Ultrasonic transduction device for TOFD detection of special large-wall-thickness workpiece

Abstract

The utility model relates to the field of TOFD ultrasonic flaw detection, in particular to an ultrasonic transduction device for TOFD detection of special large-wall-thickness workpieces, which comprises an upper pressing piece, an automatic detection mechanism is arranged on the outer side of the upper pressing piece and comprises a fixed shell fixedly connected to the outer side wall of the upper pressing piece, and a second connecting block is fixedly connected to the surface of the front end of the fixed shell. A first connecting block is fixedly connected to the surface of the rear end of the fixing shell, traction ropes are fixedly connected to the top ends of the first connecting block and the second connecting block, a fixing block is arranged above the first connecting block, a positioning block is fixedly connected to the bottom end of the fixing block, two sets of connecting plates are fixedly connected to the top end of the positioning block, and electric rotating shafts are installed on the inner side walls of the connecting plates. The electric rotating shafts are rotationally connected to the two ends of the fixing blocks, and the outer side walls of the electric rotating shafts are wrapped by the traction ropes. According to the utility model, the distance between the fixed shell and the large-sized workpiece is kept, so that the ultrasonic detection of the large-wall-thickness workpiece is realized, and the safety problem caused by manual detection is reduced.

Description

Technical Field

[0001] The utility model relates to the field of TOFD ultrasonic flaw detection, in particular to an ultrasonic transducer device for TOFD detection of special thick-walled workpieces. Background Art

[0002] In terms of ultrasonic nondestructive testing technology, the frequency of commonly used ultrasonic probes is relatively low, many of which are within 10MHz. Most of them are single probes, and some probes are phased array probes. The design of commonly used ultrasonic phased array probes is based on the Huygens principle. The probe has array elements arranged in one dimension in the azimuth direction. Each array element is independent of each other. Each array element is excited according to a certain electronic delay to form a new ultrasonic array. By applying different electronic delays, the ultrasonic beam will be deflected to meet various testing needs.

[0003] After searching, the patent document with publication number CN220027662U proposes an ultrasonic transducer: the utility model discloses an ultrasonic transducer with a high-efficiency shock-absorbing module, including an upper pressure piece, a first piezoelectric ceramic sheet, a second piezoelectric ceramic sheet, a third piezoelectric ceramic sheet and a fourth piezoelectric ceramic sheet, a positive electrode sheet is installed on the left side of the second piezoelectric ceramic sheet and the third piezoelectric ceramic sheet, and a second circular groove is provided on the upper surface of the second piezoelectric ceramic sheet and the third piezoelectric ceramic sheet. The ultrasonic transducer with a high-efficiency shock-absorbing module is provided with a first shock-absorbing gasket and a second shock-absorbing gasket, so that when the ultrasonic transducer vibrates during operation, the first shock-absorbing gasket plays a protective role on the upper surface of the first piezoelectric ceramic sheet, so that the upper surface of the first piezoelectric ceramic sheet will not be damaged by the impact of the upper pressure piece, and the second shock-absorbing gasket plays a protective role on the lower surface of the fourth piezoelectric ceramic sheet, so that the lower surface of the fourth piezoelectric ceramic sheet will not be damaged by the impact of the lower pressure piece.

[0004] This technical solution still relies on manual inspection for the inspection of large pressure-bearing equipment, and scaffolding needs to be set up during inspection. This not only has a large workload, low inspection efficiency, long operation cycle and high cost, but is also prone to personal safety accidents and is difficult to meet work needs.

