Positioning assembly and ultrasonic power meter

By designing the positioning components in the ultrasonic power meter, the problem of low testing efficiency caused by changes in the position of the sound absorption tank and the conical target is solved, and the stable alignment of the position of the sound absorption tank and the conical target is achieved, improving the testing efficiency.

CN222993836UActive Publication Date: 2025-06-17HUNAN PENINSULA MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202421724113.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-19
Publication Date
2025-06-17
Estimated Expiration
2034-07-19

AI Technical Summary

Technical Problem

When using ultrasonic power meter, the relative positions of the sound absorption tank and the conical target are prone to change, resulting in the need to be re-aligned before each use, affecting the test efficiency.

Method used

A positioning assembly is designed, including a main structure, a first positioning structure and a second positioning structure for engaging with the sound-absorbing tank and a conical target positioning to make the central axis coaxially aligned to ensure the position stability.

Benefits of technology

Through the use of the positioning assembly, the risk of deviating between the sound absorbing sink and the conical target is avoided, the step of re-alignment is reduced, and the testing efficiency of the ultrasonic power meter is improved.

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Abstract

The utility model discloses a positioning assembly and an ultrasonic power meter, and relates to the technical field of ultrasonic power meters, the ultrasonic power meter comprises a sound absorption water tank and a conical target, the positioning assembly comprises a main body structure, a first positioning structure and a second positioning structure, and the main body structure is used for bearing the sound absorption water tank and the conical target; the first positioning structure is arranged on the main body structure and used for being in positioning fit with the sound absorption water tank; the second positioning structure is arranged on the main body structure and is used for being in positioning fit with the conical target, so that the central axis of the conical target and the central axis of the sound absorption water tank are coaxially aligned; according to the technical scheme of the utility model, the test efficiency of the ultrasonic power meter can be improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic power meters, and particularly relates to a positioning component and an ultrasonic power meter. Background Art

[0002] In the related art, when measuring the ultrasonic power, an ultrasonic power meter needs to align the central axis of an acoustic absorption water tank with the tip of a conical target to ensure the measurement accuracy of the ultrasonic power. Since the relative positions of the acoustic absorption water tank and the conical target will change when replacing the medium water in the acoustic absorption water tank or moving the ultrasonic power meter, it is necessary to realign the acoustic absorption water tank and the conical target every time before using the ultrasonic power meter, which affects the test efficiency of the ultrasonic power meter. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a positioning component and an ultrasonic power meter, aiming to improve the test efficiency of the ultrasonic power meter.

[0004] To achieve the above purpose, the positioning component proposed by the utility model is applied to an ultrasonic power meter, the ultrasonic power meter includes an acoustic absorption water tank and a conical target, and the positioning component includes: a main body structure for carrying the acoustic absorption water tank and the conical target; a first positioning structure provided on the main body structure for positioning and cooperating with the acoustic absorption water tank; and a second positioning structure provided on the main body structure for positioning and cooperating with the conical target, so that the central axis of the conical target and the central axis of the acoustic absorption water tank are coaxially aligned.

[0005] In an embodiment, the first positioning structure includes: a positioning frame provided with a first positioning hole for sleeving around the acoustic absorption water tank; and at least two limiting frames provided on the main body structure and located around the positioning frame, and the at least two limiting frames are in limiting cooperation with the positioning frame to enable the positioning frame and the main body structure to be positioned and cooperate.

[0006] In an embodiment, the first positioning hole includes a first connection section and a second connection section that are sequentially connected, the acoustic absorption water tank is installed in the first connection section, and the second positioning structure is installed in the second connection section.

[0007] In an embodiment, the positioning frame includes: a main body portion provided with the first positioning hole; and at least two positioning portions spaced around the main body portion, and each positioning portion corresponds to one of the limiting frames.

[0008] In one embodiment, at least a portion of the limiting frame is spaced apart from the main structure to enclose the main structure to form a limiting space, and one end of the positioning portion is connected to the peripheral side of the main body, and the other end is inserted into the limiting space.

