An indoor pipeline external defect positioning and detecting device

Abstract

The application discloses an indoor pipeline external defect positioning and detecting device and belongs to the field of pipeline defect detection. The device comprises a detecting clamp, a driving clamp and four connecting reinforcing ribs. The detecting clamp and the driving clamp each comprise a pair of half-circular positioning arms which are hingedly connected to each other. Through holes are equidistantly formed in the positioning arms. The device can detect the external defects of a pipeline in real time through an industrial vision camera. After detecting a defect, a stepping motor, a screw and a nut and a swing arm are linked to drive a paint spraying box to rotate to a marking posture. A spray head automatically sprays paint to physically mark the position of the defect. During the rotation of the paint spraying box, an arc surface sliding seat is pressed by a limiting seat, so that a linkage switch is triggered again to stop the device. On the basis of completing the buffer protection, the defect is visually marked. The image recording is convenient for subsequent maintenance positioning and review, and the pipeline defect detection and maintenance efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of pipeline defect detection, specifically an indoor pipeline external defect location and detection device. Background Technology

[0002] Pipeline external defect location and detection device is a special equipment used to detect external defects in indoor pipelines and assist in pipeline maintenance and repair. As the core carrier of fluid transportation, pipelines are widely used in many fields such as municipal, chemical and civil buildings. As the service life of pipelines increases, external defects such as corrosion and damage are prone to appear. If they are not detected and dealt with in time, they can easily cause safety hazards such as leakage. Therefore, pipeline external defect detection has become a key link to ensure the safe operation of pipelines.

[0003] Existing external pipeline inspection devices cannot promptly detect and stop when encountering protruding obstacles such as flanges and valves while moving along the pipeline. This can easily lead to rigid collisions between the device and the obstacles, causing the device to jam or be damaged. It may also scratch or damage the pipeline surface, affecting the safety and continuity of the inspection process. Furthermore, it can only detect pipeline defects and record images, lacking physical marking functions linked to the inspection action. After the inspection is completed, staff cannot quickly and intuitively locate the specific location of the defect. They need to repeatedly search by comparing the image records, which not only increases the workload of subsequent maintenance but also easily leads to defect location errors, affecting maintenance efficiency and the completeness of maintenance. Summary of the Invention

[0004] To overcome the above-mentioned shortcomings, the present invention provides an indoor pipe external defect location and detection device, which solves the problems that existing pipe defect detection devices cannot perform travel buffering and cannot mark the defect location.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an indoor pipe external defect location and detection device, comprising:

[0006] The system includes a detection clamp, a drive clamp, and four connecting reinforcing ribs. Both the detection clamp and the drive clamp include a pair of semi-circular positioning arms that are hinged to each other. The positioning arms have through openings that are equidistantly spaced. The through openings have built-in sliding sleeves. The sliding sleeves have slidably connected clamping arms. One end of each clamping arm is fixedly connected to a rotating seat. The rotating seat has a roller that is rotatably connected to it.

[0007] The four connecting reinforcing ribs are arranged between the detection clamp and the drive clamp to connect the two.

[0008] Both clamping arms of the inspection clamp have notches, and a buffer-marking mechanism is installed in the notches. An industrial vision camera is installed on the clamping arm corresponding to the position of the buffer-marking mechanism. The industrial vision camera is used to detect external defects in the pipeline.

[0009] As a further aspect of the present invention: the clamping arm is provided with scale markings, and the sliding sleeve is threadedly connected with a threaded knob.

[0010] As a further aspect of the present invention: a micro servo motor is provided on one side of the rotating seat on the upper clamping arm of the drive clamp, and the micro servo motor is used to drive the roller in the corresponding rotating seat to rotate.

[0011] As a further aspect of the present invention: the buffer-marking mechanism includes a mounting bracket fixedly connected to the notch position, a paint box rotatably connected to the mounting bracket, a partition inside the paint box, a spray nozzle connected to one end of the paint box, and the partition dividing the internal space of the paint box into a storage end for storing paint and a redundant end, with the spray nozzle located on the storage end side.

[0012] As a further embodiment of the present invention: a linkage switch is fixedly connected to the side of the partition facing the redundant end, a slider is slidably connected inside the redundant end, a connecting rod is fixedly connected to one side of the slider, the connecting rod passes through the paint box and is slidably connected thereto, and an arc-shaped slide block is fixedly connected to the end of the connecting rod away from the slider.

[0013] As a further aspect of the present invention: a compression spring is sleeved on the connecting rod, one end of the compression spring abutting against the arc-shaped slide block, and the other end abutting against the paint spray box.

[0014] As a further embodiment of the present invention: a right-angled frame plate is fixedly connected to the mounting bracket, and a limiting seat matching the arc-shaped slide is fixedly connected to the bottom of the right-angled frame plate.

[0015] As a further embodiment of the present invention: a U-shaped sliding plate is fixedly connected to the top of the right-angle frame plate, and a strip slider is slidably connected inside the U-shaped sliding plate. Both ends of the strip slider are rotatably connected to swing arms, and the end of the swing arm away from the strip slider is rotatably connected to the side of the paint box.

[0016] As a further embodiment of the present invention: a strip-shaped opening is provided on one side of the right-angle frame plate, and a semi-circular guard plate is fixedly connected to the right-angle frame plate at the position corresponding to the strip-shaped opening. A lead screw is rotatably connected inside the semi-circular guard plate, and a lead screw nut is threaded onto the lead screw. The lead screw nut is fixedly connected to the strip-shaped slider, and the lead screw nut is slidably connected inside the strip-shaped opening.

[0017] As a further embodiment of the present invention: a stepper motor for driving the lead screw to rotate is provided on the top of the semicircular guard plate, and the output end of the stepper motor passes through the semicircular guard plate and is fixedly connected to the lead screw coaxially.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The device adopts a split clamp structure with a detection clamp and a drive clamp connected by reinforcing ribs. The clamp consists of a hinged semi-circular positioning arm that can be opened and closed to fit outside the pipe. The clamping arm can be extended and adjusted within the sliding sleeve and locked by a threaded knob. With the help of scale markings, the extension of multiple clamping arms is consistent, ensuring that the device is concentric with the pipe. It can adapt to indoor pipes of different diameters and ensure that the industrial vision camera has a uniform detection range and stable imaging. The overall structure has sufficient rigidity and is easy to install and use.

[0020] 2. By setting a buffer-marking mechanism at the clamp arm of the detection clamp, when the arc-shaped slide block contacts obstacles such as flanges, the compression spring can provide buffering and avoid rigid collisions that could damage the device and pipelines; at the same time, the movement of the connecting rod and the slider triggers the linkage switch, which directly controls the micro servo motor to stop and brake, realizing automatic braking when encountering obstacles, effectively preventing the device from jamming or being damaged.

[0021] 3. Industrial vision cameras detect external defects in pipelines in real time. Once a defect is detected, the spray gun can be driven to rotate to the marking position via a stepper motor, lead screw and nut and swing arm linkage. The spray head automatically sprays paint to physically mark the defect location. During the rotation of the spray gun, the arc-shaped slide is restricted by the pressure of the seat, which can trigger the linkage switch again to stop the machine. On the basis of buffer protection, the defect is visually marked. Combined with image recording, it is convenient for subsequent inspection and maintenance positioning and review, which greatly improves the efficiency of pipeline defect detection and maintenance. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0024] Figure 3 This is a three-dimensional structural diagram of the drive clamp part of the present invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the detection clamp part of the present invention;

[0026] Figure 5 for Figure 3 Enlarged view of section B;

[0027] Figure 6 This is a three-dimensional internal structure diagram of the paint spray box of the present invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the spiral-shaped sliding plate portion of the present invention.

[0029] In the diagram: 1. Detection clamp; 2. Drive clamp; 3. Connecting reinforcing rib; 4. Clamping arm; 5. Sliding sleeve; 6. Positioning arm; 7. Rotating seat; 8. Roller; 9. Buffer-marking mechanism; 10. Industrial vision camera; 11. Threaded knob; 12. Micro servo motor; 91. Mounting bracket; 92. Spray paint box; 93. Partition plate; 94. Spray nozzle; 95. Linkage switch; 96. Slider; 97. Connecting rod; 98. Arc-shaped slide block; 99. Compression spring; 910. Right-angle bracket plate; 911. Limit seat; 912. U-shaped sliding plate; 913. Strip slider; 914. Swing arm; 915. Semi-circular guard plate; 916. Lead screw; 917. Lead nut; 918. Stepper motor. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0031] Example 1, referring to Figure 1 , Figure 3 and Figure 4 This is the first embodiment of the present invention. This embodiment provides an indoor pipe external defect location and detection device, which can be installed on the outside of the pipe to be detected in order to realize the detection of external defects of the pipe. It includes a detection clamp 1, a drive clamp 2 and four connecting reinforcing ribs 3. The detection clamp 1 and the drive clamp 2 each include a pair of semi-circular positioning arms 6 that are hinged to each other. The positioning arms 6 are provided with through openings at equal intervals. The through openings are equipped with sliding sleeves 5. The sliding sleeves 5 are slidably connected to clamping arms 4. One end of the clamping arms 4 is fixedly connected to a rotating seat 7. The rotating seat 7 is rotatably connected to a roller 8.

[0032] Four connecting reinforcing ribs 3 are set between the detection clamp 1 and the drive clamp 2 to connect the two. The detection clamp 1 and the drive clamp 2 are matched with each other. The connecting reinforcing ribs 3 connect the two and provide a certain structural rigidity. When in use, the detection clamp 1 and the drive clamp 2 are opened and fitted on the outside of the pipe being inspected. The end of the detection clamp 1 and the drive clamp 2 away from the hinge end can be fixed by bolts. In order to match pipes of different radii, the position of the clamp arm 4 relative to the sliding sleeve 5 can be adjusted until the roller 8 in the rotating seat 7 on the four clamp arms 4 abuts against the outer surface of the pipe.

[0033] The two clamping arms 4 of the inspection clamp 1 are provided with notches, and a buffer-marking mechanism 9 is provided in the notches. An industrial vision camera 10 is provided on the clamping arm 4 corresponding to the position of the buffer-marking mechanism 9. The industrial vision camera 10 is used to detect external defects of the pipeline. There are two industrial vision cameras 10, which are used in conjunction with wide-angle lenses to achieve all-round inspection.

[0034] Example 2, refer to Figure 2 - Figure 3This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a specific adjustment principle and method for the clamping arm 4, as well as the main function of the driving clamp 2. It includes a scale mark on the clamping arm 4 and a threaded knob 11 threaded through the sliding sleeve 5. In order to ensure that the driving clamp 2 and the detection clamp 1 are concentric with the pipe being tested, the adjustment distance of each clamping arm 4 must be consistent. The scale mark on the clamping arm 4 provides a quantitative standard. The concentricity process is to ensure that the detection range of the two industrial vision cameras 10 is completely consistent when the industrial vision cameras 10 are performing detection and shooting. After the adjustment is completed, the clamping arm 4 needs to be kept stable. This requires manually rotating the threaded knob 11. The end of the threaded knob 11 is connected to a stop block. The stop block abuts against the clamping arm 4 to lock the clamping arm 4.

[0035] A micro servo motor 12 is provided on one side of the rotating seat 7 located on the clamping arm 4 of the drive clamp 2. The micro servo motor 12 is used to drive the roller 8 in the corresponding rotating seat 7 to rotate. The micro servo motor 12 is directly connected to the axle of the roller 8. The four micro servo motors 12 are controlled by the main control unit to ensure that their speeds are consistent.

[0036] The rest of the structure is the same as in Example 1.

[0037] Example 3, referring to Figure 4 - Figure 7 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides the specific structure and working principle of the buffer-marking mechanism 9, which includes: the buffer-marking mechanism 9 includes a mounting frame 91 fixedly connected to the notch position, a paint box 92 rotatably connected to the mounting frame 91, a partition 93 inside the paint box 92, a nozzle 94 connected to one end of the paint box 92, the partition 93 dividing the internal space of the paint box 92 into a storage end for storing paint and a redundant end, the nozzle 94 being located on the storage end side, a linkage switch 95 fixedly connected to the side of the partition 93 facing the redundant end, a slider 96 slidably connected inside the redundant end, a connecting rod 97 fixedly connected to one side of the slider 96, the connecting rod 97 passing through the paint box 92 and slidably connected thereto, an arc-shaped slide block 98 fixedly connected to the end of the connecting rod 97 away from the slider 96, a compression spring 99 sleeved on the connecting rod 97, one end of the compression spring 99 abutting against the arc-shaped slide block 98, and the other end abutting against the paint box 92;

[0038] The partition 93 inside the paint spray box 92 divides its internal space. The spray head 94 has a built-in solenoid valve. In the initial state, the slider 96, connecting rod 97 and arc-shaped slider 96 are parallel to the axis of the detection clamp 1. When the device moves as a whole and comes into contact with the flange or other obstacles at the pipe connection, the arc-shaped slider 96 will contact the obstacle first. The compression spring 99 on the connecting rod 97 will provide a buffer. When the compression spring 99 contracts, the connecting rod 97 and slider 96 will move and trigger the linkage switch 95. The linkage switch 95 is electrically connected to four micro servo motors 12. At this time, the micro servo motors 12 control the roller 8 to stop rotating to achieve braking.

[0039] A right-angled bracket plate 910 is fixedly connected to the mounting bracket 91. A limiting seat 911 matching the curved slide block 98 is fixedly connected to the bottom of the right-angled bracket plate 910. A U-shaped sliding plate 912 is fixedly connected to the top of the right-angled bracket plate 910. A strip slider 913 is slidably connected inside the U-shaped sliding plate 912. Both ends of the strip slider 913 are rotatably connected to swing arms 914. The end of the swing arm 914 away from the strip slider 913 is rotatably connected to the side of the paint spray box 92. A strip-shaped opening is provided on one side of the right-angled bracket plate 910. A semi-circular guard plate 915 is fixedly connected to the right-angle bracket plate 910 at the position corresponding to the strip opening. A lead screw 916 is rotatably connected inside the semi-circular guard plate 915. A lead screw nut 917 is threaded onto the lead screw 916. The lead screw nut 917 is fixedly connected to the strip slider 913. The lead screw nut 917 is slidably connected inside the strip opening. A stepper motor 918 for driving the lead screw 916 to rotate is set on the top of the semi-circular guard plate 915. The output end of the stepper motor 918 passes through the semi-circular guard plate 915 and is fixedly connected to the lead screw 916 coaxially.

[0040] When the industrial vision camera 10 detects a defect on the pipe surface, the stepper motor 918 drives the lead screw 916 to rotate. The threaded nut 917 on the lead screw 916 moves down, and the strip slider 913 connected to the nut 917 also moves down within the U-shaped slide plate 912. Since the two swing arms 914 are rotatably connected to the strip slider 913, the swing arms 914 will drive the paint box 92 to rotate at a certain angle with its rotation axis and the mounting bracket 91 as the center. When the strip slider 913 moves down to the bottom position, the spray nozzle 94 on the paint box 92 is facing down, and the spray nozzle 94 can spray paint markings to indicate to the staff that there is a defect in the vicinity of this location. This, combined with the storage and recording of the industrial vision camera 10, enables review and achieves complete pipe maintenance and repair.

[0041] In addition, when the paint box 92 rotates, the curved slider 96 will also rotate. When the curved slider 96 rotates, it will contact the limit seat 911. The bottom of the limit seat 911 is also curved. As the curved slider 96 rotates, it will gradually move down due to the pressure of the limit seat 911. When it rotates to the maximum angle, the compression spring 99 will contract, and the connecting rod 97 and the slider 96 will move and trigger the linkage switch 95, thereby stopping the micro servo motor 12.

[0042] It should be noted that the automatic control-related content involved in this invention can be directly implemented through existing control ports using PLC technology, which is existing technology and therefore will not be elaborated upon.

[0043] The rest of the structure is the same as in Example 2.

[0044] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A device for locating and detecting external defects in indoor pipelines, characterized in that, include: The test clamp (1), drive clamp (2) and four connecting reinforcing ribs (3) are provided. Both the test clamp (1) and drive clamp (2) include a pair of semi-circular positioning arms (6) that are hinged to each other. Through openings are provided at equal intervals on the positioning arms (6). A sliding sleeve (5) is built into the through opening. A clamping arm (4) is slidably connected inside the sliding sleeve (5). A rotating seat (7) is fixedly connected to one end of the clamping arm (4). A roller (8) is rotatably connected inside the rotating seat (7). The four connecting reinforcing ribs (3) are arranged between the detection clamp (1) and the driving clamp (2) to connect the two; The two clamping arms (4) of the detection clamp (1) are provided with notches, and a buffer-marking mechanism (9) is provided in the notches. An industrial vision camera (10) is provided on the clamping arm (4) corresponding to the position of the buffer-marking mechanism (9). The industrial vision camera (10) is used to detect external defects of the pipeline.

2. The device for locating and detecting external defects in indoor pipelines according to claim 1, characterized in that: The clamping arm (4) is provided with scale markings, and the sliding sleeve (5) is threadedly connected with a threaded knob (11).

3. The device for locating and detecting external defects in indoor pipelines according to claim 1, characterized in that: A micro servo motor (12) is provided on one side of the rotating seat (7) on the upper clamping arm (4) of the drive clamp (2). The micro servo motor (12) is used to drive the roller (8) inside the corresponding rotating seat (7) to rotate.

4. The device for locating and detecting external defects in indoor pipelines according to claim 1, characterized in that: The buffer-marking mechanism (9) includes a mounting bracket (91) fixedly connected to the notch position. A paint box (92) is rotatably connected to the mounting bracket (91). The paint box (92) has a partition (93) inside. A nozzle (94) is connected to one end of the paint box (92). The partition (93) divides the internal space of the paint box (92) into a storage end and a redundant end for storing paint. The nozzle (94) is located on the storage end side.

5. The device for locating and detecting external defects in indoor pipelines according to claim 4, characterized in that: A linkage switch (95) is fixedly connected to the side of the partition (93) facing the redundant end. A slider (96) is slidably connected inside the redundant end. A connecting rod (97) is fixedly connected to one side of the slider (96). The connecting rod (97) passes through the paint box (92) and is slidably connected to it. An arc-shaped slide block (98) is fixedly connected to the end of the connecting rod (97) away from the slider (96).

6. The device for locating and detecting external defects in indoor pipelines according to claim 5, characterized in that: A compression spring (99) is fitted on the connecting rod (97). One end of the compression spring (99) abuts against the arc-shaped slide (98), and the other end abuts against the paint box (92).

7. The device for locating and detecting external defects in indoor pipelines according to claim 6, characterized in that: A right-angle bracket plate (910) is fixedly connected to the mounting bracket (91), and a limiting seat (911) matching the arc-shaped slide (98) is fixedly connected to the bottom of the right-angle bracket plate (910).

8. The device for locating and detecting external defects in indoor pipelines according to claim 7, characterized in that: The top of the right-angle frame (910) is fixedly connected to a U-shaped slide plate (912), and a strip slider (913) is slidably connected inside the U-shaped slide plate (912). Both ends of the strip slider (913) are rotatably connected to a swing arm (914), and the end of the swing arm (914) away from the strip slider (913) is rotatably connected to the side of the paint box (92).

9. The device for locating and detecting external defects in indoor pipelines according to claim 8, characterized in that: A strip-shaped opening is provided on one side of the right-angle frame plate (910). A semi-circular guard plate (915) is fixedly connected to the right-angle frame plate (910) at the position corresponding to the strip-shaped opening. A lead screw (916) is rotatably connected inside the semi-circular guard plate (915). A nut (917) is threadedly connected to the lead screw (916). The nut (917) is fixedly connected to the strip-shaped slider (913). The nut (917) is slidably connected inside the strip-shaped opening.

10. The device for locating and detecting external defects in indoor pipelines according to claim 9, characterized in that: The top of the semicircular guard plate (915) is provided with a stepper motor (918) for driving the lead screw (916) to rotate. The output end of the stepper motor (918) passes through the semicircular guard plate (915) and is coaxially fixedly connected to the lead screw (916).

Images