Taper sleeve type connection porcelain bushing insulator

Abstract

The invention discloses a taper sleeve type connection porcelain bushing insulator which comprises a porcelain bushing, a taper neck is arranged at the lower end of the porcelain bushing in a matched mode, a straight neck is arranged at the lower end of the taper neck, a locking assembly used for locking the taper neck is arranged at the lower end of the porcelain bushing, and the taper sleeve type connection porcelain bushing insulator further comprises a connection assembly. The connecting assembly comprises guide grooves and guide protrusions, the porcelain bushing comprises a left half porcelain bushing and a right half porcelain bushing, the conical neck is fixedly connected with the lower end of the left half porcelain bushing, the guide grooves are formed in the right side faces of the front end and the rear end of the left half porcelain bushing, and the guide protrusions are arranged on the left side faces of the front end and the rear end of the right half porcelain bushing. According to the taper sleeve type connection porcelain bushing insulator, the porcelain bushing is designed into a combined structure of the left half porcelain bushing and the right half porcelain bushing, various connection and sealing assemblies are matched, and the taper sleeve type connection porcelain bushing insulator is provided with an adjustable expansion assembly. The connector has the advantages of being convenient to maintain, good in sealing performance and capable of being tightly connected with external equipment of different specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of insulating equipment, and specifically to a taper sleeve connection porcelain bushing insulator. Background Art

[0002] In modern power systems, insulating equipment plays a crucial role. It is a key component to ensure the safe and stable transmission of electricity. With the continuous development of the power industry, the scale of the power grid continues to expand, posing higher requirements for the performance and reliability of insulating equipment. As a common insulating equipment, porcelain bushing insulators are widely used in fields such as substations and transmission lines to support and insulate conductive components, prevent current leakage and electrical faults;

[0003] Existing taper sleeve connection porcelain bushing insulators usually consist of a porcelain bushing, metal accessories and a conductive rod. The porcelain bushing is generally of an integral structure, in the shape of a hollow cylinder, with multiple umbrella skirt structures on the surface. The metal accessories are installed at both ends of the porcelain bushing for connecting other power equipment. The conductive rod runs through the inside of the porcelain bushing, connecting to the wire at one end and extending to equipment such as transformers and switches at the other end. Its working principle is to use the insulating property of the porcelain bushing to separate the conductive component from the grounded part to prevent current leakage. During operation, the umbrella skirts increase the creepage distance and reduce the impact of conductive media such as rainwater on the insulation performance, while the conductive rod is responsible for introducing the current of the wire into equipment such as transformers and switches, or exporting the current generated by the equipment, ensuring the transmission of electricity along the specified path. For example, in a transmission line, the porcelain bushing insulator insulates the wire from the grounding body such as the pole tower, and at the same time the conductive rod accurately introduces the current in the wire into the relevant equipment to ensure the orderly transmission of electricity;

[0004] However, existing porcelain bushing insulators have many deficiencies. In the case of a fault in the internal components of the integral porcelain bushing structure, maintenance is extremely inconvenient, often requiring overall replacement, which is costly and time-consuming, affecting the continuity of power supply. In terms of connection, the connection method with external equipment is not flexible enough, making it difficult to adapt to different specifications of equipment, and the connection stability and sealing performance are also poor. This allows external moisture, dust and other impurities to easily invade the interior, erode the conductive components and insulating materials, reduce the insulation performance, shorten the service life of the insulator, and may also cause electrical faults, threatening the safe and stable operation of the power system. For this reason, we propose a taper sleeve connection porcelain bushing insulator. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a taper sleeve connection porcelain bushing insulator with convenient maintenance, excellent sealing and strong adaptability, which can effectively solve the problems in the background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A taper sleeve type connecting porcelain bushing insulator, comprising a porcelain bushing, a taper neck is disposed at the lower end of the porcelain bushing in a mating manner, a straight neck is provided at the lower end of the taper neck, and a locking assembly for locking the taper neck is provided at the lower end of the porcelain bushing. A connecting assembly is further included;

[0007] Connecting assembly: It includes a guide groove and a guide protrusion. The porcelain bushing includes a left half porcelain bushing and a right half porcelain bushing. The taper neck is fixedly connected to the lower end of the left half porcelain bushing. Guide grooves are provided on the right side surfaces at the front and rear ends of the left half porcelain bushing, and guide protrusions are provided on the left side surfaces at the front and rear ends of the right half porcelain bushing. The guide protrusions are all slidably connected to the adjacent guide grooves on the left side. A sealing assembly is provided between the left half porcelain bushing and the right half porcelain bushing;

[0008] Among them: An expansion assembly for connecting to an external device is provided at the lower end of the locking assembly. The porcelain bushing is designed as a combined structure of a left half porcelain bushing and a right half porcelain bushing, which is combined with a variety of connecting and sealing assemblies, and an adjustable expansion assembly is provided. Compared with the prior art, it has the advantages of being easy to maintain, having good sealing performance, and being able to be tightly connected to external devices of different specifications.

