CN118030371A - Lightweight blade for vertical axis breeze generator and preparation method - Google Patents
Lightweight blade for vertical axis breeze generator and preparation method Download PDFInfo
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- CN118030371A CN118030371A CN202410127514.7A CN202410127514A CN118030371A CN 118030371 A CN118030371 A CN 118030371A CN 202410127514 A CN202410127514 A CN 202410127514A CN 118030371 A CN118030371 A CN 118030371A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 229910000838 Al alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 description 5
- 239000012634 fragment Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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 belongs to the technical field of wind driven generators and discloses a lightweight blade for a vertical axis generator and a preparation method thereof, wherein the lightweight blade for the vertical axis generator comprises a front edge section and a rear edge section, the front edge section and the rear edge section are distributed at intervals, a supporting framework is arranged between the front edge section and the rear edge section, an outer mask is covered on the outer surface of the supporting framework, clamping grooves are formed in the front edge section, the rear edge section and the supporting framework, two side edges of the outer mask are fixedly arranged in the corresponding clamping grooves respectively, and the outer mask is fixedly connected with the supporting framework to cover the supporting framework inside.
Description
Technical Field
The invention belongs to the technical field of wind driven generators, and particularly relates to a lightweight blade for a vertical axis breeze driven generator and a preparation method thereof.
Background
In order to better utilize wind energy, various wind power generation systems are designed, and from the structural aspect, a horizontal axis wind turbine with a wind turbine rotating shaft in a horizontal direction in space and a vertical axis wind turbine with a rotating shaft in a vertical direction in space are mainly designed, wherein for a vertical axis wind turbine of the vertical axis wind turbine, the vertical axis wind turbine can be divided into two main types, one type is a lift type wind turbine, the other type is a resistance type wind turbine, and the principle of driving the wind turbine to rotate is different; although the lift force type wind wheel and the resistance type wind wheel are vertical axis wind wheels, the principle of wind driving wind wheels is not only completely different, but also has great diversity of effects.
The blade of the resistance type wind wheel can be a door plate; because the drag coefficients of the left face and the right face of the wind wheel are different, the wind pressure obtained by the face with the larger drag coefficient is larger, and the wind pressure difference enables the wind wheel to rotate.
The overall structure of the existing wind turbine blade is various, such as the patent application number is: CN201019114068.1 discloses a blade structure of a wind wheel of a vertical axis wind driven generator, which comprises a framework forming the shape of a blade and a skin fixed outside the framework, wherein the shape of the blade is a vertical column, the horizontal section of the blade is the section shape of an aircraft wing, namely, the outward outer surface of the blade is a streamline cambered surface, the smooth transition between the outer surface and the opposite inner surface forms a larger windward end, namely, the head of the blade and a smaller tail.
The prior blade structure has poor overall structural stability, low strength and reduced use effect, and the blades on the prior vertical shaft wind wheel are all made of glass fiber resin (glass fiber reinforced plastic) or carbon fiber resin materials, and environmental pollution exists in the production and manufacturing process and the later scrapping treatment.
Moreover, the blades made of the glass fiber reinforced plastic are heavy in weight, so that the breeze starting and the high-efficiency rotation working of the wind wheel are not facilitated; the product is easy to age, and has short service life; the blade made of carbon fiber has the problems of high manufacturing cost and low cost performance, although the weight is light and the service life is long.
Disclosure of Invention
The invention aims to solve the main technical problems of providing a lightweight blade for a vertical axis breeze generator and a preparation method thereof, wherein the lightweight blade has low requirements on wind speed, can be started in a breeze environment, greatly increases the generated energy in a low wind speed area, has high strength and good heat treatment performance, has light overall weight, can improve mechanical strength, and improves the precision and consistency of products.
In order to solve the technical problems, the invention provides the following technical scheme:
The utility model provides a light-weight blade for vertical axis breeze generator, includes leading edge section bar and trailing edge section bar, and leading edge section bar and trailing edge section bar are laid for the interval, are provided with braced frame between leading edge section bar and the trailing edge section bar, and braced frame's surface is last to be covered with outer mask, all is provided with the draw-in groove on leading edge section bar, trailing edge section bar and the braced frame, and the both sides limit of outer mask is fixed mounting respectively in corresponding draw-in groove, and outer mask is fixed connection for covering braced frame inside with braced frame.
