CN202991345U - Turbomachinery variable pitch device - Google Patents
Turbomachinery variable pitch device Download PDFInfo
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- CN202991345U CN202991345U CN2012207278391U CN201220727839U CN202991345U CN 202991345 U CN202991345 U CN 202991345U CN 2012207278391 U CN2012207278391 U CN 2012207278391U CN 201220727839 U CN201220727839 U CN 201220727839U CN 202991345 U CN202991345 U CN 202991345U
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- centrifugal
- wheel hub
- centrifugal unit
- mounting hole
- unit
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a turbomachinery variable pitch device of a wind generator. The device comprises a connecting disk, a middle pulling rod, a returning spring, a hub, a positioning block, a centrifugation power mechanism which consists of at least two centrifugation units and a variable pitch mechanism which consists of at least two variable pitch units, wherein each of centrifugation units comprises a centrifugation block, a power transmitting sheet and a connecting sheet, centrifugation units are connected to the hub and the connecting disk respectively, centrifugation units are distributed along the rotation direction of the hub and do not interfere with each other during moving, each of variable pitch units comprises a blade pulling rod, a moment arm sheet, a blade shaft, a blade and a fixing disk, variable pitch units are installed on the hub and the connecting disk, blades of variable pitch units are distributed in annular shape along the rotation direction of the hub, the returning spring is sleeved on the middle pulling rod, one end of the returning spring presses on the outer side face of the hub, the other end of the returning spring is connected to one end of the middle pulling rod in a threaded mode through the positioning block with an inner threaded hole, and the other end of the middle pulling rod is connected to the connecting disk fixedly.
Description
Technical field
The utility model relates to a kind of wind generating unit, relates in particular to a kind of impeller vane change device for wind-driven generator.
Background technique
At present, renewable energy sources reduces day by day, has caused serious destruction to environment simultaneously, and China pays much attention to the development of new energy, and wind energy is one of them part and parcel.In middle-size and small-size wind-driven generator, generally blade is fixed on wheel hub, its propeller pitch angle is constant, and the general efficient of this blower fan is lower, resists simultaneously the strong wind ability relatively poor.At present, have part producer to use to become the oar technology to realize maximum utilization to wind energy, but exist mechanical pitch-controlled system easy to wear, the shortcoming such as reliability is low easily damages.The shortcomings such as automatically controlled pitch-controlled system has poor stability, and cost is high, and the source of trouble is many.
The model utility content
The purpose of this utility model is the deficiency for above technology, and a kind of novel turbomachine vane change device is provided, thereby overcomes the part or all of defective of prior art.
For achieving the above object, technical solution adopted in the utility model is: the utility model wind power generator impeller machinery vane change device comprises centrifugal power mechanism, blade pitch device, land, intermediate draw bar, Returnning spring, wheel hub and positioning block; Described centrifugal power mechanism is comprised of at least two centrifugal units, and each centrifugal unit comprises centrifugal-block, steel tape and connecting sheet; In each centrifugal unit, centrifugal-block is fixedly connected with steel tape, and steel tape is connected by the joint bolt with connecting sheet; The steel tape of each centrifugal unit is arranged on wheel hub by the joint bolt respectively, the connecting sheet of each centrifugal unit is arranged on land by the joint bolt respectively, and each centrifugal unit distributes and the mutual noninterference when moving of each centrifugal unit ringwise along the sense of rotation of wheel hub; Described blade pitch device is comprised of at least two change oar unit, and each becomes the oar unit and comprises blade pull bar, arm of force sheet, sharf, blade and fixed tray; In each became the oar unit, sharf was inserted in the blades installation hole of wheel hub, and fixed tray is fixedly connected with wheel hub, and sharf is placed between fixed tray and wheel hub, and sharf and wheel hub can relatively rotate; Arm of force sheet is fixedly mounted on the root of sharf, and the top of sharf is fixedly connected with blade; One end of blade pull bar is connected with land by the joint bolt, and the other end of blade pull bar is connected with arm of force sheet by the joint bolt; Each becomes the oar unit and distributes ringwise along the sense of rotation of wheel hub; Described Returnning spring is enclosed within on intermediate draw bar, one side pressure of Returnning spring is on the outer side surface of wheel hub, the other end of Returnning spring is fixed with the positioning block with interior threaded hole, described positioning block is connected with the externally threaded threaded one end of being processed with of intermediate draw bar, and the other end of intermediate draw bar is fixedly connected with land; The centrifugal-block of Returnning spring and each centrifugal unit divides the both sides that are positioned at wheel hub.