[0009] Further, the connecting assembly further includes a groove and a rubber protrusion. Rubber protrusions are provided on the upper side surface of the upper end of the left half porcelain bushing and the upper side surface of the lower end of the left half porcelain bushing. Grooves are provided on the lower side surface of the upper end of the right half porcelain bushing and the lower side surface of the right half porcelain bushing. The rubber protrusions are inserted into the adjacent grooves on the upper side, enhancing the sealing performance of the connection between the porcelain bushings.

[0010] Further, the connecting assembly further includes a mounting seat, a fiberglass binding band, a limiting frame, and a stabilizing frame. Uniformly distributed mounting seats are provided at the rear end of the outer arc surface of the right half porcelain bushing, and fiberglass binding bands are provided on the left side of each mounting seat. The fiberglass binding bands all bypass the outer arc surface of the left half porcelain bushing. Uniformly distributed limiting frames are provided at the front end of the outer arc surface of the right half porcelain bushing, and stabilizing frames are provided at the right ends of the fiberglass binding bands. The stabilizing frames are all clamped to the adjacent limiting frames on the right side, which is convenient for installation and disassembly and facilitates the maintenance of the porcelain bushing.

[0011] Further, the sealing assembly includes a corrugated spring piece and a sealing strip. The front and rear inner walls of the guide groove are provided with sealing strips through corrugated spring pieces. The opposite inner side surfaces of the two sealing strips are both slidably connected to the outer side surface of the guide protrusion located inside the same guide groove, effectively preventing external impurities such as dust and moisture from entering the interior of the porcelain bushing and ensuring the electrical insulation performance inside the porcelain bushing.

[0012] Furthermore, the sealing assembly further includes an arc-shaped corrugated spring piece, an arc-shaped sealing strip, a sealing block and a sealing groove. Sealing grooves are provided on the upper side surface of the upper end of the left half porcelain bushing and the upper side surface of the lower end of the left half porcelain bushing. Arc-shaped sealing strips are provided on the left and right inner arc surfaces of the sealing groove through arc-shaped corrugated spring pieces. Sealing blocks are provided on the lower side surface of the upper end of the right half porcelain bushing and the lower side surface of the right half porcelain bushing. The opposite inner arc surfaces of the two arc-shaped sealing strips located inside the same sealing groove are slidably connected to the outer arc surfaces of the adjacent upper sealing blocks, enhancing the reliability of the porcelain bushing seal.

[0013] Furthermore, the locking assembly includes a locking ring, an inverted cone groove, a connecting plate, a through hole and a sealing ring. An inverted cone groove is provided inside the locking ring, and the conical neck is located inside the inverted cone groove and is arranged in cooperation with the inverted cone groove. A connecting plate is arranged in cooperation with the lower side of the locking ring. A through hole is provided in the middle of the connecting plate. The lower end of the straight neck passes through the through hole. A sealing ring is provided on the upper side surface of the connecting plate, and the upper side surface of the sealing ring contacts the lower side surface of the conical neck. The inverted cone groove generates an axial pressure on the conical neck, enabling the two to be tightly combined and preventing loosening. The setting of the sealing ring further enhances the sealing performance of the connecting part.

[0014] Furthermore, the locking assembly further includes bolts and nuts. Uniformly distributed connecting holes are provided in the middle of the locking ring and the connecting plate. Bolts are inserted into the interiors of two adjacent upper and lower connecting holes, and nuts are threadedly connected to the lower ends of the bolts, further enhancing the stability and reliability of the locking assembly.

[0015] Furthermore, the expansion assembly includes an expansion frame, a sealing ring, a dovetail slider, a dovetail groove, a chute and rollers. Uniformly distributed dovetail grooves are provided on the lower side surface of the connecting plate. Dovetail sliders are slidably connected inside the dovetail grooves. Expansion frames are provided at the lower ends of the dovetail sliders. A sealing ring is sleeved between the outer arc surfaces of the expansion frames. Chutes are provided on the inclined inner walls of the dovetail grooves, and uniformly distributed rollers are rotatably connected between the upper and lower inner walls of the chutes. The rollers are all in contact with the inclined surfaces of the dovetail sliders located inside the same dovetail groove, improving the operation flexibility of the expansion assembly. The sealing ring can closely fit the surrounding components after the expansion frame expands, playing a sealing role.

[0016] Furthermore, the expansion assembly further includes an adjustment groove, a U-shaped seat, a connecting rod, an adjustment ring, a guide frame, and a guide chute. An adjustment groove is provided on the lower side surface of the connecting plate. On the inner arc surface of the adjustment groove close to the center of the connecting plate, uniformly distributed guide frames are provided. On the upper side surface of the adjustment ring, uniformly distributed guide chutes are provided, and the upper sides of the guide chutes are slidably connected to the adjacent guide frames. On one side of the expansion frame close to the center of the connecting plate, U-shaped seats are provided. On the outer arc surface of the adjustment ring, U-shaped seats are also uniformly distributed. A connecting rod is rotatably connected between two adjacent U-shaped seats up and down, making the adjustment of the expansion assembly more accurate and stable, capable of adjusting the expansion degree of the expansion frame according to actual needs, and meeting different usage requirements.

