A device for detecting defects in a steel pipe

Abstract

The utility model discloses a kind of steel pipe comprehensive flaw detection devices, specifically related to steel pipe flaw detection equipment technical field, including base and the support frame of being arranged at base top surface, the top surface side of base is fixedly installed with electric slide rail, and the top surface of the sliding block of electric slide rail is fixedly installed with fixed frame, the inner top surface of fixed frame is fixedly installed with first ultrasonic flaw detector for steel pipe flaw detection.The utility model said a kind of steel pipe comprehensive flaw detection device, in actual work, the steel pipe to be detected is placed in the outer surface of two rotating rollers, the sliding block of electric slide rail drives fixed frame to move, first ultrasonic flaw detector can be moved, and then the outer wall of steel pipe is detected, and multi-stage electric push rod can push fixed block and second ultrasonic flaw detector to steel pipe inner wall, multiple ball head can make fixed block move in the inner wall of steel pipe, and then the inner wall of steel pipe is detected, so as to be convenient for the comprehensive flaw detection of the steel pipe of wall thickness thicker.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe flaw detection equipment, and in particular to a comprehensive steel pipe flaw detection device. Background Technology

[0002] Due to various uncertainties in the manufacturing process, such as metal fatigue, welding defects, internal and external corrosion, steel pipes may have potential defects and safety hazards. In order to ensure safety and reliability during use, steel pipes need to be inspected regularly with flaw detection equipment to eliminate potential safety hazards in the steel pipes in a timely manner and ensure production safety.

[0003] A search revealed, for example, a utility model with publication number CN215066352U, which discloses a flaw detection device for seamless steel pipes. The device includes a base and a cover. A hydraulic top is installed inside the cover and is bolted to the cover. A pressure plate is installed below the hydraulic top and bolted to the hydraulic top. This utility model uses an ultrasonic flaw detector to detect flaws in the steel pipe. However, the ultrasonic flaw detector is located outside the steel pipe. Since ultrasonic waves attenuate when propagating through metal, the greater the wall thickness, the more difficult it is to penetrate, making it inconvenient to perform comprehensive flaw detection on some thick-walled steel pipes. Therefore, to overcome these shortcomings, the inventors propose a comprehensive flaw detection device for steel pipes. Utility Model Content

[0004] The main purpose of this utility model is to provide a comprehensive flaw detection device for steel pipes, which can effectively solve the problem that existing flaw detection devices are not convenient for comprehensive flaw detection of some steel pipes with thick walls.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A comprehensive flaw detection device for steel pipes includes a base and a support frame disposed on the top surface of the base. An electric slide rail is fixedly installed on one side of the top surface of the base, and a fixing frame is fixedly installed on the top surface of the slider of the electric slide rail. A first ultrasonic flaw detector for flaw detection of steel pipes is fixedly installed on the inner top surface of the fixing frame. A multi-stage electric push rod is fixedly installed on one side of the top surface of the support frame, and a connecting block is fixedly installed at the output end of the multi-stage electric push rod. A second ultrasonic flaw detector is fixedly installed at one end of the connecting block, and multiple guide components are provided on the outer surface of the connecting block.

[0007] Preferably, the guide assembly includes a telescopic sleeve fixedly installed on the outer surface of the connecting block, a spring fixedly installed inside the telescopic sleeve, and a connecting rod slidably connected inside the telescopic sleeve. The top end of the spring is fixedly connected to the bottom end of the connecting rod, and the top end of the connecting rod extends to the outside of the telescopic sleeve and is fixedly installed with a ball seat, and the ball seat has a ball head inside.

[0008] Preferably, the outer top surface of the support frame has a through hole and a fixing block is provided inside the through hole. A cylinder is fixedly installed inside the support frame and the output end of the cylinder is fixedly connected to the bottom surface of the fixing block. Two guide plates are fixedly installed on the bottom surface of the fixing block. Two guide sleeves are fixedly installed inside the support frame and the two guide plates are slidably connected to the two guide sleeves respectively.

[0009] Preferably, a fixing hole is provided on one side of the outer surface of each of the two guide sleeves, and a plurality of equally spaced adjustment holes are provided on one side of each of the two guide plates.

[0010] Preferably, the fixed block has two movable blocks slidably connected inside. A threaded rod is rotatably connected to one side of the fixed block, and the outer surface of the threaded rod is provided with two opposite threads. Both movable blocks are threadedly connected to the threaded rod. A hidden groove is opened on one side of the outer surface of the fixed block, and a handle is fixedly installed at one end of the threaded rod that extends into the hidden groove.

