CN117346698A - Method and device for detecting parallelism and coaxiality of flanges of offshore wind power tower - Google Patents

Method and device for detecting parallelism and coaxiality of flanges of offshore wind power tower Download PDF

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Publication number
CN117346698A
CN117346698A CN202311501747.0A CN202311501747A CN117346698A CN 117346698 A CN117346698 A CN 117346698A CN 202311501747 A CN202311501747 A CN 202311501747A CN 117346698 A CN117346698 A CN 117346698A
Authority
CN
China
Prior art keywords
coaxiality
tower
flanges
parallelism
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311501747.0A
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Chinese (zh)
Inventor
符桂芳
徐朝阳
李毫
覃小莉
钟志锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Wenchuan Heavy Industry Co ltd
China State Shipbuilding Corp Ltd
Original Assignee
Guangzhou Wenchuan Heavy Industry Co ltd
China State Shipbuilding Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Wenchuan Heavy Industry Co ltd, China State Shipbuilding Corp Ltd filed Critical Guangzhou Wenchuan Heavy Industry Co ltd
Priority to CN202311501747.0A priority Critical patent/CN117346698A/en
Publication of CN117346698A publication Critical patent/CN117346698A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
    • G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

The invention relates to a method for detecting parallelism and coaxiality of a flange of an offshore wind power tower, which comprises the following steps: the tower tube is placed on the support frame, and four quadrant points on the inner sides of two flanges at two ends of the support frame are determined: four quadrant points of the two ends of A-0 degrees, B-90 degrees, C-180 degrees and D-270 degrees are respectively recorded as A1, A2, B1, B2, C1, C2, D1 and D2; measuring distances corresponding to four quadrant points of flanges at two ends of a tower barrel by using measuring equipment respectively: A1-A2, B1-B2, C1-C2, D1-D2, comparing the four data to determine parallelism between the two flanges; the length of four quadrant point diagonals of flanges at two ends of a tower barrel is measured by measuring equipment respectively: A1-C2, B1-D2, C1-A2, D1-B2, and comparing the four data to determine coaxiality between the two flanges. The invention also relates to a device for implementing the method, and the method and the device have the advantages of simple and convenient operation, high detection efficiency and high detection precision, can effectively avoid the waste of materials, and are beneficial to reducing the labor intensity of operators.

