Flexible braid layer reinforced optical fiber hydrophone array

Abstract

The invention discloses a flexible braided layer reinforced optical fiber hydrophone array, which is characterized in that an inner protection assembly sleeves the outer side of a layer stranded cable, the end part of the inner protection assembly is provided with a pipe cable joint, the axis of the pipe cable joint deviating from the inner protection assembly is provided with a cable via hole, and the cable via hole is used for the layer stranded cable to pass through and is fixedly connected with the layer stranded cable so that the layer stranded cable is arranged deviating from one side; the hydrophone probe and the layer stranded cable are arranged on the two sides in the inner protection assembly respectively, the framework supporting assembly is arranged in the inner protection assembly, the two ends of the sealing connector assembly can be used for pipe cable connectors to be connected in a sealed and inserted mode, and the flexible woven outer layer is formed by integrally weaving a non-metal flexible woven piece and comprises a first woven section and a second woven section which are different in radial size. The first weaving sections and the second weaving sections are attached to and wrap the inner protection assembly and the sealing connector assembly in a one-to-one correspondence mode, the tensile property of the array is remarkably improved, meanwhile, the abrasion resistance of the outer surface of the array can be remarkably improved, and integrated weaving forming of the flexible weaving outer layer is easy to achieve.

Description

Technical Field

[0001] This invention belongs to the field of optical sensing system technology, and particularly relates to a flexible braided layer reinforced fiber optic hydrophone array. Background Technology

[0002] A fiber optic hydrophone is an underwater acoustic signal sensor based on fiber optic and optoelectronic technologies. It converts underwater acoustic vibrations into optical signals through highly sensitive optical coherent detection, which are then transmitted via optical fiber to a signal processing system to extract the acoustic signal information. It features high sensitivity and good frequency response characteristics, and because it uses optical fiber as the information carrier, it is suitable for long-distance, large-area monitoring.

[0003] Currently, fiber optic hydrophones and their arrays have become the development direction of the underwater portion of passive sonar, and are the most promising equipment for ocean detection and listening to weak sound field signals. However, when fiber optic hydrophone arrays are deployed underwater, the array is subjected to a large tensile load due to the product's own weight and environmental loads. In specific engineering deployments, tire-mounted machines or drum machines are often used to apply tension, resulting in a large friction force on the array surface. Existing arrays mostly use galvanized steel wire of stranded cable to increase tensile strength, but the wear resistance of the outermost traditional armored sleeve is limited, which poses a risk of breakage. Summary of the Invention

[0004] To address the aforementioned defects or deficiencies, this invention provides a flexible braided layer reinforced fiber optic hydrophone array, aiming to solve the technical problem that the tensile strength and wear resistance of existing arrays urgently need to be improved.

[0005] To achieve the above objectives, the present invention provides a flexible braided layer reinforced fiber optic hydrophone array, wherein the flexible braided layer reinforced fiber optic hydrophone array includes a stranded cable, an inner protective assembly, a hydrophone probe, a skeleton support assembly, a sealing connector assembly, and a flexible braided outer layer; the stranded cable includes a stranded fiber optic tube and tensile metal wires; the inner protective assembly 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 assembly to be sleeved, and the cable connector has a cable through hole offset from the axis of the inner protective assembly, the cable through hole for the stranded cable to pass through and be fixed, so that the stranded cable is offset within the inner protective assembly. The device is configured on one side; 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 protection assembly; the skeleton support assembly is located in the inner protection assembly and is used to support the stranded cable; both ends of the sealing joint assembly can be sealed and plugged into the end of the cable joint away from the inner protection assembly, and the sealing joint assembly has a fiber optic cavity for optical fiber to be inserted and connected; the flexible braided outer layer is a non-metallic flexible braided piece integrally woven and includes a first braided segment and a second braided segment with different radial dimensions, and the first braided segment and the second braided segment are respectively attached and wrapped on the inner protection assembly and the sealing joint assembly in a one-to-one correspondence.

[0006] In one embodiment of the present invention, the non-metallic flexible braided part is configured as a fiber flexible braided part or a polymer material flexible braided part.

[0007] In one embodiment of the present invention, the non-metallic flexible braided component is one of aramid braided component, polyester braided component, polypropylene braided component, and polyethylene braided component.

[0008] In one embodiment of the present invention, the non-metallic flexible braided component is configured as a rope or strip.

[0009] In one embodiment of the present invention, the non-metallic flexible woven part is provided with an adhesive layer.

[0010] In one embodiment of the present invention, 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 in a one-to-one correspondence. 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 in the direction 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 for fixing the tensile metal wire in the stranded cable.

[0011] In one embodiment of the present invention, the axial section of the fixing hole segment is gradually tapered in the direction toward the plug hole segment, and a protruding flange hole segment is provided between the fixing hole segment and the plug hole segment. The clamping adhesive layer is used to clamp the tensile metal wire in the fixing hole segment when a tensile force is applied to the stranded cable in the direction toward the plug hole segment.

[0012] In one embodiment of the present invention, the tensile metal wire is bent within the fixed hole section.

[0013] In one embodiment of the present invention, the first end of the cable connector for the inner protective component to be fitted is provided with a stepped portion, the stepped portion having an installation side for the inner protective component to be fitted and a stop end face that abuts against the inner protective component end-to-end, and a clamping ring is provided on the outer side of the inner protective component to clamp the inner protective component onto the cable connector.

[0014] In one embodiment of the present invention, 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 and spaced apart in sequence.

[0015] In one embodiment of the present invention, the sealing joint assembly includes a pressure-resistant housing and a sealing cover. The two ends of the pressure-resistant housing are respectively provided with a first insertion cavity and a second insertion cavity for sealing insertion of different cable joints. Between the first insertion cavity and the second insertion cavity, the pressure-resistant housing is provided with a cover cavity and a fiber coil cavity in a radial direction. The fiber coil cavity and the cover cavity are respectively located on the inner and outer sides of the pressure-resistant housing, and the cover cavity is formed by a recess in the pressure-resistant housing. The pressure-resistant housing is provided with a sealing port communicating with 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 set to be flush with the outer contour of the pressure-resistant housing.

[0016] In one embodiment of the present invention, a sealing plate portion extends from the periphery of the sealing port toward the fiber optic cavity of the pressure-resistant housing. The sealing cover includes a cover body and a sealing column portion extending from the cover body. The cover body is placed in the cover body 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.

[0017] In one embodiment of the present invention, the inner protection component includes an inner sleeve and a hydrophone protective cover. The inner sleeve is sleeved on the outside of the stranded cable and has a cable connector at its end. The hydrophone protective cover is sleeved on 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 component.

[0018] In one embodiment of the present invention, the skeleton support assembly includes a support skeleton body and a dielectric filling layer. The support skeleton body is sleeved on the stranded cable, and the dielectric filling layer is formed by injecting filling material and is used to support the expansion of the inner sleeve.

[0019] Through the above technical solution, the flexible braided layer reinforced fiber optic hydrophone array provided by the present invention has the following beneficial effects: When using the aforementioned flexible braided layer reinforced fiber optic hydrophone array, it comprises a stranded cable, an inner protective assembly, a hydrophone probe, a skeleton support assembly, a sealing connector assembly, and a flexible braided outer layer. The inner protective assembly is fitted over the outside of the stranded cable and has a cable connector at one end. The outer side of the cable connector is for the inner protective assembly to be fitted. The hydrophone probe is connected to the optical fiber of the stranded cable. The skeleton support assembly is located inside the inner protective assembly and is used to support the stranded cable. Both ends of the sealing connector assembly allow for sealing and insertion of the cable connector at the end furthest from the inner protective assembly. The sealing connector assembly has a fiber optic coil cavity for optical fiber insertion and connection. The flexible braided outer layer is formed by integrally weaving a non-metallic flexible braid and includes a first braided segment and a second braided segment with different radial dimensions. The first braided segment and the second braided segment are respectively attached and wrapped around the inner protective component and the sealing joint component. By weaving a flexible braided outer layer that is tightly attached to the inner protective component and the sealing joint component on the outermost layer of the fiber optic hydrophone array, the non-metallic flexible braid has excellent bending resistance and wear resistance, which significantly improves the tensile strength of the array and also significantly improves the wear resistance of the outer surface of the array, thus avoiding the risk of breakage. In addition, the cable connector is provided with a cable through hole off the axis of the inner protective component. The cable through hole allows 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 and is set on both sides of the stranded cable in the inner protective component. That is, the inner protective component on the cable connector is a long straight tube. In other words, in the entire optical fiber hydrophone array, there is only a small change in radial dimension at the sealing connector assembly, and the length of the sealing connector assembly is relatively short, which facilitates the integrated braiding of the flexible braided outer layer.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. Those skilled in the art can obtain other drawings based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of a flexible braided layer reinforced fiber optic hydrophone array according to an embodiment of the present invention. Figure 2 This is a cross-sectional structural schematic diagram of a flexible braided layer reinforced fiber optic hydrophone array according to an embodiment of the present invention. Figure 3 This is a schematic cross-sectional view of another flexible braided layer reinforced fiber optic hydrophone array according to an embodiment of the present invention. Figure 4 yes Figure 3 Enlarged schematic diagram of some of the structures in the diagram; Figure 5 This is a schematic diagram of the structure of an external connector according to an embodiment of the present invention; Figure 6 This is an exploded structural diagram of a cable connector and sealing connector assembly according to an embodiment of the present invention; Figure 7 This is an exploded structural diagram of a sealing joint assembly according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 100. Stranded cable; 200. Inner protective assembly; 210. Inner sleeve; 211. Crimping ring; 220. Hydrophone protective cover; 300. Cable connector; 310. Outer connector; 311. Cable through hole; 312. Plug hole section; 313. Fixing hole section; 314. Flange hole section; 315. Stepped section; 316. First sealing ring; 320. Inner plug; 400. Skeleton support assembly; 410. Support skeleton body; 420. Medium filling layer; 500. Sealing joint Head assembly; 510, pressure-resistant housing; 511, fiber coil cavity; 512, threaded fastener; 513, first insertion cavity; 514, second insertion cavity; 515, cover cavity; 516, sealing port; 517, sealing plate portion; 520, sealing cover; 521, cover body; 522, sealing column 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 Implementation

[0023] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] The flexible braided layer reinforced fiber optic hydrophone array of the present invention is described below with reference to the accompanying drawings.

[0025] like Figures 1 to 3 As shown, the present invention provides a flexible braided layer reinforced fiber optic hydrophone array, wherein the flexible braided layer reinforced fiber optic hydrophone array includes: The stranded cable 100 includes a stranded optical fiber tube and tensile metal wires; The inner protective component 200 is sleeved on the outside of the stranded cable 100 and has a cable connector 300 at its end. The outer side of the cable connector 300 is for the inner protective component 200 to be sleeved. The cable connector 300 is provided with a cable through hole 311 off the axis of the inner protective component 200. The cable through hole 311 is for the stranded cable 100 to pass through and be fixed, so that the stranded cable 100 is set off to one side in the inner protective component 200. The hydrophone probe is connected to the optical fiber in the optical fiber tube and is located on both sides of the stranded cable 100 in the inner protective assembly 200. The skeleton support assembly 400 is located within the inner protective assembly 200 and is used to support the stranded cable 100 of the layer; The sealing connector assembly 500 has two ends that allow the end of the cable connector 300 away from the inner protection component 200 to be sealed and plugged in, and the sealing connector assembly 500 is provided with a fiber optic tray cavity 511 for optical fiber to be inserted and connected. The flexible braided outer layer 600 is formed by integrally weaving a non-metallic flexible braided component and includes a first braided segment 610 and a second braided segment 620 with different radial dimensions. The first braided segment 610 and the second braided segment 620 are respectively attached and wrapped on the inner protective component 200 and the sealing joint component 500 in a one-to-one correspondence.

[0026] When using the aforementioned flexible braided layer reinforced fiber optic hydrophone array, it includes a stranded cable 100, an inner protective component 200, a hydrophone probe, a skeleton support component 400, a sealing connector component 500, and a flexible braided outer layer 600. The inner protective component 200 is sleeved on the outside of the stranded cable 100 and has a cable connector 300 at its end. The outer side of the cable connector 300 is for the inner protective component 200 to be sleeved. The hydrophone probe is connected to the optical fiber of the stranded cable 100. The skeleton support component 400 is located inside the inner protective component 200 and is used to support the stranded cable 100. Both ends of the sealing connector component 500 can be sealed and inserted at the end of the cable connector 300 away from the inner protective component 200. The sealing connector component 500 has a way to allow the optical fiber to extend. The fiber optic hydrophone array is connected to the fiber optic cavity 511. The flexible braided outer layer 600 is formed by integrally weaving a non-metallic flexible braid and includes a first braided segment 610 and a second braided segment 620 with different radial dimensions. The first braided segment 610 and the second braided segment 620 are respectively attached and wrapped on the inner protective component 200 and the sealing joint component 500. By weaving a flexible braided outer layer 600 that is tightly attached to the inner protective component 200 and the sealing joint component 500 on the outermost layer of the fiber optic hydrophone array, the non-metallic flexible braid has excellent bending resistance and wear resistance, which significantly improves the tensile strength of the array and also significantly improves the wear resistance of the outer surface of the array, avoiding the risk of breakage. In addition, the cable connector 300 is provided with a cable through hole 311 off the axis of the inner protective component 200. The cable through hole 311 allows the stranded cable 100 to pass through and be fixed, so that the stranded cable 100 is set off to one side in the inner protective component 200. The hydrophone probe is connected to the optical fiber and is set on both sides of the stranded cable 100 in the inner protective component 200. That is, the inner protective component 200 on the cable connector 300 is a long straight tube. In other words, in the entire fiber optic hydrophone array, there is only a small change in radial dimension at the sealing connector component 500, and the length of the sealing connector component 500 is short, which facilitates the integrated braiding of the flexible braided outer layer 600.

[0027] Specifically, since the sealing joint assembly 500 needs to realize fiber optic connection and optical device housing, the radial dimension of the sealing joint assembly 500 should be set to be greater than the radial dimension of the inner protective assembly 200. Therefore, an inclined variable diameter braided section 630 is provided between the first braided section 610 and the second braided section 620 to realize the transition between the two radial dimensions. The variable diameter braided section 630 can specifically correspond to the cable joint 300.

[0028] It should be noted that in existing fiber optic hydrophone arrays, since the stranded cable 100 is generally located on the central axis of the array, in order to have enough space to arrange the hydrophone probe, the abrupt change in the radial dimension of the array must occur before the hydrophone probe. In other words, the abrupt change length in the existing technology is longer, and the radial dimension change of the connector structure at the abrupt change position is also relatively large. This makes it difficult to achieve the integrated braiding of the flexible braided outer layer 600.

[0029] In one embodiment of the present invention, the non-metallic flexible braided component is configured as a fiber flexible braided component or a polymer flexible braided component. That is, the material of the non-metallic flexible braided component can be fiber or polymer. Since both fiber and polymer materials possess lightweight properties and excellent tensile strength and abrasion resistance, the resulting non-metallic flexible braided component can also possess the aforementioned properties. Of course, the present invention is not limited to this; the non-metallic flexible braided component can also be configured as other materials possessing low density, high strength, and meeting the requirements for weaving and molding. Specifically, the non-metallic flexible braided component is configured as one of aramid braided components, polyester braided components, polypropylene braided components, and polyethylene braided components.

[0030] In one embodiment of the present invention, the non-metallic flexible braided component is configured as a rope or strip, that is, the non-metallic flexible braided component can be configured as a braided rope or a braided strip, thereby facilitating weaving and forming.

[0031] In one embodiment of the present invention, the non-metallic flexible woven part is provided with an adhesive layer. Specifically, after the non-metallic flexible woven part is prepared, it can be immersed in an adhesive solution so that the outer layer of the non-metallic flexible woven part is coated with an adhesive layer and the inner part is permeated with adhesive liquid, thereby making the forming effect better during integral weaving and further significantly improving the wear resistance when arrayed.

[0032] See Figures 3 to 5 In one embodiment of the present invention, the cable connector 300 includes an outer connector 310 and an inner plug 320. The two ends of the outer connector 310 are respectively fitted onto the inner protective component 200 and the sealing connector component 500. The outer connector 310 is provided with a cable through-hole 311, which includes a plug hole section 312 and a fixing hole section 313 sequentially arranged in the direction from the inner protective component 200 toward the sealing connector component 500. The plug hole section 312 is for the inner plug 320 to be installed. The inner plug 320 is provided with a plug hole through which the stranded cable 100 passes and extends into the fixing hole section 313. The fixing hole section 313 is provided with a clamping adhesive layer for fixing the tensile metal wires in the stranded cable 100. The clamping adhesive layer for fixing the tensile metal wires of the stranded cable 100 can be formed by injecting adhesive into the fixing hole section 313. The fixing method is simple and effective, and the inner plug 320 can seal the clamping adhesive layer. Furthermore, the clamping adhesive layer may include, but is not limited to, an epoxy resin adhesive layer; other adhesive layers capable of bonding are also acceptable.

[0033] In one embodiment of the present invention, the axial section of the fixing hole section 313 is gradually tapered in the direction toward the plug hole section 312, that is, the fixing hole section 313 is wedge-shaped, and a protruding flange hole section 314 is provided between the fixing hole section 313 and the plug hole section 312. That is, the side of the flange hole section 314 facing the fixing hole section 313 can form a stop for the clamping adhesive layer placed in the fixing hole section 313. The clamping adhesive layer is used to clamp the tensile metal wire in the fixing hole section 313 when a tensile force is applied to the stranded cable 100 in the direction toward the plug hole section 312. That is, after the glue is injected into the fixing hole section 313 and during the solidification process, a tensile force can be applied to the stranded cable 100 in the direction of the plug hole section 312. Since the tensile metal wire is embedded in the clamping glue layer, the clamping glue layer can also be pulled. Since the fixing hole section 313 is wedge-shaped and has a flange hole section 314, the clamping glue layer can be pulled tighter and tighter until it cannot be pulled, thereby achieving the tightening and fixing of the stranded cable 100.

[0034] Specifically, when injecting adhesive into the fixing hole section 313, since there is a gap between the inner wall of the flange hole section 314 and the stranded cable 100, the adhesive can flow into the plug hole section 312, so that an adhesive layer can also be provided between the inner wall of the plug hole section 312 and the inner plug 320.

[0035] In one embodiment of the present invention, the tensile metal wire is bent within the fixing hole section 313. By bending the tensile metal wire, the tensile force exerted by the tensile metal wire on the clamping adhesive layer can be increased, thereby improving the tightness of the clamping adhesive layer.

[0036] In one embodiment of the present invention, the first end of the cable connector 300 for the inner protective component 200 to be fitted with is provided with a stepped portion 315. The stepped portion 315 has an installation side for the inner protective component 200 to be fitted with and a stop end face that abuts against the inner protective component 200 end. That is, by adding the stepped portion 315, on the one hand, it is convenient to realize the docking of the inner protective component 200 and the sealing connector assembly 500 with different radial dimensions, and on the other hand, it also serves to axially position the inner protective component 200. Specifically, the stepped portion 315 is provided on the outer connector 310 of the cable connector 300. At the same time, a clamping ring 211 is provided on the outer side of the inner protective component 200 to clamp the inner protective component 200 onto the cable connector 300. By adding the clamping ring 211, a sealed connection between the inner protective component 200 and the cable connector 300 can be achieved. More specifically, the outer connector 310 of the cable connector 300 may be provided with a fourth sealing ring, which is placed between the outer connector 310 and the inner sleeve 210 of the inner protective component 200. Alternatively, the outer connector 310 may be provided with a glue groove, so that when the filling adhesive of the medium filling layer 420 is injected into the inner sleeve 210, the filling adhesive can also flow into the glue groove to achieve a sealed bond between the outer connector 310 and the inner sleeve 210.

[0037] In one embodiment of the present invention, a first sealing ring 316 is provided between the cable connector 300 and the sealing connector assembly 500, and the sealing connector assembly 500 is detachably connected to the cable connector 300 via threaded fasteners 512. The threaded fasteners 512 are located on the side of the first sealing ring 316 facing away from the fiber optic coil cavity 511, and there are multiple threaded fasteners 512 arranged in a ring-like pattern with intervals between them. That is, by adding the first sealing ring 316 and the threaded fasteners 512, a sealed connection between the cable connector 300 and the sealing connector assembly 500 can be achieved. Furthermore, the outer connector 310 of the cable connector 300 has a first sealing groove for installing the first sealing ring 316. After the outer connector 310 with the first sealing ring 316 installed is inserted into the end of the sealing connector assembly 500, the outer connector 310 and the sealing connector assembly 500 can be detachably connected via multiple threaded fasteners 512, thereby strengthening the connection. Furthermore, the number of first sealing rings 316 can be at least two, preferably two, and the first sealing rings 316 can be O-rings, and the threaded fasteners 512 can be high-strength fastening screws.

[0038] See Figure 3 , Figure 4 , Figure 6 and Figure 7In one embodiment of the present invention, the sealing connector assembly 500 includes a pressure-resistant housing 510 and a sealing cover 520. The pressure-resistant housing 510 has a first insertion cavity 513 and a second insertion cavity 514 at both ends for sealing insertion of different cable connectors 300. The pressure-resistant housing 510 has a cover cavity 515 and a fiber coil cavity 511 arranged radially between the first insertion cavity 513 and the second insertion cavity 514. The fiber coil cavity 511 and the cover cavity 515 are respectively located on the inner and outer sides of the pressure-resistant housing 510, and the cover cavity 515 is formed by a recess in the pressure-resistant housing 510. The pressure-resistant housing 510 has a sealing port 516 communicating with the fiber coil cavity 511 and the cover cavity 515. The sealing cover 520 is detachably placed in the cover cavity 515 to seal the sealing port 516 and is flush with the outer contour of the pressure-resistant housing 510. The addition of the sealing port 516 allows for the inspection or replacement of optical fiber connections and optical devices within the fiber optic cavity 511. The cover cavity 515 is formed by the recess of the pressure-resistant housing 510, and the sealing cover 520 is flush with the outer contour of the pressure-resistant housing 510 when placed in the cover cavity 515. This ensures that the radial dimension of the sealing joint assembly 500 is consistent throughout its entire length, without any abrupt changes in radial dimension. This also ensures that the radial dimension of the second braided section 620 wrapped and attached to the sealing joint assembly 500 is consistent, facilitating braiding.

[0039] In one embodiment of the present invention, the pressure-resistant housing 510 extends from the periphery of the sealing port 516 toward the fiber optic cavity 511 and is provided with a sealing plate portion 517. The sealing cover 520 includes a cover body 521 and a sealing column portion 522 extending from the cover body 521. The cover body 521 is placed in the cover cavity 515 and is provided flush with the outer contour of the pressure-resistant housing 510. The sealing column portion 522 extends from the sealing port 516 into the cavity formed by the sealing plate portion 517. A second sealing ring 523 is provided between the sealing column portion 522 and the sealing plate portion 517. A third sealing ring 524 is also provided between the periphery of the sealing port 516 and the cover body 521. By adding the sealing plate portion 517 and the sealing column portion 522, and providing a second sealing ring 523 between them, an insertion seal can be achieved between the sealing cover 520 and the pressure-resistant housing 510. Furthermore, through the cooperation of the third sealing ring 524 between the sealing port 516 and the cover body 521, sealing can be achieved from two directions, further improving the reliability of the seal. Specifically, the sealing column portion 522 is provided with a second sealing groove for installing the second sealing ring 523, and the cover body 521, facing the sealing port 516, has a third sealing groove surrounding the sealing column portion 522 for installing the third sealing ring 524.

[0040] Please see again Figure 3In one embodiment of the present invention, the inner protective component 200 includes an inner sleeve 210 and a hydrophone protective cover 220. The inner sleeve 210 is sleeved on the outside of the stranded cable 100 and has a cable connector 300 at its end. The hydrophone protective cover 220 is sleeved on the outside of the inner sleeve 210 corresponding to the hydrophone probe, and the portion of the inner sleeve 210 offset from the hydrophone protective cover 220 is expanded under the support of the skeleton support component 400. By adding the hydrophone protective cover 220, the hydrophone probe can be strengthened for protection. At the same time, the portion of the inner sleeve 210 offset from the hydrophone protective cover 220 is expanded under the support of the skeleton support component 400, so that the portion of the inner sleeve 210 offset from the hydrophone protective cover 220 can expand to be consistent with the radial dimension of the hydrophone protective cover 220, so as to ensure that the first braided segment 610 wrapped and attached to the inner protective component 200 does not have abrupt changes in radial dimension, which facilitates braiding. Specifically, the inner sleeve 210 can be a PU (Polyurethane) sleeve.

[0041] like Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the skeleton support assembly 400 includes a support skeleton 410 and a dielectric filling layer 420. The support skeleton 410 is sleeved on the stranded cable 100, and the dielectric filling layer 420 is formed by injecting filling material and is used to support the expansion of the inner sleeve 210. Both the support skeleton 410 and the dielectric filling layer 420 can provide structural support for the stranded cable 100 in the inner sleeve 210, ensuring the overall stability and durability of the array. Specifically, each stranded cable 100 may have at least two support skeletons 410, and the at least two support skeletons 410 are arranged sequentially at intervals along the length direction of the stranded cable 100. The dielectric filling layer 420 may be a filling adhesive layer, and filling adhesive is injected into the inner sleeve 210. The filling adhesive cures in the inner sleeve 210 to form the dielectric filling layer 420. The amount of filling adhesive injected can be controlled to allow the inner sleeve 210 to expand to a size similar to or consistent with the radial dimension of the hydrophone protective cover 220.

[0042] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

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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