Composite optical fiber assembly for voltage class above 110 kv

Abstract

The invention relates to the technical field of optical fiber communication, in particular to a composite optical fiber assembly for the voltage class of 110 kv or above. The composite optical fiber assembly comprises an optical fiber core and a hollow glass fiber rod, the optical fiber core penetrates through the hollow glass fiber rod, and a gap between the optical fiber core and the hollow glass fiber rod is filled with silica gel. A sheath is formed on the outer surface of the hollow glass fiber rod in a coating mode, aluminum alloy flanges are glued to the two ends of the sheath respectively, glue grooves are formed in the aluminum alloy flanges, one end of each aluminum alloy flange communicates with a glue injection pipe allowing epoxy resin to enter, and the bottom of each glue injection pipe communicates with a return resisting pipe extending into the corresponding glue groove. A first conical rubber sealing plug and a second conical rubber sealing plug are fixedly connected to the outer surface of the optical fiber core and located in the aluminum alloy flange. Multi-layer sealing of silica gel filling, the first conical rubber sealing plug, epoxy resin potting and the second conical rubber sealing plug is adopted, and moisture, dust, corrosive gas and the like in the external environment are effectively prevented from entering the optical fiber assembly.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber communication, in particular to a composite optical fiber component used for voltage levels above 110kv. Background Art

[0002] With the continuous development of society and economy, the requirements of power system for communication technology are increasing day by day. Traditional power communication technology has been difficult to meet the development needs of current power system engineering, especially high-voltage power grid, due to its simple technology, single service mode and small capacity. The stability and safety of high-voltage power grid are directly related to the reliability and continuity of power supply, while the quality of power communication technology directly affects the operation efficiency and management level of power grid. Therefore, it is an urgent need for the power industry to develop an efficient, reliable and large-capacity communication technology. Optical fiber communication technology has quickly become the first choice of the power communication industry with its good insulation, strong anti-interference ability and large communication capacity. Optical fiber communication has extremely high transmission rate and extremely low transmission loss, which can meet the high requirements of high-voltage power grid for information real-time and accuracy. At the same time, optical fiber communication also has good electromagnetic compatibility and will not be affected by electromagnetic interference generated by high-voltage transmission lines, ensuring the stable transmission of communication signals.

[0003] For example, the patent application with the prior art announcement number CN213182138U discloses a fiber composite insulator assembly, including: a composite insulator, an optical fiber inserted in the composite insulator, an optical fiber flange located at the low-voltage end of the composite insulator assembly, and a pressing plate located inside the optical fiber flange and connected to the end of the composite insulator, the gap between the optical fiber and the composite insulator is filled with an organic insulating medium, and the pressing plate is used to prevent the organic insulating medium from leaking out. The application adopts a hanging installation, which is less affected by earthquakes, and is suitable for transmitting optical signals from the high-voltage end to the low-voltage end. It has a simple and lightweight structure, low optical fiber loss, reliable data transmission, and insulation between the high and low voltage ends.

[0004] The above-mentioned prior art attempts to achieve sealing by filling epoxy resin, an organic insulating medium, in the gap between the optical fiber and the composite insulator. However, this method exposes significant problems in practical applications. Specifically, due to its inherent thick characteristics during the filling process, it is often difficult to completely eliminate the bubbles in the epoxy resin, resulting in defects such as bubbles and faults formed inside after curing, and then leakage occurs at the end of the optical fiber, which becomes a common fault point. What is more serious is that the toughness of the epoxy resin is relatively insufficient after condensation, and it is difficult to withstand the challenges of long-term use in extreme outdoor environments such as high temperature, high humidity, alternating climate and high voltage. In such an environment, the sealing interface between the optical fiber and the composite insulator, especially the sealing at the inner hole of the optical fiber and the glass fiber, is very likely to be poor or damaged. Once the seal fails, external factors (such as moisture, dust, dirt, etc.) may invade, which not only affects the quality of optical fiber communication, but also may cause high-voltage breakdown accidents, causing major interference to the operation of the power system, and seriously threatening the safety of personnel and equipment, posing a risk that cannot be ignored. For this reason, the present application proposes a composite optical fiber assembly for voltage levels above 110kv. Summary of the invention

