A lightning protection porcelain insulator and a method of using the same

Abstract

This invention belongs to the field of insulator technology, specifically a lightning-protected porcelain insulator and its application method. Addressing the problem that current lightning-attracting devices can only guide lightning strikes in a single direction, leaving insulators and cables still at risk of lightning strikes, this invention proposes the following solution: An integral fixing plate is included. The circumferential edge of the fixing plate has a pre-reserved annular protrusion near the top, and a glass disc is fitted onto this protrusion. The glass disc has a downward-opening trumpet shape, and a lightning-attracting ring is fitted onto the circumferential edge of the glass disc away from the fixing plate. A flexible wire is inserted below the lightning-attracting ring on the glass disc. This invention provides lightning protection for silicone rubber cylindrical insulators from all directions. The glass disc also provides some rain and dust protection. During regular cleaning, only the upper surface of the glass disc closer to the power tower needs cleaning, reducing the difficulty and danger of the work.

Description

Technical Field

[0001] This invention relates to the field of insulator technology, and in particular to a lightning protection porcelain insulator and its application method. Background Technology

[0002] High-voltage transmission lines and equipment are located outdoors and exposed to the effects of lightning. Lightning strikes can damage equipment by flowing into the system through the air or through ground currents. Therefore, designing lightning protection measures is crucial to ensure the stability and long-term operation of the system.

[0003] A search revealed Chinese patent publication number CN204516512U, which discloses a lightning protection insulator with stable lightning protection effect, simple product structure, and convenient maintenance and replacement. The technical solution provided by this utility model is a lightning protection insulator, including an insulator body and a clamping hardware. The side end of the clamping hardware is connected to an arc-inducing rod, and the clamping hardware is also connected to the insulator body. Although the device is equipped with a dedicated arc-inducing rod and arc-inducing ball for attracting lightning, in reality, lightning strikes may come from various directions. Therefore, this single-direction lightning-attracting device is not reliable in actual operation. Summary of the Invention

[0004] To overcome the problem that current lightning-attracting devices can only guide lightning strikes in one direction, leaving insulators and cables still at risk of being struck by lightning, this invention provides a lightning-protected porcelain insulator and its usage method.

[0005] Firstly, a lightning protection porcelain insulator is provided, comprising an integral fixed plate. An annular protrusion is pre-formed on the circumferential edge of the fixed plate near its top, and a glass plate is fitted onto the annular protrusion. The glass plate has a downward-opening trumpet-shaped structure, and a lightning-attracting ring is fitted onto the circumferential edge of the glass plate away from the fixed plate. A flexible wire is inserted into the lightning-attracting ring below the glass plate. An L-shaped wire hole, communicating with the upper part of the fixed plate, is opened on the circumferential sidewall near the flexible wire. The flexible wire passes through the L-shaped wire hole and is electrically connected to a terminal block. In use, lightning is introduced into the ground through the grounding wire via the wiring terminal. The upper surface of the fixed plate has a hexagonal groove in the middle, and the bottom of the hexagonal groove has a strip-shaped perforation. The bottom of the hexagonal groove has a strip-shaped perforation that penetrates downward through the fixed plate. A bent hanging rod with a "V" shape is inserted into the strip-shaped perforation. A hanging ring is reserved at the top of the bent hanging rod, and a plug sleeve is wound and fixed at the bottom of the bent hanging rod. A single-headed anti-loosening bolt is inserted into the plug sleeve, and a silicone rubber cylindrical insulator is fixed to the plug sleeve by the single-headed anti-loosening bolt.

