CN106593746B - Blade and hydroenergy machine - Google Patents
Blade and hydroenergy machine Download PDFInfo
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- CN106593746B CN106593746B CN201710050269.4A CN201710050269A CN106593746B CN 106593746 B CN106593746 B CN 106593746B CN 201710050269 A CN201710050269 A CN 201710050269A CN 106593746 B CN106593746 B CN 106593746B
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- blade body
- blade
- arm
- supporting
- supporting bottom
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 238000000926 separation method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/121—Blades, their form or construction
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses a blade and a hydroenergy machine, which comprises a blade main body and a supporting arm, wherein the section of the blade main body is arc-shaped, the supporting arm comprises a supporting side arm and a supporting bottom arm used for being connected with a rotating wheel, one end of the supporting side arm is connected with the supporting bottom arm, when the supporting bottom arm is connected with the rotating wheel, one end of the supporting side arm, which is far away from the supporting bottom arm, extends outwards along the radial direction of the rotating wheel, the blade main body comprises a first blade main body and a second blade main body, the first blade main body and the second blade main body are respectively connected to two opposite sides of the supporting side arm, a first cavity is formed between the supporting side arm and the first blade main body, and a second cavity is formed between the supporting side arm and the second blade main body. The blade structure obviously increases the mechanical property of the blade main body, and can adapt to the working environment with high water head and large flow.
Description
Technical Field
The invention relates to the field of power machinery, in particular to a blade and a hydroenergy machine.
Background
The water energy machine is also called a water turbine, and is a power machine which converts the energy of water flow into rotary mechanical energy and drives a generator to generate electricity, and the economical efficiency and the safety of the operation of the water energy machine directly influence the economic benefit of a hydropower plant. There are various kinds of mixed flow type, axial flow type, diagonal flow type, through flow type, bucket type, etc. according to the structure of the water turbine. Whichever type of water energy machine is operated by the flow of water to drive its impeller and spindle, the spindle in operation directly or indirectly driving a generator or other machine.
The water energy blade is the most basic and key component in the hydroelectric generator, and is required to have better fatigue strength and mechanical property. The current water energy machine blade structure generally has the defects of large blade tail edge loss, high energy consumption and low working efficiency, and increases the cost of hydroelectric generation. In addition, the mechanical properties of the hydroenergy machine blades are poor, so that the hydroenergy machine cannot adapt to high-power working requirements, and the working efficiency of the hydroenergy machine is limited to a certain extent.
Disclosure of Invention
The invention aims to provide a blade which can well improve the mechanical properties of the blade, and can be applied to high-water-head and high-flow working environments, thereby meeting the high-power production requirements and improving the utilization rate of resources.
The invention further aims to provide the water energy machine, which comprises the blades, has good mechanical properties, can meet the high-power production operation requirement, and remarkably improves the working efficiency of the water energy machine.
The invention is realized in the following way:
the utility model provides a blade, it includes blade main part and support arm, the section of blade main part is the arc, the support arm is including supporting the side arm and being used for the support end arm of being connected with the runner, the one end of supporting the side arm is connected with support end arm, when supporting end arm and being connected in the runner, the one end of supporting end arm is kept away from to support the side wall extends along the radial outside of runner, the blade main part includes first blade main part and second blade main part, first blade main part is connected respectively in the both sides that support the side arm is relative with the second blade main part, support and form first cavity between side arm and the first blade main part, support and form the second cavity between side arm and the second blade main part.
In a preferred embodiment of the present invention, the first blade body and the second blade body have a blade thickness gradually increasing from an end near the support bottom arm to an end far from the support bottom arm.
In a preferred embodiment of the present invention, the thickness of the blade at the end of the first blade body and the second blade body near the support bottom arm is 0.6 to 0.8 times the thickness of the blade at the end far from the support bottom arm.
In a preferred embodiment of the present invention, the first blade body and the second blade body together form a blunt trailing edge structure at an end remote from the support base arm, the blunt trailing edge structure being planar, and the support side arm extending to the blunt trailing edge in a direction remote from the support base arm.
In a preferred embodiment of the present invention, the width of the opening formed at the terminal trailing edge on both sides of the blade body is 0.5 to 0.7 times the maximum blade thickness.
