Abstract: An electric fluid pump includes a casing, a rotor arranged in the casing, and a shaft member supported by the casing and including a shaft portion extending in the casing in a direction of an axis of the shaft member, having a first end portion arranged at one axial end of the shaft member and a second end portion arranged at the other axial end of the shaft member, and supporting the rotor, a collar portion arranged at the first end portion of the shaft portion and embedded in the casing, and a stepped section arranged between the shaft portion and the collar portion, positioned closer to the second end portion of the shaft portion than the first end portion of the shaft portion, and configured to have an end face facing the second end portion and serving as a bearing surface on which the rotor is rotatably supported.

Abstract: An axial flow fan includes a blade having a curved portion formed in the vicinity of a radially outer end portion positioned opposite to the base portion in the radial direction of the peripheral wall portion of the hub. The curved portion is convex in the rotation direction, concave in the direction opposite to the rotation direction, and extends along the radially outer end portion of the blade. The curved portion extends from a rear end edge of the blade, positioned on a side where one end of the base portion of the blade is positioned, and extends in the radial direction of the hub to the vicinity of a front end edge of the blade, positioned on a side where the other end of the base portion of the blade is positioned and extending in the radial direction.

Abstract: A wind-driven electric plant comprises an annular inlet shell and an annular outer shell with the cross-section of its inside surface being shaped as a circle. The annular shell accommodates a turbine in a coaxial relation thereof. Kinematically coupled with the turbine is a mechanism for converting mechanical energy. At least a portion of an outside surface of the inlet shell is shaped in cross section as a regular polygon. A radius of the regular polygon defining the cross section of the outside surface of the inlet shell at an inlet of the latter is not less than 0.55 and not more than 0.95 of a circumradius defining the cross section of the inside surface of the outer shell in a minimum section thereof.

Abstract: A serial fan includes a frame, a plurality of rotor vanes, a support connected to the frame through a plurality of connecting parts. The plurality of rotor vanes are arranged in series in the frame along an axial direction and the plurality of connecting parts are disposed therebetween to minimize space occupied by the serial fan in the axial direction, and effectively increase the blast pressure.

Abstract: In one exemplary implementation, an assembly may include two indexed parts. A first part may have a void formed therein and an axis, with the void defining at least one rotational stop and at least one radial stop. A second part may have a projection that is received at least partially in the void when the first and second parts are assembled together. The projection may have at least one rotational abutment surface adapted to engage said at least one rotational stop to limit relative rotation between the first and second parts, and the projection having at least one radial abutment surface adapted to engage said at least one radial stop to limit relative radial movement between the first and second parts in a direction away from the axis.

Abstract: Disclosed are systems and method that generally relate to the capture of wind energy by small wind turbines mounted on buildings with gabled roofs. Wind energy harnessing system for gabled roof buildings having a roof ridge including a low silhouette visually appealing enclosure mounted along the roof ridge of a building and extending down both sides of the roof forming the ridge. The enclosure includes airflow guides defined by columns extending down a length of both sides of the building roof forming sidewalls and a roof formed of pivoting louvers above the columns. A paddle-wheel type wind turbine consists of a multiple-bladed cylindrical shaft that contacts the wind and provides rotational work mounted within the enclosure and a generator connected to the wind turbine for converting the rotational work from the wind turbine to electrical energy. The enclosure for the wind turbine functions to capture wind and directs the airflow via the airflow guides before it reaches the ridge.

Abstract: An assembled fan frame suitable for a case body includes a framework, a plurality of first assemblies, a back slab, and a plurality of second assemblies. The framework includes a fixing slab, a first side wall and a second side wall facing each other, and an accommodation space is defined to accommodate at least one fan module. The fixing slab has at least one first vent and a plurality of first assembling holes which are disposed around the first vent. The first assembly is disposed through the first assembling hole and fastens the fan module on the fixing slab. The back slab is vertically mounted on a surface of the case body and faces the fixing slab. The back slab includes at least one second vent and a plurality of second assembling holes. The second assembly is disposed through the second assembling hole and detachably fixes the framework on the back slab.

