An electric porcelain insulator with a self - contained installation and positioning structure

Abstract

The present invention relates to the technical field of porcelain insulators, and specifically relates to an electric porcelain insulator with a self - contained installation and positioning structure, including a porcelain insulator body. An upper metal connecting piece is fixedly installed at the upper end of the porcelain insulator body. The beneficial effects are as follows: An upper installation and positioning structure is designed to fix the wire. The cooperation between the upper positioning seat and the metal cap enables the upper installation and positioning structure to buffer and automatically adjust and correct the position after fixing the wire along with the wind deflection of the wire. The lower metal connecting piece mainly facilitates the installation of the porcelain insulator body on the cross - arm. And through the insulating sealing block fixed on the fixing bolt, the fixing bolt is locked after being fixedly installed on the cross - arm, avoiding the loosening of the fixing bolt. Inside the current protection and fusing structure, a grounding - lead fusing wire and a fusing tube are arranged. The lead wire at the lower end of the grounding - lead fusing wire is connected to a dedicated grounding wire in the line transmission system to lead out the current on the surface of the wire, avoiding the problem of flashover caused by partial discharge.

Description

Technical Field

[0001] The present invention belongs to the technical field of porcelain insulators, and particularly relates to an electric porcelain insulator with a built-in installation and positioning structure. Background Art

[0002] An electric porcelain insulator is a porcelain insulator applied to a power transmission system, which is a key component widely used in a power transmission system. It is mainly used to support and insulate wires to prevent current leakage to the ground or other conductors. A porcelain insulator generally consists of the following parts: the porcelain body is the main part, which is fired from raw materials such as kaolin and quartz sand, and is coated with a glaze layer on the surface. The metal fittings include the metal cap at the top and the metal base at the bottom at the upper and lower ends, which are used to connect the wires and the support structure as well as the seal. The seal is located between the metal fittings and the porcelain body to ensure good electrical insulation performance. The specific installation method is that the upper end of the porcelain insulator is connected to the wire or fitting through the metal cap, and the lower end of the porcelain insulator is fixed on the pole or cross arm through the metal base, providing necessary electrical isolation while playing a supporting role. In the prior art, since porcelain insulators are generally installed and fixed in different ways by screws at high altitude, the operation is inconvenient. At the same time, the fastening operation is cumbersome and it is not convenient for later disassembly and replacement.

[0003] A Chinese patent document with the publication number CN117275848A proposes an electric porcelain insulator with a built-in installation and positioning structure, which adopts an electric porcelain insulator body, a cross arm, an installation block, a square sleeve groove, a first circular groove, a positioning circular groove, a rotating sleeve ring, a rack, a gear, a bidirectional threaded shaft, a positioning component, a first fixing component, a second fixing component and a one-way adjustment fixing piece, so that the electric porcelain insulator has a built-in installation and positioning structure, and the installation and fixing of the electric porcelain insulator are convenient to solve the above problems. However, when using the engagement of the gear and the rack for installation and positioning, under the action of strong wind outdoors, the gear and the rack will experience continuous vibration, which may lead to rapid wear of the contact surface, reducing its strength and durability. In addition, the tooth profile structure of the gear and the rack is prone to form a tip effect, increasing the local electric field strength, thereby causing corona discharge, increasing the possibility of uneven surface resistivity, and increasing the risk of partial discharge or flashover.

[0004] Therefore, the present invention proposes an electric porcelain insulator with a built-in installation and positioning structure, which solves the problems that the metal installation components of porcelain insulators in the prior art are prone to wear and partial discharge in a strong wind environment. By designing an installation and positioning structure at both ends of the porcelain insulator and a self-healing fuse structure inside it, the porcelain insulator not only has the functions of overcurrent protection and electrical insulation but also is convenient for installation. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an electric porcelain insulator with a built-in installation and positioning structure to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: an electric porcelain insulator with a built-in installation and positioning structure, including a porcelain insulator body, an upper metal connector is fixedly installed at the upper end of the porcelain insulator body, a lower metal connector is fixedly installed at the lower end of the porcelain insulator body, an upper installation and positioning structure is arranged above the upper metal connector, the upper installation and positioning structure includes an upper positioning seat and a metal cap, and a current protection fusing structure is arranged inside the porcelain insulator body, and the current protection fusing structure includes a fusing insulation protection sleeve, a fusing tube and a grounding lead-out fusing wire.

