A stator-core fixing structure fixes a stator core to a housing. The stator-core fixing structure includes a plurality of outer peripheral surface portions, and a plurality of inner peripheral surface portions. The plurality of outer peripheral surface portions are included in an outer peripheral surface of the stator core and have outer diameters different from each other. The plurality of inner peripheral surface portions are included in an inner peripheral surface of the housing and have inner diameters different from each other. Each of the plurality of outer peripheral surface portions corresponds to a corresponding one of the plurality of inner peripheral surface portions. Each of the plurality of outer peripheral surface portions contacts the corresponding one of the plurality of inner peripheral surface portions.

A landing bearing assembly for a rotary machine having a stator assembly, a rotor assembly and a magnetic bearing. The landing bearing assembly having a stator landing portion integral with the stator assembly and a rotor landing portion integral with the rotor assembly. A first coating, which is an anti-wear and/or an anti-friction coating, is dispensed on at least one of the stator landing portion and the rotor landing portion. The invention also concerns such a rotary machine.

The present disclosure discloses a rotary joint electromagnetic locking device and a rotary joint, the rotary joint electromagnetic locking device comprising a first electromagnetic sucker, a sliding plate, a rotary plate, a connecting shaft connecting the first electromagnetic sucker and the sliding plate, and a second electromagnetic sucker, different from the prior art. When the first electromagnetic sucker and the second electromagnetic sucker have no adsorption force, the sliding plate and the rotary plate can be locked to each other; when the second electromagnetic sucker has an adsorption force, the rotary plate or the first electromagnetic sucker is adsorbed by the second electromagnetic sucker, making the sliding plate and the rotary plate to be further locked; when the first electromagnetic sucker has an adsorption force, the sliding plate can be adsorbed to the first contact surface of the first electromagnetic sucker, making the sliding plate released from the rotary plate.

A turbine and a turbine-generator device for use in electricity generation. The turbine has a universal design and so may be relatively easily modified for use in connection with generators having a rated power output in the range of 50 KW to 5 MW. Such modifications are achieved, in part, through use of a modular turbine cartridge built up of discrete rotor and stator plates sized for the desired application with turbine brush seals chosen to accommodate radial rotor movements from the supported generator. The cartridge may be installed and removed from the turbine relatively easily for maintenance or rebuilding. The rotor housing is designed to be relatively easily machined to dimensions that meet desired operating parameters.

There is provided an inductive sensing circuit, comprising a signal generator, configured to generate a drive signal; one or more sensing arrangements, each of the one or more sensing arrangements comprising: two sets of one or more inductive sensing elements, configured in a half bridge arrangement, the two sets of one or more inductive sensing elements driven by the drive signal; a correction signal circuit, configured to generate a correction signal, wherein the correction signal is an adjustably scaled version of the drive signal; and a summing circuit, configured to sum an output signal of the two sets of one or more inductive sensing elements with the correction signal; and a demodulation circuit, configured to demodulate an output of the summing circuit of each of the one or more sensing arrangements.

The present invention provides a protective structure for a magnetic bearing and a magnetic bearing assembly. The protective structure for a magnetic bearing comprises: a first radial bearing protective component, sleeved on a shaft and in a position corresponding to a magnetic bearing, a first gap being radially formed between the first radial bearing protective component and the shaft; and a second radial bearing protective component, sleeved on the shaft and in a position corresponding to the magnetic bearing, a second gap being radially formed between the second radial bearing protective component and the shaft; the height of a working gap being greater than the height of the second gap, the height of the second gap being greater than the height of the first gap. The protective structure for the magnetic bearing and the magnetic bearing assembly effectively solve the problem of lower security between a magnetic bearing and a shaft, since a protective structure for the magnetic bearing is prone to failure in the prior art.

An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.

A turbine and a turbine-generator device for use in electricity generation. The turbine has a universal design and so may be relatively easily modified for use in connection with generators having a rated power output in the range of 50 KW to 5 MW. Such modifications are achieved, in part, through use of a modular turbine cartridge built up of discrete rotor and stator plates sized for the desired application with turbine brush seals chosen to accommodate radial rotor movements from the supported generator. The cartridge may be installed and removed from the turbine relatively easily for maintenance or rebuilding. The rotor housing is designed to be relatively easily machined to dimensions that meet desired operating parameters.

A bearing system and associated method of operation are provided to support a spinning rotor having a pot and a shaft of an open-end spinning device with two radial bearings and at least one axial support bearing, wherein at least one of the radial bearings is an active magnetic bearing. The axial support bearing is configured such that a magnetic bearing acts in opposition to one or both of an aerostatic air bearing or a mechanical starting element.

A pump device (10) includes a housing (30) including a blood inflow port (38) through which blood flows in, and having a fixed-side repulsive magnet (44) disposed in an annular manner; and an impeller (14) that is rotatably housed inside the housing (30), and having a movable-side repulsive magnet (56) disposed in an annular manner. The fixed-side repulsive magnet (44) is disposed in a position offset toward the blood inflow port (38) side relative to the movable-side repulsive magnet (56). In the fixed-side repulsive magnet (44) and the movable-side repulsive magnet (56), a fixed-side repulsive surface (44a) and a movable-side repulsive surface (56a) adjacent to each other have the same polarity.