[0006] Furthermore, the inner circumference of the lightning-attracting ring has a pre-reserved annular protrusion on the lower surface of the glass disk, and the inner circumference of the lightning-attracting ring has a pre-reserved anti-detachment annular groove above the outer edge of the glass disk. A limiting ring is embedded in the anti-detachment annular groove to tightly fix the outer edge of the glass disk to the lightning-attracting ring. The outer circumference of the fixing disk has multiple annular holes near its top, symmetrically distributed and with a C-shaped cross-section. Another outlet of the annular hole is located at the top of the fixing disk. A spring baffle is fixed to the bottom outlet of the annular hole by screws, and a C-shaped arc-shaped pressure rod is rotatably connected within the annular hole. A compression spring is fixed between the bottom end of the arc-shaped pressure rod and the spring baffle. The top end of the arc-shaped pressure rod is pressed tightly against the upper surface of the glass disk by the pushing action of the compression spring. The overall C-shaped arc-shaped pressure rod not only maintains the simplicity of the top structure of the fixing disk, but also prevents exposed components from being corroded or rusted, thus improving the service life of the device.

[0007] Furthermore, the spring baffle has a rope hole in the middle with a diameter smaller than that of the compression spring, and a steel wire passes through the rope hole. One end of the steel wire is fixed to the bottom end of the arc-shaped pressure rod, and the other end of the steel wire is fixed to a pull ball. With the steel wire and pull ball, when the glass plate needs to be installed, all the pull balls need to be pulled at the same time, so that the top of the arc-shaped pressure rod retracts into the annular hole. Then, after the inner circumference of the glass plate presses against the annular protrusion on the outer circumference of the fixed plate, the pull balls can be released. Under the action of the compression spring, all the arc-shaped pressure rods can be pressed onto the glass plate.

[0008] Furthermore, the lower surface of the fixed plate has two centrally symmetrically distributed self-locking screw holes near its circumferential edge, and each self-locking screw hole is screwed with a hanging column. The bottom end of each hanging column has an anti-detachment locking groove, and the width of the anti-detachment locking groove is adapted to the diameter of the bent hanging rod. The bent hanging rod bends with the hanging ring as the center point, and both ends of the bent hanging rod pass downward through the strip-shaped through hole and then bend to both sides, passing through the corresponding anti-detachment locking groove. The outer circumferential wall of the hanging column has a threaded groove near its bottom end, and a screw plug is screwed to the outer circumferential wall of the hanging column near its bottom end. With this arrangement, not only can the fixed plate be tightly hung on the bent hanging rod, but the overall tensile strength of the bent hanging rod is also improved, and the overall load-bearing capacity is increased.

[0009] Furthermore, the glass plate has two drainage holes, which are located on the front and rear sides of the hanging ring, respectively. The drainage holes not only prevent rainwater from accumulating and causing continuous water flow, but also reduce the overall wind resistance of the glass plate and reduce the overall swaying when it is windy.

[0010] Furthermore, the upper surface of the fixing plate has an installation slot at the top outlet of the L-shaped wire hole, and the bottom end of the terminal block has a screw hole for fixing the flexible wire. Both ends of the flexible wire are welded with external threaded tubes for easy installation and wire threading.

[0011] Furthermore, the silicone rubber cylindrical insulator includes symmetrical and identical metal terminals and metal attachment ends. The metal attachment end includes an upward-opening V-shaped groove, with a cylindrical block pre-reserved at the bottom center of the V-shaped groove. A cylindrical insertion hole is formed on the lower surface of the cylindrical block, and the same insulating core rod is inserted between the two cylindrical insertion holes of the metal attachment end and the metal terminal. The outer circumference of the insulating core rod is wrapped with a silicone umbrella skirt, which includes multiple stacked discs. A smooth rod is pre-reserved near the top of the outer circumference of the silicone umbrella skirt, and a thrust ball bearing is fixed to the bottom end of the smooth rod. Furthermore, a support rod is fixed to the top of the thrust ball bearing, and a ball head is reserved at the top of the support rod. The top of the support rod is rotatably connected to an integrally inclined drip tray. The lower surface of the drip tray is reserved with a steering cap recess that forms a spherical rotational connection with the ball head. The area of ​​the drip tray is larger than the largest single tray diameter in the silicone umbrella skirt. A water inlet tip is reserved at the bottom of the drip tray, and a U-shaped groove is opened at the end of the drip tray away from the water inlet tip. Rectangular sliding grooves are opened on the inner walls of the opposite sides of the U-shaped groove. A plug is slidably inserted into the U-shaped groove, and side sliding strips adapted to the rectangular sliding grooves are reserved on the opposite sides of the plug.