[0007] Preferably, the lower end of the upper positioning seat is fixedly connected to the upper end of the upper metal connector, wind deflection movable grooves are symmetrically formed on the side wall of the upper positioning seat, a wire upper installation seat is rotatably installed on the upper surface of the upper positioning seat, a metal contact pad is fixedly installed inside the wire upper installation seat, the lower surface of the metal contact pad is fixedly connected to the upper end of the grounding lead-out fusing wire, sealing locking rings are arranged on both sides of the metal contact pad, and an insulation seal member I adapted to the grounding lead-out fusing wire is fixedly installed inside the upper metal connector.

[0008] Preferably, the metal cap is sleeved outside the upper positioning seat, a wire lower installation seat is rotatably installed inside the metal cap, a buckling pad is fixedly installed on the lower surface of the metal cap, a card slot adapted to the metal contact pad is arranged on the lower surface of the buckling pad, locking hoops are fixedly installed at both ends of the buckling pad, and locking holes adapted to the locking hoops are arranged inside the sealing locking ring.

[0009] Preferably, a sector-shaped movable plate is fixedly installed on the upper surface of the wire lower installation seat, a wind deflection buffer groove adapted to the sector-shaped movable plate is arranged inside the metal cap, correcting springs are symmetrically and fixedly installed on both sides inside the wind deflection buffer groove, one end of each correcting spring is fixedly connected to the side wall of the sector-shaped movable plate, a correcting magnet I is fixedly installed on the upper surface of the sector-shaped movable plate, and a correcting magnet II adapted to the correcting magnet I is fixedly installed above the metal cap.

[0010] Preferably, the upper and lower ends of the porcelain insulator body are respectively fixedly connected to the inner walls of one ends of the upper metal connector and the lower metal connector, connection seal members are fixedly installed on the outer surfaces of the upper and lower ends of the fusing insulation protection sleeve, the fusing insulation protection sleeve is fixedly installed inside the porcelain insulator body through the connection seal members, and a sand heat dissipation cavity is arranged between the fusing insulation protection sleeve and the connection seal members.

[0011] Preferably, an insulating seal II is arranged inside the lower metal connector. A fuse wire insulating plugging block is fixedly installed in the middle of the insulating seal II. The lower end of the grounding lead-out fuse wire is fixedly connected to the upper part of the inner wall of the fuse wire insulating plugging block. A fixing bolt is arranged below the insulating seal II. A clamping hole adapted to the fixing bolt is arranged on the lower part of the inner wall of the fuse wire insulating plugging block.

[0012] Preferably, an insulating seal block and a locking block are fixedly installed outside the fixing bolt. An installation groove adapted to the insulating seal block and the locking block is arranged inside the insulating seal II. A locking pin is arranged on the outer side of the locking block. A locking groove adapted to the locking pin is arranged on the side wall of the insulating seal II.

[0013] Preferably, insulating core layers are symmetrically arranged on the upper and lower sides inside the fuse insulating protective sleeve. A fuse tube is arranged between the two groups of insulating core layers. There are three groups of fuse tubes. Clamps are fixedly installed between the three groups of fuse tubes. Pressure relief holes are symmetrically formed in the side walls of the three groups of fuse tubes. A buffer corrugated ring is arranged on the side wall of the fuse insulating protective sleeve. The position of the buffer corrugated ring corresponds to the position of the pressure relief hole one by one.

[0014] Preferably, a self-healing cavity is arranged in the middle of the fuse tube. Self-healing extrusion dies are symmetrically arranged on both sides of the self-healing cavity. An elastic pushing pad is fixedly installed between the outer surface of the self-healing extrusion die and the inner surface of the self-healing cavity. A fuse opening is formed in the middle of the grounding lead-out fuse wire. The position of the fuse opening corresponds to the position of the self-healing extrusion die one by one.

