阅读说明：本技术 用于分布式光纤水听系统的光电复合缆 (The optoelectronic composite cable of system is listened for distribution type fiber-optic water ) 是由 饶云江 傅芸 *** 栗鸣 于 2019-08-28 设计创作，主要内容包括：本发明公开了用于分布式光纤水听系统的光电复合缆,光电复合缆从内至外依次包括硬性内部支撑层、高分子柔性材料层、弹性层、油膏层和外护套,在弹性层的外壁上紧密螺旋缠绕有至少1根的光纤,不同光纤之间不交叠,光纤外面紧密包裹油膏层。本发明中光电复合缆没有采用复杂而坚硬的金属铠装、钢丝绞合或者带材包裹,仅仅使用较软的外护套进行抗腐蚀,使得声波在传入光纤时能量损耗较低。包层利用高分子柔性材料和弹性层,使得光缆在抗拉伸的同时,对于外界声波的探测灵敏度增强。把光纤螺旋缠绕在弹性层上,使得单位测量长度内积累的光程差变化量增加,同时柔性材料的形变会带动光纤进行形变,使得光缆整体的声压灵敏度有大幅提升。(The invention discloses the optoelectronic composite cables that system is listened for distribution type fiber-optic water, optoelectronic composite cable successively includes rigid inner standoff layer, macromolecule flexible material layer, elastic layer, ointment layer and oversheath from the inside to the outside, close spiral winding has at least 1 optical fiber on the outer wall of elastic layer, it is not overlapped between different optical fiber, outside of fiber tight ointment layer.Optoelectronic composite cable uses complicated in the present invention and hard metal armouring, steel wire are twisted or band package, it is anticorrosive that softer oversheath progress is only used only, so that sound wave energy loss in incoming optical fiber is lower.Covering utilizes macromolecule flexible material and elastic layer, so that optical cable while stretch-proof, enhances the detectivity of external sound wave.Fiber spiral is wrapped on elastic layer, so that the optical path difference variable quantity accumulated in unit measurement length increases, while the deformation of flexible material will drive optical fiber and carry out deformation, so that the sound pressure sensitivity of optical cable entirety is substantially improved.)

1. a kind of optoelectronic composite cable for listening system for distribution type fiber-optic water, it is characterised in that: optoelectronic composite cable from the inside to the outside according to Secondary includes rigid inner standoff layer (102), macromolecule flexible material layer (103), elastic layer (104), ointment layer (105) and outer shield It covers (106), close spiral winding has at least 1 optical fiber (100) on the outer wall of elastic layer (104), between different optical fiber not It is overlapping, tight ointment layer (105) outside optical fiber (100).

2. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: described hard Property inner standoff layer (102) be insulating materials, is provided with inner conductive metal wire (101) in rigid inner standoff layer (102), it is interior Portion's conductive metal wire (101) outsourcing insulator, and be arranged rigid inner standoff layer (102) conductive metal wire quantity be greater than etc. In 1.

3. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: described hard Property inner standoff layer (102) in be air layer (501).

4. the optoelectronic composite cable according to claim 3 for listening system for distribution type fiber-optic water, it is characterised in that: the sky Gas-bearing formation (501) is filled using foam.

5. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: the light Fine (100) are the single mode optical fiber with sheath, multi-core optical fiber or less fundamental mode optical fibre.

6. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: the light The structure of fine (100) are as follows: from the inside to the outside successively include bare fibre (201), tight sheath (202) and loose sheath (401), tight sheath (202) it and send between sheath (401) with ointment filling.

7. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: the light Fine (100) use bend insensitive optical fiber.

8. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: the light Fine (100) closing twist is wrapped in the screw pitch range on elastic layer (104) outer wall are as follows: is greater than the diameter of optical fiber (100) and is less than 2 times of elastic layer (104) diameter.

9. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: the oil It is twisted that spiral is carried out added with metal wire (301) and optical fiber (100) in layer of paste (105) together, metal wire (301) not with optical fiber (100) it contacts, different metal line does not contact between (301).

10. the optoelectronic composite cable according to claim 1 for listening system for distribution type fiber-optic water, it is characterised in that: described Macromolecule flexible material layer (103) uses flexible stretch-proof material, and the oversheath (106) uses anticorrosive and has sealing The material of property.

