Low-noise ribbon vertical array based on vertical vibration isolation mixed vortex breaking analysis

Abstract

The invention discloses a low-noise ribbon vertical array based on vertical vibration isolation mixed vortex breaking analysis. According to the invention, the specially designed vibration isolation section is arranged to isolate the wind wave flow impact vibration of the hydrophone vertical receiving array in the tension mooring state; the hydrophone vertical receiving array receives underwater acoustic signals under the sea depth condition in a mode of combining a carrier cable vulcanization hydrophone and a multi-array-element oil-filled receiving array section. Meanwhile, the upper vertical mixing section and the lower vertical mixing section are woven through fixed-width woven polyester ribbons with high flexibility, alternating vortex breaking can be effectively formed after the cylinders flow around, and therefore transverse flow-induced vibration of the cylinders is effectively reduced. The low-frequency vibration frequency of the vertical array provided by the invention under the action of typical ocean current is about 9Hz, the vertical vibration isolation capability is below 50Hz and reaches more than 20dB, and the horizontal flow-induced noise suppression capability reaches more than 10dB, so that high-quality acquisition of acoustic data in a large depth range is realized.

Description

Technical Field

[0001] The present invention relates to a deep sea vertical array in the field of deep sea ocean acoustic environment, background field and target acoustic characteristic detection and monitoring, and specifically relates to a low noise ribbon vertical array based on vertical vibration isolation mixed vortex crushing analysis. Background Art

[0002] Deep sea vertical array is an effective means for deep sea ocean environmental noise background field, channel characteristics and underwater target detection. Deep sea vertical arrays arranged over a large area often cover the seabed from 100-200 meters above the sea surface. Since the vertical array needs to be laid vertically, gravity anchors are used to anchor the bottom of the vertical array, and large buoyancy blocks are used to provide buoyancy at the top, so that the entire vertical array is in a state of tension. The vertical array in a tension state is easily affected by the wind and wave currents on the top of the sea surface, which causes the vertical array to vibrate longitudinally. At the same time, the vertical array is arranged vertically and is affected by lateral flows such as ocean currents. In a tension state, it is like a "string" plucked by the flow. The vibration generated by itself excites the hydrophone, causing the hydrophone to be disturbed by the outside, thereby affecting the quality of the received signal. To this end, various methods are used to reduce vertical and horizontal vibrations, such as weaving hair in the vertical array to remove high-frequency noise, arranging the hydrophone in the deep sea with less environmental noise, installing the load-bearing cable and the hydrophone separately for vibration reduction, and using oil-filled arrays for vibration isolation. These methods have solved some of the interference problems to a certain extent, but various forms of measures still have certain inconveniences and new problems.

[0003] It is generally believed that the effect of ocean currents in deep sea conditions is small, so in the detection research of deep sea acoustic background field, only deep sea vertical arrays are deployed, which can avoid the effect of wind and wave currents on the sea surface. However, recent studies have found that deep sea currents also exist, and they will generate noise for the vertical arrays deployed in the deep sea (approximately cylindrical flow produces low-frequency vibrations). To this end, the existing means of removing this flow-induced noise is to weave relatively fine fiber materials (similar to hair) on the surface of the vertical array. This type of hair array can effectively suppress lateral flow-induced noise; however, after repeated use, due to the effect of seawater and aging of the fibers, the hair is very easy to knot into clumps and stick together to form a more complex solid-like structure, which will instead form a more complex flow-induced vibration.

[0004] In addition, in the vertical array deployed at full sea depth, in order to remove vertical vibration, an oil-filled array will be used (i.e., the hydrophone and the load-bearing rope are installed in the PU sheath and the PU sheath is filled with oil). This can effectively isolate vertical vibration, and the selection of the oil-filled medium can isolate the "false sound" of flow-induced vibration. However, the oil-filled array still has many problems, such as the difficulty in making a long-distance array, and the "real sound" radiated to the hydrophone by the vibration of the PU sheath itself under the action of flow-induced vibration. Therefore, in recent years, a solution has been developed that uses load-bearing cables or load-bearing ropes as mooring equipment, and even weaves fine fiber hair on the load-bearing cables or load-bearing ropes to cover the deep sea range of self-contained hydrophone arrays, and uses vibration-damping rubber parts to connect self-contained hydrophones on them. The essence of this design is to isolate the vibration transmission between the mooring rope and the hydrophone under tension mooring conditions, thereby reducing noise. Although this type of design can reduce vertical and lateral noise, its structure is complex and difficult to deploy, and there are also common problems such as hair tangling. Summary of the invention