Abstract: A locking and fixing device for a heat shield element, which heat shield element can be arranged along a heat shield row axially directly next to at least one blade provided in a blade row and has, axially facing the blade, at least two projections of rib-like design which are spaced apart in the circular circumferential direction, are raised above a side wall section facing the blade and define a clear intermediate space which extends in the circular circumferential direction and into which a locking lug provided on the blade can be fitted. Further disclosed is at least one rib-like projection, on its side facing away from the clear intermediate space, providing an extension which extends in the circular circumferential direction, is connected to the projection and the side wall section and rises above the side wall section at most up to the rib height of the projection.

Abstract: A wind-powered pneumatic engine including one or more impeller chambers and one or more impellers disposed in the impeller chambers is provided. One or more air inlets for receiving external wind resistance airflow are disposed on the impeller chambers, and the external wind resistance airflow entering the air inlets drives the impellers to operate to generate power output. The wind-powered pneumatic engine further includes an air-jet system for jetting HPCA into the impeller chambers, and the internal high-pressure compressed air jetted by the air-jet system in conjunction with the external wind resistance airflow entering the air inlets drives the impellers to operate to generate power output. In the present invention, the external resistance airflow around a motor vehicle moving at a speed is converted into power for use, which greatly reduces energy consumption and improves the moving speed of a motor vehicle. A motor vehicle equipped with wind-powered pneumatic engine is also provided.

Abstract: A system for aligning a shell of a rotary machine with a standard along an axial centerline and a transverse centerline of the rotary machine includes a pair of generally L-shaped hooks on the shell; a generally T-shaped member comprising a base, a post, and a cross member provided to the standard; a pair of axial gib keys provided on opposing sides of the cross member, at least one of the axial gib keys configured to engage at least one of the L-shaped hooks and the other being configured to engage the shell; and a pair of transverse gib keys provided on opposing sides of the post, each transverse gib key configured to engage a respective L-shaped hook.

Abstract: The present invention relates to a pump arrangement (10) having a housing (12) and cover (14). The housing (12) and cover (14) form part of a pump mechanism (16). A first inlet or a housing inlet (26) is formed in the housing (12) and is connected to the pump mechanism (16). A second inlet or a cover inlet (28) is formed in the cover and is connected to the pump mechanism. The cover (14) also has a cover outlet (34) formed in the cover (14) that is connected to the pump mechanism (16) and is where fluid medium such as air flows out of the housing (12) arrangement. The use of two inlets increases the flow efficiency.

Abstract: A gas turbine engine system includes a nacelle having a pressure side and a suction side. A passage extends between the pressure side and the suction side that permits airflow from the pressure side to the suction side. The passage receives turbulent airflow over the nacelle to produce a laminar airflow over the nacelle aft of the passage to thereby reduce drag on the nacelle.

Abstract: A blower (1) has a blow fan (20) provided in a casing (10), a drive device (30) for rotating the blow fan (20), and a blow duct (40) for discharging airflow outside, which the air flow is generated by the rotating blow fan (20), wherein a dust proof cover (60) is attached to a suction inlet (11) formed in the casing (10), and openings (64a, 65a) for drawing outside air are formed in the left and right side faces (64, 65) of the dust proof cover (60), and the left and right side faces (64, 65) are inclined inward in the right-and-left width direction as they extend downward. According to such a configuration, the openings (64a, 65a) of the dust proof cover (60) are prevented from being clogged with dust such as dead leaves to prevent overheating of the drive device (30).

Abstract: The air cycle machine insert and method of repair provides an economical repair of the turbine housing section of an air cycle machine, rather than scrapping the component and replacing with a new section. The toroid shaped insert or liner has a U-shaped cross section, configured to fit closely within the turbine air passage of the air cycle machine. A throat insert is also provided. The existing throat flange extending outwardly over the turbine air passage is removed for installation of the insert. High temperature silicone sealant is preferably placed between the wall of the turbine air passage and the liner, after machining the air passage wall to remove irregularities. The liner is then installed and mechanically secured with one or more rivets, the throat insert is installed to replace the previously removed throat flange, and the repaired turbine housing reassembled with the air cycle machine to complete the repair.

