An optical fiber receptacle

Abstract

This utility model discloses an optical fiber socket, comprising an insulator, in which a conductor insert and a shield are embedded. The upper end of the conductor insert protrudes above the insulator, and the shield is located below the conductor insert. An optical fiber is also pre-embedded in the insulator. An optical fiber interface is provided on the bottom surface of the insulator, and a positioning hole is provided on the shield. The upper end of the optical fiber is close to the outer wall of the conductor insert, and the lower end of the optical fiber passes through the positioning hole and connects to the optical fiber interface. The beneficial effects of this utility model are: by pre-embedding the optical fiber in the insulator, accurate temperature detection can be achieved, improving safety; and because the optical fiber is positioned by the shield in the insulator, the installation reliability of the optical fiber is improved, and damage to the optical fiber is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cable accessories, and in particular to an inner cone plug-in terminal. Background Technology

[0002] In recent years, with the continuous development of the economy and society, urban electricity consumption has grown rapidly, and the number of newly added transmission lines has also increased year by year. However, due to urban planning, environmental landscape, and line corridor requirements, urban transmission lines are increasingly using cables. Internal tapered pluggable cable terminals, with their features of full insulation, full shielding, compact structure, easy installation, easy operation, reliable operation, and convenient maintenance, are widely used in subways, factories, and coastal and plateau regions, becoming an ideal accessory for 35 kV and below medium-voltage cross-linked cables.

[0003] Existing internal tapered plug-in terminals frequently burn out due to poor conductor contact. Since the internal conductors of the cable plug-in head carry high voltage, conventional thermocouple temperature measurement methods are clearly unsuitable. To prevent and reduce faults caused by excessive temperature rise at the connection points between cables and power distribution equipment, appropriate methods are needed to monitor the temperature of this critical component in real time. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an optical fiber socket to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is: an optical fiber socket, which includes an insulator, in which a conductor insert and a shield are embedded. The upper end of the conductor insert is higher than the insulator, and the shield is located below the conductor insert. An optical fiber is also embedded in the insulator. An optical fiber interface is provided on the bottom surface of the insulator. A positioning hole is provided on the shield. The upper end of the optical fiber is close to the outer wall of the conductor insert, and the lower end of the optical fiber passes through the positioning hole and connects to the optical fiber interface.

[0006] The beneficial effects of this utility model are as follows: By pre-embedding optical fibers in the insulator, the optical fibers monitor the temperature at key locations of the insulator, and then transmit the signals detected by the optical fibers to the temperature detector through an external connector, thereby achieving accurate temperature detection and improving safety; moreover, since the optical fibers are positioned through the shielding in the insulator, the installation reliability of the optical fibers is improved, and damage to the optical fibers is avoided.

[0007] As a further improvement to the above technical solution, the conductor insert includes a cavity, in which a watchband finger mounting position is provided, and the upper end of the optical fiber is close to the watchband finger mounting position. Experimental verification has shown that the highest temperature in pluggable terminals is often found at the watchband finger mounting position; therefore, placing the upper end of the optical fiber close to this position can further improve the accuracy of detection.

[0008] As a further improvement to the above technical solution, the outer wall of the conductor insert is provided with a protrusion, which corresponds to the watchband finger mounting position in the cavity. The distance between the upper end of the optical fiber and the protrusion is 0.6mm to 1.0mm. Although theoretically the closer the optical fiber is to the conductor insert, the better the monitoring effect, being too close to the conductor insert will affect the molding of the insulator, resulting in air bubbles in the insulator during the molding process, which will affect the insulation performance of the terminal.

[0009] As a further improvement to the above technical solution, the shielding component is umbrella-shaped, and the axis of the positioning hole is parallel to the length direction of the optical fiber. The umbrella-shaped shielding component can provide better shielding effect, and the parallelism between the axis of the positioning hole and the length direction of the optical fiber can further improve the installation strength of the optical fiber.

