WO2011015120A1 - 卡门涡街发电装置 - Google Patents

卡门涡街发电装置 Download PDF

Info

Publication number
WO2011015120A1
WO2011015120A1 PCT/CN2010/075622 CN2010075622W WO2011015120A1 WO 2011015120 A1 WO2011015120 A1 WO 2011015120A1 CN 2010075622 W CN2010075622 W CN 2010075622W WO 2011015120 A1 WO2011015120 A1 WO 2011015120A1
Authority
WO
WIPO (PCT)
Prior art keywords
vortex
generating body
karman
metal coil
karman vortex
Prior art date
Application number
PCT/CN2010/075622
Other languages
English (en)
French (fr)
Inventor
路明
Original Assignee
天津空中代码工程应用软件开发有限公司
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
Priority claimed from CN2009100700421A external-priority patent/CN101800459B/zh
Priority claimed from CN2009200982141U external-priority patent/CN201667600U/zh
Application filed by 天津空中代码工程应用软件开发有限公司 filed Critical 天津空中代码工程应用软件开发有限公司
Priority to CN2010800015558A priority Critical patent/CN102099989A/zh
Publication of WO2011015120A1 publication Critical patent/WO2011015120A1/zh
Priority to US13/188,508 priority patent/US8638002B2/en

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
    • F03D5/00—Other wind motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/04—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving coil systems and stationary magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1869—Linear generators; sectional generators
    • H02K7/1876—Linear generators; sectional generators with reciprocating, linearly oscillating or vibrating parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1892—Generators with parts oscillating or vibrating about an axis
    • 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
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/94—Mounting on supporting structures or systems on a movable wheeled structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • 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

