A self-propelled adjusting module applied to stainless steel corrugated pipe detection

Abstract

The present application relates to the technical field of stainless steel bellows detection control, and particularly relates to a self-propelled adjusting module applied to stainless steel bellows detection, which comprises a ring-shaped main frame, an electrically-controlled turnover arm hinged in the ring-shaped main frame, an electrically-controlled walking wheel set hinged at the end of the electrically-controlled turnover arm, an electrically-controlled rotating frame movably sleeved on the outer arc surface of the ring-shaped main frame, and a centrifugal adjusting arm of a multi-directional optical detection mechanism elastically assembled at the end of the outer arc surface of the electrically-controlled rotating frame. The angle of the electrically-controlled turnover arm and the centrifugal adjusting arm can be adjusted to adapt to stainless steel bellows of different diameters, and the detection device does not need to be replaced, thereby reducing the equipment investment cost. The electrically-controlled turnover arm controls the electrically-controlled walking wheel set hinged at the end to be turned over and extruded on the inner wall of the stainless steel bellows, so that the multi-directional optical detection mechanism is always kept at the center position of the bellows, and the false detection and missed detection caused by the probe sticking to the wall are avoided, and the detection precision is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of stainless steel corrugated pipe inspection and control technology, and in particular to a self-regulating adjustment module for stainless steel corrugated pipe inspection. Background Technology

[0002] There are various methods for inspecting stainless steel corrugated pipes, with internal wall inspection being a key technical challenge. Currently, the mainstream methods for internal wall inspection include: industrial endoscopy inspection: visually inspecting the pipe by inserting an optical probe inside; ultrasonic testing: using high-frequency sound waves to detect internal defects, or using magnetostrictive guided wave technology for long-distance scanning; X-ray inspection: using X / γ rays to penetrate and display the internal structure through film or an imaging plate; penetrant testing: applying a penetrant to the internal wall, allowing it to seep into surface openings through capillary action, followed by imaging; and PT-IE method: first performing penetrant testing on the internal wall, then observing the imaging results using an industrial endoscope.

[0003] The above-mentioned detection methods have significant limitations on the length and specifications of stainless steel corrugated pipes. Furthermore, the detection process cannot maintain centering during insertion, which can easily lead to false positives or false negatives. This also places high demands on operators and increases the detection cost. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the current detection methods for the inner wall of stainless steel corrugated pipes have great limitations on the length and specifications of the stainless steel corrugated pipes, and it is impossible to keep the detection centered throughout the insertion process, which makes it easy to make false detections or missed detections. The requirements for operators and the detection cost are relatively high.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a self-propelled adjustment module for the inspection of stainless steel corrugated pipes, including an annular main frame, an electrically controlled tilting arm hinged inside the annular main frame, an electrically controlled walking wheel set hinged at the end of the electrically controlled tilting arm, an electrically controlled rotating frame movably mounted on the outer arc surface of the annular main frame, and a centrifugal adjustment arm of a multi-directional optical inspection mechanism elastically mounted at the end of the outer arc surface of the electrically controlled rotating frame.

[0006] An external adjustment groove is provided on the outer arc-shaped surface of the annular main frame, and a plurality of arc-shaped control ports are provided on the inner arc-shaped surface of the external adjustment groove.

[0007] The electrically controlled rotating frame includes an inner adjusting ring inserted into the outer adjusting groove, an adjusting motor fixed on the inner wall of the annular main frame, and a transmission gear meshing with the annular tooth groove on the inner side of the inner adjusting ring. The transmission gear is axially fixed on the lateral adjusting shaft of the adjusting motor.

[0008] An internal support frame is fixed inside the annular main frame.

[0009] The electrically controlled tilting arm includes a tilting adjustment arm hinged inside the internal support frame and a tilting adjustment strut for controlling the tilting adjustment arm.

[0010] The electrically controlled walking wheel assembly includes a strip-shaped tilting frame hinged to the end of the tilting adjustment arm, drive wheels installed at both ends inside the strip-shaped tilting frame, and end support rods for controlling the strip-shaped tilting frame.

