A detection device and method for sucker rod ends

Abstract

This invention discloses a detection device and method for sucker rod ends, belonging to the field of sucker rod detection. The detection device includes two conveyor lines, two detection modules, a transfer module, and a water supply module; the two conveyor lines are parallel and spaced apart; the transfer module is used to transfer the sucker rod from one conveyor line to the other; each detection module includes a support, a sliding support, and multiple detection units. The sliding support is slidably arranged on the support, and each detection unit includes a hinge frame, a cylinder, and an ultrasonic probe. One end of the cylinder and the hinge frame are hinged and spaced apart on the support, and the output end of the cylinder is hinged to the middle of the hinge frame; the water supply module is used to spray coupling water onto both ends of the sucker rod. The detection device for sucker rod ends provided by this invention allows each ultrasonic probe to adaptably and stably fit the variable-diameter end, resulting in high detection efficiency and accurate detection.

Description

Technical Field

[0001] This invention belongs to the field of sucker rod testing, specifically relating to a testing device and method for the end of a sucker rod. Background Technology

[0002] Sucker rods are a crucial component of oilfield pumping units, and the safety of their rod heads significantly impacts the stability and reliability of the entire system. In actual production, due to harsh working environments and complex loads, sucker rod heads may develop defects such as cracks, corrosion, and uneven wear. Transverse cracks are the most common type of crack due to the axial loads and tensile stresses during use. The presence of cracks reduces the strength and stability of the sucker rod, and in severe cases, may even lead to breakage and accidents. Therefore, regular non-destructive testing of sucker rod heads is a vital step in ensuring normal oilfield production.

[0003] Currently, the traditional non-destructive testing methods for sucker rod ends are magnetic particle testing or magnetic flux leakage testing. Magnetic particle testing relies on manual labor and has low testing efficiency. Magnetic flux leakage testing can achieve automated testing and significantly improve testing efficiency. However, since both ends of the sucker rod are variable diameter sections, the abrupt change in size makes it impossible to achieve a stable fit of the magnetic flux leakage probe, resulting in poor testing results. Summary of the Invention

[0004] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides a detection device and method for sucker rod ends. The purpose is that each ultrasonic probe can adaptably and stably fit with the variable diameter end, and complete the circumferential detection of the entire end during the sliding process. This not only has high detection efficiency, but also achieves accurate detection.

[0005] In a first aspect, the present invention provides a detection device for the tip of a sucker rod, the detection device comprising two conveyor lines, two detection modules, a transfer module and a water supply module;

[0006] The two conveyor lines are parallel and spaced apart, and each conveyor line is used for reciprocating conveying of sucker rods;

[0007] The transfer module is used to transfer the sucker rod from one of the conveyor lines to another of the conveyor lines;

[0008] One detection module is located at one end of one of the conveyor lines and is used to detect one end of the sucker rod. Another detection module is located at the other end of another conveyor line and is used to detect the other end of the sucker rod. Each detection module includes a bracket, a sliding support, and multiple detection units. The sliding support is slidably arranged on the bracket, and the sliding direction of the sliding support is consistent with the conveying direction of the conveyor line. Multiple detection units are located on the sliding support and are evenly spaced along the circumference of the sucker rod. Each detection unit includes a hinge frame, a cylinder, and an ultrasonic probe. One end of the cylinder and the hinge frame are hinged and spaced apart on the bracket. The output end of the cylinder is hinged to the middle of the hinge frame to drive the other end of the hinge frame to approach or move away from the outer peripheral wall of the sucker rod. The ultrasonic probes are all located on the other end of the hinge frame and are all used to slide in contact with the end of the sucker rod for non-destructive defect detection.

[0009] The water supply module is used to spray coupling water onto both ends of the sucker rod.

[0010] Optionally, the transfer module includes a drive unit and multiple transfer rods. The drive unit is located on the conveyor line, and the conveying end of the drive unit is connected to each of the transfer rods to drive each transfer rod to rise and fall relative to the conveyor line. The multiple transfer rods are arranged at intervals along the conveying direction of the conveyor line. One side of each transfer rod is an inclined surface, so that after the transfer rod rises, the sucker rod can slide along the inclined surface to another conveyor line after disengaging from one of the conveyor lines.

