CN101424250A - Speed limiting mechanism for wind power generator - Google Patents
Speed limiting mechanism for wind power generator Download PDFInfo
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- CN101424250A CN101424250A CNA2007101850200A CN200710185020A CN101424250A CN 101424250 A CN101424250 A CN 101424250A CN A2007101850200 A CNA2007101850200 A CN A2007101850200A CN 200710185020 A CN200710185020 A CN 200710185020A CN 101424250 A CN101424250 A CN 101424250A
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- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The invention relates to a speed limit mechanism for a wind motor. The wind motor comprises a vertical rotating shaft and a wind wheel which is arranged on the vertical rotating shaft. The speed limit mechanism comprises a main impeller which does work by utilization of aerodynamic resistance, and a speed limit device which is used for adjusting the wind area of the main impeller or used for adjusting the moment of the impeller so as to control the rotary speed of the wind wheel. The speed limit mechanism for the wind motor utilizes natural characteristics such as wind force, centrifugal force, gravity or elasticity for deceleration of the wind motor under the condition of bold wind, has the advantages of simple structure, low cost and so on, and is particularly suitable for a perpendicular shaft resistance type wind motor.
Description
Technical field
The present invention relates to wind-driven generator, relate in particular to a kind of speed limiting mechanism of vertical shaft resistance type wind-driven generator.
Background technique
Common resistance type wind-driven generator (hereinafter to be referred as wind energy conversion system) mainly contains three kinds according to the shape of its fan blade.The one, glass type is to constitute (see figure 1) by four hemispheric blades 11, is similar to the instrument for wind measurement of weather station.The 2nd, fin type (see figure 2), hinge 22 and small leaf 23 are equipped with in its blade 21 ends, and small leaf 23 can be swung like a cork.Small leaf 23 is opened by wind during leeward direction, and resistance is very little.Rotate to small leaf 23 closure under deadweight and wind-force acting in conjunction when facining the wind direction.Present bigger resistance.The 3rd, S type or many S type (see figure 3).These three kinds of blades all belong to resistance type, their common characteristics are to rely on blowing area, produce pressure under the effect of wind-force, thereby promote the wind energy conversion system rotation.Therefore wind speed big more, under the situation that does not change fan blade blowing area and load, the rotating speed of wind energy conversion system is just fast more.And general wind energy conversion system has at least 4 times speed poor from starting wind speed to the maximum functional wind speed, as does not have effective speed limiting mechanism, will jeopardize wind energy conversion system itself under the high wind situation.
For this reason, existing wind energy conversion system also has the tach signal that adopts the electrical equipment mode to gather wind energy conversion system to control the dynamo-electric mechanism of wind energy conversion system rotating speed.But this mechanism makes complexity and cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of speed limiting mechanism of wind energy conversion system, by the moment that under the situation of high wind, reduces the blowing area of wind energy conversion system fan blade effectively or reduce wind wheel wind energy conversion system is slowed down, balanced generated output, the strong wind Security that enlarges available wind speed range and improve wind energy conversion system.
According to an aspect of the present invention, provide a kind of speed limiting mechanism of wind-driven generator, described wind-driven generator comprises the vertical-type rotating shaft and is installed in wind wheel in this vertical-type rotating shaft that described speed limiting mechanism comprises:
Utilize the main blade of aerodynamical resistance acting; And
Thereby in order to regulate the speed limiting device of main blade blowing area control wind speed round.
Above-mentioned wind wheel is a cup type wind wheel, it comprises and is vertically arranged runing rest with described rotating shaft and is installed in main blade on the runing rest, described main blade is a semi-spherical shape, described speed limiting device comprises that the vane mouth of relative main blade is the secondary fan blade of hemisphere of reverse installation, and described secondary fan blade is connected to the end of described rotating shaft by movable branching rod and hides the part of the vane mouth of described main blade movably under the effect of centrifugal force and gravity.
Above-mentioned wind wheel is a cup type wind wheel, it comprises the main blade framework that is installed in the vertical-type rotating shaft, described main blade framework relatively has an acclivitous tilt angle in the plane from a described rotating shaft side far away, and described main blade is the 3-D triangle shape of a bottom side openings, described speed limiting device comprises and the coaxial secondary fan blade that is installed in the main blade vane mouth of main blade, and described secondary fan blade is part or all of 3-D triangle shape and the described secondary fan blade described bottom side openings that hides described main blade under the effect of centrifugal force and gravity movably.
Above-mentioned wind wheel is a fin type wind wheel, it comprises and is vertically arranged runing rest with described rotating shaft and is installed in main blade on the runing rest, described main blade comprises main blade framework and the small leaf that is arranged on the main blade framework, described speed limiting device comprises the hinge that connects described runing rest and main blade, described hinge is arranged to make the blade face that facings the wind of described main blade towards the horizontal axis of described runing rest an activity point of view to be arranged, described speed limiting device also comprises the draught spring of blade face to the horizontal axis direction tension of described runing rest that facing the wind with described main blade, it is corresponding with the suffered wind-force of fan blade when setting the wind speed that speed limiting mechanism works that the initial tensile force of described draught spring is arranged to, and when wind speed decreased, play reset response, one end of described draught spring is arranged on the blade face that facings the wind of described main blade, and the other end is arranged on the described runing rest.
Above-mentioned wind wheel is a S type wind wheel, it comprises and is vertically arranged runing rest with described rotating shaft and is fixed on main blade on the runing rest, described main blade is a semi-cylindrical form, its arcuate surface has spaced drain charge hole, described speed limiting device comprises the secondary fan blade that is sleeved on described main blade vane mouth inside movably, described secondary fan blade is all semi-cylindrical form, its arcuate surface has with the main blade same intervals and arranges but the drain charge hole of the position of staggering, described speed limiting device also comprises the weight and the draught spring in order to described weight is strained to described vertical-type rotor shaft direction of the arcuate surface opposite side that is fixed on described secondary fan blade, one end of described draught spring is arranged on the described weight, and the other end is arranged on the described runing rest.
