Light-gram-weight biaxial flow guide fabric

Abstract

The utility model relates to the technical field of glass fiber products, in particular to a light-gram-weight biaxial flow guide fabric which comprises a first main yarn layer, a second main yarn layer and a framework layer laid between the first main yarn layer and the second main yarn layer, and the laying angles among the first main yarn layer, the second main yarn layer and the framework layer are different. Due to the existence of the framework layer, a gap exists between the first main yarn layer and the second main yarn layer, resin can permeate conveniently, the flow guide effect is achieved, and the flow guide and combination effects of a final product between pultrusion plates are effectively guaranteed; the framework layer serves as an auxiliary layer and plays a role in supporting the fabric and preventing the fabric from deforming, the adjacent first main yarn layer and the second main yarn layer have certain supporting force, the problem that the biaxial fabric is prone to deformation is solved, optimization of the blade structure is achieved, the blade can keep a stable shape when bearing wind power and other external acting force, and the service life of the blade is prolonged. And the structural strength and stability of the blade are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass fiber products, in particular to a light-weight biaxial flow-guiding fabric. Background Art

[0002] With the advancement of technology and economic development, the size of wind power generation devices has gradually increased. The blades are one of the most important components of the entire device. The design and material selection of the blades are crucial to the power generation efficiency and the performance of the entire system. With the development of wind power generation technology, wind power blades tend to be larger, but the larger the blades, the heavier the material quality and the burden on the unit, so the blades must be developed towards the requirements of lightweight and high performance.

[0003] In the development of wind power generation, higher requirements and demands are placed on the main mechanical performance indicators of strength and modulus of glass fiber reinforced fabric materials, which are the main body of blade reinforcement structure. At present, biaxial fabrics are prone to deformation, especially when subjected to external forces, which may cause uneven fabric surface.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The utility model provides a light-weight biaxial flow-guiding fabric, thereby effectively solving the problems in the background technology.

[0006] In order to achieve the above-mentioned object, the technical solution adopted by the utility model is: a light weight biaxial flow-guiding fabric, comprising a first main yarn layer and a second main yarn layer arranged up and down, and at least one skeleton layer arranged between the first main yarn layer and the second main yarn layer, and a binding yarn for binding the first main yarn layer, the second main yarn layer and the skeleton layer;

[0007] The first main yarn layer includes first yarn bundles arranged in parallel in the A° direction;

[0008] The second main yarn layer includes second yarn bundles arranged in parallel in the -A° direction;

[0009] The skeleton layer includes spun yarn bundles arranged in parallel in the B° direction;

[0010] The angles A° and B° are different, so that the first yarn bundles, the spun yarn bundles and the second yarn bundles between adjacent levels are arranged in a staggered manner.

[0011] Furthermore, it comprises a first skeleton layer, wherein the first skeleton layer comprises cross-shaped spun yarn bundles arranged in directions of 0° and 90°.

[0012] Furthermore, it comprises a first skeleton layer and a second skeleton layer, wherein the first skeleton layer comprises spun yarn bundles arranged in a 0° direction, and the second skeleton layer comprises spun yarn bundles arranged in a 90° direction.

[0013] Furthermore, the B° is -10° to 10° or 80° to 110°.

[0014] Furthermore, the A° is 10° to 80°.

[0015] Furthermore, the specifications of the first main yarn layer and the second main yarn layer are 100 TEX~300 TEX, and the single-layer unit weight of the first main yarn layer and the second main yarn layer is 95 grams~100 grams.

[0016] Furthermore, the specification of the skeleton layer is 50TEX~80TEX, and the unit weight of a single layer of the skeleton layer is 1.9g~2.1g.

[0017] Furthermore, the first main yarn layer and the second main yarn layer are both ordinary modulus glass fiber untwisted roving bundles.

[0018] Furthermore, the skeleton layer is glass fiber yarn.

[0019] Furthermore, the binding yarn is low-elastic polyester yarn, and the low-elastic polyester yarn is used to weave the first main yarn layer, the second main yarn layer and the skeleton layer into a whole.