[0011] The internal adjustment ring has a plurality of arc-shaped storage grooves inside. The centrifugal adjustment arm is hinged to an arc-shaped flip arm at one end inside the arc-shaped storage groove and an internal spring plate installed on the inner wall of the arc-shaped storage groove. The internal spring plate is inserted into the squeezing frame inside the arc-shaped flip arm to control the squeezing frame to elastically squeeze and reset inward.

[0012] The multi-directional optical inspection mechanism is fixed to the mounting cover at the end of the arc-shaped flip arm and the embedded optical inspection probe is fixed to the side wall of the mounting cover.

[0013] An end drive wheel is installed at the end of the mounting cover.

[0014] A side-mounted conduit is fixedly installed at the center of the internal support frame.

[0015] The beneficial effects of this invention are: (1) The present invention can be adapted to stainless steel corrugated pipes of different diameters by adjusting the angle of the electrically controlled flipping arm and the centrifugal adjusting arm, without the need to replace the detection device, thus reducing the equipment investment cost. (2) The electrically controlled walking wheel group hinged at the end is flipped and pressed against the inner wall of the stainless steel corrugated pipe by the electrically controlled flipping arm, so that the multi-directional optical detection mechanism always stays in the center position of the corrugated pipe, avoiding false detection and missed detection caused by the probe sticking to the wall, and the detection accuracy is greatly improved.

[0016] (3) The electrically controlled walking wheel set, in conjunction with the end transmission wheel, can drive the module to move on its own inside the pipe, realizing continuous detection of long-distance corrugated pipes, greatly improving detection efficiency, and can be applied to corrugated pipes of different lengths.

[0017] (4) The electrically controlled rotating frame drives the multi-directional optical detection mechanism to rotate around the ring main frame. In conjunction with the embedded optical detection probe, it flips outward and elastically resets under centrifugal force, which can realize the adjustment of the detection range at different speeds, so that it can have the function of scanning the inner wall without dead angles.

[0018] (5) No manual insertion into the pipe is required throughout the process, reducing the labor intensity of operators and safety risks such as radiation and high pressure. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the electrically controlled tilting arm and the electrically controlled walking wheel assembly in this invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of the electrically controlled rotating frame and the centrifugal adjusting arm in this invention.

[0023] In the diagram: 1. Circular main frame; 11. External adjustment groove; 12. Arc-shaped control port; 13. Internal support frame; 14. Side-mounted wire conduit; 2. Electrically controlled tilting arm; 21. Tilting adjustment arm; 22. Tilting adjustment strut; 3. Electrically controlled walking wheel set; 31. Strip-shaped tilting frame; 32. Drive wheel; 33. End strut; 4. Electrically controlled rotating frame; 41. Internal adjustment ring; 411. Arc-shaped storage groove; 42. Adjustment motor; 43. Transmission gear; 5. Centrifugal adjustment arm; 51. Arc-shaped tilting arm; 52. Internal spring; 53. Extrusion frame; 6. Multi-directional optical inspection mechanism; 61. Mounting cover; 62. Embedded optical inspection probe; 63. End transmission wheel. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figures 1 to 3 The self-adjusting module shown is used for the inspection of stainless steel bellows. It includes a ring-shaped main frame 1, which is made of high-strength aluminum alloy, making it lightweight and corrosion-resistant. An internal support frame 13 is welded and fixed inside the ring-shaped main frame 1. An external adjustment groove 11 is opened on the outer arc-shaped surface. Three arc-shaped control ports 12 are evenly distributed on the inner side of the external adjustment groove 11 to limit the rotation angle of the internal adjustment ring 41.

[0027] The electrically controlled tilting arm 2 is hinged inside the internal support frame 13 and includes a tilting adjustment arm 21 and a tilting adjustment strut 22. The tilting adjustment strut 22 is an electric push rod, with its two ends hinged to the internal support frame 13 and the tilting adjustment arm 21, respectively, which can drive the tilting adjustment arm 21 to tilt from 0° to 45°. The electrically controlled traveling wheel set 3 is hinged to the end of the tilting adjustment arm 21 and includes a strip-shaped tilting frame 31, a drive wheel 32, and an end strut 33. The drive wheel 32 is made of rubber with anti-slip texture. The end strut 33 adjusts the angle of the strip-shaped tilting frame 31 so that the drive wheel 32 is close to the inner wall of the corrugated pipe.

[0028] An electrically controlled rotating frame 4 is fitted onto the outside of the annular main frame 1. An internal adjusting ring 41 is slidably inserted into the external adjusting groove 11. The inner side is provided with an annular toothed groove, which meshes with the transmission gear 43 on the output shaft of the adjusting motor 42. The adjusting motor 42 drives the internal adjusting ring 41 to rotate around the annular main frame 1. Four arc-shaped storage grooves 411 are evenly distributed on the outer side of the internal adjusting ring 41. The centrifugal adjusting arm 5 is hinged in the groove. The internal spring sheet 52 is made of spring steel and is inserted into the extrusion frame 53. Through elastic extrusion, the arc-shaped flipping arm 51 is kept in an outward opening trend to ensure that the module is centered.

[0029] The multi-directional optical inspection mechanism 6 is fixed to the end of the arc-shaped flip arm 51. The mounting cover 61 is a waterproof and dustproof structure, with four embedded optical inspection probes 62 evenly embedded in its side wall, enabling 360° scanning. The end drive wheel 63 at the end of the mounting cover 61 is a universal wheel structure to assist in the movement of the module. The side-mounted conduit 14 in the center of the internal support frame 13 is used to run power lines and signal lines to transmit data from the embedded optical inspection probes to the outside.

[0030] Work process According to the pipe diameter parameters of the stainless steel corrugated pipe to be tested, the staff started the flip adjustment support rod 22 through the electronic control system, adjusted the angle of the flip adjustment arm 21, and then started the end support rod 33 to adjust the contact angle of the drive wheel 32 so that the contact pressure between the drive wheel 32 and the inner wall of the corrugated pipe is appropriate.

[0031] Start the adjustment motor 42 to test the rotational flexibility of the internal adjustment ring 41 and ensure that the multi-directional optical inspection mechanism 6 can rotate 360°; at the same time, start the embedded optical inspection probe 62 to perform image calibration and ensure that the inspection image is clear.

[0032] Place the debugged module at the opening of the stainless steel corrugated pipe, start the drive wheel 32, the drive wheel 32 rotates and drives the module to slowly enter the pipe, the end transmission wheel 63 rolls against the pipe wall, and the module moves smoothly.

[0033] When positioned at the small diameter of the stainless steel corrugated pipe, the internal adjusting ring 41 rotates slowly; when positioned at the large diameter, the internal adjusting ring 41 rotates quickly. Under the centrifugal force generated by the rotation of the internal adjusting ring 41, the centrifugal adjusting arm 5 flips outward, extending the multi-directional optical inspection mechanism 6 outward. This allows the opening angle to be adaptively adjusted according to the pipe diameter change. The embedded optical inspection probe 62 performs a 360° scan of the inner wall of the corrugated pipe, acquiring real-time images and defect data, which are then transmitted to an external terminal via the signal line within the side-mounted conduit 14. Simultaneously, the multi-directional optical inspection mechanism 6 is kept centered to prevent damage caused by collision between the probe and the pipe wall.

[0034] If the embedded optical inspection probe 62 detects defects such as cracks, pits, or corrosion on the inner wall, the external terminal will automatically mark the location and size of the defects for easy subsequent processing.

[0035] For long-distance corrugated pipes, the module can move continuously for detection without manual intervention until it reaches the other end of the corrugated pipe.

[0036] After the inspection is completed, the control module of the electronic control system exits from the other end of the bellows. Alternatively, it can exit from the original inlet. During the resetting and exiting process, the multi-directional optical inspection mechanism 6 can scan again to verify the defect location.

[0037] After the module is completely withdrawn, the drive wheel 32 and the regulating motor 42 are turned off. The centrifugal regulating arm 5 is reset under the action of the internal spring 52. The embedded optical detection probe 62 stops working, and the equipment enters standby mode, waiting for the next detection.

[0038] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-propelled adjustment module for detecting stainless steel bellows, comprising a ring-shaped main frame (1), characterized in that: The annular main frame (1) is internally hinged with an electrically controlled tilting arm (2) for adjusting the angle of the walking wheel set. The end of the electrically controlled tilting arm (2) is hinged with an electrically controlled walking wheel set (3) for self-movement inside the pipe. An electrically controlled rotating frame (4) for driving the detection mechanism to rotate is movably mounted on the outer arc surface of the annular main frame (1). A centrifugal adjusting arm (5) is elastically mounted on the outer arc surface of the electrically controlled rotating frame (4). A multi-directional optical detection mechanism (6) for detecting the inner wall of the corrugated pipe is installed at the end of the centrifugal adjusting arm (5).

2. The self-propelled adjustment module for detecting stainless steel corrugated pipes according to claim 1, characterized in that: An external adjustment groove (11) is provided on the outer arc surface of the annular main frame (1), and a plurality of arc-shaped control ports (12) are provided on the inner arc surface of the external adjustment groove (11) evenly distributed along the circumference.

3. The self-propelled adjustment module for stainless steel bellows inspection according to claim 2, characterized in that: The electrically controlled rotating frame (4) includes an internal adjusting ring (41) that is slidably inserted into the outer adjusting groove (11), an adjusting motor (42) fixed on the inner wall of the annular main frame (1), and a transmission gear (43) that meshes with the annular tooth groove on the inner side of the internal adjusting ring (41). The transmission gear (43) is axially fixed on the lateral adjusting shaft of the adjusting motor (42). The adjusting motor (42) drives the internal adjusting ring (41) to rotate along the outer adjusting groove (11) by driving the transmission gear (43).

4. The self-propelled adjustment module for detecting stainless steel bellows according to claim 1, characterized in that: The annular main frame (1) has an internal support frame (13) fixed inside for support and wiring.

5. The self-propelled adjustment module for stainless steel bellows inspection according to claim 4, characterized in that: The electrically controlled tilting arm (2) includes a tilting adjustment arm (21) hinged inside the internal support frame (13) and a tilting adjustment strut (22) hinged at both ends to the internal support frame (13) and the tilting adjustment arm (21), respectively. The tilting adjustment strut (22) is an electric push rod used to adjust the tilting angle of the tilting adjustment arm (21).

6. The self-propelled adjustment module for detecting stainless steel corrugated pipes according to claim 5, characterized in that: The electrically controlled walking wheel set (3) includes a strip-shaped flip frame (31) hinged to the end of the flip adjustment arm (21), drive wheels (32) installed inside the strip-shaped flip frame (31) at both ends, and end support rods (33) hinged to the flip adjustment arm (21) and the strip-shaped flip frame (31) at both ends respectively. The end support rods (33) are electric push rods used to adjust the contact angle of the drive wheels (32).

7. The self-propelled adjustment module for stainless steel bellows inspection according to claim 3, characterized in that: The inner adjusting ring (41) has a plurality of arc-shaped storage grooves (411) evenly distributed along the circumference on its outer arc-shaped surface. The centrifugal adjusting arm (5) includes an arc-shaped flip arm (51) hinged inside the arc-shaped storage groove (411) and an internal spring piece (52) installed on the inner wall of the arc-shaped storage groove (411). The internal spring piece (52) is inserted into the squeezing frame (53) inside the arc-shaped flip arm (51) and the arc-shaped flip arm (51) is controlled to return to its original position by elastic squeezing.

8. The self-propelled adjustment module for detecting stainless steel bellows according to claim 7, characterized in that: The multi-directional optical inspection mechanism (6) includes a mounting cover (61) fixed to the end of the arc-shaped flip arm (51) and a plurality of embedded optical inspection probes (62) uniformly embedded on the side wall of the mounting cover (61). The embedded optical inspection probes (62) are used to scan the inner wall defects of the bellows in 360°.

9. The self-propelled adjustment module for detecting stainless steel bellows according to claim 8, characterized in that: The end of the mounting cover (61) away from the arc-shaped flip arm (51) is equipped with an end drive wheel (63) to assist the module in moving inside the tube.

10. The self-propelled adjustment module for detecting stainless steel bellows according to claim 4, characterized in that: The internal support frame (13) is fixedly equipped with a side-mounted conduit (14) at its center, which is used to run the power lines and signal lines of the detection mechanism and drive components.

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