CN112944107A - Online visual internal detection device and method for gas transmission pipeline - Google Patents
Online visual internal detection device and method for gas transmission pipeline Download PDFInfo
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- CN112944107A CN112944107A CN202110371356.6A CN202110371356A CN112944107A CN 112944107 A CN112944107 A CN 112944107A CN 202110371356 A CN202110371356 A CN 202110371356A CN 112944107 A CN112944107 A CN 112944107A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/40—Constructional aspects of the body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to an online visual internal detection device and method for a gas transmission pipeline, which comprises a shell consisting of a side front shell, a side rear shell and a side shell, wherein the front part of the side shell is provided with the side front shell, and the rear part of the side shell is provided with the side rear shell; the end part of the shell positioned at the front side is provided with a head high-pressure-resistant integrated block, and the end part of the shell positioned at the rear side is provided with a tail high-pressure-resistant integrated block; four supporting legs are arranged at intervals in the circumferential direction in the middle of the side shell, and an auxiliary mileage wheel is arranged at the end of each supporting leg; the front end of the side surface shell is circumferentially and uniformly provided with a plurality of side front high-pressure resistant integrated blocks, and the rear end of the side surface shell is circumferentially and uniformly provided with a plurality of side rear high-pressure resistant integrated blocks. The invention is connected to the conventional in-pipeline detector or the geometric detector, can completely and intuitively reflect the detection result of the conventional in-pipeline detector or the geometric detector, and increases the effective information amount and function of the detection of the conventional in-pipeline detector or the geometric detector.
Description
Technical Field
The invention relates to an online visual internal detection device and method for a gas transmission pipeline, which are used for the technical fields of operation safety of a natural gas transmission pipeline and a natural gas pipeline network and internal detection of the pipeline.
Background
The detection in the gas transmission pipeline is the most direct, reliable and effective technical means for carrying out physical examination, defect finding and positioning, body aging evaluation and effective service evaluation on the gas transmission pipeline network in recent years, but the defects of complex operation conditions of the pipeline and various types of defects of the pipeline body exist, the analysis and identification algorithm of detection data is complex, the output result is not visual, the defect positioning lacks physical reference and the like.
In addition, a pipeline video inspection crawler (CCTV) technology is developed earlier, and is connected through a cable or a cable in a normal-pressure pipeline, so that illumination, photographing and shooting are performed inside the off-line pipeline, and after the illumination, photographing and shooting are performed, the off-line pipeline is recycled through the cable or the cable, so that the crawling distance is usually short, and the longest crawling distance can reach hundreds of meters. The pipeline video detection crawler is usually used for municipal pipelines (sewage, drainage and the like), is also used for non-pressurized open oil and gas pipelines, is used for short-distance detection and identification of the near end of the pipeline, and cannot be used in long-distance in-service pressurized gas pipelines.
The existing gas pipeline internal detection technology has the defects of complex detection data analysis and recognition algorithm, non-visual output result, lack of physical reference for defect positioning and the like, and the development of the early pipeline video detection crawler (CCTV) technology needs to connect cables or cables outside a pipeline, can only be used for the detection and recognition of the near-mouth end of a non-pressurized open oil and gas pipeline in short distance and cannot be used in a long-distance in-service pressurized gas pipeline.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an online visualized internal detection device and method for a gas transmission pipeline, which is connected to a conventional pipeline internal detector or a geometric detector, and can completely reflect visualized information of a detection result of the conventional pipeline internal detector or the geometric detector, thereby increasing effective information amount and function of the conventional pipeline internal detector or the geometric detector.