In a preferred embodiment of the present invention, the first blade body and the second blade body together form a blunt trailing edge structure at an end remote from the support base arm, the blunt trailing edge structure being arc-shaped, and the support side arm extending to the blunt trailing edge in a direction remote from the support base arm.
In a preferred embodiment of the present invention, the height of the curved surface of the blunt tip of the blunt trailing edge is 0.2-0.3 times the maximum blade thickness.
In a preferred embodiment of the invention, the first blade body, the second blade body and the support side arms form an M-shaped gap at a top portion remote from the wheel.
In a preferred embodiment of the present invention, the depth of the M-shaped notch is 5-8 times the maximum blade thickness.
A hydroenergy machine comprises a rotating wheel and a plurality of blades, wherein the blades are equidistantly arranged on the circumferential direction of the rotating wheel at intervals.
The embodiment of the invention has the beneficial effects that: the first blade main body and the second blade main body respectively form the first chamber and the second chamber with the supporting side arm, so that the mechanical properties of the blade main body are obviously improved, the blade main body is particularly suitable for working environments with high water head and large flow, the working efficiency of the water energy machine is effectively improved, and the utilization rate of energy sources is also effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a blade according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a planar blunt trailing edge structure according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a cambered blunt trailing edge structure according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a blade according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of an M-shaped notch according to a second embodiment of the present invention.
Icon: 100-leaf blades; 110-a blade body; 112-a first blade body; 114-a second blade body; 120-rotating wheel; 140-supporting arms; 142-supporting a bottom arm; 144-support side arms; 162-a first chamber; 164-a second chamber; 180-blunt trailing edge configuration; 200-leaf blades; 170-M-shaped gap; 172-a first gap; 174-second gap; 176-convex.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in place when the inventive product is used, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
First embodiment
Referring to fig. 1, the present embodiment provides a blade 100, which includes a blade body 110 and a supporting arm 140, wherein the blade bodies 110 are connected to a rotating wheel 120, the cross section of the blade body 110 is arc-shaped, and the supporting arm 140 is disposed in a cavity of the arc-shaped blade body 110.
The support arm 140 includes a support base arm 142 and a support side arm 144, the support base arm 142 is connected to the wheel 120, one end of the support side arm 144 is connected to the support base arm 142, and when the support base arm 142 is connected to the wheel 120, the end of the support side arm 144 remote from the support base arm 142 extends radially outward of the wheel 120, so that the end of the support side arm 144 remote from the support base arm 142 is connected to the end of the blade body 110 remote from the wheel 120.
The blade body 110 includes a first blade body 112 and a second blade body 114, the first blade body 112 and the second blade body 114 being connected to opposite ends of the support side arm 144, respectively. The ends of the first blade body 112 and the second blade body 114 near the support bottom arm 142 are connected to the rotating wheel 120, and the ends of the first blade body 112 and the second blade body 114 far from the support bottom arm 142 are connected to the support side arm 144. A first chamber 162 is formed between the support side arm 144 and the first blade body 112, and a second chamber 164 is formed between the support side arm 144 and the second blade body 114. The provision of the first and second chambers 162, 164 significantly increases the mechanical properties of the blade body 110, enabling adaptation to high head, high flow operating environments.
Specifically, one side of the support side arm 144 connected to the first blade body 112 and the second blade body 114 is an arc-shaped thin wall, and the other side opposite to the arc-shaped thin wall is a rectangular thin wall. Preferably, the first blade body 112 and the second blade body 114 are each of an arc-shaped curved surface structure, and the first blade body 112 and the second blade body 114 are symmetrically disposed with respect to the support side arm 144. The rectangular thin wall is in a plane with the outer walls of the first chamber 162 and the second chamber 164.
Further, the supporting bottom arm 142 may be an arc-shaped thin wall, one end of the supporting bottom arm 142 is connected to the rotating wheel 120, the other end is connected to the supporting side arm 144, and the arc-shaped structure of the supporting bottom arm 142 is adapted to the arc-shaped structure of the blade main body 110 near one end of the rotating wheel 120.