The following is a further optimization of the above technical solution according to the present invention:
the front edge section bar is integrally made of high-performance aluminum alloy materials, the outer surface of the front edge section bar is an arc surface, the inner part of the front edge section bar is of a hollow structure, and a plurality of first reinforcing ribs are arranged in the inner part of the front edge section bar.
Further optimizing: the front edge section bar is close to a side of the supporting framework and is a plane, a plurality of positioning bulges are arranged on the plane, a first positioning plate is uniformly connected to the plane and close to the upper side and the lower side of the plane, and a first positioning part is formed between the outer side of the first positioning plate and the outer surface of the front edge section bar.
Further optimizing: the rear edge section bar is integrally made of high-performance aluminum alloy materials, the inside of the rear edge section bar is of a hollow structure, and a plurality of second reinforcing ribs are arranged in the rear edge section bar.
Further optimizing: the side surface of the trailing edge section bar, which is close to the supporting framework, is an inclined surface, a second locating plate is uniformly connected to the inclined surface and is close to the upper side and the lower side of the inclined surface, and a second locating part is formed between the outer side surface of the second locating plate and the upper outer surface and the lower outer surface of the trailing edge section bar.
Further optimizing: the support framework comprises a plurality of parallel keel brackets which are distributed at intervals, and two ends of the keel brackets are respectively fixedly connected with the corresponding front edge section bar and the corresponding rear edge section bar; a plurality of weight-reducing grooves are formed in the keel support, and third reinforcing ribs are arranged between two adjacent weight-reducing grooves.
Further optimizing: a positioning groove is formed in one end part, close to the front edge section bar, of the keel bracket, and the positioning groove is matched with a corresponding positioning protrusion for use; the keel bracket is close to the inclined plane at one end of the trailing edge section bar, and the inclined plane is matched with the inclined plane on the trailing edge section bar.
Further optimizing: the upper and lower surface of fossil fragments support is gone up and is all offered a plurality of mounting grooves, and the mounting groove internal fixation who lies in on same straight line on a plurality of fossil fragments supports has a fossil fragments section bar, and the up end of fossil fragments section bar is close to its both sides position punishment and is provided with the constant head tank.
Further optimizing: the keel supports are provided with a plurality of circular holes near the upper surface and the lower surface of the keel supports, and a tubular column is fixedly arranged in the circular holes on the same straight line on the keel supports.
The invention also provides a preparation method of the lightweight blade for the vertical axis breeze generator, which is used for preparing the lightweight blade for the vertical axis breeze generator and comprises the following steps:
s1, designing a production drawing of a lightweight blade for a vertical axis breeze generator to be produced, and determining a front edge section bar, a rear edge section bar, a keel section bar and a keel bracket; specific production drawings of the outer mask and the tubular column;
s2, integrally manufacturing the front edge section bar, the rear edge section bar and the keel section bar by adopting aluminum alloy materials according to the production drawing;
s3, the keel bracket and the outer mask are manufactured by high-precision cutting through a laser cutting machine according to a production drawing;
S4, firstly, arranging keel brackets according to the interval between two adjacent keel brackets on a production drawing, wherein the plurality of keel brackets are arranged in parallel, and then, a tubular column is penetrated in a circular hole positioned on the same straight line on the plurality of keel brackets, and welding and fixing are carried out between the tubular column and the keel brackets by adopting a laser welding machine;
S5, penetrating a keel section bar into the mounting grooves on the same straight line on the plurality of keel brackets, and welding and fixing the keel section bar and the keel brackets by adopting a laser welding machine;
s6, arranging the front edge profile on the front sides of the keel brackets, butting the positioning protrusions on the front edge profile with the positioning grooves, and welding and fixing the joint of the front edge profile and the keel brackets by using a laser welding machine;
S7, arranging the trailing edge section bars on the rear sides of the keel brackets, butting the inclined surfaces on the keel brackets with the inclined surfaces on the trailing edge section bars, and then adopting a laser welding machine to weld and fix the joint of the trailing edge section bars and the inclined surfaces;
S8, an outer mask is arranged between the front edge section bar and the corresponding keel section bar; an outer mask is arranged between two adjacent keel sections; an outer mask is arranged between the trailing edge section bar and the corresponding keel section bar, and the outer mask is fixedly connected with the corresponding leading edge section bar, keel section bar and trailing edge section bar.
