CN114910154B - Side-hanging hydrophone fiber damping array and preparation method thereof - Google Patents
Side-hanging hydrophone fiber damping array and preparation method thereof Download PDFInfo
- Publication number
- CN114910154B CN114910154B CN202210493529.6A CN202210493529A CN114910154B CN 114910154 B CN114910154 B CN 114910154B CN 202210493529 A CN202210493529 A CN 202210493529A CN 114910154 B CN114910154 B CN 114910154B
- Authority
- CN
- China
- Prior art keywords
- hydrophone
- damping
- main cable
- fiber
- array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 131
- 238000013016 damping Methods 0.000 title claims abstract description 122
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000004073 vulcanization Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 9
- 240000005546 Piper methysticum Species 0.000 claims description 8
- 235000016787 Piper methysticum Nutrition 0.000 claims description 8
- 238000009941 weaving Methods 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000005284 excitation Effects 0.000 abstract description 4
- 229920002635 polyurethane Polymers 0.000 description 11
- 239000004814 polyurethane Substances 0.000 description 11
- 230000009467 reduction Effects 0.000 description 9
- 238000009954 braiding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 2
- 102100033121 Transcription factor 21 Human genes 0.000 description 2
- 101710119687 Transcription factor 21 Proteins 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 108010066057 cabin-1 Proteins 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000010196 hermaphroditism Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
Abstract
The invention discloses a fiber damping array of a side-hung hydrophone and a preparation method thereof, wherein the fiber damping array comprises a main cable; the main cable is provided with a plurality of side hanging brackets which are distributed at intervals along the length direction of the main cable and are used for installing the hydrophone; and a plurality of damping fiber bundles distributed at intervals are arranged on the outer side of the main cable. Compared with the prior art, the damping fiber bundles led out are woven outside the main cable, so that the damping of the array system in water can be greatly improved, the vibration of the array cable caused by dragging, ocean currents and waves can be effectively reduced, the flow excitation noise of the array cable and the vibration noise of the main cable can be effectively reduced, and the signal to noise ratio of the receiving signals of the array elements of the receiving hydrophone is improved. Meanwhile, through the structure provided by the invention, the hydrophone is hung on the main cable, the hydrophone is easy to replace, maintain, examine and maintain, different hydrophones can be flexibly replaced according to different application scenes, the array element spacing and the array element number can be flexibly adjusted, the universality is good, and the usability is high.
Description
Technical Field
The invention relates to marine acoustic equipment, in particular to a hydrophone array.
Background
In the field of underwater acoustic engineering, hydrophone array systems are widely used to pick up underwater environmental noise information and target acoustic information. However, the acoustic information required to be picked up by the receiving array is very weak, the array performance is directly limited by the noise floor of the hydrophone array, and how to effectively reduce the noise floor of the receiving array becomes a core problem for solving weak signal pickup.
In order to solve the problem that the noise floor of an array system is increased due to the fact that the traditional receiving array is subjected to the influence of dragging, wave and ocean currents, vibration reduction sections are additionally arranged at the upper end of an array cable to reduce the vibration influence, and the effect of reducing the vibration noise is generally obvious as the vibration reduction sections are longer, but in most cases, on one hand, the vibration reduction sections are increased to bring about cost increase and the reduction of the signal transmission quality of a sensor, especially the vibration reduction sections are limited by the sea depths in the application of a vertical array system, and on the other hand, the vibration reduction section structure only can reduce the vibration noise caused by the dragging and wave and cannot influence the flow noise of the water flow impacting the array cable. The above problems are to be solved.
Disclosure of Invention
The invention aims to: in order to measure weak underwater environmental noise and target sound information, overcome the defects existing in the prior art, effectively reduce array jitter noise and flow excitation noise and improve the receiving performance of an array system, the invention provides a fiber damping array of a side-hanging hydrophone, and simultaneously provides a preparation method of the fiber damping array of the side-hanging hydrophone.
The technical scheme is as follows: the invention provides a fiber damping array of a side-hung hydrophone, which comprises a main cable; the main cable is provided with a plurality of side hanging brackets which are distributed at intervals along the length direction of the main cable and are used for installing the hydrophone;
and a plurality of damping fiber bundles distributed at intervals are arranged on the outer side of the main cable.
Further preferably, the damping fiber bundles are in a fiber fluffy structure.
Preferably, the damping fiber bundles are uniformly distributed on the outer side of the main cable in the circumferential direction.
Further preferably, the damping fiber bundles are curved damping fiber bundles.
Preferably, the main cable sequentially comprises a kava bearing piece, a plurality of pairs of twisted pair signal wires distributed on the periphery of the kava bearing piece and a main cable watertight outer sheath arranged on the periphery of the twisted pair signal wires from inside to outside.
Further preferably, the main cable further comprises a damping fiber braiding layer arranged at the periphery of the watertight outer sheath of the main cable; the damping fiber bundles are led out from the damping fiber woven layer.
Preferably, the device further comprises an instrument cabin arranged at the top end of the main cable and a sinking block arranged at the bottom end of the main cable;
the sinking block is connected with the main cable through a tail end bearing hanging ring, and a parallel releaser is arranged between the sinking block and the tail end bearing hanging ring; the parallel releaser is connected with the sinking block through a steel wire rope;
the main cable is connected with the instrument cabin through a water tight connector; the instrument cabin is an instrument cabin with a floating body function.