Description

Method and device for detecting parallelism and coaxiality of flanges of offshore wind power tower
Technical Field
The invention relates to the technical field of offshore wind power tower detection, in particular to a method and a device for detecting parallelism and coaxiality of flanges of offshore wind power towers.
Background
The marine wind power tower construction project belongs to the field of marine wind power, the requirement on precision measurement is higher, the parallelism and coaxiality of flanges on two end faces of a cylinder are required to be less than 3mm according to project technical specifications, the traditional detection method is to pull oblique line measurement data from theoretical center points of flanges on two end faces of the tower to flange quadrant points, two center supports are arranged at the centers of flanges on two end faces of the cylinder, and O is respectively arranged at the centers of flanges on two end faces of the cylinder 1 、O 2 The position is fixed, a central hole is found, equipment such as Kong Shuanshang steel tape or piano wire is required, the other end of the central hole is weighed and fastened on the steel tape by a spring, the same pulling force (about 5 kg-10 kg) is used for measuring and recording and measuring, and the length of the bevel edge from the central point O to the four quadrant points of the other end A '(0 degree), B' (90 degree), C '(180 degree) and D' (270 degree) of the cylinder body is recorded, and the relative difference is within 3 mm.
The traditional detection method has the defects of low efficiency, high operation difficulty, material waste, high labor intensity and the like, and the traditional detection method has the defects that the position of the central hole is difficult to determine in the process of making the central hole of the bracket, the workload is large, the position of the central hole is easy to deviate to cause measurement errors, the measurement accuracy is influenced, and the like.
Disclosure of Invention
Based on the above, it is necessary to provide a method and a device for detecting parallelism and coaxiality of a flange of an offshore wind power tower, which are simple and convenient to operate, high in detection efficiency and high in detection precision, and can effectively avoid waste of materials, and meanwhile, the labor intensity of operators is reduced.
The technical scheme is as follows:
on the one hand, a method and a device for detecting parallelism and coaxiality of flanges of offshore wind power towers are provided, and the method comprises the following steps:
the tower tube is placed on the support frame, and four quadrant points on the inner sides of two flanges at two ends of the support frame are determined: four quadrant points of the two ends of A-0 degrees, B-90 degrees, C-180 degrees and D-270 degrees are respectively recorded as A1, A2, B1, B2, C1, C2, D1 and D2;
parallelism detection: measuring distances corresponding to four quadrant points of flanges at two ends of a tower barrel by using measuring equipment respectively: A1-A2, B1-B2, C1-C2, D1-D2, comparing the four data to determine parallelism between the two flanges;
coaxiality detection: the length of four quadrant point diagonals of flanges at two ends of a tower barrel is measured by measuring equipment respectively: A1-C2, B1-D2, C1-A2, D1-B2, and comparing the four data to determine coaxiality between the two flanges.
The technical scheme is further described as follows:
in one embodiment, four quadrant points are located 25-50mm inboard of the flange from the inboard edge of the flange.
In one embodiment, four quadrant points are located 30mm inboard of the flange from the inboard edge of the flange.
In one embodiment, each time a measurement is made, the support frame is used to rotate the tower, and the quadrant points measured by the corresponding flanges on the tower are rotated to the lowest point of the horizontal height.
In one embodiment, in the coaxiality detection step, when the length data A1-C2, B1-D2, C1-A2 and D1-B2 of the diagonal lines of four quadrant points of the flanges at two ends of the tower barrel are measured, the tower barrel is rotated through the supporting frame, the quadrant points A1, A2, B1, B2, C1, C2, D1 and D2 on the flanges are respectively rotated to the lowest point of the horizontal height, eight data of the two groups A1-C2, B1-D2, C1-A2 and D1-B2 are measured, and the eight data are compared to determine the coaxiality between the two flanges.
In one embodiment, the parallelism detecting step may be performed before the coaxiality detecting step, or the coaxiality detecting step may be performed before the parallelism detecting step, or the parallelism detecting step and the coaxiality detecting step may be performed synchronously.
In one embodiment, the measuring device is a total station or a laser range finder.
On the other hand, the device for implementing the method for detecting the parallelism and the coaxiality of the flange of the offshore wind power tower cylinder comprises a supporting frame, wherein the supporting frame comprises a supporting table, a roller frame is arranged on the supporting table, the bottom of the supporting table is provided with the supporting frame, when the tower cylinder is detected, the tower cylinder is placed on the roller frame, and the roller frame is provided with a rolling wheel for driving the tower cylinder to rotate.
In one embodiment, the rolling wheel comprises a driving wheel and a driven wheel, and the driving wheel is connected with a driving motor for driving the driving wheel to rotate.
In one embodiment, the roller frame is further provided with an angle sensor connected with the rolling wheel to measure the rotation angle data of the rolling wheel.
The invention has the beneficial effects that:
compared with the prior art, the method and the device for detecting the parallelism and the coaxiality of the flange of the offshore wind turbine tower have the advantages that the operation of searching for the center hole is avoided, the operation convenience is improved, the operation efficiency is improved, compared with the fact that the position of the center hole in the traditional method is difficult to determine, errors caused by the center hole in detection are unavoidable, the errors of the part are reduced by reducing the operation, the detection data are more accurate, the operation is simpler and more convenient, and the labor intensity of operators can be reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a method for detecting parallelism and coaxiality of flanges of an offshore wind turbine tower in one embodiment;
FIG. 2 is an enlarged schematic view of the portion I of FIG. 1;
FIG. 3 is an enlarged schematic view of the portion II of FIG. 1;
