Wind power blade disconnection and reconnection structure

Abstract

The utility model belongs to the technical field of wind power blade connection, and particularly relates to a wind power blade disconnection and reconnection structure which comprises blades to be connected on the two sides, round pipes and square pipes are arranged in the blades on the two sides, the round pipes on the two corresponding sides are connected through round bars, and the square pipes on the two corresponding sides are connected through square connecting plates. The two surfaces, in the thickness direction, of the blades on the two sides are connected through an alignment connecting plate and a beam cap connecting plate and connected in a wrapping mode through an outer skin connecting plate, the alignment connecting plate is arranged at a connecting seam of the blades on the two sides and arranged in the seam direction of the blades, and the beam cap connecting plate is arranged in the length direction of the blades and connected with the outer skin connecting plate in a wrapping mode. The wind power blade disconnection and reconnection structure provided by the utility model has the advantages of relatively simple structure, higher connection strength and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind turbine blade connection, and particularly relates to a wind turbine blade disconnection and reconnection structure. Background Art

[0002] The length of wind turbine blades generally exceeds the length of ordinary transport vehicles, and the road transportation conditions are quite demanding. The cost of professional transport vehicles is relatively high.

[0003] At present, the existing technology generally adopts a segmented blade structure to solve the above problems, but the connection structure has certain defects. Some connection structures are relatively simple, generally connected by plug-in (plug-in tube and plug-in sleeve), and a connecting skin (external connecting plate) is set on the outside. This connection method is relatively simple, but the connection strength is relatively poor; some connections are relatively complicated. Patent CN116104688A discloses a two-stage wind turbine blade connection structure, which has a very complicated structure, is troublesome to connect, and is not easy to produce. Utility Model Content

[0004] The utility model provides a wind turbine blade disconnection and reconnection structure, which can solve the problems pointed out in the background technology.

[0005] A wind turbine blade disconnection and reconnection structure comprises blades to be connected on both sides, wherein round tubes and square tubes are arranged in the blades on both sides, the corresponding round tubes on both sides and the corresponding square tubes on both sides are connected by round rods and square connecting plates respectively, the two surfaces of the blades in the thickness direction on both sides are connected by alignment connecting plates and beam cap connecting plates, and are connected by covering with outer skin connecting plates, the alignment connecting plates are arranged at the connecting seams of the blades on both sides and are arranged along the direction of the gap, and the beam cap connecting plates are arranged along the length direction of the blades.

[0006] Preferably, the round tube and the square tube are FRP round tubes and FRP square tubes pre-buried in the blades, the round rods are FRP round rods, the square connecting plates are square FRP connecting plates, and the FRP round rods and the round tubes, and the square tubes and the square connecting plates are connected by bonding.

[0007] Preferably, both surfaces of the blade in the thickness direction are provided with an alignment connection groove and a spar cap connection groove, the alignment connection plate is bonded in the alignment connection groove, and the spar cap connection plate is bonded in the spar cap connection groove.

[0008] Beneficial effects: The utility model provides a wind turbine blade disconnection and reconnection structure, which has a relatively simple structure and high connection strength;

[0009] The design uses a combination of round tubes and square tubes. The round tubes are mainly used to ensure that the outer surface is flush when the blades are connected; the square tubes are mainly used to increase the bending strength of the blades.

[0010] The coordinated design of the alignment connecting plates, beam cap connecting plates and outer skin connecting plates can increase the tensile strength of the blade surface and can improve the tensile strength in different directions, i.e., the alignment connecting plates in the width direction, the beam cap connecting plates in the length direction, and the outer skin connecting plates in the circumferential direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the internal structure of the utility model.

[0012] Figure 2 This is a schematic diagram of the external structure of the utility model.

[0013] Description of reference numerals:

[0014] The reference numerals in the figure are: blade 1; round tube 21; square tube 22; round rod 23; square connecting plate 24; alignment connecting plate 25; beam cap connecting plate 26; outer skin connecting plate 27; alignment connecting groove 28; beam cap connecting groove 29. DETAILED DESCRIPTION

[0015] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0016] Embodiment 1:

[0017] like Figure 1-2 As shown, a wind turbine blade disconnection and reconnection structure includes blades 1 to be connected on both sides, circular tubes 21 and square tubes 22 are provided in the blades 1 on both sides, the corresponding circular tubes 21 on both sides and the corresponding square tubes 22 on both sides are connected by round rods 23 and square connecting plates 24 respectively, the two surfaces of the blades 1 on both sides in the thickness direction are connected by alignment connecting plates 25 and beam cap connecting plates 26, and are covered and connected by outer skin connecting plates 27, the alignment connecting plates 25 are arranged at the connecting seams of the blades 1 on both sides, and are arranged along the direction of the gap, and the beam cap connecting plates 26 are arranged along the length direction of the blades 1.

[0018] Specifically, the round tube 21 and the square tube 22 are glass fiber reinforced plastic round tubes and glass fiber reinforced plastic square tubes pre-buried in the blade 1, the round rod 23 is a glass fiber reinforced plastic round rod, and the square connecting plate 24 is a square glass fiber reinforced plastic connecting plate. The glass fiber reinforced plastic round rod and the round tube 21, as well as the square tube 22 and the square connecting plate 24 are bonded together. Alignment connecting grooves 28 and beam cap connecting grooves 29 are provided on both surfaces in the thickness direction of the blade 1. The alignment connecting plate 25 is bonded in the alignment connecting groove 28, the beam cap connecting plate 26 is bonded in the beam cap connecting groove 29, and the outer skin connecting plate 27 is covered on the outermost layer and is bonded by structural adhesive and connected by rivets.

[0019] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A wind turbine blade disconnection and reconnection structure, comprising blades to be connected on both sides (1), characterized in that: The blades (1) on both sides are provided with round tubes (21) and square tubes (22); the corresponding round tubes (21) on both sides and the corresponding square tubes (22) on both sides are connected by round bars (23) and square connecting plates (24) respectively; the two surfaces of the blades (1) on both sides in the thickness direction are connected by alignment connecting plates (25) and beam cap connecting plates (26), and are connected by covering with outer skin connecting plates (27); the alignment connecting plates (25) are arranged at the connecting seams of the blades (1) on both sides and are arranged along the direction of the seams; the beam cap connecting plates (26) are arranged along the length direction of the blades (1).

2. A wind turbine blade disconnection and reconnection structure according to claim 1, characterized in that: The round tube (21) and the square tube (22) are glass fiber reinforced plastic round tubes and glass fiber reinforced plastic square tubes pre-buried in the blade (1); the round rod (23) is a glass fiber reinforced plastic round rod; the square connecting plate (24) is a square glass fiber reinforced plastic connecting plate; the glass fiber reinforced plastic round rod and the round tube (21) as well as the square tube (22) and the square connecting plate (24) are connected by bonding.

3. A wind turbine blade disconnection and reconnection structure according to claim 2, characterized in that: An alignment connection groove (28) and a beam cap connection groove (29) are provided on both surfaces of the blade (1) in the thickness direction; the alignment connection plate (25) is bonded in the alignment connection groove (28), and the beam cap connection plate (26) is bonded in the beam cap connection groove (29).

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