Abstract: A system includes a turbine combustor. The turbine combustor has a combustor liner disposed about a combustion chamber, a flow sleeve, and a radial passageway. The flow sleeve disposed at an offset about the combustor liner to define a passage, wherein the passage is configured to direct an exhaust gas flow toward a head end of the turbine combustor. The radial passageway extends between the flow sleeve and the combustor liner, and the radial passageway is configured to isolate an oxidant flow through the radial passageway from the exhaust gas flow through the passage for a first operating condition and a second operating condition of the turbine combustor. The offset between the combustor liner and the flow sleeve at the first operating condition is greater than the offset between the combustor liner and the flow sleeve at the second operating condition.

Abstract: An oil-free compressor for a rail vehicle includes a multi-piece compressor housing, a first piston cylinder supported in a first opening in the compressor housing, a second piston cylinder supported in a second opening in the compressor housing, and a multi-piece crankshaft assembly supported by the compressor housing. The crankshaft assembly is linked to pistons of the first and second piston cylinders by respective connecting rods. The connecting rods connect to a wrist pin associated with each of the pistons, and the wrist pins are respectively supported by a dry lubricant bushing to the associated piston. The compressor housing may have at least a first housing portion and a second housing portion. The first housing portion and the second housing portion may form respective halves of the compressor housing that are secured together with mechanical fasteners.

Abstract: A system includes a turbine combustor. The turbine combustor has a combustor liner disposed about a combustion chamber, a flow sleeve, and a radial passageway. The flow sleeve disposed at an offset about the combustor liner to define a passage, wherein the passage is configured to direct an exhaust gas flow toward a head end of the turbine combustor. The radial passageway extends between the flow sleeve and the combustor liner, and the radial passageway is configured to isolate an oxidant flow through the radial passageway from the exhaust gas flow through the passage for a first operating condition and a second operating condition of the turbine combustor. The offset between the combustor liner and the flow sleeve at the first operating condition is greater than the offset between the combustor liner and the flow sleeve at the second operating condition.

Abstract: An oil-free compressor for a rail vehicle includes a multi-piece compressor housing, a first piston cylinder supported in a first opening in the compressor housing, a second piston cylinder supported in a second opening in the compressor housing, and a multi-piece crankshaft assembly supported by the compressor housing. The crankshaft assembly is linked to pistons of the first and second piston cylinders by respective connecting rods. The connecting rods connect to a wrist pin associated with each of the pistons, and the wrist pins are respectively supported by a dry lubricant bushing to the associated piston. The compressor housing may have at least a first housing portion and a second housing portion. The first housing portion and the second housing portion may form respective halves of the compressor housing that are secured together with mechanical fasteners.

Abstract: An annular sealing device having a positive stop to prevent over pressurization on the sealing device. The annular sealing device includes a substantially rigid support member having at least one substantially flat outer surface portion. There is a generally round cavity formed in the substantially rigid support member adjacent the at least one substantially flat outer surface. This generally round cavity has a first predetermined diameter and a predetermined depth. A generally round elastomeric sealing member having a predetermined thickness and a second predetermined diameter is disposed in the generally round cavity. Elastomeric sealing member has a substantially flat face engageable with a predetermined surface to be sealed. A stop means is engageable with at least a portion of the substantially flat outer surface portion of the substantially rigid support member for preventing undue penetration of the surface to be sealed into the generally round elastomeric sealing member.

Abstract: An annular sealing device having a positive stop to prevent over pressurization on the sealing device. The annular sealing device includes a substantially rigid support member having at least one substantially flat outer surface portion. There is a generally round cavity formed in the substantially rigid support member adjacent the at least one substantially flat outer surface. This generally round cavity has a first predetermined diameter and a predetermined depth. A generally round elastomeric sealing member having a predetermined thickness and a second predetermined diameter is disposed in the generally round cavity. Elastomeric sealing member has a substantially flat face engageable with a predetermined surface to be sealed. A stop means is engageable with at least a portion of the substantially flat outer surface portion of the substantially rigid support member for preventing undue penetration of the surface to be sealed into the generally round elastomeric sealing member.

