A parametric arrangement method and system for electric heating wires in wind turbine blade molds

Abstract

The present application provides a parametric arrangement method and system for electric heating wires in a wind turbine blade mold. The method comprises: using multiple equally spaced chord-wise dividing planes, each parallel to the chord direction, to divide the centerline of a main beam into multiple unit arcs; for each chord-wise dividing plane, determining the chord-wise arc length of each structural region corresponding to the chord-wise dividing plane based on the chord-wise intersection of the chord-wise dividing plane and the structural region; for each two adjacent chord-wise dividing planes, calculating the area of ​​a microelement based on the arc length of the unit arc between the two chord-wise dividing planes and the two chord-wise arc lengths of the same structural region corresponding to the two chord-wise dividing planes; for each structural region, dividing the structural region into multiple structural partitions based on the area of ​​each microelement within the structural region; and arranging the electric heating wires distributed on the wind turbine blade mold based on the location information and identification information of each structural partition. The present application can improve the efficiency of electric heating wire arrangement.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbine blade mold design, and in particular to a method and system for parameterizing the arrangement of electric heating wires in wind turbine blade molds. Background Art

[0002] Wind turbine blade molds are used to produce wind turbine blades. During the production process, the wind turbine blade molds need to be used to heat the wind turbine blades so that the wind turbine blades can be cured and formed as quickly as possible to shorten the production time. Therefore, electric heating wires need to be arranged on the wind turbine blade molds.

[0003] The traditional method for arranging electric heating wires in wind turbine blade molds is to first unfold the three-dimensional blade model to obtain a two-dimensional image of the blade, and then adjust the unit module boundaries multiple times to obtain multiple unit modules of equal area. The laying area of ​​each unit module is within the range of 2.2 to 2.5 square meters. This traditional arrangement method has the following shortcomings:

[0004] Dividing the irregularly shaped wind turbine blade mold into hundreds of partitions requires manual adjustment of the partition boundaries. In order to make the areas of each partition equal, the boundaries need to be continuously moved to control the area of ​​the electric heating wire within 2.2 to 2.5 square meters. After the partitioning is completed, hundreds of partitions must be marked separately, which is a large workload and inefficient in the arrangement of the electric heating wires. Summary of the Invention

[0005] In view of this, the purpose of the embodiments of the present application is to provide a method and system for parametric arrangement of electric heating wires in a wind turbine blade mold, which uses the principle of calculus to divide the wind turbine blade mold into multiple structural partitions of equal area for arranging electric heating wires, and improves the efficiency of electric heating wire arrangement by parametrically designing the arrangement process of the electric heating wires.

[0006] In a first aspect, an embodiment of the present application provides a method for parametrically arranging electric heating wires in a wind turbine blade mold, wherein the wind turbine blade mold is used to produce wind turbine blades, wherein the inner surface of the wind turbine blade mold is consistent with the outer surface size of the wind turbine blade, and the wind turbine blade mold is divided into multiple structural areas in the chord direction. The method includes:

[0007] A plurality of equally spaced chord-wise dividing surfaces respectively parallel to the chord-wise direction are used to divide the center line of the main beam of the wind turbine blade mold into a plurality of unit arcs; wherein the main beam is one of the structural areas;

[0008] For each chord-wise dividing surface, determining the chord-wise arc length of each structural region corresponding to the chord-wise dividing surface according to the chord-wise intersection point between the chord-wise dividing surface and each structural region;

[0009] For each two adjacent chordal dividing surfaces, the area of ​​the microelement is calculated based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural region corresponding to the two chordal dividing surfaces. The multiple chordal dividing surfaces divide each structural region into multiple microelements.

[0010] For each structural region, the structural region is divided into a plurality of structural partitions according to the area of ​​each microelement in the structural region; wherein the area of ​​each structural partition is equal and falls within a preset area range, and each structural partition is composed of a plurality of adjacent microelements;

[0011] The electric heating wires distributed on the wind turbine blade mold are arranged according to the position information and identification information of each structural partition.

[0012] In a possible implementation, determining, for each chordal dividing surface, according to a chordal intersection point between the chordal dividing surface and each structural region, the chordal arc length of each structural region corresponding to the chordal dividing surface includes:

[0013] For each chord-wise dividing surface, obtaining a plurality of chord-wise intersection points between the chord-wise dividing surface and each structural region;

[0014] The arc length of a chordal arc connecting a starting chordal intersection point and an ending chordal intersection point among a plurality of chordal intersection points of the chordal dividing surface and the structural region is determined as the chordal arc length of the structural region corresponding to the chordal dividing surface.

[0015] In a possible implementation, the shape of the microelement is approximated as a trapezoid, and for each two adjacent chord-wise dividing surfaces, the area of ​​the microelement is calculated based on the arc length of the unit arc between the two chord-wise dividing surfaces and the two chord-wise arc lengths of the same structural region corresponding to the two chord-wise dividing surfaces, including:

[0016] For every two adjacent chordal dividing surfaces, the arc length of the unit arc between the two chordal dividing surfaces is used as the height of the infinitesimal element, and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces are used as the upper and lower bases of the infinitesimal element. The trapezoidal area calculation formula is used to calculate the area of ​​the infinitesimal element.

[0017] In a possible implementation, for each structural region, dividing the structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region includes:

[0018] For each structural region, the sum of the areas of the individual micro-elements within the structural region is taken as the total area of ​​the structural region, and any value within the preset area range is selected as the partition area of ​​the structural partition of the structural region. The ratio of the total area of ​​the structural region to the partition area is determined as the number of structural partitions within the structural region.

