A device for detecting the inner and outer diameters of oil drill pipes

Abstract

This utility model relates to the field of testing equipment and discloses a device for detecting the inner and outer diameters of oil drill pipes. It includes a base plate, with first protrusions fixedly connected to both sides of the center of the upper surface of the base plate. Each of the two first protrusions has a first sliding groove on its adjacent side, and a first slider is slidably connected inside each of the two first sliding grooves. A second protrusion is fixedly connected to the rear of the upper surface of the base plate, with a second sliding groove on its front end face. A second slider is slidably connected inside the second sliding groove. The upper surfaces of the two first protrusions and the second protrusion share an upper cover plate. A first lead screw and a second lead screw are respectively installed inside the two first sliding grooves and the second sliding groove. In this utility model, by adjusting the height of the testing structure body, it can adapt to the testing requirements of drill pipes of different specifications, achieving dynamic adjustment of the device and facilitating rapid detection of various drill pipe inner and outer diameters.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, and in particular to a device for testing the inner and outer diameters of oil drill pipes. Background Technology

[0002] Oil drill pipe is an indispensable tool in oil exploration and extraction. Its quality and accuracy directly affect the safety and efficiency of drilling. Due to the complex working environment of the drill pipe downhole, it is subject to various loads such as tension, compression, bending, and torsion, which can easily lead to defects such as cracks and wear. Therefore, accurate detection of the inner and outer diameters of the drill pipe is particularly important. With the development of the petroleum industry and the increasing requirements for drill pipe quality, automated and intelligent oil drill pipe inner and outer diameter detection devices will be more widely used.

[0003] Currently, the inspection of oil drill pipes mainly relies on manual operation, which makes it difficult to achieve high-precision measurement of the inner and outer diameters of the drill pipes, resulting in large measurement errors. Furthermore, the equipment cannot be dynamically adjusted, making it inconvenient to quickly inspect various inner and outer diameters of drill pipes. Therefore, those skilled in the art have provided an oil drill pipe inner and outer diameter detection device to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an oil drill pipe inner and outer diameter detection device. By adjusting the height of the detection structure body, it can adapt to the detection requirements of drill pipes of different specifications, facilitating rapid detection of the inner and outer diameters of different drill pipes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for detecting the inner and outer diameters of oil drill pipes, comprising a base plate, wherein first protrusions are fixedly connected to both sides of the center of the upper end face of the base plate, and first sliding grooves are opened on the side of the two first protrusions that are close to each other, and first sliders are slidably connected inside the two first sliding grooves, and a second protrusion is fixedly connected to the rear of the upper end face of the base plate, wherein a second sliding groove is opened on the front end face of the second protrusion, and a second slider is slidably connected inside the second sliding groove, and an upper end cover plate is provided on the upper end face of the two first protrusions and the second protrusion, respectively, and a first lead screw and a second lead screw are respectively provided inside the two first sliding grooves and the second sliding groove, and pass through the upper inner wall of the first sliding grooves and the second sliding groove to the upper end face of the upper end cover plate, a first motor and a second motor are respectively provided on the upper end face of the two first lead screws and the second lead screw, and a detection structure body is provided between the two first sliders;

[0006] The detection structure body includes two connecting arms, which are fixedly connected to the center of one side of each of the two first sliders that are close to each other. An outer diameter laser detection structure is fixedly connected between the two connecting arms. An inner diameter laser detection structure is provided at the center of the rear end face of the outer diameter laser detection structure. A second connecting rod is provided at the rear end face of the inner diameter laser detection structure. The second connecting rod is fixedly connected to the center of the front end face of the second slider.

[0007] Through the above technical solution, the first motor drives the first lead screw to rotate. Since the first lead screw passes through the inner wall of the first slide groove to the upper end face of the upper cover plate, the rotation of the first lead screw will cause the first slider to slide up and down in the first slide groove. The second motor drives the second lead screw to rotate. Similarly, the rotation of the second lead screw will cause the second slider to slide up and down in the second slide groove. By sliding the first slider and the second slider up and down, the height of the detection structure body is adjusted to adapt to the detection requirements of drill rods of different specifications. The connecting arm in the detection structure body is connected to the first slider, and the inner diameter laser detection structure is connected to the second slider through the second connecting rod. When the drill rod moves to the bottom of the detection structure body, the outer diameter laser detection structure detects the outer diameter of the drill rod, and the inner diameter laser detection structure detects the inner diameter of the drill rod.

