Rain shielding ring for blades of wind power generation equipment

Abstract

The utility model discloses a blade rain shielding ring of wind power generation equipment, which belongs to the technical field of wind power generation equipment and comprises an annular blade root, an annular groove is arranged on the outer ring surface of the annular blade root, the annular groove extends along the outer ring surface of the annular blade root to form a ring, and the outer side of the annular blade root is fixedly connected with a rain shielding blade. An acute angle is formed between the rain shielding blade and the first direction of the axis of the annular blade root, and a reinforcing rib is fixedly connected between the rain shielding blade and the annular blade root in the first direction. The utility model has the advantage that the production, transportation and installation costs are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation equipment technical field, specifically be pointed to a kind of wind power generation equipment blade rainproof ring. BACKGROUND

[0002] At present, the rainproof ring of most wind power generation equipment blades is installed integrally with the blade before leaving factory, and the material is glass fiber reinforced plastic.

[0003] Chinese patent CN201739095U provides a wind power blade rainproof ring, which is the current most commonly used rainproof ring technology. The original product is installed before leaving factory.

[0004] However, the rainproof ring of this technology has high hardness and cannot deform, and is not resistant to impact during installation. It increases the diameter of the wind power generation equipment column, affecting transportation and installation. Moreover, the installation method is multi-segmented, with inner and outer layers spliced.

[0005] Chinese patent application No. 2023109124687 provides a wind power blade rainproof ring structure and installation method. A fixed ring is pre-installed before leaving factory, and the blade rainproof ring is connected to the outer ring of the blade root on the side of the fixed ring after arriving at the construction site. A connecting strip is inserted into the hollow cavity of the fixed ring and cooperates with the blade rainproof ring. Sealant is applied between the blade root and the blade rainproof ring. The blade rainproof ring is provided with a blade rainproof ring connecting end.

[0006] However, the production process of this product requires high technology, and the installation is complex, resulting in high production and installation costs. SUMMARY

[0007] The utility model solves the technical problems mentioned in the above background technology, provides a wind power generation equipment blade rainproof ring, changes the assembly method, saves the cost of production, transportation and installation, and changes the structure and appearance of the product, so that it has good rainproof effect.

[0008] To achieve the above purpose, the utility model provides a technical scheme: a wind power generation equipment blade rainproof ring, including annular blade root, the outer ring surface of annular blade root is provided with annular groove, annular groove extends into a ring along the outer ring surface of annular blade root, the outer side of annular blade root is fixedly connected with rainproof blade, rainproof blade and the first direction of the axis of annular blade root are acute angle, and rainproof blade is fixedly connected with annular blade root in the first direction and is provided with reinforcing rib.

[0009] In some embodiments, the annular groove is arranged on one side of the first direction of the axis of the annular blade root.

[0010] In some embodiments, the annular groove is provided with a plurality of annular grooves, and the plurality of annular grooves are arranged on both sides of the rainproof blade of the annular blade root.

[0011] In some embodiments, the rain-shielding blade comprises a first wing, a second wing and a third wing, the first wing is fixedly connected with the annular blade root, two ends of the second wing are fixedly connected with the first wing and the third wing respectively, an included angle between the first wing and an axis of the annular blade root in a first direction is between 55° and 85°, an included angle between the first wing and the second wing is between 148° and 168°, and a thickness of the first wing and the second wing is between 3 mm and 6 mm.

[0012] In some embodiments, an included angle between the third wing and the second wing is 152°, and a thickness of the third wing is between 3 mm and 6 mm.

[0013] In some embodiments, the third wing is parallel to the axis direction of the annular blade root, and a thickness of the third wing is between 3 mm and 6 mm.

[0014] In some embodiments, a vertical height between a top of the rain-shielding blade and the annular blade root is between 155 mm and 250 mm.

[0015] In some embodiments, a vertical height between a top of the first wing and the annular blade root is between 120 mm and 160 mm, and a vertical height between a top of the second wing and the annular blade root is between 160 mm and 250 mm.

[0016] In some embodiments, the annular blade root, the annular groove and the rain-shielding blade are integrated, a material is polyurethane, a root between the annular blade root, the annular groove and the rain-shielding blade is provided with a round corner of a turning transition, a thickness of a main part of the annular blade root is between 4 mm and 7 mm, a thickness of the annular blade root at the annular groove part is between 2 mm and 5 mm, and a width of the annular groove is between 20 mm and 40 mm.