[0010] As a further improvement to the above technical solution, the first end of the shielding component is fixedly connected to the conductor insert, and the last end of the shielding component is close to the optical fiber. The fixed connection between the shielding component and the conductor insert improves the integration of the two components, and the close contact between the last end of the shielding component and the optical fiber further protects the optical fiber.

[0011] As a further improvement to the above technical solution, the insulator is provided with a mounting groove, which is flared outwards and wider at the bottom than at the top. This flared mounting groove allows for a tighter connection between the fiber optic socket and the external stress cone.

[0012] As a further improvement to the above technical solution, the upper end of the shielding component is located above the top of the mounting groove, and the lower end of the shielding component is lower than the top of the mounting groove.

[0013] As a further improvement to the above technical solution, the bottom surface of the insulator is also provided with several mounting screw holes, which are staggered with the optical fiber interface. This staggered arrangement of the optical fiber interface and the mounting screw holes effectively avoids interference between the optical fiber socket and the peripheral device's connector during connection.

[0014] As a further improvement to the above technical solution, the top end of the conductor insert is provided with a threaded mounting hole. The threaded mounting hole on the conductor insert facilitates a reliable conductive connection between the conductor insert and peripheral components.

[0015] As a further improvement to the above technical solution, the insulator is hexagonal pyramidal in shape, with the top being smaller than the bottom. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the fiber optic socket of this utility model; Figure 2 This is a bottom view of the fiber optic socket of this utility model; Figure 3 This is a reference diagram showing the usage status of the fiber optic socket of this utility model.

[0018] Figure label: Insulator 100, fiber optic interface 110, mounting groove 120, mounting screw hole 130, guide sleeve insert 200, cavity 210, threaded mounting hole 220, shield 300, positioning hole 310, fiber optic cable 400 Detailed Implementation The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model. Preferred embodiments of this utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, enabling a person to intuitively and vividly understand each technical feature and overall technical solution of this utility model, but they should not be construed as limiting the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. Furthermore, the various technical features in this invention can be combined interactively without contradicting each other.

[0022] In the construction of power distribution networks, cable terminals are commonly used to connect switches, transformers, and other devices to cables. Research has revealed that cable terminals are frequent points of failure. After prolonged operation, cable terminals are prone to overheating, loosening, and other malfunctions. These issues range from increasing power transmission losses and wasting electrical resources to causing damage to the cable terminals and leading to power outages. Therefore, to ensure the stable operation of the power distribution network, it is necessary to monitor the operating status of cable terminals. Currently, the main method for temperature measurement of cable terminals is to install wireless sensors on their surface to estimate the temperature of the internal conductors. The weakness of this technology is that it cannot accurately measure the actual temperature of the conductors inside the cable connector. Furthermore, when abnormal temperatures are detected, the internal structure of the cable terminal has often already been damaged, significantly impacting power transmission.

[0023] Existing pluggable terminals typically include a socket. Research has shown that the hottest point on the terminal is often located at the corresponding position of the socket. Therefore, this invention provides a socket with a built-in optical fiber cable. By detecting the temperature at a key location on the socket, accurate temperature detection can be achieved, thereby improving the safety of the terminal.

[0024] Specifically, refer to Figures 1-2An optical fiber socket includes an insulator 100, in which a conductor insert 200 and a shield 300 are embedded. An optical fiber cable 400 is also pre-embedded in the insulator 100, and an optical fiber interface 110 is provided on the bottom surface of the insulator 100. The lower end of the optical fiber cable 400 is connected to the optical fiber interface 110. The insulator 100, conductor insert 200, shield 300, and optical fiber cable 400 are integrally formed. The conductor insert 200, shield 300, and optical fiber cable 400 are placed in a specific mold before the insulator is injection molded, and then the insulator 100 is well integrated with the conductor insert 200, shield 300, and optical fiber cable 400 after molding.

[0025] Because the conductor insert 200 needs to be electrically connected to peripheral components, its upper end is higher than the upper end of the insulator 100. The shield 300 is located below the conductor insert 200. Since high temperatures often occur at the conductor insert 200 in the socket, the fiber optic cable 400 needs to be as close to the conductor insert 200 as possible to obtain accurate temperature data. Therefore, the upper end of the fiber optic cable 400 is located near the outer wall of the conductor insert 200, while the lower end of the fiber optic cable 400 needs to connect to the fiber optic interface 110 to transmit the signal detected at the upper end outward through the fiber optic interface 110. Therefore, the length of the fiber optic cable 400 embedded in the insulator 100 needs to be relatively large. Furthermore, the fiber optic cable 400 itself is relatively fragile; during the casting process of the insulator 100, the intended position of the fiber optic cable 400 may change, or even be damaged under the influence of casting pressure. Therefore, this fiber optic socket also includes a positioning hole 310 in the shield 300. The lower end of the fiber optic cable 400 passes through the positioning hole 310 before connecting to the fiber optic interface 110. Since the shield 300 is located between the conductor insert 200 and the fiber optic interface 110, the positioning hole 310 on the shield 300 allows the fiber optic cable 400 to pass through, thus providing positioning and protection for the fiber optic cable and preventing adverse effects on the fiber optic cable 400 during the casting process of the insulator 100.

[0026] As mentioned earlier, to more accurately detect the high temperature of the terminal, the fiber optic cable 400 needs to be placed close to the area of ​​abnormal high temperature. The conductor insert 200 has a cavity 210, to which the external conductor connects. Additionally, a watchband contact is fitted over the external conductor to improve the conductivity between the external conductor and the conductor insert 200. Therefore, the mounting position of the watchband contact in the cavity 210 is a high-temperature-prone area of ​​the entire fiber optic socket, hence the upper end of the fiber optic cable 400 is close to this position.

[0027] To improve the connection strength between the conductor insert 200 and the insulator 100, a plurality of protrusions are provided on the outer wall of the conductor insert 200, wherein at least one of the protrusions corresponds to the watchband finger mounting position in the cavity, and the distance between the upper end of the optical fiber and the protrusion is 0.6mm to 1.0mm. Preferably, in this embodiment, the distance between the upper end of the optical fiber and the protrusion is 0.8mm. Although theoretically, the closer the optical fiber is to the conductor insert, the better the monitoring effect, when the optical fiber is too close to the conductor insert, it will make it difficult for the fluid to pass through when the insulator is being cast, thereby affecting the molding effect of the insulator, causing air bubbles to be generated in the insulator during the molding process, and ultimately affecting the insulation performance of the end product.

[0028] As a further preferred embodiment, the shielding member 300 is umbrella-shaped, and the axis of the positioning hole 310 is parallel to the length direction of the optical fiber 400. The umbrella-shaped shielding member 300, being smaller at the top and larger at the bottom, can achieve a better shielding effect. At the same time, the parallelism between the axis of the positioning hole 310 and the length direction of the optical fiber can increase the contact area between the optical fiber 400 and the shielding member 300, further improving the installation strength of the optical fiber 400.

[0029] As a further preferred embodiment, the first end of the shielding member 300 is fixedly connected to the conductor insert 200, and the last end 320 of the shielding member 300 is close to the optical fiber 400. The last end 320 of the shielding member 300 is vertical, with a different bending angle relative to the main body of the shielding member 300. During production, the shielding member 300 and the conductor insert 200 are first welded together, and then placed into a molding die. This improves the integration of the conductor insert 200 and the shielding member 300. In addition, the positioning hole 310 is located in the middle of the shielding member 300, while the optical fiber interface 110 is located on the outer side of the shielding member 300. After the optical fiber 400 passes through the positioning hole 310, it rests against the last end 320 of the shielding member 300. The last end 320 of the shielding member 300 then adheres tightly to the optical fiber 400, further protecting the optical fiber 400.