Further, the first blade body 112 and the second blade body 114 gradually increase in blade thickness from the end near the support bottom arm 142 to the end far from the support bottom arm 142, and the blade thickness at the end far from the support bottom arm 142 is the maximum blade thickness. Such a vane structure reduces the weight of the vane at the vane root while guaranteeing the mechanical properties of the vane body 110 far from the end supporting the bottom arm 142, so that the vane root is easier to drive, and the vane body 110 increases the area driven by the water power for the arc structure, thereby increasing the utilization rate of the water power. Preferably, the thickness of the blade at the end of the first blade body 112 and the second blade body 114 close to the supporting bottom arm 142 is 0.6-0.8 times that of the blade at the end far away from the supporting bottom arm 142, so that the blade 100 with the proportional structure has better mechanical properties, and the root resistance of the blade 100 is smaller in the working process, thereby significantly improving the working efficiency.
The thickness of the support side arm 144 is no greater than the thickness of the first blade body 112 or the second blade body 114. Specifically, the support side arm 144 gradually increases in thickness from an end near the support bottom arm 142 to an end distant from the support bottom arm 142. In other embodiments, the thickness of the support side arm 144 may be constant, and preferably, the thickness of the support side arm 144 is equal to the thickness of the blade at the end of the first blade body 112 or the second blade body 114 near the support bottom arm 142, so as to reduce the local separation of the rear part of the suction surface of the blade, make the blade 100 easier to drive, and reduce the drag loss.
Further, the first blade body 112 and the second blade body 114 are made of aluminum alloy, so that the overall mass of the blade body 110 is light, the driving is easy, and the energy loss in the working process is reduced. The material of the supporting bottom arm 142 and the supporting side arm 144 may be aluminum alloy, or other metal materials, such as stainless steel, copper, iron, etc. The first blade body 112 and the second blade body 114 are fixedly connected to the support side arm 144 by welding or the like, and the support side arm 144 is connected to the support bottom arm 142 by a detachable connection.
In other embodiments, the blade body 110 may be an integrally formed arc-shaped cavity, in which the supporting side arm 144 is located, one end of the supporting side arm 144 is connected to the supporting bottom arm 142, the other end of the supporting side arm 144 is connected to the top wall of the end of the blade body 110 away from the rotating wheel 120, and the supporting side arm 144 divides the arc-shaped cavity into two symmetrical cavities.
Further, the first blade body 112 and the second blade body 114 together form a blunt trailing edge structure 180 at the end remote from the support base arm 142, i.e. the lines of shape of the first blade body 112 and the second blade body 114 do not meet at the trailing edge, but rather form an opening, whereby the ends of the two sides of the blade body 110 form a blunt trailing edge structure 180. The arrangement of the blunt trailing edge structure 180 makes the partial separation of the rear part of the suction surface of the blade small, and the sudden expansion loss of the trailing edge is small, thereby reducing the loss of energy and effectively improving the water energy utilization rate.
Specifically, referring to FIG. 2, the blunt trailing edge structure 180 is planar, i.e., straight lines connect the distal trailing edges of the first blade body 112 and the second blade body 114 to form a blunt tip. Preferably, the opening width W of the blunt trailing edge structure 180 that the first blade body 112 and the second blade body 114 together form at the end distal from the support base arm 142 is 0.5-0.7 times the maximum blade thickness, i.e., the opening width W is 0.5-0.7 times the blade thickness at the end distal from the support base arm 142. Thus, while ensuring good mechanical properties of the blade 100, the sudden expansion loss at the tail end trailing edge is reduced, and the energy loss is reduced.
In other embodiments, referring to FIG. 3, the blunt trailing edge structure 180 is a cambered surface, i.e., a rounded line connects the distal trailing edges of the first blade body 112 and the second blade body 114 to form a blunt tip. Preferably, the blunt tip of the blunt trailing edge structure 180 formed by the first blade body 112 and the second blade body 114 together at the end remote from the support base arm 142 has a curved height H that is 0.2-0.3 times the maximum blade thickness, i.e., the curved height H is 0.2-0.3 times the blade thickness at the end remote from the support base arm 142. In this way, the snapback loss at the terminal trailing edge of the blade 100 is made smaller.
