CN2658419Y - Water turbine of regulating angle of attack of blade by spring - Google Patents
Water turbine of regulating angle of attack of blade by spring Download PDFInfo
- Publication number
- CN2658419Y CN2658419Y CNU032390610U CN03239061U CN2658419Y CN 2658419 Y CN2658419 Y CN 2658419Y CN U032390610 U CNU032390610 U CN U032390610U CN 03239061 U CN03239061 U CN 03239061U CN 2658419 Y CN2658419 Y CN 2658419Y
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- blade
- sharf
- rotating disk
- hydraulic turbine
- disk case
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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
- Y02E10/20—Hydro energy
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Abstract
The utility model relates to a hydraulic turbine with an blade attack angle, a modified hydraulic turbine structure operated by using the kinetic energy of the river water current and the sea tidal current, pertains to a technical field of a hydraulic machinery and a hydraulic engine, and consists of a hydraulic turbine base, a principal axis, a or two rotary table box (es), a plurality of blades, a blade axle, a blade bearing base matched with the blade axle, a spring and relating accessories. In the utility model, a blade control device of a cycloidal straight-blade hydraulic turbine with a variable attach angle is substituted by the simple spring structure, thus simplifying the structure, reducing the energy consumption when the attack angle varies and enhancing the reliability of the system operation and convenient maintenance. Also, after the tidal current direction is stabilized( regardless of the tide or the ebb), the blade attack angle is automatically adjusted into an optimal valve by the blades at the different positions of the rotary hydraulic turbine by a mean of the spring force, further the performance curve of the hydraulic turbine is improved. Thus the performance of the hydraulic turbine with a blade attack angle is enabled to close to the performance of the cycloidal straight-blade hydraulic turbine with a variable attach angle, and the performance-cost ratio is increased by around 30%.
Description
Technical field
The utility model relates to a kind of water turbine of spring control attack angle of blade, is the transformation to the hydraulic turbine structure that utilizes ocean trend and the work of river waterflow kinetic energy, belongs to hydraulic machine and fluid motor field.
Background technique
At present, in the applicable technical field in ocean, trend can have transverse axis rotary propeller type, the straight leaf formula of transverse axis, vertical pivot ring type and the straight leaf formula of vertical pivot etc. several by water turbine.Also can divide into fixedly angle of attack formula and variable angle of attack formula according to the adjustability of attack angle of blade.Fixedly angle of attack formula straight bladed turbine is simple in structure, but capacity usage ratio (being the water turbine rotation function and the ratio of trend kinetic energy) is low, and the starting torque behind the slack water is little.People have developed variable angle of attack formula straight bladed turbine for this reason, as cycloid formula straight bladed turbine.But it also brings some other problemses when improving capacity usage ratio, as: attack angle of blade regulating mechanism complexity, when particularly changing (rising tide, ebb) at direction of tide, need to change the direction of blade inlet edge, and with the loss of energy, the poor reliability of system, price performance is low, the care and maintenance inconvenience.
Summary of the invention
The purpose of this utility model is the water turbine that discloses a kind of spring control attack angle of blade, belongs to the straight leaf formula of variable angle of attack water turbine.It has replaced the blade control mechanism of the variable angle of attack straight bladed turbine of cycloid formula with simple spring mechanism, thereby simplifies the structure, and has reduced the energy consumption when becoming the angle of attack, has increased the reliability of system works, has improved price performance, and maintaining is convenient.And in the stable back of direction of tide (still ebb that no matter flood tide), blade can be independently be adjusted to preferred values with the angle of attack of blade at the diverse location of water turbine rotation by spring force, and then improved the performance curve of water turbine, make it to approach the straight bladed turbine of the variable angle of attack of cycloid formula of mechanism's complexity.
The utility model can adopt following two kinds of technological schemes.
