Steel plant pressure pipeline detection device

Abstract

The invention discloses a steel plant pressure pipeline detection device, and relates to the technical field of pipeline detection, the steel plant pressure pipeline detection device comprises an axial walking mechanism, a radial rotating mechanism and a connecting assembly, the radial rotating mechanism comprises a second upper arc frame and a second lower arc frame which are buckled on a pressure pipeline, a limiting groove is internally provided with a rotating assembly, and the rotating assembly is driven by a rotating motor. Through the arranged axial walking mechanism, a plurality of gear motors synchronously drive a plurality of walking rollers to synchronously rotate, the walking rollers synchronously rotate to drive the whole axial walking mechanism to move in the axial direction of the pressure pipeline, and the axial walking mechanism and the radial rotating mechanism are connected through an arranged semicircular cylinder; therefore, the radial rotating mechanism is driven to move synchronously when the axial walking mechanism moves, meanwhile, the rotating assembly in the radial rotating mechanism can drive the detection module to rotate by 360 degrees in the radial direction of the pressure pipeline, full-coverage detection of the surface of the pressure pipeline is achieved, manual adjustment is not needed, and therefore the detection efficiency of the pressure pipeline is improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, and in particular to a pressure pipeline inspection device for steel plants. Background Technology

[0002] As the core component for transporting high-temperature molten media (molten steel, molten iron), high-pressure steam, and corrosive gases, pressure pipelines in steel plants operate under extreme conditions for extended periods, including temperatures exceeding 400°C, pressures exceeding 10 MPa, high dust levels, and strong vibrations. They also face multiple risks of damage, such as media erosion and corrosion, thermal fatigue stress, and aging of welded joints, making them prone to safety hazards like wall thinning, internal cracks, surface corrosion, and weld defects. Pipeline failure and leakage can trigger major safety accidents such as explosions and fires, causing enormous economic losses and casualties. Therefore, regular and accurate inspection of pressure pipelines is a crucial step in ensuring safe production in steel plants.

[0003] The existing pressure pipeline testing equipment and related technologies in steel plants have the following prominent problems: 1. Most existing devices only have unidirectional axial movement capabilities and lack 360° circumferential rotation capability, resulting in blind spots in circumferential pipeline inspection. Manual adjustment of the device position is required to achieve full coverage inspection, which is inefficient.

[0004] 2. Existing detection devices mostly rely on a single ultrasonic probe, which can only detect wall thinning and internal cracks, and cannot take into account multiple types of defects such as pipe surface corrosion, weld defects, and local high temperature anomalies.

[0005] In view of this, the present invention is proposed to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a pressure pipeline inspection device for steel plants, so as to solve the technical problem that existing pressure pipeline inspection devices have blind spots when inspecting the circumferential direction of the pipeline.

[0007] The purpose of this invention is to provide a pressure pipeline testing device for steel plants, comprising: An axial traveling mechanism includes a first upper arc frame and a first lower arc frame that are fastened to a pressure pipe. Multiple rotatable traveling rollers are provided on the inner side of both the first upper arc frame and the first lower arc frame. The traveling rollers are in contact with the surface of the pressure pipe, and the axis of the traveling rollers is perpendicular to the axis of the pressure pipe. The traveling rollers are driven by a geared motor. A radial rotation mechanism includes a second upper arc frame and a second lower arc frame that are fastened to a pressure pipeline. Limit grooves are provided on the inner sides of both the second upper arc frame and the second lower arc frame. A rotation component is provided in the limit groove. The rotation component is driven by a rotation motor. The connecting assembly includes two interlocking semi-circular cylinders to form an annular connecting cylinder, the two ends of which are fixedly connected to an axial traveling mechanism and a radial rotating mechanism, respectively.

