A device for detecting the thickness of a zinc coating on a zinc-coated pipe

Abstract

The utility model relates to galvanized pipe detection technical field discloses a kind of galvanized pipe galvanization thickness detection device, including the circular ring being adapted to galvanized pipe, gear ring is rotatably equipped on the circular ring, rotating mechanism is equipped on the circular ring, and the rotating mechanism drives gear ring rotation, support plate is equipped on the gear ring, and two sides are arranged correspondingly, the utility model is compared with prior art, and the advantages are as follows: by being set with the circular ring being adapted to galvanized pipe, probe and detector on it are fixed on galvanized pipe, by setting rotating mechanism, gear ring, support plate, support rod, torsional spring, mounting hole and control mechanism, probe can be fixed in mounting hole, probe is driven along galvanized pipe rotation by rotating mechanism, by setting control mechanism, so that probe and galvanized pipe surface contact in specific position, so as to realize the multipoint detection of galvanized pipe, simultaneously set cleaning mechanism, so that galvanized pipe surface can be cleaned before detection, prevent that there is impurity influence detection result.

Description

Technical Field

[0001] This utility model relates to the field of galvanized pipe testing technology, specifically to a device for testing the zinc plating thickness of galvanized pipes. Background Technology

[0002] Galvanized steel pipes are welded steel pipes with a hot-dip galvanized or electro-galvanized coating on their surface. Galvanizing increases the corrosion resistance of the steel pipe and extends its service life. Galvanized pipes have a wide range of applications. In addition to being used as pipelines for transporting general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially in offshore oil fields. A galvanization thickness testing device is required at the factory when the pipe leaves the factory.

[0003] The thickness of the zinc coating on galvanized pipes is generally measured using a zinc coating thickness gauge. Before using the gauge, it needs to be calibrated. After calibration, the gauge is moved to the galvanized pipe to be tested, and impurities on the surface of the test point are removed. Then, the probe is placed on the test point, and the result displayed by the gauge is used to determine whether the zinc coating thickness is up to standard. To improve the accuracy of the test, multiple points on the galvanized pipe are usually tested. Manually cleaning impurities on the surface of the galvanized pipe and manually pressing the probe onto the surface is cumbersome and reduces testing efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem this invention aims to solve is that manually cleaning impurities from the surface of galvanized pipes and manually pressing the probe onto the surface of the galvanized pipes are cumbersome and reduce testing efficiency when inspecting multiple points on galvanized pipes.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a galvanized pipe galvanization thickness detection device, including a ring adapted to the galvanized pipe, a toothed ring rotatably provided on the ring, a rotating mechanism for driving the toothed ring to rotate on the ring, support plates arranged on both sides of the toothed ring, a support rod rotatably provided on the support plate, a torsion spring provided between the support rod and the support plate, a mounting hole for inserting a probe on the support rod, a control mechanism for controlling the rotation of the support rod to make the probe fit against the surface of the galvanized pipe on one side of the ring, and a cleaning mechanism for cleaning the surface of the galvanized pipe on the toothed ring.

[0008] As an improvement, the control mechanism includes an extension column on a ring, one end of which is provided with a control ring, and an array of arc-shaped grooves are provided inside the control ring. A sphere that fits into the arc-shaped groove is provided on the support rod. When the sphere moves on the arc-shaped groove, it will first approach the galvanized pipe and then move away from the galvanized pipe.

[0009] As an improvement, the cleaning mechanism includes an L-shaped extension rod on a toothed ring, a pin movably inserted into the L-shaped extension rod, a brush at one end of the pin, and a spring between the pin and the L-shaped extension rod.

[0010] As an improvement, the rotating mechanism includes a fixed plate on a ring, a gear that meshes with a gear ring is rotatably mounted on the fixed plate, and a motor that drives the gear to rotate is mounted on the fixed plate.

[0011] As an improvement, a mounting ring is rotatably provided on the control ring, and clamps are arranged on both sides of the mounting ring. The detector body is fixed to the mounting ring by the clamps, and the clamps are fixed to the detector body by bolts.

[0012] As an improvement, the sphere is provided with a drive rod, and the mounting ring is provided with a U-shaped rod that cooperates with the drive rod.

[0013] As an improvement, the cleaning mechanism is positioned in front of the support rod in the direction of rotation.

[0014] (III) Beneficial Effects

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] By setting a ring that fits the galvanized pipe, the probe and detector are fixed to the galvanized pipe. By setting a rotating mechanism, toothed ring, support plate, support rod, torsion spring, mounting hole and control mechanism, the probe can be fixed in the mounting hole. The rotating mechanism drives the probe to rotate along the galvanized pipe. By setting a control mechanism, the probe can be made to contact the surface of the galvanized pipe at a specific position, so as to realize multi-point detection of the galvanized pipe. At the same time, a cleaning mechanism is set to clean the surface of the galvanized pipe before detection to prevent impurities from affecting the detection results. Attached Figure Description

[0017] Figure 1 This is a perspective view of a galvanized pipe galvanization thickness detection device according to the present invention.

[0018] Figure 2 This is an exploded view of a galvanized pipe galvanization thickness detection device according to this utility model.

[0019] Figure 3 This is a front view of a galvanized pipe galvanization thickness detection device according to this utility model.

[0020] Figure 4 This utility model relates to a device for detecting the zinc plating thickness of galvanized pipes. Figure 4 The sectional view corresponding to the section line at point AA.

[0021] Figure 5 This is an enlarged view of section A of the galvanized pipe galvanization thickness detection device of this utility model.

[0022] Figure 6 This is a front view of the control ring of a galvanized pipe galvanization thickness detection device according to this utility model.

[0023] As shown in the figure: 1. Circular ring; 2. Gear ring; 3. Rotating mechanism; 4. Support plate; 5. Support rod; 6. Torsion spring; 7. Mounting hole; 8. Control mechanism; 9. Cleaning mechanism; 10. Extension column; 11. Control ring; 12. Arc groove; 13. Sphere; 14. L-shaped extension rod; 15. Insert post; 16. Brush; 17. Spring; 18. Fixing plate; 19. Gear; 20. Motor; 21. Mounting ring; 22. Clamping plate; 23. Drive rod; 24. U-shaped rod. Detailed Implementation

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

[0025] As per the instructions Figures 1 to 4 As shown, a galvanized pipe galvanization thickness detection device includes a circular ring 1 adapted to the galvanized pipe, a toothed ring 2 rotatably mounted on the circular ring 1, a rotating mechanism 3 for driving the toothed ring 2 to rotate on the circular ring 1, support plates 4 arranged on both sides of the toothed ring 2, a support rod 5 rotatably mounted on the support plate 4, a torsion spring 6 between the support rod 5 and the support plate 4, a mounting hole 7 for inserting a probe on the support rod 5, a control mechanism 8 on one side of the circular ring 1 for controlling the rotation of the support rod 5 to make the probe fit against the surface of the galvanized pipe, and a cleaning mechanism 9 for cleaning the surface of the galvanized pipe on the toothed ring 2, the cleaning mechanism 9 being located in front of the support rod 5 in the direction of rotation;

[0026] When it is necessary to test the galvanization thickness of a galvanized pipe, first fix the galvanized pipe, then suspend one end in the air, and then fit the matching ring 1 onto the galvanized pipe. Then calibrate the tester. After calibration, insert the probe into the mounting hole 7 and fix it, which can be done with bolts. Then slide the ring 1 to the designated position and hold the ring 1 by hand to limit its position, which also facilitates subsequent position changes. Then start the rotating mechanism 3, which drives the toothed ring 2 to rotate. The rotation of the toothed ring 2 drives the cleaning mechanism 9, which cleans the area to be tested, sweeping away impurities. Then the toothed ring 2 drives the support rod 5 to rotate. Under the action of the control mechanism 8, the probe will periodically contact the galvanized pipe, thereby realizing multiple point detection and improving the accuracy of the test results. After this part is tested, by pushing the ring 1 to move on the galvanized pipe, multiple points at different locations can be tested.

[0027] As per the instructions Figures 2 to 6 As shown, the control mechanism 8 includes an extension column 10 on a ring 1. One end of the extension column 10 is provided with a control ring 11. The control ring 11 is provided with an array of arc-shaped grooves 12. The support rod 5 is provided with a ball 13 that fits into the arc-shaped groove 12. When the ball 13 moves on the arc-shaped groove 12, it will first approach the galvanized pipe and then move away from the galvanized pipe. In order to enable the probe to periodically fit into the galvanized pipe, the arc-shaped groove 12 is provided. When the toothed ring 2 rotates, it will drive the ball 13 on the support rod 5 to rotate. The ball 13 will slide along the circumference on the surface of the arc-shaped groove 12. At this time, the ball 13 will gradually approach the galvanized pipe and fit into it during the sliding process, and then gradually move away from it, thereby realizing the detection of the galvanized thickness of the galvanized pipe. The torsion spring 6 can make the ball 13 always fit into the surface of the arc-shaped groove 12.

[0028] The cleaning mechanism 9 includes an L-shaped extension rod 14 on the toothed ring 2. A pin 15 is movably inserted into the L-shaped extension rod 14. A brush 16 is provided at one end of the pin 15. A spring 17 is provided between the pin 15 and the L-shaped extension rod 14. When the ring 1 is placed on the galvanized pipe, the pin 15 is moved to move the brush 16 away from the galvanized pipe. When the brush 16 is on the galvanized pipe, the pin 15 is released, and the spring 17 pushes the pin 15 to move, so that the brush 16 is tightly attached to the surface of the galvanized pipe. Since the cleaning mechanism 9 is located in front of the support rod 5 in the direction of rotation, when the test is performed, the toothed ring 2 drives the L-shaped extension rod 14 to rotate, and the L-shaped extension rod 14 drives the brush 16 to clean the surface of the galvanized pipe, thereby facilitating the probe behind to attach to the surface of the galvanized pipe for testing.

[0029] The rotating mechanism 3 includes a fixed plate 18 on the ring 1, a gear 19 that meshes with the gear ring 2 is rotatably mounted on the fixed plate 18, and a motor 20 that drives the gear 19 to rotate is mounted on the fixed plate 18. When the gear ring 2 needs to rotate, the motor 20 is started, the motor 20 drives the gear 19 to rotate, and the gear 19 drives the gear ring 2 that meshes with it to rotate.

[0030] The control ring 11 is rotatably provided with a mounting ring 21, and the mounting ring 21 is provided with clamping plates 22 arranged on both sides. The detector body is fixed to the mounting ring 21 by the clamping plates 22. The clamping plates 22 are fixed to the detector body by bolts. When the probe is fixed in the mounting hole 7, the detector is not yet fixed. By setting the mounting ring 21 and clamping plates 22 on the control ring 11, the detector can be placed between the two clamping plates 22, and then the detector is fixed by bolts.

[0031] The sphere 13 is provided with a drive rod 23, and the mounting ring 21 is provided with a U-shaped rod 24 that cooperates with the drive rod 23. In order to enable the detector body to rotate together with the probe, the U-shaped rod 24 and the drive rod 23 are set. Since the drive rod 23 will slide back and forth near and away from the galvanized pipe during the rotation, the U-shaped rod 24 is set to make active contact with the drive rod 23 to accommodate the back and forth sliding of the drive rod 23.

[0032] In practical use, the galvanized pipe to be tested is first hoisted up, then the ring 1 is placed on the galvanized pipe, and then the galvanized pipe is hoisted onto the support base, so that the galvanized pipe is suspended in the air. Then the detector is calibrated. After calibration, the probe and detector are fixed on the mounting hole 7 and the clamp 22 respectively. Then the ring 1 is slid to the detection position, and the ring 1 is manually held. Then the rotating mechanism 3 is started. The rotating mechanism 3 drives the toothed ring 2 to rotate. The toothed ring 2 drives the cleaning mechanism 9 and the support rod 5. Thus, the cleaning mechanism 9 cleans the surface of the galvanized pipe. Under the control of the control mechanism 8, the support rod 5 periodically contacts the surface of the galvanized pipe, so as to detect the galvanized thickness at multiple points. After the detection of one position is completed, the ring 1 is slid to the next position and the detection continues. After the detection is completed, the detector and probe are removed, the galvanized pipe is hoisted up, and the ring 1 is removed to complete the detection of the galvanized thickness of the galvanized pipe.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0034] 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.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for detecting the zinc plating thickness of a galvanized pipe, comprising a ring (1) adapted to the galvanized pipe, characterized in that: A toothed ring (2) is rotatably mounted on the ring (1). A rotating mechanism (3) for driving the toothed ring (2) to rotate is provided on the ring (1). Support plates (4) are arranged on both sides of the toothed ring (2). A support rod (5) is rotatably mounted on the support plate (4). A torsion spring (6) is provided between the support rod (5) and the support plate (4). An installation hole (7) for inserting a probe is provided on the support rod (5). A control mechanism (8) for controlling the rotation of the support rod (5) to make the probe fit against the surface of the galvanized pipe is provided on one side of the ring (1). A cleaning mechanism (9) for cleaning the surface of the galvanized pipe is provided on the toothed ring (2).

2. The galvanized pipe galvanized thickness detection device according to claim 1, characterized in that: The control mechanism (8) includes an extension column (10) on a ring (1), a control ring (11) is provided at one end of the extension column (10), an array of arc grooves (12) are provided in the control ring (11), and a ball (13) is provided on the support rod (5) to fit with the arc groove (12). When the ball (13) moves on the arc groove (12), it will first approach the galvanized pipe and then move away from the galvanized pipe.

3. The galvanized pipe galvanized thickness detection device according to claim 1, characterized in that: The cleaning mechanism (9) includes an L-shaped extension rod (14) on a toothed ring (2), a pin (15) is movably inserted into the L-shaped extension rod (14), a brush (16) is provided at one end of the pin (15), and a spring (17) is provided between the pin (15) and the L-shaped extension rod (14).

4. The galvanized pipe galvanized thickness detection device according to claim 1, characterized in that: The rotating mechanism (3) includes a fixed plate (18) on a ring (1), a gear (19) that meshes with a toothed ring (2) is rotatably provided on the fixed plate (18), and a motor (20) that drives the gear (19) to rotate is provided on the fixed plate (18).

5. The galvanized pipe galvanized thickness detection device according to claim 2, characterized in that: The control ring (11) is rotatably provided with an installation ring (21), and the installation ring (21) is provided with clamps (22) arranged on both sides. The detector body is fixed on the installation ring (21) by the clamps (22), and the clamps (22) are fixed to the detector body by bolts.

6. The galvanized pipe galvanized thickness detection device according to claim 5, characterized in that: The sphere (13) is provided with a drive rod (23), and the mounting ring (21) is provided with a U-shaped rod (24) that cooperates with the drive rod (23).

7. The galvanized pipe galvanized thickness detection device according to claim 5, characterized in that: The cleaning mechanism (9) is located in front of the support rod (5) in the direction of rotation.

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