Abstract: An air inlet valve assembly for a rotary scroll compressor is disclosed. The rotary scroll compressor includes stationary and orbiting scroll elements which are intermeshed and nested to form at least one spiraling compression pocket therebetween, a drive mechanism drives the orbiting scroll element in an orbit about the stationary scroll element, and an anti-rotation bearing device maintains the orbiting scroll element substantially non-rotational with respect to the stationary scroll element. The air inlet valve assembly supplies an uncompressed gas (e.g., ambient air) to the compression apparatus and prevents backward rotation of the orbiting scroll element when power to the drive mechanism is terminated. The air inlet valve assembly includes a valve piston positioned within an air intake channel leading to the suction region of the rotary scroll compressor, the valve piston having a first position blocking the air intake channel and a second position unblocking the air intake channel.

Abstract: A crankshaft assembly for a scroll compressor. The scroll compressor includes intermeshed and nested stationary and orbiting scroll elements which define at least one spiraling compression pocket therebetween and an orbital drive mechanism for driving the central axis of the orbiting scroll element about the central axis of the stationary scroll element while maintaining the orbiting scroll element substantially non-rotational with respect to the stationary scroll element. The crankshaft assembly of the orbital drive mechanism includes a crankshaft member having an elongated shaft portion for rotation about a central axis of rotation and an orbiting rotational bearing affixed to a first distal end of the crankshaft member. The center of rotation of the orbiting rotational bearing is radially offset with respect to the central axis of rotation of the crankshaft member and is adapted to accept and rotationally engage a hub portion projecting from the orbiting scroll element.

Abstract: A lubrication apparatus for an anti-rotation assembly of an oiless rotary scroll compressor is disclosed. The scroll compressor includes a stationary scroll element and an orbiting scroll element which orbits about the stationary scroll element in a non-rotational fashion. At least one anti-rotation assembly is provided for preventing relative rotation between the orbiting and stationary scroll elements. The anti-rotation assembly, which includes a first rotational bearing component mounted on the interior of the housing, a second rotational bearing component mounted on the orbiting scroll element and an offset crank member interconnecting the first and second rotational bearing components, is lubricated via a lubrication channel. The lubrication channel extends from a lubrication port disposed on the exterior of the housing, through the first rotational bearing component, thereafter through a channel provided in the offset crank member, thus allowing the lubricating agent (e.g.

Abstract: An axial load resistant anti-rotation bearing for a rotary scroll compressor is disclosed. The rotary scroll compressor includes stationary and orbiting scroll elements and a drive mechanism for driving the orbiting scroll element in an orbit about the stationary scroll element. The stationary and orbiting scroll elements are intermeshed and nested to form at least one spiraling compression pocket therebetween. The at least one compression pocket generates forces which tend to force the stationary and orbiting scroll elements apart in a direction parallel to their central axes. The axial load resistant anti-rotation bearing disclosed resists such axial separating forces and employs two rotational bearing components, a first rotational bearing component mounted on the interior of the compressor housing and a second rotational bearing component mounted on the orbiting scroll element.

Abstract: An anti-rotation device for a scroll compressor. The scroll compressor includes intermeshed and nested stationary and orbiting scroll elements which define at least one spiraling compression pocket therebetween and an orbital drive mechanism for driving the central axis of the orbiting scroll element about the central axis of the stationary scroll element. The anti-rotation device maintains the orbiting scroll element substantially non-rotational with respect to the stationary scroll element during its orbit thereabout and includes at least one anti-rotation bearing which includes a first bearing element mounted stationary with respect to the stationary scroll element, a second bearing element mounted on the orbiting scroll element and an offset crank member.

Abstract: A two-way control valve arrangement for selectively opening a first passageway to either one of a second passageway and a third passageway, wherein a housing structure is provided having a valve body opening with circular sidewall and a base portion intersecting the first, second and third passageways; a valve body secured within the valve body opening, and a piston with a plunger at the end thereof reciprocally disposed within a piston cylinder extending axially through the valve body, the piston being reciprocal to either bias against the valve body to close the piston cylinder therethrough and accordingly the second passageway, or to bias against the base portion of the valve body opening to close the third passageway.

Abstract: In a centrifugal separator for separating a liquid from a compressed gas, a baffle is provided to separate the centrifugal chamber into an upper sub-chamber and a lower sub-chamber but does not contact the walls of the chamber thereby being insufficient to prevent downward flow of separated liquid along the interior wall of the two sub-chambers, and insufficient to prevent flow of compressed gas from one sub-chamber to the other sub-chamber, the baffle nevertheless being sufficient to prevent turbulent gas flow in the lower sub-chamber when collected liquid is drained therefrom.

