Integrated vibration reduction mounting structure of hydrophone and sound baffle

Abstract

The invention belongs to the technical field of underwater acoustic transducers, and particularly relates to a hydrophone and sound baffle integrated vibration reduction mounting structure which comprises a hydrophone, a vibration reduction frame and a sound baffle, a containing opening is formed in the top of the vibration reduction frame, the two sides of the vibration reduction frame are through, the hydrophone is mounted in the containing opening, and the sound baffle is mounted in the containing opening. The vibration damping frame body and the rubber packaging structure outside the hydrophone are integrally vulcanized and formed, the sound baffle is mounted in the vibration damping frame body and penetrates out of the two sides of the vibration damping frame body, mounting holes for accommodating the hydrophone are formed in the sound baffle, and the tail part of the hydrophone sequentially penetrates through the mounting holes of the sound baffle and penetrates out of the vibration damping frame body. The connection reliability between the two parts is improved, the stability is improved, and meanwhile, a watertight packaging function and a rubber vibration reduction function are provided for a sensing element in the hydrophone.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater acoustic transducers, and in particular relates to an integrated vibration reduction mounting structure of a hydrophone and an acoustic baffle. Background Art

[0002] A hydrophone is a sonar sensor, a device used to receive sound wave vibrations and convert them into electrical signals, and a baffle is a structure used to increase the sensing gain of a hydrophone.

[0003] Common installation methods of hydrophones and sound baffles are shown in the following figure. Figure 1 As shown, a is a cylindrical hydrophone and a sound baffle installed through a rear end support, b is a spherical hydrophone and a sound baffle installed through a mounting bracket, and c is a square hydrophone and a sound baffle installed through screws and nuts. These installation methods all require additional supports or fasteners, and the vibration reduction effect is relatively poor.

[0004] At present, the installation form of hydrophones and acoustic baffles is: the hydrophone is rigidly connected to the acoustic baffle, and then connected to the base array frame. Generally, a vibration reduction structure is added between the base array frame and the ship to reduce the interference of the ship's own vibration on the hydrophone. This form often does not have vibration reduction measures for a single hydrophone, especially for the low-frequency shaking of the ship or the vibration of the ship's power mechanism, which often cause great interference to the detection of the hydrophone. In addition, the space inside the ship is often small, and there is no large space to implement an independent vibration reduction structure for the hydrophone. Summary of the invention

[0005] The present invention aims to provide an integrated vibration reduction mounting structure of a hydrophone and a sound baffle, so as to solve the deficiencies existing in the prior art.

[0006] The present invention provides the following technical solutions: An integrated vibration-damping mounting structure of a hydrophone and a sound baffle comprises a hydrophone, a vibration-damping frame and a sound baffle, wherein a receiving opening is provided on the top of the vibration-damping frame, and two sides of the vibration-damping frame are connected, the hydrophone is mounted in the receiving opening, the sound baffle is mounted in the vibration-damping frame and passes through two sides of the vibration-damping frame, a mounting hole for accommodating the hydrophone is provided on the sound baffle, and a tail of the hydrophone passes through the mounting hole of the sound baffle in sequence and passes through the outside of the vibration-damping frame.

[0007] Preferably, each end surface of the vibration-damping frame is hollowed out.

[0008] Preferably, the vibration-damping frame is made of rubber material, and the vibration-damping frame and the rubber packaging structure outside the hydrophone are integrally vulcanized.

[0009] Preferably, the overall thickness of the sound baffle is slightly greater than the internal height of the vibration damping frame.

[0010] Preferably, the hydrophone is a cylindrical hydrophone or a square planar hydrophone.

[0011] Preferably, the cross section of the receiving opening is circular or square.

[0012] Preferably, one end of the sound baffle is connected to the base array frame.

[0013] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art: 1) The vibration-damping frame and the rubber packaging structure outside the hydrophone are integrally vulcanized to improve the connection reliability and stability between the two, while providing watertight packaging and rubber vibration reduction functions for the sensing elements inside the hydrophone; 2) The internal height of the vibration-damping frame is slightly smaller than the overall thickness of the sound baffle, and the elasticity of rubber is used to achieve fixed installation on the sound baffle. The hydrophone passes through the sound baffle to further ensure that there is no displacement between the hydrophone and the sound baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the common installation method of hydrophones and sound baffles; Figure 2 It is a schematic diagram of the overall structure of a cylindrical hydrophone with a sound baffle and a vibration reduction mounting structure of the present invention; Figure 3 It is a structural schematic diagram of a cylindrical hydrophone and a vibration reduction mounting structure of the present invention; Figure 4 It is a three-view drawing of the cylindrical hydrophone and the vibration reduction mounting structure of the present invention; Figure 5 It is a schematic diagram of the overall structure of a square planar hydrophone with a sound baffle and a vibration reduction mounting structure of the present invention; Figure 6 It is a structural schematic diagram of a square planar hydrophone and a vibration reduction mounting structure of the present invention; Figure 7 It is a three-view drawing of the square planar hydrophone and the vibration reduction mounting structure of the present invention.

[0015] The following are marked in the figure: 1-hydrophone; 2-vibration-damping frame; 3-sound baffle; 4-accommodating opening. DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative and are not intended to limit the scope of the present invention.

[0017] When the hydrophone 1 is a cylindrical hydrophone, the cross section of the receiving opening 4 is circular. Figure 2-4 As shown, an integrated vibration reduction mounting structure of a hydrophone and a sound baffle comprises a hydrophone 1, a vibration reduction frame 2 and a sound baffle 3. The vibration reduction frame 2 is provided with a receiving opening 4 on the top, and the two sides of the vibration reduction frame 2 are penetrated. The hydrophone 1 is mounted in the receiving opening 4, and the sound baffle 3 is mounted in the vibration reduction frame 2 and passes through from the two sides of the vibration reduction frame 2. The sound baffle 3 is provided with a mounting hole for accommodating the hydrophone 1. The tail of the hydrophone 1 passes through the mounting hole of the sound baffle 3 in sequence and passes through the outside of the vibration reduction frame 2, so as to ensure that the hydrophone 1 and the sound baffle 3 will not shift.

[0018] When the hydrophone 1 is a square planar hydrophone, the cross section of the receiving opening 4 is square. Figure 5-6 As shown, an integrated vibration reduction mounting structure of a hydrophone and a sound baffle comprises a hydrophone 1, a vibration reduction frame 2 and a sound baffle 3. The vibration reduction frame 2 is provided with a receiving opening 4 on the top, and the two sides of the vibration reduction frame 2 are penetrated. The hydrophone 1 is mounted in the receiving opening 4, and the sound baffle 3 is mounted in the vibration reduction frame 2 and passes through from the two sides of the vibration reduction frame 2. The sound baffle 3 is provided with a mounting hole for accommodating the hydrophone 1. The tail of the hydrophone 1 passes through the mounting hole of the sound baffle 3 in sequence and passes through the outside of the vibration reduction frame 2, so as to ensure that the hydrophone 1 and the sound baffle 3 will not shift.

[0019] Specifically, each end surface of the vibration reduction frame 2 is hollowed out, which is beneficial to increase the vibration reduction effect later.

[0020] Specifically, the vibration-damping frame 2 is made of rubber material, and the vibration-damping frame 2 and the rubber packaging structure outside the hydrophone 1 are integrally vulcanized and molded, which is beneficial to improving the connection reliability between the two and increasing stability.

[0021] Specifically, the overall thickness of the acoustic baffle 3 is slightly greater than the internal height of the vibration reduction frame 2, that is, the internal height of the vibration reduction frame 2 is slightly less than the overall thickness of the acoustic baffle 3, so that the rubber elasticity of the vibration reduction frame 2 can be used to achieve fixed installation with the acoustic baffle 3. The acoustic baffle 3 also has a certain vibration reduction effect, but its main effect is to reflect the sound wave vibration to the hydrophone 1 to improve the perception effect of the hydrophone 1. This structure also uses the size of the acoustic baffle 3 in the thickness direction to increase the low-frequency vibration reduction effect of the vibration reduction frame 2.

[0022] Specifically, one end of the sound baffle 3 is connected to the base array frame, the base array frame is installed on the ship, and the hydrophone 1 is installed on the base array frame through the sound baffle 3.

[0023] The specific working principle of the present invention is: The internal height of the vibration-damping frame 2 is slightly smaller than the overall thickness of the stack of acoustic baffles 3, and the rubber elasticity is used to achieve fixed installation with the acoustic baffles 3. The hydrophone 1 is connected to the hull or the base array frame on the hull through the acoustic baffles 3. When the hull vibrates, the vibration transmitted to the hydrophone 1 will be absorbed by the rubber vibration-damping structure of the vibration-damping frame 2 to achieve a vibration-damping effect. At the same time, the acoustic baffles 3 also have a certain vibration-damping effect, but their main effect is to reflect the sound wave vibration to the hydrophone 1, thereby improving the perception effect of the hydrophone 1.

[0024] The above description is only a preferred implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated vibration reduction mounting structure of a hydrophone and a sound baffle, characterized in that: The invention comprises a hydrophone (1), a vibration-damping frame (2) and a sound baffle (3); the top of the vibration-damping frame (2) is provided with a receiving opening (4), and the two sides of the vibration-damping frame (2) are connected; the hydrophone (1) is installed in the receiving opening (4); the sound baffle (3) is installed in the vibration-damping frame (2) and passes through the two sides of the vibration-damping frame (2); the sound baffle (3) is provided with a mounting hole for accommodating the hydrophone (1); the tail of the hydrophone (1) passes through the mounting holes of the sound baffle (3) in sequence and passes out of the vibration-damping frame (2).

2. The integrated vibration reduction mounting structure of a hydrophone and a sound baffle according to claim 1, characterized in that: Each end surface of the vibration-damping frame (2) is hollowed out.

3. The integrated vibration reduction mounting structure of a hydrophone and a sound baffle according to claim 1, characterized in that: The vibration-damping frame (2) is made of rubber material, and the vibration-damping frame (2) and the rubber packaging structure outside the hydrophone (1) are integrally vulcanized and formed.

4. The integrated vibration reduction mounting structure of a hydrophone and a sound baffle according to claim 1, characterized in that: The overall thickness of the sound baffle (3) is slightly greater than the internal height of the vibration reduction frame (2).

5. The integrated vibration reduction mounting structure of a hydrophone and a sound baffle according to claim 1, characterized in that: The hydrophone (1) is a cylindrical hydrophone or a square planar hydrophone.

6. The integrated vibration reduction mounting structure of a hydrophone and a sound baffle according to claim 1, characterized in that: The cross section of the receiving opening (4) is circular or square.

7. The integrated vibration reduction mounting structure of a hydrophone and a sound baffle according to claim 1, characterized in that: One end of the sound baffle (3) is connected to the base array frame.

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