[0005] Therefore, it is necessary to invent an ultrasonic transducer device for TOFD detection of special thick-walled workpieces to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an ultrasonic transducer device for TOFD detection of special thick-walled workpieces, which realizes automatic detection of large workpieces through the cooperation of an upper pressure piece and an automatic detection mechanism, so as to solve the problem that scaffolding is needed during detection in the prior art, which not only has a large workload, low detection efficiency, long operation cycle and high cost, but also is prone to personal safety accidents and is difficult to meet work needs.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ultrasonic transducer device for TOFD detection of special thick-walled workpieces, comprising an upper pressure piece, an automatic detection mechanism is arranged on the outer side of the upper pressure piece, the automatic detection mechanism comprises a fixed shell fixedly connected to the outer side wall of the upper pressure piece, a connecting block 2 is fixedly connected to the front end surface of the fixed shell, a connecting block 1 is fixedly connected to the rear end surface of the fixed shell, the tops of the connecting block 1 and the connecting block 2 are both fixedly connected to a traction rope, a fixed block is arranged above the connecting block 1, a positioning block is fixedly connected to the bottom end of the fixed block, two groups of connecting plates are fixedly connected to the top of the positioning block, and an electric rotating shaft is installed on the inner side wall of the connecting plate, the electric rotating shaft is rotatably connected to the two ends of the fixed block, the outer side wall of the electric rotating shaft is wrapped by the traction rope, and the traction rope is driven to move by the rotation of the electric rotating shaft, thereby driving the fixed shell to rise and fall.

[0008] Preferably, two groups of adsorption magnetic wheels are installed at the front end of the fixed shell, and the outer side walls of the adsorption magnetic wheels are engraved with patterns, so that the upper pressing piece maintains a distance through the adsorption magnetic wheels and increases friction through the patterns.

[0009] Preferably, a large workpiece is provided on one side of the upper pressing member, and the fixing block is installed on the top of the large workpiece, so as to fix the position of the automatic detection mechanism.

[0010] Preferably, a mounting groove is provided on the top of the fixing block, and a weight-increasing block is installed inside the mounting groove. The weight increase of the weight-increasing block is utilized to improve the stability of the fixing block, and the two can be carried in batches through the mounting groove to improve convenience.

[0011] Preferably, one end of the upper pressing piece is fixedly connected to a lower pressing block, and the lower pressing block is fixedly connected to the inner side wall of the fixed shell, and the lower pressing block is driven to rise and fall by the fixed shell to perform detection work.

[0012] Preferably, the inner side wall of the lower pressing block is fixedly connected to a first piezoelectric ceramic, the inner side wall of the lower pressing block is fixedly connected to a second piezoelectric ceramic, and the inner side wall of the lower pressing block is fixedly connected to a third piezoelectric ceramic, and electricity is converted into ultrasonic waves through the vibration of the first piezoelectric ceramic, the second piezoelectric ceramic, and the third piezoelectric ceramic.

[0013] Preferably, a first buffer layer is fixedly connected between the first piezoelectric ceramic and the second piezoelectric ceramic, and a second buffer layer is fixedly connected between the second piezoelectric ceramic and the third piezoelectric ceramic, so that the first buffer layer and the second buffer layer cooperate to reduce damage caused by vibration of the first piezoelectric ceramic, the second piezoelectric ceramic and the third piezoelectric ceramic.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. Through the cooperation of the upper pressure piece and the automatic detection mechanism, the electric shaft is started to drive the traction rope to rise and fall, so that the fixed shell slides along the surface of the large workpiece to complete the detection of the large workpiece. At the same time, the rotation and adsorption function of the adsorption magnetic wheel is used to keep the fixed shell away from the large workpiece, so as to realize ultrasonic detection of thick wall workpieces and reduce the safety problems caused by manual detection;

[0016] 2. By coordinating the second buffer layer, the first piezoelectric ceramic, the second piezoelectric ceramic and other parts and utilizing the characteristics of the first buffer layer and the second buffer layer, the wear caused by the vibration of the first piezoelectric ceramic, the second piezoelectric ceramic and the third piezoelectric ceramic is reduced, thereby increasing the service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the fixed housing structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the upper pressing piece of the utility model;

[0021] Figure 4 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0022] Description of reference numerals:

[0023] 1. Upper pressure piece; 2. Automatic detection mechanism; 201. Fixed shell; 202. Connection block one; 203. Adsorption magnetic wheel; 204. Fixed block; 205. Electric shaft; 206. Positioning block; 207. Connection plate; 208. Connection block two; 3. Large workpiece; 4. Lower pressure block; 5. First buffer layer; 6. Second buffer layer; 7. First piezoelectric ceramic; 8. Second piezoelectric ceramic; 9. Third piezoelectric ceramic; 10. Weight block; 11. Installation groove. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model provides Figure 1-4The ultrasonic transducer device for TOFD detection of special thick-walled workpieces shown in the figure comprises an upper pressing piece 1, an automatic detection mechanism 2 is arranged on the outer side of the upper pressing piece 1, and the automatic detection mechanism 2 comprises a fixed shell 201 fixedly connected to the outer wall of the upper pressing piece 1, a connecting block 208 is fixedly connected to the front end surface of the fixed shell 201, and a connecting block 1 202 is fixedly connected to the rear end surface of the fixed shell 201, and the tops of the connecting block 1 202 and the connecting block 2 208 are fixedly connected to traction ropes, and the two sets of traction ropes are connected to each other so that they can be When pulling, the upper pressure piece 1 can be driven to move in a stable posture. A fixed block 204 is arranged above the connecting block 1 202, and a positioning block 206 is fixedly connected to the bottom end of the fixed block 204. A large workpiece 3 is arranged on one side of the upper pressure piece 1, and the fixed block 204 is installed on the top of the large workpiece 3, so as to fix the position of the automatic detection mechanism 2. Two sets of connecting plates 207 are fixedly connected to the top of the positioning block 206, and an electric rotating shaft 205 is installed on the inner side wall of the connecting plate 207. The electric rotating shaft 205 is rotatably connected to the fixed block 20 The two ends of the fixed housing 201 are provided with a mounting groove 11, and a weight-added block 10 is installed inside the mounting groove 11. The weight-added block 10 is used to increase the weight of the fixed housing 201. The stability of the block 204 is enhanced, and the two are carried in batches through the mounting groove 11 to improve convenience. Through the cooperation of the upper pressure piece 1 and the automatic detection mechanism 2, the electric shaft 205 is started to drive the traction rope to rise and fall, so that the fixed shell 201 slides along the surface of the large workpiece 3 to complete the detection of the large workpiece 3. At the same time, the rotation and adsorption function of the adsorption magnetic wheel 203 is utilized to make the fixed shell 201 maintain the distance between it and the large workpiece 3, thereby realizing ultrasonic detection of thick-walled workpieces to reduce safety issues caused by manual detection.

[0026] Refer to the instruction manual Figure 1-4 The top of the fixed block 204 is provided with an installation slot 11, and a weight-increasing block 10 is installed inside the installation slot 11. The weight-increasing block 10 is used to increase the stability of the fixed block 204, and the two can be carried in batches through the installation slot 11 to improve convenience.

[0027] One end of the upper pressing member 1 is fixedly connected to a lower pressing block 4, which is fixedly connected to the inner wall of the fixed housing 201. The fixed housing 201 drives the lower pressing block 4 to rise and fall to perform the detection work.

[0028] The inner wall of the lower pressing block 4 is fixedly connected with the first piezoelectric ceramic 7, the inner wall of the lower pressing block 4 is fixedly connected with the second piezoelectric ceramic 8, and the inner wall of the lower pressing block 4 is fixedly connected with the third piezoelectric ceramic 9. Electricity is converted into ultrasonic waves through the vibration of the first piezoelectric ceramic 7, the second piezoelectric ceramic 8, and the third piezoelectric ceramic 9. A first buffer layer 5 is fixedly connected between the first piezoelectric ceramic 7 and the second piezoelectric ceramic 8, and a second buffer layer 6 is fixedly connected between the second piezoelectric ceramic 8 and the third piezoelectric ceramic 9. The cooperation of the first buffer layer 5 and the second buffer layer 6 reduces the damage caused by the vibration of the first piezoelectric ceramic 7, the second piezoelectric ceramic 8, and the third piezoelectric ceramic 9. The cooperation of the second buffer layer 6, the first piezoelectric ceramic 7, the second piezoelectric ceramic 8, and the third piezoelectric ceramic 9 and other parts is used, and the characteristics of the first buffer layer 5 and the second buffer layer 6 are used to reduce the wear caused by the vibration of the first piezoelectric ceramic 7, the second piezoelectric ceramic 8, and the third piezoelectric ceramic 9, thereby improving the service life of the structure.

[0029] How this utility works:

[0030] Refer to the instruction manual Figure 1-4 When it is necessary to detect a large and thick workpiece, first place the fixed block 204 on the top of the large workpiece 3, and fix it to the surface of the large workpiece 3 by glue or bolts, then put the weight block 10 into the installation groove 11 to ensure the stability of the center of gravity, then fix the traction rope on the surface of the electric shaft 205 to the top of the connecting block 208 and the connecting block 1 202 respectively, and make the adsorption magnetic wheel 203 contact the side of the large workpiece 3, finally start the electric shaft 205 to drive the traction rope to rise and fall, so that the fixed shell 201 slides along the surface of the large workpiece 3 to complete the detection of the large workpiece 3, and at the same time By utilizing the rotation and adsorption function of the adsorption magnetic wheel 203, the fixed housing 201 maintains a distance from the large workpiece 3, thereby realizing ultrasonic detection of thick-walled workpieces to reduce safety issues caused by manual detection. During the sliding of the fixed housing 201, the upper pressing piece 1 and the lower pressing block 4 inside it convert electricity into ultrasonic waves through the vibration of the first piezoelectric ceramic 7, the second piezoelectric ceramic 8, and the third piezoelectric ceramic 9. The characteristics of the first buffer layer 5 and the second buffer layer 6 are utilized to reduce the wear caused by the vibration of the first piezoelectric ceramic 7, the second piezoelectric ceramic 8, and the third piezoelectric ceramic 9, thereby increasing the service life of the structure.

[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An ultrasonic transducer device for TOFD inspection of special thick-walled workpieces, comprising an upper pressing piece (1), characterized in that: An automatic detection mechanism (2) is arranged on the outer side of the upper pressure piece (1), and the automatic detection mechanism (2) comprises a fixed shell (201) fixedly connected to the outer side wall of the upper pressure piece (1), a front end surface of the fixed shell (201) is fixedly connected to a second connection block (208), a rear end surface of the fixed shell (201) is fixedly connected to a first connection block (202), and the top ends of the first connection block (202) and the second connection block (208) are fixedly connected to a traction rope. A fixed block (204) is arranged above the connecting block 1 (202), a positioning block (206) is fixedly connected to the bottom end of the fixed block (204), two groups of connecting plates (207) are fixedly connected to the top end of the positioning block (206), and an electric rotating shaft (205) is installed on the inner side wall of the connecting plate (207), the electric rotating shaft (205) is rotatably connected to the two ends of the fixed block (204), and the outer side wall of the electric rotating shaft (205) is wrapped by a traction rope.

2. The ultrasonic transducer device for TOFD detection of special thick-walled workpieces according to claim 1, characterized in that: Two groups of adsorption magnetic wheels (203) are installed at the front end of the fixed shell (201), and patterns are engraved on the outer side walls of the adsorption magnetic wheels (203).

3. The ultrasonic transducer device for TOFD detection of special thick-walled workpieces according to claim 1, characterized in that: A large workpiece (3) is provided on one side of the upper pressing piece (1), and the fixing block (204) is installed on the top of the large workpiece (3).

4. The ultrasonic transducer device for TOFD detection of special thick-walled workpieces according to claim 1, characterized in that: The top of the fixing block (204) is provided with a mounting groove (11), and a weight-increasing block (10) is installed inside the mounting groove (11).

5. The ultrasonic transducer device for TOFD detection of special thick-walled workpieces according to claim 1, characterized in that: One end of the upper pressing piece (1) is fixedly connected to a lower pressing block (4), and the lower pressing block (4) is fixedly connected to the inner side wall of the fixed shell (201).

6. The ultrasonic transducer device for TOFD detection of special thick-walled workpieces according to claim 5, characterized in that: The inner side wall of the lower pressing block (4) is fixedly connected to a first piezoelectric ceramic (7), the inner side wall of the lower pressing block (4) is fixedly connected to a second piezoelectric ceramic (8), and the inner side wall of the lower pressing block (4) is fixedly connected to a third piezoelectric ceramic (9).

7. The ultrasonic transducer device for TOFD detection of special thick-walled workpieces according to claim 6, characterized in that: A first buffer layer (5) is fixedly connected between the first piezoelectric ceramic (7) and the second piezoelectric ceramic (8), and a second buffer layer (6) is fixedly connected between the second piezoelectric ceramic (8) and the third piezoelectric ceramic (9).

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