High-voltage insulating sleeve

Abstract

The utility model belongs to the technical field of insulating sleeves, and particularly relates to a high-voltage insulating sleeve. The sleeve body is arranged outside the conducting rod and comprises a first sleeve and a second sleeve; the connecting structure comprises a first flange arranged on the first sleeve, a second flange arranged on the second sleeve and a connecting assembly for connecting the first flange and the second flange; the waterproof sealing ring is arranged at the joint of the first sleeve and the second sleeve; the sealing structure has the beneficial effects that by adopting the design of the waterproof sealing ring and the sealing grooves, the problem that the sealing performance of the connecting position is insufficient is effectively solved, the waterproof sealing ring can be tightly attached to the interior of the sealing groove after being compressed, the sealing performance of the sealing structure is improved, and the sealing performance of the sealing structure is improved. A continuous and reliable sealing layer is formed, and rainwater and other external water flows are prevented from permeating into the sleeve from the connecting position.

Description

Technical Field

[0001] This application belongs to the technical field of insulating bushings, and particularly relates to a high-voltage insulating bushing. Background Art

[0002] In the power system, power capacitors are important power equipment for maintaining the normal and efficient operation of the power grid. Power capacitors can provide reactive power compensation for the power system and filter out the co-spectrum components existing in the circuit system.

[0003] The patent with the publication number CN217086273U discloses an insulating structure of an electric vehicle high-voltage bushing, including an outer tube one and an outer tube two. Epoxy resin fiberglass rods are movably installed inside both the outer tube one and the outer tube two. One end of the outer tube one and the outer tube two facing each other are respectively fixedly connected with a flange two and a flange one. The flange two and the flange one are both provided with through holes one for facilitating the insertion of the epoxy resin fiberglass rods. A plurality of silicone rubber umbrella sleeves are fixedly connected to the outer sides of the outer tube one and the outer tube two. Copper conductive blocks are installed at the ends of the outer tube one and the outer tube two away from each other through a portable disassembly and assembly mechanism. Two symmetrically arranged docking mechanisms are connected between the flange two and the flange one.

[0004] The above patent facilitates the replacement of the epoxy resin fiberglass rods in the outer tube one and the outer tube two by setting a docking mechanism. However, in actual use, the sealing performance at the connection is insufficient, and gaps are generated at the connection. Then, external water flows such as rainwater are very likely to enter the dry-type insulating high-voltage bushing from the gaps, affecting the insulation of the conductive rod and causing safety accidents, which needs to be improved. Summary of the Utility Model

[0005] The purpose of this application is to provide a high-voltage insulating bushing that can solve the above problems.

[0006] The purpose of this application is to provide a high-voltage insulating bushing, including:

[0007] A conductive rod;

[0008] A bushing body, arranged outside the conductive rod, including a first bushing and a second bushing;

[0009] A connection structure, including a first flange arranged on the first bushing, a second flange arranged on the second bushing, and a connection component connecting the first flange and the second flange;

[0010] A waterproof sealing ring, arranged at the connection of the first bushing and the second bushing;

[0011] Wherein, sealing grooves adapted to the waterproof sealing ring are arranged on the first flange and the second flange.

[0012] Adopting the above-mentioned high-voltage insulating bushing, the conductive rod, as the core component of the electrical equipment, is responsible for the transmission of current. The bushing body is composed of a first bushing and a second bushing, which is arranged outside the conductive rod to provide insulation protection. The first flange is arranged on the first bushing for connecting with the second bushing, and the second flange is arranged on the second bushing and corresponds to the first flange. By adopting the design of a waterproof sealing ring and a sealing groove, the problem of insufficient sealing at the connection is effectively solved. After being compressed, the waterproof sealing ring can closely fit in the sealing groove to form a continuous and reliable sealing layer, preventing external water flows such as rainwater from seeping into the bushing interior from the connection. At the same time, although the sealing measures are increased, the installation and maintenance processes of the bushing still remain simple. The design of the connection component makes the installation and disassembly processes relatively easy, and the standardized design of the waterproof sealing ring and the sealing groove reduces the difficulty of replacement and maintenance, significantly reducing the risk of insulation performance degradation and electrical faults caused by external moisture intrusion, thereby improving the safety and reliability of the entire electrical equipment.