[0020] The beneficial effects of the utility model are as follows: the utility model lays a skeleton layer between the first main yarn layer and the second main yarn layer, and the laying angles between the first main yarn layer, the second main yarn layer and the skeleton layer are different. The existence of the skeleton layer creates a gap between the first main yarn layer and the second main yarn layer, which is convenient for resin infiltration and plays a role of guide, effectively ensuring the guide and bonding of the final product between the pultruded plates; the skeleton layer serves as an auxiliary layer to support the fabric and prevent deformation of the fabric. The adjacent first main yarn layer and the second main yarn layer have a certain supporting force, which improves the problem of easy deformation of the biaxial fabric and optimizes the blade structure, so that the blade can maintain a stable shape when subjected to wind and other external forces, thereby improving the structural strength and stability of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 An implementation method of a light-weight biaxial flow-guiding fabric;

[0023] Figure 2 Another embodiment of a light-weight biaxial flow-guiding fabric;

[0024] Figure 3 is a schematic structural diagram of a gap between a first main yarn layer and a second main yarn layer;

[0025] Figure 4 Schematic diagram of the laying angle of the spun yarn bundles of the skeleton layer (B=0°);

[0026] Figure 5 Schematic diagram of the laying angle of the spun yarn bundles of the skeleton layer (B=90°);

[0027] Figure 6 Schematic diagram of the laying angle of the spun yarn bundles of the skeleton layer (B=0°, B=90°);

[0028] Figure 7 Schematic diagram of the laying angle of the spun yarn bundles of the skeleton layer (B=10°, B=80°).

[0029] Reference numerals: 1, first main yarn layer; 11, first yarn bundle; 2, second main yarn layer; 21, second yarn bundle; 3, first skeleton layer; 31, spun yarn bundle; 4, second skeleton layer; 5, gap. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figures 1 to 7 As shown: a light weight biaxial flow-guiding fabric, comprising a first main yarn layer 1, a second main yarn layer 2 arranged up and down, at least one skeleton layer arranged between the first main yarn layer 1 and the second main yarn layer 2, and binding yarn used for binding the first main yarn layer 1, the second main yarn layer 2 and the skeleton layer;

[0034] The first main yarn layer 1 comprises first yarn bundles 11 arranged in parallel in the A° direction;

[0035] The second main yarn layer 2 includes a second yarn bundle 21 arranged in parallel in the -A° direction;

[0036] The skeleton layer includes spun yarn bundles 31 arranged in parallel in the B° direction;

[0037] The angles A° and B° are different, so that the first yarn bundles 11, the spun yarn bundles 31 and the second yarn bundles 21 between adjacent levels are arranged in a staggered manner.

[0038] By laying a skeleton layer between the first main yarn layer 1 and the second main yarn layer 2, and laying the first main yarn layer 1, the second main yarn layer 2 and the skeleton layer at different angles, the presence of the skeleton layer causes a gap 5 to exist between the first main yarn layer 1 and the second main yarn layer 2, such as Figure 3 As shown, it is convenient for resin to penetrate, plays a guiding role, and effectively ensures the guiding and bonding effect of the final product between the pultruded plates; the skeleton layer serves as an auxiliary layer to support the fabric and prevent the deformation of the fabric. The adjacent first main yarn layer 1 and the second main yarn layer 2 have a certain supporting force, which improves the problem of easy deformation of the biaxial fabric and realizes the optimization of the blade structure, so that the blade can maintain a stable shape when subjected to wind and other external forces, thereby improving the structural strength and stability of the blade.

[0039] like Figure 1As shown, as an implementation method of a light-weight biaxial flow-guide fabric, the skeleton layer includes a first skeleton layer 3, and the first skeleton layer 3 includes a cross-shaped fine yarn bundle 31 arranged in the directions of 0° and 90°. Specifically, in this embodiment, it includes a three-layer structure, a first main yarn layer 1, a first skeleton layer 3, and a second main yarn layer 2 arranged in sequence from top to bottom, and there is only one first skeleton layer 3, and the first skeleton is a cross-shaped fine yarn bundle 31 structure. The cross-shaped fine yarn bundle 31 structure can more effectively disperse the force, and the solid support frame enhances the overall stability of the blade. At the same time, the gram-to-weight ratio of the first skeleton layer 3 is reduced, thereby reducing the overall weight.

