Ultrasonic nondestructive testing equipment for pipeline crack detection

Abstract

The invention relates to ultrasonic nondestructive testing equipment for pipeline crack detection, and belongs to the technical field of pipeline detection.An automatic reset device is designed between an ultrasonic detection assembly and a testing equipment main body, and the automatic reset device is composed of a supporting part, two arc-shaped movable parts, a swing part, a guide part and a spring part; buffering and resetting functions are achieved through an elastic adjusting mechanism, when the equipment encounters an obstacle in the advancing process and the ultrasonic nondestructive testing assembly is subjected to external impact, the automatic resetting assembly absorbs impact energy through elastic deformation, and the situation that the whole equipment inclines or gets stuck due to the fact that a rigid structure directly transmits external force is avoided; after the impact is eliminated, the elastic deformation restoring force drives the detection assembly to return to the horizontal position, it is ensured that the detection module always directly faces the pipe wall, and continuity and accuracy of detection data are maintained. According to the design, the problems of data distortion and shutdown caused by sudden offset of traditional equipment are solved through dual functions of dynamic buffering and automatic return.

Description

Technical Field

[0001] This invention belongs to the field of pipeline inspection technology, specifically relating to an ultrasonic non-destructive testing device for detecting pipeline cracks. Background Technology

[0002] Pipelines are critical infrastructure for transporting vital fluids such as oil and natural gas, and their safety is paramount. To promptly detect cracks on the pipe surface, non-destructive testing using ultrasonic testing equipment is typically employed. Current ultrasonic testing equipment generally includes a support frame, an ultrasonic testing module, and guide wheels on both sides. The guide wheels hold the pipe and guide the equipment forward smoothly, ensuring the testing module always faces the pipe wall, thus guaranteeing the accuracy of the test data.

[0003] However, actual pipe surfaces are often not smooth, frequently exhibiting irregularities such as weld scars, raised rust, accumulated dirt, or localized deformation. When the equipment reaches these locations, one of the guide wheels may suddenly be pushed by an obstacle, causing the entire equipment to experience a sudden torque. At this point, because most existing equipment uses a rigid structure and lacks effective buffering and adjustment capabilities, it is easy for the entire unit to tilt or even jam. This not only causes the detection module to temporarily deviate from the correct position, resulting in data distortion or missed detections in that area, but may also force the equipment to stop, requiring manual readjustment, severely impacting detection efficiency and data consistency.

[0004] Although some improvements exist, such as using softer guide wheel materials or strengthening spring clamping force, these methods can only handle minor bumps and dents. They are still difficult to effectively resolve obvious protrusions or severe deformations. The fundamental problem is that traditional structures cannot achieve the automatic adaptive function of "obstacle avoidance and correction after obstacle passage". Therefore, how to enable the detection equipment to maintain stable passage and timely recovery of posture under complex pipe surface conditions has become a key technical problem that urgently needs to be solved in pipeline crack detection. In response, the inventors have proposed an ultrasonic non-destructive testing device for pipeline crack detection. Summary of the Invention

[0005] To address the problems of existing ultrasonic testing equipment causing component misalignment, data distortion, and equipment jamming when encountering irregular obstacles on pipe surfaces due to the lack of buffering and automatic reset functions, this invention provides an ultrasonic non-destructive testing device for pipe crack detection.

[0006] The objective of this invention can be achieved through the following technical solutions: An ultrasonic non-destructive testing device for detecting pipe cracks includes a support base, an ultrasonic non-destructive testing component disposed on the support base, and guide components disposed on both sides of the ultrasonic non-destructive testing component. It also includes an automatic reset component disposed between the support base and the ultrasonic non-destructive testing component. The automatic reset component has buffering and reset functions, and can provide elastic adjustment when the ultrasonic non-destructive testing component is displaced due to external impact, and restore the ultrasonic non-destructive testing component to a horizontal position after the impact is eliminated.