[0011] Preferably, a mounting bracket is fixedly installed on the top surface of both movable blocks, and a motor is fixedly installed on one side of the outer surface of one of the mounting brackets. Rotating rollers are rotatably connected inside both mounting brackets, and rubber sleeves are fitted on the outer surface of both rotating rollers. The output shaft of the motor is fixedly connected to one of the rotating rollers.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model discloses a comprehensive flaw detection device for steel pipes. By setting up a support frame, in actual operation, the steel pipe to be inspected is placed on the outer surface of two rotating rollers. The slider of the electric slide rail drives the fixed frame to move, which allows the first ultrasonic flaw detector to move and thus inspect the outer wall of the steel pipe. The multi-stage electric push rod can push the fixed block and the second ultrasonic flaw detector to the inner wall of the steel pipe. Multiple ball heads can make the fixed block move on the inner wall of the steel pipe, thus inspecting the inner wall of the steel pipe. This facilitates comprehensive flaw detection of steel pipes with thick walls. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a rear view schematic diagram of the support frame structure of this utility model;

[0016] Figure 3 For the present utility model Figure 2 Enlarged view of section A in the middle;

[0017] Figure 4 This is a schematic diagram of the connecting block structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the support frame structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the fixing block structure of this utility model;

[0020] Figure 7 For the present utility model Figure 6 Enlarged view of section B in the middle.

[0021] In the diagram: 1. Support frame; 2. First ultrasonic flaw detector; 3. Fixing frame; 4. Electric slide rail; 5. Multi-stage electric push rod; 6. Base; 501. Connecting block; 502. Second ultrasonic flaw detector; 503. Telescopic sleeve; 504. Spring; 505. Connecting rod; 506. Ball seat; 507. Ball head; 101. Through hole; 102. Fixing block; 103. Guide sleeve; 104. Guide plate; 105. Adjustment hole; 106. Fixing hole; 107. Cylinder; 1021. Threaded rod; 1022. Movable block; 1023. Mounting frame; 1024. Motor; 1025. Rotating roller; 1026. Rubber sleeve; 1031. Hidden groove; 1032. Rotating handle. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] This utility model discloses a comprehensive flaw detection device for steel pipes, such as... Figure 1-7 As shown, the system includes a base 6 and a support frame 1 on the top surface of the base 6. An electric slide rail 4 is fixedly installed on one side of the top surface of the base 6, and a fixing frame 3 is fixedly installed on the top surface of the slider of the electric slide rail 4. The electric slide rail 4 is powered by an external power source. When the electric slide rail 4 is powered on, the user sends a movement command through a remote control, APP, or smart home system. The main control unit converts the command into the speed and direction signals of the motor 1024. For example, the stepper motor 1024 needs to calculate the number of pulses for positioning. The motor 1024 of the electric slide rail 4 starts, and the motor 1024 rotates the screw, causing the slider to move linearly along the axial direction. The encoder monitors the position of the slider. If a deviation is detected, the main control unit automatically adjusts the output of the motor 1024 to ensure accurate positioning. After reaching the target position, the motor 1024 stops and activates the electromagnetic brake or mechanical lock to prevent displacement caused by external force, thereby allowing the fixing frame 3 to move along the electric slide rail 4.

[0024] A first ultrasonic flaw detector 2 for inspecting steel pipes is fixedly installed on the inner top surface of the mounting bracket 3. After the first ultrasonic flaw detector 2 is activated, the probe emits ultrasonic pulses towards the steel pipe to be inspected. When the ultrasonic wave encounters a defect, part of the wave will be reflected back and captured by the same probe or another receiving probe. By measuring the time difference between the ultrasonic wave from emission to reception and combining it with the propagation speed of the ultrasonic wave in the material, the location of the defect can be calculated, and thus the steel pipe can be inspected. Since the ultrasonic flaw detector is existing technology, it will not be described in detail here.

[0025] A multi-stage electric push rod 5 is fixedly installed on one side of the top surface of the support frame 1. The multi-stage electric push rod 5 is powered by an external power source. When it is powered on, the motor 1024 of the multi-stage electric push rod 5 starts and drives the first-stage screw to rotate. The nut drives the first-stage push rod to extend. When the first stage is fully extended, the second stage starts to work. The motor 1024 continues to drive the second-stage push rod to extend. The total stroke is the sum of the strokes of each stage. The operation is reversed. First, the last stage is retracted, and then each stage is retracted one by one.