First kind of technological scheme of the present utility model is the angle of attack with helical spring control blade, and it comprises a cover water turbine support, a main shaft, rotating disk case, several blades, sharf and supporting with it sharf bearing, fork, hinged-support, guide rod, helical spring, sliding sleeve and a sleeve base.Wherein, have main shaft that the circle, hollow rotating disk case of rectangular cross section install by the place, medial axis and be inserted in the bearing in the water turbine support, can freely rotate around its medial axis.The sharf spindle nose of longitudinally installing on several the trapezoidal or straight leaf formula of rectangle blades is inserted in the hollow rotating disk case, near in outer circle wall, the sharf bearing of longitudinally installing.Blade exposes outside the rotating disk case, and can freely rotate by sharf and sharf bearing.In the rotating disk case, on the sharf between every group of sharf bearing all along axle radially install a fork that length is suitable, fork should be vertical with the vane airfoil profile section string of a musical instrument.The other end both sides of fork respectively install a hinged-support.Every guide rod of drawing from hinged-support all inserts the sliding sleeve behind the suitable spring of length of suit, rigidity, and each sliding sleeve all can freely rotate in the sleeve base on the appropriate location in being fixed in the rotating disk case by the spindle nose of both sides.
Second kind of technological scheme is the angle of attack with leaf spring control blade, simultaneously in order to reduce the distortion of sharf, also installs sharf and supporting additional at the other end of each blade, promptly adopts the double-layer rotary disc box structure.For this reason, the main shaft in the first kind of technological scheme that extend, the main shaft upper end still is inserted in the bearing hole of water turbine support.And install a cover lower rotary table case again additional in its lower end.In the sharf bearing about sharf spindle noses trapezoidal or the rectangular paddle two ends are inserted into respectively in the two-layer hollow rotating disk case.With fork change into rigidity suitably, can produce the leaf spring of lateral deformation.Cancel hinged-support, guide rod, helical spring, sliding sleeve and sleeve base in first kind of technological scheme.Each spindle nose of sharf all is connected with an end of a leaf spring, the other end is spacing with two leaf spring clip wheels, and as this sliding support of holding of leaf spring, each leaf spring clip wheel all can freely rotate in the clip wheel seat on the appropriate location in being fixed in the rotating disk case by the spindle nose of both sides.
The installation initial position of blade is that the circumference at the string of a musical instrument of vane airfoil profile section and this place of rotating disk case is tangent in two kinds of technological schemes, and promptly fork or leaf spring are in the radial position of circular hollow rotating disk case.
During work, the hydraulic turbine main shaft axis is vertical with the water surface, and blade pulls the plug.Flood tide or trend is radially vertical with main-shaft axis along the rotating disk case at ebb tide.In case trend is arranged, the water turbine that can make with joint efforts of all blade climbing powers rotates, act in rotary course and will change constantly with the state of equilibrium of spring force making a concerted effort on each blade, because sharf is between vane airfoil profile section leading edge and pressure center, the angle of attack of blade also will change constantly.The analysis showed that: capacity usage ratio of the present utility model approaches baroque cycloid formula prismatic blade and becomes angle of attack water turbine.Performance and price comparison cycloid formula prismatic blade water turbine can improve 30%.
Description of drawings
Fig. 1 controls the hydraulic turbine structure schematic representation of attack angle of blade with helical spring
Fig. 2 controls the hydraulic turbine structure A-A sectional drawing of attack angle of blade with helical spring
Fig. 3 controls the hydraulic turbine structure schematic representation of attack angle of blade with leaf spring
Fig. 4 controls the local enlarged front view of water turbine of attack angle of blade with leaf spring
Fig. 5 controls the local amplification plan view of water turbine of attack angle of blade with leaf spring
Three kinds of form water turbine of Fig. 6 capacity usage ratio comparison diagram
Embodiment
Provide two kinds of preferred versions that the utility model is implemented below, and be illustrated in conjunction with the accompanying drawings.