[0017] Furthermore, the expansion assembly further includes an adjustment bolt, an adjustment shaft, an adjustment hole, and a bearing. An adjustment bolt is threadedly connected to the middle of the connecting plate. The lower end surface of the adjustment bolt is provided with an adjustment shaft, and the lower end of the adjustment shaft is provided with a bearing. An adjustment hole is provided on the upper side surface of the adjustment ring, and the inner wall of the adjustment hole is fixedly connected to the outer surface of the outer ring of the bearing. The setting of the bearing reduces the friction force during the adjustment process, makes the adjustment easier and more accurate, and at the same time ensures the smooth relative rotation between the adjustment shaft and the adjustment ring, improving the adjustment performance and service life of the expansion assembly.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: This conical sleeve-connected porcelain bushing insulator has the following advantages:

[0019] 1. The porcelain bushing of this porcelain bushing insulator is composed of a left half porcelain bushing and a right half porcelain bushing. Structures such as the guide groove and guide protrusion, groove and rubber protrusion in the connection assembly make the disassembly and installation of the left and right half porcelain bushings relatively simple. When a certain component inside the insulator fails and needs to be repaired or replaced, the porcelain bushing can be quickly separated for operation, reducing the maintenance time and difficulty. Moreover, during the maintenance process, structures such as fiberglass binding straps, limit frames, and stabilizing frames can be easily disassembled and reinstalled without damaging the overall structure of the porcelain bushing, facilitating maintenance personnel to inspect, repair, and replace internal components, improving the maintenance efficiency, and reducing the maintenance cost.

[0020] 2. After the left half porcelain bushing and the right half porcelain bushing are connected to form a complete porcelain bushing, the wavy spring piece in the internal guide groove supports the sealing strip to closely fit the guide protrusion, the sealing groove cooperates with the sealing block, and the arc-shaped wavy spring piece supports the arc-shaped sealing strip to closely fit the sealing block. The multi-channel sealing structure effectively prevents external water vapor, dust, and other impurities from entering the interior of the porcelain bushing, preventing rainwater, dirt, etc. from contacting the internal conductive components, greatly improving the overall sealing performance of the porcelain bushing, ensuring the stability of the insulation performance, and extending the service life of the insulator.

[0021] 3. When this porcelain bushing insulator is connected to external equipment, the expansion component can be adjusted through the adjusting bolt to achieve the outward expansion or inward contraction of the expansion frame, enabling it to be tightly connected to external equipment of different specifications. During the connection process, the sealing ring on the outer arc surface of the expansion frame can fill the gap with the external equipment, enhancing the sealing performance, ensuring a firm and waterproof connection, and improving the versatility and reliability of the insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a schematic structural diagram of a partial explosion of the present invention;

[0024] Figure 3 is a schematic enlarged structural diagram at position A of the present invention;

[0025] Figure 4 is a schematic enlarged structural diagram at position B of the present invention;

[0026] Figure 5 is a schematic top view of a cross-section of the upper end of the present invention;

[0027] Figure 6 is a schematic enlarged structural diagram at position C of the present invention;

[0028] Figure 7 is a schematic cross-sectional view of the front end of the locking ring of the present invention;

[0029] Figure 8 is a schematic cross-sectional view of the right side of the locking ring of the present invention;

[0030] Figure 9 is a schematic cross-sectional view of the front end of the connecting plate of the present invention;

[0031] Figure 10 is a schematic enlarged structural diagram at position D of the present invention;

[0032] Figure 11 is a schematic enlarged structural diagram at position E of the present invention;

[0033] Figure 12 is a schematic cross-sectional view of a part of the connecting plate of the present invention;

[0034] Figure 13 is a schematic top view of the connecting plate of the present invention;

[0035] Figure 14 is a schematic enlarged structural diagram at position F of the present invention.

[0036] In the figure: 1 porcelain bushing, 11 left half porcelain bushing, 12 right half porcelain bushing, 2 connecting component, 21 guiding groove, 22 guiding protrusion, 23 groove, 24 rubber protrusion, 25 mounting seat, 26 fiberglass binding tape, 27 limiting frame, 28 stabilizing frame, 3 sealing component, 31 corrugated spring piece, 32 sealing strip, 33 arc-shaped corrugated spring piece, 34 arc sealing strip, 35 sealing block, 36 sealing groove, 4 locking component, 41 locking ring, 42 inverted cone groove, 43 connecting plate, 44 through hole, 45 sealing ring, 46 bolt, 47 nut, 5 expanding component, 501 adjusting groove, 502 expanding frame, 503 sealing ring, 504 dovetail slider, 505 dovetail groove, 506 sliding groove, 507 roller, 508 U-shaped seat, 509 connecting rod, 510 adjusting ring, 511 guiding frame, 512 guiding sliding groove, 513 adjusting bolt, 514 adjusting shaft, 515 adjusting hole, 516 bearing, 6 tapered neck, 7 straight neck. Specific embodiments

