Abstract: An illustrative embodiment of a shaft seal assembly generally includes a first stator, a second stator, and a throttle member. In one illustrative embodiment, the second stator may be formed with a main body and an access plate positioned radially interior with respect to a portion of the first stator. The first stator and second stator may engage one another about a semi-spherical interface comprised of a convex surface on the second stator and a concave surface on the first stator. The second stator may include an internal channel in which a throttle member may be positioned, wherein a radially interior surface of the throttle member may be positioned a shaft.

Abstract: A diverter system is configured to control a direction of drilling fluid or gas from a well bore to a surface platform. The diverter system includes a housing configured to receive a casing from a well bore, at least one outlet configured to direct flow of a drilling fluid or gas out of the housing, and a packing element assembly within the housing and coupled to the housing. The packing element assembly includes a first packing element affixed to the housing, the first packing element including at least one balloon configured to expand in response to an actuation input, and a second packing element concentrically within the first packing element, the second packing element including a first half and a second half, the first half coupled to the second half by a plurality of elastic elements.

Abstract: A sterile carbonated beverage filling system includes a beverage sterilizing section which sterilizes a raw material liquid to prepare a sterilized beverage, a beverage cooling section which cools the sterilized beverage, a carbonated beverage producing section which injects carbonic acid gas into the sterilized beverage to prepare a sterile carbonated beverage, and a carbonated beverage filling section which fills the sterile carbonated beverage into a bottle. The beverage sterilizing section, the beverage cooling section, the carbonated beverage producing section, and the carbonated beverage filling section are connected by a beverage supply pipeline. The carbonated beverage filling section and the beverage supply pipeline each include a rotary machine, and a boundary surface between a rotating body and a non-rotating body of the rotary machine is sealed with sterile water or sterile air.

Abstract: An apparatus for making a nonwoven spunbond web has a spinneret for making endless filaments moving in a predetermined direction. A monomer extractor downstream from the spinneret has an upstream extractor end face directed upstream and forming a gap with a downstream spinneret end face. A cooler downstream of the extractor for the filaments has an upstream cooler end face forming with a downstream extractor end face a second gap. A stretcher downstream of the cooler for the cooled filaments has an upstream stretcher end face forming a third gap with the downstream cooler end face. The filaments are deposited on a web former by the stretcher to form the nonwoven spunbond web. A deformable seal for seals one of the gaps, and means connected to the deformable seal press the seal against the end faces forming the one gap with a variable pressure or contact face.

Abstract: A packing case for a plunger or a piston rod of a reciprocating machine comprises packing cups, each packing cup comprising a body with a hole for the passage of the plunger or rod and a sealing ring seat for housing a sealing ring which slidably bear against the plunger or rod. Packing cups are aligned with each other in series. The packing case comprises lube oil ducts for supplying lube oil from an end of the packing case to the sealing ring seat. Each packing cup comprises sectors, each sector comprising at least lube oil duct portions. The packing cups are positionable to bring, one sector at a time in an activation position where some of the lube oil duct portions of the sector are connected with the lube oil duct portions of an adjacent packing cup to form lube oil ducts. The packing cups are lockable.

Abstract: A lubrication conducting element has first and second side parts, each of which creates a sealing lip. The first side part extends to the intermediate part and the second side part extends to the intermediate part. The first and second side parts and the intermediate part form a first cavity with a first opening. Third and fourth side parts each creates a sealing lip. The third side part extends to the intermediate part and the fourth side part extends to the intermediate part. The third and fourth side parts and the intermediate part form a second cavity with a second opening. A hole in the intermediate part facilitates lubrication flow between the first and second cavities. The side parts, the sealing lips, the intermediate part, the cavities and the openings extend rotationally symmetric around a common symmetric axis.

Abstract: A pressure control device for sealing about a tubular at a wellsite can include a rotatable member, at least two radial seals that sealingly contact the rotatable member, at least two fluid chambers, one chamber being exposed to the rotatable member between the radial seals, and a pump that pumps fluid between the chambers in response to rotation of the rotatable member. A method of operating a pressure control device at a wellsite can include providing at least two chambers in a bearing assembly of the pressure control device, and regulating pressures in the chambers via a valve system in communication with both of the chambers.

Abstract: A thin fan with an axial airgap includes a base having a bottom plate, a circuit unit, a stator set, and a rotor set. The stator set includes at least one winding part, plural induced magnets connected to the winding part, and at least one winding set wound on the winding part. The rotor set includes a hub, plural blades disposed around the hub, and a permanent magnet disposed around a bottom side of the hub and above the induced magnets. The winding set is outside of the permanent magnet. A pivot shaft is between the hub and the bottom plate and includes a bearing sleeve and a rotating shaft inserted in the bearing sleeve. The winding sets are moved outside of the permanent magnet, which reduces the heights occupied by the winding sets and the PCB, facilitating the thinning of the fan.

Abstract: A rotary seal for a rotating shaft passing through a stationary structure is mounted on the stationary structure and has at least two seal ring fabricated from resilient material and a cavity ring disposed within a seal housing bore of a seal housing. The cavity ring is disposed between the seal rings, and a seal cover compression ring compresses the seal rings and cause the seal rings to engage the seal housing bore to create a seal ring outer seal there between and to engage the rotating shaft to create a seal ring inner seal there between while allowing the rotating shaft to rotate relative to the seal ring. The seal housing has a pressurized inlet passage and the cavity ring includes cavity ring inlet passages allowing pressurized air or fluid to be supplied to the seal housing bore to prevent gases from leaking through the rotary seal.

Abstract: The invention concerns a rotor machine and an impeller, of which the rotor machine is intended to function as a liquid pump or as an agitator in a fluid such as a liquid or a colloid, whereby the rotor machine has a pump casing (1) with an impeller (2) mounted in bearings in a manner that allows rotation around an axis (X), and in which the rotor machine has three principal flow pathways, comprising: —an axial inlet opening (4) with a defined area of opening (Ain) —a radially oriented outlet opening (5) with a defined area of opening (Aut), and —a series of radially extending blades (3) that, distributed around the circumference of the impeller, form between them a number of flow channels (22:1-22:n).

Abstract: A seal assembly is disposed in an annular recess in a cylinder chamber between a pump cavity and a pump exterior. The seal assembly includes a main seal and a back-up seal and seals to a pump plunger disposed within the cylinder chamber. The back-up seal includes an extrusion recess extending from a surface of the back-up seal adjacent the main seal along an inner or an outer diameter of the back-up seal. During pumping operations the plunger strokes through the cylinder chamber causing the main seal to extrude into the extrusion recess to form a seal between the plunger and the cylinder chamber.

Abstract: Various methods and devices are provided for use in a walking beam compressor used with an oil well pump. In general, an injectable fibrous sealant is provided for use in a stuffing box to form a seal around a piston rod that couples to a walking beam for pumping oil out of the ground. The injectable fibrous sealant can be configured to form a gas tight seal around the piston rod, while allow reciprocal longitudinal movement of the piston rod therethrough. The injectable fibrous sealant is particularly advantageous as it has an extended life, eliminating the need to replace the seal, and repairs can be performed on-site by injecting additional sealant into the stuffing box.

Abstract: An insert for a pressure sealant type sealing system, an improved sealing system for sealing between an aperture of a machine housing and a rotating shaft of the machine protruding through the aperture, comprising the insert to provide a pair of outlets into the driveshaft arranged collinearly around the driveshaft, a method of injecting the sealant into the stuffing box in two positions on opposite sides of the drive shaft thereby balancing the pressure, and a method of retrofitting existing pressure sealant systems by retrofitting with the insert.

Abstract: A sealing system for a pump includes a housing having an internal chamber adapted to receive a portion of a plunger. A primary seal is translatable within the chamber in sealing relation with the housing. The primary seal includes first and second elastomeric members adapted to sealingly engage the plunger. The first and second elastomeric members are spaced apart from one another a distance greater than or equal to a maximum stroke of the plunger. A secondary seal is spaced apart from the primary seal and adapted to sealingly engage the plunger. A chamber contains a barrier fluid in contact with the primary seal and the secondary seal. A pressurizing device maintains a pressure of barrier fluid at a magnitude greater than a peak pressure of a fluid pumped by the plunger such that the pumped fluid is restricted from entering the barrier fluid chamber.

Abstract: In a self-tightening type sealing device according to the present invention, not only a sealing member is tightened by an internal pressure, but also a tightening force imparting device which tightens the sealing member separately from the internal pressure is provided so as to be remotely operable by a controller. This construction remedies drawbacks involved in manual operation of the tightening force imparting device.

Abstract: A rotating assembly of a mechanical seal includes a retainer, a pair of compression rings, a shaft sleeve, a first rotating seal ring and a second rotating seal ring. The retainer includes a plurality of spring members and a plurality of slide legs longitudinally extended in opposite directions to define limiting spaces where the compression rings are correspondingly restricted. The compression rings are located at opposite sides of the retainer between which the spring members are arranged. In assembling, the retainer, the compression rings, the first rotating seal ring and the second rotating seal ring are assembled on the shaft sleeve. Spring forces of the spring members can actuate the compression rings to push the first rotating seal ring and the second rotating seal ring in the opposite directions.

Abstract: A conduit for a cooling liquid, said conduit for substantially contacting a viscous fluid type sealant within a stuffing box, thereby conducting heat away from said sealant within said stuffing box by flowing said cooling liquid though said conduit.

Abstract: Pumps and valves with movable parts, such as a plunger, typically have seals around the part. The seals may isolate one chamber from another to prevent leakage across the seals. The pressure in one chamber may be different from the pressure in another adjacent chamber, thereby creating a pressure differential across the seal. When the seal is working properly, the pressures in the adjacent chambers remain constant approximately. However, when a seal leaks, pressure will leak across the seal. As such, the chamber with the lower pressure will show an increase in pressure due to seal leakage. Thus, monitoring pressure changes in the chamber with low pressure, or pressure differentials between chambers, serves as an indicator for leakage across the seal and impending seal failure.

Abstract: A fugitive emission collection device for acquiring an atmosphere sample around a seal is provided. The emission collection device has a rigid member that forms a low impedance cavity shaped to overlay a seal. The emission collection device has a conduit with an inlet in fluid communications with the low impedance cavity and an outlet that can be connected to a chemical sensing system to analyze the atmosphere sample for emissions leaking from the seal.

Abstract: A seal for the selective sealing of a rod which is reciprocatable within an opening through the wall of an enclosure such as the filling station of a packaging machine, the seal being actuatable to selectively provide a fluid-tight seal between the rod and the wall and release of the seal for free non-sealed movement of the rod within the opening. A method is disclosed.

Abstract: A packing arrangement for a reciprocating pumps, particularly oil well pumps, in which a stuffing box housing contains a pressure chamber, packing seals mounted within the pressure chamber, a pump rod extending through the housing and the packing seals within said pressure chamber in a manner permitting reciprocation of the rod, utilizes pressure amplification feature by which tubing pressure is amplified in an appropriate ratio and applied to the packing seals to insure that they are correctly compressed at all times without producing a binding of the packing seals with the pump rod. Furthermore, the stuffing box is mounted to the well head in a manner which permits a floating self-alignment upon loosening of a few bolts. Additionally, a venturi connection is provided which flushes the underside of the packing area so as to keep it free and clear of debris buildup.

Abstract: In accordance with illustrative embodiments of the present invention, the arrangement of a combination stuffing box and pressure transmitter system for use with a reciprocating or rotating rod on pumps or pumping systems is disclosed. The stuffing box assembly includes a housing that holds a primary and second seal that are separated by a lubricating reservoir filled with a refined environmentally friendly sacrificial lubricant from the unknown fluid being pumped. The secondary seal transmits the pressure of the fluid being pumped to the sacrificial lubricant that is being sealed from the atmosphere by the primary seal. The secondary seal has its outside diameter sealing against the housing liner and has its inside diameter sealing on the pump rod. It is free to move with respect to the liner and the rod to transmit the pressure of the fluid being pumped to the sacrificial lubricant between the primary and secondary seals, as well as balance the pressure across the secondary seal.

Abstract: A rod seal system having a pair of rod seals that form a buffer area between a high pressure area containing working gas and a low pressure area of a heat engine, such as a Stirling cycle engine. A pump that becomes passively charged with working gas at relatively low pressure and which releases working gas at relatively high pressure when actuated is used to force working gas from the buffer area to the high pressure area through a conduit. The working gas may be hydrogen gas and the pump may be a metal hydride pump that is thermally actuated. The low pressure area may contain air and lubricant at atmospheric pressure. A system for separating the lubricant collecting within the buffer area and reintroducing the lubricant into the low pressure area can also be incorporated into the rod seal system.

Abstract: An apparatus for injecting sealant into the packing chamber of a valve requiring no venting of pressure within the valve. The apparatus which includes an interior valve is attached to the valve body by drilling and tapping a connection or by friction welding. A high pressure packing gland is attached to the apparatus and a drill bit is passed through the combination to complete an opening into the packing chamber. The drill bit is withdrawn past the interior valve, which is closed and then out of the combination. The packing gland is removed and a sealant injection device attached. The interior valve is opened and sealant injected into the packing chamber. The valve is closed, a completion plug installed into the end of the fitting, and a completion cap with a sealing ring is installed over the entire valve and fitting, thereby forming multiple redundant seals.

Abstract: A back seat rising stem gate valve has a valve body with a flow passageway through it and an open top, a gate that is vertically positioned to open and close the passageway, a stem extending upwardly from the valve body, the lower end of the stem being attached to the gate, a bonnet secured to the valve body by which the valve body open top is closed, the stem extending through an opening in the bonnet, a packing box slidably positioned in an opening in the bonnet and receiving the stem, the packing box having a back seat circumferential sealing surface surrounding the valve stem, and the valve stem having an integral enlarged diameter shoulder so that when the stem is in the full upward position the packing box can be displaced downwardly forcing the back seat sealing surface to seal against the stem shoulder to seal against fluid leakage along the valve stem. In one embodiment the packing box is downwardly displaced by hydraulic pressure, such as hydraulic pressure supplied from within the valve body.

Abstract: A dynamic oil control mechanism for a press including a vacuum inducing ejector or jet-pump to vacuum oil leaking from about an oil seal. The oil seal is located around the drive piston on the press slide to prevent oil migration from the press crown to the die area or slide of the press. A drain port is located about the housing in which the drive piston reciprocates. The ejector maintains a low pressure area within the drain port to pull oil leaking from the seal into the drain port and away from the drive piston. The vacuumed oil is then transferred to an oil reservoir.