[0007] As a further embodiment of the present invention, the automatic reset assembly includes a limiting part, two arc-shaped movable parts, a swinging part, a guide part, and a spring part, which are vertically arranged on the support base. The first ends of the two arc-shaped movable parts are rotatably connected to the limiting part, and the two ends of the spring part are respectively connected to the second ends of the two arc-shaped movable parts. The spring part is located between the second ends of the two arc-shaped movable parts, and a gap is formed between the arc-shaped structures of the two arc-shaped movable parts. The swinging part passes through the gap formed between the arc-shaped structures of the two arc-shaped movable parts and rotatably passes through the limiting part. The guide part is arranged on the swinging part, and the two ends of the guide part can respectively fit against the outer wall of the second end of the two arc-shaped movable parts. The ultrasonic non-destructive testing assembly is arranged on the swinging part.

[0008] As a further embodiment of the present invention, two blocks are provided on the limiting part below the guide part to limit the rotation angle of the guide part, and the two blocks can respectively fit against the two ends of the guide part.

[0009] As a further embodiment of the present invention, a fixed rod is vertically arranged on the support part, and the first ends of the two arc-shaped movable parts are rotatably sleeved on the fixed rod. The first ends of the arc-shaped movable parts are limited by friction with the fixed rod, and the frictional force between the first ends of the arc-shaped movable parts and the fixed rod is greater than the force brought to the swinging part by the combined gravity of the ultrasonic non-destructive testing component and the guide component.

[0010] As a further embodiment of the present invention, the arc-shaped movable part includes an arc-shaped rod and an L-shaped rod. The first end of the arc-shaped rod is rotatably sleeved on the fixed rod, and the second end of the arc-shaped rod is connected to the crossbar of the L-shaped rod. The spring part is located between the two L-shaped rods of the two arc-shaped movable parts, and the two ends of the spring part are respectively connected to the vertical bars of the two L-shaped rods.

[0011] As a further embodiment of the present invention, the arc-shaped rod and the fixed rod are connected by a torsion spring, the torsion spring is sleeved on the fixed rod, and the two ends of the torsion spring are respectively connected to the first end of the arc-shaped rod and the fixed rod.

[0012] As a further embodiment of the present invention, the swinging part includes a rotating rod and a swinging block. The rotating rod passes through the gap formed between two arc-shaped rods and rotatably passes through the support part. There are two automatic reset components, which are symmetrically arranged at both ends of the rotating rod. The swinging block is fixedly arranged at the center of the rotating rod. The ultrasonic non-destructive testing component is vertically arranged on the swinging block.

[0013] As a further embodiment of the present invention, the guide portion includes a connecting block fixedly sleeved on the rotating rod and two guide rods. The two guide rods are vertically arranged at both ends of the connecting block, and the L-shaped rods of the two arc-shaped movable portions are arranged between the two guide rods, with the outer walls of the L-shaped rods of the two arc-shaped movable portions respectively abutting against the two guide rods.

[0014] As a further embodiment of the present invention, the stop block limits the maximum swing angle of the swing block to less than or equal to 30°.

[0015] As a further embodiment of the present invention, both the stop block and the guide rod are fitted with elastic protective components.

