A heat pipe flaw detection device

Abstract

The utility model provides a kind of heating pipeline flaw detection device, it is related to heating pipeline flaw detection technical field, including device ontology, the drive mechanism is installed on the surface of device ontology, the drive mechanism inside includes sleeve, the sleeve bottom end is fixed with the outside surface of device ontology, the sleeve inside slidingly connected is limit stop, the limit stop top surface is equipped with adjusting lever, the adjusting lever top end is equipped with universal wheel penetrating the sleeve top surface installation, the utility model is equipped with sleeve, limit stop, adjusting lever, universal wheel, spring and traction rope cooperation by the drive mechanism, the flexible adjustment of universal wheel support spacing is realized.Pipeline detection, spring pushes limit stop and drives adjusting lever to extend, so that universal wheel closely adheres to the inner wall of pipeline, adapts different inner diameter heating pipeline;Pull handle is tightened limit stop by traction rope, and universal wheel position can be quickly adjusted, without being equipped with special device for different specifications pipeline, greatly reduce detection cost and equipment storage pressure.

Description

Technical Field

[0001] This utility model relates to the field of thermal pipeline flaw detection technology, and in particular to a thermal pipeline flaw detection device. Background Technology

[0002] As a key component in energy transmission and industrial production, the defects in the inner wall of thermal pipelines (such as corrosion and cracks) directly affect the safety of transmission and the service life of the pipeline. Therefore, efficient and accurate flaw detection is the core link of pipeline maintenance.

[0003] Among existing thermal pipeline flaw detection technologies, the utility model patent (application number 202222453198.7) with authorization announcement number CN218545632U discloses a pipeline inner wall flaw detection device, which adopts a structural design of mounting flaw detection components on a fixed bracket; another example is the pipeline flaw detection equipment related technology with application number 202320126789.4, which realizes the installation and fixation of flaw detection components through a rigid support structure. The aforementioned existing technologies have significant shortcomings: First, they have extremely poor adaptability. The support structures of existing equipment are mostly designed with fixed dimensions, which cannot be flexibly adjusted according to changes in the inner diameter of the thermal pipeline. Special flaw detection devices are required for pipelines of different specifications, which increases the detection cost and equipment storage pressure. Second, they lack operational flexibility. When the fixed support structure moves inside the pipeline, it is easily affected by the inner diameter deviation, resulting in the flaw detection components not fitting tightly against the inner wall of the pipeline, creating blind spots in the detection.

[0004] Therefore, it is necessary to provide a thermal pipeline flaw detection device to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a thermal pipeline flaw detection device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a thermal pipeline flaw detection device, including a device body. A drive mechanism is installed on the surface of the device body, and the drive mechanism includes a sleeve. The bottom end of the sleeve is fixedly connected to the outer surface of the device body. A limit plate is provided inside the sleeve, and the limit plate and the sleeve are in a sliding fit. An adjusting rod is installed on the top surface of the limit plate, and the top end of the adjusting rod passes through the top surface of the sleeve and is fitted with a universal wheel. A spring is installed on the bottom surface of the limit plate, and the bottom end of the spring is fixed to the bottom end of the sleeve. A traction rope is also fixed on the bottom surface of the limit plate. Multiple drive mechanisms are provided, and one end of each traction rope is fixedly connected to a handle. The spring can push the limit plate to move the adjusting rod up and down along the sleeve, thereby realizing the extension and retraction of the universal wheel. The traction rope can drive the limit plate to compress the spring through the pull of the handle, adjusting the support spacing of the universal wheel to adapt to different pipe inner walls. Multiple drive mechanisms work together to ensure stable movement of the device in the pipeline.

[0007] Preferably, a threaded connecting cylinder is installed on the end face of the device body, and the drive rod is threadedly connected to the threaded connecting cylinder. A threaded connector is installed at one end of the drive rod. The threaded connecting cylinder provides a mounting base for the drive rod, and the drive rod is securely connected to the threaded connecting cylinder through a threaded structure. The threaded connector allows the drive rod to dock with other compatible components, facilitating the expansion of the device's detection length and improving the device's flexibility of use.

[0008] Preferably, the top surface of the sleeve has a clearance hole that is compatible with the adjusting rod. The clearance hole provides guidance and limitation for the movement of the adjusting rod, ensuring that the adjusting rod extends and retracts smoothly in a fixed direction and preventing deviation from affecting the support effect of the caster wheel.

