CN209841730U - Pipeline endoscopic detection device - Google Patents
Pipeline endoscopic detection device Download PDFInfo
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- CN209841730U CN209841730U CN201920306928.0U CN201920306928U CN209841730U CN 209841730 U CN209841730 U CN 209841730U CN 201920306928 U CN201920306928 U CN 201920306928U CN 209841730 U CN209841730 U CN 209841730U
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Abstract
The utility model discloses a pipeline endoscopic detection device, which comprises an imaging system and a centering mechanism; the imaging system comprises a head imaging device and a rotatable side imaging device which are connected through a buckle; the centering mechanism is installed on the outer peripheral surface of the tail shell, one end of the centering mechanism is connected with the tail shell in a locking mode, the other end of the centering mechanism is in contact with the inner wall of the pipeline, and the centering mechanism can slide up and down along the inner wall of the pipeline to adjust the opening radius. Has the advantages that: the structured light laser and the imaging device are positioned at the same side of the visual field, can be fed from one side of the pipeline, and are convenient to use; the structured light projection device can rotate to realize the defect detection and depth detection at different angles and positions; the head imaging of the double imaging device is adopted, so that 360-degree annular imaging can be directly carried out, and the rapid observation of the inner wall condition of the pipeline is facilitated; when the defect or deformation part needs to be observed and measured, the lateral imaging device is used for measuring the size. The function segmentation can be carried out on conventional observation and precision measurement, and the equipment cost is reduced while the functionality is ensured.
Description
Technical Field
The utility model relates to a pipeline detection device; in particular to a detection device suitable for pipeline endoscopy.
Background
The pipeline is one of main devices for conveying gas-liquid media in industrial production and is widely applied to various industries. Most of the transported media have the characteristics of flammability, explosiveness, high temperature, high pressure and the like, so the integrity of the transported media needs to be detected regularly to ensure the safe operation of the pipeline. The defects of corrosion, pits, deformation and the like generated on the inner wall of the pipeline in the operation process have obvious influence on the safety, and the defects can be found as soon as possible by detecting the inner wall of the pipeline, so that the occurrence of accidents is reduced.
At present, the detection of the inner wall of the pipeline can be divided into two types of nondestructive detection and visual detection methods. The nondestructive detection method is to detect the defects of the inner wall of the pipeline by technical means such as rays, ultrasound, magnetic flux leakage, eddy current and the like. Among them, the ray method can only detect from the outside of the pipe, is inefficient, and it is difficult to determine the depth of the defect. Ultrasound generally employs guided wave methods, which can only determine the location of a defect in the radial direction, and is relatively insensitive. The magnetic flux leakage and eddy current method is usually implemented by adopting an internal detector, more defect position information can be obtained, but the detection result is not visual enough, the sensitivity is also low, and the method is sensitive to the shape and the size of the defect.
The visual detection method adopts the endoscopic device to probe into the pipeline, can directly observe the defects of the inner wall of the pipeline through the imaging device, and has the advantages of visual detection result and high sensitivity. The early endoscopic device can only observe the appearance of the defect, and the endoscopic detection device with the centering device which appears in recent years can calculate the area of the defect according to the obtained plane image information and by combining the parameters of an imaging system and the pipe diameter, but cannot provide the radial dimension information such as the depth of the defect, the deformation of the pipeline and the like. Or the technical scheme of adopting the structured light to carry out depth measurement needs to put the imaging device and the structured light laser from two sides of the pipeline respectively, and the actual field usually only allows a single side to put the detection device, so the application scene of the scheme is extremely limited.
Disclosure of Invention
The utility model aims to solve the technical problem that, overcome prior art defect, provide one kind and be fit for the endoscopic detection device in pipeline of image device and structured light laser device is put into to rotatable structure light and the unilateral of multiple pipe diameter pipeline inner wall.
The technical proposal adopted by the utility model is that the pipeline endoscopic detection device comprises an imaging system and a centering mechanism; the imaging system comprises a head imaging device and a rotatable side imaging device which are connected through a buckle; the centering mechanism is installed on the outer peripheral surface of the tail shell, one end of the centering mechanism is connected with the tail shell in a locking mode, the other end of the centering mechanism is in contact with the inner wall of the pipeline, and the centering mechanism can slide up and down along the inner wall of the pipeline to adjust the opening radius.
