CN113449394A - Construction method for dismantling overhead gas pipeline - Google Patents
Construction method for dismantling overhead gas pipeline Download PDFInfo
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- CN113449394A CN113449394A CN202110717224.4A CN202110717224A CN113449394A CN 113449394 A CN113449394 A CN 113449394A CN 202110717224 A CN202110717224 A CN 202110717224A CN 113449394 A CN113449394 A CN 113449394A
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- 238000010276 construction Methods 0.000 title claims abstract description 67
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 230000003190 augmentative effect Effects 0.000 claims abstract description 11
- 230000003416 augmentation Effects 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 238000011835 investigation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000004364 calculation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/005—Machines, apparatus, or equipment specially adapted for cutting curved workpieces, e.g. tubes
- B23K7/006—Machines, apparatus, or equipment specially adapted for cutting curved workpieces, e.g. tubes for tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/008—Preliminary treatment
-
- 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
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
- G06T7/85—Stereo camera calibration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/56—Reuse, recycling or recovery technologies of vehicles
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- Engineering & Computer Science (AREA)
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- Theoretical Computer Science (AREA)
- Geometry (AREA)
- Computer Graphics (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Mechanical Engineering (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
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- Computer Vision & Pattern Recognition (AREA)
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Abstract
The invention discloses a construction method for dismantling an overhead gas pipeline, which comprises a first step and a modeling step; step two, calculating and analyzing, and importing a theoretical value stage; establishing a correlation stage between a theory and a construction site; step four, a calibration stage of a construction site; and step five, a cutting operation stage. According to the invention, the overhead gas pipeline in the disassembly area is formed into the real augmented three-dimensional model and placed in the real augmented mobile terminal, so that the disassembly point can be quickly and reasonably determined before disassembly, compared with the mode of disassembly in field investigation, the disassembly mode is quicker, the working efficiency is greatly improved, and meanwhile, whether a support platform is required to be built at the cutting point can also be determined, and the consumption of the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of gas pipeline dismounting, in particular to a construction method for dismounting an air-fuel pipeline.
Background
With the rapid development of industrialization, the backward capacity needs to be disassembled and moved step by step, and the existing large-scale industrial area is generally distributed over an overhead gas pipeline. In the demolition work, the demolition work of the overhead pipeline is very important.
For the dismounting operation of the overhead gas pipeline, the optimal dismounting cutting point needs to be calculated and selected. The selection of the dismantling cutting point needs to comprehensively consider various factors such as cutting efficiency, construction safety, operation convenience and the like.
In the prior art, the calculation of the demolition cutting point is basically calculated according to an early construction drawing of the overhead gas pipeline to be demolished. The early construction drawings are generally deviated from the current construction sites. One of the deviations is that the construction is not completely carried out according to the construction drawing in the same year, and the correction drawing is not returned after the construction, so that the archived early construction drawing is not completely consistent with the construction completion state. The second deviation is the time history, and the construction site has been developed and evolved for many years, and various facilities, butt straps, bridge abutments and the like have been added and removed, so that the archived early construction drawing is not completely consistent with the state of the construction site.
Therefore, the requirements of optimal cutting efficiency, construction safety, operation convenience and the like cannot be met by calculating and selecting the demolition cutting point based on the early construction drawing.
The person skilled in the art is dedicated to solving the above technical drawbacks.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, a technical object of the present invention is to solve the problems mentioned in the above-mentioned background art.
