch down bearing (4), i.e., a pair of rolling bearings (4a, 4b) disposed in upper and lower two stages are stored in the cylindrical holding member (9) around the inner periphery thereof, an annular clearance (G) is formed between the inner peripheral surface of the cylindrical holding member (9) and the outer rings of the pair of the rolling bearings (4a, 4b), a pair of corrugated band steel sheets (8a, 8b) as the corrugated damping members are inserted into the annular clearance (G), and a band-shaped thin metal sheet (10a) is inserted between the corrugated band steel sheet (8a) on the upper stage and the corrugated band steel sheet (8b) on the lower stage, whereby the band-shaped thin metal sheet (10a) functions as a positional displacement prevention means which prevents the pair of corrugated band steel sheets (8a, 8b) from being displaced.
摘要:
The combustor (1) comprises a stationary structure (2; 102) and at least one tubular rotor (3; 3', 3") supported rotatably about an axis (4) by the structure (2; 102) by means of contactless suspension devices (5-8; 5', 5", 6', 6") there being formed within this rotor at least one combustion chamber (20; 20', 20") having at least one orientated lateral outflow aperture (21; 22; 23, 24) for the ejection of the combustion gases. The rotor (3; 3', 3") has a narrow circumferential slot (30; 30', 30") through which there extend at least one controlled stationary injector (31; 31', 31") of fuel and combustion agent and an associated igniter (32; 32', 32") which is also stationary. A control unit (ECU; 35) operates the injector (31; 31', 31") and the igniter (32; 32', 32") according to predetermined procedures, in such a way as to generate a detonation wave which is propagated in the chamber (20; 20', 20"), and to cause the rotor (3; 3', 32) to rotate as a result of the thrust due to the combustion gases emitted through the lateral outflow aperture (21, 22; 23, 24).
摘要:
Magnetische Lagerung einer Rotorwelle gegen einen Stator unter Verwendung eines Hoch-T c -Supraleiters, mit einem an der Rotorwelle drehfest angeordneten ersten Lagerteil umfassend eine Anordnung von nebeneinander angeordneten permanentmagnetischen Elementen mit dazwischen angeordneten Flussführungselementen und einem am Stator vorgesehenen zweiten Lagerteil umfassend eine Struktur aus supraleitendem Hoch - Tc - Material, die über einen Lagerspalt voneinander getrennt sind, wobei Dichtmittel (15, 37) zum Abdichten des Lagerspalts (14, 36) gegen ein Eindringen von Umgebungsluft vorgesehen sind, die eine Bewegung des ersten Lagerteils (3, 23) bezüglich des zweiten Lagerteils (9, 30) bei gleichzeitig beibehaltener Abdichtung zulassen.
摘要:
To provide a magnetic bearing device capable of lowering the costs required for the manufacture, installation, or the like of a turbo molecular pump by reducing the number of elements of an amplifier circuit that drives, through excitation, electromagnets as well as the number of wires of a cable that connects the each electromagnet and the amplifier circuit to each other, and a turbo molecular pump with the magnetic bearing device mounted thereto. One end of an electromagnet coil 151 is connected to a common node R. Also, the other end thereof is connected to an amplifier circuit 410 composed of one transistor 411 and one diode 415. Further, the one end of the electromagnet coil 151 is common with respect to each of the electromagnets, and the common node R is controlled by an intermediate-voltage maintaining circuit 451 so as to maintain an intermediate voltage Vc.
摘要:
The device comprises a) a rotor (20) which can rotate or rotates about a rotational axis (A) and b) at least one magnetic suspension bearing (2, 3), in which the rotor can be or is mounted in a contactless manner and which comprises at least one super-conductive structure in addition to several permanent magnets, and c) a cooling device comprising at least one refrigeration head (22, 23) for cooling the super-conductive structure of the or each magnetic suspension bearing, whereby d) the rotor and each magnetic suspension bearing are arranged in a common gas chamber (60), which is surrounded by a gas-proof wall (61). The advantage of the device is that ice is prevented from forming on the magnetic suspension bearing.
摘要:
Die Erfindung betrifft einen Abgasturbolader (1) mit einem Gehäuse und einer im Gehäuse um ihre Längsachse drehbar angeordneten Welle (2), auf der ein Turbinenrad (4) und ein Verdichterrad (3) sitzen und die in Radiallagern (5, 6) und wenigstens einem Axiallager (9) geführt ist, wobei die Radiallager (5, 6) als passive permanentmagnetische Lager ausgebildet sind, die jeweils eine auf der Welle (2) sitzende Lagerscheibe (12, 16) als Rotor und wenigstens einen diesen an zumindest einer Seite axial gegenüberliegenden Stator (19, 20, 21, 22) aufweisen. Um auf einfache Weise eine radiale Schwingungsdämpfung der Welle (2) zu erreichen, wird gemäß der Erfindung vorgeschlagen, dass zwischen dem Stator (19, 20, 21, 22) und einer gehäusefesten Partie (37, 38) jeweils ein federelastisches Element (60, 61) angeordnet ist.
摘要:
A valve assembly comprises a valve opening (4) which can be sealed and un-sealed by movement of a membrane 6; a force generator, such as an electromagnetic force generator comprising a solenoid (20) and anchor (18) arrangement; and a shaft (8) that is operably connected to the membrane (6) and which is movable along a movement axis (C) under the influence of the generated force to move the membrane (6) and thereby regulate the degree of opening of the valve (44). Bearing assemblies (14;16) are provided to procure a magnetic suspension of the shaft (8), permit its movement along the axis (C), and also to optionally procure a magnetic biasing of the shaft (8) in a direction along the axis (C), particularly in the absence of a generated force.
摘要:
A kit for assisting in the set-up of a fluid pumping or mixing system including a superconducting element capable of reaching a transition temperature during a field cooling process is disclosed. In one embodiment, the kit comprises at least one pumping or mixing element including a levitation magnet and at least one charging magnet substantially corresponding in size, shape, and magnetic field distribution to the levitation magnet. The presence of the charging magnet adjacent the superconducting element during the field cooling process enables stable levitation of the pumping or mixing element, including when in a fluid-filled vessel positioned adjacent the superconducting element.