CN217305623U - Mining optical cable and signal connector - Google Patents
Mining optical cable and signal connector Download PDFInfo
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- CN217305623U CN217305623U CN202221717992.6U CN202221717992U CN217305623U CN 217305623 U CN217305623 U CN 217305623U CN 202221717992 U CN202221717992 U CN 202221717992U CN 217305623 U CN217305623 U CN 217305623U
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Abstract
The utility model provides a mining optical cable and signal connector. Mining optical cable includes cable core structure and inoxidizing coating, and the cable core structure includes: an optical fiber unit including a plurality of optical fibers for transmitting optical signals; the spiral armor layer is of a cylindrical structure with a mounting through hole, the optical fiber unit is positioned in the mounting through hole, and the cylindrical structure is formed by spirally winding one or more armor steel wires around the central axis of the mounting through hole; wherein, the inoxidizing coating is located spiral armor's periphery to protect spiral armor and optical fiber unit. The technical scheme of the utility model the relatively poor problem of bending property of mining optical cable among the prior art has been solved.
Description
Technical Field
The utility model relates to a mining communication technology field particularly, relates to a mining optical cable and signal connector.
Background
The interconnection among the control equipment is required to be realized on the premise of coal mine intellectualization, so that the demand on the mining optical cable is increasing day by day, the mining optical cable is used as an interconnection transmission line among the mine equipment, and the equipment can be interconnected, so that the equipment can realize the functions of real-time monitoring on underground temperature, harmful gas and underground vibration underground pressure, remote control of mining pictures and the like, and further realize the purposes of safety, few people and high efficiency in coal mine production.
The commonly-used mining optical cable known by the inventor comprises a plurality of cable core structures and an armor layer stranded on the periphery of the cable core structures, and the cable core structures are provided with loose tubes on the periphery of a plurality of optical fibers, so that the whole weight of the optical cable can be increased, the whole outer diameter of the optical cable is increased, the bending radius of the mining optical cable is large, the bending performance is poor, and the mining optical cable cannot realize quick wiring.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a mining optical cable and signal connector to solve the relatively poor bending property problem of mining optical cables among the prior art.
In order to achieve the above object, the utility model provides a mining optical cable, including cable core structure and inoxidizing coating, the cable core structure includes: an optical fiber unit including a plurality of optical fibers for transmitting optical signals; the spiral armor layer is of a cylindrical structure with a mounting through hole, the optical fiber unit is positioned in the mounting through hole, and the cylindrical structure is formed by spirally winding one or more armor steel wires around the central axis of the mounting through hole; wherein, the inoxidizing coating is located spiral armor's periphery to protect spiral armor and optical fiber unit.
Further, the optical fiber unit further includes a protective jacket located at a periphery of the optical fiber, the protective jacket being for protecting the optical fiber.
Further, the protective sleeve is extruded by a low-smoke halogen-free material.
Further, the optical fiber unit includes a plurality of protective sheaths, and the plurality of protective sheaths are provided corresponding to the plurality of optical fibers.
Furthermore, the mining optical cable further comprises a water blocking piece located in the installation through hole of the spiral armor layer, and the water blocking piece is wrapped on the periphery of the optical fiber unit.
Further, the water blocking member includes a plurality of water blocking yarns wound around the outer circumference of the optical fiber unit, and every two adjacent water blocking yarns are in contact with each other.
Further, the mining optical cable further comprises a reinforcing layer positioned between the spiral armor layer and the protective layer, and the reinforcing layer is used for increasing the tensile property of the mining optical cable.
Furthermore, the reinforcing layer is formed by stranding a plurality of water-blocking aramid fibers.
Further, the protective layer is formed by extrusion molding of a low-smoke halogen-free material; alternatively, the optical fiber is a class B6 optical fiber; or the outer diameter of the spiral armor layer is 1.9mm to 2.3mm, and the thickness of the spiral armor layer is more than or equal to 0.17 mm.
According to the utility model discloses an on the other hand, the utility model provides a signal connector, including above-mentioned mining optical cable and the joint of being connected with the both ends of mining optical cable respectively.
By applying the technical scheme of the utility model, on one hand, for setting the loose tube to form the cable core structure at the periphery of a plurality of optical fibers and then setting the steel wire armor layer at the periphery of a plurality of cable core structures, the optical cable of the embodiment directly forms the spiral armor layer by spirally winding one or a plurality of armored steel wires around the central axis of the installation through hole, thereby reducing the outer diameter of the mining steel cable and further enabling the mining optical cable to have good bending performance; on the other hand, compared with the loose tube arranged on the periphery of the optical fiber and the central tube type armor layer arranged on the periphery of the loose tube (the armor layer is formed by a plurality of steel wires extending along the axial direction of the optical fiber), the spiral armor layer formed by spiral winding is more excellent in bending performance, so that the bending performance of the mining optical cable is improved, the mining optical cable has a rat-proof function and also has excellent bending performance, and rapid wiring is achieved.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a mining optical cable according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
10. an optical fiber unit; 11. an optical fiber; 12. a protective sleeve; 20. a spiral armor layer; 30. a protective layer; 40. a reinforcing layer; 50. a water blocking member; 51. and (3) water-blocking yarn.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, an embodiment of the present invention provides an optical cable for mining. The mining optical cable comprises an optical fibre unit 10, a helical armour layer 20 and a protective layer 30. Wherein the optical fiber unit 10 includes a plurality of optical fibers 11 for transmitting optical signals; the spiral armor layer 20 is a cylindrical structure with a mounting through hole, the optical fiber unit 10 is positioned in the mounting through hole, and the cylindrical structure is formed by spirally winding one or more armor steel wires around the central axis of the mounting through hole; the shield 30 is positioned at the outer circumference of the spiral armor 20 to shield the spiral armor 20 and the optical fiber unit 10.
In the technical scheme, on one hand, compared with the case that the loose tubes are arranged on the peripheries of the optical fibers to form the cable core structure, and then the steel wire armor layers are arranged on the peripheries of the cable core structures, the optical cable of the embodiment is directly spirally wound around the central axis of the installation through hole by one or more armored steel wires to form the spiral armor layer 20, so that the outer diameter of the mining steel cable can be reduced, and the mining optical cable has good bending performance; on the other hand, compared with the loose tube arranged on the periphery of the optical fiber and the central tube type armor layer arranged on the periphery of the loose tube (the armor layer is formed by a plurality of steel wires extending along the axial direction of the optical fiber), the spiral armor layer 20 formed by spiral winding is more excellent in bending performance, so that the bending performance of the mining optical cable is improved, and the mining optical cable has the rat-proof function and also has excellent bending performance, so that rapid wiring is realized.
Preferably, the embodiment of the present invention provides that the armor steel wire is made of 304 stainless steel, which has good corrosion resistance, and the coiled spiral armor layer has excellent lateral pressure resistance.
Preferably, in the embodiment of the present invention, the number of the optical fibers 11 is two, but of course, in an alternative embodiment not shown in the drawings, the number of the optical fibers 11 may also be three or four or five, etc.
Preferably, the mining optical cable of an embodiment of the present invention has a bend radius of less than five times its own diameter.
Preferably, the spiral armor 20 has an outer diameter of 1.9mm to 2.3mm and a thickness (i.e., difference between inner and outer diameters) of 0.17mm or more. This can effectively ensure the rigidity thereof.
As shown in fig. 1, in the embodiment of the present invention, the optical fiber unit 10 further includes a protective sheath 12 located at the periphery of the optical fiber 11, and the protective sheath 12 is used for protecting the optical fiber 11.
Through the arrangement, the optical fiber stripped during the prefabrication of the optical cable can be protected.
Preferably, in an embodiment of the present invention, protective sleeve 12 is extruded from a low smoke zero halogen material (LSZH). Thus, the protective sheath 12 can make the optical cable have flame retardant property, and the protective sheath 12 formed by extrusion can be tightly coated on the periphery of the optical fiber 11, thereby protecting the optical fiber.
Preferably, in an embodiment of the present invention, the outer diameter of the protective sheath 12 is 0.5mm to 0.6 mm.
As shown in fig. 1, in the embodiment of the present invention, the optical fiber unit 10 includes a plurality of protective sheaths 12, and the plurality of protective sheaths 12 are disposed corresponding to the plurality of optical fibers 11. In this way, each optical fiber 11 of the optical fiber unit 10 can be protected by the protective sheath 12.
As shown in fig. 1, in the embodiment of the present invention, the mining optical cable further includes a water blocking member 50 located in the installation through hole of the spiral armor layer 20, and the water blocking member 50 is wrapped around the optical fiber unit 10.
With the above arrangement, the water blocking member 50 can protect the optical fiber from water, so that the possibility that the optical fiber 11 is damaged by moisture in the environment can be reduced.
As shown in fig. 1, in the embodiment of the present invention, the water blocking member 50 includes a plurality of water blocking yarns 51 wound around the periphery of the optical fiber unit 10, and every two adjacent water blocking yarns 51 are in contact with each other. Thus, the water blocking member 50 can have a high linear density, thereby improving the water blocking performance of the water blocking member 50.
Preferably, in an embodiment of the present invention, a plurality of water blocking yarns are arranged in parallel, and then are jointly spirally wound around the periphery of the optical fiber unit 10, wherein every two adjacent water blocking yarns 51 of the plurality of water blocking yarns 51 arranged in parallel contact with each other, so that the water blocking member 50 has a high linear density.
Preferably, the linear density of the water-blocking yarn is more than or equal to 1200 dtex. Thus, the water blocking performance can be effectively guaranteed.
Preferably, in the embodiment of the present invention, the water-blocking yarn 51 is a high-expansion water-blocking yarn, and the expansion rate is greater than or equal to 20ml/g/min, and the expansion rate is greater than or equal to 100 ml/g. This can provide the water blocking member 50 with high water blocking performance.
As shown in fig. 1, in an embodiment of the present invention, the mining optical cable further includes a reinforcing layer 40 located between the spiral armor layer 20 and the armor layer 30, the reinforcing layer 40 being configured to increase tensile strength of the mining optical cable. Thus, the optical cable can bear high-strength tension.
Preferably, in the embodiment of the present invention, the reinforcing layer 40 is formed by twisting a plurality of water-blocking aramids, and the elastic modulus is greater than or equal to 105MPa, and the breaking load is greater than or equal to 2300 MPa. Thus, on the one hand, the tensile properties of the optical cable can be increased; on the other hand, the whole water-blocking performance of the optical cable can be ensured.
Preferably, the linear density of the reinforcing layer 40 is more than or equal to 15800 dtex. Thus, the water resistance and the tensile property can be effectively guaranteed.
Preferably, in the embodiment of the present invention, the protective layer 30 is formed by extruding a low smoke zero halogen material. This can improve the flame retardancy of the optical cable.
In one embodiment, the protective layer 30 is preferably made of a mold-resistant high-flame-retardant low-smoke halogen-free polyolefin material, and the light transmittance of the material during combustion is greater than or equal to 60%, and the discharge amount of halogen acid gas is less than or equal to 0.5%, so that the optical cable has flame retardant performance, and also has mold-resistant performance, and the influence of mold generated in a dark and humid environment underground on the optical cable can be reduced.
Further, the protective layer 30 is made of the mildew-resistant high-flame-retardant low-smoke halogen-free polyolefin material, so that the optical cable can pass a C-type bundled combustion test integrally.
Preferably, the utility model discloses an embodiment, inoxidizing coating 30 adopts crowded tubular mould extrusion molding to form, like this when prefabricating the optical cable, can easily peel off inoxidizing coating 30 to the prefabricated use of the technical staff of being convenient for.
Specifically, in the embodiment of the present invention, the protection layers 30 at the two ends of the optical cable are stripped to expose the optical fiber unit 10, so that the optical fiber unit can be directly prefabricated into the end portion capable of being connected with the joint, thereby realizing the rapid interconnection between the devices.
Preferably, the thickness of the protective layer 30 is 0.8mm or more. In this way, the structure in the protective layer can be effectively protected.
Preferably, in the embodiment of the present invention, the optical fiber 11 is a B6 type optical fiber. The optical fiber has good bending performance, so that the optical cable has good bending performance, and the optical cable is suitable for complex environments such as mines.
In one embodiment, the optical fiber 11 is preferably a bending insensitive G657a2 single mode optical fiber, which has excellent macrobending performance and is suitable for complex environments under mines.
It should be noted that the mining optical cable of the embodiment of the present invention integrally adopts a full-dry structure (i.e. the water-blocking mode adopts a mode without oil charge) to achieve the purpose of cleaning and environmental protection.
Preferably, the external diameter of the mining optical cable is 4.7mm to 5.1mm, so that the aim of small volume is fulfilled.
An embodiment of the utility model provides a signal connector. The signal connector comprises the mining optical cable and connectors respectively connected with two ends of the mining optical cable. The signal connector has all the advantages of the mining optical cable, and the description is omitted here.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: on one hand, compared with the cable core structure formed by arranging the loose tubes at the peripheries of the optical fibers and then arranging the steel wire armoring layers at the peripheries of the cable core structures, the optical cable of the embodiment is directly spirally wound around the central axis of the installation through hole by one or more armored steel wires to form the spiral armoring layer, so that the outer diameter of the mining steel cable can be reduced, and the mining optical cable has good bending performance; on the other hand, compared with the loose tube arranged on the periphery of the optical fiber and the central tube type armor layer arranged on the periphery of the loose tube (the armor layer is formed by a plurality of steel wires extending along the axial direction of the optical fiber), the spiral armor layer formed by spiral winding is more excellent in bending performance, so that the bending performance of the mining optical cable is improved, the mining optical cable has a rat-proof function and also has excellent bending performance, and rapid wiring is achieved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A mining optical cable, comprising a core structure and a protective layer (30), the core structure comprising:
an optical fiber unit (10) comprising a plurality of optical fibers (11) for transmitting optical signals;
the spiral armor layer (20) is of a cylindrical structure with a mounting through hole, the optical fiber unit (10) is positioned in the mounting through hole, and the cylindrical structure is formed by spirally winding one or more armor steel wires around the central axis of the mounting through hole;
wherein a shield layer (30) is located at the outer periphery of the spiral armor layer (20) to shield the spiral armor layer (20) and the optical fiber unit (10).
2. A mining optical cable according to claim 1, characterised in that the optical fibre unit (10) further comprises a protective sheath (12) at the periphery of the optical fibres (11), the protective sheath (12) being for protecting the optical fibres (11).
3. A mining optical cable according to claim 2, characterized in that the protective sheath (12) is extruded from a low smoke zero halogen material.
4. A mining optical cable according to claim 2, characterized in that the optical fibre unit (10) comprises a plurality of protective sheaths (12), a plurality of protective sheaths (12) being arranged in correspondence with a plurality of the optical fibres (11).
5. The mining optical cable according to any one of claims 1 to 4, further comprising a water-blocking member (50) located within the mounting through-hole of the helical armour layer (20), the water-blocking member (50) being wrapped around the circumference of the optical fibre unit (10).
6. The mining optical cable according to claim 5, wherein the water blocking member (50) includes a plurality of water blocking yarns (51) wound around the outer circumference of the optical fiber unit (10), and every adjacent two of the water blocking yarns (51) are in contact with each other.
7. The mining optical cable of any of claims 1 to 4, further comprising a reinforcing layer (40) located between the helical armour layer (20) and the protective layer (30), the reinforcing layer (40) being for increasing the tensile properties of the mining optical cable.
8. The mining optical cable of claim 7, wherein the reinforcing layer (40) is stranded from a plurality of water-blocking aramid fibers.
9. The mining optical cable according to any of claims 1 to 4, characterized in that said protective layer (30) is extruded from a low smoke zero halogen material; alternatively, the optical fiber (11) is a class B6 optical fiber; or the outer diameter of the spiral armor layer (20) is 1.9 mm-2.3 mm, and the thickness of the spiral armor layer is more than or equal to 0.17 mm.
10. A signal connector comprising a mining optical cable according to any one of claims 1 to 9 and a splice connected to each end of the mining optical cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221717992.6U CN217305623U (en) | 2022-07-06 | 2022-07-06 | Mining optical cable and signal connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221717992.6U CN217305623U (en) | 2022-07-06 | 2022-07-06 | Mining optical cable and signal connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217305623U true CN217305623U (en) | 2022-08-26 |
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ID=82919822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221717992.6U Active CN217305623U (en) | 2022-07-06 | 2022-07-06 | Mining optical cable and signal connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217305623U (en) |
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2022
- 2022-07-06 CN CN202221717992.6U patent/CN217305623U/en active Active
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