A polyurethane-lined steel pipe internal defect detection device
By designing a testing device adapted to steel pipes of different sizes, and utilizing remote control and acoustic flaw detection technology, the problems of complex operation and poor adaptability of existing devices have been solved, achieving efficient and accurate defect detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU GUANGDING PIPE IND TECH CO LTD
- Filing Date
- 2024-12-31
- Publication Date
- 2026-06-26
AI Technical Summary
Existing testing devices for polyurethane-lined steel pipes are complex to operate, time-consuming, and difficult to adapt to steel pipes of different sizes, especially small-sized steel pipes.
A detection device comprising a detection structure and a tumbling structure was designed. The push rod motor and rotary motor are controlled by remote control to adjust the extension and rotation of the moving wheels. Combined with an acoustic flaw detection device, it can realize the preliminary and further scanning detection of internal defects in steel pipes.
It enables adaptive testing of steel pipes of different sizes, simplifies the operation process, improves testing efficiency and accuracy, and can quickly and accurately locate and scan the defect location.
Smart Images
Figure CN224416790U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of detection device technology, and in particular to a device for detecting internal defects in polyurethane-lined steel pipes. Background Technology
[0002] Polyurethane-lined steel pipe is a high-performance pipe material. It is a composite pipe formed by coating a layer of polyurethane material on the inner wall of a steel pipe as the base material. Polyurethane-lined steel pipe has excellent wear resistance and can withstand the scouring of high-speed and high-flow media, thus extending its service life. Polyurethane-lined steel pipe has anti-scaling properties, which can effectively prevent the formation of scale and reduce maintenance costs. Existing polyurethane-lined steel pipes require inspection of the inner wall after production to detect defects.
[0003] Existing methods for detecting defects in polyurethane-lined steel pipes typically involve manually inspecting the inner wall of the pipe using an acoustic testing device to locate the damaged area. A movable probe is then used to move to a designated location to assess the extent of the damage. This process is complex and time-consuming. Furthermore, due to the varying sizes of different polyurethane-lined steel pipes, manual inspection of smaller pipes using the device is difficult.
[0004] Therefore, it is necessary to provide a new device for detecting internal defects in polyurethane-lined steel pipes to solve the above-mentioned technical problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a device for detecting internal defects in polyurethane-lined steel pipes.
[0006] The polyurethane-lined steel pipe internal defect detection device provided by this utility model includes:
[0007] The detection structure includes a detection host and a detection head. The detection head is fixedly connected to one side of the detection host, and a connecting rod is fixedly connected to the outside of the detection host. Multiple sets of connecting rods are provided.
[0008] The tumbling structure is located on the outside of the main detection unit. The tumbling structure includes an outer frame, a push rod motor, and a wheel frame. The outer frame is fixedly connected to the outside of the connecting rod. The push rod motor is fixedly connected to the outer frame in three directions. The wheel frame is fixedly connected to the outer output end of the push rod motor.
[0009] Preferably, the wheel frame is internally connected to a movable wheel, which allows the device to remain stable inside the pipe.
[0010] Preferably, a rotary motor is fixedly connected to one side of the wheel frame, and the device can be moved by the rotary motor.
[0011] Preferably, a through hole is provided on one side of the wheel frame, and the output end of the rotary motor passes through the through hole and is fixedly connected to one side of the movable wheel. The movable wheel can be rotated by the rotary motor to move the device inside the pipe.
[0012] Preferably, the outer frame is a metal frame in the shape of an equilateral triangle, which can protect the detection host.
[0013] Preferably, a controller is fixedly connected to the front of the detection host, and a signal receiver is installed inside the controller. The device can be easily operated through the remotely controlled controller.
[0014] Preferably, a battery is electrically connected to one side of the detection host, which can provide power to the device.
[0015] Preferably, the push rod motor and the rotary motor are electrically connected to the controller via wires, and power and control signals can be transmitted to the various electronic components via the wires.
[0016] Compared with related technologies, the internal defect detection device for polyurethane-lined steel pipes provided by this utility model has the following advantages:
[0017] This utility model provides a device for detecting internal defects in polyurethane-lined steel pipes.
[0018] 1. This utility model can adapt to steel pipes of different sizes through the set adjustment structure. When it is necessary to inspect the inside of the steel pipe, the outer output end of the push rod motor can be extended and retracted through the remote control controller, which drives the wheel frame to extend and retract. The moving wheel of the adjustment device is supported on the inner wall of the pipe, thereby realizing the adaptation to pipes of different sizes.
[0019] 2. This utility model can scan the location of defects in steel pipes using a set detection structure. When it is necessary to inspect the inside of the steel pipe, the device can be placed inside the steel pipe by manually holding the outer frame. The detection host is controlled by a remote controller to control the detection head to inspect the inside of the steel pipe. The detection head is equipped with an acoustic flaw detection device. The piezoelectric crystal of the probe inside the device converts electrical energy into ultrasonic waves. When the ultrasonic waves propagate inside the pipe, they undergo reflection, refraction, diffraction, and other processes. When the ultrasonic waves encounter gaps inside the material, the normal propagation of the sound waves will be interfered with due to the difference in acoustic properties between the defect and the material, generating reflected waves. The reflected waves are received by the receiving end of the probe, and the detection host analyzes the position of the reflection to achieve a preliminary determination of the defect location. After the preliminary determination of the defect location, the output end of the rotary motor 8 can be rotated by the remote controller 10, which drives the moving wheel 7 to rotate and move the device to the defect location. The acoustic flaw detection device inside the detection head 6 is then used to further scan and detect the gap, thereby achieving a complete detection of the defect location. Attached Figure Description
[0020] Figure 1 A schematic diagram of the overall structure of the polyurethane-lined steel pipe internal defect detection device provided by this utility model.
[0021] Figure 2 for Figure 1 The diagram shows a front cross-sectional view of the device for detecting internal defects in polyurethane-lined steel pipes.
[0022] Figure 3 for Figure 1 The diagram shows a side cross-sectional view of the device for detecting internal defects in polyurethane-lined steel pipes.
[0023] The following are the labels in the diagram: 1. Detection host; 2. Connecting rod; 3. Outer frame; 4. Push rod motor; 5. Wheel frame; 6. Detection head; 7. Moving wheel; 8. Rotary motor; 9. Storage battery; 10. Controller; 11. Wire. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0026] Please see Figures 1 to 3This utility model provides a device for detecting internal defects in polyurethane-lined steel pipes, the device comprising:
[0027] The detection structure includes a detection host 1 and a detection head 6. The detection head 6 is fixedly connected to one side of the detection host 1, and a connecting rod 2 is fixedly connected to the outside of the detection host 1. Multiple sets of connecting rods 2 are provided.
[0028] The tumbling structure is provided on the outside of the detection host 1. The tumbling structure includes an outer frame 3, a push rod motor 4 and a wheel frame 5. The outer frame 3 is fixedly connected to the outside of the connecting rod 2. The push rod motor 4 is fixedly connected to the three directions of the outer frame 3. The wheel frame 5 is fixedly connected to the outer output end of the push rod motor 4.
[0029] It should be noted that when internal inspection of the steel pipe is required, the outer output end of the push rod motor 4 can be extended or retracted via the remote control controller 10, which in turn drives the wheel frame 5 to extend or retract. The moving wheel 7 of the adjusting device is supported on the inner wall of the pipe, thus adapting to pipes of different sizes. When internal inspection of the steel pipe is required, the device can be placed inside the steel pipe by manually holding the outer frame 3. The remote control controller 10 controls the inspection host to control the inspection head 6 to inspect the inside of the steel pipe. The inspection head 6 is equipped with an acoustic flaw detection device. The piezoelectric crystal of the probe inside the device converts electrical energy into ultrasonic waves. When the ultrasonic waves propagate inside the pipe... The process involves reflection, refraction, and diffraction. When ultrasonic waves encounter gaps within a material, the normal propagation of the sound waves is disrupted due to the difference in acoustic properties between the defect and the material, resulting in reflected waves. These reflected waves are received by the receiving end of the probe, and the position of the reflection is analyzed by the detection host 1, thus achieving a preliminary determination of the defect location. After the preliminary determination of the defect location, the output end of the rotary motor 8 can be rotated by the remote controller 10, driving the moving wheel 7 to rotate and move the device to the defect location. The gap is then further scanned and detected by the acoustic flaw detection device inside the detection head 6, thus achieving a complete detection of the defect location.
[0030] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 The wheel frame 5 is internally connected to a movable wheel 7, which allows the device to remain stable inside the pipe.
[0031] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 A rotary motor 8 is fixedly connected to one side of the wheel frame 5, and the device can be moved by the rotary motor 8.
