Hydrophone fixing frame

Abstract

The utility model relates to a hydrophone fixing frame which comprises a hydrophone fixing seat and a hydrophone gland, the hydrophone fixing seat is of a hollow structure with two open ends, the interior of the hydrophone fixing seat is suitable for placing a hydrophone, an internal thread is preset at the top opening of the hydrophone fixing seat, and the aperture of the bottom opening is smaller than the diameter of the section of the hydrophone. The hydrophone gland is of a hollow structure with two open ends and is embedded in the top of the hydrophone fixing seat to wrap the hydrophone, the aperture of the top opening of the hydrophone gland is smaller than the diameter of the section of the hydrophone, and the hydrophone fixing seat and the hydrophone gland are used for fixing the hydrophone, so that the hydrophone can be kept coaxial with the hydrophone fixing shaft when in use, and the hydrophone fixing shaft can be used for fixing the hydrophone. The hydrophone fixing seat is simple in structure and convenient for subsequent measurement experiments, operation can be completed only by simply rotating the hydrophone gland in the mounting and dismounting process, use is convenient and simple, the hydrophone fixing seat can be suitable for hydrophones of various models and specifications, and only the hydrophone fixing seat and the hydrophone gland of corresponding sizes need to be selected according to the sizes of the hydrophones.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultrasonic transducer performance testing, and particularly relates to a hydrophone fixing frame. BACKGROUND

[0002] An ultrasonic transducer is a device that converts other forms of energy into ultrasonic energy, or converts ultrasonic energy into other forms of energy. The ultrasonic transducer has a wide range of applications in the fields of medical diagnosis, treatment, biology, chemistry, physics, industry, agriculture, etc. The performance parameter measurement of the ultrasonic transducer mainly includes sensitivity, directivity, frequency characteristic, impedance characteristic, etc., and the sensitivity is one of the most important parameters reflecting the performance of the ultrasonic transducer. The measurement of the sensitivity is usually completed in a hydrophone method measurement system. The hydrophone is a sensor that converts ultrasonic signals into electrical signals, and is used to receive ultrasonic signals emitted by the ultrasonic transducer and convert them into electrical signals for measurement.

[0003] In the hydrophone method measurement system, the fixing frame of the hydrophone is a device for installing and fixing the hydrophone, which functions to ensure that the hydrophone can stably receive the ultrasonic signals emitted by the ultrasonic transducer, and at the same time, ensure the relative positional relationship between the hydrophone and the ultrasonic transducer, so as to accurately measure the sensitivity of the ultrasonic transducer. However, when the hydrophone is not fixed stably, the central axis of the hydrophone and the sound field axis of the transducer are not parallel during the measurement process, thereby affecting the accuracy of the measurement. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a hydrophone fixing frame which ensures that the central axis of the hydrophone is coaxial or approximately coaxial with the mounting device.

[0005] According to an aspect of the present application, a hydrophone fixing frame is provided, which comprises a hydrophone fixing seat and a hydrophone gland.

[0006] The hydrophone fixing seat is a hollow structure with open ends, and is suitable for placing the hydrophone inside. The top opening of the hydrophone fixing seat is provided with internal threads, and the cross section of the bottom is circular. The opening diameter is greater than the outer positioning cylindrical surface of the probe interface of the hydrophone, and is less than the diameter of the axial positioning platform.

[0007] The hydrophone gland is a hollow structure with open ends, and is embedded in the top of the hydrophone fixing seat to cover the hydrophone. The top opening diameter of the hydrophone gland is less than the cross section diameter of the hydrophone, and the bottom is provided with external threads matched with the internal threads of the hydrophone fixing seat. The hydrophone gland is rotated relative to the hydrophone fixing seat, and the hydrophone is fixed in the hydrophone fixing seat.

[0008] In a possible implementation, the top opening aperture of the hydrophone gland gradually narrows from the bottom to the top of the hydrophone gland.

[0009] In a possible implementation, the top opening cross section of the hydrophone gland is tapered and attached to the top of the hydrophone.

[0010] In a possible implementation, the cross section of the hydrophone gland is in a “T” shape structure, including a rotating part and an adjusting part.

[0011] Both the rotating part and the adjusting part are hollow cylindrical structures.

[0012] The cross section diameter of the rotating part is smaller than that of the adjusting part.

[0013] The outer side of the rotating part is provided with the external thread, which matches the internal thread provided at the top of the hydrophone fixing seat, and the diameter of the adjusting part is greater than the top opening aperture of the hydrophone fixing seat.

[0014] In a possible implementation, the sealing ring is further included.

[0015] A sealing groove is formed in the side wall connecting the rotating part and the adjusting part along the circumferential direction of the rotating part, and the sealing ring is embedded in the sealing groove.

[0016] In a possible implementation, the hydrophone fixing seat is in a cylindrical structure.

[0017] The cross section of the bottom of the hydrophone fixing seat is circular along the axial direction.

[0018] The bottom opening aperture of the hydrophone fixing seat gradually narrows from the top to the bottom of the hydrophone fixing seat and is coaxial, and the inside of the hydrophone fixing seat is attached to the hydrophone.

[0019] In a possible implementation, the outside of the hydrophone fixing seat is surrounded by an annular fixing plate.

[0020] The fixing plate has a preset thickness and is suitable for being installed at the detection position of the ultrasonic transducer pressure field automatic measurement device.

[0021] In a possible implementation, the hydrophone gland and the hydrophone fixing seat are coaxially arranged.

[0022] After assembly, the hydrophone fixing seat and the hydrophone gland are coaxially arranged and perpendicular to the plate surface of the fixing plate.

[0023] In a possible implementation, the top opening of the hydrophone fixing seat is recessed with a mounting groove towards the top of the hydrophone fixing seat;

[0024] The internal thread is arranged on the sidewall of the mounting groove;

[0025] The external thread is arranged outside the rotating part, and the rotating part is matched with the mounting groove, and the hydrophone fixing seat is threadedly connected with the mounting groove of the hydrophone gland through the rotating part.

[0026] In a possible implementation, the internal thread is spaced apart from the bottom of the mounting groove by a preset distance;

[0027] The rotating part is a multi-step structure, and the mounting groove is matched with the rotating part.

[0028] The hydrophone fixing frame has the following advantages: the hydrophone is fixed by the hydrophone fixing seat and the hydrophone gland, so that the hydrophone can be parallel to the Z-axis of the multi-axis moving unit during use, facilitating subsequent measurement experiments; during installation and disassembly, the hydrophone gland only needs to be simply rotated to complete the operation, and the use is convenient and simple; the hydrophone fixing frame can be applied to various types and specifications of hydrophones, and only needs to select the hydrophone fixing seat and the hydrophone gland with corresponding sizes according to the size of the hydrophone. In addition, the top opening of the hydrophone gland has a gradually reduced diameter from the bottom opening to the top opening, and the top of the hydrophone is conical, so that the internal opening of the hydrophone gland can be attached to the top of the hydrophone when the hydrophone gland rotates towards the inside of the hydrophone fixing seat, improving the overall installation stability; the coaxial hole at the bottom of the hydrophone fixing seat is tightly matched with the circumferential surface of the hydrophone probe seat, and the upper step surface of the coaxial hole at the bottom of the hydrophone fixing seat is attached to the positioning step surface at the hydrophone probe interface; since the top of the hydrophone is conical and the top opening of the hydrophone gland is conical, the hydrophone can be automatically aligned with the hydrophone fixing seat coaxially when the hydrophone gland rotates, and the axial position of the hydrophone is limited.

[0029] Other features and aspects of the present application will become apparent from the following detailed description of the example embodiments, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate example embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0031] Figure 1 A schematic diagram of the main structure of the hydrophone fixing frame according to the embodiments of the present application is shown;

[0032] Figure 2A schematic view showing a main structure of a hydrophone gland according to an embodiment of the present application is shown in FIG. 1.

[0033] Figure 3 A schematic view showing a main structure of a transducer acoustic axis adjustment device according to an embodiment of the present application is shown in FIG. 2. DETAILED DESCRIPTION

[0034] Various exemplary embodiments, features, and aspects of the present application will be described herein below with reference to the accompanying drawings. Like reference numerals in the drawings denote functionally same or similar elements. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0035] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate relative or positional relationships based on the orientation or position shown in the drawings, and are used merely for convenience of description of the present application or simplification of description, and thus cannot be construed to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be construed as limiting the present application.

[0036] In addition, the terms "first", "second", and the like are used only for the purpose of description, and cannot be construed as indicating or implying relative importance or implying the number of the indicated technical features. Thus, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise specifically limited.

[0037] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0038] In addition, in order to better illustrate the present application, numerous specific details are given in the following detailed description. Those skilled in the art will understand that the present application can be implemented without certain specific details. In some examples, methods, means, elements and circuits well known to those skilled in the art are not described in detail in order to highlight the main idea of the present application.

[0039] As Figure 1 , Figure 2 and Figure 3As shown, the hydrophone 100 mounting bracket of this embodiment includes: a hydrophone mounting base 120 and a hydrophone cover 110. The hydrophone mounting base 120 is a hollow structure with openings at both ends, suitable for placing the hydrophone 100 inside. The top opening of the hydrophone mounting base 120 has a pre-set internal thread, and the lower part of the internal thread has a smooth cylindrical surface that fits tightly with the hydrophone cover 110. The bottom cross-section is circular, and the bottom circular hole is coaxially arranged with the hydrophone mounting base 120. The hydrophone cover 110 is a hollow structure with openings at both ends, embedded in the top of the hydrophone mounting base 120 and covering the hydrophone 100. The top opening diameter of the hydrophone cover 110 is smaller than the cross-sectional diameter of the hydrophone 100, and the bottom opening has a... The external thread matches the internal thread, and a smooth cylindrical surface below the external thread is provided to fit tightly with the hydrophone mounting base 120. The hydrophone cover 110 is rotated relative to the hydrophone mounting base 120 to press against the hydrophone 100 and fix it inside the hydrophone mounting base 120. Specifically, the conical surface of the hydrophone cover 110 presses against the arc at the top of the hydrophone 100 and completes automatic centering. The bottom circular hole fits tightly with the outer positioning cylindrical surface of the probe interface of the hydrophone 100. The upper surface of the coaxial hole is attached to the positioning platform at the probe interface of the hydrophone 100, thereby ensuring that the hydrophone 100 and the hydrophone mounting base 120 are coaxial and restricting its axial position, thus firmly and tightly fixing the hydrophone 100 inside the hydrophone mounting base 120.

[0040] The hydrophone holder 120, which is open at both ends and has a hollow structure, facilitates the insertion and removal of the hydrophone 100. The internal dimensions of the hydrophone holder 120 match the dimensions of the hydrophone 100, ensuring that the hydrophone 100 can be tightly installed therein, preventing displacement or shaking during measurement. Furthermore, the bottom opening diameter of the hydrophone holder 120 is designed to be smaller than the cross-sectional diameter of the hydrophone 100, preventing it from falling off by itself after being inserted into the hydrophone holder 120, thereby further improving the stability of the fixation. The hydrophone cap 110 is a hollow structure with openings at both ends. It is positioned on top of the hydrophone mounting base 120 to further secure the hydrophone 100. The opening diameter of the top of the hydrophone cap 110 is designed to be smaller than the cross-sectional diameter of the hydrophone 100, thus fixing the hydrophone 100 inside and ensuring that the hydrophone 100 will not shake during measurement. The bottom of the hydrophone cap 110 has an external thread that matches the pre-set internal thread on the top of the hydrophone mounting base 120, allowing the hydrophone cap 110 to be tightly connected to the hydrophone mounting base 120 by rotation. When the hydrophone cap 110 is rotated to the appropriate position, it will press against the hydrophone 100 and firmly fix it inside the hydrophone mounting base 120. The hydrophone probe seat at the bottom of the hydrophone mounting base 120 is tightly fitted with a cylindrical surface that is coaxial with the outer circumference of the hydrophone mounting base 120. The hydrophone mounting base 120 and the hydrophone cover 110 are tightly fitted together to ensure that the central axis of the hydrophone is coaxial or approximately parallel to the hydrophone mounting base 120 after assembly, and to limit the position of the hydrophone axis direction.

[0041] In this embodiment, the hydrophone 100 is fixed by the hydrophone mounting base 120 and the hydrophone cover 110, so that the hydrophone 100 can be kept in an upright position during use, which is convenient for subsequent measurement experiments. During installation and disassembly, the operation can be completed simply by rotating the hydrophone cover 110. It is convenient and simple to use and can be applied to various models and specifications of hydrophones 100. Just select the appropriate size of the hydrophone mounting base 120 and hydrophone cover 110 according to the size of the hydrophone 100. Furthermore, the top opening diameter of the hydrophone cover 110 gradually decreases from the bottom opening to the top opening, and the top of the hydrophone 100 is conical. This allows the internal opening of the hydrophone cover 110 to adhere to the top of the hydrophone 100 when the hydrophone cover 110 rotates toward the inside of the hydrophone mounting base 120, thus improving the overall installation stability. Also, since the top of the hydrophone 100 and the top opening of the hydrophone cover 110 are both matching conical structures, the hydrophone 100 can remain vertical while the hydrophone cover 110 rotates.

[0042] In one specific embodiment, the top opening diameter of the hydrophone cover 110 gradually decreases from the bottom to the top of the hydrophone cover 110, enhancing the contact tightness between the top opening of the hydrophone cover 110 and the top of the hydrophone 100. As the top opening diameter of the hydrophone cover 110 gradually decreases, when the hydrophone cover 110 is rotated to the top of the hydrophone mounting base 120 and abuts against the hydrophone 100, a tighter and more uniform fixing effect can be formed, which helps to reduce the vibration and displacement of the hydrophone 100 during the measurement process, thereby ensuring the accuracy and reliability of the measurement results.

[0043] Furthermore, in this specific embodiment, as the top opening diameter of the hydrophone cover 110 gradually decreases, the hydrophone cover 110 guides and adapts to the shape of the hydrophone 100 during rotation, making the installation process smoother and more efficient. This design avoids the installation difficulties or damage to the hydrophone 100 that may occur in traditional fixing methods, providing users with a more user-friendly experience.

[0044] Furthermore, in this specific embodiment, the top opening of the hydrophone cover 110 has a tapered cross-section and is attached to the top of the hydrophone 100. When the hydrophone cover 110 is rotated to the top of the hydrophone mounting base 120 and tightly abuts against the hydrophone 100, its tapered cross-section can fit tightly against the top of the hydrophone 100, forming a stable and reliable fixing structure.

[0045] The hydrophone 100 has a conical bottom, and the bottom opening diameter of the hydrophone mounting base 120 is smaller than the cross-sectional diameter at the midpoint of the hydrophone 100's length. When the hydrophone 100 is installed in the hydrophone mounting base 120, a portion of the hydrophone 100 can pass through the bottom opening of the hydrophone mounting base 120, while the main body remains within the hydrophone mounting base 120. When the hydrophone cover 110 is threaded and rotated into the top opening of the hydrophone mounting base 120, the hydrophone cover 110 can abut against the top of the hydrophone 100 and move towards the bottom opening of the hydrophone mounting base 120, thus completing the fixed installation of the hydrophone 100 within the hydrophone mounting base 120.

[0046] In one specific embodiment, the bottom opening and inner wall of the hydrophone cover 110 are cylindrical structures with a circular cross-section, and the top opening and inner wall above the middle position of the hydrophone mounting base 120 are cylindrical structures with a circular cross-section. This allows the hydrophone 100 to be attached to the side wall of the hydrophone 100 after it is placed, so that the hydrophone 100 remains in a vertical position.

[0047] In one specific embodiment, the hydrophone cover 110 has a T-shaped cross-section, including a rotating part 112 and an adjusting part 111. Both the rotating part 112 and the adjusting part 111 are hollow cylindrical structures. The diameter of the rotating part 112 is smaller than the diameter of the adjusting part 111. The rotating part 112 has an external thread on its outer side, which matches the internal thread on the top of the hydrophone mounting base 120. The diameter of the adjusting part 111 is larger than the top opening diameter of the hydrophone mounting base 120. The hydrophone cover 110 consists of two parts: the rotating part 112 and the adjusting part 111, both of which are hollow cylindrical structures. The internal space is used for installing and securing the hydrophone 100. When rotating, the rotating part 112 can pass through the top opening of the hydrophone mounting base 120 and match the preset internal thread inside the hydrophone mounting base 120. By rotating the rotating part 112, the hydrophone cover 110 can be installed on the hydrophone mounting base 120 to achieve a stable fixing effect.

[0048] The top opening of the hydrophone cover 110 is conical, which allows the hydrophone 100 to be calibrated within the hydrophone mounting base 120 and kept vertical when it is attached to the top of the hydrophone 100.

[0049] In one specific embodiment, it further includes: a sealing ring. A sealing groove is provided on the side wall where the rotating part 112 is connected to the adjusting part 111, along the circumferential direction of the rotating part 112, and the sealing groove is an annular structure. The sealing ring is embedded in the sealing groove. When the rotating part 112 rotates to the top opening of the hydrophone mounting base 120, the sealing ring is embedded in the sealing groove, which can seal the connection position between the hydrophone mounting base 120 and the hydrophone cover 110.

[0050] In one specific embodiment, the hydrophone holder 120 is a columnar structure. The bottom opening diameter of the hydrophone holder 120 gradually decreases from the top to the bottom and is coaxial. The inside of the hydrophone holder 120 is attached to the hydrophone 100. The hydrophone 100 cannot fall off by itself after being placed in the hydrophone holder 120, thereby further improving the stability of the fixation.

[0051] In one specific embodiment, the hydrophone mounting base 120 is surrounded by an annular mounting plate with a preset thickness, which is suitable for installation at the detection position of the pressure field automated measurement device of the ultrasonic transducer 200.

[0052] In one specific embodiment, the hydrophone cover 110 and the hydrophone mounting base 120 are coaxially arranged. After assembly, the hydrophone mounting base 120 is coaxially arranged with the hydrophone cover 110 and perpendicular to the surface of the mounting plate, ensuring that the hydrophone 100 inside the hydrophone mounting base 120 remains in a vertical state.

[0053] In one specific embodiment, the top opening of the hydrophone mounting base 120 has a mounting groove recessed towards the top of the hydrophone mounting base 120. An internal thread is formed on the side wall of the mounting groove, and an external thread is formed on the outside of the rotating part 112. The rotating part 112 matches the mounting groove, and the hydrophone mounting base 120 is threadedly connected to the mounting groove of the hydrophone cover 110 through the rotating part 112.

[0054] In one specific embodiment, the internal thread is spaced at a predetermined distance from the bottom of the mounting groove, the rotating part 112 has a multi-step structure, and the mounting groove matches the rotating part 112. The multi-step structure of the rotating part 112 and the multi-step structure of the mounting groove make the installation of the internal hydrophone 100 more stable, and the contact area between the hydrophone mounting base 120 and the hydrophone cover 110 is increased, thereby improving the stability of the hydrophone 100.

[0055] In one specific embodiment, a space is reserved below the internal thread at the top of the hydrophone mounting base 120, and the rotating part 112 has an external thread below it. The reserved columnar structure matches the space below the internal thread, so that the bottom of the rotating part 112 can be completely matched with the bottom of the internal thread, further improving the installation firmness of the hydrophone mounting base 120 and the hydrophone cover 110.

[0056] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A hydrophone holder adapted for use on an automated ultrasonic transducer pressure field measurement apparatus, characterized in that, The utility model relates to a kind of water sounder fixing seat and water sounder gland, including: The water sounder fixing seat is hollow structure with both ends open, inside is suitable for placing water sounder, and the top opening of the water sounder fixing seat is provided with internal thread, the bottom section is circular, the opening aperture is adapted to greater than the outer positioning cylindrical surface of water sounder probe interface, less than the diameter of axial positioning platform; The water sounder gland is hollow structure with both ends open, embedded in the top of water sounder fixing seat covers the water sounder, and the top opening aperture of the water sounder gland is less than the cross-sectional diameter of the water sounder, bottom is provided with the external thread matched with the internal thread of the water sounder fixing seat, the water sounder is fixed in the water sounder fixing seat by rotating the water sounder gland relative to the water sounder fixing seat. The top opening aperture of the water sounder gland gradually reduces from the bottom to the top of the water sounder gland.

2. The hydrophone mount of claim 1, wherein, The top opening section of the water sounder gland is conical, attached to the top of the water sounder.

3. The hydrophone mount of claim 2, wherein, The section of the water sounder gland is "T" structure, including rotating part and adjusting part.

4. The hydrophone mount of any one of claims 1-3, wherein, The rotating part and the adjusting part are both hollow cylindrical structure. The section diameter of the rotating part is less than the section diameter of the adjusting part. The rotating part is provided with external thread, matched with the internal thread of the top of the water sounder fixing seat, and the diameter of the adjusting part is greater than the top opening aperture of the water sounder fixing seat. Also including:

5. The hydrophone mount of claim 4, wherein, Sealing ring A sealing groove is provided on the side wall connecting the rotating part and the adjusting part along the circumferential direction of the rotating part, and the sealing ring is embedded in the sealing groove. The water sounder fixing seat is cylindrical structure.

6. The hydrophone mount of any of claims 1-3, wherein, The bottom section of the water sounder fixing seat is circular along the axial direction. The bottom opening aperture of the water sounder fixing seat gradually reduces and is coaxial from the top to the bottom of the water sounder fixing seat, and the inside of the water sounder fixing seat is attached to the water sounder. The outside of the water sounder fixing seat is surrounded by an annular fixing plate.

7. The hydrophone mount of claim 6, wherein, The fixing plate has a predetermined thickness and is suitable for installation at the detection position of the ultrasonic transducer pressure field automatic measurement device. The water sounder gland and the water sounder fixing seat are coaxially arranged.

8. The hydrophone mount of claim 7, wherein, After assembly, the water sounder fixing seat and the water sounder gland are coaxially arranged and perpendicular to the plate surface of the fixing plate. The top opening of the water sounder fixing seat is recessed towards the top of the water sounder fixing seat.

9. The hydrophone mount of claim 5, wherein, The internal thread is provided on the side wall of the mounting groove. The external thread is provided on the outside of the rotating part, and the rotating part matches the mounting groove. The internal thread and the bottom of the mounting groove are separated by a predetermined distance.

10. The hydrophone mount of claim 9, wherein, The rotating part is a multi-step structure, and the mounting groove matches the rotating part. ​

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