In order to achieve the purpose, the invention adopts the following technical scheme: an online visual internal detection device of a gas transmission pipeline comprises a shell consisting of a side front shell, a side rear shell and a side shell, wherein the side front shell is arranged at the front part of the side shell, and the side rear shell is arranged at the rear part of the side shell; the end part of the shell positioned at the front side is provided with a head high-pressure-resistant integrated block, and the end part of the shell positioned at the rear side is provided with a tail high-pressure-resistant integrated block; four supporting legs are arranged at the middle part of the side surface shell at intervals in the circumferential direction, and an auxiliary mileage wheel is arranged at the end part of each supporting leg; the front end of the side surface shell is circumferentially and uniformly provided with a plurality of side front high-pressure resistant integrated blocks, and the rear end of the side surface shell is circumferentially and uniformly provided with a plurality of side rear high-pressure resistant integrated blocks.
Further, a flexible external connecting pipe is arranged inside the shell, and the end part of the flexible external connecting pipe penetrates through the tail high-pressure-resistant integrated block and is connected with a detector or a geometric detector in a conventional pipeline.
Furthermore, a connecting cable and a connecting data wire are arranged in the flexible external connecting pipe; the head high-voltage-resistant integrated block, the tail high-voltage-resistant integrated block, the side front high-voltage-resistant integrated block and the side rear high-voltage-resistant integrated block are connected with a battery unit of the conventional in-pipeline detector or the geometric detector through the connecting cables, and are connected with a data reading and writing unit and a logic control unit of the conventional in-pipeline detector or the geometric detector through the connecting data lines.
Further, the head high-voltage-resistant integrated module, the tail high-voltage-resistant integrated module, the side front high-voltage-resistant integrated module and the side rear high-voltage-resistant integrated module are integrated by a high-definition camera and an LED lamp.
Further, the head high-voltage resistant integrated module is used for shooting a video of a front distant view in the advancing process; the side front high-pressure-resistant integrated module and the side rear high-pressure-resistant integrated module are used for carrying out close-range video shooting on the inner wall environment of the pipeline where the online visual internal detection device is located; the tail high-pressure-resistant integrated module is used for carrying out video shooting on the real-scene state of the rear end of the online visual internal detection device and a connected conventional pipeline internal detector or geometric detector.
Furthermore, each supporting leg is connected with the side shell through a supporting leg swinging mechanism.
Further, the auxiliary mileage wheel is used for mileage recording by the number of rotations of the wheel, and is compared and referred to the mileage record of the conventional in-pipe detector or the geometry detector to which the in-line visual in-detection device is connected.
An online visualization internal detection method of a gas transmission pipeline based on the device comprises the following steps:
(1) reading mileage data of a suspicious part, a tee joint, an elbow, a valve, an insulating joint or a designated position marked in advance through counting data of an auxiliary mileage wheel, carrying out video shooting, and carrying out video recording on the scene state in the pipeline in real time in the whole process;
(2) suspicious parts, special pipe tee joints, elbows, valves, insulating joints or positions with remarkably slowed running speeds, which are identified by the connected conventional in-pipeline detectors or geometric detectors in real time, send real-time logic instructions to the head high-pressure resistant integrated blocks, the tail high-pressure resistant integrated blocks, the side front high-pressure resistant integrated blocks and the side rear high-pressure resistant integrated blocks by the conventional in-pipeline detectors or geometric detectors, and perform real-time video shooting and evidence obtaining.
Further, the significant slowing is a speed reduction to a preset value of 30% or 50%.
Further, in the step (1), the auxiliary mileage wheel is used for mileage recording through the number of rotation turns of the wheel, and compared and referred to the mileage record of the conventional in-pipe detector or the geometric detector connected with the online visualization in-pipe detector: the method comprises the steps of aligning two sets of recorded data by taking mileage records of a detector or a geometric detector in a conventional pipeline as a standard, and proportionally stretching or shortening a measured value by taking mileage records of the detector or the geometric detector in the online visualization inner detection device as a measurement length by taking a tee joint, an elbow, a valve and an insulating joint as nodes and taking the mileage records of the detector or the geometric detector in the conventional pipeline as an actual length between the nodes.