Having same intervals on the last lower seal head of above-mentioned main blade and described secondary fan blade arranges but the drain charge hole of the position of staggering.
According to a further aspect in the invention, provide a kind of speed limiting mechanism of wind-driven generator, described wind-driven generator comprises the vertical-type rotating shaft and is installed in wind wheel in this vertical-type rotating shaft that described speed limiting mechanism comprises:
Utilize the fan blade of aerodynamical resistance acting; And
Thereby control the speed limiting device of wind speed round in order to the moment of regulating fan blade.
Above-mentioned wind wheel is a cup type wind wheel, but it comprises with described rotating shaft and is installed in fan blade on the runing rest with being vertically arranged runing rest and horizontal anomalous movement, described fan blade is a semi-cylindrical form, described speed limiting device comprises the push-and-pull device that moves to the direction away from described vertical-type rotating shaft along described runing rest in order to described fan blade, and the weight that under action of centrifugal force described fan blade is moved to the direction of described vertical-type rotating shaft along described runing rest.
Above-mentioned push-and-pull device is to be arranged on the extension spring of described runing rest away from the outboard end of described vertical-type rotating shaft, but be arranged between the outboard end and described fan blade of described runing rest, and described weight links together by stay cord and via the angle pulley and the described fan blade that are arranged in the described vertical-type rotating shaft described weight horizontal anomalous movement.
Above-mentioned fan blade is separately positioned on the both sides of the relative described vertical-type rotating shaft of described runing rest with described weight, and connects with pull bar between described fan blade and the described weight, and described push-and-pull device is the extension spring that is arranged between described weight and the described vertical-type rotating shaft.
Above-mentioned push-and-pull device comprises the curved bar that is arranged between described weight and the described fan blade, and described curved bar can be done moving of substantially horizontal along described runing rest.
Above-mentioned push-and-pull device comprises and is arranged on the hydraulic generator in the described vertical-type rotating shaft and is arranged on the described runing rest and the working solution cylinder pressure between described fan blade and described vertical-type rotating shaft, but be arranged on described weight horizontal anomalous movement with the perpendicular horizontal sliding bar of described vertical-type rotating shaft on, the piston of described hydraulic generator is connected with described weight, and the piston of described working solution cylinder pressure is connected with described fan blade.
According to a further aspect in the invention, provide a kind of speed limiting mechanism of wind-driven generator, described wind-driven generator comprises the vertical-type rotating shaft and is installed in wind wheel in this vertical-type rotating shaft that described speed limiting mechanism comprises:
Utilize the fan blade of aerodynamical resistance acting; And
Thereby in order to regulate the speed limiting device of fan blade blowing area and moment control wind speed round.
Above-mentioned wind wheel is a cup type wind wheel, but it comprises with described rotating shaft and is installed in fan blade on the runing rest with being vertically arranged runing rest and horizontal anomalous movement, described fan blade is a semi-cylindrical form, described speed limiting device comprise in order to described fan blade along described runing rest to the push-and-pull device that launches away from the direction of described vertical-type rotating shaft, and the weight that under action of centrifugal force, described fan blade is shunk to the direction of described vertical-type rotating shaft along described runing rest.
Above-mentioned fan blade is the telescopic fan blade of multilayer that comprises two-layer at least blade, described push-and-pull device comprises and is arranged on the hydraulic generator in the described vertical-type rotating shaft and is arranged on working solution cylinder pressure on the described runing rest, the piston of described hydraulic generator is connected with described weight, and the piston of described working solution cylinder pressure is connected with described fan blade.
According to the speed limiting mechanism of wind energy conversion system of the present invention, utilize natural characteristics such as wind-force, centrifugal force, gravity or elastic force under the high wind situation, to slow down for wind energy conversion system, have simple in structure, low cost and other advantages, be particularly useful for vertical shaft resistance type windmill.
Description of drawings
Fig. 1 is the schematic representation of wind wheel of wind energy conversion system of the employing cup type blade of expression prior art.
Fig. 2 is the schematic representation of wind wheel of wind energy conversion system of the employing fin type blade of expression prior art.
Fig. 3 is the schematic representation of wind wheel of wind energy conversion system of the employing S type blade of expression prior art.
Fig. 4 a and 4b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of first embodiment of the invention.
Fig. 5 a to 5c is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of second embodiment of the invention.
Fig. 6 a and 6b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of third embodiment of the invention.
Fig. 7 a and 7b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of four embodiment of the invention.
Fig. 8 a and 8b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of fifth embodiment of the invention.
Fig. 9 a and 9b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of sixth embodiment of the invention.
Figure 10 is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of seventh embodiment of the invention.
Figure 11 is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of eighth embodiment of the invention.
Figure 12 a to 12c is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of ninth embodiment of the invention.
Embodiment
Fig. 4 a and 4b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of first embodiment of the invention.Wherein, Fig. 4 a is the side view of this wind energy conversion system, and Fig. 4 b is a plan view.Referring to Fig. 4 a and 4b, this wind energy conversion system comprises vertical-type rotating shaft 40 and is installed in wind wheel in the vertical-type rotating shaft 40.Wind wheel is a cup type wind wheel, and it comprises and is vertically arranged runing rest 41 basically with vertical-type rotating shaft 40 and is installed in main blade 43 on this runing rest 41.Main blade 43 for example is a semi-spherical shape.The speed limiting mechanism of this wind energy conversion system comprises a main blade 43 and a speed limiting device, and the latter comprises that the vane mouth of relative main blade is the secondary fan blade 44 that for example is all semi-spherical shape of reverse installation, that is, the vane mouth of secondary fan blade 44 and the vane mouth of main blade 43 are oppositely arranged.Secondary fan blade 44 is connected to the end (counterweight 401 for example is equipped with in the end) of rotating shaft 40 by movable branching rod 42, and the end of movable branching rod 42 and rotating shaft 40 is for flexibly connecting.When wind wheel was static, secondary fan blade 44 relied on the gravity of himself to be suspended on the below of main blade 43 by movable branching rod 42.When wind-force strengthened, wind speed round was accelerated, and centrifugal force upwards climbs the secondary fan blade 44 on the movable branching rod 42, and the part until the vane mouth that hides main blade 43 reduces the blowing area of main blade 43 gradually, and the rotating speed of wind wheel also is restricted thereupon.When wind-force reduced, the rotating speed of wind wheel descended, and makes secondary fan blade 44 return to original position gradually under the effect of gravity, discharges the blowing area of main blade 43 again, went round and began again and finished the function of automatic adjusting and control wind speed round.