[0019] If the number of structural partitions in the structural area is an integer, the adjacent infinitesimals in the structural area are superimposed in sequence to obtain multiple groups of infinitesimal groups whose area sums are equal to the partition areas, and the infinitesimal groups are used as the structural partitions of the structural area; otherwise, the ratio of the total area of ​​the structural area to the partition area is rounded, and the ratio of the total area of ​​the structural area to the rounded result is used as the partition area.

[0020] In a possible implementation, arranging the electric heating wires distributed on the wind turbine blade mold according to the location information and identification information of each structural partition includes:

[0021] Based on the position information of each structural partition, the boundary line of each structural partition is determined as the layout path of the electric heating wire on the wind turbine blade mold; based on the identification information of each structural partition, each structural partition on the wind turbine blade mold is marked.

[0022] In a second aspect, an embodiment of the present application provides a parametric arrangement system for electric heating wires in a wind turbine blade mold. The wind turbine blade mold is used to produce wind turbine blades. The inner surface of the wind turbine blade mold is consistent with the outer surface size of the wind turbine blade. The wind turbine blade mold is divided into multiple structural areas in the chord direction. The system includes Excel and two-dimensional drawing software.

[0023] The Excel is used to divide the center line of the main beam of the wind turbine blade mold into multiple unit arcs using multiple chord-wise dividing planes that are equally spaced and parallel to the chord direction; wherein the main beam is one of the structural areas;

[0024] The Excel is further used to determine, for each chordal dividing surface, the chordal arc length of each structural region corresponding to the chordal dividing surface according to the chordal intersection point between the chordal dividing surface and each structural region;

[0025] The Excel is further used to calculate the area of ​​a microelement for each two adjacent chordal dividing surfaces based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural region corresponding to the two chordal dividing surfaces; wherein the multiple chordal dividing surfaces divide each structural region into multiple microelements;

[0026] The Excel is further used to divide each structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region; wherein the area of ​​each structural partition is equal and within a preset area range, and each structural partition is composed of a plurality of adjacent microelements;

[0027] The Excel is further used to send the location information and identification information of each structural partition, as well as the drawing instructions, to the two-dimensional drawing software;

[0028] The two-dimensional drawing software is used to arrange the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition.

[0029] In a possible implementation, the Excel, when determining, for each chordal dividing surface, based on the chordal intersection point between the chordal dividing surface and each structural area, the chordal arc length of each structural area corresponding to the chordal dividing surface, includes:

[0030] For each chord-wise dividing surface, obtaining a plurality of chord-wise intersection points between the chord-wise dividing surface and each structural region;

[0031] The arc length of a chordal arc connecting a starting chordal intersection point and an ending chordal intersection point among a plurality of chordal intersection points of the chordal dividing surface and the structural region is determined as the chordal arc length of the structural region corresponding to the chordal dividing surface.

[0032] In a possible implementation, the shape of the infinitesimal element is approximated as a trapezoid. When Excel calculates the area of ​​the infinitesimal element for each two adjacent chordal dividing surfaces, based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces, the calculation includes:

[0033] For every two adjacent chordal dividing surfaces, the arc length of the unit arc between the two chordal dividing surfaces is used as the height of the infinitesimal element, and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces are used as the upper and lower bases of the infinitesimal element. The trapezoidal area calculation formula is used to calculate the area of ​​the infinitesimal element.

[0034] In a possible implementation, the Excel, when dividing each structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region, includes:

[0035] For each structural region, the sum of the areas of the individual micro-elements within the structural region is taken as the total area of ​​the structural region, and any value within the preset area range is selected as the partition area of ​​the structural partition of the structural region. The ratio of the total area of ​​the structural region to the partition area is determined as the number of structural partitions within the structural region.

[0036] If the number of structural partitions in the structural area is an integer, the adjacent infinitesimals in the structural area are superimposed in sequence to obtain multiple groups of infinitesimal groups whose area sums are equal to the partition areas, and the infinitesimal groups are used as the structural partitions of the structural area; otherwise, the ratio of the total area of ​​the structural area to the partition area is rounded, and the ratio of the total area of ​​the structural area to the rounded result is used as the partition area.

[0037] In a possible implementation, the two-dimensional drawing software, when arranging the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition, includes:

[0038] Based on the location information of each structural partition, the boundary line of each structural partition is determined as the layout path of the electric heating wire on the wind turbine blade mold, and a two-dimensional layout image of the electric heating wire on the wind turbine blade mold is drawn; based on the identification information of each structural partition, each structural partition on the wind turbine blade mold is marked.

[0039] The embodiments of the present application provide a parametric layout method and system for electric heating wires in a wind turbine blade mold. The method first uses the differential principle to calculate the area of ​​each infinitesimal element within a structural region, then uses the integral principle to superimpose adjacent infinitesimals within the structural region to obtain structural partitions with equal areas for arranging the electric heating wires. This improves the efficiency of dividing the wind turbine blade mold into structural partitions. Based on the collected identification information of each structural partition, each structural partition is automatically labeled, thereby improving the efficiency of structural partition labeling. The embodiments of the present application improve the efficiency of electric heating wire layout by parametrically designing the layout process of the electric heating wires.