[0012] Furthermore, the two supports of the V-shaped groove are respectively provided with coaxial through holes, and the same T-shaped single-ended anti-loosening bolt is inserted between the two through holes. The stud of the single-ended anti-loosening bolt passes through the first through hole, inserts into the sleeve, and then screws a nut into the second through hole. The side of the cylindrical block is provided with two horizontal and mutually centrally symmetrical wedge holes, which are connected to the cylindrical insertion holes. The outer circumference of the insulating core rod is provided with rectangular shoulders that are adapted to the wedge holes near both ends. The same U-shaped wedge is inserted into the two wedge holes on the same cylindrical block to lock the end of the insulating core rod to the cylindrical block. The outer circumference of the cylindrical block is provided with an annular groove near the silicone umbrella skirt. The two ends of the silicone umbrella skirt wrap around the annular groove. By providing a silicone umbrella skirt that wraps around the annular groove at both ends, the waterproof and rust-proof effect at the joint can be improved.

[0013] Furthermore, the bottom of the hexagonal sink is provided with insulating pads on the front and rear sides of the bent hanger. The insulating pads include two semi-rings, one and two, which are symmetrical about the hanging ring. Each of the opposite sides of the semi-rings has a clamping groove. The middle of the semi-rings has a coaxial pin hole, and the same pin rod is inserted between the two pin holes. Near the top of the bent hanger, there is a combination hole that matches the position and diameter of the pin rod, so that the combination between the fixing plate and the bent hanger is more secure.

[0014] Secondly, a method for using a lightning protection porcelain insulator is provided, including the following steps:

[0015] S1: Before use, select a single or double set of bending rods according to the number of cables to be hoisted. Then, pass the hanging ring end of the bending rod through the strip hole of the fixing plate from bottom to top. Then, assemble and fix the screw plug, half ring one and half ring two in sequence.

[0016] S2: Then pull all the balls simultaneously, causing the top of the arc-shaped pressure rod to retract into the annular hole. Once the inner circumference of the glass plate is pressed against the annular protrusion on the outer circumference of the fixed plate, release the balls. At this point, all the arc-shaped pressure rods are pressed against the glass plate. Then, pass the flexible wire through the L-shaped wire hole and fix it to the bottom of the terminal block. The terminal block is grounded through the wire.

[0017] S3: Finally, fix the V-groove of the metal connector to the corresponding plug sleeve with a single-headed anti-loosening bolt to complete the installation of the silicone rubber cylindrical insulator. Then, fix the hanging ring at the top of the bent rod in the device to the power tower, and then fix the cable to the metal terminal at the bottom of the device. At this time, the lightning ring is set in a ring shape above the silicone rubber cylindrical insulator. When lightning strikes, it will provide lightning protection for the silicone rubber cylindrical insulator from all directions. If there is heavy rain, it will be used in conjunction with the glass plate to provide rain protection for the silicone rubber cylindrical insulator below.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. By setting a lightning ring in a ring shape above the silicone rubber cylindrical insulator, the silicone rubber cylindrical insulator can be protected from lightning from all directions. With the glass plate, it can also play a certain role in protecting it from rain and dust. During regular cleaning operations, only the upper surface of the glass plate closer to the power tower needs to be cleaned, reducing the difficulty and danger of the work.

[0020] 2. With the steel wire and pull balls in place, when the glass plate needs to be installed, simply pull all the pull balls simultaneously so that the top of the curved pressure rod retracts into the annular hole. Then, after the inner circumference of the glass plate presses against the annular protrusion on the outer circumference of the fixed plate, the pull balls can be released. Under the action of the compression spring, all the curved pressure rods will press onto the glass plate.

