Serially Spaced In Working Fluid Flow Path Patents (Class 415/66)
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Patent number: 5224817Abstract: Inside a single casing the turbopump comprises a main shaft driven by a turbine, a secondary shaft coaxial with the main shaft, a low pressure impeller mounted on the secondary shaft to create a medium pressure flow which is brought back to flow parallel to the axis of the turbopump by a baffle and which is deflected through 180.degree. in a return channel so as to come back parallel to the axis of the turbopump towards a high pressure impeller mounted on the main shaft inside the secondary shaft. The entire HP centrifugal flow formed by the HP impeller is output via the insides of fixed hollow blades forming a portion of the baffle towards a delivery channel secured to the casing and collecting the high pressure fluid after it has passed through the fixed hollow blades. A shunt channel is taken from the delivery channel to apply a high pressure centripetal flow through the insides of the curved hollow blades forming a portion of the LP impeller, thereby establishing driving torque for the LP impeller.Type: GrantFiled: December 18, 1991Date of Patent: July 6, 1993Assignee: Societe Europeenne de PropulsionInventor: Jean-Philippe Girault
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Patent number: 5197851Abstract: Inside a single casing the turbopump comprises a main shaft driven by a turbine, a secondary shaft coaxial with the main shaft, at least one low pressure boost impeller mounted on the secondary shaft. The LP fluid flow is brought parallel to the axis of the turbopump by a baffle and after being deflected through 180.degree. in a return channel it is returned parallel to the axis of the turbopump toward a high pressure impeller mounted on the main shaft inside the secondary shaft. The entire HP flow formed by the HP impeller is delivered axially to a boost turbine secured to the secondary shaft and to the LP boost impeller and disposed between the main shaft and the secondary shaft. Through orifices and an axial channel are formed in the main shaft to pass the flow of HP fluid leaving the boost turbine inside the main shaft and then to exhaust the HP fluid to a delivery channel secured to the casing through the radial arms situated at the inlet to the turbopump.Type: GrantFiled: December 27, 1991Date of Patent: March 30, 1993Assignee: Societe Europeenne de PropulsionInventor: Jean-Philippe N. Girault
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Patent number: 5078571Abstract: In this multi-cylinder steam turbine, compensation is provided for the axial thermal expansion, from the bearing housing (5) of the medium pressure partial turbine (1), of the low pressure part of the shafting (4) by the low pressure steam feed pipe (15, 16) rigidly connected to the medium pressure partial turbine (1) being rigidly connected to the inner casing (11, 12) of the two-casing low pressure partial turbines (2, 3). Because of the equal temperatures, the part of the shafting (4) mentioned and the low pressure steam feed pipes (15, 16) expand equally so that the axial clearances between the nozzle guide vane and rotor blade rings of the low pressure partial turbines (2, 3) are also substantially retained. The otherwise conventional connecting elements between the medium pressure partial turbines and the low pressure partial turbines with their associated sealing problems on the outer casings disappear.Type: GrantFiled: December 20, 1990Date of Patent: January 7, 1992Assignee: BBC Brown Boveri AGInventor: Pierre Meylan
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Patent number: 5007241Abstract: A kinetic energy recovery device of liquid and gas has a gas guide member and a liquid guide member both being stood, and a vane wheel installed at communicating portion between the gas guide member and the liquid guide member, and at rising of gas in the gas guide member and flowing-down of liquid in the liquid guide member, the vane wheel is supplied with the rotating force and therefore rotated. A generator connected to a rotary shaft of the vane wheel is rotated, and both kinetic energies of the gas and the liquid act simultaneously and the power generation is performed and the energy is recovered. The vane wheel is installed to each of the gas guide member and the liquid guide member, and the rotary shafts of respective vane wheels are interlocked and rotated simultaneously, thereby the generator may be rotated by both kinetic energies of the gas and the liquid.Type: GrantFiled: September 12, 1989Date of Patent: April 16, 1991Inventor: Yutaka Saitou
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Patent number: 4986732Abstract: In a steam turbine having a first turbine element adapted to receive a flow of steam for operating at a first predetermined pressure, the first turbine element including an exhaust protion, a second turbine element adapted to receive the flow of steam for operating at a second predetermined pressure that is relatively lower than the first predetermined pressure, the second turbine element including an inlet portion, a method and apparatus for connecting the inlet portion to the exhaust portion by crossover piping which includes a pair of vaneless turning subsections each of which have a substantially long radius of curvature.Type: GrantFiled: August 3, 1989Date of Patent: January 22, 1991Assignee: Westinghouse Electric Corp.Inventors: Alvin L. Stock, John C. Groenendaal, Jr.
