A cable protection pipe wall thickness ultrasonic detection device

Abstract

The utility model discloses a kind of cable protection pipe wall thickness ultrasonic testing device, including conveying frame, transmission roller is equipped in conveying frame, conveying frame top is equipped with fixed frame, first hydraulic telescopic link is connected on fixed frame, ultrasonic probe is connected in first hydraulic telescopic link output end, ultrasonic probe side is equipped with fixed plate, pressure sensor is equipped in fixed plate, fixed plate is flush with ultrasonic probe, the utility model is matched with transmission roller by conveying frame, the continuous conveying of cable protection pipe can be realized, and in combination by the ultrasonic probe driven by first hydraulic telescopic link, it can be stably pressed to pipe wall surface, and cooperate with being set in the fixed plate and built-in pressure sensor of same plane, the pressure that probe applies can be monitored and feedback in real time, ensure the contact pressure between probe and pipe wall constant when detecting each time.

Description

Technical Field

[0001] This utility model relates to the field of cable protection pipe testing technology, specifically to an ultrasonic testing device for the wall thickness of cable protection pipes. Background Technology

[0002] In the construction of infrastructure such as power, communications, and buildings, cable protection pipes are key components that protect underground cables from mechanical damage, chemical corrosion, and environmental impacts. Their structural integrity and manufacturing quality directly affect the safe operation and service life of the cable system. Among these factors, pipe wall thickness is one of the core indicators for evaluating the quality of cable protection pipes. Problems such as uneven wall thickness and localized thinning can lead to decreased pressure resistance, weakened corrosion resistance, and even cable breakage and safety accidents. Therefore, in the production process of cable protection pipes, rapid, accurate, and non-destructive testing of the wall thickness of finished pipes has become an indispensable and crucial step in quality control.

[0003] Currently, ultrasonic testing technology is widely used in pipe wall thickness measurement due to its advantages such as non-contact operation, high precision, and ability to penetrate material interiors. Traditional ultrasonic thickness measurement methods often involve manual inspection using a handheld probe, requiring operators to manually apply coupling agent, position the probe, and read the data. This method is not only inefficient and unable to meet the demands of continuous operation in modern production lines, but also highly susceptible to human error, easily leading to inconsistent test results, missed detections, or misjudgments, thus failing to achieve comprehensive and systematic quality monitoring.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an ultrasonic testing device for the wall thickness of cable protection pipes to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An ultrasonic testing device for the wall thickness of cable protection pipes includes a conveyor frame, a transmission roller inside the conveyor frame, a fixed frame at the top of the conveyor frame, a first hydraulic telescopic rod connected to the fixed frame, an ultrasonic probe connected to the output end of the first hydraulic telescopic rod, a fixed plate on one side of the ultrasonic probe, a pressure sensor inside the fixed plate, and the fixed plate being flush with the ultrasonic probe.

[0008] Furthermore, an automatic spray gun is provided on one side of the ultrasonic probe, and a connecting frame is connected to the outside of the automatic spray gun. The connecting frame is connected to the fixed frame through a second hydraulic telescopic rod.

[0009] Furthermore, the automatic spray gun is connected to the delivery pipe, which passes through the fixed frame and is connected to the extraction pump. The extraction pump is connected to the storage tank through the extraction pipe.

[0010] Furthermore, the storage tank is located on one side of the conveyor frame, and the extraction pump is located on top of the storage tank.

[0011] Furthermore, a cleaning roller brush is provided on one side of the automatic spray gun. Both ends of the cleaning roller brush are connected to the mounting base via bearings. The top of the mounting base is connected to the third hydraulic telescopic rod, which is connected to the fixed frame. A mounting frame is connected to one side of the mounting base, and a laser displacement sensor is connected to the bottom of the mounting frame.

[0012] Furthermore, the two sides of the drive roller are connected to the support frame via bearings, and the support frame is fixedly connected to the conveyor frame.