Further, centrifugal unit described in the utility model and/or each described change oar unit evenly distribute ringwise along the sense of rotation of wheel hub.
Further, offer the first centrifugal unit mounting hole more than two on wheel hub described in the utility model, each first centrifugal unit mounting hole distributes ringwise along the sense of rotation of wheel hub, and the steel tape of each described centrifugal unit is installed on respectively on the first corresponding centrifugal unit mounting hole.
Further, the steel tape of each described centrifugal unit of the utility model is installed on the first corresponding centrifugal unit mounting hole by corresponding fitting seat respectively.
Further, offer the second centrifugal unit mounting hole more than two on land described in the utility model, each second centrifugal unit mounting hole distributes ringwise along the sense of rotation of wheel hub, and the blade pull bar of each described change oar unit is installed on respectively on the second corresponding centrifugal unit mounting hole.
Compared with prior art, the beneficial effects of the utility model are: land of the present utility model and intermediate draw bar are fixed, be connected with each blade pull bar that becomes the oar unit simultaneously, during work, intermediate draw bar drive land moves axially, the axial displacement of the blade pull bar that respectively becomes the oar unit is equated, and then the arm of force sheet corner that respectively becomes the oar unit is equated, can guarantee that so all blade Windward angles are consistent; Structure comprises at least two centrifugal units, can produce enough centrifugal force during rotation, and centrifugal unit evenly distributes and makes the total balance simultaneously.When centrifugal-block rotates along with wheel hub, produce the centrifugal force of disalignment, centrifugal force pulls land by driver blade and dowel bar, and land deforms Returnning spring, drives simultaneously all and becomes the oar unit, thereby change vaned Windward angle.When wheel speed reduced, Returnning spring played reset response, and the elastic force of Returnning spring can promote land to mobile in the other direction, thereby the angle windward of blade is recovered.In whole process, the angle windward of blade can change with the variation of wind speed, can make like this impeller be in preferably angle windward under each wind speed, has guaranteed the safe, stable, efficient of wind-driven generator operation.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Fig. 1 is the structural drawing of model utility turbomachine vane change device;
Fig. 2 is the structural representation of centrifugal unit;
Fig. 3 is the structural representation that becomes the oar unit;
Fig. 4 is the structural representation of wheel hub;
Fig. 5 is the internal structure schematic diagram (part) of turbomachine vane change device;
Fig. 6 is the structural representation of land.
Embodiment
As shown in Figure 1, the utility model turbomachine vane change device comprises centrifugal power mechanism, blade pitch device, land 3, Returnning spring 4, intermediate draw bar 5, wheel hub 15 and positioning block 2.As shown in Figure 2, centrifugal power mechanism is comprised of at least two centrifugal units, and centrifugal unit sense of rotation along wheel hub 15 on wheel hub 15 evenly distributes ringwise, mutual noninterference during each centrifugal unit operation.Each centrifugal unit is comprised of centrifugal-block 6, steel tape 7 and connecting sheet 8, and centrifugal-block 6 is fixedly connected with steel tape 7, and steel tape 7 is connected with connecting sheet by 16 connections of joint bolt, and joint bolt 16 guarantees can relatively rotate between steel tapes 7 and connecting sheet 8.The steel tape 7 of each centrifugal unit can be respectively be installed on the first corresponding centrifugal unit mounting hole 19 by corresponding fitting seat 17.As shown in Figure 1, the steel tape 7 of each centrifugal unit is connected with fitting seat 17 on being fixed on wheel hub 15 by joint bolt 16, and is different from the fitting seat 17 that different steel tapes 7 are connected.Wherein, the mode that fitting seat 17 is threaded connection or the mode of welding are fixed on the first centrifugal unit mounting hole 19 of wheel hub 15, and preferably, the first centrifugal unit mounting hole 19 sense of rotation along wheel hub 15 on wheel hub evenly distributes ringwise.As shown in Figure 6, land 3 offers a plurality of the second centrifugal unit mounting holes 22, and preferably, each second centrifugal unit mounting hole 22 sense of rotation along wheel hub 15 on land 3 evenly distributes ringwise; The second centrifugal unit mounting hole 22 is corresponding one by one with centrifugal unit, and namely land 3 is connected (referring to Fig. 1 and Fig. 2) with the connecting sheet 8 of a centrifugal unit by joint bolt 16 correspondingly at each the second centrifugal unit mounting hole 22 places.