[0011] Optionally, the driving component includes a driving cylinder, multiple transmission rods, and multiple transmission frames. The driving cylinder is hinged to the conveyor line. The output end of the driving cylinder is connected to one end of each transmission rod. The other end of each transmission rod is hinged to one end of the corresponding transmission frame. Each transmission frame has a Z-shaped structure. The middle part of each transmission frame is rotatably inserted into the conveyor line. The other end of each transmission frame is rotatably connected to the corresponding material transfer rod to drive the material transfer rod to rotate.

[0012] Optionally, the driving component is a lifting cylinder, which is used to drive the rotating rod to rise and fall.

[0013] Optionally, the detection module further includes a limiting rod, the axis of which extends along the conveying direction of the conveying line to axially limit the sucker rod. The limiting rod is located on the bracket and passes through the sliding support.

[0014] Optionally, the detection module further includes a first linear module and a lifting plate. The first linear module is located on the sliding support and is used to drive the lifting plate to move up and down. The plurality of detection units are all located on the lifting plate.

[0015] Optionally, the bracket has a second linear module for driving the sliding support to slide.

[0016] Optionally, each of the conveying lines includes a support frame, multiple bidirectional motors, and multiple V-shaped rollers. The multiple bidirectional motors are arranged at intervals on the support frame, and the output end of each bidirectional motor is connected to the corresponding V-shaped roller for conveying the sucker rod.

[0017] In a second aspect, the present invention provides a method for detecting the tip of a sucker rod, the method being based on the detection device described in the first aspect, the method comprising:

[0018] S1. Place the sucker rod on one of the conveyor lines, and convey one end of the sucker rod to one of the detection modules through the conveyor line;

[0019] S2. Based on one of the detection modules, each of the cylinders drives the corresponding hinge frame to rotate toward the sucker rod, so that each of the ultrasonic probes is in contact with the sucker rod. The sliding support drives multiple ultrasonic probes to slide toward one end of the sucker rod, so that after the multiple ultrasonic probes slide, they perform non-destructive defect detection on one end of the sucker rod. Each of the cylinders drives the corresponding hinge frame to rotate away from the sucker rod, so that each of the ultrasonic probes moves away from the sucker rod.

[0020] S3. Using the transfer module, the sucker rod is transferred from one of the conveying lines to another of the conveying lines, and the other end of the sucker rod is transferred to another detection module via one of the conveying lines.

[0021] S4. Based on another detection module, each cylinder drives the corresponding hinge frame to rotate toward the sucker rod, so that each ultrasonic probe is in contact with the sucker rod. The sliding support drives multiple ultrasonic probes to slide toward the other end of the sucker rod, so that after the multiple ultrasonic probes slide, they perform non-destructive defect detection on the other end of the sucker rod. Each cylinder drives the corresponding hinge frame to rotate away from the sucker rod, so that each ultrasonic probe moves away from the sucker rod.

[0022] Optionally, the plurality of detection units are divided into a first detection group and a second detection group, the first detection group and the second detection group are arranged at intervals along the axial direction of the sucker rod, and the plurality of detection units in the first detection group and the plurality of detection units in the second detection group are arranged in a staggered manner.

[0023] Each of the sliding supports is configured such that the ultrasonic probe on the sliding support slides toward the corresponding end of the sucker rod, and the corresponding end of the sucker rod is detected by the first detection group;

[0024] The sliding support is slid in the opposite direction, and the corresponding end of the sucker rod is detected by the second detection group.