The vertical shaft breeze generator is ingenious in conception and reasonable in structure, the light-weight blades are integrally made of the high-performance aluminum alloy materials, so that the vertical shaft breeze generator has high strength and good heat treatment performance, the light-weight blades made of the high-performance aluminum alloy materials can greatly lighten the integral weight of the vertical shaft wind wheel, improve the mechanical strength, improve the precision and consistency of products, enable the vertical shaft wind wheel to realize breeze starting, improve the generating capacity and the generating efficiency, greatly improve the stability, safe operation and the service life (the design service life is more than 30 years) of the vertical shaft wind wheel.
Each section bar and section bar in this lightweight blade adopt the mode of joint to assemble at the piece, make equipment simple to operate, adopt laser welding's mode to carry out the welding operation to each junction after the equipment is accomplished, can improve its overall structure intensity to the both sides limit of outer mask 15 is fixed mounting respectively in corresponding draw-in groove, makes the surface of this lightweight blade level and smooth.
By adopting the technical scheme, the prepared lightweight blade has high mechanical strength and high geometric dimension precision; compared with glass fiber reinforced plastic material, the weight is reduced by 70%, the strength is improved by more than 2 times, the precision is improved by 3-5 times, and the service life is prolonged by more than 5 times.
The invention will be further described with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a supporting framework according to an embodiment of the present invention;
FIG. 3 is a schematic view of a support frame according to another embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 6 at A;
FIG. 5 is a partial enlarged view at B in FIG. 6;
Figure 6 is a schematic view of the structure of a keel frame according to an embodiment of the invention.
In the figure: 11-leading edge profile; 12-trailing edge profile; 13-keel section bar; 14-keel brackets; 15-an outer mask; 16-pipe column; 17-a first reinforcing rib; 18-positioning protrusions; 19-a first positioning plate; 20-second reinforcing ribs; 21-a second positioning plate; 22-a weight-reducing groove; 23-positioning grooves; 24-mounting grooves; 25-positioning grooves; 26-a circular hole; 27-a first connection socket.
Detailed Description
As shown in fig. 1-6: the utility model provides a lightweight blade for vertical axis breeze generator, includes leading edge section bar 11 and trailing edge section bar 12, leading edge section bar 11 and trailing edge section bar 12 are the interval and lay, be provided with braced frame between leading edge section bar 11 and the trailing edge section bar 12, the surface of braced frame is last to be covered with outer mask 15, all is provided with the draw-in groove on leading edge section bar 11, trailing edge section bar 12 and the braced frame, and the both sides limit of outer mask 15 is fixed mounting respectively in corresponding draw-in groove, and outer mask 15 is fixed connection for covering braced frame inside with braced frame.
The inner and outer surfaces of the lightweight blade for the vertical axis breeze generator are asymmetric double arc surfaces, and the whole structure of the lightweight blade is streamline.
When the vertical-axis breeze-driven generator is used, the lightweight blades are installed on the wind wheel of the vertical-axis breeze-driven generator, natural wind acts on the outer arc surfaces of the lightweight blades, acting force of the wind pushes the lightweight blades to rotate, the lightweight blades rotate to drive the wind wheel to rotate, and further the rotation power driving motor of the vertical-axis wind wheel is driven to work, so that the vertical-axis breeze-driven generator is convenient to use.
The front edge section bar 11 is integrally made of high-performance aluminum alloy materials, the outer surface of the front edge section bar 11 is an arc surface, the inner portion of the front edge section bar 11 is of a hollow structure, and a plurality of first reinforcing ribs 17 are arranged in the inner portion of the front edge section bar 11.
In this embodiment, the first reinforcing ribs 17 are disposed along the length direction of the front edge section 11, and a plurality of first reinforcing ribs 17 are disposed at intervals along the height direction of the front edge section 11.
The front edge profile 11 is provided with a plurality of positioning protrusions 18, wherein one side surface, close to the supporting framework, of the front edge profile 11 is a plane, the positioning protrusions 18 are distributed at intervals along the height direction of the plane, and the positioning protrusions 18 are distributed along the length direction of the front edge profile 11.
The front edge section bar 11 is connected with a first positioning plate 19 uniformly at a position close to the upper side and the lower side of the supporting framework on a side plane close to the supporting framework.
