Device for Measuring Sound Axis Perpendicularity of Water Immersion Ultrasonic Probe and Its Usage Method

Abstract

The present invention discloses a device for measuring the perpendicularity of the acoustic axis of a water-immersion ultrasonic probe and its usage method, which relates to the technical field of water-immersion detection. The device for measuring the perpendicularity of the acoustic axis of a water-immersion ultrasonic probe includes a cup cylinder, a cover plate, an ultrasonic probe, and a spherical target; the cup cylinder is filled with coupling water; the cover plate is rotatably arranged at the top of the cup cylinder; the ultrasonic probe is arranged vertically and connected to the cover plate, and one end of the ultrasonic probe extends into the cup cylinder and is immersed in the coupling water; the spherical target is movably arranged in the cup cylinder, and the moving direction of the spherical target is horizontal, and it can reliably measure the perpendicularity of the main acoustic axis of the water-immersion ultrasonic probe.

Description

Technical Field

[0001] The present invention relates to the technical field of water immersion detection, and more particularly, to a device for measuring the verticality of the acoustic axis of a water immersion ultrasonic probe and a method for using the same. Background Art

[0002] Before the special steel round bar products leave the factory, they need to undergo strict quality inspections. For high-quality steel grades represented by bearing steel, high requirements are imposed on internal inclusion particles and purity. Based on this, the water immersion ultrasonic detection technology and equipment are developed to detect inclusions in steel and evaluate the quality of steel. The detection accuracy and scanning accuracy of the water immersion ultrasonic equipment need to meet very high requirements. Correspondingly, higher requirements are imposed on the scanning motion control of the equipment, the performance of the ultrasonic instrument, the performance of the probe, and the environmental conditions. As an important component of the water immersion detection system, the performance of the ultrasonic probe has a significant impact on the detection results.

[0003] At present, there is no reliable device that can measure the verticality of the main acoustic axis of a water immersion ultrasonic probe. Summary of the Invention

[0004] An object of the present invention is to provide a device for measuring the verticality of the acoustic axis of a water immersion ultrasonic probe, which can reliably measure the verticality of the main acoustic axis of the water immersion ultrasonic probe.

[0005] Another object of the present invention is to provide a method for using a device for measuring the verticality of the acoustic axis of a water immersion ultrasonic probe, which can relatively reliably measure the verticality of the main acoustic axis of the water immersion ultrasonic probe.

[0006] The present invention provides a device for measuring the verticality of the acoustic axis of a water immersion ultrasonic probe, including a cup cylinder, a cover plate, an ultrasonic probe, and a spherical target;

[0007] The cup cylinder is filled with coupling water;

[0008] The cover plate is rotatably arranged on the top of the cup cylinder;

[0009] The ultrasonic probe is arranged vertically and connected to the cover plate. One end of the ultrasonic probe extends into the cup cylinder and is immersed in the coupling water;

[0010] The spherical target is movably arranged in the cup cylinder, and the moving direction of the spherical target is horizontal.

[0011] Optionally, a sleeve is arranged on the cover plate. A first conical surface with a gradually decreasing diameter from top to bottom is arranged on the inner wall of the sleeve. A C-shaped wedge is arranged in the sleeve. A second conical surface with a gradually decreasing diameter from top to bottom is arranged on the outer wall of the C-shaped wedge. The first conical surface cooperates with the second conical surface, and the ultrasonic probe passes through the C-shaped wedge.

[0012] Optionally, an end cap is provided on the sleeve. The end cap is in threaded engagement with the sleeve. The end cap is sleeved on the ultrasonic probe and is used to press down the C-shaped wedge so that the inside of the C-shaped wedge shrinks and clamps the ultrasonic probe.

[0013] Optionally, the end cap includes a top plate and a side plate connected to each other. The side plate is in threaded engagement with the sleeve. A circular hole is provided at the center of the top plate. The ultrasonic probe passes through the circular hole. The diameter of the circular hole is smaller than the outer diameter of the top end of the C-shaped wedge and larger than the diameter of the ultrasonic probe.

[0014] Optionally, it further includes spherical balls. A convex ring is provided at the top of the cup-shaped cylinder. A first annular groove is provided at the top of the convex ring. A second annular groove is provided at the bottom of the cover plate. The first annular groove and the second annular groove are arranged opposite to each other. At least part of the spherical balls are arranged in the first annular groove and at least part of the spherical balls are arranged in the second annular groove.