[0009] Preferably, a mounting base is installed on the surface of the device body, and the flaw detector assembly is mounted on the mounting base. The mounting base provides a stable mounting position for the flaw detector assembly, enabling the flaw detector assembly to stably conform to the detection direction of the inner wall of the pipeline, ensuring effective detection of defects in the inner wall of the pipeline.

[0010] Preferably, a light is installed at one end of the device body. The light, located at the end of the device body, illuminates the inner wall of the pipe after the device enters the pipe, providing a clear field of view for the flaw detector assembly's inspection operation and helping to improve the accuracy of the inspection.

[0011] Preferably, the limiting plate and the sleeve are mutually compatible. The compatibility structure between the limiting plate and the sleeve ensures that the limiting plate slides smoothly inside the sleeve, avoiding wobbling, while limiting the extension and contraction range of the spring, ensuring the stability when the adjusting rod drives the universal wheel for adjustment.

[0012] Preferably, the sleeve has a through hole on its circumferential side, which is compatible with the traction rope. The through hole provides a passage for the traction rope, allowing it to smoothly connect the limiting plate and the external handle, ensuring effective transmission of tension and enabling flexible control of the limiting plate.

[0013] The device is equipped with a controller and a battery, which are matched to each other. The battery provides power to all electrical components of the device, while the controller regulates the operating status of components such as the drive mechanism, flaw detector assembly, and lighting, enabling coordinated operation of all components and ensuring the orderly conduct of flaw detection operations. Compared with related technologies, the thermal pipeline flaw detection device provided by this utility model has the following beneficial effects: Compared with existing technologies, this thermal pipeline flaw detection device achieves flexible adjustment of the caster support spacing through the cooperation of a drive mechanism consisting of a sleeve, a limiting plate, an adjusting rod, casters, a spring, and a traction rope. During pipeline inspection, the spring pushes the limiting plate, causing the adjusting rod to extend and ensure the casters fit tightly against the inner wall of the pipeline, adapting to thermal pipelines of different inner diameters. Pulling the handle tightens the limiting plate via the traction rope, allowing for quick adjustment of the caster position. This eliminates the need for specialized devices for different pipeline specifications, significantly reducing inspection costs and equipment storage pressure. Simultaneously, it avoids the problem of loose fit caused by inner diameter deviations when the fixed support structure moves, reducing blind spots and improving inspection accuracy.

[0014] Compared with existing technologies, this thermal pipeline flaw detection device features a threaded connection between the threaded connecting sleeve on the end face of the device body and the drive rod. One end of the drive rod is equipped with a threaded connector, allowing for flexible expansion of the overall device length by connecting an extension rod or other adaptable components to meet the required length of the thermal pipeline to be inspected. This adapts the device to flaw detection operations on pipelines of varying lengths. The threaded connection method ensures convenient assembly and disassembly, and provides a secure connection, guaranteeing transmission stability between the drive rod, the device body, and the extension rod during inspection. This prevents loose connections from affecting the inspection operation, enhancing the flexibility and practicality of the device and broadening its application scenarios.

[0015] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0016] Figure 1 A schematic diagram of a thermal pipeline flaw detection device provided by this utility model; Figure 2 A schematic diagram of the threaded connecting cylinder structure of a thermal pipeline flaw detection device provided by this utility model; Figure 3 A schematic diagram of the handle structure of a thermal pipeline flaw detection device provided by this utility model; Figure 4 A schematic diagram of the sleeve structure of a thermal pipeline flaw detection device provided by this utility model; Figure 5 A schematic diagram of the spring structure of a thermal pipeline flaw detection device provided by this utility model.

