CN112505869A - Halogen-free low-smoke flame-retardant optical cable for coal mine - Google Patents
Halogen-free low-smoke flame-retardant optical cable for coal mine Download PDFInfo
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- CN112505869A CN112505869A CN202011486242.8A CN202011486242A CN112505869A CN 112505869 A CN112505869 A CN 112505869A CN 202011486242 A CN202011486242 A CN 202011486242A CN 112505869 A CN112505869 A CN 112505869A
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- flame
- retardant
- sleeved
- steel
- optical cable
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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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- 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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
-
- 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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a low-smoke halogen-free flame-retardant optical cable for coal mines, which belongs to the technical field of communication transmission devices and comprises a polyethylene sheath, a steel-plastic composite belt, a flame-retardant conductor sleeve and a reinforcing column, wherein the steel-plastic composite belt is sleeved on the circumferential inner wall of the polyethylene sheath, the flame-retardant conductor sleeve is arranged inside the steel-plastic composite belt, two groups of stranded steel wires can be arranged in the steel-plastic composite belt inside the polyethylene sheath, and a mica insulating belt is sleeved outside the flame-retardant conductor pipe, so that the low-smoke flame-retardant effect of a cable core is increased, the safety is improved, the generation probability of smoke is reduced, the safety and the environmental protection are ensured, an air bag pipe matched with a filling fiber wire and arranged inside the reinforcing column is arranged outside the reinforcing column, the reinforcing column is matched with the stranded steel wires for use, the strength is ensured, the internal buffering capacity is increased, and external pressure is met when the coal mine environment, can relieve itself and ensure the service life of the optical cable.
Description
Technical Field
The invention relates to the technical field of communication transmission devices, in particular to a halogen-free low-smoke flame-retardant optical cable for a coal mine.
Background
Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The optical cable is mainly composed of optical fibers (thin glass filaments like hair), a plastic protective sleeve and a plastic sheath, and metals such as gold, silver, copper and aluminum are not contained in the optical cable.
The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission. Namely: a cable formed by subjecting an optical fiber (optical transmission carrier) to a certain process. The basic structure of the optical cable generally comprises a cable core, a reinforcing steel wire, a filler, a sheath and other parts, and further comprises a waterproof layer, a buffer layer, an insulated metal wire and other components according to requirements.
With the expansion of the application range, the laying of optical fibers is also required in the coal mine environment, and the optical cable is applied to fuel resistance in the use process.
The existing optical cable is matched with a coal mine in use, the flame retardant effect of the optical cable is to be improved, the smoke condition is easily generated in combustion, the safety and the environmental protection performance are poor, the coal mine environment is complex, broken stones often fall off and are extruded, the optical cable is short of a buffering mode, the optical cable cannot be relieved when being subjected to external force, and the service life of the optical cable is shortened.
Disclosure of Invention
The invention aims to provide a halogen-free low-smoke flame-retardant optical cable for a coal mine, which solves the problems that the flame-retardant effect of the existing optical cable proposed in the background technology needs to be improved in the process of being matched with the coal mine, smoke is easily generated in combustion, the safety and the environmental protection are poor, the coal mine environment is complex, broken stones often fall and are extruded, the optical cable is lack of a buffer mode, the optical cable cannot be relieved under the action of external force, and the service life of the optical cable is shortened.
In order to achieve the purpose, the invention provides the following technical scheme: a halogen-free low-smoke flame-retardant optical cable for coal mines comprises a polyethylene sheath, a steel-plastic composite belt, a flame-retardant conductor sleeve and a reinforcing column, wherein the steel-plastic composite belt is sleeved on the inner circumferential wall of the polyethylene sheath, the flame-retardant conductor sleeve is arranged inside the steel-plastic composite belt, the reinforcing column is arranged inside the flame-retardant conductor sleeve, a bag is sleeved on the inner circumferential wall of the steel-plastic composite belt, a main stranded steel wire and a secondary stranded steel wire are sleeved between the steel-plastic composite belt and the bag, the flame-retardant conductor sleeve is sleeved on the inner circumferential wall of the bag, a mica insulating belt is sleeved on the inner circumferential wall of the flame-retardant conductor sleeve, smoke-blocking agent powder is filled in the mica insulating belt, a cable core is sleeved on the inner circumferential wall of the mica insulating belt, the reinforcing column is sleeved on the inner circumferential wall of the cable core, an inner sleeve ring is sleeved on the inner circumferential wall of the reinforcing column, and an air, the number of the air bag pipes is eight, the eight air bag pipes are circularly arrayed by taking the reinforcing column as a central point, a cavity is reserved among the eight air bag pipes, filling fiber yarns are filled in the cavity, and built-in steel wires are sleeved on the circumferential inner wall of the inner lantern ring.