[0021] 3. By setting up a drip tray that is attached to the top of the silicone umbrella skirt and tilted, when rainwater falls on the drip tray, it will be intercepted by the drip tray with the largest diameter first, and then it will gather at the lowest point and drip away from the silicone umbrella skirt, thus avoiding it from flowing down the outer wall of the silicone umbrella skirt and avoiding flashover. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a lightning protection porcelain insulator proposed in this invention;

[0023] Figure 2 This is a bottom view schematic diagram of the structure of a lightning protection porcelain insulator proposed in this invention;

[0024] Figure 3 This is a side view of a lightning protection porcelain insulator proposed in this invention;

[0025] Figure 4 This invention proposes a porcelain insulator for lightning protection. Figure 3 Schematic diagram of the cross-sectional structure along line AA;

[0026] Figure 5 This invention proposes a porcelain insulator for lightning protection. Figure 4 Enlarged structural diagram at point B;

[0027] Figure 6 This is an exploded view of the Y-shaped fork and drip tray in a lightning protection porcelain insulator proposed in this invention;

[0028] Figure 7 This is a cross-sectional view of a Y-shaped fork head for lightning protection porcelain insulator proposed in this invention;

[0029] Figure 8 This is an assembly diagram of the fixing plate and the bent suspension rod in a lightning protection porcelain insulator proposed in this invention;

[0030] Figure 9 This is a partial cross-sectional view of the fixing plate in a porcelain insulator for lightning protection proposed in this invention;

[0031] Figure 10 This is a schematic diagram of the overall structure of a second embodiment of a lightning protection porcelain insulator proposed in this invention;

[0032] Figure 11 This is an exploded view of the bent suspension rod in Embodiment 2 of the lightning protection porcelain insulator proposed in this invention.

[0033] In the diagram: 1. Fixed plate; 101. Strip-shaped perforation; 102. Annular hole; 103. Hexagonal recess; 104. Mounting slot; 105. L-shaped wire hole; 106. Self-locking screw hole; 2. Lightning ring; 3. Insulating pad; 301. Half ring one; 302. Half ring two; 303. Pin hole; 304. Pin rod; 4. Drain hole; 5. Bending rod; 6. Terminal block; 601. Flexible wire; 7. Glass plate; 8. Drip tray; 801. Water inlet tip; 802. Steering cap recess; 803. Support Support rod; 804, U-shaped groove; 805, rectangular slide groove; 9, insert block; 901, side slide bar; 10, silicone umbrella skirt; 11, metal terminal; 12, arc-shaped pressure rod; 13, screw plug; 14, metal hanging end; 15, single-head anti-loosening bolt; 16, hanging column; 17, thrust ball bearing; 18, insert sleeve; 19, insulating core rod; 191, rectangular shoulder; 20, spring baffle; 21, steel wire; 22, compression spring; 23, U-shaped wedge; 24, wedge hole; 25, cylindrical insert hole. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Example 1, refer to Figures 1-9This solution provides a lightning protection porcelain insulator, which includes an integral fixed plate 1. An annular protrusion is pre-drilled near the top of the circumferential edge of the fixed plate 1, and a glass plate 7 is fitted onto the annular protrusion. The glass plate 7 has a downward-opening trumpet-shaped structure. A lightning-attracting ring 2 is fitted onto the circumferential edge of the glass plate 7 away from the fixed plate 1. A flexible wire 601 is inserted into the lightning-attracting ring 2 below the glass plate 7. An L-shaped wire hole 105 is opened on the circumferential side wall of the fixed plate 1 near the flexible wire 601, communicating with its upper part. The flexible wire 601 passes through the L-shaped wire hole 105 and is electrically connected to a terminal block 6. In use, lightning is conducted to the ground via a grounding wire through the terminal block 6. A hexagonal recess 103 is opened in the middle of the upper surface of the fixed plate 1, and a strip-shaped through hole 101 is opened at the bottom of the hexagonal recess 103. The bottom of the settling tank 103 has a strip-shaped perforation 101 that extends downward through the fixed plate 1. A bent hanging rod 5, bent into a "V" shape, is inserted into the strip-shaped perforation 101. A hanging ring is reserved at the top of the bent hanging rod 5, and a plug sleeve 18 is wound and fixed at the bottom of the bent hanging rod 5. A single-headed anti-loosening bolt 15 is inserted into the plug sleeve 18. A silicone rubber cylindrical insulator is fixed to the plug sleeve 18 by the single-headed anti-loosening bolt 15. A lightning-attracting ring 2, which is set above the silicone rubber cylindrical insulator in a ring-shaped surround, can provide lightning protection for the silicone rubber cylindrical insulator from all directions. In conjunction with the glass plate 7, it can also play a certain role in protecting it from rain and dust. During regular cleaning operations, only the upper surface of the glass plate 7, which is closer to the power tower, needs to be cleaned, reducing the difficulty and danger of the work.

[0036] Reference Figures 1-4 The inner circumference of the lightning-attracting ring 2 has a pre-reserved annular protrusion on the lower surface of the glass disk 7, and the inner circumference of the lightning-attracting ring 2 has a pre-reserved anti-detachment annular groove above the outer edge of the glass disk 7. A limiting ring is embedded in the anti-detachment annular groove to tightly fix the outer edge of the glass disk 7 to the lightning-attracting ring 2. The outer circumference of the fixing disk 1 has multiple annular holes 102 near the top, symmetrically distributed in a C-shaped cross-section. Another outlet of the annular hole 102 is located at the top of the fixing disk 1, and the bottom of the annular hole 102... A spring baffle 20 is fixed to the end outlet by screws, and a C-shaped arc-shaped pressure rod 12 is rotatably connected in the annular hole 102. A compression spring 22 is fixed between the bottom end of the arc-shaped pressure rod 12 and the spring baffle 20. The top end of the arc-shaped pressure rod 12 is pressed tightly against the upper surface of the glass disk 7 under the pushing action of the compression spring 22. By setting the arc-shaped pressure rod 12 with an overall C-shaped structure, the top structure of the fixed disk 1 can be kept simple, thereby preventing the parts from being exposed to the outside and being corroded or rusted, and improving the service life of the device.

[0037] Reference Figure 5 and Figure 9The spring baffle 20 has a rope hole in the middle with a diameter smaller than that of the compression spring 22, and a steel wire 21 passes through the rope hole. One end of the steel wire 21 is fixed to the bottom end of the arc-shaped pressure rod 12, and the other end of the steel wire 21 is fixed to a pull ball. When the glass plate 7 needs to be installed, all the pull balls need to be pulled at the same time so that the top of the arc-shaped pressure rod 12 retracts into the annular hole 102. After that, the inner circumference of the glass plate 7 is pressed against the annular protrusion on the outer circumference of the fixed plate 1, the pull balls can be released. Under the action of the compression spring 22, all the arc-shaped pressure rods 12 can be pressed onto the glass plate 7.

[0038] Reference Figure 2 and Figure 8 Two self-locking screw holes 106 are centrally symmetrically distributed near the circumferential edge on the lower surface of the fixed plate 1. A hanging column 16 is screwed into each of the two self-locking screw holes 106. The bottom end of each hanging column 16 has an anti-detachment locking groove, and the width of the anti-detachment locking groove is adapted to the diameter of the bent hanging rod 5. The bent hanging rod 5 bends with the hanging ring as the center point, and both ends of the bent hanging rod 5 pass downward through the strip-shaped through hole 101 and bend to both sides, and pass through the corresponding anti-detachment locking groove. The outer circumferential wall of the hanging column 16 has a threaded groove near the bottom end, and a screw plug 13 is screwed into the outer circumferential wall of the hanging column 16 near the bottom end. With this setting, not only can the fixed plate 1 be tightly hung on the bent hanging rod 5, but the overall tensile strength of the bent hanging rod 5 is also improved, and the overall load-bearing capacity is increased.

[0039] Reference Figure 1 , Figure 2 The glass plate 7 has two drainage holes 4, which are located on the front and back sides of the hanging ring respectively. The drainage holes 4 not only prevent rainwater from accumulating and causing continuous water flow, but also reduce the overall wind resistance of the glass plate 7 and reduce the overall swaying when the wind is strong.