Fig. 4 b has schematically drawn and has had the wind wheel of 4 main blades 43, and those skilled in the art also can know, adopt the wind wheel of the main blade 43 of other number to be equally applicable to the present invention.
Fig. 5 a to 5c is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of second embodiment of the invention.Wherein, Fig. 5 a is the side view of this wind energy conversion system, and Fig. 5 b is a plan view.Referring to Fig. 5 a and 5b, this wind energy conversion system comprises vertical-type rotating shaft 50 and is installed in wind wheel in the vertical-type rotating shaft 50.Wind wheel is a cup type wind wheel, and it comprises the main blade framework 51 that is installed in the vertical-type rotating shaft 50.Framework 51 for example is a rectangle, its from rotating shaft 50 side far away relatively plane A one acclivitous tilt angle B is arranged.Main blade 53 for example adopts the 3-D triangle shape, and its vane mouth is arranged on the framework 51.Main blade 53 for example has 4 bottom sides, and wherein by a bottom side openings (not shown) of secondary fan blade, wind can therefrom connect.The speed limiting mechanism of this wind energy conversion system comprises the main blade 53 and a speed limiting device of this bottom side openings, the latter comprise with the coaxial vane mouth that is installed in main blade 53 of main blade 53 in secondary fan blade 54 (also referring to Fig. 5 c).The rearward end of main blade 53 for example is provided with a mandrel 55.Secondary fan blade 54 for example adopts the 3-D triangle shape, and its volume is smaller than the volume of main blade 53, and the end is installed in (referring to Fig. 5 b and 5c) on the mandrel 55 movably thereafter.When wind wheel was static, secondary fan blade 54 relied on the gravity F of himself to remain on framework 51 from the nearest side of rotating shaft 50, and its integral body can hide the bottom side openings of main blade 53 fully.When wind-force strengthened, wind speed round was accelerated, and centrifugal force E makes secondary fan blade 54 outwards upwards climb along framework 51 according to tilt angle B, the bottom side openings of main blade 53 is exposed, wind can connect, thereby the blowing area of main blade 53 is reduced, and the rotating speed of wind wheel also is restricted thereupon.When wind-force reduced, the rotating speed of wind wheel descended, and makes secondary fan blade 54 return to original position gradually under the effect of gravity, discharges the blowing area of main blade 53 again, went round and began again and finished the function of automatic adjusting and control wind speed round.The size of tilt angle B will design according to the factors such as weight of secondary fan blade 54, and too conference makes secondary fan blade 54 be difficult to climb but easily falls, and then can make secondary fan blade 54 easily climb but be difficult to fall too for a short time.Be made into taper as the front-end face with secondary fan blade 54, then effect is more obvious.
Fig. 6 a and 6b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of third embodiment of the invention.Wherein, Fig. 6 a is the side view of this wind energy conversion system, and Fig. 6 b is a plan view.Referring to Fig. 6 a and 6b, this wind energy conversion system comprises vertical-type rotating shaft 60 and is installed in wind wheel in the vertical-type rotating shaft 60.Wind wheel is a fin type wind wheel, and it comprises and is vertically arranged runing rest 61 basically with vertical-type rotating shaft 60 and is installed in main blade 63 on this runing rest 61.Main blade 63 comprises main blade framework 631 and the small leaf 632 that is arranged on the main blade framework 631.The speed limiting mechanism of this wind energy conversion system comprises a main blade 63 and a speed limiting device, and the latter comprises the hinge (turning joint) 66 that is connected between runing rest 61 and the main blade 63.Hinge 66 is arranged to make the blade face 633 that facings the wind of main blade 63 towards the horizontal axis 611 of runing rest 61 a movable angle D to be arranged.Speed limiting device also comprises the draught spring 67 that the blade face 633 that facings the wind of main blade 63 is pulled to horizontal axis 611 directions of runing rest 61.One end of draught spring 67 for example is arranged on the blade face 633 that facings the wind of main blade 63, and the other end for example is arranged on the runing rest 61.It is corresponding with the suffered wind-force of fan blade when setting the wind speed that speed limiting mechanism works that the initial tensile force of draught spring 67 is arranged to, and play reset response when wind speed decreased.Preferably, angle D for example is arranged to about 30 degree.When wind wheel was static, main blade 63 was because the horizontal axis 611 of the pulling force of spring 67 and runing rest 61 is overlapping.When wind-force strengthened, main blade 63 overcomes spring 67 under the effect of strong wind pulling force moved to the direction away from horizontal axis 611, and effective blowing area (being area of contour) of main blade 63 is reduced, and the rotating speed of wind wheel also is restricted thereupon.When wind-force reduced, the blade face 633 that facings the wind of main blade 63 was pulled to the horizontal axis 611 of runing rest 61 again by spring 67, discharge its blowing area again, went round and began again and finished the function of automatic adjusting and control wind speed round.