Definitions

  • the present invention relates to a power generating device, and more particularly to a device for generating an alternating current using a Karman vortex street, which converts kinetic energy generated during fluid flow into electrical energy.
  • Reynolds number When describing the motion of a fluid (such as air, water, etc.), a dimensionless number, Reynolds number, is used, which describes the ratio of the inertial force to the viscous force of the fluid. Reynolds number of compressible fluid Re can be expressed by the following formula
  • ⁇ ⁇ ⁇ , / respectively represent the density, velocity and dynamic viscosity coefficient of the fluid; represent the characteristic length scale of the object.
  • the surface boundary layer begins to separate due to the existence of the backpressure gradient in the viscous boundary layer on the surface of the object.
  • the wake behind the object forms different according to different Reynolds numbers.
  • Flow mode A large number of theories and experiments have shown that the Reynolds number ranges from 50 to 500, and a stable, paired, alternately arranged, oppositely rotating, fixed-pitch, vortex with laminar flow as the core is formed in the wake region. This flow pattern is called Carmen Vortex.
  • FIG 1 is a schematic view of the formation of the Karman vortex street.
  • the structure of the vortex in the Karman vortex street can be explained by the principle of conservation of the ring volume. That is, when a vortex falls off from the boundary layer of a non-streamlined object (or vortex generator), there must be a vortex opposite to the circumstance.
  • Carmen vortex streets are created when fluid flows through buildings, wires, and piers.
  • the structure of the vortex in the Karman vortex street is stable, and the relationship between the vortex generation frequency and the fluid flow rate is determined.
  • the dimensionless parameter Strouhal number is also commonly used in Karman vortex street to describe the characteristics of the flow field.
  • the Strouhal number St is defined as
  • St ( 2 ) where / is the shedding frequency of the vortex, and other variables are as described above.
  • the Strouhal number is generally a fixed value of 0.11.
  • the flow rate can be obtained by measuring the vortex shedding frequency.
  • the widely used Karman vortex flowmeter is based on this principle.
  • the vortex moves backward in the direction of the incoming flow.
  • this vortex will be subjected to a force in the vertical direction with the incoming flow, that is, lift.
  • the fluid is subjected to periodic alternating forces in a direction perpendicular to the direction of flow.
  • the fluid also generates a periodically alternating force perpendicular to the direction of the flow to the illiquid object, so that the object oscillates in the direction perpendicular to the flow direction.
  • This type of phenomenon should be avoided in some engineering practices because it can cause fatigue and damage to objects. For example, the Tacoma Narrow Bridge wind damage accident was caused by the Kamen vortex street.
  • An object of the present invention is to solve the above technical problems and to design a device for converting kinetic energy generated when a fluid flows into electric energy using the above background art.
  • a Karman vortex street power generating device including
  • a housing the two ends of the housing are penetrated, one end of which is a fluid inlet end, one end is a fluid outlet end; a permanent magnet, two corresponding faces in the housing, and the one side permanent magnet N pole and the other a permanent magnet S pole corresponds to form a magnetic field in the housing;
  • a vortex generator which is generally located in the casing, and can generate a Karman vortex when the fluid passes;
  • a metal coil is located in the magnetic field, which regularly cuts magnetic lines of force under the action of the Karman vortex, and changes the magnetic flux passing through the metal coil to generate an induced current.
  • the present invention provides an embodiment of an elastic vortex generating body made of an elastic polymer material, wherein two ends of the elastic vortex generating body are respectively fixedly disposed on the left and right corresponding surfaces of the permanent magnet or the casing, and are disposed on the same
  • the metal coil is at the upper end of the magnetic field.
  • the elastic vortex generating body is a columnar, thin-walled hollow elastic body open at both ends, and the metal coil is embedded on the inner wall of the elastic vortex generating body or uniformly wound around the elastic vortex generating body On the surface.
  • the present invention also provides an embodiment of a rigid vortex generator, in order to realize that a metal coil provided on a vortex generating body oscillates up and down in a magnetic field to cut magnetic lines of force, and the rigid vortex generating body supports itself by flexible upper support and flexible lower support Between the upper and lower walls in the housing.
  • the flexible upper support and the flexible lower support preferably consist of a spring or a rubber band.
  • the rigid vortex generator is a columnar, thin-walled hollow, open-ended rigid object, the metal coil It is preferably embedded on the inner wall of the vortex generating body or uniformly wound on the outer surface of the vortex generating body.
  • the two corresponding faces are upper and lower corresponding faces behind the vortex generator, and the metal coil is a rotatable metal coil which is connected to the casing through a rotating shaft and fixed in the magnetic field.
  • the distance between the permanent magnet and the vortex generating body in the direction of fluid flow along the inlet end is preferably greater than or equal to
  • the longitudinal section of the housing is preferably circular or rectangular or square or other polygonal shape.
  • the invention also provides a power generation system, comprising at least two Kamen vortex power generation devices, the system as the unit of the generator set of the present invention, and the plurality of card gates of the invention when the power demand is large.
  • the vortex generator unit is used in combination.
  • the Karman vortex street power generating device of the present invention generates a vortex generating body in the casing, and the Karman vortex street generated when the fluid flows causes the vortex generating body to oscillate, thereby causing or causing the closed metal coil in the magnetic field to move together, due to the Karman
  • the regular oscillation of the vortex street causes the magnetic flux passing through the closed coil to change periodically, thereby generating alternating current in the metal coil, and converting the kinetic energy of the Karman vortex vibration into electric energy, which provides a new way to convert the fluid into electrical energy. .
  • the device consists of only a few components, the structure is simple, the space is small, the weight is light, and the application environment is low;
  • a plurality of power generating devices of the present invention can be used in combination by the design of the casing.
  • the cross-section of the casing as given herein is a regular hexagon
  • the cells can be arranged in a honeycomb shape, so that multiple combinations can be combined in an effective space.
  • the power generating device of the present invention obtains more electric energy.
  • Figure 1 is a schematic view showing the formation of a Karman vortex street
  • Figure 2 is a longitudinal cross-sectional view showing a Karman vortex street power generating device according to a first embodiment of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A' of Figure 2;
  • Figure 4 is a perspective view of Figure 2;
  • Figure 5 is a schematic diagram of a Karman vortex street power generation device according to a first embodiment of the present invention.
  • Figure 6 is a longitudinal cross-sectional view showing a Karman vortex street power generating device according to a second embodiment of the present invention.
  • Figure 7 is a cross-sectional view taken along line C-C' of Figure 6;
  • Figure 8 is a perspective view of Figure 6;
  • Figure 9 is a longitudinal cross-sectional view showing a Karman vortex street power generating device according to a third embodiment of the present invention
  • Figure 10 is a cross-sectional view taken along line EE' of Figure 9;
  • Figure 11 is a perspective view of Figure 9.
  • the design idea of the present invention a metal coil is placed in the magnetic field, and when the closed metal coil performs the movement of the cutting magnetic force line in the magnetic field, the projected area of the metal coil in the direction of the magnetic field line changes, even if the magnetic flux passing through the coil changes.
  • a current will be generated in a closed metal coil.
  • the metal coil can be oscillated. As long as this periodic oscillation is guaranteed to change the magnetic flux through the metal coil, an alternating current will be generated in the metal coil.
  • the present invention provides a Karman vortex street power generating device comprising a casing 1, two permanent magnets (3, 6), a vortex generating body 4, and a metal coil 5, a casing.
  • the two ends of the body 1 are provided with an inlet end 2 and an outlet end 7; the two opposite faces in the casing are respectively provided with permanent magnets (3, 6), and the N pole of one permanent magnet 3 and the S pole of the other surface permanent magnet 6 Correspondingly, a magnetic field is formed between the two permanent magnets (3, 6), and a vortex generating body 4 is disposed at a longitudinal intermediate position in the casing near the inlet end, and when the fluid passes, it can generate a Karman vortex street in the wake region;
  • the metal coil 5 is disposed in an intermediate magnetic field of the permanent magnets (3, 6), which regularly cuts the magnetic lines of force under the action of the Karman vortex, and changes the magnetic flux passing through the metal coil 5 to generate an induced current.
  • the two terminals of the metal coil 5 are led out through the small holes 11 in the casing.
  • FIG. 2 is a longitudinal cross-sectional view showing a Karman vortex street power generating apparatus according to a first embodiment of the present invention (ie, a BB' sectional view of FIG. 3), and FIG. 3 is a cross-sectional view taken along line A-A' of FIG. Figure 4 shows a perspective view of Figure 2.
  • the device comprises a housing 1 having two ends of the inlet end 2 and the outlet end 7, the longitudinal section of the housing 1 being rectangular, and the left and right corresponding faces of the inside of the rectangular housing 1
  • the bottom of the casing is provided with permanent magnets (3, 6), wherein the height h of the two permanent magnets (3, 6) is equal to one-half of the height # of the inner cavity of the casing 1, and the N-pole and the permanent magnet 6 of the permanent magnet 3 Corresponding to the S pole, and forming a magnetic field between the permanent magnet 3 and the permanent magnet 6; the upper end of the magnetic field is provided with a cylindrical elastic vortex generating body, and the left and right ends of the cylindrical elastic vortex generating body 4 are respectively locked Two corresponding surface shells 1 are provided.
