310 results about "Turbine wheel" patented technology

An exhaust turbocharger has a housing, in which a shaft is mounted by bearings, which carries a turbine wheel, on the one hand, and a compressor wheel, on the other hand. An electric machine has a rotor and a stator. The rotor is secured on the shaft for conjoint rotation therewith and the stator surrounds the rotor radially on the outside. A sleeve, which supports the rotor radially and axially, is arranged between the stator and the rotor. The sleeve has at least one fluid duct, by way of which a cooling fluid can be guided toward the bearings of the shaft.

A turbine wheel may include an inner hub having a central axis, an outer ring concentric with the inner hub, and an intermediate ring concentrically disposed between the inner hub and the outer ring, and a plurality of turbine blades extending between the intermediate ring and the outer ring. The turbine blades may be oriented to be driven by a fluid stream flowing through the turbine wheel to rotate the turbine wheel in a first direction about the central axis. In addition, the turbine wheel may further include a plurality of compressor blades extending between the inner hub and the intermediate ring. Also, the compressor blades may be oriented to propel a fluid in a downstream direction when the turbine wheel is rotated in the first direction.

An aspect of an exhaust turbine according to the present disclosure is provided with: a rotating shaft; a turbine wheel attached to one end side of the rotating shaft; a turbine housing having a scroll portion formed on an outer peripheral side of the turbine wheel; a bearing housing that accommodates a bearing for supporting the rotating shaft; a fastening member that fastens a first flange portion of the turbine housing and a second flange portion of the bearing housing together; and a heat-shielding plate having an outer peripheral edge portion held between the first flange portion and the second flange portion. In a first cross section that passes through the center of the rotating shaft and a tongue portion of the turbine housing along an axial direction of the rotating shaft, when the innermost position, in a radial direction of the rotating shaft, of a contact surface between the first flange portion and the outer peripheral edge portion of the heat-shielding plate is defined as a first seal inner end, the innermost position, in the radial direction, of a contact surface between the second flange portion and the outer peripheral edge portion of the heat-shielding plate is defined as a second seal inner end, and one of the first seal inner end and the second seal inner end that is positioned outside in the radial direction is defined as a seal inner end, the seal inner end is disposed outside the tongue portion in the radial direction.

A centrifugal separator for cleaning gas containing contaminants includes a stationary casing, enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in the separation space and being arranged to rotate around an axis of rotation. The separator includes a gas outlet arranged in the stationary casing and configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet arranged in the stationary casing and configured to permit discharge of liquid contaminants separated from the gas to be cleaned. The separator includes a turbine casing in which a turbine wheel that is drivingly connected to the rotating member is arranged; and a nozzle arranged for directing a jet of pressurized liquid towards the turbine wheel, thereby rotating said turbine wheel. The turbine casing includes a turbine outlet for drainage of the liquid used for rotating said turbine wheel. The turbine casing has a geometry such that the liquid used for rotating said turbine wheel is leaving said turbine outlet with a remaining kinetic energy that is higher than the energy obtained from gravity alone.

The invention relates to a rapid measurement method and device for cavitation damage of a water turbine runner and computer equipment. The method comprises the following steps: acquiring point cloud data collected by a 3D laser scanner for the surface of the turbine runner; determining a cavitation erosion area according to geometric features of the point cloud data; according to the point cloud data corresponding to the cavitation erosion area, the cavitation erosion damage area, the cavitation erosion damage depth and the cavitation erosion damage volume are determined; and according to the cavitation erosion area, the cavitation erosion damage area, the cavitation erosion damage depth and the cavitation erosion damage volume, determining a cavitation erosion damage measurement result of the water turbine runner. According to the method, based on the characteristics of high precision and interference resistance of the 3D laser scanner, the area with cavitation erosion is determined by using the acquired point cloud data, the area, depth and volume of the cavitation erosion area are calculated, an accurate cavitation erosion damage measurement result of the water turbine runner is generated, the limitation of a detection environment and an operation condition on cavitation erosion damage detection is avoided, and the accuracy of the detection result is improved. And efficient cavitation damage detection is realized, so that the safety of the hydroelectric equipment is improved.

A system includes an inlet pipe, a pressure control valve, a flow-through electric generator, and an outlet pipe. The inlet pipe is connected to a carbon dioxide pipeline that flows carbon dioxide. The pressure control valve is installed on the inlet pipe and is configured to reduce a pressure of the carbon dioxide to a specified pressure. The flow-through electric generator includes a turbine wheel, a rotor, and a stator. The turbine wheel is configured to rotate in response to expansion of the carbon dioxide flowing into an inlet of the turbine wheel and out of an outlet of the turbine wheel. The flow-through electric generator is configured to generate electrical power upon rotation of the rotor within the stator. The outlet pipe is configured to receive the carbon dioxide that has expanded through the flow-through electric generator and flow the carbon dioxide to a carbon dioxide pipeline network.

To provide an electric turbomachine for a freezer that comprises a heat insulating mechanism for suppressing heat input from a motor to a refrigerant flowing in a refrigerant flow path of a turbine, and has a high degree of freedom in designing a structure for fixing a stationary vane.SOLUTION: An electric turbomachine for a freezer comprises a motor and a turbine connected to the motor via a rotational shaft. The turbine includes a stationary vane provided upstream of a turbine wheel in a refrigerant flow path. A casing includes a partition part configured to partition the motor and the refrigerant flow path of the turbine. The partition part is provided with a heat insulating mechanism, and the stationary vane is fixed to a shroud-side flow path wall part.SELECTED DRAWING: Figure 2

A hydrocarbon stream is reformed in the presence of oxygen and steam to produce a syngas stream. A hydrogen stream is separated from the syngas stream. The hydrogen stream is combusted to produce a steam stream. The steam stream is flowed to a turbine wheel of an electric generator, thereby causing the steam stream to expand while flowing across the turbine wheel and the turbine wheel to rotate. The electric generator generates electrical power in response to rotation of the turbine wheel. In this way, hydrogen produced by reforming can be utilized as a clean fuel source for cogeneration to produce useful heat and electricity while simultaneously decreasing the carbon footprint of the process.

The subject matter of this specification can be embodied in, among other things, a subsea energy recovery system for generating electric power that includes an inlet flow line configured to couple to a subsea tree of a subsea gas well to receive gas produced from the subsea gas well, and a subsea electric power generation system, the subsea electric power generation system configured to reside subsea on a subsea production site of the subsea gas well and including a turbine wheel configured to rotate in response to expansion of the gas, a rotor configured to rotate with the turbine wheel, a stationary electric stator, the rotor and electric stator defining an electric generator configured to generate current, and a hermetically sealed housing enclosing the turbine wheel, the rotor, and the electric stator and hermetically sealed inline in the first flow line.

A turboexpander with a turbine wheel coupled to drive a generator in response to a flow of incoming gas. A housing assembly of the turboexpander defines a sealed space, sealed from the incoming gas. The sealed space is in fluid communication with a surface of the turbine wheel such that pressure in the sealed space acts on the turbine wheel. A bypass passage communicates pressure between the sealed space and a space in communication with an outlet of the turbine wheel. The bypass passage includes an changeable flow area to control the communication of pressure between the sealed space and the outlet of the turbine wheel.

A working fluid circulates through a heat pump cycle in a first direction. Heat is transferred from a first environment to a working fluid. The working fluid is pressurized by a compressor. Heat is transferred from the working fluid to a second environment different from the first environment. A first portion of the working fluid is flowed through a throttle valve. A second portion of the working fluid is flowed to a turbine wheel of a flow-through electric generator. Electrical power is generated by the generator in response to the second portion of the working fluid flowing across the turbine wheel. The working fluid can circulate through the heat pump cycle in a second direction opposite the first direction. Regardless of whether the working fluid flows through the heat pump cycle in the first or second directions, impellers of the generator rotate in the same direction.

Flow from a gas well is conditioned prior to a production pipeline. A flow line is coupled to a gas well to receive the gas and coupled to a production pipeline to direct the received gas away from the production site, the flow line residing at a production site and comprising an electric power generation system. The electric power generation system has a turbine generator. The inlet nozzle and turbine wheel of the turbine generator is configured to reduce the pressure and temperature of the received gas to conditions associated with the production pipeline.

