A sealing tool for optical fiber cores

Abstract

The utility model relates to the technical field of optical fiber experiment, provide a kind of sealing tool for optical fiber core wire, for with the cooperation of connecting cylinder on experimental equipment, to realize the sealing of optical fiber core wire, including: sealing cylinder, the inside of sealing cylinder is formed with the central hole for the optical fiber core wire passes, the inside of sealing cylinder is filled with epoxy resin, the outer circumferential surface of sealing cylinder is opened with the central hole and is communicated with the perfusion hole;Two fixed blocks, two the fixed block is respectively arranged in the both ends of sealing cylinder, for fixing the optical fiber outer sheath of optical fiber core wire both ends;Fastening base, the fastening base is sealedly connected with the connecting cylinder body, the fastening base is also sealedly connected with the sealing cylinder.The utility model provides a kind of sealing tool for optical fiber core wire, structure is small and exquisite, vacuum sealing is good, stability is high and installation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber experimental technology, specifically to a sealing fixture for optical fiber core wires. Background Technology

[0002] In fiber optic-related vacuum, high-temperature, and high-pressure experiments, the airtightness of the fiber optic connection is crucial for ensuring the smooth progress of the experiment. In existing technologies, a natural cavity exists between the fiber optic outer sheath and the fiber core, resulting in insufficient sealing and failing to meet the required vacuum standards. Furthermore, the experimental setup requires on-site fabrication of a cavity sealing structure between the fiber optic outer sheath and the fiber core. This process is cumbersome, time-consuming, and the stability of the on-site fabricated sealing structure is poor, easily affected by improper installation, significantly slowing down the experimental progress.

[0003] To address the issues of insufficient sealing performance, low on-site installation efficiency, and poor stability in existing technologies, there is an urgent need to design a compact, highly stable, and easy-to-install fiber optic core sealing fixture to meet the needs of experimental scenarios. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a sealing fixture for optical fiber cores that is compact in structure, has good vacuum sealing performance, high stability, and is easy to install.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing fixture for optical fiber cores, used to cooperate with a connecting cylinder on experimental equipment to achieve sealing of the optical fiber cores, comprising:

[0006] A sealing cylinder has a central hole formed inside for the optical fiber core to pass through, the interior of the sealing cylinder is filled with epoxy resin, and an injection hole communicating with the central hole is opened on the outer peripheral surface of the sealing cylinder;

[0007] Two fixing blocks are respectively disposed at both ends of the sealing cylinder for fixing the outer sheath of the optical fiber at both ends of the optical fiber core.

[0008] A fastening base is provided, which is sealed to the connecting cylinder and also sealed to the sealing cylinder.

[0009] Furthermore, the fastening base is threadedly connected to the connecting cylinder, and a first sealing ring is provided between the fastening base and the connecting cylinder.

[0010] Furthermore, a fastening nut is provided above the fastening base, the fastening nut is threadedly connected to the sealing cylinder, and a second sealing ring is provided between the fastening base and the sealing cylinder.

[0011] Furthermore, the fastening base has a through limiting hole, and the upper end of the sealing cylinder has a limiting part that is adapted to the limiting hole.

[0012] Furthermore, the fixing block and the sealing cylinder maintain a seal.

[0013] Furthermore, the epoxy resin is a 6308 two-component room temperature curing potting epoxy adhesive.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a sealing fixture for optical fiber cores, which is compact in structure and easy to install. On the one hand, it achieves internal sealing between the optical fiber core and the outer sheath of the optical fiber through epoxy resin; on the other hand, it achieves external sealing between the sealing cylinder and the experimental equipment through the fastening base, solving two vacuum sealing requirements at once. It has excellent sealing effect, high stability, and can meet the sealing requirements of vacuum, high temperature and high pressure experiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0016] Figure 2 A top view of the structure for securing the base;

[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the fastening base;

[0018] Figure 4 This is a front view structural diagram of the sealing cylinder;

[0019] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the sealing cylinder;

[0020] Figure 6 This is a top view of the sealed cylinder structure.

[0021] Figure 7 This is a schematic diagram of the internal cross-sectional structure of the connecting cylinder.

[0022] Reference numerals: 10-Connecting cylinder, 11-Annular groove, 20-Sealing cylinder, 21-Injection hole, 22-Limiting part, 30-Fixing block, 40-Fastening base, 41-Limiting hole, 50-Fastening nut, 60-First sealing ring, 70-Second sealing ring, 80-Fiber optic core wire, 81-Fiber optic outer sheath. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In this application, unless otherwise expressly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In the description of this application, it should be understood that the terms "longitudinal", "horizontal", "level", "top", "bottom", "upper", "lower", "inner" and "outer", etc., indicate the orientation or positional relationship 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 do not indicate or imply that the device or element 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.

[0026] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0027] like Figures 1-7 As shown, this utility model provides a sealing fixture for optical fiber core wires, which is used to cooperate with the connecting cylinder 10 of the experimental equipment to achieve sealing of the optical fiber core wire 80. The connecting cylinder 10 of the experimental equipment has internal threads. This fixture includes a sealing cylinder 20, two fixing blocks 30, a fastening base 40, a fastening nut 50, a first sealing ring 60, and a second sealing ring 70.

