Abstract: A bearing arrangement for a turbine rotor of a turbine is adapted to be mounted in a drill string and to be driven by the flow of drilling fluid. The bearing arrangement includes a turbine chamber surrounding the turbine rotor and having an inflow and an outflow, a stator on which the turbine rotor is rotatably mounted, and a cavity formed between the turbine rotor and the stator and accommodating at least one radial plain bearing and being separated from the turbine chamber by an axial plain bearing constructed as a bearing ring seal and by a conveyor screw which is disposed on the turbine rotor and operates to convey from the cavity to the turbine chamber.

Abstract: A method for the pressure regulation of a barrier fluid in a pumping device (10) is introduced, which includes a pump unit (11) with a shaft (12) and a pump housing (13), a drive unit (17), which is mechanically coupled to the pump unit and a shaft sealing arrangement (16.1, 16.2), which seals the pump housing (13) relative to the shaft (12). In the method, a pumping medium is pumped by means of the pumping device (10) and the barrier fluid is conveyed via a feed line (5.1, 5.2) to a common housing (18), in which the pump unit (11) and the drive unit (17) are arranged, in order to prevent a leakage of the pumping medium out of the pump housing (13). Additionally, the pressure of the supplied barrier fluid is increased when a pressure difference between the pressure of the supplied barrier fluid and a detected pressure of the pumping medium in the pump unit (11) falls below a pre-determined value.

Abstract: A rotating machine comprising such as an axial power turbine or a turbocharger has a housing with a bearing cavity and a chamber separated by a first wall. A shaft is rotatable about an axis in the bearing cavity, extends through an opening in the first wall and is mounted for rotation on a bearing assembly provided in the bearing cavity. An oil sealing arrangement including an oil diffuser device is arranged on the shaft for displacing oil away from the shaft as it rotates. This restricts the flow of oil to the opening. The oil diffuser device defines a diffuser passage between the bearing assembly and the first wall, the passage extending outwardly of the axis.

Abstract: The invention relates to a turbocharger (15) comprising a bearing housing (7) which mounts a rotor shaft (12) and has a bearing-housing oil space (13); comprising a compressor housing which is connected to the bearing housing (7) and has a compressor space (14); and comprising a sealing device (20) which is provided for sealing the bearing-housing oil space (13) relative to the compressor space (14) and which has a sealing ring (1) which is arranged in a fixed position in the bearing housing (7) and has two end faces (17, 17?) which interact with associated end faces (10) and (11) of a disc (9) and a sealing bush (16) which are fastened to the rotor shaft (12), wherein the sealing ring (1) is arranged with axial play on the rotor shaft (12) between the disc (9) and the sealing bush (16); and air-delivery devices (2, 3) oriented in opposition are arranged in the end faces (17, 17?) of the sealing ring (1).

Abstract: A first turbocharger comprises a first center housing and a first return passage. A second turbocharger comprises a second center housing and a second return passage. The first return passage joins the second return passage at a junction. The length of the second return passage from the second center housing to the junction is longer than that of the first return passage from the first center housing to the junction. A bellows-shaped vibration absorption portion is provided at the second return passage. The first return passage comprises a first upstream return passage and a first downstream return passage, and the first upstream and downstream return passages are connected to each other via the flexible hose.

Abstract: A gas turbine engine (10) comprising a first turbine (19) and a first compressor (13) mounted on a first shaft (26) and a bearing arrangement (52, 34) supporting the shaft (26), the bearing arrangement is subject to a total end load and comprises a fixed bearing (34), a load share bearing (52) and a bearing end load management system (50) that is capable of applying a variable load to the load share bearing to manage total end load between the bearings. The bearing end load management system comprises a static diaphragm (54) that defines part of a chamber (56) and that is coupled to the load share bearing whereby increased pressurization of the chamber loads the diaphragm which in turn increases the proportion of the total end load on the load share bearing.

Abstract: A bearing lubrication system for a high temperature bearing, such as in a small gas turbine engine for a UAV, in which the bearing and lubricant requires a long shelf life, where the bearing includes a solid lubricant movable within a chamber formed within a housing and located adjacent to the bearing. The solid lubricant is biased by a spring toward the bearing and abuts against a runner that rotates along with the rotor shaft during engine operation. A cooling air passage opens into a space formed between the bearing and the solid lubricant to supply cooling air through the bearing. When the engine operates, heat is transferred through the runner to the solid lubricant to melt the lubricant. Rubbing of the runner against the biased solid lubricant will also melt the lubricant. The melting lubricant is carried by the cooling air through the bearing to provide both cooling and lubrication for the bearing.

Abstract: A lubrication system for a bearing assembly includes a fan shaft with a plurality of conduits, a first bearing rotatably supporting the fan shaft, and a second bearing rotatably supporting the fan shaft where the second bearing is axially spaced from the first bearing. The plurality of conduits includes at least a first conduit aligned with the first bearing and a second conduit aligned with the second bearing. A spray bar includes a plurality of supply orifices that direct lubricating fluid to the first and second bearings via at least the first and second conduits.

Abstract: A high pressure first stage turbine and seal assembly are described. In one embodiment, a high pressure turbine section is provided. The turbine section includes at least one stage, at least one rotor and a bucket assembly. The bucket assembly includes a bucket and an attachment fixture. The stage has a high root reaction during operation. An intermediate space is between the bucket assembly and a stationary component of the turbine section. A seal is provided between the stationary member and the rotor to facilitate preventing leakage from the intermediate space toward an end of the stage. Steam balance holes are provided in the rotor or the bucket to facilitate feeding steam towards an end of the turbine stage.

Abstract: A charging device may include a turbine housing and a bearing housing. The bearing housing may have a bearing arrangement for a shaft carrying a turbine wheel and a compressor wheel. A gasket may be arranged by metal-to-metal connection between a radially orientated flat surface of the turbine housing and a radially orientated flat surface of the bearing housing. The gasket may be resilient.

Abstract: A supercharger for an internal combustion engine having an internal reservoir adapted to receive a supply of lubricating oil. An oil slinger is mounted on the impeller shaft for rotation therewith that extends into the reservoir for collecting and slinging lubricating oil onto the supercharger bearings, shafts and the drive and impeller gears. A baffle assembly is carried by the interior of the supercharger housing for controlling the volume and flow of lubricating oil onto said gears and bearings and directing oil flow therefrom back into said reservoir to prevent excessive lubrication buildup on the gears and the deleterious effects that result therefrom.

Abstract: A hydrodynamic axial bearing with a floating disk is disclosed wherein two lubricating gaps on the two sides of the floating disk are formed by supporting surfaces of different size. This makes it possible to provide identical lubricating gaps on both sides, despite different rotation speeds between the floating disk and the bearing housing, and between the floating disk and the bearing comb.

Abstract: A turbo compressor according to the present invention supports a rotational shaft fixed to an impeller by a bearing in a freely rotatable manner, and supplies the lubricant oil to a plurality of sliding portions that are slid due to the rotation of the rotational shaft. Furthermore, the turbo compressor includes a oil supply nozzle in which a first injection hole, which injects the lubricant oil toward a predetermined first fueling place among a plurality of sliding portions to be supplied with the lubricant oil, and a second injection hole, which injects the lubricant oil toward a second fueling place different from the first fueling place, are provided. According to the present invention, it is possible to provide a turbo compressor capable of reducing the labor and the costs of manufacturing and a turbo refrigerator including the same.

Abstract: A centrifugal pump includes a casing having an impeller chamber, an inlet, an outlet, and a bearing chamber. A shaft disposed within the casing has an impeller end and a motor end. The impeller is coupled to the impeller end of the shaft and is disposed within the impeller chamber. A bearing is disposed within the bearing portion. The bearing has an inboard end with an inboard-bearing surface and an outboard end with an outboard-bearing surface. The bearing and the shaft have a bearing clearance therebetween. A disc is coupled to the shaft on the impeller end which is spaced apart from the inboard-bearing surface. A seal ring is disposed between the disc and the inboard-bearing surface. The shaft, the seal ring, the disc, and the inboard-bearing surface define a thrust chamber therebetween. The thrust chamber is in fluid communication with the impeller chamber through the bearing clearance so that an axial thrust in an inboard direction is generated by the thrust chamber.