[0015] Preferably, inner density gaskets are symmetrically and fixedly installed on the upper and lower sides inside the fuse tube. A reset spring is fixedly installed on the inner surface of the inner density gasket. One end of the reset spring is fixedly installed with a pressure relief ring. Chute adapted to the pressure relief ring are arranged at the upper and lower ends of the self-healing cavity.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] By designing an installation positioning structure to fix the wire, the upper positioning seat and the metal cap cooperate so that after the upper installation positioning structure fixes the wire, it can buffer and then automatically adjust and correct the position with the wind deflection of the wire. The lower metal connecting piece mainly facilitates the installation of the porcelain insulator body on the cross arm, and through the insulating sealing block fixed on the fixing bolt, the fixing bolt is locked after being fixedly installed on the cross arm to prevent the fixing bolt from loosening. The current protection fusing structure is internally provided with a grounding lead-out fuse wire and a fuse tube. The lead wire at the lower end of the grounding lead-out fuse wire is connected to a dedicated grounding wire in the line transmission system to lead out the current on the wire surface, avoiding the problem of flashover caused by partial discharge. At the same time, it can automatically disconnect during current overload to prevent overcurrent from causing permanent damage to the insulator, wire and other electrical equipment, and then can automatically recover, enabling the porcelain insulator body to have both overcurrent protection and electrical insulation functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the overall bottom view structure of the present invention;

[0020] Figure 3 is a schematic diagram of the overall installation structure of the present invention;

[0021] Figure 4 is a schematic diagram of the cross-sectional structure of the porcelain insulator body of the present invention;

[0022] Figure 5 is a schematic diagram of the disassembled structure of the present invention;

[0023] Figure 6 is a schematic diagram of the disassembled structure of the upper installation positioning structure of the present invention;

[0024] Figure 7 is a schematic diagram of the disassembled bottom view structure of the upper installation positioning structure of the present invention;

[0025] Figure 8 is a schematic diagram of the disassembled top view structure of the upper installation positioning structure of the present invention;

[0026] Figure 9 is a schematic diagram of the cross-sectional structure of the lower metal connecting piece of the present invention;

[0027] Figure 10 is a schematic diagram of the cross-sectional structure of the locking block of the present invention;

[0028] Figure 11 is a schematic diagram of the overall cross-sectional structure of the present invention;

[0029] Figure 12 is a schematic diagram of the cross-sectional structure of the fuse insulation protection sleeve of the present invention;

[0030] Figure 13 Schematic diagram of the internal structure of the fusing insulation protection sleeve of the present invention;

[0031] Figure 14 Schematic diagram of the internal structure of the fuse tube of the present invention.

[0032] In the figure: 1. Porcelain insulator body; 2. Upper metal connecting piece; 21. First insulating seal; 3. Upper installation and positioning structure; 31. Upper positioning seat; 311. Wind deviation moving groove; 312. Installation seat on the wire; 313. Metal contact pad; 314. Sealing and locking ring; 32. Metal cap; 321. Installation seat under the wire; 3211. Buckling pad; 3212. Locking hoop; 322. Sector moving plate; 3221. First correcting magnet; 323. Wind deviation buffer groove; 324. Correcting spring; 325. Second correcting magnet; 4. Lower metal connecting piece; 41. Fixed bolt; 42. Second insulating seal; 421. Fuse wire insulation plugging block; 43. Insulating seal block; 44. Locking block; 441. Locking pin; 5. Current protection fusing structure; 51. Fusing insulation protection sleeve; 52. Sand heat dissipation cavity; 53. Connecting seal; 54. Buffer corrugated ring; 55. Insulating core layer; 56. Fuse tube; 561. Chuck; 562. Pressure relief hole; 563. Internal density gasket; 5631. Pressure relief ring; 5632. Return spring; 564. Self-healing cavity; 5641. Self-healing extrusion die; 5642. Elastic pushing pad; 57. Grounding lead-out fuse wire; 571. Fusing port. Specific embodiments