FIG. 4 is a schematic view of the structure in the direction P in FIG. 1;
FIG. 5 is a schematic view of the structure in the direction K of FIG. 1;
fig. 6 is a schematic structural view of a support frame according to an embodiment.
Reference numerals illustrate:
100. a tower; 200. a flange; 300. quadrant points; 400. a support frame; 410. a support table; 420. a roller frame; 421. a rolling wheel; 430. a support frame; 431. a support base plate; 440. an angle sensor.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "upper", "lower", "horizontal", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "abutted," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 5, in one embodiment, a method for detecting parallelism and coaxiality of a flange of an offshore wind turbine tower is provided, which includes the following steps:
the tower 100 is placed on the support 400, and four quadrant points 300 inside the two flanges 200 at the two ends of the support 400 are determined: four quadrant points 300 at the two ends of A-0 degrees, B-90 degrees, C-180 degrees and D-270 degrees are respectively recorded as A1, A2, B1, B2, C1, C2, D1 and D2;
parallelism detection: the measuring equipment is adopted to respectively measure the distances corresponding to four quadrant points 300 of flanges 200 at the two ends of the tower 100: comparing the four data to determine the parallelism between the two flanges 200, wherein the relative difference between the maximum value and the minimum value is within 3mm, and is qualified or unqualified;
coaxiality detection: the length of the diagonal lines of four quadrant points 300 of the flanges 200 at the two ends of the tower 100 is respectively measured by using measuring equipment: A1-C2, B1-D2, C1-A2, D1-B2, comparing the four data to determine the coaxiality between the two flanges 200, and determining that the relative difference between the maximum value and the minimum value is within 3mm, or not.
In the embodiment, compared with the traditional detection method, the detection method for the parallelism and the coaxiality of the flange of the offshore wind turbine tower provided by the invention has the advantages that the operation of searching the center hole is avoided, the operation convenience is improved, the operation efficiency is improved, and compared with the situation that the position of the center hole in the traditional method is difficult to determine, the error brought by the center hole in the detection is unavoidable, the error of the part is reduced by reducing the operation, so that the detection data is more accurate, the operation is simpler and more convenient, and the labor intensity of operators can be reduced.
In one embodiment, four quadrant points 300 are located 25-50mm inboard of flange 200 from the inboard edge of flange 200. Specifically, the four quadrant points 300 are located at the inner side of the flange 200 at a distance of 30mm from the inner side edge of the flange 200, so as to further ensure the detection accuracy and reduce the influence of measurement errors caused by the deformation of the edge of the flange 200 as much as possible. Of course, in actual operation, the position of the quadrant points 300 is not limited to be set at the position 25-50mm away from the inner edge of the flange 200 inside the flange 200, so long as the detection accuracy can be further ensured, and the influence of measurement errors caused by deformation of the flange 200 can be reduced.
In one embodiment, during each measurement, the support 400 rotates the tower 100 to rotate the quadrant points 300 measured by the corresponding flanges 200 on the tower 100 to the lowest point of the horizontal height, so as to ensure that the flatness data is not affected by the gravity of the support 400, and improve the measurement accuracy.
Further, in the coaxiality detecting step, when the length data A1-C2, B1-D2, C1-A2, D1-B2 of the diagonal lines of the four quadrant points 300 of the flanges 200 at the two ends of the tower 100 are measured, the tower 100 is rotated by the support 400, the quadrant points 300A1, A2, B1, B2, C1, C2, D1, D2 on the flanges 200 are respectively rotated to the lowest point of the horizontal height, eight data of the two sets of A1-C2, B1-D2, C1-A2, D1-B2 are measured, and the eight data are compared to determine the coaxiality between the two flanges 200. By comparing eight data, the error of measurement can be further reduced, and the measurement accuracy is improved.
In one embodiment, during measurement, the parallelism detecting step may be performed first and then the coaxiality detecting step may be performed first, or the coaxiality detecting step may be performed first and then the parallelism detecting step may be performed, or the parallelism detecting step and the coaxiality detecting step may be performed synchronously, so that the sequence of detection and measurement may be selected according to the operation habit or the operation requirement of the operator.
In one embodiment, the measuring device is a total station or a laser range finder, and of course, other measuring devices may be used as long as the values corresponding to the four quadrant points 300 can be achieved, which all fall within the protection scope of the present invention.
As shown in fig. 6, on the other hand, the embodiment further provides a device for implementing the above method for detecting parallelism and coaxiality of flanges of an offshore wind turbine tower, which comprises a support frame 400, wherein the support frame 400 comprises a support table 410, a roller frame 420 is arranged on the support table 410, a support frame 430 is arranged at the bottom of the support table 410, and a support bottom plate 431 is further arranged at the bottom of the support frame 430 so as to keep the stability of the whole support frame 400. When the tower 100 is detected, the tower 100 is placed on the roller frame 420, and the roller frame 420 is provided with a rolling wheel 421 for driving the tower 100 to rotate. When testing is performed, the tower 100 is placed on the roller frame 420 of the support frame 400, and the rotation of the tower 100 is driven by the rolling wheel 421 on the roller frame 420, so that the corresponding quadrant points 300 can be conveniently rotated to the corresponding positions, and the measurement operation is convenient.
In one embodiment, the rolling wheel 421 includes a driving wheel and a driven wheel, and the driving wheel is connected to a driving motor (not shown) for driving the driving wheel to rotate, and the driving wheel is driven by the driving motor, so that the tower 100 can be easily rotated. In actual operation, the rolling wheel 421 on one side may be a driving wheel, the driven wheel on the other side may be used on both sides, and the driving wheel may be used on both sides, so long as the rotation of the tower 100 can be finally realized by driving the driving motor, and such a design falls within the protection scope of the present invention.
In one embodiment, the roller frame 420 is further provided with an angle sensor 440, such as an angle encoder, connected to the roller 421 to measure the rotation angle data of the roller 421, and the rotation angle data of the roller 421 can be obtained through the angle sensor 440, so that the rotation angle data of the tower 100 can be obtained according to the diameter ratio of the roller 421 to the tower 100, which is beneficial to assisting an operator in determining whether the positions of the four quadrant points 300 are accurate. Further, through the design of the angle sensor 440, the external control device is connected with the driving motor and the measuring device of the angle sensor 440 and the rolling wheel 421 respectively, when the angle sensor 440 recognizes that the tower 100 rotates 90 °, the driving motor is controlled to stop rotating, and the measuring device is controlled to start measuring the corresponding quadrant points 300, so that the possibility is provided for realizing automatic measurement subsequently, and the automatic and intelligent process for detecting the parallelism and coaxiality of the propelling tower 100 is facilitated.
The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. The method for detecting the parallelism and coaxiality of the flange of the offshore wind power tower is characterized by comprising the following steps of:
the tower (100) is placed on the support frame (400) in a standing mode, and four quadrant points (300) on the inner sides of two flanges (200) at two ends of the support frame (400) are determined: four quadrant points (300) at two ends of A-0 degrees, B-90 degrees, C-180 degrees and D-270 degrees are respectively recorded as A1, A2, B1, B2, C1, C2, D1 and D2;
parallelism detection: measuring the corresponding distances of four quadrant points (300) of flanges (200) at two ends of a tower (100) by using measuring equipment respectively: A1-A2, B1-B2, C1-C2, D1-D2, comparing the four data to determine parallelism between the two flanges (200);
coaxiality detection: measuring the length of the diagonal lines of four quadrant points (300) of flanges (200) at two ends of a tower drum (100) respectively by using measuring equipment: A1-C2, B1-D2, C1-A2, D1-B2, and comparing the four data to determine coaxiality between the two flanges (200).
2. The method for detecting the parallelism and the coaxiality of the flange of the offshore wind turbine tower according to claim 1, wherein four quadrant points (300) are located at the positions 25-50mm away from the inner side edge of the flange (200) on the inner side of the flange (200).
3. The method for detecting the parallelism and the coaxiality of the flange of the offshore wind turbine tower according to claim 2, wherein four quadrant points (300) are located at the position, which is 30mm away from the inner edge of the flange (200), of the inner side of the flange (200).
4. The method for detecting the parallelism and the coaxiality of the flanges of the offshore wind power tower according to claim 1, wherein each time of measurement, the support frame (400) rotates the tower (100) to rotate the quadrant point (300) measured by the corresponding flange (200) on the tower (100) to the lowest point of the horizontal height.
5. The method for detecting the parallelism and the coaxiality of the flange of the offshore wind turbine tower according to claim 1 or 4, wherein in the coaxiality detection step, when the length data A1-C2, B1-D2, C1-A2 and D1-B2 of the diagonals of four quadrant points (300) of the flanges (200) at the two ends of the coaxiality measurement tower (100) are processed, the support frame (400) rotates the tower (100), the quadrant points (300) A1, A2, B1, B2, C1, C2, D1 and D2 on the flanges (200) are respectively rotated to the lowest point of the horizontal height, eight data in total are detected, and eight data are compared to determine the coaxiality between the two flanges (200).
6. The method for detecting the parallelism and the coaxiality of the flange of the offshore wind turbine tower according to claim 1, wherein the parallelism detection step is performed before the coaxiality detection step, the coaxiality detection step is performed before the coaxiality detection step is performed, or the parallelism detection step and the coaxiality detection step are performed synchronously.
7. The method for detecting the parallelism and the coaxiality of the flange of the offshore wind turbine tower according to claim 1, wherein the measuring equipment is a total station or a laser range finder.
8. A device for implementing the method for detecting the parallelism and coaxiality of the flange of the offshore wind power tower according to any one of claims 1 to 7, which is characterized by comprising a support frame (400), wherein the support frame (400) comprises a support table (410), a roller frame (420) is arranged on the support table (410), a support frame (430) is arranged at the bottom of the support table (410), the tower (100) is placed on the roller frame (420) when the tower (100) is detected, and a rolling wheel (421) for driving the tower (100) to rotate is arranged on the roller frame (420).
9. A device according to claim 8, characterized in that the rolling wheel (421) comprises a driving wheel and a driven wheel, the driving wheel being connected with a driving motor for driving the driving wheel in rotation.
10. An apparatus according to claim 8, wherein the roller frame (420) is further provided with an angle sensor (440) connected to the roller (421) for measuring rotational angle data of the roller (421).
CN202311501747.0A 2023-11-13 2023-11-13 Method and device for detecting parallelism and coaxiality of flanges of offshore wind power tower Pending CN117346698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311501747.0A CN117346698A (en) 2023-11-13 2023-11-13 Method and device for detecting parallelism and coaxiality of flanges of offshore wind power tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311501747.0A CN117346698A (en) 2023-11-13 2023-11-13 Method and device for detecting parallelism and coaxiality of flanges of offshore wind power tower

Publications (1)

Publication Number Publication Date
CN117346698A true CN117346698A (en) 2024-01-05

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ID=89357593

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311501747.0A Pending CN117346698A (en) 2023-11-13 2023-11-13 Method and device for detecting parallelism and coaxiality of flanges of offshore wind power tower

Country Status (1)

Country Link
CN (1) CN117346698A (en)

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