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1-14 , this embodiment provides a technical solution: a tapered sleeve type connecting porcelain bushing insulator, including a porcelain bushing 1, a tapered neck 6 is arranged at the lower end of the porcelain bushing 1, a straight neck 7 is arranged at the lower end of the tapered neck 6, a locking component 4 for locking the tapered neck 6 is arranged at the lower end of the porcelain bushing 1, the locking component 4 includes a locking ring 41, an inverted cone groove 42, a connecting plate 43, a through hole 44 and a sealing ring 45, an inverted cone groove 42 is formed inside the locking ring 41, the tapered neck 6 is located inside the inverted cone groove 42 and is arranged in cooperation with the inverted cone groove 42, a connecting plate 43 is arranged on the lower side of the locking ring 41, a through hole 44 is formed in the middle of the connecting plate 43, the lower end of the straight neck 7 passes through the through hole 44, a sealing ring 45 is arranged on the upper side of the connecting plate 43, the upper side of the sealing ring 45 contacts the lower side of the tapered neck 6, the locking component 4 further includes a bolt 46 and a nut 47, uniformly distributed connecting holes are formed in the middle of both the locking ring 41 and the connecting plate 43, bolts 46 are inserted into the inner parts of two adjacent upper and lower connecting holes, nuts 47 are threadedly connected to the lower ends of the bolts 46, and a connecting component 2 is further included;