[0016] The beneficial effects of this invention are: An automatic reset device is designed between the ultrasonic detection component and the main body of the detection equipment. This device consists of a support, two arc-shaped movable parts, a swinging part, a guide, and a spring. Through the rotational connection between the structures, guide engagement, and spring reset, the probe, after being subjected to an asymmetrical impact, converts the impact force into spring compression energy and releases elastic potential energy after the impact disappears, automatically resetting the ultrasonic detection component to a horizontal position, thus maintaining detection stability. The cooperation between the swinging part and the guide allows the probe to drive the spring for directional compression when subjected to a unilateral impact, and rapidly releases the energy after the impact disappears, achieving automatic probe reset and shortening recovery time. The two arc-shaped movable parts do not move synchronously, enabling a differential response to unilateral impacts, effectively avoiding overall... The additional disturbance caused by the linkage between the two sides of the buffer structure ensures that the probe is always restricted by the guide part during the reset process, thus ensuring that its final posture returns to a horizontal state. This reduces the loss of coupling medium and echo signal fluctuations caused by tilting. By setting elastic buffer sleeves or arc-shaped groove structures on the guide part, limit block and swing block, not only is the stress concentration at the moment of impact reduced, but the adaptability of the equipment under complex pipeline surface conditions is also improved. The torsion spring connection between the arc-shaped moving part and the fixed rod gives the entire mechanism a dual reset function, further improving the stability and durability of the device. This invention can effectively solve the problem of probe posture instability caused by asymmetric impact in high-speed pipeline inspection of existing detection equipment, ensuring the continuity and accuracy of crack detection, and has significant engineering application value. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the automatic reset device of the present invention; Figure 3 This is a schematic diagram of the arc-shaped movable part structure of the present invention; Figure 4 This is a schematic diagram of the swing section structure of the present invention; Figure 5 This is a schematic diagram of the mounting position of the fixing rod of the present invention; Figure 6 This is a schematic diagram showing the installation position of the rotating rod of the present invention.

[0019] Legend: 1. Support base; 2. Ultrasonic non-destructive testing component; 3. Automatic reset device; 31. Limiting part; 32. Arc-shaped moving part; 321. Arc-shaped rod; 322. L-shaped rod; 33. Swinging part; 331. Rotating rod; 332. Swinging block; 34. Guide part; 341. Connecting block; 342. Guide rod; 35. Spring part; 4. Guide assembly; 5. Stop block; 6. Fixing rod. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0021] refer to Figure 1 - Figure 6This embodiment provides an ultrasonic non-destructive testing device for detecting pipe cracks, including a support base 1, an ultrasonic non-destructive testing component 2 disposed on the support base 1, and guide components 4 disposed on both sides of the ultrasonic non-destructive testing component 2. It also includes an automatic reset component disposed between the support base 1 and the ultrasonic non-destructive testing component 2. The automatic reset component has buffering and reset functions, providing elastic adjustment when the ultrasonic non-destructive testing component 2 shifts due to external impact, and restoring the ultrasonic non-destructive testing component 2 to a horizontal position after the impact is eliminated. The automatic reset component includes a limiting part 31 vertically disposed on the support base 1 and two arc-shaped movable parts 32. The swing part 33, guide part 34, and spring part 35 are provided. The first ends of the two arc-shaped movable parts 32 are rotatably connected to the limiting part 31. The two ends of the spring part 35 are connected to the second ends of the two arc-shaped movable parts 32, and the spring part 35 is located between the second ends of the two arc-shaped movable parts 32. A gap is formed between the arc-shaped structures of the two arc-shaped movable parts 32. The swing part 33 passes through the gap formed between the arc-shaped structures of the two arc-shaped movable parts 32 and rotatably passes through the limiting part 31. The guide part 34 is provided on the swing part 33. The two ends of the guide part 34 can respectively fit against the outer wall of the second end of the two arc-shaped movable parts 32. The ultrasonic non-destructive testing component 2 is provided on the swing part 33.

[0022] Existing ultrasonic non-destructive testing equipment for pipeline crack detection suffers from uneven pipe surfaces, which can cause the guide wheels to jam or tilt, resulting in distorted test data. Current buffer designs also have limited effectiveness. Therefore, in order to… To address the issues of existing pipeline crack detection equipment lacking effective buffering and automatic reset functions when encountering irregular pipe surfaces, leading to detection module misalignment, data distortion, and equipment jamming, this embodiment provides a vertical support reference through a limiting part 31. Two arc-shaped movable parts 32 are rotatably connected to form an elastically deformable symmetrical structure. Their arc design generates deformation space under external force, while a spring part 35 connects the two ends to form an elastic constraint, allowing the two arc-shaped movable parts 32 to automatically rebound after separation under force. A swing part 33 penetrates the gap between the arc-shaped movable parts 32 and is rotatably connected to the limiting part 31, allowing the ultrasonic detection component to rotate around the limiting axis with the swing part 33. The fit between the guide part 34 and the outer wall of the arc-shaped movable part 32 converts the rotational motion of the swing part 33 into radial displacement of the arc-shaped movable part 32, which in turn absorbs impact energy through the elastic deformation of the spring part 35. When an external impact causes the ultrasonic detection component to shift, the separation compression spring 35 of the arc-shaped movable part 32 provides cushioning. After the impact is eliminated, the spring 35 recovers its deformation, pushing the arc-shaped movable part 32 back to its original position. Then, the swing part 33 is guided to rotate through the contact surface between the guide part 34 and the arc-shaped movable part 32, ultimately restoring the detection component to a horizontal position. The symmetrical layout of the arc-shaped movable part 32 and the bidirectional elasticity of the spring 35 ensure multi-directional adaptive adjustment capability after shifting. The linkage design between the swing part 33 and the guide part 34 converts the shift of the detection component into recoverable mechanical motion, thereby maintaining stable detection posture under complex pipe surface conditions.

[0023] Furthermore, it should be noted that, to prevent the ultrasonic detection component from failing to reset or being damaged due to excessive swing angle under external impact, in one embodiment, two stops 5 are provided on the limiting part 31 below the guide part 34 to limit the rotation angle of the guide part 34. The two stops 5 can respectively fit against both ends of the guide part 34. By setting two stops 5 below the limiting part 31, a physical limiting mechanism for the rotation angle of the guide part 34 is constructed. The two stops 5 form contact constraints with both ends of the guide part 34. When an external impact causes the guide part 34 to swing, the stops 5 prevent the guide part 34 from exceeding the preset angle range through rigid contact. This design retains the swing margin required by the automatic reset component to cope with the impact, and prevents excessive deflection from causing the spring part 35 to stretch or the mechanical structure to deform. The way the stops 5 fit against the end face of the guide part 34 can precisely control the consistency between the swing amplitude and the reset path, ensuring that the ultrasonic detection component can accurately reset to the horizontal detection position along the original trajectory after the impact is eliminated.

[0024] To prevent the arc-shaped movable part 32 from rotating unexpectedly due to gravity when the ultrasonic testing equipment encounters an obstacle on the pipe surface, thus affecting the stability of the automatic reset of the testing component, in one embodiment, a fixed rod 6 is vertically arranged on the support. The first ends of the two arc-shaped movable parts 32 are rotatably sleeved on the fixed rod 6. The first ends of the arc-shaped movable parts 32 are limited by friction with the fixed rod 6, and the frictional force between the first ends of the arc-shaped movable parts 32 and the fixed rod 6 is greater than the force exerted by the gravity of the ultrasonic non-destructive testing component 2 and the guide component 4 on the swing part 33. Through the frictional cooperation between the fixed rod 6 and the arc-shaped movable parts 32, dynamic balance control is achieved when the testing equipment is impacted. The vertically arranged fixed rod 6 provides a stable rotation axis for the arc-shaped movable parts 32, and the rotatable sleeve structure allows the movable parts to generate rotational displacement when subjected to external force.

[0025] It should be noted that the specially designed friction threshold control here is crucial. By ensuring that the frictional resistance is greater than the rotational driving force formed by the superposition of the weight of the detection component and the gravity of the guide component 4, it is guaranteed that the moving parts remain stationary during normal equipment movement, and that when encountering a sudden obstacle impact, the external force can overcome the frictional resistance to drive the moving parts to rotate and avoid it. This precise mechanical balance design not only avoids malfunctions caused by the equipment's own weight, but also triggers the buffer mechanism in time when a real impact occurs, providing a basic guarantee for the subsequent automatic reset function. At the same time, in actual movement, the actual pipe surface is often not smooth, and there are often irregular conditions such as welding scars, rust protrusions, dirt accumulation, or local deformation. When the equipment moves to these positions, one of the guide wheels will be suddenly pushed by the obstacle, causing the entire equipment to be subjected to a sudden torque. The friction threshold design here can ensure that when there is an obstacle on one side, when one arc-shaped moving part 32 moves, the other arc-shaped moving part 32 can remain stationary. This design also needs to be combined with the spring part 35 to achieve this.