[0013] Furthermore, there are multiple drive rollers, with two adjacent drive rollers connected by a sprocket and chain mechanism. One of the drive rollers is connected to a reducer via the sprocket and chain mechanism, and the input end of the reducer is connected to the drive motor.

[0014] Furthermore, a PLC controller is connected to one side of the conveyor rack. The PLC controller has a built-in timing module and a display screen.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) Through the cooperation of the conveyor frame and the transmission roller, the cable protection pipe can be continuously conveyed. Combined with the ultrasonic probe driven by the first hydraulic telescopic rod, it can be stably pressed down to the surface of the pipe wall. With the fixed plate and built-in pressure sensor set on the same plane, the pressure applied by the probe can be monitored and fed back in real time, ensuring that the contact pressure between the probe and the pipe wall is constant during each test. This effectively avoids the problem of unstable acoustic coupling caused by pressure fluctuation, thereby improving the repeatability and accuracy of thickness measurement data.

[0017] (2) A cleaning roller brush driven by a third hydraulic telescopic rod is installed in front of the automatic spray gun. It can brush and clean the dust, oil or oxides on the surface of the cable protection pipe before spraying the coupling agent, ensuring that the surface of the detection area is clean, avoiding impurities from interfering with the propagation of ultrasonic waves, and further improving the accuracy and stability of the detection results. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of an ultrasonic testing device for the wall thickness of a cable protection pipe according to an embodiment of the present utility model;

[0020] Figure 2 This is a side view of an ultrasonic testing device for the wall thickness of a cable protection pipe according to an embodiment of the present utility model;

[0021] Figure 3 This is a rear view of an ultrasonic testing device for the wall thickness of a cable protection pipe according to an embodiment of the present utility model;

[0022] Figure 4 This is a connection diagram of the ultrasonic probe of an ultrasonic testing device for cable protection pipe wall thickness according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Conveyor frame; 2. Drive roller; 3. Fixing frame; 4. First hydraulic telescopic rod; 5. Ultrasonic probe; 6. Fixing plate; 7. Pressure sensor; 8. Automatic spray gun; 9. Connecting frame; 10. Second hydraulic telescopic rod; 11. Conveying pipe; 12. Extraction pump; 13. Extraction pipe; 14. Storage tank; 15. Cleaning roller brush; 16. Mounting base; 17. Third hydraulic telescopic rod; 18. Mounting frame; 19. Laser displacement sensor; 20. Support frame; 21. Sprocket and chain mechanism; 22. Reducer; 23. Drive motor; 24. PLC controller; 25. Display screen. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] According to an embodiment of the present invention, an ultrasonic testing device for the wall thickness of a cable protection pipe is provided.

[0027] Example 1

[0028] like Figures 1-4As shown, the ultrasonic testing device for cable protection pipe wall thickness according to an embodiment of the present invention includes a conveyor frame 1. The conveyor frame 1 has a transmission roller 2 inside for supporting and conveying the cable protection pipe to be tested. Both sides of the transmission roller 2 are connected to a support frame 20 via bearings. The support frame 20 is fixedly connected to the conveyor frame 1. There are multiple transmission rollers 2, and two adjacent transmission rollers 2 are connected by a sprocket and chain mechanism 21. One of the transmission rollers 2 is connected to a reducer 22 via the sprocket and chain mechanism 21. The input end of the reducer 22 is connected to a drive motor 23. The sprocket and chain mechanism 21 includes sprockets located at the output ends of the transmission rollers 2 and the reducer 22. The two sprockets are connected by a sprocket... After the drive motor 23 starts via chain transmission, the speed is adjusted by the reducer 22 and the power is transmitted to the transmission roller 2, causing it to rotate synchronously. This achieves uniform and smooth forward movement of the cable protection pipe on the conveyor frame 1. The top of the conveyor frame 1 is equipped with a fixed frame 3, on which a first hydraulic telescopic rod 4 is connected. An ultrasonic probe 5 is connected to the output end of the first hydraulic telescopic rod 4. A fixed plate 6 is provided on one side of the ultrasonic probe 5, and the fixed plate 6 is flush with the ultrasonic probe 5 so that it can synchronously contact the pipe surface when the probe is pressed down. A pressure sensor 7 is embedded inside the fixed plate 6 to monitor the pressure value applied by the probe to the pipe wall in real time and feed the signal back to the PLC controller 24. Through closed-loop control, the system can dynamically adjust the pressure output of the hydraulic telescopic rod 4 to ensure that the contact pressure is constant during each test, avoiding damage to the pipe due to excessive pressure or poor signal due to insufficient pressure.

