A manufacturing method of a bonding angle mold for a wind turbine blade

Abstract

The present application relates to the wind power blade manufacturing technical field, specifically provide a kind of wind power blade with bonding angle mould manufacturing method, comprising the following steps: S1: obtaining the three-dimensional model of wind power blade shell mould;S2: using three-dimensional software simulation, glass fiber cloth and sandwich are laid to the three-dimensional model of blade shell mould;S3: after simulation is completed, respectively extracting suction surface layer simulation inner surface and pressure surface layer simulation thickness surface;S4: processing the suction surface layer simulation inner surface and pressure surface layer simulation thickness surface extracted and forming bonding angle mould three-dimensional model;S5: according to the bonding width requirement of suction surface and pressure surface, reserve design margin and trim bonding angle mould three-dimensional model;S6: according to bonding angle mould three-dimensional model making male die;S7: according to male die making bonding angle mould.The bonding angle mould in the scheme is strong in universality, does not occupy shell mould, can guarantee bonding quality, reduce material cost, shorten construction period.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind turbine blade manufacturing technology, and particularly relates to a manufacturing method of a bonding angle mold for a wind turbine blade. BACKGROUND

[0002] Wind energy has great development potential as a pollution-free, renewable green development energy, especially for coastal islands, remote mountainous areas, grassland pastures, and rural and border areas far from the power grid and difficult to reach in the short term, as a reliable way to solve production and living energy, which has great significance. Wind energy has the advantages of low energy consumption, environmental protection, and large reserves. The usual way to use wind energy is to convert wind energy into electrical energy through wind turbine generators, and to generate electricity through wind power.

[0003] The wind turbine blade is the core component of the wind power generation system, and its concept research and development, forming quality and overall performance are the guarantee for the stable operation of the generator set and the continuous power supply. In the production process of the wind turbine blade, a transition bonding angle is needed when bonding the pressure surface shell and the suction surface shell. The quality of the bonding angle determines the bonding strength of the bonding area of the leading and trailing edges of the blade, and affects the performance and service life of the blade. The quality and performance of the bonding angle are determined by the bonding angle mold, so when producing the wind turbine blade, the bonding angle mold of the wind turbine blade needs to be designed.

[0004] The conventional design and manufacturing method of the bonding angle mold is as follows: pouring the bonding angle mold base and the profile on the pressure surface shell and the suction surface shell respectively, then bonding the two parts, and finally performing hand lay-up reinforcement. This method mainly has the following problems:

[0005] 1. Low bonding strength, long production time, and long shell mold occupation time;

[0006] 2. The bonding angle molds of different shell molds of the same blade type have large differences, and the mold consistency is poor;

[0007] 3. The quality of the bonding angle mold is affected by factors such as the skill level of workers and operation precision, and surface defects are prone to occur.

[0008] Therefore, to solve the above problems, a bonding angle mold manufacturing method that can simulate the actual production process and improve the universality and bonding angle quality of the bonding angle mold is urgently needed. SUMMARY

[0009] The application provides a manufacturing method of a bonding angle mold for a wind power blade, which improves the universality of the bonding angle mold, shortens the production period, guarantees the product quality and improves the matching of the shell mold and the bonding angle mold by simulating the actual production process of the wind power blade, such as the glass cloth and the sandwich laying, designing a three-dimensional model of the bonding angle mold, manufacturing a male mold and manufacturing the bonding angle according to the male mold.

[0010] To achieve the above object, the application provides a manufacturing method of a bonding angle mold for a wind power blade, which comprises the following steps:

[0011] S1: obtaining a three-dimensional model of a shell mold of a wind power blade and design parameters of the wind power blade, and designing the bonding angle mold based on the three-dimensional model and the design parameters;

[0012] S2: simulating by using three-dimensional software, laying the glass cloth and the sandwich into the three-dimensional model of the shell mold of the wind power blade according to the design requirements, and displaying the glass cloth and the sandwich in the three-dimensional model of the shell mold of the wind power blade by the three-dimensional simulation;

[0013] S3: after the simulation is completed, extracting the suction surface layer simulation inner surface and the pressure surface layer simulation thickness surface respectively, and simulating the suction surface and the pressure surface after the glass cloth and the sandwich are laid in the actual production according to the suction surface layer simulation inner surface and the pressure surface layer simulation thickness surface;

[0014] S4: processing the suction surface layer simulation inner surface and the pressure surface layer simulation thickness surface and forming a three-dimensional model of the bonding angle mold;

[0015] S5: reserving a design allowance and trimming the three-dimensional model of the bonding angle mold according to the bonding width requirements of the suction surface and the pressure surface;

[0016] S6: manufacturing a male mold according to the three-dimensional model of the bonding angle mold;

[0017] S7: manufacturing the bonding angle mold according to the male mold.

[0018] Preferably, the step S4 comprises a sub-step S41: offsetting the extracted suction surface layer simulation inner surface in parallel according to the mold gap requirements, so as to obtain an offset surface.

[0019] Preferably, the step S4 comprises a sub-step S42: connecting the pressure surface layer simulation thickness surface and the offset surface obtained after the offsetting by a transition surface, and ensuring smooth transition.

[0020] Preferably, the three-dimensional model of the bonding angle mold in the step S4 is formed by the pressure surface flange table, the pressure surface layer simulation thickness surface, the transition surface and the offset surface.

[0021] Preferably, the method for manufacturing the male mold in step S6 is as follows: the three-dimensional model of the bonding corner mold is divided into multiple sub-models, and then multiple male mold models are generated according to the sub-models and the male mold profile is processed.

[0022] Preferably, the length of each sub-model is 2m-5m.

[0023] Preferably, the male mold profile is processed by woodwork.

[0024] Preferably, step S7 comprises the following sub-steps:

[0025] S71: sequentially lay release cloth, surface felt and four-axis cloth on the male mold;

[0026] S72: lay flow guide net and ohm tube and complete vacuum infusion;

[0027] S73: perform curing;

[0028] S74: after curing, perform polishing and edge trimming, and obtain the bonding corner mold.

[0029] Preferably, the four-axis cloth in step S71 is 8-12 layers.

[0030] Preferably, epoxy resin is used for vacuum infusion in step S72.

[0031] The present application has the following advantages:

[0032] 1. The bonding corner mold is manufactured by three-dimensional simulation, without occupying the shell mold, without delaying the normal production of the wind turbine blade, and without prolonging the production period.

[0033] 2. The bonding corner mold manufactured in the present application has excellent matching with the blade shell mold, excellent mold gap, can control the amount of structural adhesive, ensure the bonding quality, and reduce the material cost.

[0034] 3. The bonding corner mold in the present application can be applied to different shell molds of the same blade type, can be applied to different factories, and has high adaptability.

[0035] 4. The bonding corner mold in the present application is one-time formed, has high strength, and has no weak points. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is an isometric view of the blade shell mold provided by the embodiment of the present application.

[0037] Figure 2 is an overall sectional view of the bonding corner mold manufactured by the embodiment of the present application.

[0038] Figure 3 is Figure 2 is a local enlarged view of A in FIG. 8.

[0039] Figure 4 This is an isometric view of the sub-model after the adhesive corner mold is cut, as provided in the embodiment of the present invention.

[0040] Figure 5 This is an isometric view of the male mold provided in an embodiment of the present invention.

[0041] Figure reference numerals: 1. Suction surface shell; 2. Pressure surface shell; 3. Pressure surface flange; 4. Suction surface ply simulation inner surface; 5. Offset surface; 6. Transition surface; 7. Pressure surface ply simulation thickness surface; 8. Sub-model; 9. Positive mold. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the appendix. Figures 1-5 The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not constitute a limitation thereof.

[0043] A method for manufacturing a bonding corner mold for wind turbine blades, such as... Figure 1 As shown, the wind turbine blade includes a suction surface housing 1 and a pressure surface housing 2. The manufacturing method of the wind turbine blade using an adhesive corner mold includes the following steps:

[0044] S1: Obtain the 3D model of the wind turbine blade shell mold and the design parameters of the wind turbine blade, and design the bonding angle mold based on this to ensure the matching degree between the bonding angle mold and the blade shell mold; the wind turbine blade design parameters include fiberglass cloth laying requirements, core laying requirements, mold closing gap requirements, etc.

[0045] S2: Use 3D software to simulate the actual production process. According to the design parameters of the wind turbine blade, lay the fiberglass cloth and core into the 3D model of the blade shell mold according to the design positioning and size requirements. After laying, display the fiberglass cloth and core in the 3D model of the blade shell mold through 3D simulation.

[0046] S3: After the simulation is completed, extract the inner shape surface 4 of the suction surface ply simulation and the thickness surface 7 of the pressure surface ply simulation respectively; and use the inner shape surface 4 of the suction surface ply simulation and the thickness surface 7 of the pressure surface ply simulation to simulate the suction surface and pressure surface after the fiberglass cloth and core are laid in actual production.

[0047] S4: Process the extracted suction surface ply simulation inner surface 4 and pressure surface ply simulation thickness surface 7 and form a three-dimensional model of the bonding angle mold;

[0048] S41: According to the mold closing gap requirements, the extracted suction surface ply simulation inner surface 4 is parallelly offset to obtain the offset surface 5.

