CN111521254B - Low-noise hydrophone element suitable for wave glider - Google Patents
Low-noise hydrophone element suitable for wave glider Download PDFInfo
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- CN111521254B CN111521254B CN202010291772.0A CN202010291772A CN111521254B CN 111521254 B CN111521254 B CN 111521254B CN 202010291772 A CN202010291772 A CN 202010291772A CN 111521254 B CN111521254 B CN 111521254B
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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Abstract
The invention discloses a low-noise hydrophone element suitable for a wave glider, belongs to the technical field of underwater sound receiving transducers, and aims to solve the problems that manual inspection of a transformer substation is performed with multiple blind spots and visual positioning is inaccurate. The invention comprises a bent disc hydrophone, a support ring, three suspension springs, an upper sound-transmitting flow-guiding positioning cover, a lower sound-transmitting flow-guiding positioning cover and a balance wing plate; the support ring is of a circular ring structure and is clamped in a circular hole in the balance wing plate, the bent disc hydrophone is of a cylindrical structure and is arranged in the center of the support ring, the far end of each suspension spring is arranged on the support ring, the near end of each suspension spring is arranged on the side surface of the bent disc hydrophone, the upper and lower sound-transmitting and flow-guiding positioning covers are of the same structure and are symmetrically arranged on the upper and lower sides of the circular hole in the balance wing plate, so that the bent disc hydrophone is arranged in a cavity of the upper and lower sound-transmitting and flow-guiding positioning covers, and the cavity is provided with an amplitude space for the bent disc hydrophone to vibrate. The invention is suitable for the wave glider.
Description
Technical Field
The invention relates to a low-noise hydrophone element suitable for a wave glider, and belongs to the technical field of underwater sound receiving transducers.
Background
The wave glider is a novel ocean unmanned aircraft which is emerged in the last decade. The energy-saving device can convert infinite wave energy in the ocean into self-advancing thrust through the gliding wing plate, so that the wave energy is converted into kinetic energy for advancing, and the energy-saving device is matched with a solar panel and a battery which are installed on a water surface floating body ship and does not need to provide extra power. The wave glider is an autonomous ocean observation platform and can continuously observe the ocean environment under different sea conditions. The method has the outstanding advantages of super-long endurance, autonomy, nobody, zero emission, small volume, economy and the like.
The wave glider has multiple and flexible sensor carrying capabilities. The method can be used for marine exploration of essential information such as hydrology, meteorology, acoustics, chemistry and the like.
The wave glider body comprises two parts: surface floating vessels and underwater tractors. The water surface floating body ship floats on the sea surface and has certain positive buoyancy; the underwater tractor is connected to the center of the bottom of the floating body ship through an umbilical cable of 6-8 meters and has certain negative buoyancy. The structure ensures that the umbilical cable is always in a straightened state on one hand, and avoids winding; on the other hand, the whole wave glider is wholly floating on the center and the center of gravity is below, so that the stability of the system for resisting wind and waves is improved. Because of the action of waves, the surface floating body ship and the underwater tractor are always in a motion state, and if the acoustic sensor is directly arranged on the surface floating body ship or the underwater tractor, a lot of noise close to the water surface and noise and interference caused by system vibration are brought. It is therefore possible to integrate the acoustic device into an underwater towed body which is connected below the underwater tractor by means of suitable damping structures and has a depth such that it is remote from the surface of the water and the underwater tractor, and to mount the acoustic sensors on the balance wings of the towed body.
After the underwater acoustic towed body is hung on the wave glider, certain flow resistance and flow noise can be generated due to the impact of sea current. Two adverse effects are involved: on one hand, the flow noise can directly influence the performance and the acting distance of the acoustic equipment; on the other hand, the wave glider can be provided with certain flow resistance load, and the maneuvering capability and the position control capability of the wave glider are influenced. Therefore, there is a need to reduce the effects of flow noise and flow resistance to some extent by structural optimization of the added hydrophone.