[0032] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 A through hole is provided on one side of the wheel frame 5. The output end of the rotary motor 8 passes through the through hole and is fixedly connected to one side of the movable wheel 7. The rotary motor 8 drives the movable wheel 7 to rotate, which can drive the device to move inside the pipeline.
[0033] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 The outer frame 3 is a metal frame in the shape of an equilateral triangle, and the metal outer frame 3 can protect the detection host 1.
[0034] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 A controller 10 is fixedly connected to the front of the detection host 1. The controller 10 has a signal receiver inside. The device can be easily operated through the remotely controlled controller 10.
[0035] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 A battery 9 is electrically connected to one side of the detection host 1, which can provide power to the device.
[0036] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 The push rod motor 4 and the rotary motor 8 are electrically connected to the controller 10 via wires 11. Power and control signals can be transmitted to various electronic components via the wires 11.
[0037] The working principle of the polyurethane-lined steel pipe internal defect detection device provided by this utility model is as follows:
[0038] In use, when it is necessary to inspect the inside of the steel pipe, the remote controller 10 can be used to control the extension and retraction of the outer output end of the push rod motor 4, which in turn drives the wheel frame 5 to extend and retract. The moving wheel 7 of the adjusting device is supported on the inner wall of the pipe, thus adapting to pipes of different sizes. When it is necessary to inspect the inside of the steel pipe, the device can be placed inside the steel pipe by manually holding the outer frame 3. The remote controller 10 controls the detection host to control the detection head 6 to inspect the inside of the steel pipe. The detection head 6 is equipped with an acoustic flaw detection device. The piezoelectric crystal of the probe inside the device converts electrical energy into ultrasonic waves. When the ultrasonic waves propagate inside the pipe... The sound waves undergo reflection, refraction, and diffraction. When the ultrasonic waves encounter gaps inside the material, the normal propagation of the sound waves is interfered with due to the difference in acoustic properties between the defect and the material, resulting in reflected waves. The reflected waves are received by the receiving end of the probe, and the position of the reflection is analyzed by the detection host 1, thereby achieving a preliminary determination of the defect location. After the preliminary determination of the defect location, the output end of the rotary motor 8 can be controlled by the remote controller 10 to rotate, driving the moving wheel 7 to rotate and moving the device to the defect location. The gap is then further scanned and detected by the ultrasonic flaw detection device set inside the detection head 6, thereby achieving a complete detection of the defect location.
[0039] 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 device for detecting internal defects in a polyurethane lined steel pipe, characterized by, include: The detection structure includes a detection host (1) and a detection head (6). The detection head (6) is fixedly connected to one side of the detection host (1), and a connecting rod (2) is fixedly connected to the outside of the detection host (1). The connecting rod (2) is provided with multiple sets. An adjustment structure is provided on the outside of the detection host (1). The adjustment structure includes an outer frame (3), a push rod motor (4) and a wheel frame (5). The outer frame (3) is fixedly connected to the outside of the connecting rod (2). The push rod motor (4) is fixedly connected to the three directions of the outer frame (3). The wheel frame (5) is fixedly connected to the outer output end of the push rod motor (4).
2. The polyurethane-lined steel pipe internal defect detection apparatus according to claim 1, characterized by, The outer side of the wheel frame (5) is fitted with and rotatably connected to a movable wheel (7).
3. The polyurethane-lined steel pipe internal defect detection apparatus according to claim 1, characterized by, A rotary motor (8) is fixedly connected to one side of the wheel frame (5).
4. The polyurethane-lined steel pipe internal defect detection apparatus according to claim 3, characterized by A through hole is provided on one side of the wheel frame (5), and the output end of the rotary motor (8) passes through the through hole and is fixedly connected to one side of the moving wheel (7).
5. The polyurethane-lined steel pipe internal defect detection apparatus according to claim 1, characterized by The outer frame (3) is a metal frame in the shape of an equilateral triangle.
6. The polyurethane-lined steel pipe internal defect detection apparatus according to claim 1, characterized by The front side of the detection host (1) is fixedly connected to a controller (10), and a signal receiver is installed inside the controller (10).
7. The device for detecting internal defects in polyurethane-lined steel pipes according to claim 1, characterized in that, A battery (9) is electrically connected to one side of the detection host (1).
8. The device for detecting internal defects in polyurethane-lined steel pipes according to claim 1, characterized in that, The push rod motor (4) and the rotary motor (8) are electrically connected to the controller (10) via wires (11).