A composite steel pipe wall thickness detection device

Abstract

The application discloses a composite steel pipe wall thickness detection device, and belongs to the field of steel pipe wall thickness detection devices. The composite steel pipe wall thickness detection device comprises a steel pipe conveying mechanism, a lifting mechanism arranged on the side of the steel pipe conveying mechanism and used for lifting a steel pipe away from the steel pipe conveying mechanism and rotating the steel pipe, and an ultrasonic detection assembly arranged at a position above the steel pipe conveying mechanism and used for detecting the wall thickness of the steel pipe by clamping the steel pipe in cooperation with the lifting mechanism. The composite steel pipe wall thickness detection device adopts a double-crystal probe to emit and receive ultrasonic signals, and the special structure of the double-crystal probe can effectively reduce the interference of multiple reflection signals generated by the multi-layer structure of the composite steel pipe on the detection result. Meanwhile, a pressure sensor can ensure that the contact pressure between a compression roller and the steel pipe is appropriate, so that the double-crystal probe is in stable contact with the surface of the steel pipe, and the accuracy of ultrasonic signal emission and reception is further improved, and thus the detection precision is improved.

Description

Technical Field

[0001] This application relates to the technical field of steel pipe wall thickness detection devices, specifically a composite steel pipe wall thickness detection device. Background Technology

[0002] The steel pipe wall thickness testing device is a specialized equipment used to accurately measure the wall thickness of steel pipes. It is widely used in industries such as petroleum, natural gas, chemical, boiler, shipbuilding, and construction to ensure that the quality of steel pipes meets the standard requirements and avoid safety hazards caused by uneven or out-of-tolerance wall thickness.

[0003] For ordinary steel pipes, ultrasonic thickness gauges, electromagnetic induction thickness gauges, or calipers are commonly used for inspection. These methods are mature and widely applicable. However, for composite steel pipes, due to their multi-layered structure, the acoustic impedance of different materials varies greatly. For example, in the case of steel and plastic, ultrasonic waves will be reflected multiple times at the interfaces between steel and plastic or steel and ceramic, which may lead to signal aliasing or misjudgment. This results in complex ultrasonic reflection signals, affecting the accuracy of the inspection. Furthermore, when inspecting the full circumference wall thickness, it is necessary to continuously adjust the position of the inspection probe around the steel pipe. This is tedious and difficult, whether using a robotic arm or manually, thus affecting the inspection efficiency.

[0004] Therefore, this application provides a composite steel pipe wall thickness detection device to solve the above problems. Utility Model Content

[0005] This application provides a composite steel pipe wall thickness detection device, which aims to solve the problems mentioned in the background art that existing wall thickness detection devices are easily affected by the interference of multi-layer structure reflection signals when detecting composite steel pipes, thus affecting the detection accuracy, and that the operation is difficult during full-circumference detection, thus affecting the detection efficiency.

[0006] To achieve the above objectives, this application provides the following technical solution: a composite steel pipe wall thickness detection device, including a steel pipe conveying mechanism, a lifting mechanism disposed on the side of the steel pipe conveying mechanism for lifting the steel pipe away from the steel pipe conveying mechanism and rotating the steel pipe, an ultrasonic detection component disposed above the steel pipe conveying mechanism for clamping the steel pipe in cooperation with the lifting mechanism for detecting the steel pipe wall thickness, and a control console for generating and receiving ultrasonic signals connected by an L-shaped connecting rod on the side of the steel pipe conveying mechanism.

[0007] The ultrasonic detection assembly includes a boom fixedly connected to the end of the L-shaped connecting rod away from the control console, a pressure sensor fixedly connected to the bottom of the boom, a pressure roller frame fixedly connected to the bottom of the pressure sensor, pressure rollers rotatably connected to both sides of the pressure roller frame, a dual-crystal probe telescopically connected to the bottom of the pressure roller frame via a telescopic rod, and a spring fitted onto the outside of the telescopic rod and connected at both ends to the dual-crystal probe and the pressure roller frame, respectively. In this way, the dual-crystal probe is used to transmit and receive ultrasonic signals. The special structure of the dual-crystal probe can effectively reduce the interference of multiple reflection signals generated by the multi-layered structure of the composite steel pipe on the detection results. At the same time, the pressure sensor can ensure that the pressure roller and the steel pipe maintain a suitable contact pressure, allowing the dual-crystal probe to maintain stable contact with the surface of the steel pipe, further improving the accuracy of ultrasonic signal transmission and reception, thereby improving detection precision.

[0008] Preferably, the steel pipe conveying mechanism includes a bracket, a plurality of horn rollers rotatably mounted on the bracket in a linear array, a transmission gear fixedly connected to one end of the horn roller shaft, a gear chain fitted outside the transmission gear and meshing with the transmission gear, and a conveying motor fixedly mounted on the side of the bracket and connected to one of the horn roller shafts. A base for supporting the steel pipe conveying mechanism is fixedly connected to the bottom of the bracket.

[0009] Preferably, the lifting mechanism includes four rollers rotatably mounted on the base and arranged in a rectangular array on both sides corresponding to the steel pipe conveying mechanism, a roller frame rotatably connected to the rollers for supporting the rollers, a push rod fixedly mounted on the base with its movable end connected to the bottom of the roller frame, and a rotary motor fixedly mounted on two roller frames on the same side with its output shaft connected to the corresponding roller.

[0010] Preferably, both the dual-crystal probe and the pressure sensor output are connected to the control console.

[0011] Preferably, the rotary motor, the push rod, and the conveying motor are all connected to the control console.

[0012] Preferably, the centerline of the horn roller is aligned with the centerline of the ultrasonic detection assembly, the dual-crystal probe is located on the centerline, and the two pressure rollers are symmetrically arranged on both sides of the centerline.

[0013] This composite steel pipe wall thickness detection device uses a dual-crystal probe to transmit and receive ultrasonic signals. The special structure of the dual-crystal probe can effectively reduce the interference of multiple reflection signals generated by the multi-layer structure of the composite steel pipe on the detection results. At the same time, the pressure sensor can ensure that the pressure roller and the steel pipe maintain a suitable contact pressure, so that the dual-crystal probe is in stable contact with the surface of the steel pipe, further improving the accuracy of ultrasonic signal transmission and reception, thereby improving the detection precision.

[0014] The composite steel pipe wall thickness detection device adopts a centralized control method, and the connection and communication between various components are more standardized and unified, which facilitates fault diagnosis and maintenance of the system. When a component fails, the control console can issue an alarm and display fault information in a timely manner, making it convenient for maintenance personnel to quickly locate and solve problems, thus improving the reliability and maintainability of the system. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a composite steel pipe wall thickness detection device. Figure 1 ;

[0016] Figure 2 A schematic diagram of the structure of a composite steel pipe wall thickness detection device. Figure 2 ;

[0017] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle.

[0018] In the picture:

[0019] 1. Steel pipe conveying mechanism; 11. Bracket; 12. Horn drum; 13. Transmission gear; 14. Gear chain; 15. Conveyor motor;

[0020] 2. Base;

[0021] 3. Lifting mechanism; 31. Idler roller; 32. Idler roller frame; 33. Push rod; 34. Rotary motor;

[0022] 4. Ultrasonic detection assembly; 41. Suspension rod; 42. Pressure sensor; 43. Pressure roller frame; 44. Pressure roller; 45. Dual crystal probe; 451. Telescopic rod; 46. Spring;

[0023] 5. Control console; 51. L-shaped connecting rod. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] This embodiment provides a composite steel pipe wall thickness detection device, such as... Figures 1-3As shown, the composite steel pipe wall thickness detection device includes a steel pipe conveying mechanism 1, a lifting mechanism 3 installed on the side of the steel pipe conveying mechanism 1 for lifting the steel pipe away from the steel pipe conveying mechanism 1 and rotating the steel pipe, an ultrasonic detection component 4 installed above the steel pipe conveying mechanism 1 to cooperate with the lifting mechanism 3 to clamp the steel pipe for detecting the steel pipe wall thickness, a control console 5 connected to the side of the steel pipe conveying mechanism 1 via an L-shaped connecting rod 51 for generating and receiving ultrasonic signals, and an ultrasonic detection component 4 including a hanging rod 41 fixedly connected to the end of the L-shaped connecting rod 51 away from the control console 5, a pressure sensor 42 fixedly connected to the bottom end of the hanging rod 41, a pressure roller frame 43 fixedly connected to the bottom end of the pressure sensor 42, pressure rollers 44 rotatably connected to both sides of the pressure roller frame 43, a dual crystal probe 45 telescopically connected to the bottom of the pressure roller frame 43 via a telescopic rod 451, and a spring 46 fitted outside the telescopic rod 451 and connected at both ends to the dual crystal probe 45 and the pressure roller frame 43 respectively.

[0026] In use, place the composite steel pipe on the steel pipe conveying mechanism 1, adjust the position and direction of the steel pipe to ensure it can be smoothly conveyed to the testing area. Simultaneously, check that all components, including the lifting mechanism 3, ultrasonic detection component 4, and control console 5, are functioning properly and that connections are secure. Start the steel pipe conveying mechanism 1 to transport the composite steel pipe to the testing position. When the steel pipe reaches the testing position, the lifting mechanism 3 starts working, lifting the steel pipe away from the steel pipe conveying mechanism 1, and starts the rotating device to make the steel pipe rotate around its own axis. The ultrasonic detection component 4, with the cooperation of the lifting mechanism 3, clamps the steel pipe. The control console 5 controls the dual-crystal probe 45 to emit ultrasonic signals and simultaneously receive reflected signals. The dual-crystal probe 45's special structure effectively reduces the interference of multiple reflections from the multi-layered structure of the composite steel pipe on the testing results. As the steel pipe rotates, the ultrasonic probe... The measuring component 4 continuously inspects the entire circumference of the steel pipe. The pressure sensor 42 monitors the pressure between the pressure roller 44 and the steel pipe in real time. After the probe contacts the pipe wall, the lifting mechanism 3 stops lifting, ensuring stable contact during the inspection process. The control console 5 analyzes and processes the received ultrasonic reflection signals, calculates the wall thickness data at various positions around the circumference of the steel pipe, and displays or stores the inspection results for subsequent evaluation and judgment of the steel pipe quality. After the inspection is completed, the lifting mechanism 3 lowers the steel pipe back onto the steel pipe conveying mechanism 1, which then transports the inspected steel pipe away. At the same time, all inspection components are reset, ready for the next inspection. The design of the telescopic rod 451 and the spring 46 allows the dual-crystal probe 45 to adapt to composite steel pipes of different diameters and can automatically adjust according to the slight positional changes of the steel pipe during the inspection process, ensuring the adaptability of the inspection device to steel pipes of different specifications and the stability of the inspection.

[0027] Specifically, the steel pipe conveying mechanism 1 includes a bracket 11, several horn rollers 12 rotatably mounted on the bracket 11 in a linear array, a transmission gear 13 fixedly connected to one end of the shaft of the horn roller 12, a gear chain 14 fitted around and meshing with the transmission gear 13, and a conveying motor 15 fixedly mounted on the side of the bracket 11 and connected to the shaft of one of the horn rollers 12. A base 2 for supporting the steel pipe conveying mechanism 1 is fixedly connected to the bottom of the bracket 11; the conveying motor 15 is fixedly mounted on the side of the bracket 11, and its output shaft is connected to the shaft of one of the horn rollers 12. When started, it drives the connected horn roller 12 to rotate. When one horn roller 12 rotates, the power is transmitted to other horn rollers 12 in sequence through the transmission action of the transmission gear 13 and the gear chain 14, so that all horn rollers 12 rotate synchronously. The special shape of the horn roller 12 can play a certain limiting role for the steel pipe, preventing the steel pipe from rolling randomly during the conveying process. With the synchronous rotation of the horn roller 12, the steel pipe is conveyed to the detection position along the length direction of the bracket 11 under the action of friction. The base 2 provides stable support for the entire steel pipe conveying mechanism 1, ensuring the smoothness of the conveying process.

[0028] Specifically, the lifting mechanism 3 includes four rollers 31 rotatably mounted on the base 2 and arranged in a rectangular array on both sides of the steel pipe conveying mechanism 1; roller frames 32 rotatably connected to the rollers 31 for supporting the rollers 31; a push rod 33 fixedly mounted on the base 2 with its movable end connected to the bottom of the roller frame 32; and a rotary motor 34 fixedly mounted on two roller frames 32 on the same side with its output shaft connected to its corresponding roller 31. When steel pipe lifting is required, the control console 5 controls the push rod 33 to extend, pushing the roller frame 32 upward. Since the rollers 31 are rotatably mounted on the roller frame 32, the rollers 31 also move upward, lifting the steel pipe placed on the steel pipe conveying mechanism 1 and detaching the steel pipe from the trumpet roller 12. After the steel pipe is lifted, the control console 5 controls the rotary motor 34 to start, driving the rollers 31 to rotate. Because the steel pipe is placed on the rollers 31, under the action of friction, the steel pipe will rotate around its own axis along with the rollers 31, providing conditions for subsequent full-circumference wall thickness detection.

[0029] It should be noted that the output terminals of the dual-crystal probe 45 and the pressure sensor 42 are both connected to the control console 5, and the rotary motor 34, push rod 33, and conveying motor 15 are also connected to the control console 5. During the detection process, the control console 5 coordinates the work of each component according to the preset program and detection requirements. For example, when the steel pipe is conveyed to the detection position, the control console 5 controls the push rod 33 to extend and lift it, then controls the rotary motor 34 to start and rotate the steel pipe, while simultaneously controlling the dual-crystal probe 45 to emit ultrasonic signals for detection, and adjusts the contact state between the dual-crystal probe 45 and the steel pipe according to the pressure signal fed back by the pressure sensor 42 to ensure the accuracy and stability of the detection.

[0030] Specifically, the centerline of the horn roller 12 is aligned with the centerline of the ultrasonic detection component 4, the dual-crystal probe 45 is located on the centerline, and the two pressure rollers 44 are symmetrically arranged on both sides of the centerline. The centerline alignment and symmetrical arrangement design ensures that the dual-crystal probe 45 can always be kept directly above the steel pipe for detection, ensuring that the ultrasonic signal penetrates the steel pipe wall vertically, reducing attenuation and interference during signal propagation, and improving the quality and accuracy of the detection signal, thereby enabling more precise measurement of the steel pipe wall thickness. The two symmetrically arranged pressure rollers 44 can provide balanced support and pressure for the steel pipe, preventing problems such as eccentricity and swaying during the rotation of the steel pipe, and ensuring the stability of the steel pipe rotation. This helps the dual-crystal probe 45 to perform continuous and stable detection of the entire circumference of the steel pipe, avoiding fluctuations and errors in detection data caused by the instability of the steel pipe.

[0031] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A composite steel pipe wall thickness detection device, characterized in that: The system includes a steel pipe conveying mechanism (1), a lifting mechanism (3) provided on the side of the steel pipe conveying mechanism (1) for lifting the steel pipe away from the steel pipe conveying mechanism (1) and rotating the steel pipe, an ultrasonic detection component (4) provided above the steel pipe conveying mechanism (1) to cooperate with the lifting mechanism (3) to clamp the steel pipe for detecting the wall thickness of the steel pipe, and a control console (5) connected by an L-shaped connecting rod (51) on the side of the steel pipe conveying mechanism (1) for generating and receiving ultrasonic signals. The ultrasonic detection assembly (4) includes a boom (41) fixedly connected to the end of the L-shaped connecting rod (51) away from the control console (5), a pressure sensor (42) fixedly connected to the bottom end of the boom (41), a pressure roller frame (43) fixedly connected to the bottom end of the pressure sensor (42), pressure rollers (44) rotatably connected to both sides of the pressure roller frame (43), a dual crystal probe (45) telescopically connected to the bottom of the pressure roller frame (43) via a telescopic rod (451), and a spring (46) fitted outside the telescopic rod (451) and connected at both ends to the dual crystal probe (45) and the pressure roller frame (43) respectively.

2. The composite steel pipe wall thickness detection device according to claim 1, characterized in that: The steel pipe conveying mechanism (1) includes a bracket (11), a number of horn rollers (12) rotatably mounted on the bracket (11) and arranged in a linear array, a transmission gear (13) fixedly connected to one end of the shaft of the horn roller (12), a gear chain (14) fitted on the outside of the transmission gear (13) and meshing with the transmission gear (13), and a conveying motor (15) fixedly mounted on the side of the bracket (11) and connected to the shaft of one of the horn rollers (12). A base (2) for supporting the steel pipe conveying mechanism (1) is fixedly connected to the bottom of the bracket (11).

3. The composite steel pipe wall thickness detection device according to claim 2, characterized in that: The lifting mechanism (3) includes four rollers (31) rotatably mounted on the base (2) and arranged in a rectangular array on both sides of the steel pipe conveying mechanism (1), roller frames (32) rotatably connected to the rollers (31) for supporting the rollers (31), push rods (33) fixedly mounted on the base (2) and whose movable ends are connected to the bottom of the roller frames (32), and rotary motors (34) fixedly mounted on the two roller frames (32) on the same side and whose output shafts are connected to the corresponding rollers (31).

4. The composite steel pipe wall thickness detection device according to claim 3, characterized in that: The output terminals of the dual-crystal probe (45) and the pressure sensor (42) are both connected to the control console (5).

5. The composite steel pipe wall thickness detection device according to claim 4, characterized in that: The rotary motor (34), the push rod (33) and the conveyor motor (15) are all connected to the control console (5).

6. The composite steel pipe wall thickness detection device according to claim 5, characterized in that: The centerline of the horn roller (12) is aligned with the centerline of the ultrasonic detection assembly (4), the dual crystal probe (45) is located on the centerline, and the two pressure rollers (44) are symmetrically arranged on both sides of the centerline.

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