The present embodiment also provides a hydraulic machine including a plurality of blades 100, where the plurality of blades 100 are disposed at intervals in the circumferential direction of the rotating wheel 120. Preferably, a plurality of the blades 100 are equally spaced in the circumferential direction of the rotor 120, and the first chamber 162 and the second chamber 164 are oriented in the same direction. The hydraulic energy machine has good mechanical properties, can meet the requirements of high-power production operation, and remarkably improves the working efficiency of the hydraulic energy machine.
The first chamber 162 and the second chamber 164 are formed between the supporting side arm 144 of the blade 100 and the first blade main body 112 and the second blade main body 114, respectively, which significantly increases the mechanical properties of the blade main body 110, and can adapt to the working environment with high water head and large flow. The gradual change of the thickness of the blade reduces the weight of the blade at the root of the blade, so that the root of the blade is easier to drive. The provision of blunt trailing edge structure 180 results in less localized separation of the aft portion of the suction side of the blade and less sudden expansion loss of the trailing edge, reducing energy losses. The above structural features provide the blade 100 with excellent mechanical properties and effectively improve the water power utilization.
Second embodiment
Referring to fig. 4, the present embodiment provides a blade 200, which is substantially the same as the blade 100 of the first embodiment, and the difference is that the blade 200 of the present embodiment does not have the blunt trailing edge structure 180 of the blade 100, but forms an M-shaped notch 170 at the top far from the rotating wheel 120 by the first blade body 112, the second blade body 114 and the supporting side arm 144.
Further, referring to fig. 5, the m-shaped notch 170 includes a first notch 172 and a second notch 174, the first notch 172 is formed by the first blade body 112 and the support side arm 144, and the second notch 174 is formed by the second blade body 114 and the support side arm 144. The provision of the M-shaped notch 170 provides for a small localized separation of the suction side aft portions of the first blade body 112 and the second blade body 114, reducing energy losses and thus effectively increasing the operational efficiency of the blade 200.
Further, the M-shaped notch 170 further includes a protrusion 176, where the first notch 172 and the second notch 174 are symmetrically disposed with respect to the protrusion 176, and the protrusion 176 is connected to an end of the support side arm 144 away from the support bottom arm 142. The convex portion 176 has an arc-shaped curved surface structure, so that sudden expansion loss of the tail edges of the first blade main body 112 and the second blade main body 114 can be effectively reduced, and the utilization rate of energy sources can be improved.
Further, the tops of the first notch 172 and the second notch 174 are all arc-shaped excessively, so as to reduce the sudden expansion loss of the tail edge, and the notch depth of the first notch 172 is D 1 The second notch 174 has a notch depth D 2 . Notch depth D of first notch 172 1 Notch depth D of second notch 174 2 Are all 5-8 times of the maximum blade thickness, namely D 1 And D 2 Are each 5-8 times the thickness of the blade at the end remote from the support base arm 142. Such a structural proportion of the M-shaped notch 170 results in less localized separation of the aft portion of the suction side of the first blade body 112 and the second blade body 114 and less energy loss.
The present embodiment also provides a hydraulic machine having the above structural features, and a plurality of the blades 200 are disposed at intervals in the circumferential direction of the rotating wheel 120. Preferably, a plurality of the blades 200 are equally spaced in the circumferential direction of the rotor 120, and the first chamber 162 and the second chamber 164 are oriented in the same direction. The hydraulic energy machine has good mechanical property, small tail edge sudden expansion loss, and can meet the high-power production operation requirement, and the working efficiency of the hydraulic energy machine is obviously improved.
In summary, in the structure of the vane 100 according to the present invention, the first chamber 162 and the second chamber 164 are formed between the supporting side arm 144 and the first vane main body 112 and the second vane main body 114, respectively, so that the mechanical properties of the vane main body 110 are significantly increased, and the vane can adapt to the working environment with high water head and high flow. The gradual change of the thickness of the blade reduces the weight of the blade at the root of the blade, so that the root of the blade is easier to drive. The provision of blunt trailing edge structure 180 results in less localized separation of the aft portion of the suction side of the blade and less sudden expansion loss of the trailing edge, reducing energy losses. In the construction of the blade 200, the first blade body 112, the second blade body 114 and the support side arms 144 form an M-shaped notch 170 at the top away from the rotor 120, also resulting in a small localized separation of the rear of the suction side of the blade, reducing energy losses. The hydraulic energy machine with the structure can adapt to the working environment with high water head and large flow, has small energy loss and remarkably improves the working efficiency of the hydraulic energy machine.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The blade is characterized by comprising a blade body and a supporting arm, wherein the cross section of the blade body is arc-shaped, the supporting arm comprises a supporting side arm and a supporting bottom arm used for being connected with a rotating wheel, one end of the supporting side arm is connected with the supporting bottom arm, when the supporting bottom arm is connected with the rotating wheel, one end of the supporting side arm, far away from the supporting bottom arm, extends outwards along the radial direction of the rotating wheel, the blade body comprises a first blade body and a second blade body, the first blade body and the second blade body are respectively connected to two opposite sides of the supporting side arm, a first cavity is formed between the supporting side arm and the first blade body, and a second cavity is formed between the supporting side arm and the second blade body;
the thickness of the first blade body and the second blade body gradually increases from one end close to the supporting bottom arm to one end far away from the supporting bottom arm, and the thickness of the first blade body and the second blade body at one end close to the supporting bottom arm is 0.6-0.8 times of the thickness of the first blade body and the second blade body at one end far away from the supporting bottom arm;
the thickness of the supporting side arm gradually increases from one end close to the supporting bottom arm to one end far away from the supporting bottom arm, or the thickness of the supporting side arm is equal to the thickness of the first blade body or the second blade body close to one end of the supporting bottom arm;
the first blade body and the second blade body form a blunt tail edge structure at one end far away from the supporting bottom arm, the blunt tail edge structure is a plane, the supporting side arms extend to the blunt tail edge along the direction far away from the supporting bottom arm, and the width of an opening formed at the tail end tail edges at two sides of the blade body is 0.5-0.7 times of the maximum blade thickness; or the first blade body and the second blade body form a blunt tail edge structure together at one end far away from the supporting bottom arm, the blunt tail edge structure is arc-shaped, the supporting side arm extends to the blunt tail edge along the direction far away from the supporting bottom arm, and the curved surface height of the blunt tip of the blunt tail edge is 0.2-0.3 times of the maximum blade thickness.
2. The blade of claim 1, wherein the first blade body, the second blade body, and the support side arms form an M-shaped gap at a top portion remote from the wheel.
3. The blade of claim 2, wherein the M-shaped notch has a notch depth of 5-8 times the maximum blade thickness.
4. A hydroenergy machine, characterized in that it comprises the runner and a plurality of the blades as set forth in any one of claims 1 to 3, a plurality of the blades being equidistantly spaced in the circumferential direction of the runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710050269.4A CN106593746B (en) | 2017-01-23 | 2017-01-23 | Blade and hydroenergy machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710050269.4A CN106593746B (en) | 2017-01-23 | 2017-01-23 | Blade and hydroenergy machine |
Publications (2)
| Publication Number | Publication Date |
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| CN106593746A CN106593746A (en) | 2017-04-26 |
| CN106593746B true CN106593746B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710050269.4A Active CN106593746B (en) | 2017-01-23 | 2017-01-23 | Blade and hydroenergy machine |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734041A (en) * | 2012-05-25 | 2012-10-17 | 西华大学 | Tangential turbine runner |
| US10560043B2 (en) * | 2014-11-13 | 2020-02-11 | Bruno BERGMAN | Floating device generator |
| CN105422481A (en) * | 2015-11-30 | 2016-03-23 | 王庆昌 | Exhaust assembly of water-drive and non-electric exhaust fan |
| CN106014834A (en) * | 2016-06-25 | 2016-10-12 | 郭远军 | Efficient forward loading water bucket type hydraulic generator |
| CN206513494U (en) * | 2017-01-23 | 2017-09-22 | 成都天府新区河川科技有限公司 | A kind of blade and engine using hydrostatic thrust |
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| CN106593746A (en) | 2017-04-26 |
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