[0026] Furthermore, a connecting block 501 is fixedly installed at the output end of the multi-stage electric actuator 5. A second ultrasonic flaw detector 502 is fixedly installed at one end of the connecting block 501. The multi-stage electric actuator 5 can push the fixed block 102 and the second ultrasonic flaw detector 502 to the inner wall of the steel pipe, thereby enabling the second ultrasonic flaw detector 502 to perform flaw detection on the inner wall of the thick-walled steel pipe. In conjunction with the first ultrasonic flaw detector 2, it can perform comprehensive flaw detection on the thick-walled steel pipe.

[0027] A telescopic sleeve 503 is fixedly installed on the outer surface of the connecting block 501. A spring 504 is fixedly installed inside the telescopic sleeve 503, and a connecting rod 505 is slidably connected inside the telescopic sleeve 503. The top end of the spring 504 is fixedly connected to the bottom end of the connecting rod 505. When the connecting rod 505 moves towards the inside of the telescopic sleeve 503, it will compress the spring 504. The top end of the connecting rod 505 extends to the outside of the telescopic sleeve 503 and is fixedly installed with a ball seat 506. The ball seat 506 has a ball head 507 inside. When the connecting block 501 is inserted into the steel pipe, the spring 504 will cause the ball head 507 to contact the inner wall of the steel pipe. When the multi-stage electric push rod 5 pushes the connecting block 501 to move inside the steel pipe, the ball head 507 will roll and contact the inner wall of the steel pipe. Through the elasticity of the spring 504, the ball head 507 can roll inside steel pipes of different radii.

[0028] The outer top surface of the support frame 1 has a through hole 101 and a fixing block 102 is provided inside the through hole 101. The fixing block 102 can pass through the through hole 101 and rise to the top surface of the support frame 1 or descend to the interior of the support frame 1.

[0029] A cylinder 107 is fixedly installed inside the support frame 1, and the output end of the cylinder 107 is fixedly connected to the bottom surface of the fixed block 102. The cylinder 107 can push the fixed block 102 to move up and down. Two guide plates 104 are fixedly installed on the bottom surface of the fixed block 102. Two guide sleeves 103 are fixedly installed inside the support frame 1. The two guide plates 104 are respectively inserted into the two guide sleeves 103, and the two guide plates 104 are slidably connected to the two guide sleeves 103. When the cylinder 107 pushes the fixed block 102 to move up and down, it will drive the guide plates 104 to move up and down inside the guide sleeves 103. The two guide plates 104 and the two guide sleeves 103 can guide the movement of the fixed block 102.

[0030] Each of the two guide sleeves 103 has a fixing hole 106 on one side of its outer surface, and each of the two guide plates 104 has a plurality of equally spaced adjustment holes 105 on one side. When the fixing block 102 drives the guide plate 104 to rise and fall inside the guide sleeve 103, the plurality of adjustment holes 105 will overlap with the fixing hole 106 in sequence. By inserting the bolt into the overlapping fixing hole 106 and adjustment hole 105, the guide plate 104 can be fixed, thereby preventing the fixing block 102 from continuing to rise and fall, and thus fixing the raised and lowered fixing block 102.

[0031] The fixed block 102 has two movable blocks 1022 slidably connected inside. A threaded rod 1021 is rotatably connected to one side of the fixed block 102, and the outer surface of the threaded rod 1021 is provided with two opposite threads. Both movable blocks 1022 are threadedly connected to the threaded rod 1021. When the threaded rod 1021 rotates, the two movable blocks 1022 will move in opposite directions to adjust the distance between the two movable blocks 1022.

[0032] A hidden groove 1031 is provided on one side of the outer surface of the fixing block 102, and a handle 1032 is fixedly installed at one end of the threaded rod 1021 that extends into the hidden groove 1031. When the operator manually rotates the handle 1032, the threaded rod 1021 can be rotated. The hidden groove 1031 can prevent the fixing block 102 from being affected by the handle 1032 when it moves up and down from the inside of the through hole 101.

[0033] Mounting brackets 1023 are fixedly installed on the top surface of both movable blocks 1022. When the two movable blocks 1022 move in opposite directions, the distance between the two mounting brackets 1023 can be adjusted.

[0034] A motor 1024 is fixedly installed on one side of the outer surface of one of the mounting brackets 1023. Rotating rollers 1025 are rotatably connected inside both mounting brackets 1023, and rubber sleeves 1026 are fitted on the outer surface of both rotating rollers 1025. The output shaft of the motor 1024 is fixedly connected to one of the rotating rollers 1025. When the steel pipe is placed on the outer surface of the two rotating rollers 1025, the motor 1024 drives one of the rotating rollers 1025 to rotate, thereby making the steel pipe rotate.

[0035] The working principle of this utility model is as follows: First, the operator manually rotates the handle 1032, which drives the threaded rod 1021 to rotate. When the threaded rod 1021 rotates, the two movable blocks 1022 will move in opposite directions to adjust the distance between the two rotating rollers 1025. Then, the steel pipe to be inspected is placed on the outer surface of the two rotating rollers 1025, and the electric slide rail 4 is started.

[0036] The slider of the electric slide rail 4 drives the fixed frame 3 to move, which in turn moves the first ultrasonic flaw detector 2 to inspect the outer wall of the steel pipe. The motor 1024 is started, which drives one of the rotating rollers 1025 to rotate, which makes the steel pipe rotate so that the outer surface of the steel pipe can be inspected. Then, the multi-stage electric push rod 5 is started, which can push the fixed block 102 and the second ultrasonic flaw detector 502 to the inner wall of the steel pipe. The second ultrasonic flaw detector 502 can then inspect the inner wall of the thick-walled steel pipe. Through the first ultrasonic flaw detector 2 and the second ultrasonic flaw detector 502, it is convenient to carry out comprehensive flaw inspection of the thick-walled steel pipe.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A comprehensive flaw detection device for steel pipes, comprising a base (6) and a support frame (1) disposed on the top surface of the base (6), characterized in that: An electric slide rail (4) is fixedly installed on one side of the top surface of the base (6), and a fixed frame (3) is fixedly installed on the top surface of the slider of the electric slide rail (4). A first ultrasonic flaw detector (2) for detecting flaws in steel pipes is fixedly installed on the inner top surface of the fixed frame (3). A multi-stage electric push rod (5) is fixedly installed on one side of the top surface of the support frame (1), and a connecting block (501) is fixedly installed at the output end of the multi-stage electric push rod (5). A second ultrasonic flaw detector (502) is fixedly installed at one end of the connecting block (501), and multiple guide components are provided on the outer surface of the connecting block (501).

2. The steel pipe comprehensive flaw detection device according to claim 1, characterized in that: The guide assembly includes a telescopic sleeve (503) fixedly installed on the outer surface of the connecting block (501). A spring (504) is fixedly installed inside the telescopic sleeve (503), and a connecting rod (505) is slidably connected inside the telescopic sleeve (503). The top end of the spring (504) is fixedly connected to the bottom end of the connecting rod (505). The top end of the connecting rod (505) extends to the outside of the telescopic sleeve (503) and is fixedly installed with a ball seat (506). A ball head (507) is provided inside the ball seat (506).

3. The steel pipe comprehensive flaw detection device according to claim 1, characterized in that: The support frame (1) has a through hole (101) on its outer top surface and a fixing block (102) inside the through hole (101). A cylinder (107) is fixedly installed inside the support frame (1) and the output end of the cylinder (107) is fixedly connected to the bottom surface of the fixing block (102). Two guide plates (104) are fixedly installed on the bottom surface of the fixing block (102). Two guide sleeves (103) are fixedly installed inside the support frame (1) and the two guide plates (104) are slidably connected to the two guide sleeves (103) respectively.

4. The steel pipe comprehensive flaw detection device according to claim 3, characterized in that: Each of the two guide sleeves (103) has a fixing hole (106) on one side of its outer surface, and each of the two guide plates (104) has a plurality of equally spaced adjustment holes (105) on one side.

5. A comprehensive flaw detection device for steel pipes according to claim 3, characterized in that: The fixed block (102) has two movable blocks (1022) slidably connected inside. A threaded rod (1021) is rotatably connected to one side of the fixed block (102), and the outer surface of the threaded rod (1021) is provided with two opposite threads. Both movable blocks (1022) are threadedly connected to the threaded rod (1021). A hidden groove (1031) is opened on one side of the outer surface of the fixed block (102), and a handle (1032) is fixedly installed at one end of the threaded rod (1021) that extends into the hidden groove (1031).

6. A comprehensive flaw detection device for steel pipes according to claim 5, characterized in that: A mounting bracket (1023) is fixedly installed on the top surface of each of the two movable blocks (1022), and a motor (1024) is fixedly installed on one side of the outer surface of one of the mounting brackets (1023). A rotating roller (1025) is rotatably connected inside each of the two mounting brackets (1023), and a rubber sleeve (1026) is fitted on the outer surface of each of the two rotating rollers (1025). The output shaft of the motor (1024) is fixedly connected to one of the rotating rollers (1025).

Images