CN118962910B - A deep-sea optical cable dry-wet transition terminal joint and operation method thereof - Google Patents
A deep-sea optical cable dry-wet transition terminal joint and operation method thereof Download PDFInfo
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- 230000003287 optical effect Effects 0.000 title claims abstract description 80
- 230000007704 transition Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 14
- 210000001503 joint Anatomy 0.000 title claims description 21
- 238000007789 sealing Methods 0.000 claims abstract description 83
- 239000000835 fiber Substances 0.000 claims abstract description 57
- 230000000149 penetrating effect Effects 0.000 claims abstract description 54
- 238000009434 installation Methods 0.000 claims abstract description 24
- 239000013535 sea water Substances 0.000 claims abstract description 12
- 239000013307 optical fiber Substances 0.000 claims description 98
- 238000001514 detection method Methods 0.000 claims description 49
- 238000005192 partition Methods 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 9
- 230000007613 environmental effect Effects 0.000 claims description 7
- 238000007526 fusion splicing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 108010066114 cabin-2 Proteins 0.000 description 21
- 238000013461 design Methods 0.000 description 21
- 238000012423 maintenance Methods 0.000 description 15
- 230000007774 longterm Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3816—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres for use under water, high pressure connectors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3847—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces
- G02B6/3849—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces using mechanical protective elements, e.g. caps, hoods, sealing membranes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses a submarine communication equipment technology, and aims to provide a deep-sea optical cable dry-wet transition terminal connector and an operation method thereof, wherein the technical scheme is characterized by comprising a deep-sea optical cable input end sealing module for sealing the position of a deep-sea optical cable access dry cabin; the multi-core fiber pressure-resistant cabin penetrating device comprises a dry cabin, a wet cabin, a multi-core fiber pressure-resistant cabin penetrating piece, a fiber output interface module, a pipe clamp and a product, wherein the dry cabin is used for bearing external seawater pressure, the wet cabin is used for pressure balance, the multi-core fiber pressure-resistant cabin penetrating piece is used for connecting the dry cabin and the wet cabin, the fiber output interface module is positioned at a terminal of the wet cabin and is used for being matched with a wet plug fiber connector assembly through an oil pipe, the pipe clamp is used for fixing the whole terminal and is connected with an equipment cabin installation panel, the product has oil filling and pressure compensation functions, can adapt to working conditions of more than 3000 meters under water, and the quantity of optical cable input and flexible pipes and the output of the wet plug fiber connector assembly can be customized according to user requirements, so that the multi-core fiber pressure-resistant cabin penetrating device is high in flexibility and applicability, and suitable for the technical field of submarine communication equipment.
Description
Technical Field
The invention relates to a submarine communication equipment technology, in particular to a deep sea optical cable dry-wet transition terminal connector and an operation method thereof.
Background
With the development of ocean resources and the deep research of ocean science, there is an increasing demand for subsea communication devices. Umbilical cables are an important subsea communication medium, and their stability and reliability are critical to the overall communication system. However, the existing dry-wet transition terminal joint of the deep-sea optical cable cannot meet the requirements of oil filling and pressure compensation under the deep water working condition, and lacks flexibility and applicability. Therefore, there is an urgent need for a deep sea cable dry-wet transition terminal connector that can accommodate conditions above 3000 meters underwater and has high flexibility and applicability.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a deep sea optical cable dry-wet transition terminal joint and an operation method thereof, and the deep sea optical cable dry-wet transition terminal joint has the functions of oil filling and pressure compensation, can adapt to working conditions of more than 3000 meters under water, and can customize the number of optical cable input, oil pipes and wet-plug optical fiber connector component output according to the requirements of users, thereby having high flexibility and applicability.
In order to achieve the purpose, the invention provides the following technical scheme that the deep sea optical cable dry-wet transition terminal connector comprises:
the deep sea optical cable input end sealing module is used for sealing the position of the deep sea optical cable access trunk;
The dry cabin is used for bearing external seawater pressure;
A wet tank for pressure equalization;
The multi-core optical fiber pressure-resistant cabin penetrating piece is used for connecting the dry cabin and the wet cabin;
The optical fiber output interface module is positioned at the terminal of the wet cabin and is used for being matched and connected with the wet pluggable optical fiber connector assembly through an oil pipe;
and the pipe clamp is used for fixing the whole terminal and is connected with the equipment cabin mounting panel.