[0039] Connecting assembly 2: it includes a guide groove 21 and a guide protrusion 22, the porcelain sleeve 1 includes a left half porcelain sleeve 11 and a right half porcelain sleeve 12 (the outer arc surfaces of the left half porcelain sleeve and the right half porcelain sleeve are respectively provided with evenly distributed large and small half umbrella skirts, when the left half porcelain sleeve and the right half porcelain sleeve are connected, the large and small half umbrella skirts form a complete umbrella skirt) (the upper end of the right half porcelain sleeve is provided with a conductive rod, and the lower end of the conductive rod is located inside the porcelain sleeve composed of the left half porcelain sleeve and the right half porcelain sleeve), the large and small half umbrella skirts arranged on the outer arc surfaces of the left half porcelain sleeve 11 and the right half porcelain sleeve 12 form a complete umbrella skirt after the left half porcelain sleeve 11 and the right half porcelain sleeve 12 are connected, and its main function is to increase the creepage distance and improve the insulation performance of the insulator. In rainy weather, the umbrella skirt can effectively block the conductive path formed by rainwater to prevent flashover and ensure insulation. The insulator can operate reliably in harsh environments to ensure the safety of power transmission. The conductive rod at the upper end of the right half porcelain sleeve 12 is responsible for introducing the current of the wire into transformers, switches and other equipment, or extracting the current generated by the equipment. The cone neck 6 is fixedly connected to the lower end of the left half porcelain sleeve 11. The right sides of the front and rear ends of the left half porcelain sleeve 11 are provided with guide grooves 21, and the left sides of the front and rear ends of the right half porcelain sleeve 12 are provided with guide protrusions 22. The guide protrusions 22 are slidably connected to the adjacent guide grooves 21 on the left side. The connecting component 2 also includes a groove 23 and a rubber protrusion 24. The upper side surface of the upper end of the left half porcelain sleeve 11 and the upper side surface of the lower end of the left half porcelain sleeve 11 are provided with rubber protrusions 24. The upper lower side surface of the right half porcelain sleeve 12 and the lower side surface of the right half porcelain sleeve 12 are provided with grooves 2 3, the rubber protrusion 24 is evenly inserted into the groove 23 adjacent to the upper side, the connection component 2 also includes a mounting seat 25, a glass fiber binding belt 26, a limit frame 27 and a stabilizing frame 28, the rear end of the outer arc surface of the right half porcelain sleeve 12 is provided with an evenly distributed mounting seat 25, the left side of the mounting seat 25 is provided with a glass fiber binding belt 26, the glass fiber binding belt 26 bypasses the outer arc surface of the left half porcelain sleeve 11, the front end of the outer arc surface of the right half porcelain sleeve 12 is provided with an evenly distributed limit frame 27, the right end of the glass fiber binding belt 26 is provided with a stabilizing frame 28, and the stabilizing frame 28 is clamped with the limit frame 27 adjacent to the right side, a sealing component 3 is provided between the left half porcelain sleeve 11 and the right half porcelain sleeve 12, the sealing component 3 includes a wavy spring sheet 31 and a sealing strip 32, the front of the guide groove 21 The rear inner wall is provided with a sealing strip 32 through a wavy spring sheet 31, the wavy spring sheet 31 is a wavy spring steel sheet, the sealing strip 32 is a rubber sealing strip, the relative inner sides of the two sealing strips 32 are slidably connected with the outer side of the guide protrusion 22 located inside the same guide groove 21, the sealing assembly 3 also includes an arc-shaped wavy spring sheet 33, an arc-shaped sealing strip 34, a sealing block 35 and a sealing groove 36, the upper side surface of the upper end of the left half porcelain sleeve 11 and the upper side surface of the lower end of the left half porcelain sleeve 11 are both provided with a sealing groove 36, the left and right inner arc surfaces of the sealing groove 36 are both provided with an arc-shaped wavy spring sheet 33 through the arc-shaped wavy spring sheet 33, the arc-shaped sealing strip 34 is an arc-shaped sealing rubber strip, the arc-shaped wavy spring sheet 33 is an arc-shaped wavy spring steel sheet,Sealing blocks 35 are provided on the lower side of the upper end and the lower side of the right half porcelain bushing 12. The sealing blocks 35 are sealing porcelain blocks. The relative inner arc surfaces of the two arc-shaped sealing strips 34 located inside the same sealing groove 36 are slidably connected to the outer arc surfaces of the adjacent upper sealing blocks 35. When installing the porcelain bushing 1, first dock the left half porcelain bushing 11 and the right half porcelain bushing 12. The guiding protrusions 22 on the left side surfaces at the front and rear ends of the right half porcelain bushing 12 slide along the guiding grooves 21 on the right side surfaces at the front and rear ends of the left half porcelain bushing 11 to achieve preliminary positioning. During this process, the wavy spring pieces 31 in the guiding grooves 21 support the sealing strips 32, making the sealing strips 32 closely fit the guiding protrusions 22, preventing external moisture, dust and other impurities from entering the internal connection gaps of the porcelain bushing 1 and playing a preliminary sealing role. At the same time, the rubber protrusions 24 on the left half porcelain bushing 11 are inserted into the grooves 23 of the right half porcelain bushing 12, which not only further assists in positioning but also enhances the connection stability. The rubber material can also provide a certain sealing effect. After the porcelain bushing 1 is docked, it is fixed by the locking assembly 4. Subsequently, bolts 46 are inserted into the connection holes opened in the connecting plate 43, the locking ring 41 and the side wall of the external device and the nuts 47 are tightened to tightly connect the three. During this process, the locking ring 41 is subjected to an axially downward force, thereby clamping the tapered neck 6. At this time, the sealing ring 45 on the connecting plate 43 contacts the lower side surface of the tapered neck 6. The sealing ring 45 is a rubber sealing ring to form a seal to prevent moisture and the like from entering from the lower end of the porcelain bushing 1 and protecting the internal structure from erosion. Subsequently, the expansion assembly 5 is adjusted to achieve a tight connection between the insulator and the external device. During this process, the locking ring 41 is subjected to an axially downward force, thereby clamping the tapered neck 6. At this time, the sealing ring 45 on the connecting plate 43 contacts the lower side surface of the tapered neck 6 to form a seal to prevent moisture and the like from entering from the lower end of the porcelain bushing 1 and protecting the internal structure from erosion. The porcelain bushing 1 has a split design. During the operation of the insulator, the sealing assembly 3 continuously plays a role. In addition to the sealing structure at the guiding grooves 21, the sealing grooves 36 on the left half porcelain bushing 11 cooperate with the sealing blocks 35 on the right half porcelain bushing 12. The arc-shaped wavy spring pieces 33 support the arc-shaped sealing strips 34 to closely fit the sealing blocks 35, further improving the overall sealing performance of the porcelain bushing 1, preventing rainwater, dirt and the like from contacting the internal conductive components and ensuring the stability of the insulation performance. At the same time, the mounting seat 25, the fiberglass binding tape 26, the limiting frame 27 and the stabilizing frame 28 on the outer arc surface of the right half porcelain bushing 12 work together. The fiberglass binding tape 26 bypasses the outer arc surface of the left half porcelain bushing 11, and the stabilizing frame 28 at its right end is clamped into the inside of the limiting frame 27, enhancing the connection stability between the left and right half porcelain bushings, enabling the insulator to withstand various external forces during long-term use without loosening, ensuring the safety and reliability of power transmission and being convenient for maintenance while ensuring its sealing performance;

