Coupling agent self-absorption wetting type ultrasonic probe

Abstract

The invention belongs to the technical field of ultrasonic non-destructive testing, and particularly relates to a coupling agent self-absorption wetting type ultrasonic probe. A coupling agent is stored in a storage cabin, during working, one end, extending out of a cabin body, of an acoustic emission mechanism abuts against a tested piece, and at the moment, the acoustic emission mechanism slides upwards in the cabin body; the coupling agent located in the cabin body enters the cavity and is in contact with the tested piece, so that self-absorption of the coupling agent on the premise of no driving is achieved, the sound emission mechanism and the tested piece are in a good coupling state due to the arrangement of the cavity, the problem that the thickness of the coupling agent is difficult to control due to manual smearing is solved, and the reliability of the coupling agent is improved. And meanwhile, the labor intensity of workers is reduced, and use is more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic nondestructive testing, and in particular relates to a coupling agent self-absorption wetting type ultrasonic probe. Background Art

[0002] Ultrasonic probes are key components for nondestructive testing and are widely used in health testing of major national engineering equipment such as aerospace equipment, deep-sea equipment, and nuclear power facilities. The method of directly contacting the ultrasonic probe with the parts for testing is a convenient means of on-site online testing. This contact detection method requires the application of a coupling agent between the surface to be tested and the ultrasonic probe to allow the ultrasonic wave to better penetrate into the interior of the tested part. At present, manual application is mainly used, and the thickness of the coupling agent is difficult to control, which affects the propagation characteristics of the ultrasonic signal, reduces the measurement accuracy of ultrasonic nondestructive testing, and is difficult to meet the technical requirements for reliable assessment of health status.

[0003] Therefore, a coupling agent self-absorption wetting type ultrasonic probe is proposed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a coupling agent self-absorption wetting type ultrasonic probe to solve the above problems.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A coupling agent self-absorption wetted ultrasonic probe comprises: a cabin body, the top of the cabin body is connected to a storage cabin, an acoustic emission mechanism is slidably connected in the storage cabin, the bottom end of the acoustic emission mechanism passes through the bottom end of the storage cabin, a cavity is formed at the bottom end of the acoustic emission mechanism, the cavity is connected to the inner cavity of the storage cabin, a reset mechanism is arranged in the storage cabin, the reset mechanism is transmission-connected to the acoustic emission mechanism, the acoustic emission mechanism is electrically connected to an electrical connection component, and the electrical connection component is arranged on the outer side wall of the storage cabin.

[0007] In the coupling agent self-absorption wetted ultrasonic probe of the present invention, the acoustic emission mechanism includes a damping block vertically slidably connected in the cabin, a first mounting groove is circumferentially opened at the outer edge of the damping block, a third sealing ring is arranged in the first mounting groove, the third sealing ring abuts against the inner side wall of the cabin, a second mounting cavity is opened at the bottom end of the damping block, a piezoelectric ceramic piece is fixedly connected in the second mounting cavity, the piezoelectric ceramic piece is electrically connected to the electrical connection assembly, a delay block is fixedly connected to the bottom end of the damping block, the bottom end of the delay block extends out of the cabin, the cavity is opened at the bottom end of the delay block, a third mounting cavity is circumferentially opened on the outer side wall of the delay block, a first sealing ring is arranged in the third mounting cavity, and the first sealing ring abuts against the inner side wall of the cabin.

[0008] In the coupling agent self-absorption wetting ultrasonic probe of the present invention, a plurality of second flow channels are circumferentially evenly spaced on the delay block, the bottom end of the second flow channel is connected to the cavity, the top end of the second flow channel is connected to the first flow channel, a plurality of the first flow channels are circumferentially evenly spaced on the damping block, the top end of the first flow channel passes through the damping block, and a first one-way valve is installed on the top end of the first flow channel.

[0009] In the coupling agent self-absorption wetted ultrasonic probe of the present invention, the resetting mechanism includes a guide shaft, the bottom end of the guide shaft is fixedly connected to the top end of the damping block, the damping block is coaxially arranged with the guide shaft, the outer side of the guide shaft is vertically slidably connected with a guide cylinder, the guide cylinder is fixedly connected to the top end of the cabin body, a connecting hole is opened on the outer side wall of the guide cylinder, the connecting hole is located at the top end of the guide cylinder, a spring is sleeved on the outer side of the guide cylinder, the top end of the spring abuts against the top end of the inner wall of the cabin body, and the bottom end of the spring abuts against the top end of the damping block.

[0010] In the coupling agent self-priming wetted ultrasonic probe of the present invention, an upper sealing cover is threadedly connected to the top of the cabin body, the top of the guide cylinder is fixedly connected to the upper sealing cover, a second sealing ring is arranged between the upper sealing cover and the cabin body, a plurality of third flow channels are opened on the upper sealing cover, the third flow channels connect the inner cavity of the cabin body and the storage cabin, a second one-way valve is installed at the top of the third flow channel, and the second one-way valve is located in the storage cabin.

[0011] In the coupling agent self-absorption wetted ultrasonic probe of the present invention, the storage compartment is arranged on the top surface of the upper sealing cover, and a clamping ring is sleeved on the outer side of the storage compartment. The clamping ring is located above the bottom skirt of the storage compartment, and the clamping ring abuts against the bottom skirt of the storage compartment. The clamping ring is fixedly connected to the upper sealing cover by bolts.

[0012] In the coupling agent self-absorption wetting type ultrasonic probe of the present invention, the top end of the storage compartment is connected with a one-way vent valve and an oil filling valve.

[0013] In the coupling agent self-absorption wetting ultrasonic probe of the present invention, the electrical connection component includes a power cord with one end electrically connected to the piezoelectric ceramic sheet, the power cord is passed through the damping block, a sealing rubber column is filled between the power cord and the damping block, and the other end of the power cord is electrically connected to a connector, and the connector is fixedly mounted on the outer wall of the cabin.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] In the present invention, the coupling agent is stored in a storage cabin. When working, one end of the acoustic emission mechanism extending out of the cabin body is abutted against the measured object. At this time, the acoustic emission mechanism slides upward in the cabin body, and the coupling agent in the cabin body enters the cavity and contacts the measured object, thereby realizing self-absorption of the coupling agent without driving. The setting of the cavity enables a good coupling state to be formed between the acoustic emission mechanism and the measured object, avoiding the problem of difficult control of the thickness of the coupling agent caused by manual application, and also reducing the labor intensity of the staff, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a left side view of the present invention;

[0019] Figure 3 It is a front view of the present invention;

[0020] Among them, 1. delay block; 2. first sealing ring; 3. damping block; 4. sealing ring; 5. one-way valve; 6. guide shaft; 7. guide cylinder; 8. spring; 9. upper sealing cover; 10. storage compartment; 11. one-way vent valve; 12. oil filling valve; 13. one-way valve; 14. clamping ring; 15. second sealing ring; 16. compartment body; 17. piezoelectric ceramic sheet; 18. bolt; 19. joint; 20. sealing rubber column; 21. power cord; 22. measured object; 23. connecting hole; 24. first flow channel; 25. second flow channel; 26. cavity. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Reference Figures 1 to 3The present invention discloses a coupling agent self-absorption wetting type ultrasonic probe, comprising: a cabin body 16, the top of the cabin body 16 is connected with a storage cabin 10, an acoustic emission mechanism is slidably connected in the storage cabin 10, the bottom end of the acoustic emission mechanism passes through the bottom end of the storage cabin 10, a cavity 26 is opened at the bottom end of the acoustic emission mechanism, the cavity 26 is connected with the inner cavity of the storage cabin 10, a reset mechanism is arranged in the storage cabin 10, the reset mechanism is transmission-connected with the acoustic emission mechanism, the acoustic emission mechanism is electrically connected with an electrical connection component, and the electrical connection component is arranged on the outer side wall of the storage cabin 10.

[0024] In an optional scheme, the acoustic emission mechanism includes a damping block 3 vertically slidably connected in the cabin 16, a first mounting groove is circumferentially opened at the outer edge of the damping block 3, a third sealing ring 4 is arranged in the first mounting groove, the third sealing ring 4 abuts against the inner wall of the cabin 16, a second mounting cavity is opened at the bottom end of the damping block 3, a piezoelectric ceramic piece 17 is fixedly connected in the second mounting cavity, the piezoelectric ceramic piece 17 is electrically connected to the electrical connection component, a delay block 1 is fixedly connected to the bottom end of the damping block 3, the bottom end of the delay block 1 extends out of the cabin 16, a cavity 26 is opened at the bottom end of the delay block 1, a third mounting cavity is circumferentially opened on the outer wall of the delay block 1, a first sealing ring 2 is arranged in the third mounting cavity, and the first sealing ring 2 abuts against the inner wall of the cabin 16.

[0025] In an optional solution, a plurality of second flow channels 25 are circumferentially evenly spaced apart on the delay block 1, the bottom end of the second flow channel 25 is connected to the cavity 26, the top end of the second flow channel 25 is connected to the first flow channel 24, a plurality of first flow channels 24 are circumferentially evenly spaced apart on the damping block 3, the top end of the first flow channel 24 passes through the damping block 3, and a first one-way valve 5 is installed on the top end of the first flow channel 24.

[0026] In an optional scheme, the reset mechanism includes a guide shaft 6, the bottom end of the guide shaft 6 is fixedly connected to the top of the damping block 3, the damping block 3 is coaxially arranged with the guide shaft 6, the outer side of the guide shaft 6 is vertically slidably connected with a guide cylinder 7, the guide cylinder 7 is fixedly connected to the top of the cabin body 16, a connecting hole 23 is opened on the outer wall of the guide cylinder 7, the connecting hole 23 is located at the top of the guide cylinder 7, a spring 8 is sleeved on the outer side of the guide cylinder 7, the top of the spring 8 abuts against the top of the inner wall of the cabin body 16, and the bottom end of the spring 8 abuts against the top of the damping block 3.

[0027] The spring 8 pushes the damping block 3 to move and reset in the cabin 16. The arrangement of the guide shaft 6 and the guide cylinder 7 prevents the damping block 3 from being deflected when moving and prevents the spring 8 from being bent.

[0028] In an optional scheme, the top end of the cabin body 16 is threadedly connected to the upper sealing cover 9, the top end of the guide cylinder 7 is fixedly connected to the upper sealing cover 9, a second sealing ring 15 is arranged between the upper sealing cover 9 and the cabin body 16, and a plurality of third flow channels are opened on the upper sealing cover 9, the third flow channels connect the inner cavity of the cabin body 16 and the storage cabin 10, and a second one-way valve 13 is installed at the top end of the third flow channel, and the second one-way valve 13 is located in the storage cabin 10.

[0029] The function of the second sealing ring 15 is to increase the sealing performance between the upper sealing cover 9 and the cabin body 16, and prevent debris from entering the cabin body 16. The first sealing ring 2 and the third sealing ring 4 have the same function.

[0030] In an optional solution, the storage compartment 10 is arranged on the top surface of the upper sealing cover 9, and a clamping ring 14 is provided on the outer side of the storage compartment 10. The clamping ring 14 is located above the bottom skirt of the storage compartment 10, and the clamping ring 14 abuts against the bottom skirt of the storage compartment 10. The clamping ring 14 is fixedly connected to the upper sealing cover 9 by bolts 18.

[0031] The clamping ring 14 clamps the bottom skirt of the storage compartment 10 , and the clamping ring 14 is fixedly connected to the upper sealing cover 9 via bolts 18 , thereby fixing the storage compartment 10 to the upper sealing cover 9 .

[0032] In an optional solution, the top end of the storage compartment 10 is connected to a one-way vent valve 11 and an oil filling valve 12 .

[0033] In an optional solution, the electrical connection component includes a power cord 21 having one end electrically connected to the piezoelectric ceramic sheet 17, the power cord 21 is passed through the damping block 3, a sealing rubber column 20 is filled between the power cord 21 and the damping block 3, and the other end of the power cord 21 is electrically connected to a connector 19, which is fixedly mounted on the outer wall of the cabin 16.

[0034] The piezoelectric ceramic piece 17 is powered by the connector 19 , and a sealing rubber column 20 is filled between the power line 21 and the damping block 3 , so as to prevent the coupling agent from entering the second mounting cavity and damaging the piezoelectric ceramic piece 17 .

[0035] Usage process:

[0036] The delay block 1 is brought into contact with the measured object 22. At this time, a relatively closed space is formed between the cavity 26 and the measured object 22. The cabin 16 is continuously pressed downward. At this time, the delay block 1 and the damping block 3 slide together into the cabin 16. The first sealing ring 2 and the third sealing ring 4 provide good sealing performance, thereby preventing the coupling agent from overflowing through the gap between the delay block 1 and the damping block 3 and the cabin 16.

[0037] As the delay block 1 and the damping block 3 slide together into the cabin 16, the coupling agent inside the cabin 16 flows into the first flow channel 24 through the first one-way valve 5 under the action of pressure, and flows into the cavity 26 after passing through the second flow channel 25 and fills the cavity 26. In this way, the uniformity of the thickness of the coupling agent is ensured, and the problem of uneven thickness of the coupling agent affecting the propagation characteristics of the ultrasonic signal and reducing the measurement accuracy of the ultrasonic non-destructive testing is avoided;

[0038] After the detection is completed, the test piece 22 is separated from the delay block 1. At this time, the spring 8 pushes the damping block 3 to move down and reset. The setting of the guide shaft 6 and the guide cylinder 7 prevents the damping block 3 from being deflected during movement and prevents the spring 8 from bending. The damping block 3 moves down and resets, forming a negative pressure in the cabin 16, so that the coupling agent in the storage cabin 10 is sucked into the cabin 16 through the second one-way valve 13, the coupling agent is replenished in the cabin 16, and the coupling agent is injected into the storage cabin 10 through the oil filling valve 12. The function of the one-way vent valve 11 is to ventilate the storage cabin 10 to avoid negative pressure in the storage cabin 10, which affects the replenishment of coupling agent in the cabin 16.

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A coupling agent self-absorption wetting type ultrasonic probe, characterized in that: include: A cabin body (16), the top of which is connected to a storage cabin (10), a sound emitting mechanism is slidably connected inside the storage cabin (10), the bottom end of the sound emitting mechanism passes through the bottom end of the storage cabin (10), a cavity (26) is provided at the bottom end of the sound emitting mechanism, the cavity (26) is connected to the inner cavity of the storage cabin (10), a reset mechanism is arranged inside the storage cabin (10), the reset mechanism is transmission-connected to the sound emitting mechanism, the sound emitting mechanism is electrically connected to an electrical connection component, and the electrical connection component is arranged on the outer wall of the storage cabin (10).

2. The coupling agent self-absorption wetting type ultrasonic probe according to claim 1, characterized in that: The acoustic emission mechanism comprises a damping block (3) vertically slidably connected in the cabin (16); a first mounting groove is circumferentially provided at the outer edge of the damping block (3); a third sealing ring (4) is arranged in the first mounting groove; the third sealing ring (4) abuts against the inner wall of the cabin (16); a second mounting cavity is provided at the bottom end of the damping block (3); a piezoelectric ceramic sheet (17) is fixedly connected in the second mounting cavity; the piezoelectric ceramic sheet (17) is electrically connected to the electrical connection component; a delay block (1) is fixedly connected to the bottom end of the damping block (3); the bottom end of the delay block (1) protrudes out of the cabin (16); the cavity (26) is provided at the bottom end of the delay block (1); a third mounting cavity is circumferentially provided on the outer wall of the delay block (1); a first sealing ring (2) is arranged in the third mounting cavity; the first sealing ring (2) abuts against the inner wall of the cabin (16).

3. The coupling agent self-absorption wetting type ultrasonic probe according to claim 2, characterized in that: A plurality of second flow channels (25) are circumferentially evenly spaced on the delay block (1); the bottom end of the second flow channel (25) is connected to the cavity (26); the top end of the second flow channel (25) is connected to the first flow channel (24); a plurality of the first flow channels (24) are circumferentially evenly spaced on the damping block (3); the top end of the first flow channel (24) passes through the damping block (3); and a first one-way valve (5) is installed at the top end of the first flow channel (24).

4. The coupling agent self-absorption wetting type ultrasonic probe according to claim 2, characterized in that: The reset mechanism comprises a guide shaft (6), the bottom end of the guide shaft (6) is fixedly connected to the top end of the damping block (3), the damping block (3) and the guide shaft (6) are coaxially arranged, the outer side of the guide shaft (6) is vertically slidably connected with a guide cylinder (7), the guide cylinder (7) is fixedly connected to the top end of the cabin body (16), a connecting hole (23) is opened on the outer wall of the guide cylinder (7), the connecting hole (23) is located at the top end of the guide cylinder (7), a spring (8) is sleeved on the outer side of the guide cylinder (7), the top end of the spring (8) abuts against the top end of the inner wall of the cabin body (16), and the bottom end of the spring (8) abuts against the top end of the damping block (3).

5. The coupling agent self-absorption wetting type ultrasonic probe according to claim 4, characterized in that: The top end of the cabin body (16) is threadedly connected to an upper sealing cover (9), the top end of the guide cylinder (7) is fixedly connected to the upper sealing cover (9), a second sealing ring (15) is arranged between the upper sealing cover (9) and the cabin body (16), a plurality of third flow channels are opened on the upper sealing cover (9), the third flow channels are connected to the inner cavity of the cabin body (16) and the storage cabin (10), a second one-way valve (13) is installed at the top end of the third flow channel, and the second one-way valve (13) is located in the storage cabin (10).

6. The coupling agent self-absorption wetting type ultrasonic probe according to claim 5, characterized in that: The storage compartment (10) is arranged on the top surface of the upper sealing cover (9), and a clamping ring (14) is sleeved on the outer side of the storage compartment (10). The clamping ring (14) is located above the bottom skirt of the storage compartment (10), and the clamping ring (14) abuts against the bottom skirt of the storage compartment (10). The clamping ring (14) is fixedly connected to the upper sealing cover (9) by bolts (18).

7. The coupling agent self-absorption wetting type ultrasonic probe according to claim 1, characterized in that: The top end of the storage compartment (10) is connected to a one-way vent valve (11) and an oil filling valve (12).

8. The coupling agent self-absorption wetting type ultrasonic probe according to claim 2, characterized in that: The electrical connection assembly includes a power cord (21) having one end electrically connected to the piezoelectric ceramic sheet (17); the power cord (21) is passed through the damping block (3); a sealing rubber column (20) is filled between the power cord (21) and the damping block (3); the other end of the power cord (21) is electrically connected to a connector (19); and the connector (19) is fixedly mounted on the outer wall of the cabin (16).

Images