The invention is further characterized in that a dry cabin fixing pressing plate is arranged at the joint of the deep-sea optical cable input end sealing module and the dry cabin, two sealing structures for blocking seawater from entering the terminal along the optical cable outer sheath or the inner sheath are respectively arranged in the deep-sea optical cable input end sealing module, a leak detection port for checking the installation quality of the sealing structures is arranged on the shell of the deep-sea optical cable input end sealing module, and a standard plug for closing the leak detection port after leak detection is completed is arranged in the leak detection port.
The invention is further characterized in that two O-shaped sealing rings are arranged at two ends of the dry cabin and are sealed with the matched parts, a leak detection port for checking the installation quality of the O-shaped sealing rings is arranged on the shell of the dry cabin, and a standard plug for sealing the leak detection port after leak detection is completed is arranged in the leak detection port.
The invention is further characterized in that a dry cabin fiber box fixing frame is arranged in the dry cabin, and a dry cabin fiber box for welding optical fibers in the deep sea optical cable and the optical fibers led out by the multi-core fiber through cabin piece and providing enough space for coiling residual long optical fibers is arranged on the dry cabin fiber box fixing frame.
The invention is further arranged that the wet cabin is an oil-filled pressure balance cabin, an oil pipe led out from the terminal of the wet cabin serves as a pressure compensator, and the wet cabin is filled with oil and communicated through the wet plug optical fiber connector assembly.
The invention is further characterized in that the pressure in the wet cabin can be automatically adjusted according to the external environmental pressure, a wet cabin fiber box fixing frame is arranged in the wet cabin, and the wet cabin fiber box fixing frame is provided with a wet cabin fiber box which is used for welding optical fibers in the tail oil pipe and optical fibers led out by the multi-core fiber cabin penetrating piece and providing enough space for coiling residual length optical fibers.
The multi-core fiber pressure-resistant cabin penetrating piece is characterized by further comprising a dry-wet cabin partition plate for partitioning a dry cabin and a wet cabin and a multi-core fiber pressure-resistant cabin penetrating piece which is arranged on the dry-wet cabin partition plate and is fixed through a cabin penetrating piece fixing plate, wherein the multi-core fiber pressure-resistant cabin penetrating piece bears the axial pressure directed by the wet cabin to the dry cabin, and pressure-resistant and sealing requirements among the multi-core fiber pressure-resistant cabin penetrating piece partition plate, the optical fiber and the multi-core fiber pressure-resistant cabin penetrating piece shell are met.
The invention is further arranged that the optical fiber output interface module adopts a standard interface matched with the oil pipe, and the wet cabin, the optical fiber output interface module, the oil pipe and the wet plug optical fiber connector component form a pressure compensation unit so as to ensure the normal work of deep sea working conditions.
The pipe clamp is further arranged into two groups, is used for clamping and fixing the whole terminal, is arranged on the installation panel of the equipment cabin, and is clamped and installed in a screw fastening mode by adopting an upper half structure and a lower half structure.