[0040] Among them: The lower end of the locking component 4 is provided with an expansion component 5 for connecting with an external device. The expansion component 5 includes an expansion frame 502, a sealing ring 503, a dovetail slider 504, a dovetail groove 505, a chute 506 and a roller 507. The lower side surface of the connecting plate 43 is provided with evenly distributed dovetail grooves 505. The inside of each dovetail groove 505 is slidably connected with a dovetail slider 504. The lower ends of the dovetail sliders 504 are all provided with an expansion frame 502. A sealing ring 503 is sleeved between the outer arc surfaces of the expansion frames 502. The inclined inner walls of the dovetail grooves 505 are all provided with chutes 506. Between the upper and lower inner walls of each chute 506, evenly distributed rollers 507 are rotatably connected. The rollers 507 are all in contact with the inclined surfaces of the dovetail sliders 504 located inside the same dovetail groove 505. The expansion component 5 further includes an adjustment groove 501, a U-shaped seat 508, a connecting rod 509, an adjustment ring 510, a guide frame 511 and a guide chute 512. The lower side surface of the connecting plate 43 is provided with an adjustment groove 501. The inner arc surface of the adjustment groove 501 close to the center of the connecting plate 43 is provided with evenly distributed guide frames 511. The upper side surface of the adjustment ring 510 is provided with evenly distributed guide chutes 512. The guide chutes 512 are slidably connected with the adjacent guide frames 511 above. The sides of the expansion frames 502 close to the center of the connecting plate 43 are all provided with U-shaped seats 508. The outer arc surfaces of the adjustment rings 510 are also provided with evenly distributed U-shaped seats 508. Between two adjacent upper and lower U-shaped seats 508, connecting rods 509 are rotatably connected. The expansion component 5 further includes an adjustment bolt 513, an adjustment shaft 514, an adjustment hole 515 and a bearing 516. The middle part of the connecting plate 43 is threadedly connected with an adjustment bolt 513 (an operation groove is provided in the middle part of the locking ring 41. The upper end of the adjustment bolt 513 is located inside the operation groove. Workers can insert a wrench into the operation groove to twist the adjustment bolt 513). The lower end surface of the adjustment bolt 513 is provided with an adjustment shaft 514. The lower end of the adjustment shaft 514 is provided with a bearing 516. The upper side surface of the adjustment ring 510 is provided with an adjustment hole 515. The inner wall of the adjustment hole 515 is fixedly connected with the outer surface of the outer ring of the bearing 516, (the outer surface of the lower end of the adjustment shaft 514 is fixedly connected with the inner wall of the inner ring of the bearing 516). Adjusting the expansion component 5 realizes the tight connection between the insulator and the external device. Rotate the adjustment bolt 513. The adjustment bolt 513 drives the adjustment shaft 514 to rotate. Since the bearing 516 at the lower end of the adjustment shaft 514 is fixedly connected with the outer ring of the adjustment hole 515 on the adjustment ring 510, the adjustment ring 510 will move axially along the adjustment groove 501 under the constraint of the guide frame 511 and the guide chute 512. When the adjustment ring 510 moves, it drives the expansion frame 502 to move through the connecting rod 509. The upper and lower ends of the connecting rod 509 rotate inside the corresponding U-shaped seats 508. During this process, the dovetail sliders 504 at the upper ends of the expansion frames 502 slide in the dovetail grooves 505. The rollers 507 on the inclined inner walls of the dovetail grooves 505 reduce the friction when the dovetail sliders 504 slide, enabling the expansion frame 502 to expand outward or contract inward smoothly (the sealing ring 503 is an elastic rubber sealing ring,When the expansion frame 502 expands outward or contracts inward, it will continuously contract. The sealing ring 503 sleeved on the outer arc surface of the expansion frame 502 can fill the gap between the expansion frame 502 and the external device when the expansion frame 502 is connected to the external device, enhance the sealing performance, ensure a firm and waterproof connection, and facilitate connection with different devices.