The head imaging device comprises a head shell, and an ultra-wide-angle lens imaging and head auxiliary illuminating lamp which are arranged on the head shell; the lateral imaging device comprises a lateral imaging shell, a lateral auxiliary illuminating lamp, a lateral lens, an imaging device, a structured light laser, a transparent protective cover, a driving motor and a driving gear, wherein the lateral auxiliary illuminating lamp, the lateral lens and the imaging device are arranged on the peripheral surface of the lateral imaging shell; the driving gear is connected with the driving motor, and the driving gear drives the lateral imaging shell and the driving device shell to rotate around the central shaft.
The head shell and the tail shell are connected through a middle shaft; the medial axis passes through a medial axis sleeve formed on a lateral imaging device housing that is coaxial with the head and tail housings, the lateral imaging device housing and the drive device housing being rotatable about the medial axis.
The outer diameter of the centering mechanism is equal to the inner diameter of the pipeline, and the axis of the centering mechanism coincides with the axis of the pipeline.
The tail end of the tail part of the.
The tail end of the tail shell is provided with a sliding ring.
The utility model has the advantages that 1, because the structured light laser and the imaging device are positioned at the same side of the visual field, the structured light laser and the imaging device can be fed from the single side of the pipeline, the use is convenient, and the utility model is suitable for the practical application of the industrial field;
2. the structured light projection device can rotate to realize the depth detection of the defects at different angles and positions;
3. the centering mechanism can adjust the working radius and is suitable for detecting the inner walls of all pipelines with the pipe diameters larger than the minimum opening radius of the centering mechanism and pipe-shaped containers with similar structures; the endoscopic detection system of the device is provided with the detachable and adjustable centering device, the detector is ensured to be positioned in the middle shaft of the pipeline, meanwhile, the device can be suitable for detecting various pipelines with diameters larger than the minimum size of the centering device, and the universality is strong.
4, the head imaging device can directly perform 360-degree annular imaging by adopting a double-imaging device design, so that the condition of the inner wall of the pipeline can be rapidly observed; when the defect or deformation part needing specific observation and measurement is found, the size measurement is carried out through a lateral imaging device. The mode can divide functions of conventional observation and precision measurement, improves detection efficiency, optimizes and designs each imaging system according to main functions of the imaging system, ensures functionality and reduces equipment cost.
Drawings
Fig. 1 is a schematic sectional structure diagram of the detection device of the present invention.
In the figure:
1. super wide-angle lens and imaging device 2, head auxiliary illuminating lamp 3, head shell
4. Middle shaft 5, fastener 6, lateral imaging device shell 7, lateral auxiliary lighting lamp
8. Lateral lens and imaging device 9, structured light laser 10, transparent protective cover
11. A middle shaft sleeve 12, a driving device shell 13 and a driving motor
14. Driving gear 15, cover 16 and slip ring
17. Tail housing 18, tail plug 19, centering mechanism.
Detailed Description
The invention will be described in further detail with reference to the following drawings and embodiments:
as shown in fig. 1, the present invention relates to a device for detecting pipeline endoscopy, which comprises an imaging system and a centering mechanism 19; the imaging system comprises a head imaging device and a rotatable side imaging device which are connected through a buckle 5; the head imaging system is used for carrying out wide-angle imaging on the inner wall of the pipeline; the rotatable lateral imaging and structured light sounding system is used for measuring the area and the depth of the defect. Centering mechanism 19 installs in the outer peripheral face of afterbody shell 17, and centering mechanism 19 one end and afterbody shell 17 locking connection can adjust the locking position as required, and centering mechanism 19 other end and pipeline inner wall contact, centering mechanism 19 can slide the adjustment from top to bottom along the pipeline inner wall and open the radius to adapt to different pipeline internal diameters.
The head imaging device can directly perform 360-degree annular imaging, is convenient for rapidly observing the condition of the inner wall of a pipeline and comprises a head shell 3, an ultra-wide-angle lens imaging 1 and a head auxiliary illuminating lamp 2, wherein the ultra-wide-angle lens imaging 1 and the head auxiliary illuminating lamp 2 are arranged on the head shell 3; when the lateral imaging device finds a defect or a deformation part needing specific observation and measurement, the lateral imaging device is used for measuring the size. In the mode, the functions of conventional observation and precision measurement can be divided, the detection efficiency is improved, and simultaneously, each imaging system can be optimized and designed aiming at the main function of the imaging system, the functionality is ensured, and the equipment cost is reduced, wherein the imaging system comprises a lateral imaging shell 6, a lateral auxiliary illuminating lamp 7, a lateral lens and imaging 8, a structured light laser 9, a transparent protective cover 10, a sleeve cover 15, a driving motor 13 and a driving gear 14, wherein the lateral auxiliary illuminating lamp 7, the lateral lens and imaging 8, the structured light laser 9, the transparent protective cover 10 and the sleeve cover 15 are arranged on the peripheral surface of the; the driving gear 14 is connected with a driving motor 13, and the driving gear 14 drives the lateral imaging shell (6) and the driving device shell 12 to rotate around a central shaft; the cap 15 is rigidly connected to the drive housing 12 for keeping the drive housing 12 connected to the rear housing 17 in the longitudinal direction without falling off, and the cap 15 is rotatable together with the rear housing 17.
The head shell 3 and the tail shell 17 are connected through a middle shaft 4 and are kept relatively fixed after being installed; the middle shaft penetrates through a middle shaft sleeve 11 formed on a lateral imaging device shell 6, the lateral imaging device shell 6 is coaxial with a head shell 3 and a tail shell 17, and a slip ring 16 is arranged at the lower end part of the middle shaft 4 and the inner wall of the tail shell 17; the lateral imaging device housing 6 and the drive device housing 12 can rotate about the central axis 4. The outer diameter of the centering mechanism 19 is equal to the inner diameter of the pipeline, the centering mechanism has a locking function, and the axis of the centering mechanism 19 coincides with the axis of the pipeline. The slip ring 16 electrically connects the communication and power supply lines in the rotatable lateral imaging device to the interior of the tail housing and ultimately to the tail plug in common with the cable of the head imaging device. The slip ring can keep the contact of one side cable rotatory along with side direction image device, and the output contact of opposite side is relatively fixed, avoids appearing the contact failure and the rotatory restricted problem that the cable winding leads to.
The working principle and the application of the present invention are further explained as follows:
the ultra-wide-angle lens and the imaging device perform full-angle imaging on the inner wall of the pipeline and transmit the image to the outside through the inside of the middle shaft and the tail plug 18; the structured light emitted by the structured light laser is projected to the inner wall of the pipeline through the transparent protecting cover; the lateral imaging device images the inner wall of the pipeline and the projected structured light and transmits the images to an external computer for processing through the slip ring and the tail plug; the drive motor may drive the gear to rotationally move the imaging device housing to control the structured light beam and the angle of the lateral imaging device.
When the centering device is used, the detection device firstly adjusts the centering mechanism to enable the outer diameter of the centering mechanism to be equal to the inner diameter of the pipeline, so that the axis of the device is enabled to coincide with the axis of the pipeline after the centering mechanism is placed. When the detection is implemented, the ultra-wide-angle lens and the imaging device perform 360-degree circumferential imaging on the inner wall of the pipeline under the irradiation of the auxiliary illuminating lamp, and the image data is transmitted to an upper computer, so that the corrosion condition of the inner wall can be observed rapidly.
When the defects of the inner wall of the pipeline are rapidly observed and found, the lateral imaging system is adjusted to be just opposite to the defect part for imaging by moving the detection device and the driving motor along the axial direction, and the plane size and the area information of the defects can be measured at the moment according to the parameters of the optical system; and then, opening the structured light laser, projecting the light beam to the position of the defect to be detected, wherein the shape of the light beam changes along with the appearance outline of the inner wall of the pipeline, imaging the structured light beam by the lateral imaging device and transmitting the imaged structured light beam to an upper computer for processing, calculating to obtain inner wall outline axial dimension information corresponding to the light beam based on pre-calibrated imaging system parameters, the inner diameter of the pipe wall and a geometric space transformation model, and combining the two to realize the measurement of the three-dimensional information of the defect of the inner wall of the pipeline.
Because a lateral imaging device and a structured light depth measuring system are adopted, the shape of the inner wall of the pipeline and the depth of the defect can be measured, and the three-dimensional information of the defect is provided by combining an endoscopic imaging device; in addition, the endoscopic detection system is provided with a detachable and adjustable centering device, the detector is ensured to be positioned in the middle shaft of the pipeline, meanwhile, the endoscopic detection system is suitable for detecting various pipelines with diameters larger than the minimum size of the centering device, and the universality is strong.
It is worth pointing out that the protection scope of the present invention is not limited to the above-mentioned specific example mode, according to the present invention, the basic technical concept can also be used with basically the same structure, and the purpose of the present invention can be achieved, for example, the projection of the lateral structured light can be realized by the cooperation of the reflective mirror and the structured light laser, but it has higher requirement for precision, and the cost can be higher than the present device. The embodiments that can be imagined by those skilled in the art without creative work belong to the protection scope of the present invention.
Claims (6)
1. A device for endoscopic detection of a duct, comprising an imaging system and a centering mechanism (19); the imaging system comprises a head imaging device and a rotatable side imaging device which are connected through a buckle (5); the centering mechanism (19) is installed on the outer peripheral surface of the tail shell (17), one end of the centering mechanism (19) is in locking connection with the tail shell (17), the other end of the centering mechanism (19) is in contact with the inner wall of the pipeline, and the centering mechanism (19) can slide up and down along the inner wall of the pipeline to adjust the opening radius.
2. The endoscopic pipeline detection device according to claim 1, wherein the head imaging device comprises a head housing (3), and an ultra-wide-angle lens imaging (1) and a head auxiliary illuminating lamp (2) mounted on the head housing (3); the lateral imaging device comprises a lateral imaging device shell (6), a lateral auxiliary illuminating lamp (7), a lateral lens, an imaging device (8), a structured light laser (9), a transparent protective cover (10), a driving motor (13) and a driving gear (14), wherein the lateral auxiliary illuminating lamp (7), the lateral lens and the imaging device are arranged on the peripheral surface of the lateral imaging device shell (6); the driving gear (14) is connected with the driving motor (13), and the driving gear (14) drives the lateral imaging device shell (6) and the driving device shell (12) to rotate around the central shaft (4).
3. The endoscopic pipeline inspection device according to claim 2, wherein the head housing (3) and the tail housing (17) are connected by a central shaft (4); the central shaft penetrates through a central shaft sleeve (11) formed on a lateral imaging device shell (6), the lateral imaging device shell (6) is coaxial with the head shell (3) and the tail shell (17), and the lateral imaging device shell (6) and the driving device shell (12) can rotate around the central shaft (4).
4. The endoscopic pipeline inspection device according to claim 1, wherein the outer diameter of the centering mechanism (19) is equal to the inner diameter of the pipeline, and the axial center of the centering mechanism (19) coincides with the pipeline axis.
5. The endoscopic pipeline inspection device according to claim 1, further comprising a cap (15) rigidly connected to the drive unit housing (12), wherein the cap (15) and the tail housing (17) rotate relative to each other.
6. The endoscopic pipeline inspection device according to claim 1, further comprising a slip ring (16) mounted on the inner periphery of the tail housing (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920306928.0U CN209841730U (en) | 2019-03-11 | 2019-03-11 | Pipeline endoscopic detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920306928.0U CN209841730U (en) | 2019-03-11 | 2019-03-11 | Pipeline endoscopic detection device |
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| Publication Number | Publication Date |
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| CN209841730U true CN209841730U (en) | 2019-12-24 |
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| CN201920306928.0U Active CN209841730U (en) | 2019-03-11 | 2019-03-11 | Pipeline endoscopic detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664807A (en) * | 2020-04-24 | 2020-09-15 | 河北津西钢铁集团股份有限公司 | Rotary structure optical method pipeline detection system |
| CN111735403A (en) * | 2020-05-14 | 2020-10-02 | 国网浙江宁波市鄞州区供电有限公司 | Detection assembly for cable duct detection device and cable duct detection device |
| CN114812422A (en) * | 2022-04-13 | 2022-07-29 | 中国人民解放军火箭军工程大学 | Method and device for measuring geometric characteristics of inner cavity of solid rocket engine |
-
2019
- 2019-03-11 CN CN201920306928.0U patent/CN209841730U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664807A (en) * | 2020-04-24 | 2020-09-15 | 河北津西钢铁集团股份有限公司 | Rotary structure optical method pipeline detection system |
| CN111735403A (en) * | 2020-05-14 | 2020-10-02 | 国网浙江宁波市鄞州区供电有限公司 | Detection assembly for cable duct detection device and cable duct detection device |
| CN114812422A (en) * | 2022-04-13 | 2022-07-29 | 中国人民解放军火箭军工程大学 | Method and device for measuring geometric characteristics of inner cavity of solid rocket engine |
| CN114812422B (en) * | 2022-04-13 | 2023-08-08 | 中国人民解放军火箭军工程大学 | Method and device for measuring geometrical characteristics of inner cavity of solid rocket engine |
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