  • the elastic vortex generating body When the fluid passes through the elastic vortex generating body and oscillates in a direction perpendicular to the fluid flow direction, the elastic vortex generating body can be periodically deformed up and down in the magnetic field.
  • the outer surface of the elastic vortex generating body 4 is uniformly wound with a metal coil 5, and the two terminals of the metal coil 5 are taken out from the small holes 11 in the casing 1. To ensure that the normal flow direction of the fluid is not affected, The outer surface of the elastic vortex generating body 4 of the metal coil 5 should be as smooth as possible.
  • the Karman vortex street causes the elastic vortex generating body 4 to deform in the vertical direction along the incoming flow, thereby driving
  • the metal coil 5 regularly cuts the magnetic lines of force in a magnetic field between the permanent magnets (3, 6); since the elastic vortex generating body 4 is located in the horizontal direction of the upper end of the magnetic field between the permanent magnets (3, 6), therefore, without oscillation,
  • the magnetic flux passing through the metal coil 5 is fixed. As shown in Fig. 2 and Fig. 5, in the closed area surrounded by the metal coil, about one-half of the magnetic flux passes through, and it acts on the Karman vortex street.
  • the metal coil 5 wound around the elastic vortex generating body 4 is partially deviated from the magnetic field, and then enters the magnetic field to periodically change, thereby closing.
  • induction current is generated so as to continuously communicate.
  • the elastic vortex generating body is made of an elastic polymer material, such as rubber, rubber, etc.
  • the shape of the vortex generating body may be a rectangular cross section in addition to the cylindrical shape shown in FIG. a cylindrical shape of a diamond shape, a trapezoidal shape, or the like, or other non-streamline type;
  • the permanent magnets may be disposed along the bottom of the casing as shown in FIG. 2, and may be disposed on the left and right corresponding faces of the casing along the top end of the casing.
  • the elastic vortex generating body is located at a distance of not less than 2L from the inlet end, thereby ensuring that the passage from the inlet end to the vortex generating body can function as a diversion, so that the incoming flow is kept uniform and stable, and the vortex is generated after the body is generated.
  • the Carmen vortex street Z represents the characteristic length of the vortex generator, that is, the projected length dimension of the section of the non-streamlined object along the fluid flow direction of the inlet end.
  • the characteristic length Z is the diameter of the circle.
  • the metal coil 5 can be uniformly wound on the outer surface of the elastic vortex generating body as shown in FIG. 4, when the elastic vortex generating body 4 is columnar, thin-walled hollow, and both ends are open, the metal coil 5 can be evenly distributed. It is embedded on the inner surface of the elastic vortex generator to avoid the effect of the outer surface of the winding on the outer surface so that the outer surface is not smooth enough to affect the fluid flow.
  • the premise of using such a device to generate alternating current is that there must be a flow of fluid and the Reynolds number of the fluid should be within the range of the Karman vortex. Because the general wind field meets this condition in engineering practice. For example, the wind speed is 0. 02 m / sec, the density and dynamic viscosity of the air are 1. 2 kg / m 3 and 1. 8X 10 - 5 pascals; the characteristic length of the vortex generator For a scale of 0.1 m, the Reynolds number calculated according to formula (1) is 133. After the Karman vortex street is generated, the vortex generator is subjected to lift, and its magnitude is proportional to the velocity of the incoming flow and the length dimension of the object. According to the static analysis method and ignoring the gravity of the oscillating object, it can be obtained that the lift force of the object at any time is equal to the restoring force of the elastic vortex generator.
  • the device can be realized by selecting parameters such as the shape and deformation coefficient of the appropriate elastic vortex generator.
  • the amount of displacement y(t) that varies with time in the transverse vibration of the object can be expressed by the following function.
  • y(t) A Q sin(2 ⁇ / e , (6) where is the amplitude; ⁇ is the oscillation frequency of the object, which can be equal to or close to the vortex shedding frequency according to the specific condition of the flow field.
  • FIG. 6 is a cross-sectional view taken along line DD' of FIG. 7
  • FIG. 8 is a perspective view of FIG. 8 (wherein FIG. 6 is a cross-sectional view taken along line DD' of FIG. 7), which is different from the first Karman vortex power generation device embodiment.
  • the vortex generator 4 is connected to the casing 1 in a different manner.
  • the vortex generator 4 is applied to a rigid non-streamlined object (that is, a rigid vortex generator), and is preferably light in weight. of.
  • the vortex generating body 4 having a trapezoidal cross section is placed in the housing 1 having a rectangular cross section, and is supported by a flexible upper support 8 composed of two springs and a flexible lower support 9 composed of two springs.
  • the bodies 1 are joined such that the rigid vortex generating body 4 is supported between the upper and lower walls of the casing 1.
  • the present embodiment preferably reduces the diameter of the inlet end such that the spring as the upper and lower supports is located at the inlet end along the fluid flow direction.
  • rigid vortex generator 4 may be solid or hollow column and non-metallic material
  • metal coil 5 may be uniformly wound on the outer surface of rigid vortex generator, when rigid vortex occurs
  • the body 4 is a columnar, thin-walled hollow rigid object with open ends, and the metal coil 5 can also be uniformly embedded on the inner surface of the rigid vortex generating body, thereby avoiding winding the outer surface. The effect of fluid flow on the outer surface is not smooth enough.
  • the device is placed in a flow in a direction through which fluid enters the housing 1 through the inlet end 2 of the housing 1.
  • the fluid bypasses the vortex generator 4, and a Karman vortex street is generated at the rear. Due to the connection of the flexible upper and lower supports (8, 9), the Karman vortex street causes the vortex generating body 4 to oscillate in the vertical direction along the incoming flow.
  • the metal coil 5 wound around the vortex generator 4 also oscillates.
  • the magnetic flux passing through the metal coil 5 is fixed without oscillation.
  • the metal coil 5 oscillates, since the area of the magnetic field swept by the metal coil 5 periodically changes, the magnetic flux changes periodically, and alternating current is generated in the metal coil 5.
  • the two terminals of the metal coil 5 are led out through the small holes 11 in the casing 1.
  • FIG. 9 and 10 are schematic views and FIG. 11 is a perspective view (wherein FIG. 9 is a cross-sectional view taken along the line FF' of FIG. 10), which is different from the first two in the third embodiment of the present invention.
  • a vortex generating body 4 having a rectangular cross section is disposed at a longitudinal middle portion in the casing 1, and permanent magnets (3, 6) are respectively disposed on the upper and lower walls behind the vortex generating body 4, forever
  • a rotatable metal coil 5 is disposed in the middle of the magnet (3, 6), is connected to the housing 1 through the rotating shaft 10, and is fixed in the magnetic field, and the rotating shaft 10 is riveted to the left and right corresponding sides of the housing 1.
  • the distance between the permanent magnet and the vortex generator in the direction of fluid flow along the inlet end is greater than or equal to 2 to ensure that the metal coils in the magnetic field are in a stable, paired, alternate arrangement, and the direction of rotation is opposite. , fixed-pitch, with laminar flow as the core of the Carmen vortex street.
  • the fluid When the device is placed in a fluid in a certain direction, such as a wind field, or the device is moved at a certain speed, the fluid enters the casing 1 through the inlet end 2 of the casing 1.
  • the fluid bypasses the vortex generator 4, and a Karman vortex street is generated at the rear.
  • the vortices in the Karman vortex street are paired and flowed in the opposite direction through the metal coil 5, and the metal coil 5 oscillates around the rotating shaft 10.
  • the magnetic flux passing through the metal coil 5 is fixed without oscillation.
  • the metal coil 5 oscillates, the magnetic flux changes periodically, and an alternating current is generated in the metal coil 5.
  • the two terminals of the metal coil 5 are led out through the small holes 11 in the casing 1.
  • the casing is preferably a cylindrical casing having a longitudinal cross section of a front hexagonal shape, and the sides of the hexagonal prism housing can be arranged correspondingly.
  • a plurality of circuit connections between the Kamen vortex power generating unit units of the present invention are well known to those skilled in the art and will not be described herein.
  • the Kamen vortex power generation system through the above combination has the advantages of small footprint and convenient installation, and satisfies the need for large power consumption.
  • the Karman vortex street power generating device of the present invention when the fluid flow direction is the horizontal direction, the Karman vortex street power generating device of the present invention is placed horizontally.
  • the installed power generating device as a whole can be used at any angle according to the fluid flow direction, so that The vortex generator can be at any angle to the ground, only to ensure that the direction of fluid flow is parallel to the housing, and the inlet end of the housing is placed in the direction of the source of the fluid.
  • the power generating device of the present invention can be used with the inlet end of the casing facing upward; in addition, when the fluid flow direction does not change, the Karman vortex street of the present invention can also be used.
  • the power generating device is rotated by an angle of 0° to 90° with the fluid flow direction as an axis, for example, when rotated by 90°,
  • the oscillation of the metal coil of the Karman vortex street power generating device of the present invention is not affected by the gravity of the vortex generator and the metal coil.
  • the above embodiment is merely a schematic illustration of the technical solution of the present invention, and the present invention is not limited to the above embodiment, and the present invention can also be modified in shape or structure, and the metal is caused by the Karman vortex vibration generated by the vortex generator.
  • Other variations of the power generating device in which the coil periodically vibrates to generate an inductive current fall within the scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)
  • Toys (AREA)

