Optical fiber composite overhead ground wire with prefabricated terminal

Abstract

The optical fiber composite overhead ground wire comprises an OPGW, an optical unit, an optical fiber, an optical fiber protection tube, a tail fiber, a plug, an inner protection sleeve, an outer protection sleeve and a protection cap, one end of the outer protection sleeve is tightly wrapped on the outer surface of the OPGW, the inner protection sleeve is arranged in the outer protection sleeve, and the other end of the outer protection sleeve is sealed by the protection cap. An optical unit, an optical fiber, an optical fiber protection tube, a tail fiber and a plug are sequentially wrapped in the inner protection sleeve, the two ends of the optical unit are connected with the OPGW and the optical fiber respectively, the optical fiber is connected with the tail fiber through the optical fiber protection tube, the end portion of the tail fiber is connected with the plug, in the production stage, the optical fiber and the tail fiber in the OPGW are connected in advance, the tail fiber is a short optical fiber connection line, and the optical fiber connection line is connected with the optical fiber protection tube. One end is connected with an optical fiber in the OPGW, the other end is provided with a prefabricated terminal, the prefabricated terminal is an interface part which is specially designed and processed, and optical fiber butt joint between optical cables can be realized only through a special splice closure.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber and cable technology, and in particular to an optical fiber composite overhead ground wire with prefabricated terminals. Background Technology

[0002] After the fiber optic composite overhead ground wire (OPGW) is installed, professional fusion splicing technicians are required to perform on-site fiber optic splicing operations using specialized tools such as fusion splicers. If the work is hampered by harsh working conditions or weather, it can be difficult to perform the splicing work in a timely manner, thus affecting the operation of the entire line.

[0003] To address the aforementioned technical shortcomings, developing a fiber optic composite overhead ground wire with prefabricated terminals has become a technical problem that needs to be solved in the industry. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an optical fiber composite overhead ground wire with prefabricated terminals.

[0005] The fiber optic composite overhead ground wire with prefabricated terminals provided by this utility model adopts the following technical solution:

[0006] An optical fiber composite overhead ground wire with prefabricated terminals includes an OPGW, an optical unit, an optical fiber, an optical fiber protection tube, a pigtail, a plug, an inner protective sleeve, an outer protective sleeve, and a protective cap. One end of the outer protective sleeve tightly covers the outer surface of the OPGW. The inner protective sleeve is placed inside the outer protective sleeve, and the other end of the outer protective sleeve is sealed by the protective cap. The inner protective sleeve sequentially encloses the optical unit, the optical fiber, the optical fiber protection tube, the pigtail, and the plug. The two ends of the optical unit are respectively connected to the OPGW and the optical fiber. The optical fiber and the pigtail are connected through the optical fiber protection tube, and the end of the pigtail is connected to the plug.

[0007] Preferably, the optical units are made of stainless steel and there are 1 to 3 units.

[0008] Preferably, the optical unit contains multiple optical fibers.

[0009] Preferably, the optical fiber and the pigtail are connected by heat fusion, and the connection point is protected by the optical fiber protection tube by heat shrinking. The number of pigtails is the same as the number of optical fibers. The optical fiber, optical fiber protection tube, pigtail and plug are arranged in a spiral shape inside the inner protective sleeve.

[0010] Preferably, the interface type of the plug is one or a combination of FC, SC, ST, and LC.

[0011] Preferably, the inner protective sleeve is made of polyethylene, polyvinyl chloride, or polypropylene.

[0012] Preferably, the outer protective sleeve is made of threaded steel armored high-density polyethylene corrugated pipe.

[0013] Preferably, the protective cap is made of polyethylene, polyvinyl chloride, or polypropylene, and is threaded, and is tightly fitted onto the outside of the outer protective sleeve.

[0014] In summary, this utility model has at least one of the following beneficial technical effects:

[0015] 1. During the production stage, the optical fibers and pigtails in the OPGW are pre-connected. The pigtails are short optical fiber connectors, one end of which connects to the optical fiber in the OPGW, and the other end has a pre-made terminal. The pre-made terminal is a specially designed and processed interface component with a standardized shape and specifications, which can achieve fast and accurate docking. After the OPGW is installed, the optical fibers between the optical cables can be docked through a special splice box.

[0016] 2. The optical fiber, optical fiber protection tube, pigtail, and plug are arranged in a spiral pattern inside the inner protective sleeve. This layout can reasonably accommodate these components in a limited space, effectively saving space in the inner protective sleeve. Compared with straight or other disordered arrangements, the spiral arrangement is more compact, and the spiral structure has a certain degree of elasticity and flexibility, which can play a role in buffering and shock absorption to a certain extent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a fiber optic composite overhead ground wire with prefabricated terminals.