[0005] The object of the present invention is to provide a composite optical fiber assembly for voltage levels above 110kv to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a composite optical fiber component for voltage levels above 110kv, comprising an optical fiber core and a hollow glass fiber rod, the optical fiber core passes through the hollow glass fiber rod, the gap between the optical fiber core and the hollow glass fiber rod is filled with silicone filling, the outer surface of the hollow glass fiber rod is coated with a sheath, and the two ends of the sheath are respectively glued with aluminum alloy flanges, a glue groove is arranged inside the aluminum alloy flange, a plurality of cleaning blocks for cleaning the optical fiber core are arranged in the glue groove, one end of the aluminum alloy flange is connected to a glue injection pipe for epoxy resin to enter, the bottom of the glue injection pipe is connected to a return pipe extending into the glue groove, a compensation component for controlling the mutual movement of a plurality of cleaning blocks is arranged inside the aluminum alloy flange, and a first conical rubber sealing plug and a second conical rubber sealing plug are fixedly connected to the outer surface of the optical fiber core and located inside the aluminum alloy flange.

[0007] Preferably, the compensation assembly includes a plurality of rotating columns rotatably connected to the inside of the aluminum alloy flange, the outer surfaces of the plurality of rotating columns are respectively fixedly connected with second protruding handles, the insides of the plurality of cleaning blocks are respectively fixedly connected with sliding rods slidably connected to the glue grooves, and one end of the plurality of sliding rods is rotatably connected with a movable handle rotatably connected to the plurality of second protruding handles.

[0008] Preferably, a ring disk is rotatably connected inside the aluminum alloy flange, a plurality of pull handles are evenly and fixedly connected to the inner wall of the ring disk, and a first protruding handle rotatably connected to the pull handle is fixedly connected to the outer surfaces of the plurality of rotating columns.

[0009] Preferably, an air receiving cylinder is provided inside the aluminum alloy flange, and a slave piston rod adapted thereto is slidably connected to the top of the air receiving cylinder, an inclined surface is provided inside the ring disk, and a ball slidingly connected to the inclined surface is rotatably connected to the top of the slave piston rod.

[0010] Preferably, the inside of the glue injection tube is fixedly connected to an air cylinder, one end of the air cylinder is slidably connected to an active piston rod adapted thereto, the end of the active piston rod away from the air cylinder is fixedly connected to a piston adapted to the glue injection tube, and the top of the air cylinder is connected to an air pipe that passes through the glue injection tube and connects to the bottom of the air receiving cylinder.

[0011] Preferably, two ends of the plurality of cleaning pressing blocks are respectively fixedly connected with spring sheets, and a groove for fixedly connecting the plurality of spring sheets is provided in the glue groove.

[0012] Preferably, an air relief groove is provided at the top of the glue injection tube, and an air blocking block is arranged in the air relief groove. The two ends of the bottom of the air blocking block are respectively fixedly connected with tension springs fixedly connected to the glue injection tube. The top of the air cylinder is rotatably connected with a resistance handle that can resist the air blocking block, and the piston end of the active piston rod can resist the bottom of the resistance handle.

[0013] Preferably, a return spring for returning the active piston rod is fixedly connected to the interior of the gas delivery cylinder, and one end of the gas delivery cylinder extends to just above the anti-return tube.

[0014] Preferably, a plurality of silicone umbrella skirts are fixedly connected to the outer surface of the sleeve, and equalizing rings are fixedly connected to the glued parts of the two aluminum alloy flanges and the sleeve. A sealing pressure ring is provided inside the aluminum alloy flange and on the outer surface of the second conical rubber sealing plug, and the sealing pressure ring is pressed against the second conical rubber sealing plug by bolts.