In order to realize the technical purpose, the invention provides a construction method for dismantling an overhead gas pipeline, which comprises the following steps:
step one, modeling stage
Scanning an environment real scene of an overhead gas pipeline to be dismantled by an unmanned aerial vehicle to generate three-dimensional model data;
measuring the wall thickness of an overhead gas pipeline to be dismantled to obtain wall thickness data, and checking the leakage condition of the pipeline to form leakage point information;
respectively importing the three-dimensional model data, the wall thickness data and the leakage point information into a background terminal, and forming an initial three-dimensional model at the background terminal;
calling an early construction drawing of an overhead gas pipeline to be dismantled;
comparing the initial version three-dimensional model with the early construction drawing, and correcting the position with error of information to form a perfect version three-dimensional model;
selecting at least 3 reference points in the perfected three-dimensional model;
step two, calculating and analyzing, and importing theoretical value stage
Analyzing the perfect three-dimensional model, calculating and determining a theoretical disassembly point, and calculating a theoretical supporting platform and a theoretical construction platform required by the disassembly and cutting operation;
respectively importing the data of the perfected three-dimensional model with at least 3 reference points, the theoretical disassembly point, the theoretical supporting platform and the theoretical construction platform into a reality augmentation mobile terminal provided with reality augmentation software to form a reality augmentation three-dimensional model;
step three, establishing association stage of theory and construction site
Debugging and calibrating the reality augmented version three-dimensional model on a construction site, and establishing a correlation between the reality augmented version three-dimensional model and an actual environment of the construction site to form a calibration version reality augmented three-dimensional model;
step four, calibration stage of construction site
An operator operates the calibration version reality augmentation three-dimensional model in the reality augmentation mobile terminal, scans the surrounding environment of the overhead gas pipeline to be dismantled, finds the positions of a theoretical detaching point, a theoretical supporting platform and a theoretical construction platform in the calibration version reality augmentation three-dimensional model on a construction site, and marks the corresponding positions on the ground of the construction site;
an operator builds and installs an actual supporting platform and an actual construction platform according to the marks, and determines the position of an actual disassembly point;
step five, cutting operation stage
And taking an actual disassembly point on the overhead gas pipeline to be disassembled as a datum line, detecting the weakest positions on two sides of the datum line through detection equipment, and cutting the overhead gas pipeline to be disassembled.
Further, still include: step six, hoisting and clearing stage
Hoisting the cut overhead gas pipeline to a transport vehicle for transportation and leaving by external hoisting equipment;
and (5) detaching the mounting frame of the original gas pipeline.
The invention has the beneficial effects that:
due to the construction method, a perfect three-dimensional model is formed before the disassembly operation, the calculation values such as the theoretical disassembly point and the like are determined quickly and reasonably, and compared with the prior art, the method based on the early construction drawing estimation or on-site investigation calculation is quicker and more efficient.
Furthermore, the method adopts a reality augmentation technology to mark theoretical values such as theoretical detaching points and the like in the three-dimensional model of the reality augmentation version to form the three-dimensional model of the reality augmentation version, thereby greatly facilitating operators to calibrate the actual operation position in the field environment, greatly improving the working efficiency, and improving the safety and the operation convenience of the demolition construction.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described below to fully understand the objects, the features and the effects of the present invention.
Example 1
Step one, modeling stage
Scanning an environment real scene of an overhead gas pipeline to be dismantled by an unmanned aerial vehicle to generate three-dimensional model data;
measuring the wall thickness of an overhead gas pipeline to be dismantled to obtain wall thickness data, and checking the leakage condition of the pipeline to form leakage point information;
respectively importing the three-dimensional model data, the wall thickness data and the leakage point information into a background terminal, and forming an initial three-dimensional model at the background terminal;
calling an early construction drawing of an overhead gas pipeline to be dismantled;
comparing the initial version three-dimensional model with the early construction drawing, and correcting the position with error of position information to form a perfect version three-dimensional model;
selecting at least 3 reference points in the perfected three-dimensional model;
in different embodiments, the background terminal may be one of a mobile phone, a tablet, and a computer.
Step two, calculating and analyzing, and importing theoretical value stage
Analyzing the perfect three-dimensional model, calculating and determining a theoretical disassembly point by combining the factors such as the wall thickness of the pipeline, the leakage point, the bearing capacity of a pipeline bracket, the field environment, the property of the attachments on the inner wall of the pipeline, the model of hoisting equipment and the like, and calculating a theoretical support platform and a theoretical construction platform required by the disassembly and cutting operation;
respectively importing the data of the perfected three-dimensional model with at least 3 reference points, the theoretical disassembly point, the theoretical supporting platform and the theoretical construction platform into a reality augmentation mobile terminal provided with reality augmentation software to form a reality augmentation three-dimensional model;
in different embodiments, the reality augmentation mobile terminal is one of a mobile phone, a tablet, a computer, and VR glasses with a reality augmentation software system installed therein.
