Ultrasonic testing device for austenitic stainless steel T-joints with calibration function

Abstract

The utility model discloses austenitic stainless steel T joint ultrasonic testing device with calibration function, specifically related to ultrasonic testing technical field, including installation frame, ultrasonic detector main part and detection probe, and ultrasonic detector main part is located inside the installation frame, and detection probe fixed mounting is at the bottom of ultrasonic detector main part, and the inside of installation frame is provided with extrusion subassembly, and extrusion subassembly includes two storage frame, a plurality of extrusion plate, a plurality of gasket, a plurality of telescopic link, a plurality of spring, first pivot, two second pivot and self -locking motor. The utility model discloses through the test block between two extrusion plates, through two extrusion plates and two gaskets extruding fixed test block, the bottom of detection probe and test block contact, through ultrasonic detector main part and detection probe to austenitic stainless steel T joint carries out the flaw detection, simple operation, and the sensitivity of detection probe is convenient for calibration.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic testing technology, and more specifically, to an ultrasonic testing device with austenitic stainless steel T-joint and calibration function. Background Technology

[0002] Austenitic stainless steel T-joints are welded structures made of austenitic stainless steel with a "T" shape. These joints are welded together by a vertical plate and a horizontal base plate. They are commonly used in applications requiring high strength and corrosion resistance, such as chemical equipment, pressure vessels, and pipeline systems. Internal defects in austenitic stainless steel T-joints can be detected using an ultrasonic flaw detector, ensuring the safety and reliability of the structure.

[0003] A search revealed that Chinese patent CN210243573U discloses a variable frequency automatic flaw detection device for joints, including a base, a motor on the bottom surface of the base, a first sprocket connected to the motor output shaft, a chain drive connection between the first sprocket and a second sprocket, a drive connection between the second sprocket and one end of the central shaft of the active idler roller, and a rotatable connection between the other end of the central shaft of the active idler roller and the base via a bearing and a bearing seat. A driven idler roller is also provided on the base. This utility model is fully automatic from brushing the coupling agent to detection, which greatly improves work efficiency, reduces the labor intensity of personnel, and saves enterprise costs.

[0004] When the aforementioned inspection and flaw detection device is used to inspect austenitic stainless steel T-joints, the inspection probe is brought into contact with the austenitic stainless steel T-joint, and the ultrasonic detector is used to inspect and detect flaws. However, it is inconvenient to calibrate the sensitivity of the inspection probe before inspection, and the failure to calibrate the probe sensitivity will result in the inability to identify minute defects. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides an ultrasonic testing device for austenitic stainless steel T-joints with calibration function, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultrasonic testing device for an austenitic stainless steel T-joint with calibration function, comprising a mounting frame, an ultrasonic detector body, and a testing probe. The ultrasonic detector body is located inside the mounting frame, and the testing probe is fixedly installed at the bottom of the ultrasonic detector body. An extrusion assembly is provided inside the mounting frame. The extrusion assembly includes two storage frames, multiple extrusion plates, multiple gaskets, multiple telescopic rods, multiple springs, a first rotating shaft, two second rotating shafts, and a self-locking motor. The multiple extrusion plates are respectively located inside the two storage frames, and one side of each extrusion plate is fixedly connected to multiple gaskets. The two ends of the multiple telescopic rods and multiple springs are respectively fixedly connected to the multiple extrusion plates and the two storage frames, and the multiple springs are respectively located outside the multiple telescopic rods. A moving assembly is provided on the ultrasonic detector body, and the moving assembly includes a stepper motor, a lead screw, a slide rod, and a connecting frame.

[0007] Furthermore, the two ends of the first rotating shaft are respectively fixedly connected to the two storage frames, and the first rotating shaft is movably connected to the mounting frame through bearings. The opposite ends of the two second rotating shafts are respectively fixedly connected to the two storage frames, and the opposite ends of the two second rotating shafts are movably connected to the mounting frame through bearings.

[0008] Furthermore, the self-locking motor is fixedly installed on one side of the mounting frame, and the output shaft end of the self-locking motor is fixedly connected to one of the second rotating shafts.

[0009] It can be seen that the above technical solution is designed to facilitate the rotation of the second rotating shaft.