Fig. 7 a and 7b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of four embodiment of the invention.Wherein, Fig. 7 a is the side view of this wind energy conversion system, and Fig. 7 b is a plan view.Referring to Fig. 7 a and 7b, this wind energy conversion system comprises vertical-type rotating shaft 70 and is installed in wind wheel in the vertical-type rotating shaft 70.Wind wheel is a S type wind wheel, and it comprises and is vertically arranged runing rest 71 basically with vertical-type rotating shaft 70 and is fixed on main blade 73 on this runing rest 71.Main blade 73 for example is a semi-cylindrical form, and its arcuate surface 731 has spaced drain charge hole 733.The speed limiting mechanism of this wind energy conversion system comprises a main blade 73 and a speed limiting device, and the latter comprises the secondary fan blade 74 that is sleeved on main blade 73 vane mouth inside movably.Secondary fan blade 74 for example is all semi-cylindrical form, and its arcuate surface for example has with the main blade same intervals and arranges but the drain charge hole 743 of the position of staggering.Thus, when secondary fan blade 74 was sleeved on main blade 73 vane mouths inside fully, the drain charge hole 743 on the secondary fan blade 74 did not connect with the drain charge hole 733 on the main blade 73.The point midway of main blade 73 is provided with a fulcrum roller 75, secondary fan blade 74 is co-axially mounted on this fulcrum roller 75 with main blade 73, and the installation of secondary fan blade 74 on this fulcrum roller 75 makes the removable distance of the arcuate surface of the relative main blade 73 of its arcuate surface (promptly, make a part of arcuate surface of secondary fan blade 74 shift out the vane mouth of main blade 73), make the drain charge hole 743 of secondary fan blade 74 arcuate surface to connect or part connects with the drain charge hole 733 of main blade 73 arcuate surface.Speed limiting device also comprises and is fixed on the fulcrum roller 75 weight 76 that the vane mouth with secondary fan blade 74 is oppositely arranged, and in order to weight 76 is pulled to the draught spring 77 of vertical-type rotating shaft 70.When wind wheel is static, weight 76 is under the tension of spring 77, to vertical-type rotating shaft 70 near, make the arcuate surface of the arcuate surface of secondary fan blade 74 and main blade 73 overlapping fully, promptly, the arcuate surface of secondary fan blade 74 does not shift out the vane mouth of main blade 73, and the drain charge hole 743 of secondary fan blade 74 does not connect the blowing area maximum of main blade with the drain charge hole 733 of main blade 73.When wind-force strengthens, wind speed round is accelerated, the pulling force that centrifugal force makes weight 76 overcome spring 77 moves to the direction away from vertical-type rotating shaft 70, thereby an arcuate surface part that makes weight 76 drive secondary fan blade 74 around fulcrum roller 75 shifts out the vane mouth of main blade 73, make the drain charge hole 743 of secondary fan blade 74 and drain charge hole 733 parts of main blade 73 connect until whole perforations, the blowing area of main blade 73 reduces, and the rotating speed of wind wheel is restricted thereupon.When wind-force reduced, the rotating speed of wind wheel descended, and makes secondary fan blade 74 return to original position gradually under the tension of spring 77, discharges the blowing area of main blade 73 again, went round and began again and finished the function of automatic adjusting and control wind speed round.
Preferably, also having same intervals on lower seal head on main blade 73 and the secondary fan blade 74 arranges but the drain charge hole of the position of staggering.Preferably, be provided with positioning block 79 in the outer end of runing rest 71, its effect is to prevent that secondary fan blade 74 from shifting out the vane mouth of main blade 73 in the opposite direction under the pulling force of spring 77.
Fig. 8 a and 8b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of fifth embodiment of the invention.Wherein, Fig. 8 a is the side view of this wind energy conversion system, and Fig. 8 b is a plan view.Referring to Fig. 8 a and 8b, this wind energy conversion system comprises vertical-type rotating shaft 80 and is installed in wind wheel in the vertical-type rotating shaft 80.Wind wheel for example is a cup type wind wheel, but it comprises with vertical-type rotating shaft 80 and be installed in fan blade 83 on the runing rest 81 with being vertically arranged runing rest 81 and horizontal anomalous movement that fan blade 83 for example is a semi-cylindrical form.The speed limiting device of this wind energy conversion system comprises the push-and-pull device that moves to the direction away from vertical-type rotating shaft 80 along runing rest 81 in order to fan blade 83, and the weight 86 that under action of centrifugal force fan blade 83 is moved to the direction of vertical-type rotating shaft 80 along runing rest 81.Among this embodiment, described push-and-pull device is for example for being arranged on the extension spring 84 of described runing rest 81 away from the outboard end of vertical-type rotating shaft 80.But be arranged between the outboard end and fan blade 83 of runing rest 81, weight 86 links together with fan blade 83 by stay cord 88 and via the angle pulley 89 that is arranged in the vertical-type rotating shaft 80 weight 86 horizontal anomalous movements.When wind wheel was static, near the outboard end (preferably, can positioning block be set in the position near outboard end and be limited) of runing rest 81, the moment of wind wheel was maximum to fan blade 83 under the effect of extension spring 84.When wind-force strengthens, wind speed round is accelerated, and centrifugal force makes weight 86 move to the outboard end of runing rest 81, and drags the inner end of fan blade 83 to runing rest 81 by stay cord 88 and angle pulley 89, promptly the direction to vertical-type rotating shaft 80 moves, thereby the moment of wind wheel is shortened.Under the constant situation of load, because moment reduces, the rotating speed of wind wheel descends thereupon, makes fan blade 83 can be again under the effect of extension spring 84 move to the outboard end of runing rest 81, goes round and begins again and finishes the function of automatic adjusting and control wind speed round.
Fig. 8 b has schematically drawn and has had the wind wheel of 8 half-cylindrical fan blades 83, and those skilled in the art also can know, adopt the wind wheel of the fan blade of other number or other shape to be equally applicable to the present invention.