[0008] Furthermore, both the first upper arc frame and the first lower arc frame have U-shaped cavities on their inner sides. Multiple mounting brackets corresponding to the traveling rollers are provided inside the U-shaped cavities, and the traveling rollers are rotatably mounted on the mounting brackets. An electric actuator is installed inside the U-shaped cavity, and the output end of the electric actuator is connected to the side of the mounting bracket away from the traveling roller.

[0009] Furthermore, there is a sliding gap between the output end of the electric actuator and the mounting bracket, and a compression spring is installed in the sliding gap, which is fitted onto the output end of the electric actuator.

[0010] Furthermore, an encoder is installed inside the U-shaped cavity, and the output end of the encoder is connected to the central shaft of any of the traveling rollers.

[0011] Furthermore, an angle sensor is also installed inside the U-shaped cavity.

[0012] Furthermore, the rotating assembly includes two semi-circular ring plates, which are detachably mounted in the limiting groove. The two semi-circular ring plates can be connected by snap-fit ​​to form a ring frame. The outer surface of the ring frame is uniformly provided with ring racks along its circumference. A drive gear meshes on the ring rack. The drive gear extends out of the second upper arc frame or the second lower arc frame and is mounted on the outer wall of the second upper arc frame or the second lower arc frame through a support. The drive gear is driven by a drive motor.

[0013] Furthermore, multiple detection modules are evenly arranged inside the ring frame. Each detection module integrates an ultrasonic probe, an electromagnetic induction probe, and an infrared thermal imaging probe. The ultrasonic probe, electromagnetic induction probe, and infrared thermal imaging probe are all mounted inside the ring frame via mounting bases.

[0014] Furthermore, a controller is installed on the first upper arc frame, and the controller is electrically connected to the geared motor, the rotary motor, the electric push rod, the encoder, the tilt sensor, the drive motor, the ultrasonic probe, the electromagnetic induction probe, and the infrared thermal imaging probe.

[0015] Furthermore, the first upper arc frame, the first lower arc frame, the second upper arc frame, and the second lower arc frame are all provided with heat dissipation holes through their thickness direction.

[0016] Furthermore, multiple cooling fans are installed inside the first upper arc frame, the first lower arc frame, the second upper arc frame, and the second lower arc frame. These multiple cooling fans are used to dissipate the heat inside the first upper arc frame, the first lower arc frame, the second upper arc frame, and the second lower arc frame through heat dissipation holes.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects: The axial travel mechanism enables multiple geared motors to synchronously drive multiple traveling rollers to rotate synchronously. The synchronous rotation of the multiple traveling rollers drives the entire axial travel mechanism to move along the axial direction of the pressure pipeline. The axial travel mechanism and the radial rotation mechanism are connected by a semi-circular cylinder, so that the movement of the axial travel mechanism drives the radial rotation mechanism to move synchronously. At the same time, the rotating component in the radial rotation mechanism can drive the detection module to rotate 360° radially along the pressure pipeline, achieving full coverage detection of the pressure pipeline surface without manual adjustment, thereby improving the detection efficiency of the pressure pipeline. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 An installation diagram of a steel plant pressure pipeline inspection device provided in an embodiment of this application; Figure 2 A schematic diagram of the structure of the pressure pipeline detection device for steel plants provided in the embodiments of this application; Figure 3 A cross-sectional view of the radial travel mechanism of the steel plant pressure pipeline inspection device provided in the embodiment of this application; Figure 4 A cross-sectional view of the axial rotation mechanism of the steel plant pressure pipeline inspection device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the internal structure of the axial rotation mechanism of the pressure pipeline detection device for steel plants provided in the embodiments of this application.

[0019] Reference numerals: 1. Pressure pipe; 2. Axial travel mechanism; 3. Radial rotation mechanism; 4. Semi-circular cylinder; 5. Controller; 6. Heat dissipation hole; 7. Encoder; 8. Tilt sensor; 9. Detection module; 21. First upper arc frame; 22. First lower arc frame; 23. Mounting bracket; 24. Traveling roller; 25. Gear motor; 26. First locking bolt; 27. Electric push rod; 28. Compression spring; 31. Second upper arc frame; 32. Second lower arc frame; 33. Limiting groove; 34. Ring rack; 35. Drive gear; 36. Drive motor; 37. Second locking bolt.

