11results about "Hydrostatic bearings" patented technology

The invention relates to a hydrodynamic or hydrostatic sliding bearing (1) for the rotatable support of a shaft (3), in particular in a wind turbine (2), comprising at least one first sliding element (4) with a first sliding surface (5) which is arranged on an adapter structure (9), and a connecting structure (6) which serves to fasten the adapter structure (9), wherein the adapter structure (9) is arranged to be radially and / or axially displaceable, and wherein a first ramp section (7) is formed on the adapter structure (9) and a corresponding second ramp section (8) is formed on the connecting structure (6) such that an axial displacement of the adapter structure (9) relative to the connecting structure (6) causes a radial displacement of the sliding element (4) and / or vice versa, so that the bearing clearance of the sliding element (4) relative to the shaft (3) is adjustable.The axial offset is determined by means of at least one intermediate piece (10) which is inserted into a space (11) caused by the axial offset and thus produces a reproducible radial offset of the at least one sliding element (4).

A foil throttling self-adaptive static pressure gas floating thrust bearing, which comprises a spring seat (1), a bearing base (2), a foil self-adaptive assembly (3) and a flat foil (4), wherein the foil self-adaptive assembly (3) comprises a spring (31), a piston (32) and a gas pipe quick connector (33), characterized in that the bearing base (2) is a hollow cylinder, the spring seat (1) is installed on the upper surface of the bearing base (2), the flat foil (4) is installed on the lower surface of the bearing base (2), and the foil self-adaptive assembly (3) is located inside the bearing base (2), wherein the piston (32) is installed on the upper surface of the flat foil (4), the spring (31) is located on the upper surface of the piston (32), and the gas pipe quick connector (33) is installed on the upper surface of the piston (32). The foil throttling static pressure gas floating thrust bearing has superior micro-vibration suppression performance and a longer service life.

The present invention relates to a wind power main-shaft sliding bearing with bidirectional stresses and a wind power generation system. The wind power main-shaft sliding bearing with the bidirectional stresses includes an outer ring, an inner ring and a tile block. The outer ring has an isosceles trapezoidal cross-section at the sliding place of an inner circle thereof. A trapezoidal groove matching the shape of the outer ring is formed at the corresponding position of the outer circle face of the inner ring. Chutes are formed at the two inner sloping faces of the trapezoidal groove, respectively. The chutes are disposed symmetrically at two sides. The tile block is disposed in a cavity formed between the chute and the inner circle face of the outer ring. The face of the tile block near the inner ring is a spherical face. The tile block divides an oil cavity into a first oil cavity and a second oil cavity. The first oil cavity is near the outer ring. The second oil cavity is near the inner ring. The first oil cavity is injected with a lubricant. The second oil cavity is injected with a high-pressure oil. Even when the sliding bearing is stressed with a large load so that the inner ring of the bearing is deformed, the tile block is capable of automatically adjusting a tilting angle, thereby avoiding the tilting of the outer ring of the bearing due to the loss of an operating pressure, allowing rotation to keep stable and being capable of allowing air gaps between a wind driven generator stator and a wind driven generator rotor to always maintain uniformity.

The present application relates to air bearing technical field, specifically for wide speed big load supercritical carbon dioxide dynamic pressure tilting pad bearing system, including with supercritical carbon dioxide flow passage's tilting pad bearing, supercritical carbon dioxide gas supply control loop and temperature, pressure acquisition circuit;With supercritical carbon dioxide flow passage's tilting pad bearing includes bearing shell, damper and tile, the tile, damper and bearing shell are sequentially arranged from inside to outside, and tile and damper are respectively fixed on bearing shell.The present application increases damper between bearing tile and bearing shell, effectively improves the damping characteristic and stability of bearing, dynamic pressure mixed lubrication mode improves the lubricating performance under S-CO2 medium, overcomes the defect of static pressure bearing under high speed, significantly improves the comprehensive service performance of bearing, so that it can maintain good lubricating performance and carrying capacity in wide speed range.

The present invention relates to a wind power main-shaft sliding bearing with bidirectional stresses and a wind power generation system. The wind power main-shaft sliding bearing with the bidirectional stresses includes an outer ring, an inner ring and a tile block. The outer ring has an isosceles trapezoidal cross-section at the sliding place of an inner circle thereof. A trapezoidal groove matching the shape of the outer ring is formed at the corresponding position of the outer circle face of the inner ring. Chutes are formed at the two inner sloping faces of the trapezoidal groove, respectively. The chutes are disposed symmetrically at two sides. The tile block is disposed in a cavity formed between the chute and the inner circle face of the outer ring. The face of the tile block near the inner ring is a spherical face. The tile block divides an oil cavity into a first oil cavity and a second oil cavity. The first oil cavity is near the outer ring. The second oil cavity is near the inner ring. The first oil cavity is injected with a lubricant. The second oil cavity is injected with a high-pressure oil. Even when the sliding bearing is stressed with a large load so that the inner ring of the bearing is deformed, the tile block is capable of automatically adjusting a tilting angle, thereby avoiding the tilting of the outer ring of the bearing due to the loss of an operating pressure, allowing rotation to keep stable and being capable of allowing air gaps between a wind driven generator stator and a wind driven generator rotor to always maintain uniformity.

