Steel petroleum pipeline crack detection device and use method thereof

Abstract

The invention discloses a steel petroleum pipeline crack detection device and a use method thereof.The steel petroleum pipeline crack detection device comprises a lantern ring, an oil pipe crack detection device is arranged in the lantern ring, and the lantern ring is divided into an upper lantern ring body and a lower lantern ring body; a first moving wheel set is connected to the lower lantern ring, and two second moving wheel sets are symmetrically arranged on the upper lantern ring. The first moving wheel set and the second moving wheel set are each provided with a connecting block, a telescopic assembly and a moving wheel. One end of the telescopic assembly is connected with the connecting block, and the other end is connected with the moving wheel. The pipeline crack detection device can continuously detect the pipeline, in the detection process, when encountering a pipeline elbow, the crack detection device does not need to be dismantled and installed again, operation is easy, and detection is more thorough and stable.

Description

Technical Field

[0001] The invention relates to the technical field of crack detection, in particular to a steel petroleum pipeline crack detection device and a use method thereof. Background Art

[0002] Oil is a non-renewable energy source. The continuous advancement of science and technology is inseparable from the boost of oil resources. Only with oil can engines be driven, and only with oil can the sea, land and air be able to travel freely. From spacecraft soaring in space to submarines diving deep into the sea, they all rely on important oil resources. In the process of oil extraction, oil often needs to be transported to a designated location. Since oil is in liquid form, it has extremely high requirements on the sealing of the transportation pipeline. As time goes by, the pipeline will inevitably be damaged due to long-term exposure to the outside, and crack detection of the oil pipeline is required.

[0003] Publication number: CN110514356A, discloses an oil pipeline crack detection device, including a fuselage, a sliding cavity is arranged in the fuselage, a left arc hole and a right arc hole connected to the sliding cavity are arranged on the left and right sides of the fuselage, an upper hole is arranged above the sliding cavity, a sliding body is slidably connected in the sliding cavity, an upper sliding rod slidably connected to the upper hole is fixedly connected to the upper end of the sliding body, an output cavity is arranged in the sliding body, the prior art can be automatically fixedly connected to the pipeline and can move freely, during the movement, the pipeline is detected by a probe that can move circumferentially around the pipeline, through the all-round probe detection, the damaged part can be well found, so as to repair these cracks, thereby preventing the loss caused by oil leakage, the present invention is also provided with different pipe diameters that can be freely changed, and pipelines with different pipe diameters can be detected.

[0004] This prior art can detect oil pipelines of different diameters, but cannot go over the elbow joints of the oil pipelines. When the oil pipelines are pre-buried, there will be changes in direction and elbows will be set.

[0005] Publication number: CN217519683U, discloses a rapid detection device for oil and gas leakage points, which relates to the field of oil and gas detection, including a connection unit located on the outside of the oil and gas pipeline and a gas-liquid detection device movably installed on the surface of the connection unit, the left and right ends of the connection unit are connected to a limit unit for fixing the oil and gas pipeline, the limit unit includes an oblique extension piece abutting against the outer wall of the oil pipeline, the end of the oblique extension piece is fixedly connected to a rubber cushion layer, and the end of the oblique extension piece is fixedly connected to a clamping arm. This prior art has a tight installation function and improves the anti-slip performance by providing a controllable limit unit, which can reduce the time for the installation, use and disassembly of the oil and gas leakage point rapid detection device and the pipeline, improves the portability during the installation and disassembly process, and is easy to replace and use. At the same time, the length of the oil and gas leakage point rapid detection device can be adjusted to be suitable for pipeline interfaces of different lengths.

[0006] This prior art can detect oil pipelines of different diameters, but cannot go over the elbow joints of the oil pipelines. When the oil pipelines are pre-buried, there will be changes in direction and elbows will be set.

[0007] Publication number: CN114228853A, discloses a crawler for oil pipeline inspection, including a frame, a front crawling foot movably connected to one side of the frame, a rear crawling foot movably connected to the other side, a clamping and telescopic device fixedly arranged in the middle of the frame, and a detection device fixedly arranged on the clamping and telescopic device, the frame can be driven to telescopically move on the oil pipeline through the clamping and telescopic device, and the crawling action on the oil pipeline is realized in cooperation with the front and rear crawling feet, and the oil pipeline is inspected through the detection device. This prior art adopts a mechanical arm crawling and a wheeled mechanism to fix it, and the driving cylinder is used to drive the walking. The detection device is placed on the frame, and the movement process is completed by the mechanical arm and the driving cylinder. It can actively overcome obstacles during the crawling process, and has high reliability.