[0029] like Figures 1-4As shown, an automatic spray gun 8 is provided on one side of the ultrasonic probe 5. A connecting frame 9 is connected to the outside of the automatic spray gun 8. The connecting frame 9 is connected to the fixed frame 3 through a second hydraulic telescopic rod 10. It is used to automatically spray coupling agent before detection. The automatic spray gun 8 is connected to the delivery pipe 11. The delivery pipe 11 passes through the fixed frame 3 and is connected to the extraction pump 12. The extraction pump 12 can be a gear pump, peristaltic pump, or other pump type suitable for liquid characteristics. Its specific type is selected according to the viscosity, corrosiveness, and other physicochemical properties of the coupling agent used (such as water-based, oil-based, or gel-based) to ensure stable liquid supply. The extraction pump 12 is connected to the storage tank 14 through the extraction pipe 13. The storage tank 14 is located on one side of the conveyor frame 1, and the extraction pump 12 is located at the top of the storage tank 14. A cleaning roller brush 15 is provided on one side of the automatic spray gun 8. The cleaning roller brush 15 is connected to the mounting base 16 at both ends via bearings. The top of the mounting base 16 is connected to the third hydraulic telescopic rod 17, which is connected to the fixed frame 3. The telescopic movement of the third hydraulic telescopic rod 17 controls the lifting and lowering of the cleaning roller brush 15, allowing it to contact or detach from the pipe surface as needed. A mounting frame 18 is connected to one side of the mounting base 16, and a laser displacement sensor 19 is connected to the bottom of the mounting frame 18. The laser displacement sensor 19 is used to detect the distance between the middle position of the cleaning roller brush 15 and the pipe to be tested, preventing the cleaning roller brush 15 from moving excessively. A PLC controller 24 is connected to one side of the conveyor frame 1. It is responsible for receiving signals from various sensors such as the pressure sensor 7 and the laser displacement sensor 19, and for centrally controlling the actuators such as the drive motor 23, each hydraulic telescopic rod, the extraction pump 12, and the automatic spray gun 8. The PLC controller 24 has a built-in timing module, which can set parameters such as the detection cycle and action interval to achieve automated cyclic operation. The controller is equipped with a display screen 25, which allows operators to view the equipment operating status, detection data, alarm information, etc. in real time through the human-machine interface, facilitating monitoring and operation.

