CN210051933U - Central beam tube type armored protective optical cable - Google Patents
Central beam tube type armored protective optical cable Download PDFInfo
- Publication number
- CN210051933U CN210051933U CN201920788706.7U CN201920788706U CN210051933U CN 210051933 U CN210051933 U CN 210051933U CN 201920788706 U CN201920788706 U CN 201920788706U CN 210051933 U CN210051933 U CN 210051933U
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- outer sheath
- cable
- optical cable
- tube type
- polyethylene outer
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Abstract
The utility model discloses a central beam tube formula armor protection optical cable, include: the cable core is a central beam tube type cable core; the cable comprises a cable core, a water blocking tape, an armor layer, a polyethylene outer sheath and a nylon outer sheath, wherein the water blocking tape is coated outside the cable core; and a plurality of reinforcing pieces are arranged in the polyethylene outer sheath. The utility model discloses an armor protection optical cable not only has good protection against rodents performance, has good solar radiation resistance and ageing resistance moreover.
Description
Technical Field
The utility model belongs to the technical field of the optical cable is made, in particular to central beam tube formula armor protection optical cable.
Background
Optical cables used in communications are often damaged by rodents, causing significant economic loss. At present, the mainstream rat-proof optical cable mainly comprises a physical rat-proof method and a chemical rat-proof method. The chemical rat-proof method is to add rat repellent in a certain proportion into the optical cable sheath to achieve the rat-proof effect, such as adding synthetic high-propylene and capsaicin; however, the two chemical substances are affected by high temperature during production, toxic gas is volatilized to cause harm to operators, and pollution is caused to the environment in the using process of the optical cable. Physical ratproof methods are mainly classified into two categories: one is that the optical cable with strength far greater than the rodent biting strength is designed by selecting proper materials according to the rodent biting force to achieve the purpose of resisting the rodent bite, and hard metal steel belts or thin round iron wires and the like are commonly sheathed in the optical cable; the other type is that the stimulation of the rat-proof material is utilized to make rat teeth difficult to bite or be punctured by glass fiber into oral cavity to be difficult to bite without biting the optical cable, thereby achieving the purpose of protecting the cable core of the optical cable, and common glass fiber yarns and glass fiber bands are used. Physical protection from rodents is more practical than chemical protection from environmental and durability perspectives. However, most of the existing physical rat-proof methods are metal composite belts longitudinally wrapped outside cable cores to prevent rats from damaging the cable cores of the cables, but the outer sheaths of the cables still adopt traditional PE sheaths and are easily damaged by the rats, and the metal composite belts can only play a role in rat-proof effect after the outer sheaths are damaged, but the outer sheaths of the cables are damaged at the moment, and the rat-proof effect of the metal composite belts directly exposed in external environments can be caused to fail along with long-term environmental influences such as external temperature, humidity and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a central beam tube formula armor protection optical cable to solve the above-mentioned one or more technical problem who exists. The utility model discloses an armor protection optical cable not only has good protection against rodents performance, has good solar radiation resistance and ageing resistance moreover.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a central tube armored protective optical cable comprising: the cable core is a central beam tube type cable core; the cable comprises a cable core, a water blocking tape, an armor layer, a polyethylene outer sheath and a nylon outer sheath, wherein the water blocking tape is coated outside the cable core; and a plurality of reinforcing pieces are arranged in the polyethylene outer sheath.
The utility model discloses a further improvement lies in, central beam tube cable core includes: an optical fiber oil-filled loose tube and an optical communication unit;
the optical fiber oil-filled loose sleeve is internally filled with a waterproof compound; the optical communication unit is sleeved in the optical fiber oil-filled loose sleeve;
the optical communication unit is a single-mode or multi-mode colored optical cable.
The utility model is further improved in that the water-blocking tape is a dry water-blocking material layer; the thickness of the water blocking tape is 0.1-0.2 mm.
The utility model is further improved in that the water blocking belt is longitudinally wrapped with an armor layer; the armor layer is a stainless steel strip armor layer; the thickness of the armor layer is 0.2-0.3 mm.
The utility model has the further improvement that the armor layer is extruded and wrapped with a polyethylene outer sheath; the polyethylene outer sheath is a black polyethylene outer sheath; the thickness of the polyethylene sheath is 1.5-1.6 mm.
The utility model discloses a further improvement lies in, black polyethylene oversheath is the black polyethylene oversheath that contains the grafting agent.
