CN112781713A - Pressure balance structure of interference type optical fiber hydrophone - Google Patents
Pressure balance structure of interference type optical fiber hydrophone Download PDFInfo
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- CN112781713A CN112781713A CN202011563180.6A CN202011563180A CN112781713A CN 112781713 A CN112781713 A CN 112781713A CN 202011563180 A CN202011563180 A CN 202011563180A CN 112781713 A CN112781713 A CN 112781713A
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- optical fiber
- air
- rubber
- supporting framework
- pressure balance
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000835 fiber Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000009189 diving Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009931 pascalization Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a pressure balance structure of an interference type optical fiber hydrophone, and belongs to the technical field of optical fiber hydrophones. The pressure balance structure of the interference type optical fiber hydrophone comprises a support framework, an elastic arm, an optical fiber sensitive section, sound-transmitting rubber and a rubber air bag; the sound-transmitting rubber is wrapped outside the supporting framework, and the elastic arm and the optical fiber sensitive section are sequentially surrounded between the supporting framework and the side wall contact surface of the supporting framework; an air cavity is formed between the contact surfaces of the elastic arms and the supporting framework; the rubber air bag is fixedly connected to the tail end of the supporting framework, and the air cavity air passage is communicated with the adjusting air cavity of the rubber air bag. The pressure balance structure of the interference type optical fiber hydrophone enables the air pressure of the air cavity to meet the requirements of different water depths and even use in deep water environments by adjusting the air pressure in the rubber air bag.
Description
Technical Field
The invention relates to the technical field of optical fiber hydrophones, in particular to a pressure balance structure of an interference type optical fiber hydrophone.
Background
The traditional interference type optical fiber hydrophone generally comprises a supporting framework, an elastic arm, an optical fiber sensitive section, sound-transmitting rubber and an air cavity, as shown in fig. 1, due to the existence of the air cavity, the elastic arm can deform under the net water pressure, the deformation is large, the optical fiber sensitive section can be broken to damage the hydrophone, and in the limit condition, the elastic arm can contact the supporting framework to disable the air cavity, as shown in fig. 2. Therefore, the common interference hydrophone can be only used in a diving environment, and the application range of the interference hydrophone is greatly limited.
Disclosure of Invention
The invention aims to provide a pressure balance structure of an interference type optical fiber hydrophone, which can freely adjust the pressure balance and can be used in different water depths and even deep water environments.
In order to solve the technical problem, the invention provides a pressure balance structure of an interference type optical fiber hydrophone, which comprises a supporting framework, an elastic arm, an optical fiber sensitive section, sound-transmitting rubber and a rubber air bag, wherein the elastic arm is arranged on the supporting framework;
the sound-transmitting rubber is wrapped outside the supporting framework, and the elastic arm and the optical fiber sensitive section are sequentially surrounded between the supporting framework and the side wall contact surface of the supporting framework;
an air cavity is formed between the contact surfaces of the elastic arms and the supporting framework;
the rubber air bag is fixedly connected to the tail end of the supporting framework, and the air cavity air passage is communicated with the adjusting air cavity of the rubber air bag.
Optionally, the air passage penetrates through the support framework, one end of the air passage is communicated with the air cavity, and the other end of the air passage is communicated with the adjusting air cavity.
Optionally, the tail end of the rubber air bag is provided with an air inlet and outlet valve.
Optionally, the rubber airbag is connected with the rubber airbag in a sealing manner through a clamping groove.
Optionally, the rubber air bag is a high-strength rubber air bag.
The invention provides a pressure balance structure of an interference type optical fiber hydrophone, which comprises a supporting framework, an elastic arm, an optical fiber sensitive section, sound-transmitting rubber and a rubber air bag; the sound-transmitting rubber is wrapped outside the supporting framework, and the elastic arm and the optical fiber sensitive section are sequentially surrounded between the supporting framework and the side wall contact surface of the supporting framework; an air cavity is formed between the contact surfaces of the elastic arms and the supporting framework; the rubber air bag is fixedly connected to the tail end of the supporting framework, and the air cavity air passage is communicated with the adjusting air cavity of the rubber air bag. The pressure balance structure of the interference type optical fiber hydrophone enables the air pressure of the air cavity to meet the requirements of different water depths and even use in deep water environments by adjusting the air pressure in the rubber air bag.
Drawings
FIG. 1 is a schematic structural diagram of a conventional interferometric fiber optic hydrophone provided by the present invention;
FIG. 2 is a graph showing the variation of hydrostatic pressure of a conventional interferometric fiber optic hydrophone provided by the present invention;
FIG. 3 is a schematic diagram of a pressure balance structure of an interferometric fiber optic hydrophone according to the present invention.
Detailed Description
The pressure balance structure of the interference type optical fiber hydrophone provided by the invention is further described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example one
The invention provides a pressure balance structure of an interference type optical fiber hydrophone, which comprises a support framework 1, an elastic arm 2, an optical fiber sensitive section 3, sound-transmitting rubber 4 and a rubber air bag 6, wherein the support framework is provided with a plurality of elastic ribs; the sound-transmitting rubber 4 is wrapped outside the support framework 1, and the elastic arm 2 and the optical fiber sensitive section 3 are sequentially surrounded between the support framework 1 and the side wall contact surface of the support framework 1; an air cavity 5 is formed between the contact surfaces of the elastic arms 2 and the supporting framework 1; the rubber air bag 6 is fixedly connected to the tail end of the supporting framework 1, and the air passage of the air chamber 5 is communicated with the adjusting air chamber 7 of the rubber air bag 6.
Specifically, the air passage penetrates through the support framework 1, one end of the air passage is communicated with the air cavity 5, and the other end of the air passage is communicated with the adjusting air cavity 7; the use under different water depth conditions can be realized by adjusting the volume and the initial air pressure of the adjusting air cavity 7, and the air cavity can be used in the whole sea area from shallow sea to 12000 m water depth; if the air conditioner is used under the condition of deep sea (high hydrostatic pressure), the volume of the adjusting air cavity 7 can be properly increased or the initial air pressure in the air cavity can be increased; when the air conditioning chamber is subjected to hydrostatic pressure, the volume of the air conditioning chamber 7 is reduced, and the pressure is increased until the internal pressure and the external pressure are balanced. Because the air cavity 5 is communicated with the adjusting air cavity 7, the adjusting air cavity 7 has the same pressure as the outside, the elastic arm 2 cannot deform, and the hydrophone still has good performance; the tail end of the rubber air bag 6 is provided with an air inlet and outlet valve 8; the air inlet and outlet valve 8 can be completely sealed to prevent air from overflowing in long-term use, and compared with a pressure balance structure combining an oil seal and an air cavity, the air inlet and outlet valve is simple and reliable in structure and flexible in adjustment of the use pressure range.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (5)
1. An interference type optical fiber hydrophone pressure balance structure is characterized by comprising a supporting framework (1), an elastic arm (2), an optical fiber sensitive section (3), sound-transmitting rubber (4) and a rubber air bag (6);
the sound-transmitting rubber (4) is wrapped outside the supporting framework (1), and the elastic arm (2) and the optical fiber sensitive section (3) are sequentially surrounded between the supporting framework (1) and the side wall contact surface of the supporting framework (1);
an air cavity (5) is formed between the contact surfaces of the elastic arms (2) and the support framework (1);
the rubber air bag (6) is fixedly connected to the tail end of the supporting framework (1), and an air passage of the air chamber (5) is communicated with a regulating air chamber (7) of the rubber air bag (6).
2. The interference type optical fiber hydrophone pressure balance structure of claim 1, wherein the air passage penetrates through the support frame (1), one end of the air passage is communicated with the air cavity (5), and the other end of the air passage is communicated with the adjusting air cavity (7).
3. The pressure balance structure of the interference type optical fiber hydrophone according to claim 1, wherein an air inlet valve and an air outlet valve (8) are arranged at the tail end of the rubber air bag (6).
4. The pressure balance structure of the interference type optical fiber hydrophone according to claim 2, wherein the rubber air bag (6) is hermetically connected with the rubber air bag (6) through a clamping groove.
5. The pressure balance structure of an interferometric optical fiber hydrophone of claim 1, wherein the rubber balloon (6) is a high strength rubber balloon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011563180.6A CN112781713A (en) | 2020-12-25 | 2020-12-25 | Pressure balance structure of interference type optical fiber hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011563180.6A CN112781713A (en) | 2020-12-25 | 2020-12-25 | Pressure balance structure of interference type optical fiber hydrophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112781713A true CN112781713A (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011563180.6A Pending CN112781713A (en) | 2020-12-25 | 2020-12-25 | Pressure balance structure of interference type optical fiber hydrophone |
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| CN (1) | CN112781713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855232A (en) * | 2023-02-24 | 2023-03-28 | 青岛哈尔滨工程大学创新发展中心 | Swimming bladder bionic amphibious optical fiber ocean acoustic sensor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998226A (en) * | 1988-07-20 | 1991-03-05 | Gec-Marconi Limited | Hydrophone |
| US20030035344A1 (en) * | 2001-07-10 | 2003-02-20 | Maas Steven J. | Fiber-optic hydrophone |
| US20110305116A1 (en) * | 2009-08-19 | 2011-12-15 | Nicholas Lagakos | Intensity Modulated Fiber Optic Hydrophones |
| CN103528665A (en) * | 2013-09-29 | 2014-01-22 | 中国电子科技集团公司第二十七研究所 | Novel Fabry-Perot interference MEMS (Micro Electro Mechanical System) sound wave sensor |
| CN105115586A (en) * | 2015-05-28 | 2015-12-02 | 北京航天控制仪器研究所 | Self-balancing static-pressure resistant air-back mandrel-type interference fiber hydrophone probe |
| CN109397617A (en) * | 2018-10-19 | 2019-03-01 | 海鹰企业集团有限责任公司 | A kind of perfusion packaging method of fiber optic hydrophone unit |
| CN109932048A (en) * | 2019-03-14 | 2019-06-25 | 浙江大学 | A kind of interference type optical fiber hydrophone probe based on difference structure |
| CN110006519A (en) * | 2019-03-26 | 2019-07-12 | 中国船舶重工集团公司第七一五研究所 | The air backing fiber optic hydrophone unit of integrated sensitization structure |
| CN110673204A (en) * | 2019-11-13 | 2020-01-10 | 山东省科学院激光研究所 | Fiber grating hydrophone based on balance static pressure of spiral pipe |
| CN111947766A (en) * | 2020-07-17 | 2020-11-17 | 武汉普惠海洋光电技术有限公司 | Deep-sea high-sensitivity optical fiber hydrophone |
-
2020
- 2020-12-25 CN CN202011563180.6A patent/CN112781713A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4998226A (en) * | 1988-07-20 | 1991-03-05 | Gec-Marconi Limited | Hydrophone |
| US20030035344A1 (en) * | 2001-07-10 | 2003-02-20 | Maas Steven J. | Fiber-optic hydrophone |
| US20110305116A1 (en) * | 2009-08-19 | 2011-12-15 | Nicholas Lagakos | Intensity Modulated Fiber Optic Hydrophones |
| CN103528665A (en) * | 2013-09-29 | 2014-01-22 | 中国电子科技集团公司第二十七研究所 | Novel Fabry-Perot interference MEMS (Micro Electro Mechanical System) sound wave sensor |
| CN105115586A (en) * | 2015-05-28 | 2015-12-02 | 北京航天控制仪器研究所 | Self-balancing static-pressure resistant air-back mandrel-type interference fiber hydrophone probe |
| CN109397617A (en) * | 2018-10-19 | 2019-03-01 | 海鹰企业集团有限责任公司 | A kind of perfusion packaging method of fiber optic hydrophone unit |
| CN109932048A (en) * | 2019-03-14 | 2019-06-25 | 浙江大学 | A kind of interference type optical fiber hydrophone probe based on difference structure |
| CN110006519A (en) * | 2019-03-26 | 2019-07-12 | 中国船舶重工集团公司第七一五研究所 | The air backing fiber optic hydrophone unit of integrated sensitization structure |
| CN110673204A (en) * | 2019-11-13 | 2020-01-10 | 山东省科学院激光研究所 | Fiber grating hydrophone based on balance static pressure of spiral pipe |
| CN111947766A (en) * | 2020-07-17 | 2020-11-17 | 武汉普惠海洋光电技术有限公司 | Deep-sea high-sensitivity optical fiber hydrophone |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855232A (en) * | 2023-02-24 | 2023-03-28 | 青岛哈尔滨工程大学创新发展中心 | Swimming bladder bionic amphibious optical fiber ocean acoustic sensor |
| CN115855232B (en) * | 2023-02-24 | 2023-06-23 | 青岛哈尔滨工程大学创新发展中心 | Swimming bladder bionic amphibious optical fiber marine acoustic sensor |
| US11898902B1 (en) | 2023-02-24 | 2024-02-13 | Oingdao Innovation And Development Center Of Harbin Engineering University | Swim bladder bionic amphibious optical fiber ocean acoustic sensor |
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Application publication date: 20210511 |
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