First kind of technological scheme of the present utility model as shown in Figure 1, 2, be the angle of attack with helical spring control blade, it comprises a cover water turbine support (1), a main shaft (2), a rotating disk case (3), several blades (4), sharf (5) and supporting with it sharf bearing (12), fork (6), hinged-support (7), guide rod (8), helical spring (9), sliding sleeve (10) and sleeve base (11).Wherein, have main shaft (2) that the circle, hollow rotating disk case (3) of rectangular cross section install by the place, medial axis and be inserted in the bearing in the water turbine support (1), can freely rotate around its medial axis.Sharf (5) spindle nose of longitudinally installing on several the trapezoidal or straight leaf formula of rectangle blades (4) is inserted in the hollow rotating disk case (3), near in outer circle wall, the sharf bearing (12) of longitudinally installing.Blade exposes outside the rotating disk case, and can freely rotate by sharf (5) and sharf bearing (12).In rotating disk case (3), the sharf (5) between every group of sharf bearing (12) go up all along spool radially install a fork (6) that length is suitable, fork (6) should be vertical with blade (4) the aerofoil profile section string of a musical instrument.The other end both sides of fork (6) respectively install a hinged-support (7).Every guide rod (8) of drawing from hinged-support (7) all inserts the sliding sleeve (10) in length of suit, helical spring (9) back that rigidity is suitable, and each sliding sleeve (10) all can freely rotate in the sleeve base (11) on the appropriate location in being fixed in rotating disk case (3) by the spindle nose of both sides.
Second kind of technological scheme is shown in Fig. 3,4,5, be that it comprises water turbine support (1), main shaft (2 '), top rotary table case (31), several blades (4), sharf (5) and supporting with it sharf bearing (12), leaf spring (6 '), clip wheel (7 ') and clip wheel seat (11 ') with the angle of attack of leaf spring control blade.Main shaft (2) in first kind of technological scheme lengthening is main shaft (2 '), and main shaft (2 ') upper end still is inserted in the bearing hole of water turbine support (1), and installs lower rotary table case (32) additional in its lower end; Fork (6) change into rigidity suitably, can produce the leaf spring (6 ') of lateral deformation.Several sharfs (5) trapezoidal or rectangular paddle (4) two ends are inserted in the sharf bearing (12) in upper and lower two-layer hollow rotating disk case (31) and (32).Cancel hinged-support (7), guide rod (8), spring (9), sliding sleeve (10) and sleeve base (11) in first kind of technological scheme.Each sharf (5) all is connected with an end of a leaf spring (6 '), the other end is spacing with two leaf spring clip wheels (7 '), and as the sliding support of this end of leaf spring (6 '), each leaf spring clip wheel (7 ') all can freely rotate in the clip wheel seat (11 ') on the appropriate location in being fixed in upper and lower rotating disk case (31) and (32) by the spindle nose of both sides.
The installation initial position of blade (4) is that the string of a musical instrument of blade (4) aerofoil profile section and rotating disk case (3) or top rotary table case (31) and lower rotary table case (32) are tangent at the circumference at this place in two kinds of technological schemes, and promptly fork (6) or leaf spring (6 ') are in the radial position of circular hollow rotating disk case (3) or top rotary table case (31) and lower rotary table case (32).
During work, main shaft (2 ') axis of hydraulic turbine main shaft (2) or lengthening is vertical with the water surface, and blade (4) pulls the plug.Flood tide or at ebb tide, trend along rotating disk case (3) or top rotary table case (31) and lower rotary table case (32) radially with main shaft (2) or main shaft (2 ') axis normal that extends.In case trend is arranged, the water turbine that can make with joint efforts of all blades (4) climbing power rotates, in rotary course, act on and change constantly with the state of equilibrium of spring force making a concerted effort on each blade (4), because sharf (5) is between vane airfoil profile section leading edge and pressure center, the angle of attack of blade (4) also changes constantly.The analysis showed that: capacity usage ratio of the present utility model approaches baroque cycloid formula prismatic blade water turbine, referring to accompanying drawing 6.Fig. 6 has provided cycloid formula prismatic blade water turbine, the water turbine of spring control attack angle of blade and the capacity usage ratio correlation curve of stationary blade water turbine, and its corresponding curve label is respectively 6-1,6-2 and 6-3.
The utility model is a kind of variable angle of attack formula straight bladed turbine.It has replaced the blade control mechanism of the variable angle of attack straight bladed turbine of cycloid formula with simple spring mechanism, thereby simplifies the structure, and has reduced the energy consumption when becoming the angle of attack, has increased the reliability of system works, and maintaining is convenient.And in the stable back of direction of tide (still ebb that no matter flood tide), blade can be independently be adjusted to preferred values with the angle of attack of blade at the diverse location of water turbine rotation by spring force, and then improved the capacity usage ratio of water turbine, make it to approach the straight bladed turbine of the variable angle of attack of cycloid formula of mechanism's complexity, performance and price comparison cycloid formula prismatic blade water turbine can improve 30%.