In summary, there is a need for a low flow noise and low flow resistance hydrophone module suitable for use in a wave glider that can be mounted on the balance wing plate of an underwater acoustic towed body to minimize the effects of flow noise and flow resistance.
Disclosure of Invention
The invention aims to solve the problem that the current hydrophone element additionally arranged on a balance wing plate of an underwater acoustic towed body has larger flow noise and flow resistance ratio, and provides a low-noise hydrophone element suitable for a wave glider.
The invention relates to a low-noise hydrophone element suitable for a wave glider, which comprises a bent disc hydrophone, a support ring, three suspension springs, an upper sound-transmitting and flow-guiding positioning cover, a lower sound-transmitting and flow-guiding positioning cover and a balance wing plate, wherein the bent disc hydrophone is fixed on the support ring;
the balance wing plate is provided with a round hole,
the support ring is in a circular structure and is clamped in the circular hole,
the bent disc hydrophone is of a cylindrical structure and is arranged in the center of the support ring,
the far hydrophone ends of the three suspension springs are arranged on the support ring, the near hydrophone ends of the three suspension springs are arranged on the side surface of the bent disc hydrophone,
the upper sound-transmitting flow-guiding positioning cover and the lower sound-transmitting flow-guiding positioning cover are identical in structure and are symmetrically arranged on the upper side and the lower side of the circular hole of the balance wing plate, so that the bent disc hydrophone is arranged in the cavity of the upper sound-transmitting flow-guiding positioning cover and the cavity of the lower sound-transmitting flow-guiding positioning cover, and the cavity of the upper sound-transmitting flow-guiding positioning cover and the cavity of the lower sound-transmitting flow-guiding positioning cover are provided with amplitude spaces for the bent disc hydrophone to vibrate.
Preferably, the support ring is provided with three suspension spring mounting holes, the three suspension spring mounting holes are uniformly distributed along the circumferential direction of the support ring, and the three suspension spring mounting holes are respectively provided with the far hydrophone ends of the three suspension springs.
Preferably, the high intermediate position of crooked disc hydrophone side is provided with three suspension spring installed part, and three suspension spring installed part is along the side circumference equipartition of crooked disc hydrophone, and three suspension spring installed part is relative with three suspension spring mounting hole respectively, installs three suspension spring's nearly hydrophone end on the three suspension spring installed part respectively.
Preferably, the support ring is further provided with three support ring positioning and mounting holes, the three support ring positioning and mounting holes are uniformly distributed along the circumferential direction of the support ring, the three support ring positioning and mounting holes and the three suspension spring mounting holes are arranged in a staggered mode with 60-degree included angles, and the support ring is fixedly mounted with the upper sound-transparent flow guide positioning cover and the lower sound-transparent flow guide positioning cover through the three support ring positioning and mounting holes.