[0005] In view of the vertical vibration and flow-induced vibration existing in the vertical array in the deep-sea and large-depth coverage range, the present invention proposes a low-noise streamer vertical array based on vertical vibration isolation mixed vortex crushing analysis. The present invention isolates the wind, wave and current impact vibration of the hydrophone vertical receiving array under the tension mooring state by arranging a specially designed vibration isolation section; the hydrophone vertical receiving array uses a load-bearing cable vulcanized hydrophone and a multi-element oil-filled receiving array section to receive the hydroacoustic signal under deep sea conditions. At the same time, the upper and lower vertical mixing sections are woven with a fixed-width woven polyester streamer with high flexibility, which can effectively break the alternating vortex formed after the cylinder flows around, thereby effectively reducing its lateral flow-induced vibration. The low-frequency vibration frequency of the vertical array proposed by the present invention under the action of typical ocean currents is about 9Hz. Therefore, the present invention adopts vertical vibration isolation and vortex crushing technology to improve the receiving signal-to-noise ratio of the vertical array, and can achieve high-quality acquisition of acoustic data in scenarios such as deep-sea marine environment surveys, dynamic environment monitoring, and acoustic target detection.

[0006] The technical solution of the present invention is as follows: A low-noise streamer vertical array based on vertical vibration isolation mixing vortex breakup analysis includes a main control electronic warehouse and two vertical mixing sections, the two vertical mixing sections are symmetrically installed at the upper and lower ends of the main control electronic warehouse; each of the vertical mixing sections includes a proximal vibration isolation section, a multi-element oil-filled receiving array section, a load-bearing cable sulfurized hydrophone receiving array section, a rotation isolation section, and a distal vibration isolation section arranged in sequence along a direction away from the main control electronic warehouse, the proximal vibration isolation section and the multi-element oil-filled receiving array section, the multi-element oil-filled receiving array section and the load-bearing cable sulfurized hydrophone receiving array section are all connected through corresponding electrical connectors, and corresponding streamers are arranged outside the proximal vibration isolation section, the multi-element oil-filled receiving array section, the load-bearing cable sulfurized hydrophone receiving array section and the distal vibration isolation section.

[0007] The main control electronic warehouse includes an exoskeleton, a glass bead buoyancy shell, a pressure-resistant shell, an atomic clock, a main control module, a battery pack, an upper acquisition storage module, and a lower acquisition storage module; the pressure-resistant shell is placed in the glass bead buoyancy shell, the glass bead buoyancy shell is installed in the exoskeleton, the main control module, the atomic clock, the battery pack, the upper acquisition storage module and the lower acquisition storage module are all installed in the pressure-resistant shell, the main control module is connected to the atomic clock, the upper acquisition storage module and the lower acquisition storage module are both connected to the main control module, the battery pack is connected to the upper acquisition storage module, the lower acquisition storage module, and the main control module, and the main control module is connected to the vertical mixing sections at the upper and lower ends through interconnecting cables.

[0008] The proximal vibration isolation section includes a vibration isolation inner skeleton, a PU sheath, insulating oil, an elastic rope and a rigid rope. The vibration isolation inner skeleton is installed in the PU sheath and the PU sheath is filled with insulating oil. One end of the elastic rope is connected to the electrical connector at one end of the proximal vibration isolation section, and the other end of the elastic rope passes through several vibration isolation inner skeletons and then is connected to the electrical connector at the other end of the proximal vibration isolation section. One end of the rigid rope is connected to the electrical connector at one end of the proximal vibration isolation section, and the other end of the rigid rope passes through several vibration isolation inner skeletons and then is connected to the electrical connector at the other end of the proximal vibration isolation section.

[0009] The elastic cord comprises an elastic nylon cord.

[0010] The rigid cord comprises a Kevlar cord.

[0011] The load-bearing cable vulcanized hydrophone receiving array section comprises a load-bearing cable, a hydrophone vulcanized layer, a vulcanized hydrophone, a vulcanized load-bearing head and a load-bearing connector; one end of the load-bearing cable is connected to an electrical connector at a multi-element oil-filled receiving array section through a vulcanized load-bearing head, a plurality of hydrophone vulcanized layers are installed outside the load-bearing cable at intervals along the axial direction of the load-bearing cable, a corresponding vulcanized hydrophone is installed in each hydrophone vulcanized layer, and the other end of the load-bearing cable is connected to a rotating isolation section through a load-bearing connector.