[0017] Numbering on the map: 1. Device body; 2. Flaw detector assembly; 3. Mounting base; 4. Drive mechanism; 5. Lighting lamp; 6. Drive rod; 7. Traction rope; 8. Handle; 9. Adjusting rod; 10. Caster wheel; 11. Clearance hole; 12. Through hole; 13. Spring; 14. Limiting plate; 15. Sleeve; 16. Threaded connecting sleeve. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0019] Please refer to the following: Figure 1-5 A thermal pipeline flaw detection device includes a device body 1. A drive mechanism 4 is mounted on the surface of the device body 1. The drive mechanism 4 includes a sleeve 15. The bottom end of the sleeve 15 is fixedly connected to the outer surface of the device body 1. The sleeve 15 and the device body 1 are assembled first to form the installation base of the drive mechanism 4. A limit plate 14 is provided inside the sleeve 15. The limit plate 14 is inserted from the top of the sleeve 15 and forms a sliding fit with the inner wall of the sleeve 15, allowing the limit plate 14 to move smoothly along the axial direction of the sleeve 15. An adjusting rod 9 is fixedly mounted on the top surface of the limit plate 14. The top end of the adjusting rod 9 passes through the top surface of the sleeve 15 and is fixedly connected to a universal wheel 10, so that the movement of the adjusting rod 9 can directly drive the universal wheel 10 to extend and retract synchronously. A spring 13 is fixedly installed on the bottom surface of the limiting plate 14. The bottom end of the spring 13 is fixed to the bottom end of the sleeve 15 to form an elastic support structure. At the same time, a traction rope 7 is also fixed on the bottom surface of the limiting plate 14. A through hole 12 adapted to the traction rope 7 is opened on the circumferential side of the sleeve 15. The traction rope 7 passes through the through hole 12 and forms a sliding fit with the inner wall of the through hole 12. The through hole 12 provides a stable passage for the traction rope 7 and avoids excessive friction or entanglement when the traction rope 7 is pulled. Multiple drive mechanisms 4 are provided, with one end of each traction rope 7 converging and fixed to the handle 8. Mechanically, the spring 13 always applies an upward elastic force to the limiting plate 14, pushing the limiting plate 14 to extend the adjusting rod 9, so that the universal wheel 10 fits against the inner wall of the pipe. When the handle 8 is pulled, the tension generated by the traction rope 7 is efficiently transmitted to the limiting plate 14 through the through hole 12, causing the limiting plate 14 to compress the spring 13, and the adjusting rod 9 to retract, realizing the flexible adjustment of the support spacing of the universal wheel 10. Multiple drive mechanisms 4 are evenly distributed and work together along the circumference of the device body 1 to ensure that the device is subjected to balanced force when moving in the pipe, which not only solves the compatibility problem of pipes with different inner diameters, but also ensures the tight fit between the flaw detection component and the inner wall of the pipe, reducing the detection blind zone. Example

[0020] Please refer to the following: Figure 1-5 A threaded connecting cylinder 16 is fixedly installed on the end face of the device body 1. First, the threaded connecting cylinder 16 is assembled with the device body 1. Then, the drive rod 6 is screwed into the threaded connecting cylinder 16 via a threaded connection, achieving a stable connection and easy disassembly. A threaded connector is fixedly installed at the end of the drive rod 6 away from the threaded connecting cylinder 16. Mechanically, the threaded connector can be threadedly mated with an extension rod or other compatible components. The detachable and modular nature of the threaded connection allows for flexible expansion of the device's inspection length, addressing the inspection needs of pipes of different lengths and enhancing the device's flexibility and application range. Example

[0021] Please refer to the following: Figure 1-5 The top surface of the sleeve 15 is provided with a clearance hole 11. The structure of the clearance hole 11 is adapted to the adjusting rod 9. The adjusting rod 9 passes through the clearance hole 11 and forms a sliding fit with the inner wall of the clearance hole 11. The clearance hole 11 guides and limits the movement of the adjusting rod 9, preventing the adjusting rod 9 from deviating or shaking during the extension and retraction process. This ensures that the adjusting rod 9 always moves along the axial direction of the sleeve 15, thereby ensuring that the universal wheel 10 can extend and retract accurately, maintain a stable fit with the inner wall of the pipe, and ensure the stability and detection accuracy when the device moves. Example

[0022] Please refer to the following: Figure 1-5 The device body 1 has a mounting base 3 fixedly installed on its surface. First, the mounting base 3 is assembled with the device body 1. Then, the flaw detector assembly 2 is assembled on the mounting base 3 through a fixed connection. The mounting base 3 provides a stable support for the flaw detector assembly 2, so that the detection end of the flaw detector assembly 2 can always face the inner wall of the pipe and maintain a stable installation posture. This avoids the flaw detector assembly 2 from changing the detection angle due to vibration or collision during the movement of the device, thereby realizing the effective detection of defects in the inner wall of the pipe and ensuring the detection effect.

[0023] The flaw detector component 2, as the core detection module of the device, adopts a compact modular integrated design. It is fully compatible with the mounting base 3 of the device body 1 and is fixed by a combination of positioning pins and bolts to ensure that the device moves within the pipeline without loosening or shifting, adapting to the vibration environment inside the pipeline. Its exterior is encapsulated in a high-strength engineering plastic shell with anti-slip positioning grooves on the surface for precise contact with the mounting base 3. An internal silicone damping layer cushions mechanical vibrations and protects the internal core components. The core component includes multiple circumferentially evenly distributed straight probes (with wear-resistant alumina ceramic plates embedded in the detection surface, connected to the component body via a micro-adjustment bracket, allowing for ±5° detection angle adjustment), an integrated low-noise preamplifier, bandpass filter, and high-speed analog-to-digital converter signal processing unit, a built-in data storage chip, a selected control chip, and an interface module with an anti-drop snap-on power interface and a bidirectional data transmission signal interface. The ultrasonic echo signal acquired by the ultrasonic detection unit is noise-reduced, amplified, filtered, and digitally processed by the signal processing unit. After conversion, the signal is processed by the control chip and temporarily stored in the storage unit. In terms of electrical connection, the device body 1 establishes an electrical connection with the power interface of the flaw detector component 2 through the power management module. The DC power output from the battery is regulated and filtered by the power management module to power the core components of the component. The power management module is electrically interconnected with the controller, which can realize the start and stop control of the component and the monitoring of the power supply voltage. In case of abnormality, the protection mechanism is triggered. At the same time, the signal interface of the flaw detector component 2 establishes a bidirectional electrical connection with the signal input / output port of the controller through the shielded wire. The processed digital defect signal is transmitted to the controller via the bus. The controller can display it in real time or upload it to an external terminal through the wireless transmission module. The controller can also send detection parameter adjustment commands to the component control chip. The component status monitoring pin is electrically connected to the monitoring port of the controller to provide real-time feedback on the working status. In case of failure, the controller triggers an alarm. The selection of each electrical component is in line with the requirements of industrial pipeline flaw detection scenario to ensure stable and efficient operation of the component.

[0024] The straight probe uses a frequency range of 2.5-5MHz and is model 5P10×10; the signal processing unit uses a low-noise preamplifier model AD8232 and the bandpass filter has a frequency range of 100Hz-10kHz to ensure accurate acquisition and processing of defect signals. Example

[0025] Please refer to the following: Figure 1-5 An illumination lamp 5 is fixedly installed at one end of the device body 1. The illumination direction of the illumination lamp 5 is consistent with the moving direction of the device and the detection direction of the flaw detector component 2. The illumination lamp 5 forms a stable connection with the device body 1 and moves synchronously with the device. Its function is to illuminate the detection area of ​​the inner wall of the pipe after the device enters the pipe, eliminate the blind spot in the pipe, provide a clear detection environment for the flaw detector component 2, assist the flaw detector component 2 in accurately identifying inner wall defects, and improve the accuracy of the detection results. Example

[0026] Please refer to the following: Figure 1-5 The limiting plate 14 and the sleeve 15 are structurally compatible. The limiting plate 14 is inserted into the sleeve 15 from the top, and its outer circumferential surface is tightly fitted with the inner circumferential surface of the sleeve 15 to form a sliding fit. This compatible structure restricts the radial displacement of the limiting plate 14 in the sleeve 15 and only allows it to slide along the axial direction. At the same time, it indirectly restricts the extension range of the spring 13, avoids the spring 13 from over-extension and failure, ensures the smoothness and reliability of the limiting plate 14 when it drives the adjusting rod 9 to move, provides structural protection for the precise adjustment of the universal wheel 10, and maintains the overall operational stability of the device. Example

[0027] Please refer to the following: Figure 1-5 The sleeve 15 has through holes 12 machined on its circumferential side. The structure of the through holes 12 is adapted to the traction rope 7. The traction rope 7 passes through the through holes 12 and forms a sliding fit with the inner wall of the through holes 12. The through holes 12 provide a stable passage for the traction rope 7, avoiding excessive friction or entanglement between the traction rope 7 and the edge of the sleeve 15 during the pulling process. This ensures that the pulling force applied by the handle 8 can be efficiently and without damage transmitted to the limiting plate 14 through the traction rope 7, realizing flexible control of the limiting plate 14 and ensuring the convenience and effectiveness of adjusting the support spacing of the universal wheel 10.