Due to the adoption of the technical scheme, the invention has the following advantages: the invention solves the problems of high voltage resistance, relatively constant speed, constant power supply and data storage, is connected to a conventional pipeline detector or a geometric detector, can visually obtain evidence of suspicious parts and special pipe fittings (tee joints, elbows, valves, insulating joints and the like) in real time or in prepositioning when the conventional detection is carried out by the pipeline detector or the geometric detector, can also visually record the real-scene state in the pipeline in the whole process, can completely reflect visualized information of the detection result of the conventional pipeline detector or the geometric detector through the mileage recording function of the pipeline detector or the geometric detector, supplements functional information of the special pipe fittings (tee joints, elbows, valves, insulating joints and the like) except corrosion thinning and deformation, and increases the effective information amount detected by the conventional pipeline detector or the geometric detector.
Drawings
FIG. 1 is a schematic view of the overall structure of the detecting device of the present invention;
FIG. 2 is an end view of the test device of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in figures 1 and 2, the invention provides an online visual internal detection device for a gas transmission pipeline, which is a mechanical mechanism platform capable of moving inside the pipeline by means of support legs and auxiliary odometer wheels and is of a closed and pressure-resistant structure. The invention comprises a shell consisting of a side shell 1, a side front shell 2 and a side rear shell 3, wherein the side shell 1 is positioned in the middle, the front part of the side shell 1 is provided with the side front shell 2, and the rear part of the side shell 1 is provided with the side rear shell 3. The end part of the shell 2 positioned at the front side is provided with a head high-pressure resistant integrated block 4, and the end part of the shell 3 positioned at the rear side is provided with a tail high-pressure resistant integrated block 5. Four supporting legs 6 are circumferentially arranged at intervals in the middle of the side shell 1, each supporting leg 6 is connected with the side shell 1 through a supporting leg swinging mechanism 7, the supporting legs 6 can move within a certain angle through the supporting leg swinging mechanisms 7 to form flexibility, and inclination and collision are avoided so as to adapt to the change and the passability of the inner diameter size of a pipeline; and the end of each support leg 6 is provided with an auxiliary mileage wheel 8. The front end of the side surface shell 1 is circumferentially and uniformly provided with a plurality of side front high-pressure resistant integrated blocks 9, and the rear end of the side surface shell 1 is circumferentially and uniformly provided with a plurality of side rear high-pressure resistant integrated blocks 10.
In the above embodiment, a flexible external connection pipe 11 is further disposed inside the housing, and the end of the flexible external connection pipe 11 passes through the tail high-voltage-resistant integrated block 5 and is connected with a detector or a geometric detector in a conventional pipeline for power supply and data exchange. The flexible external connecting pipe 11 is internally provided with a connecting cable 12 and a connecting data line 13, the head high-voltage-resistant integrated block 4, the tail high-voltage-resistant integrated block 5, the side front high-voltage-resistant integrated block 9 and the side rear high-voltage-resistant integrated block 10 are connected with a battery unit of a conventional in-pipeline detector or a geometric detector through the connecting cable 12, and are connected with a data read-write unit and a logic control unit of the conventional in-pipeline detector or the geometric detector through the connecting data line 13.
In the above embodiment, the head high-voltage resistant integrated block 4, the tail high-voltage resistant integrated block 5, the front side high-voltage resistant integrated block 9 and the rear side high-voltage resistant integrated block 10 are integrated by the high-definition camera 14 and the LED lamp 15, and are used for lighting at different angles and video shooting at different angles. The head high-voltage resistant integrated block 4 is used for shooting a video of a front distant view in the advancing process; the front side high-pressure-resistant integrated block 9 and the rear side high-pressure-resistant integrated block 10 are used for carrying out close-range video shooting on the inner wall environment of the pipeline where the online visual internal detection device is located, and therefore video shooting of the annular 360-degree seamless inner wall state of the pipeline is achieved; the tail high-pressure-resistant integrated block 5 is used for carrying out video shooting on the real-scene state of the rear end of the online visual internal detection device and a connected conventional pipeline internal detector or geometric detector for post evaluation.
In the above embodiment, the auxiliary mileage wheel 8 is used for mileage recording by the number of revolutions of the wheel, and is compared and referred to the mileage record of the conventional in-pipe detector or the geometry detector to which the in-line visual in-pipe detection device is connected. Through comparison and reference, the effectiveness of the specific mileage record data of the device is verified, the mileage record of a conventional pipeline inner detector or a geometric detector is taken as a standard, the two sets of record data are aligned, the alignment method takes special pipe fittings (such as a tee joint, an elbow, a valve, an insulating joint and the like) as nodes, the mileage length between the nodes takes the mileage record of the conventional pipeline inner detector or the geometric detector as an actual length, and the specific mileage record length of the device is taken as a measurement length, and the measurement value is stretched or shortened in proportion.
During operation, mileage data is read through the counting data of the auxiliary mileage wheel 8 for suspicious parts, special pipe fittings (tee joints, elbows, valves, insulated joints and the like) or designated positions marked in advance, video shooting is carried out, and video recording is carried out on the scene state in the pipeline in real time in the whole process. Suspicious parts, special pipe fittings (tee joints, elbows, valves, insulated joints and the like) or positions with remarkably slow running speed which are identified by the connected conventional in-pipeline detectors or geometric detectors in real time are used for sending real-time logic instructions by the conventional in-pipeline detectors or the conventional geometric detectors, and the online visual in-pipeline detection device is used for carrying out real-time video shooting and evidence obtaining for subsequent interpretation and verification.
Based on the online visual internal detection device, the invention also provides an online visual internal detection method of the gas transmission pipeline, which comprises the following steps:
(1) the method comprises the steps of reading mileage data from a suspicious part, a special pipe fitting (a tee joint, an elbow, a valve, an insulating joint and the like) or a designated position marked in advance through the counting data of the auxiliary mileage wheel 8, carrying out video shooting and photographing, and marking the video shooting and photographing position through the read mileage data to correspond to a specific pipeline mileage position so as to carry out video recording on the whole real-time in-pipeline scene state.
(2) Suspicious parts, special pipe fittings (tee joints, elbows, valves, insulated joints and the like) or positions with remarkably slowed running speed which are identified by a conventional pipeline inner detector or a geometric detector connected in real time send real-time logic instructions to a head high-pressure resistant integrated block 4, a tail high-pressure resistant integrated block 5, a side front high-pressure resistant integrated block 9 and a side rear high-pressure resistant integrated block 10 by the conventional pipeline inner detector or the geometric detector, and real-time video shooting and evidence obtaining are carried out;
here, the significant slowing means that the speed is reduced to a preset value of 30% or 50%.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the embodiments without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a gas pipeline's online visual internal detection device which characterized in that: the shell comprises a side front shell, a side rear shell and a side shell, wherein the side front shell is arranged at the front part of the side shell, and the side rear shell is arranged at the rear part of the side shell; the end part of the shell positioned at the front side is provided with a head high-pressure-resistant integrated block, and the end part of the shell positioned at the rear side is provided with a tail high-pressure-resistant integrated block; four supporting legs are arranged at the middle part of the side surface shell at intervals in the circumferential direction, and an auxiliary mileage wheel is arranged at the end part of each supporting leg; the front end of the side surface shell is circumferentially and uniformly provided with a plurality of side front high-pressure resistant integrated blocks, and the rear end of the side surface shell is circumferentially and uniformly provided with a plurality of side rear high-pressure resistant integrated blocks.
2. The apparatus of claim 1, wherein: and a flexible external connecting pipe is arranged in the shell, and the end part of the flexible external connecting pipe penetrates through the tail high-pressure-resistant integrated block and is connected with a detector or a geometric detector in a conventional pipeline.
3. The apparatus of claim 2, wherein: a connecting cable and a connecting data wire are arranged in the flexible external connecting pipe; the head high-voltage-resistant integrated block, the tail high-voltage-resistant integrated block, the side front high-voltage-resistant integrated block and the side rear high-voltage-resistant integrated block are connected with a battery unit of the conventional in-pipeline detector or the geometric detector through the connecting cables, and are connected with a data reading and writing unit and a logic control unit of the conventional in-pipeline detector or the geometric detector through the connecting data lines.
