Self-adaptive welding seam detection mechanism and annular welding seam detection system

Abstract

The utility model relates to the field of welding seam detection, in particular to a self-adaptive welding seam detection mechanism and an annular welding seam detection system.The detection mechanism comprises a universal unit used for fixing a detection seat, the universal unit comprises a fixing rod and a ball bearing fixed to the end of the fixing rod, and a floating table coaxial with the fixing rod is arranged on the ball bearing; the probe is fixed on the floating table through the detection seat and rotates universally along with the floating table, and the fixed rod is driven by the telescopic end to drive the detection seat to abut against a to-be-detected product. The probe provided by the utility model can generate self-adaptive floating action when advancing along the welding seam and is always clung to the welding seam, the position of the probe does not need to be repeatedly adjusted, and the detection efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of weld detection, and specifically relates to a self-adaptive weld detection mechanism and an annular weld detection system. BACKGROUND

[0002] After the annular weld of a product such as a storage tank is completed through friction stir welding process, the weld quality needs to be detected to evaluate whether the weld has defects (for example, cracks, inclusions, pores, etc.). The existing detection methods for annular welds include the following types: 1. Ultrasonic detection: using the propagation characteristics of high-frequency sound waves in materials to detect internal defects of the weld. By analyzing the reflection and transmission of sound waves in the material, cracks, pores, and incomplete fusion defects can be identified. 2. X-ray detection: detecting internal defects of the weld by penetrating the material with X-rays and forming an image on film or a digital detector. 3. Magnetic powder detection: using the magnetism of ferromagnetic materials to detect surface and near-surface defects. During the detection process, the workpiece is magnetized, and then magnetic powder is applied, and visible magnetic powder aggregation is formed at the defect site. 4. Penetrant testing: using a penetrant liquid to penetrate surface opening defects, and then applying a developer to reveal the defects.

[0003] Among the above-mentioned detection schemes, the ultrasonic detection is the mainstream detection scheme, which uses an ultrasonic phased array system to detect the weld. The detection methods generally fall into two categories: 1. The product to be tested is stationary, and the probe of the ultrasonic phased array system rotates around the annular weld of the product to be tested. 2. The ultrasonic phased array system is stationary, and the probe is brought into contact with the annular weld of the product to be tested, and then the product to be tested is rotated by a rotating platform. Regardless of which detection method is used, the problem of uneven weld will be encountered during non-destructive testing. After the probe comes into contact with the uneven weld, the position of the probe will shift, affecting the subsequent detection accuracy. To solve this problem, as described in the publication number "CN222014089U", when the detection probe rotates around the weld, an infrared distance sensor detects the distance between the weld and the detection probe in real time. When the surface of the pipe around the girth weld is uneven, the detection probe is moved towards or away from the pipe by an electric telescopic rod, thereby adjusting the distance between the probe and the weld. However, this adjustment method requires the infrared probe to detect the distance first, and then the telescopic rod to drive the probe to adjust the position, which has a lag in position adjustment, and the infrared probe needs to repeatedly adjust the position of the weld, resulting in extremely low detection efficiency. Therefore, it is urgent to solve this problem. SUMMARY

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a self-adaptive weld detection mechanism and an annular weld detection system. The probe of the utility model can produce an adaptive floating action when it travels along the weld, always closely adhering to the weld, without the need to repeatedly adjust the position of the probe, resulting in high detection efficiency.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A self -adaptation type weld joint detection mechanism, detection mechanism includes the universal unit for fixed detection seat, universal unit includes fixed rod and the ball bearing fixed in the fixed rod end, the floating platform of coaxial arrangement with fixed rod is arranged on the ball bearing, the probe is fixed on the floating platform through the detection seat and is followed floating platform universal rotation, the fixed rod is driven by telescopic end, drives detection seat and the product to be measured abuts.

[0007] As a further scheme of the utility model: the fixed platform is provided on the rod of fixed rod, at least two groups of pen-shaped air cylinders are installed on the fixed platform and arranged in parallel with the fixed rod, each pen-shaped air cylinder is arranged uniformly around the fixed rod and exerts elastic abutment force on the floating platform.

[0008] As a further scheme of the utility model: the limiting rod arranged in parallel with the fixed rod is also installed on the fixed platform of fixed rod, the limiting hole is opened on the floating platform for the limiting rod to pass through, and the hole diameter of the limiting hole is greater than the diameter of the limiting rod.

[0009] As a further scheme of the utility model: the mounting hole is opened at the shaft center of the floating platform for the fixed rod to pass through, and the hole diameter of the mounting hole is greater than the diameter of the fixed rod; the ball bearing of the fixed rod rod end is fixed on the table surface of the floating platform through the bearing seat.