Preferably, an inner sheath is bonded to the circumferential inner wall of the polyethylene sheath, and the diameter of the inner sheath is smaller than the inner diameter of the polyethylene sheath.
Preferably, the mica insulation tape is externally woven with metal wires.
Preferably, the arrangement position of the main stranded steel wire is opposite to the arrangement position of the auxiliary stranded steel wire.
Preferably, the material of the filling fiber yarn is polyurethane elastic fiber.
Preferably, the number of the cable cores is four, and the four cable cores are in a circular array with the flame-retardant conductor tubes as central points.
Preferably, the material of gasbag pipe is the hard rubber tube.
Compared with the prior art, the invention has the beneficial effects that: this kind of there is not steamed low fire-retardant optical cable of cigarette in colliery, combination application through the accessory, can set up two sets of share steel wires in the inside steel-plastic composite band of polyethylene sheath, and cup joint the mica insulating band in the outside of fire-retardant conductor pipe, with the low smoke flame retardant efficiency who increases the cable core, the security promotes, reduce smog and produce the probability, security and feature of environmental protection have been guaranteed, and set up the built-in gasbag pipe of cooperation packing fiber silk in the enhancement post outside, make the cooperation share steel wire of enhancement post use, the proof strength, the internal buffer capacity has been increased, meet external pressure when the colliery environment uses, can self alleviate, the life of optical cable has been guaranteed.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the reinforcing column of the present invention;
fig. 4 is a schematic view of the structure of the air bag tube of the present invention.
In the figure: 100 polyethylene sheath, 110 inner sheath, 200 steel-plastic composite belt, 210 main stranded steel wire, 220 auxiliary stranded steel wire, 230 bag, 300 flame-retardant conductor sheath, 310 mica insulating belt, 320 cable core, 400 reinforcing column, 410 air bag tube, 420 filling fiber wire, 430 inner collar and 440 built-in steel wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a halogen-free low-smoke flame-retardant optical cable for coal mines, which is convenient for flame retardance and smoke resistance through the combined application of accessories, can effectively increase the buffer capacity and improve the safety, and please refer to fig. 1, fig. 2, fig. 3 and fig. 4, and comprises a polyethylene sheath 100, a steel-plastic composite belt 200, a flame-retardant conductor sleeve 300 and a reinforcing column 400;
referring to fig. 1 again, the inner sheath 110 is adhered to the inner circumferential wall of the polyethylene sheath 100, and in particular, the inner sheath 110 is adhered to the inner circumferential wall of the polyethylene sheath 100, and the diameter of the inner sheath 110 is smaller than the inner diameter of the polyethylene sheath 100, which facilitates the effective sleeving;
referring to fig. 1 and 2 again, the steel-plastic composite strip 200 is sleeved on the inner circumferential wall of the polyethylene sheath 100, specifically, the steel-plastic composite strip 200 is sleeved on the inner circumferential wall of the polyethylene sheath 100, the steel-plastic composite strip 200 is sleeved on the inner circumferential wall of the steel-plastic composite strip 200, and the main stranded steel wire 210 and the sub stranded steel wire 220 are sleeved between the steel-plastic composite strip 200 and the bag 230;
referring to fig. 1 and fig. 2 again, the flame-retardant conductor sleeve 300 is combined with the bag 230, specifically, the flame-retardant conductor sleeve 300 is arranged inside the steel-plastic composite tape 200, the flame-retardant conductor sleeve 300 is sleeved on the circumferential inner wall of the bag 230, the mica insulating tape 310, which is sleeved on the circumferential inner wall of the flame-retardant conductor sleeve 300, is filled with smoke suppressant powder inside the mica insulating tape 310, and the cable core 320 is sleeved on the circumferential inner wall of the mica insulating tape 310;
referring to fig. 2 and 3 again, the reinforcement column 400 is combined with the flame-retardant conductor sleeve 300, specifically, the reinforcement column 400 is arranged inside the flame-retardant conductor sleeve 300, the reinforcement column 400 is sleeved on the circumferential inner wall of the cable core 320, the inner sleeve ring 430 is sleeved on the circumferential inner wall of the reinforcement column 400, the air bag tubes 410 are inserted between the reinforcement column 400 and the inner sleeve ring 430, the number of the air bag tubes 410 is eight, the eight air bag tubes 410 are arranged in a circular array with the reinforcement column 400 as a central point, a cavity is reserved between the eight air bag tubes 410, the filling fiber filaments 420 are filled in the cavity, and the built-in steel wires 440 are sleeved on the circumferential inner wall of the inner sleeve ring;