Abstract: A compressor which includes: an inner casing arranged so as to cover a rotor shaft; an outer casing arranged so as to cover the inner casing and forming a fluid flow path around the rotor shaft; and a plurality of struts mounted in the entrance of the fluid flow path and between the inner casing and the outer casing; in which the plurality of struts are arranged in a radial pattern centered on the rotor shaft, and the spacings between the adjacent struts in the circumferential direction of the rotor shaft are unequal.

Abstract: A gas turbine transition duct is provided comprising a generally tubular main body having first and second ends, the first end being adapted to be positioned adjacent to a combustor unit and the second end being adapted to be positioned adjacent to a turbine and a collar coupled to the main body second end. The collar may have upper, lower and side portions. At least one of the side portions may be provided with a notched section.

Abstract: A method of joining a first article to a second article using adjustment features located in an assigned scrap portion of the first article. The first article can be a casing for a turbine engine the first article being the casing skin and the second article a flange. The adjustment features are springs that can be stretched to increase the circumference of the skin. Following the correct sizing of the skin and joining to the flange the attachment features are removed along with the assigned scrap portion of the skin.

Abstract: A combustor device and transition duct assembly is provided for use in a gas turbine engine. The combustor device comprises combustor structure having an exit portion; spring clips mounted to the exit portion of the combustor structure; and a burner assembly. The transition duct comprises a conduit having inlet and outlet sections and an abradable material layer provided along a circumferential portion of the inlet section of the transition duct conduit. The transition duct conduit inlet section may be coupled to the combustor structure exit portion such that the spring clips engage the abradable material layer.

Abstract: A transition duct assembly for a gas turbine engine includes an outer diameter surface and an inner diameter surface. A substantially annular flowpath having a radial offset is defined between the inner diameter surface and the outer diameter surface. A curvature distribution of the inner diameter surface includes a first region of increasing slope in a radial direction and a second region of decreasing slope in the radial direction adjacent to and downstream of the first region. The first and second regions are configured to reduce flow separation along the outer diameter surface of fluid traveling along the substantially annular flowpath.

Abstract: A transition duct for routing a gas flow from a combustor to the first stage of a turbine section in a combustion turbine engine is disclosed. The transition duct may have an internal passage extending between an inlet to an outlet. An axis of the transition duct body may be generally linear such that gases expelled from the transition duct body flow in a proper direction into the downstream turbine blades. The linear transition duct may include an outlet with exhaust mouths that are configured such that sides of the transition duct are coplanar with adjacent transition ducts, thereby eliminating destructive turbulence between adjacent, linear transition ducts.

Abstract: A transition duct for routing a gas flow from a combustor to the first stage of a turbine section in a combustion turbine engine has an internal passage from an inlet to an outlet. The outlet may include canted sides that reduce formation of damaging vibration in downstream turbine blades caused by downstream wake between adjacent transition ducts and by pressure differentials between adjacent transition ducts that include turning sections.

Abstract: A transition duct for routing a gas flow from a combustor to the first stage of a turbine section in a combustion turbine engine is disclosed. The transition duct may have an internal passage extending between an inlet to an outlet. An axis of the transition duct body may be generally linear such that gases expelled from the transition duct body flow in a proper direction into the downstream turbine blades.

Abstract: An air guide mechanism includes a box unit that incorporates a heating element therein; an air fan unit that is disposed within the box unit; and a guide unit that is disposed on a side of the box unit, wherein the guide unit guides the air to a portion of a round area formed due to the rotation of the vane portion from a first direction having an acute angle with respect to an inclination direction of the vane portion corresponding to the portion of the round area, and to an area, which is at least another portion of the round area and in which the first direction intersects at a non-acute angle with an inclination direction of the vane portion, from a second direction having a smaller angle than the non-acute angle.