[0030] As a further preferred embodiment, the insulator 100 is provided with a mounting groove 120, which is flared in shape, wider at the bottom than at the top. The flared shape of the mounting groove allows for a tighter connection between the fiber optic socket and the external stress cone.

[0031] As a further preferred embodiment, the upper end of the shielding member 300 is located above the top of the mounting groove 120, and the lower end of the shielding member 300 is lower than the top of the mounting groove 120. That is, at least a portion of the space in the mounting groove 120 is located within the space enclosed by the shielding member 300, thereby improving the shielding effect of the shielding member 300.

[0032] See Figure 2 As a further preferred embodiment, the bottom surface of the insulator 100 is also provided with a plurality of mounting screw holes 130, which are staggered from the optical fiber interface 110. The staggered distribution of the optical fiber interface 110 and the mounting screw holes 130 can effectively avoid interference between the optical fiber socket and the peripheral device connector during connection.

[0033] As a further preferred embodiment, the conductor insert 200 has a threaded mounting hole 220 at its top end. The threaded mounting hole 220 on the conductor insert 200 facilitates a reliable conductive connection between the conductor insert and peripheral components.

[0034] As a further preferred embodiment, the insulator 100 is hexagonal pyramidal in shape, with the insulator 100 being smaller at the top and larger at the bottom. See Figure 3 During use, the stress cone 10 of the terminal is inserted into the mounting slot 120 of the fiber optic socket. The conductive contact 20 of the terminal is equipped with a watch chain finger 30, which is located within the cavity 210 of the guide sleeve insert 200. Then, the terminal body is fixed to the fiber optic socket using connecting bolts, and the temperature monitoring plug is inserted into the fiber optic interface 110. During operation, the upper end of the fiber optic cable continuously monitors the temperature of the protrusion of the conductor insert 200 and transmits the monitored signal to the temperature detector through the fiber optic interface 110. When the temperature detector detects an abnormal temperature, it immediately notifies the personnel for timely handling, effectively preventing the terminal from burning out due to high temperature.

[0035] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An optical fiber outlet, characterized by: The device includes an insulator, in which a conductor insert and a shield are embedded. The upper end of the conductor insert protrudes above the insulator, and the shield is located below the conductor insert. An optical fiber is also embedded in the insulator. An optical fiber interface is provided on the bottom surface of the insulator, and a positioning hole is provided on the shield. The upper end of the optical fiber is close to the outer wall of the conductor insert, and the lower end of the optical fiber passes through the positioning hole and connects to the optical fiber interface.

2. The fiber optic outlet of claim 1, wherein: The conductor insert includes a cavity, in which a watch chain finger mounting position is provided, and the upper end of the optical fiber is close to the watch chain finger mounting position.

3. The fiber optic outlet of claim 2, wherein: The outer wall of the conductor insert has a protrusion, which corresponds to the watch chain finger mounting position in the cavity. The distance between the upper end of the optical fiber and the protrusion is 0.6mm-1.0mm.

4. The fiber optic outlet of claim 1, wherein: The shielding component is umbrella-shaped, and the axis of the positioning hole is parallel to the length direction of the optical fiber.

5. The fiber optic outlet of claim 4, wherein: The first end of the shielding component is fixedly connected to the conductor insert, and the last end of the shielding component is close to the optical fiber.

6. The fiber optic socket according to claim 5, characterized in that: The insulator is provided with a mounting groove, which is funnel-shaped with a smaller top and a larger bottom.

7. The fiber optic outlet of claim 6, wherein: The upper end of the shielding component is located above the top of the mounting groove, and the lower end of the shielding component is lower than the top of the mounting groove.

8. The fiber optic outlet of claim 1, wherein: The bottom surface of the insulator is also provided with a number of mounting screw holes, which are staggered with the optical fiber interface.

9. The fiber optic outlet of claim 1, wherein: The conductor insert has a threaded mounting hole at its top.

10. The fiber optic outlet of claim 1, wherein: The insulator is hexagonal pyramidal in shape, with the top being smaller than the bottom.

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