CN205506203U - High pressure resistant spherical hydrophone - Google Patents
High pressure resistant spherical hydrophone Download PDFInfo
- Publication number
- CN205506203U CN205506203U CN201620297075.5U CN201620297075U CN205506203U CN 205506203 U CN205506203 U CN 205506203U CN 201620297075 U CN201620297075 U CN 201620297075U CN 205506203 U CN205506203 U CN 205506203U
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- CN
- China
- Prior art keywords
- cover plate
- hydrophone
- connecting rod
- encapsulation cover
- venthole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a high pressure resistant spherical hydrophone. Current spherical hydrophone rubber vulcanization technology causes the hydrophone unstable. The utility model discloses a two -stage shoulder hole interference fit of noise -absorbing layer and shell, packaging cover plate places at the noise -absorbing layer top, and the clamp plate is pressed on packaging cover plate, the connecting rod top cooperates with noise -absorbing layer and packaging cover plate's connecting rod mounting hole, two plush coppers on the metal joint are matchd with two locating holes that the clamp plate was seted up, two hemisphere faces of spherical ceramic ball just, the negative pole respectively the looks carried forward correspond connecting wire just, the negative pole, the wire wear out connecting rod top and clamp plate part just, negative pole and the interior cable of metal joint just, the negative pole corresponds and meets, noise -absorbing layer irritate oilhole, venthole respectively with packaging cover plate irritate the oilhole, the venthole communicates with each other, packaging cover plate irritate the oilhole and for the venthole epoxy seal, be full of silicon oil between shell and the piezoceramics ball. The utility model provides the high sensitivity and the resistance to pressure of hydrophone.
Description
Technical field
This utility model belongs to sensor technical field, particularly relates to a kind of high voltage bearing spherical hydrophone.
Background technology
Pressure hydrophone is requisite equipment in underwater acoustic measurement, is the core in passive sonar system.
Hydrophone is the sensor of a kind of electroacoustic conversion, when hydrophone sensing element senses acoustical signal, by acoustical signal
It is converted into the signal of telecommunication, otherwise when sensing element is encouraged by the signal of telecommunication, and sensing element generation mechanical vibration, by machine
Tool vibration is the most outwards propagated, thus completes electroacoustic conversion, is mainly used in underwater acoustic measurement and the underwater sound
Transmission of quantity value.In low frequency ranges, spherical pressure hydrophone is because of its horizontal non-directive, and vertical direction is except knot
Outside structure stop portions also non-directive and be widely used in study of sound field.
The sensor of spherical hydrophone typically uses piezoelectric ceramics ball, to sensor in manufacturing process at present
Surface process the method using the vulcanization of rubber additional water-proof sound-transmitting layer, to prevent during using the corruption such as sea water more
The liquid corrosion to hydrophone of erosion property, increases the service life.But rubber vulcanization process is complicated and exists certain
Limitation.On the one hand, although the easy problem of aging of rubber makes moderate progress through over cure, in the case of life-time service
Still there will be；Being affected by sulfuration process, in sulfidation, piezoelectric ceramics ball is extruded by external force,
Thus the change of mode of oscillation can be caused；When carrying out the vulcanization of rubber, easily internal at rubber and surface produces bubble.
These factors can reduce the sensitivity of spherical hydrophone and to its frequency response range, directivity and stability etc.
Produce impact.On the other hand, in use, the hydraulic pressure of external environment condition, temperature can be acted on by rubber
On sensor, thus causing the unstability of hydrophone, measurement result produces error therewith, the most uncomfortable
Acoustic field under environment under high pressure.
Summary of the invention
The purpose of this utility model be in existing spherical hydrophone processing technology the vulcanization of rubber defect and
The impact causing the performances such as hydrophone sensitivity, directivity and stability, proposes a kind of height highly sensitive, resistance to
Pressure, good stability, the spherical hydrophone of length in service life, this spherical hydrophone simple in construction, easily operate, and subtracts
Little tradition carries out the vulcanization of rubber to piezoelectric ceramics surface and processes the impact brought to hydrophone.
The purpose of this utility model is achieved through the following technical solutions:
This utility model includes piezoelectric ceramics ball, shell, connecting rod, silicone oil, absorbent treatment, encapsulation cover plate, pressure
Plate, metal joint and cable；Described absorbent treatment is fixed on outer casing inner wall；Encapsulation cover plate is placed on absorbent treatment top
Portion, pressing plate is pressed on encapsulation cover plate；Described connecting rod is vertically arranged, and top is opened with absorbent treatment and encapsulation cover plate
If connecting rod installing hole coordinate；The hole, two location that two plush coppers on metal joint are offered with pressing plate is mated real
Now position；Metal joint hollow, is used for placing cable；Described spherical ceramic ball is by two same inner diameter and thickness
The form semi-sphere bonding of degree forms；Wire is fixed in connecting rod, and bottom is exposed connecting rod and fixed with conehead outward；Cone
In head wedge pressure electroceramics ball；Two hemispherical positive and negative electrodes of spherical ceramic ball are corresponding after connecting respectively to be connected
Wire passes the positive and negative electrode of conehead outer portion, wire pass the positive and negative electrode of connecting rod top and clamp portion with
The positive and negative electrode correspondence of cable connects；The filling oilhole that the filling oilhole that absorbent treatment is offered is offered with encapsulation cover plate communicates；
The venthole that the venthole that absorbent treatment is offered is offered with encapsulation cover plate communicates；The filling oilhole of described encapsulation cover plate and going out
Port sealing is arranged；Silicone oil it is full of between shell and piezoelectric ceramics ball.
Described absorbent treatment is two-stage multidiameter structure, and with the two-stage shoulder hole interference fit of enclosure.
The height of described absorbent treatment is 3cm.
Filling oilhole and the venthole epoxy resin of described encapsulation cover plate seal.
The nose end of described shell, the shaft shoulder of encapsulation cover plate and the equal rounding of axle head.
The beneficial effects of the utility model are: optimize the structure design of spherical hydrophone, make simple；Use
The method of enclosure designs and perfusion silicone oil replaces the surface treatment method of the tradition vulcanization of rubber, improves hydrophone
Sensitivity and resistance to pressure, extend service life；Inside is provided with absorbent treatment, reduces the self noise of hydrophone；
The metal joint on top is effectively reduced the electromagnetic interference signal in space.This utility model can be widely applied to the underwater sound
The every field measured, the particularly acoustic field under medium and low frequency environment under high pressure.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present utility model；
Fig. 2 is sensitivity calibration curve chart of the present utility model.
In figure: 1, piezoelectric ceramics ball, 2, shell, 3, connecting rod, 4, silicone oil, 5, absorbent treatment, 6,
Encapsulation cover plate, 7, pressing plate, 8, fill oilhole, 9, venthole, 10, metal joint, 11, cable, 12,
Plush copper.
Detailed description of the invention
For a more detailed description to this utility model below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of high voltage bearing spherical hydrophone, including piezoelectric ceramics ball 1, shell 2, connect
Bar 3, silicone oil 4, absorbent treatment 5, encapsulation cover plate 6, pressing plate 7, metal joint 10 and cable 11；Shell 2
Formed by epoxy resin perfusion, play support, waterproof and oilproof, entrant sound and pressure effect, sound wave can be reduced and passing
Energy loss during broadcasting, additionally, epoxy resin quality is harder, can improve the compressive property of spherical hydrophone；
Absorbent treatment 5 is two-stage multidiameter structure, and with the two-stage shoulder hole interference fit within shell 2；Encapsulation cover plate
6 are placed on absorbent treatment 5 top, and pressing plate 7 is pressed on encapsulation cover plate 6；Connecting rod 3 is vertically arranged, top with
The connecting rod installing hole that absorbent treatment 5 and encapsulation cover plate 6 are offered coordinates；Two plush coppers 12 on metal joint 10
Realization location is mated in the hole, two location offered with pressing plate 7, and metal joint 10 and pressing plate 7 all use rustless steel