[0009] In one embodiment, the limiting frame is provided with a connecting hole connected to the limiting space, and the first positioning structure further includes a connecting piece, which is passed through the connecting hole to be locked to a side of the positioning portion away from the main structure.

[0010] In one embodiment, a cushion body is further provided on a side of the main body portion facing the main structure.

[0011] In one embodiment, a second positioning hole is formed at one end of the second positioning structure away from the main structure; the conical target is arranged in the sound absorbing water tank, and a connecting structure is further provided on the peripheral side of the conical target, one end of the connecting structure is connected to the conical target, and the other end extends to the outer peripheral side of the sound absorbing water tank and is inserted into the second positioning hole, so that the conical target and the main structure are positioned and matched.

[0012] In one embodiment, a positioning groove is formed on one side of the main structure facing the first positioning structure, and the bottom of the sound-absorbing water tank is received in the positioning groove.

[0013] The utility model also proposes an ultrasonic power meter, comprising a sound absorbing water trough, a conical target and a positioning assembly as described in any one of the above, wherein the positioning assembly comprises: a main structure, used to carry the sound absorbing water trough and the conical target; a first positioning structure, the first positioning structure is arranged on the main structure, and is used to position and cooperate with the sound absorbing water trough; and a second positioning structure, the second positioning structure is arranged on the main structure, and is used to position and cooperate with the conical target, so that the central axis of the conical target and the central axis of the sound absorbing water trough are coaxially aligned.

[0014] The technical solution of the utility model realizes the coaxial alignment of the sound absorbing water trough and the conical target by adopting a positioning component, wherein the positioning component includes a main structure and a first positioning structure and a second positioning structure arranged on the main structure, and the first positioning structure and the second positioning structure can respectively cooperate with the sound absorbing water trough and the conical target in positioning, so that on the basis of realizing the coaxial alignment of the sound absorbing water trough and the conical target, the positions of the sound absorbing water trough and the conical target are relatively fixed with respect to the main structure, thereby avoiding the risk of displacement between the sound absorbing water trough and the conical target, thereby reducing the steps of realigning the sound absorbing water trough and the conical target before using the ultrasonic power meter, which is beneficial to improving the test efficiency of the ultrasonic power meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0016] Figure 1 Schematic diagram of the structure of an embodiment of the positioning component provided by the present invention;

[0017] Figure 2 For Figure 1 exploded view of the positioning component in

[0018] Figure 3 For Figure 1 schematic diagram of the structure of the positioning frame of the positioning component in

[0019] Explanation of the reference numerals in the drawings:

[0020] 100, positioning component; 10, main body structure; 11, positioning groove; 20, first positioning structure; 21, positioning frame; 211, main body part; 212, positioning part; 213, first positioning hole; 213a, first connection section; 213b, second connection section; 22, limiting frame; 221, connection hole; 23, connecting piece; 24, cushion body; 30, second positioning structure; 31, second positioning hole;

[0021] 200, sound-absorbing water tank;

[0022] 300, conical target; 310, connection structure.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] In the related art, when measuring ultrasonic power with an ultrasonic power meter, it is necessary to align the central axis of the sound-absorbing water tank and the tip of the conical target to ensure the measurement accuracy of the ultrasonic power. Since the relative positions of the sound-absorbing water tank and the conical target will change when replacing the medium water in the sound-absorbing water tank or moving the ultrasonic power meter, etc., it is necessary to realign the sound-absorbing water tank and the conical target every time before using the ultrasonic power meter, which affects the test efficiency of the ultrasonic power meter.

[0028] The present utility model provides a positioning assembly 100, which is applied to an ultrasonic power meter. The ultrasonic power meter includes a sound-absorbing water tank 200 and a conical target 300. Among them, a receiving space with one end open is formed in the sound-absorbing water tank 200. The conical target 300 is arranged in the sound-absorbing water tank 200, and the tip of the conical target is located on its central axis, for being received in the sound-absorbing water tank 200, and its tip is arranged towards the opening of the sound-absorbing water tank 200.

[0029] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the positioning assembly 100 includes:

[0030] A main body structure 10 for carrying the sound-absorbing water tank 200 and the conical target 300; a first positioning structure 20, which is arranged on the main body structure 10 and is used for positioning and cooperating with the sound-absorbing water tank 200; and a second positioning structure 30, which is arranged on the main body structure 10 and is used for positioning and cooperating with the conical target 300, so that the central axis of the conical target 300 and the central axis of the sound-absorbing water tank 200 are coaxially aligned.

[0031] Among them, the main body structure 10 can be, but is not limited to, arranged in a plate structure or a frame structure. An installation surface is formed on one side surface thereof to serve as the installation basis for the positioning component 100, and the first positioning structure 20 and the second structure are installed thereon, so as to perform positioning cooperation with the sound absorption water tank 200 and the conical target 300 through the first positioning structure 20 and the second positioning structure 30 respectively. In some embodiments, the first positioning structure 20 or the second positioning structure 30 can be detachably connected to the main body structure 10 in a separated manner, or can be integrally formed with the main body structure 10; the first positioning structure 20 and the second positioning structure 30 can, but are not limited to, achieve the function of positioning cooperation through connection methods such as plug-in cooperation. The specific implementation manner can be set according to actual needs and will not be limited herein.

[0032] The technical solution of the present utility model realizes the coaxial alignment of the sound absorption water tank 200 and the conical target 300 by adopting the positioning component 100. Among them, the positioning component 100 includes a main body structure 10, a first positioning structure 20 and a second positioning structure 30 arranged on the main body structure 10. The first positioning structure 20 and the second positioning structure 30 can respectively perform positioning cooperation with the sound absorption water tank 200 and the conical target 300, so that on the basis of realizing the coaxial alignment of the sound absorption water tank 200 and the conical target 300, the positions of the sound absorption water tank 200 and the conical target 300 are both relatively fixed with respect to the main body structure 10, thereby avoiding the risk of misalignment between the sound absorption water tank 200 and the conical target 300. Therefore, the steps of realigning the sound absorption water tank 200 and the conical target 300 before using the ultrasonic power meter can be reduced, which is beneficial to improving the test efficiency of the ultrasonic power meter.

[0033] Please refer to Figures 1 to 3 , in the embodiment of the present utility model, the first positioning structure 20 includes: a positioning frame 21, the positioning frame 21 is provided with a first positioning hole 213 to be sleeved on the periphery of the sound absorption water tank 200; and at least two limiting frames 22, at least two limiting frames 22 are arranged on the main body structure 10 and are located on the periphery of the positioning frame 21, and at least two limiting frames 22 are in limiting cooperation with the positioning frame 21 to enable the positioning frame 21 and the main body structure 10 to perform positioning cooperation.

[0034] Among them, the shape of the first positioning hole 213 can be set to be adapted to the outer contour of the sound absorption water tank 200, or, in the following embodiments, at least part of the shape of the first positioning hole 213 can be set to be adapted to the sound absorption water tank 200, so as to facilitate the positioning cooperation between the positioning frame 21 and the water absorption water tank.

[0035] Optionally, the aforementioned positioning frame 21 can be set as a closed-loop annular structure. For example, it can be an annular structure arranged around the circumferential direction of the sound-absorbing water tank 200, etc., so as to form a closed-loop first positioning hole 213 through the enclosure of the positioning frame 21; the aforementioned positioning frame 21 can also be set as an open-loop annular structure, that is, an annular structure with a certain-width notch on the surrounding path, such as an annular structure obtained by surrounding in a U-shaped path, etc., so as to form an open-loop first positioning hole 213 through the enclosure of the positioning frame 21. The specific implementation manner can be set according to actual needs and will not be limited here.

[0036] In some embodiments, two limiting frames 22 can be provided. The two limiting frames 22 are respectively arranged on both sides of the positioning frame 21 and are oppositely arranged along the diameter direction of the positioning frame 21, so as to realize the positioning cooperation between the positioning frame 21 and the main body structure 10 in a two-point fixing manner. Of course, the technical solution of the present invention is not limited to this. In some embodiments, multiple limiting frames 22 can also be provided, and the multiple limiting frames 22 are sequentially arranged at intervals along the circumferential direction of the positioning frame 21. The specific implementation manner can be set according to actual needs and will not be limited here.

[0037] Please refer to Figure 3 , in the embodiment of the present invention, the first positioning hole 213 includes a first connection section 213a and a second connection section 213b that are sequentially communicated. The sound-absorbing water tank 200 is installed on the first connection section 213a, and the second positioning structure 30 is installed on the second connection section 213b.

[0038] Among them, the shape of the first connection section 213a can be adapted to the outer contour of the sound-absorbing water tank 200. In some embodiments, the sound-absorbing water tank 200 is a circular barrel, and the first connection section 213a is a circular hole structure adapted to the circular barrel. The shape of the second connection section 213b can be, but is not limited to, set as a rectangle, and is used to surround the periphery of the second positioning structure 30. Such a setting is beneficial to improving the position stability between the first positioning structure 20 and the second positioning structure 30.

[0039] Please refer to Figures 1 to 3 , in the embodiment of the present invention, the positioning frame 21 includes: a main body portion 211, and the main body portion 211 is provided with the first positioning hole 213; and at least two positioning portions 212, and the at least two positioning portions 212 are spaced apart on the periphery of the main body portion 211, and each positioning portion 212 is correspondingly arranged for a limiting frame 22.

[0040] In some embodiments, two positioning parts 212 may be provided, and the two positioning parts 212 are respectively provided on both sides of the main body 211 and are arranged oppositely along the diameter direction of the positioning frame 21, and each positioning part 212 is provided corresponding to a limiting frame 22. Of course, the technical solution of the utility model is not limited to this. In some embodiments, multiple positioning parts 212 may also be provided, and multiple positioning parts 212 are arranged in sequence along the circumference of the main body 211, and each positioning part 212 is provided corresponding to a limiting frame 22. The specific implementation method can be set according to actual needs and is not limited here.

[0041] See also Figures 1 to 2 In an embodiment of the utility model, at least a portion of the limiting frame 22 is spaced apart from the main structure 10 to enclose the main structure 10 to form a limiting space, and one end of the positioning portion 212 is connected to the peripheral side of the main body 211, and the other end is inserted into the limiting space.

[0042] Specifically, in some embodiments, the limit frame 22 includes a limit body and two fixed legs, and the two fixed legs are respectively arranged at opposite ends of the limit body and are respectively connected to the main structure 10, so that the limit body can be erected on one side surface of the main structure 10, so that the limit frame 22 and the main structure 10 can enclose a limit space for plugging the positioning part 212.

[0043] Among them, the fixing legs may be provided with fixing holes for inserting fixing screws, so that the fixing legs can be installed and fixed to the main structure 10 through the fixing screws. Of course, the technical solution of the utility model is not limited to this. In some embodiments, the fixing legs may also be connected to the main structure 10 by other means such as bonding, welding, etc. The specific implementation method can be set according to actual needs and is not limited here.

[0044] See also Figure 2 In an embodiment of the utility model, the limiting frame 22 is provided with a connecting hole 221 connected to the limiting space, and the first positioning structure 20 also includes a connecting member 23, which is passed through the connecting hole 221 to be locked to the side of the positioning portion 212 away from the main structure 10.

[0045] The connecting member 23 may be, but is not limited to, a screw, which may be inserted through the connecting hole 221 on the limiting frame 22 and pressed against the positioning portion 212 in the limiting space to lock the positioning portion 212 in the limiting space. Furthermore, in some embodiments, the screw may be a hand screw, so that the user can manually adjust the locking tightness of the screw to lock or release the positioning portion 212.

[0046] See also Figure 2In the embodiment of the present utility model, a pad 24 is further provided on one side of the main body portion 211 facing the main structure 10 .

[0047] The pad 24 and the main body 211 can be connected to each other by, but not limited to, bonding. The main body 211 and the pad 24 are both limited in the limited space formed by the limiting frame 22 and the main structure 10, and the side of the pad 24 facing away from the main body 211 is against the main structure 10. By providing the pad 24, the main body 211 can be limited and positioned, which is conducive to improving the installation stability between the positioning frame 21, the limiting frame 22 and the main structure 10.

[0048] See also Figures 1 to 2 In the embodiment of the utility model, a second positioning structure 30 is provided with a second positioning hole 31 at one end away from the main structure 10; a conical target 300 is arranged in the sound absorbing water tank 200, and a connecting structure 310 is also provided on the peripheral side of the conical target 300, one end of the connecting structure 310 is connected to the conical target 300, and the other end extends to the outer peripheral side of the sound absorbing water tank 200, and is inserted into the second positioning hole 31, so that the conical target 300 and the main structure 10 are positioned and matched. The second positioning hole 31 can be provided with an orientation structure, so that when the radial angle of the connecting structure 310 in the second positioning hole 31 is unique, the position displacement due to shaking is avoided.

[0049] Specifically, the connection structure 310 includes a first segment, a second segment, and a third segment that are bent and connected in sequence, wherein the first segment and the third segment are arranged in parallel and correspond to the inner and outer sides of the sound absorbing water tank 200, respectively, and the second segment is arranged outside the notch of the sound absorbing water tank 200 and connected between the end of the first segment and the end of the third segment. The end of the first segment away from the second segment is connected to the peripheral side of the bottom of the conical target 300, and the end of the third segment away from the second segment is plugged and matched with the second positioning hole 31. With such a configuration, the second positioning structure 30 can realize the positioning of the conical target 300 accommodated in the sound absorbing water tank 200 through the connection structure 310.

[0050] See also Figure 2 In an embodiment of the present utility model, a positioning groove 11 is formed on one side of the main structure 10 facing the first positioning structure 20 , and the bottom of the sound-absorbing water tank 200 is received in the positioning groove 11 .

[0051] The shape of the positioning groove 11 is adapted to the bottom contour of the sound absorbing water tank 200. Such a configuration is conducive to further improving the installation stability between the sound absorbing water tank 200 and the main structure 10.

[0052] The present utility model also provides an ultrasonic power meter, which includes an acoustic absorption water tank 200, a conical target 300, and a positioning assembly 100. The specific structure of the positioning assembly 100 refers to the above-mentioned embodiments. Since this ultrasonic power meter adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated one by one here.

[0053] Specifically, in the embodiment of the present utility model, when assembling the positioning assembly 100, the gasket 24 can be first connected to the positioning portion 212 of the positioning frame 21, and then the positioning frame 21 is placed on the main body structure 10; then, the limiting frame 22 is fixed to the main body structure 10, and the positioning portion 212 is passed through the limiting space formed by enclosing the limiting frame 22 and the main body structure 10, and the positioning portion 212 is locked in the limiting space by hand-tightening screws to complete the installation of the first positioning structure 20; then, the acoustic absorption water tank 200 is installed on the main body structure 10, and the acoustic absorption water tank 200 is arranged in the positioning groove 11 of the main body structure 10 and the first positioning hole 213 of the first installation structure to complete the positioning cooperation between the first positioning structure 20 and the acoustic absorption water tank 200; finally, the conical target 300 is arranged in the acoustic absorption water tank 200, and the conical target 300 is positioned and matched with the second installation hole of the second positioning structure 30 through the connection structure 310 to realize the coaxial alignment of the central axis of the conical target 300 and the central axis of the acoustic absorption water tank 200.

[0054] Among them, the second positioning structure 30 is in a circular tube shape, and a circular second positioning hole 31 is formed therein. One end of the connection structure 310 facing the second positioning structure 30 is also in a circular tube shape. During use, one end of the connection structure 310 facing the second positioning structure 30 is used to be centered and placed at the second positioning hole 31 of the second positioning structure 30, so as to realize the alignment between the second positioning structure 30 and the conical target 300. In addition, the hand-tightening screw at the limiting frame 22 of the first positioning structure 20 can be loosened, so that the positioning frame 21 of the first positioning structure 20 can adjust its installation position relative to the main body structure 10, so that the main body structure 10 and the acoustic absorption water tank 200 thereon can be aligned with the target part of the conical target 300. After the alignment is completed, the hand-tightening screw can be tightened to realize the alignment between the first positioning structure 20 and the main body structure 10.

[0055] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A positioning assembly, applied to an ultrasonic power meter, characterized in that: The ultrasonic power meter includes a sound absorbing water tank and a conical target, and the positioning assembly includes: A main structure, used for carrying the sound absorbing water tank and the conical target; A first positioning structure, which is disposed on the main structure and is used for positioning and cooperating with the sound-absorbing water tank; and The second positioning structure is arranged on the main structure and is used for positioning and cooperating with the conical target so that the central axis of the conical target and the central axis of the sound absorbing water tank are coaxially arranged.

2. The positioning assembly according to claim 1, characterized in that The first positioning structure comprises: A positioning frame, wherein the positioning frame is provided with a first positioning hole so as to be sleeved on the peripheral side of the sound absorbing water tank; and At least two limiting frames are provided on the main structure and are located around the positioning frame. At least two limiting frames are limitedly matched with the positioning frame to make the positioning frame and the main structure positioned and matched.

3. The positioning assembly according to claim 2, characterized in that The first positioning hole includes a first connecting section and a second connecting section that are connected in sequence, the sound absorbing water tank is installed on the first connecting section, and the second positioning structure is installed on the second connecting section.

4. The positioning assembly according to claim 2, characterized in that: The positioning frame comprises: a main body, wherein the first positioning hole is formed in the main body; and At least two positioning parts are provided at intervals on the periphery of the main body, and each positioning part is provided corresponding to one of the limiting frames.

5. The positioning assembly according to claim 4, characterized in that: At least a portion of the limiting frame is spaced apart from the main structure to enclose the main structure to form a limiting space. One end of the positioning portion is connected to the peripheral side of the main body, and the other end is inserted into the limiting space.

6. The positioning assembly according to claim 5, characterized in that The limiting frame is provided with a connecting hole communicating with the limiting space, and the first positioning structure further comprises a connecting piece, and the connecting piece is passed through the connecting hole to be locked to a side of the positioning portion away from the main structure.

7. The positioning assembly according to claim 5, characterized in that: A pad is also provided on one side of the main body portion facing the main structure.

8. The positioning assembly according to any one of claims 1 to 7, characterized in that: A second positioning hole is formed at one end of the second positioning structure away from the main structure; The conical target is arranged in the sound absorbing water tank, and a connecting structure is also provided on the peripheral side of the conical target. One end of the connecting structure is connected to the conical target, and the other end extends to the outer peripheral side of the sound absorbing water tank and is inserted into the second positioning hole to position and cooperate with the conical target and the main structure.

9. The positioning assembly according to any one of claims 1 to 7, characterized in that: A positioning groove is formed on one side of the main structure facing the first positioning structure, and the bottom of the sound-absorbing water tank is received in the positioning groove.

10. An ultrasonic power meter, characterized in that: It comprises a sound-absorbing water tank, a conical target and a positioning assembly as claimed in any one of claims 1 to 9.