The utility model is further improved in that the nylon outer sheath is a nylon outer sheath with Shore hardness more than or equal to 67; the nylon outer sheath is 0.2-0.3 mm thick.
The utility model is further improved in that the reinforcing part is a steel wire reinforcing part; the steel wire reinforcement is embedded in the polyethylene outer sheath.
The utility model is further improved in that the number of the steel wire reinforcing pieces is more than 2; the steel wire reinforcements are uniformly distributed around the axis of the polyethylene outer sheath.
The utility model is further improved in that the number of the steel wire reinforcing pieces is 4; the outer diameter of the steel wire reinforcement is 0.5 mm.
Compared with the prior art, the utility model discloses following beneficial effect has:
the outer sheath of the optical cable adopts a structure of combining the polyethylene outer sheath and the nylon outer sheath, so that the surface of the optical cable sheath is hard and smooth; the optical cable of the utility model has good mechanical strength and can be used for overhead laying and pipeline laying; the utility model discloses an optical cable external diameter is little, can reduce construction operation intensity, improves the efficiency of construction. The utility model discloses carry out direct protection from the oversheath, can protect the outmost of good optical cable, improve the protection against rodents effect of optical cable.
Furthermore, the stainless steel strip longitudinal wrapping is adopted, so that the mechanical property of the optical cable can be further improved.
Furthermore, the black polyethylene outer sheath containing the grafting agent is adopted, so that the adhesion between the polyethylene outer sheath and the nylon outer sheath can be improved, and the structure of the optical cable can be more stable.
Furthermore, the nylon outer sheath with the Shore hardness of more than or equal to 67 is adopted, so that the nylon outer sheath has high hardness, good surface smoothness and mechanical property, and excellent performance of preventing the biting of birds and rats.
Furthermore, the thickness of the polyethylene outer sheath can be reduced on the premise of ensuring the mechanical performance of the optical cable by increasing the number of the steel wire reinforcing pieces, so that the outer diameter of the optical cable can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a central beam tube type armored protective optical cable according to an embodiment of the present invention;
in fig. 1, a nylon outer sheath; 2. a black polyethylene outer sheath; 3. a stainless steel tape armor layer; 4. a steel wire reinforcement; 5. a water blocking tape; 6. coloring the optical fiber; 7. an optical fiber oil-filled loose tube.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention; obviously, the described embodiments are some of the embodiments of the present invention. Based on the embodiments disclosed in the present invention, other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Referring to fig. 1, the central beam tube type armored protective optical cable of the present invention is characterized in that a single-mode or multi-mode colored optical fiber 6 is sleeved in an inner filling waterproof compound optical fiber oil filling loose tube 7 made of high-modulus plastic, the cable core adopts a central beam tube type structure, a dry water-blocking material water-blocking tape 5 is placed outside the cable core, a stainless steel-plastic composite tape is longitudinally wrapped outside the water-blocking tape 5 to serve as a stainless steel tape armor layer 3, a black polyethylene outer sheath 2 and a nylon outer sheath 1 are extruded after longitudinal wrapping, and a steel wire reinforcement 4 is embedded in the black polyethylene outer sheath 2. The overall performance of the optical cable meets the requirements in the Chinese communication industry standard YD/T769-2010 central tube type outdoor optical cable for communication. The thickness of the water-blocking tape 5 is 0.1-0.2 mm; the thickness of the stainless steel strip armor layer is 0.2-0.3 mm; the thickness of the black polyethylene sheath 2 is 1.5-1.6 mm; the nylon outer sheath 1 is 0.2-0.3 mm thick; the outer diameter of the wire reinforcement 4 is 0.5 mm.
In order to further improve the adhesion between the black polyethylene outer sheath 2 and the nylon outer sheath 1, a grafting agent needs to be added into the black polyethylene outer sheath 2 in the production process, and the grafting agent and the nylon outer sheath are uniformly mixed to ensure the adhesion with the nylon outer sheath 1. That is, the black polyethylene outer sheath 2 needs to be a black polyethylene outer sheath containing a grafting agent.
The nylon outer sheath 1 is made of nylon 12, and the Shore hardness of the material is greater than or equal to 67. That is, the nylon outer sheath 1 is a nylon outer sheath having a shore hardness of 67 or more.