Material, is conducive to electromagnetic interference during shielding hydrophone work；Metal joint 10 hollow, is used for placing cable
11；Spherical ceramic ball 1 is formed by the form semi-sphere bonding of two same inner diameter and thickness, with eliminate whole spherical structure because of
Wall unevenness spares to the impact that the both horizontally and vertically directivity of hydrophone brings；Wire is fixed on connecting rod
In, bottom is exposed connecting rod and is fixed with conehead outward；In conehead wedge pressure electroceramics ball 1；Spherical ceramic ball 1
Two hemispherical positive and negative electrodes connect respectively after the corresponding wire that connects pass the positive and negative electrode of conehead outer portion,
Wire passes that the positive and negative electrode of connecting rod top and pressing plate 7 part is corresponding with the positive and negative electrode of cable 11 to connect；
The filling oilhole 8 that the filling oilhole 8 that absorbent treatment 5 is offered is offered with encapsulation cover plate 6 communicates；What absorbent treatment 5 was offered goes out
The venthole that pore 9 is offered with encapsulation cover plate 6 communicates；Filling oilhole 8 and the venthole 9 of encapsulation cover plate 6 use ring
Epoxy resins seals；Absorbent treatment is prepared from by the rubber with sound absorbing capabilities, in order to unnecessary in absorbing hydrophone
Sound reflecting, play the effect of noise reduction, height is 3cm, it is ensured that the perpendicularity of connecting rod；Shell and piezoelectricity
It is full of silicone oil 4 between Ceramic Balls, plays the effect of insulation, stable in properties, isolation external environment condition and piezoelectric ceramics
The directly contact of ball, it is possible to extend the service life of hydrophone.The nose end of shell 2, the shaft shoulder of encapsulation cover plate and
The equal rounding of axle head, to reduce the interference effect of hydrophone internal acoustic signals reflection.
The manufacture installation process of this high voltage bearing spherical hydrophone is as follows:
1, perfusion shell 2: pour into after epoxy resin is carried out vacuum degassing bubble process and add thermosetting in outer casing mold
Changing and form shell 2, the last demoulding carries out surface polishing；The temperature being heating and curing is set as 60 DEG C.
2, by wire through component die, epoxy resin pours in component die after carrying out vacuum degassing bubble process
Be heating and curing formation wire, connecting rod and conehead assembly, and the last demoulding carries out surface polishing；The temperature being heating and curing
Degree is set as 60 DEG C.
3, after two hemispherical positive and negative electrodes of piezoelectric ceramics ball connect respectively, the corresponding wire that connects passes conehead
The positive and negative electrode of outer portion, is then embedded in conehead in the taper hole of piezoelectric ceramics ball, and further with epoxy resin
Fixing.
4, connecting rod top passes absorbent treatment and the connecting rod installing hole of encapsulation cover plate, and by encapsulation cover plate
Fill oilhole to align with the filling oilhole of absorbent treatment, then by the two-stage shoulder hole interference fit of absorbent treatment 5 with shell,
With epoxy resin, encapsulation cover plate is bonding with shell again.
5, by the filling oilhole of encapsulation cover plate and absorbent treatment by Silicone oil injection shell, epoxy resin after filling, is used
Filling oilhole and the venthole of encapsulation cover plate are sealed, and checks encapsulation cover plate and the abutting edge of shell and cap
At the filling oilhole of plate and venthole, whether leakage of oil, if leakage of oil, reseals at leakage of oil with epoxy resin.
6, to pass the positive and negative electrode of connecting rod top and pressing plate 7 part corresponding with the positive and negative electrode of cable 11 for wire
Connect.
7, two plush coppers on metal joint are embedded in the hole, two location of pressing plate 7, it is achieved metal joint
Location, then with epoxy resin, metal joint is bonding with shell, and check epoxy resin by metal joint with outward
The whether leakage of oil of the abutting edge of shell, if leakage of oil, the most bonding with epoxy resin.
8, the method for the vulcanization of rubber is used to be attached with metal joint by cable.
Above-mentioned epoxy resin all uses E51 type epoxy resin, base material uniformly to mix with firming agent 4:1 in proportion；
The modified isophorone diamine that firming agent uses model to be W93.