Claims (1)
1. the water machine of spring control attack angle of blade, it comprises water turbine support (1), main shaft (2), rotating disk case (3), several blades (4), sharf (5) and supporting with it sharf bearing (12); It is characterized in that it also is equipped with fork (6), hinged-support (7), guide rod (8), helical spring (9), sliding sleeve (10) and sleeve base (11); Wherein, having main shaft (2) that the circle, hollow rotating disk case (3) of rectangular cross section install by the place, medial axis is inserted in the bearing in the water turbine support (1), can freely rotate around its medial axis, sharf (5) spindle nose of longitudinally installing on several the trapezoidal or straight leaf formula of rectangle blades (4) is inserted in the hollow rotating disk case (3), near in outer circle wall, the sharf bearing (12) of installing vertically, blade exposes outside the rotating disk case, and can freely rotate by sharf (5) and sharf bearing (12); In rotating disk case (3), sharf (5) between every group of sharf bearing (12) go up all along spool radially install a fork (6) that length is suitable, fork (6) should be vertical with blade (4) the aerofoil profile section string of a musical instrument, and the other end both sides of fork (6) respectively install a hinged-support (7); Every guide rod (8) of drawing from hinged-support (7) all inserts the sliding sleeve (10) in length of suit, helical spring (9) back that rigidity is suitable, and each sliding sleeve (10) all can freely rotate in the sleeve base (11) on the appropriate location in being fixed in rotating disk case (3) by the spindle nose of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032390610U CN2658419Y (en) | 2003-02-27 | 2003-02-27 | Water turbine of regulating angle of attack of blade by spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032390610U CN2658419Y (en) | 2003-02-27 | 2003-02-27 | Water turbine of regulating angle of attack of blade by spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658419Y true CN2658419Y (en) | 2004-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032390610U Expired - Lifetime CN2658419Y (en) | 2003-02-27 | 2003-02-27 | Water turbine of regulating angle of attack of blade by spring |
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| Country | Link |
|---|---|
| CN (1) | CN2658419Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337023C (en) * | 2003-02-27 | 2007-09-12 | 哈尔滨工程大学 | Self-adaptable straight-vaned pitch variable water turbine for tidal energy conversion |
| CN101988463A (en) * | 2010-11-24 | 2011-03-23 | 哈尔滨工程大学 | Vertical shaft tidal current generating set |
| CN105003383A (en) * | 2015-08-18 | 2015-10-28 | 武汉理工大学 | Flat water flow power generation device |
| CN105156257A (en) * | 2015-06-23 | 2015-12-16 | 武汉理工大学 | Horizontal type vertical axis low-velocity smooth water flow power generation device |
| CN113915053A (en) * | 2021-10-13 | 2022-01-11 | 杭州江河水电科技股份有限公司 | Tidal current energy power generation device |
-
2003
- 2003-02-27 CN CNU032390610U patent/CN2658419Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337023C (en) * | 2003-02-27 | 2007-09-12 | 哈尔滨工程大学 | Self-adaptable straight-vaned pitch variable water turbine for tidal energy conversion |
| CN101988463A (en) * | 2010-11-24 | 2011-03-23 | 哈尔滨工程大学 | Vertical shaft tidal current generating set |
| CN101988463B (en) * | 2010-11-24 | 2012-07-11 | 哈尔滨工程大学 | Vertical shaft tidal current generating set |
| CN105156257A (en) * | 2015-06-23 | 2015-12-16 | 武汉理工大学 | Horizontal type vertical axis low-velocity smooth water flow power generation device |
| CN105003383A (en) * | 2015-08-18 | 2015-10-28 | 武汉理工大学 | Flat water flow power generation device |
| CN113915053A (en) * | 2021-10-13 | 2022-01-11 | 杭州江河水电科技股份有限公司 | Tidal current energy power generation device |
| CN113915053B (en) * | 2021-10-13 | 2023-09-19 | 杭州江河水电科技股份有限公司 | Tidal current energy power generation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20030227 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |