Electric porcelain insulator with installation positioning structure

Abstract

The invention relates to the technical field of porcelain insulators, in particular to an electric porcelain insulator with a mounting and positioning structure, which comprises a porcelain insulator body, and an upper metal connecting piece is fixedly mounted at the upper end of the porcelain insulator body. The upper positioning seat and the metal cap are matched, so that the upper mounting and positioning structure can be automatically adjusted, corrected and reset after buffering along with the windage yaw of the wire after fixing the wire, and the lower metal connecting piece is mainly used for conveniently mounting the porcelain insulator body on a cross arm; the fixing bolt and the cross arm are locked after being fixedly installed through the arrangement of the insulation sealing block fixed to the fixing bolt, the fixing bolt is prevented from loosening, and a grounding lead-out fuse line and a fuse tube are arranged in the current protection fuse structure; a lead at the lower end of the grounding lead-out fuse wire is connected with a special grounding wire in a line transmission system, current on the surface of the lead is led out, and the problem of flashover caused by partial discharge is avoided.

Description

Technical Field

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

[0002] Electric porcelain insulators are porcelain insulators used in power transmission systems. They are widely used as key components in power transmission systems. They are mainly used to support and insulate wires to prevent current from leaking to the ground or other conductors. Porcelain insulators are generally composed 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 accessories include the top of the metal cap at the upper and lower ends and the bottom of the metal base, which are used to connect the wires and the supporting structure and the seal. The seal is located between the metal accessories 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 the metal fitting through the metal cap, and the lower end of the porcelain insulator is fixed to the pole tower or cross arm through the metal base, which plays a supporting role and provides the necessary electrical isolation. In the prior art, because porcelain insulators are generally installed and fixed in different ways at high altitudes by screws, it is inconvenient, and the tightening operation is cumbersome, and it is not convenient for later disassembly and replacement.

[0003] The existing Chinese patent document with publication number CN117275848A proposes an electric porcelain insulator with a self-installation and positioning structure, which is provided with an electric porcelain insulator body, a cross arm, a mounting block, a square sleeve groove, a first ring groove, a positioning ring 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 unidirectional adjustment fixing piece, so that the electric porcelain insulator has a self-installation and positioning structure, which is convenient for the installation and fixation of the electric porcelain insulator to solve the above-mentioned problems. However, the gear and rack are meshed for installation and positioning. Under the action of strong outdoor wind, the gear and rack will experience continuous vibration, which may cause rapid wear of the contact surface and reduce its strength and durability. In addition, the toothed structure of the gear and rack is prone to form a tip effect, which increases the local electric field strength, thereby inducing corona discharge, increasing the possibility of uneven surface resistivity, and increasing the risk of local discharge or flashover.

[0004] Therefore, the present invention proposes an electric porcelain insulator with a self-installation positioning structure to solve the problems in the prior art that the metal mounting parts of the porcelain insulator are easily worn and prone to local discharge in a strong wind environment. The installation positioning structure is designed at both ends of the porcelain insulator and a self-healing fuse structure is designed inside the porcelain insulator, so that the porcelain insulator has both overcurrent protection and electrical insulation functions while being easy to install. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide an electric porcelain insulator with a self-installing and positioning structure to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric porcelain insulator with a self-installing positioning structure, comprising a porcelain insulator body, an upper metal connector fixedly mounted on the upper end of the porcelain insulator body, a lower metal connector fixedly mounted on the lower end of the porcelain insulator body, an upper installation positioning structure is arranged above the upper metal connector, the upper installation positioning structure comprises an upper positioning seat and a metal cap, a current protection fuse structure is arranged inside the porcelain insulator body, and the current protection fuse structure comprises a fuse insulation protection sleeve, a fuse tube and a grounding lead fuse wire.

[0007] Preferably, the lower end of the upper positioning seat is fixedly connected to the upper end of the upper metal connecting piece, the side walls of the upper positioning seat are symmetrically provided with wind deflection movable grooves, the upper surface of the upper positioning seat is rotatably mounted with a wire upper mounting seat, a metal contact pad is fixedly mounted inside the wire upper mounting seat, the lower surface of the metal contact pad is fixedly connected to the upper end of the grounding lead-out fusible wire, sealing locking rings are provided on both sides of the metal contact pad, and an insulating seal matching the grounding lead-out fusible wire is fixedly mounted inside the upper metal connecting piece.

