CN115603132A - Towed linear array vibration isolation section - Google Patents

Abstract

The invention relates to the technical field of cables, in particular to a vibration isolation section of a towing line array, including a first connector, a tail connector, a vibration isolation component, a strong rope, a wire, a rubber shock absorber and a sheath; the sheath is Tubular structure; the first connector and the tail connector are correspondingly arranged at the head end and the tail end of the sheath to close the sheath; the vibration isolation component and the rubber shock absorber are all arranged in the sheath; The first connector, the tail connector, the vibration isolation assembly and the rubber shock absorber at adjacent positions are connected by a strong rope; the wire is arranged in the sheath and passes through the vibration isolation assembly and the rubber shock absorber, while one end It is connected with the first connector, and the other end is connected with the tail connector; the empty space in the sheath is also filled with filler, and the invention can improve the tensile and vibration-absorbing performance of the vibration isolation section, and solve the problem of drag line The problem that the vibration isolation section of the array is stretched after a long period of use.

Description

A drag line array vibration isolation section

technical field

The invention relates to the technical field of cables, and the specific field is a vibration isolation section of a towing line array.

Background technique

The towed line array is a line array in which the transducers are connected in a string and placed in the water at a certain depth to be towed by the ship. It is a non-rigid array, and the array cannot maintain a strict straight line in water, but a random function of time and space. Because its own linearity is not affected by the carrier, it can be made very long, the gain of the acquisition space is large, and it is less affected by the noise of the ship, thus greatly improving the ability of underwater detection and tracking of targets. With the gradual increase of the towing speed, the towing noise increases rapidly, which becomes one of the main factors limiting the detection performance of the line array at high speed. Moreover, with the development of UUV and USV and other maritime unmanned vehicles, the development of suitable The thin towing line array of small towed platforms is imminent.

But for thin towed line arrays, its main disadvantage is that its own flow noise is too large. At present, there are two main measures to reduce flow noise: one is to optimize the sound array module itself, such as reducing the diameter of the hydrophone, lengthening the hydrophone, or using several small hydrophones to form a slender hydrophone to realize the longitudinal space. Turbulence averaging; the other is to insert a vibration isolation module before and after the sound array module to suppress flow noise by attenuating vibration. Generally, the vibration isolation module is composed of a sheath, a nylon rope, a vibration isolation component, and a filler. Among them, the nylon rope and the sheath play a major role in attenuating vibration. However, in the actual use process, the nylon rope used in the vibration isolation section of the towed line array is subjected to the tension of the tow cable for a long time, and the tension of each module after the vibration isolation module is equal to the strength of each module after the first vibration isolation module. Pulled by the fluid resistance and the fluid resistance of the vibration isolation module itself, creep will occur, that is, the overall length of the nylon rope will be elongated, which will eventually lead to a decrease in the outer diameter of the array section, and the length exceeds the maximum length required by the design, resulting in It needs to be returned to the factory for maintenance, which consumes man-hours and delays the progress of the project.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a towed line array vibration isolation section, which can improve the tensile and vibration damping performance of the vibration isolation section, and solve the problem of the towed line array vibration isolation section in a long time. The problem of stretching the array after use.

In order to achieve the above object, the present invention provides the following technical solutions: a vibration isolation section of a towing line array, including a first connector, a tail connector, a vibration isolation component, a strong rope, a wire, a rubber shock absorber and a sheath; The sleeve is a tubular structure; the first connector and the tail connector are correspondingly arranged at the head end and the tail end of the sheath to close the sheath; the vibration isolation component and the rubber shock absorber are all arranged in the sheath; any The first connector, tail connector, vibration isolation assembly and rubber shock absorber located in adjacent positions are connected by a strong rope; the wire is arranged in the sheath and passes through the vibration isolation assembly and rubber shock absorber, while the wire One end is connected with the head connector, and the other end is connected with the tail connector; the empty space in the sheath is also filled with filler.

Preferably, the number of the vibration isolation components is multiple, and the plurality of vibration isolation components are arranged at intervals with the rubber shock absorber; two adjacent vibration isolation components or between the vibration isolation components and the rubber shock absorber are connected by a strong rope .

Preferably, there is a gap between the outer circumference of the rubber shock absorber and the inner wall of the sheath to accommodate the wire.

Preferably, there are multiple rubber shock absorbers, and the rubber shock absorbers are distributed at intervals in the sheath; the rubber shock absorbers are connected to adjacent components through strong ropes.

Preferably, the filler is solid gum or silicone oil or solvent naphtha.

Preferably, the sheath is made of soft viscoelastic material.

Preferably, both the head connector and the tail connector are made of titanium alloy.

Compared with the prior art, the beneficial effect of the present invention is: by setting the rubber shock absorber in the sheath, the vibration isolation components are arranged on both sides of the rubber shock absorber, and the two ends of the sheath are provided with titanium alloy first connectors , Tail connector, between the first connector and the vibration isolation component, between adjacent vibration isolation components, between the vibration isolation component and the rubber shock absorber, between the vibration isolation component and the tail connector are all connected by strong ropes, The tensile and vibration-absorbing properties of the vibration isolation section are improved, and the problem that the towed line array vibration isolation section is elongated after long-term use is solved.

Description of drawings

FIG. 1 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the head structure of the vibration isolation section of the present invention;

Fig. 3 is the structure schematic diagram of the rear portion of the vibration isolation section of the present invention;

Fig. 4 is a schematic diagram of the middle structure of the vibration isolation section of the present invention.

In the figure: 1 head connector, 2 tail connectors, 3 vibration isolation components, 4 filler, 5 strong rope, 6 rubber shock absorber, 7 sheath.

detailed description

The specific embodiments of the present invention will be 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. While the invention has been described in connection with preferred specific embodiments thereof, these embodiments are illustrative only and are not intended to limit the scope of the invention.

Specific embodiment 1: Please refer to a kind of vibration isolation section of a towed line array in Figures 1-4, wherein Figures 2 to 4 are partial enlarged schematic diagrams of the vibration isolation section of a towed line array, including: a first connector 1 and a tail connector 2 , vibration isolation assembly 3, filler 4, strong rope 5, wire (not shown in the figure), rubber shock absorber 6 and sheath 7.

The sheath 7 is a hollow tubular structure. The first connector 1 is arranged at the head end of the sheath 7 and closes the head end of the sheath 7. The tail connector 2 is arranged at the tail end of the sheath 7 and closes the sheath 7. The tail end of 7 is closed; as a preferred solution, both the first connector 1 and the tail connector 2 are made of titanium alloy, which is to improve the seawater corrosion resistance and fracture strength of the first connector 1 and the tail connector 2, so that the isolation The connection between the vibration section and the rest of the array section is more stable and stable; the rubber shock absorber 6 is arranged in the sheath 7, the rubber shock absorber 6 and the sheath 7 are coaxial, and the rubber shock absorber 6 is used as an elastic element, which is more important play the role of damping;

The number of the vibration isolation components 3 is multiple, and they are all arranged inside the sheath 7. In actual use, the number of vibration isolation components 3 is generally determined by the length of the array segment, zero buoyancy, etc.; in a preferred embodiment, The quantity of the rubber shock absorber 6 can also be multiple, and the number and spacing of the vibration isolation assembly 3 and the rubber shock absorber 6 in the vibration isolation section can be determined according to the vibration isolation requirements of the towing line array; the vibration isolation assembly 3 adopts Existing technology, the structure of which will not be described in detail in this application, the vibration isolation component 3 mainly plays the role of supporting the sheath 7 in the array section;

Between the first connector 1 and the vibration isolation assembly 3, between the adjacent vibration isolation assemblies 3, between the vibration isolation assembly 3 and the rubber shock absorber 6, between the vibration isolation assembly 3 and the tail connector 2 are all composed of Strong rope 5 is connected; the strong rope 5 is made of flexible rope with good creep resistance, between the first connector 1 and the vibration isolation assembly 3, between adjacent vibration isolation assemblies 3, and vibration isolation assembly 3 The connection between the rubber shock absorber 6 and between the vibration isolation assembly 3 and the tail connector 2 is realized by a strong rope 5. The wire (not shown in the figure) runs through the sheath 7 and one end of the wire is connected to the first connection One of the functions of the strong rope 5 is to make the structure of the vibration isolation section more stable, and the wire can realize the signal and electric transmission between the vibration isolation section and the rest of the array section; in the preferred implementation In an example, there is a gap between the outer circumference of the rubber shock absorber 6 and the inner wall of the sheath 7 to facilitate the passage of the wire.

In order to further improve the stability of this vibration isolation section, except for the vibration isolation assembly 3, the strong rope 5 and the rubber shock absorber 6 inside the sheath 7, the rest of the space is filled with a filler 4; in this embodiment, Filler 4 can choose solid glue to form a colloid array, or fill the array section with oil (silicone oil or solvent naphtha) to form a liquid array. The main purpose is to make the outer periphery of the sheath 7 smooth and reduce the influence of fluid, especially water flow, on the sheath 7; The vibration isolation component 3 and the filler 4 can be used as a damping element to reduce the drag noise intensity at the hydrophone; The tensile and vibration damping performance of this vibration isolation section.

In a preferred embodiment, the sheath 7 is made of soft viscoelastic material, and the shear wave attenuation factor of the material for making the sheath 7 is large, so as to further improve the ability of the sheath 7 to absorb and attenuate dragging noise.

Through this technical solution, rubber shock absorbers 6 are arranged in the sheath 7, vibration isolation components 3 are arranged on both sides of the rubber shock absorbers 6, and the two ends of the sheath 7 are provided with a first connector 1 and a tail connector made of titanium alloy. 2, between the first connector 1 and the vibration isolation assembly 3, between the adjacent vibration isolation assemblies 3, between the vibration isolation assembly 3 and the rubber shock absorber 6, and between the vibration isolation assembly 3 and the tail connector 2 Connected by the strong rope 5, the tensile and vibration-absorbing properties of the vibration-isolation section are improved, and the problem of elongation of the towed line array vibration-isolation section after a long period of use is solved.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. A vibration isolation section of a towing line array, characterized in that it includes a first connector (1), a tail connector (2), a vibration isolation component (3), a strong rope (5), a wire, a rubber shock absorber ( 6) and a sheath (7); the sheath (7) is a tubular structure; the first connector (1) and the tail connector (2) are correspondingly arranged at the head end and the tail end of the sheath (7) , to close the sheath (7); the vibration isolation assembly (3) and the rubber shock absorber (6) are both set in the sheath (7); The device (2), the vibration isolation assembly (3) and the rubber shock absorber (6) are connected by a strong rope (5); the wire is set in the sheath (7) and passes through the vibration isolation assembly (3) and Rubber shock absorber (6), at the same time, one end of the wire is connected with the first connector (1), and the other end is connected with the tail connector (2); the empty space in the sheath (7) is also filled with filler (4 ). 2. A vibration isolation section of a towed linear array according to claim 1, characterized in that: the number of the vibration isolation components (3) is multiple, and multiple vibration isolation components (3) and rubber shock absorbers (6 ) are arranged at intervals; two adjacent vibration isolation components (3) or between the vibration isolation components (3) and the rubber shock absorber (6) are connected by a strong rope (5). 3. The vibration isolation section of the towing linear array according to claim 1, characterized in that there is a gap between the outer circumference of the rubber shock absorber (6) and the inner wall of the sheath (7) to accommodate wire. 4. A vibration isolation section of a towed linear array according to claim 1, characterized in that: the number of the rubber shock absorbers (6) is multiple, and the multiple rubber shock absorbers (6) are in the sheath ( 7) Internal interval distribution; the rubber shock absorber (6) is connected with the adjacent components by a strong rope (5). 5. The vibration isolation section of a towed linear array according to claim 1, characterized in that: the filler (4) is solid glue or silicone oil or solvent naphtha. 6. The vibration isolation section of the towed linear array according to claim 1, characterized in that: the sheath (7) is made of soft viscoelastic material. 7. The vibration isolation section of the trailing linear array according to claim 1, characterized in that: the first connector (1) and the tail connector (2) are both made of titanium alloy.

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