[0015] Optionally, an annular rib is provided at the top of the convex ring. The outer side wall of the cover plate is in contact with the inner side wall of the annular rib.

[0016] Optionally, the ball target includes a ball bead and a base. The ball bead is arranged on the base. The base is movably arranged in the cup-shaped cylinder.

[0017] Optionally, the cup-shaped cylinder is a cylindrical tube. The ultrasonic probe is directed at the center of the cylindrical tube.

[0018] Optionally, a cross scale is provided on the inner bottom wall of the cup-shaped cylinder. The center of the cross scale is the center of the circle of the cup-shaped cylinder.

[0019] The present invention also provides a usage method of a device for measuring the verticality of the acoustic axis of a water-immersion ultrasonic probe, which is applied to the device for measuring the verticality of the acoustic axis of the water-immersion ultrasonic probe described above. The usage method includes:

[0020] Move the ball target until the ball target is vertically aligned with the ultrasonic probe;

[0021] Obtain a first reflection signal of the ball target through the ultrasonic probe;

[0022] Move the ball target and horizontally rotate the cover plate, and obtain a second reflection signal of the ball target through the ultrasonic probe.

[0023] Compared with the prior art, the beneficial effects provided by the present invention are as follows: During the process of measuring the perpendicularity of the ultrasonic probe, first move the spherical target until it is aligned with the ultrasonic probe in the vertical direction. At this time, obtain the first reflection signal of the spherical target through the ultrasonic probe; then horizontally move the spherical target to make it deviate, and at the same time horizontally rotate the cover plate to drive the ultrasonic probe to rotate synchronously. During this process, obtain the second reflection signal of the spherical target through the ultrasonic probe. If the intensity of the first reflection signal is always greater than that of the second reflection signal, it indicates that the main acoustic axis of the ultrasonic probe has good perpendicularity; if the intensity of a certain second reflection signal is greater than that of the first reflection signal, it indicates that there is a perpendicularity deviation in the main acoustic axis of the ultrasonic probe. At this time, continue to move the spherical target, and at the same time horizontally rotate the cover plate to drive the ultrasonic probe to rotate synchronously until the position of the spherical target with the maximum second reflection signal intensity is obtained. According to the distance by which the spherical target deviates at this time and the vertical distance from the spherical target to the ultrasonic probe, the tilt angle of the main acoustic axis of the ultrasonic probe can be calculated, and at the same time, the deviation direction of the main acoustic axis of the ultrasonic probe can be determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a semi-sectional schematic diagram of a device for measuring the perpendicularity of the acoustic axis of an immersion ultrasonic probe provided by an embodiment of the present invention;

[0026] Figure 2 is Figure 1 a cross-sectional view taken along the line A-A in

[0027] Figure 3 is Figure 1 an enlarged view of part C in

[0028] Figure 4 is Figure 1 an enlarged view of part D in

[0029] Figure 5 is Figure 1 an enlarged view of part E in

[0030] Figure 6 is Figure 1 a cross-sectional view taken along the line B-B in

[0031] Figure 7 It is a schematic diagram for showing the tilt angle of the main acoustic axis of the ultrasonic probe provided by an embodiment of the present invention.

[0032] Icons: 100 - cup cylinder; 110 - convex ring; 111 - first annular groove; 112 - annular rib; 120 - cross scale; 200 - cover plate; 210 - sleeve; 211 - first conical surface; 220 - C-shaped wedge; 221 - second conical surface; 222 - notch; 230 - end cap; 231 - top plate; 2311 - round hole; 232 - side plate; 240 - second annular groove; 300 - ultrasonic probe; 400 - ball target; 410 - ball bead; 420 - base; 500 - spherical ball bearing. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0035] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the invention is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0037] In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, terms such as "arrangement" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The inventors of the present application have found that there is currently no reliable measuring device that can measure the perpendicularity of the main acoustic axis of a water immersion ultrasonic probe. This embodiment provides a device for measuring the perpendicularity of the acoustic axis of a water immersion ultrasonic probe, which is at least used to solve the above technical problems.

[0040] Please refer to Figures 1 - 3 , the device for measuring the perpendicularity of the acoustic axis of the water immersion ultrasonic probe provided in this embodiment includes a cup cylinder 100, a cover plate 200, an ultrasonic probe 300, and a spherical target 400; the cup cylinder 100 is filled with coupling water; the cover plate 200 is rotatably arranged at the top of the cup cylinder 100; the ultrasonic probe 300 is arranged vertically and connected to the cover plate 200, and one end of the ultrasonic probe 300 extends into the cup cylinder 100 and is immersed in the coupling water; the spherical target 400 is movably arranged in the cup cylinder 100, and the moving direction of the spherical target 400 is the horizontal direction.

[0041] It should be noted that the ultrasonic probe 300 is cylindrical, the top of the cup cylinder 100 is provided with an opening, and the cover plate 200 is arranged at the top of the cup cylinder 100 and closes the opening. The cover plate 200 is a circular cover plate 200 and is rotatably arranged at the top of the cup cylinder 100 around its own central axis. The ultrasonic probe 300 passes vertically through the center of the cover plate 200, and one end is immersed in the coupling water in the cup cylinder 100. The ultrasonic probe 300 is electrically connected to the ultrasonic instrument, and the reflection signal obtained by the ultrasonic probe 300 is sent to the ultrasonic instrument for display.

[0042] In the process of measuring the perpendicularity of the ultrasonic probe 300, first move the spherical target 400 until the spherical target 400 is aligned with the ultrasonic probe 300 in the vertical direction. At this time, obtain the first reflection signal of the spherical target 400 through the ultrasonic probe 300; then horizontally move the spherical target 400 to offset the spherical target 400, and at the same time horizontally rotate the cover plate 200 to drive the ultrasonic probe 300 to rotate synchronously. During this process, obtain the second reflection signal of the spherical target 400 through the ultrasonic probe 300. If the intensity of the first reflection signal is always greater than the intensity of the second reflection signal, it indicates that the main acoustic axis of the ultrasonic probe 300 has good perpendicularity; if the intensity of a certain second reflection signal is greater than the intensity of the first reflection signal, it indicates that there is a perpendicularity deviation in the main acoustic axis of the ultrasonic probe 300. At this time, continue to move the spherical target 400, and at the same time horizontally rotate the cover plate 200 to drive the ultrasonic probe 300 to rotate synchronously until the position of the spherical target 400 with the maximum intensity of the second reflection signal is obtained. According to the distance by which the spherical target 400 deviates at this time and the vertical distance from the spherical target 400 to the ultrasonic probe 300, the tilt angle of the main acoustic axis of the ultrasonic probe 300 can be calculated, and at the same time, the deviation direction of the main acoustic axis of the ultrasonic probe 300 can be determined. In this embodiment, a sleeve 210 is provided on the cover plate 200. A first tapered surface 211 with a gradually decreasing diameter from top to bottom is provided on the inner wall of the sleeve 210. A C-shaped wedge 220 is provided in the sleeve 210. A second tapered surface 221 with a gradually decreasing diameter from top to bottom is provided on the outer wall of the C-shaped wedge 220. The first tapered surface 211 cooperates with the second tapered surface 221, and the ultrasonic probe 300 is inserted into the C-shaped wedge 220.

[0043] It should be noted that the sleeve 210 is provided in the middle of the cover plate 200, and the central axis of the sleeve 210 coincides with the central axis of the cover plate 200. Through holes are provided on the cover plate 200, and through holes are provided through the sleeve 210. The through hole of the sleeve 210 is aligned with the through hole of the cover plate 200 and has the same size; a first tapered surface 211 with a gradually decreasing diameter from top to bottom is provided at a position near the top of the inner wall of the sleeve 210. The C-shaped wedge 220 is annular, and the C-shaped wedge 220 has a notch 222. When the notch 222 of the C-shaped wedge 220 shrinks, the C-shaped wedge 220 clamps the ultrasonic probe 300 inside itself.

[0044] In this embodiment, an end cap 230 is provided on the sleeve 210. The end cap 230 is in threaded cooperation with the sleeve 210. The end cap 230 is sleeved on the ultrasonic probe 300 and is used to press down the C-shaped wedge 220 so that the inside of the C-shaped wedge 220 shrinks and clamps the ultrasonic probe 300.