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Patent number: 4830585Abstract: This invention pertains to a system for pumping a fluid of a variable consistency into a fluid container. The system includes a vacuum power assist auger to withdraw fluid upwardly from a reservoir. A hose connecting an outlet end of the power assist auger to a fluid inlet at one end of a booster pump assembly is provided to supply fluid to the fluid inlet. A fluid outlet is provided at another end of the booster pump assembly. The fluid outlet is connected to a loading pipe so that the fluid is forced by the booster pump assembly through the fluid outlet and the loading pipe to the fluid container. A vacuum is created by the booster pump assembly in the hose so that fluid of a variable consistency may be withdrawn easily from the reservoir by the power assist auger and the booster pump assembly.Type: GrantFiled: July 29, 1987Date of Patent: May 16, 1989Inventor: Phillip L. Ruyle
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Patent number: 4661042Abstract: A centrifugal compressor (10/110) or a centripetal turbine (76) having coaxially aligned, relatively rotatable rotors (12,112,212/14,114,214) mounting a plurality of blades (30,32,34,36,38/130/230) having variable radial extension from a central axis (15). The blades closer to the center of rotation of the rotors are operated at high speeds so to maximize their gas treating effect while rotating the larger diameter blades (40,42,44/132,232) at lower speeds commensurate with their stress capabilities.Type: GrantFiled: June 18, 1984Date of Patent: April 28, 1987Assignee: Caterpillar Tractor Co.Inventor: Alexander Goloff
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Patent number: 4472106Abstract: A pump for viscous substances is constructed in such a way that it is constructionally simple and insensitive to foreign bodies. For this purpose, a plurality of shafts which are rotated in the same direction are arranged in a casing. Disks are fitted to the shafts and these disks are substantially clearance-free with respect to the corresponding wall portion of a recess and an adjacent shaft. At least one such disk and at least one adjacent shaft and the associated wall portion of a recess define a chamber. A plurality of such chambers are arranged in series and are interconnected by in each case an overflow duct.Type: GrantFiled: February 23, 1983Date of Patent: September 18, 1984Assignee: Werner & PfleidererInventors: Wilhelm Neubauer, Herbert Ocker
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Patent number: 4400134Abstract: Pumping apparatus for collecting polluted liquids such as oil on water and including a first pumping stage comprising a rotatable annular rotor having curved blades shaped to draw liquid inwardly towards the center of rotation, and stationary blades disposed within the rotor blades to receive liquid into the spacers between them, and a further pumping stage having rotatable blades shaped to receive the liquid from the stationary blades and deliver it under pressure in an upward direction to an outlet. The pumping apparatus may be mounted on a flotation unit which is suitable for collection of oil from the surface of water.Type: GrantFiled: February 17, 1981Date of Patent: August 23, 1983Assignee: Eurotech International LimitedInventor: William T. Sweeney
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Patent number: 4395130Abstract: A novel dual or more interconnected pumping mechanisms pump is provided herein. It comprises a first pumping mechanism within a casing. A first pumping mechanism is provided within the casing, the first pumping mechanism having an operating shaft within the casing, the operating shaft being operated by a motor. The first pumping mechanism has pumping structure so constructed and arranged as exclusively to provide a high pressure, low volume aqueous liquid flow, the first pumping mechanism having axial output. A second pumping mechanism is also provided within the casing, and is in direct liquid flow connection with the first pumping mechanism, the second pumping mechanism also having an operating shaft within the casing, the operating shaft being operated by the same motor. The second pumping mechanism has pumping structure so constructed and arranged as exclusively to provide a low pressure, high volume aqueous liquid flow.Type: GrantFiled: April 1, 1981Date of Patent: July 26, 1983Inventor: Oleh Kutowy