Description

卡门涡街发电装置
技术领域
本发明涉及一种发电装置， 尤其是一种利用卡门涡街产生交流电流的装置， 该装置将 流体流动过程中产生的动能转化成电能。 背景技术
描述流体 （如空气、 水等） 的运动时， 经常用到一个无量纲数， 雷诺数 （Reynolds number ) , 它描述了流体的惯性力和粘性力之比。 可压缩流体的雷诺数 Re可以用下式来表
其中， Α Γ∞， /分别代表流体的密度，速度和动力粘性系数； 代表物体的特征长度尺度。 当流体绕过非流线形物体时， 由于物体表面的粘性边界层中存在逆压梯度， 表面边界层开 始分离， 经过一定时间的发展， 物体后方的尾迹中， 根据不同的雷诺数， 形成不同流动模 式。 大量的理论和实验证明， 雷诺数从 50 到 500范围内， 尾迹区域内会形成稳定的、 成 对的、 交替排列的、 旋转方向相反的、 固定间距的， 以层流为核心的旋涡。 这样的流动模 式被称为卡门涡街。 因为德国的流体力学家冯 ·卡门 （1881 1963 ) 率先对这种现象进行 了研究而得名。 图 1是卡门涡街形成示意图。 卡门涡街中的旋涡的结构可以用环量守恒的 原理来解释。 即当一个涡从非流线型物体 （或称旋涡发生体） 的边界层脱落时， 必然有与 之环量相反的涡的存在。在现实中， 当流体流过建筑物、 电线、桥墩时都会产生卡门涡街。 卡门涡街中的旋涡的结构是稳定的， 而且旋涡产生频率和流体流速的关系是确定的。 卡门 涡街中还常用到无量纲参数 Strouhal数来描述流场的特征， Strouhal数 St定义为
St = ( 2 ) 其中， /为旋涡的脱落频率， 其他变量如前所述。 Strouhal 数一般为固定值 0. 21。 因而 流速可以通过测量旋涡脱落频率来获得。 广泛使用的卡门涡街流量计就是根据这个原理制 成的。
在旋涡发生体后方的卡门涡街中， 旋涡会沿来流方向向后运动。 同时由于单个旋涡的 环量的存在，这个涡会受到一个与来流垂直方向上的作用力， 即升力。因而在卡门涡街中， 流体会在与来流方向垂直的方向上受到周期***替变化的作用力。 根据作用力和反作用力 原理， 流体也会对这个非流线型物体产生一个周期***变的、 与来流方向垂直的作用力， 因而物体会在来流方向垂直的方向上产生振荡。 某些工程实践中应该避免这类现象的发 生， 因为这种振荡会引起物体的疲劳和损坏。 例如美国塔科玛峡谷桥 （Tacoma Narrow Bridge ) 风毁事故即是由卡门涡街引起的。
如何利用卡门涡街产生的这种振荡的能量转化成可利用的能量， 如电能， 是本发明解 决的一个技术问题。 发明内容
本发明的目的是解决上述技术问题， 并利用上述背景技术， 设计了一种可将流体流动 时产生的动能转化成电能的装置。
本发明卡门涡街发电装置通过下述技术方案予以实现：
一种卡门涡街发电装置， 包括，
壳体， 所述壳体的两端贯通， 其中一端为流体的入口端， 一端为流体的出口端； 永磁铁， 位于所述壳体内的两对应面， 并且所述一面永磁铁 N极与另一面永磁铁 S极 对应， 在壳体内形成磁场；
旋涡发生体， 其大***于壳体内， 当流体通过时， 能产生卡门涡街；
金属线圈， 其位于所述磁场中， 其在所述卡门涡街作用下规律性切割磁力线， 并使穿 过所述金属线圈的磁通量发生变化， 产生感应电流。
在上述技术方案中， 所述永磁铁沿壳体底部或顶端设置在壳体的左右对应面上， 所述 永磁铁的高度 h满足公式： h = (H - )〜 (H + ）， 其中〃为壳体内腔的高度， 为旋涡 发生体的特征长度； 所述金属线圈设置在所述旋涡发生体上。
其中， 本发明提供了由弹性高分子材料制成的弹性旋涡发生体的实施方式， 所述弹性 旋涡发生体的两端分别固定设置在左右两对应面永磁铁或壳体上， 与其上设置的金属线圈 处于磁场的上端。 所述弹性旋涡发生体是柱状的、 薄壁中空的、 两端敞口的弹性物体， 所 述金属线圈镶嵌在所述弹性旋涡发生体的内壁上或均匀缠绕在所述弹性旋涡发生体的外 表面上。 本发明还提供了刚性旋涡发生体的实施方式， 为实现旋涡发生体上设置的金属线 圈在磁场中上下振荡切割磁力线， 所述刚性旋涡发生体通过柔性上支撑和柔性下支撑使其 自身支撑在壳体内的上壁和下壁之间。 所述的柔性上支撑和柔性下支撑优选由弹簧或皮筋 组成。 所述刚性旋涡发生体是柱状的、 薄壁中空的、 两端敞口的刚性物体， 所述金属线圈 优选镶嵌在所述旋涡发生体的内壁上或均匀缠绕在所述旋涡发生体的外表面上。
所述两对应面为所述旋涡发生体后方的上下两对应面， 所述金属线圈为可转动的金属 线圈， 其通过转动轴与壳体连接并使其固定在所述磁场中。 其中， 所述永磁铁与所述旋涡 发生体沿入口端流体流动方向上的距离优选大于或等于
在上述所有技术方案中， 所述壳体的纵截面优选为圆形或矩形或方形或其他多边形。 本发明还提供了一种发电***， 该***包括至少两个上述卡门涡街发电装置， 该*** 将本发明上述发电装置视为一个发电机组的单元， 用电需求大时将多个本发明卡门涡街发 电装置单元组合使用。
本发明的卡门涡街发电装置的有益效果是：
本发明卡门涡街发电装置通过在壳体内设置一个涡街发生体， 流体流过时产生的卡门 涡街引起旋涡发生体的振荡， 从而带动或引起处在磁场中的闭合金属线圈一起运动， 由于 卡门涡街的规律性振荡， 使穿过闭合线圈的磁通量发生周期性变化， 从而在金属线圈中产 生交流电，将卡门涡街振动的动能转化成电能，为利用流体转化成电能提出了一种新途径。
其次， 本装置只有几个部件组成， 结构简单， 占用空间小， 重量轻， 对应用环境要求 低；
再次， 由于外部设置有壳体， 避免了鸟类的影响， 也不影响景观， 克服了叶片式风力 发电装置的这些缺陷， 可在城市使用。
最后， 可以通过壳体的设计， 将多个本发明发电装置组合使用， 如本文给出的壳体截 面为正六边形时， 可排列成蜂窝状， 从而能在有效地空间内， 组合多个本发明发电装置获 得较多的电能。 附图说明
图 1是卡门涡街形成的示意图；
图 2是本发明第一种实施方式的卡门涡街发电装置的纵向剖视示意图；