[0026] To avoid the problems of poor buffering effect and inaccurate reset caused by the unreasonable structure of the automatic reset component when encountering pipe surface obstacles in existing pipe crack detection equipment, and to improve the equipment's elastic adjustment capability and horizontal recovery accuracy in the face of impact, in one embodiment, the arc-shaped movable part 32 includes an arc-shaped rod 321 and an L-shaped rod 322. The first end of the arc-shaped rod 321 is rotatably sleeved on the fixed rod 6, and the second end of the arc-shaped rod 321 is connected to the crossbar of the L-shaped rod 322. The spring part 35 is located between the two L-shaped rods 322 of the two arc-shaped movable parts 32. Between them, the two ends of the spring part 35 are respectively connected to the vertical rods of the two L-shaped rods 322. By decomposing the arc-shaped movable part 32 into a combination structure of arc-shaped rod 321 and L-shaped rod 322, the mechanical transmission path of the automatic reset component is optimized. Specifically, the first end of the arc-shaped rod 321 is rotatably sleeved on the fixed rod 6, so that the arc-shaped movable part 32 can rotate around the fixed rod 6 to form a swing fulcrum when subjected to force, while the second end is rigidly connected to the horizontal bar of the L-shaped rod 322, which converts the rotational motion of the arc-shaped rod 321 into the lateral displacement of the L-shaped rod 322. The spring part 35 is arranged between the two vertical bars of the L-shaped rod 322, directly applying elastic force to the vertical bars of the L-shaped rod 322. Compared with the traditional transverse arrangement of springs, this structure not only enhances the buffering and absorption effect of impact force, but also ensures that the L-shaped rod 322 can accurately return to its initial position after the impact is eliminated through the symmetrical tension between the vertical bars. This nested combination of the arc-shaped rod 321 and the L-shaped rod 322 ensures the rotational freedom of the movable part, while effectively preventing the spring part 35 from deflecting and becoming unstable during compression through the rigid guiding effect of the vertical bars of the L-shaped rod 322, thereby improving the reset accuracy.

[0027] To ensure that the arc-shaped rod 321 can automatically reset after being deflected by an external force, thereby ensuring that the ultrasonic detection assembly quickly returns to a horizontal position after the impact is eliminated and avoiding reset delay or failure caused by rigid connection, in one embodiment, the arc-shaped rod 321 and the fixed rod 6 are connected by a torsion spring. The torsion spring is sleeved on the fixed rod 6, and its two ends are respectively connected to the first end of the arc-shaped rod 321 and the fixed rod 6. By using the torsion spring as the connecting medium between the arc-shaped rod 321 and the fixed rod 6, the elastic reset function is realized. Specifically, the torsion spring is sleeved on the fixed rod 6, ensuring that the rotation axis of the torsion spring coincides with the axis of the fixed rod 6, thus guaranteeing the stability of torque transmission. The two ends of the torsion spring are fixed to the arc-shaped rod 321 and the fixed rod 6, respectively. When an external impact causes the arc-shaped rod 321 to rotate around the fixed rod 6, the torsion spring undergoes torsional deformation and stores elastic potential energy. At this time, the offset of the arc-shaped rod 321 is absorbed by the elastic deformation of the torsion spring. When the impact disappears, the torsion spring releases the stored potential energy and drives the arc-shaped rod 321 back to its initial position through a reverse torque. This design not only achieves a non-rigid connection through the elastic characteristics of the torsion spring but also utilizes the unique rotational direction elastic recovery characteristic of the torsion spring to precisely match the motion trajectory of the arc-shaped rod 321 rotating around the fixed rod 6. Compared with traditional tension or compression spring solutions, this significantly improves the directional control accuracy and response speed of the reset action. Furthermore, the torsion spring effectively increases the friction between the arc-shaped rod 321 and the fixed rod 6, better ensuring that when encountering an obstacle, only the arc-shaped rotating part closer to the obstacle moves, while the other remains stationary.

