Phased array ultrasonic detection flaw detection equipment for drill rod

Abstract

The utility model relates to drill rod phased array ultrasonic flaw detection equipment which comprises a base, the top of the base is vertically and fixedly connected with a fixing plate, the side wall of the fixing plate is fixedly connected with an installation ring, and a chuck is arranged on the outer side of the end, away from the fixing plate, of the installation ring. A mounting frame is fixedly connected to the top of the side wall of the side, away from the mounting ring, of the fixing plate, a telescopic spray head is arranged at the bottom of the mounting frame, a movable frame is slidably connected to the top of the base, and a detection mechanism is arranged on the side wall of the movable frame. The beneficial effects of the utility model are that through the arrangement of the detection mechanism, the drill rod sleeve can be automatically detected, so that the probe is always attached to the inner wall of the sleeve when the drill rod sleeve is detected, and the detection effect is improved; by arranging the telescopic spray head, the inner wall of the sleeve can be cleaned before detection, interference of silt attached to the inner wall of the sleeve to the probe is avoided, and the detection precision is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of flaw detection equipment technology, specifically to a phased array ultrasonic flaw detection equipment for drill pipes. Background Technology

[0002] Drill pipe is a core component of drilling equipment, typically consisting of a drill bit and a sleeve. The sleeve, usually made of seamless alloy steel tubing with threads at the end, connects the drilling rig's surface equipment to the bottom-hole drilling assembly, undertaking critical functions such as transmitting torque, delivering drilling fluid, applying drilling pressure, and rotating the drill bit. During drilling, the sleeve must withstand enormous internal and external pressure, torsion, bending, and vibration. If the sleeve has defects such as microcracks or deformation, it is prone to breakage under external forces, leading to drill bit detachment and causing engineering accidents. Therefore, before using drill pipe, the sleeve needs to undergo ultrasonic testing using a probe.

[0003] For example, CN117907429B discloses a phased array ultrasonic flaw detection device for pipelines, comprising: a bracket; a mounting base disposed on the bracket; and a phased array probe mechanism, including a first phased array probe device, a second phased array probe device, and a third phased array probe device mounted on the mounting base; wherein, the axis of the first probe is perpendicular to the water surface in the first water bag, and the angle between the axis of the second probe and the water surface in the second water bag and the angle between the axis of the third probe and the water surface in the third water bag are both acute angles.

[0004] However, when using the aforementioned phased array ultrasonic flaw detection device, the user needs to continuously apply pressure to the probe so that the probe is in close contact with the side wall of the workpiece to be tested. At this time, the pressure on the probe is unstable and cannot be tightly fitted with the side wall of the workpiece, affecting the detection results. In addition, mud and sand are easily attached to the inside of the drill pipe sleeve, affecting the detection accuracy. Utility Model Content

[0005] The purpose of this invention is to address the problem that existing flaw detection equipment probes cannot fit tightly against the side wall of the sleeve under test, resulting in low detection accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A phased array ultrasonic flaw detection device for drill pipe includes a base, a fixed plate vertically fixedly connected to the top of the base, a mounting ring fixedly connected to the side wall of the fixed plate, a chuck provided on the outer side of the mounting ring away from the fixed plate, a mounting frame fixedly connected to the top of the side wall of the fixed plate away from the mounting ring, a telescopic nozzle provided at the bottom of the mounting frame, a movable frame slidably connected to the top of the base, a detection mechanism provided on the side wall of the movable frame, the detection mechanism including a rotating rod, a groove formed on the side wall of the rotating rod, a movable seat slidably connected to the groove facing the fixed plate, a probe fixedly connected to the side wall of the movable seat, a top plate fixedly connected to the side wall of the rotating rod facing the axis of the mounting ring, and a plurality of second springs provided between the top plate and the opposing side walls of the movable seat.

[0008] Furthermore, the detection mechanism also includes a second motor, which is fixedly connected to the side wall of the movable frame away from the fixed plate. The rotating shaft of the second motor is coaxially arranged with the mounting ring. The end of the rotating rod facing the top plate is fixedly connected to the rotating shaft of the second motor. The rotating rod is perpendicular to the rotating shaft of the second motor.

[0009] Furthermore, a first motor is fixedly connected to the top edge of the base away from the fixed plate. A lead screw is fixedly connected to the shaft of the first motor. The lead screw is parallel to the shaft of the second motor. The other end of the lead screw passes through the movable frame and is rotatably connected to the fixed plate. The movable frame is threadedly connected to the lead screw.

[0010] Furthermore, the side wall of the fixing plate is provided with a through hole, which is coaxially arranged with the mounting ring.

