Flexible braided layer reinforced fiber optic hydrophone array

Abstract

The application discloses a flexible braided layer reinforced optical fiber hydrophone array, an inner protection assembly is sleeved on the outside of a layer cable, and a pipe cable joint is arranged at the end of the inner protection assembly; the pipe cable joint is provided with a cable through hole which is offset from the axis of the inner protection assembly, the cable through hole is used for passing and fixing the layer cable so that the layer cable is arranged on one side, a hydrophone probe is arranged on the two sides of the layer cable in the inner protection assembly, a framework support assembly is arranged in the inner protection assembly, the two ends of a sealing joint assembly are used for sealingly inserting the pipe cable joint, a flexible braided outer layer is integrally braided by non-metal flexible braided members and comprises first and second braided sections with different radial dimensions, and the first and second braided sections are respectively and correspondingly wrapped on the inner protection assembly and the sealing joint assembly, so that the tensile property of the array is remarkably improved, the wear resistance of the outer surface of the array is remarkably improved, and the integrally braided forming of the flexible braided outer layer is easy to realize.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of light sensing detection system, and particularly relates to a flexible braided layer reinforced fiber-optic hydrophone array. BACKGROUND

[0002] The fiber-optic hydrophone is an underwater acoustic signal sensor based on fiber-optic and optoelectronic technology. It converts underwater acoustic vibration into optical signals through high-sensitivity optical coherent detection, and transmits the optical signals to a signal processing system through an optical fiber to extract acoustic signal information. It has the characteristics of high sensitivity and good frequency response, and is suitable for long-distance and large-scale monitoring due to the use of optical fiber as an information carrier.

[0003] At present, the fiber-optic hydrophone and its array have become the development direction of the underwater part of passive sonar, and are the most potential equipment for ocean exploration and monitoring of weak acoustic field signals. However, when the fiber-optic hydrophone array is deployed underwater, due to the self-weight of the product and the action of environmental load, the array will bear a large tensile load. In specific engineering deployment, engineering equipment such as tire machines or drum machines is often used to apply tension, resulting in a large friction force on the surface of the array. The existing array mostly uses galvanized steel wires of layer-twisted cables to improve the tensile length, but the wear resistance of the traditional armored sleeve of the outermost layer is limited, which may cause a risk of rupture. SUMMARY

[0004] In view of the above defects or shortcomings, the present application provides a flexible braided layer reinforced fiber-optic hydrophone array, aiming to solve the technical problem that the tensile performance and wear resistance of the existing array need to be improved.

[0005] To achieve the above-mentioned purpose, the present application provides a flexible braided layer reinforced fiber-optic hydrophone array, wherein the flexible braided layer reinforced fiber-optic hydrophone array comprises a layer-twisted cable, an inner protection assembly, a hydrophone probe, a skeleton support assembly, a sealing joint assembly and a flexible braided outer layer. The layer-twisted cable comprises a fiber tube and a tensile metal wire arranged in a layer-twisted manner. The inner protection assembly is sleeved on the outer side of the layer-twisted cable and has a pipe-cable joint at the end. The outer side of the pipe-cable joint is provided for the inner protection assembly to be sleeved. The pipe-cable joint is provided with a cable through hole offset from the axis of the inner protection assembly. The cable through hole is provided for the layer-twisted cable to be arranged and fixed, so that the layer-twisted cable is arranged on one side in the inner protection assembly. The hydrophone probe is connected with the optical fiber in the fiber tube and is arranged on both sides of the layer-twisted cable in the inner protection assembly. The skeleton support assembly is arranged in the inner protection assembly and is used for supporting the layer-twisted cable. The two ends of the sealing joint assembly are provided for the pipe-cable joint to be sealingly inserted away from the inner protection assembly. The sealing joint assembly is provided with a fiber disc cavity for the optical fiber to be inserted and connected. The flexible braided outer layer is integrally braided with a non-metal flexible braided member and comprises a first braided segment and a second braided segment with different radial dimensions. The first braided segment and the second braided segment are respectively and correspondingly wrapped on the inner protection assembly and the sealing joint assembly.

[0006] In an embodiment of the present application, the non-metal flexible braid is a fiber flexible braid or a polymer material flexible braid.

[0007] In an embodiment of the present application, the non-metal flexible braid is one of aramid braid, polyester braid, polypropylene braid and polyethylene braid.

[0008] In an embodiment of the present application, the non-metal flexible braid is in a rope shape or a strip shape.

[0009] In an embodiment of the present application, the non-metal flexible braid is provided with a glue layer.

[0010] In an embodiment of the present application, the pipe-cable joint comprises an outer joint and an inner plug, two ends of the outer joint are respectively provided with the inner protection assembly and the sealing joint assembly for corresponding sleeving, the outer joint is provided with a cable through hole, the cable through hole comprises a plug hole section and a fixing hole section arranged in sequence in the direction from the inner protection assembly to the sealing joint assembly, the plug hole section is provided with the inner plug, the inner plug is provided with a plug hole for the layer-stranded cable to pass through and extend into the fixing hole section, and the fixing hole section is provided with a clamping glue layer for fixing the tensile metal wire in the layer-stranded cable.

[0011] In an embodiment of the present application, the axial section of the fixing hole section is arranged in a tapered manner in the direction towards the plug hole section, and a flange hole section is arranged between the fixing hole section and the plug hole section, and the clamping glue layer is used to clamp the tensile metal wire in the fixing hole section when the layer-stranded cable is subjected to a tensile force in the direction towards the plug hole section.

[0012] In an embodiment of the present application, the tensile metal wire is arranged in a bent manner in the fixing hole section.

[0013] In an embodiment of the present application, the first end of the pipe-cable joint for sleeving the inner protection assembly is provided with a stepped portion, the stepped portion has a mounting side for sleeving the inner protection assembly and a stop end face abutting against the end of the inner protection assembly, and the outer side of the inner protection assembly is provided with a buckling ring for buckling the inner protection assembly on the pipe-cable joint.

[0014] In an embodiment of the present application, a first sealing ring is arranged between the pipe-cable joint and the sealing joint assembly, and the sealing joint assembly is detachably connected with the pipe-cable joint through threaded fasteners, the threaded fasteners are arranged on the side of the first sealing ring away from the disc fiber cavity, the number of the threaded fasteners is multiple, and the multiple threaded fasteners are arranged in a circle.

[0015] In an embodiment of the present application, the sealing joint assembly comprises a pressure-resistant shell and a sealing cover, two ends of the pressure-resistant shell are respectively provided with a first insertion cavity and a second insertion cavity for sealingly inserting different pipe cable joints, the pressure-resistant shell is sequentially provided with a cover cavity and a disc fiber cavity in the radial direction between the first insertion cavity and the second insertion cavity, the disc fiber cavity and the cover cavity are respectively arranged on the inner and outer sides of the pressure-resistant shell, the cover cavity is concave in the pressure-resistant shell, the pressure-resistant shell is provided with a sealing opening communicating the disc fiber cavity and the cover cavity, and the sealing cover is detachably arranged in the cover cavity to seal the sealing opening and is arranged flush with the outer contour of the pressure-resistant shell.

[0016] In an embodiment of the present application, the pressure-resistant shell is provided with a sealing plate portion extending from the periphery of the sealing opening towards the disc fiber cavity, the sealing cover comprises a cover body and a sealing columnar portion extending from the cover body, the cover body is arranged in the cover cavity and is arranged flush with the outer contour of the pressure-resistant shell, the sealing columnar portion extends into a cavity formed by the sealing plate portion and the sealing opening, and a second sealing ring is arranged between the sealing columnar portion and the sealing plate portion, and a third sealing ring is further arranged between the periphery of the sealing opening and the cover body.

[0017] In an embodiment of the present application, the inner protection assembly comprises an inner sleeve and a hydrophone protection cover, the inner sleeve is sleeved on the outer side of the layer cable and is provided with a pipe cable joint at the end portion, the hydrophone protection cover is sleeved on the outer side of the inner sleeve corresponding to the hydrophone probe, and the portion of the inner sleeve that is staggered with the hydrophone protection cover is arranged in an expanded state under the support of the skeleton support assembly.

[0018] In an embodiment of the present application, the skeleton support assembly comprises a support skeleton body and a medium filling layer, the support skeleton body is sleeved on the layer cable, and the medium filling layer is formed by injecting a filling material and is used for supporting the expansion of the inner sleeve.

[0019] Through the above technical solution, the flexible braided layer reinforced optical fiber hydrophone array provided by the present application has the following beneficial effects:

[0020] When the flexible braided layer reinforced fiber optic hydrophone array is used, the inner protection assembly is sleeved outside the layer stranded cable, and the inner protection assembly is sleeved outside the outer side of the pipe cable joint, the hydrophone probe is connected with the optical fiber of the layer stranded cable, the skeleton support assembly is arranged in the inner protection assembly and is used for supporting the layer stranded cable, the two ends of the sealing joint assembly are used for sealingly inserting the end of the pipe cable joint away from the inner protection assembly, the sealing joint assembly is provided with a fiber disc cavity for the optical fiber to extend into and be connected, and the flexible braided outer layer is integrally braided by the non-metal flexible braided member and includes the first braided section and the second braided section with different radial dimensions, and the first braided section and the second braided section are respectively and correspondingly wrapped on the inner protection assembly and the sealing joint assembly. By braiding the flexible braided outer layer which is closely attached to the inner protection assembly and the sealing joint assembly on the outermost layer of the fiber optic hydrophone array, the non-metal flexible braided member has excellent bending resistance and wear resistance, so that the tensile resistance of the array is improved, and the wear resistance of the outer surface of the array is also improved, and the risk of rupture is avoided. In addition, the cable through hole is arranged on the axis of the pipe cable joint away from the inner protection assembly, the layer stranded cable is arranged in the inner protection assembly on one side, the hydrophone probe is connected with the optical fiber and arranged on both sides of the layer stranded cable in the inner protection assembly, that is, the inner protection assembly sleeved on the pipe cable joint is a straight pipe, that is, in the entire fiber optic hydrophone array, only the sealing joint assembly has a small radial size mutation, and the length of the sealing joint assembly is short, so that the flexible braided outer layer is integrally braided and formed.

[0021] Other features and advantages of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the embodiments of the application, and constitute a part of the specification, and are used to explain the embodiments of the application together with the following detailed description, but do not constitute a limitation on the embodiments of the application. For those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor. In the drawings:

[0023] Figure 1 is a structural schematic view of a flexible braided layer reinforced fiber optic hydrophone array according to an embodiment of the application;

[0024] Figure 2 is a sectional structural schematic view of a flexible braided layer reinforced fiber optic hydrophone array according to an embodiment of the application;

[0025] Figure 3is another schematic view of a profile structure of a flexible braided layer reinforced fiber optic hydrophone array according to an embodiment of the present application;

[0026] Figure 4 is a schematic view of a part of the structure in Figure 3 ;

[0027] Figure 5 is a schematic view of a structure of an outer joint according to an embodiment of the present application;

[0028] Figure 6 is an exploded schematic view of a pipe cable joint and a sealing joint assembly according to an embodiment of the present application;

[0029] Figure 7 is an exploded schematic view of a sealing joint assembly according to an embodiment of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 100, layer stranded cable; 200, inner protection assembly; 210, inner sleeve; 211, buckling ring; 220, hydrophone protection cover; 300, pipe cable joint; 310, outer joint; 311, cable through hole; 312, plug hole section; 313, fixing hole section; 314, flange hole section; 315, stepped portion; 316, first sealing ring; 320, inner plug; 400, framework support assembly; 410, support framework body; 420, medium filling layer; 500, sealing joint assembly; 510, pressure-resistant shell; 511, disc fiber cavity; 512, threaded fastener; 513, first plug-in cavity; 514, second plug-in cavity; 515, cover cavity; 516, sealing opening; 517, sealing plate portion; 520, sealing cover; 521, cover body; 522, sealing columnar portion; 523, second sealing ring; 524, third sealing ring; 600, flexible braided outer layer; 610, first braided section; 620, second braided section; 630, variable-diameter braided section. DETAILED DESCRIPTION

[0032] The specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0033] The flexible braided layer reinforced fiber optic hydrophone array of the present application will be described below with reference to the accompanying drawings.

[0034] As shown in Figures 1 to 3 , the present application provides a flexible braided layer reinforced fiber optic hydrophone array, wherein the flexible braided layer reinforced fiber optic hydrophone array comprises:

[0035] a layer stranded cable 100 comprising a fiber tube and a tensile metal wire arranged in a layer strand;

[0036] The inner protection assembly 200 is sleeved on the outer side of the layer stranded cable 100 and is provided with a pipe cable joint 300 at the end. The outer side of the pipe cable joint 300 is sleeved with the inner protection assembly 200. The pipe cable joint 300 is provided with a cable through hole 311 deviating from the axis of the inner protection assembly 200. The layer stranded cable 100 is sleeved and fixed in the cable through hole 311, so that the layer stranded cable 100 is arranged on one side in the inner protection assembly 200;

[0037] The hydrophone probe is connected with the optical fiber in the optical fiber tube and is arranged on both sides of the layer stranded cable 100 in the inner protection assembly 200;

[0038] The skeleton support assembly 400 is arranged in the inner protection assembly 200 and is used for supporting the layer stranded cable 100;

[0039] The sealing joint assembly 500 is provided with a disc fiber cavity 511, which can be used for the optical fiber to extend into and be connected.

[0040] The flexible woven outer layer 600 is integrally woven with non-metal flexible woven members and includes first and second woven segments 610 and 620 with different radial dimensions. The first and second woven segments 610 and 620 are respectively and correspondingly wrapped on the inner protection assembly 200 and the sealing joint assembly 500.

[0041] When the flexible braided layer reinforced fiber optic hydrophone array is used, the inner protection assembly 200 is sleeved outside the layer stranded cable 100 and the end is provided with the umbilical joint 300, the outer side of the umbilical joint 300 is sleeved with the inner protection assembly 200, the hydrophone probe is connected with the optical fiber of the layer stranded cable 100, the skeleton support assembly 400 is arranged in the inner protection assembly 200 and is used for supporting the layer stranded cable 100, the two ends of the sealing joint assembly 500 can be sealed and inserted with the end of the umbilical joint 300 away from the inner protection assembly 200, the sealing joint assembly 500 is provided with the fiber disc cavity 511 which can be used for the optical fiber to extend and connect, the flexible braided outer layer 600 is integrally braided with non-metal flexible braided members and includes the first braided section 610 and the second braided section 620 with different radial dimensions, and the first braided section 610 and the second braided section 620 are respectively and correspondingly wrapped on the inner protection assembly 200 and the sealing joint assembly 500, so that a layer of flexible braided outer layer 600 closely wrapped with the inner protection assembly 200 and the sealing joint assembly 500 is braided on the outermost layer of the fiber optic hydrophone array, and since the non-metal flexible braided member has excellent bending resistance and wear resistance, the tensile property of the array is significantly improved, and the wear resistance of the outer surface of the array is also significantly improved, thereby avoiding the risk of rupture. In addition, the cable through hole 311 is arranged on the axis of the umbilical joint 300 away from the inner protection assembly 200, the layer stranded cable 100 is arranged on one side in the inner protection assembly 200, the hydrophone probe is connected with the optical fiber and arranged on both sides of the layer stranded cable 100 in the inner protection assembly 200, that is, the inner protection assembly 200 sleeved with the umbilical joint 300 is a straight pipe, that is, in the entire fiber optic hydrophone array, only the sealing joint assembly 500 has a small radial size mutation, and the length of the sealing joint assembly 500 is short, thereby facilitating the integrated braiding of the flexible braided outer layer 600.

[0042] Specifically, since the sealing joint assembly 500 needs to realize the connection of the optical fiber and the accommodation of the optical device, the radial dimension of the sealing joint assembly 500 should be greater than that of the inner protection assembly 200, then the variable-diameter braided section 630 is arranged between the first braided section 610 and the second braided section 620 to realize the transition of the two radial dimensions, and the variable-diameter braided section 630 can be arranged corresponding to the umbilical joint 300.

[0043] It needs to be particularly pointed out that in the prior art, the fiber optic hydrophone array is generally arranged on the central axis of the array, and in order to have sufficient space to arrange the hydrophone probe, the radial dimension of the array needs to be changed at a position before the hydrophone probe, that is, the length of the change in the prior art is longer, and the radial dimension of the joint structure at the change position is also larger, thereby causing it difficult to realize the integrated weaving of the flexible woven outer layer 600.

[0044] In an embodiment of the present application, the non-metal flexible woven member is a fiber flexible woven member or a high polymer material flexible woven member, that is, the material of the non-metal flexible woven member can be fiber or high polymer material. Since both fiber and high polymer material have light weight and excellent tensile strength and wear resistance, the non-metal flexible woven member also has the above-mentioned properties. Of course, the present application is not limited to this, and the non-metal flexible woven member can also be other materials with low density, high strength, and considering the requirements of weaving. Specifically, the non-metal flexible woven member is one of aramid woven member, polyester woven member, polypropylene woven member, and polyethylene woven member.

[0045] In an embodiment of the present application, the non-metal flexible woven member is in the form of a rope or a strip, that is, the non-metal flexible woven member can be a woven rope or a woven strip, thereby facilitating weaving.

[0046] In an embodiment of the present application, the non-metal flexible woven member is provided with a glue layer. Specifically, after the non-metal flexible woven member is prepared, it can be immersed in a glue solution, so that the outer layer of the non-metal flexible woven member is provided with a glue layer and the inner part is infiltrated with glue solution, thereby making the forming effect better during integrated weaving, and further significantly improving the wear resistance during array arrangement.

[0047] Referring to Figures 3 to 5 In an embodiment of the present application, the pipe cable joint 300 includes an outer joint 310 and an inner plug 320, the two ends of the outer joint 310 are respectively provided with the inner protection assembly 200 and the sealing joint assembly 500 for one-to-one corresponding sleeve connection, the outer joint 310 is provided with a cable through hole 311, the cable through hole 311 includes a plug hole section 312 and a fixed hole section 313 arranged in sequence from the inner protection assembly 200 to the sealing joint assembly 500, the plug hole section 312 is provided with the inner plug 320, the inner plug 320 is provided with a plug hole for the layer stranded cable 100 to pass through and extend into the fixed hole section 313, and the fixed hole section 313 is provided with a clamping glue layer for fixing the tensile metal wire in the layer stranded cable 100. Then, by injecting glue into the fixed hole section 313, the clamping glue layer for fixing the tensile metal wire in the layer stranded cable 100 can be formed, the fixing method is simple and effective, and the inner plug 320 can realize the plugging of the clamping glue layer. Further, the clamping glue layer includes but is not limited to an epoxy resin glue layer, and other adhesive layers that can be bonded are also possible.

[0048] In an embodiment of the present application, the axial section of the fixed hole section 313 is tapered in the direction towards the plug hole section 312, i.e. the fixed hole section 313 is wedge-shaped, and a flange hole section 314 is arranged between the fixed hole section 313 and the plug hole section 312, i.e. the side of the flange hole section 314 arranged towards the fixed hole section 313 can abut against the stopper of the clamping rubber layer in the fixed hole section 313, and the clamping rubber layer is used to clamp the tensile metal wire in the fixed hole section 313 when a pulling force is applied to the layer-stranded cable 100 in the direction towards the plug hole section 312. That is, after the rubber is injected into the fixed hole section 313 and during the solidification process, a pulling force can be applied to the layer-stranded cable 100 in the direction towards the plug hole section 312, and since the tensile metal wire is embedded in the clamping rubber layer, the clamping rubber layer can also be pulled, and since the fixed hole section 313 is wedge-shaped and has the flange hole section 314, the clamping rubber layer can be pulled tighter and tighter until it cannot be pulled any more, thereby achieving the tensioning and fixing of the layer-stranded cable 100.

[0049] Specifically, when the rubber is injected into the fixed hole section 313, since there is a gap between the inner wall of the flange hole section 314 and the layer-stranded cable 100, the rubber liquid can flow into the plug hole section 312, so that the inner wall of the plug hole section 312 and the inner plug 320 can also be provided with a rubber layer.

[0050] In an embodiment of the present application, the tensile metal wire is arranged in a bent manner in the fixed hole section 313. By bending the tensile metal wire, the pulling force applied by the tensile metal wire to the clamping rubber layer can be increased, so as to improve the tensioning degree of the clamping rubber layer.

[0051] In an embodiment of the present application, the first end of the pipe cable joint 300, to which the inner protection assembly 200 is sleeved, is provided with a stepped portion 315, which has a mounting side for sleeving the inner protection assembly 200 and a stop end surface abutting against the inner protection assembly 200 in the end direction. That is, by adding the stepped portion 315, on the one hand, the butt joint of the inner protection assembly 200 and the sealing joint assembly 500 with different radial dimensions can be facilitated, and on the other hand, the inner protection assembly 200 is axially positioned. Specifically, the stepped portion 315 is arranged on the outer joint 310 of the pipe cable joint 300. Meanwhile, the outer side of the inner protection assembly 200 is provided with a buckling ring 211 to buckle the inner protection assembly 200 on the pipe cable joint 300. By adding the buckling ring 211, the sealing connection of the inner protection assembly 200 and the pipe cable joint 300 can be achieved. More specifically, the outer joint 310 of the pipe cable joint 300 can be provided with a fourth sealing ring, which is arranged between the outer joint 310 and the inner sleeve 210 of the inner protection assembly 200, or a glue groove is formed on the outer joint 310. When the filling glue of the medium filling layer 420 is injected into the inner sleeve 210, the filling glue can also flow into the glue groove to achieve the sealing and bonding of the outer joint 310 and the inner sleeve 210.

[0052] In an embodiment of the present application, the first sealing ring 316 is arranged between the pipe cable joint 300 and the sealing joint assembly 500, and the sealing joint assembly 500 is detachably connected with the pipe cable joint 300 through the threaded fasteners 512. The threaded fasteners 512 are arranged on the side of the first sealing ring 316 away from the disc fiber cavity 511, and the number of the threaded fasteners 512 is multiple, and the multiple threaded fasteners 512 are arranged in a circle. That is, by adding the first sealing ring 316 and the threaded fasteners 512, the sealing connection of the pipe cable joint 300 and the sealing joint assembly 500 can be achieved. Further, the outer joint 310 of the pipe cable joint 300 is provided with a first sealing groove for mounting the first sealing ring 316. After the outer joint 310 provided with the first sealing ring 316 is inserted into the end of the sealing joint assembly 500, the multiple threaded fasteners 512 can be used to detachably connect the outer joint 310 and the sealing joint assembly 500, so as to enhance the connection strength. Further, the number of the first sealing ring 316 can be at least two, preferably two, and the first sealing ring 316 can be an O-shaped sealing ring, and the threaded fasteners 512 can be high-strength fastening screws.

[0053] Referring to Figure 3 , Figure 4 , Figure 6 and Figure 7In an embodiment of the present application, the sealing joint assembly 500 comprises a pressure-resistant shell 510 and a sealing cover 520, the pressure-resistant shell 510 is provided with a first insertion cavity 513 and a second insertion cavity 514 at two ends thereof for sealingly inserting different pipe cable joints 300, the pressure-resistant shell 510 is sequentially provided with a cover cavity 515 and a disc fiber cavity 511 in the radial direction between the first insertion cavity 513 and the second insertion cavity 514, the disc fiber cavity 511 and the cover cavity 515 are respectively arranged on the inner and outer sides of the pressure-resistant shell 510, the cover cavity 515 is concave in the pressure-resistant shell 510, the pressure-resistant shell 510 is provided with a sealing port 516 communicating the disc fiber cavity 511 and the cover cavity 515, and the sealing cover 520 is detachably arranged in the cover cavity 515 to seal the sealing port 516 and is arranged flush with the outer contour of the pressure-resistant shell 510. The sealing port 516 is added to enable the optical fiber connection in the disc fiber cavity 511 and the optical device to be overhauled or replaced through the sealing port 516, the cover cavity 515 is concave in the pressure-resistant shell 510, and when the sealing cover 520 is arranged in the cover cavity 515, it is arranged flush with the outer contour of the pressure-resistant shell 510, so that the sealing joint assembly 500 has a consistent radial dimension throughout the length and does not have a sudden change in the radial dimension, so that the radial dimension of the second woven section 620 wrapped around the sealing joint assembly 500 is consistent, facilitating the weaving and molding.

[0054] In an embodiment of the present application, the pressure-resistant shell 510 is provided with a sealing plate portion 517 extending from the periphery of the sealing port 516 towards the disc fiber cavity 511, the sealing cover 520 comprises a cover body 521 and a sealing columnar portion 522 extending from the cover body 521, the cover body 521 is arranged in the cover cavity 515 and is arranged flush with the outer contour of the pressure-resistant shell 510, the sealing columnar portion 522 extends into the cavity formed by the sealing plate portion 517 surrounding the sealing port 516, a second sealing ring 523 is arranged between the sealing columnar portion 522 and the sealing plate portion 517, and a third sealing ring 524 is further arranged between the periphery of the sealing port 516 and the cover body 521. The sealing plate portion 517 and the sealing columnar portion 522 are added and the second sealing ring 523 is arranged therebetween to realize the insertion sealing between the sealing cover 520 and the pressure-resistant shell 510, and the third sealing ring 524 is cooperated with the periphery of the sealing port 516 and the cover body 521 to realize the sealing from two directions, thereby further improving the reliability of the sealing. Specifically, the sealing columnar portion 522 is provided with a second sealing groove for mounting the second sealing ring 523, and the side of the cover body 521 facing the sealing port 516 is provided with a third sealing groove surrounding the sealing columnar portion 522 for mounting the third sealing ring 524.

[0055] Please refer again to Figure 3In an embodiment of the present application, the inner protection assembly 200 comprises an inner sleeve 210 and a hydrophone protection cover 220, the inner sleeve 210 is sleeved outside the layer cable 100 and provided with a pipe cable joint 300 at the end, the hydrophone protection cover 220 is sleeved outside the inner sleeve 210 corresponding to the hydrophone probe, and the part of the inner sleeve 210 which is staggered with the hydrophone protection cover 220 is expanded under the support of the framework support assembly 400. By adding the hydrophone protection cover 220, the hydrophone probe can be protected, and the part of the inner sleeve 210 which is staggered with the hydrophone protection cover 220 is expanded under the support of the framework support assembly 400, so that the part of the inner sleeve 210 which is staggered with the hydrophone protection cover 220 can be expanded to the same radial size as the hydrophone protection cover 220, so as to ensure that the first woven section 610 wrapped on the inner protection assembly 200 has no radial size mutation, and the woven forming is facilitated. Specifically, the inner sleeve 210 can be a PU (Polyurethane, polyurethane) sleeve.

[0056] As shown in Figure 2 and Figure 3 In an embodiment of the present application, the framework support assembly 400 comprises a support framework body 410 and a medium filling layer 420, the support framework body 410 is sleeved on the layer cable 100, and the medium filling layer 420 is formed by injecting filling material and used for supporting the expansion of the inner sleeve 210. The support framework body 410 and the medium filling layer 420 can both provide structural support for the layer cable 100 in the inner sleeve 210, ensuring the overall stability and durability of the array. Specifically, each layer cable 100 can be provided with at least two support framework bodies 410, the at least two support framework bodies 410 are sequentially and spacedly arranged along the length direction of the layer cable 100, the medium filling layer 420 can be a filling glue layer, the filling glue liquid is injected into the inner sleeve 210, the filling glue liquid is solidified in the inner sleeve 210 to form the medium filling layer 420, and the injection amount of the filling glue liquid can be controlled according to the expansion of the inner sleeve 210 and the expansion to the similar or consistent radial size of the hydrophone protection cover 220.

[0057] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0058] In this application, unless otherwise clearly indicated, the terms "mounting", "connection", "connecting", "fixed", "fixedly connected" and the like should be understood in the broadest sense as intended by the inventors, such as it can be fixedly connected, detachably connected, or integral; it can be mechanical connection, or electrical connection, or communication with each other; it can be direct connection, or indirect connection via an intermediate medium; it can be the internal communication of two elements, or the interaction between two elements, unless otherwise clearly indicated. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0060] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A flexible braided layer reinforced fiber optic hydrophone array, characterized in that, include: Stranded cable, comprising stranded optical fiber tubes and tensile metal wires; The inner protective component is sleeved on the outside of the stranded cable and has a cable connector at its end. The outer side of the cable connector is for the inner protective component to be sleeved. The cable connector is provided with a cable through hole off the axis of the inner protective component. The cable through hole is for the stranded cable to pass through and be fixed, so that the stranded cable is set off to one side in the inner protective component. The hydrophone probe is connected to the optical fiber in the optical fiber tube and is located on both sides of the stranded cable in the inner protective assembly; A skeleton support assembly is disposed within the inner protective assembly and is used to support the stranded cable; A sealing connector assembly, both ends of which allow the end of the cable connector away from the inner protective assembly to be sealed and inserted, and the sealing connector assembly is provided with a fiber optic coil cavity into which the optical fiber can be inserted and connected. The flexible woven outer layer is formed by integrally weaving a non-metallic flexible woven component and includes a first woven segment and a second woven segment with different radial dimensions. The first woven segment and the second woven segment are respectively attached and wrapped around the inner protective component and the sealing joint component in a one-to-one correspondence.

2. The flexible braided layer reinforced fiber optic hydrophone array according to claim 1, characterized in that, The non-metallic flexible braided component is configured as a fiber flexible braided component or a polymer material flexible braided component; And / or, the non-metallic flexible braided component is one of aramid braided component, polyester braided component, polypropylene braided component and polyethylene braided component; And / or, the non-metallic flexible braided component is configured as a rope or strip.

3. The flexible braided layer reinforced fiber optic hydrophone array according to claim 1, characterized in that, The non-metallic flexible braided component is provided with an adhesive layer.

4. The flexible braided layer reinforced fiber optic hydrophone array according to claim 1, characterized in that, The cable connector includes an outer connector and an inner plug. The two ends of the outer connector are respectively fitted onto the inner protective component and the sealing connector component. The outer connector is provided with a cable through hole. The cable through hole includes a plug hole section and a fixing hole section arranged sequentially from the inner protective component toward the sealing connector component. The plug hole section is for the installation of the inner plug. The inner plug is provided with a plug hole for the stranded cable to pass through and extend into the fixing hole section. The fixing hole section is provided with a clamping adhesive layer to fix the tensile metal wire in the stranded cable.

5. The flexible braided layer reinforced fiber optic hydrophone array according to claim 4, characterized in that, The axial section of the fixing hole section is tapered in the direction toward the plug hole section, and a protruding flange hole section is provided between the fixing hole section and the plug hole section. The clamping adhesive layer is used to clamp the tensile metal wire in the fixing hole section when a tensile force is applied to the stranded cable in the direction toward the plug hole section. And / or, the tensile metal wire is bent within the fixed hole section.

6. The flexible braided layer reinforced fiber optic hydrophone array according to claim 1, characterized in that, The cable connector has a stepped portion at its first end for the inner protective component to be fitted. The stepped portion has an installation side for the inner protective component to be fitted and a stop end face that abuts against the inner protective component. The outer side of the inner protective component is provided with a clamping ring to clamp the inner protective component onto the cable connector. And / or, a first sealing ring is provided between the cable connector and the sealing connector assembly, and the sealing connector assembly is detachably connected to the cable connector via threaded fasteners. The threaded fasteners are located on the side of the first sealing ring facing away from the fiber optic disc cavity. There are multiple threaded fasteners, which are arranged in a ring shape at intervals.

7. The flexible braided layer reinforced fiber optic hydrophone array according to any one of claims 1 to 6, characterized in that, The sealing joint assembly includes a pressure-resistant housing and a sealing cover. The pressure-resistant housing has a first insertion cavity and a second insertion cavity at both ends for sealing insertion of different cable joints. Between the first insertion cavity and the second insertion cavity, the pressure-resistant housing has a cover cavity and a fiber coil cavity arranged radially in sequence. The fiber coil cavity and the cover cavity are located on the inner and outer sides of the pressure-resistant housing, respectively. The cover cavity is formed by a recess in the pressure-resistant housing. The pressure-resistant housing has a sealing port that connects the fiber coil cavity and the cover cavity. The sealing cover is detachably placed in the cover cavity to seal the sealing port and is flush with the outer contour of the pressure-resistant housing.

8. The flexible braided layer reinforced fiber optic hydrophone array according to claim 7, characterized in that, The pressure-resistant housing extends from the periphery of the sealing port toward the fiber optic cavity with a sealing plate portion. The sealing cover includes a cover body and a sealing column portion extending from the cover body. The cover body is placed inside the cover cavity and is flush with the outer contour of the pressure-resistant housing. The sealing column portion extends from the sealing port into the cavity formed by the sealing plate portion. A second sealing ring is provided between the sealing column portion and the sealing plate portion. A third sealing ring is also provided between the periphery of the sealing port and the cover body.

9. The flexible braided layer reinforced fiber optic hydrophone array according to any one of claims 1 to 6, characterized in that, The inner protective assembly includes an inner sleeve and a hydrophone protective cover. The inner sleeve is fitted over the outside of the stranded cable and has the cable connector at its end. The hydrophone protective cover is fitted over the outside of the inner sleeve corresponding to the hydrophone probe. The portion of the inner sleeve offset from the hydrophone protective cover is expanded under the support of the skeleton support assembly.

10. The flexible braided layer reinforced fiber optic hydrophone array according to claim 9, characterized in that, The skeleton support assembly includes a support skeleton body and a dielectric filling layer. The support skeleton body is sleeved on the stranded cable. The dielectric filling layer is formed by injecting filling material and is used to support the expansion of the inner sleeve.

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