Abstract:
The present invention relates to a shaft seal (1) comprising a sealing element (14) mounted co-axially to a rotary sealing ring (10) to form a primary seal between opposed faces thereof to substantially prevent fluid flow across the primary seal. The sealing ring (10) is mounted about the shaft (2) on an inner sleeve (11). The inner sleeve is fixed to the shaft to be axially and rotationally fast. The sealing ring (10) is connected to the inner sleeve (11) by half-moon shaped locking members (12) extending through the inner sleeve (11) outwardly into the sealing ring (10). The locking members (12) lock the sealing ring (10) rotationally and axially fast on the inner sleeve (11).
Abstract:
The present invention relates to a shaft seal (1) comprising a sealing element (14) mounted co-axially to a rotary sealing ring (10) to form a primary seal between opposed faces thereof to substantially prevent fluid flow across the primary seal. The sealing element (14) is urged axially towards the rotary ring (10) by a springs (15) acting between a pusher sleeve (15) connected to the sealing element (14) and a seal housing (19). A secondary seal formed between the pusher sleeve (15) and the housing (19) by a sealing member (20) located in a channel (21) in the pusher sleeve (15).
Abstract:
Two components (42, 44) are bonded together by placing a layer of braze filler metal between and in contact with the faying surfaces, and then directing a high energy beam (46) through one of the components, through the faying surfaces and the layer of brazer filler metal, and into the second component so as to form a melt-through weld bond (53) centrally located between two braze bonds (54, 55). Relative movement between the high energy beam and the components can be provided so that the high energy beam is always perpendicular to the portion of the faying surfaces in which the weld bond is currently being formed. The two components can be an impeller disc and an impeller cover.
Abstract:
A device for measuring three-dimensional coordinate position of a blade to validate the position on an impeller having a main guide track (24) with a mounting collar (26) on one end with a secondary guide track securably received on the main guide track. The secondary guide track (46) has an arm member that includes a vertically extending rod. The lower end of the rod is used to contact the coordinate points to be measured on the face of the blade. The X, Y, and Z coordinate measurements of each point along the face of the blade is read from scale indicia located along the main guide track, the secondary guide track and the rod extending down from the secondary guide track.
Abstract:
An improved inlet valve system for a cylinder chamber of a reciprocating compressor and a method for utilizing a high pressure gas source to control an inlet valve system for a cylinder chamber of a reciprocating compressor is disclosed. The inlet valve system may include an unloader, a valve assembly including a cylindrical valve body circumferentially disposed about a central axis of the inlet valve system, and a control valve actuator including a control valve body. The valve assembly may include a plurality of inlet valve elements disposed respectively in valve element ports fluidly connected to a control valve passage. A high pressure gas source is utilized to hold open and close the inlet valve elements via the control valve passage in order to control the capacity of the reciprocating compressor.
Abstract:
A pumped heat energy storage (PHES) system (100) including a charging circuit and a discharging circuit effective to balance or split a total heat rejection of the PHES system between the charging circuit and the discharging circuit. The charging circuit may include thermal storage vessels (102, 104) to store thermal energy generated from a first compressor (110). A first heat rejection system (128) is fluidly coupled with the thermal storage vessels to remove thermal energy from the charging circuit. The discharging circuit may include a first turbine (146) fluidly coupled with the thermal storage vessels to extract thermal energy stored in the thermal storage vessels and convert the thermal energy to mechanical energy via an expansion of a second working fluid. A second heat rejection system (156) is fluidly coupled with the thermal storage vessels and the first turbine to remove thermal energy from the discharging circuit.
Abstract:
A drainage system for a stage of a turbine. The drainage system includes at least one annular recess (148) defined in the inner surface (150) of the casing (104) of the turbine and configured to accumulate liquid therein. An axial slot (142) and a radial slot (156) are formed in a diaphragm (112) of the turbine, the axial slot (142) extending between the upstream and downstream faces (134,138) of the diaphragm. The drainage system further includes a tubular member (162) including an axially extending tubular portion (164) disposed in the axial slot (142) and a radially extending tubular portion (166) disposed in the radial slot (156). The radially extending tubular portion (166) is sized and configured to fluidly couple the at least one annular recess (148) and the axially extending tubular portion (164), such that liquid in the at least one annular recess is drained therefrom and discharged from the stage of the turbine via the axially extending tubular portion (164).
Abstract:
A balance piston seal assembly for a balance piston of a compressor is provided. The balance piston seal assembly may include a balance piston seal, a stationary support, and a gripping assembly disposed between the balance piston seal and the stationary support. The balance piston seal may be configured to be disposed about the balance piston such that an inner radial surface of the balance piston seal and an outer radial surface of the balance piston define a radial clearance therebetween. The stationary support may be configured to be coupled or integral with a casing of the compressor. The gripping assembly may be configured to secure the balance piston seal with the stationary support and to maintain concentricity between the balance piston seal and the balance piston during thermal radial expansion of the balance piston seal relative to the balance piston.
Abstract:
A supersonic compressor including an inlet configured to receive and flow therethrough a process fluid. The supersonic compressor may further include a rotary shaft and a centrifugal impeller coupled therewith. The centrifugal impeller may be configured to impart energy to the process fluid received and to discharge the process fluid therefrom in at least a partially radial direction at an exit absolute Mach number of about one or greater. The supersonic compressor may further include a static diffuser circumferentially disposed about the centrifugal impeller and configured to receive the process fluid therefrom and convert the energy imparted. The supersonic compressor may further include a collector fluidly coupled to and configured to collect the process fluid exiting the diffuser, such that the supersonic compressor is configured to provide a compression ratio of at least about 8:1.
Abstract:
A balance piston for a compressor is provided. The balance piston may include an annular body and a seal extending from an axial surface of the annular body. The annular body may be configured to be disposed about and coupled with a rotary shaft of the compressor. The seal may be configured to form a sealing engagement with at least one component of the compressor to prevent a flow of a process fluid from an impeller of the compressor to a seal cavity of the compressor.