CN113609605B - Method for assisting in gold mouth pairing of long-distance pipeline through three-dimensional modeling - Google Patents
Method for assisting in gold mouth pairing of long-distance pipeline through three-dimensional modeling Download PDFInfo
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- CN113609605B CN113609605B CN202110806452.9A CN202110806452A CN113609605B CN 113609605 B CN113609605 B CN 113609605B CN 202110806452 A CN202110806452 A CN 202110806452A CN 113609605 B CN113609605 B CN 113609605B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses a method for assisting a gold mouth group pair of a transmission pipeline through three-dimensional modeling, which comprises the following steps: (1) 3D real object scanning of a pipeline to be connected; (2) 3D modeling to generate a short joint to be welded; (3) constructing a reference surface in the middle of the generated short joint to be welded; (4) Measuring the distance between the reference surface and the corresponding point positions of the pipelines at the two sides; (5) Setting out the measured value on the pipe material/inputting the measured value into a numerical control cutting machine; and (6) cutting and blanking by a manual cutting/numerical control cutting machine. According to the method for assisting in the pairing of the gold mouths of the transmission pipelines through three-dimensional modeling, the 3D scanning technology is combined with the modeling technology, so that the accuracy and precision of data are improved, and the construction efficiency is improved; meanwhile, the invention can accurately judge whether the deviation angle of the axis of the pipe section to be connected exceeds the allowable range before the blanking is performed, and the blanking size is accurately calculated by a computer, so that the dependence on the technology and experience of operators is reduced, and the intellectualization and informatization of the blanking are realized.
Description
Technical Field
The invention relates to the technical field of long-distance pipeline metal mouth group pairs, in particular to a method for assisting the long-distance pipeline metal mouth group pairs through three-dimensional modeling.
Background
In the construction or maintenance process of long-distance pipeline, the metal mouth group of the pipeline is an indispensable link, namely: two sections of tubing are connected together. Before the closed connection is implemented, the steel pipe is cut off according to the length of the short section which is actually required. Due to the influences of welding deformation and various factors, the axes of the joint of two sections of pipelines to be connected are not coincident, but are staggered to different degrees along the circumferential direction, so that a cutting machine is required to cut off the steel pipe and process a groove, and simultaneously, the steel pipe is subjected to oblique cutting processing so as to compensate the staggered deviation of the joint.
At present, the gold mouth group pairing method in the prior art is a short section drawing line blanking method, the method does not have professional construction machinery or automatic technical flow, the size needs to be measured manually, the unfolding height value of the intersecting line is calculated according to a mathematical formula, and then the drawing line is lofted. When a worker draws lines, the X-axis coordinate and the Y-axis coordinate are usually drawn on the wide felt paper by using a ruler, wherein the X-axis is the unfolding length of the outer wall of the pipeline, and the Y-axis is the unfolding height value of the intersecting line. When the worker performs the operation, the worker generally only takes eight points, connects the points, and cuts out the sample plate by scissors. After the sample plate is manufactured, paving the felt sample plate on a pipeline to be cut, enabling the sample plate to be attached to the outer wall of the pipe as much as possible, painting white lines with stone strokes, and then intermittently cutting along the line or along the point by a hand-held cutting gun.
The manual line drawing blanking is extremely easy to cause error accumulation, so that the welding ports of the gold port assembly are positioned at different horizontal angles, different horizontal longitudinal angles or various overlapping angles, and welding is difficult or no welding point is caused. The method is very dependent on the technical level and experience of plumbers, and the field blanking time is long, so that the speed of rush repair and maintenance is influenced.
Disclosure of Invention
The invention aims to provide a method for assisting in growing the metal mouth assembly of a pipeline through three-dimensional modeling, which can realize high-precision, high-efficiency and programmed metal mouth assembly without depending on the technology and experience of operators.