Further preferably, the side hanging bracket comprises a mounting structural member sleeved on the outer side of the main cable and a protection tube arranged on one side of the mounting structural member and used for placing the hydrophone.
Further preferably, the side hanging bracket further comprises a clamping hoop which can be buckled on the outer side of the installation structural member;
the protection pipe is provided with a wedge-shaped mounting seat matched with the clamping hoop, and is fixedly connected with the clamping hoop positioned at the outer side of the mounting structural member through the wedge-shaped mounting seat and is arranged at one side of the mounting structural member.
Further preferably, the outer wall of the hydrophone is provided with a plurality of fixing bosses;
the protection tube for placing the hydrophone comprises a tube body, wherein a hydrophone clamping seat is arranged in the tube body, and is a notched and elastically deformable non-closed circular ring; the hydrophone card seat is provided with a plurality of grooves which are matched with the fixing bosses on the outer wall of the hydrophone.
Further preferably, each mounting structure is provided with a first watertight connector in signal connection with one pair of twisted pair signal wires; and each hydrophone is provided with a second watertight connector which is in signal connection with the corresponding first watertight connector.
Further preferably, the watertight connector is a titanium steel structure multicore connector; a plurality of pairs of twisted-pair signal wires in the main cable are connected with corresponding core inserting terminals on the watertight connector; the kafu tension bearing piece in the main cable is fixed at the tail end of the water-tight connector; the watertight outer sheath of the main cable is encapsulated and watertight by the watertight connector housing.
Further preferably, the mounting structural member sleeved on the outer side of the main cable is a polyurethane mounting structural member formed by pouring polyurethane for vulcanization; the installation structural member is in sealing connection with the watertight outer sheath of the main cable through heat vulcanization; the first watertight connector is in sealing connection with the installation structural member and the watertight outer sheath of the main cable through heat vulcanization.
The invention also provides a preparation method of the fiber damping array of the side-hung hydrophone, which comprises the following steps of pretreatment of fiber bundles, vulcanization of mounting structural members, mounting of the hydrophone and formation of damping fluffy structures, so that the fiber damping array of the side-hung hydrophone is obtained:
wherein the step of pretreating the fiber bundle comprises:
a0 Twisting the multi-strand fiber into a curved damping fiber bundle;
wherein the step of curing the mounting structure comprises:
b0 Splitting the watertight outer sheath of the main cable at a plurality of preset positions on the main cable, pulling out the corresponding twisted pair signal wires to enable the corresponding twisted pair signal wires to be connected with the corresponding first watertight connectors and then returning the corresponding twisted pair signal wires to the corresponding first watertight connectors, and forming a plurality of mounting structural members which are sleeved on the outer side of the main cable through vulcanization and are in sealing connection with the watertight outer sheath of the main cable and the corresponding first watertight connectors at the corresponding split positions;
wherein the step of installing the hydrophone comprises:
c1 A plurality of protection pipes are arranged on one side of the installation structural member;
c2 Mounting each hydrophone into a corresponding protective tube; the second watertight connectors on each hydrophone are in signal connection with the first watertight connectors on the corresponding mounting structural members;
wherein the step of forming the damping fluff structure comprises:
d1 Weaving damping fiber bundles pretreated in the step A0) from the damping fiber weaving layer at the periphery of the main cable, and fluffing the damping fiber bundles, so that the bent fibers in the same and/or adjacent damping fiber bundles are mutually wound to form a fiber damping structure.
Still more preferably, in the step C1), specifically: a plurality of protection pipes are fastened and connected with clamping hoops positioned at the outer sides of the installation structural members through wedge-shaped installation seats and are arranged at one side of the installation structural members;
in the step C2), each hydrophone is arranged in the non-closed circular ring of the hydrophone clamping seat, and is arranged in the corresponding protection pipe after being clamped and fixed by the elasticity of the hydrophone clamping seat.
The beneficial effects are that: compared with the prior art, the side-hung hydrophone fiber damping array and the preparation method thereof provided by the invention have the following advantages:
1. the damping fiber bundles led out are woven outside the main cable, so that the stream excitation noise of the array cable and the shake noise of the main cable can be effectively reduced, and the signal-to-noise ratio of the receiving hydrophone array element receiving signal can be improved.
2. Further, the fiber damping structure (also can be called as a fiber fluffing structure, a damping fluffing structure, a hair fluffing structure or a damping fiber fluffing structure) formed after the bending damping fibers are fluffed has a good noise reduction effect on the flow excitation noise of the hydrophone array, the damping fluffing structure positioned on the outer side of the whole array can greatly improve the damping of the array system in water, the cable vibration caused by drag, ocean current and wave can be effectively reduced, and compared with the array adopting the fiber damping structure provided by the invention through actual measurement, the array noise is greatly reduced, and the amplitude reduction even reaches 10dB compared with the array adopting the vibration reduction section structure.
3. Through the structure provided by the invention, the hydrophone is laterally hung on the main cable, so that the hydrophone is easy to replace and maintain and the inspection and maintenance of the array system are easy to carry out; the hydrophones with different sensitivities can be flexibly replaced according to different application scenes, and meanwhile, the array element spacing and the array element number of the whole array can be flexibly adjusted according to different application scenes, so that the array has good universality and high usability.