[0008] Furthermore, a test storage platform is fixedly connected to one side of the base plate near the front end. Two rectangular electric push rods to be tested are arranged at the front end of the upper surface of the base plate. Each of the two rectangular electric push rods to be tested is provided with a test guide plate on its upper surface. A second baffle is provided at both the front and rear ends of the upper surface of the test storage platform. Two third baffles are provided at the front and rear ends of the upper surface of the base plate near the test storage platform.

[0009] With the above technical solution, the test storage platform is prevented from rolling off by the third stop and the second baffle. The test rectangular electric push rod rises, driving the test guide plate to rise, lifting the drill rod on the test storage platform. The drill rod slides down along the test guide plate. At this time, the test rectangular electric push rod descends and places the drill rod on the third roller.

[0010] Furthermore, a tested storage platform is fixedly connected to the other side of the base plate near the front end. Two tested rectangular electric push rods are arranged between the two tested rectangular electric push rods on the upper surface of the base plate. A tested guide plate is provided on the upper surface of each of the two tested rectangular electric push rods. A first baffle is provided on the upper surface of the tested storage platform near the front end and near the rear end.

[0011] With the above technical solution, after the test is completed, the tested rectangular electric push rod rises, driving the tested guide plate to rise and lifting the drill rod. When the tested rectangular electric push rod rises above the first stop, the drill rod slides towards the tested storage platform under the action of gravity. The tested storage platform prevents the drill rod from rolling off through the first stop.

[0012] Furthermore, the upper surface of the base plate has three third protrusions arranged in front and behind the front and rear ends respectively. The two sides of the six third protrusions are fixedly connected to first connecting rods. The twelve first connecting rods are rotatably connected to two of each other. The other side of the twelve first connecting rods is provided with a third motor.

[0013] Through the above technical solution, the third roller is rotatably connected between the first connecting rods on both sides of the third boss on the base plate. The third motor drives the third roller to rotate, and the rotating third roller drives the drill rod to move towards the detection area where the detection structure body is located.

[0014] Furthermore, each of the two rectangular electric push rods to be tested is provided with a first stop bar at the end away from the storage platform to be tested, and the lower end face of the two first stop bars is fixedly connected to the upper end face of the base plate;

[0015] With the above technical solution, in the initial stage of the upward movement of the detected rectangular electric push rod, the first stop rod blocks the drill rod on the detected guide plate from sliding towards the detected storage platform, preventing the drill rod from colliding with the side wall of the detected storage platform.

[0016] Furthermore, a control device is provided on the side of the first protrusion near the tested storage platform that is away from the main body of the testing structure;

[0017] With the above technical solution, the control device is located on the side of the first protrusion near the tested storage platform that is away from the main body of the test structure, and is used to transmit the test data to the control device for processing and analysis.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, the height of the detection structure body is adjusted by sliding the first slider and the second slider up and down to adapt to the detection requirements of drill rods of different specifications, realize dynamic adjustment of the equipment, and facilitate rapid detection of the inner and outer diameters of various drill rods.

[0020] 2. In this utility model, the rectangular electric push rod to be tested rises, driving the guide plate to be tested to rise, lifting the drill rod on the storage platform to be tested, and the drill rod slides down along the guide plate to be tested, realizing automatic picking up of the drill rod to be tested for testing, thus improving work efficiency.

[0021] 3. In this utility model, the detected rectangular electric push rod rises, driving the detected guide plate to rise and lifting the drill rod. When the detected rectangular electric push rod rises above the first stop, the drill rod slides towards the detected storage platform under the action of gravity, realizing the automatic collection of the detected drill rod without manual collection, thus saving labor costs. Attached Figure Description

[0022] Figure 1 This is a perspective view of an oil drill pipe inner and outer diameter detection device proposed in this utility model;

[0023] Figure 2 This is a front view of an oil drill pipe inner and outer diameter detection device proposed in this utility model;

[0024] Figure 3 This is a side top view of an oil drill pipe inner and outer diameter detection device proposed in this utility model;

[0025] Figure 4 This is a front sectional view of an oil drill pipe inner and outer diameter detection device proposed in this utility model;

[0026] Figure 5 This is a rear sectional view of an oil drill pipe inner and outer diameter detection device proposed in this utility model;

[0027] Figure 6 This is a side view of an oil drill pipe inner and outer diameter detection device proposed in this utility model;

[0028] Figure 7 for Figure 1 Enlarged diagram of point A in the middle.

[0029] Legend:

[0030] 1. Base plate; 2. Tested storage platform; 3. First lead screw; 4. Test structure body; 5. Storage platform to be tested; 6. First boss; 7. Second lead screw; 8. Second slide groove; 9. Second slider; 10. First baffle; 11. Third motor; 12. First connecting rod; 13. Third boss; 14. Third roller; 15. Second baffle; 16. First motor; 17. Upper cover plate; 18. Second motor; 19. Tested guide plate; 20. Rectangular electric push rod to be tested; 21. First stop bar; 22. Guide plate to be tested; 23. Second protrusion; 24. Control device; 25. Tested rectangular electric push rod; 26. First slide groove; 27. First slider; 28. Third stop bar;

[0031] 401. Connecting arm; 402. Outer diameter laser detection structure; 403. Second connecting rod; 404. Inner diameter laser detection structure. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1-7 An embodiment of this utility model provides a device for detecting the inner and outer diameters of oil drill pipes, comprising a base plate 1, with first protrusions 6 fixedly connected to both sides of the center of the upper end face of the base plate 1, and first sliding grooves 26 formed on the side of the two first protrusions 6 that are close to each other, with first sliders 27 slidably connected inside the two first sliding grooves 26, and a second protrusion 23 fixedly connected to the rear of the upper end face of the base plate 1, with a second sliding groove 8 formed on the front end face of the second protrusion 23, and a second slider 9 slidably connected inside the second sliding groove 8, with an upper end cover plate 17 provided on the upper end faces of the two first protrusions 6 and the second protrusion 23, and a first lead screw 3 and a second lead screw 7 respectively provided inside the two first sliding grooves 26 and the second sliding groove 8, which pass through the upper inner walls of the first sliding grooves 26 and the second sliding groove 8 to the upper end face of the upper end cover plate 17, with a first motor 16 and a second motor 18 respectively provided on the upper end faces of the two first lead screws 3 and the second lead screw 7, and a detection structure body 4 provided between the two first sliders 27.

[0034] The detection structure body 4 includes two connecting arms 401, which are fixedly connected to the center of one side of each of the two first sliders 27 that are close to each other. An outer diameter laser detection structure 402 is fixedly connected between the two connecting arms 401. An inner diameter laser detection structure 404 is provided at the center of the rear end face of the outer diameter laser detection structure 402. A second connecting rod 403 is provided at the rear end face of the inner diameter laser detection structure 404. The second connecting rod 403 is fixedly connected to the center of the front end face of the second slider 9.

[0035] The first motor 16 drives the first lead screw 3 to rotate. Since the first lead screw 3 passes through the inner wall of the first slide groove 26 to the upper end face of the upper cover plate 17, the rotation of the first lead screw 3 will cause the first slider 27 to slide up and down in the first slide groove 26. The second motor 18 drives the second lead screw 7 to rotate. Similarly, the rotation of the second lead screw 7 will cause the second slider 9 to slide up and down in the second slide groove 8. By sliding the first slider 27 and the second slider 9 up and down, the height of the detection structure body 4 is adjusted to meet the detection requirements of drill rods of different specifications. The connecting arm 401 in the detection structure body 4 is connected to the first slider 27. The inner diameter laser detection structure 404 is connected to the second slider 9 through the second connecting rod 403. When the drill rod moves to the bottom of the detection structure body 4, the outer diameter laser detection structure 402 detects the outer diameter of the drill rod, and the inner diameter laser detection structure 404 detects the inner diameter of the drill rod.

[0036] like Figure 1 , 2As shown in Figures 3, 4, and 5, a test storage platform 5 is fixedly connected to one side of the base plate 1 near the front end. Two rectangular electric push rods 20 to be tested are arranged near the front end of the upper surface of the base plate 1. Each of the two rectangular electric push rods 20 to be tested is provided with a test guide plate 22 on its upper surface. The upper surface of the test storage platform 5 is provided with a second baffle 15 near the front and rear ends. The upper surface of the base plate 1 is provided with two third baffles 28 near the front and rear of the test storage platform 5. The test storage platform 5 is prevented from rolling the drill rod 2 by the third baffles 28 and the second baffles 15. When the rectangular electric push rod 20 to be tested rises, it drives the test guide plate 22 to rise, lifting the drill rod on the test storage platform 5. The drill rod slides down along the test guide plate 22. At this time, the rectangular electric push rod 20 to be tested descends and places the drill rod on the third roller 14.