[0008] Preferably, the metal cap is sleeved on the outside of the upper positioning seat, the inside of the metal cap is rotatably installed with a lower wire mounting seat, the lower surface of the metal cap is fixedly installed with a snap-fit ​​pad, the lower surface of the snap-fit ​​pad is provided with a slot adapted to the metal contact pad, locking hoops are fixedly installed at both ends of the snap-fit ​​pad, and the inside of the sealing locking ring is provided with a locking hole adapted to the locking hoop.

[0009] Preferably, a fan-shaped movable plate is fixedly installed on the upper surface of the conductor lower mounting seat, a wind deflection buffer groove adapted to the fan-shaped movable plate is arranged inside the metal cap, correction springs are symmetrically fixedly installed on both sides of the wind deflection buffer groove, one end of the correction spring is fixedly connected to the side wall of the fan-shaped movable plate, a correction magnetic block 1 is fixedly installed on the upper surface of the fan-shaped movable plate, and a correction magnetic block 2 adapted to the correction magnetic block 1 is fixedly installed above the metal cap.

[0010] Preferably, the upper and lower ends of the porcelain insulator body are fixedly connected to the inner walls of one end of the upper metal connector and the lower metal connector respectively, and the upper and lower end outer surfaces of the fusible insulating protection sleeve are fixedly installed with connecting seals. The fusible insulating protection sleeve is fixedly installed inside the porcelain insulator body through the connecting seal, and a sand heat dissipation cavity is arranged between the fusible insulating protection sleeve and the connecting seal.

[0011] Preferably, an insulating seal 2 is provided inside the lower metal connector, a fusible wire insulating sealing block is fixedly installed in the middle of the insulating seal 2, the lower end of the grounding lead-out fusible wire is fixedly connected to the upper inner wall of the fusible wire insulating sealing block, a fixing bolt is provided below the insulating seal 2, and a snap-in hole compatible with the fixing bolt is provided below the inner wall of the fusible wire insulating sealing block.

[0012] Preferably, an insulating sealing block and a locking block are fixedly installed on the outside of the fixing bolt, an installation groove compatible with the insulating sealing block and the locking block is provided inside the insulating sealing component 2, a locking pin is provided on the outside of the locking block, and a locking groove compatible with the locking pin is provided on the side wall of the insulating sealing component 2.

[0013] Preferably, insulating core layers are symmetrically arranged on the upper and lower sides of the interior of the fusible insulating protection sleeve, a fuse tube is arranged between two groups of the insulating core layers, three groups of the fuse tubes are arranged, and clamps are fixedly installed between the three groups of the fuse tubes. The side walls of the three groups of the fuse tubes are symmetrically provided with pressure relief holes, and the side walls of the fusible insulating protection sleeve are provided with buffer pleated rings, and the positions of the buffer pleated rings correspond one-to-one to the positions of the pressure relief holes.

[0014] Preferably, a self-healing cavity is provided in the middle of the interior of the fuse tube, self-healing extrusion dies are symmetrically provided on both sides of the self-healing cavity, an elastic push 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 provided in the middle of the grounding lead-out fuse wire, and the position of the fuse opening corresponds one-to-one to the position of the self-healing extrusion die.

[0015] Preferably, internal density gaskets are symmetrically fixedly installed on the upper and lower sides of the fuse tube, a reset spring is fixedly installed on the inner surface of the internal density gasket, a pressure relief ring is fixedly installed on one end of the reset spring, and the upper and lower ends of the self-healing cavity are provided with sliding grooves adapted to the pressure relief ring.

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

[0017] The upper mounting positioning structure is designed to fix the conductor. The upper positioning seat and the metal cap cooperate so that after the upper mounting positioning structure fixes the conductor, it can automatically adjust and correct to its original position after buffering the wind deflection of the conductor. The lower metal connector mainly facilitates the installation of the porcelain insulator body on the crossarm, and the insulating sealing block fixed on the fixing bolt is set to lock the fixing bolt and the crossarm after fixed installation to prevent the fixing bolt from loosening. The current protection fuse structure is internally provided with a grounding lead-out fusible wire and a fuse tube. The lead at the lower end of the grounding lead-out fusible wire is connected to a special grounding wire in the line transmission system to lead out the current on the surface of the conductor to avoid flashover caused by local discharge. At the same time, it can automatically disconnect when the current is overloaded to prevent the overcurrent from causing permanent damage to the insulator, conductor and other electrical equipment, and then it can automatically recover, so that the porcelain insulator body has both overcurrent protection and electrical insulation functions. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0023] Figure 6 It is a schematic diagram of the split structure of the upper mounting and positioning structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the split upward view of the upper mounting positioning structure of the present invention;