[0013] Furthermore, the connection component includes:

[0014] A first through hole, arranged on the first flange;

[0015] A second through hole, arranged on the second flange and corresponding to the first through hole;

[0016] A mounting plate, arranged at the bottom of the second flange, and threaded holes corresponding to the first through hole are arranged on the mounting plate;

[0017] A fastener, including a rod portion and a force-applying portion, and an external thread adapted to the threaded hole is arranged on the force-applying portion;

[0018] Among them, the fastener is a plastic fastener, and the fastener passes through the first through hole, the second through hole and then cooperates with the threaded hole.

[0019] The first through hole is arranged on the first flange as the initial passage for the fastener to pass through. The second through hole is arranged on the second flange and corresponds to the first through hole. The two through holes together constitute the path for the fastener to pass through. The mounting plate is arranged at the bottom of the second flange, and threaded holes corresponding to the first through hole are arranged on it. The mounting plate provides a fixed basis for the fastener and cooperates with the rod portion of the fastener through the threaded hole to achieve the fastening effect. The rod portion passes through the first through hole and the second through hole and cooperates with the threaded hole on the mounting plate, and the force-applying portion is arranged at one end of the rod portion to facilitate the operator to rotate the fastener. The fastener is made of plastic material. Compared with metal fasteners, plastic fasteners are lighter, which helps to reduce the weight of the entire bushing, facilitate installation and maintenance. Moreover, plastic is a good insulating material. Using plastic fasteners helps to maintain the insulation performance inside the bushing, reduce potential safety hazards caused by the fastener conducting electricity, and the production cost is relatively low, which helps to reduce the manufacturing cost of the entire bushing.

[0020] When the fastener is screwed into the threaded hole, its rod part will generate a certain pressing force on the first flange and the second flange, which helps to further compress the waterproof sealing ring and improve the sealing effect. By adopting plastic fasteners and corresponding connection structures, the connection assembly realizes the stable connection and good sealing between the sleeve bodies.

[0021] Furthermore, the connection assembly further includes:

[0022] A waterproof protrusion is arranged on the first through hole, and a third through hole communicating with the first through hole is arranged inside it;

[0023] A waterproof cover is arranged on the waterproof protrusion, and a limiting hole communicating with the third through hole penetrates through its surface;

[0024] A rubber ring is arranged between the waterproof protrusion and the waterproof cover;

[0025] Wherein, an annular groove for placing the rubber ring is arranged on the outer wall of the waterproof protrusion.

[0026] The waterproof protrusion is arranged on the first through hole, and a third through hole communicating with the first through hole is arranged inside it. When the fastener passes through the first through hole, it will first enter the third through hole inside the waterproof protrusion. The waterproof protrusion provides an additional sealing layer, guides the fastener to pass through through the third through hole inside it, and reduces the possibility of moisture seeping in from the through hole. An annular groove for placing the rubber ring is arranged on the outer wall of the waterproof protrusion, ensuring that the rubber ring can closely fit on the waterproof protrusion to form an effective seal. The waterproof cover is arranged on the waterproof protrusion, and a limiting hole communicating with the third through hole penetrates through its surface. The limiting hole limits the movement range of the rod part to a certain extent, preventing excessive movement or loosening, thereby maintaining the stability and tightness of the connection.

[0027] Meanwhile, when the waterproof cover is installed on the waterproof protrusion, the rubber ring will be compressed and closely fit on the contact surface between the waterproof protrusion and the waterproof cover, forming a continuous sealing layer, which can effectively block moisture and other external impurities from seeping into the sleeve interior from the connection part. Through the combined action of the waterproof protrusion, the waterproof cover and the rubber ring, a multi-level sealing system is formed, which can effectively prevent moisture and other external impurities from seeping into the sleeve interior from the connection part.

[0028] Furthermore, the second through hole has the same diameter as the first through hole. A supporting ring protruding inwards is arranged on the inner wall of the second through hole, a pressing ring protruding outwards is arranged on the outer wall of the rod part, a spring is arranged between the supporting ring and the pressing ring, and the spring is sleeved outside the rod part.