[0011] Furthermore, the telescopic nozzle includes an outer sleeve, which is fixedly connected to the bottom of the side wall of the mounting bracket. An inner flow tube is slidably connected to the side of the outer sleeve facing the fixed plate. A convex ring is fixedly connected to the other side wall of the inner flow tube. A nozzle is rotatably connected to the side wall of the convex ring away from the inner flow tube. A plurality of spray holes are formed on the side wall of the nozzle around the axis of the inner flow tube. The axis of the spray holes is inclined along the side facing the convex ring. A first spring is connected between the convex ring and the end of the outer sleeve facing the fixed plate. The first spring is sleeved on the outside of the inner flow tube.

[0012] Furthermore, the input end of the nozzle is connected to the output end of the inner flow pipe, the input end of the inner flow pipe is connected to the output end of the outer casing, and the input end of the outer casing is fixedly connected to a water inlet connector. The outer casing, the inner flow pipe, and the nozzle are all coaxially arranged with the through hole.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The phased array ultrasonic testing equipment for drill pipes of this utility model, by setting up a testing mechanism, can automatically test the drill pipe sleeve, so that the probe always keeps in contact with the inner wall of the sleeve when testing the drill pipe sleeve, thereby improving the detection effect.

[0015] 2. The phased array ultrasonic testing equipment for drill pipes of this utility model is equipped with a telescopic nozzle, which can clean the inner wall of the sleeve before testing, avoiding interference from mud and sand adhering to the inner wall of the sleeve to the probe, and effectively improving the detection accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a phased array ultrasonic testing and flaw detection device for drill pipes according to this utility model;

[0017] Figure 2 This is a schematic diagram of a telescopic nozzle for a phased array ultrasonic testing and flaw detection device for drill pipes according to this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the telescopic nozzle of a phased array ultrasonic testing and flaw detection device for drill pipes according to this utility model;

[0019] Figure 4 This is a schematic diagram of the testing mechanism of a phased array ultrasonic testing device for drill pipes according to this utility model;

[0020] Figure 5 This is an enlarged schematic diagram of point A of the phased array ultrasonic testing and flaw detection equipment for drill pipes according to this utility model;

[0021] Reference numerals: 1. Base; 2. Fixing plate; 3. Mounting ring; 4. Chuck; 5. Telescopic nozzle; 501. Outer sleeve; 502. Inner flow pipe; 503. Convex ring; 504. First spring; 505. Nozzle; 506. Water inlet connector; 6. Mounting bracket; 7. First motor; 8. Lead screw; 9. Movable frame; 10. Detection mechanism; 1001. Second motor; 1002. Rotating rod; 1003. Top plate; 1004. Slide groove; 1005. Movable seat; 1006. Probe; 1007. Second spring; 11. Through hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0023] refer to Figure 1 and Figure 4-5The drill pipe phased array ultrasonic flaw detection device of this embodiment includes a base 1, a fixing plate 2 vertically fixedly connected to the top of the base 1, a mounting ring 3 fixedly connected to the side wall of the fixing plate 2, a chuck 4 provided on the outer side of the mounting ring 3 away from the fixing plate 2 for clamping and fixing the drill sleeve, a mounting frame 6 fixedly connected to the top of the side wall of the fixing plate 2 away from the mounting ring 3, a telescopic nozzle 5 provided at the bottom of the mounting frame 6 for cleaning the drill pipe sleeve, a movable frame 9 slidably connected to the top of the base 1, a detection mechanism 10 provided on the side wall of the movable frame 9 for flaw detection of the drill pipe sleeve, the detection mechanism 10 includes a rotating rod 1002, a sliding groove 1004 opened on the side wall of the rotating rod 1002, a movable seat 1005 slidably connected to the side of the sliding groove 1004 facing the fixing plate 2, a probe 1006 fixedly connected to the side wall of the movable seat 1005, and the rotating rod 1002... A top plate 1003 is fixedly connected to one side wall of the mounting ring 3 facing the axis of the 2. Several second springs 1007 are provided between the top plate 1003 and the opposing side wall of the movable seat 1005. The detection mechanism 10 also includes a second motor 1001, which is fixedly connected to the side wall of the movable frame 9 away from the fixed plate 2. The shaft of the second motor 1001 is coaxial with the mounting ring 3. The end of the rotating rod 1002 facing the top plate 1002 is fixedly connected to the shaft of the second motor 1001. The rotating rod 1002 is perpendicular to the shaft of the second motor 1001. A first motor 7 is fixedly connected to the top edge of the base 1 away from the fixed plate 2. A lead screw 8 is fixedly connected to the shaft of the first motor 7. The lead screw 8 is parallel to the shaft of the second motor 1001. The other end of the lead screw 8 passes through the movable frame 9 and is rotatably connected to the fixed plate 2. The movable frame 9 is threadedly connected to the lead screw 8. During testing, the cylindrical drill pipe sleeve is clamped and fixed by the chuck 4, and then the inner wall of the sleeve is cleaned by the telescopic nozzle 5. After cleaning, the first motor 7 drives the lead screw 8 to rotate, causing the movable frame 9, which is threaded to the lead screw 8, to move towards the chuck 4 until the probe 1006 moves to the outside of the sleeve and stops. At this time, the movable seat 1005 and the probe 1006 slide along the slide groove 1004 towards the top plate 1003, causing the second spring 1007 to compress and generate elastic force on the movable seat 1005 until the probe 1006 moves to a position where it can be inserted into the inside of the sleeve and stops. At this point, the movable frame 9 starts moving again towards the chuck 4, causing the probe 1006 to insert into the sleeve until it stops at the detection position. Then, the movable seat 1005 is released, allowing the probe 1006 to remain in contact with the inner wall of the sleeve under the elastic force of the second spring 1007. Finally, the second motor 1001 drives the rotating rod 1002 to start rotating, causing the probe 1006 to move along the inner wall of the sleeve to detect flaws. This ensures that the probe 1006 remains in contact with the inner wall of the sleeve during the detection of the drill pipe sleeve, improving the detection effect.