Manufacture, according to above, the spherical hydrophone that installation process produces, use relative method that it is carried out sensitivity school
Standard, obtain frequency f sensitivity M curve on 10～40KHz as in figure 2 it is shown, it can be seen that
This spherical hydrophone remolding sensitivity standard hydrophone in 10KHz～40KHz frequency range exceeds 2～5dB,
Frequency response is relatively flat, it is adaptable in, acoustic field in low frequency ranges.
Claims (5)
1. a high voltage bearing spherical hydrophone, including piezoelectric ceramics ball, shell, connecting rod, silicone oil, suction
Sound layer, encapsulation cover plate, pressing plate, metal joint and cable, it is characterised in that: outside described absorbent treatment is fixed on
Shell inwall；Encapsulation cover plate is placed on absorbent treatment top, and pressing plate is pressed on encapsulation cover plate；Described connecting rod is vertical
Arranging, the connecting rod installing hole that top is offered with absorbent treatment and encapsulation cover plate coordinates；Two on metal joint convex
Realization location is mated in the hole, two location that head is offered with pressing plate；Metal joint hollow, is used for placing cable；Described
Spherical ceramic ball formed by the form semi-sphere bonding of two same inner diameter and thickness；Wire is fixed in connecting rod,
Bottom is exposed connecting rod and is fixed with conehead outward；In conehead wedge pressure electroceramics ball；Two hemisphere of spherical ceramic ball
The positive and negative electrode in face after connecting respectively the corresponding wire that connects pass the positive and negative electrode of conehead outer portion, wire passes even
The positive and negative electrode of extension bar top and clamp portion is corresponding with the positive and negative electrode of cable to connect；The filling oil that absorbent treatment is offered
The filling oilhole that hole is offered with encapsulation cover plate communicates；The venthole that the venthole that absorbent treatment is offered and encapsulation cover plate are offered
Communicate；The filling oilhole of described encapsulation cover plate and venthole seal and arrange；Silicon it is full of between shell and piezoelectric ceramics ball
Oil.
The high voltage bearing spherical hydrophone of one the most according to claim 1, it is characterised in that: described
Absorbent treatment is two-stage multidiameter structure, and with the two-stage shoulder hole interference fit of enclosure.
The high voltage bearing spherical hydrophone of one the most according to claim 1, it is characterised in that: described suction
The height of sound layer is 3cm.
The high voltage bearing spherical hydrophone of one the most according to claim 1, it is characterised in that: described envelope
Filling oilhole and the venthole epoxy resin of capping plate seal.
The high voltage bearing spherical hydrophone of one the most according to claim 1, it is characterised in that: described
The nose end of shell, the shaft shoulder of encapsulation cover plate and the equal rounding of axle head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620297075.5U CN205506203U (en) | 2016-04-11 | 2016-04-11 | High pressure resistant spherical hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620297075.5U CN205506203U (en) | 2016-04-11 | 2016-04-11 | High pressure resistant spherical hydrophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205506203U true CN205506203U (en) | 2016-08-24 |
Family
ID=56737353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620297075.5U Expired - Fee Related CN205506203U (en) | 2016-04-11 | 2016-04-11 | High pressure resistant spherical hydrophone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205506203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769733A (en) * | 2017-01-10 | 2017-05-31 | 中国计量大学 | Focusing ultrasonic wave formula river load concentration on-line measurement instrument |
| CN107995557A (en) * | 2017-10-11 | 2018-05-04 | 中国船舶重工集团公司第七〇五研究所 | Sensing and the integrated hydrophone of noise elimination and its implementation |
-
2016
- 2016-04-11 CN CN201620297075.5U patent/CN205506203U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769733A (en) * | 2017-01-10 | 2017-05-31 | 中国计量大学 | Focusing ultrasonic wave formula river load concentration on-line measurement instrument |
| CN107995557A (en) * | 2017-10-11 | 2018-05-04 | 中国船舶重工集团公司第七〇五研究所 | Sensing and the integrated hydrophone of noise elimination and its implementation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20180411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |