Abstract: A rotating machine includes: a rotary shaft that is configured to rotate about a center axis; an impeller that is fixed to the rotary shaft and that is configured to compress a working fluid by integrally rotating with the rotary shaft; a casing that covers the rotary shaft; a first seal portion that is disposed at a position away from the impeller in a center axis direction of the rotary shaft and that is configured to seal a portion between the rotary shaft and the casing with a seal gas; a second seal portion that is disposed between the impeller and the first seal portion and that is configured to seal a portion between the rotary shaft and the casing; and a gas supply path through which the seal gas is introduced into the first seal portion.

Abstract: The present disclosure describes a sealing apparatus for a robot and an articulated robot utilizing the sealing apparatus. In one embodiment, the sealing apparatus includes a first enclosure and a second enclosure. The second enclosure may be rotatably connected to the first enclosure such that the first enclosure and the second enclosure cooperatively define a gap between the first enclosure and the second enclosure. The sealing apparatus may further include a seal disposed in the gap such that the seal and the second enclosure cooperatively define a chamber. The sealing apparatus also includes an elastomer disposed in the chamber. The elastomer may be compressed by the seal and the second enclosure to generate an elastic force that presses the seal against the first enclosure.

Abstract: A sealing arrangement includes a stationary spindle and a wheel hub rotatably mounted to the spindle. A seal assembly is disposed between the spindle and the wheel hub and includes an outer carrier case having a first cylindrical portion disposed in the inner bore of the wheel hub and a first radial portion extending radially inward from an end of the first cylindrical portion. An inner seal element has an inner metal case having cylindrical portion received on an outer surface of the stationary spindle and includes an annular portion extending radially outwardly from an end of the cylindrical portion and axially spaced from the first radial portion of the outer carrier case. An oil seal lip extends radially outwardly and axially from the annular portion of the inner metal case and engages the first radial portion of the outer carrier case.

Abstract: Bolt holes 16 are formed in a joint part 14 of a turbine housing 12, with flanged bolts 40 screwed in the bolt holes 16. A flange part 32 of a bearing housing 30 is sandwiched between bearing surfaces 44a of the flanged bolts 40 and an inner end face 14b of the joint part 14. A sealing ring 48 is interposed in an annular space s. Before the flanged bolts 40 are fastened, there is formed a height difference G equivalent to a compression allowance h for the sealing ring 48, between an outer end face 60a of the joint part 14 and a bolt receiving surface 32a of the flange part 32. The flanged bolts 40 are screwed into the bolt holes 16 until the bearing surfaces 44a make tight contact with the outer end face 60a so as to resiliently deform the sealing ring 48.

Abstract: A hydrodynamic seal (10) for use with a rotating shaft (24) is disclosed. The seal includes a face seal (20) and a mating ring (22) fixed or connected to rotate with the shaft. A clamping nut (30) is adjacent to the mating ring and includes threads to secure a portion of the clamping nut to the shaft via a threaded interface (32). Embodiments of the seal and related assembly include at least one of: a spring component (140) with or on the clamping nut; a clamping surface (150) on an interface between the mating ring and the clamping nut, the clamping surface being substantially parallel to a thread pitch on the threaded interface; and a pilot surface (250) on the clamping nut.

Abstract: Shroud device thermally protecting a gas turbine blade, having a ceramic layer and a metallic layer, the metallic layer being thermally protected by the ceramic layer, the ceramic layer being mechanically joined to the metallic layer by a fixation device having a plurality of protrusions extending from the metallic layer designed so as to engage with a plurality of cavities located in the ceramic layer, such that there exists a gap between the cavities and the protrusions at ambient temperature, the gap disappearing at high temperature operation of the gas turbine, the protrusions being then locked into the cavities.

Abstract: The turbomachine includes a mid turbine vane frame, with an annular compartment formed between the mid turbine vane frame and a low-pressure turbine casing being sealed by means of at least two ring seals, wherein one ring seal is in contact with the mid turbine vane frame and the other ring seal is in contact with the low-pressure turbine casing and a radial annular overlap is thereby created with the first-mentioned ring seal.

Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bodies is sealed to the separator with a floating seal arrangement including a seal interface between a floating seal of the floating seal arrangement and a hub of a fixed scroll compressor body. A seal retaining ring prevents axial motion of a seal member of the seal interface during start-up operations due to pressure imbalances across the seal member.

Abstract: A chuck assembly has a wafer chuck attached to a shaft that has a passage defined therewithin. The chuck assembly also has a seal module that has a rotatable assembly and a fixed assembly. The rotatable assembly is disposed around and anchored to the shaft and has a spacer, a rotatable collar, a rotatable diaphragm, and a rotatable seal ring connected to the rotatable collar through the diaphragm with a leak-tight seal. The fixed assembly is disposed around the spacer and has a fixed collar and a fixed seal ring that is sealed to the fixed collar with a leak-tight seal. The fixed collar has a passage defined therewithin that has an opening that connects through the spacer to the passage defined within the shaft. The chuck assembly further includes a housing, to which the fixed assembly is fastened, that may be affixed to a base.

Abstract: A sealing assembly for a track hinge comprises a sealing ring having an annular sealing edge that sealingly abuts on a radially-extending surface of a bushing of the track hinge. An elastic ring fixedly abuts on an outer track link of the track hinge and biases the sealing ring in axial and radial directions. A support ring is disposed radially inward of the sealing ring and is connected at least substantially to a radially-inner surface of the sealing ring. The support ring at least substantially prevents the sealing ring from directly contacting a radially-inner portion of the track hinge at least in the radial direction.

Abstract: The present application provides a sealing assembly for use between a first component and a second component of a rotary machine. The sealing assembly may include a first sealing segment having a first end with a first angled surface and a second sealing segment having a second end with a second angled surface. The first angled surface of the first end of the first sealing segment meets the second angled surface of the second end of the second sealing segment at a joint.

Abstract: A sealing assembly for a track hinge comprises a sealing ring having an annular sealing edge that sealingly abuts on a radially-extending surface of a bushing of the track hinge. An elastic ring fixedly abuts on an outer track link of the track hinge and biases the sealing ring in axial and radial directions. A support ring is disposed radially inward of the sealing ring and is connected at least substantially to a radially-inner surface of the sealing ring. The support ring at least substantially prevents the sealing ring from directly contacting a radially-inner portion of the track hinge at least in the radial direction.

Abstract: A mechanical seal assembly has a housing fixedly secured on the shaft to be sealed. A slide ring is positive-lockingly connected to the housing. A counter ring interacts with the slide ring. The housing is frictionally connected to the shaft on a side of the slide ring facing away from the counter ring. A secondary seal is disposed in a cutout of the slide ring and secured by an axial securing element.

Abstract: A foil thrust bearing forms the primary rotating interface for a film riding face seal. This face seal includes a spring system that will allow the entire assembly to translate axially relative to a static attachment. The complete assembly will form a hybrid foil/film riding face seal that shows much promise at being sufficiently flexible to enable operation in a gas turbine engine. The seal includes a flexible top plate having a non-flat surface under its working conditions, and a spring support system to allow the top plate to accommodate axial excursions and out-of-flat distortions.

Abstract: A housing member for an actuator assembly for adjusting the orientation of a mirror element in a mirror assembly provides integral weather seals and noise dampeners. The weather seals and noise dampeners are injection molded with or onto a base wall of the housing member to thereby form seals and dampeners that have superior adhesion or mechanical retention to the housing member and, therefore, are not subject to degradation from noise. In addition, the integral seals and dampeners reduce the time and cost of assembling and servicing the actuator assembly. The housing member includes a base wall, and a sidewall which connects to the base wall and extends around the perimeter of the base wall. The side wall includes connectors for securing the first housing to the second housing.

Abstract: An improved seal for defining a back pressure chamber in a scroll compressor includes a tab extending toward the rear face of the orbiting scroll. The tab reduces the contact force created against the rear face of the orbiting scroll by the gas pressure in the back pressure chamber. Thus, the inventive seal increases seal life.

Abstract: A split face seal that provides fluid sealing between a housing and a rotating shaft includes first and second seal rings each having at least two seal ring segments and a radially extending seal face. The seal ring faces of the seal rings are opposed to one another. One of the seal rings is connected to the rotating shaft to rotate therewith, while the other seal ring is connected to the housing. The split seal also includes a mechanism for introducing a fluid to the seal faces of the first and second seal rings and a split support member having at least two support segments for radially supporting the first seal ring to inhibit radial separation of the seal ring segments of the first seal ring.

Abstract: An apparatus for sealing a rotary tube drum of a furnace to another furnace component. Two concentric resilient metal ring segments are provided on a disk to comprise the sealing elements of the present invention. A plurality of springs arranged as a ring apply pressure to the disk and ring segments to ensure a consistent and self-adjusting seal between the joined components. Links located circumferentially about the disk limit lateral movement, yet allow axial movement, of the seal. It is thereby possible, according to the present invention, to provide a resilient seal between a rotary tube and another component of a furnace that yields a self-adjusting gas-impermeable seal between the mating components.

Abstract: The shaft seal assembly of cartridge designed for sealing shafts entering or exiting enclosed vessels. The enclosed vessels may have a pressure different from the atmospheric pressure and the seal will normally prevent leakage from or into the vessel. The seal is accomplished by having a plurality of fluid pressures presented to different faces or portions of the seals. Utilization of these pressures provides a seal between the faces of the rotating parts and the stationary parts of the seal with a minimum of friction. This reduced friction is a result of some amount of air movement between the sealing faces. This air movement into and out of the seal, resulting from fluid pressure differentials, will also carry away any contaminants that may get into the seal, either to the ambient atmosphere or to a recovery system. The seal is designed to accept axial and radial shaft displacement while maintaining a positive seal between the vessel and the atmosphere.