The technical scheme adopted by the invention is as follows: a method for assisting in growing a pipeline gold mouth group pair through three-dimensional modeling, comprising the following steps:
(1) Using 3D scanning equipment and software to scan and model the end surfaces of the pipelines to be assembled to obtain circular surfaces D1 and D2;
(2) Connecting circle centers O1 and O2 of the circular surfaces D1 and D2 through modeling software to obtain a line segment O1O2, wherein a straight line where the line segment 0102 is positioned is the axis of the short joint to be assembled;
(3) Taking a midpoint O3 of a line segment O1O2, and taking a plane M perpendicular to the line segment O1O2 through the midpoint O3, wherein the plane M is a measurement reference plane; on a measurement reference plane M, drawing a circle D3 by taking O3 as a circle center and the outer diameter of the pup joint as a diameter;
(4) Taking the highest point of three circles D1, D2 and D3 in the vertical direction as a 12-point direction, and taking the furthest point of the three circles in the 3-point direction as D13, D23 and D33; taking the furthest points of the 6-point directions of the three circles as D16, D26 and D36; taking the most distal points of the 9-point directions of the three circles as D19, D29 and D39; taking the furthest points of the 12-point directions of the three circles as D112, D212 and D312; the D13, D23, D33, D16, D26, D36, D19, D29, D39, D112, D212 and D312 are measurement datum points;
(5) Connecting the measurement datum points, and measuring line segments D13D23, D23D33, D16D26, D26D36, D19D29, D29D39, D112D212 and D212D312 to generate 8 length data;
(6) And lofting the measured 8 length data to a pipe section to be blanked, and cutting by a numerical control cutting machine.
Further, in the step (4), the most distal points on the three circles D1, D2 and D3 are taken as measurement reference points.
Further, in the step (4), the most distal points on the three circles D1, D2 and D3 are taken as measurement reference points.
Further, in the step (4), the most distal points of the three circles D1, D2 and D3 in twelve arbitrary directions are taken as measurement reference points.
Further, the 3D scanning device is a handheld three-dimensional laser scanner.
According to the method for assisting in the pairing of the gold mouths of the transmission pipelines through three-dimensional modeling, the 3D scanning technology is combined with the modeling technology, so that the accuracy and precision of data are improved, and the construction efficiency is improved; meanwhile, the invention can accurately judge whether the deviation angle of the axis of the pipe section to be connected exceeds the allowable range before the blanking is performed, and the blanking size is accurately calculated by a computer, so that the dependence on the technology and experience of operators is reduced, and the intellectualization and informatization of the blanking are realized.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a method for assisting a gold mouth group pair of a long transmission pipeline through three-dimensional modeling comprises the following steps:
(1) Using 3D scanning equipment and software to scan and model the end surfaces of the pipelines to be assembled to obtain circular surfaces D1 and D2;
(2) Connecting circle centers O1 and O2 of the circular surfaces D1 and D2 through modeling software to obtain a line segment O1O2, wherein a straight line where the line segment 0102 is positioned is the axis of the short joint to be assembled;
(3) Taking a midpoint O3 of a line segment O1O2, and taking a plane M perpendicular to the line segment O1O2 through the midpoint O3, wherein the plane M is a measurement reference plane; on a measurement reference plane M, drawing a circle D3 by taking O3 as a circle center and the outer diameter of the pup joint as a diameter;
(4) Taking the highest point of three circles D1, D2 and D3 in the vertical direction as a 12-point direction, and taking the furthest point of the three circles in the 3-point direction as D13, D23 and D33; taking the furthest points of the 6-point directions of the three circles as D16, D26 and D36; taking the most distal points of the 9-point directions of the three circles as D19, D29 and D39; taking the furthest points of the 12-point directions of the three circles as D112, D212 and D312; the D13, D23, D33, D16, D26, D36, D19, D29, D39, D112, D212 and D312 are measurement datum points;
(5) Connecting the measurement datum points, and measuring line segments D13D23, D23D33, D16D26, D26D36, D19D29, D29D39, D112D212 and D212D312 to generate 8 length data;
(6) And lofting the measured 8 length data to a pipe section to be blanked, and cutting by a numerical control cutting machine.