[0017] In some embodiments, a plurality of reinforcing ribs are arranged on an outer periphery of the annular blade root.

[0018] Compared with the prior art, the utility model has the advantages that: 1, the whole is polyurethane material, is installed to the blade outer wind cylinder with steel band cooperation fastening screw, does not need to install before factory, saves production, transportation and installation cost;2, the outer edge of rain-shielding blade is expanded, the rain-shielding blade can bring better rain-shielding effect by the inclination and multiple bending.

[0019] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a sectional view schematic diagram of the blade rain-shielding ring of the first embodiment of the utility model;

[0021] Figure 2 As Figure 1 A part of the enlarged schematic view shown in part A of the figure;

[0022] Figure 3 The rain deflector blade part of the second embodiment of the utility model is shown in the figure.

[0023] In the figure: 1, annular blade root; 2, annular groove; 3, rain deflector blade; 4, reinforcing rib; 31, first wing; 32, second wing; 33, third wing. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail below.

[0025] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and the following embodiments are used to illustrate the utility model but not to limit the scope of the utility model.

[0026] First embodiment:

[0027] In combination with Figure 1 , Figure 2 A rain deflector ring for a wind power generation equipment blade is shown, which is made of polyurethane, and the polyurethane material has certain plasticity and elasticity, so that the annular blade root 1 part of the rain deflector ring can be conveniently sleeved on the wind drum of the wind power generation equipment at the equipment construction site, the production and installation cost of the rain deflector ring is saved, and compared with the glass fiber reinforced plastic rain deflector ring installed before leaving the factory, the transportation cost of the wind power generation equipment is more saved.

[0028] The outer ring surface of the annular blade root 1 is provided with two annular grooves 2, the annular grooves 2 extend along the outer ring surface of the annular blade root 1, and form annular grooves on the outer surface of the annular blade root 1. Steel bands are sleeved on the annular grooves 2, and the two ends of the steel bands are fixed by using fastening screws, so that the rain deflector ring of the embodiment is fixed on the wind power generation equipment. The steel bands can be conveniently installed, compared with the splicing connection mode of the multi-section type and the inner and outer two layers, the structure is simpler and more practical, the production cost is also lower.

[0029] The annular blade root 1, the annular groove 2 and the rain deflector blade 3 are integrated, the root between the annular blade root 1, the annular groove 2 and the rain deflector blade 3 is provided with a fillet for transition, the thickness of the main part of the annular blade root 1 is 7mm, the thickness of the annular blade root 1 at the annular groove 2 part is 5mm, and the width of the annular groove 2 is 20mm.

[0030] The rain-shielding blade 3 is provided with two bends to divide it into a first wing 31, a second wing 32 and a third wing 33. The angle between the first wing 31 and the annular blade root 1 is 55°, the angle between the second wing 32 and the first wing 31 is 148°, the thickness of the first wing 31 is 6mm, the thickness of the second wing 32 is 6mm, the third wing 33 is parallel to the axis direction of the annular blade root 1, and the thickness of the third wing 33 is 6mm.

[0031] The vertical height between the top of the first wing 31 and the annular blade root 1 is 160mm, the vertical height between the top of the second wing 32 and the annular blade root 1 is 220mm, and the vertical height between the top of the rain-shielding blade 3 and the annular blade root 1 is 250mm.

[0032] The reasonable blade angle and the increased blade edge can achieve better rain-shielding effect.

[0033] A plurality of reinforcing ribs 4 are arranged between the rain-shielding blade 3 and the annular blade root 1, and the plurality of reinforcing ribs 4 are uniformly arranged on the outer periphery of the annular blade root 1. The plurality of reinforcing ribs 4 are used to enhance the wind and rain resistance of the rain-shielding blade 3.

[0034] Second embodiment:

[0035] In combination Figure 3 As shown in the figure, the rain-shielding ring provided by the second embodiment is substantially the same as the first embodiment, and the difference lies in that:

[0036] There is only one annular groove 2, which is arranged on the left side of the axis of the annular blade root 1.

[0037] The thickness of the main part of the annular blade root 1 is 4mm, the thickness of the annular blade root 1 at the annular groove 2 part is 2mm, and the width of the annular groove 2 is 50mm.