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Patent number: 4252500Abstract: A steam turbine comprising a housing in which there are at least two rotors turning on a common axis in the same direction but at different speeds. The rotors are connected by gearing preferably located externally of the housing. In the preferred form, the faster rotating rotor is driven by steam from a first steam nozzle or nozzles. The adjacent slower rotating rotor is driven by steam from a second steam nozzle or nozzles. Specially arranged vanes on the slower rotor and fixed vanes on the housing enable the expanding steam to react between the first and second rotors and the second rotor and the housing to obtain the desired power output from the steam.In a modification, the second rotor has ports therethrough which extend diagonally backward and outward from the interior side of the second rotor to the exterior side so that some of the steam from the first steam nozzle if of higher pressure can pass through the diagonal ports to engage the fixed vanes on the housing.Type: GrantFiled: October 26, 1979Date of Patent: February 24, 1981Inventor: Clyde F. Berry
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Patent number: 4249858Abstract: A steam turbine having side by side rotors within the turbine housing, one rotor fixed to the turbine shaft and the other rotor free to rotate on the turbine shaft. The fixed rotor has a single set of vanes, the freely rotatable rotor has two sets of vanes, one set being adjacent the vanes of the fixed rotor and the other set adjacent a fourth set of vanes integral with the housing. One steam nozzle delivers steam against the vanes on the fixed rotor and a second steam nozzle delivers steam against the set of vanes on the second rotor that are adjacent the fixed vanes on the housing. The steam pressure is controlled so that steam from the nozzles will drive the fixed rotor and shaft at a selected speed which may be faster or slower than the speed of the freely rotatable rotor. The freely rotatable rotor may include reversely directed apertures permitting steam from the first nozzle to flow outwardly to act against the fixed vanes on the housing.Type: GrantFiled: December 10, 1979Date of Patent: February 10, 1981Inventor: Clyde F. Berry
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Patent number: 4219306Abstract: The impellers of two rotary compressors are respectively fixed to the opposite ends of each shaft of a plurality of shafts, the compressors being connected in succession by connecting pipes to constitute a single multistage combination of the compressors in successive compression stages, the impeller of the preceding stage of the impellers on each shaft having a gas exit flow angle which is less than that of the impeller of the succeeding stage thereby to cause the specific speed of each impeller to be at its optimal value.Type: GrantFiled: March 2, 1979Date of Patent: August 26, 1980Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshikazu Fujino, Yoshiaki Daido
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Patent number: 4201512Abstract: The staging or compounding of drag-type turbines having a high energy input is herein accomplished by disposing successive stages of a drag turbine in radially offset relation, i.e., nested relationship with nozzles between radially displaced stages mounted either in fixed spatial position or mounted for rotation with the upstream rotor and providing either like or opposite directions of rotation of successive stages. The successive radial stages of the present invention are separately coupled to coaxial drive shafts which, in turn, may be appropriately coupled to rotary output means in a conventional manner to provide the output power and high efficiency of the multistaged turbine.Type: GrantFiled: August 23, 1977Date of Patent: May 6, 1980Assignee: Cerla N.V.Inventors: Chester W. Marynowski, F. Michael Lewis, Charles E. Lapple, Robert G. Murray, Konrad T. Semrau
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Patent number: 4165848Abstract: A fluid flow device comprises a rotor housed in a casing having slot-like intake and outlet openings. Groups of such devices can be used to form an aircraft propulsion system by drawing-in air from above through the intake openings and forcing the air downwardly through the outlet openings to provide lift and horizontal thrust, the effect being similar to that produced by the wing of a bird.Type: GrantFiled: July 28, 1977Date of Patent: August 28, 1979Inventor: Alfredo Bizzarri
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Patent number: 4105372Abstract: According to the present invention, fluid rotary machines including a turbo-compressor, turbo-desiccator, turbo-refrigerator, turbo-generator and the like are of such an arrangement that supporting shafts corresponding to impellers in number and a gear train changing R.P.M. of said supporting shafts to the optimum R.P.M. of the impellers mounted on said supporting shafts are provided, so that the respective impellers can operate at the optimum R.P.M. individually.Type: GrantFiled: January 20, 1976Date of Patent: August 8, 1978Assignee: Hitachi, Ltd.Inventors: Haruo Mishina, Kazuhiro Sunobe, Kunio Fujie
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Patent number: 4087197Abstract: The compressor, as evidenced in the several embodiments presented herein, comprises, in its essentials, a self-contained gear housing which, centrally thereof, receives a power input shaft for driving a bull gear. The bull gear drives either one or a plurality of other gears which, in turn, are coupled to one or a complementary plurality of gas compressing impellers. Integral with the outer wall of one side of the gear housing is defined one or a same plurality of gas handling structures within which the impeller(s) are confined. The gas handling structures comprise inlet pipes, compression chambers, diffusers and open-ended plenum chambers. According to the requirements of the user, domed enclosures are replaceably bolted to the gas handling structure either directly, or through intervening inter- or after-cooler heat exchangers, and with inter-stage ducting, to define of the gas compressor either a single compressing stage, a plurality of independent stages, or successive, series-coupled compressing stages.Type: GrantFiled: September 7, 1976Date of Patent: May 2, 1978Assignee: Ingersoll-Rand CompanyInventor: Ronald L. Haugen
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Patent number: 4037983Abstract: Wind motor comprising one or more sets of rotors, arranged each to project outwardly with respect to the adjacent one in the direction of the wind, such that only the useful part of the subsequent rotor is exposed to the wind flow. The vertical axis rotors are, in aligned arrangement on oblique V-like extending radial arms, pivotally mounted to a common and fixed vertical shaft for self-orientation in the direction of the wind and for angular self-adjustment by bringing the "V" arranged arms closer to each other.Type: GrantFiled: March 30, 1976Date of Patent: July 26, 1977Inventor: Rolando Poeta
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Patent number: 3961485Abstract: A method and apparatus for generation of power wherein a first fluid is compressed and accelerated within radially oriented rotor passages with accompanying temperature increase during said compression, wherein heat is transferred into a second fluid also being accelerated but which has a lesser temperature increase, and wherein both fluids are then decelerated and expanded with release of work. Two rotors are used, with said second fluid being expanded either partially or fully within the second rotor. Suitable heat exchangers are provided within the rotors for adding heat into said first fluid and removing heat from said second fluid; also, a cooling heat exchanger may be provided within the passages for said first fluid. The heat transfer from first fluid to second fluid occurs in areas near the rotor periphery, and the cooling and heat addition heat exchangers are located generally inward toward rotor center from said heat exchangers near said rotor periphery.Type: GrantFiled: June 16, 1975Date of Patent: June 8, 1976Inventor: Michael Eskeli
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Patent number: 3945756Abstract: Disclosed is a centrifugal pump having a housing, an input and an output port, and a driven impeller. Surrounding the impeller is a turbine means which serves to retrieve at least part of the kinetic energy imparted by the impeller to the pumping medium. The energy retrieved by the turbine means can be used to apply additional power to a prior auxiliary stage, an after auxiliary stage, or back to the original impeller itself. In this manner, the turbine retrieves kinetic energy which might otherwise be wasted and, therefore, the turbine improves the overall efficiency of the pump. Stationary flanges at the discharge end of the pump jacket serve to convert the remaining curvilinear motion of the water column into a non-revolving column of water. The stationary flanges also help to avoid a drop in the operating pressure at the discharge end of the jacket.Type: GrantFiled: November 14, 1973Date of Patent: March 23, 1976Inventor: Paul F. Ikenberry