Technical field

The invention belongs to hydrophone field and fiber-optic cable fields, and in particular to listen detection suitable for distributed water The optoelectronic composite cable of system.

Background technique

A kind of tool of the hydrophone as important perception marine information, leads in military affairs, national defence, the people's livelihood and scientific research Domain has important and is widely applied.Existing more mature hydrophone depends on 3 kinds of technologies, i.e. electronic detector skill Art, fibre optic interferometer technology and fiber laser technology.But this 3 kinds of technologies have that cost is too high, sensitivity is unstable The problems such as there are numerous blind spots in fixed, space measurement region.For these problems, (DAS) skill is sensed based on optical fiber distributed type sound wave The optical fiber distributed type hydrophone of art is suggested as a revolutionary technology.However, although existing DAS system only needs one Ordinary optic fibre can be carried out distributed monitoring, greatly reduce cost and maintenance cost, and can carry out airspace along optical fiber Without blind monitoring, still, because the Young's modulus of general single mode fiber is higher, external sound wave changes for its length and refractive index Become limited, therefore, hydrophone requirement is not achieved in the existing sound pressure sensitivity based on the DAS system for stretching general single mode fiber.

In addition, common communications optical cable or optoelectronic composite cable are due to the particularity of underwater environment for anticorrosive, anti-height Pressure and stretch-proof generally use complicated and hard metal armouring, steel wire are twisted or band package, so that external sound wave passes through Waste is too big when optical cable is transmitted to sensor fibre.Therefore, it is sensed according to existing cable configuration, the acoustic pressure of DAS system Sensitivity can further decrease.Therefore, a kind of novel photoelectric compound cable is designed, while realizing that off-lying sea distributed monitoring, both-end are logical Letter and power transmission, are the critical problems of the distributed optical fiber sensing system functionization based on DAS technology.

Summary of the invention

It is an object of the invention to: it is clever using sound wave existing for general single mode fiber is stretched to solve current underwater sensing optical cable The big problem of conventional ocean cable configuration sound wave conduction loss amount of hydrophone requirement and other uses is not achieved in sensitivity, proposes Listen for distribution type fiber-optic water the optoelectronic composite cable of system.

The technical solution adopted by the invention is as follows:

The optoelectronic composite cable of system is listened for distribution type fiber-optic water, optoelectronic composite cable successively includes that hardness is internal from the inside to the outside Supporting layer, macromolecule flexible material layer, elastic layer, ointment layer and oversheath, close spiral winding has on the outer wall of elastic layer At least 1 optical fiber does not overlap between different optical fiber, outside of fiber tight ointment layer.

Further, the rigid inner standoff layer is insulating materials, and inner conductive gold is provided in rigid inner standoff layer Belong to line, inner conductive metal wire outsourcing insulator, and the conductive metal wire quantity that rigid inner standoff layer is arranged in is more than or equal to 1。

It further, is air layer in the rigid inner standoff layer.

Further, the air layer is filled using foam.

Further, the optical fiber is the single mode optical fiber with sheath, multi-core optical fiber or less fundamental mode optical fibre.

Further, the structure of the optical fiber are as follows: from the inside to the outside successively include bare fibre, tight sheath and loose sheath, tight sheath It is filled between sheath with ointment with sending.

Further, the optical fiber uses bend insensitive optical fiber.

Further, the close fiber optic is spirally wound on the screw pitch range on elastic layer outer wall are as follows: greater than the diameter of optical fiber And less than 2 times of elastic layer diameter.

Further, to carry out spiral together with optical fiber added with metal wire in the ointment layer twisted, metal wire not with optical fiber It contacts, is not contacted between different metal line.

Further, the macromolecule flexible material layer uses flexible stretch-proof material.

Further, the oversheath is using material anticorrosive and with leakproofness.

In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:

1, in the present invention, the optoelectronic composite cable suitable for optical fiber distributed type hydrophone of proposition does not use complicated and hard Metal armouring, steel wire is twisted or band package, be only used only softer oversheath carry out it is anticorrosive so that sound wave is incoming Energy loss is lower when optical fiber.Covering utilizes macromolecule flexible material and elastic layer, so that optical cable is while stretch-proof, for The detectivity of external sound wave enhances.Fiber spiral is wrapped on elastic layer, so that the light accumulated in unit measurement length Path difference variable quantity increases, while the deformation of flexible material will drive optical fiber and carry out deformation, so that the sound pressure sensitivity of optical cable entirety It is substantially improved.