[0033] In order to clearly and completely describe the purpose, technical solution of the present invention and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some embodiments of the present invention, rather than all embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] Example 1, please refer to Figures 1 to 14, the present invention provides a technical solution: an electric porcelain insulator with a built-in installation and positioning structure, which includes a porcelain insulator body 1. An upper metal connector 2 is fixedly installed at the upper end of the porcelain insulator body 1, and a lower metal connector 4 is fixedly installed at the lower end of the porcelain insulator body 1. An upper installation and positioning structure 3 is arranged above the upper metal connector 2. The upper installation and positioning structure 3 includes an upper positioning seat 31 and a metal cap 32. An overcurrent protection fuse structure 5 is arranged inside the porcelain insulator body 1. The overcurrent protection fuse structure 5 includes a fuse insulation protection sleeve 51, a fuse tube 56, and a grounding lead-out fuse wire 57. The lower end of the upper positioning seat 31 is fixedly connected to the upper end of the upper metal connector 2. Wind deflection movable grooves 311 are symmetrically formed on the side wall of the upper positioning seat 31. A wire upper installation seat 312 is rotatably installed on the upper surface of the upper positioning seat 31. A metal contact pad 313 is fixedly installed inside the wire upper installation seat 312. The lower surface of the metal contact pad 313 is fixedly connected to the upper end of the grounding lead-out fuse wire 57. Sealing and locking rings 314 are arranged on both sides of the metal contact pad 313. An insulating seal 21 adapted to the grounding lead-out fuse wire 57 is fixedly installed inside the upper metal connector 2. The metal cap 32 is sleeved outside the upper positioning seat 31. A wire lower installation seat 321 is rotatably installed inside the metal cap 32. A buckling pad 3211 is fixedly installed on the lower surface of the metal cap 32. A card slot adapted to the metal contact pad 313 is arranged on the lower surface of the buckling pad 3211. Locking hoops 3212 are fixedly installed at both ends of the buckling pad 3211. Locking holes adapted to the locking hoops 3212 are arranged inside the sealing and locking rings 314. A sector-shaped movable plate 322 is fixedly installed on the upper surface of the wire lower installation seat 321. A wind deflection buffer groove 323 adapted to the sector-shaped movable plate 322 is arranged inside the metal cap 32. Correction springs 324 are symmetrically and fixedly installed on both sides inside the wind deflection buffer groove 323. One end of the correction spring 324 is fixedly connected to the side wall of the sector-shaped movable plate 322. A first correction magnet 3221 is fixedly installed on the upper surface of the sector-shaped movable plate 322. A second correction magnet 325 adapted to the first correction magnet 3221 is fixedly installed above the metal cap 32;In this embodiment, the upper metal connecting piece 2 mainly serves to fixedly connect the upper mounting and positioning structure 3 and the porcelain insulator body 1. The upper mounting and positioning structure 3 is used to fix the wire, and through the cooperation of the upper positioning seat 31 and the metal cap 32, after the upper mounting and positioning structure 3 fixes the wire, it can automatically adjust and correct its position after buffering along with the wind deflection of the wire. The lower metal connecting piece 4 mainly facilitates the installation of the porcelain insulator body 1 on the cross arm, and through the insulating sealing block 43 fixed on the fixing bolt 41, the fixing bolt 41 is locked after being fixedly installed with the cross arm to prevent the fixing bolt 41 from loosening. Inside the current protection fusing structure 5, a grounding lead-out fusing wire 57 and a fusing tube 56 are provided. The lead at the lower end of the grounding lead-out fusing wire 57 is connected to a dedicated grounding wire in the line transmission system to lead out the current on the surface of the wire, avoiding the problem of flashover caused by partial discharge. At the same time, it can automatically disconnect during current overload to prevent overcurrent from causing permanent damage to the insulator, wire, and other electrical equipment, and then can automatically recover, enabling the porcelain insulator body 1 to have both overcurrent protection and electrical insulation functions. The fixing method of the upper mounting and positioning structure 3 for the wire is as follows: Open the metal cap 32 and clip the wire into the installation groove inside the wire mounting seat 312 inside the upper positioning seat 31. At this time, the metal contact pad 313 fits the surface of the wire, and then the metal cap 32 is sleeved outside the upper positioning seat 31 and fixed with small bolts. At this time, the lower wire mounting seat 321 wraps the upper half of the wire. The lower wire mounting seat 321 is respectively clamped into the upper wire mounting seat 312 and the metal contact pad 313 through the snap pad 3211 and the locking hoop 3212, so that the lower wire mounting seat 321 and the wind deflection movable groove 311 form a whole to complete the positioning installation of the wire. The sealing and locking ring 314 increases the insulation tightness on both sides of the wire. The wind deflection movable groove 311 not only plays a positioning role when the metal cap 32 is installed, but also limits the wind deflection of the wire. The lower wire mounting seat 321 and the wind deflection movable groove 311 form a wire positioning and installation block that can rotate at a certain angle inside the upper positioning seat 31 and the metal cap 32, and can generate a certain amount of offset buffer under the action of wind to resist the wind force. The sector-shaped movable plate 322 synchronously deflects inside the wind deflection buffer groove 323 when the wind deflection movable groove 311 and the upper wire mounting seat 312 deflect, squeezing the correction spring 324 to carry out a certain degree of buffering, so as to generate an offset buffer under the action of wind and effectively resist the direct influence of the wind on the wire. Then the correction spring 324 resets to make the sector-shaped movable plate 322 reset. At this time, the correction magnet one 3221 and the correction magnet two 325 are magnetically adsorbed to complete the overall reset and correction of the sector-shaped movable plate 322, so that after the wind deflection movable groove 311 and the upper wire mounting seat 312 fix the wire, they can automatically adjust and correct their positions after buffering along with the wind deflection of the wire, enabling the wire to automatically return to the original position after experiencing wind deflection, ensuring the stability and reliability of power transmission.;

[0035] Embodiment 2. Refer to Figures 1 to 14 , on the basis of Embodiment 1, in order to prevent the lower metal connector 4 from loosening easily after being fixed to the cross arm, this embodiment further proposes that the upper and lower ends of the porcelain insulator body 1 are respectively fixedly connected to the inner walls of one ends of the upper metal connector 2 and the lower metal connector 4. Connecting seals 53 are fixedly installed on the outer surfaces of the upper and lower ends of the fuse insulation protection sleeve 51. The fuse insulation protection sleeve 51 is fixedly installed inside the porcelain insulator body 1 through the connecting seals 53. A sand heat dissipation cavity 52 is provided between the fuse insulation protection sleeve 51 and the connecting seals 53. An insulation seal II 42 is provided inside the lower metal connector 4. A fuse wire insulation plugging block 421 is fixedly installed in the middle of the insulation seal II 42. The lower end of the grounding lead-out fuse wire 57 is fixedly connected to the upper part of the inner wall of the fuse wire insulation plugging block 421. A fixing bolt 41 is provided below the insulation seal II 42. A clamping hole adapted to the fixing bolt 41 is provided on the lower part of the inner wall of the fuse wire insulation plugging block 421. An insulation seal block 43 and a locking block 44 are fixedly installed on the outside of the fixing bolt 41. Installation grooves adapted to the insulation seal block 43 and the locking block 44 are provided inside the insulation seal II 42. A locking pin 441 is provided on the outside of the locking block 44. A locking groove adapted to the locking pin 441 is provided on the side wall of the insulation seal II 42; in this embodiment, the porcelain insulator body 1 is integrally fixed to the cross arm by tightening after sleeving a gasket on the fixing bolt 41, so as to support and isolate between the wires and prevent current leakage to ensure the safe and stable operation of the power system. The insulation seal II 42, the fuse wire insulation plugging block 421 and the insulation seal block 43 all play a role of insulation isolation to prevent high voltage from directly conducting to the grounded metal components. After the fixing bolt 41 is installed in place, the locking pin 441 will pop out naturally and snap into the locking groove inside the fuse wire insulation plugging block 421 to lock the fixing bolt 41 and prevent the fixing bolt 41 from loosening due to the action of wind force later, making the installation and fixation of the porcelain insulator body 1 to the wire more stable. The connecting seal 53 mainly plays a role of increasing the insulation and sealing protection at the joints of the fuse insulation protection sleeve 51, the porcelain insulator body 1, the upper metal connector 2 and the lower metal connector 4. Fine sand can be filled in the sand heat dissipation cavity 52, which not only increases the electrical insulation effect of the porcelain insulator body 1, but also plays a certain role in pressure relief and buffer protection for the fuse insulation protection sleeve 51.