As shown in Figure 3, blade pitch device is comprised of at least two change oar unit, and each becomes the oar unit and is comprised of fixed tray 18, arm of force sheet 10, blade pull bar 9, sharf 11 and a blade 1.As shown in Figure 4, on wheel hub 15 along circumferentially spaced have exemplarily show 3 blades installation holes 13 in a plurality of blades installations hole 13(Fig. 4).In conjunction with Fig. 3 and shown in Figure 4, sharf 11 is inserted in corresponding blades installation hole 13, can relatively rotate between sharf 11 and blades installation hole 13; Again fixed tray 18 is bolted on wheel hub 15, sharf 11 is placed between fixed tray 18 and wheel hub 15; Arm of force sheet 10 is fixed by bolts to the root of sharf 11, and blade 1 is fixed by bolts to the top of sharf 11; One end of blade pull bar 9 is connected with land 3 by joint bolt 16, and the other end of blade pull bar 9 is connected with arm of force sheet 10 by joint bolt 16.As shown in Figure 6, land 3 offers and becomes oar cellular installation hole 21, evenly distributes ringwise on land 3, and the quantity that becomes oar cellular installation hole 21 equates with the quantity of change oar unit.Returnning spring 4 is enclosed within on intermediate draw bar 5; And, one side pressure of Returnning spring 4 is on the outer side surface of wheel hub 15, the other end of Returnning spring 4 is fixed with the positioning block 2 with interior threaded hole, positioning block 2 is connected with the externally threaded threaded one end of being processed with of intermediate draw bar 5, the other end of intermediate draw bar 5 is fixedly connected with land 3, and Returnning spring 4 divides with the centrifugal-block of each centrifugal unit the both sides that are positioned at wheel hub 15.As shown in Figure 6, the center of land 3 also offers intermediate draw bar mounting hole 20.Between each steel tape 7 and wheel hub 15, between each steel tape 7 and land 3, between land 3 and each blade pull bar 9, all connect by joint bolt 16 between arm of force sheet 10 and corresponding blade pull bar 9, so can relatively rotate between them.As shown in Figure 4, wheel hub 15 comprises wheel hub matrix 14, the center of wheel hub matrix 14 has central shaft hole, on wheel hub matrix 14 along the sense of rotation interval of wheel hub 15 blades installation hole 13 arranged, thereby blades installation hole 13 is evenly distributed ringwise along the sense of rotation of wheel hub 15; And the central axis in each blades installation hole 13 is mutually vertical with the central axis of the central shaft hole of wheel hub matrix 14; Also the sense of rotation compartment of terrain along wheel hub 15 offers the first centrifugal unit mounting hole 19 on wheel hub matrix 14, the first centrifugal unit mounting hole 19 evenly distributes ringwise along the sense of rotation of wheel hub 15, and the central axis of the central axis of each first centrifugal unit mounting hole 19 and the central shaft hole of wheel hub matrix 14 is parallel to each other.Also be provided with wheel hub stiffening rib 12 on wheel hub matrix 14.Shown in Fig. 4 be the wheel hub 15 that the wind-driven generator of three blades 1 is arranged, wheel hub 15 also has 3 blades installation holes 13 accordingly.The installation that has provided to example one of them centrifugal power unit and a change oar unit in Fig. 5 concerns schematic diagram.Fig. 6 is the structural representation of land 3, as shown in Figure 6, has intermediate draw bar attachment hole 20 at the center of land 3, and the central axis of the central shaft hole of the central axis of intermediate draw bar attachment hole 20 and wheel hub matrix 14 is parallel to each other; Have a plurality of change oars unit attachment hole 21 and the second centrifugal unit attachment hole 22 along the excircle of intermediate draw bar attachment hole 20 on land 3, wherein, each becomes the periphery that oar unit attachment hole 21 is distributed in each second centrifugal unit attachment hole 22.Referring to Fig. 1 to Fig. 6, each central axis that becomes the central shaft hole of the central axis of oar unit attachment hole 21 and each the second centrifugal unit attachment hole 22 and wheel hub matrix 14 is parallel to each other, each becomes oar unit attachment hole 21 and each the second centrifugal unit attachment hole 22 and evenly distributes ringwise along the sense of rotation of wheel hub 15, finally makes each centrifugal unit and each become the oar unit and evenly distributes ringwise along the sense of rotation of wheel hub 15.