There is provided a turbine for a turbocharger, comprising: a turbine inlet passage configured to receive exhaust gas from an internal combustion engine, the exhaust gas received by the turbine inlet passage defining a turbine bulk flow; a turbine wheel chamber configured to receive the turbine bulk flow from the turbine inlet passage, the 5 turbine wheel chamber configured to contain a turbine wheel supported for rotation; a turbine outlet passage configured to receive the turbine bulk flow from the turbine wheel chamber, the turbine outlet passage being at least partially defined by a turbine outlet passage surface and defining a centreline; an auxiliary passage configured to receive a portion of the turbine bulk flow, the portion of the turbine bulk flow received by 10 the auxiliary passage defining an auxiliary flow; and a dosing module configured to deliver a spray of aftertreatment fluid into the turbine outlet passage; wherein the auxiliary passage is configured to direct the auxiliary flow along the turbine outlet passage surface in an auxiliary flow layer.

An example turbocharger includes a turbine impeller, a rotation shaft fixed to the turbine impeller, a motor having a rotor located on the rotation shaft, and a stator located around the rotor. The stator includes a stator core, an insulator located around the stator core. The insulator includes an element pocket, a coil wound around the insulator. The coil includes a first coil end and a second coil end, and a temperature sensing device configured to detect a temperature of the coil. The temperature sensing device is located in the element pocket and hold by the element pocket.

The invention provides an electric auxiliary supercharger rotor structure with a motor arranged outside the supporting span of a floating ring bearing. The electric auxiliary supercharger rotor structure comprises a turbine impeller, the floating ring bearing, a rotating shaft, a thrust spacer sleeve, a shaft sealing sleeve, a motor magnetic rotor, a compressor impeller and a shaft end nut. The compressor impeller has the beneficial effects that the compressor impeller adopts the impeller with the small length-diameter ratio, and the ratio of the axial length of the impeller to the outer diameter of the impeller is smaller than 0.25 while the performance requirement of a supercharger is met, so that the axial length of a rotor structure is shortened, vibration generated when a rotor runs is restrained, and the reliability of the rotor structure is improved.

There is disclosed a method of operating an exhaust system for receiving exhaust gas from an internal combustion engine. The exhaust system comprises: a turbine, a dosing module, at least one of a variable geometry mechanism and a bypass control valve, and a controller. The turbine is configured to receive exhaust gas from the internal combustion engine. The turbine comprises a turbine wheel configured to extract energy from the exhaust gas. The dosing module is configured to deliver an aftertreatment fluid to the exhaust gas at a position downstream of the turbine wheel. The variable geometry mechanism is configured to control the flow of exhaust gas delivered to the turbine wheel. The bypass control valve is configured to bypass a portion of the exhaust gas from a position upstream of the turbine wheel to a position downstream of the turbine wheel. The controller is configured to execute the method, the method comprising: determining a current property of the exhaust gas at a position downstream of the turbine wheel; determining a difference between the current property of the exhaust gas at the position downstream of the turbine wheel and a reference property of the exhaust gas at the position downstream of the turbine wheel; and in response to the difference, adjusting the at least one of the variable geometry mechanism and the bypass control valve.

The utility model relates to fan transmission system technical field, and disclose a kind of assembly impeller, including impeller and main shaft, the detachable connection between the impeller and main shaft, at least two symmetrical distribution's protruding tooth is processed in the main shaft end face;The recess matched with the protruding tooth is opened in the impeller body end face, and torque is transferred by the side surface contact of the protruding tooth and recess;The utility model is matched by protruding tooth and recess, and contact area is big, can effectively disperse torque, reduce local stress concentration;Symmetrical distribution's protruding tooth makes stress more balanced, avoids the local failure caused by structural deviation.

A supercharger includes a turbine wheel, a turbine housing, and a connection pipe. The connection pipe includes a partition wall that separates an inside of the connection pipe into a first passage and a second passage. When a cross section orthogonal to a rotation axis of the turbine wheel is observed, a line segment that extends from a top end of the partition wall toward an upstream in a flow direction of exhaust gas and that defines a boundary of the first passage and the partition wall is a first downstream side line segment. A line segment that extends from the top end of the partition wall toward the upstream in the flow direction of the exhaust gas and that defines a boundary of the second passage and the partition wall is a second downstream side line segment. The first downstream side line segment is parallel to the second downstream side line segment.