图 3是图 2的 A-A'向剖视示意图；
图 4是图 2的立体图；
图 5是本发明第一种实施方式的卡门涡街发电装置的原理图；
图 6是本发明第二种实施方式的卡门涡街发电装置的纵向剖视示意图；
图 7是图 6的 C-C'向剖视示意图；
图 8是图 6的立体图；
图 9本发明第三种实施方式的卡门涡街发电装置的纵向剖视示意图； 图 10是图 9的 E-E'向剖视示意图；
图 11是图 9的立体图。
图中， 1.壳体， 2.入口端， 3.永磁铁 N极， 4.旋涡发生体， 5.金属线圈， 6.永磁铁 S 极， 7.出口端， 8.柔性上支撑， 9.柔性下支撑， 10.转动轴，11小孔。 具体实施方式
本发明的设计思路： 在磁场中安置一个金属线圈， 当闭合金属线圈在磁场中做切割磁 力线的运动， 且让金属线圈在磁力线方向的投影面积产生变化， 即使穿过线圈的磁通量产 生变化。 根据电磁感应定律， 闭合的金属线圈中将产生电流。 根据这个思路， 如果把背景 技术中的卡门涡街这种作用于旋涡发生体上的周期性的、 交替方向的力传递给一个放 置在固定的磁场中的金属线圈， 将可以使金属线圈产生振荡， 只要保证这种周期性的振 荡改变了穿过金属线圈的磁通量， 则在金属线圈中将会产生了交流电。
根据上述设计思路， 如图 2到 11所示， 本发明给了一种卡门涡街发电装置， 包括壳 体 1、 两块永磁铁 （3， 6)、 旋涡发生体 4以及金属线圈 5， 壳体 1的两端设置有入口端 2 和出口端 7 ; 壳体内的两对应面分别设置有永磁铁（3， 6)， 并且一面永磁铁 3的 N极与另 一面永磁铁 6的 S极相对应， 从而在两块永磁铁 （3， 6 ) 中间形成磁场， 壳体内靠近入口 端处的纵向中间位置设置有旋涡发生体 4， 当流体通过时， 其在尾迹区域能产生卡门涡街; 所述金属线圈 5设置在永磁铁 （3， 6 ) 的中间磁场中， 其在所述卡门涡街作用下规律性切 割磁力线， 并使穿过所述金属线圈 5的磁通量发生变化， 产生感应电流。 金属线圈 5的两 个端子通过壳体上的小孔 11 引出。 下面通过具体实施方式及附图， 对本发明做进一步说 明：
图 2给出了本发明第一种实施方式的卡门涡街发电装置的纵向剖视示意图 （即图 3的 B-B'向剖视图）， 图 3为图 2的 A-A'向剖视图， 而图 4给出了图 2的立体图。 从图中可以清 楚地看出， 本装置包括具有入口端 2和出口端 7的两端贯通的壳体 1， 壳体 1的纵截面为 矩形， 在矩形壳体 1 内部的左右两对应面沿壳体底部设置有永磁铁 （3， 6)， 其中两块永 磁铁 (3, 6)的高度 h等于壳体 1内腔高度 #的二分之一， 永磁铁 3的 N极与永磁铁 6的 S 极相对应， 并在永磁铁 3和永磁铁 6的中间形成磁场； 所述磁场上端设置有圆柱形弹性旋 涡发生体， 所述圆柱形弹性旋涡发生体 4的左右两端分别卡在左右两对应面壳体 1上。 当 流体通过弹性旋涡发生体， 在流体流动方向垂直的方向上产生振荡时， 弹性旋涡发生体能 在磁场中发生上下周期性形变。 所述弹性旋涡发生体 4的外表面均匀缠有金属线圈 5， 金 属线圈 5的两端子从壳体 1上的小孔 11引出。 为保证不影响流体的正常流动方向， 缠有 金属线圈 5的弹性旋涡发生体 4的外表面应尽量平滑。
如图 5的原理图所示， 当该装置置于一定方向的流体中， 例如风场中， 或者将该装置 一定速度运动， 则流体会通过入口端 2进入壳体 1， 经过弹性旋涡发生体 4时将在其后部 产生卡门涡街， 由于本实施例中的旋涡发生体 4为弹性旋涡发生体， 则卡门涡街会引起弹 性旋涡发生体 4沿来流垂直方向上发生形变， 从而带动金属线圈 5在永磁铁 （3， 6 ) 中间 的磁场内规律性切割磁力线； 由于弹性旋涡发生体 4位于永磁铁 （3， 6 ) 中间的磁场中上 端水平方向上， 因此， 无振荡情况下， 穿过金属线圈 5的磁通量是固定的， 如图 2， 图 5 所示， 在由金属线圈围成的封闭面积中， 约二分之一部分有磁通量穿过， 而其在卡门涡街 作用下发生上下振荡形变时，将引起缠绕在弹性旋涡发生体 4的金属线圈 5部分偏离磁场， 然后进入磁场，周期性变化，从而使闭合金属线圈在磁场中发生切割磁力线的相对运动时， 通过闭合金属线圈的磁通量随之发生周期性变化， 从而不断产生交流的感应电流。
在上述技术方案中， 所述弹性旋涡发生体是由弹性高分子材料制成的， 如橡胶， 胶皮 等， 旋涡发生体的形状除图 2所示的圆柱形外， 还可为横截面为矩形、 菱形、 梯形等的柱 形， 或其他非流线型； 所述永磁铁除图 2所示沿壳体底部设置外， 还可以沿壳体顶端设置 在壳体的左右对应面上。 所述弹性旋涡发生***于距入口端不小于 2L距离处， 从而保证 从入口端到旋涡发生体之间的通道能起到导流的作用， 使来流保持均匀， 平稳， 通过旋涡 发生体后， 产生卡门涡街。其中 Z代表旋涡发生体的特征长度， 即非流线形物体的截面沿 入口端流体流动方向的投影长度尺寸， 当旋涡发生体沿流体方向的截面为圆时， 其特征长 度 Z为圆的直径（如图 4)， 而如图 8所示， 当截面为梯形时， 其特征长度 Z为垂直流体流 向的较长底边； 如图 1 1所示， 当截面为矩形时， 其特征长度 为垂直于流体方向上的矩 形边长。 所述永磁铁的高度 h满足公式： h = ^H _ L) (H + L)， 式中〃为壳体内腔的 高度， Z为旋涡发生体的特征长度， 从而保证当弹性旋涡发生体在卡门涡街的作用下发生 形变时， 其上面的金属线圈随之发生切割磁力线的运动， 保证其磁通量随之发生变化， 从 而产生感应电流。除如图 4所示金属线圈 5可以均匀缠绕在弹性旋涡发生体的外表面上外， 当弹性旋涡发生体 4为柱状的、 薄壁中空的、 两端敞口的， 金属线圈 5还可以均匀镶嵌在 弹性旋涡发生体的内表面上， 从而避免缠绕外表面使其外表面不够平滑而对流体流动的影 响。
