Longitudinal watertight outboard multi-core optical cable

Abstract

The utility model discloses a longitudinal watertight compartment outer multi-core optical cable, which comprises an outer protective sleeve layer, the inner side of the outer protective sleeve layer is provided with a grouping sealing coating protective layer, the inner side of the grouping sealing coating protective layer is provided with a plurality of optical fiber wire cores, and the outer sides of the optical fiber wire cores are sleeved with a water-blocking sealing protective layer. The center of the inner side of the outer protective sleeve layer is provided with an anti-deformation tensile piece, and the outer side of the anti-deformation tensile piece is sleeved with a tensile piece sealing protective layer. Novel non-curing, non-vulcanization and soft sealant is adopted, sealing filling is carried out in the forming process of all environments, an original curing type hard sealant filling means is replaced, optical fibers are not damaged while the sealing effect is guaranteed, a steel wire twisted rope sealing structure is adopted and arranged in the center of an optical cable product, meanwhile, a reinforced tensile metal wire core is arranged on the inner side of an outer protection sleeve layer, and the sealing effect is good. Through the internal and external double tensile deformation structures, the overall tensile capacity of the optical cable is better improved, and the stability of optical signal transmission is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical cables, and in particular relates to a longitudinal watertight cabin outer multi-core optical cable. Background Art

[0002] The environment outside the underwater equipment cabin is harsh and is significantly corroded by the marine environment. In addition to ensuring excellent optical signal transmission function, the protective layer of optical cable products laid in the marine environment outside the cabin should have excellent resistance to the marine environment and should be able to resist external ocean current disturbances, vibrations and longitudinal tension caused by the rapid navigation of underwater equipment. In addition, as a connecting component between the working equipment inside the underwater equipment cabin and the detection equipment outside the cabin, the optical cable product should also have longitudinal watertightness in the event of breakage, damage and other faults to prevent seawater from backflowing into the cabin and key components outside the cabin. Traditional optical cable products can achieve multi-core and multi-channel, but due to design, process, material and other issues, the longitudinal watertight function cannot be achieved. Previously, the industry has tried to use traditional vulcanized sealing rubber filling methods to perform watertight filling of multi-core optical cables, but the internal structural stress of the sealing rubber after vulcanization and curing caused the optical fiber to break, or to ensure the integrity of the optical fiber structure, the sealant filling degree was reduced, and the high water pressure longitudinal sealing function could not be achieved, which to a large extent restricted the development of marine military equipment, especially underwater equipment.

[0003] The patent with application number 202111063435.7 discloses a shore power cable. By setting a cavity connected to the outside inside the shore power cable, the cavity can be used to adjust the spatial density and the overall heat dissipation coefficient of the shore power cable, so that the shore power cable can adjust its density according to actual use needs, and realize the lifting and lowering of the shore power cable in different liquid environments. Further, the heat dissipation capacity inside the shore power cable can be adjusted by filling the cavity with materials with different thermal conductivities, thereby adjusting its function; combined with the above application, and with the development needs of a new generation of equipment, its optical signal communication More and more channels are required, from traditional single-channel optical fiber communication to multi-core development. In order to ensure the sealed connection between the optical cable product and the equipment, higher requirements are put forward on the adaptability of the vulcanization crimping of its sheath material. It is required that the sheath layer of the optical cable product will not be permeable, cracked, corroded, etc. after long-term immersion. At the same time, it is required to fully consider the ocean currents that may be encountered in actual underwater work, the vibration and tensile load caused by equipment acceleration and directional maneuvering, etc., to avoid the problem of affecting the practicality of the cable during use. For this reason, we propose a longitudinal watertight cabin multi-core optical cable. Utility Model Content

[0004] The purpose of the utility model is to provide a longitudinal watertight multi-core optical cable outside the cabin to solve the problem raised in the above-mentioned background technology that with the development of a new generation of equipment, the number of channels required for optical signal communication is increasing, and the traditional single-channel optical fiber communication is developing towards multi-core communication. In order to ensure the sealed connection between the optical cable product as a whole and the equipment, higher requirements are put forward on the adaptability of the vulcanization crimping of its sheath material, and the sheath layer of the optical cable product is required to be free from water permeability, cracking, corrosion and the like after long-term immersion. At the same time, full consideration is required to be given to the ocean currents that may be encountered in actual underwater work, the vibration and tensile load caused by equipment acceleration, directional maneuvering and the like, so as to avoid the problem that the practicability of the cable is affected during use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-core optical cable outside a longitudinal watertight cabin, comprising an outer protective sheath layer, a grouped sealing covering protective layer is arranged on the inner side of the outer protective sheath layer, a plurality of optical fiber cores are arranged on the inner side of the grouped sealing covering protective layer, and a water-blocking sealing protective layer is arranged on the outer side of the optical fiber core, an anti-deformation tensile member is arranged at the inner center of the outer protective sheath layer, and a tensile member sealing protective layer is arranged on the outer side of the anti-deformation tensile member.

[0006] Preferably, the inner side of the outer protective sleeve layer is located on the outer side of the group sealing covering protective layer and is filled with sealing glue, and at the same time, the inner side of the sealing glue is located on the outer side of the water-blocking sealing protective layer and is filled with the same sealing glue.

[0007] Preferably, a plurality of the grouped sealed sheathing protective layers are arranged on the inner side of the outer protective sheath layer, and a plurality of optical fiber cores are arranged in each of the plurality of grouped sealed sheathing protective layers.

[0008] Preferably, the water-blocking sealing protective layer, the group sealing coating protective layer and the tensile member sealing protective layer have the same structure.

[0009] Preferably, the inner surface of the outer protective sheath layer is provided with a reinforced wire core inner sheath, and the inner side of the reinforced wire core inner sheath is provided with a reinforced tensile metal wire core.

[0010] Preferably, the array of reinforced tensile metal wire cores is provided with six, and the reinforced tensile metal wire cores are installed corresponding to the anti-deformation tensile parts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The layer-twisted sealing structure can increase the number of optical fiber channels and has an expansion function. By coating the optical fiber with a sealing layer, the optical fiber's external dimensions and mechanical strength are increased, and the bonding effect between the optical fiber's outer coating and the sealing glue is changed, making it easier to process the layer-twisted structure. A new type of non-curing, non-vulcanizing, soft sealant is used for sealing and filling during the molding process in various environments, replacing the original curing hard filling sealant. While ensuring the sealing effect, it eliminates the internal structural stress and does not damage the optical fiber.

[0013] (2) A steel wire rope sealing structure is used and placed in the center of the optical cable product. At the same time, a reinforced tensile metal core is set on the inner side of the outer protective sheath, corresponding to the tensile member sealing protective layer. Through the action of the inner and outer double tensile deformation structures, the overall tensile resistance of the optical cable is better improved, and the force is ensured to be uniform under stress, without affecting the stability of optical signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the outer protective sheath of the utility model;

[0016] In the figure: 100, optical fiber core; 101, water-blocking sealing protective layer; 102, group sealing coating protective layer; 103, sealing glue; 104, anti-deformation tensile member; 105, tensile member sealing protective layer; 106, outer protective sheath layer; 107, reinforced core inner sheath; 108, reinforced tensile metal core. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example 1

[0019] See also Figure 1 and Figure 2The utility model provides a technical solution: optical fiber communication has become an important choice for application in the field of modern underwater equipment due to its characteristics of stable signal, good anti-interference, large amount of transmitted data, high confidentiality, long transmission distance, small space occupation, low power consumption, etc., especially in the field of underwater detection and underwater communication, its advantages are more obvious than traditional communication cables. A longitudinal watertight cabin outer multi-core optical cable comprises an outer protective sheath layer 106, a grouped sealed sheath protective layer 102 is arranged on the inner side of the outer protective sheath layer 106, a plurality of optical fiber cores 100 are arranged on the inner side of the grouped sealed sheath protective layer 102, thereby forming a multi-core structure, and the outer side of the optical fiber core 100 is provided with a water-blocking sealed protective layer 101, an anti-deformation tensile member 104 is arranged at the inner center of the outer protective sheath layer 106, and a tensile member sealing protective layer 105 is arranged on the outer side of the anti-deformation tensile member 104. When the application is used The multi-core optical cable requested in the application has high-strength tensile strength and 6.5MPa longitudinal watertight function while meeting the multi-core optical signal transmission function. The outer sheath material can meet the long-term use in the marine environment. The optical fiber core 100 adopts high-performance optical fiber as the optical signal transmission unit, and the outer surface of the optical fiber core 100 adopts a watertight medium coating structure, which is coated with a water-blocking sealing protective layer 101. The multi-core optical fiber adopts a layer-twisted structure, and is simultaneously injected with sealing glue 103 and coated with a group sealing coating protective layer 102. At the same time, high-strength steel wire is used as a tensile member inside the optical cable, and is coated with a tensile member sealing protective layer 105. The group sealing coating protective layer 102 adopts a 150℃ grade, hydrolysis-resistant, high chemical stability, and vulcanizable crimping polyurethane sheath. While meeting the product functions, it solves the actual problem that the rubber material sheath of the original traditional watertight cable absorbs water, expands, and deforms after being soaked in water for a long time.