2, in the present invention, conductive metal layer or high Young's modulus with insulating layer is can be used in internal hardness inner standoff layer Hollow as rigid support so that optical cable is less influenced by seanoise；Conductive metal is used in rigid internal support Line, then it is also possible that off-lying sea power transmission is realized simultaneously.

3, in the present invention, air layer is used in rigid inner standoff layer, then external sound wave will lead to hollow rigid support hair Raw miniature deformation, to cause sensor fibre to enhance the sensing capability of faint sound wave, so that the acoustic pressure of optical cable is sensitive Degree increases.

4, in the present invention, spiral is carried out simultaneously using metal wire and the optical fiber with tight sheath and is twisted, so that the anti-survey of optical fiber While pressure energy power increases, there is no being decreased obviously for the perceptual sensitivity of external sound wave for optical fiber.

Detailed description of the invention

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.

Fig. 1 is the schematic cross-section of optoelectronic composite cable in the embodiment of the present invention 1；

Fig. 2 is the cross section of optic fibre schematic diagram with tight sheath in the embodiment of the present invention 1；

Fig. 3 is the schematic cross-section of optoelectronic composite cable in the embodiment of the present invention 2；

Fig. 4 is the cross section of optic fibre schematic diagram with tight sheath in the embodiment of the present invention 2；

Fig. 5 is the schematic cross-section of optoelectronic composite cable in the embodiment of the present invention 3；

Fig. 6 is the cross-sectional view of the metal wire with insulating layer in the embodiment of the present invention 3；

Fig. 7 is that optical fiber and metal wire closing twist are wrapped in the schematic diagram on elastic layer outer wall in the present invention；

Marked in the figure: 100- optical fiber, 101- conductive metal wire, 102- hardness inner standoff layer, 103- macromolecule flexibility material The bed of material, 104- elastic layer, 105- ointment layer, 106- oversheath, 201- bare fibre, the tight sheath of 202-, 401- pine sheath, 301- gold Belong to line, 302- insulating layer, 501- air layer.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.

Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive Property include so that include a series of elements process, method, article or equipment not only include those elements, but also Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic Element.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that including institute State in the process, method, article or equipment of element that there is also other identical elements.

The optoelectronic composite cable of system is listened for distribution type fiber-optic water, optoelectronic composite cable successively includes that hardness is internal from the inside to the outside Supporting layer 102, macromolecule flexible material layer 103, elastic layer 104, ointment layer 105 and oversheath 106, in the outer of elastic layer 104 Close spiral winding has at least 1 optical fiber 100 on wall, does not overlap between different optical fiber, 100 outside tight ointment of optical fiber Layer 105.

Further, the rigid inner standoff layer 102 is insulating materials, is provided with inside in rigid inner standoff layer 102 Conductive metal wire 101.101 outsourcing insulator of inner conductive metal wire, and the conductive metal of rigid inner standoff layer 102 is set Line number amount is more than or equal to 1.

It further, is air layer 501 in the rigid inner standoff layer 102.

Further, the air layer 501 is filled using foam.

Further, the optical fiber 100 is the single mode optical fiber with sheath, multi-core optical fiber or less fundamental mode optical fibre.

Further, the structure of the optical fiber 100 are as follows: from the inside to the outside successively include bare fibre 201, tight sheath 202 and pine shield Set 401, tight sheath 202 and send between sheath 401 with ointment fill.

Further, optical fiber 100 uses bend insensitive optical fiber, so that optical fiber 100 will not generate big bending after spiral winding Loss.

Further, 100 closing twist of optical fiber is wrapped in the screw pitch range on 104 outer wall of elastic layer are as follows: is greater than optical fiber 100 diameter and it is less than 2 times of 104 diameter of elastic layer.

Further, it carries out spiral together with optical fiber 100 added with metal wire 301 in the ointment layer 105 to be twisted, metal wire 301 do not contact with optical fiber 100, do not contact between different metal line 301.

Further, the macromolecule flexible material layer 103 uses flexible stretch-proof material.

Further, the oversheath 106 is using material anticorrosive and with leakproofness.

Feature and performance of the invention are described in further detail with reference to embodiments.