A method for installing a wind turbine blade UD mould

Abstract

The application discloses a kind of installation methods of wind power blade UD mould.The installation method of the application includes the following steps: (1) mould steel frame horizontal adjustment: using horizontal pipe, comparing mould steel frame lower bottom, low point is lifted and pad solid iron sheet;(2) profile scanning: using laser tracker to collect mould profile point data;(3) profile height adjustment: the point data together in SA software is calculated, obtains the height difference of all points and theoretical mould surface, according to this result, regional adjustment is carried out;(4) axial adjustment: using laser tracker to mould center line cross mark point, and carries out axial adjustment;(5) overall fitting: after mould overall adjustment is completed, mould is scanned again, and through up and down adjustment mechanism, until all data meet acceptance standard.The mould installation method of the application can effectively solve the problem of long time-consuming installation, unstable product quality, so as to improve mould installation quality and efficiency.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine blades, and specifically relates to an installation method for a UD mold for wind turbine blades. Background Technology

[0002] UD molds for wind turbine blades are used to form load-bearing components such as the blade main beam and web. These parts need to be reinforced with UD fabric to withstand the main loads of the blade (such as bending and tension). The design, manufacturing and installation quality of UD molds for wind turbine blades directly affect the performance of key components such as the blade main beam, and thus determine the overall mechanical performance and reliability of the blade. Among them, the installation of UD molds for wind turbine blades is a key link to ensure the precision and efficiency of blade production.

[0003] The UD mold for wind turbine blades has a unique shape, resembling a "C," as shown in the image below. Its fiberglass surface is segmented with "cross" markings to adjust the mold's shape. Each marking forms a straight line; the greater the curvature, the more segments are used. Currently, installation involves stringing a rope from the blade root to the tip and adjusting the distance between the markings and the rope. This existing method of installing UD molds for wind turbine blades has the following drawbacks: it is time-consuming, difficult to operate, and the rope is subject to vibration and swaying, which cannot fully guarantee the mold's accuracy. Summary of the Invention

[0004] To address the problems existing in the above-mentioned background technology, the present invention provides a novel method for installing UD molds for wind turbine blades. This method can effectively solve the problems of long installation time and unstable product quality, thereby improving the installation quality and efficiency of the molds.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] A method for installing a wind turbine blade UD mold includes the following steps:

[0007] (2) Horizontal adjustment of mold steel frame: Since the ground where the mold is installed is not absolutely horizontal, it is necessary to adjust the overall level of the mold. Use a level pipe at intervals of 8 to 10 meters to compare with the bottom of the mold steel frame, raise the lowest point, and shim with iron plates.

[0008] (2) Surface scanning: Use a laser tracker to collect mold surface point data;

[0009] The mold surface acquisition and measurement range includes the beveled edge of the frustum, the cavity, and the flange;

[0010] The laser tracker's acquisition density is set as follows: the spacing between acquisition points is set to 30–50 mm;

[0011] The acquisition method is as follows: using a target ball to guide the laser beam, the mold surface is scanned in a uniform serpentine pattern to obtain the required point data;

[0012] (3) Adjustment of surface height: The point data collected in step (2) of the bevel, cavity and flange are calculated together in SA software to obtain the height difference between all points and the theoretical mold surface; the height difference obtained in the first calculation is often a regional deviation, so regional adjustment is made based on this result;

[0013] The adjustment method is similar to step (1), that is, the low point steel frame is raised to the corresponding deviation data, and the iron sheet is shimmed, and the iron sheet under the high point steel frame is removed to the corresponding thickness.

[0014] (4) Axial adjustment: After the steel frame is adjusted, the laser tracker is used to re-collect and measure the hypotenuse of the frustum. At the same time, the laser tracker is used to take points on the crosshairs of the mold center line. The crosshair data are connected into a straight line. Observe whether the chord direction data is consistent with the hypotenuse data. If they are consistent, the axis is adjusted. After adjustment, the hypotenuse and crosshair axis vector are within 2mm.

[0015] The center line of the mold is spaced at least 1 to 3 meters apart between every two crosshair markers.

[0016] If the chord direction data of the straight line formed by connecting the crosshair data is inconsistent with the hypotenuse data of the frustum, repeat step (3) to adjust the height of the surface until they are consistent, and then adjust the axis.

[0017] Because the mold shape is irregular, before the posture is adjusted, the straight line formed by the crosshairs may sometimes contradict the situation shown by the hypotenuse of the frustum. In this case, the hypotenuse of the frustum shall prevail.

[0018] (5) Overall fitting: After the overall mold adjustment is completed, the mold is re-scanned to collect mold surface point data. The height difference between all points and the theoretical mold surface is calculated in SA software. At this time, the result only has deviations in local and individual positions. The mechanical mechanism connecting the fiberglass surface and the steel frame is adjusted up and down until all data meet the acceptance criteria.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The installation method described in this invention shortens the installation cycle of the UD mold for wind turbine blades by at least 12 hours;

[0021] (2) The installation method described in this invention can improve the installation quality of the UD mold for wind turbine blades and ensure a 100% pass rate for the position of the UD product;

[0022] (3) Using the method described in this invention to install the UD mold for wind turbine blades saves 6 person-times of installation labor. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the UD mold structure for wind turbine blades according to the present invention.

[0024] Figure 2 This is a schematic diagram of the crosshair markings on the center line of the mold described in this invention.

[0025] Figure 1 The components are labeled as follows: 1. Hinged edge of frustum, 2. Flanged edge, 3. Steel frame, 4. Cavity. Detailed Implementation

[0026] The technical solution of the present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0027] A method for installing a wind turbine blade UD mold includes the following steps:

[0028] (3) Horizontal adjustment of mold steel frame: Since the ground where the mold is installed is not absolutely horizontal, it is necessary to adjust the overall level of the mold. Use a level pipe at intervals of 8 to 10 meters to compare with the bottom of the mold steel frame, raise the lowest point, and shim with iron plates.

[0029] (2) Surface scanning: Use a laser tracker to collect mold surface point data;

[0030] The mold surface acquisition and measurement range includes the beveled edge of the frustum, the cavity, and the flange;

[0031] The laser tracker's acquisition density is set as follows: the spacing between acquisition points is set to 30–50 mm;

[0032] Acquisition method: Using a target ball to guide the laser beam, the mold surface is scanned in a uniform serpentine pattern to obtain the required point data;

[0033] (3) Adjustment of surface height: The point data collected in step (2) of the bevel, cavity and flange are calculated together in SA software to obtain the height difference between all points and the theoretical mold surface; the height difference obtained in the first calculation is often a regional deviation, so regional adjustment is made based on this result;

[0034] The adjustment method is similar to step (1), that is, the low point steel frame is raised to the corresponding deviation data, and the iron sheet is shimmed, and the iron sheet under the high point steel frame is removed to the corresponding thickness.

[0035] (4) Axial adjustment: After the steel frame is adjusted, the laser tracker is used to re-collect and measure the hypotenuse of the frustum. At the same time, the laser tracker is used to take points on the crosshairs of the mold center line. The crosshair data are connected into a straight line. Observe whether the chord direction data is consistent with the hypotenuse data. If they are consistent, the axis is adjusted. After adjustment, the hypotenuse and crosshair axis vector are within 2mm.

[0036] The center line of the mold is marked with a spacing of 1 to 3 meters between every two crosshair points;

[0037] If the chord direction data of the straight line formed by connecting the crosshair data is inconsistent with the hypotenuse data of the frustum, repeat step (3) to adjust the height of the surface until they are consistent, and then adjust the axis.

[0038] Because the mold shape is irregular, before the posture is adjusted, the straight line formed by the crosshairs may sometimes contradict the situation shown by the hypotenuse of the frustum. In this case, the hypotenuse of the frustum shall prevail.

[0039] (5) Overall fitting: After the overall mold adjustment is completed, the mold is re-scanned to collect mold surface point data. The height difference between all points and the theoretical mold surface is calculated in SA software. At this time, the result only has deviations in local and individual positions. The mechanical mechanism connecting the fiberglass surface and the steel frame is adjusted up and down until all data meet the acceptance criteria.

[0040] Example

[0041] A method for installing a wind turbine blade UD mold includes the following steps:

[0042] (4) Horizontal adjustment of mold steel frame: Since the ground where the mold is installed is not absolutely horizontal, it is necessary to adjust the overall level of the mold. Use a level pipe at 9m intervals to compare the bottom of the mold steel frame, raise the lowest point, and shim with iron plates.

[0043] (2) Surface scanning: Use a laser tracker to collect mold surface point data;

[0044] The mold surface acquisition and measurement range includes the beveled edge of the frustum, the cavity, and the flange;

[0045] The laser tracker's acquisition density is set as follows: the spacing between acquisition points is 40mm.

[0046] The acquisition method is as follows: using a target ball to guide the laser beam, the mold surface is scanned in a uniform serpentine pattern to obtain the required point data;

[0047] (3) Adjustment of surface height: The point data collected in step (2) of the bevel, cavity and flange are calculated together in SA software to obtain the height difference between all points and the theoretical mold surface; the height difference obtained in the first calculation is often a regional deviation, so regional adjustment is made based on this result;

[0048] The adjustment method is similar to step (1), that is, the low point steel frame is raised to the corresponding deviation data, and the iron sheet is shimmed, and the iron sheet under the high point steel frame is removed to the corresponding thickness.

[0049] (4) Axial adjustment: After the steel frame is adjusted, the laser tracker is used to re-collect and measure the hypotenuse of the frustum. At the same time, the laser tracker is used to take points on the crosshairs of the mold center line. The crosshair data are connected into a straight line. Observe whether the chord direction data is consistent with the hypotenuse data. If they are consistent, the axis is adjusted. After adjustment, the hypotenuse and crosshair axis vector are within 2mm.

[0050] The center line of the mold is marked with a 2m interval between every two crosshair points;

[0051] If the chord direction data of the straight line formed by connecting the crosshair data is inconsistent with the hypotenuse data of the frustum, repeat step (3) to adjust the height of the surface until they are consistent, and then adjust the axis.

[0052] Because the mold shape is irregular, before the posture is adjusted, the straight line formed by the crosshairs may sometimes contradict the situation shown by the hypotenuse of the frustum. In this case, the hypotenuse of the frustum shall prevail.

[0053] (5) Overall fitting: After the overall mold adjustment is completed, the mold is re-scanned to collect mold surface point data. The height difference between all points and the theoretical mold surface is calculated in SA software. At this time, the result only has deviations in local and individual positions. The mechanical mechanism connecting the fiberglass surface and the steel frame is adjusted up and down until all data meet the acceptance criteria.

Claims

1. A method for installing a wind turbine blade UD mold, characterized in that, Includes the following steps: (1) Horizontal adjustment of mold steel frame: First, the mold is horizontally adjusted. Using a level tube, the lower bottom of the mold steel frame is compared with the bottom, the lowest point is raised, and iron plates are placed in place. (2) Surface scanning: The mold surface point data is collected using a laser tracker. The mold surface collection and measurement range includes the bevel of the frustum, the cavity and the flange; The laser tracker acquisition density in step (2) is set as follows: the distance between acquisition points is set to 30~50mm; The acquisition method is as follows: using a target ball to guide the laser beam, the mold surface is scanned in a uniform serpentine pattern to obtain the required point data; (3) Adjustment of surface height: The point data collected in step (2) of the bevel, cavity and flange are calculated together in SA software to obtain the height difference between all points and the theoretical mold surface; the height difference obtained in the first calculation is often a regional deviation, and regional adjustment is made based on this result; (4) Axial adjustment: After the steel frame is adjusted, the laser tracker is used to re-collect and measure the hypotenuse of the frustum. At the same time, the laser tracker is used to take points on the crosshairs of the mold center line. The crosshair data are connected into a straight line. Observe whether the chord direction data is consistent with the hypotenuse data. If they are consistent, the axis is adjusted. After adjustment, the hypotenuse of the frustum and the crosshair axis vector are within 2mm. In step (4), the interval between every two crosshair markers on the mold centerline should be at least 1 to 3 meters. If the chord direction data of the straight line formed by connecting the crosshair data is inconsistent with the hypotenuse data of the frustum, repeat step (3) to adjust the height of the surface until they are consistent, and then adjust the axis. (5) Overall fitting: After the overall mold is adjusted, the mold is scanned again to collect the mold surface point data. The height difference between all points and the theoretical mold surface is calculated in SA software. At this time, the result only has deviations in local and individual positions. The mechanical mechanism connecting the fiberglass surface and the steel frame is adjusted up and down until all data meet the acceptance criteria.

2. The installation method of a wind turbine blade UD mold according to claim 1, characterized in that, The horizontal pipe spacing in step (1) is 8~10m.

3. The method for installing a wind turbine blade UD mold according to claim 1, characterized in that, The adjustment method described in step (3) is similar to that in step (1), that is, the low point steel frame is raised to the corresponding deviation data, and the iron sheet is shimmed, and the iron sheet under the high point steel frame is removed to the corresponding thickness.

4. The installation method of a wind turbine blade UD mold according to claim 1, characterized in that, In step (4), if the straight line formed by the crosshairs contradicts the state shown by the hypotenuse of the frustum before the posture is adjusted, the hypotenuse of the frustum shall prevail.

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