[0038] The rain-shielding blade 3 is provided with two bends to divide it into a first wing 31, a second wing 32 and a third wing 33. The angle between the first wing 31 and the annular blade root 1 is 85°, the angle between the second wing 32 and the first wing 31 is 168°, the thickness of the first wing 31 is 3mm, the thickness of the second wing 32 is 3mm, the angle between the left side of the second wing 32 and the third wing 33 is 152°, and the thickness of the third wing 33 is 3mm.

[0039] The vertical height between the top of the first wing 31 and the annular blade root 1 is 120mm, the vertical height between the top of the second wing 32 and the annular blade root 1 is 160mm, and the vertical height between the top of the rain-shielding blade 3 and the annular blade root 1 is 205mm.

[0040] A plurality of reinforcing ribs 4 are arranged between the rain deflector blade 3 and the annular blade root 1, and the plurality of reinforcing ribs 4 are arranged uniformly along the outer periphery of the annular blade root 1, and the plurality of reinforcing ribs 4 are used to enhance the wind and rain resistance of the rain deflector blade 3.

[0041] According to the size of the fan used, combined with the needs of the environment, a rain deflector ring of a suitable size is designed, and certain material costs can be saved.

[0042] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A wind turbine blade rain- shield ring comprising an annular root (1), characterised in that: The outer ring surface of the annular blade root (1) is provided with an annular groove (2) extending along the outer ring surface of the annular blade root (1) in a ring, the outer side of the annular blade root (1) is fixedly connected with a rain-shielding blade (3), the rain-shielding blade (3) is at an acute angle with the first direction of the axis of the annular blade root (1), and the rain-shielding blade (3) is fixedly connected with the annular blade root (1) in the first direction and is fixedly connected with a reinforcing rib (4).

2. The wind turbine blade rain shield ring according to claim 1, characterized in that: The annular groove (2) is arranged on the first direction side of the axis of the annular blade root (1).

3. A wind power plant blade rain band according to claim 1, characterised in that: The annular groove (2) is provided with a plurality of annular grooves (2) arranged on both sides of the rain-shielding blade (3) of the annular blade root (1).

4. A wind power plant blade rain band according to claim 1, characterised in that: The rain-shielding blade (3) includes a first wing (31), a second wing (32) and a third wing (33), the first wing (31) is fixedly connected with the annular blade root (1), the two ends of the second wing (32) are fixedly connected with the first wing (31) and the third wing (33) respectively, the included angle between the first wing (31) and the axis of the annular blade root (1) in the first direction is between 55°-85°, the included angle between the second wing (32) and the first wing (31) is between 148°-168°, and the thickness of the first wing (31) and the second wing (32) is between 3mm-6mm.

5. A wind power plant blade rain band according to claim 4, characterised in that: The included angle between the third wing (33) and the second wing (32) is 152°, and the thickness of the third wing (33) is between 3mm-6mm.

6. A wind power plant blade rain band according to claim 4, characterised in that: The third wing (33) is parallel to the axial direction of the annular blade root (1), and the thickness of the third wing (33) is between 3mm-6mm.

7. A wind turbine blade rain band according to claim 1, characterised in that: The vertical height between the top of the rain-shielding blade (3) and the annular blade root (1) is between 150mm-250mm.

8. A wind turbine blade rain band according to claim 4, characterised in that: The vertical height between the top of the first wing (31) and the annular blade root (1) is between 120mm-160mm, and the vertical height between the top of the second wing (32) and the annular blade root (1) is between 160mm-250mm.

9. A wind turbine blade rain band according to claim 1, characterised in that: The annular blade root (1), the annular groove (2) and the rain-shielding blade (3) are integrated, the material is polyurethane, the root between the annular blade root (1), the annular groove (2) and the rain-shielding blade (3) is provided with a round corner of a turning transition, the thickness of the main part of the annular blade root (1) is between 4mm-7mm, the thickness of the annular blade root (1) at the annular groove (2) part is between 2mm-5mm, and the width of the annular groove (2) is between 20mm-40mm.

10. A wind turbine blade rain band according to claim 1, characterised in that: The reinforcing rib (4) is provided with a plurality of reinforcing ribs (4) arranged in a ring along the outer periphery of the annular blade root (1) at equal intervals.

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