[0041] The working principle of a taper - sleeve - type connected porcelain bushing insulator provided by the present invention is as follows: When installing the porcelain bushing 1, first dock the left - half porcelain bushing 11 and the right - half porcelain bushing 12. The guiding protrusions 22 on the left - hand sides of the front and rear ends of the right - half porcelain bushing 12 slide along the guiding grooves 21 on the right - hand sides of the front and rear ends of the left - half porcelain bushing 11 to achieve preliminary positioning. During this process, the wavy spring pieces 31 in the guiding grooves 21 support the sealing strip 32, making the sealing strip 32 closely fit the guiding protrusions 22, preventing external moisture, dust and other impurities from entering the internal connection gap of the porcelain bushing 1, playing a preliminary sealing role. At the same time, the rubber protrusions 24 on the left - half porcelain bushing 11 are inserted into the grooves 23 of the right - half porcelain bushing 12, which not only further assists in positioning but also enhances the connection stability. The rubber material can also provide a certain sealing effect. After the porcelain bushing 1 is docked, it is fixed by the locking assembly 4. Subsequently, bolts 46 are inserted into the connection holes opened on the connecting plate 43, the locking ring 41 and the side wall of the external device, and nuts 47 are tightened to tightly connect the three. During this process, the locking ring 41 receives an axially downward force, thereby clamping the taper neck 6. At this time, the sealing ring 45 on the connecting plate 43 contacts the lower side surface of the taper neck 6 to form a seal, preventing moisture and the like from entering from the lower end of the porcelain bushing 1 and protecting the internal structure from erosion. Subsequently, the expansion assembly 5 is adjusted to achieve a tight connection between the insulator and the external device. Rotate the adjusting bolt 513, and the adjusting bolt 513 drives the adjusting shaft 514 to rotate. Since the bearing 516 at the lower end of the adjusting shaft 514 is fixed to the outer ring of the adjusting hole 515 on the adjusting ring 510, the adjusting ring 510 will move axially along the adjusting groove 501 under the restraint of the guiding frame 511 and the guiding chute 512. When the adjusting ring 510 moves, it drives the expansion frame 502 to move through the connecting rod 509. The upper and lower ends of the connecting rod 509 rotate inside the corresponding U - shaped seats 508. During this process, the dovetail slider 504 at the upper end of the expansion frame 502 slides in the dovetail groove 505, and the rollers 507 on the inclined inner wall of the dovetail groove 505 reduce the friction force when the dovetail slider 504 slides, enabling the expansion frame 502 to smoothly expand outward or contract inward (the sealing ring 503 is an elastic rubber sealing ring, and it will continuously contract when the expansion frame 502 expands outward or contracts inward). The sealing ring 503 sleeved on the outer arc surface of the expansion frame 502 can fill the gap between the expansion frame 502 and the external device when the expansion frame 502 is connected to the external device, enhancing the sealing performance and ensuring a firm and waterproof connection. During the working process of the insulator, the sealing assembly 3 continuously plays a role. In addition to the sealing structure at the guiding groove 21, the sealing groove 36 on the left - half porcelain bushing 11 cooperates with the sealing block 35 on the right - half porcelain bushing 12, and the arc - shaped wavy spring piece 33 supports the arc - shaped sealing strip 34 to closely fit the sealing block 35, further improving the overall sealing performance of the porcelain bushing 1, preventing rain, dirt, etc. from contacting the internal conductive components, and ensuring the stability of the insulation performance. At the same time, the mounting seat 25, the fiberglass binding band 26, the limiting frame 27 and the stabilizing frame 28 on the outer arc surface of the right - half porcelain bushing 12 work together. The fiberglass binding band 26 bypasses the outer arc surface of the left - half porcelain bushing 11, and the stabilizing frame 28 at its right end is snapped into the internal part of the limiting frame 27.The stability of the connection between the left and right half-porcelain sleeves is enhanced, so that the insulator can withstand various external forces without loosening during long-term use, ensuring safe and reliable power transmission. The large and small half-umbrella skirts set on the outer arc surface of the left half-porcelain sleeve 11 and the right half-porcelain sleeve 12 form a complete umbrella skirt after the left half-porcelain sleeve 11 and the right half-porcelain sleeve 12 are connected. Its main function is to increase the creepage distance and improve the insulation performance of the insulator. In rainy weather, the umbrella skirt can effectively block the conductive path formed by rainwater to prevent flashover, ensuring that the insulator can operate reliably in harsh environments and ensuring safe power transmission. The conductive rod at the upper end of the right half-porcelain sleeve 12 is responsible for introducing the current of the wire into transformers, switches and other equipment, or exporting the current generated by the equipment.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tapered sleeve type connecting porcelain bushing insulator, comprising a porcelain bushing (1), a tapered neck (6) is disposed at the lower end of the porcelain bushing (1), a straight neck (7) is provided at the lower end of the tapered neck (6), and a locking assembly (4) for locking the tapered neck (6) is provided at the lower end of the porcelain bushing (1), characterized in that: It further includes a connecting component (2); Connecting component (2): It includes a guiding groove (21) and a guiding projection (22). The porcelain bushing (1) includes a left half porcelain bushing (11) and a right half porcelain bushing (12). The tapered neck (6) is fixedly connected to the lower end of the left half porcelain bushing (11). Guiding grooves (21) are formed on the right side surfaces of the front and rear ends of the left half porcelain bushing (11). Guiding projections (22) are provided on the left side surfaces of the front and rear ends of the right half porcelain bushing (12). The guiding projections (22) are all slidably connected to the adjacent guiding grooves (21) on the left side. A sealing component (3) is provided between the left half porcelain bushing (11) and the right half porcelain bushing (12); Wherein: The lower end of the locking component (4) is provided with an expansion component (5) for connecting to an external device.

2. The conical sleeve type connecting porcelain bushing insulator according to claim 1, characterized in that: The connecting component (2) further includes a groove (23) and a rubber projection (24). Rubber projections (24) are provided on the upper side surface of the upper end of the left half porcelain bushing (11) and the upper side surface of the lower end of the left half porcelain bushing (11). Grooves (23) are formed on the lower side surface of the upper end of the right half porcelain bushing (12) and the lower side surface of the right half porcelain bushing (12). The rubber projections (24) are inserted into the adjacent grooves (23) on the upper side.

3. A tapered sleeve type connecting porcelain bushing insulator according to claim 1, characterized in that: The connecting component (2) further includes a mounting seat (25), a fiberglass binding tape (26), a limiting frame (27) and a stabilizing frame (28). The rear end of the outer arc surface of the right half porcelain bushing (12) is provided with evenly distributed mounting seats (25). Fiberglass binding tapes (26) are provided on the left sides of the mounting seats (25). The fiberglass binding tapes (26) all bypass the outer arc surface of the left half porcelain bushing (11). The front end of the outer arc surface of the right half porcelain bushing (12) is provided with evenly distributed limiting frames (27). Stabilizing frames (28) are provided at the right ends of the fiberglass binding tapes (26). The stabilizing frames (28) are all snap-connected to the adjacent limiting frames (27) on the right side.