[0029] The diameter of the second through-hole is the same as that of the first through-hole, which ensures that the fastener can smoothly pass through the two through-holes without being blocked due to size mismatch. A support ring protruding inwards is provided on the inner wall of the second through-hole to provide a stable support point for supporting the spring. A pressing ring protruding outwards is provided on the outer wall of the rod portion, and the pressing ring cooperates with the support ring. When the fastener is screwed into the threaded hole, the pressing ring will be squeezed by the support ring driving the spring, thereby generating a certain pre-tightening force, which helps to enhance the tightness of the connection and improve the sealing effect. The spring is sleeved outside the rod portion and can play an auxiliary role during the installation process. When the fastener needs to be disassembled, the elastic force of the spring can assist in the disassembly process and reduce the resistance during disassembly.

[0030] Further, a sealing cap is provided at the bottom of the rod portion, and a sealing cap is also provided on the force-applying portion. The sealing cap is made of rubber and includes an outer wrapping portion and an inner elastic connecting portion. The elastic connecting portion is connected to the rod portion and the force-applying portion.

[0031] The sealing cap is made of rubber, which has good elasticity and sealing performance and can effectively block the intrusion of moisture and other external impurities. The sealing cap includes an outer wrapping portion and an inner elastic connecting portion. The wrapping portion is the main part of the sealing cap, and its diameter is larger than the diameter of the mounting plate, ensuring that it can completely cover the mounting plate and the surrounding area during installation, forming an effective sealing barrier. The elastic connecting portion is responsible for connecting to the rod portion or the force-applying portion to ensure that the sealing cap can be firmly fixed on the fastener.

[0032] Further, the diameter of the wrapping portion is larger than the diameter of the mounting plate, and one end of the wrapping portion is closely attached to the surface of the second flange.

[0033] The diameter of the wrapping portion is larger than the diameter of the mounting plate, ensuring that the wrapping portion can closely adhere to the surface of the second flange, which helps to avoid the gap between the wrapping portion and the second flange, thereby further improving the sealing performance. At the same time, this close attachment effect is achieved through the elasticity and sealing performance of the rubber material, which can effectively block the intrusion of moisture and other external impurities and protect the insulation performance inside the sleeve.

[0034] The beneficial effects of this application are:

[0035] 1. By adopting the design of the waterproof sealing ring and the sealing groove, the problem of insufficient sealing at the connection is effectively solved. After being compressed, the waterproof sealing ring can closely fit in the sealing groove to form a continuous and reliable sealing layer, preventing external water flows such as rainwater from seeping into the sleeve interior from the connection.

[0036] 2. Despite the addition of sealing measures, the installation and maintenance process of the casing remains simple. The design of the connection components makes the installation and disassembly process relatively easy, while the standardized design of the waterproof sealing ring and the sealing groove reduces the difficulty of replacement and maintenance, significantly reducing the risk of insulation performance degradation and electrical faults caused by external moisture intrusion, thereby improving the safety and reliability of the entire electrical equipment.

[0037] 3. Through the cooperation of the support ring and the pressing ring, when the fastener is screwed into the threaded hole, the pressing ring will be extruded by the spring driven by the support ring, thereby generating a certain pre-tightening force, which helps to enhance the tightness of the connection and improve the sealing effect. The spring is sleeved outside the rod part and can play an auxiliary role during the installation process. When the fastener needs to be disassembled, the elastic force of the spring can assist the disassembly process and reduce the resistance during disassembly. Brief Description of the Drawings

[0038] Figure 1 is a schematic structural view of the present utility model;

[0039] Figure 2 is a schematic structural view of the connection structure of the present utility model;

[0040] Figure 3 is Figure 2 an enlarged view of A in

[0041] In the figure, the reference numerals are: 100, conductive rod; 200, casing body; 210, first casing; 220, second casing; 300, connection structure; 310, first flange; 320, second flange; 400, connection component; 410, first through hole; 420, second through hole; 430, mounting plate; 431, threaded hole; 440, fastener; 441, rod part; 442, force application part; 450, waterproof protrusion; 451, third through hole; 452, waterproof cover; 453, limiting hole; 460, rubber ring; 461, annular groove; 470, support ring; 471, pressing ring; 472, spring; 500, waterproof sealing ring; 510, sealing groove; 600, sealing cap; 610, wrapping part; 620, elastic connection part. Detailed Description of the Embodiment

[0042] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0043] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0044] The high-voltage insulating bushing provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0045] Embodiment 1:

[0046] like Figure 1 Hezhi Figure 3 As shown, an embodiment of the present application provides a high-voltage insulating bushing, comprising:

[0047] Conductive rod 100;

[0048] The sleeve body 200 is disposed outside the conductive rod 100 and includes a first sleeve 210 and a second sleeve 220;

[0049] The connection structure 300 includes a first flange 310 disposed on the first sleeve 210, a second flange 320 disposed on the second sleeve 220, and a connection assembly 400 connecting the first flange 310 and the second flange 320;

[0050] A waterproof sealing ring 500 is provided at the connection between the first sleeve 210 and the second sleeve 220;

[0051] The first flange 310 and the second flange 320 are provided with sealing grooves 510 adapted to the waterproof sealing ring 500 .