[0025] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0026] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0027] For the detection device for the end of a sucker rod provided in this embodiment of the invention, when performing defect detection on both ends of the sucker rod, firstly, the sucker rod is placed on a conveyor line, and one end of the sucker rod is conveyed to a detection module (the detection module on the left) via the conveyor line. Then, based on the detection module, each cylinder drives the corresponding hinge frame to rotate towards the sucker rod, so that each ultrasonic probe is in contact with the sucker rod, driving multiple ultrasonic probes on the sliding support to slide towards one end of the sucker rod, so that after the multiple ultrasonic probes slide, they perform non-destructive defect detection on one end of the sucker rod. During the sliding process of the sliding support, multiple ultrasonic probes can be driven to slide, and under the action of the cylinders and hinge frames, each ultrasonic probe will adaptably and stably contact the variable diameter end, and complete the circumferential detection of the entire end during the sliding process, which not only has high detection efficiency, but also achieves accurate detection. Furthermore, each cylinder drives the corresponding hinge frame to rotate away from the sucker rod, so that each ultrasonic probe is away from the sucker rod.

[0028] Next, the sucker rod is transferred from one conveyor line to another using a transfer module to facilitate inspection of the other end. The other end of the sucker rod is then transported via another conveyor line to another inspection module (the inspection module on the right). Finally, based on this other inspection module, the above steps are repeated to inspect the other end.

[0029] In other words, the detection device for the end of a sucker rod provided in this embodiment of the invention allows each ultrasonic probe to adaptably and stably fit with the variable diameter end, and complete the circumferential detection of the entire end during the sliding process. This not only provides high detection efficiency but also enables accurate detection. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a detection device for the end of a sucker rod provided in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the detection module provided in an embodiment of the present invention;

[0032] Figure 3 This is an assembly diagram of the detection unit provided in an embodiment of the present invention;

[0033] Figure 4 This is an assembly diagram of the ultrasonic probe provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the transfer module provided in an embodiment of the present invention;

[0035] Figure 6 yes Figure 1 A magnified view of a portion of the image;

[0036] Figure 7 This is a flowchart of a method for detecting the tip of a sucker rod provided in an embodiment of the present invention.

[0037] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0038] 1. Conveyor line; 11. Support frame; 111. Stop bar; 12. Bidirectional motor; 13. V-shaped roller; 2. Detection module; 21. Bracket; 211. Second linear module; 22. Sliding support; 23. Detection unit; 231. Articulated frame; 232. Cylinder; 233. Ultrasonic probe; 234. Tooling trolley; 24. Limiting rod; 25. First linear module; 26. Lifting plate; 3. Transfer module; 31. Drive component; 311. Drive cylinder; 312. Transmission rod; 313. Transmission frame; 32. Transfer rod; 321. Inclined surface; 100. Suction rod. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] Example:

[0045] Figure 1 This is a schematic diagram of a detection device for the end of a sucker rod provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the detection device includes two conveyor lines 1, two detection modules 2, a transfer module 3, and a water supply module.

[0046] Two conveyor lines 1 are parallel and spaced apart, and each conveyor line 1 is used to reciprocate to convey the sucker rod 100 (both the conveyor line 1 and the sucker rod 100 extend along the X direction, and the conveyor line 1 can convey the sucker rod 100 not only to the left, but also to the right).

[0047] The transfer module 3 is used to transfer the sucker rod 100 from one conveyor line 1 to another conveyor line 1.

[0048] One detection module 2 is located at one end of a conveyor line 1 and is used to detect one end of the sucker rod 100. Another detection module 2 is located at the other end of another conveyor line 1 and is used to detect the other end of the sucker rod 100.

[0049] Figure 2 This is a schematic diagram of the detection module provided in an embodiment of the present invention, as shown below. Figure 2 As shown, each detection module 2 includes a bracket 21, a sliding support 22 and multiple detection units 23. The sliding support 22 is slidably arranged on the bracket 21, and the sliding direction of the sliding support 22 is consistent with the conveying direction of the conveying line 1. The multiple detection units 23 are all located on the sliding support 22, and the multiple detection units 23 are evenly spaced along the circumference of the sucker rod 100.

[0050] Figure 3 This is an assembly diagram of the detection unit provided in an embodiment of the present invention, as shown below. Figure 3 As shown, each detection unit 23 includes a hinge frame 231, a cylinder 232, and an ultrasonic probe 233. One end of the cylinder 232 and the hinge frame 231 are hinged and spaced apart on the support 21. The output end of the cylinder 232 is hinged to the middle of the hinge frame 231 to drive the other end of the hinge frame 231 to approach or move away from the outer peripheral wall of the sucker rod 100. The ultrasonic probes 233 are all located on the other end of the hinge frame 231, and the ultrasonic probes 233 (which emit and receive ultrasonic surface waves) are all used to slide in contact with the end of the sucker rod 100 to perform non-destructive defect detection.

[0051] The water supply module is used to spray coupling water onto both ends of the sucker rod 100.

[0052] For the detection device for the end of a sucker rod provided in this embodiment of the invention, when performing defect detection on both ends of the sucker rod 100, firstly, the sucker rod 100 is placed on a conveyor line 1, and one end of the sucker rod 100 is conveyed to a detection module 2 (the detection module 2 on the left) through the conveyor line 1. Then, based on the detection module 2, each cylinder 232 drives the corresponding hinge frame 231 to rotate toward the sucker rod 100, so that each ultrasonic probe 233 is in contact with the sucker rod 100, driving multiple ultrasonic probes 233 on the sliding support 22 to slide toward one end of the sucker rod 100, so that after the multiple ultrasonic probes 233 slide, non-destructive defect detection is performed on one end of the sucker rod 100. During the sliding of the sliding support 22, multiple ultrasonic probes 233 can be slid. Under the action of the cylinder 232 and the hinge frame 231, each ultrasonic probe 233 will adaptably and stably fit with the variable diameter end, and complete the circumferential detection of the entire end during the sliding process. This not only has high detection efficiency but also achieves accurate detection. Furthermore, by driving the corresponding hinge frame 231 to rotate away from the sucker rod 100 through each cylinder 232, each ultrasonic probe 233 is moved away from the sucker rod 100.

[0053] Next, the sucker rod 100 is transferred from one conveyor line 1 to another conveyor line 1 using the transfer module 3, so as to facilitate the inspection of the other end. The other end of the sucker rod 100 is then transported to another inspection module 2 (the inspection module 2 on the right) via another conveyor line 1. Finally, based on the other inspection module 2, the above steps are repeated to inspect the other end.

[0054] In other words, the detection device for the end of a sucker rod provided in this embodiment of the invention allows each ultrasonic probe 233 to adaptably and stably fit with the variable diameter end, and to complete the circumferential detection of the entire end during the sliding process. This not only provides high detection efficiency but also enables accurate detection.

[0055] It is easy to understand that during the ultrasonic probe 233's contact testing with the end cap, the coupling water sprayed by the water supply module can couple the ultrasonic probe 233, avoiding the problem of detection failure caused by a gap between the ultrasonic probe 233 and the end cap. Furthermore, the detection device provided by this invention can perform sequential testing of both ends of the sucker rod 100 without needing to flip the sucker rod 100, resulting in high testing efficiency.

[0056] For example, each detection unit 23 also includes a tooling trolley 234, which is located on the other end of the articulated frame 231. The wheels of the tooling trolley 234 slide against the outer peripheral wall of the sucker rod 100, and the ultrasonic probe 233 is located on the tooling trolley 234 (see...). Figure 4The tooling trolley 234 provides reliable support for the ultrasonic probe 233, facilitating its installation.

[0057] For example, the hinge frame 231 has a V-shaped structure.

[0058] It should be noted that the detection principle of the ultrasonic probe 233 is that when the incident angle of the ultrasonic beam is greater than the second critical angle, the beam undergoes waveform conversion, forming a surface wave on the solid medium surface that propagates along the surface and can detect defects within a depth range of up to twice the wavelength from the surface.

[0059] Figure 5 This is a schematic diagram of the transfer module provided in an embodiment of the present invention. Figure 6 yes Figure 1 A magnified view of the part, combined with Figure 5 and Figure 6 As shown, the transfer module 3 includes a drive unit 31 and multiple transfer rods 32. The drive unit 31 is located on the conveyor line 1. The conveying end of the drive unit 31 is connected to each transfer rod 32 in a transmission manner to drive each transfer rod 32 to rise and fall relative to the conveyor line 1 (Z direction). The multiple transfer rods 32 are arranged at intervals along the conveying direction of the conveyor line 1. One side of the transfer rod 32 is an inclined surface 321 so that after the transfer rod 32 rises, the sucker rod 100 can slide along the inclined surface 321 to another conveyor line 1 after leaving one conveyor line 1.

[0060] In the above embodiment, the driving component 31 can drive multiple transfer rods 32 to rise relative to the conveyor line 1, so that the multiple transfer rods 32 push the sucker rod 100 through the inclined surface 321 during the rising process, and the sucker rod 100 slides down to another conveyor line 1 with the cooperation of the inclined surface 321, thereby realizing the transfer and facilitating the subsequent inspection of the other end.

[0061] In one implementation of the present invention, the driving component 31 includes a driving cylinder 311, a plurality of transmission rods 312, and a plurality of transmission frames 313. The driving cylinder 311 is hinged to the conveyor line 1. The output end of the driving cylinder 311 is connected to one end of each transmission rod 312. The other end of each transmission rod 312 is hinged to one end of the corresponding transmission frame 313. Each transmission frame 313 has a Z-shaped structure. The middle part of each transmission frame 313 is rotatably inserted into the conveyor line 1. The other end of each transmission frame 313 is rotatably connected to the corresponding rotating rod 32 to drive the rotating rod 32 to rotate.

[0062] In the above embodiment, the transmission rod 312 is moved by the drive cylinder 311, thereby realizing the rotation of the transmission frame 313. During the rotation of the transmission frame 313, the material transfer rod 32 will rotate, causing the material transfer rod 32 to gradually move upward during the rotation process, and causing the inclined surface 321 to gradually swing to the top, thereby lifting the sucker rod 100 and causing the sucker rod 100 to move down to another conveyor line 1 through multiple inclined surfaces 321.

[0063] For example, one end of the drive cylinder 311 is connected to the transmission rod 312 on the left, while the other transmission rods 312 are connected in sequence through connecting rods, so that the linkage of multiple transmission rods 312 can be realized through the same drive cylinder 311, thereby realizing the linkage control of multiple material transfer rods 32.

[0064] In another implementation of the present invention, the driving component 31 is a lifting cylinder, which is used to drive the rotating rod 32 to rise and fall. The lifting cylinder can directly drive the rotating rod 32 to rise and fall, and similarly, the sucker rod 100 can be lifted and then moved down to another conveyor line 1 via the inclined surface 321.

[0065] It should be noted that in other embodiments of the present invention, the transfer module 3 may also be a robotic arm, and the present invention does not limit this.

[0066] See you again Figure 2 The detection module 2 also includes a limiting rod 24. The axis of the limiting rod 24 extends along the conveying direction of the conveying line 1 to axially limit the sucker rod 100. The limiting rod 24 is located on the bracket 21 and passes through the sliding support 22.

[0067] In the above embodiment, the limiting rod 24 can accurately position the sucker rod 100 during the conveying process, avoiding the end of the sucker rod 100 being too far from the detection module 2 to detect the end.

[0068] In this embodiment, the detection module 2 further includes a first linear module 25 and a lifting plate 26. The first linear module 25 is located on the sliding support 22 and is used to drive the lifting plate 26 to rise and fall. Multiple detection units 23 are located on the lifting plate 26.

[0069] In the above embodiment, the first linear module 25 can easily raise and lower the lifting plate 26, thereby raising and lowering multiple detection units 23, and further adjusting the central axis formed by the detection units 23. When detecting sucker rods 100 of different sizes, the height of the central axis of the sucker rods 100 is inconsistent (the height of the support surface of the conveyor line 1 is constant). By adjusting the central axis formed by the detection units 23, it can be made coaxial with the central axis of the sucker rods 100 of different sizes, thereby realizing the detection of sucker rods 100 of different sizes.

[0070] In addition, the bracket 21 has a second linear module 211, which is used to drive the sliding support 22 to slide, thereby realizing the automated control of the sliding support 22.

[0071] For example, both the first linear module 25 and the second linear module 211 may include a linear motor, a lead screw, and a slider, thereby achieving high-precision control. This structure is a conventional technique in the field and will not be described in detail here.

[0072] See you again Figure 1 Each conveyor line 1 includes a support frame 11, multiple bidirectional motors 12 and multiple V-shaped rollers 13. The multiple bidirectional motors 12 are arranged at intervals on the support frame 11, and the output end of each bidirectional motor 12 is connected to the corresponding V-shaped roller 13 for transmission to convey the sucker rod 100.

[0073] In the above embodiment, the support frame 11 can support multiple bidirectional motors 12, and drive the V-shaped rollers 13 to rotate through the bidirectional motors 12, thereby frictionally conveying the sucker rod 100.

[0074] For example, the V-shaped roller 13 has a V-shaped groove to enable positioning of the sucker rod 100. The support frame 11 extends in the X direction.

[0075] In addition, the support frame 11 has multiple spaced-apart stop bar groups, each of which includes two spaced-apart stop bars 111, which can also achieve clamping and positioning of the sucker rod 100 and prevent the sucker rod 100 from disengaging from the V-shaped roller 13.

[0076] Figure 7 This is a flowchart of a method for detecting the tip of a sucker rod provided in an embodiment of the present invention, as shown below. Figure 7 As shown, this detection method is based on the detection device described above, and the detection method includes:

[0077] S1. Place the sucker rod 100 on a conveyor line 1, and convey one end of the sucker rod 100 to a detection module 2 through the conveyor line 1.

[0078] S2. Based on a detection module 2, each cylinder 232 drives the corresponding hinge frame 231 to rotate toward the sucker rod 100, so that each ultrasonic probe 233 is in contact with the sucker rod 100. This drives multiple ultrasonic probes 233 on the sliding support 22 to slide toward one end of the sucker rod 100, so that after the multiple ultrasonic probes 233 slide, they perform non-destructive defect detection on one end of the sucker rod 100. Each cylinder 232 drives the corresponding hinge frame 231 to rotate away from the sucker rod 100, so that each ultrasonic probe 233 moves away from the sucker rod 100.

[0079] It should be noted that after step S2, the detection method further includes:

[0080] The sucker rod 100 is transported a distance towards another detection module 2 via a conveyor line 1, so that the sucker rod 100 is completely separated from one detection module 2 before being transferred, thus avoiding interference from the detection unit 23 during the transfer process.

[0081] S3. Using the transfer module 3, the sucker rod 100 is transferred from one conveyor line 1 to another conveyor line 1, and the other end of the sucker rod 100 is transported to another detection module 2 through a conveyor line 1.

[0082] S4. Based on another detection module 2, each cylinder 232 drives the corresponding hinge frame 231 to rotate toward the sucker rod 100, so that each ultrasonic probe 233 is in contact with the sucker rod 100. This drives multiple ultrasonic probes 233 on the sliding support 22 to slide toward the other end of the sucker rod 100, so that after the multiple ultrasonic probes 233 slide, they perform non-destructive defect detection on the other end of the sucker rod 100. Each cylinder 232 drives the corresponding hinge frame 231 to rotate away from the sucker rod 100, so that each ultrasonic probe 233 moves away from the sucker rod 100.

[0083] After step S4, the sucker rod 100 is conveyed to the left via another conveyor line 1 (see...). Figure 1 This facilitates subsequent material feeding.

[0084] The present invention provides a method for detecting the end of a sucker rod, wherein each ultrasonic probe 233 can adaptably and stably fit with the end of the variable diameter, and complete the circumferential detection of the entire end during the sliding process, which not only has high detection efficiency, but also achieves accurate detection.

[0085] In this embodiment, the plurality of detection units 23 are divided into a first detection group and a second detection group, which are arranged at intervals along the axial direction of the sucker rod 100 (see...). Figure 3 Furthermore, the multiple detection units 23 of the first detection group and the multiple detection units 23 of the second detection group are arranged in a staggered manner.

[0086] Each sliding support 22 is configured such that the ultrasonic probe 233 on the sliding support 22 slides toward the corresponding end of the sucker rod 100, and the corresponding end of the sucker rod 100 is detected by the first detection group.

[0087] The sliding support 22 is slid in the opposite direction, and the corresponding end of the sucker rod 100 is inspected by the second inspection group.

[0088] In the above embodiment, by dividing the multiple detection units 23 into a first detection group and a second detection group with axial spacing, the problem of interference between adjacent ultrasonic probes 233 during installation or use can be avoided. Furthermore, the reciprocating sliding support 22 allows the first and second detection groups to detect the sucker rod 100 sequentially, resulting in higher detection accuracy.

[0089] In a preferred embodiment of the present invention, the number of ultrasonic probes 233 can be eight, with four forming a first detection group and the other four forming a second detection group. Furthermore, the arc of the sucker rod 100 end detected by each ultrasonic probe 233 is 45°.

[0090] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A detection device for the end of a sucker rod, characterized in that, The detection device includes two conveyor lines (1), two detection modules (2), a transfer module (3), and a water supply module; The two conveyor lines (1) are parallel and spaced apart, and each of the conveyor lines (1) is used to reciprocate to convey the sucker rod (100). The transfer module (3) is used to transfer the sucker rod (100) from one of the conveyor lines (1) to another of the conveyor lines (1); One detection module (2) is located at one end of one conveyor line (1) and is used to detect one end of the sucker rod (100). Another detection module (2) is located at the other end of another conveyor line (1) and is used to detect the other end of the sucker rod (100). Each detection module (2) includes a bracket (21), a sliding support (22), and multiple detection units (23). The sliding support (22) is slidably arranged on the bracket (21), and the sliding direction of the sliding support (22) is consistent with the conveying direction of the conveyor line (1). Multiple detection units (23) are located on the sliding support (22), and multiple detection units (23) are arranged along the sucker rod (100). The sucker rods (100) are arranged evenly around the circumference. Each of the detection units (23) includes a hinge frame (231), a cylinder (232), and an ultrasonic probe (233). One end of the cylinder (232) and the hinge frame (231) are hinged and arranged at intervals on the support (21). The output end of the cylinder (232) is hinged to the middle of the hinge frame (231) to drive the other end of the hinge frame (231) to approach or move away from the outer circumferential wall of the sucker rod (100). The ultrasonic probes (233) are all located on the other end of the hinge frame (231), and the ultrasonic probes (233) are all used to slide in contact with the end of the sucker rod (100) to perform non-destructive defect detection. The water supply module is used to spray coupling water onto both ends of the sucker rod (100); The transfer module (3) includes a drive unit (31) and multiple transfer rods (32). The drive unit (31) is located on the conveyor line (1). The conveying end of the drive unit (31) is connected to each transfer rod (32) to drive each transfer rod (32) to rise and fall relative to the conveyor line (1). The multiple transfer rods (32) are arranged at intervals along the conveying direction of the conveyor line (1). One side of the transfer rod (32) is an inclined surface (321) so that after the transfer rod (32) rises, the sucker rod (100) can slide along the inclined surface (321) to another conveyor line (1) after leaving one of the conveyor lines (1).

2. The detection device for the end of a sucker rod according to claim 1, characterized in that, The driving component (31) includes a driving cylinder (311), multiple transmission rods (312), and multiple transmission frames (313). The driving cylinder (311) is hinged to the conveyor line (1). The output end of the driving cylinder (311) is connected to one end of each transmission rod (312). The other end of each transmission rod (312) is hinged to one end of the corresponding transmission frame (313). Each transmission frame (313) has a Z-shaped structure. The middle part of each transmission frame (313) is rotatably inserted into the conveyor line (1). The other end of each transmission frame (313) is rotatably connected to the corresponding rotating rod (32) to drive the rotating rod (32) to rotate.