A micro-turbine system (10) includes a combustor (12) defining an inlet (14) for receiving oxidizing agent, a combustion chamber (16) for combusting the fuel and the oxidizing agent, and an outlet (18) for expelling exhaust gas. The micro-turbine system (10) also includes a turbine machine (20) including a bearing housing (22) defining a bearing housing interior (24) and a lubricant passageway (26), a turbine housing (28) coupled to the bearing housing (22) and defining a turbine housing interior (30), a turbine wheel (32) disposed in the turbine housing interior (24), rotatable about an axis, and in fluid communication with the outlet (18) of the combustor (16). The turbine machine (20) also includes a shaft (34) rotatable with the turbine wheel (32) about the axis, a bearing arrangement (36) disposed about the shaft (34), and an electric machine (38) disposed about the shaft (34) and configured to convert rotational motion of the shaft (34) to electrical energy. The micro-turbine system (10) further includes a restriction valve (40) configured to increase a pressure in the bearing housing interior (24).

The invention relates to the technical field of energy recovery and power engineering, and discloses a cantilever type saturated steam turbine and a using method thereof.The cantilever type saturated steam turbine comprises a cantilever type turbine unit, the cantilever type turbine unit comprises an installation outer shell and a turbine wheel disc assembly installed in the installation outer shell, and the turbine wheel disc assembly is connected with a rotor main shaft; the turbine wheel disc assembly comprises a turbine impeller and a turbine blade piece installed on the turbine impeller. The water catching assembly comprises a water collecting ring and a water draining cavity formed in one side of the water collecting ring, and a water collecting groove is formed in the side edge of the water collecting ring; a mounting bearing is mounted on one side of the cantilever type turbine unit, a gear box is connected to one side of the cantilever type turbine unit, and a condenser is connected to the cantilever type turbine unit; the problems that in the prior art, the structure is complex, cost is high, blade erosion is serious, efficiency improvement is limited, meanwhile, the equipment size is large, starting is complex, the response speed is low, and the waste heat recovery temperature lower limit is low are solved.

A hydrodynamic-mechanical power transmission device includes: an input shaft; an output shaft; a basic transmission configuration including a hydrodynamic converter and a superimposition transmission, the hydrodynamic converter including a pump impeller and a turbine wheel, the superimposition transmission being formed as a planetary transmission including a ring gear, a first sun gear, and a planet carrier with a plurality of planetary gears, the input shaft being connected to the pump impeller and the ring gear, the turbine wheel being connected to the first sun gear, the output shaft being connected at least indirectly to the planet carrier; and an additional transmission stage, which is arranged in a direction of a power transmission between the superimposition transmission and the output shaft, the additional transmission stage including an input and an output, the input being connected to the planet carrier, the output being connected to or forming the output shaft.

This turbine comprises: a turbine wheel; a turbine housing that rotatably accommodates the turbine wheel and defines an annular nozzle flow path on an outer peripheral side of the turbine wheel; a plurality of long nozzle vanes that are provided offset in a circumferential direction so as not to overlap in a radial direction in the nozzle flow path; and a short nozzle vane that is provided between two long nozzle vanes which are adjacent to each other in the circumferential direction among the plurality of long nozzle vanes, and in which the length of a straight line connecting a front edge and a rear edge of the short nozzle vane is shorter than that of the long nozzle vane. The short nozzle vane is provided on a front-edge circumscribed circle that passes through the front edge of each of the two long nozzle vanes which are adjacent to each other in the circumferential direction.

A turbine (T) is provided with: a turbine wheel; a plurality of nozzle blades that are disposed on the outside in the radial direction of the turbine wheel, are spaced apart in the circumferential direction of the turbine wheel, and are provided so as to be rotatable about a rotation axis along the axial direction of the turbine wheel; an annular member (drive ring (107)) that extends in the circumferential direction and is provided so as to be rotatable in conjunction with the plurality of nozzle vanes; and an engagement part (107c) which has a thickness greater than the thickness of the peripheral portion of the circular ring member, is provided on the circular ring member, and includes a pair of sliding surfaces (107d) facing each other in the circumferential direction, the engagement part (107c) being slidably engaged with a drive member (link plate (111)) rotationally driven by an actuator.

A method for controlling a gear change in response to a change in a driving mode, the method comprising: (a) determining a maximum number of permissible low gearshift steps according to a result of determining a state of a transmission based on information about an accelerator pedal operation (a signal from an accelerator pedal position sensor (APS; 20)) when a request to change a driving mode to a sport mode is detected during driving, (b) calculating a turbine wheel speed expected immediately after the gear change for each stage included in the maximum number of permissible low gear shift stages using a current speed of an output shaft of the transmission and a gear ratio of each stage, and comparing the calculated expected turbine wheel speed (a speed of an input shaft of the transmission) with a preset permissible turbine wheel speed for each stage, (c) setting the lowest gear shift step from gear shift steps for which the expected turbine speed and the permissible turbine speed satisfy a predetermined condition, such that it is a target gear shift step within the maximum number of permissible low gear shift steps, and (d) executing a gear shift control to downshift a current gear shift stage to the target gear shift stage, wherein in (a) determining the maximum number of permissible low gearshift steps, if an output signal of an APS (20) is at or above a set value at a time when the request to change the driving mode is detected, it is determined that the transmission is in an engaged state, and if the output signal of the APS (20) is below the set value, it is determined that the transmission is in a disengaged state, wherein, when the transmission is in the engaged state, the number of low gearshift steps lower than a set gearshift step determined via a gearshift pattern associated with a sport mode is determined as the maximum number of permissible low gearshift steps, and when the transmission is in the disengaged state, the maximum number of permissible low gearshift steps is determined as 1, such that a low gearshift is only possible to a low gearshift step (a set gearshift step number minus 1) that is one step lower than the set gearshift step determined via the gearshift pattern associated with the sport mode.

A pipeline-integrated power generation system for remote oil and gas sites is disclosed. The system utilizes a flow-through generator with contactless magnetic coupling to eliminate shaft seals and dynamic penetrations. The system comprises a pipeline with a flow restriction device creating pressure differential, branch and return lines routing pressurized fluid through the flow through generator, and a sealed housing defining pressurized and atmospheric portions separated by a non-magnetic generator wall. A turbine wheel, shaft, and permanent magnets operate within the sealed portion, while external windings in the unsealed portion generate electricity through magnetic coupling across the generator wall. The contactless design eliminates leak paths, reduces maintenance requirements, and provides zero-emission power generation from existing pipeline flow. The sealed, self-contained design minimizes maintenance and enhances durability, suitable for remote locations.

A turbomachine includes a rotating set with a turbine wheel. The turbomachine also includes a casing that houses the rotating set, where the casing defines a turbine outlet passage for exhausting air from the turbine wheel. The turbine outlet passage points in a downstream direction along an axis of the turbine outlet passage. The turbomachine includes an air bearing system with at least one bearing component that supports the rotating set for rotation relative to the casing. The air bearing system includes a bearing cooling path that is fluidly connected to the at least one bearing component and has a bearing air line outlet. The bearing air line outlet is fluidly connected to the turbine outlet passage and points in the downstream direction along the axis.

A hydrocarbon stream is reformed in the presence of oxygen and steam to produce a syngas stream. A hydrogen stream is separated from the syngas stream. The hydrogen stream is combusted to produce a steam stream. The steam stream is flowed to a turbine wheel of an electric generator, thereby causing the steam stream to expand while flowing across the turbine wheel and the turbine wheel to rotate. The electric generator generates electrical power in response to rotation of the turbine wheel. In this way, hydrogen produced by reforming can be utilized as a clean fuel source for cogeneration to produce useful heat and electricity while simultaneously decreasing the carbon footprint of the process.

Motor vehicle drive train with an internal combustion engine (250) designed as a 3-cylinder engine, which has a maximum engine torque M mot,maxand having an engine output shaft or crankshaft (18) and a transmission input shaft (66), and having a torque converter device (1) which has a converter housing (16) which is coupled, in particular in a rotationally fixed manner, to the engine output shaft or crankshaft (18), wherein this torque converter device (1) has a converter lock-up clutch (14), a torsional vibration damper (10) and a converter torus (12) formed by a pump wheel (20), a turbine wheel (24) and a stator wheel (22), wherein the torsional vibration damper (10) further has a first energy storage device (38) which has one or more first energy stores (42), and a second energy storage device (40) which has one or more second energy stores (44) and which is connected in series with the first energy storage device (38),and wherein between said first (38) and said second energy storage device (40) a first component (46) is provided which is connected in series with said two energy storage devices (38, 40), and wherein the turbine wheel (24) has an outer turbine shell (26) which is connected in a rotationally fixed manner to the first component (46), wherein the torque converter device (1) further has a third component (62) which is coupled, in particular in a rotationally fixed manner, to the transmission input shaft (66), which is in particular adjacent to the torque converter device (1), and is connected in series with the second energy storage device (40) and the transmission input shaft (66), so that a torque can be transmitted from the second energy storage device (40) to the transmission input shaft (66) via the third component (62),wherein, when a torque is transmitted via the first component (46), a first mass moment of inertia J1 counteracts a change in this torque transmitted via the first component (46), and wherein, when a torque is transmitted via the third component (62), a second mass moment of inertia J2 counteracts a change in this torque transmitted via the third component (62), characterized in that the spring rate c1 [in the unit Nm / °] of the first energy storage device (38) is greater than or equal to the product of the maximum engine torque M, mot,max [in the unit Nm] of the internal combustion engine (250) and the factor 0.03 [1 / °] and less than or equal to the product of the maximum engine torque Mmot,max [in the unit Nm] of the internal combustion engine (250) and the factor 0.05 [1 / °], and that the spring rate c2 [in the unit Nm / °] of the second energy storage device (40) is greater than or equal to the product of the maximum engine torque M mot,max[in the unit Nm] of the internal combustion engine (250) and the factor 0.06 [1 / °] and is less than or equal to the product of the maximum engine torque M mot,max [in the unit Nm] of the internal combustion engine (250) and the factor 0.1 [1 / °], and that the spring rate c1 [in the unit Nm / rad] of the first energy storage device (38) and the spring rate c2 [in the unit Nm / rad] of the second energy storage device (40), on the one hand, and the first mass moment of inertia J1 [in the unit kg*m 2 ], on the other hand, the quotient formed is greater than or equal to 9993 N*m / (rad*kg*m 2 ) and less than or equal to 27758 N*m / (rad*kg*m 2 ); and that the spring rate c2 [in the unit 1 / rad] of the second energy storage device (40) and the spring rate c GEW [in the unit 1 / rad] of the transmission input shaft (66), on the one hand, and the second mass moment of inertia J2 [in the unit kg*m 2], on the other hand, the quotient formed is greater than or equal to 789568 N*m / (rad*kg*m 2 ) and less than or equal to 3158273 N*m / (rad*kg*m 2 ) is.

The controller executes acquisition process for acquiring a parameter correlated with a back pressure which is a pressure in the exhaust pipe upstream of a turbine wheel of the turbocharger, determination process for determining whether the back pressure is higher than or equal to a predetermined pressure based on the acquired parameter, and overlap limitation process for limiting a valve overlap amount between an intake valve and an exhaust valve of the internal combustion engine when it is determined that the back pressure is higher than or equal to the predetermined pressure. The overlap limitation process is a process of changing the valve closing time of the exhaust valve such that the valve overlap amount becomes smaller than that before the overlap limitation process is executed.

It helps to suppress the decline in reliability. [Solution] The supercharger 1 comprises a turbine housing 21 that houses a turbine impeller 22, a bearing housing 41 that rotatably supports a rotating shaft 11 to which the turbine impeller 22 is fixed, a nozzle plate 52 facing the turbine housing 21, and a fixed nozzle unit 5 having a plurality of nozzle vanes 51 arranged around the turbine impeller 22 and fixed to the nozzle plate 52, and a rotation restricting part 6 including a pin 61 and a pin insertion part 62 into which the pin 61 is inserted for restricting the position of the fixed nozzle unit 5 along the circumferential direction. The turbine housing 21 is provided with a pin 61. The nozzle plate 52 is provided with a pin insertion part 62.