CN201730736U - Blade connecting piece structure of vertical-shaft wind-driven generator - Google Patents

Abstract

The utility model relates to a vertical axis wind power generator, in particular to a blade connector structure for improving the service life of the vertical axis wind power generator. A metal plate and a blade hoop are connected together as a matrix, and a plurality of through holes for fiber threading and winding are arranged on the metal plate; the exterior of the matrix is covered with a composite material of resin and fiber. By adopting the connector structure of the utility model, the overall service life of the vertical axis wind power generator is greatly improved. The structure of the utility model will greatly improve the anti-corrosion effect of the moving parts and prolong the service life to more than 20 years.

Description

A vertical axis wind turbine blade connector structure

technical field

The utility model relates to a vertical axis wind power generator, in particular to a blade connector structure for improving the service life of the vertical axis wind power generator.

Background technique

The blades of the vertical axis wind turbine and the generator are connected through the support wing, usually in two ways, one is that the support wing 1 passes through the blade and directly connects to the blade 2, as shown in Figure 1; the other is to use The hoop 3, the hoop 3 is sleeved on the outside of the blade 2 and fixed, and the supporting wing 1 and the hoop 3 are connected, as shown in FIG. 2 . The structure of the first method is simple but requires the blade material to have high shear resistance characteristics. The structure of the second method is complex, but the requirements for the blade material are not high, but the material and requirements for the hoop are higher, that is, It is said that the material required to make the hoop has high shear resistance and high bending moment resistance, corrosion resistance and aging resistance.

Because FRP has excellent bending resistance, corrosion resistance and weather resistance, generally larger fan blades are made of FRP, but due to the poor shear resistance of FRP, the blades of larger vertical axis wind turbines The connector structures all adopt the above-mentioned second mode, that is, the mode in which the support wing is connected to the hoop.

Because the fan needs to withstand the requirements of working in a harsh outdoor environment, the supporting wings made of existing metal materials are often cracked or rusted at the part of the welding connection between the supporting wing and the hoop, which affects the overall service life and quality of the fan. appearance, and even cause accidents. The service life of the moving parts of the existing structure generally can only reach 5-10 years.

Utility model content

In order to solve the above technical problems, a vertical axis wind turbine blade connector structure is now proposed, which is based on the connection of a metal plate and a blade hoop as a body, and a number of through holes for fibers to be threaded and wound are provided on the metal plate ; Composite material with resin and fiber coated on the outside of the matrix.

A plurality of through holes are provided on the above-mentioned blade hoop for the fibers to be threaded and wound. The fiber covering the blade hoop is intertwined with the through hole of the metal plate through the through hole of the blade hoop, thereby strengthening the strength of the metal plate and the blade hoop as an integral structure.

Nuts are fixed at the through holes provided by the above-mentioned blade hoops, which are convenient for fixing parts such as bolts to fix the blades and the blade hoops.

The shape of the metal plate is in the shape of a wing, and reinforcing ribs are arranged along the horizontal direction of the metal plate to improve the bending resistance of the metal plate.

Nuts are fixed at the through-holes on the above-mentioned metal plate to facilitate fiber threading and winding, so as to improve strength and rigidity.

The above-mentioned metal plate and the blade hoop are connected into one body and used as the base body by welding.

The metal plate and the blade hoop are connected into one body, and the connection angle thereof is 45 degrees to 135 degrees.

The metal plate and the blade hoop are integrally connected, preferably at an included angle of 90 degrees.

The composite material of resin and fiber coated on the outside of the matrix is glass fiber reinforced plastic.

Further, in order to reduce the weight of the support wing and improve the bending performance of the support wing, the FRP used is a hollow FRP with a certain aerodynamic shape. The section curve of the support wing is composed of three sets of elliptic curves and meets the spline curve. Part of the thickness is large, and the thickness of the two sides decreases. In order to reduce the weight of the support wing while maintaining the ability of the support wing to resist bending moments and have a small air resistance.

The metal plate is connected with the central shaft of the vertical axis wind power generator through a metal member, and the metal plate and the metal member are fixed by bolts.

By adopting the connector structure of the utility model, the overall service life of the vertical axis wind power generator is greatly improved. The structure of the utility model will greatly improve the anti-corrosion effect of the moving parts and prolong the service life to more than 20 years.