[0010] As a further scheme of the utility model: the probe on the detection seat is connected with the detection wedge block, the rollers are fixed on both sides of the probe of the detection seat, the detection seat rolls and travels along the direction of the weld of the product to be measured through the rollers, and the coupling agent pipe for spraying coupling agent to the weld area is also arranged on both sides of the detection seat.

[0011] As a further scheme of the utility model: the coupling agent pipe is telescopic bamboo joint pipe.

[0012] As a further scheme of the utility model: the detection mechanism includes the adjusting slide rail arranged in parallel with the fixed rod, the adjusting slide rail is arranged on the fixed seat, the sliding seat is arranged on the adjusting slide rail and is in sliding cooperation with the adjusting slide rail, the universal unit is fixed on the sliding seat, and the spring is arranged between the fixed seat and the sliding seat in parallel with the fixed rod.

[0013] As a further scheme of the utility model: in the direction of the weld detection, the detection seat is provided with at least two groups, and the adjusting slide rail and the universal unit on the detection mechanism correspond to the number of detection seats.

[0014] The utility model provides a kind of annular weld detection system, including rotating platform and the product to be measured coaxially arranged with the rotation axis of rotating platform, the product to be measured is clamped and fixed after being clamped by tool fixture and rotates synchronously with rotating platform, rotating platform side is provided with fixed platform for installing detection mechanism, the detection seat of detection mechanism rolls along the circumferential weld of the product to be measured.

[0015] As further scheme of the utility model: the fixed platform includes lifting module that lifts along vertical direction, and the telescopic module is arranged on the lifting seat of lifting module, and the telescopic module generates telescopic action along the radial direction of rotating platform, and the detection mechanism is fixed on the telescopic seat of telescopic module.

[0016] Compared with prior art, the utility model has the beneficial effects that:

[0017] 1, the detection seat of the utility model is fixed on floating platform, and the detection seat is driven by ball bearing to realize universal rotation, and when passing through uneven weld, the detection seat can rotate in multiple degrees of freedom with floating platform, so as to always adhere to weld, without repeatedly adjusting probe position, and detection efficiency is high.

[0018] 2, the floating platform of the utility model is elastically abutted by multiple groups of pen-shaped air cylinders, and since pen-shaped air cylinder is in extended state and continuously supplies air, it always applies elastic abutment force to floating platform, and after passing through uneven weld, the deflected floating platform is abutted by pen-shaped air cylinder to elastically reset, and is restored to initial compression state, to realize universal self-adaptive adjustment, and the floating platform limits the maximum deflection angle of floating platform by controlling the aperture of limiting hole.

[0019] 3, the detection seat of the utility model travels along weld by roller structure, and when traveling, bamboo joint type coupling agent pipe sprays coupling agent towards weld area, to facilitate probe to expand and continuously detect.

[0020] 4, the product to be measured of the utility model is clamped on rotating platform by tool fixture, and the detection seat is moved to the weld position of product to be measured by lifting of lifting module and telescopic action of telescopic module along the radial direction of rotating platform, to realize automatic adjustment of detection position.

[0021] 5, the fixed seat and sliding seat are connected by spring, and the spring is arranged in parallel with adjusting slide rail, to apply elastic force to sliding seat, and the probe is connected with sliding seat by universal unit, and the spring can be flexibly self-adapted to product installation tolerance and product weld tolerance in front and back; that is, the probe on detection mechanism of the application can be flexibly moved (along the radial direction of product to be measured) in front and back by the design of spring to adapt to fixture clamping tolerance, and the universal unit in front of probe can compensate tolerance caused by ring seam, to be self-adapted to product. ACCURACY OF DRAWINGS

[0022] Fig. 1 It is the structure schematic diagram of the utility model.

[0023] Fig. 2 It is the structure schematic view of the fixed table in the utility model.

[0024] Fig. 3 It is the structure schematic view of the detection mechanism in the utility model.

[0025] Fig. 4 It is the isometric view of the universal unit in the utility model.

[0026] Fig. 5 It is the sectional view of the universal unit in the utility model.

[0027] In the drawing,

[0028] 1, fixed table;11, lifting module;12, telescopic module;

[0029] 2, rotating platform;3, tool clamp;4, product to be measured;

[0030] 5, detection mechanism;

[0031] 51, universal unit;511, fixed rod;512, pen-shaped cylinder;513, floating table;

[0032] 5131, mounting hole;5132, limiting hole;

[0033] 514, ball bearing;515, bearing seat;516, limiting rod;

[0034] 52, fixed seat;53, adjusting slide rail;54, sliding seat;55, spring;

[0035] 56, detection seat;561, roller;562, detection wedge;563, probe;57, coupling agent pipe. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] Please refer to Figs. 1-5 In the embodiments of the utility model, a self-adaptive weld detection mechanism and an annular weld detection system, the product to be measured 4 is in a cylindrical shape, is fixed coaxially on the rotating platform 2 and rotates synchronously with the rotating platform 2, the tool clamp 3 is arranged coaxially on the rotating platform 2 to clamp and fix the product to be measured 4, and the circumferential weld to be measured is arranged circumferentially on the product to be measured 4.

[0038] The fixed table 1 is installed on the side of the rotating platform 2 and is staggered with the rotating platform 2, and the fixed table 1 is provided with a lifting module 11 that lifts in the vertical direction, which can be a linear power source such as a screw block mechanism or a linear cylinder. A telescopic module 12 is arranged on the driving end of the lifting module 11, and the telescopic module 12 is the same as the lifting module 11, which is also a linear power source. The telescopic direction of the telescopic module 12 is arranged radially along the rotating platform 2. The detection mechanism 5 is fixed on the driving end of the telescopic module 12 and is driven by the telescopic module 12 and the lifting module 11, and abuts against the weld of the product to be tested 4.

[0039] The detection mechanism 5 is provided with an adjusting slide rail 53 arranged radially along the rotating platform 2, and the number of the adjusting slide rail 53 is determined by the number of the probe 563. In this application, the preferred number is two groups. The adjusting slide rail 53 is arranged on the fixed seat 52 away from the rotating platform 2. The adjusting slide rail 53 is provided with a sliding seat 54 arranged adjacent to the rotating platform 2. The sliding seat 54 is in sliding fit with the adjusting slide rail 53. The fixed seat 52 and the sliding seat 54 are connected by a spring 55, which is arranged in parallel with the adjusting slide rail 53 and exerts an elastic force on the sliding seat 54. The probe 563 is connected with the sliding seat 54, and the spring 55 can flexibly adapt to the product installation tolerance and the product weld tolerance. The universal unit 51 is fixed on the sliding seat 54 and slides synchronously with the sliding seat 54.

[0040] The fixed seat 52 is fixedly connected with the driving end of the telescopic module 12.

[0041] The universal unit 51 includes a fixed rod 511 arranged in parallel with the adjusting slide rail 53. A fixed platform is coaxially arranged on the rod of the fixed rod 511. A ball bearing 514 is arranged on the rod end of the fixed rod 511 adjacent to the product to be tested 4. A floating table 513 is fixed on the ball bearing 514 through a bearing seat 515. The floating table 513 is coaxially arranged with the fixed rod 511.

[0042] The floating table 513 is provided with a mounting hole 5131 at the shaft center for the fixed rod 511 to pass through. The diameter of the mounting hole 5131 is larger than the diameter of the fixed rod 511. A plurality of pen-shaped cylinders 512 are arranged on the fixed platform of the fixed rod 511. The pen-shaped cylinders 512 are arranged in parallel with the fixed rod 511. Each pen-shaped cylinder 512 is arranged in a circumferential array around the fixed rod 511. The end of the pen-shaped cylinder 512 abuts against the floating table 513. The pen-shaped cylinder 512 is in a state of always being extended and supplied with gas, and exerts an elastic abutting force on the floating table 513.

[0043] The fixing platform of the fixing rod 511 is further provided with a limiting rod 516 arranged in parallel with the fixing rod 511, and the floating table 513 is provided with a limiting hole 5132 for the limiting rod 516 to pass through, the diameter of the limiting hole 5132 is larger than the diameter of the limiting rod 516, so that the floating table 513 can float in all directions, and the maximum floating angle of the floating table 513 is limited, and the self-rotation of the floating table 513 with too large an angle is limited.

[0044] A detection seat 56 for fixing the probe 563 is arranged on the floating table 513 and can float with the floating table 513, the detection seat 56 is provided with a detection wedge 562 connected with the probe 563, the side surface of the probe 563 is provided with a roller 561, the rolling direction of the roller 561 corresponds to the rotating direction of the rotating platform 2, the detection seat 56 rolls and moves along the welding seam direction of the product 4 to be detected through the roller 561, and then the detection of the welding seam is realized. Affected by the clamping tolerance of the product 4 to be detected or the uneven welding seam, the detection seat 56 floats in all directions through the floating table 513 during the process of passing through the welding seam, and always adheres to the welding seam, so as to ensure the detection accuracy.

[0045] Along the rotating direction of the rotating platform 2, the front and back sides of the detection seat 56 are both provided with a bamboo joint type coupling agent pipe 57 for spraying the coupling agent to the welding seam.

[0046] The basic principle of the application is described above in combination with the specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the application are only examples and cannot be considered as the must-have of each embodiment of the application. In addition, the specific details disclosed above are only for the purpose of example and for the purpose of understanding, and the above details do not limit the application to the must-use specific details.

[0047] The block diagram of the device, apparatus, equipment, system involved in the application is only an illustrative example and is not intended to require or imply that the connection, arrangement and configuration shown in the block diagram must be connected, arranged and configured. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged and configured in any way. Words such as "include", "contain", "have" and the like are open-ended words, which mean "include but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

Claims

1. An adaptive weld detection mechanism, comprising: The detection mechanism (5) comprises a universal unit (51) for fixing a detection seat (56), the universal unit (51) comprises a fixed rod (511) and a ball bearing (514) fixed at the end of the fixed rod (511), and a floating table (513) coaxially arranged with the fixed rod (511) is arranged on the ball bearing (514), the probe (563) is fixed on the floating table (513) through the detection seat (56) and rotates with the floating table (513), and the fixed rod (511) is driven by the telescopic end to drive the detection seat (56) to abut against the product (4) to be detected.

2. The self-adapting seam detection mechanism according to claim 1, wherein, A fixed platform is arranged on the rod body of the fixed rod (511), at least two groups of pen-shaped air cylinders (512) arranged in parallel with the fixed rod (511) are installed on the fixed platform, each pen-shaped air cylinder (512) is uniformly arranged around the fixed rod (511), and an elastic abutting force is applied to the floating table (513).

3. The self-adapting seam detection mechanism according to claim 2, wherein, A limiting rod (516) arranged in parallel with the fixed rod (511) is also installed on the fixed platform of the fixed rod (511), a limiting hole (5132) through which the limiting rod (516) passes is formed in the floating table (513), and the diameter of the limiting hole (5132) is greater than the diameter of the limiting rod (516).

4. The self-adapting seam detection mechanism according to any one of claims 1 to 3, characterized in that An installation hole (5131) through which the fixed rod (511) passes is formed at the shaft center of the floating table (513), and the diameter of the installation hole (5131) is greater than the diameter of the fixed rod (511); and the ball bearing (514) at the rod end of the fixed rod (511) is fixed on the table surface of the floating table (513) through a bearing seat (515).

5. The self-adapting seam detection mechanism according to any one of claims 1 to 3, characterized in that The probe (563) on the detection seat (56) is connected with a detection wedge (562), and a roller (561) is fixed on both sides of the probe (563) of the detection seat (56), the detection seat (56) rolls and travels along the direction of the weld of the product (4) to be detected through the roller (561), and a coupling agent pipe (57) for spraying a coupling agent to the weld area is arranged on both sides of the detection seat (56).

6. The self-adapting seam detection mechanism of claim 5, wherein, The coupling agent pipe (57) is a telescopic bamboo joint pipe.

7. The self-adapting seam detection mechanism according to any one of claims 1 to 3, characterized in that The detection mechanism (5) comprises an adjusting slide rail (53) arranged in the direction parallel to the fixed rod (511), the adjusting slide rail (53) is arranged on a fixed seat (52), a sliding seat (54) in sliding cooperation with the adjusting slide rail (53) is arranged on the adjusting slide rail (53), the universal unit (51) is fixed on the sliding seat (54), and a spring (55) is arranged between the fixed seat (52) and the sliding seat (54) in the direction parallel to the fixed rod (511).

8. The self-adapting seam detection mechanism of claim 7, wherein, In the direction of the weld detection, at least two groups of detection seats (56) are arranged, and the number of the adjusting slide rails (53) and the universal units (51) on the detection mechanism (5) corresponds to the number of the detection seats (56).

9. A girth weld inspection system employing an adaptive weld inspection mechanism as claimed in any one of claims 1 to 3, wherein, The detection mechanism (5) comprises a rotating platform (2) and a product (4) arranged coaxially with the rotating axis of the rotating platform (2), the product (4) is clamped and fixed by a tool clamp (3) and rotates synchronously with the rotating platform (2), a fixed table (1) for installing the detection mechanism (5) is arranged on the side of the rotating platform (2), and the detection seat (56) of the detection mechanism (5) rolls and travels along the circumferential weld of the product (4).

10. A girth weld inspection system as defined in claim 9, wherein, The fixed platform (1) comprises a lifting module (11) which is lifted along the vertical direction, and a telescopic module (12) is arranged on the lifting seat of the lifting module (11), the telescopic module (12) produces a telescopic action along the radial direction of the rotating platform (2), and the detection mechanism (5) is fixed on the telescopic seat of the telescopic module (12).

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