Drawings
FIG. 1 is a schematic diagram of a side-hung hydrophone fiber damping array according to an embodiment;
FIG. 2 is a schematic view of a cross section of a portion of the main cable in the embodiment shown in FIG. 1;
FIG. 3 is a schematic view of one of the side hanging brackets according to the embodiment;
FIG. 4 is a schematic view of one of the mounting structures provided in the embodiments;
FIG. 5 is a schematic diagram of the structure of one of the hydrophones provided in the embodiments;
fig. 6 is a schematic diagram of one of the hydrophone cartridges provided in an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, which are not to be construed as limiting the invention.
The fiber damping array of the side-hung hydrophone provided by the embodiment, as shown in fig. 1, comprises a main cable 2, wherein a plurality of side-hung brackets which are distributed at intervals along the length direction of the main cable 2 and are used for installing the hydrophone are arranged on the main cable 2; a plurality of damping fiber bundles 16 are arranged outside the main cable 2 at intervals. The hydrophone 3 is arranged in the side-hung bracket, and the hydrophone fiber damping array comprises a plurality of hydrophones 3 which are hung on the main cable 2 in a side-hung manner and are arranged at intervals along the length direction of the main cable 2.
In this embodiment, the damping fiber bundles 16 are curved damping fiber bundles and are circumferentially distributed on the outer side of the main cable 2. The damping fiber bundles 16 may be irregularly arranged on the outer circumference of the main cable 2, and as a preferred structure, in this embodiment, as shown in fig. 2, the damping fiber bundles 16 are circumferentially distributed at 90 ° on the circumference of the main cable 2, that is, four rows of damping fiber bundles 16 are circumferentially arranged on the outer circumference of the main cable 2. In this embodiment, the length of the fibers in the damping fiber bundles is 12cm, and the fiber bundles are in a curved fluffy structure (i.e., a fiber fluffy structure, which may also be referred to as a fiber damping structure, a damping fluffy structure, a hair fluffy structure, or a damping fiber fluffy structure) through complete and fluffy treatment, so that the hydrophilic performance is increased, the damping of the main cable is improved, and the noise is effectively reduced.
As shown in a schematic cross-sectional structure of the main cable in the embodiment provided in fig. 2 (schematic cross-sectional structure of the main cable at a position where the side hanging bracket is not mounted), the main cable (2) sequentially includes, from inside to outside, a kava bearing member (12), a plurality of pairs of twisted pair signal wires (13) distributed on the periphery of the kava bearing member (12), and a main cable watertight outer sheath (14) disposed on the periphery of the twisted pair signal wires (13). The main cable (2) is also provided with a damping fiber braiding layer (15) at the periphery of the watertight outer sheath (14) of the main cable, and the damping fiber bundles 16 are led out from the damping fiber braiding layer (15).
As shown in fig. 1, the side-hanging hydrophone fiber damping array provided in this embodiment includes an instrument pod 1 disposed at the top end of a main cable 2 and a sinking block 6 disposed at the bottom end of the main cable 2. The upper end of the main cable 2 is connected with the lower end of the instrument cabin 1 through a watertight connector 7; the instrument cabin 1 is an instrument cabin with a floating body function, has the floating body function and provides the floating force under the water of the system. The sinking block 6 is connected with the lower end of the main cable 2 through a tail end bearing hanging ring 9, and a parallel connection releaser 5 is arranged between the sinking block 6 and the tail end bearing hanging ring 9; the parallel connection releaser 5 is connected with the sinking block 6 through the steel wire rope 11, under the structure, the lower end of the main cable 2 is hung on the sinking block 6 through the parallel connection releaser 5, is anchored on the sea floor, and combines the upward buoyancy of the instrument cabin to enable the whole array to be in a vertical state.
In this embodiment, the watertight connector 7 is a multi-core connector with a titanium steel structure; a plurality of pairs of twisted pair signal wires 13 in the main cable 2 are connected with corresponding core inserting terminals on the water-tight connector 7; the kava tension bearing piece 12 in the main cable 2 is fixed at the tail end of the water-tight connector 7; the main cable watertight outer sheath 14 is encapsulated with the watertight connector 7 in a watertight manner.
Specifically in this embodiment, the center of the main cable 2 is a kafu tension bearing member 12, the upper end of the main cable is fixed with the watertight connector 7, the lower end of the main cable is connected with the tail end bearing ring 9, tension is provided for the whole main cable, the strength of the main cable is determined by the thickness of the bearing member, in this embodiment, the diameter of the kafu tension bearing member is selected to be 10mm, the breaking force is not less than 7 tons, and the strength requirement of the main cable array is met. The number of the twisted signal wires 13 around the kava bearing piece 12 is identical to that of the hydrophones, each side-hung hydrophone array element is connected with one twisted pair, and the number of the twisted pairs is 32 in the embodiment. In this embodiment, the main cable watertight outer sheath 14 disposed at the periphery of the twisted pair signal line 13 is made of polyether polyurethane, and has good hydrophobic property, and in this embodiment, the wall thickness is 2mm, so that the whole cable array can be used at 6000m depth without water leakage and seepage. In this embodiment, the damping fiber braid 15 located at the outermost layer of the main cable has higher strength and good wear resistance, and protects the main cable on one hand, and introduces damping fiber bundles 16 during braiding, which are made of ultra-high molecular weight fiber materials. In this embodiment, the damping fiber bundles 16 are alternately led out in 4 rows on the braid, are uniformly distributed at 90 ° on the circumference of the main cable 2, have a length of 12cm, and are subjected to loosening/fluffing treatment to form a hair fluffing structure.
Meanwhile, as shown in fig. 1 and 3, in the fiber damping array of the side-hanging hydrophone provided in this embodiment, a plurality of side-hanging brackets which are distributed at intervals and used for installing the hydrophone are arranged on the main cable 2. The side-hung bracket comprises a mounting structural member 4 sleeved on the outer side of the main cable 2 and a protection tube 25 arranged on one side of the mounting structural member 4 and used for placing a hydrophone. Under this structure and structure, this hydrophone fibre damping array will be a plurality of hydrophones 3 according to the required side of application scene hang on a plurality of side of hanging on the main cable support, arrange into linear array, and because of rational in infrastructure ingenious, very easily carry out hydrophone's change, maintenance and inspection maintenance to can change the hydrophone of different sensitivity in a flexible way according to different application scenes, can adjust the array element interval and the array element quantity of whole array in a flexible way according to different application scenes simultaneously. In the embodiment, the number of hydrophone array elements is 32, the array elements are uniformly distributed, the spacing is 10m, namely the side hanging brackets are uniformly distributed on the main cable according to the spacing of 10 m. Of course, the number and arrangement of the array elements can be flexibly adjusted according to the application scene.
As shown in fig. 3, the side hanging bracket further comprises a clamping hoop 27 which can be buckled on the outer side of the mounting structural member 4; the protection tube 25 is provided with a wedge-shaped mounting seat 26 matched with the clamping hoop 27, and the protection tube 25 is fixedly connected with the clamping hoop 27 positioned on the outer side of the mounting structural member 4 through the wedge-shaped mounting seat 26 and is arranged on the outer side/one side of the mounting structural member 4.
In this embodiment, as shown in fig. 3 and 4, the mounting structure 4 is a hollow cylinder, and the outer wall of the cylinder is provided with a limit groove 17 and an annular groove adapted to the clip 27; the wedge-shaped mounting seat 26 is fixedly connected with a clamping hoop 27 positioned outside the annular groove through a locking screw 28 and is jointly fixed on the cylinder; the tip end of the locking screw 28 is located in the limit groove 17 of the outer wall of the cylinder. In this embodiment, namely: the hydrophone protection tube 25 is fixedly mounted to the mounting structure 4 by means of 6 locking screws 28 fastened in the limit grooves 17 of the main cable mounting structure 4 in combination with the cable clamps 27 via wedge-shaped mounting blocks 26. The limiting groove 17 of the mounting structure can play a role in limiting the movement of the hydrophone and the hydrophone set on the main cable, so that the whole hydrophone is more stable.
In this embodiment, as shown in fig. 5, the hydrophone 3 includes a hydrophone body 20 and a plurality of fixing bosses 21 provided on the outer wall of the hydrophone body 20. The hydrophone body 20 is formed by embedding polyurethane skins with piezoelectric ceramic tubes, and acoustic wave information conversion is completed by utilizing the piezoelectric effect.
In this embodiment, as shown in fig. 3 and 6, the protection tube 25 for receiving a hydrophone includes a tube body, in which a hydrophone holder 24 is disposed, and specifically as shown in fig. 6, the hydrophone holder 24 is a notched elastically deformable ring, and the hydrophone 3 is disposed in the notched non-closed ring (also referred to as a notched ring) of the hydrophone holder 24, and is mounted in the corresponding protection tube 25 after being fastened and fixed by elastic clamping of the hydrophone holder.
In some preferred embodiments, the hydrophone holder 24 is provided with a plurality of grooves 22 matched with the fixing bosses 21 on the outer wall of the hydrophone, the grooves 22 on the hydrophone holder correspond to/are matched with the fixing bosses 21 on the outer wall of the hydrophone, and the hydrophone is clamped/fixed by combining the elasticity of the notch ring of the hydrophone holder. The hydrophone card seat 24 is also provided with a plurality of screw holes 23 for installing fixing screws to fix the hydrophone card seat on the protective pipe body. In this embodiment, the hydrophone cartridge 24 is secured to the body of the protection tube 25 by a threaded connection. Namely: the clamping seat fixing screw 29 penetrates through the pipe body of the protection pipe 25 and is in threaded connection with the screw hole 23 on the hydrophone clamping seat 24.
In this embodiment, the hydrophone cartridge 24 is a notched plastic ring. The hydrophone cartridge 24 is mounted into the hydrophone housing tube 25 after gripping the hydrophone and secured to the hydrophone housing tube with 3 cartridge set screws 29. In this embodiment, the locking screw 28 and the socket fixing screw 29 are both M4 screws.
In certain preferred embodiments, the fixing bosses 21 are circumferentially distributed on the outer wall of the hydrophone 3. The grooves 22 are circumferentially and uniformly distributed on the notched ring of the hydrophone cartridge 24. In this embodiment, four fixing bosses 21 on the outer wall of the hydrophone are uniformly distributed circumferentially at 90 ° on the circumference of the hydrophone. Similarly, four grooves 22 are circumferentially and uniformly distributed on the notched ring of the hydrophone cartridge 24. Four grooves 22 on the hydrophone card seat are in one-to-one correspondence with four fixing bosses 21 on the outer wall of the hydrophone, and the hydrophone is clamped together by combining the elasticity of the notch ring of the hydrophone card seat.
As can be seen in fig. 4 and 5, in this embodiment, each mounting structure 4 is provided with a first water-tight connector 18 in signal connection with one pair of twisted signal wires 13; each hydrophone is provided with a second watertight connector 19 in signal connection with the corresponding first watertight connector 18. In particular, in this embodiment, the first watertight connector 18 and the second watertight connector 19 are 2-core watertight connectors, which are symmetrical structures of hermaphrodite. In this embodiment, specifically, the signal is led out from the male end of the second watertight connector 19, connected to the female end of the corresponding first watertight connector 18 on the main cable side, and further transmitted into the instrument pod 1 through a pair of twisted pair signal wires inside the main cable and in signal connection with the first watertight connector 18 for information acquisition, storage and processing.
Meanwhile, in the embodiment, the mounting structural member 4 sleeved outside the main cable 2 is a polyurethane mounting structural member formed by pouring polyurethane for vulcanization; the mounting structural member 4 is in sealing connection with the watertight outer sheath 14 of the main cable through heat vulcanization; the first watertight connector 18 is connected with the main cable watertight outer sheath 14 by heat vulcanization sealing.
In this embodiment, each hydrophone 3 is installed in a corresponding protecting tube 25, and the second watertight connector 19 on each hydrophone is in signal connection with the first watertight connector 18 on the corresponding installation structure 4, and is further in signal connection with one pair of twisted pair signal wires 13 corresponding to the hydrophone inside the main cable 2. It can also be said that: one end of each first watertight connector 18 is in signal connection with one pair of twisted pair signal wires 13 corresponding to the first watertight connector, and the plug-in end is in signal connection with a second watertight connector 19 on the hydrophone 3 corresponding to the plug-in end. Each first watertight connector 18 is welded with the main cable watertight outer sheath 14 into a whole through heat vulcanization, so as to achieve watertight sealing.
The embodiment also provides a preparation method of the fiber damping array of the side-hung hydrophone, which comprises the following steps of pretreatment of fiber bundles, vulcanization of a mounting structural member, mounting of the hydrophone and formation of a damping fluffy structure, so that the fiber damping array of the side-hung hydrophone is obtained:
wherein the step of pretreating the fiber bundle comprises:
a0 Twisting the multi-strand fiber into a curved damping fiber bundle; the diameter of the damping fiber bundles can be adjusted according to actual conditions;
wherein the step of curing the mounting structure comprises:
b0 Splitting the watertight outer sheath 14 of the main cable at a plurality of preset positions (positions of preset mounting side hanging brackets) on the main cable 2, pulling out the corresponding twisted pair signal wires 13 to be connected with the corresponding first watertight connectors 18 and then resetting, and further forming a plurality of mounting structural members 4 which are sleeved on the outer side of the main cable 2 through vulcanization and are in sealing connection with the watertight outer sheath 14 of the main cable and the corresponding first watertight connectors 18 at the corresponding split positions; the vulcanization process in this embodiment specifically includes: the position of the side-hung bracket is preset on the main cable 2, the polyurethane is poured into the mold under the high temperature condition, the polyurethane mounting structural member is formed after cooling molding, the poured polyurethane and the watertight outer sheath of the main cable are made of the same material, the watertight outer sheath part of the main cable corresponding to the splitting position is melted at high temperature, the polyurethane mounting structural member formed after cooling molding and the watertight outer sheath part of the polyurethane corresponding to the splitting position are integrated, and watertight performance is not affected, namely: the installation structural member 4 is in sealing connection with the main cable watertight outer sheath 14 at the corresponding cut-out position through hot vulcanization; in the vulcanization process, the corresponding first watertight connector 18 passes through the part of the main cable corresponding to the cut-out position and is welded with the mounting structural member 4 and the main cable watertight outer sheath 14 into a whole through heat vulcanization, so that watertight sealing effect is achieved;
wherein the step of installing the hydrophone comprises:
c1 A plurality of protective tubes 25 are arranged on one side of the mounting structural member 4; the method comprises the following steps: a plurality of protection pipes 25 are fixedly connected with clamping hoops 27 positioned on the outer side of each installation structural member 4 through wedge-shaped installation seats 26 and are arranged on one side of the installation structural members 4;
c2 Mounting each hydrophone 3 into a corresponding protective tube 25; the second watertight connector 19 on each hydrophone is in signal connection with the first watertight connector 18 on the corresponding mounting structure 4;
wherein the step of forming the damping fluff structure comprises:
d1 Weaving damping fiber bundles 16 pretreated in the step A0) from the damping fiber woven layer 15 at the periphery of the main cable 2, namely weaving the damping fiber woven layer 15 by using the damping fiber bundles pretreated in the step A0) to obtain a curved damping fiber bundle, alternately leading out a plurality of damping fiber bundles 16 in the weaving process, and circumferentially and uniformly distributing the damping fiber bundles 16 distributed at intervals at the periphery of the main cable 2; further, the drawn damping fiber bundles 16 are fluffed (scattered, disturbed, etc.), so that the bent fibers in the same and/or adjacent damping fiber bundles 16 are intertwined with each other to form a fiber damping structure (the state of intertwining after the fluffing is not shown in the figure).
In the step C2), each hydrophone 3 is placed in the non-closed ring of the hydrophone card seat, and is installed in the corresponding protection tube 25 after being clamped and fixed by the elasticity of the notch ring of the hydrophone card seat.
In step B0), the damping fiber bundles are removed/cut at the positions of the preset side hanging brackets on the main cable 2, and then the damping fiber braid 15 and the watertight outer sheath 14 of the main cable are cut in sequence, and then the corresponding twisted pair signal wires 13 are pulled out for subsequent operation. Alternatively, in step D1), the predetermined positions are selectively skipped, i.e. the damping fiber bundles are not alternately woven directly from the damping fiber woven layer at the predetermined positions, specifically: and at the position of not installing the side hanging bracket on the periphery of the main cable of the array, a plurality of damping fiber bundles 16 which are uniformly distributed in the circumferential direction are alternately led out on the damping fiber braiding layer 15 of the main cable 2. Of course, if the damping fiber bundles led out from the damping fiber woven layer are arranged at the positions corresponding to the side hanging brackets, the corresponding damping fiber bundles need to be removed first, and then the subsequent operation is carried out.
In the side-hanging hydrophone fiber damping array provided by the invention, a plurality of damping fiber bundles 16 uniformly distributed on the periphery of the damping fiber woven layer 15 cover the whole array cable or part of the array cable, fibers in the same damping fiber bundle 16 are mutually wound, and fibers between adjacent damping fiber bundles 16 are mutually wound, so that noise can be remarkably reduced.
The fiber damping structure described herein may also be referred to as a fiber fluff structure, or a damping fluff structure, or a hair fluff structure, or a damping fiber fluff structure, that is: the fiber is subjected to bending and fluffing treatment to form a fluffy structure formed by winding curled hair/fiber. It can also be said that: after the damping fibers in the bent shape are fluffed, the same and/or adjacent damping fiber bundles are mutually entangled to form a fluffy structure (the state of mutual entanglement after the fluffing is not shown in the figure). The hydrophones described herein may also be referred to as hydrophone array elements. The twisted pair signal lines may also be referred to herein as twisted pairs. The wedge mount may also be referred to herein as a wedge assembly and the clamp may also be referred to herein as a clamp. The mounting structure described herein may also be referred to as a mounting bracket. The protective tube described herein may also be referred to as a shield, i.e., a protective tube/shield for receiving a hydrophone, may also be referred to as a hydrophone protective tube, or a hydrophone shield. The 2-core watertight connector described herein may also be referred to as a two-core watertight connector. The "/" herein indicates or.
The invention protects the shape, structure and structure of the provided side-hanging hydrophone fiber damping array and the preparation method of the provided side-hanging hydrophone fiber damping array. The above embodiments do not limit the present invention, and various changes and modifications can be made by the related workers within the scope of not departing from the technical spirit of the present invention, all of which fall within the scope of protection of the present invention.
Claims (9)
1. The preparation method of the fiber damping array of the side-hung hydrophone is characterized by comprising the following steps of pretreatment of fiber bundles, vulcanization of a mounting structural member, mounting of the hydrophone and formation of a damping fluffy structure:
wherein the step of pretreating the fiber bundle comprises:
a0 Twisting the multi-strand fiber into a curved damping fiber bundle;
wherein the step of curing the mounting structure comprises:
b0 Splitting the watertight outer sheath (14) of the main cable at a plurality of preset positions on the main cable (2), pulling out the corresponding twisted pair signal wires (13) to enable the corresponding twisted pair signal wires to be connected with the corresponding first watertight connectors (18) and then resetting the corresponding twisted pair signal wires, and further forming a plurality of mounting structural members (4) which are sleeved on the outer side of the main cable (2) through vulcanization and are in sealing connection with the watertight outer sheath (14) of the main cable and the corresponding first watertight connectors (18) at the corresponding split positions;
wherein the step of installing the hydrophone comprises:
c1 A plurality of protection pipes (25) are arranged on one side of the installation structural member (4);
c2 -mounting each hydrophone (3) in a corresponding protective tube (25); the second watertight connector (19) on each hydrophone is in signal connection with the first watertight connector (18) on the corresponding mounting structural member (4);
wherein the step of forming the damping fluff structure comprises:
d1 Weaving damping fiber bundles (16) pretreated in the step A0) from a damping fiber weaving layer (15) at the periphery of the main cable (2), and fluffing the damping fiber bundles (16) to enable bent fibers in the same and/or adjacent damping fiber bundles (16) to be mutually wound to form a fiber damping structure;
the side-hung hydrophone fiber damping array comprises a main cable (2); a plurality of side hanging brackets which are distributed at intervals along the length direction of the main cable (2) and are used for installing the hydrophone are arranged on the main cable (2);
and a plurality of damping fiber bundles (16) which are distributed at intervals are arranged on the outer side of the main cable (2).
2. The method for preparing the side-hung hydrophone fiber damping array according to claim 1, wherein:
the step C1) is specifically as follows: a plurality of protection pipes (25) are fixedly connected with clamping hoops (27) positioned at the outer sides of the installation structural members (4) through wedge-shaped installation seats (26) and are arranged at one side of the installation structural members (4);
in the step C2), each hydrophone (3) is arranged in the non-closed circular ring of the hydrophone card seat, and is installed in the corresponding protection tube (25) after being clamped and fixed by the elasticity of the hydrophone card seat.
3. A side-hung hydrophone fiber damping array, which is prepared by the preparation method of the side-hung hydrophone fiber damping array according to claim 1 or 2; the main cable (2) sequentially comprises a kava bearing piece (12), a plurality of pairs of twisted pair signal wires (13) distributed on the periphery of the kava bearing piece (12) from inside to outside, and a main cable watertight outer sheath (14) arranged on the periphery of the twisted pair signal wires (13).
4. A side-hung hydrophone fibre damping array according to claim 3, characterised in that the main cable (2) further comprises a damping fibre braid (15) arranged at the periphery of the main cable watertight outer sheath (14); the damping fiber bundles (16) are led out from the damping fiber woven layer (15).
5. A side-hung hydrophone fibre damping array according to claim 3, further comprising a nacelle (1) arranged at the top end of the main cable (2) and a sinker (6) arranged at the bottom end of the main cable (2);
the sinking block (6) is connected with the main cable (2) through a tail end bearing hanging ring (9), and a parallel releaser (5) is arranged between the sinking block (6) and the tail end bearing hanging ring (9); the parallel connection releaser (5) is connected with the sinking block (6) through a steel wire rope (11);
the main cable (2) is connected with the instrument cabin (1) through a watertight connector (7); the instrument cabin (1) is an instrument cabin with a floating body function.
6. A side-hung hydrophone fibre damping array according to claim 3 characterised in that the side-hung bracket comprises a mounting structure (4) arranged around the outside of the main cable (2) and a protective tube (25) arranged on one side of the mounting structure (4) for receiving the hydrophone.
7. The side-hung hydrophone fiber damping array of claim 6, wherein the side-hung bracket further comprises a clamping hoop (27) which can be buckled on the outer side of the mounting structural member (4);
the protection pipe (25) is provided with a wedge-shaped mounting seat (26) matched with the clamping hoop (27), the protection pipe (25) is fixedly connected with the clamping hoop (27) positioned on the outer side of the mounting structural member (4) through the wedge-shaped mounting seat (26), and the protection pipe is arranged on one side of the mounting structural member (4).
8. The side-hung hydrophone fiber damping array according to claim 6, wherein the outer wall of the hydrophone (3) is provided with a plurality of fixing bosses (21);
the protection tube (25) for placing the hydrophone comprises a tube body, wherein a hydrophone clamping seat (24) is arranged in the tube body, and the hydrophone clamping seat (24) is a notched and elastically deformable non-closed circular ring; the hydrophone card seat (24) is provided with a plurality of grooves (22) which are matched with the fixing bosses (21) on the outer wall of the hydrophone.
9. A side-hung hydrophone fibre damping array according to claim 3, characterised in that the damping fibre bundles (16) are of fibre-fluffy construction; and/or the damping fiber bundles (16) are circumferentially distributed on the outer side of the main cable (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210493529.6A CN114910154B (en) | 2022-04-26 | 2022-04-26 | Side-hanging hydrophone fiber damping array and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210493529.6A CN114910154B (en) | 2022-04-26 | 2022-04-26 | Side-hanging hydrophone fiber damping array and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114910154A CN114910154A (en) | 2022-08-16 |
| CN114910154B true CN114910154B (en) | 2023-12-05 |
Family
ID=82766773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210493529.6A Active CN114910154B (en) | 2022-04-26 | 2022-04-26 | Side-hanging hydrophone fiber damping array and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114910154B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030401A (en) * | 1975-06-04 | 1977-06-21 | Wall Industries, Inc. | Faired article |
| GB1525422A (en) * | 1976-05-04 | 1978-09-20 | Sanders Associates Inc | Hydrophone array system |
| US4491939A (en) * | 1981-08-13 | 1985-01-01 | The Commonwealth Of Australia | Hydrophone cable |
| US5067384A (en) * | 1989-01-23 | 1991-11-26 | Cortland Cable Company, Inc. | Braider method and apparatus for manufactured faired rope or cable |
| US6160763A (en) * | 1998-12-28 | 2000-12-12 | Sealandaire Technologies, Inc. | Towed array hydrophone |