[0045] When the end cap 230 is in threaded cooperation with the sleeve 210, the end cap 230 moves downward to press down the C-shaped wedge 220. Due to the cooperation of the first tapered surface 211 and the second tapered surface 221, the inside of the C-shaped wedge 220 shrinks to clamp the ultrasonic probe 300, and the ultrasonic probe 300 is fixed.

[0046] In this embodiment, the end cap 230 includes a top plate 231 and a side plate 232 connected to each other. The side plate 232 is in threaded cooperation with the sleeve 210. A circular hole 2311 is provided at the center of the top plate 231. The ultrasonic probe 300 is inserted into the circular hole 2311. The diameter of the circular hole 2311 is smaller than the outer diameter of the top end of the C-shaped wedge 220, and the diameter of the circular hole 2311 is larger than the diameter of the ultrasonic probe 300.

[0047] During the process of the threaded cooperation between the side plate 232 and the sleeve 210, the top plate 231 moves downward to press the C-shaped wedge 220, so that the inside of the C-shaped wedge 220 contracts to clamp the ultrasonic probe 300, thereby fixing the ultrasonic probe 300.

[0048] Please refer to Figure 4 , in this embodiment, the water immersion ultrasonic probe acoustic axis perpendicularity measuring device further includes a spherical ball 500. A convex ring 110 is provided at the top of the cup 100. A first annular groove 111 is provided at the top of the convex ring 110. A second annular groove 240 is provided at the bottom of the cover plate 200. The first annular groove 111 and the second annular groove 240 are arranged oppositely. The spherical ball 500 is at least partially arranged in the first annular groove 111, and the spherical ball 500 is at least partially arranged in the second annular groove 240.

[0049] During the process of rotating the cover plate 200, the spherical ball 500 rolls in the first annular groove 111 and the second annular groove 240, so as to realize the rotation of the cover plate 200 relative to the cup 100, and the rotation stability of the cover plate 200 can be better.

[0050] In this embodiment, an annular edge 112 is provided at the top of the convex ring 110. The outer side wall of the cover plate 200 is attached to the inner side wall of the annular baffle.

[0051] The setting of the annular edge 112 limits the cover plate 200 to prevent the cover plate 200 from shifting in the horizontal direction, ensuring the rotation stability of the cover plate 200.

[0052] Please refer to Figure 5 , in this embodiment, the spherical target 400 includes a ball bead 410 and a base 420. The ball bead 410 is arranged on the base 420. The base 420 is movably arranged in the cup 100.

[0053] It should be noted that the ball bead 410 and the base 420 are connected by a vertical rod. The base 420 can be manually moved or moved by a screw device, so as to drive the ball bead 410 to move synchronously. The ball bead 410 reflects ultrasonic signals to the ultrasonic probe 300 in real time.

[0054] In this embodiment, the cup 100 is a cylinder, and the ultrasonic probe 300 is facing the center of the cylinder.

[0055] During the process of measuring the perpendicularity of the ultrasonic probe 300, first move the spherical target 400 until the spherical target 400 is aligned with the ultrasonic probe 300 in the vertical direction. At this time, the spherical target 400 is located at the center of the bottom of the cup cylinder 100, and the spherical target 400 obtains the first reflection signal of the spherical target 400 through the ultrasonic probe 300.

[0056] Please refer to Figure 6 , in this embodiment, a cross scale 120 is provided on the inner bottom wall of the cup cylinder 100, and the center of the cross scale 120 is the center of the circle of the cup cylinder 100.

[0057] By providing the cross scale 120 on the inner bottom wall of the cup cylinder 100, when obtaining the first reflection signal, it is convenient to observe the position of the spherical target 400. Move the spherical target 400 to the center of the cross scale 120. At this time, the spherical target 400 is aligned with the ultrasonic probe 300 in the vertical direction. When rotating the cover plate 200, it can ensure that the geometric acoustic axis of the ultrasonic probe 300 is vertically aligned with the center of the bottom surface of the cup cylinder 100, obtain stable and accurate test results, and thereby determine a suitable ultrasonic probe 300 for screening performance.

[0058] In other embodiments, the cup cylinder 100 can be replaced with a bottomless cylinder, and the spherical target 400 can be placed on the horizontal plane under water and sleeved into the center of the cup cylinder 100. In this way, the cup cylinder 100 can be horizontally moved and the ultrasonic probe 300 can be rotated for testing, and there is no need to fill and pour water before and after the test.