[0015] Preferably, the tops of the two aluminum alloy flanges are each provided with a glue injection hole for filling and pouring silica gel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The component adopts multi-layer sealing measures such as silicone filling, first conical rubber sealing plug, epoxy resin potting and second conical rubber sealing plug. This multi-layer sealing not only provides a physical barrier, but also enhances the overall sealing effect through the characteristics of different materials (such as the flexibility of silicone and the hardness of epoxy resin), effectively preventing moisture, dust, corrosive gases in the external environment from entering the interior of the optical fiber component and protecting the optical fiber core from damage. Among them, the soft seal is combined with the hard seal. The silicone filling and rubber sealing plug as the soft sealing layer can adapt to certain deformation and temperature changes to maintain the sealing effect, while the epoxy resin potting provides stronger hardness and durability, further enhancing the reliability of the seal. In a high-pressure environment, good sealing performance is one of the key factors to prevent electrical breakdown. The multi-layer sealing structure can effectively isolate the optical fiber component from the external environment, reduce faults and accidents caused by electrical breakdown, and reduce the erosion and damage of the external environment to the optical fiber core by improving the sealing performance, thereby extending the overall service life of the optical fiber component.

[0018] 2. Before the optical fiber core passes through the hollow glass fiber rod, it will first pass through multiple cleaning blocks. These cleaning blocks can automatically clean the impurities and dirt on the outer surface of the optical fiber core to ensure the cleanliness of the optical fiber core, thereby improving the quality and stability of optical fiber communication. During the epoxy resin filling process, the cleaning blocks can temporarily stay away from the optical fiber core to provide space for the full contact of the epoxy resin. After the epoxy resin solidifies, the cleaning blocks can be reset and fit tightly to the optical fiber core to form an additional protective layer to prevent the optical fiber core from being damaged by the external environment. Through the cooperation of the injection tube and the anti-return tube, and the linkage of the piston and the air block The mechanism effectively reduces the bubbles and faults generated during the epoxy resin filling process. When the epoxy resin gradually fills the aluminum alloy flange, the air inside will be squeezed and discharged through the gap of the injection tube. When the piston in the injection tube moves under pressure, it not only promotes the filling of the epoxy resin, but also drives the air block to move up through the resistance handle to open the exhaust port. This linkage effect makes the filling of epoxy resin and the cleaning process of the optical fiber core closely connected, improving the overall work efficiency. The change in gas pressure in the gas cylinder drives the driven piston rod to move up, and then drives the ring disk to rotate through the interaction between the inclined surface and the ball. This design of converting gas pressure into mechanical transmission not only simplifies the structure but also improves the transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the hollow glass fiber rod and the sheath of the present invention;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the aluminum alloy flange in the present invention;

[0024] Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at B in the middle;

[0026] Figure 8 It is a schematic diagram of the structure of the cleaning briquette in the present invention;

[0027] Fig. 9 It is a schematic diagram of the cross-sectional structure of the cleaning compact in the present invention;

[0028] Fig.10 For the present invention Fig. 9 A magnified schematic diagram of the structure at C in the middle;

[0029] Fig.11 It is a schematic diagram of the structure of the cooperation between a plurality of slide bars and a ring disk in the present invention;

[0030] Fig.12 It is a schematic diagram of the cross-sectional structure of the glue injection tube in the present invention;

[0031] Fig.13 It is a schematic diagram of the cross-sectional structure of the ring disk in the present invention;

[0032] Fig.14 It is a schematic diagram of the structure of the ring disk in the present invention.