[0049] S42: connecting the offset curved surface 5 obtained by offsetting the pressure surface layer simulation thickness surface 7 and the transition curved surface 6, and ensuring smooth transition;

[0050] As shown in Figure 3 The bonding angle mold three-dimensional model is formed by the pressure surface flange table 3, the pressure surface layer simulation thickness surface 7, the transition curved surface 6 and the offset curved surface 5.

[0051] S5: according to the bonding width requirement of the suction surface and the pressure surface, reserving a design margin and trimming the bonding angle mold three-dimensional model;

[0052] S6: manufacturing the male die 9 according to the bonding angle mold three-dimensional model; the manufacturing method of the male die 9 is as follows: dividing the bonding angle mold three-dimensional model into multiple sub-models 8, and then generating multiple male die models according to the sub-models 8 and processing the male die shape. The length of each sub-model 8 is 2m-5m; the male die shape is processed by woodwork.

[0053] S7: manufacturing the bonding angle mold according to the male die 9; specifically including the following sub-steps:

[0054] S71: sequentially laying the release cloth, the surface felt and the four-axis cloth on the male die 9, wherein the four-axis cloth is 8-12 layers;

[0055] S72: laying the flow guide net and the ohmic tube and completing the vacuum infusion; wherein the vacuum infusion uses epoxy resin for infusion;

[0056] S73: curing;

[0057] S74: after the curing is completed, polishing and edging are performed, and the bonding angle mold is obtained.

[0058] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0059] The specific embodiments of the present application do not constitute a limitation on the protection scope of the present application. Any various other corresponding changes and modifications made according to the technical concept of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A method of manufacturing a bonding angle mould for a wind turbine blade, c h a r a c t e r i s e d in that It comprises the following steps: S1: Obtain the three-dimensional model of the wind turbine blade shell mold and the wind turbine blade design parameters, and design the bonding angle mold based on the same; S2: Use three-dimensional software to simulate, place the glass cloth and the core according to the design requirements into the three-dimensional model of the blade shell mold, and display the glass cloth and the core in the three-dimensional model of the blade shell mold through three-dimensional simulation; S3: After the simulation is completed, the suction surface layer simulation inner surface (4) and the pressure surface layer simulation thickness surface (7) are extracted respectively; and the suction surface and the pressure surface after the glass cloth and the core are laid during actual production are simulated by the suction surface layer simulation inner surface (4) and the pressure surface layer simulation thickness surface (7); S4: Process the extracted suction surface layer simulation inner surface (4) and pressure surface layer simulation thickness surface (7) and form the bonding angle mold three-dimensional model; S5: According to the bonding width requirement of the suction surface and the pressure surface, a design allowance is reserved and the bonding angle mold three-dimensional model is trimmed; S6: According to the bonding angle mold three-dimensional model, a male mold (9) is made; S7: The bonding angle mold is made according to the male mold (9).

2. The method of manufacturing a bonding angle mold for a wind turbine blade according to claim 1, characterized in that, Step S4 includes sub-step S41: According to the mold gap requirement, the extracted suction surface layer simulation inner surface (4) is offset in parallel to obtain the offset surface (5).

3. The method of manufacturing a bonding angle mould for a wind turbine blade according to claim 2, wherein Step S4 includes sub-step S42: The pressure surface layer simulation thickness surface (7) and the offset surface (5) obtained after offsetting are connected through the transition surface (6), and smooth transition is ensured.

4. The method of manufacturing a bonding angle mold for a wind turbine blade according to claim 3, wherein The bonding angle mold three-dimensional model in step S4 is formed by the pressure surface flange table (3), the pressure surface layer simulation thickness surface (7), the transition surface (6) and the offset surface (5).

5. The method of manufacturing a bonding angle mold for a wind turbine blade according to claim 4, characterized in that The manufacturing method of the male mold (9) in step S6 is as follows: the bonding angle mold three-dimensional model is divided into multiple sub-models (8), and then multiple male mold models are generated according to the sub-models (8) and the male mold shape is processed.

6. The method of manufacturing a bonding angle mold for a wind turbine blade according to claim 5, wherein The length of each sub-model (8) is 2m-5m.

7. The method of manufacturing a bonding angle mold for a wind turbine blade according to claim 6, wherein The male mold shape is processed by wood.

8. The method of manufacturing a bonding angle mold for a wind turbine blade according to any of claims 1-7, wherein Step S7 includes the following sub-steps: S71: Lay the release cloth, surface felt and four-axis cloth on the male mold (9) in turn; S72: Lay the flow guide net and ohm tube and complete the vacuum infusion; S73: Cure; S74: After curing, polish and edge, and get the bonding angle mold.

9. The method of manufacturing a bonding angle mold for a wind turbine blade according to claim 8, wherein The four-axis cloth in step S71 is 8-12 layers.

10. The method of manufacturing a bonding angle mold for a wind turbine blade according to claim 9, wherein Epoxy resin is used for vacuum infusion in step S72.

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