in specific use, the inner sheath 110 is firstly combined in the inner part of the polyethylene sheath 100, the steel-plastic composite belt 200 is sleeved in the inner part of the polyethylene sheath 100, the steel-plastic composite belt 200 is internally provided with a main stranded steel wire 210, a secondary stranded steel wire 220 and a bag 230, and a flame retardant conductor cover 300 carrying a mica insulation tape 310 is installed inside the pack 230, can effectively increase the flame retardance, and the air bag tube 410 and the filling fiber 420 are arranged inside the reinforcing column 400 to be matched with the built-in steel wire 440 for use, thereby enhancing the buffering elasticity, in case of external force, the impact force is buffered by the balloon tube 410 and the filling fiber 420, so as to increase the self buffer force, avoid the pressure from being completely applied on the cable core 320, ensure the strength, increase the internal buffer capacity, when the cable meets external pressure in the coal mine environment, the cable can relieve the external pressure, and the service life of the cable is ensured.
Referring to fig. 1 again, in order to ensure the strength of the mica tape 310 and to increase the flame retardancy, the mica tape 310 is specifically woven with metal wires on the outside.
Referring to fig. 1 again, in order to increase the connection strength of the steel-plastic composite strip 200, specifically, the main stranded wires 210 are disposed at opposite positions to the sub-stranded wires 220.
Referring to fig. 3 again, in order to increase the flame retardancy, the filling fiber 420 is made of polyurethane elastic fiber.
Referring to fig. 1 again, in order to facilitate uniform combination of cable cores 320, specifically, the number of cable cores 320 is four, and the four cable cores 320 are arranged in a circular array with the flame-retardant conductor tube 300 as a central point.
Referring to fig. 3 again, in order to increase the strength of the airbag tube 410, specifically, the airbag tube 410 is made of a hard rubber tube.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. A coal mine halogen-free low-smoke flame-retardant optical cable is characterized in that: the fireproof cable comprises a polyethylene sheath (100), a steel-plastic composite belt (200), a flame-retardant conductor sleeve (300) and a reinforcing column (400), wherein the steel-plastic composite belt (200) is sleeved on the inner circumferential wall of the polyethylene sheath (100), the flame-retardant conductor sleeve (300) is arranged inside the steel-plastic composite belt (200), the reinforcing column (400) is arranged inside the flame-retardant conductor sleeve (300), a wrapping bag (230) is sleeved on the inner circumferential wall of the steel-plastic composite belt (200), a main strand steel wire (210) and an auxiliary strand steel wire (220) are sleeved between the steel-plastic composite belt (200) and the wrapping bag (230), the flame-retardant conductor sleeve (300) is sleeved on the inner circumferential wall of the flame-retardant conductor sleeve (300), a mica insulating belt (310) is sleeved on the inner circumferential wall of the flame-retardant conductor sleeve (300), smoke suppressant powder is filled in the mica insulating belt (310), and a cable core (320) is sleeved on the inner circumferential wall of the mica insulating belt (310), the reinforcing column (400) is sleeved on the inner circumferential wall of the cable core (320), an inner sleeve ring (430) is sleeved on the inner circumferential wall of the reinforcing column (400), air bag tubes (410) are inserted between the reinforcing column (400) and the inner sleeve ring (430), the number of the air bag tubes (410) is eight, the eight air bag tubes (410) take the reinforcing column (400) as a central point circular array, a cavity is reserved between the eight air bag tubes (410), filling fiber filaments (420) are filled in the cavity, and a built-in steel wire (440) is sleeved on the inner circumferential wall of the inner sleeve ring (430).
2. The halogen-free low-smoke flame-retardant optical cable for coal mines according to claim 1, characterized in that: an inner sheath (110) is bonded on the circumferential inner wall of the polyethylene sheath (100), and the diameter of the inner sheath (110) is smaller than the inner diameter of the polyethylene sheath (100).
3. The halogen-free low-smoke flame-retardant optical cable for coal mines according to claim 2, characterized in that: the mica insulation tape (310) is externally braided with metal wires.