Preferably, the upper sound-permeable flow-guide positioning cover comprises an upper positioning cover top cover, an upper incident flow surface, an upper positioning boss and an upper positioning cover outer edge, the upper positioning cover top cover is a circular plane, the upper positioning boss is of a circular structure, the diameter of the inner circle of the upper positioning boss is larger than that of the upper positioning cover top cover, the outer edge of the outer circle of the upper positioning boss is the upper positioning cover outer edge, the arc surface between the upper positioning cover outer edge and the upper positioning cover top cover is the upper incident flow surface, three upper flow-guide positioning cover mounting holes are uniformly distributed on the upper incident flow surface along the circumferential direction, the three upper flow-guide positioning cover mounting holes are respectively opposite to the three support ring positioning mounting holes, the three upper positioning boss mounting holes are uniformly distributed on the upper positioning boss along the circumferential direction, and the three upper positioning boss mounting holes are respectively opposite to the three support ring positioning mounting holes;
the lower sound-permeable flow guide positioning cover comprises a lower positioning cover top cover, a lower incident flow surface, a lower positioning boss and a lower positioning cover outer edge, the lower positioning cover top cover is a circular plane, the lower positioning boss is of a circular structure, the diameter of the inner circle of the lower positioning boss is larger than that of the lower positioning cover top cover, the outer side of the outer circle of the lower positioning boss is the lower positioning cover outer edge, the arc surface between the lower positioning cover outer edge and the lower positioning cover top cover is the lower incident flow surface, three lower flow guide positioning cover mounting holes are uniformly distributed on the lower incident flow surface along the circumferential direction, the three lower flow guide positioning cover mounting holes are respectively opposite to the three support ring positioning mounting holes, the three lower positioning boss mounting holes are uniformly distributed on the lower positioning boss along the circumferential direction, and the three lower positioning boss mounting holes are respectively opposite to the three support ring positioning mounting holes;
the upper sound-transmitting flow-guiding positioning cover, the support ring and the lower sound-transmitting flow-guiding positioning cover are fixedly installed through an upper positioning boss installation hole, a support ring positioning installation hole and a lower positioning boss installation hole;
the outer edge of the upper positioning cover is buckled on the upper side of the balance wing plate and is positioned outside the circular hole;
the outer edge of the lower positioning cover is buckled at the lower side of the balance wing plate and is positioned outside the circular hole.
Preferably, the upper incident flow surface and the lower incident flow surface respectively form included angles with the balance wing plate.
Preferably, the inner sides of the upper sound-transmitting and flow-guiding positioning cover and the lower sound-transmitting and flow-guiding positioning cover are respectively provided with three suspension spring grooves, and the three suspension springs are respectively arranged in the three suspension spring grooves.
Preferably, the inner side of the lower sound-transmitting and flow-guiding positioning cover is provided with an outlet groove, the outlet groove is positioned between any one of the lower positioning boss mounting holes and the adjacent suspension spring groove, and a lead of the bent disc hydrophone is mounted in the outlet groove.
The invention has the advantages that:
from the hydrodynamic point of view:
1. when the wave glider is used for carrying an underwater acoustic array, a bent disc type hydrophone element is used, the thickness direction of the bent disc type hydrophone element is used as a stream-facing surface, and a sound-transmitting guide cover structure is additionally arranged on the stream-facing surface. By reducing the incident flow area and additionally arranging the diversion structure, the influence of the flow resistance is reduced to a certain extent, and the influence of the underwater acoustic matrix on the position control and maneuvering capacity of the wave glider is reduced.
2. The sound-transmitting air guide sleeve is made of elastic materials, and a slotted matching structure is adopted by the sound-transmitting air guide sleeve and the installation wing plate, so that seamless connection can be realized after hydrophone elements are installed, and the damping coefficient is reduced more effectively.
From an acoustic perspective:
1. due to the requirement of the aperture of the underwater acoustic array, when the wave glider carries the underwater acoustic array, the hydrophone elements are usually installed at the edge of a balance wing plate of the wave glider. The invention uses a bent disc type hydrophone element, uses the thickness direction of the hydrophone element as a stream-facing surface, and adds a sound-transmitting dome structure on the stream-facing surface. The method does not affect the omnidirectional receiving of the hydrophone and does not reduce the receiving sensitivity, reduces the influence of flow noise to a certain extent, and is favorable for improving the performance of the underwater acoustic array.
2. Due to the driving mode of the wave glider, the elastic suspension vibration attenuation connecting structure is adopted inside the hydrophone element and the sound transmission guide cover, so that the vibration impact and noise of the traction force of the wave glider on an underwater acoustic array can be effectively reduced.
