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Prefabricated limiting piece, spar cap, fan blade and manufacturing method, and prefabricated panel fixing method

A technology for fan blades and a manufacturing method, applied in the field of fan blades, can solve the problems of slow interlayer perfusion, poor interlayer resin infiltration, and reduced sheet bonding strength, so as to reduce mold investment costs, reduce personnel costs, and improve stability. The effect of reliability

Pending Publication Date: 2022-01-21
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 1. At present, epoxy resin is used to make fan blades, which has high cost and long molding cycle, which is not conducive to cost control;
[0011] 2. During the use of pultruded sheets, the mutual fixation is not firm, and interlayer slippage is easy to occur, resulting in the expansion of the stacking gap and excessive resin-rich;
[0012] 3. During the use of pultrusion boards, the pouring speed between layers is slower than that of the surrounding area, which is prone to poor resin infiltration between layers and reduces the bonding strength between boards;

Method used

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  • Prefabricated limiting piece, spar cap, fan blade and manufacturing method, and prefabricated panel fixing method
  • Prefabricated limiting piece, spar cap, fan blade and manufacturing method, and prefabricated panel fixing method
  • Prefabricated limiting piece, spar cap, fan blade and manufacturing method, and prefabricated panel fixing method

Examples

Experimental program
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Effect test

Embodiment 1

[0152] Such as Figure 8A , 8B As shown in , 8C, this embodiment provides a prefabricated limiting member 8, which at least includes a pair of upper and lower locking grooves arranged continuously along the groove width direction. The groove width direction Y of the prefabricated limiting member is shown in the figure. The width of the upper slot and the lower slot are both set to a multiple of the width of at least one prefabricated panel 7, and the heights of the upper slot and the lower slot are both set to the height of the prefabricated panel 7. In this embodiment, an embodiment in the form of a slot of the prefabricated limiting member 8 is provided, and the slot structure is used to prevent relative slippage and edge protrusion caused by misalignment of the prefabricated board 7 .

[0153] In this embodiment, the prefabricated limiting member 8 includes at least one first folded edge 810, at least one second folded edge 820, at least one first concave surface 840, at l...

Embodiment 2

[0158] Such as image 3 , 4 , 5A, 5B, 6, 7A, 7B, the present embodiment provides a spar cap 4, the spar cap 4 includes at least two stacks arranged along the longitudinal direction of the spar cap 4, wherein at least two The stacks are arranged adjacent to each other in the width direction of the spar caps 4 and each of the at least two stacks comprises pultruded fiber-reinforced polymers stacked on top of each other in the height direction of the spar caps 4 Plates, stacking a plurality of adjacent prefabricated plates 7 located on the same layer in the width direction is to fix the prefabricated plates 7 to each other in a certain way in the width or height direction by the prefabricated limiting parts 8 and end fixing parts 10 interspersed therebetween; , the prefabricated limiting parts 8 on two adjacent prefabricated panels 7 do not overlap in the thickness direction; at the same time, a resin flow channel 15 will be formed between the upper and lower adjacent prefabrica...

Embodiment 3

[0170] Such as figure 1 , 2 As shown, the present embodiment provides a fan blade, especially a wind turbine blade, comprising an outer skin 1, an outer skin 2, a core material, a resin, and a spar, wherein the spar has any of the above-mentioned wings The spar cap 4 is a spar cap 4 structure in which a plurality of prefabricated plates 7 are stacked for the wind turbine blade, and at least one pair of adjacent prefabricated plates 7 in the plurality of prefabricated plates 7 is bounded by a prefabricated limiting member 8 and / or a fixing member fixed;

[0171] In this embodiment, after the prefabricated plates 7 are stacked and assembled, they are put into the shell mold for integral molding, which reduces the investment in the fan blade spar cap 4 mold, reduces the mold investment cost, and further reduces the personnel cost input; the prefabricated plates are stacked and The formed spar cap 4 structure and the material content of the reinforcement are stable, which can i...

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Abstract

The invention discloses a prefabricated limiting piece, a spar cap, a fan blade and a manufacturing method, and a prefabricated panel fixing method. The prefabricated limiting piece at least comprises an upper clamping groove and a lower clamping groove which are continuously arranged in the groove width direction, and the width of the upper clamping groove and the width of the lower clamping groove are both set to be multiple of the width of at least one prefabricated panel; and the height of the upper clamping groove and the height of the lower clamping groove are set to be the height of the prefabricated plate. According to the prefabricated limiting piece, the resin-rich defect that the strength is weakened due to the fact that a large gap is generated due to relative slippage between the adjacent plates is reduced or avoided, and meanwhile the resin-rich defect caused by the fact that the plates are not attached to the core material due to edge protrusion caused by plate dislocation is reduced.

Description

technical field [0001] The invention relates to the field of fan blades, in particular to a prefabricated stopper, a spar cap, a fan blade, a manufacturing method, and a method for fixing a prefabricated plate. Background technique [0002] In order to further enhance the competitiveness of wind power generation, the power of wind power generators is getting bigger and bigger. As wind energy capture equipment, the turbine blades of wind power generators are getting bigger and bigger, but the weight is also getting bigger and bigger. Costs are also rising. [0003] The cross-section of the blade in the prior art, the fan blade is assembled in a specific way from the outer skin, the inner skin, the sandwich material, and the spar cap in the blade mold, and is made of polymer with the help of vacuum molding auxiliary technology. On the windward side and the leeward side of the shell, the two half-shells are connected by the web between the spar caps. In order to complete the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36F03D1/06B29L31/08
CPCB29C70/36F03D1/0633F03D1/0675B29L2031/085Y02E10/72Y02P70/50
Inventor 文欢齐志攀王国军白宏伟
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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