[0033] In the figure: 100, optical fiber core; 101, hollow glass fiber rod; 102, silicone filling; 200, sheath; 201, silicone shed; 202, equalizing ring; 203, aluminum alloy flange; 204, glue injection hole; 205, first conical rubber sealing plug; 206, second conical rubber sealing plug; 207, sealing pressure ring; 300, cleaning block; 301, glue injection tube; 302, anti-return tube; 303, piston; 304, Active piston rod; 305, air cylinder; 306, return spring; 307, air pipe; 308, air receiving cylinder; 309, driven piston rod; 310, ring disk; 311, pull handle; 312, rotating column; 313, first protruding handle; 314, second protruding handle; 315, sliding rod; 316, movable handle; 317, reed; 318, inclined plane; 319, ball; 400, air blocking block; 401, tension spring; 402, resistance handle. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1 , Figure 2 as well as Figure 3 The present invention provides a technical solution: a composite optical fiber component for voltage levels above 110kv, comprising an optical fiber core 100 and a hollow glass fiber rod 101, the optical fiber core 100 passes through the hollow glass fiber rod 101, the gap between the optical fiber core 100 and the hollow glass fiber rod 101 is filled with silicone filler 102, the outer surface of the hollow glass fiber rod 101 is coated with a sheath 200, and both ends of the sheath 200 are respectively glued with aluminum alloy flanges 203, a glue groove is provided inside the aluminum alloy flange 203, one end of the aluminum alloy flange 203 is connected to a glue injection tube 301 for epoxy resin to enter, the bottom of the glue injection tube 301 is connected to a return pipe 302 extending into the glue groove, the outer surface of the optical fiber core 100 and located inside the aluminum alloy flange 203 are fixedly connected with a first conical rubber sealing plug 205 and a second conical rubber sealing plug 206.

[0036] It is worth mentioning that the aluminum alloy flange 203 has a threaded hole on the side and a vacuum hole at one end. After the optical fiber core 100 passes through the hollow glass fiber rod 101 and is bonded and formed, the silicone filler 102 is filled at high pressure into the narrow gap between the optical fiber core 100 and the hollow glass fiber rod 101 by vacuum casting to form a first layer of sealing body. After solidification, this sealing body is a soft seal with good sealing effects at high and low temperatures and slight bending; at the same time, the first conical rubber sealing plugs 205 at both ends form a second soft sealing layer; after the first layer of sealing body is solidified, epoxy resin is poured into the aluminum alloy flanges 203 at both ends, and the epoxy resin can be poured into the glue groove through the glue injection tube 301 to form a third hard sealing layer; when the epoxy resin filler is cured, the second conical rubber sealing plug 206 and the sealing pressure ring 207 are installed, and after being tightened with stainless steel screws, the second conical rubber sealing plug 206 forms a fourth sealing layer. Multi-layer sealing can effectively improve the sealing of optical fiber components.

[0037] In summary, the component adopts multi-layer sealing measures such as silicone filling 102, first conical rubber sealing plug 205, epoxy resin potting and second conical rubber sealing plug 206. This multi-layer sealing not only provides a physical barrier, but also enhances the overall sealing effect through the characteristics of different materials, such as the flexibility of silicone and the hardness of epoxy resin, effectively preventing moisture, dust, corrosive gases and the like in the external environment from entering the interior of the optical fiber component and protecting the optical fiber core from damage. Among them, the soft seal is combined with the hard seal. The silicone filling 102 and the rubber sealing plug are used as soft sealing layers, which can adapt to certain deformation and temperature changes and maintain the sealing effect, while the epoxy resin potting provides stronger hardness and durability, further enhancing the reliability of the seal. In a high-pressure environment, good sealing performance is one of the key factors in preventing electrical breakdown. The multi-layer sealing structure can effectively isolate the optical fiber component from the external environment, reduce faults and accidents caused by electrical breakdown, and reduce the erosion and damage of the external environment to the optical fiber core by improving the sealing performance, thereby extending the overall service life of the optical fiber component.

[0038] Example 2: Please refer to Figure 3 , Figure 4 as well as Figure 5 The present invention also provides a technical solution, which is different from the technical solution of the first embodiment: a composite optical fiber component for a voltage level of 110kv or above, wherein a plurality of cleaning blocks 300 for cleaning the optical fiber core 100 are arranged in the glue groove, and when the optical fiber core 100 passes through the hollow glass fiber rod 101, it will first pass through the plurality of cleaning blocks 300, wherein the plurality of cleaning blocks 300 can clean the outer surface of the optical fiber core 100, and a compensation component for controlling the mutual movement of the plurality of cleaning blocks 300 is arranged inside the aluminum alloy flange 203, and the initial state of the plurality of cleaning blocks 300 is to contact the outer surface of the optical fiber core 100 to clean it, and when epoxy resin needs to be filled, they need to be away from each other to allow the epoxy resin to fully contact the optical fiber core 100, and at this time, the compensation component will drive the plurality of cleaning blocks 300 to move away from each other to provide working conditions for the epoxy resin.

[0039] Among them, see Figure 8 , Fig. 9 as well as Fig.10The compensation component includes a plurality of rotating columns 312 rotatably connected to the inside of the aluminum alloy flange 203, and the outer surfaces of the plurality of rotating columns 312 are respectively fixedly connected with second protruding handles 314, and the interiors of the plurality of cleaning blocks 300 are respectively fixedly connected with sliding rods 315 slidably connected to the glue groove, and one end of the plurality of sliding rods 315 is rotatably connected with movable handles 316 rotatably connected to the plurality of second protruding handles 314. The rotation of the plurality of rotating columns 312 can pull the second protruding handles 314 to rotate and drive the sliding rods 315 to be dislocated, so that the plurality of cleaning blocks 300 are away from each other, and the two ends of the plurality of cleaning blocks 300 are respectively fixedly connected with spring plates 317, and the glue groove is provided with grooves for the plurality of spring plates 317 to be fixedly connected. The plurality of spring plates 317 can provide the cleaning blocks 300 with the power to reset, so that when the rotating columns 312 rotate, the cleaning blocks 300 are driven to reset and resist the molded epoxy resin.

[0040] For further information, see Fig.11 , Fig.13 as well as Fig.14 The aluminum alloy flange 203 is internally rotatably connected with a ring disk 310, and the inner wall of the ring disk 310 is evenly fixedly connected with a plurality of pull handles 311, and the outer surfaces of the plurality of rotating posts 312 are fixedly connected with a first protruding handle 313 rotatably connected with the pull handle 311. The rotation of the ring disk 310 can drive the plurality of rotating posts 312 to rotate synchronously, thereby pulling the plurality of sliding rods 315 to move synchronously. The aluminum alloy flange 203 is internally provided with an air receiving cylinder 308, and the top of the air receiving cylinder 308 is slidably connected with the first protruding handle 313. The adapted slave piston rod 309 has an inclined surface 318 inside the ring disk 310. The top of the slave piston rod 309 is rotatably connected to a ball 319 that is slidably connected to the inclined surface 318. The cooperation between the ball 319 and the inclined surface 318 can drive the ring disk 310 to rotate slowly, thereby driving the multiple rotating cylinders 312 to rotate. At the same time, the ball 319 and the inclined surface 318 are slidably connected so that the two will not be separated. When the slave piston rod 309 is reset, the pull ring disk 310 can be reset.

[0041] Among them, see Figure 5 , Figure 6 as well as Fig.12 The inside of the glue injection tube 301 is fixedly connected to an air cylinder 305, one end of the air cylinder 305 is slidably connected to an active piston rod 304 adapted thereto, and the end of the active piston rod 304 away from the air cylinder 305 is fixedly connected to a piston 303 adapted to the glue injection tube 301. The piston 303 can prevent the epoxy resin from flowing back and at the same time prevent external control from eroding the epoxy resin, thereby increasing its service life. The top of the air cylinder 305 is connected to an air pipe 307 that passes through the glue injection tube 301 and is connected to the bottom of the air receiving cylinder 308.

[0042] For further information, see Figure 6 , Figure 7 as well as Fig.13A gas relief groove is provided at the top of the glue injection tube 301, and an air blocking block 400 is arranged in the gas relief groove. The two ends of the bottom of the air blocking block 400 are respectively fixedly connected with tension springs 401 fixedly connected to the glue injection tube 301. The top of the air delivery cylinder 305 is rotatably connected with a resistance handle 402 that can resist the gas blocking block 400, and the piston end of the active piston rod 304 can resist the bottom of the resistance handle 402.