The outer side surface of the first positioning plate 19 and the outer surface of the front edge section bar 11 are distributed at intervals, the interval distance between the outer side surface of the first positioning plate 19 and the outer surface of the front edge section bar 11 is matched with the thickness of the outer mask plate 15, and a first positioning part is formed between the outer side surface of the first positioning plate 19 and the outer surface of the front edge section bar 11.
The trailing edge section bar 12 is integrally made of high-performance aluminum alloy materials, the inside of the trailing edge section bar 12 is of a hollow structure, and a plurality of second reinforcing ribs 20 are arranged in the trailing edge section bar 12.
In this embodiment, the second reinforcing ribs 20 are disposed along the length direction of the trailing edge section 12, and a plurality of second reinforcing ribs 20 are disposed at intervals along the width direction of the trailing edge section 12.
One side surface of the trailing edge section bar 12, which is close to the supporting framework, is an inclined surface, and the inclined surface is used for increasing the connection area between the trailing edge section bar 12 and the supporting framework.
The rear edge section bar 12 is uniformly connected with a second positioning plate 21 on the inclined plane of one side close to the supporting framework and close to the upper side and the lower side of the supporting framework.
The outer side surface of the second positioning plate 21 and the upper and lower outer surfaces of the trailing edge section bar 12 are arranged at intervals, the interval distance between the outer side surface of the second positioning plate 21 and the upper and lower outer surfaces of the trailing edge section bar 12 is matched with the thickness of the outer mask plate 15, and a second positioning part is formed between the outer side surface of the second positioning plate 21 and the upper and lower outer surfaces of the trailing edge section bar 12.
The supporting framework comprises a plurality of parallel keel brackets 14 which are distributed at intervals, and two ends of the keel brackets 14 are respectively fixedly connected with the corresponding front edge profile 11 and rear edge profile 12.
In this embodiment, the exterior surface shape of the keel frame 14 matches the exterior surface shape of the lightweight blade design.
The keel support 14 is provided with a plurality of weight-reducing grooves 22, the weight-reducing grooves 22 are distributed at intervals, a third reinforcing rib is arranged between two adjacent weight-reducing grooves 22, and the weight-reducing grooves 22 penetrate through two side surfaces of the keel support 14.
A positioning groove 23 is formed in one end portion, close to the front edge section bar 11, of the keel bracket 14, and the positioning groove 23 is matched with the corresponding positioning protrusion 18 for use.
Through the cooperation of the positioning groove 23 and the positioning protrusion 18, the keel bracket 14 can be conveniently assembled on the front edge profile 11 near one end of the front edge profile 11, so that the keel bracket 14 can be conveniently assembled and installed, and the keel bracket 14 can be conveniently positioned.
The keel bracket 14 is fixedly connected with the front edge profile 11 in a welding mode.
The keel bracket 14 is inclined at one end part close to the trailing edge section bar 12, and the inclined surface is matched with the inclined surface on the trailing edge section bar 12.
The keel bracket 14 is fixedly connected with the trailing edge profile 12 by welding.
And the connection area between the keel bracket 14 and the trailing edge profile 12 can be increased through the matching of the inclined planes, so that the connection strength between the keel bracket and the trailing edge profile 12 is improved.
A plurality of mounting grooves 24 are formed in the upper and lower outer surfaces of the keel frame 14, and the plurality of mounting grooves 24 are distributed at intervals.
After the two ends of the keel supports 14 are fixedly connected with the corresponding front edge profile 11 and rear edge profile 12, a keel profile 13 is fixedly installed in the installation groove 24 on the same straight line on the keel supports 14, and the keel profile 13 is fixedly connected with the keel supports 14.
In this embodiment, the keel section 13 and the keel bracket 14 are fixedly connected by welding.
The cross section of the keel section bar 13 is in a trapezoid table shape with two sections integrally connected, the upper end face of the keel section bar 13 extends to the upper side of the keel bracket 14, and positioning grooves 25 are respectively formed in positions, close to two sides, of the upper end face of the keel section bar 13.
The depth of the locating groove 25 is matched with the thickness of the outer mask 15, and the inner bottom surface of the locating groove 25 is flush with the outer surface of the keel section bar 13.
A plurality of circular holes 26 are formed in the keel frame 14 at positions close to the upper surface, the lower surface and the outer surface of the keel frame, and the circular holes 26 are distributed at intervals.
After the two ends of the keel brackets 14 are fixedly connected with the corresponding front edge section bar 11 and rear edge section bar 12, a tubular column 16 is fixedly installed in a circular hole 26 positioned on the same straight line on the plurality of keel brackets 14, and the tubular column 16 is fixedly connected with the keel brackets 14.