[0025] Figure 8 This is a schematic diagram of a split top view of the upper mounting and positioning structure of the present invention;

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

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

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

[0029] Fig.12 It is a schematic diagram of the cross-sectional structure of the fuse insulating protective sleeve of the present invention;

[0030] Fig.13 It is a schematic diagram of the internal structure of the fusible insulating protective sleeve of the present invention;

[0031] Fig.14 It is a 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 connector; 21, insulating seal 1; 3, upper mounting positioning structure; 31, upper positioning seat; 311, wind deflection movable groove; 312, conductor upper mounting seat; 313, metal contact pad; 314, sealing locking ring; 32, metal cap; 321, conductor lower mounting seat; 3211, buckle pad; 3212, locking hoop; 322, fan-shaped movable plate; 3221, correction magnetic block 1; 323, wind deflection buffer groove; 324, correction spring; 325, correction magnetic block 2; 4, lower metal connector; 41, fixing bolt; 42, insulating seal Seal 2; 421, fusible wire insulation blocking block; 43, insulating sealing block; 44, locking block; 441, locking pin; 5, current protection fuse structure; 51, fusible wire insulation protection sleeve; 52, sand heat dissipation cavity; 53, connecting seal; 54, buffer pleated ring; 55, insulating core layer; 56, fusible tube; 561, chuck; 562, pressure relief hole; 563, internal density gasket; 5631, pressure relief ring; 5632, reset spring; 564, self-healing cavity; 5641, self-healing extrusion die; 5642, elastic push pad; 57, grounding lead fusible wire; 571, fuse port. DETAILED DESCRIPTION