[0036] Embodiment 3. Refer to Figures 1 to 14, on the basis of the second embodiment, in order to avoid partial discharge at the connection between the porcelain insulator and the wire in a strong wind and lightning environment, this embodiment further proposes that insulating core layers 55 are symmetrically arranged on the upper and lower sides inside the fusing insulation protection sleeve 51, a fusing tube 56 is arranged between the two groups of insulating core layers 55, three groups of fusing tubes 56 are provided, chucks 561 are fixedly installed between the three groups of fusing tubes 56, pressure relief holes 562 are symmetrically formed in the side walls of the three groups of fusing tubes 56, a buffer corrugated ring 54 is arranged on the side wall of the fusing insulation protection sleeve 51, and the position of the buffer corrugated ring 54 corresponds to the position of the pressure relief hole 562 one by one. A self-healing cavity 564 is arranged in the middle of the fusing tube 56, self-healing extrusion molds 5641 are symmetrically arranged on both sides of the self-healing cavity 564, and an elastic pushing pad 5642 is fixedly installed between the outer surface of the self-healing extrusion mold 5641 and the inner surface of the self-healing cavity 564. A fusing opening 571 is formed in the middle of the grounding lead-out fusing wire 57, and the position of the fusing opening 571 corresponds to the position of the self-healing extrusion mold 5641 one by one. Inner density gaskets 563 are symmetrically and fixedly installed on the upper and lower sides inside the fusing tube 56, a reset spring 5632 is fixedly installed on the inner surface of the inner density gasket 563, a pressure relief ring 5631 is fixedly installed at one end of the reset spring 5632, and chutes adapted to the pressure relief ring 5631 are arranged at the upper and lower ends of the self-healing cavity 564;In this embodiment, the grounding lead fuse wire 57 cooperates with the metal contact pad 313 to lead out the current generated on the surface of the wire and connect it to a dedicated grounding wire in the line transmission system, leading out the current on the surface of the wire to avoid the problem of flashover caused by partial discharge of the wire. The insulating core layer 55 mainly plays a role in insulating and protecting the grounding lead fuse wire 57. Three fuse tubes 56 are respectively arranged outside three fuse openings 571. If one fails, the others can still function, increasing the current protection effect of the grounding lead fuse wire 57. When the grounding lead fuse wire 57 passes through an overload current, the fuse opening 571 will melt, causing the grounding lead fuse wire 57 to automatically disconnect, preventing the instantaneous overload current from causing permanent damage to insulators, wires, and other electrical equipment. When the fuse opening 571 melts due to overload, the pressure inside the self-healing cavity 564 suddenly increases due to high temperature. At this time, a part of the reset spring 5632 is pushed out under the action of the pressure. At this time, the pressure and heat can be relieved through the ejection groove and pressure relief hole 562 of the reset spring 5632. The pressure and heat are directly released into the fuse insulation protection sleeve 51. The position of the pressure relief hole 562 corresponds to the position of the buffer corrugated ring 54. The corrugated design of the buffer corrugated ring 54 can buffer the pressure and avoid the problem of explosion. After the reset spring 5632 is pushed out, the self-healing extrusion die 5641 is pushed and extruded by the elastic push pad 5642 to re-extrude and shape the fuse opening 571 so that the fuse opening 571 heals again. After the pressure and heat are released, the pressure relief ring 5631 pushes the reset spring 5632 to reset again. At this time, the self-healing extrusion die 5641 is pushed back and reset by the reset spring 5632. After the fuse opening of the fuse opening 571 melts and cools down, the grounding lead fuse wire 57 regains its current protection function, improving the safety and reliability of the power system.