利用这种装置产生交流电的前提是必须有流体的流动而且流体的雷诺数应在卡门涡 街生成范围内。因为一般的风场在工程实践中是满足这个条件的。例如，风速 0. 02米 /秒， 空气的密度和动力黏度分别为 1. 2千克 /立方米和 1. 8X 10—5帕秒； 旋涡发生体的特征长度 尺度 0. 1米， 则按照公式（1 )计算的雷诺数为 133。 卡门涡街产生后， 旋涡发生体受到升 力， ， 其大小与来流速度和物体的长度尺度成正比。 按照静力学分析方法并忽略振荡物 体的重力， 可以得到物体在任意时刻受到的升力与弹性旋涡发生体的回复力 相等，
FL = Fs ( 3 ) 按照虎克定律， 弹性旋涡发生体的受力和变形可以表示为线形关系，
Fs = k - dY ( 4) 其中， k为弹性旋涡发生体线形变形系数， 为物体在与流动方向垂直方向上的移动量。 从公式 （3 ) 和 （4)可以获得， 这个移动量为 dY = ^- ( 5 ) k
i 也是考虑振荡物体的重力时的最大移动量。 因而该装置是可以通过选择适当弹性 旋涡发生体的形状、 变形系数等参数来实现的。 进一步的动力学分析， 可以将物体横向振 动产生的随时间 ί变化的位移量 y(t)用下面的函数表示，
y(t) = AQ sin(2^/e , (6) 其中， 是振幅； Λ是物体的振荡频率， 它根据来流流场的具体情况， 可以和旋涡的脱 落频率相等或接近。
从图 6、 图 7剖视示意图以及图 8给出的立体图可以看出 （其中， 图 6为图 7的 D-D'向剖视 图）， 与第一种卡门涡街发电装置实施方式不同的是， 本实施方式的卡门涡街发电装置中 的旋涡发生体 4与壳体 1连接方式不同， 本实施方式中旋涡发生体 4适用于符合刚性非流线 型物体（即刚性旋涡发生体)，优选质量轻的。 本实施方式中， 呈梯形截面的旋涡发生体 4置 于截面为矩形的壳体 1中， 并依靠由两个弹簧组成的柔性上支撑 8和二个弹簧组成的柔性下 支撑 9用铆钉与壳体 1连接， 从而使刚性旋涡发生体 4支撑在壳体 1的上壁和下壁之间。 本实 施方式中， 为了避免支撑旋涡发生体的柔性上、 下支撑 （8, 9 ) 对流体流动的影响， 本实 施方式优选缩小入口端的口径， 使得作为上下支撑的弹簧位于入口端沿流体流动方向上的 投影之外 （如图 7, 8所示）， 从而保证作为弹簧不影响流体在旋涡发生体上的流动； 柔性上 下支撑（8， 9 )除釆用弹簧外， 还可以选用其他具有良好回弹性的材料， 如胶皮， 皮筋等; 刚性旋涡发生体 4可以为实体或中空的柱状， 且为非金属材料； 金属线圈 5可以均匀缠绕在 刚性旋涡发生体的外表面上， 当刚性旋涡发生体 4为柱状的、 薄壁中空的、 两端敞口的刚 性物体， 金属线圈 5还可以均匀镶嵌在刚性旋涡发生体的内表面上， 从而避免缠绕外表面 使其外表面不够平滑而对流体流动的影响。
将该装置置于一定方向的来流中， 流体会通过壳体 1的入口端 2， 进入壳体 1。 流体绕 过旋涡发生体 4， 在其后部会产生卡门涡街。 由于连接有柔性上、 下支撑 (8, 9)， 卡门涡街 会引起旋涡发生体 4沿来流垂直方向上振荡。 缠绕在旋涡发生体 4上的金属线圈 5也随之振 荡。 无振荡情况下， 穿过金属线圈 5的磁通量是固定的。 在金属线圈 5振荡时， 由于金属线 圈 5扫过的磁场面积发生周期性变化， 磁通量随之发生周期性变化， 于是金属线圈 5中产生 了交流电。 金属线圈 5的两个端子通过壳体 1上的小孔 11引出。
从图 9、 图 10剖视示意图以及图 11给出的立体图可以看出 （其中， 图 9为图 10的 F-F'向剖视图）， 与前两种不同的是， 本发明第三种实施方式的卡门涡街发电装置， 壳体 1 内的纵向中部位置设置有截面呈矩形的旋涡发生体 4， 所述旋涡发生体 4后方的上下壁上 分别设置有永磁铁（3， 6)， 永磁铁（3， 6 ) 的中间设置有可转动的金属线圈 5， 通过转动 轴 10与壳体 1连接并使其固定在所述磁场中，而转动轴 10铆接在壳体 1的左右对应两侧， 且位于旋涡发生体的水平中截面上。 其中， 所述永磁铁与所述旋涡发生体沿入口端流体流 动方向上的距离大于或等于 2 ， 以保证所述磁场中的金属线圈处于稳定的、 成对的、交替 排列的、 旋转方向相反的、 固定间距的， 以层流为核心的卡门涡街中。
将该装置置于一定方向的流体中， 例如风场中， 或者将该装置以一定速度运动， 则流 体会通过壳体 1的入口端 2，进入壳体 1。流体绕过旋涡发生体 4，在其后部会产生卡门涡街。 卡门涡街中的旋涡成对、 反向流经金属线圈 5， 金属线圈 5绕转动轴 10产生振荡。 无振荡情 况下， 穿过金属线圈 5的磁通量是固定的。 在金属线圈 5振荡时， 磁通量随之发生周期性变 化， 于是金属线圈 5中产生了交流电。 金属线圈 5的两个端子通过壳体 1上的小孔 11引出。
当用电量大时， 可以将多个本发明卡门涡街发电装置组合使用， 优选壳体为纵截面为 正面六边形的柱形壳体， 可将六棱柱壳体的各侧面对应排列成蜂窝状， 若干个本发明卡 门涡街发电装置单元之间的线路连接属于本领域技术人员公知的技术， 在此不做赘述。 通 过上述组合的卡门涡街发电***， 具有占用空间小， 且安装方便的优点， 同时满足了大用 电量的需要。
上述实施方式中， 在流体流动方向为水平方向时， 本发明卡门涡街发电装置为水平放 置运行， 除这种使用方式外， 安装后的发电装置整体可以根据流体流动方向翻转任何角度 使用， 使旋涡发生体与地面成任何角度均可， 只需保证流体流动的方向与壳体平行， 且壳 体入口端朝向流体来源的方向放置使用。 如流体流动方向为自上而下垂直流动， 则可以将 本发明的发电装置以壳体入口端朝上的放置方式使用；另外，当流体流动方向不发生变化， 还可将本发明卡门涡街发电装置以流体流动方向为轴转动 0°~90°角度使用，如转动 90° 时， 本发明卡门涡街发电装置金属线圈的振荡不受旋涡发生体和金属线圈重力的影响。 上述实施方式仅是本发明技术方案的示意性说明， 本发明并不局限于上述实施方式， 本发明还可以在其形状或结构上作变形， 凡是利用旋涡发生体产生的卡门涡街振动引起金 属线圈周期性振动产生感性电流的发电装置的其他变形均落在本发明保护范围之内。