[0010] Furthermore, the stepper motor is fixedly mounted on one side of the mounting frame, and the output shaft end of the stepper motor is fixedly connected to the lead screw.

[0011] It can be seen that the above technical solution is designed to facilitate the rotation of the lead screw.

[0012] Furthermore, both ends of the lead screw are movably connected to the mounting frame via bearings, and the lead screw is threadedly connected to the connecting frame. One end of the slide rod passes through the connecting frame and is fixedly connected to the mounting frame. The connecting frame is fixedly installed on the outside of the ultrasonic detector body.

[0013] It can be seen that the above technical solution is designed to facilitate the adjustment of the horizontal position of the detection probe.

[0014] Furthermore, a hydraulic cylinder is fixedly connected to the bottom end of the connecting frame, and a side plate is fixedly connected to the bottom end of the hydraulic cylinder, with one side of the side plate fixedly connected to the detection probe.

[0015] It can be seen that the above technical solution is designed to facilitate the adjustment of the height of the detection probe.

[0016] Furthermore, the top of the mounting frame is fixedly connected to two U-shaped plates and two alarm lights, with the two alarm lights located on the front side of the two U-shaped plates respectively. The bottom ends of the two U-shaped plates are fixedly connected to connecting rods, and the bottom ends of the two connecting rods are fixedly connected to first conductive blocks. A second conductive block is provided at the bottom of one of the first conductive blocks, and the bottom end of the second conductive block is fixedly connected to the ultrasonic detector body.

[0017] As can be seen from the above technical solution, the main body of the ultrasonic detector drives the second conductive block to move horizontally. When the second conductive block comes into contact with the first conductive block, the alarm light turns on red. At this time, the detection probe is located at the top center of the storage frame, and the detection probe is positioned.

[0018] The technical effects and advantages of this utility model are as follows: 1. This utility model uses two pressing plates that move in opposite directions to drive four springs to compress. Then, the test block is placed between the two pressing plates and the test block is pressed and fixed by the two pressing plates and two shims. The bottom end of the detection probe is in contact with the test block. The austenitic stainless steel T-shaped joint is tested by the ultrasonic detector body and the detection probe. The operation is simple and the sensitivity of the detection probe can be calibrated. 2. This utility model uses a stepper motor to drive a lead screw to rotate, thereby moving the ultrasonic detector body and the detection probe horizontally. It also activates a hydraulic cylinder, causing the piston rod on the hydraulic cylinder to extend and move the side plate and the detection probe downward. The positions of the ultrasonic detector body and the detection probe can be adjusted as needed. The structure is simple and has a wide range of applications. Attached Figure Description

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the assembly structure of the mounting frame and the first conductive block of this utility model; Figure 4 This is a schematic diagram of the extrusion assembly structure of this utility model; Figure 5This is a schematic diagram of the assembly structure of the ultrasonic detector body and the moving component of this utility model.

[0021] In the diagram: 1. Mounting frame; 2. Ultrasonic detector body; 3. Moving component; 4. Extrusion component; 5. U-shaped plate; 6. Connecting rod; 7. Alarm light; 8. First conductive block; 9. Second conductive block; 10. Detection probe; 301. Stepper motor; 302. Lead screw; 303. Slide rod; 304. Connecting frame; 305. Hydraulic cylinder; 306. Side plate; 401. Storage frame; 402. Extrusion plate; 403. Gasket; 404. Telescopic rod; 405. Spring; 406. First rotating shaft; 407. Second rotating shaft; 408. Self-locking motor. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Refer to the instruction manual appendix Figure 1-5 The ultrasonic testing device for austenitic stainless steel T-joints with calibration function in this embodiment includes a mounting frame 1, an ultrasonic detector body 2, and a testing probe 10. The ultrasonic detector body 2 is located inside the mounting frame 1, and the testing probe 10 is fixedly installed at the bottom end of the ultrasonic detector body 2. A pressing assembly 4 is provided inside the mounting frame 1. The pressing assembly 4 includes two storage frames 401, multiple pressing plates 402, multiple gaskets 403, multiple telescopic rods 404, multiple springs 405, a first rotating shaft 406, and two second rotating shafts 407. The ultrasonic detector body 2 is equipped with a self-locking motor 408, multiple extrusion plates 402 are located inside the two storage frames 401 respectively, and one side of the multiple extrusion plates 402 is fixedly connected to multiple gaskets 403 respectively. The two ends of multiple telescopic rods 404 and multiple springs 405 are fixedly connected to the multiple extrusion plates 402 and the two storage frames 401 respectively, and the multiple springs 405 are located on the outside of the multiple telescopic rods 404 respectively. The ultrasonic detector body 2 is equipped with a moving component 3, which includes a stepper motor 301, a lead screw 302, a slide bar 303 and a connecting frame 304.

[0024] Furthermore, the two ends of the first rotating shaft 406 are fixedly connected to the two storage frames 401 respectively, and the first rotating shaft 406 is movably connected to the mounting frame 1 through bearings. The two second rotating shafts 407 are fixedly connected to the two storage frames 401 respectively at their opposite ends, and are movably connected to the mounting frame 1 through bearings. The self-locking motor 408 is fixedly installed on one side of the mounting frame 1, and the output shaft end of the self-locking motor 408 is fixedly connected to one of the second rotating shafts 407.

[0025] Furthermore, the stepper motor 301 is fixedly installed on one side of the mounting frame 1, and the output shaft end of the stepper motor 301 is fixedly connected to the lead screw 302. Both ends of the lead screw 302 are movably connected to the mounting frame 1 through bearings, and the lead screw 302 is threadedly connected to the connecting frame 304. One end of the slide rod 303 passes through the connecting frame 304 and is fixedly connected to the mounting frame 1. The connecting frame 304 is fixedly installed on the outside of the ultrasonic detector body 2. A hydraulic cylinder 305 is fixedly connected to the bottom end of the connecting frame 304. A side plate 306 is fixedly connected to the bottom end of the hydraulic cylinder 305, and one side of the side plate 306 is fixedly connected to the detection probe 10.

[0026] Furthermore, two U-shaped plates 5 and two alarm lights 7 are fixedly connected to the top of the mounting frame 1, and the two alarm lights 7 are respectively located on the front side of the two U-shaped plates 5. A connecting rod 6 is fixedly connected to the bottom of each of the two U-shaped plates 5, and a first conductive block 8 is fixedly connected to the bottom of each of the two connecting rods 6. A second conductive block 9 is provided at the bottom of one of the first conductive blocks 8, and the bottom of the second conductive block 9 is fixedly connected to the ultrasonic detector body 2.

[0027] The system involves starting the stepper motor 301, which drives the lead screw 302 to rotate. Since the lead screw 302 is threadedly connected to the connecting frame 304, and the slide rod 303 restricts the rotation of the connecting frame 304, the lead screw 302 can drive the connecting frame 304 to move horizontally, thereby driving the ultrasonic detector body 2 and the detection probe 10 to move horizontally. The hydraulic cylinder 305 is then activated, and the piston rod on the hydraulic cylinder 305 extends, driving the side plate 306 and the detection probe 10 to move downwards. The positions of the ultrasonic detector body 2 and the detection probe 10 can be adjusted as needed. The system has a simple structure and a wide range of applications. At the same time, the ultrasonic detector body 2 drives the second conductive block 9 to move horizontally. When the second conductive block 9 contacts the first conductive block 8, the alarm light 7 illuminates red. At this time, the detection probe 10 is located at the top center of the storage frame 401, thus positioning the detection probe 10.

[0028] The usage method of this embodiment is as follows: In use, the two compression plates 402 are moved in opposite directions, which causes the four telescopic rods 404 to retract, thereby compressing the four springs 405. The test block is then placed between the two compression plates 402. Releasing the two compression plates 402 causes the four telescopic rods 404 to spring back, causing the two compression plates 402 and two gaskets 403 to move towards each other. The two compression plates 402 and two gaskets 403 compress and fix the test block, bringing the bottom of the detection probe 10 into contact with the test block. The gain knob on the ultrasonic detector body 2 is adjusted to make the echo amplitude reach 80% of the full screen. The gain value of the instrument at this point is the reference sensitivity. During testing, the gain needs to be increased based on this value. Using 6-12dB as the scanning sensitivity, the austenitic stainless steel T-joint is similarly placed in another storage frame 401. The austenitic stainless steel T-joint is then inspected using the ultrasonic detector body 2 and the detection probe 10. The self-locking motor 408 is started, which drives the two second rotating shafts 407 and the first rotating shaft 406 to rotate, thereby causing the two storage frames 401 and the austenitic stainless steel T-joint to rotate. This allows for the inspection of the bottom of the austenitic stainless steel T-joint. The operation is simple and facilitates the calibration of the sensitivity of the detection probe 10. It is worth noting that both the test block and the austenitic stainless steel T-joint are coated with coupling agent before testing.

[0029] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ultrasonic testing device for an austenitic stainless steel T-joint with calibration function, comprising a mounting frame (1), an ultrasonic detector body (2), and a testing probe (10), wherein the ultrasonic detector body (2) is located inside the mounting frame (1), and the testing probe (10) is fixedly mounted on the bottom end of the ultrasonic detector body (2), characterized in that: The mounting frame (1) is provided with a pressing assembly (4), which includes two storage frames (401), multiple pressing plates (402), multiple gaskets (403), multiple telescopic rods (404), multiple springs (405), a first rotating shaft (406), two second rotating shafts (407), and a self-locking motor (408). Multiple extrusion plates (402) are located inside two storage frames (401), and one side of each extrusion plate (402) is fixedly connected to multiple gaskets (403). The two ends of multiple telescopic rods (404) and multiple springs (405) are fixedly connected to multiple extrusion plates (402) and two storage frames (401), and multiple springs (405) are located outside multiple telescopic rods (404). A moving component (3) is provided on the ultrasonic detector body (2). The moving component (3) includes a stepper motor (301), a lead screw (302), a slide bar (303), and a connecting frame (304).

2. The ultrasonic testing device for austenitic stainless steel T-joints with calibration function according to claim 1, characterized in that: The two ends of the first rotating shaft (406) are fixedly connected to the two storage frames (401) respectively, and the first rotating shaft (406) is movably connected to the mounting frame (1) through bearings. The two second rotating shafts (407) are fixedly connected to the two storage frames (401) respectively at their opposite ends, and the two second rotating shafts (407) are movably connected to the mounting frame (1) through bearings at their opposite ends.

3. The ultrasonic testing device for austenitic stainless steel T-joints with calibration function according to claim 1, characterized in that: The self-locking motor (408) is fixedly installed on one side of the mounting frame (1), and the output shaft end of the self-locking motor (408) is fixedly connected to one of the second rotating shafts (407).

4. The ultrasonic testing device for austenitic stainless steel T-joints with calibration function according to claim 1, characterized in that: The stepper motor (301) is fixedly installed on one side of the mounting frame (1), and the output shaft end of the stepper motor (301) is fixedly connected to the lead screw (302).

5. The ultrasonic testing device for austenitic stainless steel T-joints with calibration function according to claim 1, characterized in that: Both ends of the lead screw (302) are connected to the mounting frame (1) by bearings, and the lead screw (302) is threadedly connected to the connecting frame (304). One end of the slide rod (303) passes through the connecting frame (304) and is fixedly connected to the mounting frame (1). The connecting frame (304) is fixedly installed on the outside of the ultrasonic detector body (2).

6. The ultrasonic testing device for austenitic stainless steel T-joints with calibration function according to claim 1, characterized in that: The bottom end of the connecting frame (304) is fixedly connected to a hydraulic cylinder (305), the bottom end of the hydraulic cylinder (305) is fixedly connected to a side plate (306), and one side of the side plate (306) is fixedly connected to the detection probe (10).

7. The ultrasonic testing device for austenitic stainless steel T-joints with calibration function according to claim 1, characterized in that: The top of the mounting frame (1) is fixedly connected to two U-shaped plates (5) and two alarm lights (7), and the two alarm lights (7) are located on the front side of the two U-shaped plates (5). The bottom of the two U-shaped plates (5) is fixedly connected to a connecting rod (6), and the bottom of the two connecting rods (6) is fixedly connected to a first conductive block (8). A second conductive block (9) is provided at the bottom of one of the first conductive blocks (8), and the bottom of the second conductive block (9) is fixedly connected to the ultrasonic detector body (2).

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