[0033] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] For example, see Figures 1 to 14The present invention provides a technical solution: an electric porcelain insulator with a self-installation positioning structure, comprising a porcelain insulator body 1, an upper metal connector 2 is fixedly installed on the upper end of the porcelain insulator body 1, a lower metal connector 4 is fixedly installed on the lower end of the porcelain insulator body 1, an upper installation positioning structure 3 is arranged above the upper metal connector 2, the upper installation positioning structure 3 includes an upper positioning seat 31 and a metal cap 32, a current protection fuse structure 5 is arranged inside the porcelain insulator body 1, and the current protection fuse structure 5 includes a fuse insulation protection sleeve 51, a fuse The lower end of the upper positioning seat 31 is fixedly connected to the upper end of the upper metal connector 2, and the side wall of the upper positioning seat 31 is symmetrically provided with wind deflection movable grooves 311. The upper surface of the upper positioning seat 31 is rotatably mounted with a wire upper mounting seat 312, and a metal contact pad 313 is fixedly mounted inside the wire upper mounting seat 312. The lower surface of the metal contact pad 313 is fixedly connected to the upper end of the grounding lead-out fuse 57, and both sides of the metal contact pad 313 are provided with sealing locking rings 314. The inner fixed portion of the upper metal connector 2 An insulating seal 21 adapted to the grounding lead-out fuse 57 is fixedly installed, a metal cap 32 is sleeved on the outside of the upper positioning seat 31, a wire lower mounting seat 321 is rotatably installed inside the metal cap 32, a buckle 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 provided on the lower surface of the buckle pad 3211, locking hoops 3212 are fixedly installed at both ends of the buckle pad 3211, and a locking hole adapted to the locking hoop 3212 is provided inside the sealing locking ring 314, and the wire A fan-shaped movable plate 322 is fixedly installed on the upper surface of the lower mounting seat 321, a windage buffer groove 323 adapted to the fan-shaped movable plate 322 is arranged inside the metal cap 32, and correction springs 324 are symmetrically fixedly installed on both sides of the windage buffer groove 323, one end of the correction spring 324 is fixedly connected to the side wall of the fan-shaped movable plate 322, a correction magnetic block 1 3221 is fixedly installed on the upper surface of the fan-shaped movable plate 322, and a correction magnetic block 2 325 adapted to the correction magnetic block 1 3221 is fixedly installed above the metal cap 32;In this embodiment, the upper metal connector 2 mainly serves to fix the upper mounting positioning structure 3 with the porcelain insulator body 1. The upper mounting positioning structure 3 is used to fix the wire, and the upper positioning seat 31 and the metal cap 32 cooperate to make the upper mounting positioning structure 3 fix the wire and automatically adjust and correct it after buffering the wind deflection of the wire. The lower metal connector 4 mainly serves to facilitate the installation of the porcelain insulator body 1 on the cross arm, and the insulating sealing block 43 fixed on the fixing bolt 41 is set to lock the fixing bolt 41 with the cross arm after the fixing installation to prevent the fixing bolt 41 from loosening. The current protection fuse structure 5 is provided with a grounding lead-out fuse 57 and a fuse tube 56. The lead at the lower end of the grounding lead-out fuse 57 By connecting with the special grounding wire in the line transmission system, the current on the surface of the conductor is led out to avoid the problem of flashover caused by local discharge. At the same time, it can automatically disconnect when the current is overloaded to prevent the overcurrent from causing permanent damage to the insulator, conductor and other electrical equipment, and then it can automatically recover, so that the porcelain insulator body 1 has both overcurrent protection and electrical insulation functions. The upper mounting positioning structure 3 is fixed to the conductor in the following way: open the metal cap 32 and clip the conductor into the internal mounting groove of the conductor upper mounting seat 312 inside the upper positioning seat 31. At this time, the metal contact pad 313 fits the surface of the conductor, and then the metal cap 32 is sleeved on the outside of the upper positioning seat 31 and fixed with small bolts. At this time, the upper half of the conductor is fixed to the lower mounting seat 321 of the conductor. The lower conductor mounting seat 321 is respectively wrapped in the upper conductor mounting seat 312 and the metal contact pad 313 through the buckling pad 3211 and the locking hoop 3212, so that the lower conductor mounting seat 321 and the wind deflection movable groove 311 form a whole to complete the positioning and installation of the conductor. The sealing locking ring 314 increases the insulation sealing of both sides of the conductor. 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 conductor. The lower conductor mounting seat 321 and the wind deflection movable groove 311 constitute a conductor positioning and mounting block, which can be rotated at a certain angle inside the upper positioning seat 31 and the metal cap 32, and can produce a certain offset buffer to resist the wind force under the action of wind. The fan-shaped movable plate 322 is in the wind When the deflection movable slot 311 and the mounting seat 312 on the conductor deflect, the wind deflection buffer slot 323 deflects synchronously, squeezing the correction spring 324 and providing a certain degree of buffering, thereby generating an offset buffer under the action of wind force, effectively resisting the direct impact of wind force on the conductor, and then the correction spring 324 is reset to reset the fan-shaped movable plate 322. At this time, the correction magnetic block 1 3221 and the correction magnetic block 2 325 use magnetic adsorption to complete the overall reset and correction of the fan-shaped movable plate 322, so that the wind deflection movable slot 311 and the mounting seat 312 on the conductor can automatically adjust and correct the return position after the conductor wind deflection is buffered, so that the conductor can automatically return to its original position after experiencing wind deflection, ensuring the stability and reliability of power transmission. ;