Claims

权利要求
1. 一种卡门涡街发电装置， 包括，
壳体， 所述壳体的两端贯通， 其中一端为入口端， 一端为出口端；
永磁铁， 分别位于所述壳体内的两对应面， 并且所述一面永磁铁 N极与另一面永磁铁
S极对应， 在壳体内形成磁场；
旋涡发生体， 位于壳体内， 当流体通过时， 能产生卡门涡街；
金属线圈， 位于所述磁场中， 并在所述卡门涡街作用下规律性切割磁力线， 并使穿过 所述金属线圈的磁通量发生变化， 产生感应电流。
2. 根据权利要求 1 所述的卡门涡街发电装置， 其特征在于， 所述永磁铁沿壳体底部或顶 端设置在壳体的左右对应面上， 所述永磁铁的高度 h 满足公式： h - i(H - Z) ~ i(H + z) , 其中 H为壳体内腔的高度， 为旋涡发生体的特征长度； 所述金属线圈设置在所述旋涡发生体上。
3. 根据权利要求 2所述的卡门涡街发电装置， 其特征在于， 所述旋涡发生体为由弹性高 分子材料制成的弹性旋涡发生体， 所述弹性旋涡发生体的两端分别固定设置在对应面 的永磁铁或壳体上。
4. 根据权利要求 3所述的卡门涡街发电装置， 其特征在于， 所述弹性旋涡发生体是柱状 的、 薄壁中空的、 两端敞口的弹性物体， 所述金属线圈镶嵌在所述弹性旋涡发生体的 内壁上或均匀缠绕在所述弹性旋涡发生体的外表面上。
5. 根据权利要求 2所述的卡门涡街发电装置， 其特征在于， 所述旋涡发生体为刚性旋涡 发生体， 所述刚性旋涡发生体通过柔性上支撑和柔性下支撑支撑在壳体内的上壁和下 壁之间。
6. 根据权利要求 5所述的卡门涡街发电装置， 其特征在于， 所述的柔性上支撑和柔性下 支撑由弹簧组成。
7. 根据权利要求 5或 6所述的卡门涡街发电装置， 其特征在于， 所述刚性旋涡发生体是 柱状的、 薄壁中空的、 两端敞口的刚性物体， 所述金属线圈镶嵌在所述刚性旋涡发生 体的内壁上或均匀缠绕在所述刚性旋涡发生体的外表面上。
8. 根据权利要求 1 所述的卡门涡街发电装置， 其特征在于， 所述两对应面为所述旋涡发 生体后方的上下两对应面， 所述金属线圈为可转动的金属线圈， 其通过转动轴与壳体 连接并使其固定在所述磁场中。
9. 根据权利要求 8所述的卡门涡街发电装置， 其特征在于， 所述永磁铁与所述旋涡发生 体沿入口端流体流动方向上的距离大于或等于 U。
10.根据权利要求 1 所述的卡门涡街发电装置， 其特征在于， 所述壳体的纵截面为圆形或 多边形。
11.一种卡门涡街发电***， 其特征在于， 所述的发电***包括至少两个如权利要求 1 所 述的卡门涡街发电装置。
PCT/CN2010/075622 2009-08-04 2010-07-31 卡门涡街发电装置 WO2011015120A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2010800015558A CN102099989A (zh) 2009-08-04 2010-07-31 卡门涡街发电装置
US13/188,508 US8638002B2 (en) 2009-08-04 2011-07-22 Kaman vortex street generator

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200920098214.1 2009-08-04
CN200910070042.1 2009-08-04
CN2009100700421A CN101800459B (zh) 2009-08-04 2009-08-04 卡门涡街发电机
CN2009200982141U CN201667600U (zh) 2009-08-04 2009-08-04 旋涡诱导发电机

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/188,508 Continuation US8638002B2 (en) 2009-08-04 2011-07-22 Kaman vortex street generator

Publications (1)

Publication Number Publication Date
WO2011015120A1 true WO2011015120A1 (zh) 2011-02-10

Family

ID=43543930

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/075622 WO2011015120A1 (zh) 2009-08-04 2010-07-31 卡门涡街发电装置

Country Status (3)

Country Link
US (1) US8638002B2 (zh)
CN (1) CN102099989A (zh)
WO (1) WO2011015120A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2697509A1 (en) * 2011-04-15 2014-02-19 Northeastern University Non-rotating wind energy generator
US9222465B2 (en) 2011-04-15 2015-12-29 Northeastern University Non-rotating wind energy generator