Description of drawings

Fig. 1, the structural schematic diagram of the direct connection between the support wing of the existing vertical axis wind turbine and the blade;

Fig. 2 is a structural schematic diagram of the connection between the support wing of the existing vertical axis wind turbine and the blade hoop;

Fig. 3 is a schematic diagram of the metal member structure of the utility model connector structure;

Fig. 4 Schematic diagram of blade hoop structure;

Fig. 5 schematic diagram of metal plate structure;

Fig. 6 Structural schematic diagram of metal components (connectors);

Fig. 7 is a schematic diagram of the utility model connector structure;

Fig. 8 is a three-dimensional schematic diagram of the connector structure of the utility model.

1-support wing, 2-blade, 3-blade hoop, 4-metal plate, 5-metal member (connector), 6-through hole, 7-reinforcing rib.

Detailed ways

Example 1

As shown in Figure 3-8, a vertical axis wind turbine blade connector structure is based on the connection of metal plate 4 and blade hoop 3 as a base, and a number of fibers are arranged on the metal plate 4 for threading and winding. The through hole 6; the matrix is covered with a composite material of resin and fiber.

A plurality of through holes 6 are provided on the above-mentioned blade hoop for fibers to be threaded and wound. The fiber covering the blade hoop 3 is intertwined with the through hole 6 of the metal plate through the through hole 6 of the blade hoop, so as to strengthen the strength of the metal plate and the blade hoop as an integral structure.

Nuts are fixed at the through holes 6 provided in the above-mentioned blade hoops 3, so that the blades and the blade hoops can be fixed by fasteners such as bolts.

The shape of the metal plate 4 is in the shape of an airfoil, and reinforcing ribs 7 are provided along the horizontal direction of the metal plate 4 to improve the bending resistance of the metal plate.

A nut is fixed at the through hole 6 provided on the above metal plate 4, which is convenient for fiber threading and winding, so as to improve strength and rigidity.

The above-mentioned metal plate 4 and the blade hoop 3 are integrally connected as a substrate by welding.

The metal plate and the blade hoop are connected into one body, and the connection angle thereof is 45 degrees.

The composite material of resin and fiber coated on the outside of the matrix is glass fiber reinforced plastic.

Further, in order to reduce the weight of the support wing and improve the bending performance of the support wing, the FRP used is a hollow FRP with a certain aerodynamic shape. The section curve of the support wing is composed of three sets of elliptic curves and meets the spline curve. Part of the thickness is large, and the thickness of the two sides decreases. In order to reduce the weight of the support wing while maintaining the ability of the support wing to resist bending moments and have a small air resistance.

The metal plate and the central shaft of the vertical axis wind power generator are connected through a metal member (connector), and the metal plate and the metal member (connector) are fixed by bolts.

The structure of the utility model will greatly improve the anti-corrosion effect of the moving parts and prolong the service life to more than 20 years.

Example 2

The metal plate and the blade hoop are connected into one body, and the connection angle is 90 degrees. All the other are identical with embodiment 1.

Example 3

The metal plate and the blade hoop are connected into one body, and the connection angle is 135 degrees. All the other are identical with embodiment 1.

Claims (10)

1. a vane of vertical shaft wind-driven generator link structure is characterized in that, links into an integrated entity as matrix with sheet metal and fan-catcher, is provided with some through holes that wear winding for fiber on described sheet metal; The composite material of the outside resin-coated and fiber of matrix.

2. blade link structure according to claim 1 is characterized in that, is provided with some through holes that wear winding for fiber on described fan-catcher.

3. blade link structure according to claim 2 is characterized in that the through hole of offering in described fan-catcher is installed with nut.

4. blade link structure according to claim 1 is characterized in that the shape of described sheet metal is the wing shape, prolongs substantially horizontal at sheet metal stiffening rib is set.

5. blade link structure according to claim 1 is characterized in that the through hole of offering is installed with nut on described sheet metal.

6. blade link structure according to claim 1 is characterized in that, what adopt being connected of described sheet metal and fan-catcher is welding.

7. according to claim 1 or 6 described blade link structures, it is characterized in that described sheet metal and fan-catcher link into an integrated entity, it connects angle is 45 degree～135 degree.

8. according to claim 1 or 6 described blade link structures, it is characterized in that described sheet metal and fan-catcher link into an integrated entity, it connects angle is 90 degree.

9. blade link structure according to claim 1 is characterized in that, the supporting wing cross section curve is combined by three groups of ellipse curves and satisfies spline curve, and intermediate portion thickness is big, two limit thickness-tapereds.

10. blade link structure according to claim 1 is characterized in that, is connected by metal construction between described sheet metal and vertical axis aerogenerator central shaft, and sheet metal and metal construction are with bolt.

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