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WO2010011158A1 - Accélérateur d’écoulement (options) - Google Patents

Accélérateur d’écoulement (options) Download PDF

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Publication number
WO2010011158A1
WO2010011158A1 PCT/RU2009/000238 RU2009000238W WO2010011158A1 WO 2010011158 A1 WO2010011158 A1 WO 2010011158A1 RU 2009000238 W RU2009000238 W RU 2009000238W WO 2010011158 A1 WO2010011158 A1 WO 2010011158A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
circle
polyhedron
plane
circles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/RU2009/000238
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English (en)
Inventor
Boris Viktorovich Avdeev
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2010011158A1 publication Critical patent/WO2010011158A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/04—Wind motors with rotation axis substantially parallel to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • F05B2240/13—Stators to collect or cause flow towards or away from turbines
    • F05B2240/133—Stators to collect or cause flow towards or away from turbines with a convergent-divergent guiding structure, e.g. a Venturi conduit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • This invention relates to technical means used in aerodynamics and hydrodynamics for controlling the flow velocity of fluid media and can be used in the power industry and in other technical fields for controlling the flow velocity of fluid media.
  • RU Patent 2281883 is an air braking device comprising nozzles and technical means for obtaining the desired properties of air. Said known device is also provided with a means for energy excitation of air; the case of the device contains a vertically installed ascending air flow accelerator consisting of at least two convergent nozzles having a pressure-sealed connection between them; each nozzle is introduced, either rigidly or an with axial degree of freedom, into the next nozzle in sequence to form at least one plane between said two nozzles which plane comprises input valves on its wall and a means for energy excitation of air; the cavities comprise pressure gages; in the top part of said device, the air flow supplied from the accelerator is branched and directed via air ducts towards two or more vertical output nozzles arranged at 180° to the vertical direction and towards one or more horizontal nozzles; air flows supplied from the accelerator can be controlled with the velocity sensors of the device itself in three directions and the flow velocity at the output of all the nozzles; furthermore, the device comprises air duct
  • RU Patent 2059839 is a combustion engine exhaust flow accelerator with an ejector comprising an exhaust pipe connected to the exhaust system via an adapter at one side and extending to the atmosphere through a pipe bell, and an accelerator unit installed between said adapter and the inner surface of said pipe bell.
  • Said accelerator unit is conical in shape and is installed behind said adapter along the pipe axis, its cone point being co-directed with the exhaust flow; the outer side of said cone has exhaust gas flow channels and additional channels for secondary ejected air, wherein the cross-section shape of said flow channels transforms from triangular to dovetail one as one moves from the cone point to the butt-end, and the triangular cross-sections are obtained by splitting the cross-section area of said flow channels into n sections (n > 2); said ejector is formed by an annual slot between the inner side of said pipe bell at its connection with the cone butt-end and the outer surfaces of said flow channels and said additional channels for secondary ejected air, and said pipe bell is a truncated cone in shape with a rounded front face towards the gas flow direction.
  • said flow channels are arranged helically and connected to the surfaces of said cone, said pipe bell and said adapter.
  • the output cross-section of said pipe bell is typically a Laval nozzle.
  • a combustion engine exhaust flow accelerator with an ejector comprising an exhaust pipe connected to the exhaust system via an adapter at one side and extending to the atmosphere through a pipe bell, the output cross-section of said pipe bell being a Laval nozzle.
  • Said accelerator is a faceted cone installed behind said adapter coaxially with said output pipe, the outer side of said cone has exhaust gas flow channels in the form of a set of thin- walled small- diameter pipes the bottom parts of which are supported by the cone facets and the top parts are supported by the pipe bell.
  • the object of this invention is to provide for local acceleration of a fluid flow thereby expanding the applications of natural and technical low kinetic energy fluid flows in various field of engineering.
  • a flow accelerator comprising at least one working element in the form of a polyhedron at least two facets of which are preferably parallel, wherein each of said parallel facets is a circle or a polygon circumscribing a circle, further wherein the diameters of said circles are not equal; if said circles are sectioned by a plane containing the line connecting the centers of said circles wherein said line lies in said plane, then the point O in which the plane intersects the smaller diameter circle and which is accepted as the origin of a two-dimensional coordinate system, wherein the X-axis OX lies in said plane parallel to said line connecting the centers of said circles and the Y-axis OY is perpendicular to the X-axis in said plane and is directed away from the line connecting the centers of said circles, and the point M in which the plane intersects the larger diameter circle are located at the same side of said plane relative to said line connecting the centers of said circles, and the points O and M are in such a relationship that the coordinates of the
  • Figure 1 shows the cross-sections of the smaller and the larger diameter circles by the plane passing through the centers of those circles.
  • the points O and O 1 are the intersection points of the plane and the smaller diameter circle.
  • the distance between the points O and O' is the diameter of the smaller circle equal to D.
  • the point O is the origin of the two-dimensional coordinate system.
  • the points M and M' are the intersection points of the plane and the larger diameter circle.
  • the distance between the points M and M 1 is the diameter of the larger circle.
  • the dashed line KK 1 is the line connecting the centers of said circles.
  • the arc AB is formed by the Ri radius circle and the arc CE is formed by the R 2 radius circle.
  • the line segments BC and EA are formed by lines located at the distances of 0.7D and O.
  • the point M is located inside the polygon ABCE.
  • Said polygon is preferably a truncated pyramid or a truncated cone, and more preferably the cone element of said truncated cone is concave towards the cone central line.
  • the shape of said concave line (parabola, hyperbola, polygonal line etc.) has been experimentally shown to have but a little effect on said technical result, but the most preferable embodiment is the arc OM of circle as shown in Fig. 1.
  • the line connecting the centers of the smaller and the larger diameter circles that are circumscribed by the above polygons is the symmetry axis of the device and is co-directed with the incident flow. Said technical result is achieved for any types of polygons.
  • Said flow accelerator may further comprise a cylindrical element or a polyhedron circumscribing said cylindrical element and being tangent with the surface of a polyhedron which is the smaller diameter circle or a polygon circumscribing said smaller diameter circle.
  • Figure 2 shows one option of an abutment connection between said cylindrical element or the polyhedron circumscribing said cylindrical element and the polyhedron of said element which is preferably a truncated cone the cone element of which is the arc OM obtained by intersecting with the plane containing the line connecting the symmetry axes of said cone and said cylindrical element forming the basis of an additional polyhedron wherein said line lies in that plane.
  • the dashed line TT 1 in Fig. 2 is the line connecting the symmetry axes of said cone and said cylindrical element.
  • OMM'O 1 is the section of the truncated cone polyhedron by the plane
  • OVV 1 O' is the section of the cylindrical element by the plane.
  • the arrows in Fig. 2 show one of the incident flow directions coincident with the symmetry axis of the device for this connection option.
  • a flow accelerator comprising at least one working element having a polygonal shape at least two facets of which are preferably parallel, wherein each of said parallel facets is a circle or a polygon circumscribing a circle, further wherein the diameters of said circles are not equal, but one of these diameters is equal to the diameter of the smaller circle; if said circles are sectioned by a plane containing the line connecting the centers of said circles wherein said line lies in said plane, then the point O in which the plane intersects the smaller diameter circle and which is accepted as the origin of a two- dimensional coordinate system, wherein the X-axis OX lies in said plane parallel to said line connecting the centers of said circles and the Y-axis OY is perpendicular to the X-axis in said plane and is directed away from the line connecting the centers of said circles, and the point N in which the plane intersects the larger diameter circle are located at the same side of said plane relative to said line connecting the centers of said circles, and
  • Figure 3 shows the cross-sections of the smaller and the larger diameter circles by the plane passing through the centers of those circles.
  • the points O and O' are the intersection points of the plane and the smaller diameter circle.
  • the distance between the points O and O' is the diameter of the smaller circle equal to D.
  • the point O is the origin of the two-dimensional coordinate system.
  • the points N and N' are the intersection points of the plane and the larger diameter circle.
  • the distance between the points N and N' is the diameter of the larger circle.
  • the dashed line PP 1 is the line connecting the centers of said circles.
  • the arc FG is formed by the R 3 radius circle and the arc HJ is formed by the R 4 radius circle.
  • the line segments GH and JF are formed by lines located at the distances of 0.4D and 0.05D from the X-axis OX, respectively.
  • the point M is located inside the polygon FGHJ.
  • Said polygon is preferably also a truncated pyramid or a truncated cone, and more preferably the cone element of said truncated cone is concave towards the cone central line.
  • the shape of said concave line (parabola, hyperbola, polygonal line etc.) has been experimentally shown to have but a little effect on said technical result, but the most preferable embodiment is the arc ON of circle as shown in Fig. 3.
  • the line connecting the centers of the smaller and the larger diameter circles that are circumscribed by the above polygons is the symmetry axis of the device and is co-directed with the incident flow. Said technical result is achieved for any types of polygons.
  • Figure 4 shows one option of an abutment connection between said first and second polyhedrons which are preferably truncated cones the cone element of which is the arc obtained by intersecting with the plane containing the line connecting the symmetry axes of said cones wherein said line lies in that plane.
  • OMMO 1 is the section of the first truncated cone by the plane
  • ONN 1 O 1 is the section of the second truncated cone by the plane.
  • the dashed line TT' in Fig. 4 is the line connecting the symmetry axes of said cones which is the symmetry axis of the device and coincident with the incident flow direction for this connection option.
  • Figure ,5 shows one option of an abutment connection between the first polyhedron which is preferably a truncated cone the cone element of which is an arc, a cylindrical element abutting to said first polyhedron, and the second polyhedron which is preferably a truncated cone the cone element of which is an arc of a circle, said second polyhedron abutting to said cylindrical element, sectioned by a plane containing the line connecting the symmetry axes of said truncated cones wherein said line lies in that plane.
  • OMM 1 O 1 is the section of the first truncated cone by the plane
  • OVVO' is the section of the cylindrical element by the plane
  • VNN 1 V is the section of the second truncated cone by the plane.
  • the dashed line TT 1 in Fig. 5 is the line connecting the symmetry axes of said truncated cones and said cylindrical element which is the symmetry axis of the device and coincident with the incident flow direction for this connection option.
  • any of the above elements may comprise an additional polyhedron located between the polyhedron forming said element and its symmetry axis.
  • Said polyhedron is preferably a truncated pyramid and more preferably a truncated cone the cone element of which is a parabola, a hyperbola, or a polygonal line.
  • Figure 6 shows one option of a connection between the first polyhedron which is preferably a truncated cone the cone element of which is an arc of a circle.
  • OMMO 1 is the section of the first truncated cone by the plane
  • OUUO' is the section of the embedded truncated cone by the plane. It is valid that 0.3D ⁇ L ⁇ 3.0D.
  • the larger diameter of the embedded truncated cone is smaller than the larger diameter of the outer truncated cone.
  • Figure 7 shows a structure comprising two abutting elements one of which comprises an additional polyhedron.
  • the flow accelerator design suggested herein may have different applications.
  • the device can be used in the designing of wind or hydropower plants.
  • Wind power plants are widely used in high yearly average wind speed. Typically, all wind turbine manufacturers design their items for a wind speed of above 10-11 mps. Therefore developing wind power plants with a design wind speed of 5-6 mps gives broad opportunities for building wind power plants in most regions of the world. On the other hand, flow acceleration in the windwheel plane allows using smaller wind power plants while retaining the output power or largely, by 9-12 times, increasing the power of existing plants.
  • the device can be used in wind or hydropower plants where the windwheel or the water turbine axis is parallel to the incident flow axis (horizontal axis plants). Then the device allows increasing the incident flow velocity by 2.28 times.
  • the windwheel or the water turbine is installed normal (or at a small angle) to the flow, and its rotation causes the electric machine (e.g. a current generator) to convert the kinetic energy of the flow in the windwheel installation point to electric power.
  • the electric machine e.g. a current generator
  • the windwheel or the water turbine is installed so the wheel rotates in the highest speed zone.
  • the device can also be used in vertical axis turbines and can simultaneously solve the two main problems of the existing vertical axis turbines, i.e. the high flow velocity required to start the machine and the blades overcoming the resistance of the flow passing through the windwheel or the water turbine.
  • a higher flow velocity e.g. 11 mps
  • the flow passes this area, leaves the device and slows down to the surrounding flow, it will reenter the device from the opposite side where the flow velocity is lower, e.g. almost equal to or for some process parameters even lower than that of the incident flow.
  • the blades in that turbine area will have to overcome a significantly smaller resistance of the slowed down flow passing through them than if the velocity of the passing flow was equal to that of the incident flow.
  • the combined effect i.e. the reduction of the incident flow velocity required to start the windwheel or water turbine and the increase in the flow velocity at the front blades along with the reduction of the flow velocity after passing the wheel, largely increases the efficiency of vertical axis turbines.
  • this device often allows collecting the flow from an area greater than that of the device itself. This means that if the device is submerged into a steady state flow and a pressure differential is developed between the area in front of the device and inside the device, the device collects much more of the working media than a standard pipe would.
  • a standard 20 m rotor installed power 50 kW windwheel is capable of producing 7-8 kW at 5 mps wind speed and/or 45-50 kW at 10 mps wind speed.
  • the implementation of the device in a same-size rotor windwheel will provide for an output power of 75-80 kW at 5 mps wind speed and/or more than 500 kW at 10 mps wind speed, the current generator being upgraded accordingly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Hybrid Cells (AREA)
  • Wind Motors (AREA)

Abstract

L’invention concerne des moyens techniques utilisés en aérodynamique et hydrodynamique pour commander la vitesse d’écoulement de milieux fluides. Cette invention peut être utilisée dans l’industrie électrique et dans d’autres domaines techniques pour commander la vitesse d’écoulement de milieux fluides.
PCT/RU2009/000238 2008-07-21 2009-05-20 Accélérateur d’écoulement (options) Ceased WO2010011158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2008129522 2008-07-21
RU2008129522/06A RU2362904C1 (ru) 2008-07-21 2008-07-21 Ускоритель потока (варианты)

Publications (1)

Publication Number Publication Date
WO2010011158A1 true WO2010011158A1 (fr) 2010-01-28

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PCT/RU2009/000238 Ceased WO2010011158A1 (fr) 2008-07-21 2009-05-20 Accélérateur d’écoulement (options)

Country Status (2)

Country Link
RU (1) RU2362904C1 (fr)
WO (1) WO2010011158A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8794903B2 (en) 2006-12-21 2014-08-05 Green Energy Technologies, Llc Shrouded wind turbine system with yaw control
DE102013012711A1 (de) * 2013-08-01 2015-02-05 Rolf Mohl Turbinenvorrichtung sowie deren Herstellung und Verwendung
US9194362B2 (en) 2006-12-21 2015-11-24 Green Energy Technologies, Llc Wind turbine shroud and wind turbine system using the shroud

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2500921C2 (ru) * 2011-09-26 2013-12-10 Борис Викторович Авдеев Ускоритель потока текучих сред в аэро- и гидродинамике

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000286A1 (fr) * 1979-07-18 1981-02-05 J Barracho Turbine eolienne
RU2059839C1 (ru) * 1993-04-16 1996-05-10 Николай Алексеевич Юденков Ускоритель потока выхлопных газов двигателя внутреннего сгорания с эжектором
RU17063U1 (ru) * 2000-10-19 2001-03-10 Серебряков Рудольф Анатольевич Ускоритель потока выхлопных газов двигателя внутреннего сгорания с эжектором
RU2330165C2 (ru) * 2006-07-10 2008-07-27 Государственное образовательное учреждение высшего профессионального образования Воронежское высшее военное авиационное инженерное училище (военный институт) Ускоритель потока выхлопных газов двигателей внутреннего сгорания

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD286727A7 (de) * 1989-03-15 1991-02-07 Veb Motorradwerk Zschopau,De Auspuffanlage fuer eine brennkraftmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000286A1 (fr) * 1979-07-18 1981-02-05 J Barracho Turbine eolienne
RU2059839C1 (ru) * 1993-04-16 1996-05-10 Николай Алексеевич Юденков Ускоритель потока выхлопных газов двигателя внутреннего сгорания с эжектором
RU17063U1 (ru) * 2000-10-19 2001-03-10 Серебряков Рудольф Анатольевич Ускоритель потока выхлопных газов двигателя внутреннего сгорания с эжектором
RU2330165C2 (ru) * 2006-07-10 2008-07-27 Государственное образовательное учреждение высшего профессионального образования Воронежское высшее военное авиационное инженерное училище (военный институт) Ускоритель потока выхлопных газов двигателей внутреннего сгорания

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8794903B2 (en) 2006-12-21 2014-08-05 Green Energy Technologies, Llc Shrouded wind turbine system with yaw control
US9194362B2 (en) 2006-12-21 2015-11-24 Green Energy Technologies, Llc Wind turbine shroud and wind turbine system using the shroud
DE102013012711A1 (de) * 2013-08-01 2015-02-05 Rolf Mohl Turbinenvorrichtung sowie deren Herstellung und Verwendung
DE102013012711B4 (de) * 2013-08-01 2017-10-19 Rolf Mohl Turbinenvorrichtung sowie deren Herstellung und Verwendung

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