Claims (5)
1. A method for assisting in growing a pipeline gold mouth group pair through three-dimensional modeling, which is characterized by comprising the following steps:
(1) Using 3D scanning equipment and software to scan and model the end surfaces of the pipelines to be assembled to obtain circular surfaces D1 and D2;
(2) Connecting circle centers O1 and O2 of the circular surfaces D1 and D2 through modeling software to obtain a line segment O1O2, wherein a straight line where the line segment 0102 is positioned is the axis of the short joint to be assembled;
(3) Taking a midpoint O3 of a line segment O1O2, and taking a plane M perpendicular to the line segment O1O2 through the midpoint O3, wherein the plane M is a measurement reference plane; on a measurement reference plane M, drawing a circle D3 by taking O3 as a circle center and the outer diameter of the pup joint as a diameter;
(4) Taking the highest point of three circles D1, D2 and D3 in the vertical direction as a 12-point direction, and taking the furthest point of the three circles in the 3-point direction as D13, D23 and D33; taking the furthest points of the 6-point directions of the three circles as D16, D26 and D36; taking the most distal points of the 9-point directions of the three circles as D19, D29 and D39; taking the furthest points of the 12-point directions of the three circles as D112, D212 and D312; the D13, D23, D33, D16, D26, D36, D19, D29, D39, D112, D212 and D312 are measurement datum points;
(5) Connecting the measurement datum points, and measuring line segments D13D23, D23D33, D16D26, D26D36, D19D29, D29D39, D112D212 and D212D312 to generate 8 length data;
(6) And lofting the measured 8 length data to a pipe section to be blanked, and cutting by a numerical control cutting machine.
2. The method of claim 1, wherein in the step (4), the most distal points on three circles of D1, D2, and D3 are taken as measurement reference points.
3. The method of claim 2, wherein in the step (4), the most distal points in the three circles D1, D2, and D3 are taken as measurement reference points.
4. A method for assisting in growing a metal mouth group pair of a pipeline by three-dimensional modeling according to claim 3, wherein in the step (4), the far-end points of twelve circles in any direction of D1, D2 and D3 are taken as measurement reference points.
5. A method of assisting in growing a pipeline gold mouth pairing by three-dimensional modeling according to any of claims 1-4 characterised in that the 3D scanning device is a hand-held three-dimensional laser scanner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110806452.9A CN113609605B (en) | 2021-07-16 | 2021-07-16 | Method for assisting in gold mouth pairing of long-distance pipeline through three-dimensional modeling |
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| CN202110806452.9A CN113609605B (en) | 2021-07-16 | 2021-07-16 | Method for assisting in gold mouth pairing of long-distance pipeline through three-dimensional modeling |
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| CN113609605A CN113609605A (en) | 2021-11-05 |
| CN113609605B true CN113609605B (en) | 2023-08-18 |
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| CN114459321B (en) * | 2021-12-15 | 2024-04-12 | 辐基斯（青岛）复合材料管道有限公司 | Spatial dislocation isodiametric pipeline connection method based on deflection angle and offset measurement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413348A (en) * | 2008-11-28 | 2009-04-22 | 中冶京唐建设有限公司 | Steel structure three-dimensional scanning observe and control method |
| CN109388870A (en) * | 2018-09-25 | 2019-02-26 | 中国石油天然气集团公司 | A kind of oil-gas pipeline strength group does not backfill the calculation method of length to minimum |
| KR102076349B1 (en) * | 2019-10-11 | 2020-02-11 | 허강수 | Angle Valve changeable angle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413348A (en) * | 2008-11-28 | 2009-04-22 | 中冶京唐建设有限公司 | Steel structure three-dimensional scanning observe and control method |
| CN109388870A (en) * | 2018-09-25 | 2019-02-26 | 中国石油天然气集团公司 | A kind of oil-gas pipeline strength group does not backfill the calculation method of length to minimum |
| KR102076349B1 (en) * | 2019-10-11 | 2020-02-11 | 허강수 | Angle Valve changeable angle |
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