[0012] The rotating isolation section comprises a shackle and a rotating ring; the two ends of the rotating ring are respectively connected to a corresponding shackle, and the two shackles are respectively connected to the vulcanized hydrophone receiving array section of the bearing cable and the far-end vibration isolation section.

[0013] The streamers are formed by a plurality of polyester belts which are woven in a double layer in an oblique manner and then led out at the near-end vibration isolation section, the multi-element oil-filled receiving array section, the load-bearing cable vulcanized hydrophone receiving array section or the far-end vibration isolation section.

[0014] The material of the outer frame and the pressure-resistant shell is titanium alloy.

[0015] The multi-element oil-filled receiving array segment comprises a vibration isolation inner frame, a PU sheath, insulating oil, an elastic rope and a rigid rope. The vibration isolation inner frame is installed in the PU sheath and the PU sheath is filled with insulating oil. A plurality of hydrophones arranged at intervals are installed in the vibration isolation inner frame. One end of the elastic rope is connected to an electrical connector at one end of the proximal vibration isolation segment, and the other end of the elastic rope passes through a plurality of vibration isolation inner frames and then is connected to an electrical connector at the other end of the proximal vibration isolation segment. One end of the rigid rope is connected to an electrical connector at one end of the multi-element oil-filled receiving array segment, and the other end of the rigid rope passes through a plurality of vibration isolation inner frames and then is connected to an electrical connector at the other end of the multi-element oil-filled receiving array segment.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a load-bearing vertical vibration isolation section and a horizontally woven fixed-width polyester ribbon structure, which greatly improves the quality of acoustic signal collection by hydrophones arranged arbitrarily in the vertical array within the full sea depth range.

[0017] 2. The vertical array of the present invention has a simple structure and is connected to form a vertical cable array when the deck is integrated. There is no need to install other equipment during the deployment and recovery process, making deployment and recovery simple and efficient.

[0018] 3. The vertical array of the present invention can be designed and installed into hydrophone arrays with unequal spacing as required, so as to meet different design requirements on one vertical array.

[0019] 4. The vertical vibration isolation capability of the low-noise ribbon vertical array proposed by the present invention reaches more than 20dB below 50Hz, and the horizontal flow-induced noise suppression capability reaches more than 10dB. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a low-noise streamer vertical array based on vertical vibration isolation mixing vortex breakup analysis.

[0021] Figure 2 It is a structural diagram of the main control electronic warehouse.

[0022] Figure 3 It is a structural schematic diagram of the proximal vibration isolation section and the distal vibration isolation section.

[0023] Figure 4 It is a schematic diagram of the overall structure of the ribbon.

[0024] Figure 5 It is a schematic diagram of the structure of the receiving array section of the load-bearing cable vulcanized hydrophone.

[0025] Figure 6 It is a structural schematic diagram of a multi-element oil-filled receiving array segment.

[0026] Figure 7This is a detailed diagram of the streamer.

[0027] In the figure: interconnect cable 1, external skeleton 2, glass bead buoyancy shell 3, pressure-resistant shell 4, atomic clock 5, main control module 6, battery pack 7, upper acquisition storage module 8, lower acquisition storage module 9, proximal vibration isolation section 10, electrical connector 11, multi-element oil-filled receiving array section 12, streamer 13, load-bearing cable 14, hydrophone vulcanization layer 15, vulcanized hydrophone 16, shackle 17, rotating ring 18, distal vibration isolation section 19, debugging port 20, timing port 21, elastic nylon rope 22, Kevlar rope 23, vibration isolation inner skeleton 24, PU sheath 25, insulating oil 26, load-bearing cable vulcanized hydrophone receiving array section 27, vulcanized load-bearing head 28, load-bearing connector 29, hydrophone in section 30. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] like Figure 1 and Figure 4As shown, the low-noise streamer vertical array (i.e., hydrophone vertical receiving array) proposed by the present invention includes a main control electronic warehouse and two vertical mixing sections, which are symmetrically installed at the upper and lower ends of the main control electronic warehouse. Each vertical mixing section includes a proximal vibration isolation section 10, a multi-element oil-filled receiving array section 12, a load-bearing cable vulcanized hydrophone receiving array section 27, a rotation isolation section, and a distal vibration isolation section 19, which are arranged in sequence in the direction away from the main control electronic warehouse. The proximal vibration isolation section 10 and the multi-element oil-filled receiving array section 12, and the multi-element oil-filled receiving array section 12 and the load-bearing cable vulcanized hydrophone receiving array section 27 are connected through corresponding electrical connectors 11, and the proximal vibration isolation section 10 is connected to the main control electronic warehouse. Corresponding streamers 13 are arranged outside the proximal vibration isolation section 10, the multi-element oil-filled receiving array section 12, the load-bearing cable vulcanized hydrophone receiving array section 27, and the distal vibration isolation section 19. The vertical array can be deployed alone in the form of a buoy, or it can be combined with other equipment as part of a buoy to form a more complex buoy for deployment.

[0031] like Figure 2 As shown, the main control electronic warehouse includes an exoskeleton 2, a glass microbead buoyancy shell 3, a pressure-resistant shell 4, an atomic clock 5, a main control module 6, a battery pack 7, an upper acquisition storage module 8 and a lower acquisition storage module 9; the pressure-resistant shell 4 is placed in the glass microbead buoyancy shell 3, the glass microbead buoyancy shell 3 is installed in the exoskeleton 2, the main control module 6, the atomic clock 5, the battery pack 7, the upper acquisition storage module 8 and the lower acquisition storage module 9 are all installed in the pressure-resistant shell 4, and the pressure-resistant shell 4 is used as a watertight device. The glass microbead buoyancy shell 3 provides buoyancy. The exoskeleton 2 and the pressure-resistant shell 4 are made of titanium alloy. The atomic clock 5 is a high-precision atomic clock. The main control module 6 is connected to the atomic clock 5, the upper acquisition storage module 8 and the lower acquisition storage module 9 are both connected to the main control module 6, the battery pack 7 is connected to the upper acquisition storage module 8, the lower acquisition storage module 9, and the main control module 6, and the main control module 6 is connected to the proximal vibration isolation section 10 of the vertical mixing section at the upper and lower ends through the interconnection cable 1 and the electrical connector 11. The pressure-resistant shell 4 near the atomic clock 5 is also provided with a debugging port 20 and a timing port 21. The debugging port can be used to send the planned task list of the device, and the timing port can be used to send the time base signal of the entire system. The atomic clock 5 is used to obtain the time base signal. The main control circuit is used for circuit duty, clock signal reading, and the formulation and sending and storage of the receiving list. The battery pack 7 is a lithium battery for power supply. The power control module is used to receive the command of the main control unit to turn on and off the power of each device. The upper and lower acquisition storage module is used for receiving and storing sound signals.

[0032] like Figure 3As shown, the proximal vibration isolation section 10 includes a vibration isolation inner skeleton 24, a PU sheath 25, insulating oil 26, an elastic rope and a rigid rope. The vibration isolation inner skeleton 24 is installed in the PU sheath 25 and the PU sheath 25 is filled with insulating oil 26. One end of the elastic rope is connected to the electrical connector 11 at one end of the proximal vibration isolation section 10 (i.e., the end close to the main control electronic compartment), and the other end of the elastic rope passes through several vibration isolation inner skeletons 24 and then is connected to the electrical connector 11 at the other end of the proximal vibration isolation section 10 (i.e., the end close to the multi-element oil-filled receiving array section 12). One end of the rigid rope is connected to the electrical connector 11 at one end of the proximal vibration isolation section 10, and the other end of the rigid rope passes through several vibration isolation inner skeletons 24 and then is connected to the electrical connector 11 at the other end of the proximal vibration isolation section 10.

[0033] The structure of the distal vibration isolation section 19 is the same as that of the proximal vibration isolation section 10. The connectors before and after the proximal vibration isolation section use electrical connectors 11, while the distal vibration isolation section does not need to transmit acoustic signals, so a load-bearing connector with a metal structure is used. Therefore, in the distal vibration isolation section 19, the two ends of the elastic rope and the rigid rope are connected to the shackle 17 and the load-bearing connector 29 of the rotating isolation section. The proximal vibration isolation section 10 and the distal vibration isolation section 19 are used to isolate the impact vibration that may exist in the central electronic warehouse. The elastic rope includes an elastic nylon rope 22. The rigid rope includes a Kevlar rope 23. The elastic nylon rope is load-bearing, and the Kevlar rope is limited. The vibration isolation section needs to be supported by a vibration isolation inner skeleton 24 after the distance becomes longer. Due to the requirements of acoustic signal transmission, the proximal vibration isolation section needs to arrange the same number of wires as the multi-element oil-filled receiving array section inside. The distal vibration isolation section has no signal transmission requirements, so no wires need to be arranged.

[0034] like Figure 6 As shown, the multi-element oil-filled receiving array segment 12 includes a vibration isolation inner skeleton 24, a PU sheath 25, insulating oil 26, an elastic rope and a rigid rope. The vibration isolation inner skeleton 24 is installed in the PU sheath 25 and the PU sheath 25 is filled with insulating oil 26. A plurality of hydrophones 30 arranged at intervals are installed in the vibration isolation inner skeleton 24. One end of the elastic rope is connected to the electrical connector 11 at one end of the proximal vibration isolation segment 10, and the other end of the elastic rope passes through a plurality of vibration isolation inner skeletons 24 and then is connected to the electrical connector 11 at the other end of the proximal vibration isolation segment 10. One end of the rigid rope is connected to the electrical connector 11 at one end of the multi-element oil-filled receiving array segment 12 (i.e., one end close to the proximal vibration isolation segment 10), and the other end of the rigid rope passes through a plurality of vibration isolation inner skeletons 24 and then is connected to the electrical connector 11 at the other end of the multi-element oil-filled receiving array segment 12 (i.e., one end close to the load-bearing cable vulcanized hydrophone receiving array segment 27). Since the arrangement of multiple array elements can be satisfied, it is necessary to arrange the wires in the PU sheath 25 .

[0035] The multi-element oil-filled receiving array is used when it is necessary to locate the target in depth. The number and array spacing of the hydrophones in the multi-element oil-filled receiving array can be determined according to the frequency requirements of target detection, but the maximum frequency does not exceed 5kHz. Kevlar ropes are used internally for load bearing, and polyester streamers of a certain width are woven on the surface. The hydrophones in the multi-element oil-filled array are connected to the central electronic warehouse through the proximal vibration isolation section by wires, and the control commands and hydrophone data are sent down and collected uplink. The end of the oil-filled array is connected to the watertight bearing cable by a connector. The surface of the bearing cable is connected to the hydrophone according to the set aperture spacing, and the hydrophone is vulcanized on the surface of the bearing cable to form a watertight array element. The control command and hydrophone data are transmitted through the wires in the bearing cable, and finally reach the central main control electronic warehouse after passing through the multi-element oil-filled array and the proximal vibration isolation section.

[0036] like Figure 5 As shown, the load-bearing cable vulcanized hydrophone receiving array segment 27 includes a load-bearing cable 14, a hydrophone vulcanized layer 15, a vulcanized hydrophone 16, a vulcanized load-bearing head 28 and a load-bearing connector 29; one end of the load-bearing cable 14 is connected to the electrical connector 11 at the multi-element oil-filled receiving array segment 12 through the vulcanized load-bearing head 28, a plurality of hydrophone vulcanized layers 15 are installed outside the load-bearing cable 14 at intervals along the axial direction of the load-bearing cable 14, each hydrophone vulcanized layer 15 is installed with a corresponding vulcanized hydrophone 16, and the other end of the load-bearing cable 14 is connected to a shackle 17 of the rotating isolation segment through the load-bearing connector 29.

[0037] The role of the load-bearing cable vulcanized hydrophone is to make up for the defect that the multi-element oil-filled receiving array segment cannot be made long. The length of the load-bearing cable 14 can reach a kilometer. It can be cut at any position on the surface of its watertight layer and connected to the hydrophone with a wire, and the vulcanized watertight layer is encapsulated on its outside. For the load-bearing cable vulcanized hydrophone receiving array segment receiving at one end, an electrical connector 11 is arranged at one end, and a load-bearing connector 29 is used at the other end, and a vulcanized load-bearing head 28 is made at the end of the electrical connector. The surface vulcanized hydrophone 16 needs to be electrically connected, and the external watertight vulcanized layer 15 is designed to be olive-shaped.

[0038] The rotating isolation section includes a shackle 17 and a rotating ring 18; both ends of the rotating ring 18 are respectively connected to a corresponding shackle 17, and the two shackles 17 are respectively connected to the load-bearing cable vulcanized hydrophone receiving array section 27 and the load-bearing connector 29 of the far-end vibration isolation section 19.

[0039] Polyester has a suitable toughness, and the polyester tape is 10-30mm wide and 200-400mm long. Figure 7As shown, several polyester belts are formed by leading out through oblique double-layer weaving at the proximal vibration isolation section 10, the multi-element oil-filled receiving array section 12, the load-bearing cable vulcanized hydrophone receiving array section 27 or the distal vibration isolation section 19. This weaving method can disperse the density of the streamers 13 on the entire weaving surface, so that the vertical array can still ensure good drifting performance during long-term and multi-frequency deployment in seawater, avoiding the problem of fine fibers being tangled into clumps.

[0040] In the working state, the main control electronic compartment is timed by the deck unit of the high-precision atomic clock, and the collection task list is issued through the debugging port, that is, the sampling rate, storage file format, and collection cycle are set. After the settings are completed, the main control electronic compartment enters sleep mode, and only the duty circuit and the high-precision atomic clock are powered. Before the task time arrives, the duty circuit wakes up the main control circuit and the collection storage module. The main control circuit controls the collection storage module to use the clock of the high-precision atomic clock for synchronous sound signal collection. After completing a collection cycle, each device re-enters sleep mode.

[0041] The large eddy simulation method (LES) was used to simulate the vortex shedding of the vertical array proposed in the present invention, and the calculation results showed that the center frequency of its low-frequency vibration result was around 9Hz. By weaving a fixed-width polyester streamer on the surface of the oil-filled array, the radiated sound generated by the sheath structure vibration of the PU sheath on the surface of the oil-filled array under the 9Hz fluid-solid coupling condition can be effectively reduced. Similarly, a fixed-width polyester streamer was woven at the end of the load-bearing cable, so that the vibration of the load-bearing cable near the vulcanized hydrophone was suppressed, reducing the flow-induced "pseudo-sound" on the surface of the hydrophone. In addition, the elastic vibration reduction and isolation section designed according to the cable tension can reduce the low-frequency vibration below 50Hz by more than 20dB, effectively ensuring the quality of the received sound signal.

[0042] The low-noise vertical array of streamers based on vertical vibration isolation mixed vortex crushing analysis of the present invention adopts load-bearing vertical vibration isolation sections and horizontal woven fixed-width polyester streamers technology, which greatly improves the quality of acoustic signal collection of hydrophones arranged arbitrarily in the full sea depth range of the equipment. The vertical vibration isolation capability of the present invention reaches more than 20dB below 50Hz, and the horizontal flow-induced noise suppression capability reaches more than 10dB. The volume of the main control electronic warehouse is small, and the array segment is relatively simple. It can be connected by simple connectors to form a vertical array covering a large range of sea depths, which is easy to deploy and recover on the deck.

[0043] In addition, it should be pointed out that the above embodiments are only used to illustrate the technical solution and implementation technology of the present invention and are not restrictive. Simple modifications, reduced use, equivalent replacement or modification based on the technical essence of the present invention cannot deviate from the technical solution and implementation technology of the present invention.

Claims

1. A low-noise streamer vertical array based on vertical vibration isolation mixing vortex breakup analysis, characterized in that: The invention comprises a main control electronic warehouse and two vertical mixing sections, wherein the two vertical mixing sections are symmetrically installed at the upper and lower ends of the main control electronic warehouse; along the direction away from the main control electronic warehouse, each of the vertical mixing sections comprises a proximal vibration isolation section (10), a multi-element oil-filled receiving array section (12), a load-bearing cable sulfurized hydrophone receiving array section (27), a rotation isolation section and a distal vibration isolation section (19) which are arranged in sequence; the proximal vibration isolation section (10) and the multi-element oil-filled receiving array section (12), and the multi-element oil-filled receiving array section (12) and the load-bearing cable sulfurized hydrophone receiving array section (27) are all connected via corresponding electrical connectors (11); and corresponding streamers (13) are arranged outside the proximal vibration isolation section (10), the multi-element oil-filled receiving array section (12), the load-bearing cable sulfurized hydrophone receiving array section (27) and the distal vibration isolation section (19).

2. A low-noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 1, characterized in that: The main control electronic warehouse comprises an outer frame (2), a glass microbead buoyancy shell (3), a pressure-resistant shell (4), an atomic clock (5), a main control module (6), a battery pack (7), an upper acquisition storage module (8), and a lower acquisition storage module (9); the pressure-resistant shell (4) is placed in the glass microbead buoyancy shell (3), the glass microbead buoyancy shell (3) is installed in the outer frame (2), the main control module (6), the atomic clock (5), the battery pack (7), the upper acquisition storage module (8), and the lower acquisition storage module (9) are all installed in the pressure-resistant shell (4), the main control module (6) is connected to the atomic clock (5), the upper acquisition storage module (8) and the lower acquisition storage module (9) are both connected to the main control module (6), the battery pack (7) is connected to the upper acquisition storage module (8), the lower acquisition storage module (9), and the main control module (6), and the main control module (6) is connected to the vertical mixing sections at the upper and lower ends via an interconnecting cable (1).

3. A low-noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 1, characterized in that: The proximal vibration isolation section (10) comprises a vibration isolation inner frame (24), a PU sheath (25), insulating oil (26), an elastic rope and a rigid rope. The vibration isolation inner frame (24) is installed in the PU sheath (25) and the PU sheath (25) is filled with insulating oil (26). One end of the elastic rope is connected to an electrical connector (11) at one end of the proximal vibration isolation section (10). The other end of the elastic rope passes through a plurality of vibration isolation inner frames (24) and is then connected to the electrical connector (11) at the other end of the proximal vibration isolation section (10). One end of the rigid rope is connected to the electrical connector (11) at one end of the proximal vibration isolation section (10). The other end of the rigid rope passes through a plurality of vibration isolation inner frames (24) and is then connected to the electrical connector (11) at the other end of the proximal vibration isolation section (10).

4. A low-noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 3, characterized in that: The elastic rope comprises an elastic nylon rope (22).

5. A low noise ribbon vertical array based on vertical vibration isolation mixing vortex breakup analysis according to claim 3, characterized in that: The rigid rope comprises a Kevlar rope (23).

6. A low noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 1, characterized in that: The load-bearing cable vulcanized hydrophone receiving array section (27) comprises a load-bearing cable (14), a hydrophone vulcanized layer (15), a vulcanized hydrophone (16), a vulcanized load-bearing head (28) and a load-bearing connector (29); one end of the load-bearing cable (14) is connected to an electrical connector (11) at a multi-element oil-filled receiving array section (12) via a vulcanized load-bearing head (28); a plurality of hydrophone vulcanized layers (15) are installed outside the load-bearing cable (14) at intervals along the axial direction of the load-bearing cable (14); a corresponding vulcanized hydrophone (16) is installed in each hydrophone vulcanized layer (15); and the other end of the load-bearing cable (14) is connected to a rotating isolation section via a load-bearing connector (29).

7. A low noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 1, characterized in that: The rotating isolation section comprises a shackle (17) and a rotating ring (18); the two ends of the rotating ring (18) are respectively connected to a corresponding shackle (17), and the two shackles (17) are respectively connected to the load-bearing cable vulcanized hydrophone receiving array section (27) and the far-end vibration isolation section (19).

8. A low noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 1, characterized in that: The streamer (13) is formed by a plurality of polyester belts which are braided in an oblique double layer at the proximal vibration isolation section (10), the multi-element oil-filled receiving array section (12), the load-bearing cable vulcanized hydrophone receiving array section (27) or the distal vibration isolation section (19) and then led out.

9. A low noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 2, characterized in that: The material of the outer frame (2) and the pressure-resistant shell (4) is titanium alloy.

10. A low noise ribbon vertical array based on vertical vibration isolation mixed vortex breakup analysis according to claim 1, characterized in that: The multi-element oil-filled receiving array segment (12) comprises a vibration isolation inner frame (24), a PU sheath (25), insulating oil (26), an elastic rope and a rigid rope; the vibration isolation inner frame (24) is installed in the PU sheath (25) and the PU sheath (25) is filled with insulating oil (26); a plurality of hydrophones (30) arranged at intervals are installed in the vibration isolation inner frame (24); one end of the elastic rope is connected to an electrical connector (11) at one end of the proximal vibration isolation segment (10); the other end of the elastic rope passes through a plurality of vibration isolation inner frames (24) and is then connected to an electrical connector (11) at the other end of the proximal vibration isolation segment (10); one end of the rigid rope is connected to an electrical connector (11) at one end of the multi-element oil-filled receiving array segment (12); the other end of the rigid rope passes through a plurality of vibration isolation inner frames (24) and is then connected to an electrical connector (11) at the other end of the multi-element oil-filled receiving array segment (12).

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