Mechanical vane change device working principle of the present utility model is to utilize centrifugal force drive vane axle 11 to rotate, and the variation of wind speed can cause the variation of wheel speed, thereby changes centrifugal force, and then changes angle windward.the specific works process is: when wind speed lower than incision during wind speed blade 1 be in initial propeller pitch angle, this moment, blade 1 can produce larger starting torque, was conducive to low wind speed and started, after impeller starts, when increasing along with rotating speed, centrifugal power mechanism produces and becomes the oar driving source, when centrifugal-block 6 along with wheel hub 15 rotates, produce the centrifugal force of disalignment, centrifugal force pulls land 3 by driver blade 7 and dowel bar 8, land 3 deforms Returnning spring 4, all that simultaneously drive blade pitch devices by land 3 become the oar unit, make blade 1 be in rapidly better angle windward, can guarantee the output power of the following blower fan of rated wind speed like this, land 3 is connected with the blade pull bar 9 that each becomes the oar unit simultaneously, during work, intermediate draw bar 5 drive lands 3 move axially, the axial displacement of the blade pull bar 9 that respectively becomes the oar unit is equated, and then arm of force sheet 10 corners that respectively become the oar unit are equated, can guarantee that so all blades 1 Windward angle is consistent, structure comprises at least two centrifugal units, can produce enough centrifugal force during rotation, and centrifugal unit evenly distributes and makes the total balance simultaneously.When surpassing rated wind speed, wheel speed slightly improves, and further changes propeller pitch angle, and can limit the driving moment of impeller this moment, thereby limited the further raising of rotating speed, makes total safety.When wheel speed reduced, Returnning spring 4 played reset response, and the elastic force of spring promotes land 3 to mobile in the other direction, thereby the angle windward of blade 1 is recovered.Whole process, blade 1 angle windward can change with the variation of wind speed, can make like this impeller be in preferably angle windward under each wind speed.
The utility model overall structure is simple, and response is instant; In the time of can realizing low wind speed, better startup angle is arranged, make impeller be in best tip-speed ratio during rated wind speed, speed limit during high wind speed; Whole articulation structure uses wear-resisting joint shaft bearing, and long service life has been guaranteed the safe, stable, efficient of wind-driven generator operation.
Claims (7)
1. wind power generator impeller machinery vane change device is characterized in that: comprise centrifugal power mechanism, blade pitch device, land, intermediate draw bar, Returnning spring, wheel hub and positioning block;
Described centrifugal power mechanism is comprised of at least two centrifugal units, and each centrifugal unit comprises centrifugal-block, steel tape and connecting sheet; In each centrifugal unit, centrifugal-block is fixedly connected with steel tape, and steel tape is connected by the joint bolt with connecting sheet; The steel tape of each centrifugal unit is arranged on wheel hub by the joint bolt respectively, the connecting sheet of each centrifugal unit is arranged on land by the joint bolt respectively, and each centrifugal unit distributes and the mutual noninterference when moving of each centrifugal unit ringwise along the sense of rotation of wheel hub;
Described blade pitch device is comprised of at least two change oar unit, and each becomes the oar unit and comprises blade pull bar, arm of force sheet, sharf, blade and fixed tray; In each became the oar unit, sharf was inserted in the blades installation hole of wheel hub, and fixed tray is fixedly connected with wheel hub, and sharf is placed between fixed tray and wheel hub, and sharf and wheel hub can relatively rotate; Arm of force sheet is fixedly mounted on the root of sharf, and the top of sharf is fixedly connected with blade; One end of blade pull bar is connected with land by the joint bolt, and the other end of blade pull bar is connected with arm of force sheet by the joint bolt; Each becomes the oar unit and distributes ringwise along the sense of rotation of wheel hub;
Described Returnning spring is enclosed within on intermediate draw bar, one side pressure of Returnning spring is on the outer side surface of wheel hub, the other end of Returnning spring is fixed with the positioning block with interior threaded hole, described positioning block is connected with the externally threaded threaded one end of being processed with of intermediate draw bar, and the other end of intermediate draw bar is fixedly connected with land; The centrifugal-block of Returnning spring and each centrifugal unit divides the both sides that are positioned at wheel hub.
2. wind power generator impeller according to claim 1 machinery vane change device is characterized in that: each described centrifugal unit and/or each described change oar unit evenly distribute ringwise along the sense of rotation of wheel hub.
3. wind power generator impeller according to claim 1 and 2 machinery vane change device, it is characterized in that: offer the first centrifugal unit mounting hole more than two on described wheel hub, each first centrifugal unit mounting hole distributes ringwise along the sense of rotation of wheel hub, and the steel tape of each described centrifugal unit is installed on respectively on the first corresponding centrifugal unit mounting hole.
4. wind power generator impeller according to claim 3 machinery vane change device, it is characterized in that: the steel tape of each described centrifugal unit is installed on the first corresponding centrifugal unit mounting hole by corresponding fitting seat respectively.
5. wind power generator impeller according to claim 1 and 2 machinery vane change device, it is characterized in that: offer the second centrifugal unit mounting hole more than two on described land, each second centrifugal unit mounting hole distributes ringwise along the sense of rotation of wheel hub, and the blade pull bar of each described change oar unit is installed on respectively on the second corresponding centrifugal unit mounting hole.
6. wind power generator impeller according to claim 3 machinery vane change device, it is characterized in that: offer the second centrifugal unit mounting hole more than two on described land, each second centrifugal unit mounting hole distributes ringwise along the sense of rotation of wheel hub, and the blade pull bar of each described change oar unit is installed on respectively on the second corresponding centrifugal unit mounting hole.
7. wind power generator impeller according to claim 4 machinery vane change device, it is characterized in that: offer the second centrifugal unit mounting hole more than two on described land, each second centrifugal unit mounting hole distributes ringwise along the sense of rotation of wheel hub, and the blade pull bar of each described change oar unit is installed on respectively on the second corresponding centrifugal unit mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207278391U CN202991345U (en) | 2012-12-26 | 2012-12-26 | Turbomachinery variable pitch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207278391U CN202991345U (en) | 2012-12-26 | 2012-12-26 | Turbomachinery variable pitch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991345U true CN202991345U (en) | 2013-06-12 |
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ID=48562531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207278391U Withdrawn - After Issue CN202991345U (en) | 2012-12-26 | 2012-12-26 | Turbomachinery variable pitch device |
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| Country | Link |
|---|---|
| CN (1) | CN202991345U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996345A (en) * | 2012-12-26 | 2013-03-27 | 浙江理工大学 | Variable pitch device of turbomachinery |
| CN104912749A (en) * | 2015-06-30 | 2015-09-16 | 河北工业大学 | Wind generator adaptive adjustment hub device |
-
2012
- 2012-12-26 CN CN2012207278391U patent/CN202991345U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996345A (en) * | 2012-12-26 | 2013-03-27 | 浙江理工大学 | Variable pitch device of turbomachinery |
| CN102996345B (en) * | 2012-12-26 | 2014-09-24 | 浙江理工大学 | Variable pitch device of turbomachinery |
| CN104912749A (en) * | 2015-06-30 | 2015-09-16 | 河北工业大学 | Wind generator adaptive adjustment hub device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20140924 |
|
| RGAV | Abandon patent right to avoid regrant |