[0035] For example 2, please refer to Figures 1 to 14 On the basis of the first embodiment, in order to prevent the lower metal connector 4 from loosening after being fixed to the cross arm, the present embodiment further proposes that the upper and lower ends of the porcelain insulator body 1 are respectively fixedly connected to the inner wall of the upper metal connector 2 and one end of the lower metal connector 4, and the upper and lower ends of the fuse insulating protective sleeve 51 are fixedly installed with connecting seals 53 on the outer surfaces, and the fuse insulating protective sleeve 51 is fixedly installed inside the porcelain insulator body 1 through the connecting seals 53, and a sand heat dissipation cavity 52 is provided between the fuse insulating protective sleeve 51 and the connecting seals 53, and the lower metal connector 4 is provided with an insulating seal 242 inside. A fusible wire insulating blocking block 421 is fixedly installed in the middle of the insulating seal 42, and the lower end of the grounding lead-out fusible wire 57 is fixedly connected to the upper inner wall of the fusible wire insulating blocking block 421. A fixing bolt 41 is arranged below the insulating seal 42, and a snap-fitting hole matched with the fixing bolt 41 is arranged below the inner wall of the fusible wire insulating blocking block 421. An insulating sealing block 43 and a locking block 44 are fixedly installed outside the fixing bolt 41. An installation groove matched with the insulating sealing block 43 and the locking block 44 is arranged inside the insulating seal 42, and a locking pin is arranged outside the locking block 44. 441, the side wall of the insulating seal 42 is provided with a locking groove adapted to the locking pin 441; in this embodiment, the porcelain insulator body 1 is fixed to the cross arm as a whole by sleeve-mounting a gasket on the outside of the fixing bolt 41 and then tightening it, so as to support and isolate the wires to prevent current leakage, so as to ensure the safe and stable operation of the power system. The insulating seal 42 and the insulating blocking block 421 of the fusible wire and the insulating sealing block 43 all play the role of insulating isolation, so as to prevent high voltage from being directly conducted to the grounded metal parts. After the fixing bolt 41 is installed in place, the locking pin 441 will automatically The fixing bolt 41 is locked to prevent the fixing bolt 41 from loosening due to wind force, so that the porcelain insulator body 1 can be more stably installed and fixed to the wire. The connecting seal 53 mainly serves to increase the insulation sealing protection of the connection between the fusible insulating protective sleeve 51 and the porcelain insulator body 1, the upper metal connector 2, and the lower metal connector 4. The sand heat dissipation cavity 52 can be filled with fine sand, which not only increases the electrical insulation effect of the porcelain insulator body 1, but also provides a certain pressure relief buffer protection for the fusible insulating protective sleeve 51.

[0036] For example 3, please refer to Figures 1 to 14On the basis of the second embodiment, in order to avoid partial discharge at the connection between the porcelain insulator and the conductor under a strong wind and lightning environment, the present embodiment further proposes that insulating core layers 55 are symmetrically arranged on the upper and lower sides of the interior of the fuse insulating protection sleeve 51, a fuse tube 56 is arranged between the two groups of insulating core layers 55, three groups of fuse tubes 56 are arranged, and a clamp 561 is fixedly installed between the three groups of fuse tubes 56. The side walls of the three groups of fuse tubes 56 are symmetrically provided with pressure relief holes 562, and the side walls of the fuse insulating protection sleeve 51 are provided with a buffer corrugated ring 54, and the position of the buffer corrugated ring 54 corresponds to the position of the pressure relief hole 562. A self-healing cavity 564 is arranged in the middle of the interior of the fuse tube 56, and the self-healing cavity 564 A self-healing extrusion die 5641 is symmetrically arranged on both sides of the self-healing extrusion die 5641, an elastic push 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 opened in the middle of the grounding lead-out fuse line 57, and the position of the fuse opening 571 corresponds to the position of the self-healing extrusion die 5641. Internal density gaskets 563 are symmetrically fixedly installed on the upper and lower sides of the fuse tube 56, and a reset spring 5632 is fixedly installed on the inner surface of the internal density gasket 563. A pressure relief ring 5631 is fixedly installed on one end of the reset spring 5632, and a slide groove adapted to the pressure relief ring 5631 is arranged at the upper and lower ends of the self-healing cavity 564;In the present embodiment, the grounding lead-out fusible link 57 cooperates with the metal contact pad 313 to lead out the current generated on the surface of the conductor and connect it to the special grounding wire in the line transmission system, so as to lead out the current on the surface of the conductor to avoid the problem of flashover caused by local discharge of the conductor. The insulating core layer 55 mainly plays the role of insulating and protecting the grounding lead-out fusible link 57. The fuse tube 56 is provided with three groups, which are respectively arranged outside the three fuse openings 571. If one of them fails, the others can still play a role, thereby increasing the current protection effect of the grounding lead-out fusible link 57. When the grounding lead-out fusible link 57 passes through an overload current, the fuse opening 571 will fuse, so that the grounding lead-out fusible link 57 can be automatically disconnected to prevent the instantaneous overload current from causing permanent damage to the insulator, conductor and other electrical equipment. When the fuse opening 571 fuses due to overload, the pressure inside the self-healing cavity 564 increases suddenly due to the high temperature. At this time, the reset spring 5632 is under pressure. Under the action, a part of it is pushed out. At this time, the pressure and heat can be released through the ejection groove and the 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 pleated ring 54. The pleated design of the buffer pleated ring 54 can buffer the pressure to avoid the problem of burst. After the reset spring 5632 is pushed out, the self-healing extrusion die 5641 re-extrudes and shapes the fuse port 571 under the extrusion and push of the elastic push pad 5642 to make the fuse port 571 heal 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. The fuse port 571 is fused and then cooled down to recover, so that the grounding lead-out fusible wire 57 has the function of current protection again, thereby improving the safety and reliability of the power system. ;

[0037] Example 4, please refer to Figures 1 to 14On the basis of the third embodiment, the present embodiment further proposes a method for installing an electric porcelain insulator with a self-installing positioning structure, comprising the following steps: Step 1, after a gasket is sleeved on the outside of the fixing bolt 41, it is tightened to fix the porcelain insulator body 1 as a whole to the cross arm, and after the locking block 44 is installed in place on the fixing bolt 41, the locking pin 441 will naturally pop out and be inserted into the locking groove on the inner side of the fusible wire insulation blocking block 421, so that the fixing bolt 41 is locked, and then the lead at the lower end of the grounding lead-out fusible wire 57 is connected to the special grounding wire; Step 2, open the metal cap 32 and insert the wire into the internal mounting groove of the wire upper 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 on the outside of the upper positioning seat 31 and fixed with a small bolt; Step 3, under the action of wind force, the lower mounting seat 321 of the wire and the wind deflection movable groove 31 The conductor positioning and mounting block 1 can be rotated at a certain angle inside the upper positioning seat 31 and the metal cap 32 to resist the effect of wind force and produce offset buffering. Then, the correction magnetic block 1 3221 and the correction magnetic block 2 325 use magnetic adsorption to complete the overall reset correction of the fan-shaped movable plate 322, so that the wind deviation movable groove 311 and the conductor upper mounting seat 312 can automatically adjust and correct the return position after the conductor is fixed with the wind deviation buffering; Step 4, the grounding lead-out fusible wire 57 cooperates with the metal contact pad 313 to lead out the current generated on the surface of the conductor and connect it to the special grounding wire in the line transmission system, and lead out the current on the surface of the conductor to avoid local discharge. When the grounding lead-out fusible wire 57 passes through the overload current, the fuse port 571 will fuse, so that the grounding lead-out fusible wire 57 can be automatically disconnected to prevent the instantaneous overload current from causing permanent damage to the insulator, conductor and other electrical equipment.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric porcelain insulator with a self-installing positioning structure, comprising a porcelain insulator body (1), characterized in that: An upper metal connector (2) is fixedly mounted on the upper end of the porcelain insulator body (1), a lower metal connector (4) is fixedly mounted on the lower end of the porcelain insulator body (1), an upper mounting positioning structure (3) is arranged above the upper metal connector (2), the upper mounting positioning structure (3) comprises an upper positioning seat (31) and a metal cap (32), a current protection fuse structure (5) is arranged inside the porcelain insulator body (1), and the current protection fuse structure (5) comprises a fuse insulation protection sleeve (51), a fuse tube (56) and a grounding lead fuse wire (57).

2. The insulator with a self-installation and positioning structure according to claim 1, characterized in that: The lower end of the upper positioning seat (31) is fixedly connected to the upper end of the upper metal connector (2); the side wall of the upper positioning seat (31) is symmetrically provided with wind deflection movable grooves (311); a wire upper mounting seat (312) is rotatably mounted on the upper surface of the upper positioning seat (31); a metal contact pad (313) is fixedly mounted inside the wire upper mounting seat (312); the lower surface of the metal contact pad (313) is fixedly connected to the upper end of the grounding lead-out fusible wire (57); sealing locking rings (314) are provided on both sides of the metal contact pad (313); and an insulating sealing member (21) adapted to the grounding lead-out fusible wire (57) is fixedly mounted inside the upper metal connector (2).

3. The electric porcelain insulator with a self-installation positioning structure according to claim 2 is characterized in that: The metal cap (32) is sleeved on the outside of the upper positioning seat (31), and a wire lower mounting seat (321) is rotatably mounted inside the metal cap (32). A buckling pad (3211) is fixedly mounted on the lower surface of the metal cap (32), and a slot matching the metal contact pad (313) is provided on the lower surface of the buckling pad (3211). Locking hoops (3212) are fixedly mounted on both ends of the buckling pad (3211), and a locking hole matching the locking hoop (3212) is provided inside the sealing locking ring (314).

4. The electric porcelain insulator with a self-installation positioning structure according to claim 3 is characterized in that: A fan-shaped movable plate (322) is fixedly mounted on the upper surface of the lower conductor mounting seat (321); a wind deflection buffer groove (323) matched with the fan-shaped movable plate (322) is arranged inside the metal cap (32); correction springs (324) are symmetrically fixedly mounted on both sides of the wind deflection buffer groove (323); one end of the correction spring (324) is fixedly connected to the side wall of the fan-shaped movable plate (322); a correction magnetic block 1 (3221) is fixedly mounted on the upper surface of the fan-shaped movable plate (322); and a correction magnetic block 2 (325) matched with the correction magnetic block 1 (3221) is fixedly mounted above the metal cap (32).

5. The electric porcelain insulator with a self-installation and positioning structure according to claim 1, characterized in that: The upper and lower ends of the porcelain insulator body (1) are fixedly connected to the inner walls of one end of the upper metal connector (2) and the lower metal connector (4), respectively; the upper and lower outer surfaces of the fusible insulating protective sleeve (51) are fixedly mounted with connecting seals (53); the fusible insulating protective sleeve (51) is fixedly mounted inside the porcelain insulator body (1) via the connecting seals (53); and a sand heat dissipation cavity (52) is provided between the fusible insulating protective sleeve (51) and the connecting seals (53).

6. The electric porcelain insulator with a self-installation and positioning structure according to claim 1, characterized in that: The lower metal connector (4) is provided with an insulating seal part 2 (42) inside, a fuse insulating sealing block (421) is fixedly installed in the middle of the insulating seal part 2 (42), the lower end of the grounding lead fuse (57) is fixedly connected to the upper part of the inner wall of the fuse insulating sealing block (421), a fixing bolt (41) is provided below the insulating seal part 2 (42), and a clamping hole matched with the fixing bolt (41) is provided below the inner wall of the fuse insulating sealing block (421).

7. The electric porcelain insulator with a self-installation and positioning structure according to claim 6, characterized in that: An insulating sealing block (43) and a locking block (44) are fixedly mounted on the outside of the fixing bolt (41); a mounting groove matching the insulating sealing block (43) and the locking block (44) is arranged inside the second insulating sealing member (42); a locking pin (441) is arranged on the outside of the locking block (44); and a locking groove matching the locking pin (441) is arranged on the side wall of the second insulating sealing member (42).

8. The electric porcelain insulator with a self-installation and positioning structure according to claim 5, characterized in that: Insulating core layers (55) are symmetrically arranged on the upper and lower sides of the interior of the fusible insulating protective sleeve (51); a fusible tube (56) is arranged between two groups of the fusible core layers (55); three groups of the fusible tubes (56) are arranged; a clamp (561) is fixedly installed between the three groups of the fusible tubes (56); the side walls of the three groups of the fusible tubes (56) are symmetrically provided with pressure relief holes (562); a buffer pleated ring (54) is arranged on the side wall of the fusible insulating protective sleeve (51); the position of the buffer pleated ring (54) corresponds one-to-one to the position of the pressure relief hole (562).

9. The electric porcelain insulator with a self-installation and positioning structure according to claim 8, characterized in that: A self-healing cavity (564) is arranged in the middle of the interior of the fuse tube (56), and self-healing extrusion dies (5641) are symmetrically arranged on both sides of the self-healing cavity (564), and an elastic push 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), and a fuse opening (571) is opened in the middle of the grounding lead fuse line (57), and the position of the fuse opening (571) corresponds one-to-one to the position of the self-healing extrusion die (5641).

10. The electric porcelain insulator with a self-installation and positioning structure according to claim 9, characterized in that: Internal density gaskets (563) are symmetrically fixedly installed on the upper and lower sides of the fuse tube (56), a reset spring (5632) is fixedly installed on the inner surface of the internal density gasket (563), a pressure relief ring (5631) is fixedly installed on one end of the reset spring (5632), and the upper and lower ends of the self-healing cavity (564) are provided with sliding grooves adapted to the pressure relief ring (5631).

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