[0043] It is worth mentioning that a return spring 306 for returning the active piston rod 304 is fixedly connected inside the gas cylinder 305. One end of the gas cylinder 305 extends to the top of the anti-return tube 302, so that the piston 303 is located above the anti-return tube 302 when it is moved by pressure, so that the air bubble can flow to the direction of the air blocking block 400 through the anti-return tube 302. When the epoxy resin is poured into the injection tube 301, the piston 303 is displaced by pressure, thereby pushing the piston end of the active piston rod 304 to move inside the gas cylinder 305. When the piston 303 passes over the anti-return tube 302, the epoxy resin will enter the interior of the aluminum alloy flange 203 through the anti-return tube 302. At this time, the piston end of the active piston rod 304 will contact the abutment handle 402 to drive one end thereof to move, and then abut the air blocking block 400 to move upward to open the gap of the injection tube 301. The piston 303 is located directly above the anti-return tube 302. When the aluminum alloy flange 203 is gradually filled with epoxy resin, the air inside it will be squeezed upward and discharged through the gap of the injection tube 301, thereby reducing the mixing of gas in the epoxy resin.

[0044] Specifically, when the gas in the gas delivery cylinder 305 is squeezed, it will be transported to the inside of the gas receiving cylinder 308 through the gas delivery pipe 307. At this time, the increase in gas in the gas receiving cylinder 308 will push the driven piston rod 309 to move upward. At this time, the ball 319 on the top of the driven piston rod 309 will slide in the inclined surface 318 to drive the ring disk 310 to rotate. When the ring disk 310 rotates, it will drive multiple pull handles 311 to move with it, and the movement of the pull handle 311 will pull the first protruding handle 313 to move, thereby driving the rotating column 312 to rotate. At this time, the rotating column 312 will drive the second protruding handle 314 to rotate and pull one end of the movable handle 316 to move, thereby pulling the sliding rod 315 to move, so that the multiple cleaning blocks 300 are away from the outer surface of the optical fiber core 100. After the epoxy resin gradually increases and solidifies, the piston 303 will reset, thereby driving the multiple cleaning blocks 300 to reset and squeeze the epoxy resin, so that it is completely attached to the outer surface of the optical fiber core 100.

[0045] In summary, before the optical fiber core 100 passes through the hollow glass fiber rod 101, it will first pass through a plurality of cleaning blocks 300. These cleaning blocks 300 can automatically clean the impurities and dirt on the outer surface of the optical fiber core 100 to ensure the cleanliness of the optical fiber core 100, thereby improving the quality and stability of optical fiber communication. During the epoxy resin filling process, the cleaning blocks 300 can temporarily stay away from the optical fiber core 100 to provide space for sufficient contact of the epoxy resin. After the epoxy resin solidifies, the cleaning blocks 300 can be reset and tightly fit the optical fiber core 100 to form an additional protective layer to prevent the optical fiber core 100 from being damaged by the external environment. Through the cooperation of the injection tube 301 and the anti-return tube 302, and the piston 303 and the air blocking block 4 00, effectively reducing the bubbles and faults generated during the epoxy resin filling process. When the epoxy resin gradually fills the aluminum alloy flange 203, the air inside will be squeezed and discharged through the gap of the injection tube 301. When the piston 303 in the injection tube 301 moves under pressure, it not only promotes the filling of the epoxy resin, but also drives the air blocking block 400 to move up through the abutment handle 402 to open the exhaust port. This linkage effect makes the filling of the epoxy resin and the cleaning process of the optical fiber core 100 closely connected, improving the overall work efficiency. The change in gas pressure in the gas cylinder 308 drives the driven piston rod 309 to move up, and then drives the ring disk 310 to rotate through the interaction between the inclined surface 318 and the ball 319. This design of converting gas pressure into mechanical transmission simplifies the structure and improves the transmission efficiency.

[0046] Working principle: First, the optical fiber core 100 passes through the hollow glass fiber rod 101, and the outer surface of the hollow glass fiber rod 101 is coated with a sheath 200 to make the two integrated. At the same time, a silicone shed 201 is attached to the outside, which passes through the first conical rubber sealing plug 205 and the aluminum alloy flanges 203 at both ends to be glued into a whole. The silicone filling 102 is delivered to the narrow gap between the optical fiber core 100 and the hollow glass fiber rod 101 through the injection hole 204 by high-pressure filling to form a sealing body. After the epoxy resin is poured through the injection tube 301, the second conical rubber sealing plug 206 is installed. The sealing pressure ring 207 is fixed to the aluminum alloy flange 203 with stainless steel screws. The equalizing ring 202 is installed at the junction of the metal ends and the silicone shed 201 to form a multi-material seal with 3 layers of soft seals and one layer of hard seals, which greatly improves the consistency and safety of the product and ensures safe use in outdoor severe weather with changeable temperature and humidity;

[0047] When the optical fiber core 100 passes through the hollow glass fiber rod 101, it will first pass through a plurality of cleaning pressing blocks 300, wherein the plurality of cleaning pressing blocks 300 can clean the outer surface of the optical fiber core 100, and when the epoxy resin is poured into the glue injection tube 301, the piston 303 will be displaced by pressure, thereby pushing the piston end of the active piston rod 304 to move inside the gas cylinder 305, and when the piston 303 passes over the anti-return tube 302, the epoxy resin will enter the interior of the aluminum alloy flange 203 through the anti-return tube 302, at this time, the piston end of the active piston rod 304 will contact the abutment handle 402 to drive one end thereof to move, and then abut the air blocking block 400 to move upward to open the gap of the glue injection tube 301, and the piston 303 is located directly above the anti-return tube 302, and when the aluminum alloy flange 203 is gradually filled with epoxy resin, the air inside it will be squeezed upward and discharged through the gap of the glue injection tube 301, thereby reducing the mixing of gas in the epoxy resin;

[0048] At the same time, when the gas in the gas delivery cylinder 305 is squeezed, it will be transported to the inside of the gas receiving cylinder 308 through the gas delivery pipe 307. At this time, the increase in gas in the gas receiving cylinder 308 will push the driven piston rod 309 to move upward. At this time, the ball 319 on the top of the driven piston rod 309 will slide in the inclined surface 318 to drive the ring disk 310 to rotate. When the ring disk 310 rotates, it will drive multiple pull handles 311 to move with it, and the movement of the pull handle 311 will pull the first protruding handle 313 to move, thereby driving the rotating column 312 to rotate. At this time, the rotating column 312 will drive the second protruding handle 314 to rotate and pull one end of the movable handle 316 to move, thereby pulling the sliding rod 315 to move, so that the multiple cleaning blocks 300 are away from the outer surface of the optical fiber core 100. After the epoxy resin gradually increases and solidifies, the piston 303 will reset, thereby driving the multiple cleaning blocks 300 to reset and squeeze the epoxy resin, so that it is completely attached to the outer surface of the optical fiber core 100, thereby forming an effective seal.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite optical fiber assembly for voltage levels above 110 kV, comprising an optical fiber core (100) and a hollow glass fiber rod (101), characterized in that: The optical fiber core (100) passes through the hollow glass fiber rod (101), the gap between the optical fiber core (100) and the hollow glass fiber rod (101) is filled with a silica gel filler (102), the outer surface of the hollow glass fiber rod (101) is coated with a sheath (200), and the two ends of the sheath (200) are respectively glued with aluminum alloy flanges (203), and the aluminum alloy flange (203) is provided with a glue groove inside, and a plurality of cleaning blocks (303) for cleaning the optical fiber core (100) are provided in the glue groove. 00), one end of the aluminum alloy flange (203) is connected to a glue injection tube (301) for epoxy resin to enter, the bottom of the glue injection tube (301) is connected to a return tube (302) extending into the glue groove, a compensation component for controlling the mutual movement of multiple cleaning blocks (300) is arranged inside the aluminum alloy flange (203), and a first conical rubber sealing plug (205) and a second conical rubber sealing plug (206) are fixedly connected to the outer surface of the optical fiber core (100) and located inside the aluminum alloy flange (203).