Fig. 9 a and 9b are the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of sixth embodiment of the invention.Wherein, Fig. 9 a is the side view of this wind energy conversion system, and Fig. 9 b is a plan view.Referring to Fig. 9 a and 9b, this wind energy conversion system comprises vertical-type rotating shaft 90 and is installed in wind wheel in the vertical-type rotating shaft 90.Wind wheel for example is a cup type wind wheel, but it comprises with vertical-type rotating shaft 90 and be installed in fan blade 93 on the runing rest 91 with being vertically arranged runing rest 91 and horizontal anomalous movement that described fan blade for example is a semi-cylindrical form.The speed limiting device of this wind energy conversion system comprises the push-and-pull device that moves to the direction away from vertical-type rotating shaft 90 along runing rest 91 in order to fan blade 93, and the weight 96 that under action of centrifugal force fan blade 93 is moved to the direction of vertical-type rotating shaft 90 along runing rest 91.Among this embodiment, fan blade 93 and weight 96 for example are separately positioned on the both sides (referring to Fig. 9 b) of runing rest 91 relative vertical-type rotating shafts 90, for example connect with pull bar 98 between fan blade 93 and the weight 96, and the both can move in the horizontal direction.And described push-and-pull device is for example for being arranged on the extension spring 94 between described weight 96 and the vertical-type rotating shaft 90.
When wind wheel is static, weight 96 is close vertical-type rotating shaft 90 under the effect of extension spring 94, thereby make fan blade 93 be positioned at runing rest 91 (preferably away from the outboard end of vertical-type rotating shaft 90 by pull bar 98, can positioning block be set in the position near outboard end is limited), the moment of wind wheel is maximum.When wind-force strengthens, wind speed round is accelerated, centrifugal force makes weight 96 move (seeing icon 96 ') to another outboard end of runing rest 91, and make fan blade 93 move (seeing icon 93 ') to the direction of vertical-type rotating shaft 90 by pull bar 98, thereby the moment of wind wheel is dwindled, and the rotating speed of wind wheel descends thereupon.Along with the decline of wind speed round, the centrifugal force that acts on the weight 96 also reduces thereupon, makes fan blade 93 move to the outboard end of runing rest 91 again under the effect of extension spring 94, goes round and begins again and finishes the function of automatic adjusting and control wind speed round.
Figure 10 is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of seventh embodiment of the invention.Referring to Figure 10, this wind energy conversion system comprises vertical-type rotating shaft 100 and is installed in wind wheel in the vertical-type rotating shaft 100.Wind wheel for example is a cup type wind wheel, but it comprises with vertical-type rotating shaft 100 and be installed in fan blade 103 on the runing rest 101 with being vertically arranged runing rest 101 and horizontal anomalous movement that described fan blade for example is a semi-cylindrical form.The speed limiting device of this wind energy conversion system comprises the push-and-pull device that moves to the direction away from vertical-type rotating shaft 100 along runing rest 101 in order to fan blade 103, and the weight 106 that under action of centrifugal force fan blade 103 is moved to the direction of vertical-type rotating shaft 100 along runing rest 101.Among this embodiment, described push-and-pull device is for example for being arranged on the curved bar 104 between weight 106 and the fan blade 103.Curved bar 104 for example is fixed in the vertical-type rotating shaft 100 by bearing 105 near first mid point 107 of weight 106.For example have groove or guide rail (not shown) on the substantially horizontal of runing rest 101, curved bar 104 is for example made the curved bar slide block near second mid point 108 of fan blades 103 and is embedded this groove or be arranged on this guide rail, and can do moving of substantially horizontal along runing rest 101.
When wind wheel was static, weight 106 was sagging earthward under the effect of gravity, and made fan blade 103 be positioned at the outboard end of runing rest 101 away from vertical-type rotating shaft 100 by curved bar 104, and the moment of wind wheel is maximum.When wind-force strengthens, wind speed round is accelerated, centrifugal force makes weight 106 upwards lift along the fulcrum of bearing 105, and second mid point 108 that passes through curved bar 104 spurs the direction of fan blade 103 to vertical-type rotating shaft 100 to the moving of direction of vertical-type rotating shaft 100, thereby the moment of wind wheel is shortened, and the rotating speed of wind wheel descends thereupon.Decline along with wind speed round, the centrifugal force that acts on the weight 106 also reduces thereupon, weight 106 is sagging earthward gradually, makes fan blade 103 move to the outboard end of runing rest 101 again under the promotion of curved bar 104, goes round and begins again and finishes the function of automatic adjusting and control wind speed round.
Figure 11 is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of eighth embodiment of the invention.Referring to Figure 11, this wind energy conversion system comprises vertical-type rotating shaft 110 and is installed in wind wheel in the vertical-type rotating shaft 110.Wind wheel for example is a cup type wind wheel, but it comprises with vertical-type rotating shaft 110 and be installed in fan blade 113 on the runing rest 111 with being vertically arranged runing rest 111 and horizontal anomalous movement that described fan blade for example is a semi-cylindrical form.The speed limiting device of this wind energy conversion system comprises the push-and-pull device that moves to the direction away from vertical-type rotating shaft 110 along runing rest 111 in order to fan blade 113, and the weight 116 that under action of centrifugal force fan blade 113 is moved to the direction of vertical-type rotating shaft 110 along runing rest 111.Among this embodiment, but weight 116 for example be arranged on horizontal anomalous movement with the perpendicular horizontal sliding bar 119 of vertical-type rotating shaft 110 on.Described push-and-pull device comprises the hydraulic generator 114 that is arranged in the vertical-type rotating shaft 110 and is arranged on the runing rest 111 and the working solution cylinder pressure 115 between fan blade 113 and vertical-type rotating shaft 110.Wherein, the piston 1141 of hydraulic generator 114 is connected with weight 116 by piston rod 1142, and the piston 1151 of working solution cylinder pressure 115 is connected with fan blade 113 by piston rod 1152.Described push-and-pull device for example comprises also that to be arranged on hydraulic generator 114 inner or outside, in order to weight 116 is pushed or pulled to the spring (not shown) of these hydraulic generator 114 1 sides.