[0008] This prior art can detect oil pipelines of different diameters and can also climb over the elbow joints of oil pipelines, but the forward efficiency of using the crawling arm is too low and the practical application value is low.

[0009] In summary, the technical solutions of the above-disclosed technologies, the technical problems to be solved, and the beneficial effects produced are all different from the present invention. Regarding more technical features, technical problems to be solved, and beneficial effects of the present invention, the above-disclosed technical documents do not provide any technical inspiration. Summary of the invention

[0010] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to solve the problem that the detection device cannot cross the elbow connection of the oil pipeline and the problem of slow forward speed, and also to improve the accuracy of detection.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] A steel oil pipeline crack detection device comprises a collar, wherein the oil pipe crack detection device is arranged inside the collar, and the collar is divided into an upper collar and a lower collar, wherein the lower collar is connected with a first moving wheel set, and the upper collar is symmetrically provided with two second moving wheel sets;

[0013] The first moving wheel group and the second moving wheel group are both provided with a connecting block, a telescopic component and a moving wheel; one end of the telescopic component is connected to the connecting block, and the other end is connected to the moving wheel.

[0014] The telescopic assembly includes a second connecting rod connected to the connecting block and a first connecting rod connected to the second connecting rod;

[0015] The second connecting rod is a hollow rod, and the other end of the first connecting rod is connected to the moving wheel;

[0016] The first connecting rod can move forward and backward in the second connecting rod, and the distance between the first connecting rod and the second connecting rod is adjusted by a locking member arranged on the second connecting rod.

[0017] The first moving wheel set further comprises a round rod, and the round rod is provided with a first connecting block;

[0018] The second moving wheel set further includes a rotating rod, and a second connecting block is arranged on the rotating rod.

[0019] The second connecting block in the second moving wheel set is connected to a plurality of, at least two, moving wheels via a telescopic assembly.

[0020] The upper end of the second movable wheel group is provided with a swing device, and the lower end is provided with a follow-up swing mechanism, and the plane where the end surface of the ring is located is the first plane.

[0021] The swing device comprises an arc-shaped rack fixedly connected to the collar, and a first gear is meshed on the arc-shaped rack;

[0022] The first gear is connected to the rotating rod, a circular groove is provided on one side of the first gear of the rotating rod, and a second protrusion is provided in the circular groove;

[0023] A rotating shaft is arranged on the second protrusion, the axis of the transmission shaft is perpendicular to the first plane, the rotating shaft is connected to the transverse plate, and the transverse plate is fixedly connected to the collar.

[0024] The following swing mechanism comprises a third connecting rod movably connected to the rotating rod, the third connecting rod is movably connected to the sixth connecting rod, and the other end of the sixth connecting rod is movably connected to the seventh connecting rod;

[0025] The axis of the seventh connecting rod is perpendicular to the first plane, and the seventh connecting rod is movably connected to the vertical plate arranged on the collar through a limiting rod;

[0026] A sliding groove is provided in the vertical plate for the limiting rod to slide.

[0027] The horizontal plate is provided with a double-output-shaft linear motor, and the output shaft of the double-output-shaft linear motor is connected to the fifth connecting rod;

[0028] The fifth connecting rod can move forward and backward on the output shaft of the double-output-shaft linear motor, and the other end of the fifth connecting rod is movably connected to the fourth connecting rod;

[0029] The fourth connecting rod is movably connected with a first protrusion, and the first protrusion is arranged on the rotating rod.

[0030] The first connecting block in the first moving wheel set is connected to a plurality of, at least two, moving wheels via a telescopic assembly.

[0031] A transmission rack extending up and down is arranged between the seventh connecting rod and the limiting rod, and the transmission rack is movably connected to the vertical plate arranged on the sleeve ring through the limiting rod;

[0032] The two ends of the round rod are provided with second gears meshing with the transmission rack, and the second gear further restricts the transmission rack on the vertical plate.

[0033] The oil pipe crack detection device comprises a plurality of ultrasonic detection devices, which are evenly and staggeredly arranged on an annular plate, the annular plate is arranged in a slide groove of a sleeve ring, and the annular plate is arranged in two parts, an upper part and an lower part.

[0034] A gear ring is arranged on the outer end of the annular plate, a motor frame is arranged on one side of the gear ring of the sleeve ring, a motor is installed in the motor frame, and a third gear meshing with the gear ring is installed on the motor output shaft.

[0035] The moving wheel is a ball wheel; the diameter of the circle formed by the oil pipe crack detection device is larger than the diameter of the oil pipe elbow; the upper sleeve ring and the lower sleeve ring are connected by bolts.

[0036] In order to achieve the above object, the present invention adopts the following technical solutions:

[0037] A method for using a steel petroleum pipeline crack detection device, comprising:

[0038] S1: Installation and commissioning: First, disassemble the collar and the annular plate into upper and lower collars and upper and lower annular plates, install the collar and the annular plate together on the oil pipeline, and then install the moving wheel set. After installation, adjust the distance between the first connecting rod and the second connecting rod so that the three moving wheels surrounding the outer side of the oil pipe are in close contact with the surface of the oil pipe;

[0039] S2: Detect cracks: Start the motor to drive the third gear to rotate, so that the ultrasonic detection device on the annular plate rotates to detect cracks on the outside of the oil pipeline, and push the device until it hits the elbow of the oil pipeline;

[0040] S3: Going over the elbow connection: By starting the dual-axis linear motor, the circle formed by the three moving wheels becomes larger, and the moving wheel group is flipped so that some of the moving wheels go over the elbow connection. If it is impossible to go over, the diameter of the circle formed by the three moving wheels can be further enlarged by adjusting the distance between the first connecting rod and the second connecting rod. After going over, the dual-axis linear motor is started in the reverse direction to reset;

[0041] S4: Recovery and preservation steps: After the detection is completed, release the connection between the third connecting rod and the rotating rod, remove the bolts, separate the collar and the annular plate from top to bottom, and remove them from the oil pipeline. After removal, in order to avoid damage to the ultrasonic detection device, the collar and the annular plate must be fixed together and placed.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1) It can solve the technical problem of crossing the elbow of the oil pipeline;

[0044] 2) The detection device has been optimized to make the detection more reliable and accurate;

[0045] 3) The device moves fast and has high efficiency;

[0046] 4) The pipeline can be tested continuously. During the testing process, there is no need to remove and reinstall the crack detection device. The operation is simple and the detection is more thorough and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of the overall structure of a steel petroleum pipeline crack detection device of the present invention;

[0048] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0049] Figure 3 This is a schematic diagram of the structure of the present invention without the ring;

[0050] Figure 4 It is a schematic diagram of the structure of three moving wheel groups of the present invention;

[0051] Figure 5 For the present invention Figure 4 A magnified view of the structure of part A;

[0052] Figure 6 It is a schematic structural diagram of two second movable wheel groups of the present invention;

[0053] Figure 7 It is a schematic diagram of the structure of the swing device of the present invention;

[0054] Figure 8 It is a schematic diagram of the partial structure of the swing device of the present invention;

[0055] Fig. 9 This is a schematic diagram of the structure of the following swing mechanism of the present invention;

[0056] In the figure: 1. collar; 2. rotating rod; 201. first connecting rod; 202. second connecting rod; 203. second connecting block; 2031. first connecting block; 204. locking member; 205. moving wheel; 206. round rod; 3. arc rack; 301. first gear; 302. first protrusion; 303. second protrusion; 304. rotating shaft; 305. circular groove; 306. third connecting rod; 4. circular ring; 401. fourth connecting rod; 402. fifth connecting rod; 5. sixth connecting rod; 501. seventh connecting rod; 502. transmission rack; 503. second gear; 6. cross bar; 601. third gear; 602. gear ring; 603. annular plate; 604. ultrasonic detection device; 7. vertical plate; 8. bolt; 9. motor; 10. cross plate; 11. limit rod; 12. dual-axis linear motor. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] Embodiment 1:

[0059] See also Figure 1 , Figure 7 and Fig. 9 A steel oil pipeline crack detection device and a method of using the same, comprising a collar 1, wherein the collar 1 is provided with an oil pipe crack detection device, wherein one end of the collar 1 is provided with three moving wheel groups, wherein the three moving wheel groups are respectively a first moving wheel group and two second moving wheel groups;

