An online wall thickness detection device for steel pipe production

Abstract

This utility model discloses an online wall thickness detection device for steel pipe production, relating to the field of steel pipe testing technology. The device includes a U-shaped base, with an upper shell fixedly connected to the top of the U-shaped base. A stepper motor is mounted on the outer surface of the upper shell, and a lead screw is mounted on the output end of the stepper motor. A sliding seat is threaded onto the outer surface of the lead screw. A second cylinder and a third cylinder are fixedly connected to the lower surface of the sliding seat. An I-shaped connecting frame is fixedly connected to the bottom of the second cylinder, and a connecting plate is mounted at the bottom of the I-shaped connecting frame. A cleaning brush is fixedly connected to the lower surface of the connecting plate, and a wiping cloth is mounted on the outer surface of the connecting plate. An ultrasonic thickness gauge is mounted at the bottom of the third cylinder. This utility model can clean the surface of the steel pipe before testing, effectively removing dirt and improving the accuracy of wall thickness detection. It can also automatically detect the wall thickness at multiple locations on the steel pipe.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe testing technology, specifically to an online wall thickness testing device for steel pipe production. Background Technology

[0002] As an indispensable basic raw material in modern industrial systems, the quality parameters of steel pipes directly affect the safety and reliability of downstream applications. Among these, wall thickness uniformity, as one of the most important quality indicators, has a decisive impact on the product's mechanical properties, structural stability, and service life. Specifically, wall thickness uniformity not only determines the basic mechanical properties of steel pipes such as tensile strength and yield strength, but also directly affects key performance characteristics such as pressure resistance, deformation resistance, and fatigue life. In applications such as oil and gas transportation, high-pressure boilers, and building structures, uneven wall thickness can lead to serious consequences such as stress concentration, localized deformation, and even structural failure. Therefore, wall thickness testing is necessary during the steel pipe manufacturing process.

[0003] Traditional wall thickness testing usually involves manual measurement of steel pipes point by point using thickness measuring tools. This method is not only inefficient but also susceptible to human error, leading to inaccurate results. Furthermore, since oil, impurities, and other contaminants may adhere to the surface of steel pipes during production, if these contaminants are not cleaned before testing, they may interfere with the accuracy of the measuring tools, further affecting the accuracy of wall thickness testing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an online wall thickness detection device for steel pipe production, which solves the problems mentioned in the background art, such as the low efficiency of traditional manual thickness measurement, susceptibility to human error, and insufficient measurement accuracy due to surface contaminants.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an online wall thickness detection device for steel pipe production, comprising a U-shaped base, an upper housing fixedly connected to the top of the U-shaped base, a stepper motor mounted on the outer surface of the upper housing, a lead screw mounted on the output end of the stepper motor, a sliding seat threadedly connected to the outer surface of the lead screw, a second cylinder and a third cylinder fixedly connected to the lower surface of the sliding seat, an I-shaped connecting frame fixedly connected to the bottom of the second cylinder, a connecting plate mounted at the bottom of the I-shaped connecting frame, a cleaning brush fixedly connected to the lower surface of the connecting plate, a wiping cloth mounted on the outer surface of the connecting plate, and an ultrasonic thickness gauge mounted at the bottom of the third cylinder.

[0006] Preferably, the ultrasonic thickness gauge has a detection probe at its bottom, and the cleaning brush is located on the side of the wiping cloth away from the ultrasonic thickness gauge.

[0007] Preferably, the end of the lead screw away from the stepper motor is rotatably connected to the inner wall of the upper housing, and a controller is provided on the outer surface of the U-shaped base.

[0008] Preferably, a first cylinder is fixedly connected to the inner wall of the U-shaped base, and a fixing plate is fixedly connected to the output end of the first cylinder.

[0009] Preferably, a rubber pad is provided on the side of the fixing plate away from the first cylinder, and a pressure sensor is provided in the groove on the outer surface of the rubber pad. The first cylinder, the fixing plate and the rubber pad are arranged opposite each other on the inner wall of the U-shaped base.

[0010] Preferably, the upper surface of the connecting plate is provided with an inverted T-shaped groove, and the bottom of the I-shaped connecting frame is adapted to the inside of the inverted T-shaped groove.

[0011] Beneficial effects

[0012] This utility model provides an online wall thickness detection device for steel pipe production. It has the following advantages:

[0013] 1. This online wall thickness detection device for steel pipe production uses a stepper motor, lead screw, and sliding seat to drive the cleaning brush and wiping cloth to move. It can clean the surface of the steel pipe before detection, effectively removing dirt from the surface of the steel pipe, thereby improving the accuracy of wall thickness detection. In addition, the detachable design between the connecting plate and the I-shaped connecting frame allows the connecting plate, along with the cleaning brush and wiping cloth, to be easily disassembled for cleaning and reuse.