In this embodiment, the pipe string 16 and the keel frame 14 are fixedly connected by welding.
An outer mask 15 is arranged between the front edge section 11 and the corresponding keel section 13, and two side edges of the outer mask 15 are fixedly connected with the corresponding first positioning plate 19 and the corresponding positioning groove 25 respectively.
An outer mask 15 is arranged between two adjacent keel sections 13, and two side edges of the outer mask 15 are fixedly connected with positioning grooves 25 on the corresponding keel sections 13 respectively.
An outer mask 15 is arranged between the trailing edge section 12 and the corresponding keel section 13, and two side edges of the outer mask 15 are fixedly connected with the corresponding second positioning plate 21 and the corresponding positioning groove 25 respectively.
By means of the design, the supporting framework can be assembled through the keel section bar 13, the keel bracket 14 and the pipe column 16, and the lightweight blade can be assembled through the supporting framework front edge section bar 11, the rear edge section bar 12 and the outer mask 15, so that the lightweight blade is simple in integral structure and convenient to assemble and produce.
In this embodiment, the keel section 13, the keel bracket 14 and the pipe column 16 are all integrally made of high-performance aluminum alloy materials.
In this embodiment, this lightweight blade wholly adopts high performance aluminum alloy material to make and have high strength and good heat treatment performance, and this lightweight blade that adopts high performance aluminum alloy material to make can greatly lighten the whole weight of vertical axis wind wheel, has improved mechanical strength, has improved the precision and the uniformity of product, makes vertical axis wind wheel can realize breeze start, has improved generated energy and generating efficiency, very big improvement vertical axis wind wheel's stationarity, safe operation and life (design life is more than 30 years).
Each section bar and section bar in this lightweight blade adopt the mode of joint to assemble at the piece, make equipment simple to operate, adopt welded mode to carry out the welding operation to each junction after the equipment is accomplished, can improve its overall structure intensity to the both sides limit of outer mask 15 is fixed mounting respectively in corresponding draw-in groove, makes the surface of this lightweight blade level and smooth.
The lightweight blade has high mechanical strength and high geometric dimension precision; compared with glass fiber reinforced plastic material, the weight is reduced by 70%, the strength is improved by more than 2 times, the precision is improved by 3-5 times, and the service life is prolonged by more than 5 times.
The lightweight blade is fixedly provided with a first connecting seat 27, and the first connecting seat 27 is fixedly connected with the corresponding keel section bar 13 and keel bracket 14.
In this embodiment, the first connection seat 27 is fixedly connected with the corresponding keel section 13 and keel frame 14 by welding.
The invention also provides a preparation method of the lightweight blade for the vertical axis breeze generator, which can be used for preparing the lightweight blade for the vertical axis breeze generator, and comprises the following steps:
s1, firstly designing a production drawing of a lightweight blade for a vertical axis breeze generator to be produced, and determining a front edge profile 11, a rear edge profile 12, a keel profile 13 and a keel bracket 14; specific production drawings of the outer mask 15 and the tubular column 16.
S2, the front edge section bar 11, the rear edge section bar 12 and the keel section bar 13 are integrally made of aluminum alloy materials according to the production drawing.
S3, the keel bracket 14 and the outer mask 15 are manufactured by high-precision cutting through a laser cutting machine according to the production drawing.
The keel frame 14 and the outer mask 15 are made of aluminum alloy materials.
S4, firstly, arranging the keel supports 14 according to the interval between two adjacent keel supports 14 on the production drawing, wherein the keel supports 14 are arranged in parallel, then, a pipe column 16 is arranged in a penetrating way in a circular hole 26 positioned on the same straight line on the keel supports 14, and the pipe column 16 and the keel supports 14 are welded and fixed by a laser welding machine.
S5, a keel section bar 13 is arranged in the mounting groove 24 on the same straight line on the plurality of keel brackets 14 in a penetrating mode, and a laser welding machine is used for welding and fixing the keel section bar 13 and the keel brackets 14.
S6, arranging the front edge section bars 11 on the front sides of the keel brackets 14, butting the positioning protrusions 18 on the front edge section bars 11 with the positioning grooves 23, and then adopting a laser welding machine to weld and fix the joint of the front edge section bars 11 and the keel brackets 14.
