An ultrasonic nondestructive detection mechanism for the inner and outer walls of stainless steel pipes

Abstract

The present invention discloses an ultrasonic nondestructive detection mechanism for the inner and outer walls of a stainless steel pipe, comprising: a detection base, a pipe assembly, a conveying wheel group and a detection assembly, the surface of the detection base is provided with a driving roller for driving the pipe assembly to rotate, the number of conveying wheel groups is several and evenly distributed on the inner side of the pipe assembly in the circumferential direction, the detection assembly is fixedly installed on one side of the pipe assembly, the conveying wheel group comprises a positioning strip, a wheel seat, an omnidirectional wheel and a first adjusting rod fixed on the surface of the positioning strip, and the output end of the first adjusting rod is fixedly connected with a slider. In the present invention, by setting the pipe assembly and the conveying wheel group structure, the stainless steel pipe to be detected is clamped and conveyed by multiple conveying wheel groups inside the pipe assembly, so that the stainless steel pipe is accurately positioned and conveyed at a uniform speed, and the omnidirectional wheel is made to fit the outer wall of the stainless steel pipe under the adjustment of the first adjusting rod, and is adapted to pipe structures of different specifications and diameters, thereby improving the detection effect of the inner and outer walls of the stainless steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel pipe detection, in particular to an ultrasonic nondestructive detection mechanism for inner and outer pipe walls of a stainless steel pipe. Background Art

[0002] In the production and use of stainless steel pipelines, quality inspection is a key link to ensure the safety and reliability of pipelines. Traditional transmission inspection structures often face many challenges in practical applications.

[0003] Traditional conveying detection structures often rely on transmission devices such as mechanical rollers or conveyor belts when conveying stainless steel pipes. However, these devices are easily affected by factors such as conveying inertia, uneven friction, and material surface characteristics during operation, resulting in discontinuities such as slipping and setbacks during the conveying process. This discontinuous conveying will directly affect the detection effect of the ultrasonic detector, because the emission and reception of ultrasonic waves require a stable conveying speed and precise positioning. Setbacks and slippage during the conveying process will cause the interruption or overlap of the ultrasonic detection signal, which will in turn cause the quality of the detection image to decrease and fail to accurately reflect the actual condition inside the pipeline. In ultrasonic non-destructive testing, the layout and arrangement of the detectors are also important factors affecting the detection effect. Traditional methods often use single or multiple detectors arranged along the circumferential direction of the outer wall of the stainless steel pipe. However, this arrangement has obvious limitations. First, due to the layout direction and arrangement problems between the detectors, it is often difficult to ensure that the detection signal is fully covered on the pipeline surface. Especially when there are gaps between adjacent detectors, these gap areas are prone to become detection blind areas, resulting in the inability to effectively detect potential defects. Secondly, the detection range and accuracy of a single detector are limited, and the detection effect for complex-shaped pipes or tiny defects may not be satisfactory.

[0004] In view of this, research and improvement are carried out on the existing problems, and an ultrasonic non-destructive detection mechanism for the inner and outer walls of stainless steel pipes is provided to solve the current problems. The purpose is to solve the problems and improve the practical value through this technology. Summary of the invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted by the present invention is: an ultrasonic non-destructive detection mechanism for the inner and outer walls of a stainless steel pipe, comprising: a detection base, a pipe assembly, a conveying wheel group and a detection assembly, the surface of the detection base is provided with a driving roller for driving the pipe assembly to rotate, the number of the conveying wheel groups is several and is evenly distributed on the inner side of the pipe assembly in the circumferential direction, the detection assembly is fixedly installed on one side of the pipe assembly, the conveying wheel group includes a positioning strip, a wheel seat, an omnidirectional wheel and a first adjusting rod fixed to the surface of the positioning strip, the output end of the first adjusting rod is fixedly connected with a slider, the slider is slidably installed on the surface of the positioning strip and spring connecting rods movably connected to the surface of the wheel seat are provided on both sides, the omnidirectional wheel is rotatably installed on the surface of the wheel seat, and the surface of the wheel seat is provided with a connecting rod movably connected to the surface of the positioning strip;

[0007] The detection assembly includes a fixed plate, a scissors-type connecting rod, an ultrasonic detector and a second adjusting rod. The surface of the fixed plate is provided with a plurality of sliding sleeves arranged one-to-one corresponding to the second adjusting rod. A guide rod is slidably installed on the inner side of the sliding sleeve. One end of the second adjusting rod is slidably sleeved on the inner side of the guide rod. The two ends of the scissors-type connecting rod are respectively movably connected to one end of the fixed plate and the second adjusting rod. The ultrasonic detector is slidably installed on the surface of the second adjusting rod. The surface of the scissors-type connecting rod is provided with a linkage plate.