[0030] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0031] In summary, with the help of the above-mentioned technical solution of this utility model, in actual use, by placing the cable protection tube on the conveyor roller 2, starting the drive motor 23, and adjusting the speed through the reducer 22, the power is transmitted to the transmission roller 2, driving the cable protection tube to be tested to move smoothly forward along the conveyor frame 1. Before the cable protection tube approaches the detection area, the third hydraulic telescopic rod 17 controls the cleaning roller brush 15 to descend. The laser displacement sensor 19 measures the distance to the pipe height in real time, so that the laser displacement sensor 19 and the pipe height are at a fixed value, thereby enabling it to contact and clean the pipe surface, removing dust, oil, or other impurities that may affect the coupling effect. This process not only improves the accuracy of subsequent ultrasonic testing, but also extends the service life of the equipment. Immediately afterwards, before the pipe reaches the detection position, the second hydraulic telescopic rod 10 pushes the automatic spray gun 8 close to the pipe surface and begins to evenly spray an appropriate amount of coupling agent. Pump 12 draws coupling agent from storage tank 14 and delivers it to automatic spray gun 8 via delivery pipe 11. The PLC controller 24, with its built-in timing module, can stop the drive motor 23 and spray gun 8 at predetermined times. Then, the first hydraulic telescopic rod 4 is activated, driving the ultrasonic probe 5 to press downwards against the surface of the pipe coated with coupling agent. Pressure sensor 7 within the fixing plate 6 monitors and feeds back the pressure applied by the probe to the PLC controller 24 in real time. The system dynamically adjusts the pressure output of the hydraulic telescopic rod 4 based on the feedback information to ensure optimal acoustic contact between the probe and the pipe wall. The ultrasonic probe 5 emits high-frequency pulse signals that penetrate the pipe wall and receives the reflected echo signals to calculate the pipe wall thickness. After measurement, the drive motor 23 and automatic spray gun 8 are restarted. All collected wall thickness measurement data is recorded by the PLC controller 24 and can be viewed in real time on the display screen 25.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An ultrasonic testing device for the wall thickness of cable protection pipes, characterized in that, It includes a conveyor frame (1), a transmission roller (2) is provided inside the conveyor frame (1), a fixed frame (3) is provided at the top of the conveyor frame (1), a first hydraulic telescopic rod (4) is connected to the fixed frame (3), an ultrasonic probe (5) is connected to the output end of the first hydraulic telescopic rod (4), a fixed plate (6) is provided on one side of the ultrasonic probe (5), a pressure sensor (7) is provided inside the fixed plate (6), and the fixed plate (6) is flush with the ultrasonic probe (5).

2. The ultrasonic testing device for cable protection pipe wall thickness according to claim 1, characterized in that, An automatic spray gun (8) is provided on one side of the ultrasonic probe (5). A connecting frame (9) is connected to the outside of the automatic spray gun (8). The connecting frame (9) is connected to the fixed frame (3) through the second hydraulic telescopic rod (10).

3. The ultrasonic testing device for cable protection pipe wall thickness according to claim 1, characterized in that, The automatic spray gun (8) is connected to the delivery pipe (11), the delivery pipe (11) passes through the fixed frame (3) and is connected to the extraction pump (12), and the extraction pump (12) is connected to the storage tank (14) through the extraction pipe (13).

4. The ultrasonic testing device for cable protection pipe wall thickness according to claim 1, characterized in that, The storage tank (14) is located on one side of the conveyor frame (1), and the extraction pump (12) is located at the top of the storage tank (14).

5. The ultrasonic testing device for cable protection pipe wall thickness according to claim 1, characterized in that, The automatic spray gun (8) is equipped with a cleaning roller brush (15) on one side. The two ends of the cleaning roller brush (15) are connected to the mounting base (16) through bearings. The top of the mounting base (16) is connected to the third hydraulic telescopic rod (17). The third hydraulic telescopic rod (17) is connected to the fixed frame (3). The mounting base (16) is connected to the mounting frame (18) on one side. The bottom of the mounting frame (18) is connected to the laser displacement sensor (19).

6. The ultrasonic testing device for cable protection pipe wall thickness according to claim 1, characterized in that, The transmission roller (2) is connected to the support frame (20) on both sides by bearings, and the support frame (20) is fixedly connected to the transmission frame (1).

7. The ultrasonic testing device for cable protection pipe wall thickness according to claim 1, characterized in that, There are multiple transmission rollers (2). Two adjacent transmission rollers (2) are connected by a sprocket and chain mechanism (21). One of the transmission rollers (2) is connected to a reducer (22) through the sprocket and chain mechanism (21). The input end of the reducer (22) is connected to the drive motor (23).

8. The ultrasonic testing device for cable protection pipe wall thickness according to claim 1, characterized in that, A PLC controller (24) is connected to one side of the conveyor (1). The PLC controller (24) has a built-in timing module and a display screen (25) on it.

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