[0040] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A flow chart showing a method for parameterizing the arrangement of electric heating wires in a wind turbine blade mold according to an embodiment of the present application is shown;

[0043] Figure 2 A schematic structural diagram of a wind turbine blade mold provided in an embodiment of the present application is shown;

[0044] Figure 3 A flow chart showing another method for parameterizing the arrangement of electric heating wires in a wind turbine blade mold provided by an embodiment of the present application is shown;

[0045] Figure 4 A schematic diagram of the structural partitioning of a wind turbine blade mold provided by an embodiment of the present application is shown;

[0046] Figure 5 A schematic diagram showing identification information of a wind turbine blade mold structure partition provided by an embodiment of the present application is shown;

[0047] Figure 6 A structural schematic diagram of a parameterized arrangement system of electric heating wires for a wind turbine blade mold provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0049] At present, wind turbine blade molds are used to produce wind turbine blades. During the production process, the wind turbine blade molds need to be used to heat the wind turbine blades so that the wind turbine blades can be cured and formed as quickly as possible to shorten the production time. Therefore, electric heating wires need to be arranged on the wind turbine blade molds.

[0050] The traditional method for arranging electric heating wires in wind turbine blade molds involves first unfolding the 3D blade model to obtain a 2D image of the blade, then repeatedly adjusting the unit module boundaries to create multiple unit modules of equal area, with each unit module paving an area within the range of 2.2 to 2.5 square meters. This traditional arrangement method has the following shortcomings: Dividing the irregularly shaped wind turbine blade mold into hundreds of partitions requires manual adjustment of the partition boundaries. Furthermore, to ensure that each partition has an equal area, the boundaries must be continuously moved to control the area of ​​the electric heating wires within 2.2 to 2.5 square meters. After the partitioning is completed, each of the hundreds of partitions must be individually labeled, resulting in a large workload and low efficiency in the arrangement of electric heating wires.

[0051] To address the above issues, an embodiment of the present application provides a method and system for parametrically arranging electric heating wires in a wind turbine blade mold. The method first uses the differential principle to calculate the area of ​​each microelement within a structural region, then uses the integral principle to superimpose multiple adjacent microelement elements to obtain structural partitions with equal areas for arranging the electric heating wires. This improves the efficiency of dividing the wind turbine blade mold into structural partitions. Based on the collected identification information of each structural partition, each structural partition is automatically labeled, improving the efficiency of labeling the structural partitions. The embodiment of the present application improves the efficiency of electric heating wire placement by parametrically designing the placement process of the electric heating wires.

[0052] The defects in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by this application for the above problems below should be the contributions made by the inventor to this application during the application process.

[0053] The technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. The components of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for which protection is claimed, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0054] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0055] To facilitate understanding of this embodiment, a method for parameterizing the arrangement of electric heating wires in a wind turbine blade mold disclosed in an embodiment of the present application is first introduced in detail.

[0056] See also Figure 1 As shown, Figure 1 This is a flow chart of a method for parametrically arranging electric heating wires in a wind turbine blade mold provided in an embodiment of the present application. The wind turbine blade mold is used to produce wind turbine blades. The inner surface of the wind turbine blade mold is consistent with the outer surface size of the wind turbine blade. The wind turbine blade mold is divided into multiple structural areas in the chord direction. The method includes the following steps:

[0057] S101. Use multiple chord-wise dividing surfaces that are equally spaced and parallel to the chord direction to divide the center line on the main beam of the wind turbine blade mold into multiple unit arcs; wherein the main beam is one of the structural areas.

[0058] In actual production, the wind turbine blade mold is a hollow cavity structure, and the wind turbine blade is produced in its cavity. Therefore, the inner surface of the wind turbine blade mold is consistent with the outer surface size of the wind turbine blade. The wind turbine blade is a three-dimensional structure, and accordingly, the wind turbine blade mold is also a three-dimensional structure. Figure 2 As shown, Figure 2 A schematic diagram of the structure of a wind turbine blade mold provided in an embodiment of the present application. Figure 2 In the figure, 201 is a wind turbine blade mold, and the wind turbine blade mold 201 is a projection diagram of a three-dimensional structure on a two-dimensional plane. The a0 direction is the chord direction. Along the chord direction, the wind turbine blade mold is divided into multiple structural areas. Optionally, the wind turbine blade mold is divided into a trailing edge area, a main beam area, and a leading edge area with the main beam cap as the dividing line, wherein L1 is the trailing edge line, L5 is the leading edge line, L2 and L4 are the boundaries of the main beams respectively, the area between L1 and L2 is the trailing edge area, the area between L2 and L4 is the main beam area, and the area between L4 and L5 is the leading edge area.

[0059] Figure 2 L is located between L2 and L4. 30 Indicates the center line of the main beam. 30 is the projection of the center line of the main beam, so L 30 It is a straight line. In reality, the center line of the main beam is ups and downs on the wind turbine blade mold, which is an arc. Figure 2 In the middle, L is located below L5 31 Indicates the actual center line of the main beam.

[0060] The chordal dividing surface is parallel to the chordal direction, and the distance between every two adjacent chordal dividing surfaces is equal. Figure 2 In the figure, downward arrows a1, a2, a3, a4, a5, a6, a7, a8... are used to represent multiple chordal dividing surfaces that are equally spaced and parallel to the chordal direction. The chordal dividing surfaces divide the center line L of the main beam. 31 Divide into multiple unit arcs, which are: arc A1A2, arc A2A3, arc A3A4, arc A4A5, arc A5A6, arc A6A7, arc A7A8... Get the arc length of each unit arc and the coordinates of the endpoints of each unit arc.