[0028] In this embodiment, the overall dimensions of the sealing cylinder 20 are 80mm × φ10mm (length × diameter), and an injection hole 21 is provided on the outer peripheral surface of the sealing cylinder 20 near the middle position. A limiting part 22 is formed at the upper end of the sealing cylinder 20, and an external thread is machined on the outer peripheral surface of the sealing cylinder 20 above the limiting part 22.

[0029] The fixing block 30 has a through hole in the center (to fit the outer sheath of the optical fiber 81). The two fixing blocks 30 are fixed to the end faces of the sealing cylinder 20 respectively. Sealant is applied between the fixing blocks 30 and the end faces of the sealing cylinder 20 to ensure a sealed connection between the two.

[0030] A limiting hole 41 is provided at the center of the fastening base 40. The limiting hole 41 is adapted to the limiting part 22. The lower part of the fastening base 40 is machined with an external thread (which is adapted to the internal thread on the connecting cylinder 10 of the experimental equipment). The inner wall of the connecting cylinder 10 is provided with an annular groove 11 corresponding to the position of the fastening base 40. A first sealing ring 60 is placed in the annular groove 11. A second sealing ring 70 is provided between the fastening base 40 and the sealing cylinder 20.

[0031] The specific assembly and usage process of this embodiment is as follows:

[0032] 1. Fiber pretreatment: Take a section of fiber and strip a certain length of the outer sheath 81 at the middle of the fiber to expose the fiber core 80.

[0033] 2. Fiber Optic Insertion and Fixing Block 30 Installation: Pass the processed fiber optic core 80 through the central hole of the sealing cylinder 20, ensuring that the fiber optic core 80 with its outer sheath 81 stripped is completely inside the sealing cylinder 20. The outer sheaths 81 at both ends of the fiber optic core 80 extend to the outer sides of both ends of the sealing cylinder 20, respectively. Fix the two fixing blocks 30 to both ends of the fiber optic core 80, and then fix the two fixing blocks 30 to the end faces of both ends of the sealing cylinder 20.

[0034] 3. Epoxy Resin Infusion and Curing: After mixing components A and B of the epoxy resin (preferably 6308 two-component room temperature curing potting epoxy) in the specified ratio, perform three vacuum degassing treatments at a pressure of 0.1 MPa, each lasting 3-6 minutes. Place the sealing cylinder 20 horizontally and slowly inject epoxy resin into it through the infusion hole 21 until the resin overflows from the infusion hole 21 (ensuring complete filling of the gaps). After infusion, perform a second degassing at a pressure of 0.1 MPa for 5 minutes. When injecting epoxy resin into the sealing cylinder 20, control the appropriate speed to ensure that the epoxy resin evenly coats the optical fiber core 80, avoiding air bubbles and uneven stress distribution. Strictly control the curing temperature and time to ensure that the epoxy resin is fully cured and its performance is stable.

[0035] 4. Assembly with connecting cylinder 10: Pass the sealing cylinder 20 through the interior of the connecting cylinder 10, and tighten the fastening base 40 at the upper end of the connecting cylinder 10 until the first sealing ring 60 is compressed. Align the limiting part 22 on the sealing cylinder 20 and pass it through the limiting hole 41 on the fastening base 40, and tighten the fastening nut 50 until the second sealing ring 70 is compressed, completing the overall assembly.

[0036] In this utility model, the design of the limiting part 22 and the limiting hole 41 solves the problem of the sealing cylinder 20 rotating during the process of tightening the fastening nut 50 to lock the sealing cylinder 20.

[0037] This utility model has a compact structure and is easy to install. On the one hand, it achieves internal sealing between the optical fiber core 80 and the optical fiber outer sheath 81 through epoxy resin; on the other hand, it achieves external sealing between the sealing cylinder 20 and the experimental equipment through the fastening base 40. It solves the vacuum sealing requirements at one time, with excellent sealing effect and high stability, and can meet the sealing requirements of vacuum, high temperature and high pressure experiments.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sealing fixture for optical fiber core wires, used to mate with a connecting cylinder on experimental equipment to achieve sealing of the optical fiber core wires, characterized in that: include: A sealing cylinder has a central hole formed inside for the optical fiber core to pass through, the interior of the sealing cylinder is filled with epoxy resin, and an injection hole communicating with the central hole is opened on the outer peripheral surface of the sealing cylinder; Two fixing blocks are respectively disposed at both ends of the sealing cylinder for fixing the outer sheath of the optical fiber at both ends of the optical fiber core. A fastening base is provided, which is sealed to the connecting cylinder and also sealed to the sealing cylinder.

2. The sealing fixture for optical fiber core wire according to claim 1, characterized in that: The fastening base is threadedly connected to the connecting cylinder, and a first sealing ring is provided between the fastening base and the connecting cylinder.

3. A sealing fixture for optical fiber cores according to claim 1, characterized in that: A fastening nut is provided above the fastening base, and the fastening nut is threadedly connected to the sealing cylinder. A second sealing ring is provided between the fastening base and the sealing cylinder.

4. A sealing fixture for optical fiber cores according to claim 1, characterized in that: The fastening base has a through limiting hole, and the upper end of the sealing cylinder has a limiting part that is adapted to the limiting hole.

5. A sealing fixture for optical fiber cores according to claim 1, characterized in that: The fixing block and the sealing cylinder maintain a seal.

6. A sealing fixture for optical fiber cores according to claim 1, characterized in that: The epoxy resin is a 6308 two-component room temperature curing potting epoxy.

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