Drawings
FIG. 1 is an assembly drawing of parts of a low noise hydrophone element suitable for use in a wave glider in accordance with the invention;
FIG. 2 is a schematic view of the internal structure of the upper acoustically transparent fluid conducting locating cover of the present invention;
FIG. 3 is a schematic view of the external structure of the lower acoustically transparent pod of the present invention;
FIG. 4 is a cross-sectional view of an assembled low noise hydrophone module suitable for use in a wave glider, in accordance with the invention;
FIG. 5 is a bottom view of the upper acoustically transparent pod of the present invention;
FIG. 6 is a view from the A-A direction of FIG. 5;
FIG. 7 is a schematic view of the assembly of a curved disk hydrophone of the present invention with a support ring via suspension springs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The first embodiment is as follows: the low-noise hydrophone unit suitable for the wave glider in the embodiment is described below with reference to fig. 1 to 7, and comprises a curved disc hydrophone 1, a support ring 2, three suspension springs 3, an upper sound-transmitting and guiding positioning cover 4a, a lower sound-transmitting and guiding positioning cover 4b and a balance wing plate 5;
the balance wing plate 5 is provided with a round hole,
the support ring 2 is in a circular structure, the support ring 2 is clamped in the circular hole,
the bent disc hydrophone 1 is of a cylindrical structure and is arranged at the central position in the support ring 2,
the far hydrophone ends of the three suspension springs 3 are arranged on the support ring 2, the near hydrophone ends of the three suspension springs 3 are arranged on the side surface of the bent disc hydrophone 1,
the upper sound-transmitting and flow-guiding positioning cover 4a and the lower sound-transmitting and flow-guiding positioning cover 4b are identical in structure and symmetrically arranged on the upper side and the lower side of the circular hole of the balance wing plate 5, so that the bent disc hydrophone 1 is arranged in the cavities of the upper sound-transmitting and flow-guiding positioning cover 4a and the lower sound-transmitting and flow-guiding positioning cover 4b, and the cavities of the upper sound-transmitting and flow-guiding positioning cover 4a and the lower sound-transmitting and flow-guiding positioning cover 4b are provided with amplitude spaces for the bent disc hydrophone 1 to vibrate.
In this embodiment, the diameter of the outer circle of the support ring 2 is approximately equal to the diameter of the circular hole of the balance wing plate 5, so that the support ring 2 can be clamped in the circular hole of the balance wing plate 5 and is not easy to fall off.
In this embodiment, the inner sides of the upper acoustically transparent and baffling locating cover 4a and the lower acoustically transparent and baffling locating cover 4b reserve a sufficient amplitude space for the vibration which may occur to the curved disc hydrophone 1, so that the noise generated by collision between the acoustically transparent and baffling locating cover and the curved disc hydrophone 1 is avoided in use. When the low-noise hydrophone element is placed under water, the inner cavities of the upper sound-transmitting and flow-guiding positioning cover 4a and the lower sound-transmitting and flow-guiding positioning cover 4b are filled with water.
In this embodiment, the suspension spring 3 is always in a stretched state, and in order to avoid noise generated by the relative friction between the suspension point and the suspension spring 3 in the using process, the suspension spring can be bonded into a whole by using epoxy resin glue, or a flexible sheath is additionally arranged on the suspension point of the suspension spring 3.
Furthermore, three suspension spring mounting holes 2-1 are formed in the support ring 2, the three suspension spring mounting holes 2-1 are uniformly distributed along the circumferential direction of the support ring 2, and the three suspension spring mounting holes 2-1 are respectively provided with the far hydrophone ends of the three suspension springs 3.
Furthermore, three suspension spring mounting pieces 1-1 are arranged in the middle of the height of the side face of the bent disc hydrophone 1, the three suspension spring mounting pieces 1-1 are uniformly distributed along the circumferential direction of the side face of the bent disc hydrophone 1, the three suspension spring mounting pieces 1-1 are respectively opposite to the three suspension spring mounting holes 2-1, and the three suspension spring mounting pieces 1-1 are respectively provided with a hydrophone near end of each of the three suspension springs 3.
In the embodiment, the three suspension spring mounting parts 1-1 are embedded parts which are filled and sealed, and are made of titanium alloy or stainless steel.
Furthermore, the support ring 2 is also provided with three support ring positioning and mounting holes 2-2, the three support ring positioning and mounting holes 2-2 are uniformly distributed along the circumferential direction of the support ring 2, the three support ring positioning and mounting holes 2-2 are respectively arranged with the three suspension spring mounting holes 2-1 in a 60-degree included angle dislocation mode, and the support ring 2 is fixedly mounted with the upper sound-transmitting diversion positioning cover 4a and the lower sound-transmitting diversion positioning cover 4b through the three support ring positioning and mounting holes 2-2.
In the embodiment, the three support ring positioning mounting holes 2-2 and the three suspension spring mounting holes 2-1 are arranged in a staggered mode at included angles of 60 degrees respectively, so that interference between the three support ring positioning mounting holes and the three suspension spring mounting holes is avoided.
Further, the upper sound-transmitting flow-guiding positioning cover 4a comprises an upper positioning cover top cover 4a-6, an upper incident flow surface 4a-7, an upper positioning boss 4a-2 and an upper positioning cover outer edge 4a-4, the upper positioning cover top cover 4a-6 is a circular plane, the upper positioning boss 4a-2 is of a circular structure, the diameter of the inner circle of the upper positioning boss 4a-2 is larger than that of the upper positioning cover top cover 4a-6, the outer side of the outer circle of the upper positioning boss 4a-2 is the upper positioning cover outer edge 4a-4, the circular arc surface between the upper positioning cover outer edge 4a-4 and the upper positioning cover top cover 4a-6 is the upper incident flow surface 4a-7, three upper flow-guiding positioning cover mounting holes 4a-1 are uniformly distributed on the upper incident flow surface 4a-7 along the circumferential direction, the three upper flow-guiding positioning cover mounting holes 4a-1 are respectively opposite to the three support ring positioning mounting holes 2-2, three upper positioning boss mounting holes 4a-3 are uniformly distributed on the upper positioning boss 4a-2 along the circumferential direction, and the three upper positioning boss mounting holes 4a-3 are respectively opposite to the three support ring positioning mounting holes 2-2;
the lower sound-permeable flow-guide positioning cover 4b comprises a lower positioning cover top cover 4b-6, a lower incident flow surface 4b-7, a lower positioning boss 4b-2 and a lower positioning cover outer edge 4b-4, the lower positioning cover top cover 4b-6 is a circular plane, the lower positioning boss 4b-2 is of a circular ring structure, the diameter of the inner circle of the lower positioning boss 4b-2 is larger than that of the lower positioning cover top cover 4b-6, the outer side of the excircle of the lower positioning boss 4b-2 is the lower positioning cover outer edge 4b-4, the arc surface between the lower positioning cover outer edge 4b-4 and the lower positioning cover top cover 4b-6 is the lower incident flow surface 4b-7, three lower flow-guide positioning cover mounting holes 4b-1 are uniformly distributed on the lower incident flow surface 4b-7 along the circumferential direction, the three lower flow-guide positioning cover mounting holes 4b-1 are respectively opposite to the three support ring positioning mounting holes 2-2, three lower positioning boss mounting holes 4b-3 are uniformly distributed on the lower positioning boss 4b-2 along the circumferential direction, and the three lower positioning boss mounting holes 4b-3 are respectively opposite to the three support ring positioning mounting holes 2-2;
the upper sound-transmitting flow-guiding positioning cover 4a, the support ring 2 and the lower sound-transmitting flow-guiding positioning cover 4b are fixedly installed through an upper positioning boss installation hole 4a-3, a support ring positioning installation hole 2-2 and a lower positioning boss installation hole 4 b-3;
the outer edge 4a-4 of the upper positioning cover is buckled on the upper side of the balance wing plate 5 and is positioned outside the circular hole;
the outer edge 4b-4 of the lower positioning cover is buckled at the lower side of the balance wing plate 5 and is positioned outside the circular hole.
In the present embodiment, the thickness of the support ring 2 is subtracted from the thickness of the balance wing plate 5, and the height of the upper positioning boss 4a-2 is slightly less than half of the above difference.
In the embodiment, the upper diversion positioning cover mounting hole 4a-1 and the upper positioning boss mounting hole 4a-3 are communicated integrated holes; the lower diversion positioning cover mounting hole 4b-1 and the lower positioning boss mounting hole 4b-3 are communicated integrated holes.
Still further, the upper incident flow surface 4a-7 and the lower incident flow surface 4b-7 respectively form included angles with the balance wing plate 5.
In this embodiment, the included angle can reduce flow noise and flow resistance caused by flow impact.
Furthermore, the inner sides of the upper sound-transmitting and flow-guiding positioning cover 4a and the lower sound-transmitting and flow-guiding positioning cover 4b are respectively provided with three suspension spring grooves 4-1, and the three suspension springs 3 are respectively arranged in the three suspension spring grooves 4-1.
In this embodiment, three suspension spring grooves 4-1 are used to prevent the suspension spring 3 from interfering and colliding with the acoustically transparent airflow guiding positioning cover.
Furthermore, an outlet groove 4b-5 is formed in the inner side of the lower sound-transmitting and flow-guiding positioning cover 4b, the outlet groove 4b-5 is located between any one of the lower positioning boss mounting holes 4b-3 and the adjacent suspension spring groove 4-1, and a lead of the bent disc hydrophone 1 is mounted in the outlet groove 4 b-5.
In the embodiment, the wire outlet groove 4b-5 is positioned between any one of the lower positioning boss mounting holes 4b-3 and the adjacent suspension spring groove 4-1, so that the interference between the lead of the bent disc hydrophone 1 and the suspension spring 3 and the bolts in the lower positioning boss mounting holes 4b-3 can be avoided.
Still further, the bending disc hydrophone 1 is a high-sensitivity hydrophone, the working depth is not less than 300 m, the thickness is not more than 30mm, and the ratio of the diameter to the thickness is not less than 4: 1.
In the invention, the upper sound-transmitting and flow-guiding positioning cover 4a and the lower sound-transmitting and flow-guiding positioning cover 4b are made of elastic materials with acoustic impedance close to that of water, the materials must be seawater corrosion resistant and have certain mechanical strength, and sound-transmitting polyurethane, nylon, ABS plastic or polyformaldehyde POM and the like can be selected according to the use requirements. If sound-transmitting polyurethane is selected for encapsulation molding, embedded parts with certain installation strength are required to be placed at the upper flow guide positioning cover installation hole 4a-1 and the lower flow guide positioning cover installation hole 4b-1, and the embedded parts are made of seawater corrosion resistant titanium alloy or stainless steel materials, so that the deformation and the mechanical strength of the fastened fastening screws are guaranteed.
In the invention, the suspension spring 3 is made of seawater corrosion resistant material, has certain mechanical strength, and can be made of titanium alloy, stainless steel or rubber bands according to requirements.
In the invention, the material of the support ring 2 must be seawater corrosion resistant material and has certain mechanical strength, and titanium alloy, stainless steel or carbon fiber, glass fiber reinforced plastic, polyformaldehyde POM, nylon, ABS plastic and the like can be selected according to requirements.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (9)
1. The low-noise hydrophone element suitable for the wave glider is characterized by comprising a bent disc hydrophone (1), a support ring (2), three suspension springs (3), an upper sound-transmitting and flow-guiding positioning cover (4a), a lower sound-transmitting and flow-guiding positioning cover (4b) and a balance wing plate (5);
the balance wing plate (5) is provided with a round hole,
the support ring (2) is of a circular structure, the support ring (2) is clamped in the circular hole,
the bent disc hydrophone (1) is of a cylindrical structure and is arranged at the central position in the support ring (2),
the far hydrophone ends of the three suspension springs (3) are arranged on the support ring (2), the near hydrophone ends of the three suspension springs (3) are arranged on the side surface of the bent disc hydrophone (1), three suspension spring mounting pieces (1-1) are arranged at the middle position of the height of the side surface of the bent disc hydrophone (1), the three suspension spring mounting pieces (1-1) are circumferentially and uniformly distributed along the side surface of the bent disc hydrophone (1),
the upper sound-transmitting flow-guiding positioning cover (4a) and the lower sound-transmitting flow-guiding positioning cover (4b) are identical in structure and are symmetrically arranged on the upper side and the lower side of the circular hole of the balance wing plate (5), so that the bent disc hydrophone (1) is arranged in the cavities of the upper sound-transmitting flow-guiding positioning cover (4a) and the lower sound-transmitting flow-guiding positioning cover (4b), and the cavities of the upper sound-transmitting flow-guiding positioning cover (4a) and the lower sound-transmitting flow-guiding positioning cover (4b) are provided with amplitude spaces in which the bent disc hydrophone (1) vibrates.
2. The hydrophone module suitable for a wave glider of claim 1, wherein the support ring (2) is provided with three suspension spring mounting holes (2-1), the three suspension spring mounting holes (2-1) are uniformly distributed along the circumferential direction of the support ring (2), and the three suspension spring mounting holes (2-1) are respectively provided with the far hydrophone ends of the three suspension springs (3).
3. The hydrophone unit of claim 2, wherein three suspension spring mounts (1-1) are located opposite the three suspension spring mounting holes (2-1), respectively, and wherein the three suspension spring mounts (1-1) are provided with hydrophone-proximal ends of the three suspension springs (3), respectively.
4. The hydrophone module suitable for the wave glider as claimed in claim 3, wherein the support ring (2) further comprises three support ring positioning and mounting holes (2-2), the three support ring positioning and mounting holes (2-2) are uniformly distributed along the circumferential direction of the support ring (2), the three support ring positioning and mounting holes (2-2) are respectively arranged with the three suspension spring mounting holes (2-1) in a staggered manner with an included angle of 60 degrees, and the support ring (2) is fixedly mounted with the upper sound-transparent flow-guiding positioning cover (4a) and the lower sound-transparent flow-guiding positioning cover (4b) through the three support ring positioning and mounting holes (2-2).
5. The low noise hydrophone cell for a wave glider of claim 4,
the upper sound-transmitting flow-guiding positioning cover (4a) comprises an upper positioning cover top cover (4a-6), an upper incident flow surface (4a-7), an upper positioning boss (4a-2) and an upper positioning cover outer edge (4a-4), the upper positioning cover top cover (4a-6) is a circular plane, the upper positioning boss (4a-2) is of a circular ring structure, the diameter of the inner circle of the upper positioning boss (4a-2) is larger than that of the upper positioning cover top cover (4a-6), the outer side of the outer circle of the upper positioning boss (4a-2) is the upper positioning cover outer edge (4a-4), the arc surface between the upper positioning cover outer edge (4a-4) and the upper positioning cover top cover (4a-6) is the upper incident flow surface (4a-7), three upper flow-guiding positioning cover mounting holes (4a-1) are uniformly distributed on the upper flow surface (4a-7) along the circumferential direction, the three upper guide flow positioning cover mounting holes (4a-1) are respectively opposite to the three support ring positioning mounting holes (2-2), three upper positioning boss mounting holes (4a-3) are uniformly distributed on the upper positioning boss (4a-2) along the circumferential direction, and the three upper positioning boss mounting holes (4a-3) are respectively opposite to the three support ring positioning mounting holes (2-2);
the lower sound-transmitting flow-guiding positioning cover (4b) comprises a lower positioning cover top cover (4b-6), a lower incident flow surface (4b-7), a lower positioning boss (4b-2) and a lower positioning cover outer edge (4b-4), the lower positioning cover top cover (4b-6) is a circular plane, the lower positioning boss (4b-2) is of a circular ring structure, the diameter of the inner circle of the lower positioning boss (4b-2) is larger than that of the lower positioning cover top cover (4b-6), the outer side of the outer circle of the lower positioning boss (4b-2) is the lower positioning cover outer edge (4b-4), the arc surface between the lower positioning cover outer edge (4b-4) and the lower positioning cover top cover (4b-6) is the lower incident flow surface (4b-7), three lower flow-guiding positioning cover mounting holes (4b-1) are uniformly distributed on the lower incident flow surface (4b-7) along the circumferential direction, the three lower guide flow positioning cover mounting holes (4b-1) are respectively opposite to the three support ring positioning mounting holes (2-2), three lower positioning boss mounting holes (4b-3) are uniformly distributed on the lower positioning boss (4b-2) along the circumferential direction, and the three lower positioning boss mounting holes (4b-3) are respectively opposite to the three support ring positioning mounting holes (2-2);
the upper sound-transmitting flow-guiding positioning cover (4a), the support ring (2) and the lower sound-transmitting flow-guiding positioning cover (4b) are fixedly installed through an upper positioning boss installation hole (4a-3), a support ring positioning installation hole (2-2) and a lower positioning boss installation hole (4 b-3);
the outer edge (4a-4) of the upper positioning cover is buckled on the upper side of the balance wing plate (5) and is positioned outside the circular hole;
the outer edge (4b-4) of the lower positioning cover is buckled at the lower side of the balance wing plate (5) and is positioned outside the circular hole.
6. The hydrophone unit for a wave glider according to claim 5, wherein the upper (4a-7) and lower (4b-7) incident flow surfaces are each angled with respect to the balance wing (5).
7. The hydrophone unit suitable for wave gliders according to claim 6, wherein the inner sides of the upper and lower acoustically transparent fairings (4a, 4b) are provided with three suspension spring grooves (4-1), respectively, and the three suspension springs (3) are placed in the three suspension spring grooves (4-1), respectively.
8. The hydrophone element suitable for a wave glider of claim 5, 6 or 7, wherein the lower acoustically transparent conducting locating dome (4b) is provided at its inner side with an outlet groove (4b-5), the outlet groove (4b-5) is located between any one of the lower locating boss mounting holes (4b-3) and the adjacent suspension spring groove (4-1), and the lead wire of the curved disc hydrophone (1) is mounted in the outlet groove (4 b-5).
9. The low-noise hydrophone element suitable for a wave glider according to claim 1, wherein the curved-disc hydrophone (1) is a high-sensitivity hydrophone, having a working depth of not less than 300 m, a thickness of not more than 30mm, and a diameter-to-thickness ratio of not less than 4: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291772.0A CN111521254B (en) | 2020-04-14 | 2020-04-14 | Low-noise hydrophone element suitable for wave glider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010291772.0A CN111521254B (en) | 2020-04-14 | 2020-04-14 | Low-noise hydrophone element suitable for wave glider |
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| GB1234437A (en) * | 1967-10-10 | 1971-06-03 | ||
| US4974213A (en) * | 1988-12-16 | 1990-11-27 | Siwecki Thomas L | Passive active underwater sound detection apparatus |
| CN1776380A (en) * | 2005-12-08 | 2006-05-24 | 哈尔滨工程大学 | Capacitive coseismic vector hydrophone and its process |
| 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 |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1234437A (en) * | 1967-10-10 | 1971-06-03 | ||
| US4974213A (en) * | 1988-12-16 | 1990-11-27 | Siwecki Thomas L | Passive active underwater sound detection apparatus |
| CN1776380A (en) * | 2005-12-08 | 2006-05-24 | 哈尔滨工程大学 | Capacitive coseismic vector hydrophone and its process |
| 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 |
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