[0020] Specifically, the inner side of the outer protective sleeve layer 106 is located on the outer side of the grouped sealing coating protective layer 102 and is filled with sealing glue 103. At the same time, the inner side of the sealing glue 103 is located on the outer side of the water-blocking sealing protective layer 101 and is filled with the same sealing glue 103. The sealing glue 103 is composed of non-vulcanized, non-curing glue. Through the action of the sealing glue 103, the sealing effect is ensured while the optical fiber is not damaged. A plurality of grouped sealing coating protective layers 102 are arranged on the inner side of the outer protective sleeve layer 106, and a plurality of grouped sealing coating protective layers 102 are each provided with a plurality of optical fiber cores 100. While forming a multi-core, mutual interference between the plurality of optical fiber cores 100 can be avoided, thereby better connecting and using. The water-blocking sealing protective layer 101, the grouped sealing coating protective layer 102 and the tensile member sealing protective layer 105 have the same structure, and are all composed of an optical fiber outer watertight medium coating and an outer coating water-blocking sealing layer.

[0021] Example 2

[0022] See also Figure 1 and Figure 2The utility model provides a technical solution: a longitudinal multi-core optical cable outside a watertight cabin, the inner surface of an outer protective sheath layer 106 is provided with an integrated reinforcing wire core inner sheath 107, the inner side of the reinforcing wire core inner sheath 107 is provided with a reinforcing tensile metal wire core 108, and the array of the reinforcing tensile metal wire core 108 is provided with six, and the reinforcing tensile metal wire core 108 is installed corresponding to the anti-deformation tensile member 104, and the anti-deformation tensile member 104 is twisted by multiple strands of steel wire, and the reinforcing tensile metal wire core 108 is a single strand of steel wire, and the anti-deformation tensile member 104 and the reinforcing tensile metal wire core 108 form a double tensile structure, which is used to improve the overall tensile resistance of the optical cable, ensure uniform force during use, avoid deformation of the optical cable after being pulled, thereby avoiding the stability of optical signal transmission being affected, and improving the practicality of the optical cable.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A longitudinal watertight multi-core optical cable outside a cabin, characterized in that: The invention comprises an outer protective sheath layer (106), wherein a grouped sealed sheath protective layer (102) is arranged on the inner side of the outer protective sheath layer (106), a plurality of optical fiber cores (100) are arranged on the inner side of the grouped sealed sheath protective layer (102), and a water-blocking sealed protective layer (101) is arranged on the outer side of the optical fiber core (100), an anti-deformation tensile member (104) is arranged at the inner center of the outer protective sheath layer (106), and a tensile member sealing protective layer (105) is arranged on the outer side of the anti-deformation tensile member (104).

2. A longitudinal watertight multi-core optical cable outside a cabin according to claim 1, characterized in that: The inner side of the outer protective sleeve layer (106) is located on the outer side of the group sealing coating protective layer (102) and is filled with sealing glue (103), and at the same time, the inner side of the sealing glue (103) is located on the outer side of the water-blocking sealing protective layer (101) and is filled with the same sealing glue (103).

3. A longitudinal watertight multi-core optical cable outside a cabin according to claim 1, characterized in that: A plurality of the grouped sealed sheath protective layers (102) are arranged on the inner side of the outer protective sheath layer (106), and a plurality of optical fiber cores (100) are arranged in each of the plurality of grouped sealed sheath protective layers (102).

4. A longitudinal watertight multi-core optical cable outside a cabin according to claim 1, characterized in that: The water-blocking sealing protective layer (101), the group sealing covering protective layer (102) and the tensile member sealing protective layer (105) have the same structure.

5. The longitudinal watertight multi-core optical cable outside the cabin according to claim 1, characterized in that: The inner surface of the outer protective sheath layer (106) is provided with a reinforced wire core inner sheath (107), and the inner side of the reinforced wire core inner sheath (107) is provided with a reinforced tensile metal wire core (108).

6. A longitudinal watertight multi-core optical cable outside a cabin according to claim 5, characterized in that: The array of the reinforced tensile metal wire cores (108) is provided with six pieces, and the reinforced tensile metal wire cores (108) are installed corresponding to the anti-deformation tensile members (104).

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