2. A composite optical fiber assembly for voltage levels above 110 kV according to claim 1, characterized in that: The compensation component comprises a plurality of rotating posts (312) rotatably connected to the inside of the aluminum alloy flange (203), the outer surfaces of the plurality of rotating posts (312) are respectively fixedly connected to second protruding handles (314), the insides of the plurality of cleaning blocks (300) are respectively fixedly connected to sliding rods (315) slidably connected to the glue groove, and one end of the plurality of sliding rods (315) is rotatably connected to a movable handle (316) rotatably connected to the plurality of second protruding handles (314).

3. A composite optical fiber assembly for voltage levels above 110 kV according to claim 2, characterized in that: The aluminum alloy flange (203) is rotatably connected to a ring disk (310) inside, the inner wall of the ring disk (310) is evenly and fixedly connected to a plurality of pull handles (311), and the outer surfaces of the plurality of rotating columns (312) are all fixedly connected to a first protruding handle (313) rotatably connected to the pull handle (311).

4. A composite optical fiber assembly for voltage levels above 110 kV according to claim 3, characterized in that: The aluminum alloy flange (203) is provided with an air receiving cylinder (308) inside, and the top of the air receiving cylinder (308) is slidably connected to a driven piston rod (309) adapted thereto, and the inside of the ring disk (310) is provided with an inclined surface (318), and the top of the driven piston rod (309) is rotatably connected to a ball (319) slidably connected to the inclined surface (318).

5. A composite optical fiber assembly for voltage levels above 110 kV according to claim 4, characterized in that: The inside of the rubber injection tube (301) is fixedly connected to an air delivery cylinder (305), one end of the air delivery cylinder (305) is slidably connected to an active piston rod (304) adapted thereto, the end of the active piston rod (304) away from the air delivery cylinder (305) is fixedly connected to a piston (303) adapted to the rubber injection tube (301), and the top of the air delivery cylinder (305) is connected to an air delivery pipe (307) that passes through the rubber injection tube (301) and is connected to the bottom of the air receiving cylinder (308).

6. A composite optical fiber assembly for voltage levels above 110 kV according to claim 2, characterized in that: Both ends of the plurality of cleaning pressing blocks (300) are respectively fixedly connected with spring sheets (317), and a groove for fixedly connecting the plurality of spring sheets (317) is provided in the glue groove.

7. A composite optical fiber assembly for voltage levels above 110 kV according to claim 5, characterized in that: The top of the glue injection tube (301) is provided with an air release groove, and an air blocking block (400) is arranged in the air release groove. The two ends of the bottom of the air blocking block (400) are respectively fixedly connected with tension springs (401) fixedly connected to the glue injection tube (301). The top of the air delivery cylinder (305) is rotatably connected with a resistance handle (402) that can resist the air blocking block (400), and the piston end of the active piston rod (304) can resist the bottom of the resistance handle (402).

8. A composite optical fiber assembly for voltage levels above 110 kV according to claim 5, characterized in that: A return spring (306) for returning the active piston rod (304) is fixedly connected to the inside of the gas delivery cylinder (305), and one end of the gas delivery cylinder (305) extends to just above the anti-return tube (302).

9. A composite optical fiber assembly for voltage levels above 110 kV according to claim 2, characterized in that: The outer surface of the sleeve (200) is fixedly connected with a plurality of silicone umbrella skirts (201); the two aluminum alloy flanges (203) and the sleeve (200) are fixedly connected with equalizing rings (202) at the glued parts; a sealing pressure ring (207) is arranged inside the aluminum alloy flange (203) and on the outer surface of the second conical rubber sealing plug (206); the sealing pressure ring (207) is pressed against the second conical rubber sealing plug (206) by bolts.

10. A composite optical fiber assembly for voltage levels above 110 kV according to claim 1, characterized in that: The tops of the two aluminum alloy flanges (203) are each provided with a glue injection hole (204), and the glue injection hole (204) is used for the silica gel filling (102) to be poured into.

Images