[0008] In a preferred example, the present invention can be further configured as follows: the pipe assembly includes a clamp seat and a clamp fixed to one side of the clamp seat, the clamp seat is a two-petal structure and is connected to each other, the surface of the clamp seat is provided with a swivel that abuts against the surface of the driving roller, the two clamp seats are combined by the clamp, and the swivel rings on the outer periphery of the clamp seat are combined to form a complete ring that abuts against the surface of the driving roller to realize the rolling drive of the pipe assembly.

[0009] In a preferred example, the present invention can be further configured as follows: the clamp is a multi-petal clamp structure, and the clamp is coaxially arranged with the clamp seat.

[0010] In a preferred example, the present invention can be further configured as follows: the number of the connecting rods is four and they are evenly divided into two groups, and the two connecting rods are arranged parallel to each other, and each group of connecting rods is symmetrically arranged on both sides of the wheel seat, and the slider is driven by the first adjusting rod to slide on the surface of the positioning bar, so that the spring connecting rod links the wheel seat to perform a deflection movement, and the deflection of multiple connecting rods forms a deflection movement of the wheel seat, thereby adjusting the abutment contact effect between the wheel seat and the omnidirectional wheel and the surface of the stainless steel pipe at the axis.

[0011] In a preferred example, the present invention can be further configured as follows: the wheel seat is a Meckner mother wheel structure and is arranged parallel to the axis of the pipe assembly, and a motor for driving the omnidirectional wheel to rotate is fixedly installed on one side of the wheel seat.

[0012] In a preferred example, the present invention can be further configured as follows: the ultrasonic detector is an arc-shaped plate structure, and the ultrasonic detector is used to perform ultrasonic detection on the inner and outer walls of the stainless steel pipe.

[0013] In a preferred example, the present invention can be further configured as follows: the scissor-type connecting rod includes a plurality of movable connecting rods, and the plurality of movable connecting rods are evenly divided into a plurality of groups in pairs, each group of movable connecting rods rotates in an X shape, and each group of movable connecting rods is connected and arranged in sequence.

[0014] In a preferred example, the present invention can be further configured as follows: a plurality of the scissor-type links are arranged in sequence in a circular direction and interconnected to form a ring; the linkage plate is movably mounted on the surface of the scissor-type links; the second adjusting rod is an electric push rod structure; under the guidance of each scissor-type link and under the telescopic drive of the second adjusting rod, the ultrasonic detector and the second adjusting rod are moved along the radial direction of the fixed disk, so that the ultrasonic detector moves radially to adjust and adapt to the specifications of different stainless steel pipes.

[0015] The beneficial effects achieved by the present invention are:

[0016] 1. In the present invention, by setting a pipe conveying assembly and a conveying wheel group structure, a plurality of conveying wheel groups are used inside the pipe conveying assembly to clamp and convey the stainless steel pipe to be detected, so that the stainless steel pipe can be accurately positioned and conveyed at a uniform speed, and under the adjustment of the first adjustment rod, the omnidirectional wheel is made to fit the outer wall of the stainless steel pipe, adapting to pipe body structures of different specifications and diameters, thereby improving the detection effect of the inner and outer walls of the stainless steel pipe.

[0017] 2. In the present invention, an omnidirectional wheel structure is adopted, and the pipe conveying component can be driven to roll on the surface of the detection base through a driving roller, and the detection component is simultaneously driven to roll on the surface of the stainless steel pipe to achieve comprehensive detection of the inner and outer walls of the stainless steel pipe.