And S7, arranging the trailing edge section bars 12 on the rear sides of the keel brackets 14, butting the inclined surfaces on the keel brackets 14 with the inclined surfaces on the trailing edge section bars 12, and then adopting a laser welding machine to weld and fix the joint of the trailing edge section bars and the trailing edge section bars.
S8, an outer mask 15 is arranged between the front edge section 11 and the corresponding keel section 13; an outer mask 15 is arranged between two adjacent keel sections 13; an outer skin 15 is arranged between the trailing edge profile 12 and the corresponding keel profile 13, said outer skin 15 being fixedly connected to the corresponding leading edge profile 11, keel profile 13 and trailing edge profile 12.
In step S8, two side edges of the outer mask 15 are respectively and fixedly mounted in corresponding clamping grooves, so that the outer surface of the lightweight blade is flat, and the outer mask 15 is welded by adopting a double-sided synchronous welding method, so that the outer mask 15 is fixedly connected with the corresponding front edge profile 11, keel profile 13 and rear edge profile 12.
In step S8, the outer mask 15 and the corresponding leading edge profile 11, keel profile 13 and trailing edge profile 12 may be fixedly connected by rivet riveting, and structural adhesive is coated at the joints of the outer mask 15 and the keel profile 13 and the leading edge profile 11 and the trailing edge profile 12, and the outer mask 15 is fixedly mounted on the leading edge profile 11, the keel profile 13 and the trailing edge profile 12 through cooperation of the structural adhesive and riveting, so that assembly and installation are facilitated.
By adopting the technical scheme, the prepared lightweight blade has high mechanical strength and high geometric dimension precision; compared with glass fiber reinforced plastic material, the weight is reduced by 70%, the strength is improved by more than 2 times, the precision is improved by 3-5 times, and the service life is prolonged by more than 5 times.
Alterations, modifications, substitutions and variations of the embodiments herein will be apparent to those of ordinary skill in the art in light of the teachings of the present invention without departing from the spirit and principles of the invention.
Claims (10)
1. A lightweight blade for a vertical axis breeze generator is characterized in that: including leading edge section bar (11) and trailing edge section bar (12), leading edge section bar (11) and trailing edge section bar (12) are laid for the interval, are provided with braced frame between leading edge section bar (11) and trailing edge section bar (12), and the surface of braced frame is last to be covered with outer mask (15), all is provided with the draw-in groove on leading edge section bar (11), trailing edge section bar (12) and the braced frame, and the both sides limit of outer mask (15) is fixed mounting respectively in corresponding draw-in groove, and outer mask (15) are fixed connection and are used for covering braced frame inside with braced frame.
2. A lightweight blade for a vertical axis breeze generator as defined in claim 1, wherein: the front edge section bar (11) is integrally made of high-performance aluminum alloy materials, the outer surface of the front edge section bar (11) is an arc surface, the inside of the front edge section bar (11) is of a hollow structure, and a plurality of first reinforcing ribs (17) are arranged in the front edge section bar (11).
3. A lightweight blade for a vertical axis breeze electric machine as defined in claim 2, wherein: the front edge section bar (11) is close to a side face of the supporting framework and is a plane, a plurality of positioning bulges (18) are arranged on the plane, a first positioning plate (19) is uniformly connected to the plane and is close to the upper side and the lower side of the plane, and a first positioning part is formed between the outer side face of the first positioning plate (19) and the outer surface of the front edge section bar (11).
4. A lightweight blade for a vertical axis breeze generator as defined in claim 3, wherein: the rear edge section bar (12) is integrally made of high-performance aluminum alloy materials, the inside of the rear edge section bar (12) is of a hollow structure, and a plurality of second reinforcing ribs (20) are arranged in the rear edge section bar (12).
5. A lightweight blade for a vertical axis breeze generator as defined in claim 4, wherein: one side surface of the trailing edge section bar (12) close to the supporting framework is an inclined surface, a second positioning plate (21) is uniformly connected to the inclined surface and close to the upper side and the lower side of the inclined surface, and a second positioning part is formed between the outer side surface of the second positioning plate (21) and the upper outer surface and the lower outer surface of the trailing edge section bar (12).
6. A lightweight blade for a vertical axis breeze electric machine as defined in claim 5, wherein: the support framework comprises a plurality of parallel keel brackets (14) which are distributed at intervals, and two ends of each keel bracket (14) are fixedly connected with the corresponding front edge section bar (11) and the corresponding rear edge section bar (12) respectively; the keel bracket (14) is provided with a plurality of weight-reducing grooves (22), and a third reinforcing rib is arranged between two adjacent weight-reducing grooves (22).
7. A lightweight blade for a vertical axis breeze generator as defined in claim 6, wherein: a positioning groove (23) is formed in one end part, close to the front edge section bar (11), of the keel bracket (14), and the positioning groove (23) is matched with a corresponding positioning protrusion (18) for use; the keel bracket (14) is inclined at one end part close to the trailing edge section bar (12), and the inclined surface is matched with the inclined surface on the trailing edge section bar (12).
8. A lightweight blade for a vertical axis breeze electric machine as defined in claim 7, wherein: a plurality of mounting grooves (24) are formed in the upper surface and the lower surface of the keel support (14), a keel section bar (13) is fixedly mounted in the mounting grooves (24) which are positioned on the same straight line on the keel supports (14), and positioning grooves (25) are respectively formed in the positions, close to the two sides, of the upper end face of the keel section bar (13).
9. A lightweight blade for a vertical axis breeze electric machine as defined in claim 8, wherein: a plurality of circular holes (26) are formed in the positions, close to the upper surface, the lower surface and the outer surface of the keel support (14), and a tubular column (16) is fixedly installed in the circular holes (26) which are positioned on the same straight line.
10. A method for manufacturing a lightweight blade for a vertical axis breeze generator, for manufacturing a lightweight blade for a vertical axis breeze generator as defined in claim 9, comprising: the preparation method comprises the following steps:
S1, firstly designing a production drawing of a lightweight blade for a vertical axis breeze generator to be produced, and determining a front edge profile (11), a rear edge profile (12), a keel profile (13) and a keel bracket (14); specific production drawings of the outer mask (15) and the tubular column (16);
S2, the front edge section bar (11), the rear edge section bar (12) and the keel section bar (13) are integrally made of aluminum alloy materials according to production drawings;
s3, the keel bracket (14) and the outer mask (15) are manufactured by high-precision cutting through a laser cutting machine according to the production drawing;
S4, firstly, arranging keel brackets (14) according to the interval between two adjacent keel brackets (14) on a production drawing, arranging a plurality of keel brackets (14) in parallel, then penetrating a tubular column (16) in a circular hole (26) positioned on the same straight line on the plurality of keel brackets (14), and adopting a laser welding machine to weld and fix the tubular column (16) and the keel brackets (14);
S5, penetrating a keel section bar (13) in the mounting grooves (24) which are positioned on the same straight line on the plurality of keel brackets (14), and welding and fixing the keel section bar (13) and the keel brackets (14) by adopting a laser welding machine;
S6, arranging the front edge section bars (11) on the front sides of the keel brackets (14), butting positioning protrusions (18) on the front edge section bars (11) with the positioning grooves (23), and welding and fixing the connection parts of the front edge section bars (11) and the keel brackets (14) by using a laser welding machine;
S7, arranging the trailing edge section bars (12) on the rear sides of the keel brackets (14), butting the inclined surfaces on the keel brackets (14) with the inclined surfaces on the trailing edge section bars (12), and then adopting a laser welding machine to weld and fix the joint of the trailing edge section bars and the inclined surfaces;
S8, an outer mask (15) is arranged between the front edge section bar (11) and the corresponding keel section bar (13); an outer mask (15) is arranged between two adjacent keel sections (13); an outer mask (15) is arranged between the trailing edge section bar (12) and the corresponding keel section bar (13), and the outer mask (15) is fixedly connected with the corresponding leading edge section bar (11), the corresponding keel section bar (13) and the corresponding trailing edge section bar (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410127514.7A CN118030371A (en) | 2024-01-30 | 2024-01-30 | Lightweight blade for vertical axis breeze generator and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410127514.7A CN118030371A (en) | 2024-01-30 | 2024-01-30 | Lightweight blade for vertical axis breeze generator and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118030371A true CN118030371A (en) | 2024-05-14 |
Family
ID=90990534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410127514.7A Pending CN118030371A (en) | 2024-01-30 | 2024-01-30 | Lightweight blade for vertical axis breeze generator and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118030371A (en) |
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2024
- 2024-01-30 CN CN202410127514.7A patent/CN118030371A/en active Pending
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