The operation method of the dry-wet transition terminal joint of the deep sea optical cable is characterized by comprising the following steps of:
S1, preparing a structure, namely, before the installation of a dry-wet transition terminal joint of a deep-sea optical cable, firstly preparing each component part including a deep-sea optical cable input end sealing module, a dry cabin, a wet cabin, a multi-core optical fiber pressure-resistant cabin penetrating piece, an optical fiber output interface module and a pipe clamp, and after ensuring that all components are intact, installing according to the following steps;
s2, installing a sealing module, namely installing the sealing module at the input end of the deep-sea optical cable at the position of a dry cabin, ensuring that two sealing structures of the sealing module are uniformly and tightly wrapped on an optical cable outer sheath and an optical cable inner sheath, then checking the installation quality of the sealing structure by using a leakage detection port, ensuring that no leakage phenomenon exists, and sealing the leakage detection port by using a standard plug after the leakage detection is completed;
s3, mounting a dry cabin, namely fixing the dry cabin on an equipment cabin, checking whether O-shaped rings at two ends of the dry cabin are mounted correctly or not, performing tightness check by using a leakage detection port, and sealing the leakage detection port after confirming that the leakage detection port is correct;
S4, mounting the wet cabin on the other side of the dry cabin, ensuring normal oil filling function, connecting the wet pluggable optical fiber connector assembly by using an oil pipe, ensuring smooth oil filling of the oil pipe, and automatically adjusting the pressure in the wet cabin according to the external environmental pressure to keep stable;
S5, installing the cabin penetrating piece, namely installing the multi-core optical fiber pressure-resistant cabin penetrating piece between the dry cabin and the wet cabin, ensuring that the multi-core optical fiber pressure-resistant cabin penetrating piece is stable and can bear axial pressure from the wet cabin, checking the tightness of the cabin penetrating piece, and ensuring that leakage does not occur;
S6, connecting the optical fiber output interface module to the wet cabin terminal to ensure good matching with the oil pipe, wherein the module can be smoothly connected with the wet pluggable optical fiber connector assembly through the oil pipe to ensure normal work;
s7, fusion splicing of the optical fibers, namely finishing optical fiber fusion splicing operation, and ensuring that all the optical fibers are connected correctly;
s8, mounting the pipe clamps, namely finally, integrally fixing the terminal connector on the mounting panel of the equipment cabin by using the pipe clamps, ensuring stable mounting, and clamping by adopting an upper half structure and a lower half structure in a screw fastening mode;
And S9, final inspection, namely after the steps are finished, final inspection is carried out on the whole dry-wet transition terminal joint of the deep sea optical cable, the stability and the tightness of all components are confirmed, and pressure detection is carried out and a test result is recorded for future inspection, so that the expected performance of the deep sea optical cable is ensured.
The beneficial effects of the invention are as follows:
1. Compared with the prior art, the deep sea optical cable dry-wet transition terminal connector adopts an advanced sealing technology and a pressure compensation design, so that the optical cable stability in a deep sea environment is remarkably improved, extreme pressure and temperature conditions can be adapted, stable operation under deep sea working conditions is ensured, firstly, the double sealing structure of the input end sealing module can effectively prevent seawater from penetrating along the outer sheath or the inner sheath of the optical cable, so that the safety of an internal optical fiber is ensured, and in addition, the design of the multi-core optical fiber pressure-resistant cabin penetrating piece between the dry cabin and the wet cabin not only realizes effective separation of the dry cabin and the wet cabin, but also can bear axial pressure from the wet cabin, and ensures the connection stability and tightness.
2. The design of the dry-wet transition terminal connector of the deep sea optical cable fully considers the working performance in an extremely deep sea environment, the oil-filled pressure balance function of the wet cabin can automatically adjust the pressure in the cabin according to the pressure change of the external environment, so that the structural damage and the optical fiber performance reduction caused by the severe change of the external pressure are avoided, meanwhile, the optical fiber output interface module adopts a standardized interface design, ensures the compatibility with the wet-plug optical fiber connector assembly, ensures the connection and maintenance work to be more efficient and convenient, ensures the connection reliability and the signal stability, realizes the series of performance optimization, improves the integral operation efficiency of the deep sea optical cable system, reduces the maintenance cost and difficulty, and provides more reliable technical support for deep sea communication.
3. The invention has remarkable advantages in terms of durability and reliability, especially aiming at special requirements of deep sea environment, the sealing design of the dry cabin and the wet cabin is combined with the use of the O-shaped sealing ring, so that the penetration of seawater can be effectively prevented, the service life of equipment is prolonged, in addition, all connecting parts are carefully designed and subjected to tight leak detection test, the sealing performance and the pressure resistance of a system after installation are ensured, the design concept effectively reduces the failure probability of the equipment caused by environmental factors in the long-term use process, the reliability of the whole system is improved, and the durability of the dry-wet transition terminal joint of the deep sea optical cable can not only adapt to the long-term deep sea operation environment, but also reduce the cost input caused by frequent maintenance.
4. The invention also provides a targeted design in the aspect of maintenance convenience, firstly, the standardized design of each component of the system enables damaged components to be replaced quickly during maintenance, reduces downtime, and in addition, the arrangement of the leak detection port enables the integrity of the sealing structure to be checked at any time in the use process, so that potential problems can be found timely, serious consequences caused by small problems are avoided, the upper half structure design and the lower half structure design of the pipe clamp are convenient for quick installation and disassembly, the maintenance work efficiency is improved, the work intensity of operators is reduced, the overall usability of equipment is improved, the maintenance and management of the deep sea optical cable are more efficient, the structure is reasonable, the manufacturing is convenient, the operation is simple and convenient, the defects in the prior art are avoided, the long-term, stable and reliable communication requirements of deep sea can be met, and the invention is suitable for popularization and application.
Drawings
Fig. 1 is a front view of a construction diagram of a dry-wet transition terminal joint for a deep sea cable according to the present invention.
Fig. 2 is a right side view of the construction of the dry-wet transition terminal joint of the deep sea cable of the present invention.
FIG. 3 is a block diagram of a deep sea cable input end seal module in a deep sea cable dry-wet transition terminal fitting of the present invention.
Fig. 4 is a block diagram of a dry bay in a dry and wet transition terminal joint of a deep sea cable according to the present invention.
Fig. 5 is a block diagram of a wet cabin in a dry-wet transition terminal joint of a deep sea cable according to the present invention.
FIG. 6 is a block diagram of a multi-core fiber pressure resistant nacelle-passing member in a dry-wet transition terminal joint of a deep sea cable of the present invention.
The reference numerals of the figures 1-6 are 1, a deep sea optical cable input end sealing module, 2, a dry cabin, 3, a wet cabin, 4, a multi-core optical fiber pressure-resistant cabin penetrating member, 5, an optical fiber output interface module, 6, a pipe clamp, 7, a dry cabin fixing pressing plate, 8, a sealing structure, 9, a standard plug, 10, a dry cabin disc fiber box fixing frame, 11, a dry cabin disc fiber box, 12, a wet cabin disc fiber box fixing frame, 13, a dry and wet cabin partition plate, 14, a cabin penetrating member fixing plate, 15, a multi-core optical fiber cabin penetrating member, 16, an optical cable tail buffer sleeve, 17, an optical cable inner sheath sealing, 18 and a wet cabin disc fiber box.
Detailed Description
Embodiments of the dry-wet transition terminal fittings for deep sea fiber optic cables and methods of operating the same according to the present invention are further described with reference to FIGS. 1-6.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second", and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The dry-wet transition terminal joint of the deep sea optical cable shown in fig. 1 to 6 comprises:
the deep-sea optical cable input end sealing module 1 is used for sealing the position of the deep-sea optical cable connected to the dry cabin 2;
a dry cabin 2 for receiving external seawater pressure;
a wet tank 3 for pressure balancing;
The multi-core optical fiber pressure-resistant cabin penetrating piece 4 is used for connecting the dry cabin 2 and the wet cabin 3;
The optical fiber output interface module 5 is positioned at the terminal end of the wet cabin 3 and is used for being matched and connected with the wet pluggable optical fiber connector assembly through an oil pipe;
a pipe clamp 6 for fixing the whole terminal and connecting with the equipment compartment mounting panel;
the multi-core fiber pressure-resistant cabin penetrating piece 4 can meet cabin penetrating sealing of not more than 16-core fibers, can resist large pressure difference between the wet cabin 3 and the dry cabin 2, meets deep sea application requirements, and has the characteristics of miniaturization and high reliability.
The deep sea optical cable input end sealing module 1 is provided with a dry cabin fixing pressing plate 7 at the joint of the dry cabin 2, two sealing structures 8 for blocking seawater from entering the terminal along an optical cable outer sheath or an inner sheath are respectively arranged in the deep sea optical cable input end sealing module 1, a leak detection opening for checking the installation quality of the sealing structures 8 is arranged on the shell of the deep sea optical cable input end sealing module 1, a standard plug 9 for sealing the leak detection opening after leak detection is arranged in the leak detection opening, the deep sea optical cable input end sealing module 1 is of a structure for sealing an entering cabin cable, and the deep sea optical cable input end sealing module further comprises an optical cable tail buffer sleeve 16 arranged at the tail part and used for buffering and sealing, and further comprises an optical cable inner sheath sealing 17 for further preventing seawater from penetrating into the terminal. The part can be selected to have different structural forms according to different input umbilical cables.
Two O-shaped sealing rings are arranged at two ends of the dry cabin 2 and are sealed with matched parts, a leak detection port for detecting the installation quality of the O-shaped sealing rings is arranged on a shell of the dry cabin 2, a standard plug 9 for sealing the leak detection port after leak detection is arranged in the leak detection port, a dry cabin fiber box fixing frame 10 is arranged in the dry cabin 2, a dry cabin fiber box 11 for welding optical fibers in a deep sea optical cable and optical fibers led out of a multi-core optical fiber through-cabin piece 15 and providing enough space for coiling residual optical fibers is arranged on the dry cabin fiber box fixing frame 10, the dry cabin 2 is of a sealed and pressure-resistant cabin structure, air is arranged in the dry cabin 2, and the optical fibers in the optical cable and the optical fibers led out of the dry end of the multi-core optical fiber through-cabin piece 15 are welded.
The wet cabin 3 is an oil-filled pressure balance cabin, an oil pipe led out from the terminal end of the oil pipe serves as a pressure compensator, the oil is filled and communicated with the wet cabin 3 through a wet plug optical fiber connector assembly, the pressure in the wet cabin 3 can be automatically adjusted according to the external environment pressure, a wet cabin disc fiber box fixing frame 12 is arranged in the wet cabin 3, an optical fiber used for welding an optical fiber in a tail oil pipe and an optical fiber led out from a multi-core optical fiber cabin penetrating member 15 and providing a wet cabin disc fiber box 18 with enough space for coiling residual optical fibers is arranged on the wet cabin disc fiber box fixing frame 12, and the optical fiber led out from the wet end of the multi-core optical fiber cabin penetrating member 15 and the optical fiber in an output oil pipe are welded.
The multi-core fiber pressure-resistant cabin penetrating piece 4 comprises a dry cabin partition plate 13 for partitioning the dry cabin 2 and the wet cabin 3, and a multi-core fiber cabin penetrating piece 15 which is arranged on the dry cabin partition plate 13 and fixed through a cabin penetrating piece fixing plate 14, wherein the multi-core fiber pressure-resistant cabin penetrating piece 4 bears the axial pressure directed by the wet cabin 3 to the dry cabin 2, meets the pressure-resistant and sealing requirements among the multi-core fiber pressure-resistant cabin penetrating piece 4 partition plate, the optical fiber and the multi-core fiber pressure-resistant cabin penetrating piece 4 shell, and realizes the connection of the input end optical cable optical fiber and the oil pipe output optical fiber.
The optical fiber output interface module 5 adopts standard interfaces matched with the oil pipes, the wet cabin 3, the optical fiber output interface module 5, the oil pipes and the wet pluggable optical fiber connector assembly form a pressure compensation unit, normal working of deep sea working conditions is ensured, and the optical fiber output interface module 5 can be provided with 4 standard interfaces at most.
The pipe clamps 6 are in two groups and are used for clamping and fixing the whole terminal and installing the whole terminal on the installation panel of the equipment cabin, and the whole terminal is clamped and installed in a screw fastening mode by adopting an upper half structure and a lower half structure.
All sealing used for the structure adopts O-shaped rings, and the index in the invention is preferably as follows, the fiber core number is less than or equal to 16 cores, the diameter of the matched umbilical cable is from phi 7mm to phi 18mm, the number of output oil pipe and wet plug optical fiber connector components is less than or equal to 4, the optical fiber insertion loss is less than or equal to 0.25dB (1310/1550/1625 nm), the working water depth is not less than 3000m, the working temperature is between-10 ℃ and +50 ℃, and the design life is 25 years.
Compared with the prior art, the deep sea optical cable dry-wet transition terminal connector adopts an advanced sealing technology and a pressure compensation design, so that the optical cable stability in a deep sea environment is remarkably improved, extreme pressure and temperature conditions can be adapted, stable operation under the deep sea working condition is ensured, firstly, the dual sealing structure 8 of the input end sealing module can effectively prevent seawater from penetrating along the outer sheath or the inner sheath of the optical cable, so that the safety of internal optical fibers is ensured, and in addition, the design of the multi-core optical fiber pressure-resistant cabin penetrating piece 4 between the dry cabin 2 and the wet cabin 3 not only realizes effective separation of the dry cabin and the wet cabin, but also can bear axial pressure from the wet cabin 3, and ensures the stability and the tightness of connection.