3. The detection device for the end of a sucker rod according to claim 1, characterized in that, The driving component (31) is a lifting cylinder, which is used to drive the rotating rod (32) to rise and fall.

4. The detection device for the end of a sucker rod according to claim 1, characterized in that, The detection module (2) also includes a limiting rod (24), the axis of which extends along the conveying direction of the conveying line (1) to axially limit the sucker rod (100). The limiting rod (24) is located on the bracket (21) and passes through the sliding support (22).

5. A detection device for the end of a sucker rod according to any one of claims 1-4, characterized in that, The detection module (2) further includes a first linear module (25) and a lifting plate (26). The first linear module (25) is located on the sliding support (22) and is used to drive the lifting plate (26) to rise and fall. The multiple detection units (23) are all located on the lifting plate (26).

6. A detection device for the end of a sucker rod according to any one of claims 1-4, characterized in that, The bracket (21) has a second linear module (211) for driving the sliding support (22) to slide.

7. A detection device for the end of a sucker rod according to any one of claims 1-4, characterized in that, Each of the conveying lines (1) includes a support frame (11), a plurality of bidirectional motors (12) and a plurality of V-shaped rollers (13). The plurality of bidirectional motors (12) are arranged at intervals on the support frame (11). The output end of each bidirectional motor (12) is connected to the corresponding V-shaped roller (13) for conveying the sucker rod (100).

8. A method for detecting the tip of a sucker rod, characterized in that, The detection method is based on the detection apparatus as described in any one of claims 1-7, and the detection method includes: S1. Place the sucker rod (100) on a conveyor line (1) and convey one end of the sucker rod (100) to a detection module (2) through the conveyor line (1). S2. Based on one of the detection modules (2), each cylinder (232) drives the corresponding hinge frame (231) to rotate toward the sucker rod (100), so that each ultrasonic probe (233) is in contact with the sucker rod (100), and drives multiple ultrasonic probes (233) on the sliding support (22) to slide toward one end of the sucker rod (100), so that after the multiple ultrasonic probes (233) slide, they perform non-destructive defect detection on one end of the sucker rod (100), and each cylinder (232) drives the corresponding hinge frame (231) to rotate away from the sucker rod (100), so that each ultrasonic probe (233) moves away from the sucker rod (100). S3. Using the transfer module (3), the sucker rod (100) is transferred from one of the conveying lines (1) to another of the conveying lines (1), and the other end of the sucker rod (100) is transferred to another of the detection modules (2) through one of the conveying lines (1). S4. Based on another detection module (2), each cylinder (232) drives the corresponding hinge frame (231) to rotate toward the sucker rod (100), so that each ultrasonic probe (233) is in contact with the sucker rod (100), and drives multiple ultrasonic probes (233) on the sliding support (22) to slide toward the other end of the sucker rod (100), so that after the multiple ultrasonic probes (233) slide, they perform non-destructive defect detection on the other end of the sucker rod (100), and each cylinder (232) drives the corresponding hinge frame (231) to rotate away from the sucker rod (100), so that each ultrasonic probe (233) moves away from the sucker rod (100).

9. A method for detecting the end of a sucker rod according to claim 8, characterized in that, The plurality of detection units (23) are divided into a first detection group and a second detection group, the first detection group and the second detection group are arranged at intervals along the axial direction of the sucker rod (100), and the plurality of detection units (23) of the first detection group and the plurality of detection units (23) of the second detection group are arranged in a staggered manner; Each of the sliding supports (22) is configured such that the ultrasonic probe (233) on the sliding support (22) slides toward the corresponding end on the sucker rod (100), and the corresponding end on the sucker rod (100) is detected by the first detection group; The sliding support (22) is slid in the opposite direction, and the corresponding end of the sucker rod (100) is detected by the second detection group.

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