Oil gas long-distance pipeline surface crack detection device

Abstract

The utility model discloses an oil gas long-distance pipeline surface crack detection device which comprises a shell, a connecting plate is fixedly connected to the rear wall of the shell, a buffer mechanism is arranged in the connecting plate, and an electric roller is arranged in the buffer mechanism. Through the buffer mechanism, the electric rollers, the buffer device, the support and the auxiliary wheels, the device can cross obstacles when walking on a pipeline for detection, the walking smoothness of the device is improved, and the detection efficiency is improved; and through the arrangement of the mounting groove block, the first screw hole, the mounting plate, the second screw hole and the bolt, the half gear ring can be independently disassembled and assembled, and maintenance and replacement of the half gear ring are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas pipeline crack detection, in particular to a surface crack detection device for a long-distance oil and gas pipeline. Background Art

[0002] Long-distance pipelines refer to pipelines used to transport commodity media between production sites, storage depots, and user units. Long-distance oil and gas pipeline systems, that is, pipeline systems used to transport oil, gas, and oil and gas products, are mainly composed of oil pipelines, oil stations, and other auxiliary related equipment. They are one of the main equipment in the oil and gas storage and transportation industry, and are also the most important transportation equipment for crude oil and oil and gas products. During the long-term use of long-distance oil and gas pipelines, the pressure inside the oil pipelines will cause cracks on the surface of the oil pipelines. It is necessary to use ultrasonic detectors to detect cracks on the surface of long-distance oil and gas pipelines and perform maintenance work on these cracks.

[0003] The patent number 202321957756.6 disclosed a surface crack detection device for a long-distance oil and gas pipeline, including a main support, and a marking mechanism is arranged on the outside of the main support, and the marking mechanism includes two half-toothed rings of a movable plate. The utility model can detect the outer surface of the pipeline through the setting of the marking mechanism and two infrared detection cameras. When cracks are found on the surface of the pipeline, the central controller will control the servo motor to start, and the servo motor starts the rotating gear to move the movable plate around the pipeline. When the movable plate moves to the crack position, the servo motor stops working, and the central controller controls the extension of the electric telescopic rod. The extension of the electric telescopic rod drives the seal to move through the connecting rod. The seal moves to contact the pipeline and mark it. The mark is the crack position detected by the infrared detection camera. The device can be marked multiple times without being disassembled from the pipeline, saving time and effort, making the detection work more convenient and quick.

[0004] Although the above patent can detect and mark the pipeline, impurities will adhere to the outer wall of the pipeline during long-term use, causing its walking mechanism to be blocked when walking on the pipe wall. The impurities need to be cleaned manually, affecting the inspection efficiency. In addition, since the half-toothed ring is integrated with the device, it is not easy to be damaged and repaired or replaced. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide a surface crack detection device for a long-distance oil and gas pipeline. By means of a buffer mechanism, an electric roller, a buffer device, a bracket, and an auxiliary wheel, the device can overcome obstacles when walking on the pipeline for detection, thereby improving the smoothness of the device's movement and improving the detection efficiency; by means of the installation slot block, screw hole one, installation plate, screw hole two, and bolts, the half-toothed ring can be disassembled and assembled separately, thereby facilitating the maintenance and replacement of the half-toothed ring.

[0006] One of the purposes of the utility model is achieved by adopting the following technical scheme: a surface crack detection device for a long-distance oil and gas pipeline, comprising: a shell, a connecting plate is fixedly connected to the rear wall of the shell, a buffer mechanism is arranged inside the connecting plate, an electric roller is arranged inside the buffer mechanism, a slide groove is opened at the bottom end of the shell, a positive and negative threaded rod is rotatably connected between the left and right inner walls of the slide groove, a crank is fixedly connected to the side wall of the extended end of the positive and negative threaded rod, two displacement plates are threadedly connected to the outer wall of the positive and negative threaded rod, buffer devices are arranged on the opposite surfaces of the two displacement plates, brackets are installed on the opposite surfaces of the two buffer devices, auxiliary wheels are rotatably connected to the inner walls of the brackets, and detachable half-toothed rings are installed on the front sides of the buffer devices, and a plurality of infrared detection cameras are evenly installed on the inner wall of the inner ring of the half-toothed ring. By means of the buffer mechanism, electric roller, buffer device, bracket and auxiliary wheel, the device can overcome obstacles when performing walking inspection on the pipeline, thereby improving the smoothness of the device's movement and improving the inspection efficiency; by means of the installation slot block, screw hole one, installation plate, screw hole two and bolts, the half-toothed ring can be disassembled and assembled separately, thereby facilitating the maintenance and replacement of the half-toothed ring.

[0007] According to the device for detecting surface cracks in a long-distance oil and gas pipeline, the buffer mechanism includes a buffer groove 1, the inner wall of the buffer groove 1 is slidably connected with a buffer plate, the upper surface of the buffer plate is provided with four springs 1, and the inner wall of the buffer plate is fixedly connected to the outer wall of the electric roller.

[0008] According to the device for detecting surface cracks in a long-distance oil and gas pipeline, the buffer device includes a buffer shell, a side wall of the buffer shell is provided with a second buffer groove, an inner wall of the second buffer groove is slidably connected with a buffer block, a second spring is provided between the buffer block and the opposite surface of the second buffer groove, and the outer wall of the buffer block is fixedly connected to the side wall of the bracket.

[0009] A surface crack detection device for a long-distance oil and gas pipeline is provided, wherein the front wall of the buffer shell is fixedly connected with a mounting groove block, the rear wall of the semi-toothed ring is fixedly connected with a mounting plate, and the shape of the mounting plate is adapted to the shape of the groove of the mounting groove block.

[0010] According to the surface crack detection device for a long-distance oil and gas pipeline, a screw hole 1 is provided on the side wall of the mounting slot block, a screw hole 2 corresponding to the position of the screw hole 1 is provided on the side wall of the mounting plate, and the inner walls of the screw hole 1 and the screw hole 2 are threadedly connected by bolts passing through them.

[0011] According to the device for detecting surface cracks in a long-distance oil and gas pipeline, the front walls of the semi-toothed rings are provided with slide rails, the inner walls of the slide rails are slidably connected with marking equipment, and the marking equipment is meshingly connected with the outer walls of the semi-toothed rings.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a three-dimensional diagram of a surface crack detection device for a long-distance oil and gas pipeline according to the utility model;

[0015] Figure 2 This is a structural diagram of a buffer device for a surface crack detection device for a long-distance oil and gas pipeline according to the utility model;

[0016] Figure 3 This is a structural diagram of a buffer mechanism of a surface crack detection device for a long-distance oil and gas pipeline according to the utility model;

[0017] Figure 4 The utility model is a three-dimensional diagram of a half-tooth ring of a surface crack detection device for a long-distance oil and gas pipeline.

[0018] Legend:

[0019] 1. Shell; 2. Connecting plate; 3. Buffer mechanism; 4. Electric roller; 5. Positive and negative threaded rod; 6. Crank; 7. Displacement plate; 8. Buffer device; 9. Bracket; 10. Auxiliary wheel; 11. Half-tooth ring; 12. Infrared detection camera; 13. Bolt; 14. Mounting slot block; 15. Screw hole 1; 101. Slide slot; 301. Buffer slot 1; 302. Spring 1; 401. Buffer plate; 801. Buffer shell; 802. Buffer slot 2; 803. Spring 2; 804. Buffer block; 1101. Slide rail; 1102. Mounting plate; 1103. Screw hole 2. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-4, the utility model embodiment of a long-distance oil and gas pipeline surface crack detection device, which comprises: a shell 1, a connecting plate 2 is fixedly connected to the rear wall of the shell 1, a buffer mechanism 3 is arranged inside the connecting plate 2, an electric roller 4 is arranged inside the buffer mechanism 3, a slide groove 101 is provided at the bottom end of the shell 1, a positive and negative threaded rod 5 is rotatably connected between the left and right inner walls of the slide groove 101, a crank 6 is fixedly connected to the side wall of the extended end of the positive and negative threaded rod 5, and two displacement plates 7 are threadedly connected to the outer wall of the positive and negative threaded rod 5, and buffer devices 8 are arranged on the opposite surfaces of the two displacement plates 7, brackets 9 are installed on the opposite surfaces of the two buffer devices 8, and auxiliary wheels 10 are rotatably connected to the inner walls of the brackets 9, and detachable semi-toothed rings 11 are installed on the front sides of the buffer devices 8, and slide rails 1101 are provided on the front walls of the semi-toothed rings 11, and a marking device is slidably connected to the inner wall of the slide rail 1101, and the marking device is meshedly connected to the outer wall of the semi-toothed ring 11, and a plurality of infrared detection cameras 12 are evenly installed on the inner wall of the inner ring of the semi-toothed ring 11;

[0022] The buffer mechanism 3 includes a buffer groove 301, the inner wall of the buffer groove 301 is slidably connected with a buffer plate 401, the upper surface of the buffer plate 401 is provided with four springs 302, and the inner wall of the buffer plate 401 is fixedly connected to the outer wall of the electric roller 4;

[0023] The buffer device 8 includes a buffer shell 801, and the side wall of the buffer shell 801 is provided with a buffer groove 802. The inner wall of the buffer groove 802 is slidably connected with a buffer block 804. A spring 803 is provided between the opposite surfaces of the buffer block 804 and the buffer groove 802. The outer wall of the buffer block 804 is fixedly connected to the side wall of the bracket 9. The front wall of the buffer shell 801 is fixedly connected with a mounting groove block 14, and the rear wall of the semi-toothed ring 11 is fixedly connected with a mounting plate 1102. The shape of the mounting plate 1102 is adapted to the shape of the groove of the mounting groove block 14. The side wall of the mounting groove block 14 is provided with a screw hole 15. The side wall of the mounting plate 1102 is provided with a screw hole 1103 corresponding to the position of the screw hole 15. The screw hole 15 and the inner wall of the screw hole 1103 are threadedly connected by a bolt 13. By means of the buffer mechanism 3, electric roller 4, buffer device 8, bracket 9 and auxiliary wheel 10, the device is installed on the pipeline for walking detection. When the electric roller 4 touches the raised obstacle, the buffer plate 401 slides in the buffer groove 301, and the spring 302 drives the buffer plate 401 to perform elastic reset, so that the electric roller 4 passes over the obstacle. When the auxiliary wheel 10 encounters an obstacle, the buffer block 804 slides in the buffer groove 802, and the spring 803 drives the buffer block 804 to perform elastic reset, so that the auxiliary wheel 10 passes over the obstacle, thereby improving the smoothness of the device's walking and improving the detection efficiency. By means of the installation slot block 14, screw hole 15, installation plate 1102, screw hole 2 1103 and bolt 13, when the semi-toothed ring 11 needs to be repaired, the connection lock between the device and the semi-toothed ring 11 can be released by rotating and removing the bolt 13, and the installation plate 1102 of the semi-toothed ring 11 can be removed from the slot of the installation slot block 14 to complete the disassembly, which is convenient for the repair and replacement of the semi-toothed ring 11.

[0024] Working principle: When the device is installed on the pipe, the roller of the electric roller 4 is against the top of the pipe, and the crank 6 is turned to drive the positive and negative threaded rods 5 to rotate, driving the two displacement plates 7 and the half-toothed rings 11 to move toward each other until the two half-toothed rings 11 merge. At this time, the auxiliary wheels 10 on both sides complete the clamping of the outer wall of the pipe, and the installation is completed. During walking detection, the electric roller 4 is started. When it touches the raised obstacle, the buffer plate 401 slides in the buffer groove 301, and the spring 302 drives the buffer plate 401 to reset, so that the electric roller 4 passes the obstacle. When the auxiliary wheel 10 encounters the obstacle, the electric roller 4 moves back to the original position. When there is an obstacle, the buffer block 804 slides in the buffer groove 802, and the spring 803 drives the buffer block 804 to reset, so that the auxiliary wheel 10 can go over the obstacle, thereby improving the smoothness of the device's movement. While walking, the infrared detection camera 12 detects the outer wall of the pipeline and transmits the data of the crack position to the central controller; when the half-toothed ring 11 needs to be repaired, the connection lock between the device and the half-toothed ring 11 can be released by rotating and removing the bolt 13, and the mounting plate 1102 of the half-toothed ring 11 can be taken out of the mounting groove block 14 to complete the disassembly, which is convenient for the repair and replacement of the half-toothed ring 11.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A surface crack detection device for a long-distance oil and gas pipeline, comprising: The shell (1) is characterized in that a connecting plate (2) is fixedly connected to the rear wall of the shell (1), a buffer mechanism (3) is provided inside the connecting plate (2), an electric roller (4) is provided inside the buffer mechanism (3), a slide groove (101) is opened at the bottom end of the shell (1), a positive and negative threaded rod (5) is rotatably connected between the left and right inner walls of the slide groove (101), a crank (6) is fixedly connected to the side wall of the extended end of the positive and negative threaded rod (5), two displacement plates (7) are threadedly connected to the outer wall of the positive and negative threaded rod (5), a buffer device (8) is provided on the opposite surfaces of the two displacement plates (7), a bracket (9) is installed on the opposite surfaces of the two buffer devices (8), an auxiliary wheel (10) is rotatably connected to the inner wall of the bracket (9), a detachable half-toothed ring (11) is installed on the front side of the buffer device (8), and a plurality of infrared detection cameras (12) are evenly installed on the inner wall of the inner ring of the half-toothed ring (11).

2. The surface crack detection device for long-distance oil and gas pipelines according to claim 1 is characterized in that: The buffer mechanism (3) comprises a buffer groove (301), the inner wall of the buffer groove (301) being slidably connected to a buffer plate (401), the upper surface of the buffer plate (401) being provided with four springs (302), and the inner wall of the buffer plate (401) being fixedly connected to the outer wall of the electric roller (4).

3. The surface crack detection device for long-distance oil and gas pipelines according to claim 1 is characterized in that: The buffer device (8) comprises a buffer shell (801), the side wall of the buffer shell (801) is provided with a second buffer groove (802), the inner wall of the second buffer groove (802) is slidably connected with a buffer block (804), a second spring (803) is provided between the opposing surfaces of the buffer block (804) and the second buffer groove (802), and the outer wall of the buffer block (804) is fixedly connected to the side wall of the bracket (9).

4. The surface crack detection device for long-distance oil and gas pipelines according to claim 3 is characterized in that: The front wall of the buffer shell (801) is fixedly connected to a mounting groove block (14), and the rear wall of the half gear ring (11) is fixedly connected to a mounting plate (1102), and the shape of the mounting plate (1102) is adapted to the shape of the groove of the mounting groove block (14).

5. The surface crack detection device for long-distance oil and gas pipelines according to claim 4 is characterized in that: The side wall of the installation slot block (14) is provided with a screw hole 1 (15), and the side wall of the installation plate (1102) is provided with a screw hole 2 (1103) corresponding to the position of the screw hole 1 (15). The screw hole 1 (15) and the inner wall of the screw hole 2 (1103) are threadedly connected by a bolt (13) passing through them.

6. The surface crack detection device for long-distance oil and gas pipelines according to claim 1 is characterized in that: The front wall of the semi-toothed ring (11) is provided with a slide rail (1101), the inner wall of the slide rail (1101) is slidably connected with a marking device, and the marking device is meshingly connected with the outer wall of the semi-toothed ring (11).

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