CN104568109A - Hydrophone high hydrostatic pressure acoustic pressure sensitivity testing device - Google Patents
Hydrophone high hydrostatic pressure acoustic pressure sensitivity testing device Download PDFInfo
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- CN104568109A CN104568109A CN201310496326.3A CN201310496326A CN104568109A CN 104568109 A CN104568109 A CN 104568109A CN 201310496326 A CN201310496326 A CN 201310496326A CN 104568109 A CN104568109 A CN 104568109A
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- liquid column
- column cylinder
- thin plate
- receiving set
- nautical receiving
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000009931 pascalization Methods 0.000 title claims abstract description 32
- 230000035945 sensitivity Effects 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 8
- 210000004907 gland Anatomy 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000010998 test method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005259 measurement Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a device for testing high hydrostatic pressure and sound pressure sensitivity of a hydrophone, which comprises: the vibration exciter is used for generating a vibration signal; a liquid column cylinder as a container for testing; the thin plate is arranged at the bottom of the liquid column cylinder and used for converting the vibration signal into a sound pressure signal in the liquid; the sealing cover is arranged at the top of the liquid column cylinder and is used for forming a closed container together with the liquid column cylinder and the thin plate; the base is arranged below the liquid column cylinder and used for limiting the vibration direction of the vibration exciter and supporting the thin plate so as to prevent the thin plate from generating large deformation under the action of high hydrostatic pressure; the standard hydrophone is used for measuring sound pressure; the pressure gauge is arranged on the liquid column cylinder and used for measuring hydrostatic pressure; the high-pressure valve is arranged on the liquid column cylinder, and liquid can be injected into the liquid column cylinder through the high-pressure valve; and at least one hole formed in the sealing cover and used for leading out the hydrophone and a connecting wire of the hydrophone to be tested. The invention solves the problem that the traditional test method can not test the high hydrostatic pressure sensitivity.
Description
Technical field
The present invention relates to field of sensing technologies, particularly relate to a kind of acoustic pressure sensitivity of hydrophone measurement mechanism.
Background technology
Nautical receiving set is transducer underwater signal being converted to electric signal.Sound wave is the known up to now form of energy that uniquely can carry out long-distance communications under water of the mankind, and therefore, as the main equipment of underwater signal detection, nautical receiving set carries vital role in resource exploration, target detection etc. aspect under water.
When carrying out underwater sound signal detection, due to working environment special under water, nautical receiving set often needs to bear the MPa even hydrostatic pressing of tens MPas.The existence of hydrostatic pressing may impact key characteristics such as the sound pressure sensitivities of nautical receiving set.Therefore, as a kind of important underwater kit, be particularly applied to the situation of deep water, nautical receiving set needs to measure the sound pressure sensitivity under its hydrostatic pressing in production, use procedure, has good performance during to ensure that nautical receiving set works under water.
The method of traditional acoustic pressure sensitivity of hydrophone test comprises free field calibration method, vibration jet method, closed chamber calibration method etc.Free field calibration method is generally calibrated nautical receiving set by reciprocity calbration principle in anechoic tank.Chen Yis etc. report calibrating installation and calibration steps (acoustics and electronic engineering, the 3rd phase, 2005 of nautical receiving set free field sensitivity under high hydrostatic pressure; Metering journal, the 29th volume, the 3rd phase, 2008), but the method needs to set up anechoic tank, to correcting device and site requirements higher.Vibration jet method supports liquid column cylinder by shaking table and produces vibration, thus makes to produce stationary field in the liquid in liquid column cylinder.Zhang Wentao etc. disclose a kind of device for testing acoustic pressure sensitivity of hydrophone applying for a patent in CN101813511, this device by shaking table realize sound pressure sensitivity measurement and reduce nautical receiving set testing cost, reduce testing apparatus volume.But because whole liquid column cylinder is vibrated with shaking table, the method is difficult to realize sealing, cannot be used for the high hydrostatic pressure sound pressure sensitivity of testing nautical receiving set.Closed chamber calibration method is full of in the rigidity closed chamber of liquid at one, sets up a sound field by transmitting transducer in chamber.But in high hydrostatic pressure situation, the method needs good design to realize sealing and facilitating sensor to dismantle, to reduce test job amount.And the performance of the method to transmitting transducer proposes very high requirement, transmitting transducer must have good performance under high hydrostatic pressure.Such transmitting transducer often cost is higher, and not easily changes.
Therefore, the invention provides a kind of nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity, this device can conveniently realize nautical receiving set high hydrostatic pressure sound pressure sensitivity measure, and with low cost, be convenient to assembling.This improves nautical receiving set method of testing, expands the important technological problems that nautical receiving set applied environment must solve.
Summary of the invention
(1) technical matters that will solve
In view of this, fundamental purpose of the present invention is to provide a kind of nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity, solves the problem that conventional test methodologies can not carry out high hydrostatic pressure sensitivity test, and realizes low cost, be convenient to the proving installation assembled.
(2) technical scheme
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity, this device comprises:
Vibrator 10, for generation of vibration signal;
Liquid column cylinder 20, as the container of test;
Be installed on the thin plate 30 bottom liquid column cylinder 20, for vibration signal being converted to the sound pressure signal in liquid;
Be installed on the gland bonnet 40 at liquid column cylinder 20 top, for forming closed container with liquid column cylinder 20 and thin plate 30;
Be installed on the pedestal 50 below liquid column cylinder 20, for limiting the direction of vibration of vibrator 10 and supporting thin plate 30, under high hydrostatic pressure effect, produce comparatively large deformation to prevent thin plate 30;
Standard hydrophone 70, for measuring acoustic pressure;
Be installed on the tensimeter 80 in liquid column cylinder 20, for measuring hydrostatic pressing;
Be installed on the high pressure valve 90 in liquid column cylinder 20, liquid can be injected in liquid column cylinder 20 by this high pressure valve 90; And
At least one opens the hole 42 on gland bonnet 40, for drawing the connecting line of nautical receiving set 70 and nautical receiving set to be measured.
In such scheme, this nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity comprises one further for backup vibrator 10, makes vibrator 10 and the closely-coupled spring 60 of thin plate 30.
In such scheme, the length of described liquid column cylinder 20 is greater than diameter, to form stationary field in liquid column cylinder 20.
In such scheme, described thin plate 30 for there being the resilient material of larger bending strength, to ensure can not produce comparatively large deformation under high hydrostatic pressure effect.
In such scheme, described gland bonnet 40 is equipped with nautical receiving set fixture 41 further, for clamping standard hydrophone 70 and nautical receiving set to be measured.
In such scheme, described pedestal 50 further dress has center pit 51, and for limiting the direction of vibration of vibrator 10, and spring 60 can be arranged in this center pit 51;
In such scheme, described hole 42 is the threaded hole of band groove, to facilitate sealing.
(3) beneficial effect
As can be seen from technique scheme, the present invention has following beneficial effect:
1, nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity provided by the invention, produces sound field by vibrator excitation thin plate, can realize the measurement of acoustic pressure sensitivity of hydrophone under different hydrostatic pressing environment in airtight liquid column cylinder.
2, nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity provided by the invention, does not need to install transmitting transducer in liquid column cylinder 20, reduces the complicacy of equipment, reduce cost of manufacture.
Accompanying drawing explanation
Fig. 1 is for the invention provides nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity schematic diagram;
Fig. 2 is for the invention provides nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity water filling schematic diagram;
Fig. 3 seals schematic diagram for the invention provides nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity hole 42.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
As shown in FIG. 1 to 3, this nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity comprises: for generation of the vibrator 10 of vibration signal; Liquid column cylinder 20, as the container of test; Be installed on the thin plate 30 bottom liquid column cylinder 20, for vibration signal being converted to the sound pressure signal in liquid; Be installed on the gland bonnet 40 at liquid column cylinder 20 top, for forming closed container with liquid column cylinder 20 and thin plate 30; Be installed on the pedestal 50 below liquid column cylinder 20, for limiting the direction of vibration of vibrator 10 and supporting thin plate 30, under high hydrostatic pressure effect, produce comparatively large deformation to prevent thin plate 30; Spring 60, for backup vibrator 10, what make that vibrator 10 and thin plate 30 can be good is coupled; Standard hydrophone 70, for measuring acoustic pressure; Be installed on the tensimeter 80 in liquid column cylinder 20, for measuring hydrostatic pressing; Be installed on the high pressure valve 90 in liquid column cylinder 20, liquid can be injected in liquid column cylinder 20 by this high pressure valve 90.
Vibrator 10 in the present embodiment is piezoelectric ceramic piece or moving-coil vibrator, can produce vibration signal under the effect of electric signal.Vibrator 10 can be pasted onto on thin plate 30.For making vibrator 10 better can be coupled with thin plate 30, can mounting spring 60 and bottom 52, bottom 52 can be arranged on center pit 51 by screw thread, can make spring 60 backup vibrator 10 by tightening bottom 52.Under the support of spring 60, vibrator 10 can be good at being coupled with thin plate 30, and thin plate 30 produces vibration under the vibration of vibrator 10, thus inspires sound field in liquid column cylinder 20.
The height of liquid column cylinder 20 is greater than diameter, to ensure can form stable stationary field in liquid column cylinder, the acoustic pressure of this stationary field in same plane can be similar to think identical.
Thin plate 30 is elastic plate, and this thin plate has higher bending strength, and to ensure that thin plate 30 can not produce larger deformation under high hydrostatic pressure, thin plate 30 is mounted on bottom liquid column cylinder 20 by welding or thread seal, and realizes high hydrostatic pressure sealing.
Gland bonnet 40 sealing thread is connected with liquid column cylinder 20 and realizes sealing, and gland bonnet 40 has at least 1 hole 42, and nautical receiving set connecting line is drawn by this hole 42.In the present embodiment, gland bonnet 40 has 2 holes 42, be respectively used to draw the connecting line 71 of standard hydrophone 70 and the connecting line of tested nautical receiving set.Hole 42 is the threaded hole of band groove, when sealing, by nautical receiving set connecting line through this hole 42, the groove in hole 42 is installed a packing washer 44, and by installation one stud 43 with holes crush seal packing ring 44, thus reach sealing effectiveness.
The using method of nautical receiving set high hydrostatic pressure sound pressure sensitivity provided by the present invention test is: base liquid column cylinder 20 mistakes be threaded or the method for welding is fixed on pedestal 50, vibrator 10, spring 60, bottom 52 are arranged in the center pit 51 of pedestal 50 successively, and by the screw thread of tightening 52 to the certain prestress of spring 60, vibrator 10 is pushed against on thin plate 30 by spring 60.Be arranged on nautical receiving set fixture 41 respectively by nautical receiving set to be measured and standard hydrophone 70, mounting means is generally to be tied with tinsel or clings with adhesive plaster.Nautical receiving set connecting line then passing hole 42 is drawn and is sealed.Be arranged on by top cover 40 in liquid column cylinder 20, mounting means is generally to be installed by screw thread, and on screw thread, is wound around sealant tape to reach the object of sealing.Tensimeter 80 and high pressure valve 90 install respectively by screw thread or the method for welding is arranged on the sidewall of liquid column cylinder 20.Before test, high pressure valve 90 is opened, and by water pump 91 to water filling in liquid column cylinder, when the display of band tensimeter 80 reaches pressure needed for test, close high pressure valve 90.By applying electric signal to vibrator 10, making to produce sound field in liquid column cylinder, by nautical receiving set to be measured and standard hydrophone 70 being compared, the measurement of sound pressure sensitivity can be realized.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity, is characterized in that, this device comprises:
Vibrator (10), for generation of vibration signal;
Liquid column cylinder (20), as the container of test;
Be installed on the thin plate (30) of liquid column cylinder (20) bottom, for vibration signal being converted to the sound pressure signal in liquid;
Be installed on the gland bonnet (40) at liquid column cylinder (20) top, for forming closed container with liquid column cylinder (20) and thin plate (30);
Be installed on the pedestal (50) of liquid column cylinder (20) below, for limiting the direction of vibration of vibrator (10) and supporting thin plate (30), under high hydrostatic pressure effect, produce comparatively large deformation to prevent thin plate (30);
Standard hydrophone (70), for measuring acoustic pressure;
Be installed on the tensimeter (80) in liquid column cylinder (20), for measuring hydrostatic pressing;
Be installed on the high pressure valve (90) in liquid column cylinder (20), liquid can be injected in liquid column cylinder (20) by this high pressure valve (90); And
At least one opens the hole (42) on gland bonnet (40), for drawing the connecting line of nautical receiving set (70) and nautical receiving set to be measured.
2. nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity according to claim 1, it is characterized in that, this nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity comprises one further for backup vibrator (10), makes vibrator (10) and thin plate (30) closely-coupled spring (60).
3. nautical receiving set high hydrostatic pressure device for testing acoustic pressure sensitivity according to claim 1, is characterized in that, the length of described liquid column cylinder (20) is greater than diameter, to form stationary field in liquid column cylinder (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310496326.3A CN104568109A (en) | 2013-10-20 | 2013-10-20 | Hydrophone high hydrostatic pressure acoustic pressure sensitivity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310496326.3A CN104568109A (en) | 2013-10-20 | 2013-10-20 | Hydrophone high hydrostatic pressure acoustic pressure sensitivity testing device |
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| Publication Number | Publication Date |
|---|---|
| CN104568109A true CN104568109A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310496326.3A Pending CN104568109A (en) | 2013-10-20 | 2013-10-20 | Hydrophone high hydrostatic pressure acoustic pressure sensitivity testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568112A (en) * | 2014-12-26 | 2015-04-29 | 南通康盛医疗器械有限公司 | Sound pressure sensitivity and directivity testing device for medical hydrophone |
| CN107576955A (en) * | 2017-09-01 | 2018-01-12 | 海鹰企业集团有限责任公司 | A kind of reliability test for underwater acoustic array |
| CN108168683A (en) * | 2017-12-22 | 2018-06-15 | 中国船舶重工集团公司第七〇五研究所 | A kind of pressure-bearing type vector hydrophone measuring device |
| WO2020222084A1 (en) * | 2019-04-29 | 2020-11-05 | Tübi̇tak | A pressure coupling chamber for hydrophone calibration |
| CN114812782A (en) * | 2022-06-23 | 2022-07-29 | 国家深海基地管理中心 | Relative calibration method for sensitivity of deep sea hydrophone |
-
2013
- 2013-10-20 CN CN201310496326.3A patent/CN104568109A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568112A (en) * | 2014-12-26 | 2015-04-29 | 南通康盛医疗器械有限公司 | Sound pressure sensitivity and directivity testing device for medical hydrophone |
| CN104568112B (en) * | 2014-12-26 | 2017-06-06 | 南通康盛医疗器械有限公司 | A kind of medical acoustic pressure sensitivity of hydrophone and directivity test device |
| CN107576955A (en) * | 2017-09-01 | 2018-01-12 | 海鹰企业集团有限责任公司 | A kind of reliability test for underwater acoustic array |
| CN108168683A (en) * | 2017-12-22 | 2018-06-15 | 中国船舶重工集团公司第七〇五研究所 | A kind of pressure-bearing type vector hydrophone measuring device |
| WO2020222084A1 (en) * | 2019-04-29 | 2020-11-05 | Tübi̇tak | A pressure coupling chamber for hydrophone calibration |
| CN114812782A (en) * | 2022-06-23 | 2022-07-29 | 国家深海基地管理中心 | Relative calibration method for sensitivity of deep sea hydrophone |
| CN114812782B (en) * | 2022-06-23 | 2022-09-02 | 国家深海基地管理中心 | Relative calibration method for sensitivity of deep sea hydrophone |
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Application publication date: 20150429 |