CN217442681U - Spherical hydrophone - Google Patents
Spherical hydrophone Download PDFInfo
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- CN217442681U CN217442681U CN202220078404.2U CN202220078404U CN217442681U CN 217442681 U CN217442681 U CN 217442681U CN 202220078404 U CN202220078404 U CN 202220078404U CN 217442681 U CN217442681 U CN 217442681U
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Abstract
The utility model provides a ball-type hydrophone, include: the piezoelectric ceramic ball comprises a piezoelectric ceramic ball, a pressure-bearing device and a transmission cable, wherein a first rubber layer is coated on the outer surface of the piezoelectric ceramic ball, a shielding net is coated on the outer surface of the first rubber layer, and the piezoelectric ceramic ball is provided with a leading-out front end. The pressure-bearing device is positioned on one side of the leading-out front end and connected with the piezoelectric ceramic ball, the pressure-bearing device is provided with a hollow inner cavity, and one end of the transmission cable extends into the hollow inner cavity and is connected with a positive lead and a negative lead which are led out from the leading-out front end. The outer surfaces of the shielding net, the pressure-bearing device and the part of the cable segment of the transmission cable, which is close to the pressure-bearing device, are coated with second rubber layers. According to the utility model discloses ball-type hydrophone through setting up the pressure-bearing device, has improved ball-type hydrophone inner structure's stability, yield and resistant hydrostatic pressure ability. Through setting up the shielding net, can improve the interference killing feature of ball-type hydrophone, utilize the rubber layer parcel piezoceramics ball, improved the life of ball-type hydrophone.
Description
Technical Field
The utility model relates to a hydrophone technical field especially relates to a ball-type hydrophone.
Background
The underwater acoustic transducer is a transducer for converting an acoustic signal into an electrical signal, and is a hydrophone which is generally used for receiving the acoustic signal in water, is widely applied to underwater communication, detection, target positioning, tracking and the like, and plays a vital role in an underwater acoustic technology. The underwater acoustic transducer is used in seawater for a long time, is easily corroded by seawater and needs to be subjected to watertight packaging; and a certain hydrostatic pressure resistance is required according to the use environment, so that structural reinforcement is required. Traditional underwater acoustic transducer adopts the form that polyurethane fills to seal the transduction unit, fills the mould through the design, arranges underwater acoustic transducer's transduction unit and cable in the mould, carries out segmentation embedment or whole embedment with the colloid.
The traditional hydrophone is manufactured in a filling sealing mode, the transduction unit is required to be placed in a mold after being connected with a cable, and glue is filled through a glue injection port in the mold. Because the glue injection port is narrow, bubbles are easy to appear on the surface of the transduction unit, and the acoustic performance of the hydrophone is affected; and the pressure resistance is poor when bubbles exist. Meanwhile, the traditional encapsulation mode generally adopts materials such as pouring polyurethane, epoxy resin and the like for sealing, and the materials have poor corrosion resistance in seawater and influence the service life of the underwater acoustic transducer. Therefore, the traditional polyurethane pouring mode is not suitable for the occasions of long-time seawater soaking.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is how to improve hydrophone's sealing performance, acoustic performance and life, the utility model provides a ball-type hydrophone.
According to the utility model discloses ball-type hydrophone, include:
the piezoelectric ceramic ball comprises a piezoelectric ceramic ball body, a first rubber layer and a shielding net, wherein the outer surface of the piezoelectric ceramic ball body is coated with the first rubber layer, and the outer surface of the first rubber layer is coated with the shielding net;
the pressure-bearing device is positioned on one side of the leading-out front end and is connected with the piezoelectric ceramic balls, and the pressure-bearing device is provided with a hollow inner cavity;
one end of the transmission cable extends into the hollow inner cavity and is connected with a positive lead and a negative lead which are led out from the leading-out front end;
the outer surfaces of the shielding net, the pressure-bearing device and the part of the cable segment of the transmission cable, which is close to the pressure-bearing device, are coated with second rubber layers.
According to the utility model discloses ball-type hydrophone through setting up the pressure-bearing device, has improved ball-type hydrophone inner structure's stability to improved ball-type hydrophone yield, moreover, can improve the resistant hydrostatic pressure ability of ball-type hydrophone. Through setting up the shielding net, can improve the interference killing feature of ball-type hydrophone, utilize first rubber layer and second rubber layer parcel piezoceramics ball, improved the life of ball-type hydrophone in the sea water. Therefore, the utility model provides high spherical hydrophone's interference killing feature and resistant hydrostatic pressure ability have also improved yield, watertight characteristic and the life of equipment simultaneously.
According to some embodiments of the present invention, the leading-out front end has a lead device, the piezoelectric ceramic ball the positive and negative electrode leads are led out from the lead device.
In some embodiments of the present invention, the wire guiding device is a hollow screw-like structure.
According to some embodiments of the present invention, the pressure-bearing device with the piezoceramic ball through with lead wire device complex reinforcement nut fixed connection.
In some embodiments of the present invention, the pressure-bearing device includes: the bearing shell comprises a first bearing shell and a second bearing shell, wherein the first bearing shell and the second bearing shell are connected through a fastener.
According to the utility model discloses a some embodiments, be equipped with the intercommunication on the periphery wall of pressure-bearing device the hole is glued with excessive hole to the notes of cavity inner chamber.
In some embodiments of the present invention, the spherical hydrophone further comprises:
and the insulating device is positioned in the hollow inner cavity and provided with a wiring groove, and the inner core of the transmission cable is connected with the positive and negative leads in the wiring groove in a welding manner.
According to some embodiments of the invention, the piezoelectric ceramic ball comprises a first ball shell and a second ball shell that are adhesively connected.
In some embodiments of the present invention, the shielding wire of the transmission cable passes through the pressure-bearing device and is connected to the shielding net.
According to some embodiments of the invention, the peripheral wall of the pressure-bearing device has a positioning boss.
Compared with the traditional hydrophone manufacturing, the spherical hydrophone designed by the utility model adopts the chloroprene rubber material with better corrosion resistance to carry out the fractional vulcanization on the hydrophone, thereby improving the yield and the corrosion resistance of the hydrophone and solving the defects existing in the traditional encapsulation mode; the shielding net is covered between two times of vulcanization, so that the anti-interference capability of the hydrophone is improved; the built-in pressure-bearing device greatly improves the hydrostatic pressure resistance of the equipment.
Drawings
Fig. 1 is a schematic partial structural view of a spherical hydrophone according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional structural view of a spherical hydrophone according to an embodiment of the invention;
fig. 3 is a schematic structural view of a first spherical shell of a piezoelectric ceramic ball of a spherical hydrophone in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural view of a second spherical shell of a piezoelectric ceramic ball of a spherical hydrophone in accordance with an embodiment of the invention;
fig. 5 is a schematic structural diagram of a piezoelectric ceramic ball of a ball-type hydrophone according to an embodiment of the invention;
fig. 6 is a schematic diagram of a manufacturing process of a spherical hydrophone according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a spherical hydrophone according to an embodiment of the present invention before secondary vulcanization;
fig. 8 is a schematic structural diagram of a spherical hydrophone after post-cure vulcanization according to an embodiment of the present invention.
Reference numerals:
a ball-type hydrophone 100 is disclosed,
piezoelectric ceramic ball 10, positive and negative electrode leads 101, leading-out front end 110, lead wire device 111, first rubber layer 120, shielding net 130, first ball shell 141, second ball shell 142,
the bearing device 20, the positioning boss 230, the hollow cavity 240, the fastener 250, the glue injection hole 261, the glue overflow hole 262,
the transmission cable 30 is connected to the outside of the housing,
the insulating means (40) is provided with,
the second rubber layer (50) is,
the nut 60 is reinforced.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.
To prior art defect, the utility model aims at providing a ball-type hydrophone of corrosion-resistant, interference killing feature reinforce and resistant high hydrostatic pressure.
As shown in fig. 1 and 2, a spherical hydrophone 100 according to an embodiment of the present invention includes: piezoelectric ceramic balls 10, a pressure bearing device 20 and a transmission cable 30.
As shown in fig. 2, the outer surface of the piezoelectric ceramic ball 10 is covered with a first rubber layer 120, the outer surface of the first rubber layer 120 is covered with a shielding net 130, and the piezoelectric ceramic ball 10 has a leading-out front end 110;
the pressure-bearing device 20 is positioned at one side of the leading-out front end 110 and is connected with the piezoelectric ceramic ball 10, and the pressure-bearing device 20 is provided with a hollow inner cavity 240;
one end of the transmission cable 30 extends into the hollow inner cavity 240 and is connected with the positive and negative lead wires 101 led out from the leading-out front end 110;
as shown in fig. 8, the outer surfaces of the shielding mesh 130, the pressure-bearing device 20 and the transmission cable 30 close to the partial cable segment of the pressure-bearing device 20 are all covered with the second rubber layer 50.
According to the utility model discloses ball-type hydrophone 100 through setting up pressure-bearing device 20, has improved the stability of ball-type hydrophone 100 inner structure to improved ball-type hydrophone 100 yield, moreover, can improve ball-type hydrophone 100 resistant hydrostatic pressure ability. The shielding net 130 is arranged, so that the anti-interference capability of the spherical hydrophone 100 can be improved, and the piezoelectric ceramic ball 10 is wrapped by the first rubber layer 120 and the second rubber layer 50, so that the service life of the spherical hydrophone 100 in seawater is prolonged. Therefore, the utility model provides high ball-type hydrophone 100's interference killing feature and resistant hydrostatic pressure ability have also improved yield, watertight characteristic and the life of equipment simultaneously.
According to some embodiments of the present invention, as shown in fig. 2, the leading end 110 has a lead device 111, and the positive and negative leads 101 of the piezoelectric ceramic ball 10 are led out from the lead device 111.
In some embodiments of the present invention, as shown in fig. 2, the lead wire device 111 is a hollow screw-like structure. The lead means 111 may be a piece of non-metallic insulating material, such as: glass fiber epoxy, alumina, nylon and polyether. Therefore, the processing and manufacturing of the lead device 111 are facilitated, and the lead device 111 can have good insulating performance.
According to some embodiments of the present invention, as shown in fig. 2, the pressure-bearing device 20 and the piezoelectric ceramic balls 10 are fixedly connected by a reinforcing nut 60 engaged with the lead device 111.
In some embodiments of the present invention, as shown in fig. 1 and 2, the pressure-bearing device 20 includes: the first pressure-bearing shell and the second pressure-bearing shell are connected through a fastener 250. The pressure bearing device 20 may be made of high-strength metal, such as: brass, titanium alloy, stainless steel, thereby improving the structural strength and the water pressure resistance of the spherical hydrophone 100.
According to some embodiments of the present invention, as shown in fig. 1, the peripheral wall of the pressure-bearing device 20 is provided with a glue injection hole 261 and a glue overflow hole 262 communicating with the hollow cavity 240. Thus, epoxy glue can be injected into the interior of the pressure bearing device 20 through the glue injection hole 261 to cure the internal units of the pressure bearing device 20. Furthermore, the epoxy glue can be overflowed from the glue overflow hole 262 to determine that the interior of the pressure-bearing device 20 is filled with the epoxy glue. As shown in fig. 1, a plurality of glue injection holes 261 and glue overflow holes 262 may be formed at intervals on the outer circumferential wall of the pressure-bearing device 20 to improve the glue injection efficiency.
In some embodiments of the present invention, as shown in fig. 2, the spherical hydrophone 100 further comprises: and the insulating device 40 is positioned in the hollow inner cavity 240, the insulating device 40 is provided with a wiring groove, and the inner core of the transmission cable 30 is connected with the positive and negative electrode leads 101 in the wiring groove in a welding manner. Therefore, the insulating device 40 can play the role of insulating and protecting the cable inner core and the positive and negative electrode leads 101.
According to some embodiments of the present invention, as shown in fig. 3-5, the piezoceramic ball 10 includes a first ball shell 141 and a second ball shell 142 that are adhesively connected. The positive and negative leads 101 can be led out from the second spherical shell 142 through the lead device 111 from the inside of the piezoelectric ceramic ball 10, and rubber pads are used on the inner and outer surfaces of the first spherical shell 141 and the second spherical shell 142 for insulation and shock absorption coupling treatment. In the bonding process, a proper amount of adhesive is applied to the cut edges of the first spherical shell 141 and the second spherical shell 142, and then a certain acting force is applied, and the piezoelectric ceramic balls 10 are allowed to stand until the piezoelectric ceramic balls are bonded.
Before the first spherical shell 141 and the second spherical shell 142 are bonded, the positive and negative poles of the piezoelectric ceramic ball 10 need to be led out through the lead device 111 or other hollow screw-shaped devices.
In some embodiments of the present invention, as shown in fig. 2, the shielding wires of the transmission cable 30 are connected to the shielding mesh 130 through the pressure-bearing device 20. Therefore, the anti-interference capability of the spherical hydrophone 100 can be improved. The shielding net 130 may be a braided copper net.
According to some embodiments of the present invention, as shown in fig. 1 and 2, the outer circumferential wall of the pressure bearing device 20 has a positioning boss 230. The positioning protrusion 230 can play a positioning role in secondary vulcanization, and the positioning protrusion 230 determines the positioning of the front end of the spherical hydrophone 100 and the pressure-bearing device 20 during secondary vulcanization, so that the uniform distribution of rubber in the vulcanization process is promoted, and the acoustic performance of the finished spherical hydrophone 100 is ensured.
The spherical hydrophone 100 according to the present invention is described in detail below with reference to the accompanying drawings. It is to be understood that the following description is only exemplary in nature and should not be taken as a specific limitation of the invention.
As shown in fig. 1 and 2, the ball-type hydrophone 100 includes: piezoelectric ceramic balls 10(PZT4), a shielding net 130, a lead wire device 111, a pressure bearing device 20, an insulating device 40 and a transmission cable 30.
As shown in fig. 3 to 5, the piezoelectric ceramic ball 10 includes a first ball shell 141 and a second ball shell 142, and the shielding net 130 is a woven mesh-shaped copper net.
The lead device 111 is a hollow screw-shaped structure, and the material thereof is generally an insulating non-metallic material (e.g., glass fiber epoxy, alumina, nylon, polyether).
The pressure-bearing device 20 is made of high-strength metal (such as brass, titanium alloy and stainless steel), the inside of the pressure-bearing device is threaded, the positive electrode and the negative electrode inside the piezoelectric ceramic ball 10 led out by the lead device 111 are welded with the signal core wire of the transmission cable 30, and the shielding wire of the transmission cable 30 is connected with the shielding copper mesh through the pressure-bearing device 20.
The insulation device 40 is arranged inside the pressure-bearing device 20 to protect the welding spots and isolate and insulate the pressure-bearing device 20 from the signal core wire.
The transmission cable 30 is connected with the positive and negative electrodes of the piezoelectric ceramic ball 10 to lead out signals and transmit the signals.
As shown in fig. 6, the manufacturing process of the spherical hydrophone 100 mainly includes: ceramic bonding, primary vulcanization, structural member assembly and secondary vulcanization.
According to the sequence, firstly, the piezoelectric ceramic balls 10 are bonded, secondly, primary vulcanization is carried out, then, the structural part assembly is carried out, and finally, secondary vulcanization molding is carried out.
The piezoelectric ceramic balls 10 are bonded as shown in fig. 3 to 5. The process of primary vulcanization is as follows: firstly, cleaning the surface of a piezoelectric ceramic ball 10, then coating an adhesive on the surface, coating a first rubber layer 120 on the surface, then placing the piezoelectric ceramic ball into a lower base plate of a vulcanization mold, and finally, aligning a positioning pin of an upper cover plate of the mold with a pin hole of the lower base plate of the mold, fastening the positioning pin and sending the mold into a flat vulcanizing machine for pressurization and vulcanization; and obtaining the front end of the hydrophone after primary vulcanization.
First vulcanization, namely, wrapping a first rubber layer 120 outside the piezoelectric ceramic ball 10, and assembling the spherical hydrophone 100:
the method comprises the following steps: polishing the surface of the first rubber layer 120 to be rough, and then coating a layer of shielding net 130 outside;
step two: a reinforcing nut 60 is added at the front end of the lead device 111 to strengthen the connection between the front end of the hydrophone and the pressure-bearing device 20, and the shielding net 130 is connected with the pressure-bearing device 20;
step three: the lead device 111 leads out positive and negative leads 101 inside the piezoelectric ceramic ball 10, and respectively welds the positive and negative leads defined by the transmission cable 30 in two grooves of the insulating device 40, connects the shielding wire of the transmission cable 30 with the pressure-bearing device 20, and connects the shielding wire with the shielding net 130 through the pressure-bearing device 20;
step four: closing the two parts of the pressure containing device 20 by means of a fastening screw (i.e. the fastening 250 shown in fig. 1);
step five: injecting epoxy glue from the glue injection hole 261 to fill the cavity in the pressure-bearing device 20 until glue overflows from the glue overflow hole 262;
after the structural member is completely assembled, as shown in fig. 1, after the assembly is completed, the pressure-bearing device 20 and a length of the transmission cable 30 close to the pressure-bearing device 20 need to be polished to make the surfaces thereof rough. The vulcanization mould of spherical hydrophone 100 resulfurization comprises lower plate, upper cover plate and pin, pinhole, and the process of resulfurization is:
the surface of the completely assembled structure shown in the figure 1 is roughened and then cleaned; uniformly coating adhesives on the front end of the hydrophone coated with the shielding net 130, the outer surface of the polished pressure-bearing device 20 and the surface of the polished partial transmission cable 30, and selecting different adhesives according to different required bonding substrates;
the hydrophone front end, the pressure-bearing device 20 and the transmission cable 30 of the connected coated shielding net 130 shown in fig. 1 are positioned in the lower base plate of the secondary vulcanization mold through the positioning protrusions 230 of the pressure-bearing device 20, and the positioning pins of the upper cover plate of the mold are aligned with the pin holes of the lower base plate, closed and fastened, and then placed on a flat vulcanizing machine to be pressurized for secondary vulcanization.
The shapes before and after the secondary vulcanization are shown in fig. 7 and 8, wherein fig. 7 is the shape before vulcanization, namely the structural shape shown in fig. 1 after the structural member is assembled, and fig. 8 is the shape of the finished spherical hydrophone after the secondary vulcanization.
To sum up, the spherical hydrophone 100 provided by the utility model introduces the shielding net 130 through twice vulcanization, thereby improving the anti-interference capability of the spherical hydrophone 100; in both the two vulcanization processes, a proper adhesive is coated according to the bonding base material to improve the bonding between the bonding base material and the chloroprene rubber;
in the structural member assembling process, the cable shielding wire needs to be connected with the front end shielding net 130 through the pressure bearing device 20; the pressure-bearing device 20 can greatly improve the hydrostatic pressure resistance of the hydrophone; the external positioning boss 230 of the pressure bearing device 20 is designed to ensure the positioning in the mold cavity during the secondary vulcanization.
The utility model relates to a ball-type hydrophone 100 is through twice vulcanization, and the cladding is shielded the external interference signal in the shielding net 130 of ball-type hydrophone 100 front end after once vulcanizing, has guaranteed the pureness of useful signal, has reduced transmission signal's loss simultaneously, has improved ball-type hydrophone 100's interference killing feature. Different adhesives are coated according to the bonding base materials before two times of vulcanization, and the bonding parts are tightly connected without layering through the adhesives under pressure in the vulcanization process, so that the acoustic performance of the equipment is ensured.
The technical means and functions of the present invention to achieve the intended purpose will be understood more deeply and concretely through the description of the embodiments, however, the attached drawings are only for reference and illustration, and are not intended to limit the present invention.
Claims (10)
1. A spherical hydrophone, comprising:
the piezoelectric ceramic ball is characterized in that the outer surface of the piezoelectric ceramic ball is coated with a first rubber layer, the outer surface of the first rubber layer is coated with a shielding net, and the piezoelectric ceramic ball is provided with a leading-out front end;
the pressure-bearing device is positioned on one side of the leading-out front end and is connected with the piezoelectric ceramic balls, and the pressure-bearing device is provided with a hollow inner cavity;
one end of the transmission cable extends into the hollow inner cavity and is connected with a positive lead and a negative lead which are led out from the leading-out front end;
the outer surfaces of the shielding net, the pressure-bearing device and the part of the cable segment of the transmission cable, which is close to the pressure-bearing device, are coated with second rubber layers.
2. The ball-type hydrophone of claim 1, wherein the lead-out front end has a lead arrangement from which the positive and negative leads of the piezo-ceramic ball are lead out.
3. The ball-type hydrophone of claim 2, wherein the lead means is a hollow screw-like structure.
4. The ball-type hydrophone of claim 3, wherein the pressure-bearing means and the piezo-ceramic balls are fixedly connected by a reinforcing nut cooperating with the lead means.
5. The ball-type hydrophone of claim 1, wherein the pressure-bearing device comprises: the first pressure-bearing shell is connected with the second pressure-bearing shell through a fastener.
6. The spherical hydrophone according to claim 1, wherein the outer peripheral wall of the pressure-bearing device is provided with glue injection holes and glue overflow holes communicated with the hollow inner cavity.
7. The ball-type hydrophone of claim 1, further comprising:
and the insulating device is positioned in the hollow inner cavity and provided with a wiring groove, and the inner core of the transmission cable is connected with the positive and negative leads in the wiring groove in a welding manner.
8. The ball-type hydrophone of claim 1, wherein the piezoelectric ceramic ball comprises first and second ball shells adhesively bonded together.
9. The ball-type hydrophone of claim 1, wherein the shield wires of the transmission cable are connected to the mesh screen by the pressure-bearing means.
10. The ball-type hydrophone of any of claims 1-9, wherein the peripheral wall of the pressure-containing device has locating projections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220078404.2U CN217442681U (en) | 2022-01-13 | 2022-01-13 | Spherical hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220078404.2U CN217442681U (en) | 2022-01-13 | 2022-01-13 | Spherical hydrophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217442681U true CN217442681U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220078404.2U Active CN217442681U (en) | 2022-01-13 | 2022-01-13 | Spherical hydrophone |
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|---|---|
| CN (1) | CN217442681U (en) |
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- 2022-01-13 CN CN202220078404.2U patent/CN217442681U/en active Active
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