Inner wall cambered surface detection device for oil pipe

Abstract

The utility model relates to the technical field of oil pipe detection, in particular to an inner wall cambered surface detection device for an oil pipe, which comprises a base and a lever detection head rotatably arranged on the base, a first boss is arranged on the top surface of the base, a second boss is arranged on the top surface of the first boss, a distance sensor is arranged on the top surface of the base, and the distance sensor is arranged on the top surface of the base. The lever detection head is installed on the second boss. The lever detection head is rotatably arranged on the second boss, one end, facing the distance sensor, of the bottom surface of the lever detection head is provided with a horizontal abutting surface, and the distance sensor abuts against the horizontal abutting surface; the end, away from the horizontal abutting face, of the bottom face of the lever detection head is provided with an inclined abutting face, one side of the base is provided with a pneumatic telescopic rod, and a telescopic head in the pneumatic telescopic rod abuts against the inclined abutting face. The top surface of the lever detection head is detachably connected with a contact head, and the contact head can abut against the to-be-detected surface.

Description

Technical Field

[0001] This utility model relates to the field of oil pipe inspection technology, and in particular to an inner wall arc surface inspection device for oil pipes. Background Technology

[0002] After oil is extracted, it must be transported to the appropriate processing departments for optimal utilization. Oil pipelines are essential equipment for transporting oil. To ensure that the dimensions of the oil pipeline meet the design drawings, parameters such as the length of the inner wall, outer diameter, wall thickness, and geometric tolerances need to be measured multiple times to ensure they are within the allowable tolerance range. Due to the large volume of oil pipes, the current inspection method is laser fixed-point inspection, which has high efficiency in detecting both inner and outer diameters and can effectively detect the inner diameter and length of the oil pipe. Another method is pipe end inspection, which involves segmented inspection of local diameters. For example, Chinese patent CN208296803U discloses a pipe end diameter inspection device, which includes a base with a mold lifting column at the top, and a lifting screw on the mold lifting column whose upper end is connected to the top of the mold lifting column through an adjusting nut. The mold drive mechanism at the lower part of the lifting screw includes a drive housing, and the drive end of the active roller shaft inside the drive housing is connected to the output end of the drive motor. A driven roller is located above the active roller. Between the active roller and the driven roller, a mold guide tube is arranged horizontally and runs through the entire drive housing. A diameter mold is located at the front end of the mold guide tube. The aforementioned patent can detect the inner diameter of the end of a tubular body, but it cannot detect other parameters. The detection parameters are limited. Furthermore, for tubes with irregular inner wall structures, such as those with curved, stepped, or grooved surfaces, the aforementioned patent cannot perform continuous detection. It requires disassembly and repositioning, which not only increases labor costs but also affects the control of product quality.

[0003] Therefore, it is necessary for those skilled in the art to provide an inner wall arc surface inspection device for oil pipes that can inspect oil pipes with different diameters and perform inspections on at least two or more parameters to ensure the continuity and accuracy of the inspection. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting the inner wall arc surface of oil pipes, so as to solve the technical problem in the prior art that it is impossible to continuously detect oil pipes with different inner wall diameters or arc surfaces.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: an inner wall arc surface detection device for oil pipes, including a base and a lever detection head rotatably mounted on the base. One end of the lever detection head is connected to a distance sensor, and the other end of the lever detection head abuts against the surface to be detected. A first protrusion is provided on the top surface of the base, and a second protrusion is provided on the top surface of the first protrusion. The distance sensor is mounted on the top surface of the base, and the lever detection head is mounted on the second protrusion. The lever detection head is L-shaped and rotatably mounted on the second protrusion. A horizontal abutment surface is provided on the bottom surface of the lever detection head facing the distance sensor, and the distance sensor abuts against the horizontal abutment surface. An inclined abutment surface is provided on the bottom surface of the lever detection head away from the horizontal abutment surface. A pneumatic telescopic rod is provided on one side of the base, and a telescopic head inside the pneumatic telescopic rod abuts against the inclined abutment surface. A contact head is detachably connected to the top surface of the lever detection head near the inclined abutment surface, and the contact head abuts against the surface to be detected.

[0006] Furthermore, the lever detection head is provided with a through hole, which is located between the second boss and the distance sensor. The through hole is opened towards the top surface of the first boss and penetrates the wall of the lever detection head.

[0007] Furthermore, a limiting bolt is fitted inside the through hole. The threaded part of the limiting bolt passes through the through hole and is threadedly fixed to the top surface of the first boss. The threaded head of the limiting bolt can abut against the surface of the lever detection head.

[0008] Furthermore, a spring is fitted on the limiting bolt, with one end of the spring abutting the top surface of the first boss and the other end of the spring abutting the bottom surface of the lever detection head.

[0009] Furthermore, the lowest part of the contact head is higher than the highest part of the limiting bolt, and the end of the contact head is an arc surface.

[0010] Furthermore, the pneumatic telescopic rod includes a sleeve and a telescopic head slidably disposed within the sleeve. A return spring is provided between the telescopic head and the sleeve. An air pipe is connected to the outside of the sleeve, through which compressed air is supplied to the sleeve.

[0011] Furthermore, the distance sensor is an ultrasonic distance sensor.

[0012] The beneficial effects of this invention are as follows: By continuously pushing one end of the lever detection head, the lever detection head can move along the outer contour of the surface to be detected. Data during the movement is collected using a distance sensor, enabling continuous detection of curved surfaces or surfaces with different inner diameters. By setting the lever detection head in an L-shape and placing the contact head at the highest point of the lever detection head, interference from other parts of the lever detection head during rotation is prevented. This is especially beneficial when detecting curved or stepped surfaces, as the independently protruding contact head effectively ensures the stability and continuity of the detection. Furthermore, this invention can also detect data such as diameter and cylindricity, and has advantages such as simple operation and wide applicability. Attached Figure Description

[0013] Figure 1 This is a perspective view of the inner wall arc surface detection device for oil pipes according to this utility model.

[0014] Figure 2 This is an exploded view of the inner wall arc surface detection device for oil pipes according to this utility model.

[0015] Figure 3 This is the front view of the inner wall arc surface detection device for oil pipes according to this utility model.

[0016] Figure 4 This is a front sectional view of the inner wall arc surface detection device for oil pipes according to this utility model.

[0017] The components in the attached diagram are labeled as follows: 10, base; 11, first boss; 12, second boss; 13, connecting block; 15, distance sensor; 16, pneumatic telescopic rod; 20, lever detection head; 21, horizontal contact surface; 22, inclined contact surface; 23, contact head; 24, through hole; 25, limit bolt; 26, spring. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] Please see Figure 1 , Figure 2 This utility model provides an inner wall arc surface detection device for oil pipes, including a base 10 and a lever detection head 20 rotatably mounted on the base 10. One end of the lever detection head 20 is connected to a distance sensor 15, and the other end of the lever detection head 20 abuts against the surface to be detected (not shown in the figure). In use, by horizontally moving the base 10, the lever detection head 20 is driven to move horizontally. The lever detection head 20 moves along the outer contour of the surface to be detected, and at the same time, the distance sensor 15 collects data during the movement, so as to realize continuous detection of the arc surface.

[0020] Further, please refer to Figure 3 , Figure 4 The base 10 has a first protrusion 11 on its top surface and a second protrusion 12 on its top surface. The distance sensor 15 is mounted on the top surface of the base 10 and the lever detection head 20 is mounted on the second protrusion 12.

[0021] In this embodiment, the lever detection head 20 is L-shaped and is rotatably mounted on the second boss 12 by means of a pin. A horizontal abutment surface 21 is provided on the bottom surface of the lever detection head 20 facing the distance sensor 15, and the distance sensor 15 abuts against the horizontal abutment surface 21.

[0022] The lever detection head 20 has a through hole 24 located between the second boss 12 and the distance sensor 15. The through hole 24 faces the top surface of the first boss 11 and penetrates the wall of the lever detection head 20. A limit bolt 25 is fitted inside the through hole 24. The threaded part of the limit bolt 25 penetrates the through hole 24 and is threadedly fixed to the top surface of the first boss 11. The threaded head of the limit bolt 25 can abut against the surface of the lever detection head 20.

[0023] A spring 26 is fitted onto the limiting bolt 25. One end of the spring 26 abuts against the top surface of the first protrusion 11, and the other end abuts against the bottom surface of the lever detection head 20. Under the action of the spring 26, the lever detection head 20 abuts against the threaded head of the limiting bolt 25. When the lever detection head 20 rotates, it rotates around the pin, disengaging from the limiting bolt 25 and compressing the spring 26. When the lever detection head 20 rotates in the opposite direction, it resets under the elastic action of the spring 26 and abuts against the threaded head of the limiting bolt 25, thereby ensuring the stability of the lever detection head 20 during rotation and achieving the limiting effect.

[0024] In use, the lever detection head 20 rotates on the second boss 12, the distance sensor 15 is compressed at the end and records the distance data, and the spring 26 is compressed and accumulates elastic potential energy. When the lever detection head 20 rotates in the opposite direction on the second boss 12, the spring 26 releases the elastic potential energy and pushes the lever detection head 20 to reset, and the distance sensor 15 follows and records the distance data synchronously.

[0025] Understandably, the distance sensor 15 is a common ultrasonic distance sensor on the market. The end of the distance sensor 15 that contacts the horizontal contact surface 21 is retractable to ensure stability during use.

[0026] In this embodiment, the bottom surface of the lever detection head 20 is provided with an inclined abutment surface 22 at one end away from the horizontal abutment surface 21, and a pneumatic telescopic rod 16 is provided on one side of the base 10, with the telescopic head inside the pneumatic telescopic rod 16 abutting the inclined abutment surface 22.

[0027] In use, the telescopic head of the pneumatic telescopic rod 16 pushes against the inclined contact surface 22, thereby causing the lever detection head 20 to rotate on the second boss 12. When the telescopic head of the pneumatic telescopic rod 16 retracts, the lever detection head 20 is reset by the push of the spring 26.

[0028] Understandably, the pneumatic telescopic rod 16 includes a sleeve and a telescopic head slidably disposed within the sleeve. A return spring is provided between the telescopic head and the sleeve. An air pipe is connected to the outside of the sleeve, and compressed air is supplied to the sleeve through the air pipe to push the telescopic head to move. When the compressed air decreases, the telescopic head returns to its original position under the action of the spring, thus completing the pushing action.

[0029] This invention continuously supplies compressed air into the pneumatic telescopic rod 16, causing the telescopic head inside the rod 16 to continuously abut against the inclined contact surface 22. This allows the lever detection head 20 to continuously abut against the surface to be tested. When a stepped or grooved surface forms on the surface to be tested, the lever detection head 20 will become stuck in the stepped or grooved surface when the base 10 is moved horizontally. At this point, simply stop supplying compressed air into the pneumatic telescopic rod 16, and the telescopic head of the rod 16 will retract. The lever detection head 20 will reset under the push of the spring 26, thus disengaging from the stepped or grooved surface on the surface to be tested. The base 10 continues to move horizontally, while compressed air is supplied into the pneumatic telescopic rod 16 again. The lever detection head 20 will then re-adhere tightly to the surface to be tested under the abutment of the rod 16, thereby achieving continuous testing and ensuring the continuity and accuracy of the testing.

[0030] In this embodiment, a contact head 23 is detachably connected to the top surface of the lever detection head 20 near the inclined contact surface 22. The contact head 23 can abut against the surface to be detected. By setting a replaceable contact head 23, the stability and accuracy of the detection can be ensured.

[0031] The lowest part of the contact head 23 is higher than the highest part of the limiting bolt 25 to prevent interference. This invention, by setting the lever detection head 20 in an L-shape and placing the contact head 23 at the highest part of the lever detection head 20, prevents interference from other parts of the lever detection head 20 during rotation. Especially when detecting boss surfaces, the independently protruding contact head 23 can extend into the surface to be detected, effectively ensuring the stability and continuity of the detection. Simultaneously, the end of the contact head 23 is arc-shaped to prevent jamming. When the contact head 23 gets stuck on a groove surface or step surface, simply repositioning the lever detection head 20 allows the arc-shaped contact head 23 to disengage more quickly, thereby improving detection efficiency.

[0032] In this embodiment, the base 10 is also provided with a connecting block 13, which is used to be installed on the output shaft of the motor (not shown in the figure) to drive the base 10 to rotate coaxially and realize the measurement of data such as diameter and roundness.

[0033] The specific operation of this utility model is as follows: air is continuously supplied to the pneumatic telescopic rod 16, the telescopic head of the pneumatic telescopic rod 16 extends and pushes against the inclined contact surface 22 of the lever detection head 20, the contact head 23 of the lever detection head 20 abuts against the surface to be tested, the base 10 is moved horizontally, and the lever detection head 20 moves along the outer contour of the surface to be tested. At the same time, the distance sensor 15 collects data during the movement, realizing continuous detection of the arc surface. When the telescopic head of the pneumatic telescopic rod 16 retracts, the lever detection head 20 is reset under the push of the spring 26, completing the arc surface detection.

[0034] This invention continuously pushes one end of the lever detection head 20, allowing it to move along the outer contour of the surface to be detected. Data collected during this movement is gathered by the distance sensor 15, enabling continuous detection of curved or stepped surfaces. By arranging the lever detection head 20 in an L-shape and positioning the contact head 23 at its highest point, this invention prevents interference from other parts of the lever detection head 20 during rotation. This is particularly effective when detecting curved or stepped surfaces, as the independently protruding contact head 23 ensures stable and continuous detection. Furthermore, this invention can also detect data such as diameter and cylindricity, offering advantages such as simple operation and wide applicability.

[0035] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A device for detecting the inner wall arc surface of an oil pipe, comprising a base (10) and a lever detection head (20) rotatably mounted on the base (10), wherein one end of the lever detection head (20) is connected to a distance sensor (15), and the other end of the lever detection head (20) abuts against the detection surface, characterized in that, The base (10) has a first protrusion (11) on its top surface and a second protrusion (12) on its top surface. The distance sensor (15) is mounted on the top surface of the base (10), and the lever detection head (20) is mounted on the second protrusion (12). The lever detection head (20) is L-shaped and is rotatably mounted on the second protrusion (12). The bottom surface of the lever detection head (20) has a horizontal abutment surface (21) at one end facing the distance sensor (15). The distance sensor (15) abuts against the horizontal contact surface (21); the bottom surface of the lever detection head (20) is provided with an inclined contact surface (22) at one end away from the horizontal contact surface (21), and a pneumatic telescopic rod (16) is provided on one side of the base (10), with the telescopic head inside the pneumatic telescopic rod (16) abutting against the inclined contact surface (22); a contact head (23) is detachably connected to the top surface of the lever detection head (20) near the inclined contact surface (22), and the contact head (23) abuts against the surface to be detected.

2. The tubing inner wall arc surface detection device according to claim 1, characterized in that, The lever detection head (20) has a through hole (24) located between the second boss (12) and the distance sensor (15). The through hole (24) is opened towards the top surface of the first boss (11) and penetrates the wall of the lever detection head (20).

3. The tubing inner wall arc surface detection device according to claim 2, characterized in that, A limiting bolt (25) is connected in the through hole (24). The screw part of the limiting bolt (25) passes through the through hole (24) and is threadedly fixed to the top surface of the first boss (11). The screw head of the limiting bolt (25) can abut against the surface of the lever detection head (20).

4. The tubing inner wall arc surface detection device according to claim 3, characterized in that, A spring (26) is fitted on the limiting bolt (25). One end of the spring (26) abuts against the top surface of the first boss (11), and the other end of the spring (26) abuts against the bottom surface of the lever detection head (20).

5. The tubing inner wall arc surface detection device according to claim 4, characterized in that, The lowest part of the contact head (23) is higher than the highest part of the limiting bolt (25), and the end of the contact head (23) is an arc surface.

6. The tubing inner wall arc surface detection device according to claim 1, characterized in that, The pneumatic telescopic rod (16) includes a sleeve and a telescopic head that is slidably disposed in the sleeve. A return spring is provided between the telescopic head and the sleeve. An air pipe is connected to the outside of the sleeve, and compressed air is supplied to the sleeve through the air pipe.

7. The tubing inner wall arc surface detection device according to claim 1, characterized in that, The distance sensor (15) is an ultrasonic distance sensor.

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