[0059] In addition, this embodiment also provides a usage method of a water immersion ultrasonic probe acoustic axis perpendicularity measuring device, which is applied to the above-mentioned water immersion ultrasonic probe acoustic axis perpendicularity measuring device; the usage method includes:

[0060] Step S100, move the spherical target 400 until the spherical target 400 is aligned with the ultrasonic probe 300 along the vertical direction.

[0061] In this step, move the spherical target 400 until the spherical target 400 moves to the center of the cross scale 120. At this time, the spherical target 400 is aligned with the ultrasonic probe 300 in the vertical direction, and the signal fed back by the spherical target 400 at this time is the first reflection signal.

[0062] Step S200, obtain the first reflection signal of the spherical target 400 through the ultrasonic probe 300.

[0063] In this step, obtain the first reflection signal of the spherical target 400 through the ultrasonic probe 300, and the intensity of the first reflection signal is displayed on the ultrasonic instrument, and record the intensity of the first reflection signal.

[0064] Step S300, move the spherical target 400 and rotate the cover plate 200, and obtain the second reflection signal of the spherical target 400 through the ultrasonic probe 300.

[0065] In this step, the ball target 400 is moved horizontally and the cover plate 200 is rotated about the central axis of the cover plate 200. The second reflection signal of the ball target 400 is obtained in real time by the ultrasonic probe 300. If the intensity of the first reflection signal is always greater than that of the second reflection signal, it indicates that the main acoustic axis of the ultrasonic probe 300 has good perpendicularity; if the intensity of a certain second reflection signal is greater than that of the first reflection signal, it indicates that there is a perpendicularity deviation in the main acoustic axis of the ultrasonic probe 300. At this time, continue to move the ball target 400, and at the same time rotate the cover plate 200 horizontally to drive the ultrasonic probe 300 to rotate synchronously until the position of the ball target 400 with the maximum second reflection signal intensity is obtained. According to the distance between the ball target 400 and the center of the bottom of the cup cylinder 100 and the vertical distance from the ball target 400 to the ultrasonic probe 300 at this time, the tilt angle of the main acoustic axis of the ultrasonic probe 300 can be calculated, and at the same time, the deviation direction of the main acoustic axis of the ultrasonic probe 300 can be determined.

[0066] Please combine Figure 7 , in the process of calculating the tilt angle α of the main acoustic axis of the ultrasonic probe 300, the tilt angle α of the main acoustic axis of the ultrasonic probe 300 can be calculated according to the distance L between the ball target 400 and the center of the cross scale 120 and the vertical distance H from the ball target 400 to the ultrasonic probe 300. The deviation direction of the main acoustic axis of the ultrasonic probe 300 can be determined according to the deviation direction of the ball target 400.

[0067] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for using a device for measuring the perpendicularity of the acoustic axis of a water immersion ultrasonic probe, characterized in that, Applied to a device for measuring the verticality of the acoustic axis of an immersion ultrasonic probe, the device for measuring the verticality of the acoustic axis of the immersion ultrasonic probe includes a cup cylinder (100), a cover plate (200), an ultrasonic probe (300), and a spherical target (400); the cup cylinder (100) is filled with coupling water; the cover plate (200) is rotatably arranged at the top of the cup cylinder (100); the ultrasonic probe (300) is arranged vertically and connected to the cover plate (200), and one end of the ultrasonic probe (300) extends into the cup cylinder (100) and is immersed in the coupling water; the spherical target (400) is movably arranged in the cup cylinder (100), and the moving direction of the spherical target (400) is the horizontal direction; The usage method includes: Moving the spherical target (400) until the spherical target (400) is vertically aligned with the ultrasonic probe (300); Obtaining a first reflection signal of the spherical target (400) through the ultrasonic probe (300); Moving the spherical target (400) and horizontally rotating the cover plate (200), and obtaining a second reflection signal of the spherical target (400) through the ultrasonic probe (300); If the intensity of the first reflection signal is always greater than that of the second reflection signal, it indicates that the main acoustic axis of the ultrasonic probe (300) has good verticality; if the intensity of a certain second reflection signal is greater than that of the first reflection signal, it indicates that there is a verticality deviation in the main acoustic axis of the ultrasonic probe (300); when obtaining the position of the spherical target (400) with the maximum intensity of the second reflection signal, the inclination angle of the main acoustic axis of the ultrasonic probe (300) and the deviation azimuth of the main acoustic axis of the ultrasonic probe (300) are obtained according to the distance between the spherical target (400) deviating from the center of the bottom of the cup cylinder (100) at this time and the vertical distance from the spherical target (400) to the ultrasonic probe (300).

2. An apparatus for measuring the perpendicularity of the acoustic axis of a water immersion ultrasonic probe, characterized in that, Used for using according to the usage method of the device for measuring the verticality of the acoustic axis of the immersion ultrasonic probe described in claim 1; The device for measuring the verticality of the acoustic axis of the immersion ultrasonic probe includes a cup cylinder (100), a cover plate (200), an ultrasonic probe (300), and a spherical target (400); The cup cylinder (100) is filled with coupling water; The cover plate (200) is rotatably arranged at the top of the cup cylinder (100); The ultrasonic probe (300) is arranged vertically and connected to the cover plate (200), and one end of the ultrasonic probe (300) extends into the cup cylinder (100) and is immersed in the coupling water; The spherical target (400) is movably arranged in the cup cylinder (100), and the moving direction of the spherical target (400) is the horizontal direction.

3. The device for measuring the verticality of the acoustic axis of the immersion ultrasonic probe according to claim 2, characterized in that, A sleeve (210) is provided on the cover plate (200). A first conical surface (211) with a gradually decreasing diameter from top to bottom is provided on the inner wall of the sleeve (210). A C-shaped wedge (220) is provided in the sleeve (210). A second conical surface (221) with a gradually decreasing diameter from top to bottom is provided on the outer wall of the C-shaped wedge (220). The first conical surface (211) cooperates with the second conical surface (221). The ultrasonic probe (300) is inserted into the C-shaped wedge (220).

4. The water immersion ultrasonic probe acoustic axis perpendicularity measuring device according to claim 3, characterized in that, An end cap (230) is provided on the sleeve (210). The end cap (230) is in threaded cooperation with the sleeve (210). The end cap (230) is sleeved on the ultrasonic probe (300) and is used to press down the C-shaped wedge (220) so that the inside of the C-shaped wedge (220) shrinks and clamps the ultrasonic probe (300).

5. The water immersion ultrasonic probe acoustic axis perpendicularity measurement device according to claim 4, characterized in that, The end cap (230) includes a top plate (231) and a side plate (232) connected to each other. The side plate (232) is in threaded cooperation with the sleeve (210). A round hole (2311) is provided at the center of the top plate (231). The ultrasonic probe (300) is inserted into the round hole (2311). The diameter of the round hole (2311) is smaller than the outer diameter of the top end of the C-shaped wedge (220), and the diameter of the round hole (2311) is larger than the diameter of the ultrasonic probe (300).

6. The device for measuring the sound axis perpendicularity of the water immersion ultrasonic probe according to claim 2, wherein It further includes spherical balls (500). A convex ring (110) is provided at the top of the cup-shaped cylinder (100). A first annular groove (111) is provided at the top of the convex ring (110). A second annular groove (240) is provided at the bottom of the cover plate (200). The first annular groove (111) and the second annular groove (240) are arranged opposite to each other. At least part of the spherical balls (500) are arranged in the first annular groove (111), and at least part of the spherical balls (500) are arranged in the second annular groove (240).

7. The device for measuring the sound axis perpendicularity of the water immersion ultrasonic probe according to claim 6, characterized in that, An annular rib (112) is provided at the top of the convex ring (110). The outer side wall of the cover plate (200) is in contact with the inner side wall of the annular rib.

8. The device for measuring the perpendicularity of the acoustic axis of the water immersion ultrasonic probe according to claim 2, wherein The ball target (400) includes ball beads (410) and a base (420). The ball beads (410) are arranged on the base (420). The base (420) is movably arranged in the cup-shaped cylinder (100).

9. The device for measuring the perpendicularity of the acoustic axis of the immersion ultrasonic probe according to claim 2, characterized in that, The cup-shaped cylinder (100) is a cylinder, and the ultrasonic probe (300) is directed at the center of the cylinder.

10. The device for measuring the verticality of the acoustic axis of the immersion ultrasonic probe according to claim 9, characterized in that, A cross scale (120) is provided on the inner bottom wall of the cup-shaped cylinder (100). The center of the cross scale (120) is the center of the circle of the cup-shaped cylinder (100).

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