4. The halogen-free low-smoke flame-retardant optical cable for coal mines according to claim 3, characterized in that: the arrangement position of the main stranded steel wire (210) is opposite to that of the auxiliary stranded steel wire (220).
5. The halogen-free low-smoke flame-retardant optical cable for coal mines according to claim 4, characterized in that: the filling fiber yarn (420) is made of polyurethane elastic fiber.
6. The halogen-free low-smoke flame-retardant optical cable for coal mines according to claim 5, characterized in that: the number of the cable cores (320) is four, and the four cable cores (320) take the flame-retardant conductor tubes (300) as a central point circular array.
7. The halogen-free low-smoke flame-retardant optical cable for coal mines according to claim 6, characterized in that: the material of gasbag pipe (410) is the hard rubber tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011486242.8A CN112505869A (en) | 2020-12-16 | 2020-12-16 | Halogen-free low-smoke flame-retardant optical cable for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011486242.8A CN112505869A (en) | 2020-12-16 | 2020-12-16 | Halogen-free low-smoke flame-retardant optical cable for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112505869A true CN112505869A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011486242.8A Pending CN112505869A (en) | 2020-12-16 | 2020-12-16 | Halogen-free low-smoke flame-retardant optical cable for coal mine |
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| Country | Link |
|---|---|
| CN (1) | CN112505869A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020197030A1 (en) * | 2001-06-25 | 2002-12-26 | Mcalpine Warren W. | High density fiber optic cable |
| CN103943179A (en) * | 2014-03-14 | 2014-07-23 | 安徽万泰电缆有限公司 | Computer shield cable resistant to high temperature and extrusion |
| CN105842806A (en) * | 2016-06-01 | 2016-08-10 | 江苏永鼎股份有限公司 | High-strength, high-flame retardant and fire-resistant optical cable |
| CN107340580A (en) * | 2017-08-30 | 2017-11-10 | 福建南新电缆有限公司 | A kind of reinforcement type central tube bundle cable |
| CN208547757U (en) * | 2018-08-01 | 2019-02-26 | 常州船用电缆有限责任公司 | A kind of optical cable |
| CN110095846A (en) * | 2019-04-08 | 2019-08-06 | 安徽长荣光纤光缆科技有限公司 | A kind of water-resistant armored anti-torsion optical cable and preparation method thereof |
| CN210072147U (en) * | 2019-03-30 | 2020-02-14 | 苏州源诚恒光电有限公司 | Parallel double-core self-supporting butterfly-shaped optical cable |
| CN210575195U (en) * | 2019-06-26 | 2020-05-19 | 杭州佳能电缆有限公司 | Novel sheathed flame-retardant cable |
| CN211957156U (en) * | 2020-06-22 | 2020-11-17 | 青岛奥帆电线电缆有限公司 | Cable with multilayer leakage protection effect |
-
2020
- 2020-12-16 CN CN202011486242.8A patent/CN112505869A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020197030A1 (en) * | 2001-06-25 | 2002-12-26 | Mcalpine Warren W. | High density fiber optic cable |
| CN103943179A (en) * | 2014-03-14 | 2014-07-23 | 安徽万泰电缆有限公司 | Computer shield cable resistant to high temperature and extrusion |
| CN105842806A (en) * | 2016-06-01 | 2016-08-10 | 江苏永鼎股份有限公司 | High-strength, high-flame retardant and fire-resistant optical cable |
| CN107340580A (en) * | 2017-08-30 | 2017-11-10 | 福建南新电缆有限公司 | A kind of reinforcement type central tube bundle cable |
| CN208547757U (en) * | 2018-08-01 | 2019-02-26 | 常州船用电缆有限责任公司 | A kind of optical cable |
| CN210072147U (en) * | 2019-03-30 | 2020-02-14 | 苏州源诚恒光电有限公司 | Parallel double-core self-supporting butterfly-shaped optical cable |
| CN110095846A (en) * | 2019-04-08 | 2019-08-06 | 安徽长荣光纤光缆科技有限公司 | A kind of water-resistant armored anti-torsion optical cable and preparation method thereof |
| CN210575195U (en) * | 2019-06-26 | 2020-05-19 | 杭州佳能电缆有限公司 | Novel sheathed flame-retardant cable |
| CN211957156U (en) * | 2020-06-22 | 2020-11-17 | 青岛奥帆电线电缆有限公司 | Cable with multilayer leakage protection effect |
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Application publication date: 20210316 |
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| RJ01 | Rejection of invention patent application after publication |