[0014] 2. This online wall thickness detection device for steel pipe production, through the cooperation of a stepper motor, lead screw and sliding seat, can also drive the ultrasonic thickness gauge to move, and can automatically detect the wall thickness at multiple positions of the steel pipe. It can accurately capture the thickness fluctuations in various areas of the pipe body, and improve the detection comprehensiveness of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the U-shaped base of this utility model;

[0017] Figure 3 This is a schematic diagram of the upper shell of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the sliding seat of this utility model.

[0019] In the diagram: 1. U-shaped base; 2. Controller; 3. First cylinder; 4. Fixing plate; 5. Rubber pad; 6. Pressure sensor; 7. Upper housing; 8. Stepper motor; 9. Lead screw; 10. Sliding seat; 11. Second cylinder; 12. Third cylinder; 13. I-shaped connecting frame; 14. Connecting plate; 15. Cleaning brush; 16. Wiping cloth; 17. Ultrasonic thickness gauge; 18. Detection probe; 19. Inverted T-slot. Detailed Implementation

[0020] 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.

[0021] like Figure 1-4 As shown, this utility model provides an online wall thickness detection device for steel pipe production, including a U-shaped base 1, an upper shell 7 fixedly connected to the top of the U-shaped base 1, a stepper motor 8 provided on the outer surface of the upper shell 7, a lead screw 9 provided at the output end of the stepper motor 8, a sliding seat 10 threadedly connected to the outer surface of the lead screw 9, a second cylinder 11 and a third cylinder 12 fixedly connected to the lower surface of the sliding seat 10, an I-shaped connecting frame 13 fixedly connected to the bottom end of the second cylinder 11, a connecting plate 14 provided at the bottom of the I-shaped connecting frame 13, a cleaning brush 15 fixedly connected to the lower surface of the connecting plate 14, a wiping cloth 16 provided on the outer surface of the connecting plate 14, and an ultrasonic thickness gauge 17 provided at the bottom end of the third cylinder 12.

[0022] Specifically, the ultrasonic thickness gauge 17 has a detection probe 18 at its bottom and a cleaning brush 15 on the side of the wiping cloth 16 away from the ultrasonic thickness gauge 17. The cleaning brush 15 and the wiping cloth 16 are used to pre-treat the surface of the steel pipe before detection, remove dirt, oil stains and other factors that may affect the measurement results, and ensure that the detection probe 18 can accurately obtain the steel pipe wall thickness data.

[0023] Specifically, the end of the lead screw 9 away from the stepper motor 8 is rotatably connected to the inner wall of the upper housing 7. The outer surface of the U-shaped base 1 is equipped with a controller 2. The stepper motor 8 controls the rotation of the lead screw 9, which drives the sliding seat 10 to move along the lead screw 9, thereby realizing the lateral movement of the ultrasonic thickness gauge 17, the cleaning brush 15 and the wiping cloth 16 on the surface of the steel pipe.

[0024] Specifically, a first cylinder 3 is fixedly connected to the inner wall of the U-shaped base 1, and a fixing plate 4 is fixedly connected to the output end of the first cylinder 3. The fixing plate 4 is used to clamp the steel pipe to ensure that the steel pipe can remain stable during the testing process, thereby improving the accuracy of the measurement.

[0025] Specifically, a rubber pad 5 is provided on the side of the fixing plate 4 away from the first cylinder 3. A pressure sensor 6 is provided in the groove on the outer surface of the rubber pad 5. The first cylinder 3, the fixing plate 4, and the rubber pad 5 are arranged opposite each other on the inner wall of the U-shaped base 1. The rubber pad 5 is provided to increase the contact area and friction between the fixing plate 4 and the steel pipe, preventing the steel pipe from sliding or rotating during the testing process. At the same time, the rubber pad 5 also has a certain elasticity, which can buffer the clamping force of the first cylinder 3 and avoid damage to the steel pipe.

[0026] Specifically, the upper surface of the connecting plate 14 is provided with an inverted T-shaped groove 19, and the bottom of the I-shaped connecting frame 13 is adapted to the inside of the inverted T-shaped groove 19. The connecting plate 14 is connected to the I-shaped connecting frame 13 through the inverted T-shaped groove 19, forming a detachable structure. This design makes it convenient for users to replace or clean the cleaning brush 15 and the wiping cloth 16 as needed.