[0061] S102 : For each chord-wise dividing surface, determine the chord-wise arc length of each structural region corresponding to the chord-wise dividing surface according to the chord-wise intersection point between the chord-wise dividing surface and each structural region.

[0062] The chordal dividing surface divides the wind turbine blade mold along the chord direction. The chordal dividing surface intersects each structural region distributed along the chord direction, obtaining a chordal intersection point between each chordal dividing surface and each structural region. The chordal intersection points of the chordal dividing surface and the structural region are sequentially connected to obtain a chordal arc where the chordal dividing surface intersects the structural region. The length of the chordal arc is obtained, which is the chordal arc length between the chordal dividing surface and the structural region. It should be noted that, assuming there are N chordal dividing surfaces and M structural regions, each chordal dividing surface intersects with M structural regions. Accordingly, each chordal dividing surface corresponds to M chordal arc lengths.

[0063] exist Figure 2 In the equation, each chord-wise dividing surface intersects with the trailing edge region, the main beam region, and the leading edge region, and the chord-wise arc lengths of the trailing edge region, the main beam region, and the leading edge region corresponding to the chord-wise dividing surface are obtained. If there are N chord-wise dividing surfaces, N×3 chord-wise arc lengths are finally obtained. For the chord-wise dividing surface a1, the chord-wise arcs that intersect with the trailing edge region, the main beam region, and the leading edge region are arcs B. 11 B 12 Arc B 12 B 13 Arc B 13 B 14 For the chord-wise dividing surface a2, the chord-wise arcs intersecting the trailing edge area, the main beam area, and the leading edge area are arcs B 21 B 22 Arc B 22 B 23 Arc B 23 B 24 For the chord-wise dividing surface a3, the chord-wise arcs intersecting with the trailing edge area, the main beam area, and the leading edge area are arcs B 31 B 32 Arc B 32 B 33 Arc B 33 B 34 . Similar to the center line of the main beam, Figure 2 Although each chordal arc in the figure is represented as a straight line, each chordal arc on the wind turbine blade mold is a curved arc. The arc length of the chordal arc is determined according to multiple chordal intersection points distributed on the chordal arc, which is the chordal arc length.

[0064] For further information, see Figure 3 As shown, Figure 3 A flowchart of another method for parameterizing the arrangement of electric heating wires in a wind turbine blade mold provided in an embodiment of the present application, wherein for each chord-wise dividing surface, the chord-wise arc length of each structural region corresponding to the chord-wise dividing surface is determined based on the chord-wise intersection of the chord-wise dividing surface and each structural region, including:

[0065] S1021. For each chord-wise dividing surface, obtain multiple chord-wise intersection points between the chord-wise dividing surface and each structural region.

[0066] S1022: Determine the length of a chordal arc connecting a starting chordal intersection point and an ending chordal intersection point among a plurality of chordal intersection points of the chordal dividing surface and the structural region as the chordal arc length of the structural region corresponding to the chordal dividing surface.

[0067] Combining step S1021 and step S1022, there are multiple chordal intersection points distributed on the intersecting arc line between each chordal dividing surface and each structural area. The first chordal intersection point among the multiple chordal intersection points is used as the starting chordal intersection point, the last chordal intersection point among the multiple chordal intersection points is used as the ending chordal intersection point, and the arc connecting the starting chordal intersection point and the ending chordal intersection point is used as the chordal arc. The arc length of the chordal arc is obtained, which is the chordal arc length.

[0068] exist Figure 2 In the example, taking the chord-wise dividing surface a1 as an example, among the multiple chord-wise intersection points on the arc line where the chord-wise dividing surface a1 intersects with the trailing edge area, the starting chord-wise intersection point and the ending chord-wise intersection point are B 11 and B 12 , arc B 11 B 12 Determine the chord-wise arc length of the trailing edge region corresponding to the chord-wise dividing surface a1.

[0069] S103. For each two adjacent chordal dividing surfaces, calculate the area of ​​the infinitesimal element based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural region corresponding to the two chordal dividing surfaces; wherein the multiple chordal dividing surfaces divide each structural region into multiple infinitesimal elements.

[0070] In each structural region, any two adjacent chordal dividing planes can separate a microelement from the structural region. If there are N chordal dividing planes, there are N chordal arcs in the structural region, which can separate the structural region into (N-1) microelements. Figure 2 In the figure, the adjacent chord-wise dividing planes a1 and a2 divide the microelements in the trailing edge area, the main beam area, and the leading edge area respectively: 11 B 21 B 22 B 12 、B 12 B 22 B 23 B 13 、B 13 B 23 B 24 B 14 .

[0071] If there are M structural areas, each two adjacent chordal dividing planes divide M micro-elements in the chordal direction, and the length of the unit arc between the two adjacent chordal dividing planes is used as the distance between the two chordal arcs of the M micro-elements. Figure 2 In the figure, unit arcs A1 and A2 are chord-direction arcs B 11 B 12 With chord arc B 21 B 22 The spacing and chord arc B 12 B 13 With chord arc B 22 B 23 The spacing and chord arc B 13 B 14 With chord arc B 23 B 24 The unit arcs A2A3 are respectively the chord arcs B 21 B 22 With chord arc B 31 B 32 The spacing and chord arc B 22 B 23 With chord arc B 32 B 33 The spacing and chord arc B 23 B 24 With chord arc B 33 B 34 For each infinitesimal element, the area of ​​the infinitesimal element is calculated based on the arc lengths of the two chordal arcs and the distance between the two chordal arcs.