The design of the dry-wet transition terminal connector of the deep sea optical cable fully considers the working performance in an extremely deep sea environment, the oil-filled pressure balance function of the wet cabin 3 can automatically adjust the pressure in the cabin according to the pressure change of the external environment, so that the structural damage and the optical fiber performance reduction caused by the severe change of the external pressure are avoided, meanwhile, the optical fiber output interface module 5 adopts a standardized interface design, the compatibility with a wet-plug optical fiber connector assembly is ensured, the connection and maintenance work is more efficient and convenient, the connection reliability and the signal stability are ensured, the realization of the series of performance optimization not only improves the integral operation efficiency of a deep sea optical cable system, but also reduces the maintenance cost and difficulty, and provides more reliable technical support for deep sea communication.
The invention has remarkable advantages in terms of durability and reliability, especially aiming at special requirements of deep sea environment, the sealing design of the dry cabin 2 and the wet cabin 3 is combined with the use of the O-shaped sealing ring, so that the penetration of seawater can be effectively prevented, the service life of equipment is prolonged, in addition, all connecting parts are carefully designed and subjected to tight leak detection test, the sealing performance and the pressure resistance of a system after installation are ensured, the design concept effectively reduces the failure probability of the equipment caused by environmental factors in the long-term use process, the reliability of the whole system is improved, and the durability of the dry-wet transition terminal joint of the deep sea optical cable can not only adapt to the long-term deep sea operation environment, but also reduce the cost investment caused by frequent maintenance.
The invention also makes a targeted design in the aspect of maintenance convenience, firstly, the standardized design of each component of the system enables the damaged component to be replaced quickly during maintenance, reduces the downtime, and in addition, the arrangement of the leak detection port enables the integrity of the sealing structure 8 to be checked at any time in the use process, so that potential problems can be found timely, serious consequences caused by small problems are avoided, the upper half structure design and the lower half structure design of the pipe clamp 6 are convenient for quick installation and disassembly, the maintenance work efficiency is improved, the maintenance process is simplified, the work intensity of operators is reduced, the overall usability of equipment is improved, the maintenance and management of the deep sea optical cable are more efficient, the structure is reasonable, the manufacturing is convenient, the operation is simple and convenient, the defects in the prior art are avoided, the long-term, stable and reliable communication requirements of deep sea can be met, and the invention is suitable for popularization, implementation and application.
The operation method of the dry-wet transition terminal joint of the deep sea optical cable is characterized by comprising the following steps of:
S1, preparing a structure, namely, before the installation of a dry-wet transition terminal joint of a deep-sea optical cable, firstly preparing each component part including a deep-sea optical cable input end sealing module 1, a dry cabin 2, a wet cabin 3, a multi-core optical fiber pressure-resistant cabin penetrating piece 4, an optical fiber output interface module 5 and a pipe clamp 6, and after ensuring that all components are intact, installing according to the following steps;
s2, installing a sealing module, namely installing the deep-sea optical cable input end sealing module 1 at the position of a dry cabin 2, ensuring that two sealing structures 8 of the sealing module are uniformly and tightly wrapped on an optical cable outer sheath and an optical cable inner sheath, then checking the installation quality of the sealing structures 8 by using a leakage detection port, ensuring that no leakage phenomenon exists, and sealing the leakage detection port by using a standard plug 9 after the leakage detection is completed;
S3, mounting the dry cabin 2, namely fixing the dry cabin 2 on an equipment cabin, checking whether O-shaped rings at two ends of the dry cabin 2 are mounted correctly or not, performing tightness check by using a leakage detection port, and closing the leakage detection port after confirming that the leakage detection port is correct;
S4, mounting the wet cabin 3, namely mounting the wet cabin 3 on the other side of the dry cabin 2, ensuring normal oil filling function, connecting the wet pluggable optical fiber connector assembly by using an oil pipe, ensuring smooth oil filling of the oil pipe, and automatically adjusting the pressure in the wet cabin 3 according to the external environmental pressure to keep stable;
S5, installing the cabin penetrating piece, namely installing the multi-core optical fiber pressure-resistant cabin penetrating piece 4 between the dry cabin 2 and the wet cabin 3, ensuring that the multi-core optical fiber pressure-resistant cabin penetrating piece is stable and can bear axial pressure from the wet cabin 3, checking the tightness of the cabin penetrating piece, and ensuring that leakage does not occur;
s6, connecting the optical fiber output interface module 5 to the terminal of the wet cabin 3 to ensure good matching with an oil pipe, wherein the module can be smoothly connected with a wet pluggable optical fiber connector assembly through the oil pipe to ensure normal work;
s7, fusion splicing of the optical fibers, namely finishing optical fiber fusion splicing operation, and ensuring that all the optical fibers are connected correctly;
s8, installing the pipe clamp 6, namely finally, integrally fixing the terminal connector on an installation panel of the equipment cabin by using the pipe clamp 6, ensuring stable installation, and clamping by adopting an upper half structure and a lower half structure in a screw fastening mode;
And S9, final inspection, namely after the steps are finished, final inspection is carried out on the whole dry-wet transition terminal joint of the deep sea optical cable, the stability and the tightness of all components are confirmed, and pressure detection is carried out and a test result is recorded for future inspection, so that the expected performance of the deep sea optical cable is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention, but one skilled in the art can make common changes and substitutions within the scope of the technical solution of the present invention.