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010046667A1 (de) * 2010-09-27 2012-03-29 Airbus Operations Gmbh Fluid-Aktuator zur Beeinflussung der Strömung entlang einer Strömungsoberfläche sowie Ausblasvorrichtung und Strömungskörper mit einem solchen Fluid-Aktuator
ITUA20163548A1 (it) * 2016-05-18 2017-11-18 Nwhisper S R L S Dispositivo trasduttore di energia fluidodinamica in energia elettromotrice
US10367434B2 (en) * 2017-05-30 2019-07-30 Saudi Arabian Oil Company Harvesting energy from fluid flow
US11187044B2 (en) 2019-12-10 2021-11-30 Saudi Arabian Oil Company Production cavern
US11339636B2 (en) 2020-05-04 2022-05-24 Saudi Arabian Oil Company Determining the integrity of an isolated zone in a wellbore
US11460330B2 (en) 2020-07-06 2022-10-04 Saudi Arabian Oil Company Reducing noise in a vortex flow meter
US11920469B2 (en) 2020-09-08 2024-03-05 Saudi Arabian Oil Company Determining fluid parameters
US11519767B2 (en) 2020-09-08 2022-12-06 Saudi Arabian Oil Company Determining fluid parameters
US11530597B2 (en) 2021-02-18 2022-12-20 Saudi Arabian Oil Company Downhole wireless communication
US11603756B2 (en) 2021-03-03 2023-03-14 Saudi Arabian Oil Company Downhole wireless communication
US11644351B2 (en) 2021-03-19 2023-05-09 Saudi Arabian Oil Company Multiphase flow and salinity meter with dual opposite handed helical resonators
US11619114B2 (en) 2021-04-15 2023-04-04 Saudi Arabian Oil Company Entering a lateral branch of a wellbore with an assembly
US11913464B2 (en) 2021-04-15 2024-02-27 Saudi Arabian Oil Company Lubricating an electric submersible pump
CN113864105B (zh) * 2021-09-14 2022-06-07 清华大学 一种发电组件及双弹性水囊内流能发电装置
US11994016B2 (en) 2021-12-09 2024-05-28 Saudi Arabian Oil Company Downhole phase separation in deviated wells

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001157433A (ja) * 1999-11-26 2001-06-08 Fujitsu Ltd 流体による振動発電装置
CN101341331A (zh) * 2005-12-21 2009-01-07 秦内蒂克有限公司 利用流体流动特别是油井或气井中的流体流动发电
US7493759B2 (en) * 2004-11-15 2009-02-24 The Regents Of The University Of Michigan Fluid motion energy converter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223763A (en) * 1991-02-28 1993-06-29 Hughes Aircraft Company Wind power generator and velocimeter
US5578877A (en) * 1994-06-13 1996-11-26 General Electric Company Apparatus for converting vibratory motion to electrical energy
US7224077B2 (en) * 2004-01-14 2007-05-29 Ocean Power Technologies, Inc. Bluff body energy converter
US7199480B2 (en) * 2004-04-15 2007-04-03 Halliburton Energy Services, Inc. Vibration based power generator
JP4677553B2 (ja) * 2004-11-04 2011-04-27 国立大学法人秋田大学 流力振動を利用した圧電セラミックによる発電方法及び装置
JP2006226221A (ja) * 2005-02-18 2006-08-31 Univ Nagoya 発電装置
US20080048455A1 (en) * 2006-08-25 2008-02-28 Matthew Eli Carney Energy capture in flowing fluids
NO333810B1 (no) * 2008-04-02 2013-09-23 Well Technology As Anordning og fremgangsmåte for energigenerering nede i et borehull

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001157433A (ja) * 1999-11-26 2001-06-08 Fujitsu Ltd 流体による振動発電装置
US7493759B2 (en) * 2004-11-15 2009-02-24 The Regents Of The University Of Michigan Fluid motion energy converter
CN101341331A (zh) * 2005-12-21 2009-01-07 秦内蒂克有限公司 利用流体流动特别是油井或气井中的流体流动发电

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2697509A1 (en) * 2011-04-15 2014-02-19 Northeastern University Non-rotating wind energy generator
CN103732915A (zh) * 2011-04-15 2014-04-16 东北大学 非旋转风力发电机
JP2014510877A (ja) * 2011-04-15 2014-05-01 ノースイースタン ユニヴァーシティ 非回転型風力エネルギー発生機
EP2697509A4 (en) * 2011-04-15 2014-08-27 Univ Northeastern WIND POWER GENERATOR THAT DOES NOT RUN
US9222465B2 (en) 2011-04-15 2015-12-29 Northeastern University Non-rotating wind energy generator
US9447774B2 (en) 2011-04-15 2016-09-20 Northeastern University Non-rotating wind energy generator

Also Published As

Publication number Publication date
CN102099989A (zh) 2011-06-15
US20110273032A1 (en) 2011-11-10
US8638002B2 (en) 2014-01-28

Similar Documents

Publication Publication Date Title
WO2011015120A1 (zh) 卡门涡街发电装置
ES2374233B1 (es) Aerogenerador resonante por vorticidad.
JP5303686B2 (ja) 発電機
ES2796283T3 (es) Generador de energía eléctrica y método de generación de energía eléctrica
JP5478221B2 (ja) 発電装置
Ma et al. Dynamic modeling and analysis of a tristable vortex-induced vibration energy harvester
Bao et al. Bladeless rotational piezoelectric energy harvester for hydroelectric applications of ultra-low and wide-range flow rates
JP2003164136A (ja) 流体力発電装置
US8330289B2 (en) Method and system of extracting energy from wind
CN103732915A (zh) 非旋转风力发电机
CN106762369B (zh) 涡激振动发电装置
KR101806312B1 (ko) 유체를 이용한 진동형 친환경 발전기
Pan et al. Improve efficiency of harvesting wind energy by integrating bi-stability and swinging balls
CN101800459B (zh) 卡门涡街发电机
CN202395680U (zh) 一种新型的压电发电装置
US20130292949A1 (en) Wind energy harnessing wall
CN213185928U (zh) 一种涡激共振复合发电装置
CN202076919U (zh) 车辆用涡街发电机
CN107294343A (zh) 海洋海浪发电的方法和装置
CN108869163A (zh) 一种卡门涡街发电装置
CN201667600U (zh) 旋涡诱导发电机
CN202190202U (zh) 车辆用全工况涡街发电机
Barata et al. The Performance of Magnetostrictive Material for Wind-Induced Vibration Power Generator
CN212389468U (zh) 一种锥体具有锯齿结构的桅杆式无叶片风力发电装置
CN112392661B (zh) 一种频率可调节的摆动式风力发电设备

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 201080001555.8

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10806024

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10806024

Country of ref document: EP

Kind code of ref document: A1