[0072] Furthermore, the shape of the infinitesimal element is approximated as a trapezoid. For each two adjacent chord-wise dividing surfaces, the area of ​​the infinitesimal element is calculated based on the arc length of the unit arc between the two chord-wise dividing surfaces and the two chord-wise arc lengths of the same structural region corresponding to the two chord-wise dividing surfaces, including:

[0073] For every two adjacent chordal dividing surfaces, the arc length of the unit arc between the two chordal dividing surfaces is used as the height of the infinitesimal element, and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces are used as the upper and lower bases of the infinitesimal element. The trapezoidal area calculation formula is used to calculate the area of ​​the infinitesimal element.

[0074] For each infinitesimal element, use the two chord arcs as the upper and lower bases of the trapezoid, and the unit arc between the two chord arcs as the height of the trapezoid. Use the trapezoid area calculation formula to calculate the area of ​​the infinitesimal element. For example, for infinitesimal element B 11 B 21 B 22 B 12 , [1 / 2×the arc length of the unit arc A1A2×(the chord arc B 11 B 12Arc length + chord arc B 21 B 22 The calculation result of arc length)] is taken as the infinitesimal element B 11 B 21 B 22 B 12 area.

[0075] S104 . For each structural region, divide the structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region; wherein the area of ​​each structural partition is equal and falls within a preset area range, and each structural partition is composed of a plurality of adjacent microelements.

[0076] When segmenting a wind turbine blade mold, the spacing between the chord-wise segmentation planes is very small, optionally 10 mm. Compared to the size of the wind turbine blade mold, a microelement approximately 10 mm wide is very small. By superimposing adjacent microelement sections, the wind turbine blade mold is partitioned to obtain multiple structural partitions. Compared to the traditional method of continuously adjusting the boundaries of structural partitions, the microelement sections are extremely small. By adding or subtracting adjacent microelement sections, it is relatively easy to make the areas of each structural partition the same, and to control the area of ​​each structural partition within a preset area range, optionally 2.2 to 2.5 square meters.

[0077] Furthermore, for each structural region, the structural region is divided into a plurality of structural partitions according to the area of ​​each microelement in the structural region, including:

[0078] For each structural region, the sum of the areas of the individual microelements within the structural region is taken as the total area of ​​the structural region, and any value from the preset area range is taken as the partition area of ​​the structural partition of the structural region. The ratio of the total area of ​​the structural region to the partition area is determined as the number of structural partitions within the structural region. If the number of structural partitions within the structural region is an integer, the adjacent microelements within the structural region are superimposed in sequence to obtain multiple groups of microelement groups whose area sums are equal to the partition area, and the microelement groups are taken as the structural partitions of the structural region. Otherwise, the ratio of the total area of ​​the structural region to the partition area is rounded, and the ratio of the total area of ​​the structural region to the rounded result is taken as the partition area.

[0079] When dividing each structural region into structural partitions, it is necessary to ensure that the structural partitions contained in the structural region are integers, and to ensure that the areas of each structural partition are equal and within a preset area range. For each structural region, first, the sum of the areas of each infinitesimal element in the structural region is calculated as the total area of ​​the structural region. Then, a value is randomly selected from a preset area range as the partition area of ​​each structural partition in the structural region. The ratio of the total area to the partition area is calculated. The ratio is the number of structural partitions in the structural region. If the number of structural partitions is an integer, it means that the total area of ​​the structural region is exactly divided by the above number of structural partitions. In this case, the structural partitions can be divided based on the infinitesimal elements in the structural region. The specific division method is: the infinitesimal elements in the structural region are arranged in order according to the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, etc., and the areas of the infinitesimal elements are added starting from number 1. If the total area of ​​the 50 infinitesimal elements numbered 1 to 50 is equal to the partition area after the addition, the addition is stopped and the 50 infinitesimal elements numbered 1 to 50 are used as the first infinitesimal element group. The areas of the infinitesimal elements are added starting from number 51 and repeated until the last infinitesimal element is added to obtain the last infinitesimal element group. The infinitesimal element group is used as the structural partition of the structural region. If the ratio of the total area of ​​the structural region to the partition area is not an integer, the partition area needs to be adjusted. The specific adjustment method is: round the ratio of the total area of ​​the structural region to the partition area, use the rounded result as the number of structural partitions (Q), and use the ratio of the total area of ​​the structural region to the updated number of structural partitions (Q) as the partition area. Then, use this partition area as the total area of ​​the micro-element to divide the structural partitions of the structural region. In practice, rounding includes rounding up and rounding down. Rounding up to obtain Q1 and rounding down to obtain Q2. Calculate the ratio (K1) of the total area of ​​the structural region to Q1 and the ratio (K2) of the total area of ​​the structural region to Q2 respectively. If K1 and K2 are both within the preset area range, then select an integer from Q1 and Q2 as the number of structural partitions in the structural region. If only K1 is within the preset area range, then use Q1 as the number of structural partitions in the structural region.

[0080] S105 , arranging the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition.

[0081] Based on the position information of each structural partition of the wind turbine blade mold, a schematic diagram of the structural partitions in the wind turbine blade mold is drawn. Since the electric heating wires are arranged along the boundaries of the structural partitions, the schematic diagram of the structural partitions in the wind turbine blade mold is also called a two-dimensional layout image of the electric heating wires on the wind turbine blade mold. Each structural partition in the above schematic diagram is labeled according to the identification information of each structural partition. The position information of the structural partition is the boundary coordinate point of the structural partition; the identification information includes: partition identifier, partition length, and partition end position coordinates. After dividing the centerline of the main beam into multiple unit arcs, the endpoint coordinates of each unit arc are obtained. For each structural partition, the starting endpoint coordinates (first coordinates) of the unit arc corresponding to the first infinitesimal element in the infinitesimal element group of the structural partition and the ending endpoint coordinates (second coordinates) of the unit arc corresponding to the last infinitesimal element in the infinitesimal element group of the structural partition are used as the partition boundary coordinate points; the difference between the second coordinate and the first coordinate is used as the partition length; and the second coordinate is used as the partition end position coordinate.

[0082] For example, in the trailing edge region, the infinitesimal element B 11 B 21 B 22 B 12 , micro dollar B 21 B 31 B 32 B 22 The first structural partition that constitutes the trailing edge area has its boundary coordinates at points A1 and A3. The partition length is the difference between the coordinates of points A3 and A1. The partition end position is at point A3. Figure 4 As shown, Figure 4 A schematic diagram of a wind turbine blade mold structure partition provided in an embodiment of the present application, Figure 4 In the figure, T1-T4 are the four structural partitions of the leading edge area, T5-T8 are the four structural partitions of the main beam area, T9-T14 are the six structural partitions of the trailing edge area, and T1-T14 are the partition identifiers of each structural partition.

[0083] Furthermore, the arrangement of the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition includes:

[0084] Based on the position information of each structural partition, the boundary line of each structural partition is determined as the layout path of the electric heating wire on the wind turbine blade mold; based on the identification information of each structural partition, each structural partition on the wind turbine blade mold is marked.

[0085] Arrange the electric heating wires along the boundary lines of the structural partitions, draw a schematic diagram of the structural partitions in the wind turbine blade mold, and mark the identification information of each structural partition in the schematic diagram. Figure 5As shown, Figure 5 A schematic diagram of the identification information of the wind turbine blade mold structure provided in the embodiment of the present application is provided. Figure 5 In the figure, the partition length of the structural partition T10 (the difference between the coordinate point X2 and the coordinate point X1) is 1690 mm, and the partition end position coordinate (the coordinate of the coordinate point X2) is 3670 mm.

[0086] The present embodiment provides a parametric layout method for electric heating wires in a wind turbine blade mold. The method first uses the differential principle to calculate the area of ​​each microelement within a structural region, then uses the integral principle to superimpose multiple adjacent microelement elements to obtain structural partitions with equal areas. This improves the efficiency of segmenting the wind turbine blade mold into structural partitions. Based on the collected identification information of each structural partition, each structural partition is automatically labeled, improving the efficiency of structural partition labeling. The present embodiment improves the efficiency of electric heating wire layout by parametrically designing the layout process.

[0087] Based on the same inventive concept, the embodiment of the present application also provides a parametric arrangement system of electric heating wires for wind turbine blade molds corresponding to the parametric arrangement method of electric heating wires for wind turbine blade molds. Since the principle of solving the problem by the system in the embodiment of the present application is similar to the parametric arrangement method of electric heating wires for wind turbine blade molds mentioned above in the embodiment of the present application, the implementation of the system can refer to the implementation of the method, and the repeated parts will not be repeated.

[0088] See also Figure 6 As shown, Figure 6 A structural schematic diagram of a parametric arrangement system of electric heating wires for a wind turbine blade mold provided in an embodiment of the present application, wherein the wind turbine blade mold is used to produce wind turbine blades, wherein the inner surface of the wind turbine blade mold is consistent with the outer surface size of the wind turbine blade, and the wind turbine blade mold is divided into multiple structural areas in the chord direction, and the system includes Excel 601 and two-dimensional drawing software 602.

[0089] The Excel601 is used to divide the center line of the main beam of the wind turbine blade mold into multiple unit arcs using multiple chord-wise dividing surfaces that are equally spaced and parallel to the chord direction; wherein the main beam is one of the structural areas;

[0090] The Excel 601 is further configured to determine, for each chordal dividing surface, a chordal arc length of each structural region corresponding to the chordal dividing surface according to a chordal intersection point between the chordal dividing surface and each structural region;

[0091] The Excel 601 is further configured to calculate, for each two adjacent chordal dividing surfaces, the area of ​​a microelement based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural region corresponding to the two chordal dividing surfaces; wherein the multiple chordal dividing surfaces divide each structural region into multiple microelements;

[0092] The Excel 601 is further configured to divide each structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region; wherein the area of ​​each structural partition is equal and falls within a preset area range, and each structural partition is composed of a plurality of adjacent microelements;

[0093] The Excel 601 is further used to send the location information and identification information of each structural partition, as well as the drawing instructions, to the two-dimensional drawing software 602;

[0094] The two-dimensional drawing software 602 is used to arrange the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition.

[0095] In a possible implementation, Excel 601, when determining, for each chordal dividing surface, based on the chordal intersection point between the chordal dividing surface and each structural region, the chordal arc length of each structural region corresponding to the chordal dividing surface, includes:

[0096] For each chord-wise dividing surface, obtaining a plurality of chord-wise intersection points between the chord-wise dividing surface and each structural region;

[0097] The arc length of a chordal arc connecting a starting chordal intersection point and an ending chordal intersection point among a plurality of chordal intersection points of the chordal dividing surface and the structural region is determined as the chordal arc length of the structural region corresponding to the chordal dividing surface.

[0098] In one possible implementation, the shape of the microelement is approximated as a trapezoid. When Excel 601 calculates the area of ​​the microelement for each two adjacent chordal dividing surfaces, based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural region corresponding to the two chordal dividing surfaces, the calculation includes:

[0099] For every two adjacent chordal dividing surfaces, the arc length of the unit arc between the two chordal dividing surfaces is used as the height of the infinitesimal element, and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces are used as the upper and lower bases of the infinitesimal element. The trapezoidal area calculation formula is used to calculate the area of ​​the infinitesimal element.

[0100] In a possible implementation, Excel 601, when dividing each structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region, includes:

[0101] For each structural region, the sum of the areas of the individual micro-elements within the structural region is taken as the total area of ​​the structural region, and any value within the preset area range is selected as the partition area of ​​the structural partition of the structural region. The ratio of the total area of ​​the structural region to the partition area is determined as the number of structural partitions within the structural region.

[0102] If the number of structural partitions in the structural area is an integer, the adjacent infinitesimals in the structural area are superimposed in sequence to obtain multiple groups of infinitesimal groups whose area sums are equal to the partition areas, and the infinitesimal groups are used as the structural partitions of the structural area; otherwise, the ratio of the total area of ​​the structural area to the partition area is rounded, and the ratio of the total area of ​​the structural area to the rounded result is used as the partition area.

[0103] In a possible implementation, the two-dimensional drawing software 602 , when arranging the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition, includes:

[0104] Based on the location information of each structural partition, the boundary line of each structural partition is determined as the layout path of the electric heating wire on the wind turbine blade mold, and a two-dimensional layout image of the electric heating wire on the wind turbine blade mold is drawn; based on the identification information of each structural partition, each structural partition on the wind turbine blade mold is marked.

[0105] The present embodiment provides a parametric layout system for electric heating wires in wind turbine blade molds. This system first uses the differential principle to calculate the area of ​​each microelement within a structural region, then uses the integral principle to superimpose multiple adjacent microelement elements to obtain structural partitions of equal area. This improves the efficiency of segmenting the wind turbine blade mold into structural partitions. Based on the collected identification information for each structural partition, the system automatically labels each structural partition, improving the efficiency of structural partition labeling. The present embodiment improves the efficiency of electric heating wire layout by parametrically designing the layout process.

[0106] In addition, the embodiments of the present application enable data exchange between Excel and two-dimensional drawing software. Excel imports the location information and identification information of the structural partitions into the two-dimensional drawing software, allowing the two-dimensional drawing software to complete the drawing and annotation. Moreover, under normal circumstances, only when the staff enters the drawing command in the two-dimensional drawing software can the two-dimensional drawing software complete the drawing and annotation based on the received data. Excel also sends the drawing command to the two-dimensional drawing software, allowing the two-dimensional drawing software to automatically draw and annotate after receiving the data imported by Excel, thus reducing the use of human resources.

[0107] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-mentioned embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for parametrically arranging electric heating wires in a wind turbine blade mold, wherein the wind turbine blade mold is used to produce wind turbine blades, wherein the inner surface of the wind turbine blade mold is consistent with the outer surface size of the wind turbine blade, and the wind turbine blade mold is divided into multiple structural areas in the chord direction, characterized in that: The method comprises: A plurality of equally spaced chord-wise dividing surfaces respectively parallel to the chord-wise direction are used to divide the center line of the main beam of the wind turbine blade mold into a plurality of unit arcs; wherein the main beam is one of the structural areas; For each chord-wise dividing surface, determining the chord-wise arc length of each structural region corresponding to the chord-wise dividing surface according to the chord-wise intersection point between the chord-wise dividing surface and each structural region; For each two adjacent chordal dividing surfaces, the area of ​​the microelement is calculated based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural region corresponding to the two chordal dividing surfaces. The multiple chordal dividing surfaces divide each structural region into multiple microelements. For each structural region, the structural region is divided into a plurality of structural partitions according to the area of ​​each microelement in the structural region; wherein the area of ​​each structural partition is equal and falls within a preset area range, and each structural partition is composed of a plurality of adjacent microelements; The electric heating wires distributed on the wind turbine blade mold are arranged according to the position information and identification information of each structural partition.

2. The method for parameterizing the arrangement of electric heating wires in a wind turbine blade mold according to claim 1, characterized in that: The step of determining, for each chordal dividing surface, the chordal arc length of each structural region corresponding to the chordal dividing surface according to the chordal intersection point between the chordal dividing surface and each structural region comprises: For each chord-wise dividing surface, obtaining a plurality of chord-wise intersection points between the chord-wise dividing surface and each structural region; The arc length of a chordal arc connecting a starting chordal intersection point and an ending chordal intersection point among a plurality of chordal intersection points of the chordal dividing surface and the structural region is determined as the chordal arc length of the structural region corresponding to the chordal dividing surface.

3. The parametric arrangement method of electric heating wires for wind turbine blade molds according to claim 1, characterized in that: The shape of the infinitesimal element is approximated as a trapezoid. For each two adjacent chord-wise dividing surfaces, the area of ​​the infinitesimal element is calculated based on the arc length of the unit arc between the two chord-wise dividing surfaces and the two chord-wise arc lengths of the same structural region corresponding to the two chord-wise dividing surfaces, including: For every two adjacent chordal dividing surfaces, the arc length of the unit arc between the two chordal dividing surfaces is used as the height of the infinitesimal element, and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces are used as the upper and lower bases of the infinitesimal element. The trapezoidal area calculation formula is used to calculate the area of ​​the infinitesimal element.

4. The parametric arrangement method of electric heating wires for wind turbine blade molds according to claim 1, characterized in that: For each structural region, the structural region is divided into a plurality of structural partitions according to the area of ​​each microelement in the structural region, including: For each structural region, the sum of the areas of the individual micro-elements within the structural region is taken as the total area of ​​the structural region, and any value within the preset area range is selected as the partition area of ​​the structural partition of the structural region. The ratio of the total area of ​​the structural region to the partition area is determined as the number of structural partitions within the structural region. If the number of structural partitions in the structural area is an integer, the adjacent infinitesimals in the structural area are superimposed in sequence to obtain multiple groups of infinitesimal groups whose area sums are equal to the partition areas, and the infinitesimal groups are used as the structural partitions of the structural area; otherwise, the ratio of the total area of ​​the structural area to the partition area is rounded, and the ratio of the total area of ​​the structural area to the rounded result is used as the partition area.

5. The parametric arrangement method of electric heating wires for wind turbine blade molds according to claim 1, characterized in that: The method of arranging the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition includes: Based on the position information of each structural partition, the boundary line of each structural partition is determined as the layout path of the electric heating wire on the wind turbine blade mold; based on the identification information of each structural partition, each structural partition on the wind turbine blade mold is marked.

6. A parametric arrangement system for electric heating wires in a wind turbine blade mold, wherein the wind turbine blade mold is used to produce wind turbine blades, wherein the inner surface of the wind turbine blade mold is consistent with the outer surface size of the wind turbine blade, and the wind turbine blade mold is divided into multiple structural areas in the chord direction, characterized in that: The system includes Excel and two-dimensional drawing software; The Excel is used to divide the center line of the main beam of the wind turbine blade mold into multiple unit arcs using multiple chord-wise dividing planes that are equally spaced and parallel to the chord direction; wherein the main beam is one of the structural areas; The Excel is further used to determine, for each chordal dividing surface, the chordal arc length of each structural region corresponding to the chordal dividing surface according to the chordal intersection point between the chordal dividing surface and each structural region; The Excel is further used to calculate the area of ​​a microelement for each two adjacent chordal dividing surfaces based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural region corresponding to the two chordal dividing surfaces; wherein the multiple chordal dividing surfaces divide each structural region into multiple microelements; The Excel is further used to divide each structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region; wherein the area of ​​each structural partition is equal and within a preset area range, and each structural partition is composed of a plurality of adjacent microelements; The Excel is further used to send the location information and identification information of each structural partition, as well as the drawing instructions, to the two-dimensional drawing software; The two-dimensional drawing software is used to arrange the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition.

7. The wind turbine blade mold electric heating wire parameterized layout system according to claim 6, characterized in that: The Excel method, when determining, for each chordal dividing surface, based on the chordal intersection point between the chordal dividing surface and each structural area, the chordal arc length of each structural area corresponding to the chordal dividing surface, includes: For each chord-wise dividing surface, obtaining a plurality of chord-wise intersection points between the chord-wise dividing surface and each structural region; The arc length of a chordal arc connecting a starting chordal intersection point and an ending chordal intersection point among a plurality of chordal intersection points of the chordal dividing surface and the structural region is determined as the chordal arc length of the structural region corresponding to the chordal dividing surface.

8. The wind turbine blade mold electric heating wire parameterized layout system according to claim 6, characterized in that: The shape of the infinitesimal element is approximated as a trapezoid. The Excel method, for each two adjacent chordal dividing surfaces, calculates the area of ​​the infinitesimal element based on the arc length of the unit arc between the two chordal dividing surfaces and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces, including: For every two adjacent chordal dividing surfaces, the arc length of the unit arc between the two chordal dividing surfaces is used as the height of the infinitesimal element, and the two chordal arc lengths of the same structural area corresponding to the two chordal dividing surfaces are used as the upper and lower bases of the infinitesimal element. The trapezoidal area calculation formula is used to calculate the area of ​​the infinitesimal element.

9. The wind turbine blade mold electric heating wire parameterized layout system according to claim 6, characterized in that: The Excel, when dividing each structural region into a plurality of structural partitions according to the area of ​​each microelement in the structural region, includes: For each structural region, the sum of the areas of the individual micro-elements within the structural region is taken as the total area of ​​the structural region, and any value within the preset area range is selected as the partition area of ​​the structural partition of the structural region. The ratio of the total area of ​​the structural region to the partition area is determined as the number of structural partitions within the structural region. If the number of structural partitions in the structural area is an integer, the adjacent infinitesimals in the structural area are superimposed in sequence to obtain multiple groups of infinitesimal groups whose area sums are equal to the partition areas, and the infinitesimal groups are used as the structural partitions of the structural area; otherwise, the ratio of the total area of ​​the structural area to the partition area is rounded, and the ratio of the total area of ​​the structural area to the rounded result is used as the partition area.

10. The wind turbine blade mold electric heating wire parameterized layout system according to claim 6, characterized in that: The two-dimensional drawing software, when arranging the electric heating wires distributed on the wind turbine blade mold according to the position information and identification information of each structural partition, includes: Based on the location information of each structural partition, the boundary line of each structural partition is determined as the layout path of the electric heating wire on the wind turbine blade mold, and a two-dimensional layout image of the electric heating wire on the wind turbine blade mold is drawn; based on the identification information of each structural partition, each structural partition on the wind turbine blade mold is marked.

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