The reality augmentation software system is a prior art, and when the existing reality augmentation software system is applied, a person skilled in the art only needs to set software to call related data and information related in the foregoing of the patent.
In different embodiments, after the frame is positioned, the aging degree of the frame, the connecting structure and the position of the gas pipeline placed on the frame can be analyzed, so that the supporting force of the frame on the gas pipeline can be determined.
Step three, establishing association stage of theory and construction site
And debugging and calibrating the reality augmented version three-dimensional model on a construction site, and establishing a correlation between the reality augmented version three-dimensional model and the actual environment of the construction site to form a calibration version reality augmented three-dimensional model.
Step four, calibration stage of construction site
An operator operates the calibration version reality augmentation three-dimensional model in the reality augmentation mobile terminal, scans the surrounding environment of the overhead gas pipeline to be dismantled, finds the positions of a theoretical detaching point, a theoretical supporting platform and a theoretical construction platform in the calibration version reality augmentation three-dimensional model on a construction site, and marks the corresponding positions on the ground of the construction site;
and (4) according to the marks, an operator builds and installs an actual supporting platform and an actual construction platform, and determines the position of an actual disassembly point.
In different embodiments, the theoretical supporting platform and the theoretical construction platform can be arranged separately or together.
Step five, cutting operation stage
The actual disassembly point on the overhead gas pipeline to be disassembled is used as a datum line, the weakest positions of 5-10 cm on two sides of the datum line are detected through detection equipment, and the overhead gas pipeline to be disassembled is cut.
The weakest point on the two sides of the datum line can be adjusted adaptively according to specific cases.
And step five, adopting gas cutting for cutting. Of course, other common cutting means may be adopted according to the construction conditions.
Step six, hoisting and clearing stage
Hoisting the cut overhead gas pipeline to a transport vehicle for transportation and leaving by external hoisting equipment;
and (5) detaching the mounting frame of the original gas pipeline.
In different embodiments, the hoisting device can be machined to a height of 80 m.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The construction method for dismantling the overhead gas pipeline comprises the following steps:
step one, modeling stage
Scanning an environment real scene of an overhead gas pipeline to be dismantled by an unmanned aerial vehicle to generate three-dimensional model data;
measuring the wall thickness of an overhead gas pipeline to be dismantled to obtain wall thickness data, and checking the leakage condition of the pipeline to form leakage point information;
respectively importing the three-dimensional model data, the wall thickness data and the leakage point information into a background terminal, and forming an initial three-dimensional model at the background terminal;
calling an early construction drawing of an overhead gas pipeline to be dismantled;
comparing the initial version three-dimensional model with the early construction drawing, and correcting the position with error of information to form a perfect version three-dimensional model;
selecting at least 3 reference points in the perfected three-dimensional model;
step two, calculating and analyzing, and importing theoretical value stage
Analyzing the perfect three-dimensional model, calculating and determining a theoretical disassembly point, and calculating a theoretical supporting platform and a theoretical construction platform required by the disassembly and cutting operation;
respectively importing the data of the perfected three-dimensional model with at least 3 reference points, the theoretical disassembly point, the theoretical supporting platform and the theoretical construction platform into a reality augmentation mobile terminal provided with reality augmentation software to form a reality augmentation three-dimensional model;
step three, establishing association stage of theory and construction site
Debugging and calibrating the reality augmented version three-dimensional model on a construction site, and establishing a correlation between the reality augmented version three-dimensional model and an actual environment of the construction site to form a calibration version reality augmented three-dimensional model;
step four, calibration stage of construction site
An operator operates the calibration version reality augmentation three-dimensional model in the reality augmentation mobile terminal, scans the surrounding environment of the overhead gas pipeline to be dismantled, finds the positions of a theoretical detaching point, a theoretical supporting platform and a theoretical construction platform in the calibration version reality augmentation three-dimensional model on a construction site, and marks the corresponding positions on the ground of the construction site;
an operator builds and installs an actual supporting platform and an actual construction platform according to the marks, and determines the position of an actual disassembly point;
step five, cutting operation stage
And taking an actual disassembly point on the overhead gas pipeline to be disassembled as a datum line, detecting the weakest positions on two sides of the datum line through detection equipment, and cutting the overhead gas pipeline to be disassembled.
2. The construction method for dismantling the overhead gas pipeline according to claim 1, wherein: further comprising: step six, hoisting and clearing stage
Hoisting the cut overhead gas pipeline to a transport vehicle for transportation and leaving by external hoisting equipment;
and (5) detaching the mounting frame of the original gas pipeline.
3. The construction method for dismantling the overhead gas pipeline according to claim 1, wherein: the reality augmentation mobile terminal is one of a mobile phone, a tablet, a computer and VR glasses provided with a reality augmentation software system.
4. The construction method for dismantling the overhead gas pipeline according to claim 1, wherein: the background terminal is one of a mobile phone, a tablet and a computer.
5. The construction method for dismantling the overhead gas pipeline according to claim 1, wherein: and in the fifth step, the cutting mode adopts gas cutting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717224.4A CN113449394B (en) | 2021-06-28 | 2021-06-28 | Construction method for dismantling overhead gas pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110717224.4A CN113449394B (en) | 2021-06-28 | 2021-06-28 | Construction method for dismantling overhead gas pipeline |
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| CN113449394A true CN113449394A (en) | 2021-09-28 |
| CN113449394B CN113449394B (en) | 2024-02-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845663A (en) * | 2018-04-08 | 2018-11-20 | 中国航空规划设计研究总院有限公司 | Design and construction system |
| CN108957507A (en) * | 2017-11-09 | 2018-12-07 | 北京市燃气集团有限责任公司 | Fuel gas pipeline leakage method of disposal based on augmented reality |
| CN110990983A (en) * | 2019-12-05 | 2020-04-10 | 中建长远建设有限公司 | Water supply pipeline cross arrangement method |
| KR20200067275A (en) * | 2018-12-03 | 2020-06-12 | 한국가스안전공사 | Piping inspection and repair system using drone and MR technology |
| CN111639408A (en) * | 2020-05-27 | 2020-09-08 | 上海实迅网络科技有限公司 | AR technology-based urban pipe network pipeline 3D model display method and system |
| EP3748583A1 (en) * | 2019-06-04 | 2020-12-09 | My Virtual Reality Software AS | Subsurface utility visualization |
-
2021
- 2021-06-28 CN CN202110717224.4A patent/CN113449394B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957507A (en) * | 2017-11-09 | 2018-12-07 | 北京市燃气集团有限责任公司 | Fuel gas pipeline leakage method of disposal based on augmented reality |
| CN108845663A (en) * | 2018-04-08 | 2018-11-20 | 中国航空规划设计研究总院有限公司 | Design and construction system |
| KR20200067275A (en) * | 2018-12-03 | 2020-06-12 | 한국가스안전공사 | Piping inspection and repair system using drone and MR technology |
| EP3748583A1 (en) * | 2019-06-04 | 2020-12-09 | My Virtual Reality Software AS | Subsurface utility visualization |
| CN110990983A (en) * | 2019-12-05 | 2020-04-10 | 中建长远建设有限公司 | Water supply pipeline cross arrangement method |
| CN111639408A (en) * | 2020-05-27 | 2020-09-08 | 上海实迅网络科技有限公司 | AR technology-based urban pipe network pipeline 3D model display method and system |
Non-Patent Citations (3)
| Title |
|---|
| YU.N.LOBACH ET AL.: "Dismantling design for a reference research reactor of the WWR type", 《NUCLEAR ENGINEERING AND DESIGN》, vol. 266, pages 155 - 165 * |
| 曾小凤 等: "基于3D建模和增强现实的建筑管道设计与实现", 《电子制作》, no. 18 * |
| 林海 等: "基于BIM平台的AR技术在机电安装工程施工管理中的应用", 《科技风》, no. 4 * |
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