4. The apparatus of any of claims 1 to 3, wherein: the head high-voltage-resistant integrated module, the tail high-voltage-resistant integrated module, the side front high-voltage-resistant integrated module and the side rear high-voltage-resistant integrated module are integrated by a high-definition camera and an LED lamp.
5. The apparatus of claim 4, wherein: the head high-voltage-resistant integrated module is used for shooting a video of a front distant view in the advancing process; the side front high-pressure-resistant integrated module and the side rear high-pressure-resistant integrated module are used for carrying out close-range video shooting on the inner wall environment of the pipeline where the online visual internal detection device is located; the tail high-pressure-resistant integrated module is used for carrying out video shooting on the real-scene state of the rear end of the online visual internal detection device and a connected conventional pipeline internal detector or geometric detector.
6. The apparatus of claim 1, wherein: each supporting leg is connected with the side shell through a supporting leg swinging mechanism.
7. The apparatus of claim 1, wherein: the auxiliary mileage wheel is used for mileage recording through the number of rotation turns of the wheel, and compared and referred to the mileage record of the conventional in-pipe detector or geometric detector to which the in-line visual in-detection device is connected.
8. An online visual internal inspection method of a gas pipeline based on the device according to any one of claims 1 to 7, characterized by comprising the following steps:
(1) reading mileage data of a suspicious part, a tee joint, an elbow, a valve, an insulating joint or a designated position marked in advance through counting data of an auxiliary mileage wheel, carrying out video shooting, and carrying out video recording on the scene state in the pipeline in real time in the whole process;
(2) suspicious parts, special pipe tee joints, elbows, valves, insulating joints or positions with remarkably slowed running speeds, which are identified by the connected conventional in-pipeline detectors or geometric detectors in real time, send real-time logic instructions to the head high-pressure resistant integrated blocks, the tail high-pressure resistant integrated blocks, the side front high-pressure resistant integrated blocks and the side rear high-pressure resistant integrated blocks by the conventional in-pipeline detectors or geometric detectors, and perform real-time video shooting and evidence obtaining.
9. The on-line visual in-inspection method of claim 8 wherein the significant slowing is a speed reduction to a preset value of 30% or 50%.
10. The on-line visual internal detection method according to claim 8, wherein in the step (1), the auxiliary mileage wheel is used for mileage recording by the number of rotations of the wheel, compared and referred to the mileage recording of the conventional in-pipe detector or the geometric detector to which the on-line visual internal detection device is connected: the method comprises the steps of aligning two sets of recorded data by taking mileage records of a detector or a geometric detector in a conventional pipeline as a standard, and proportionally stretching or shortening a measured value by taking mileage records of the detector or the geometric detector in the online visualization inner detection device as a measurement length by taking a tee joint, an elbow, a valve and an insulating joint as nodes and taking the mileage records of the detector or the geometric detector in the conventional pipeline as an actual length between the nodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110371356.6A CN112944107A (en) | 2021-04-07 | 2021-04-07 | Online visual internal detection device and method for gas transmission pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110371356.6A CN112944107A (en) | 2021-04-07 | 2021-04-07 | Online visual internal detection device and method for gas transmission pipeline |
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| CN112944107A true CN112944107A (en) | 2021-06-11 |
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| CN202110371356.6A Pending CN112944107A (en) | 2021-04-07 | 2021-04-07 | Online visual internal detection device and method for gas transmission pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483197A (en) * | 2021-06-30 | 2021-10-08 | 国机传感科技有限公司 | Self-adaptive variable-diameter multi-driving-wheel type pipeline crawling device |
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2021
- 2021-04-07 CN CN202110371356.6A patent/CN112944107A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483197A (en) * | 2021-06-30 | 2021-10-08 | 国机传感科技有限公司 | Self-adaptive variable-diameter multi-driving-wheel type pipeline crawling device |
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