Abstract: A shuttle valve for a gas drying system that cleans and dries a stream of unpurified pressurized gas received from a source thereof and supplied to a pneumatic system that uses such a purified pressurized air. The valve includes a housing that connects a drying assembly to a structure that conveys the unpurified pressurized air to the drying assembly. The housing contains a choke disc provided with an orifice and a movable piston located in axial alignment with the choke disc. When the unpurified pressurized air is directed into the drying assembly for drying, the piston moves away from the choke disc to permit dry air to freely flow from the drying assembly and through the valve to the system utilizing purified pressurized air.

Abstract: A two-way control valve arrangement for selectively opening a first passageway to either one of a second passageway and a third passageway, wherein a housing structure is provided having a valve body opening with circular sidewall and a base portion intersecting the first, second and third passageways; a valve body secured within the valve body opening, and a piston with a plunged at the end thereof reciprocally disposed within a piston cylinder extending axially through the valve body, the piston being reciprocal to either bias against the valve body to close the piston cylinder therethrough and accordingly the second passageway, or to bias against the base portion of the valve body opening to close the third passageway.

Abstract: An air dryer includes two desiccant chambers, a control system and a cover member into which a shuttle valve mechanism has been incorporated. Secured atop the chambers, the cover member defines an outlet port, first and second passages, and a horizontal chamber between the passages in which a shuttle valve can be moved reciprocatingly. The horizontal chamber has two ends, a first interconnected to the first desiccant chamber by the first passage and a second interconnected to the second desiccant chamber by the second passage. The outlet port of the dryer extends from the horizontal chamber. Governing the flow of air into and out of the dryer, the control system periodically switches the incoming flow of untreated air between the two desiccant chambers. The control system thus determines which desiccant chamber will operate in a drying mode, with the other being operated in a purge mode.

Abstract: A low profile valve for discharging pressurized air to a system for utilizing such pressurized air. The valve includes a housing for mounting in or to an associated structure, and has at least one opening through which pressurized air is directed to and from the valve. A piston is located in the housing for axial movement therein, and the piston has a face portion containing a seal for sealing the piston against a fixed surface of the associated structure. In addition, a spring can be located about the piston for biasing the piston in the direction of the fixed surface.

Abstract: A twin tower gas drying system for cleaning and drying a stream of unpurified pressurized gas received from a source thereof for use of a pneumatic system. The drying system includes a manifold block provided with the plurality of ports. A separator and sump is connected to such block and to one of the ports for initially separating moisture and particulates from such stream of unpurified gas, and for directing the remainder of the stream to the one port in the block. A pair of desiccant containing canisters are threadably mounted on a surface of the block opposite that of the separator and sump by two respective threaded shuttle valves. The canisters and shuttle valves are, in addition, connected in fluid communication with certain of the ports provided in the block for supplying and removing pressurized air from the canisters. A port is provided for discharging dry clean air from the block. Other ports provided in the block exhaust purged air to the atmosphere.

Abstract: A desiccant media containing cartridge for use in a gas drying apparatus adapted to firstly function in a gas drying cycle in which a moist gas is permitted to pass upwardly through said desiccant media whereby at least a portion of the moisture is removed from said gas, and adapted to secondly function in a desiccant media purge cycle in which a portion of said dried gas is allowed to pass back downwardly through said desiccant media to absorb moisture therefrom thereby at least partially regenerating said desiccant media, including a means for concentrating the desiccant purge cycle at the bottom of the desiccant media, which means comprise a purge tube extending vertically partially through the desiccant media, and a flapper valve adjacent to an upper end of the purge tube adapted to close and restrict flow of gas through the purge tube when the gas is flowing upwardly in during the gas drying cycle and to open and promote gas flow through the purge tube when the gas is flowing downwardly during the desicc

Abstract: An aftercooler apparatus condenses vapor in untreated gas discharged from a compressor of a gas drying system. The apparatus includes a radiator, a bypass line and a bypass valve. The radiator features a first inlet, a second inlet and an outlet. The first inlet connects to the compressor from which it receives the untreated gas. The outlet connects to the next component in the gas drying system. The radiator condenses the vapor suspended in the untreated gas and passes aftercooled gas resulting therefrom via its outlet to the next component. The bypass line, through which the untreated gas may flow, connects at one end between the compressor and the first inlet and at another end to the second inlet. The bypass valve senses the difference in pressure between the first inlet and the outlet. The bypass valve also controls the flow of the untreated gas in response to the difference in pressure.