[0060] The diameter of the circle formed by the oil pipe crack detection device is larger than the diameter of the oil pipe elbow;

[0061] The collar 1 is divided into two parts, and the upper and lower collars are connected by bolts 8; the first moving wheel set is connected to the lower collar, and the two second wheel sets are symmetrically arranged on the upper collar;

[0062] The three moving wheel groups each include a connecting block, and the connecting blocks in the three moving wheel groups are each connected to a moving wheel 205 through a telescopic assembly, and the moving wheel 205 is a ball wheel;

[0063] The telescopic assembly includes a second connecting rod 202 connected to the connecting block and a first connecting rod 201 connected to the second connecting rod 202, the second connecting rod 202 is a hollow rod, the other end of the first connecting rod 201 is connected to the moving wheel 205, the first connecting rod 201 can move forward and backward in the second connecting rod 202, and the distance between the first connecting rod 201 and the second connecting rod 202 is adjusted by a locking member 204 arranged on the second connecting rod 202, the first connecting block 2031 of the first moving wheel group is connected to the round rod 206, and the second connecting block 203 of the second moving wheel group is connected to the rotating rod 2;

[0064] Directions:

[0065] First, turn the bolt 8 to split the collar 1 into two parts, then put the two collars 1 on the outside of the oil pipeline for crack detection. After the two collars 1 are fixed, install the moving wheel group. After installation, adjust the distance between the first connecting rod 201 and the second connecting rod 202 to make the three moving wheels 205 surrounding the outside of the oil pipeline close to the surface of the oil pipeline. At this time, push the collar 1 along the outer wall of the oil pipeline to detect cracks in the pipeline. This structure is beneficial to adapt to oil pipelines of different diameters, so that the detection device can run stably on the outside of the oil pipeline.

[0066] When crossing over the elbow connection of the oil pipeline, the distance between the first connecting rod 201 and the second connecting rod 202 is adjusted to enlarge the circle formed by the three moving wheels 205 so that the device can pass through the elbow of the oil pipeline.

[0067] Embodiment 2:

[0068] See also Figures 1 to 9 , based on Example 1, the second connecting block 203 in the second moving wheel group is connected to a plurality of, at least two, moving wheels 205 through a telescopic assembly;

[0069] The second moving wheel group is provided with a swing device at the upper end and a follow-up swing mechanism at the lower end;

[0070] For the convenience of description, the plane where the end surface of the collar 1 is located is defined as the first plane;

[0071] Specific reference Figure 7The swing device includes an arc-shaped rack 3 fixedly connected to the collar 1, a first gear 301 is meshed on the arc-shaped rack 3, the first gear 301 is connected to the rotating rod 2, a circular groove 305 is provided on one side of the first gear 301 of the rotating rod 2, a second protrusion 303 is provided in the circular groove 305, a rotating shaft 304 is provided on the second protrusion 303, the axis of the transmission shaft 304 is perpendicular to the first plane, the rotating shaft 304 is connected to the transverse plate 10, and the transverse plate 10 is fixedly connected to the collar 1. When the first gear 301 rotates in the arc-shaped rack 3, it drives the rotating rod 2 to swing with the rotating shaft 304 as the center, so that the rotation axis of the second driving wheel group changes, and at the same time the rotating rod 2 rotates, and then the second connecting block 203 rotates;

[0072] Specific reference Figure 3 , Fig. 9 The following swing mechanism includes a third connecting rod 306 movably connected to the rotating rod 2, the third connecting rod 306 is movably connected to the sixth connecting rod 5, the other end of the sixth connecting rod 5 is movably connected to the seventh connecting rod 501, the axis of the seventh connecting rod 501 is perpendicular to the first plane, the seventh connecting rod 501 is movably connected to the vertical plate 7 arranged on the sleeve ring 1 through the limit rod 11, and a slide groove is provided in the vertical plate 7 for the limit rod 11 to slide; when the rotating rod 2 swings, the third connecting rod 306 drives the sixth connecting rod 5 at this end of the following swing mechanism, so that the seventh connecting rod 501 moves downward along the vertical plate 7 through the limit rod 11;

[0073] Specific reference Figure 4 , Figure 6 and Figure 7 , a double-output-axis linear motor 12 is arranged on the horizontal plate 10, the output shaft of the double-output-axis linear motor 12 is connected to the fifth connecting rod 502, the fifth connecting rod 502 can move forward and backward on the output shaft of the double-output-axis linear motor 12, the other end of the fifth connecting rod 502 is movably connected to the fourth connecting rod 401, the fourth connecting rod 401 is movably connected to the first protrusion 302, and the first protrusion 302 is arranged on the rotating rod 2;

[0074] Directions:

[0075] When encountering an elbow connection of an oil pipeline, the device is brought close to the elbow connection of the oil pipeline, and the dual-axis linear motor 12 is started to drive the fifth connecting rod 402 to perform linear motion. The fifth connecting rod 402 performs linear motion to drive the fourth connecting rod 401 to push the ring 4 to swing around the rotating shaft 304 as the axis. The swing of the ring 4 drives the swinging rod 4 to swing. The swinging of the rotating rod 4 causes the first gear 301 to rotate in the arc-shaped rack 3. The rotation of the first gear 301 causes the rotating rod 4 to rotate, and the rotating rod 4 drives the second moving wheel group to rotate.

[0076] On the one hand, the axes of the two second moving wheel groups are far away from the oil pipeline, but under the action of gravity, the reaction result is that the moving wheel 205 of the first moving wheel group is far away from the oil pipeline;

[0077] On the other hand, the two second moving wheel groups begin to flip, so that one moving wheel 205 in each of the two second moving wheel groups passes over the elbow connection of the oil pipeline;

[0078] Then the pushing device enables the first moving wheel group to also pass over the elbow connection of the oil pipeline;

[0079] Finally, the dual-axis linear motor 12 is started in reverse to restore the device.

[0080] Embodiment 3:

[0081] See also Fig. 9 , based on Example 2, the first connecting block 2031 in the first moving wheel group is connected to multiple, at least two moving wheels 205 through a telescopic component;

[0082] A transmission rack 502 running up and down is arranged between the seventh connecting rod 501 and the limiting rod 11, and the transmission rack 502 is movably connected with the vertical plate 7 arranged on the sleeve ring 1 through the limiting rod 11. Second gears 503 meshing with the transmission rack 502 are arranged at both ends of the round rod 206, and the second gear 503 further limits the transmission rack 502 on the vertical plate 7; when the rotating rod 2 swings, the third connecting rod 306 follows this end of the swing mechanism, and drives the sixth connecting rod 5, so that the seventh connecting rod 501 and the transmission rack 502 move downward through the limiting plate 11 along the vertical plate 7, driving the second gear 503 to rotate, so that the round rod 206 rotates;

[0083] Directions:

[0084] When encountering an elbow in the oil pipeline, the device is moved close to the elbow, and the dual-axis linear motor 12 is started. One of the two second moving wheel groups has a moving wheel 205 that crosses the elbow of the oil pipeline, and one of the moving wheels 205 in the first moving wheel group also crosses the elbow connection of the oil pipeline.

[0085] Then push the device so that it completely passes over the elbow connection of the oil pipeline;

[0086] Finally, the dual-axis linear motor 12 is started in reverse to restore the device.

[0087] Embodiment 4:

[0088] See also Figure 2The oil pipe crack detection device includes a plurality of ultrasonic detection devices 604, which are evenly staggered on the annular plate 603. The evenly staggered arrangement can increase the detection length, so that a section of pipe can be detected multiple times, and the detection accuracy is improved. The annular plate 603 is arranged in the slide groove of the ring 1, and a gear ring 602 is arranged on the outer end of the annular plate 603. The ring 1 is provided with a motor frame on one side of the gear ring 602. A motor 9 is installed in the motor frame, and a third gear 603 meshing with the gear ring 602 is installed on the output shaft of the motor 9. The annular plate 603 is provided in two parts;

[0089] Directions:

[0090] During detection, the motor 9 can be started to drive the third gear 601 to rotate, the third gear 601 drives the ring gear 602 to rotate, and the ring gear 602 drives the ultrasonic detection device 604 distributed in an annular manner on the outside of the annular plate 603 to rotate to detect cracks on the outside of the oil pipeline. This structure is beneficial for uniform and stable detection of cracks on the outside of pipelines of different diameters, avoiding missed detection when detecting pipeline cracks.

[0091] After the crack detection of the pipeline is completed, the connection between the third connecting rod 306 and the rotating rod 2 is released, the bolt 8 is removed, the collar 1 and the annular plate 603 are separated from each other, and removed from the oil pipeline. After removal, in order to avoid damage to the ultrasonic detection device 604, the two collars 1 should be fixed together in time.

[0092] In combination with all the embodiments, the method of using the present invention is as follows:

[0093] S1: Installation and debugging: First, disassemble the collar 1 and the annular plate 603 into the upper and lower collars and the upper and lower annular plates, install the collar 1 and the annular plate 603 together on the oil pipeline, and then install the moving wheel group. After installation, adjust the distance between the first connecting rod 201 and the second connecting rod 202 so that the three moving wheels 205 surrounding the outer side of the oil pipeline are closely attached to the surface of the oil pipeline;

[0094] S2: Detect cracks: Start the motor 9 to drive the third gear 601 to rotate, so that the ultrasonic detection device 604 on the annular plate 603 rotates to detect cracks on the outside of the oil pipeline, and push the device until it hits the elbow of the oil pipeline;

[0095] S3: Going over the elbow connection: By starting the dual-axis linear motor 12, the circle formed by the three moving wheels 205 becomes larger, and the moving wheel group is flipped so that some of the moving wheels 205 go over the elbow connection. If it is impossible to go over, the diameter of the circle formed by the three moving wheels 205 can be further enlarged by adjusting the distance between the first connecting rod 201 and the second connecting rod 202. After going over, the dual-axis linear motor 12 is started in the reverse direction to reset;

[0096] S4: Recycling and preservation: After the detection is completed, the connection between the third connecting rod 306 and the rotating rod 2 is released, the bolt 8 is removed, the collar 1 and the annular plate 603 are separated from each other, and removed from the oil pipeline. After removal, in order to avoid damage to the ultrasonic detection device 604, the collar 1 and the annular plate 603 must be fixed together and placed.

[0097] All components and connection methods of components not discussed in this application belong to the known technologies in this technical field and can be directly applied without further explanation.

[0098] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0099] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0100] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel oil pipeline crack detection device, comprising a collar, wherein the oil pipeline crack detection device is arranged inside the collar, and the collar is divided into an upper collar and a lower collar, characterized in that; The lower ring is connected to a first moving wheel set, and the upper ring is symmetrically provided with two second moving wheel sets; The first moving wheel group and the second moving wheel group are both provided with a connecting block, a telescopic component and a moving wheel; one end of the telescopic component is connected to the connecting block, and the other end is connected to the moving wheel.

2. A steel petroleum pipeline crack detection device according to claim 1, characterized in that: The telescopic assembly includes a second connecting rod connected to the connecting block and a first connecting rod connected to the second connecting rod; The second connecting rod is a hollow rod, and the other end of the first connecting rod is connected to the moving wheel; The first connecting rod can move forward and backward in the second connecting rod, and the distance between the first connecting rod and the second connecting rod is adjusted by a locking member arranged on the second connecting rod.

3. A steel petroleum pipeline crack detection device according to claim 2, characterized in that: The first moving wheel set further comprises a round rod, and the round rod is provided with a first connecting block; The second moving wheel set further includes a rotating rod, and a second connecting block is arranged on the rotating rod.

4. A steel petroleum pipeline crack detection device according to claim 3, characterized in that: The second connecting block in the second moving wheel set is connected to a plurality of, at least two, moving wheels via a telescopic assembly.

5. A steel petroleum pipeline crack detection device according to claim 4, characterized in that: The upper end of the second movable wheel group is provided with a swing device, and the lower end is provided with a follow-up swing mechanism, and the plane where the end surface of the ring is located is the first plane.

6. A steel petroleum pipeline crack detection device according to claim 5, characterized in that: The swing device comprises an arc-shaped rack fixedly connected to the collar, and a first gear is meshed on the arc-shaped rack; The first gear is connected to the rotating rod, a circular groove is provided on one side of the first gear of the rotating rod, and a second protrusion is provided in the circular groove; A rotating shaft is arranged on the second protrusion, the axis of the transmission shaft is perpendicular to the first plane, the rotating shaft is connected to the transverse plate, and the transverse plate is fixedly connected to the collar.