Abstract: The invention relates to a vacuum pump in which the gas bearing is coated with a hard layer, and to a process for preparing such gas bearing of a vacuum pump.

Abstract: The present invention is to provide a machine tool in which appropriate warm-up operation can be performed. Unnecessary warm-up operation before machining is not carried out and damage of bearings caused by the warm-up operation is prevented. A controlling unit stores data of a supply amount of lubricant to bearings and a rotation speed of a main spindle in a memory unit as time-series data. When rotation of the main spindle is started, the time-series data stored in the memory unit is used to calculate an amount of remaining lubricant in the bearings and determination of necessity of warm-up operation is made based upon the stored data. A rotation speed at a start-up time of the main spindle is controlled according to the determination result.

Abstract: A turbine engine utilizes an oil director to direct any leakage oil from a rear bearing compartment of the turbine engine toward a drain opening for an oil drain. The oil drain is formed in a heat shield located between the low pressure turbine and the exhaust nozzle. The oil drain directs the leakage oil to a benign area of the turbine engine.

Abstract: A water pump for a vehicle includes: a pump housing; a drive shaft; an impeller fixed on a first end portion of the drive shaft; a pulley including a first radial extension portion and a first axial extension portion; a seal ball bearing which is disposed between an inner circumference surface of the first axial extension portion and an outer circumference surface of a cylindrical portion, and which includes seal members; and a plate member disposed between an end portion of the seal ball bearing which is on an impeller side and a stepped portion, and arranged to cover an end surface of the seal ball bearing which is on the impeller side, the plate member having a thickness smaller than a thickness of the stepped portion, and including a separating portion which is separated from a portion rotating relative to the plate member.

Abstract: A seal is provided for sealing a hollow shaft, where the hollow shaft has an inner surface that may be uneven due to shot peening. The seal includes an axially extending ring section having a first end, a second end, an inner surface, and a disk section disposed substantially perpendicular to the ring section inner surface between the ring section first and second ends. The seal conforms to the shaft inner surface to stop oil leakage.

Abstract: A dynamic sealing system between two coaxial rotary shafts respectively comprising an inner shaft and an outer shaft. Connected to the inner shaft, the system comprises a sectorized annular assembly of wipers that are movable under the effect of centrifugal force, and an annular receptacle for liquid arranged in the inside surface of the outer shaft.

Abstract: A small gas turbine engine that operates at high rotational speeds and includes a rotor shaft that is supported on both ends by ball bearings. The aft end ball bearings includes an outer race mounted to the support structure in such a way that axial displacement of the outer race is allowed to prevent axial loads from damaging the ball bearing. The outer race of each bearing is supported by an O-ring to provide damping to the bearings. The O-ring is centered on the outer race, and the outer race is formed thicker than the inner race to provide for a better hoop surface. The outer race in the aft end is preloaded with a coil spring to maintain a load on the bearing during all phases of operation of the engine. The bearings are coated with a dry lubricant to eliminate the need for a liquid lubricant and its supply system.

Abstract: A method and apparatus for scavenging lubricant is disclosed herein. In the invention, a rotating structure is encircled within a sump housing and subjected to lubrication. The sump housing collects high-momentum lubricant flow and low-momentum lubricant flow. The interior of the sump housing is separated into a plurality of chambers with at least one dynamic seal. The at least one dynamic seal extends between the sump housing and the rotating structure to isolate the high-momentum lubricant flow from the low-momentum lubricant flow.

Abstract: In one embodiment, a method for controlling seal clearance in a turbine engine includes positioning a seal ring within a turbine engine, the seal ring having an inner annular surface and an outer annular surface, the inner annular surface and the outer annular surface both being circular but non-concentric, rotating the seal ring within the engine until the seal ring is placed in an aligned orientation at which a center of a circle that defines the inner annular surface coincides with a centerline of the engine, and securing the seal ring while in the aligned orientation.

Abstract: The present invention aims at providing a technique for providing a stepped structure separately to a rotating shaft in a later step of assembly for preventing oil leakage from a bearing box. To this end, the rotating machine of the present invention includes a rotating shaft having a rotating member, a bearing device including a rotating shaft insertion hole larger in diameter than the rotating shaft, an oil thrower provided between an outer circumferential portion of the rotating shaft insertion hole and the rotating shaft, and an additional ring attached to the rotating shaft between the oil thrower and the rotating shaft such as to protrude in a radial direction of the rotating shaft.

Abstract: A rotary machine includes a machine rotor, a bearing coupled to the machine rotor, a machine stator, and a sealing device disposed between the machine rotor and the machine stator. The sealing device includes a dry gas seal and first and second seals disposed between the dry gas seal and the bearing. One or both of the first and second seals includes a brush seal or more specifically a brush seal including a plurality of non-metallic fibers.

Abstract: A vacuum pump (50) comprises a casing and a rotor located in the casing, the rotor comprising a shaft (52) supported by a bearing arrangement (64, 66) for rotation relative to the casing. A lubricant reservoir (82) is provided for storing lubricant for lubricating a rolling bearing (64) of the bearing arrangement, and a brush (84) comprising a set of bristles (86) held by the reservoir transfers lubricant from the reservoir to the rotor.

Abstract: The air seal arrangement is for a disc wheel in a gas turbine engine. The disc wheel comprises a sleeve portion having an outer surface. The arrangement comprises a static knife edge seal in registry with the outer surface. The static knife edge seal has a free end adjacent to the outer surface.

Abstract: A sump housing for scavenging lubricant is disclosed herein. The sump housing includes an outer wall defining a chamber. A lubricated structure operable to rotate can be disposed within the sump housing. The sump housing also includes an out-take for lubricant scavenging. The out-take extends across a chordal arc of the chamber. The out-take includes an upstream first portion of the outer wall diverging away from the chordal arc at a first rate. The out-take also includes a downstream second portion of the outer wall opposite the first portion. The second portion diverges away from the chordal arc toward the first portion at a second rate greater than said first rate to define a blunt wall facing the first portion for reducing the likelihood that windage will limit lubricant scavenging.

Abstract: A rotor mechanism of a centrifugal compressor connectable to a power output device and configured to block leakage of lubricants and to recycle lubricants to an oil sump is provided, which includes a rotary shaft with a rolling bearing and a screw nut, a bearing housing for receiving the rolling bearing, and a bearing plate connected to the bearing housing. The screw nut has a surface provided with an oil throw seal, and the bearing housing. As the bearing plate is provided with an oil channel in contact with the oil-returning hole and either one of the bearing housing and the bearing plate is provided with a first labyrinth seal in contact with the screw nut, lubricants leaking out of the rolling bearing is allowed to go to the oil sump via the oil channel and oil-returning hole. The oil slinger thus blocks the lubricants from leaking out of the first labyrinth seal.

Abstract: A centrifugal pump or compressor with a labyrinth seal that produces an axial thrust balance when the impeller shifts in the axial direction due to fluid pressure forces acting on the impeller, and a process for reducing the axial thrust imbalance by regulating the fluid leakage from a front pressure cavity of the pump. The impeller includes a front face that forms part of a front pressure cavity in which fluid pressure acts that produces a thrust imbalance on the impeller. A labyrinth seal with a plurality of teeth is formed between the housing and the front face of the impeller near the impeller inlet. The teeth form gaps with lands formed on the impeller face, where the lands are slanted and stepped such that axial displacement of the impeller changes the gap space to regulate the fluid pressure acting in the front cavity. A self regulating fluid pressure is developed within the front cavity to produce a balancing force against the impeller.

Abstract: A fluid machine and method of operating the same includes a pump portion having a pump impeller chamber, a pump inlet and a pump outlet and a turbine portion having a turbine impeller chamber, a turbine inlet and a turbine outlet. A shaft extends between the pump impeller chamber and the turbine impeller chamber. The shaft has a shaft passage therethrough. A turbine impeller is coupled to the impeller end of the shaft disposed within the impeller chamber. The turbine impeller has vanes at least one of which comprises a vane passage therethrough. A thrust bearing is in fluid communication with said vane passage.

Abstract: An oil control device inhibits the flow of oil along a shaft (8) rotating about an axis. The oil control device comprises an annular body (19) for rotation with said shaft (8) and includes a first face (30) extending generally radially from said axis. A second radially outer circumferential surface (40) is provided, extending generally axially. An oil slinging groove (32) extends into said body (19) and has a mouth (37) defined between a first circumferentially extending rim (38) and a second circumferentially extending rim (39). The second rim (39) is spaced both radially and axially from the first rim (38). The groove (32) is defined at least in part by a wall (34) which meets the first rim (38) at an acute angle to a radial plane. The groove (32) is also defined at least in part by a wall (35) which meets the second rim (39) at an acute angle to the direction of the axis.

Abstract: A sealing system is applied to the interface between a stator and a rotor in a turbine engine to minimize fluid leakage across the interface. One interface can be defined between portions of neighboring rotor disks and a stator. The sealing system includes one or more rows of flow guides, such as airfoils, provided on the rotor disk near the upstream end of the interface. These flow guides can impart tangential velocity on the leakage flow. One or more undulating seal structures can be connected to the stator downstream of the flow guides. These undulating seals can have a periodic waveform conformation. The undulating seals can create unsteadiness in the flow and recirculation of the leakage flow, which causes losses. The sealing system can also include other types of seals, such as labyrinth seals and brush seals, to further create a tortuous path for any leakage flow.

Abstract: An exemplary locating mechanism includes a bearing outer race (422) that has a central axis (z-axis) and that has a turbine end, a compressor end and a slot (421), of an axial length, disposed between the turbine end and the compressor end; and a deformable clip (430) shaped as a semi-cylindrical wall having an axial length less than the axial length of the slot, where in a tension state, the clip (430) has an inner circumference to position the clip (430) with respect to the slot (421) and where in a compression state, the clip (430) has an inner circumference that locates the clip (430) in the slot (421). Various other exemplary technologies are also disclosed.

Abstract: A bearing housing sealing system is provided for a centrifugal pump of the type having a rotating shaft supported by roller bearing elements, a housing for the roller bearing elements, the housing having a cylindrical entry for the passage of the pump shaft through the housing and isolating the roller bearing elements and a lubricant for the roller bearing elements. The bearing housing sealing system comprises an outer stationary cover that is attached about the cylindrical entry of the housing. The outer stationary cover includes a cylindrical opening for fitting around the pump shaft, and a raised portion extending outwardly from the housing and defining a casing having an inner volume. A flinger is positioned within the inner volume of the stationary cover and includes an outer face and an inner face. At least one set of vanes is formed either the outer face or the inner face. The flinger is further configured for attachment to the pump shaft for rotational movement with the shaft.

Abstract: A vacuum generator seal can comprise an upstream annular cavity adjacent to the upstream side of the bearing, a downstream annular cavity adjacent to the downstream side of the bearing, and at least one drain slot positioned on the upstream side of the bearing housing. The vacuum generator seal can include a retainer that at least partially defines the upstream annular cavity. The retainer may be in contact with the bearing housing and may have a tight clearance with the impeller hub. The retainer along with a supply of grease packed within the annular cavities can seal the bearing; and the drain slot can direct water and waste away from the bearing and towards the scroll.

Abstract: A centrifugal supercharger includes a case presenting a compressor chamber and a transmission chamber. An impeller in the compressor chamber is mounted to a shaft that extends into the transmission chamber. The impeller shaft is drivingly connected to a power input shaft by intermeshing gears provided on the shafts. A portion of the transmission chamber defines a fluid reservoir in which lubrication fluid is held. The intermeshing gears, as well as the bearing assemblies supporting the shafts, are located outside the fluid reservoir portion of the transmission chamber. A rotatable fluid-propelling element partly submerged in the lubrication fluid contained within the reservoir portion ensures that sufficient but not excessive lubrication fluid is supplied to the intermeshing gears and the bearing assemblies. A dedicated lubricant reserve system ensures that the required operating level of fluid is provided to, and maintained in, the reservoir portion.

Abstract: A gas turbine having a rotor which includes a turbine rotor, a shaft and a compressor rotor, the turbine rotor having at least one rotor disk and a rotor cone leading from the or a rotor disk to the shaft, the downstream end of the shaft being rotatably supported in a bearing having a bearing chamber, the interior space of the shaft being designed as a flow channel for bearing-chamber sealing air, and the space surrounding the rotor cone upstream of the same being designed as a flow space for cooling air is disclosed. In the region of the rotor connection, the shaft exhibits an expanded portion, at whose upstream end, openings are provided to allow cooling air to enter, and, at whose downstream end, openings are provided to allow cooling air to exit into the space between the bearing chamber and the rotor cone, a wall separating the streams of the cooling air and of the sealing air in the shaft interior from one another.

Abstract: A turbomachine arranged with a rotor and a stator, including radial positioning means ensuring that the rotor is radially position; and a contactless axial balancing device arranged on at least one bladed wheel for axially balancing the rotor at high speed. The turbomachine includes a thrust bearing distinct from the radial positioning means serving to balance the rotor axially at low speed, and without contact at high speed. In addition, the radial positioning means are hydrostatic bearings, the turbomachine including hydrostatic bearing feed circuits suitable for connecting said bearings to a source of fluid under pressure. As a result, it is possible to obtain operation at high speeds with a very long lifetime.

Abstract: An oil-sealing arrangement for cooling fan includes a fan housing provided with a central hollow pipe having a hollow bearing fitted therein in a clearance fit relation, and the bearing having a front end formed into a forward tapered projection; and a blade carrier including a fitting cylinder with a rearward tapered projection. When the fitting cylinder is extended into the hollow pipe on the fan housing, the rearward tapered projection and the forward tapered projection together define a seeped oil chamber between them. When the cooling fan operates, lubricating oil seeped out of the hollow pipe along the bearing is recovered in the seeped oil chamber and flows back to the hollow pipe via the clearance between the bearing and the hollow pipe without being centrifugally thrown out of the cooling fan, allowing the cooling fan to have extended usable life.

Abstract: A centrifugal pump with a mechanical seal cartridge is disclosed. The pump has a pump casing, a rotatable drive shaft extending into the casing from the rear side, and an open impeller mounted on the drive shaft, this impeller having radially extending vanes with leading and trailing edges. The seal cartridge is mounted in a back plate structure of the casing so as to seal a central seal chamber formed by the back plate structure and extending around the drive shaft. This seal chamber has a circumferential wall extending around at least a forward portion of the seal mechanism and spaced therefrom so as to form an open annular space for circulation of fluid which lubricates and cools the mechanical seal.

Abstract: Apparatus is for spacing two relatively rotatable facing surfaces in use by entraining gas between the surfaces. The apparatus includes a first portion defining a generally frusto-conical surface, a second portion including at least one flat surface disposed on a carrier, the flat surface being located adjacent the first portion so that the generally frusto-conical surface and the flat surface face each other and define at least one point of closest engagement between the surfaces, with diverging gaps extending between the surfaces on either side of a plane which contains the point or points of closest engagement and which extends generally orthogonal to the direction of relative rotation, and a device for biasing the flat surface towards the frusto-conical surface to maintain a gap between the surfaces within a predetermined dimensional range. The carrier includes a plurality of portions releasably connected together.

Abstract: A thermal management system and method for a miniature gas turbine engine includes a forward cover having a filter portion along an axis of rotation of a gas turbine engine, a first lubrication passage and a second lubrication passage.

Abstract: A variable displacement compressor includes a housing, a rotary shaft, a bearing, a seal member, a shaft seal chamber, a discharge refrigerant passage and a partition. The partition is provided in the shaft seal chamber for partitioning the shaft seal chamber into a first seal chamber to which the discharge refrigerant passage is opened and a second seal chamber part of the periphery of which is formed by the bearing and the seal member. The partition is provided with a first guide passage through which refrigerant containing lubricating oil flowed from the discharge refrigerant passage into tho first seal chamber is substantially all supplied to the seal member of the second seal chamber.

Abstract: A turbo machine includes a housing having a bearing compartment for receiving lubrication. The housing also provides a buffer compartment for receiving air, for example, compressor bleed air. A turbine shaft is supported within the housing on a bearing for rotation relative to the housing. The bearing is arranged within the bearing compartment. A seal is arranged between the turbine shaft and the housing and separates the bearing and buffer compartments. The seal includes opposing lubrication and air sides that are respectively exposed to the bearing and buffer compartments. The buffer tube is fluidly connected to a body of the buffer compartment. A buffer tube introduces flow generally tangential to an inner surface of the body for generating a swirl within the body. The buffer tube includes a velocity control device such a venturi arranged at an exit of the tube to control the velocity of the flow entering the body.

Abstract: A method and system for carrying out vapor-phase lubrication of a component, such as a bearing for example, is disclosed herein. The method and apparatus can be applied to a turbine engine. The method includes the step of directing a first stream of fluid containing atomized lubricant to the component at a first velocity. The system provides a first fluid injection system for performing the first step. The system also provides a lubricant injection system communicating with the first fluid injection system upstream of the sump cavity and operable to atomize lubricant in the first stream. The method also includes the step of directing a second stream of fluid at a second velocity less than the first velocity to the component. The second stream is for controlling a temperature of the component. The system provides a second fluid injection system for performing the second step. Both of the directing steps are carried out concurrently.

Abstract: A pump for moving a liquid including a stator and a rotor which rotates to move at least one helical pumping member. The rotor in rotation is radially supported relative to the stator only by a layer of liquid maintained between the rotor and stator by rotor rotation.

Abstract: An exemplary system for a turbomachine includes a bore extending from an inner end to an outer end with an inner seat proximate to the inner end and an outer seat proximate to the outer end, a rotatable shaft with an inner slot and an outer slot, an outer seal ring capable of being received by the outer slot and capable of being seated in the outer seat and an inner seal ring capable of being received by the inner slot, capable of bridging the outer seat and capable of being seated in the inner seat where an axial width of the inner seal ring exceeds an axial width of the outer seal ring. Various other exemplary devices, systems, methods, etc., are also disclosed.

Abstract: The present invention provides a water lubricated line shaft bearing assembly, comprising an outer annular steel shell and an inner layer made of low friction material attached to the outer shell, the inner layer having a non-uniform thickness which is formed with wall portions of increased thickness defining a plurality of shaft engaging portions and with wall portions of reduced thickness defining a plurality of lubricant passages. The shaft engaging portions are capable of being journalled on a line shaft adapted to drive a downhole geothermal production pump and the steel shell is engageable with an inner wall of a lubrication tube vertically extending through a water column through which pumped geothermal fluid is delivered, lubrication water bled from the pumped geothermal fluid being used to supply lubrication water through the lubricant passages.

Abstract: An output shaft air/oil separator system comprises an outer housing, an oil passage, a spline shaft having a cavity formed therein that communicates with the oil passage, an output shaft disposed at least partially within the spline shaft cavity that has a first section spaced apart from an inner surface of the spline shaft to form a gap therebetween in communication with the spline shaft cavity and a second section contacting at least a portion of the spline shaft inner surface, a housing cavity defined by at least a portion of an outer surface of the spline shaft and the outer housing, an annular groove formed in the spline shaft communicating with the spline shaft cavity, and at least one port extending between the spline shaft inner and outer surfaces in communication with the annular groove and the housing cavity.