[0028] To better prevent the ultrasonic testing equipment from tilting or jamming due to unilateral force when encountering obstacles on the pipe surface, and to ensure that the testing component is always in the correct position, in one embodiment, the swing part 33 includes a rotating rod 331 and a swing block 332. The rotating rod 331 passes through the gap formed between two arc-shaped rods 321 and rotates through the support part. There are two automatic reset components, which are symmetrically arranged at both ends of the rotating rod 331. The swing block 332 is fixedly arranged at the center of the rotating rod 331. The ultrasonic non-destructive testing component 2 is vertically arranged on the swing block 332. Through the combination of the rotating rod 331 and the swing block 332, the swing part 33 enables the ultrasonic testing component to rotate around the axis of the rotating rod 331. The line swings freely, and the rotating rod 331 passes through the gap formed by the two arc-shaped rods 321 and rotates through the support part. This provides a stable rotation axis for the swing and also constrains the displacement range of the rotating rod 331 through the gap between the arc-shaped rods 321. Two automatic reset components are symmetrically arranged at both ends of the rotating rod 331. When the equipment is impacted on one side, the arc-shaped rotating parts on the same side of the two automatic reset components can move synchronously to balance the offset torque and avoid failure of a single reset mechanism due to uneven force. The swing block 332 is fixed at the center of the rotating rod 331, so that the ultrasonic detection component is vertically installed on the swing block 332, ensuring that it always maintains the set detection angle with the pipe wall during the swing and avoiding distortion of detection data due to tilting.

[0029] To avoid the problem that the guide assembly 4 cannot effectively limit the swing amplitude and prevent structural wear when the ultrasonic testing equipment encounters obstacles on the pipe surface, in one embodiment, the guide part 34 includes a connecting block 341 fixedly sleeved on the rotating rod 331 and two guide rods 342. The two guide rods 342 are vertically arranged at both ends of the connecting block 341. The L-shaped rods 322 of the two arc-shaped movable parts 32 are arranged between the two guide rods 342, and the outer walls of the L-shaped rods 322 of the two arc-shaped movable parts 32 are respectively attached to the two guide rods 342. Through the fixed sleeve relationship between the connecting block 341 and the rotating rod 331, it is ensured that the guide part 34 can rotate synchronously with the swing part 33, so as to achieve the stability of motion transmission. The two vertically arranged guide rods 342 form a symmetrical limiting structure, which limits the range of motion of the L-shaped rods 322 to between the two, allowing the L-shaped rods 322 to generate necessary displacement when subjected to force, while preventing excessive displacement that could lead to structural failure. The fitted design of the outer wall of the L-shaped rod 322 and the guide rod 342 allows the guide rod 342 to generate a direct contact reaction force on the swing of the L-shaped rod 322 when the equipment encounters an obstacle. This rigid contact, combined with the elastic restoring force of the spring part 35, forms a composite adjustment mechanism. This structure, together with the rotation angle limitation of the stop block 5, constructs a multi-level swing control system, ensuring the avoidance function while maintaining the horizontal stability of the detection component.

[0030] To further prevent the ultrasonic testing equipment from malfunctioning due to excessive swing amplitude when encountering obstacles on the pipe surface, leading to reset failure or structural damage, in one embodiment, the stop block 5 limits the maximum swing angle of the swing block 332 to less than or equal to 30°. By setting the stop block 5 to mechanically limit the swing angle of the swing block 332, the maximum swing angle is controlled within 30°. As a rigid limiting structure, when an obstacle on the pipe surface impacts the guide assembly 4, the swing block 332 deflects under the action of the rotating rod 331. At this time, the guide rod 342 contacts the stop block 5 to form a rigid block, preventing the swing angle from exceeding the critical value. The angle threshold of 30° is based on the balance between the height of common obstacles on the pipe surface and the overall center of gravity distribution of the equipment. This ensures that the guide assembly 4 has sufficient clearance when encountering large protrusions, while also preventing excessive deflection that could cause the spring part 35 to exceed its stretch limit or the torsion spring to undergo plastic deformation. This angle limitation ensures that the equipment can maintain the elastic deformation range of the automatic reset assembly even under extreme operating conditions, avoiding permanent mechanical damage caused by uncontrolled swing amplitude.

[0031] To prevent wear or damage to components caused by rigid collisions between the stop block 5 and the guide rod 342 when the ultrasonic non-destructive testing equipment encounters obstacles on the pipe surface, in one embodiment, elastic protective elements are fitted on both the stop block 5 and the guide rod 342. By adding elastic protective elements to the surfaces of the stop block 5 and the guide rod 342, buffer protection is achieved for the contact area. Specifically, the elastic protective element is fitted on the outer surface of the stop block 5 and can absorb the impact energy generated when the guide rod 342 contacts the stop block 5, avoiding surface wear or deformation caused by direct collision of metal parts. At the same time, the elastic protective element fitted on the guide rod 342 can make flexible contact with the arc-shaped moving part 32 during the reset process of the swing part 33. This ensures the limiting and guiding function of the guide rod 342 on the L-shaped rod 322, and reduces the mechanical stress of the moving parts through elastic deformation. This dual elastic protection design maintains the mechanical strength requirements of the automatic reset assembly and effectively extends the service life of key moving parts. In particular, it can significantly reduce the equipment maintenance frequency, especially for collisions that frequently occur when there are irregular protrusions on the pipe surface.

[0032] It should be noted that the ultrasonic non-destructive testing component 2 is a common component in this field and will not be described in detail here. The guide component 4 includes a guide plate and two guide wheels, the specific structure and positional relationship of which are as follows. Figure 1 As shown in the image, I will not elaborate further here.

[0033] The working principle and workflow of this invention: This invention mounts an ultrasonic non-destructive testing component 2 on a support base 1, and an automatic reset device 3 is provided between the component and the main body. The automatic reset device 3 consists of a limiting part 31, an arc-shaped movable part 32, a swinging part 33, a guide part 34, and a spring part 35. When the equipment travels inside the pipe, if the testing component is impacted by an obstacle, the arc-shaped movable part 32 deforms under the external force, and the spring part 35 is simultaneously compressed to absorb the impact energy. This elastic buffering effect prevents rigid impacts from being directly transmitted to the testing body, preventing the equipment from jamming or tilting due to uneven force. At the same time, the swinging part 33 and the guide part 34 maintain the force direction of the testing component, ensuring that it always faces the pipe wall, thus guaranteeing the stability of the detection process. During normal testing, the ultrasonic non-destructive testing component 2 is fixed to the swinging part 33 to perform real-time crack detection on the inner wall of the pipe; the guide component 4 helps maintain the direction of the equipment's movement in the pipe. When the equipment encounters irregular protrusions or obstacles, the detection component shifts under the action of external force, and the automatic reset device 3 is immediately activated. The arc-shaped moving part 32 and the spring part 35 generate elastic deformation to absorb the impact energy, and the swinging part 33 is controllably deflected under the constraint of the guide part 34. After the external impact disappears, the spring part 35 releases the stored elastic potential energy, driving the arc-shaped moving part 32 to reset, and driving the swinging part 33 and the detection component back to the horizontal position. Through this dynamic buffering and automatic self-alignment process, the equipment can continuously maintain the correct orientation of the ultrasonic probe, ensuring the continuity and accuracy of the detection data, while significantly reducing the risk of downtime and failure caused by sudden obstacles.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An ultrasonic non-destructive testing apparatus for pipeline crack detection, comprising a support base, an ultrasonic non-destructive testing assembly disposed on the support base, and a guide assembly disposed on both sides of the ultrasonic non-destructive testing assembly, characterized in that, The automatic reset assembly is arranged between the support base and the ultrasonic nondestructive testing assembly, has a buffering and resetting function, can provide elastic adjustment when the ultrasonic nondestructive testing assembly is deviated due to external impact, and can restore the ultrasonic nondestructive testing assembly to a horizontal position after the impact is eliminated.