When wind wheel was static, weight 116 was positioned at the side of horizontal sliding bar 119 near hydraulic generator 114, i.e. inner side under the effect of elastic force.Fan blade 113 is positioned at the outboard end of runing rest 111, and the moment of wind wheel is maximum.When wind-force strengthened, wind speed round was accelerated, centrifugal force make weight 116 along horizontal sliding bar 119 to outer side shifting away from hydraulic generator 114.The interior piston 1141 of oil hydraulic cylinder that piston rod 1142 drive hydraulic generators 114 are crossed by the outer Mobile Communication of weight 116 moves to oil hydraulic cylinder front portion (being the left side among the figure).The liquid of this oil hydraulic cylinder front portion charges into along the front portion of hydraulic pipe line 117 to working solution cylinder pressure 115 after therefore being squeezed, thereby the pistons 1151 in the oil hydraulic cylinder 115 that pushes the work forward move to the rear portion of working solution cylinder pressure 115.Fan blade 113 is moved by the direction that piston 1151 drives to vertical-type rotating shaft 110 via piston rod 1152, thereby the moment of wind wheel is shortened, and the rotating speed of wind wheel descends thereupon.Decline along with wind speed round, the centrifugal force that acts on the weight 116 also reduces thereupon, weight 116 gradually under the effect of the elastic force of spring to the medial movement of horizontal sliding bar 119, same principle according to the aforementioned hydraulic cylinder makes fan blade 113 be moved to the direction away from vertical-type rotating shaft 110 by piston 1151 drives via piston rod 1152, the moment of wind wheel strengthens, and goes round and begins again and finishes the function of automatic adjusting and control wind speed round.The wind energy conversion system of present embodiment is simple and reliable for structure, and weight 116 and hydraulic generator 114 can adopt sealing to install fully, maximally utilise the rotating diameter of fan blade.Be equal to the principle of exchange according to volume, as long as change the running length that the active chamber volume of hydraulic generator 114 and working solution cylinder pressure 115 can be adjusted fan blade, the moment excursion of wind wheel for example can reach 1 to 2 times.
Figure 12 a to 12c is the schematic representation of expression according to the speed limiting mechanism of the wind energy conversion system of ninth embodiment of the invention.Referring to Figure 12 a to 12c, this wind energy conversion system comprises vertical-type rotating shaft 120 and is installed in wind wheel in the vertical-type rotating shaft 120.Wind wheel for example is a cup type wind wheel, but it comprises with vertical-type rotating shaft 120 and be installed in fan blade 123 on the runing rest 121 with being vertically arranged runing rest 121 and horizontal anomalous movement that described fan blade for example is a semi-cylindrical form.Fan blade 123 for example is the telescopic fan blade of multilayer that comprises two-layer at least blade, schematically the drawn sectional view of the telescopic fan blade 123 of this multilayer of Figure 12 c.Fan blade 123 for example is laminated by outer blade 1231, mesosphere blade 1232 and internal layer blade 1233, and for example the sliding rail 1234 of both sides is connected about the blade with being arranged between layer and the layer.Outer blade 1231 for example is fixed on the side of runing rest 121 near vertical-type rotating shaft 120, and mesosphere blade 1232 and internal layer blade 1233 for example can skid off and launch to the direction away from vertical-type rotating shaft 120 along sliding rail 1234.Figure 12 a represents the expansion schematic representation of this telescopic fan blade 123.The speed limiting device of this wind energy conversion system comprise in order to fan blade 123 along runing rest 121 to the push-and-pull device that launches away from the direction of vertical-type rotating shaft 120, and the weight 126 that under action of centrifugal force, fan blade 123 is shunk to the direction of vertical-type rotating shaft 120 along runing rest 121.Among this embodiment, described push-and-pull device comprises the hydraulic generator 124 that is arranged in the vertical-type rotating shaft 120 and is arranged on working solution cylinder pressure 125 on the runing rest 121.Wherein, the piston of hydraulic generator 124 (not shown) is connected with weight 126, and the piston of working solution cylinder pressure 125 (not shown) is connected (similar shown in its connection and action mechanism and Figure 11 b) with fan blade 123.Weight 126 is arranged on the axle center 1240 of hydraulic generator 124 by adjustable lever 129.
Under the normal wind situation, when wind energy conversion system was in low-speed running, the centrifugal force that telescopic fan blade 123 dependence himself produce and the gravity of weight 126 made fan blade 123 launch fully, and at this moment, the blowing area of fan blade 123 and the moment of wind wheel are maximum.When wind-force strengthened, wind speed round was accelerated, and centrifugal force makes the sagging weight 126 of script lift away from the direction of the runing rest 121 on ground along the direction of arrow among Figure 12 a.The interior piston of oil hydraulic cylinder that the last Mobile Communication toning pole 129 of weight 126 drives hydraulic generator 124 moves to oil hydraulic cylinder front portion (being the B point among the figure).The liquid of this oil hydraulic cylinder front portion charges into along the front portion of hydraulic pipe line 127 to working solution cylinder pressure 125 after therefore being squeezed, thereby the pistons in the oil hydraulic cylinder 125 that pushes the work forward move to the rear portion of working solution cylinder pressure 125 (being B ' point among the figure).The flared mesosphere of fan blade 123 blade 1232 and internal layer blade 1233 are driven direction to vertical-type rotating shaft 120 to outer blade 1231 indentations (shown in Figure 12 b) by the pistons in the working solution cylinder pressure 125, thereby the blowing area of wind wheel and moment are dwindled, and the rotating speed of wind wheel descends thereupon.Decline along with wind speed round, the centrifugal force that acts on the weight 126 also reduces thereupon, weight 126 is sagging earthward under the effect of gravity gradually, according to the same principle of aforementioned hydraulic cylinder, the sagging of weight 126 moved to oil hydraulic cylinder rear portion (being the A point among the figure) by the piston in the oil hydraulic cylinder of adjustable lever 129 drive hydraulic generators 124.The liquid at this oil hydraulic cylinder rear portion charges into along the rear portion of hydraulic pipe line 127 to working solution cylinder pressure 125 after therefore being squeezed, thereby the pistons in the oil hydraulic cylinder 125 that pushes the work forward move to the front portion of working solution cylinder pressure 125 (being A ' point among the figure).Make the mesosphere blade 1232 and the internal layer blade 1233 of fan blade 123 drive to direction expansion away from vertical-type rotating shaft 120 via the piston in the working solution cylinder pressure 125, the blowing area of wind wheel and moment strengthen, and go round and begin again and finish the function of automatic adjusting and control wind speed round.