[0018] 3. In the present invention, the scissor-type connecting rod on the surface of the fixed disk can be driven by the second adjusting rod to perform deformation movement, so that the ultrasonic detector and the second adjusting rod can perform radial relative movement, which can effectively adjust the radial spacing of multiple ultrasonic detectors and adapt to the ultrasonic detection of the inner and outer walls of stainless steel pipes with different specifications and diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of a pipe assembly and a detection assembly according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the clamping seat and clamping hoop structure of an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of a conveying wheel group according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the wheel seat and omnidirectional wheel structure of an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the decomposition structure of a detection component according to an embodiment of the present invention;

[0025] Figure 7 The figure is a schematic diagram of the structure of a detection component according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 100, detection base; 110, driving roller;

[0028] 200, pipe assembly; 210, clamp seat; 220, clamp; 211, swivel;

[0029] 300, conveying wheel set; 310, positioning bar; 320, wheel seat; 330, omnidirectional wheel; 340, first adjustment rod; 321, motor; 322, connecting rod; 341, slider; 342, spring connecting rod;

[0030] 400, detection assembly; 410, fixing plate; 420, scissor-type connecting rod; 430, ultrasonic detector; 440, second adjusting rod; 411, sliding sleeve; 412, guide rod; 421, linkage plate. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0032] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0033] An ultrasonic nondestructive detection mechanism for inner and outer walls of a stainless steel pipe provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0034] Combination Figure 1-Figure 7As shown, an ultrasonic nondestructive detection mechanism for the inner and outer walls of a stainless steel pipe provided by the present invention comprises: a detection base 100, a pipe assembly 200, a conveying wheel group 300 and a detection assembly 400. A driving roller 110 for driving the pipe assembly 200 to rotate is provided on the surface of the detection base 100. The number of the conveying wheel groups 300 is several and is evenly distributed on the inner side of the pipe assembly 200 in a circumferential direction. The detection assembly 400 is fixedly installed on one side of the pipe assembly 200. The conveying wheel group 300 comprises a positioning bar 310, a wheel seat 320, an omnidirectional wheel 330 and a first adjusting rod 340 fixed on the surface of the positioning bar 310. A slider 341 is fixedly connected to the output end of the first adjusting rod 340. The slider 341 is slidably installed on the surface of the positioning bar 310 and spring connecting rods 342 movably connected to the surface of the wheel seat 320 are provided on both sides. The omnidirectional wheel 330 is rotatably installed on the surface of the wheel seat 320. The surface of the wheel seat 320 is provided with a connecting rod 322 movably connected to the surface of the positioning bar 310.

[0035] The detection assembly 400 includes a fixed plate 410, a scissors-type connecting rod 420, an ultrasonic detector 430 and a second adjusting rod 440. The surface of the fixed plate 410 is provided with a plurality of sliding sleeves 411 arranged one-to-one corresponding to the second adjusting rod 440. A guide rod 412 is slidably installed on the inner side of the sliding sleeve 411. One end of the second adjusting rod 440 is slidably sleeved on the inner side of the guide rod 412. The two ends of the scissors-type connecting rod 420 are respectively movably connected to the fixed plate 410 and one end of the second adjusting rod 440. The ultrasonic detector 430 is slidably installed on the surface of the second adjusting rod 440. The surface of the scissors-type connecting rod 420 is provided with a linkage plate 421.

[0036] In this embodiment, the pipe assembly 200 includes a clamp seat 210 and a clamp 220 fixed to one side of the clamp seat 210. The clamp seat 210 is a two-petal structure and is connected to each other. The surface of the clamp seat 210 is provided with a swivel 211 that abuts against the surface of the driving roller 110.

[0037] Specifically, the two clamping seats 210 are combined through the clamping hoop 220, and the outer peripheral rotating ring 211 of the clamping seat 210 is combined to form a complete ring to abut against the surface of the driving roller 110, so as to realize the rolling drive of the pipe assembly 200.

[0038] In this embodiment, the clamp 220 is a multi-petal clamp structure, and the clamp 220 is coaxially arranged with the clamp seat 210 .

[0039] In this embodiment, the number of the connecting rods 322 is four and they are evenly divided into two groups, and the two connecting rods 322 are arranged parallel to each other, and each group of connecting rods 322 is symmetrically arranged on both sides of the wheel seat 320 .

[0040] Specifically, the first adjusting rod 340 drives the slider 341 to slide on the surface of the positioning bar 310, so that the spring connecting rod 342 links the wheel seat 320 to perform a deflection movement. The deflection of multiple connecting rods 322 forms the deflection movement of the wheel seat 320, and adjusts the abutment contact effect between the wheel seat 320 and the omnidirectional wheel 330 and the surface of the stainless steel pipe at the axis.

[0041] In this embodiment, the wheel seat 320 is a Meckner mother wheel structure and is arranged parallel to the axis of the pipe assembly 200 . A motor 321 for driving the omnidirectional wheel 330 to rotate is fixedly installed on one side of the wheel seat 320 .

[0042] Specifically, the wheel seat 320 is driven to roll by the motor 321 to realize the conveying movement of the internal stainless steel pipe, and the omnidirectional wheel 330 structure is adopted. The pipe conveying component 200 can be driven to roll on the surface of the detection base 100 by the driving roller 110, and the detection component 400 can be driven to roll on the surface of the stainless steel pipe simultaneously.

[0043] In this embodiment, the ultrasonic detector 430 is an arc-shaped plate structure, and the ultrasonic detector 430 is used to perform ultrasonic detection on the inner and outer walls of the stainless steel pipe.

[0044] In this embodiment, the scissor-type connecting rod 420 includes a plurality of movable connecting rods, and the plurality of movable connecting rods are evenly divided into a plurality of groups in pairs, each group of movable connecting rods rotates in an X shape, and each group of movable connecting rods is connected and arranged in sequence.

[0045] In this embodiment, a plurality of scissor-type connecting rods 420 are sequentially arranged in a circumferential direction and interconnected to form a ring. The linkage plate 421 is movably mounted on the surface of the scissor-type connecting rods 420. The second adjustment rod 440 is an electric push rod structure.

[0046] Specifically, under the guidance of each scissor-type link 420 and under the telescopic drive of the second adjusting rod 440, the ultrasonic detector 430 and the second adjusting rod 440 move in the radial direction of the fixed plate 410, so that the ultrasonic detector 430 moves radially to adjust and adapt to the specifications of different stainless steel pipes.

[0047] The working principle and use process of the present invention:

[0048] Pipe delivery assembly 200: It is composed of a clamping seat 210 and a clamping hoop 220. The clamping seat with a two-petal structure is fastened by the clamping hoop to form an annular structure, which abuts against the driving roller 110 on the detection base 100 to realize the rolling drive of the stainless steel pipe. Conveying wheel group 300: It is evenly distributed on the inner side of the pipe delivery assembly, including a positioning strip 310, a wheel seat 320, an omnidirectional wheel 330 and a first adjustment rod 340. The omnidirectional wheel is driven by a motor 321 and can roll on the surface of the detection base. At the same time, the first adjustment rod can adjust the contact effect between the omnidirectional wheel and the surface of the steel pipe to ensure adaptability to steel pipes of different specifications, improve the contact effect, and avoid friction and slippage. Detection assembly 400: It includes a fixed plate 410, a scissor-type connecting rod 420, an ultrasonic detector 430 and a second adjustment rod 440. The ultrasonic detector is an arc-shaped plate structure, which is used to perform ultrasonic detection on the inner and outer walls of the stainless steel pipe; the scissor-fork connecting rod 420: an X-shaped structure is formed by the movable connecting rod, and under the drive of the second adjusting rod, the ultrasonic detector moves along the radial direction of the fixed plate, thereby adjusting the distance between the ultrasonic detector and the surface of the stainless steel pipe, and adapting to steel pipes of different specifications;

[0049] The stainless steel pipe to be tested is passed through the pipe conveying assembly 200, and the steel pipe is clamped by the clamp 220 and the clamp seat 210. The motor 321 in the conveying wheel group 300 is started to drive the omnidirectional wheel 330 to rotate to realize the uniform speed conveyance of the steel pipe. The ultrasonic detector 430 starts to work, emitting ultrasonic waves and receiving reflected signals. During the detection process, the ultrasonic detector continuously collects ultrasonic signals from the inner and outer walls of the steel pipe, amplifies the collected signals, adjusts the gain, etc., so as to more clearly display the internal structure and defects of the steel pipe, analyzes the waveform and data, determines whether the steel pipe has defects, and determines the location and type of the defects. According to the analysis results, a detailed test report is prepared, including the basic information of the steel pipe, the test plan, the test results, etc.

[0050] 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.

[0051] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An ultrasonic nondestructive detection mechanism for the inner and outer walls of a stainless steel pipe, characterized in that: include: A detection base (100), a pipe assembly (200), a conveying wheel assembly (300), and a detection assembly (400); a driving roller (110) for driving the pipe assembly (200) to rotate is provided on the surface of the detection base (100); a plurality of conveying wheel assemblies (300) are evenly distributed on the inner side of the pipe assembly (200) in a circumferential direction; the detection assembly (400) is fixedly mounted on one side of the pipe assembly (200); the conveying wheel assembly (300) comprises a positioning strip (310), a wheel seat (320), An omnidirectional wheel (330) and a first adjusting rod (340) fixed to the surface of the positioning strip (310), wherein the output end of the first adjusting rod (340) is fixedly connected to a slider (341), the slider (341) is slidably mounted on the surface of the positioning strip (310) and has spring connecting rods (342) movably connected to the surface of the wheel seat (320) on both sides, the omnidirectional wheel (330) is rotatably mounted on the surface of the wheel seat (320), and the surface of the wheel seat (320) is provided with a connecting rod (322) movably connected to the surface of the positioning strip (310); The detection assembly (400) comprises a fixed plate (410), a scissor-type connecting rod (420), an ultrasonic detector (430) and a second adjustment rod (440); a surface of the fixed plate (410) is provided with a plurality of sliding sleeves (411) arranged in a one-to-one correspondence with the second adjustment rod (440); a guide rod (412) is slidably mounted on the inner side of the sliding sleeve (411); one end of the second adjustment rod (440) is slidably sleeved on the inner side of the guide rod (412); two ends of the scissor-type connecting rod (420) are movably connected to the fixed plate (410) and one end of the second adjustment rod (440), respectively; The ultrasonic detector (430) is slidably mounted on the surface of the second adjustment rod (440), and a linkage plate (421) is provided on the surface of the scissor-type connecting rod (420); a plurality of the scissor-type connecting rods (420) are sequentially arranged in a circumferential direction and connected to each other to form a ring; the linkage plate (421) is movably mounted on the surface of the scissor-type connecting rod; the second adjustment rod (440) is an electric push rod structure; under the guidance of each scissor-type connecting rod (420) and under the telescopic drive of the second adjustment rod (440), the ultrasonic detector (430) and the second adjustment rod (440) are moved along the radial direction of the fixed disk (410).

2. The ultrasonic nondestructive detection mechanism for the inner and outer walls of a stainless steel pipe according to claim 1, characterized in that: The pipe assembly (200) comprises a clamping seat (210) and a clamping hoop (220) fixed to one side of the clamping seat (210); the clamping seat (210) is a two-petal structure connected to each other; a rotating ring (211) is provided on the surface of the clamping seat (210) and abuts against the surface of the driving roller (110).

3. The ultrasonic nondestructive detection mechanism for inner and outer walls of a stainless steel pipe according to claim 2, characterized in that: The clamp (220) is a multi-petal clamp structure, and the clamp (220) is coaxially arranged with the clamp seat (210).

4. The ultrasonic nondestructive detection mechanism for inner and outer walls of a stainless steel pipe according to claim 1, characterized in that: The number of the connecting rods (322) is four and they are evenly divided into two groups, and the two connecting rods (322) are arranged parallel to each other, and each group of connecting rods (322) is symmetrically arranged on both sides of the wheel seat (320).

5. The ultrasonic nondestructive detection mechanism for inner and outer walls of a stainless steel pipe according to claim 4, characterized in that: The wheel seat (320) is a McNabb mother wheel structure and is arranged parallel to the axis of the pipe assembly (200). A motor (321) for driving the omnidirectional wheel (330) to rotate is fixedly mounted on one side of the wheel seat (320).

6. The ultrasonic nondestructive detection mechanism for inner and outer walls of a stainless steel pipe according to claim 1, characterized in that: The ultrasonic detector (430) is an arc-shaped plate-shaped structure, and is used to perform ultrasonic detection on the inner and outer tube walls of the stainless steel tube.

7. The ultrasonic nondestructive detection mechanism for inner and outer walls of a stainless steel pipe according to claim 1, characterized in that: The scissor-type connecting rod (420) comprises a plurality of movable connecting rods, and the plurality of movable connecting rods are evenly divided into a plurality of groups in pairs, each group of movable connecting rods rotates in an X shape, and each group of movable connecting rods is connected and arranged in sequence.

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