4. A tapered sleeve type connecting porcelain bushing insulator according to claim 1, characterized in that: The sealing component (3) includes a corrugated spring piece (31) and a sealing strip (32). Sealing strips (32) are provided on the front and rear inner walls of the guiding groove (21) through the corrugated spring piece (31). The opposite inner side surfaces of the two sealing strips (32) are all slidably connected to the outer side surface of the guiding projection (22) located inside the same guiding groove (21).

5. A tapered sleeve type connecting porcelain bushing insulator according to claim 1, characterized in that: The sealing component (3) further includes an arc-shaped corrugated spring piece (33), an arc-shaped sealing strip (34), a sealing block (35) and a sealing groove (36). Sealing grooves (36) are formed on the upper side surface of the upper end of the left half porcelain bushing (11) and the upper side surface of the lower end of the left half porcelain bushing (11). Arc-shaped sealing strips (34) are provided on the left and right inner arc surfaces of the sealing grooves (36) through the arc-shaped corrugated spring piece (33). Sealing blocks (35) are provided on the lower side surface of the upper end of the right half porcelain bushing (12) and the lower side surface of the right half porcelain bushing (12). The opposite inner arc surfaces of the two arc-shaped sealing strips (34) located inside the same sealing groove (36) are all slidably connected to the outer arc surface of the adjacent sealing block (35) on the upper side.

6. The taper sleeve type connecting porcelain bushing insulator according to claim 1, characterized in that: The locking assembly (4) includes a locking ring (41), an inverted cone groove (42), a connecting plate (43), a through hole (44) and a sealing ring (45). An inverted cone groove (42) is formed inside the locking ring (41). The taper neck (6) is located inside the inverted cone groove (42) and is arranged in cooperation with the inverted cone groove (42). A connecting plate (43) is arranged in cooperation with the lower side of the locking ring (41). A through hole (44) is formed in the middle of the connecting plate (43). The lower end of the straight neck (7) passes through the through hole (44). A sealing ring (45) is arranged on the upper side surface of the connecting plate (43), and the upper side surface of the sealing ring (45) contacts the lower side surface of the taper neck (6).

7. The conical sleeve type connecting porcelain bushing insulator according to claim 6, characterized in that: The locking assembly (4) further includes bolts (46) and nuts (47). Uniformly distributed connecting holes are formed in the middle of both the locking ring (41) and the connecting plate (43). Bolts (46) are inserted into the two vertically adjacent connecting holes, and nuts (47) are threadedly connected to the lower ends of the bolts (46).

8. The cone sleeve type connected porcelain bushing insulator according to claim 6, characterized in that: The expansion assembly (5) includes an expansion frame (502), a sealing ring (503), a dovetail slider (504), a dovetail groove (505), a chute (506) and rollers (507). Uniformly distributed dovetail grooves (505) are formed in the lower side surface of the connecting plate (43). Dovetail sliders (504) are slidably connected inside the dovetail grooves (505). Expansion frames (502) are arranged at the lower ends of the dovetail sliders (504). A sealing ring (503) is sleeved between the outer arc surfaces of the expansion frames (502). Chutes (506) are formed in the inclined inner walls of the dovetail grooves (505). Uniformly distributed rollers (507) are rotatably connected between the upper and lower inner walls of the chutes (506), and the rollers (507) contact the inclined surfaces of the dovetail sliders (504) located inside the same dovetail groove (505).

9. The conical sleeve type connecting porcelain bushing insulator according to claim 8, characterized in that: The expansion assembly (5) further includes an adjustment groove (501), a U-shaped seat (508), a connecting rod (509), an adjustment ring (510), a guide frame (511) and a guide chute (512). An adjustment groove (501) is formed in the lower side surface of the connecting plate (43). Uniformly distributed guide frames (511) are arranged on the inner arc surface of one side of the adjustment groove (501) close to the center of the connecting plate (43). Uniformly distributed guide chutes (512) are formed in the upper side surface of the adjustment ring (510), and the guide chutes (512) are slidably connected to the adjacent guide frames (511) above. U-shaped seats (508) are arranged on one side of each expansion frame (502) close to the center of the connecting plate (43). U-shaped seats (508) are also uniformly distributed on the outer arc surface of the adjustment ring (510). Connecting rods (509) are rotatably connected between two vertically adjacent U-shaped seats (508).

10. A tapered sleeve type connecting porcelain bushing insulator according to claim 9, characterized in that: The expansion assembly (5) further includes an adjusting bolt (513), an adjusting shaft (514), an adjusting hole (515), and a bearing (516). An adjusting bolt (513) is threadedly connected to the middle of the connecting plate (43). An adjusting shaft (514) is provided on the lower end surface of the adjusting bolt (513). A bearing (516) is provided at the lower end of the adjusting shaft (514). An adjusting hole (515) is formed in the upper side surface of the adjusting ring (510). The inner wall of the adjusting hole (515) is fixedly connected to the outer surface of the outer ring of the bearing (516).

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