Claims (2)
1. A deep sea cable wet and dry transition terminal joint, comprising:
the deep-sea optical cable input end sealing module (1) is used for sealing the position of the deep-sea optical cable access dry cabin (2);
-a dry cabin (2) for withstanding external sea water pressure;
a wet cabin (3) for pressure equalization;
the multi-core optical fiber pressure-resistant cabin penetrating piece (4) is used for connecting the dry cabin (2) and the wet cabin (3);
The optical fiber output interface module (5) is positioned at the terminal of the wet cabin (3) and is used for being matched and connected with the wet pluggable optical fiber connector assembly through an oil pipe;
a pipe clamp (6) for fixing the whole terminal and connecting with the equipment cabin mounting panel;
The deep-sea optical cable input end sealing module (1) and the dry cabin (2) are connected with a dry cabin fixing pressing plate (7), two sealing structures (8) for blocking seawater from entering the terminal along an optical cable outer sheath or an inner sheath are respectively arranged in the deep-sea optical cable input end sealing module (1), a leak detection port for checking the installation quality of the sealing structures (8) is formed in a shell of the deep-sea optical cable input end sealing module (1), and a standard plug (9) for sealing the leak detection port after leak detection is completed is arranged in the leak detection port;
Two ends of the dry cabin (2) are respectively provided with two O-shaped sealing rings which are sealed with the matched parts, a leak detection port used for checking the installation quality of the O-shaped sealing rings is arranged on the shell of the dry cabin (2), and a standard plug (9) used for sealing the leak detection port after leak detection is finished is arranged in the leak detection port;
A dry cabin fiber coiling box fixing frame (10) is arranged in the dry cabin (2), and a dry cabin fiber coiling box (11) which is used for welding optical fibers in the deep-sea optical cable and optical fibers led out by the multi-core fiber passing cabin piece (15) and providing enough space for coiling residual long optical fibers is arranged on the dry cabin fiber coiling box fixing frame (10);
the wet cabin (3) is an oil-filled pressure balance cabin, an oil pipe led out from the terminal of the wet cabin serves as a pressure compensator, and the wet cabin (3) is filled with oil and communicated through a wet plug optical fiber connector assembly;
The pressure in the wet cabin (3) can be automatically adjusted according to the external environmental pressure, a wet cabin fiber box fixing frame (12) is arranged in the wet cabin (3), and a wet cabin fiber box (18) which is used for welding optical fibers in tail oil pipes and optical fibers led out by a multi-core fiber cabin penetrating piece (15) and providing enough space for coiling residual length optical fibers is arranged on the wet cabin fiber box fixing frame (12);
The multi-core fiber pressure-resistant cabin penetrating piece (4) comprises a dry-wet cabin partition plate (13) for partitioning a dry cabin (2) and a wet cabin (3) and a multi-core fiber cabin penetrating piece (15) which is arranged on the dry-wet cabin partition plate (13) and is fixed through a cabin penetrating piece fixing plate (14), wherein the multi-core fiber pressure-resistant cabin penetrating piece (4) bears the axial pressure directed to the dry cabin (2) by the wet cabin (3) and meets the pressure-resistant and sealing requirements among the multi-core fiber pressure-resistant cabin penetrating piece (4) partition plates, the optical fibers and the multi-core fiber pressure-resistant cabin penetrating piece (4) shells;
The optical fiber output interface module (5) adopts a standard interface matched with the oil pipe, and the wet cabin (3), the optical fiber output interface module (5), the oil pipe and the wet plug optical fiber connector component form a pressure compensation unit so as to ensure the normal work of deep sea working conditions;
The pipe clamps (6) are in two groups and are used for clamping the whole fixed terminal and installing the fixed terminal on the installation panel of the equipment cabin, and the fixed terminal is clamped and installed in a screw fastening mode by adopting an upper half structure and a lower half structure.
2. A method of operating a dry-wet transition terminal fitting for a deep sea fiber optic cable as defined in claim 1, comprising the steps of:
S1, preparing a structure, namely, before the installation of a dry-wet transition terminal joint of a deep-sea optical cable, firstly preparing each component part including a deep-sea optical cable input end sealing module (1), a dry cabin (2), a wet cabin (3), a multi-core optical fiber pressure-resistant cabin penetrating piece (4), an optical fiber output interface module (5) and a pipe clamp (6), and after ensuring that all components are intact, installing according to the following steps;
S2, installing a sealing module, namely installing the sealing module (1) at the input end of the deep-sea optical cable at the position of a dry cabin (2), ensuring that two sealing structures (8) of the sealing module are uniformly and tightly wrapped on an optical cable outer sheath and an optical cable inner sheath, checking the installation quality of the sealing structures (8) by using a leakage detection port, ensuring that no leakage phenomenon exists, and sealing the leakage detection port by using a standard plug (9) after the leakage detection is finished;
s3, mounting a dry cabin (2), namely fixing the dry cabin (2) on an equipment cabin, checking whether O-shaped rings at two ends of the dry cabin (2) are mounted correctly or not, performing tightness check by using a leakage detection port, and closing the leakage detection port after confirming that the leakage detection port is correct;
S4, mounting the wet cabin (3), namely mounting the wet cabin (3) on the other side of the dry cabin (2), ensuring normal oil filling function, connecting the wet pluggable optical fiber connector assembly by using an oil pipe, ensuring smooth oil filling of the oil pipe, and automatically adjusting the pressure in the wet cabin (3) according to the external environmental pressure to keep stable;
s5, installing the cabin penetrating piece, namely installing the multi-core fiber pressure-resistant cabin penetrating piece (4) between the dry cabin (2) and the wet cabin (3), ensuring that the multi-core fiber pressure-resistant cabin penetrating piece is stable and can bear axial pressure from the wet cabin (3), checking the tightness of the cabin penetrating piece, and ensuring that leakage does not occur;
s6, connecting the optical fiber output interface module (5) to the terminal of the wet cabin (3) to ensure good matching with the oil pipe, wherein the module can be smoothly connected with the wet pluggable optical fiber connector assembly through the oil pipe to ensure normal operation;
s7, fusion splicing of the optical fibers, namely finishing optical fiber fusion splicing operation, and ensuring that all the optical fibers are connected correctly;
S8, installing the pipe clamp (6), namely finally, integrally fixing the terminal connector on an installation panel of the equipment cabin by using the pipe clamp (6), ensuring stable installation, and clamping by adopting an upper half structure and a lower half structure in a screw fastening mode;
And S9, final inspection, namely after the steps are finished, final inspection is carried out on the whole dry-wet transition terminal joint of the deep sea optical cable, the stability and the tightness of all components are confirmed, and pressure detection is carried out and a test result is recorded for future inspection, so that the expected performance of the deep sea optical cable is ensured.
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| US4598290A (en) * | 1983-06-29 | 1986-07-01 | Mobil Oil Corporation | Fiber optic penetrator for offshore oil well exploration and production |
| US6796821B2 (en) * | 2002-06-06 | 2004-09-28 | Ocean Design, Inc. | Field installable cable termination assembly |
| EP2713191B1 (en) * | 2012-10-01 | 2019-08-28 | Siemens Aktiengesellschaft | Subsea cable termination assembly, subsea connector and method |
| CN108646365A (en) * | 2018-06-15 | 2018-10-12 | 江苏亨通海洋光网系统有限公司 | A kind of sea floor optoelectronic composite cable deep-sea terminal separation device |
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| CN115241837A (en) * | 2022-08-30 | 2022-10-25 | 上海禹海科技有限公司 | Oil-filled cable and dry-type cable connection terminal |
| CN116345226A (en) * | 2023-04-21 | 2023-06-27 | 中国科学院西安光学精密机械研究所 | A small size multifunctional underwater expansion connector |
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