[0024] refer to Figure 2-3 The side wall of the fixing plate 2 has a through hole 11, which is coaxially arranged with the mounting ring 3. The telescopic nozzle 5 includes an outer sleeve 501, which is fixedly connected to the bottom of the side wall of the mounting bracket 6. An inner flow pipe 502 is slidably connected to the side of the outer sleeve 501 facing the fixing plate 2. A convex ring 503 is fixedly connected to the other side wall of the inner flow pipe 502. A nozzle 505 is rotatably connected to the side wall of the convex ring 503 away from the inner flow pipe 502. Several spray holes are opened on the side wall of the nozzle 505 around the axis of the inner flow pipe 502. The axis of the nozzle is inclined along the side facing the convex ring 503. A first spring 504 is connected between the convex ring 503 and the end of the outer tube 501 facing the fixing plate 2. The first spring 504 is sleeved on the outside of the inner flow tube 502. The input end of the nozzle 505 is connected to the output end of the inner flow tube 502. The input end of the inner flow tube 502 is connected to the output end of the outer tube 501. The input end of the outer tube 501 is fixedly connected to the water inlet connector 506. The outer tube 501, the inner flow tube 502 and the nozzle 505 are all coaxially arranged with the through hole 11. During cleaning, high-pressure water is introduced into the outer casing 501 through the water inlet connector 506. The water flows along the outer casing 501 into the inner flow pipe 502. At this time, the inner flow pipe 502 extends out of the outer casing 501 under water pressure, causing the nozzle 505 and the convex ring 503 at the other end of the inner flow pipe 502 to extend into the drill pipe sleeve through the through hole 11. When the convex ring 503 moves, the first spring 504 extends, generating a pulling force on the convex ring 503. When the inner flow pipe 502 extends, the water flows along the nozzle 505. The spray nozzles on the side wall clean the inner wall of the sleeve. When the water is sprayed out, it drives the nozzle 505 to rotate around the axis of the inner flow pipe 502, thereby achieving all-round cleaning of the inner wall of the sleeve. After cleaning, the water flow is stopped, and the inner flow pipe 502 and the nozzle 505 are reset under the pulling force of the first spring 504. Through the above steps, the inner wall of the sleeve can be cleaned before detection, avoiding the interference of mud and sand attached to the inner wall of the sleeve to the probe, and effectively improving the detection accuracy.

[0025] Working principle:

[0026] Before detection, the cylindrical drill pipe sleeve is clamped and fixed to the outer wall by chuck 4, and then the inner wall of the sleeve is cleaned by telescopic nozzle 5. During cleaning, high-pressure water is introduced into the inner wall of the outer sleeve 501 through water inlet connector 506. The water flows along the outer sleeve 501 into the inner flow pipe 502. At this time, the inner flow pipe 502 extends out of the outer sleeve 501 under water pressure and moves relative to the outer sleeve 501 toward chuck 4, so that the nozzle 505 and the convex ring 503 at the other end of the inner flow pipe 502 move along the through hole 11. When the convex ring 503 moves inside the drill pipe sleeve, the first spring 504 extends, generating a pulling force on the convex ring 503. When the inner flow pipe 502 extends, the water flow is sprayed out along the nozzle on the side wall of the nozzle 505 to clean the inner wall of the sleeve. When the water flow is sprayed out, it drives the nozzle 505 to start rotating around the axis of the inner flow pipe 502, thereby achieving all-round cleaning of the inner wall of the sleeve. After cleaning is completed, the water flow is stopped, so that the inner flow pipe 502 and the nozzle 505 are reset under the pulling force of the first spring 504.