[0028] It should be noted that the controller control circuit can be implemented by simple programming by those skilled in the art, and is common knowledge in the field. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0029] The working principle of the thermal pipeline flaw detection device provided by this utility model is as follows: When using this thermal pipeline flaw detection device, first start the device via the controller. The battery provides power to the flaw detector assembly 2, the lighting lamp 5, the drive mechanism 4, etc. Before inspection, depending on the inner diameter of the pipeline, if it is necessary to increase the support distance of the universal wheels 10, loosen the handle 8. The spring 13 inside the sleeve 15 releases its elasticity, pushing the limiting plate 14 upward, causing the adjusting rod 9 to extend along the clearance hole 11, so that the universal wheels 10 expand outward and fit against the inner wall of the pipeline. If it is necessary to decrease the distance, pull the handle 8. The traction rope 7 pulls the limiting plate 14 through the through hole 12 on the side of the sleeve 15, compressing the spring 13, and the adjusting rod 9 retracts, achieving precise adjustment of the support distance. Subsequently, the drive rod 6 can be threadedly fixed to the threaded connecting sleeve 16 through the threaded connector. If it is necessary to extend the inspection length, the extension rod can be connected through the threaded connector. After the device is placed in the pipeline, the drive mechanism 4 drives the casters 10 to roll, pushing the device to move inside the pipeline. The lighting lamp 5 illuminates the inner wall of the pipeline. The flaw detector component 2 detects defects on the inner wall and transmits the data to the controller. The staff can view the test results through the controller. During the test, the controller adjusts the operating status of each component in real time to ensure that the flaw detection operation is carried out continuously and stably, and completes efficient and accurate flaw detection of thermal pipelines with different inner diameters and lengths.

[0030] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A thermal pipeline flaw detection device, comprising a device body (1), characterized in that, The device body (1) is equipped with a drive mechanism (4). The drive mechanism (4) includes a sleeve (15). The bottom end of the sleeve (15) is fixed to the outer surface of the device body (1). A limit plate (14) is slidably connected inside the sleeve (15). An adjustment rod (9) is installed on the top surface of the limit plate (14). A universal wheel (10) is installed through the top end of the adjustment rod (9) on the top surface of the sleeve (15). A spring (13) is installed on the bottom surface of the limit plate (14). The bottom end of the spring (13) is fixed to the bottom end inside the sleeve (15). A traction rope (7) is fixed on the bottom surface of the limit plate (14). The drive mechanism (4) is equipped with multiple sets of traction ropes (7), one end of each of the multiple traction ropes (7) is fixed to a handle (8).

2. The thermal pipeline flaw detection device according to claim 1, characterized in that, The device body (1) is equipped with a threaded connecting cylinder (16) on its end face. The threaded connecting cylinder (16) is threadedly connected to a drive rod (6), and a threaded connector is installed at one end of the drive rod (6).

3. The thermal pipeline flaw detection device according to claim 1, characterized in that, The top surface of the sleeve (15) is provided with a relief hole (11) adapted to the adjusting rod (9), and the inner diameter of the relief hole (11) is equal to the outer diameter of the adjusting rod (9).

4. The thermal pipeline flaw detection device according to claim 1, characterized in that, The device body (1) is mounted on a mounting base (3), and a flaw detector assembly (2) is mounted on the mounting base (3).

5. A thermal pipeline flaw detection device according to claim 1, characterized in that, A lighting lamp (5) is installed at one end of the device body (1).

6. The thermal pipeline flaw detection device according to claim 1, characterized in that, The outer diameter of the limiting plate (14) is equal to the inner diameter of the sleeve (15).

7. A thermal pipeline flaw detection device according to claim 1, characterized in that, The sleeve (15) has a through hole (12) on its circumferential side to accommodate the traction rope (7).

8. A thermal pipeline flaw detection device according to claim 1, characterized in that, The device body (1) is equipped with a matching controller and a battery.

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