[0052] In some implementations of the embodiments of the present application, Figure 1As shown in the figure, a high-voltage insulating bushing is adopted. The conductive rod 100, as the core component of the electrical equipment, is responsible for the transmission of current. The bushing body 200 is composed of a first bushing 210 and a second bushing 220, which is arranged outside the conductive rod 100 to provide insulation protection. The first flange 310 is arranged on the first bushing 210 for connecting with the second bushing 220. The second flange 320 is arranged on the second bushing 220 and corresponds to the first flange 310. By adopting the design of the waterproof sealing ring 500 and the sealing groove 510, the problem of insufficient sealing at the connection is effectively solved. After being compressed, the waterproof sealing ring 500 can closely fit in the sealing groove 510 to form a continuous and reliable sealing layer, preventing external water flows such as rainwater from seeping into the bushing interior from the connection. At the same time, although the sealing measures are increased, the installation and maintenance processes of the bushing still remain simple. The design of the connection component 400 makes the installation and disassembly processes relatively easy, while the standardized design of the waterproof sealing ring 500 and the sealing groove 510 reduces the difficulty of replacement and maintenance, significantly reducing the risk of insulation performance degradation and electrical faults caused by external moisture intrusion, thereby improving the safety and reliability of the entire electrical equipment.

[0053] Embodiment 2:

[0054] The embodiment of the present application provides a high-voltage insulating bushing. In addition to including the above technical features, the high-voltage insulating bushing of the embodiment of the present application further includes the following technical features.

[0055] As Figure 3 shown, the connection component 400 includes:

[0056] A first through hole 410, arranged on the first flange 310;

[0057] A second through hole 420, arranged on the second flange 320 and corresponding to the first through hole 410;

[0058] A mounting plate 430, arranged at the bottom of the second flange 320. A threaded hole 431 corresponding to the first through hole 410 is arranged on the mounting plate 430;

[0059] A fastener 440, including a rod portion 441 and a force-applying portion 442. An external thread adapted to the threaded hole 431 is arranged on the force-applying portion 442;

[0060] Among them, the fastener 440 is a plastic fastener 440. The fastener 440 passes through the first through hole 410 and the second through hole 420 and then cooperates with the threaded hole 431.

[0061] In the embodiment of the present application, the first through hole 410 is provided on the first flange 310 as the initial passage for the fastener 440 to pass through. The second through hole 420 is provided on the second flange 320 and corresponds to the first through hole 410. The two through holes together form the path for the fastener 440 to pass through. The mounting plate 430 is provided at the bottom of the second flange 320, and a threaded hole 431 corresponding to the first through hole 410 is provided thereon. The mounting plate 430 provides a fixed base for the fastener 440 and cooperates with the rod portion 441 of the fastener 440 through the threaded hole 431 to achieve the fastening effect. The rod portion 441 passes through the first through hole 410 and the second through hole 420 and cooperates with the threaded hole 431 on the mounting plate 430. The force application portion 442 is provided at one end of the rod portion 441 to facilitate the operator to rotate the fastener 440. The fastener 440 is made of plastic material. The plastic fastener 440 is lighter than the metal fastener 440, which helps to reduce the weight of the entire casing, facilitates installation and maintenance. Moreover, plastic is a good insulating material. Using the plastic fastener 440 helps to maintain the insulation performance inside the casing and reduce the safety hazards caused by the conduction of the fastener 440. In addition, the production cost is relatively low, which helps to reduce the manufacturing cost of the entire casing.

[0062] When the fastener 440 is screwed into the threaded hole 431, its rod portion 441 will generate a certain pressing force on the first flange 310 and the second flange 320, which helps to further compress the waterproof sealing ring 500 and improve the sealing effect. By using the plastic fastener 440 and the corresponding connection structure 300, the connection assembly 400 realizes the stable connection and good sealing between the casing bodies 200.

[0063] Embodiment 3:

[0064] The embodiment of the present application provides a high-voltage insulating casing. In addition to including the above technical features, the high-voltage insulating casing of the embodiment of the present application further includes the following technical features.

[0065] As Figure 3 shown, the connection assembly 400 further includes:

[0066] A waterproof protrusion 450 is provided on the first through hole 410, and a third through hole 451 communicating with the first through hole 410 is provided inside it;

[0067] A waterproof cover 452 is provided on the waterproof protrusion 450, and a limiting hole 453 communicating with the third through hole 451 penetrates through its surface;

[0068] A rubber ring 460 is provided between the waterproof protrusion 450 and the waterproof cover 452;

[0069] Wherein, an annular groove 461 for placing the rubber ring 460 is provided on the outer wall of the waterproof protrusion 450.

[0070] In the embodiment of the present application, a waterproof protrusion 450 is provided on the first through hole 410. A third through hole 451 communicating with the first through hole 410 is arranged inside it. When the fastener 440 passes through the first through hole 410, it will first enter the third through hole 451 inside the waterproof protrusion 450. The waterproof protrusion 450 provides an additional sealing layer, guides the fastener 440 through the third through hole 451 inside it, and reduces the possibility of moisture seeping in from the through hole. An annular groove 461 for placing the rubber ring 460 is arranged on the outer wall of the waterproof protrusion 450, ensuring that the rubber ring 460 can closely fit on the waterproof protrusion 450 to form an effective seal. A waterproof cover 452 is arranged on the waterproof protrusion 450, and a limiting hole 453 communicating with the third through hole 451 penetrates through its surface. The limiting hole 453 limits the movement range of the rod portion 441 to prevent excessive movement or loosening, thereby maintaining the stability and tightness of the connection.

[0071] Meanwhile, when the waterproof cover 452 is installed on the waterproof protrusion 450, the rubber ring 460 will be compressed and closely fit on the contact surface between the waterproof protrusion 450 and the waterproof cover 452 to form a continuous sealing layer, which can effectively block moisture and other external impurities from seeping into the casing interior from the connection. Through the combined action of the waterproof protrusion 450, the waterproof cover 452 and the rubber ring 460, a multi-level sealing system is formed, which can effectively prevent moisture and other external impurities from seeping into the casing interior from the connection.

[0072] Embodiment 4:

[0073] The embodiment of the present application provides a high-voltage insulating casing. In addition to including the above technical features, the high-voltage insulating casing of the embodiment of the present application further includes the following technical features.

[0074] As Figure 3 shown, the second through hole 420 has the same diameter as the first through hole 410. A support ring 470 protruding inwards is arranged on the inner wall of the second through hole 420. A pressing ring 471 protruding outwards is arranged on the outer wall of the rod portion 441. A spring 472 is arranged between the support ring 470 and the pressing ring 471, and the spring 472 is sleeved outside the rod portion 441.

[0075] In the embodiment of the present application, the second through hole 420 has the same diameter as the first through hole 410, which ensures that the fastener 440 can smoothly pass through the two through holes without being blocked due to size mismatch. A support ring 470 protruding inward is provided on the inner wall of the second through hole 420 for providing a stable support point to support the spring 472. A pressing ring 471 protruding outward is provided on the outer wall of the rod portion 441. The pressing ring 471 cooperates with the support ring 470. When the fastener 440 is screwed into the threaded hole 431, the pressing ring 471 will be squeezed by the support ring 470 driving the spring 472, thereby generating a certain pre-tightening force, which helps to enhance the tightness of the connection and improve the sealing effect. The spring 472 is sleeved outside the rod portion 441 and can play an auxiliary role during the installation process. When the fastener 440 needs to be disassembled, the elastic force of the spring 472 can assist the disassembly process and reduce the resistance during disassembly.

[0076] Embodiment 5:

[0077] The embodiment of the present application provides a high-voltage insulating bushing. In addition to including the above technical features, the high-voltage insulating bushing of the embodiment of the present application further includes the following technical features.

[0078] As shown in the figure, a sealing cap 600 is provided at the bottom of the rod portion 441, and a sealing cap 600 is also provided on the force application portion 442. The sealing cap 600 is made of rubber and includes an outer wrapping portion 610 and an inner elastic connecting portion 620. The elastic connecting portion 620 is connected to the rod portion 441 and the force application portion 442.

[0079] In the embodiment of the present application, the sealing cap 600 is made of rubber, which has good elasticity and sealing performance and can effectively block the intrusion of moisture and other external impurities. The sealing cap 600 includes an outer wrapping portion 610 and an inner elastic connecting portion 620. The wrapping portion 610 is the main part of the sealing cap 600, and its diameter is larger than the diameter of the mounting plate 430, ensuring that it can completely cover the mounting plate 430 and its surrounding area during installation to form an effective sealing barrier. The elastic connecting portion 620 is responsible for connecting to the rod portion 441 or the force application portion 442 to ensure that the sealing cap 600 can be firmly fixed on the fastener 440.

[0080] Further, the diameter of the wrapping portion 610 is larger than the diameter of the mounting plate 430, and one end of the wrapping portion 610 is in close contact with the surface of the second flange 320.

[0081] In some embodiments of the present application, the diameter of the wrapping portion 610 is larger than the diameter of the mounting plate 430, ensuring that the wrapping portion 610 can closely adhere to the surface of the second flange 320, which helps to avoid the gap between the wrapping portion 610 and the second flange 320, thereby further improving the sealing performance. At the same time, this close adhesion effect is achieved through the elasticity and sealing performance of the rubber material, which can effectively block the intrusion of moisture and other external impurities and protect the insulation performance inside the sleeve.

[0082] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0083] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A high-voltage insulating bushing, characterized in that: Comprising: A conductive rod (100); A bushing body (200) disposed outside the conductive rod (100), including a first bushing (210) and a second bushing (220); A connection structure (300), including a first flange (310) disposed on the first bushing (210), a second flange (320) disposed on the second bushing (220), and a connection assembly (400) connecting the first flange (310) and the second flange (320); A waterproof sealing ring (500) disposed at the connection between the first bushing (210) and the second bushing (220); Wherein, sealing grooves (510) adapted to the waterproof sealing ring (500) are provided on the first flange (310) and the second flange (320).

2. The high-voltage insulating bushing according to claim 1, wherein: The connection assembly (400) includes: A first through hole (410) provided on the first flange (310); A second through hole (420) provided on the second flange (320) and corresponding to the first through hole (410); A mounting plate (430) disposed at the bottom of the second flange (320), and a threaded hole (431) corresponding to the first through hole (410) is provided on the mounting plate (430); A fastener (440), including a rod portion (441) and a force - applying portion (442), and an external thread adapted to the threaded hole (431) is provided on the force - applying portion (442); Wherein, the fastener (440) is a plastic fastener (440), and the fastener (440) passes through the first through hole (410) and the second through hole (420) and then cooperates with the threaded hole (431).

3. A high-voltage insulating bushing according to claim 2, characterized in that: The connection assembly (400) further includes: A waterproof protrusion (450) provided on the first through hole (410), and a third through hole (451) communicating with the first through hole (410) is provided inside it; A waterproof cover (452) provided on the waterproof protrusion (450), and a limiting hole (453) communicating with the third through hole (451) penetrates through its surface; A rubber ring (460) provided between the waterproof protrusion (450) and the waterproof cover (452); Wherein, an annular groove (461) for placing the rubber ring (460) is provided on the outer wall of the waterproof protrusion (450).

4. The high-voltage insulating bushing according to claim 2, characterized in that: The second through hole (420) has the same diameter as the first through hole (410), a supporting ring (470) protruding inwards is provided on the inner wall of the second through hole (420), a pressing ring (471) protruding outwards is provided on the outer wall of the rod portion (441), a spring (472) is provided between the supporting ring (470) and the pressing ring (471), and the spring (472) is sleeved outside the rod portion (441).

5. A high-voltage insulating bushing according to claim 2, characterized in that: A sealing cap (600) is provided at the bottom of the rod portion (441), and a sealing cap (600) is also provided on the force - applying portion (442). The sealing cap (600) is made of rubber, including an outer wrapping portion (610) and an inner elastic connecting portion (620), and the elastic connecting portion (620) is connected to the rod portion (441) and the force - applying portion (442).

6. The high-voltage insulating bushing according to claim 5, wherein: The diameter of the wrapping portion (610) is larger than the diameter of the mounting plate (430), and one end of the wrapping portion (610) is in close contact with the surface of the second flange (320).

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