[0018] Explanation of reference numerals in the attached diagram: 1. OPGW; 2. Optical unit; 3. Optical fiber; 4. Optical fiber protection tube; 5. Pigtail; 6. Plug; 7. Inner protective sleeve; 8. Outer protective sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] This utility model discloses an optical fiber composite overhead ground wire with prefabricated terminals. (Refer to...) Figure 1 An optical fiber composite overhead ground wire with prefabricated terminals includes an OPGW1, an optical unit 2, an optical fiber 3, a protective tube for the optical fiber 3, a pigtail 5, a plug 6, an inner protective sleeve 7, an outer protective sleeve 8, and a protective cap. One end of the outer protective sleeve 8 is tightly wrapped around the outer surface of the OPGW1. The inner protective sleeve 7 is placed inside the outer protective sleeve 8, and the other end of the outer protective sleeve 8 is sealed by the protective cap. The inner protective sleeve 7 sequentially encloses the optical unit 2, the optical fiber 3, the protective tube for the optical fiber 3, the pigtail 5, and the plug 6. The two ends of the optical unit 2 are connected to the OPGW1 and the optical fiber 3, respectively. The optical fiber 3 and the pigtail 5 are connected through the protective tube for the optical fiber 3. The end of the pigtail 5 is connected to the plug 6. This design... During the production stage, fiber 3 and pigtail 5 in the OPGW are pre-connected. Pigtail 5 is a short fiber 3 connector, with one end connected to fiber 3 in the OPGW and the other end equipped with a prefabricated terminal. The prefabricated terminal is a specially designed and processed interface component with a standardized shape and specifications, enabling fast and accurate connection. After the OPGW is installed, fiber 3 connections between optical cables can be achieved simply by using a dedicated splice box. The dedicated splice box is a device specifically designed for this type of prefabricated terminal connection. It has a specific internal structure and device that provides a stable and reliable environment for the connection of prefabricated terminals.

[0023] During the splicing process, the pigtail 5 with pre-fabricated terminals is inserted into the corresponding interface inside the dedicated splice box. The mechanical structure and optical alignment device inside the splice box ensure accurate alignment of the pre-fabricated terminals of different OPGWs, achieving a reliable connection. This connection method avoids the reliance on complex equipment and skilled technicians required for traditional field splicing, significantly improving the efficiency of fiber optic splicing.

[0024] The optical unit 2 is made of stainless steel and consists of 1 to 3 fibers. Each optical unit 2 contains multiple optical fibers 3. The optical fibers 3 and pigtails 5 are connected by thermal fusion, and the connection point is protected by a heat-shrink tube for the optical fibers 3. The number of pigtails 5 is the same as the number of optical fibers 3. The optical fibers 3, the protective tubes for the optical fibers 3, the pigtails 5, and the plugs 6 are arranged in a spiral pattern inside the inner protective sleeve 7. This arrangement allows for the efficient use of these components within a limited space, effectively saving space in the inner protective sleeve 7. Compared to linear or other disordered arrangements, the spiral arrangement is more compact, and the spiral structure has a certain degree of elasticity and flexibility, which can provide a certain degree of cushioning and shock absorption. When the optical cable is subjected to external vibration or impact, the spirally arranged components can absorb some energy through their own deformation, reducing the direct impact on the optical fibers 3 and pigtails 5.

[0025] In this utility model, the plug 6 has an interface type of FC, SC, ST, LC or one or more combinations thereof, the inner protective sleeve 7 is made of polyethylene, polyvinyl chloride or polypropylene, the outer protective sleeve 8 is made of threaded steel armor high-density polyethylene corrugated pipe, and the protective cap is made of polyethylene, polyvinyl chloride or polypropylene, and is threaded, with the protective cap tightly fitted on the outside of the outer protective sleeve 8.

[0026] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A fiber optic composite overhead ground wire with preformed terminals, characterized by: The utility model relates to an OPGW (1), an optical unit (2), optical fibers (3), a protective tube for the optical fibers (3), a pigtail (5), a plug (6), an inner protective sleeve (7), an outer protective sleeve (8), and a protective cap, one end of the outer protective sleeve (8) tightly covers the outer surface of the OPGW (1), the inner protective sleeve (7) is placed inside the outer protective sleeve (8), the other end of the outer protective sleeve (8) is sealed with the protective cap, the inner protective sleeve (7) sequentially covers the optical unit (2), the optical fibers (3), the protective tube for the optical fibers (3), the pigtail (5), and the plug (6) from inside to outside, the two ends of the optical unit (2) are connected to the OPGW (1) and the optical fibers (3) respectively, the optical fibers (3) are connected to the pigtail (5) through the protective tube for the optical fibers (3), and the end of the pigtail (5) is connected to the plug (6).

2. The fiber optic composite overhead ground wire with preformed terminal of claim 1, wherein: The optical unit (2) is made of stainless steel, and the number of the optical unit (2) is 1-3.

3. The fiber optic composite overhead ground wire with preformed terminal of claim 1, wherein: The optical unit (2) contains a plurality of optical fibers (3).

4. The fiber optic composite overhead ground wire with preformed terminal of claim 1, wherein: The optical fibers (3) and the pigtail (5) are connected by hot melting, the connection part is protected by heat shrinkage of the protective tube for the optical fibers (3), the number of the pigtail (5) is the same as that of the optical fibers (3), and the optical fibers (3), the protective tube for the optical fibers (3), the pigtail (5), and the plug (6) are sequentially and spirally placed inside the inner protective sleeve (7).

5. The fiber optic composite overhead ground wire with preformed termination of claim 1, wherein: The plug (6) is of one or more combinations of FC, SC, ST, and LC.

6. The fiber optic composite overhead ground wire with preformed termination of claim 1, wherein: The inner protective sleeve (7) is made of polyethylene, polyvinyl chloride, or polypropylene.

7. The fiber optic composite overhead ground wire with preformed termination of claim 1, wherein: The outer protective sleeve (8) is made of high-density polyethylene corrugated pipe with a threaded steel armor.

8. The fiber optic composite overhead ground wire with preformed termination of claim 1, wherein: The protective cap is made of polyethylene, polyvinyl chloride, or polypropylene, and is in a threaded shape, and the protective cap is tightly sleeved on the outside of the outer protective sleeve (8).

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