| KR20050046361A (en) * | 2003-11-14 | 2005-05-18 | 한국해양연구원 | Inductively controlled hydrophone array system |
| GB8613403D0 (en) * | 1986-06-03 | 2010-04-07 | Stc Plc | Towed sensor arrays |
| CN104848900A (en) * | 2015-05-26 | 2015-08-19 | 国家海洋技术中心 | Array-type ocean acoustical signal measurement system |
| CN109724688A (en) * | 2019-02-20 | 2019-05-07 | 海鹰企业集团有限责任公司 | A kind of hydrophone array array structure |
| CN110057442A (en) * | 2019-03-14 | 2019-07-26 | 天津大学 | The inexpensive acoustic pressure detection method for carrying out USB line as sensor in liquid |
| CN110388981A (en) * | 2019-08-29 | 2019-10-29 | 湖南长城海盾光纤科技有限公司 | Fibre optic hydrophone array element for conformal array |
| CN211061047U (en) * | 2019-11-06 | 2020-07-21 | 湖南长城海盾光纤科技有限公司 | Vertical suspension type vector hydrophone array and submerged buoy system |
| CN113405651A (en) * | 2021-06-23 | 2021-09-17 | 中国船舶重工集团公司第七一五研究所 | Flexible hydrophone for fixed array |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100381890B1 (en) * | 2000-08-04 | 2003-04-26 | 국방과학연구소 | Supporting structure of hydrophone for towed array sonar system |
| EP1546773A2 (en) * | 2002-10-04 | 2005-06-29 | Sabeus Photonics, Inc. | Rugged fiber optic array |
-
2022
- 2022-04-26 CN CN202210493529.6A patent/CN114910154B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030401A (en) * | 1975-06-04 | 1977-06-21 | Wall Industries, Inc. | Faired article |
| GB1525422A (en) * | 1976-05-04 | 1978-09-20 | Sanders Associates Inc | Hydrophone array system |
| US4491939A (en) * | 1981-08-13 | 1985-01-01 | The Commonwealth Of Australia | Hydrophone cable |
| GB8613403D0 (en) * | 1986-06-03 | 2010-04-07 | Stc Plc | Towed sensor arrays |
| US5067384A (en) * | 1989-01-23 | 1991-11-26 | Cortland Cable Company, Inc. | Braider method and apparatus for manufactured faired rope or cable |
| US6160763A (en) * | 1998-12-28 | 2000-12-12 | Sealandaire Technologies, Inc. | Towed array hydrophone |
| KR20050046361A (en) * | 2003-11-14 | 2005-05-18 | 한국해양연구원 | Inductively controlled hydrophone array system |
| CN104848900A (en) * | 2015-05-26 | 2015-08-19 | 国家海洋技术中心 | Array-type ocean acoustical signal measurement system |
| CN109724688A (en) * | 2019-02-20 | 2019-05-07 | 海鹰企业集团有限责任公司 | A kind of hydrophone array array structure |
| CN110057442A (en) * | 2019-03-14 | 2019-07-26 | 天津大学 | The inexpensive acoustic pressure detection method for carrying out USB line as sensor in liquid |
| CN110388981A (en) * | 2019-08-29 | 2019-10-29 | 湖南长城海盾光纤科技有限公司 | Fibre optic hydrophone array element for conformal array |
| CN211061047U (en) * | 2019-11-06 | 2020-07-21 | 湖南长城海盾光纤科技有限公司 | Vertical suspension type vector hydrophone array and submerged buoy system |
| CN113405651A (en) * | 2021-06-23 | 2021-09-17 | 中国船舶重工集团公司第七一五研究所 | Flexible hydrophone for fixed array |
Non-Patent Citations (1)
| Title |
|---|
| 水下双阵列拖曳系统缆破断情况下的运动响应;王飞 等;《上海交通大学学报》(02);第105-114页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114910154A (en) | 2022-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2007242934B2 (en) | Seismic streamer having directionally sensitive sensors in an array to attentuate longitudinally traveling waves | |
| US7545703B2 (en) | Marine seismic streamer with varying spacer distances for reducing towing noise | |
| AU688067B2 (en) | Semi-dry marine seismic streamer cable section | |
| US20110005801A1 (en) | Ocean bottom cable and sensor unit | |
| US8995221B2 (en) | Towed marine sensor streamer having concentric stress member | |
| CN110761095B (en) | Hybrid mooring rope for ocean observation buoy mooring system and buoy mooring system | |
| AU2016200285A1 (en) | Solid seismic streamer cable and method | |
| CN101533136A (en) | Lightning protection layer stranded optical cable | |
| CN114910154B (en) | Side-hanging hydrophone fiber damping array and preparation method thereof | |
| US20080008034A1 (en) | Marine seismic survey streamer configuration for reducing towing noise | |
| US20160033660A1 (en) | Internal bend restrictor for opto/electrical armored cables | |
| US20040125698A1 (en) | Unitary multi-cable towing system | |
| CN211061047U (en) | Vertical suspension type vector hydrophone array and submerged buoy system | |
| CA1260323A (en) | Tapered wiring harness | |
| CN211112889U (en) | Hybrid mooring rope for ocean observation buoy mooring system and buoy mooring system | |
| GB2439816A (en) | Marine seismic survey streamer construction for reducing towing noise | |
| CN115046627B (en) | Variable-pitch fiber damping array based on self-contained hydrophone and preparation method thereof | |
| CN217276495U (en) | Nested hydrophone array element and hydrophone array | |
| CN114659615B (en) | Hydrophone nested fiber damping array and processing method | |
| CN216526282U (en) | Supporting and positioning framework structure of towed linear array | |
| CN201247628Y (en) | Acoustics wavemeter cable for sea detection | |
| CN217276496U (en) | Hydrophone side-hanging bracket | |
| CN113885013A (en) | Support and positioning framework structure of drag line array | |
| CN216487415U (en) | Sewer tow chain detecting cable | |
| CN217560785U (en) | Self-contained hydrophone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |