A fillet weld inspection device

Abstract

The utility model provides a kind of corner weld detection device, it is related to nondestructive testing technical field, including main body fixture, the positioning limit block of main body fixture, the top center of main body fixture is equipped with probe fixing groove, the inside of probe fixing groove is equipped with 0 ° angle phased array probe, the outside of 0 ° angle phased array probe is equipped with coupling flow guide groove, probe fixing groove and 0 ° angle phased array probe are used, 0 ° angle phased array probe is forcedly positioned by probe fixing groove, guaranteeing that sound beam is accurately 0 ° angle perpendicular incidence, 0 ° angle excitation wafer scanning strategy is realized, and the error of manual positioning of operator is avoided.

Description

Technical Field

[0001] This utility model relates to the field of non-destructive testing technology, and in particular to a fillet weld inspection device. Background Technology

[0002] According to Chinese Patent No. CN114894890A, a variable-angle weld defect detection device and method, and an array eddy current probe, for detecting fillet welds on test pieces, the device includes: a folded plate, an arc-shaped structure, a rotating shaft, screws and nuts, a flexible array eddy current probe, a spring, and a rear-end detection algorithm. The folded plate can be adjusted in angle. The angle of the folded plate is adjusted by the rotating shaft to make the folded plate fit against the base material of the weld, and then the folded plate is fixed with screws. A spring with a certain elasticity is installed on the top of the folded plate, and the flexible array eddy current probe is attached to the spring to ensure that the array eddy current probe fits against the surface of the fillet weld during the detection process. The array eddy current probe consists of eight channels and can cover the weld area during the detection process.

[0003] The aforementioned comparative documents and existing technologies have the following technical problems: The existing corrugated steel web structure is widely used in bridge engineering. Its longitudinal connection is usually bolted, supplemented by fillet welds. According to the provided drawings, the weld inspection area is limited by the M24 bolts and the inner structure of the box girder, which makes it difficult for traditional ultrasonic probes to effectively scan the side close to the bolts. On the side away from the bolts, the conventional sector scanning method has problems such as large blind zone, difficulty in positioning, and low near-surface defect recognition rate. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fillet weld inspection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fillet weld inspection device, comprising a main fixture, a positioning and limiting block of the main fixture, a probe fixing groove provided at the top center of the main fixture, a 0° angle phased array probe provided inside the probe fixing groove, and a coupling guide groove provided on the outside of the 0° angle phased array probe.

[0006] Preferably, the main clamp is made of lightweight, high-strength material, and the main clamp is rectangular in shape, with the top of the main clamp fitting against the surface of the corrugated steel web.

[0007] Preferably, the positioning and limiting block is L-shaped, with a limiting groove at the top inner side and a buckle at the bottom inner side, and the bottom of the positioning and limiting block is connected to the main fixture by screws.

[0008] Preferably, one side of the main clamp is provided with a slot, which cooperates with the buckle of the positioning and limiting block.

[0009] Preferably, the shape of the probe fixing groove matches the shape of the 0° angle phased array probe, and the probe fixing groove is perpendicular to the top surface of the main fixture.

[0010] Preferably, the bottom of the main clamp is provided with a magnetic fixing unit, which includes an embedding groove and a strong magnet.

[0011] Preferably, the magnetic fixing unit is located outside the probe fixing groove and the coupling guide groove, and the powerful magnet is connected to the main body fixture through the embedding groove.

[0012] Beneficial effects

[0013] In this utility model, a probe fixing groove and a 0° angle phased array probe are used. The probe fixing groove (2) forces the longitudinal wave phased array probe to be fixed as a crystal array strictly perpendicular to the surface of the plate. The longitudinal wave beam penetrates the plate thickness vertically, ensuring that the sound beam can cover all the base material parts below the weld fusion zone. Combined with the electronic scanning function of the phased array, the sound beam can be moved to scan, ensuring that the sound beam covers the bottom of the weld fusion zone, completely eliminating the acoustic blind zone of the traditional transverse wave fan scan in the near-surface and opposite-side areas, effectively detecting defects in all areas that need to be scanned when the fusion body cannot be covered and the location cannot be accurately determined, especially defects in the weld fusion zone and near-surface areas, ensuring that the weld quality meets the safety standards.

[0014] In this invention, a positioning limit block is used. The horizontal positioning limit block physically locks the upper limit groove and fits tightly against the edge of the workpiece, ensuring that the center line of the probe crystal is always located on the preset 0° scanning line. This eliminates the error caused by manual positioning by the operator. Since 0° vertical incidence is used, the depth of the defect can be directly calculated from the sound path reading of the ultrasonic instrument combined with the sound velocity. The horizontal distance is measured with the edge of the limit block as a precise reference point, overcoming the problem of difficult horizontal distance calculation caused by the complex sound beam angle when using traditional side-scan positioning. This makes the assessment and rework positioning of defects more accurate and reliable.

[0015] In this invention, a magnetic fixing unit and a couplant channel are used. The magnetic fixing unit, embedded in the bottom of the main fixture, provides a strong adsorption force, which firmly locks the fixture to the steel plate, preventing the probe from shifting due to pressure changes, operational vibrations, or couplant flow during the scanning process. The couplant channel helps to store and guide the couplant, ensuring a continuous and stable acoustic connection between the probe and the workpiece surface. This ensures stable acoustic energy transmission efficiency throughout the scanning process, avoids signal attenuation or loss due to poor coupling, and greatly improves the stability and repeatability of the detection results. Attached Figure Description

[0016] Figure 1 This is a frontal perspective view of the present invention;

[0017] Figure 2 This is a bottom-view perspective view of the present invention;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 This is a front view of the present invention;

[0020] Figure 5 This is a cross-sectional view of the present invention.

[0021] Legend:

[0022] 1. Main fixture; 101. Slot; 2. Positioning limit block; 201. Limiting groove; 202. Buckle; 3. Probe fixing groove; 4. 0° angle phased array probe; 5. Coupling guide groove; 6. Magnetic fixing unit. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0026] Reference Figure 1-4This utility model provides a fillet weld inspection device, including a main fixture 1, a positioning and limiting block 2 of the main fixture 1, a probe fixing groove 3 at the top center of the main fixture 1, a 0° angle phased array probe 4 inside the probe fixing groove 3, and a coupling guide groove 5 outside the 0° angle phased array probe 4. The main fixture 1 is made of lightweight and high-strength material and is rectangular in shape. The top of the main fixture 1 is attached to the surface of the corrugated steel web. The positioning and limiting block 2 is L-shaped, with a limiting groove 201 at the top inner side and a buckle 202 at the bottom inner side. The bottom of the positioning and limiting block 2 is connected to the main fixture 1 by screws. A slot 101 is provided on one side of the main fixture 1, which cooperates with the buckle 202 of the positioning and limiting block 2. The shape of the probe fixing groove 3 is aligned with the 0° angle phased array probe 4. The shape of the phased array probe 4 is matched, and the probe fixing groove 3 is perpendicular to the top surface of the main body clamp 1. The bottom of the main body clamp 1 is provided with a magnetic fixing unit 6, which includes an embedding groove and a strong magnet. The magnetic fixing unit 6 is located outside the probe fixing groove 3 and the coupling guide groove 5, and the strong magnet is connected to the main body clamp 1 through the embedding groove. Working principle: The operator places the main body clamp 1 with the 0° angle phased array probe 4 on the surface of the corrugated steel web plate away from the bolt. The lateral positioning limit block 2 is close to the edge of the weld. At this time, the 0° angle phased array probe 4 is located on the preset 0° scanning line. The magnetic fixing unit 6 immediately adheres to the steel plate, firmly locking the clamp and preventing lateral and longitudinal movement. Before placing the clamp, the coupling agent has been pre-injected into the coupling guide groove 5 or can be directly applied to the surface of the 0° angle phased array probe 4. With the probe fixing slot 3 tightly attached to the workpiece surface, and with the assistance of the guide channel, the 0° angle phased array probe 4 forms a continuous and stable coupling layer with the workpiece. Since the 0° angle phased array probe 4 is forcibly locked by the probe fixing slot 3, its crystal array is strictly perpendicular to the surface of the plate, achieving precise 0° incident. The phased array instrument, through electronic control, excites a 0° longitudinal wave sound beam, which can cover the entire area to be scanned. The positioning limit block 2 ensures that during the detection process, minor adjustments to the position of the 0° angle phased array probe 4 will not cause lateral deviation, ensuring the accuracy of the sound beam coverage area. When the defect echo is received, since the lateral starting position of the 0° angle phased array probe 4 is precisely positioned by the positioning limit block 2, combined with the sound path and depth information displayed by the instrument, the position and depth of the defect in the weld can be accurately calculated, overcoming the problem of difficult accurate horizontal positioning when traditional sector scanning is used for side scanning. Specific Implementation Example 2:

[0028] Reference Figure 1The device features a sealed reaction chamber made of corrosion-resistant and high-pressure-resistant quartz material to ensure the solution remains isolated from the external environment at high temperatures, maintaining its high electronic-grade purity. A microwave generation and focusing system provides uniform microwave energy to directly heat solution molecules, achieving rapid and uniform temperature rise. A precise temperature control and pressure relief unit uses external sensors to monitor the temperature and pressure within the chamber in real time, precisely controlling microwave power through a PID algorithm and equipped with an automatic inert gas pressure relief protection system. A condensation and solvent recovery device connects to a high-efficiency condenser at the top of the chamber to quickly recover the evaporated electronic-grade solvent. Condensation recovery avoids the introduction of impurities and improves material utilization. In the bottom crystallization zone, a temperature-controlled cold finger is set at the bottom of the chamber to precisely control the nucleation temperature gradient for crystallization and precipitation. The electronic-grade chemical solution is placed in a sealed chamber, and the microwave system rapidly and uniformly heats the solution, allowing the solvent to evaporate efficiently under a sealed high-pressure environment. The solution quickly reaches a supersaturated state, and the precise temperature control system maintains the concentration temperature of the main solution. Meanwhile, the bottom cold finger provides a small low-temperature zone to induce the target material to nucleate and precipitate in a specific temperature gradient, achieving high-purity, controllable crystallization.

[0029] In summary:

[0030] 1. By using the probe fixing slot 3 and the 0° angle phased array probe 4, the 0° angle phased array probe 4 is forcibly positioned by the probe fixing slot 3, ensuring that the sound beam is accurately incident vertically at a 0° angle, realizing the 0° angle excitation crystal scanning strategy, and avoiding the error of manual positioning by the operator;

[0031] 2. By using positioning and limiting block 2, the sound beam can cover the required weld fusion zone when used with 0° longitudinal wave scanning. Furthermore, the scanning center line of the 0° phased array probe 4 is always locked by the precise lateral positioning and limiting block 2, making the horizontal positioning of defects more accurate.

[0032] 3. The use of magnetic fixing unit 6 enables rapid fixation, which, combined with the single-point full coverage of the phased array, eliminates the need for tedious marking and probe movement, greatly improving on-site testing efficiency.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fillet weld inspection device, comprising a main fixture (1), characterized in that: The positioning limit block (2) of the main fixture (1) has a probe fixing groove (3) at the top center of the main fixture (1), a 0° angle phased array probe (4) is provided inside the probe fixing groove (3), and a coupling guide groove (5) is provided on the outside of the 0° angle phased array probe (4).

2. The fillet weld inspection device according to claim 1, characterized in that: The main clamp (1) is made of lightweight and high-strength material, and the main clamp (1) is rectangular in shape. The top of the main clamp (1) is attached to the surface of the corrugated steel web.

3. The fillet weld inspection device according to claim 1, characterized in that: The positioning limit block (2) is L-shaped. The top inner side of the positioning limit block (2) is provided with a limiting groove (201), and the bottom inner side of the positioning limit block (2) is provided with a buckle (202). The bottom of the positioning limit block (2) is connected to the main body clamp (1) by screws.

4. The fillet weld inspection device according to claim 1, characterized in that: The main clamp (1) has a slot (101) on one side, which is engaged with the buckle (202) of the positioning limit block (2).

5. The fillet weld inspection device according to claim 1, characterized in that: The shape of the probe fixing groove (3) matches the shape of the 0° angle phased array probe (4), and the probe fixing groove (3) is perpendicular to the top surface of the main body fixture (1).

6. The fillet weld inspection device according to claim 1, characterized in that: The bottom of the main clamp (1) is provided with a magnetic fixing unit (6), which includes an embedding groove and a strong magnet.

7. The fillet weld inspection device according to claim 6, characterized in that: The magnetic fixing unit (6) is located outside the probe fixing groove (3) and the coupling guide groove (5), and the strong magnet is connected to the main body fixture (1) through the embedding groove.

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