Certainly, those skilled in the art are according to the above-mentioned principle of present embodiment, also above-mentioned fan blade 123 can be designed to only have the two-layer blade structure of outer blade and internal layer blade, also above-mentioned fan blade 123 can be designed to have the multilayer blade structure more than 3 layers.
Above description taken together with the accompanying drawings is several preferred embodiment of the present invention; according to above-mentioned design of the present invention; those skilled in the art can also make various combinations, conversion and modification to the present invention on this basis, but this combination, conversion and modification all belong in protection scope of the present invention.
Claims (15)
1. the speed limiting mechanism of a wind-driven generator, described wind-driven generator comprise the vertical-type rotating shaft and are installed in wind wheel in this vertical-type rotating shaft that described speed limiting mechanism comprises:
Utilize the main blade of aerodynamical resistance acting; And
Thereby in order to regulate the speed limiting device of main blade blowing area control wind speed round.
2. the speed limiting mechanism of wind-driven generator as claimed in claim 1, it is characterized in that, described wind wheel is a cup type wind wheel, it comprises and is vertically arranged runing rest with described rotating shaft and is installed in main blade on the runing rest, described main blade is a semi-spherical shape, described speed limiting device comprises that the vane mouth of relative main blade is the secondary fan blade of hemisphere of reverse installation, and described secondary fan blade is connected to the end of described rotating shaft by movable branching rod and hides the part of the vane mouth of described main blade movably under the effect of centrifugal force and gravity.
3. the speed limiting mechanism of wind-driven generator as claimed in claim 1, it is characterized in that, described wind wheel is a cup type wind wheel, it comprises the main blade framework that is installed in the vertical-type rotating shaft, described main blade framework relatively has an acclivitous tilt angle in the plane from a described rotating shaft side far away, and described main blade is the 3-D triangle shape of a bottom side openings, described speed limiting device comprises and the coaxial secondary fan blade that is installed in the main blade vane mouth of main blade, and described secondary fan blade is part or all of 3-D triangle shape and the described secondary fan blade described bottom side openings that hides described main blade under the effect of centrifugal force and gravity movably.
4. the speed limiting mechanism of wind-driven generator as claimed in claim 1, it is characterized in that, described wind wheel is a fin type wind wheel, it comprises and is vertically arranged runing rest with described rotating shaft and is installed in main blade on the runing rest, described main blade comprises main blade framework and the small leaf that is arranged on the main blade framework, described speed limiting device comprises the hinge that connects described runing rest and main blade, described hinge is arranged to make the blade face that facings the wind of described main blade towards the horizontal axis of described runing rest an activity point of view to be arranged, described speed limiting device also comprises the draught spring of blade face to the horizontal axis direction tension of described runing rest that facing the wind with described main blade, it is corresponding with the suffered wind-force of fan blade when setting the wind speed that speed limiting mechanism works that the initial tensile force of described draught spring is arranged to, and when wind speed decreased, play reset response, one end of described draught spring is arranged on the blade face that facings the wind of described main blade, and the other end is arranged on the described runing rest.
5. the speed limiting mechanism of wind-driven generator as claimed in claim 1, it is characterized in that, described wind wheel is a S type wind wheel, it comprises and is vertically arranged runing rest with described rotating shaft and is fixed on main blade on the runing rest, described main blade is a semi-cylindrical form, its arcuate surface has spaced drain charge hole, described speed limiting device comprises the secondary fan blade that is sleeved on described main blade vane mouth inside movably, described secondary fan blade is all semi-cylindrical form, its arcuate surface has with the main blade same intervals and arranges but the drain charge hole of the position of staggering, described speed limiting device also comprises the weight and the draught spring in order to described weight is strained to described vertical-type rotor shaft direction of the arcuate surface opposite side that is fixed on described secondary fan blade, one end of described draught spring is arranged on the described weight, and the other end is arranged on the described runing rest.
6. the speed limiting mechanism of wind-driven generator as claimed in claim 5 is characterized in that, has same intervals on the last lower seal head of described main blade and described secondary fan blade and arranges but the drain charge hole of the position of staggering.
7. the speed limiting mechanism of a wind-driven generator, described wind-driven generator comprise the vertical-type rotating shaft and are installed in wind wheel in this vertical-type rotating shaft that described speed limiting mechanism comprises:
Utilize the fan blade of aerodynamical resistance acting; And
Thereby control the speed limiting device of wind speed round in order to the moment of regulating fan blade.
8. the speed limiting mechanism of wind-driven generator as claimed in claim 7, it is characterized in that, described wind wheel is a cup type wind wheel, but it comprises with described rotating shaft and is installed in fan blade on the runing rest with being vertically arranged runing rest and horizontal anomalous movement, described fan blade is a semi-cylindrical form, described speed limiting device comprises the push-and-pull device that moves to the direction away from described vertical-type rotating shaft along described runing rest in order to described fan blade, and the weight that under action of centrifugal force described fan blade is moved to the direction of described vertical-type rotating shaft along described runing rest.