[0037] Embodiment 4, please refer to Figures 1 to 14, on the basis of Embodiment III, this embodiment further proposes an installation method for an electric porcelain insulator with a self - contained installation positioning structure, including the following steps: Step 1, after sleeving a gasket outside the fixing bolt 41 and tightening it, the porcelain insulator body 1 is integrally fixed to the cross - arm. After the fixing bolt 41 is installed in place, the locking pin 441 of the locking block 44 will pop out naturally and be inserted into the locking groove inside the fuse - wire insulation plugging block 421, so that the fixing bolt 41 is locked. Then, connect the lead wire at the lower end of the grounding lead - out fuse - wire 57 to a dedicated grounding wire; Step 2, open the metal cap 32 and clip the wire into the installation groove inside the wire installation seat 312 inside the upper positioning seat 31. At this time, the metal contact pad 313 fits the surface of the wire, and then sleeve the metal cap 32 outside the upper positioning seat 31 and fix it with small bolts; Step 3, under the action of wind, the wire lower installation seat 321 and the wind - deflection movable groove 311 form a wire positioning and installation block that can rotate at a certain angle inside the upper positioning seat 31 and the metal cap 32 to resist the wind force and generate offset buffering. Then, the correction magnet one 3221 and the correction magnet two 325 are magnetically adsorbed to complete the overall reset and correction of the fan - shaped movable plate 322, so that after the wind - deflection movable groove 311 and the wire installation seat 312 fix the wire, they can automatically adjust, buffer, and return to the correct position along with the wind deflection of the wire; Step 4, the grounding lead - out fuse - wire 57 cooperates with the metal contact pad 313 to lead out the current generated on the surface of the wire and connect it to a dedicated grounding wire in the line transmission system, leading out the current on the surface of the wire to avoid partial discharge. When the grounding lead - out fuse - wire 57 passes through an overload current, the fuse - breaking port 571 will fuse, so that the grounding lead - out fuse - wire 57 can automatically disconnect, preventing permanent damage to the insulator, wire, and other electrical equipment caused by instantaneous overload current.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric porcelain insulator with a self - contained installation and positioning structure, comprising a porcelain insulator body (1), characterized in that: An upper metal connector (2) is fixedly installed at the upper end of the porcelain insulator body (1). A lower metal connector (4) is fixedly installed at the lower end of the porcelain insulator body (1). An upper installation and positioning structure (3) is arranged above the upper metal connector (2). The upper installation and positioning structure (3) includes an upper positioning seat (31) and a metal cap (32). A current protection fusing structure (5) is arranged inside the porcelain insulator body (1). The current protection fusing structure (5) includes a fusing insulation protection sleeve (51), a fusing tube (56), and a grounding lead-out fusing wire (57). The metal cap (32) is sleeved outside the upper positioning seat (31). A wire lower installation seat (321) is rotatably installed inside the metal cap (32). A sector-shaped movable plate (322) is fixedly installed on the upper surface of the wire lower installation seat (321). A wind deflection buffer groove (323) adapted to the sector-shaped movable plate (322) is arranged inside the metal cap (32). Correcting springs (324) are symmetrically and fixedly installed on both sides inside the wind deflection buffer groove (323). One end of each correcting spring (324) is fixedly connected to the side wall of the sector-shaped movable plate (322). A first correcting magnetic block (3221) is fixedly installed on the upper surface of the sector-shaped movable plate (322). A second correcting magnetic block (325) adapted to the first correcting magnetic block (3221) is fixedly installed above the metal cap (32).

2. The electro-ceramic insulator with a self-mounted positioning structure according to claim 1, wherein: The lower end of the upper positioning seat (31) is fixedly connected to the upper end of the upper metal connector (2). Wind deflection movable grooves (311) are symmetrically formed in the side wall of the upper positioning seat (31). A wire upper installation seat (312) is rotatably installed on the upper surface of the upper positioning seat (31). A metal contact pad (313) is fixedly installed inside the wire upper installation seat (312). The lower surface of the metal contact pad (313) is fixedly connected to the upper end of the grounding lead-out fusing wire (57). Sealing and locking rings (314) are arranged on both sides of the metal contact pad (313). An insulating seal (21) adapted to the grounding lead-out fusing wire (57) is fixedly installed inside the upper metal connector (2).