7. A steel petroleum pipeline crack detection device according to claim 6, characterized in that: The following swing mechanism comprises a third connecting rod movably connected to the rotating rod, the third connecting rod is movably connected to the sixth connecting rod, and the other end of the sixth connecting rod is movably connected to the seventh connecting rod; The axis of the seventh connecting rod is perpendicular to the first plane, and the seventh connecting rod is movably connected to the vertical plate arranged on the collar through a limiting rod; A sliding groove is provided in the vertical plate for the limiting rod to slide.

8. A steel petroleum pipeline crack detection device according to claim 7, characterized in that: The horizontal plate is provided with a double-output-shaft linear motor, and the output shaft of the double-output-shaft linear motor is connected to the fifth connecting rod; The fifth connecting rod can move forward and backward on the output shaft of the double-output-shaft linear motor, and the other end of the fifth connecting rod is movably connected to the fourth connecting rod; The fourth connecting rod is movably connected with a first protrusion, and the first protrusion is arranged on the rotating rod.

9. A steel petroleum pipeline crack detection device according to claim 8, characterized in that: The first connecting block in the first moving wheel set is connected to a plurality of, at least two, moving wheels via a telescopic assembly.

10. A steel petroleum pipeline crack detection device according to claim 9, characterized in that: A transmission rack extending up and down is arranged between the seventh connecting rod and the limiting rod, and the transmission rack is movably connected to the vertical plate arranged on the sleeve ring through the limiting rod; The two ends of the round rod are provided with second gears meshing with the transmission rack, and the second gear further restricts the transmission rack on the vertical plate.

11. A steel petroleum pipeline crack detection device according to claim 10, characterized in that: The oil pipe crack detection device comprises a plurality of ultrasonic detection devices, which are evenly and staggeredly arranged on an annular plate, the annular plate is arranged in a slide groove of a sleeve ring, and the annular plate is arranged in two parts, an upper part and an lower part.

12. A steel petroleum pipeline crack detection device according to claim 11, characterized in that: A gear ring is arranged on the outer end of the annular plate, a motor frame is arranged on one side of the gear ring of the sleeve ring, a motor is installed in the motor frame, and a third gear meshing with the gear ring is installed on the motor output shaft.

13. A steel petroleum pipeline crack detection device according to any one of claims 1 to 12, characterized in that: The moving wheel is a ball wheel, the diameter of the circle formed by the oil pipe crack detection device is larger than the diameter of the oil pipe elbow; the upper sleeve ring and the lower sleeve ring are connected by bolts.

14. A method for using a steel petroleum pipeline crack detection device, characterized in that: The following steps are involved: S1: Installation and debugging steps; S2: crack detection step; S3: Steps to cross the elbow connection; S4: Recycling and preservation steps.

15. The method for using the steel petroleum pipeline crack detection device according to claim 14, characterized in that: The steps are specifically as follows: S1: Installation and commissioning: First, disassemble the collar and the annular plate into upper and lower collars and upper and lower annular plates, install the collar and the annular plate together on the oil pipeline, and then install the moving wheel set. After installation, adjust the distance between the first connecting rod and the second connecting rod so that the three moving wheels surrounding the outer side of the oil pipe are in close contact with the surface of the oil pipe; S2: Detect cracks: Start the motor to drive the third gear to rotate, so that the ultrasonic detection device on the annular plate rotates to detect cracks on the outside of the oil pipeline, and push the device until it hits the elbow of the oil pipeline; S3: Going over the elbow connection: By starting the dual-axis linear motor, the circle formed by the three moving wheels becomes larger, and the moving wheel group is flipped so that some of the moving wheels go over the elbow connection. If it is impossible to go over, the diameter of the circle formed by the three moving wheels can be further enlarged by adjusting the distance between the first connecting rod and the second connecting rod. After going over, the dual-axis linear motor is started in the reverse direction to reset; S4: Recovery and preservation steps: After the detection is completed, release the connection between the third connecting rod and the rotating rod, remove the bolts, separate the collar and the annular plate from top to bottom, and remove them from the oil pipeline. After removal, in order to avoid damage to the ultrasonic detection device, the collar and the annular plate must be fixed together and placed.

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