Abstract: An initial geometry for a nacelle provides an intake at the upstream end of the nacelle and an exhaust at the downstream end of the nacelle. The intake has in flow series, an intake lip and a diffuser. The intake lip has a highlight defining the boundary between the inner and outer surfaces of the intake lip. On all longitudinal sections containing the axis of the engine (i) the inner and outer surfaces are tangency matched at the highlight, and (ii) the inner and outer surfaces have their maximum curvatures at the highlight.

Abstract: A transition duct for a gas turbine includes a tubular body having a forward end and an aft end; a plurality of cooling channels formed on an exterior surface of the tubular body at the aft end; a closure band surrounding the aft end, covering at least a portion of the cooling channels; and a seal attached to the closure band, surrounding the aft end of the tubular body.

Abstract: The present invention provides a method operable to improve pressure recovery and/or distortion within engine inlet. This method involves providing a first fluid flow to primary jet vortex generator(s) operable to inject fluid at a first injection rate into a boundary layer of a primary fluid flow within the inlet. A secondary fluid flow is injected by secondary jet vortex generator(s) at a second injection rate into the boundary layer of the primary fluid flow. The fluid injected at the first injection rate and second injection rate is operable to induce secondary flow structures within the boundary layer. These secondary close structures are then operable to improve or manipulate the pressure recovery of the inlet. At specific engine conditions, this method may redistribute the ratio of the first injection rate and second injection rate in order to improve pressure recovery and/or distortion of the inlet when the particular engine conditions.

Abstract: An aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle includes: a closed-periphery frame comprised of a top, bottom and pair of side walls. A plurality of cooling holes or apertures having elliptical or oval cross-sectional shapes are provided in one or more of the top, bottom and pair of side walls, extending axially through the closed-periphery frame. The cooling holes have major and minor axes arranged such that the major axes are substantially parallel with the top and bottom walls.

Abstract: A device for carrying out an inductive low-frequency or high-frequency pressure welding method for joining metallic components, in particular components of a gas turbine, having at least one generator and at least one inductor, wherein an insulator is situated at least partly between the inductor and the components, in the area of the sections that are to be joined of the components, the insulator being made of a material that, due to its specific properties, does not, or does not significantly, prevent the magnetic interaction between the inductor and the components that are to be joined, and the insulator being situated at a distance from the inductor and the components, and that the insulator is made of high-temperature-resistant quartz glass.

Abstract: A centrifugal pump includes a diffuser section for decreasing a velocity of the fluid discharged from an impeller, a return vane for leading the fluid which has passed through the diffuser section to a discharge side, and a main plate to which the diffuser section and the return vane are fixed.

Abstract: An exemplary multi-piece locating pin for a turbocharger assembly includes a screw piece with a nub and a securing feature to secure the screw piece in a housing of a turbocharger assembly and a pin piece with a receptacle configured to receive the nub and a locating surface to locate a bearing in a bore of the housing. An exemplary turbocharger assembly includes a housing with a bore, a bearing positioned in the bore where the bearing has a wall opening and a multi-piece locating pin secured to the housing and inserted at least partially in the wall opening to axially locate the bearing in the bore. Other exemplary pins, arrangements and methods are also disclosed.

Abstract: A fan system with enhanced air flow-static pressure characteristics and reduced fan noise compared to the related art is provided. The number of duct blades of a duct is the same as the number of stationary blades of an axial flow fan located in front of the duct, and the duct blades correspond to the stationary blades respectively. An end surface of a rear end portion of each stationary blade and an end surface of a front portion of a duct blade corresponding to the stationary blade have the same shape, and they align together and contact each other to form one composite stationary blade, with a discharge port of each axial flow fan communicating with an inlet port of a duct housing located behind the axial flow fan.

Abstract: Disclosed herein is a vibration-absorbing device for blower motors, which is provided between a blower motor and a motor housing surrounding the blower motor. The vibration-absorbing device includes a vibration-absorbing body, which may be spherical, and an engaging depression. The vibration-absorbing body is provided in the blower motor. The engaging depression is formed in the inner surface of the motor housing such that a vibration-absorbing body can be contained therein.

Abstract: A hydroelectric turbine for the production of electricity from tidal flow forces, the turbine having a rotor with an open center such that the blades are mounted between an inner rim and outer rim, wherein retaining members and anti-friction members are provided to limit movement of the rotor relative to the housing in either axial direction, such that water flow in either direction operates the turbine, but wherein the retaining members and the anti-friction members allow the rotor to shift in either axial direction in response to water flow. The anti-friction members limiting rotor travel in the axial direction are preferably of increased thickness, such that as the anti-friction members wear down, the rotor is able to shift relative to the housing in the axial direction.

Abstract: A method of repairing a case for a gas turbine engine includes identifying areas of damage on its internal holding structures in a gas turbine case, and utilizing cold metal transfer to deposit weld material to the internal holding structures.

Abstract: A support member for a compressor having a shell may include a hub receiving a load from the compressor, at least three spokes radially extending from the hub, and at least three attachment locations attaching the at least three spokes to the shell. The support member may further include at least one connecting portion extending between at least two of the at least three spokes to transmit a load between the at least two spokes, whereby the at least one connecting portion is spaced apart and separated from the shell.

Abstract: Embodiments of the present invention generally relate to signal operated tools for milling, drilling, and/or fishing operations. In one embodiment, a mud motor for use in a wellbore includes: a stator; a rotor, the stator and rotor operable to rotate the rotor in response to fluid pumped between the rotor and the stator; and a lock. The lock is operable to: rotationally couple the rotor to the stator in a locked position, receive an instruction signal from the surface, release the rotor in an unlocked position, and actuate from the locked position to the unlocked position in response to receiving the instruction signal.

Abstract: The present invention includes a molten metal pump and associated components that enable gas to be released into a stream of molten metal. The gas may be released into the molten metal stream (preferably into the bottom of the stream) flowing through a passage. Such a stream may be within the pump discharge and/or within a metal-transfer conduit extending from the pump discharge. The gas is released by using a gas-transfer foot that is positioned next to and is preferably attachable to the pump base or to the metal-transfer conduit. Preferably, the conduit (and/or discharge) in which the gas is released comprises two sections: a first section having a first cross-sectional area and a second section downstream of the first section and having a second cross-sectional area, wherein the second cross sectional area is larger than the first cross-sectional area. Preferably, the gas is released into or near the second section so that the gas is released into an area of relatively lower pressure.

Abstract: A housing for use in high-pressure fluid applications, comprising a first passage defining a first axis (P1) and a second passage defining a second axis (P2), wherein the first and second passages intersect at an opening defined by an intersection at one end of the second passage. When sectioned on a plane normal to the second axis (P2) and not intersecting the first passage, the intersection defines an ellipse (E) in the plane and centred on the second axis (P2), the ellipse having a major axis equal in length to the width (D2) of the intersection and a minor axis equal in length to the height (D1) of the intersection. A wall of the intersection describes a curve in the plane, the curve passing through the points where the major and minor axes of the ellipse (E) meet the perimeter of the ellipse (E), and through points which lie outside the ellipse (E) and which are offset from the ellipse (E) by an offset distance (K).

Abstract: A fluid flow machine includes a flow path formed by a casing 1 and a rotating shaft 2, in which rows of blades 3 are provided, with at least one annular groove-type recess 4 being arranged in a blade 3 tip area in an annulus duct wall of the shaft 2. A cross-section and the position of the recess 4 are defined as follows: the axial arrangement is selected such that a partial length A of the recess 4 extends by max. 30 percent of the chord length of a blade 3 from the blade 3 leading edge against the direction of flow, and up to max. 50 percent of the chord length of the blade 3 from the blade 3 leading edge in the direction of flow.

Abstract: A body has a back and parallel front. The back of the body defines an air inlet and a peripheral air outlet is associated with the front. A body chamber between the back and the front is in fluid communication with the air inlet and the air outlet. A structurally prominent faceplate is on the body proximate to the peripheral air outlet and bears a transforming aesthetic overlay. An air displacement unit is formed of a plurality of blades rotatable in a plane parallel with the back and the front. The air displacement unit is substantially concealed within the body chamber and is configured to accept air from the air inlet and urge the air through the air outlet.

Abstract: Implementations of an enhanced axial air mover system address various issues such as drying performance, transportability, storage, use, and assembly. Some implementations include ergonomic positioning of a carrying handle relative to positioning of a fan-assembly to make the system easier to carry. Enclosures with variable diameter profiles increase air flow performance. A floor edge allows for flush positioning of the air mover's outlet to improve flow of air. Various supports and engagement members allow for horizontal and/or vertical engagement of a plurality of the air movers for storage or increased air moving capacity for a given application. An alignment guide assists with positioning of the air mover with respect to a room wall to enhance air flow within the room. A cord retaining system provides an enhanced approach for securing the air mover's electrical cord. Grill guards have slotted ends to assist with assembly of the air mover.

Abstract: A fan includes a fan frame and an impeller. The fan frame includes a frame body and a base, and the impeller is accommodated in the main body and is disposed on the base. The frame body has a column-shaped passage, an airflow outlet and an airflow inlet. The main body further has two expansion portions respectively disposed adjacent to the outlet and inlet. The expansion portions extend from the column-shaped passage to the outlet and the inlet, respectively. The main body has at least two planar sides so as to allow parts of the expansion portions to respectively form straight-cut lines where the planar sides are located, respectively. The base has several straight-cut planes, and each of the straight-cut planes is located with respect to the straight-cut line.

Abstract: A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor.

Abstract: A stackable nacelle for a wind turbine includes a first piece having a top wall and integral first side walls extending at a first obtuse angle from each edge of the top wall; and a second piece, for mating with the first piece, having a bottom wall and integral second side walls extending at a second obtuse angle from each edge of the bottom wall.

Abstract: A turbine casing may include an outer surface with a false flange and an inner surface with a heat sink positioned adjacent to the false flange.

Abstract: The present invention relates to a stator (100-1000) with a profiled helical bore (106,206,306,606,706,806,906,1006) having a cast material layer (102;202;302;602;702;802;902;1002) with transducers (104A-104D;304;604A-604D;710;804;904A-904C;1010) disposed therein and describes the methods of forming such stators. Cast material can be fluidic during displacing of a transducer therein. Cast material layer 202 can include housings (218,222) disposed therein and/or a cavity 226 formed therein. Transducer can be a sensor (104A-104C) and/or an actuator 104D. Transducer 804 can extend axially along a length of the stator 800. Transducer or plurality of transducers (904A-904C) can extend along a helical path. Additionally or alternatively, sleeve 1008 can include a transducer 1010.

Abstract: New hydroelectric turbine devices, systems, and methods, based on recirculation of fluid through at least one turbine, offer the potential for less costly and greater energy output in many applications.

Abstract: A blade is disclosed for use in a wind turbine, with the blade having a longitudinal axis for extending radially outwardly from a center of rotation of the blade on the wind turbine. The blade has a front side with a front surface for orienting in a windward direction and a rear side with a rear surface for orienting in a leeward direction. The blade has a profile taken in a plane oriented substantially perpendicular to the longitudinal axis of the blade. The profile of the blade has a leading edge and a trailing edge. The profile is characterized by a camber ratio, and the camber ratio of the profile is greater than or equal to approximately 4%.

Abstract: Disclosed is a compact and integrated fan, pump, and heat exchanger system where air-cooling is performed via the fan, liquid cooling is performed via a pump, and the drilled pump diffusers act as a heat exchanger. The pump has drilled diffusers through which liquid passes into the volute, the drilled diffusers are streamlined and thus act as fan stator blades. Hot liquid is centrifuged and carried inside the drilled diffusers while air flows around the outside surfaces of the drilled diffusers. A heat transfer occurs where heat transfers from the hot liquid into the air stream.

Abstract: A transition duct assembly with a thermally free aft frame and mounting system for use in a gas turbine engine are disclosed. The aft frame is capable of adjusting to thermal gradients while the mounting system provides for at least transverse movement of the transition duct during engine assembly. The mounting system also provides a means for raising the natural frequency of the transition duct outside of the engine's dynamic excitation ranges.