3. The electroceramic insulator with a self - contained installation positioning structure according to claim 2, characterized in that: A fastening pad (3211) is fixedly installed on the lower surface of the metal cap (32). A clamping groove adapted to the metal contact pad (313) is arranged on the lower surface of the fastening pad (3211). Locking hoops (3212) are fixedly installed at both ends of the fastening pad (3211). Locking holes adapted to the locking hoops (3212) are arranged inside the sealing and locking rings (314).

4. A porcelain insulator with a self - contained installation positioning structure according to claim 1, characterized in that: The upper and lower ends of the porcelain insulator body (1) are respectively fixedly connected to the inner walls of one ends of the upper metal connector (2) and the lower metal connector (4). Connecting seals (53) are fixedly installed on the outer surfaces of the upper and lower ends of the fusing insulation protection sleeve (51). The fusing insulation protection sleeve (51) is fixedly installed inside the porcelain insulator body (1) through the connecting seals (53). A sand heat dissipation cavity (52) is arranged between the fusing insulation protection sleeve (51) and the connecting seals (53).

5. The electro-ceramic insulator with a self - contained installation positioning structure according to claim 1, characterized in that: An insulating seal two (42) is arranged inside the lower metal connecting piece (4). A fuse wire insulating plugging block (421) is fixedly installed in the middle of the insulating seal two (42). The lower end of the grounding lead-out fuse wire (57) is fixedly connected to the upper part of the inner wall of the fuse wire insulating plugging block (421). A fixing bolt (41) is arranged below the insulating seal two (42). A clamping hole adapted to the fixing bolt (41) is arranged on the lower part of the inner wall of the fuse wire insulating plugging block (421).

6. The electro-ceramic insulator with a self-mounted positioning structure according to claim 5, characterized in that: An insulating seal block (43) and a locking block (44) are fixedly installed on the outside of the fixing bolt (41). An installation groove adapted to the insulating seal block (43) and the locking block (44) is arranged inside the insulating seal two (42). A locking pin (441) is arranged on the outer side of the locking block (44). A locking groove adapted to the locking pin (441) is arranged on the side wall of the insulating seal two (42).

7. The electro-ceramic insulator with a self-mounted positioning structure according to claim 4, characterized in that: Insulating core layers (55) are symmetrically arranged on the upper and lower sides inside the fuse insulating protective sleeve (51). A fuse tube (56) is arranged between the two groups of insulating core layers (55). There are three groups of fuse tubes (56). Clamps (561) are fixedly installed between the three groups of fuse tubes (56). Pressure relief holes (562) are symmetrically formed in the side walls of the three groups of fuse tubes (56). A buffer corrugated ring (54) is arranged on the side wall of the fuse insulating protective sleeve (51). The position of the buffer corrugated ring (54) corresponds to the position of the pressure relief hole (562) one by one.

8. The electro-ceramic insulator with a self-mounted positioning structure according to claim 7, characterized in that: A self-healing cavity (564) is arranged in the middle of the fuse tube (56). Self-healing extrusion dies (5641) are symmetrically arranged on both sides of the self-healing cavity (564). An elastic pushing pad (5642) is fixedly installed between the outer surface of the self-healing extrusion die (5641) and the inner surface of the self-healing cavity (564). A fuse opening (571) is formed in the middle of the grounding lead-out fuse wire (57). The position of the fuse opening (571) corresponds to the position of the self-healing extrusion die (5641) one by one.

9. The electro-ceramic insulator with a self-mounted positioning structure according to claim 8, characterized in that: Inner density gaskets (563) are symmetrically and fixedly installed on the upper and lower sides inside the fuse tube (56). A reset spring (5632) is fixedly installed on the inner surface of the inner density gasket (563). One end of the reset spring (5632) is fixedly installed with a pressure relief ring (5631). Chutes adapted to the pressure relief ring (5631) are arranged at the upper and lower ends of the self-healing cavity (564).

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