Preferably, the steel wire reinforcing members 4 are uniformly distributed at four positions of the optical cable, namely, the upper position, the lower position, the left position and the right position, and 4 steel wires are used for replacing 2 steel wires, so that the size of the reinforcing member 4 of the existing steel wire is reduced by 64 percent compared with that of the steel wire with the conventional size. The utility model discloses can reduce black polyethylene oversheath thickness under the prerequisite of guaranteeing optical cable mechanical properties to reach the purpose that reduces the optical cable external diameter.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims of the present invention.
Claims (10)
1. A central beam tube type armored protective optical cable is characterized by comprising: the cable core is a central beam tube type cable core; the cable comprises a cable core and is characterized in that a water blocking tape (5) is coated outside the cable core, an armor layer is coated outside the water blocking tape (5), a polyethylene outer sheath is coated outside the armor layer, and a nylon outer sheath (1) is coated outside the polyethylene outer sheath; and a plurality of reinforcing pieces are arranged in the polyethylene outer sheath.
2. The central beam tube type armored protective optical cable of claim 1, wherein the central beam tube type cable core comprises: an optical fiber oil-filled loose tube (7) and an optical communication unit;
the optical fiber oil-filled loose sleeve (7) is filled with a waterproof compound; the optical communication unit is sleeved in the optical fiber oil-filled loose sleeve (7);
the optical communication unit is a single-mode or multi-mode colored optical fiber (6).
3. The central bundle tube type armored protective optical cable according to claim 1, wherein the water-blocking tape (5) is a dry water-blocking material layer;
the thickness of the water-blocking tape (5) is 0.1-0.2 mm.
4. A central bundle tube type armored protective optical cable according to claim 1, wherein the water-blocking tape (5) is longitudinally wrapped with an armor layer; the armor layer is a stainless steel strip armor layer (3);
the thickness of the armor layer is 0.2-0.3 mm.
5. The central bundle tube type armored protective optical cable of claim 1, wherein the armor layer is extruded with a polyethylene outer sheath; the polyethylene outer sheath is a black polyethylene outer sheath (2);
the thickness of the polyethylene outer sheath is 1.5-1.6 mm.
6. The armored protective optical cable of claim 5, wherein the black polyethylene outer sheath (2) is a black polyethylene outer sheath (2) containing a grafting agent.
7. The central bundle tube type armored protective optical cable according to claim 1, wherein the nylon outer sheath (1) is a nylon outer sheath with Shore hardness of 67 or more;
the nylon outer sheath (1) is 0.2-0.3 mm thick.
8. A central tube armored protective cable according to claim 1, characterized in that said strength members are steel wire strength members (4); the steel wire reinforcement (4) is embedded into the polyethylene outer sheath.
9. A central tube armored protective cable according to claim 8, wherein the number of said steel wire reinforcements (4) is greater than 2;
the steel wire reinforcements (4) are uniformly distributed around the axis of the polyethylene outer sheath.
10. A central tube armored protective cable according to claim 9, wherein the number of said steel wire reinforcing members (4) is 4; the outer diameter of the steel wire reinforcing piece (4) is 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788706.7U CN210051933U (en) | 2019-05-28 | 2019-05-28 | Central beam tube type armored protective optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788706.7U CN210051933U (en) | 2019-05-28 | 2019-05-28 | Central beam tube type armored protective optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210051933U true CN210051933U (en) | 2020-02-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920788706.7U Expired - Fee Related CN210051933U (en) | 2019-05-28 | 2019-05-28 | Central beam tube type armored protective optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210051933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002778A (en) * | 2021-10-26 | 2022-02-01 | 中航光电科技股份有限公司 | Optical rotary connector for vacuum environment |
| CN114068096A (en) * | 2021-11-18 | 2022-02-18 | 国网天津市电力公司 | Novel self-contained oil-filled cable |
| CN114185137A (en) * | 2021-12-08 | 2022-03-15 | 通鼎互联信息股份有限公司 | Anti-loosening rat layer stranded outdoor optical cable with color warning function |
-
2019
- 2019-05-28 CN CN201920788706.7U patent/CN210051933U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002778A (en) * | 2021-10-26 | 2022-02-01 | 中航光电科技股份有限公司 | Optical rotary connector for vacuum environment |
| CN114068096A (en) * | 2021-11-18 | 2022-02-18 | 国网天津市电力公司 | Novel self-contained oil-filled cable |
| CN114185137A (en) * | 2021-12-08 | 2022-03-15 | 通鼎互联信息股份有限公司 | Anti-loosening rat layer stranded outdoor optical cable with color warning function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200211 Termination date: 20210528 |
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| CF01 | Termination of patent right due to non-payment of annual fee |