[0027] The working principle of the above embodiments:

[0028] In use, the steel pipe is placed inside the U-shaped base 1. The controller 2 controls the extension of the two sets of first cylinders 3, which moves the fixing plate 4 and rubber pad 5, pressing the rubber pad 5 against the outer surface of the steel pipe. When the pressure sensor 6 detects that the pressure value has reached the preset value, it transmits a signal to the controller 2. The controller 2 then controls the first cylinders 3 to stop extending. The steel pipe is clamped and fixed by the clamping module consisting of the first cylinders 3 on both sides, the fixing plate 4, and the rubber pad 5. The rubber pad 5 is used to prevent wear on the steel pipe caused by rigid contact and to increase the friction of the contact surface, thus improving the clamping effect. Next, the controller 2 controls the extension of the second cylinder 11, which moves the cleaning brush 15 and the wiping cloth 16 to contact the surface of the steel pipe. The stepper motor 8 drives the lead screw 9 to rotate, causing the sliding seat 10 to move along the lead screw 9 towards the side where the cleaning brush 15 is located. This allows the cleaning brush 15 to clean the dirt off the surface of the steel pipe. The wiping cloth 16 then further wipes and cleans the steel pipe, ensuring that the surface of the steel pipe is thoroughly cleaned. Finally, the controller controls the extension of the third cylinder 12, which moves the first cylinder 3 to move the first cylinder 4 and the rubber pad 5 to the second cylinder 11 to the second cylinder 11. The ultrasonic thickness gauge 17 moves downwards until the detection probe 18 contacts the cleaned surface of the steel pipe. The ultrasonic thickness gauge 17 then measures the wall thickness of the steel pipe. Because the surface contaminants of the steel pipe are cleaned, the detection accuracy is significantly improved. By controlling the stepper motor 8, the ultrasonic thickness gauge 17 can be driven to detect at multiple positions, improving the detection effect. The I-shaped connecting frame 13 has a structure that is wider at the top and narrower at the bottom. One end of the inverted T-shaped groove 19 extends to the side of the connecting plate 14 near the ultrasonic thickness gauge 17. With one end open and the other closed, the connecting plate 14 can be installed by aligning the open end of the inverted T-groove 19 on the connecting plate 14 with the bottom of the I-shaped connecting frame 13 and moving the connecting plate 14 horizontally so that the bottom of the I-shaped connecting frame 13 is inserted into the inverted T-groove 19. The connecting plate 14 can be removed from the bottom of the I-shaped connecting frame 13 by moving the connecting plate 14 in the opposite direction. By designing this detachable structure, the connecting plate 14 can be easily removed to clean the cleaning brush 15 and wiping cloth 16 on the connecting plate 14.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An on-line wall thickness detection device for steel pipe production, comprising a U-shaped base (1), characterized in that: The top of the U-shaped base (1) is fixedly connected to an upper housing (7). A stepper motor (8) is provided on the outer surface of the upper housing (7). A lead screw (9) is provided at the output end of the stepper motor (8). A sliding seat (10) is threadedly connected to the outer surface of the lead screw (9). A second cylinder (11) and a third cylinder (12) are fixedly connected to the lower surface of the sliding seat (10). An I-shaped connecting frame (13) is fixedly connected to the bottom end of the second cylinder (11). A connecting plate (14) is provided at the bottom of the I-shaped connecting frame (13). A cleaning brush (15) is fixedly connected to the lower surface of the connecting plate (14). A wiping cloth (16) is provided on the outer surface of the connecting plate (14). An ultrasonic thickness gauge (17) is provided at the bottom end of the third cylinder (12).

2. An on-line thickness detection device for a steel pipe production according to claim 1, characterized in that: The ultrasonic thickness gauge (17) is equipped with a detection probe (18) at its bottom, and the cleaning brush (15) is located on the side of the wiping cloth (16) away from the ultrasonic thickness gauge (17).

3. An on-line thickness detection device for a steel pipe production according to claim 1, characterized in that: The end of the lead screw (9) away from the stepper motor (8) is rotatably connected to the inner wall of the upper housing (7), and the outer surface of the U-shaped base (1) is provided with a controller (2).

4. An on-line thickness detection device for a steel pipe production according to claim 1, characterized in that: The inner wall of the U-shaped base (1) is fixedly connected to a first cylinder (3), and the output end of the first cylinder (3) is fixedly connected to a fixing plate (4).

5. An on-line thickness detection device for a steel pipe production according to claim 4, characterized in that: A rubber pad (5) is provided on the side of the fixing plate (4) away from the first cylinder (3). A pressure sensor (6) is provided in the groove on the outer surface of the rubber pad (5). The first cylinder (3), the fixing plate (4) and the rubber pad (5) are arranged opposite to each other on the inner wall of the U-shaped base (1).

6. An on-line thickness detection device for a steel pipe production according to claim 1, characterized in that: The upper surface of the connecting plate (14) is provided with an inverted T-shaped groove (19), and the bottom of the I-shaped connecting frame (13) is adapted to the interior of the inverted T-shaped groove (19).

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