The lubricant-supported electric motor includes a stator having an outer raceway and a rotor extending along an axis and rotatably disposed within the stator. The rotor has an inner raceway spaced apart from the outer raceway to define a gap between them. Lubricant is disposed in the gap to support the rotor within the stator. At least one of the outer or inner raceways may be radially movable toward or away from the other to adjust the gap and optimize the operation of the lubricant-supported electric motor.

The invention discloses a gas film pressure active compensation type gas static pressure bearing and a working method thereof. The gas film pressure active compensation type gas static pressure bearing comprises a bearing body, and two circles of throttling holes are evenly distributed in the circumferential direction of the working face of the bearing body; a plurality of grooves are evenly formed in the outer side wall of the bearing body in the circumferential direction, magnetic control flow valves are arranged in the grooves, when the strip-shaped magnets rotate to the corresponding positions, the magnetic control flow valves are opened under the action of repulsive force, the compensation throttling holes are communicated with flow valve inlet flow channels, pressure is supplemented through the corresponding compensation throttling holes, and the flow valve inlet flow channels are communicated with the magnetic control flow valves. Therefore, active compensation of the pressure is realized; according to the invention, active compensation for the pressure of the gas film is realized when the bearing bears a large load or the load fluctuation is relatively large, the thickness of the gas film is always controlled within an allowable range, and the rigidity, the bearing capacity and the stability of the bearing are improved.

The invention discloses a static pressure gas bearing with self-sensing and self-driving functions and an implementation method of the static pressure gas bearing, and provides an innovative technical scheme for machining an adjustable pressure equalizing cavity on the working surface of a bearing disc aiming at the technical problems that a traditional small-hole throttling bearing is easy to cause air hammer vibration and a traditional annular surface throttling bearing is relatively weak in bearing capacity. According to the bearing, the annular pressure equalizing cavity is machined in the working surface of the bearing disc, the equivalent effect of small hole throttling is achieved through the structural form of annular face throttling, the occurrence probability of air hammer vibration is remarkably reduced, and the bearing capacity of the bearing is effectively improved. Besides, a microprocessor and a micro sensing driving mechanism (such as an MEMS element or a PZT and other special materials) are integrated in the annular pressure equalizing cavity, and an intelligent control algorithm is combined, so that the bearing has a self-sensing and self-driving function, parameters such as acceleration, temperature and gas film pressure can be sensed in real time, and the performance of the bearing can be regulated and controlled in real time according to an external excitation signal. The working stability, the bearing capacity and the intelligent regulation and control level of the bearing are remarkably improved, and the bearing is suitable for various complex working conditions.

An electrical machine comprises a stator (1) with a stator body (25) supporting an electrical stator (3) and a rotor (5), the rotor (5) being supported by means of a bearing comprising a radial bearing section (17) forming a radial gas bearing and an axial bearing section (12) forming an axial gas bearing, the stator side parts of these bearing sections comprising an axial bearing assembly (11) and a bushing (18). The bushing (18) is aligned relative to the stator body (25) by the bushing (18) being aligned relative to a reference body (143) and by the reference body (143) being aligned relative to the stator body (25). The rotor (5) is removable from the stator body (25) while leaving the reference body (143) in place.

The application provides a gas turbine eccentricity compensation air floating bearing, which comprises a shell, an outer supporting ring and a plurality of air floating blocks, the shell is wrapped on the outer circumferential surface of the outer supporting ring, an air inlet is arranged on the shell, and an equalizing ring cavity in communication with the air inlet is formed between the outer supporting ring and the shell; the plurality of air floating blocks are fixedly arranged on the inner circumferential surface of the outer supporting ring in a circumferential array, a gas passage hole penetrating through the outer supporting ring in a radial direction is arranged on the outer supporting ring at a position corresponding to each air floating block, a gas supply hole penetrating through the thickness direction of the air floating block in a radial direction is arranged on the air floating block at a position corresponding to the gas passage hole, and the gas passage hole is in communication with the equalizing ring cavity and the gas supply hole; the air floating bearing is improved on the basis of a conventional air floating bearing, the gas film thickness is changed through gas film pressure control, and the purpose of compensating the eccentricity of the shaft in the air floating bearing is expected to be achieved.

A spherical fluid-film bearing for supporting a rotating shaft includes a first bearing element and a second bearing element positioned along the rotating shaft in opposite orientations. Each bearing element also includes a rotor having bearing surface formed as a spherical segment. Additional stabilizing features may be included in the spherical fluid-film bearing, including mechanical springs, hydraulic pistons and a high pressure lubrication system.