[0037] On the other side of the base plate 1, near the front end, is a test storage platform 2. On the upper surface of the base plate 1, between the two rectangular electric push rods 20 to be tested, there are two tested rectangular electric push rods 25. The upper surface of each tested rectangular electric push rod 25 is provided with a test guide plate 19. The upper surface of the test storage platform 2 is provided with a first baffle 10 near the front end and the rear end. After the test is completed, the tested rectangular electric push rod 25 rises, driving the test guide plate 19 to rise and lifting the drill rod. When the tested rectangular electric push rod 25 rises above the first baffle 21, the drill rod slides towards the test storage platform 2 under the action of gravity. The test storage platform 2 prevents the drill rod from rolling off through the first baffle 10.

[0038] Three third protrusions 13 are arranged in a front-to-back manner on the upper surface of the base plate 1. First connecting rods 12 are fixedly connected to both sides of the six third protrusions 13. Third rollers 14 are rotatably connected between two first connecting rods 12 that are close to each other. Third motors 11 are provided on the other side of the twelve first connecting rods 12. Third rollers 14 are rotatably connected between the first connecting rods 12 on both sides of the third protrusions 13 on the base plate 1. The third motors 11 drive the third rollers 14 to rotate. The rotating third rollers 14 drive the drill rod to move towards the detection area where the detection structure body 4 is located.

[0039] Each of the two rectangular electric push rods 20 to be tested has a first stop rod 21 at the end away from the storage platform 5 to be tested. The lower end face of the two first stop rods 21 is fixedly connected to the upper end face of the base plate 1. In the initial stage of the rise of the rectangular electric push rod 25 to be tested, the first stop rod 21 blocks the drill rod on the guide plate 19 to slide towards the storage platform 2 to prevent the drill rod from colliding with the side wall of the storage platform 2.

[0040] A control device 24 is provided on the side of the first protrusion 6 near the tested storage platform 2 away from the test structure body 4. The control device 24 is located on the side of the first protrusion 6 near the tested storage platform 2 away from the test structure body 4, and is used to transmit the test data to the control device 24 for analysis and processing.

[0041] Working principle: When the test begins, the oil drill pipe to be tested is placed on the test storage platform 5. The test storage platform 5 prevents the drill pipe from rolling off through the third stop 28 and the second baffle 15. The rectangular electric push rod 20 to be tested rises, driving the test guide plate 22 to rise, lifting the drill pipe on the test storage platform 5. The drill pipe slides down along the test guide plate 22. At this time, the rectangular electric push rod 20 to be tested descends and places the drill pipe on the third roller 14.

[0042] The drill rod is transported to the testing area. The third roller 14 is rotatably connected between the first connecting rods 12 on both sides of the third boss 13 on the base plate 1. The third motor 11 drives the third roller 14 to rotate 4. The rotating third roller 14 drives the drill rod to move towards the testing area where the testing structure body 4 is located.

[0043] The detection structure is adjusted and its inner and outer diameters are measured. The first motor 16 drives the first lead screw 3 to rotate. Since the first lead screw 3 passes through the inner wall of the first slide groove 26 to the upper end face of the upper cover plate 17, the rotation of the first lead screw 3 causes the first slider 27 to slide up and down within the first slide groove 26. The second motor 18 drives the second lead screw 7 to rotate. Similarly, the rotation of the second lead screw 7 causes the second slider 9 to slide up and down within the second slide groove 8. Through the up-and-down sliding of the first slider 27 and the second slider 9, the height of the detection structure body 4 is adjusted to accommodate drill pipes of different specifications. To meet the testing requirements, the connecting arm 401 in the main body 4 of the detection structure is connected to the first slider 27, and the inner diameter laser detection structure 404 is connected to the second slider 9 through the second connecting rod 403. When the drill rod moves below the main body 4 of the detection structure, the outer diameter laser detection structure 402 detects the outer diameter of the drill rod, and the inner diameter laser detection structure 404 detects the inner diameter of the drill rod. The control device 24 is located on the side 6 of the first boss 6 near the detected storage platform 2 away from the main body 4 of the detection structure, and transmits the detection data to the control device 24 for analysis and processing.

[0044] After the test is completed, the tested rectangular electric push rod 25 rises, driving the tested guide plate 19 to rise and lifting the drill rod. In the initial stage of the tested rectangular electric push rod 25 rising, the first stop 21 prevents the drill rod on the tested guide plate 19 from sliding towards the tested storage platform 2, preventing the drill rod from colliding with the side wall of the tested storage platform 2. When the tested rectangular electric push rod 25 rises above the first stop 21, the drill rod slides towards the tested storage platform 2 under the action of gravity. The tested storage platform 2 prevents the drill rod from rolling off 3 through the first baffle 10.

[0045] After completing one drill pipe inspection, the device returns to its initial state and waits for the next drill pipe to be inspected. The above steps are repeated to achieve continuous inspection of drill pipes.

[0046] A laser tube generates a laser beam, which is reflected by a mirror onto a uniformly rotating octagonal prism. The beam then passes through a concave lens to form a parallel scanning beam in the measurement area. After passing through the measurement area, the beam is received by a photocell. When the workpiece enters the measurement area, part of the laser is blocked. The change in the light energy received by the photocell causes a change in the output voltage signal. By measuring the time difference between the bottom and top sides of the workpiece when the beam sweeps across, and combining this with the scanning speed, the outer diameter of the workpiece can be calculated. This is a commonly used technique in the prior art and will not be elaborated on further here.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An apparatus for detecting the inner and outer diameters of an oil drill pipe, comprising a base plate (1), characterized in that: The upper end face of the base plate (1) is fixedly connected to two sides of the center of the base plate (1). Each of the two first protrusions (6) has a first groove (26) on its side closest to each other. Each of the two first grooves (26) has a first slider (27) slidably connected inside it. The upper end face of the base plate (1) is fixedly connected to a second protrusion (23) at the rear. The front end face of the second protrusion (23) has a second groove (8). Each of the second grooves (8) has a second slider (9) slidably connected inside it. The two first protrusions (6)... 6) An upper cover plate (17) is provided together with the upper end face of the second protrusion (23). The two first slide grooves (26) and the second slide groove (8) are respectively provided with a first lead screw (3) and a second lead screw (7), and pass through the upper inner wall of the first slide groove (26) and the second slide groove (8) to the upper end face of the upper cover plate (17). The upper end faces of the two first lead screws (3) and the second lead screws (7) are respectively provided with a first motor (16) and a second motor (18). A detection structure body (4) is provided between the two first sliders (27). The detection structure body (4) includes two connecting arms (401). The two connecting arms (401) are fixedly connected to the center of one side of the two first sliders (27) that are close to each other. An outer diameter laser detection structure (402) is fixedly connected between the two connecting arms (401). An inner diameter laser detection structure (404) is provided at the center of the rear end face of the outer diameter laser detection structure (402). A second connecting rod (403) is provided at the rear end face of the inner diameter laser detection structure (404). The second connecting rod (403) is fixedly connected to the center of the front end face of the second slider (9).

2. The device for detecting the inner and outer diameters of an oil drill pipe according to claim 1, characterized in that: A test storage platform (5) is fixedly connected to one side of the base plate (1) near the front end. Two rectangular electric push rods (20) to be tested are arranged at the front end of the upper surface of the base plate (1). The upper surface of the two rectangular electric push rods (20) to be tested is provided with a test guide plate (22). The upper surface of the test storage platform (5) is provided with a second baffle (15) near the front end and the rear end. The upper surface of the base plate (1) is provided with two third baffles (28) near the front and rear of the test storage platform (5).

3. The device for detecting the inner and outer diameters of an oil drill pipe according to claim 1, characterized in that: The other side of the base plate (1) is fixedly connected to the front end of the tested storage platform (2). The upper end of the base plate (1) is arranged with two tested rectangular electric push rods (25) between the two tested rectangular electric push rods (20). The upper end of the two tested rectangular electric push rods (25) is provided with a tested guide plate (19). The upper end of the tested storage platform (2) is provided with a first baffle (10) at both the front end and the rear end.

4. The device for detecting the inner and outer diameters of an oil drill pipe according to claim 1, characterized in that: The upper surface of the base plate (1) has three third protrusions (13) arranged in front and back, respectively, near the front and rear ends. The two sides of the six third protrusions (13) are fixedly connected to first connecting rods (12). The two first connecting rods (12) that are close to each other are rotatably connected to third rollers (14). The other side of the twelve first connecting rods (12) is provided with a third motor (11).

5. The device for detecting the inner and outer diameters of an oil drill pipe according to claim 2, characterized in that: Each of the two rectangular electric push rods (20) to be tested has a first stop (21) at one end away from the storage platform (5) to be tested, and the lower end face of the two first stop rods (21) is fixedly connected to the upper end face of the base plate (1).

6. The device for detecting the inner and outer diameters of an oil drill pipe according to claim 3, characterized in that: A control device (24) is provided on the side of the first protrusion (6) near the tested storage platform (2) away from the test structure body (4).

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