[0020] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

[0022] See Figures 1 to 5 As shown in the embodiment of this application, a pressure pipeline inspection device for a steel plant is provided, including: an axial traveling mechanism 2, a radial rotating mechanism 3, and a connecting assembly. The axial traveling mechanism 2 includes a first upper arc frame 21 and a first lower arc frame 22 fastened to the pressure pipeline 1. The inner sides of the first upper arc frame 21 and the first lower arc frame 22 are provided with a plurality of rotatable traveling rollers 24. The traveling rollers 24 are in contact with the surface of the pressure pipeline 1, and the axis of the traveling rollers 24 is perpendicular to the axis of the pressure pipeline 1. The traveling rollers 24 are driven by a reduction motor 25. The radial rotating mechanism 3 includes a second upper arc frame 31 and a second lower arc frame 32 fastened to the pressure pipeline 1. The inner sides of the second upper arc frame 31 and the second lower arc frame 32 are provided with limit grooves 33. A rotating assembly is provided in the limit grooves 33. The rotating assembly is driven by a rotating motor 36. The connecting assembly includes two interlocking semi-circular cylinders 4 to form an annular connecting cylinder. The two ends of the annular connecting cylinder are fixedly connected to the axial traveling mechanism 2 and the radial rotating mechanism 3, respectively.

[0023] It should be noted that the two ends of the upper semi-circular cylinder 4 are fixedly connected to the first upper arc frame 21 and the second upper arc frame 31, and the two ends of the lower semi-circular cylinder 4 are fixedly connected to the first lower arc frame 22 and the second lower arc frame 32, thereby connecting the axial walking mechanism 2 and the radial rotating mechanism 3 into a whole, so that the axial walking mechanism 2 can drive the radial rotating mechanism 3 to move when it moves axially along the pressure pipe 1; the outer surface of the walking roller 24 has an annular groove, so that the walking roller 24 fits against the outer circle of the pressure pipe 1, increasing the friction between the two, avoiding slippage under high temperature, and ensuring smooth walking; the detection module 9 is installed on the rotating assembly; the outer ring of the walking roller 24 is wrapped with high temperature resistant rubber.

[0024] In the above scheme, the axial traveling mechanism 2 enables multiple reduction motors 25 to synchronously drive multiple traveling rollers 24 to rotate synchronously. The synchronous rotation of the multiple traveling rollers 24 drives the axial traveling mechanism 2 to move along the axial direction of the pressure pipe 1. The semi-circular cylinder 4 connects the axial traveling mechanism 2 and the radial rotating mechanism 3, so that when the axial traveling mechanism 2 moves, it drives the radial rotating mechanism 3 to move synchronously. At the same time, the rotating component in the radial rotating mechanism 3 can drive the detection module 9 to rotate 360° radially along the pressure pipe 1, realizing full coverage detection of the surface of the pressure pipe 1 without manual adjustment, thereby improving the detection efficiency of the pressure pipe 1.

[0025] See some possible implementations. Figure 2 and Figure 3 As shown, both the first upper arc frame 21 and the first lower arc frame 22 have U-shaped cavities on their inner sides. Multiple mounting brackets 23 corresponding to the traveling rollers 24 are provided in the U-shaped cavities. The traveling rollers 24 are rotatably mounted on the mounting brackets 23. An electric push rod 27 is provided in the U-shaped cavity. The output end of the electric push rod 27 is connected to the side of the mounting bracket 23 away from the traveling rollers 24. The surface of the traveling rollers 24 is machined with serrated anti-slip texture to increase the gripping force with the surface of the pressure pipe 1 and avoid slippage at high temperatures. Both ends of the first upper arc frame 21 and the first lower arc frame 22 have connecting ears. The connecting ears at both ends are fixedly connected by the first locking bolt 26 and the matching first locking nut.

[0026] In the above scheme, when installing the axial travel mechanism 2, the first upper arc frame 21 and the first lower arc frame 22 are opened by the first locking bolt 26 and the first locking nut, and the first upper arc frame 21 and the first lower arc frame 22 are fastened to the outer circumference of the pressure pipe 1. Then, the first upper arc frame 21 and the first lower arc frame 22 are locked again by the first locking bolt 26 and the first locking nut. At this time, according to the diameter of the pressure pipe 1, the electric push rod 27 is started. The start of the electric push rod 27 drives the mounting bracket 23 to move towards the pressure pipe 1 through its output end, so that the multiple traveling rollers 24 are respectively pressed against the outer circumference of the pressure pipe 1. Then, the electric push rod 27 is closed.

[0027] See some possible implementations. Figure 2 and Figure 3 As shown, there is a sliding gap between the output end of the electric actuator 27 and the mounting bracket 23, and a compression spring 28 is provided in the sliding gap. The compression spring 28 is fitted on the output end of the electric actuator 27.

[0028] In the above scheme, if the surface of the pressure pipe 1 is uneven or has protrusions, it will affect the stability of the detection during the movement. By setting the compression spring 28, when encountering unevenness or protrusions during movement, the compression spring 28 will be compressed or unfolded, so that the mounting bracket 23 drives the walking roller 24 to slide along the sliding gap, thereby absorbing the vibration caused by the unevenness of the pressure pipe 1 surface and improving the stability of the detection.

[0029] See some possible implementations. Figure 3 As shown, an encoder 7 is installed inside the U-shaped cavity, and the output end of the encoder 7 is connected to the central shaft of any of the traveling rollers 24.

[0030] In the above scheme, when the walking roller 24 moves, it drives the output shaft of the encoder 7 to rotate, converting the displacement into an electrical signal to achieve accurate positioning of the detection position, which facilitates the subsequent tracing of the defect location.

[0031] See some possible implementations. Figure 3 As shown, an inclination sensor 8 is also provided inside the U-shaped cavity. The inclination sensor 8 is used to monitor the horizontal state of the detection device provided in this application embodiment in real time. When the inclination angle of the detection device exceeds the set value (3°) due to the tilt of the pressure pipeline 1 or the installation deviation, an alarm signal is sent to the control system to remind the staff to adjust it and avoid missed detection or misjudgment due to the angle deviation of the probe of the detection module 9.

[0032] See some possible implementations. Figure 2 , Figure 4 and Figure 5 As shown, the rotating assembly includes two semi-circular ring plates, which are detachably mounted in the limiting groove 33. The two semi-circular ring plates can be connected by snap fasteners to form an annular frame. The outer surface of the annular frame is uniformly provided with annular racks 34 along its circumference. A drive gear 35 meshes on the annular racks 34. The drive gear 35 extends out of the second upper arc frame 31 or the second lower arc frame 32 and is mounted on the outer wall of the second upper arc frame 31 or the second lower arc frame 32 by a support. The drive gear 35 is driven by a drive motor 36.

[0033] It should be noted that both ends of the second upper arc frame 31 and the second lower arc frame 32 have connecting ears, and both ends of the connecting ears are fixedly connected by the second locking bolt 37 and the matching second locking nut; when the second upper arc frame 31 and the second lower arc frame 32 are fastened to the outer surface of the pressure pipeline 1, the two limiting grooves 33 merge into a ring groove, and the ring frame can rotate in the ring groove.

[0034] In the above scheme, while the traveling roller 24 moves and drives the radial rotation mechanism 3 to move synchronously, the drive motor 36 is started by controlling it. The drive motor 36 drives the drive gear 35 to rotate through its output end. The drive gear 35 rotates and meshes with the ring rack 34, thereby driving the ring frame to rotate in the ring groove, and then driving multiple detection modules 9 to rotate 360°. Combined with the axial movement of the traveling roller 24, the surface of the pressure pipeline 1 is fully covered for detection.

[0035] See some possible implementations. Figure 4 and Figure 5 As shown, multiple detection modules 9 are evenly arranged inside the annular frame. Each detection module 9 integrates an ultrasonic probe, an electromagnetic induction probe, and an infrared thermal imaging probe. The ultrasonic probe, electromagnetic induction probe, and infrared thermal imaging probe are all mounted inside the annular frame via mounting bases.

[0036] In the above scheme, the ultrasonic probe frequency is adjustable from 5 to 10 MHz and is used to detect the wall thickness and internal cracks of the pressure pipeline 1 (minimum detectable crack length ≥ 2 mm, wall thickness error ≤ ± 0.05 mm); the electromagnetic induction probe is used to detect surface corrosion and weld defects of the pressure pipeline 1; the infrared thermal imaging probe is used to monitor the surface temperature distribution of the pressure pipeline 1 in real time, avoiding the blind spots of a single detection method.

[0037] See some possible implementations. Figure 1 and Figure 2 As shown, a controller 5 (control system) is installed on the first upper arc frame 21. The controller 5 is electrically connected to the reduction motor 25, the rotary motor 36, the electric push rod 27, the encoder 7, the tilt sensor 8, the drive motor 36, the ultrasonic probe, the electromagnetic induction probe, and the infrared thermal imaging probe. The controller 5 integrates a 5G+LoRa dual-mode wireless transmission module, an audible and visual alarm, and has a built-in data fusion algorithm chip. The controller 5 fuses multimodal detection data in real time, automatically identifies the defect type (crack, corrosion, wall thickness reduction) and classifies it (level 1-4), with a response time ≤0.5s. The dual-mode wireless transmission module penetrates the complex electromagnetic environment of the steel plant to realize remote monitoring and command issuance. The audible and visual alarm will alarm the staff when a serious defect (level 3-4) is detected.

[0038] See some possible implementations. Figure 1 and Figure 2 As shown, the first upper arc frame 21, the first lower arc frame 22, the second upper arc frame 31 and the second lower arc frame 32 are all provided with heat dissipation holes 6 through them along their thickness direction. When the traveling roller 24 moves, the heat dissipation holes 6 can easily dissipate the internal heat and reduce the internal temperature of the detection device.

[0039] In some possible implementations, multiple cooling fans (not shown in the figure) are provided inside the first upper arc frame 21, the first lower arc frame 22, the second upper arc frame 31, and the second lower arc frame 32. The multiple cooling fans are used to exhaust the heat inside the first upper arc frame 21, the first lower arc frame 22, the second upper arc frame 31, and the second lower arc frame 32 through the heat dissipation holes 6. The cooling fans are electrically connected to the controller 5. The cooling fans start when the traveling rollers 24 rotate.

[0040] In the above scheme, the cooling fan is activated by control, and the heat inside the detection device is discharged through the heat dissipation hole 6, which further improves the heat dissipation and heat exchange efficiency of the heat dissipation hole 6 and controls the internal temperature of the detection device below 80°C. The geared motor 25, the rotating motor 36, the ultrasonic probe, the electromagnetic induction probe and the infrared thermal imaging probe are all cooled synchronously by the water cooling mechanism in the prior art. The specific structure of the water cooling mechanism will not be described in detail in this application embodiment.

[0041] This specific embodiment is merely an explanation of the invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of protection of this invention, they are protected by patent law.

Claims

1. A pressure pipeline testing device for a steel plant, characterized in that, include: The axial traveling mechanism (2) includes a first upper arc frame (21) and a first lower arc frame (22) fastened to the pressure pipe (1). The inner sides of the first upper arc frame (21) and the first lower arc frame (22) are provided with a plurality of rotatable traveling rollers (24). The traveling rollers (24) are in contact with the surface of the pressure pipe (1). The axis of the traveling rollers (24) is perpendicular to the axis of the pressure pipe (1). The traveling rollers (24) are driven by a reduction motor (25). The radial rotation mechanism (3) includes a second upper arc frame (31) and a second lower arc frame (32) fastened to the pressure pipe (1). The inner sides of the second upper arc frame (31) and the second lower arc frame (32) are provided with limit grooves (33). A rotation component is provided in the limit groove (33). The rotation component is driven by a rotation motor (36). The connecting assembly includes two interlocking semi-circular cylinders (4) to form an annular connecting cylinder, the two ends of which are fixedly connected to an axial traveling mechanism (2) and a radial rotating mechanism (3), respectively.

2. The pressure pipeline testing device for steel plants according to claim 1, characterized in that, The first upper arc frame (21) and the first lower arc frame (22) both have U-shaped cavities on their inner sides. Multiple mounting brackets (23) corresponding to the walking rollers (24) are provided in the U-shaped cavities. The walking rollers (24) are rotatably mounted on the mounting brackets (23). An electric actuator (27) is provided inside the U-shaped cavity, and the output end of the electric actuator (27) is connected to the side of the mounting bracket (23) away from the walking roller (24).

3. The pressure pipeline testing device for steel plants according to claim 2, characterized in that, There is a sliding gap between the output end of the electric actuator (27) and the mounting bracket (23), and a compression spring (28) is provided in the sliding gap. The compression spring (28) is fitted on the output end of the electric actuator (27).

4. The pressure pipeline testing device for steel plants according to claim 2, characterized in that, An encoder (7) is provided inside the U-shaped cavity, and the output end of the encoder (7) is connected to the central shaft of any of the walking rollers (24).

5. The pressure pipeline testing device for steel plants according to claim 4, characterized in that, An angle sensor (8) is also installed inside the U-shaped cavity.

6. The pressure pipeline testing device for steel plants according to claim 1, characterized in that, The rotating assembly includes two semi-circular ring plates, which are detachably mounted in the limiting groove (33). The two semi-circular ring plates can be connected by snap fasteners to form a ring frame. The outer surface of the annular frame is uniformly provided with annular racks (34) along its circumference. A drive gear (35) meshes on the annular racks (34). The drive gear (35) extends out of the second upper arc frame (31) or the second lower arc frame (32) and is mounted on the outer wall of the second upper arc frame (31) or the second lower arc frame (32) by a support. The drive gear (35) is driven by a drive motor (36).

7. The pressure pipeline testing device for steel plants according to claim 6, characterized in that, Multiple detection modules (9) are evenly arranged on the inner side of the ring frame. Each detection module (9) integrates an ultrasonic probe, an electromagnetic induction probe, and an infrared thermal imaging probe. The ultrasonic probe, electromagnetic induction probe, and infrared thermal imaging probe are all installed on the inner side of the ring frame through mounting bases.

8. The pressure pipeline testing device for steel plants according to claim 7, characterized in that, The first upper arc frame (21) is equipped with a controller (5), which is electrically connected to the geared motor (25), the rotary motor (36), the electric push rod (27), the encoder (7), the tilt sensor (8), the drive motor (36), the ultrasonic probe, the electromagnetic induction probe and the infrared thermal imaging probe respectively.

9. The pressure pipeline testing device for steel plants according to claim 8, characterized in that, The first upper arc frame (21), the first lower arc frame (22), the second upper arc frame (31), and the second lower arc frame (32) are all provided with heat dissipation holes (6) through their thickness direction.

10. The pressure pipeline testing device for steel plants according to claim 9, characterized in that, Multiple cooling fans are provided inside the first upper arc frame (21), the first lower arc frame (22), the second upper arc frame (31), and the second lower arc frame (32). The multiple cooling fans are used to discharge the heat inside the first upper arc frame (21), the first lower arc frame (22), the second upper arc frame (31), and the second lower arc frame (32) through the heat dissipation holes (6).

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