Abstract: A bearing housing is provided with a cooling channel in at least part of the circumference around the bearing. The cooling channel is provided with a flow guide member at least in part of its flow section to construct a tortuous passage whose flow distance is longer than the corresponding circumferential length of the flow section. On the basis of the above-mentioned bearing housing, the present invention also provides a bearing housing unit, a continuous casting roll line and a continuous casting machine that use the bearing housing. The above-mentioned bearing housing adopts an optimized cooling channel design, which can obtain a better cooling effect without changing other structures of the bearing housing. Therefore, it is particularly suitable for upgrading existing equipment and has a huge cost advantage and a wide range of application prospects.

Abstract: Provided is a bearing for a wind turbine, including a first and a second ring arranged radially to each other with one ring rotating relative to the other ring around an axis of rotation. The first ring has a cylindrical ring section and a collar extending radially from the ring section. The collar has an axial support area supporting axial bearing elements, wherein several pretension elements creating compressive stress are fixed to the first ring in the section where the collar extends from the ring section.

Abstract: A turbofan engine according to an example of the present disclosure includes, among other things, a fan, and an outer housing surrounding the fan to define a bypass flow path, a compressor, a turbine section including a fan drive turbine and a second turbine, an epicyclic gear system with a gear reduction, the fan drive turbine driving the fan through the gear system, and the gear system straddle-mounted by first and second bearings. The fan drive turbine has a first exit area at a first exit point and is rotatable at a first speed. The second turbine has a second exit area at a second exit point and is rotatable at a second speed. A first performance quantity is defined as the product of the first speed squared and the first area. A second performance quantity is defined as the product of the second speed squared and the second area.

Abstract: Provided is an electric water pump in which a portion of a fluid discharged from the vicinity of an outer peripheral edge of an impeller flows between the impeller and a lower casing, flows between a rotor and the lower casing, flows between a shaft and the rotor along a channel formed inside the rotor, and then flows to an inlet side of the impeller such that the fluid circulates outside and inside the rotor, and thus, foreign matters contained in the fluid do not accumulate in an accommodation space between the rotor and the lower casing, and thus, efficiency and durability of a motor can be improved.

Abstract: A heat sink that can be positioned around a rotating shaft includes a cylindrical body with a first end and a second end, a bore running through the body with a first opening at the first end of the body and a second opening at the second end of the body, fins extending radially outward from the body and running from the first end to the second end of the body, and channels defined between the fins and running from the first end to the second end of the body.

Abstract: An object is to provide a machine-tool spindle cooling method and a machine tool capable of suppressing thermal deformation of a spindle while achieving energy saving. To achieve it, a machine-tool spindle cooling method is provided in which bearings (13) and a spindle rotation motor (14) that generate heat with rotation of a spindle (12) are cooled by causing a spindle cooling device (18) to supply and circulate cooled cooling oil inside a housing (11) rotatably supporting the spindle (12), the method comprising deactuating the spindle cooling device (18) to thereby stop supplying the cooling oil in a case where the number of revolutions of the spindle (12) is less than or equal to a predetermined number of revolutions and the temperatures of the bearings (13) and the spindle rotation motor (14) detected by temperature sensors (15, 16) are less than or equal to a predetermined temperature.

Abstract: A centrifugal compressor assembly and method of operation provides a motor that drives a first stage compressor. The motor comprises a rotor. The motor uses radial aerostatic bearings to stabilize rotation and axial displacement of the rotor. The motor also uses a thrust aerostatic bearing to balance an axial force of the rotor. The radial aerostatic bearings and the thrust aerostatic bearing use a low-viscous vapor-liquid two-phase fluid as a lubricating medium. The radial aerostatic bearings supports the rotor. The thrust aerostatic bearing uses porous aerostatic bearings that use a low-viscous vapor-liquid two-phase fluid, so as to reduce radial and axial oscillation of the rotor. This enables clearance between a blade tip of an impeller and a volute. This causes a seal clearance to be reduced by a half; thereby increasing efficiency of the centrifugal compressor by at least 10 percent.

Abstract: Invention provides gear pump bearing block and method of manufacturing gear pump bearing block. Bearing block includes a bush formed of antifriction alloy, bush having cylindrical portion providing bore adapted to receive bearing shaft of gear of pump, and further having flange portion extending radially outwardly at end of cylindrical portion to provide thrust face adapted to slidingly engage with side surface of gear. Bearing block also has backing layer covering radially outer surface of cylindrical portion and rear face of flange portion, backing layer being formed of less dense alloy compared to antifriction alloy. Furthermore, there is an annular gallery embedded in flange portion such that gallery is spaced from surface of bore and from thrust face, gallery surrounding bore, with inlet to and outlet from annular gallery such that, in use, fluid flows from inlet, through annular gallery to provide cooling of thrust face, and then to outlet.

Abstract: A method of manufacturing an assembly including a first structure which is arranged to be rigidly connected to a housing of a turbojet engine; a second annular structure surrounding the first structure; and a hyperstatic trellis of connecting rods which maintains the first structure relative to the second structure, is provided. The method includes mounting the connecting rods of the hyperstatic trellis between the structures; and pre-stressing at least one of the connecting rods to a pre-determined level, which is carried out before the mounting thereof between the structures.

Abstract: A support, for example for a turboshaft engine, or for at least one bearing for a hot section of a turboshaft engine. The support includes at least a central hub incorporating an outer bearing seat for directly receiving the bearing, an annular casing segment around the central hub, and a plurality of radial arms connecting the central hub to the casing segment. The radial arms are inclined in an axial direction and in a tangential direction and are integrated as a single piece with the central hub and with the annular casing segment.

Abstract: A system and method for a constructible scoop that overcomes the disadvantages of conventional preformed scoops that are shipped in association with a scoopable product. A constructible scoop may be protected and provided outside of the product-containing-volume where it is easily located and sealed to be sanitary prior to first use.

Abstract: An elongation ring adapted for use in a self-ventilated traction motor and for fixed placement between the non-driving end of the motor housing and a motor end shield. The ring has radial air outlet openings placed along its circumference and is adapted to enclose a fan wheel fixed on a motor driving shaft. A traction motor having such an elongation ring is also contemplated. The elongation ring provides a possibility to easily adapt a motor housing to different motor types such as a self-ventilated motor with the ring, or one with forced ventilation without the ring.

Abstract: A rolling bearing arrangement which has at least one rolling bearing outer ring of a rolling bearing, an intermediate element, and a housing part. The rolling bearing can be inserted into the housing part such that the intermediate element lies between the rolling bearing outer ring and the housing part. A first contact zone is formed between the rolling bearing outer ring and the intermediate element, and a second contact zone is formed between the intermediate element and the housing part. Formed on the first contact zone is a cooling system that has at least one cooling recess through which a cooling agent can flow. Formed on the second contact zone is a damping system that has at least one damping recess via which a damping cavity in the second contact zone can be filled with a damping medium.

Abstract: An arrangement to control the clearance of a sliding bearing is disclosed. A sliding bearing arrangement, of a direct driven wind turbine, comprises a bearing. The bearing comprises a first bearing shell and a second bearing shell, whereby the first bearing shell and the second bearing shell are arranged rotatable in respect to each other. A certain predetermined clearance is present between the first bearing shell and the second bearing shell, while the bearing is in rotation. A first circuit comprises a first fluid, while the first circuit is in thermal contact with the first bearing shell. A second circuit comprises a second fluid, while the second circuit is in thermal contact with the second bearing shell. The first circuit and the second circuit are coupled in a way that a difference in the temperature between the first bearing shell and the second bearing shell is compensated via the first and the second fluid, thus the clearance is kept within a predetermined range.

Abstract: An arrangement to control the clearance of a sliding bearing is disclosed. A sliding bearing arrangement, of a direct driven wind turbine, comprises a bearing. The bearing comprises a first bearing shell and a second bearing shell, whereby the first bearing shell and the second bearing shell are arranged rotatable in respect to each other. A certain predetermined clearance is present between the first bearing shell and the second bearing shell, while the bearing is in rotation. A first circuit comprises a first fluid, while the first circuit is in thermal contact with the first bearing shell. A second circuit comprises a second fluid, while the second circuit is in thermal contact with the second bearing shell. The first circuit and the second circuit are coupled in a way that a difference in the temperature between the first bearing shell and the second bearing shell is compensated via the first and the second fluid, thus the clearance is kept within a predetermined range.

Abstract: A fluid flow machine includes a housing with a connecting piece for a working fluid on an intake side, and a pressure side. At least one impeller is mounted on a shaft, which is held in the housing by radial and axial bearings, and a cooling arrangement is provided for at least one bearing. A revolving part of the axial bearing is designed as a cooling fluid transportation device, wherein a suction connection leads to the intake side of the impeller.

Abstract: A compressor bearing cooling inlet plate has a mount plate, and a boss extending forwardly from the mount plate. The boss includes a plurality of grooves extending axially into the boss to define flow passages for cooling air from an outer peripheral surface of the cooling inlet plate to an inner bore. The grooves extend for a width between side walls, at angles that are not directly radially inwardly toward a center axis of the cooling plate. There is a plurality of widths across the plurality of grooves. A compressor bearing assembly, a motor driven compressor for use in a nitrogen generation system, and a method of installing a compressor bearing cooling inlet plate are all also disclosed and claimed.

Abstract: A method of processing a signal is disclosed, which includes receiving a downmix signal, object information and rendering information; obtaining downmix gain flag information indicating whether a downmix gain is included in the object information; and generating downmix processing information using the object information and the rendering information based on the downmix gain flag information, wherein the object information includes modified object level information or object level information, wherein the modified object level information is determined using a level of a modified object generated by applying the downmix gain to an object, and wherein the object level information is determined using a level of the object. Accordingly, in an apparatus for processing a signal and method thereof according to the present invention, the signal is decoded using modified object level information based on downmix gain flag information.

Abstract: A compressor rotor compresses air and delivers the compressed air to a downstream inlet and across a turbine rotor. A shaft rotates with the turbine rotor and the compressor rotor. The shaft is hollow with an inner bore and an outer periphery. At least one journal bearing supports a portion of the shaft, and has an inner bore spaced from the outer periphery of the shaft. A cooling air path is provided between the shaft outer periphery and the bearing inner periphery, and along a length of the bearing to at least one connection hole. The connection hole provides cooling air from an outer periphery of the shaft to the inner bore of the shaft. In a separate feature, a shaft for use in an air supply machine includes a hollow interior, with such a connection hole.

Abstract: A bearing assembly includes a tubular outer housing and a tubular inner mandrel. The outer housing has an exterior surface and an interior surface defining an interior bore. The inner mandrel has an exterior surface and an interior surface defining an interior mud flow channel. The inner mandrel is journaled for rotation within the interior bore of the outer housing. Pairs of diamond bearings having opposed curved bearing surfaces are disposed between the outer housing and the inner mandrel. One of each pair of opposed curved bearing surfaces being convex and being secured to one of the inner mandrel or outer housing and another of each pair of opposed curved bearing surfaces being concave and secured to another of the inner mandrel or outer housing.

Abstract: A rotating machine is disclosed including a rotor, a stator, a radial bearing arranged for supporting radial forces between the rotor and the stator by mechanical contacts and a bearing housing. The bearing housing is provided in the stator or the rotor in direct mechanical contact with the radial bearing and the rotating machine further comprises a thermal energy exchanger, arranged in the bearing housing, and a thermal controller. The thermal energy exchanger is capable of providing both heat and cold, and the thermal controller is arranged to control the thermal energy exchange during operation of the rotating machine. The rotating machine is typically a large machine, such as a refiner. A method for vibration control of a rotating machine is also disclosed comprising measuring properties related to vibrational properties.

Abstract: A method for cooling a roller device, which has a right bearing housing, a left bearing housing, and a roller, which is rotatably supported by journals in the bearing housings, especially of strand guide rolls, roller table rollers, pinch rolls, support rolls, or driving rolls in continuous casting plants, in which a cooling medium cools the bearings mounted in the bearing housings and passes through an axial bore in the roller. The cooling medium enters the bearing housing of the roller device on one side, passes around the bearing mounted in this bearing housing, then flows through the axial bore in the roller to the other side, passes around the bearing mounted in the other bearing housing, and is then discharged from the roller device.

Abstract: The present invention relates to a bearing race, which exhibits an inside facing a rotational bearing-race axis and an outside facing away from the rotational bearing-race axis, in which at least one cooling-medium channel is disposed at the outside of the bearing race, which exhibits a hydraulic diameter of at least 1 millimeter and a length of at least two spiral turns.

Abstract: A system for cooling a bearing of a shaft of a motor comprises an oil sump adapted to collect oil that contacts a bearing enclosed within the sump; and a heat exchanger physically separated from the sump and the bearing, the heat exchanger adapted to be in fluid communication with the sump and the bearing.

Abstract: A bearing cooling system comprises a bearing assembly, a heat exchanger, a coolant flow circuit apparatus and a lubricant flow circuit apparatus. The bearing assembly is configured for being removably seated within a well drilling head housing and for having a stripper rubber assembly attached thereto. The bearing assembly includes bearings and a lubricant flow path configured for allowing lubricant to be circulated through the bearings. The heat exchanger has a lubricant core portion and a coolant core portion, which are jointly configured for allowing heat transfer between respective fluids of the core portions. The coolant flow circuit apparatus is coupled to the coolant core portion and is configured for circulating coolant through the coolant core portion. The lubricant flow circuit apparatus is coupled to the lubricant core portion and lubricant flow path, and is configured for circulating lubricant through the coolant core portion and the lubricant flow path.

Abstract: A roller device, which includes a right bearing housing, a left bearing housing and a roller, which is rotatably supported by journals in the bearing housings in continuous casting plants. A cooling medium is passed through an axial bore in the roller, and bores, which form a closed cavity, are arranged around the bearings mounted in each of the bearing housings. A cooling medium inlet is provided in a first of the bearing housings, and a discharge bore for the cooling medium, which is arranged on the end face of a second of the bearing housings, is located next to the bearing cover so that the cooling medium flows into the inlet in the first bearing housing, through the axial bore in the roller and out the discharge bore in the second bearing housing.

Abstract: A method of cooling shaft bearings of a high speed rotating machine is provided. In various embodiments, the method includes utilizing a primary cooling circuit of the machine that is structured and operable to cool a drive package of the machine to cool condenser ends of each of a plurality of heat pipes absent an auxiliary cooling system structured for cooling the heat pipe condenser ends. Each heat pipe including a respective evaporator end disposed proximate the shaft bearings to absorb heat generated by the bearings during operation of the machine.

Abstract: A bearing structure includes a housing having a bore that penetrates the housing, a rotation shaft inserted into the bore, an annular first metal bearing and an annular second metal bearing, which are provided apart from each other in an axial direction in the bore and rotatably support the rotation shaft, and a ventilation passage provided in the housing. The ventilation passage is formed on the housing-side contact surfaces which are formed on an inner surface of the housing, and bypasses at least one of the first metal bearing and the second metal bearing. Through ventilation passage, a closed area sandwiched between the both first metal bearing and second metal bearing inside the bore communicates with an outside area.

Abstract: A diamond bearing assembly comprises a support ring having at least one diamond bearing segment attached thereto. A plurality of bearing pads are disposed on the diamond bearing segment. The plurality of bearing pads have a plurality of flow micro-channels between the bearing pads. A flow channel is disposed in the support ring proximate the bearing segment, wherein the flow channel has a fluid flowing therethrough for cooling the bearing segment. In another aspect, a method of cooling a diamond bearing comprises disposing a plurality of bearing pads on a diamond bearing segment. The diamond bearing segment are attached to a support ring. A fluid flows through a substantially radial channel in the support ring to cool the diamond bearing segment.

Abstract: A shaft 17 defines a front end portion 17a having a larger diameter and an opposite tail end portion 17b having a smaller diameter, the shaft 17 being rotatably supported by the housing 13 through a radial bearing 19 and a pair of angular ball bearings 21 at the front side large diameter portion 17a and the small diameter portion 17b, respectively.

Abstract: The bearing cooling device causes cooling media to flow into the interior of a journal bearing 8 for supporting a shaft part 7 by lubrication of high viscous fluid and the interior of the shaft part 7 to cool the shaft part 7 and the bearing 8. At this time, cooling medium temperature of the bearing 8 is set to be higher than cooling medium temperature of the shaft part 7. It is constituted so that the cooling medium passes the cooling medium passage and thereafter passes the cooling medium passage internally of the bearing. A heated medium supply device for supplying a heated medium to each cooling medium passage may be provided. The bearing cooling device is used suitably for a gear pump.

Abstract: To provide a gear pump for carrying high viscous liquid, which keeps a bearing in a free state and enhances reliability relative to a leakage of cooling medium and a leakage of molten resins. The gear pump in which a pair of gear rotors 2 are supported on a body 1 of the gear pump through a bearing 6, a cover for preventing the bearing 6 from being slipped out is secured to the body 1, and a temperature adjusting medium passage 20 is formed in the bearing 6, wherein an inlet pipe 28 and an outlet pipe 29 to the temperature adjusting medium passage 20 are connected to the axial outer end of the bearing 6, an intermediate plate 10 is interposed between the axial outer end of the bearing 6 and the cover 11, the intermediate plate 10 being provided with an insert hole 31 for the inlet pipe 28 and the outlet pipe 29, the cover 11 being provided with a guide portion 32 having the inlet pipe 28 and the outlet pipe 29 loosely fitted therein to guide them to outside.

Abstract: A bearing assembly is provided which includes an annular support member and a plurality of thrust bearing elements coupled to and distributed about the face of the support member. The thrust bearing elements are adapted to receive and support an axial load of a rotating member such as a thrust collar on a shaft. An annular distribution ring is mounted to the face of the support member for restricting motion of the thrust bearing elements. A distribution passage is formed between the distribution ring and the support member in such a manner that the distribution passage carries fluid to and across each of the thrust bearing elements.

Abstract: Described herein is an isothermal journal bearing that incorporates heat pipes for temperature reduction and uniformity. The heat pipes can be fabricated by turning and are arranged within the bearing wall circumferentially. Due to the high thermal conductance of the heat pipe, frictional heat produced at the contact and during the rubbing process can be dissipated promptly through the entire bearing wall, resulting in a lower temperature in the pressurized region and a relatively uniform temperature along the circumference of the bearing. The temperature reduction and uniformity would significantly reduce the bearing failure tendency due to heat accumulation and bearing thermal distortion.

Abstract: In order to cool the slide bearing area for the slidable bearing of a gear pump shaft, a slide bearing bush with a slide bearing area and, in the case of the guiding-through of a shaft, a sealing area extends in one piece integrally to the outside, and a cooling-medium guiding system provided in the bush is connected from the outside. This eliminates all sealing problems for the cooling medium feeding to the slide bearing area.

Abstract: A housing segment has a fluid inlet and a fluid outlet and a cooling passage therebetween. The cooling passage has a uniform cross-sectional area approximately equal to the cross-sectional area of the fluid inlet and the fluid outlet and may be conveniently formed in a serpentine configuration with loops extending axially. The bearing housing may be mounted over a rolling element bearing to provide a fluid-cooled housed bearing.

Abstract: A vertical shaft type pump including a bearing device in which water in the pump is utilized as lubricating water without supplying water to the bearing from the outside of the pump, thereby repeatedly conducting no-load operation in the air (in such a state that water is not pumped) stably for a long period of time. In the pump, a water storage tank upwardly opened is fixed to a rotary shaft, and the lubricating water (the water in the pump) is retained within the water storage tank so that the bearing is operated while being always soaked in the lubricating water. Also, foreign substances in the water storage tank are mixed with the water without deposition, and the water containing the foreign substances is replaced by the newly pumped water.

Abstract: A centrifugal pump comprising a housing having an open end covered by a rear cover and a front cover, overlapping each other. A fixed central shaft is disposed along a central rotation axis of the centrifugal pump with a driven magnet member disposed therearound to rotate with respect thereto. The driven member is enclosed by an enclosure which is an extension of an impeller disposed within an interior space defined between the rear and front covers. The driven member is driven by a driving magnet member in fluid isolation from the driven member. The driving member is mechanically connected to a motor and actuated thereby.

Abstract: A bearing cooling system for a water turbine having a rotatable shaft connected at one end to a movable blade portion and supported by a journal bearing and by a thrust bearing having a collar, comprises a heat pipe including a first container surrounding and spaced from the rotatable shaft and extending axially from a predetermined engaging position adjacent the one end of the shaft to the journal and thrust bearings. The thrust bearing engages the outer surface of the first container, and the shaft and thrust bearing and inner surface of the container define walls of a sealed first chamber surrounding a portion of the rotatable shaft and communicating with the journal and thrust bearings. The system is adapted to include a fluid contained in the first chamber for absorbing heat generated by the journal and thrust bearings. A second container is spaced from and surrounds a portion of the first container adjacent the one end of the shaft.

Abstract: A mounting device for a roll, particularly a roll for a continuous casting apparatus, comprises a support and a bearing for the roll affixed to the support, the support and the bearing defining channels for the circulation of a cooling fluid therethrough, the support and bearing channels being in communication with each other across a plane of support of the bearing on the support through respective ends of the channels.

Abstract: A hermetic dynamic machine has a main part supporting a rotor shaft and having a main part cooler, an external fan provided on one end of the rotor shaft, an end cover which covers the end of the main part adjacent to the external fan and having a cooling air inlet formed therein, a bearing provided on the portion of the rotor shaft adjacent to the external fan. The dynamic machine further has a cooling air system which is constituted by a first cooling air passage for guiding the flow of the cooling air from the air inlet to the external fan, a second cooling air passage through which air for cooling the bearing flows and a third cooling air passage through which cooling air from the external fan is introduced into the main part cooler. A first connecting pipe provides a communication between the first and second cooling air passages, while a second connecting pipe provides communication between the second and third cooling air passages.

Abstract: A tilt pad bearing assembly for use in supporting a rotating shaft is disclosed. The bearing assembly includes lubricant means for effectively cooling separate individual bearing pads, and separate cooling channels for selectively cooling a portion of the bearing pad. The bearing pads each have a specific end treatment to act in combination to provide an anti-spragging effect. Additionally by selectively cooling a portion of the bearing pad, the bearing pad may have separate configurations for low speed and high speed applications such that boundary lubrication is achieved under low speed conditions and dynamic lubrication is achieved under high speed conditions.

Abstract: In a support for a machine tool spindle (1) adapted for use with a cooling device there are provided feed and discharge channels (12, 13) for a fluidic cooling system in the spindle (1). These channels are connected to cooling grooves (14), which at least in the region of the inner bearing rings (2a) are arranged on the spindle head (1a), are worked into the spindle outer surface (1b) extending in a peripheral direction or helically and are open toward the inner bearing rings (2a).

Abstract: A cooling device for a bearing, including a bearing support for supporting a bearing in position and having a hollow annular chamber therewithin and extending along substantially the entire dimension of the bearing support parallel to the bearing, a refrigerant type fluid substantially filling the hollow chamber and having a vaporization temperature in the range of the temperature to which the bearing is heated during use, a heat radiator spaced from the bearing support, and a vapor pipe extending from the top of the hollow chamber to the heat radiator and a liquid pipe extending from the heat radiator to the bottom of the hollow chamber.