2. The ultrasonic non-destructive testing device for pipe crack detection according to claim 1, wherein, The automatic reset assembly comprises a limiting portion vertically arranged on the support base, two arc-shaped movable portions, a swinging portion, a guiding portion and a spring portion, the first ends of the two arc-shaped movable portions are rotationally connected with the limiting portion, the two ends of the spring portion are connected with the second ends of the two arc-shaped movable portions, the spring portion is located between the second ends of the two arc-shaped movable portions, a gap is formed between the arc-shaped structures of the two arc-shaped movable portions, the swinging portion penetrates through the gap formed between the arc-shaped structures of the two arc-shaped movable portions and rotationally penetrates through the limiting portion, the guiding portion is arranged on the swinging portion, the two ends of the guiding portion can be respectively attached to the outer walls of the second ends of the two arc-shaped movable portions, and the ultrasonic nondestructive testing assembly is arranged on the swinging portion.

3. The ultrasonic non-destructive testing device for pipe crack detection according to claim 2, wherein, Two stoppers for limiting the rotation angle of the guiding portion are arranged on the limiting portion below the guiding portion, and the two stoppers can be respectively attached to the two ends of the guiding portion.

4. The ultrasonic non-destructive testing apparatus for pipe crack detection according to claim 3, wherein A fixing rod is vertically arranged on the support portion, the first ends of the two arc-shaped movable portions are rotationally sleeved on the fixing rod, the first ends of the arc-shaped movable portions are limited by friction between the first ends and the fixing rod, and the friction force between the first ends of the arc-shaped movable portions and the fixing rod is greater than the force brought to the swinging portion by the gravity of the ultrasonic nondestructive testing assembly and the guiding assembly.

5. The ultrasonic non-destructive testing device for pipe crack detection according to claim 4, wherein, The arc-shaped movable portion comprises an arc-shaped rod and an L-shaped rod, the first end of the arc-shaped rod is rotationally sleeved on the fixing rod, the second end of the arc-shaped rod is connected with the horizontal rod of the L-shaped rod, the spring portion is located between the two L-shaped rods of the two arc-shaped movable portions, and the two ends of the spring portion are respectively connected with the vertical rods of the two L-shaped rods.

6. The ultrasonic non-destructive testing device for pipe crack detection according to claim 5, wherein, The arc-shaped rod and the fixing rod are connected by a torsion spring, the torsion spring is sleeved on the fixing rod, and the two ends of the torsion spring are respectively connected with the first end of the arc-shaped rod and the fixing rod.

7. The ultrasonic non-destructive testing device for pipe crack detection according to claim 5, wherein The swinging portion comprises a rotating rod and a swinging block, the rotating rod penetrates through the gap formed between the two arc-shaped rods and rotationally penetrates through the support portion, the number of the automatic reset assemblies is two, the two automatic reset assemblies are symmetrically arranged at the two ends of the rotating rod, the swinging block is fixedly arranged at the center of the rotating rod, and the ultrasonic nondestructive testing assembly is vertically arranged on the swinging block.

8. The ultrasonic non-destructive testing device for pipe crack detection according to claim 7, wherein, The guiding portion comprises a connecting block fixedly sleeved on the rotating rod and two guiding rods, the two guiding rods are vertically arranged at the two ends of the connecting block, the L-shaped rods of the two arc-shaped movable portions are arranged between the two guiding rods, and the outer walls of the L-shaped rods of the two arc-shaped movable portions are respectively attached to the two guiding rods.

9. The ultrasonic non-destructive testing device for pipe crack detection according to claim 7, wherein, The maximum swinging angle of the swinging block limited by the stoppers is less than or equal to 30°.

10. The ultrasonic non-destructive testing device for pipe crack detection according to claim 8, wherein, The stoppers and the guiding rods are both sleeved with elastic protection members.

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