[0027] During detection, the first motor 7 drives the lead screw 8 to rotate, causing the movable frame 9, which is threadedly connected to the lead screw 8, to move towards the chuck 4 until the probe 1006 moves to the outside of the sleeve and stops. At this point, the movable seat 1005 and the probe 1006 slide along the slide groove 1004 towards the top plate 1003, causing the second spring 1007 to compress and generate elastic force on the movable seat 1005 until the probe 1006 moves to a position where it can be inserted into the sleeve and stops. At this point, the movable frame 9 starts moving towards the chuck 4 again, carrying... The movable probe 1006 is inserted into the sleeve until it stops at the detection position. Then, the movable seat 1005 is released, so that the probe 1006 remains in contact with the inner wall of the sleeve under the elastic force of the second spring 1007. Finally, the second motor 1001 drives the rotating rod 1002 to start rotating, so that the probe 1006 starts to move along the inner wall of the sleeve to detect flaws on the inner wall of the sleeve. This ensures that the probe 1006 always remains in contact with the inner wall of the sleeve when detecting the drill pipe sleeve, thus improving the detection effect.

[0028] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. A phased array ultrasonic testing device for drill pipes, characterized in that: The system includes a base (1), a fixing plate (2) vertically fixed to the top of the base (1), a mounting ring (3) fixedly connected to the side wall of the fixing plate (2), a chuck (4) provided on the outer side of the mounting ring (3) away from the fixing plate (2), a mounting bracket (6) fixedly connected to the top of the side wall of the fixing plate (2) away from the mounting ring (3), a telescopic nozzle (5) provided at the bottom of the mounting bracket (6), a movable frame (9) slidably connected to the top of the base (1), and a detection mechanism (10) provided on the side wall of the movable frame (9). The mechanism (10) includes a rotating rod (1002), the side wall of which is provided with a sliding groove (1004), a movable seat (1005) is slidably connected to the side of the sliding groove (1004) facing the fixed plate (2), a probe (1006) is fixedly connected to the side wall of the movable seat (1005), a top plate (1003) is fixedly connected to the side wall of the rotating rod (1002) facing the axis of the mounting ring (3), and a plurality of second springs (1007) are provided between the opposing side walls of the top plate (1003) and the movable seat (1005).

2. The phased array ultrasonic testing equipment for drill pipes according to claim 1, characterized in that: The detection mechanism (10) also includes a second motor (1001), which is fixedly connected to the side wall of the movable frame (9) away from the fixed plate (2). The rotating shaft of the second motor (1001) is coaxially arranged with the mounting ring (3). The end of the rotating rod (1002) facing the top plate (1003) is fixedly connected to the rotating shaft of the second motor (1001). The rotating rod (1002) is perpendicular to the rotating shaft of the second motor (1001).

3. The phased array ultrasonic testing equipment for drill pipes according to claim 2, characterized in that: A first motor (7) is fixedly connected to the top edge of the base (1) away from the fixed plate (2). A lead screw (8) is fixedly connected to the shaft of the first motor (7). The lead screw (8) is parallel to the shaft of the second motor (1001). The other end of the lead screw (8) passes through the movable frame (9) and is rotatably connected to the fixed plate (2). The movable frame (9) is threadedly connected to the lead screw (8).

4. The phased array ultrasonic testing equipment for drill pipes according to claim 1, characterized in that: The side wall of the fixing plate (2) is provided with a through hole (11), and the through hole (11) is coaxially arranged with the mounting ring (3).

5. The phased array ultrasonic testing equipment for drill pipes according to claim 4, characterized in that: The telescopic nozzle (5) includes an outer tube (501), which is fixedly connected to the bottom of the side wall of the mounting bracket (6). An inner flow tube (502) is slidably connected to the side of the outer tube (501) facing the fixing plate (2). A convex ring (503) is fixedly connected to the other side wall of the inner flow tube (502). A nozzle (505) is rotatably connected to the side wall of the convex ring (503) away from the inner flow tube (502). A plurality of spray holes are opened on the side wall of the nozzle (505) around the axis of the inner flow tube (502). The axis of the spray holes is inclined along the side facing the convex ring (503). A first spring (504) is connected between the convex ring (503) and the end of the outer tube (501) facing the fixing plate (2). The first spring (504) is sleeved on the outside of the inner flow tube (502).

6. The phased array ultrasonic testing equipment for drill pipes according to claim 5, characterized in that: The input end of the nozzle (505) is connected to the output end of the inner flow pipe (502), the input end of the inner flow pipe (502) is connected to the output end of the outer sleeve (501), and the input end of the outer sleeve (501) is fixedly connected to a water inlet connector (506). The outer sleeve (501), the inner flow pipe (502) and the nozzle (505) are all coaxially arranged with the through hole (11).

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