[0040] like Figure 2 As shown, as another embodiment of the light-weight biaxial flow-guide fabric, in this embodiment, the skeleton layer includes a first skeleton layer 3 and a second skeleton layer 4, the first skeleton layer 3 includes a spun yarn bundle 31 arranged in a 0° direction, and the second skeleton layer 4 includes a spun yarn bundle 31 arranged in a 90° direction. Specifically, in this embodiment, it includes a four-layer structure, a first main yarn layer 1, a first skeleton layer 3, a second skeleton layer 4, and a second main yarn layer 2 are sequentially arranged on it, and the two layers of skeletons are stacked into a cross-shaped structure, and the first skeleton layer 3 at 0° and the second skeleton layer 4 at 90° are processed respectively, which simplifies the processing technology, reduces production costs, helps to improve production efficiency, and reduces the overall project cost.

[0041] As a preferred embodiment of the above, B° is -10° to 10° or 80° to 110°; preferably B° is 0° or 90°. Four optional implementations of the skeleton layer laying angle are as follows: Figures 4 to 7 As shown, the angles B of the skeleton layer yarn bundles 31 are respectively 0°; 90°; 0° and 90° staggered; -10° and 80° staggered. Other angles can also be used as long as the angles of the yarn bundles between the two adjacent first main yarn layers 1, the second main yarn layer 2 and the skeleton layer are staggered. The skeleton layer yarn bundles 31 are arranged along the length or width direction to form a gap 5 between the first main yarn layer 1 and the second main yarn layer 2, and the gap 5 is arranged along the length and width of the fabric. The resin is guided, and the fabric makes the bonding between the pultruded plates more uniform.

[0042] Specifically, by adjusting the spacing between the spun yarn bundles 31 at 0° and 90°, different sparseness levels are displayed, thereby achieving diversion effects in different directions.

[0043] In this embodiment, A° is 10° to 80°; preferably A° is 45°, Figure 1 , 2The angle of the first yarn bundle 11 of the first main yarn layer 1 is 45°, and the angle of the second yarn bundle 21 of the second main yarn layer 2 is -45°. The 45° setting makes the fabric fibers arranged diagonally to form a grid structure, which helps to evenly distribute the force and improve the strength and stability of the fabric; the symmetrical arrangement design simplifies the manufacturing process of the fabric, reduces production costs and manufacturing cycles, helps to improve production efficiency, and reduce overall project costs.

[0044] In addition to the Figure 1 , 2 Except for the case where the inclination angle A of the yarn bundle is 45° and the inclination angle B of the yarn bundle 21 of the skeleton layer is 0° and 90°, the inclination angle A of the yarn bundle and the inclination angle B of the yarn bundle 21 of the skeleton layer can adopt other angles, as long as the angles of the yarn bundles between two adjacent first main yarn layers 1, second main yarn layers 2 and skeleton layers are different, they are all within the protection scope of the present utility model.

[0045] As a preferred embodiment of the above embodiment, the specifications of the first main yarn layer 1 and the second main yarn layer 2 are 100 TEX~300 TEX, and the single-layer unit weight of the first main yarn layer 1 and the second main yarn layer 2 is 95 grams~100 grams. On the one hand, the fabric has a lightweight design, which helps to reduce the overall weight of the blade, reduce the load on the wind power generation device, and improve the performance and efficiency of the overall system; on the other hand, the lighter single-layer unit weight means that less raw materials are required per square meter of fabric, which reduces material costs and improves economy.

[0046] The above-mentioned TEX is a unit of fiber linear density, which indicates the mass of the fiber per 1000 meters in length, in grams. Therefore, 100 TEX indicates that the mass of the fiber per 1000 meters in length is 100 grams.