9. the speed limiting mechanism of wind-driven generator as claimed in claim 8, it is characterized in that, described push-and-pull device is to be arranged on the extension spring of described runing rest away from the outboard end of described vertical-type rotating shaft, but be arranged between the outboard end and described fan blade of described runing rest, and described weight links together by stay cord and via the angle pulley and the described fan blade that are arranged in the described vertical-type rotating shaft described weight horizontal anomalous movement.
10. the speed limiting mechanism of wind-driven generator as claimed in claim 8, it is characterized in that, described fan blade and described weight are separately positioned on the both sides of the relative described vertical-type rotating shaft of described runing rest, and connect with pull bar between described fan blade and the described weight, described push-and-pull device is the extension spring that is arranged between described weight and the described vertical-type rotating shaft.
11. the speed limiting mechanism of wind-driven generator as claimed in claim 8 is characterized in that, described push-and-pull device comprises the curved bar that is arranged between described weight and the described fan blade, and described curved bar can be done moving of substantially horizontal along described runing rest.
12. the speed limiting mechanism of wind-driven generator as claimed in claim 8, it is characterized in that, described push-and-pull device comprises and is arranged on the hydraulic generator in the described vertical-type rotating shaft and is arranged on the described runing rest and the working solution cylinder pressure between described fan blade and described vertical-type rotating shaft, but be arranged on described weight horizontal anomalous movement with the perpendicular horizontal sliding bar of described vertical-type rotating shaft on, the piston of described hydraulic generator is connected with described weight, and the piston of described working solution cylinder pressure is connected with described fan blade.
13. the speed limiting mechanism of a wind-driven generator, described wind-driven generator comprise the vertical-type rotating shaft and are installed in wind wheel in this vertical-type rotating shaft that described speed limiting mechanism comprises:
Utilize the fan blade of aerodynamical resistance acting; And
Thereby in order to regulate the speed limiting device of fan blade blowing area and moment control wind speed round.
14. the speed limiting mechanism of wind-driven generator as claimed in claim 13, it is characterized in that, described wind wheel is a cup type wind wheel, but it comprises with described rotating shaft and is installed in fan blade on the runing rest with being vertically arranged runing rest and horizontal anomalous movement, described fan blade is a semi-cylindrical form, described speed limiting device comprise in order to described fan blade along described runing rest to the push-and-pull device that launches away from the direction of described vertical-type rotating shaft, and the weight that under action of centrifugal force, described fan blade is shunk to the direction of described vertical-type rotating shaft along described runing rest.
15. the speed limiting mechanism of wind-driven generator as claimed in claim 14, it is characterized in that, described fan blade is the telescopic fan blade of multilayer that comprises two-layer at least blade, described push-and-pull device comprises and is arranged on the hydraulic generator in the described vertical-type rotating shaft and is arranged on working solution cylinder pressure on the described runing rest, the piston of described hydraulic generator is connected with described weight, and the piston of described working solution cylinder pressure is connected with described fan blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101850200A CN101424250A (en) | 2007-10-31 | 2007-10-31 | Speed limiting mechanism for wind power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101850200A CN101424250A (en) | 2007-10-31 | 2007-10-31 | Speed limiting mechanism for wind power generator |
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| Publication Number | Publication Date |
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| CN101424250A true CN101424250A (en) | 2009-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101850200A Pending CN101424250A (en) | 2007-10-31 | 2007-10-31 | Speed limiting mechanism for wind power generator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806279A (en) * | 2010-04-27 | 2010-08-18 | 王汝藩 | Vertical axis wind generator, blower fan and wind-driven part thereof |
| CN101892948A (en) * | 2010-07-19 | 2010-11-24 | 河海大学 | Vertical axis straight blade lifting wind wheel with speed-limiting device |
| CN102445658A (en) * | 2010-09-30 | 2012-05-09 | 珠海格力电器股份有限公司 | Motor testing device |
| CN105952583A (en) * | 2016-06-30 | 2016-09-21 | 安徽理工大学 | Wind-driven generating device for mine cage |
| CN107023439A (en) * | 2017-05-31 | 2017-08-08 | 中国电建集团西北勘测设计研究院有限公司 | A kind of large-scale vertical shaft type wind generator system |
| CN109826753A (en) * | 2019-03-01 | 2019-05-31 | 陈二东 | A kind of anti-blast type marine power generation device |
| CN113062831A (en) * | 2021-04-12 | 2021-07-02 | 南通理工学院 | Power generation device for new energy hybrid power ship |
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2007
- 2007-10-31 CN CNA2007101850200A patent/CN101424250A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806279A (en) * | 2010-04-27 | 2010-08-18 | 王汝藩 | Vertical axis wind generator, blower fan and wind-driven part thereof |
| CN101892948A (en) * | 2010-07-19 | 2010-11-24 | 河海大学 | Vertical axis straight blade lifting wind wheel with speed-limiting device |
| CN101892948B (en) * | 2010-07-19 | 2011-12-14 | 河海大学 | Vertical axis straight blade lifting wind wheel with speed-limiting device |
| CN102445658A (en) * | 2010-09-30 | 2012-05-09 | 珠海格力电器股份有限公司 | Motor testing device |
| CN102445658B (en) * | 2010-09-30 | 2014-06-11 | 珠海格力电器股份有限公司 | Motor testing device |
| CN105952583A (en) * | 2016-06-30 | 2016-09-21 | 安徽理工大学 | Wind-driven generating device for mine cage |
| CN107023439A (en) * | 2017-05-31 | 2017-08-08 | 中国电建集团西北勘测设计研究院有限公司 | A kind of large-scale vertical shaft type wind generator system |
| CN109826753A (en) * | 2019-03-01 | 2019-05-31 | 陈二东 | A kind of anti-blast type marine power generation device |
| CN113062831A (en) * | 2021-04-12 | 2021-07-02 | 南通理工学院 | Power generation device for new energy hybrid power ship |
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