[0047] Among them, the specification of the skeleton layer is 50TEX~80TEX, and the unit weight of a single layer of the skeleton layer is 1.9g~2.1g; preferably, the specification of the skeleton layer is 68TEX, ensuring that the total unit area weight is controlled at about 200g, which means that the fabric has a very light characteristic. The lightweight design of the skeleton layer helps to reduce production costs. The lighter unit weight of the single layer means that less raw materials are required per square meter of the skeleton layer, thereby reducing material costs and reducing the burden during processing and transportation. The lightweight design helps to reduce the overall weight of the blade, reduce the load on the wind turbine, and improve the performance and efficiency of the overall system.

[0048] In this embodiment, the first main yarn layer 1 and the second main yarn layer 2 are both normal modulus glass fiber untwisted roving bundles. Specifically, the normal modulus glass fiber untwisted roving is an epoxy yarn with good tensile properties. At the same time, it is relatively light, which helps to reduce the overall weight of the blade.

[0049] As a preferred embodiment of the above embodiment, the skeleton layer is glass fiber yarn, which has the advantages of high strength and durability, optimized flow guidance effect, lightweight design, weather resistance and corrosion resistance, which helps to improve the performance and reliability of wind turbine blades.

[0050] In this embodiment, the binding yarn is low-elastic polyester yarn, which is used to weave the first main yarn layer 1, the second main yarn layer 2 and the skeleton layer into a whole. On the one hand, the low-elastic polyester yarn has low elasticity and can provide a good consolidation effect, firmly binding the first main yarn layer 1, the second main yarn layer 2 and the skeleton layer together, which helps to maintain the overall stability and structural integrity of the fabric; on the other hand, the low-elastic polyester yarn is relatively light, which helps to reduce the overall weight of the fabric, reduce the load on the wind power generation device, and improve the performance and efficiency of the overall system.

[0051] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A light weight biaxial flow-guiding fabric, characterized in that: It comprises a first main yarn layer and a second main yarn layer arranged up and down, and at least one skeleton layer arranged between the first main yarn layer and the second main yarn layer, and a binding yarn for binding the first main yarn layer, the second main yarn layer and the skeleton layer; The first main yarn layer includes first yarn bundles arranged in parallel in the A° direction; The second main yarn layer includes second yarn bundles arranged in parallel in the -A° direction; The skeleton layer includes spun yarn bundles arranged in parallel in the B° direction; The angles A° and B° are different, so that the first yarn bundles, the spun yarn bundles and the second yarn bundles between adjacent levels are arranged in a staggered manner.

2. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: It comprises a first skeleton layer, wherein the first skeleton layer comprises cross-shaped spun yarn bundles arranged in directions of 0° and 90°.

3. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: It comprises a first skeleton layer and a second skeleton layer, wherein the first skeleton layer comprises a spun yarn bundle arranged in a 0° direction, and the second skeleton layer comprises a spun yarn bundle arranged in a 90° direction.

4. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: The B° is -10° to 10° or 80° to 110°.

5. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: The A° is 10° to 80°.

6. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: The specifications of the first main yarn layer and the second main yarn layer are 100 TEX~300 TEX, and the single-layer unit weight of the first main yarn layer and the second main yarn layer is 95 grams~100 grams.

7. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: The specification of the skeleton layer is 50TEX~80TEX, and the unit weight of a single layer of the skeleton layer is 1.9g~2.1g.

8. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: The first main yarn layer and the second main yarn layer are both normal modulus glass fiber roving bundles.

9. The light weight biaxial flow-guiding fabric according to claim 1, characterized in that: The skeleton layer is glass fiber spun yarn.

10. The light weight biaxial flow-guiding fabric according to any one of claims 1 to 9, characterized in that: The binding yarn is low-elastic polyester yarn, and the low-elastic polyester yarn is used to weave the first main yarn layer, the second main yarn layer and the skeleton layer into a whole.

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