[0040] Reference Figure 4 , Figure 8 and Figure 9 The upper surface of the fixed plate 1 has an installation slot 104 at the top outlet of the L-shaped wire hole 105, and the bottom end of the terminal 6 has a screw hole for fixing the flexible wire 601. Both ends of the flexible wire 601 are welded with external thread tubes for easy installation and wire threading.

[0041] Reference Figure 4 and Figure 6The silicone rubber cylindrical insulator includes symmetrical and identical metal terminals 11 and metal hook-on terminals 14. The metal hook-on terminal 14 includes an upward-opening V-shaped groove, with a cylindrical block pre-reserved at the bottom center of the V-shaped groove. A cylindrical insertion hole 25 is formed on the lower surface of the cylindrical block. The same insulating core rod 19 is inserted between the two cylindrical insertion holes 25 of the metal hook-on terminal 14 and the metal terminal 11. The outer circumference of the insulating core rod 19 is wrapped with a silicone umbrella skirt 10. The silicone umbrella skirt 10 includes multiple stacked single discs, and a smooth rod is pre-reserved near the top of the outer circumference of the silicone umbrella skirt 10. A thrust ball bearing 17 is fixed to the bottom of the smooth rod, and a support rod 803 is fixed to the top of the thrust ball bearing 17. A ball head is pre-reserved at the top of the support rod 803, and an integrally inclined drip tray 8 is rotatably connected to the top of the support rod 803. The lower part of the drip tray 8... The surface has a pre-reserved turning cap recess 802 that forms a spherical rotation connection with the ball head. The area of ​​the drip plate 8 is larger than the diameter of the largest single plate in the silicone umbrella skirt 10. The bottom end of the drip plate 8 has a pre-reserved water inlet tip 801, and the end of the drip plate 8 away from the water inlet tip 801 has a U-shaped groove 804. The inner walls of the opposite sides of the U-shaped groove 804 have rectangular sliding grooves 805. A plug 9 is slidably inserted into the U-shaped groove 804. The two opposite sides of the plug 9 have pre-reserved side sliding strips 901 that are adapted to the rectangular sliding grooves 805. By setting the drip plate 8 that is fitted onto the silicone umbrella skirt 10 near the top and tilted, when there is still rainwater falling on the drip plate 8, it will be intercepted first by the drip plate 8 with the largest diameter, and then it will gather at the lowest point and drip away from the silicone umbrella skirt 10, avoiding flowing down along the outer wall of the silicone umbrella skirt 10 and avoiding flashover.

[0042] Reference Figure 6 and Figure 7 The two rods of the V-shaped groove have coaxial through holes, and a single-headed anti-loosening bolt 15 with a T-shaped structure is inserted between the two through holes. The stud of the single-headed anti-loosening bolt 15 passes through the first through hole, inserts into the sleeve 18, and then screws a nut into the second through hole. The side of the cylindrical block has two horizontal and mutually centrally symmetrical wedge holes 24. The wedge holes 24 are connected to the cylindrical insertion holes 25. The outer circumference of the insulating core rod 19 has rectangular shoulders 191 that are adapted to the wedge holes 24 near both ends. The same U-shaped wedge strip 23 is inserted into the two wedge holes 24 on the same cylindrical block to lock the end of the insulating core rod 19 to the cylindrical block. The outer circumference of the cylindrical block has an annular groove near the end of the silicone umbrella skirt 10. The two ends of the silicone umbrella skirt 10 wrap the annular groove. By setting the silicone umbrella skirt 10 that wraps the annular groove at both ends, the waterproof and rustproof effect at the joint can be improved.

[0043] Reference Figure 1 and Figure 8The bottom of the hexagonal sink 103 is provided with insulating pads 3 on the front and rear sides of the bent hanger 5. The insulating pads 3 include semi-ring one 301 and semi-ring two 302 that are symmetrical about the hanging ring. Each of the opposite sides of semi-ring one 301 and semi-ring two 302 has a pre-reserved pressing groove. The middle of semi-ring one 301 and semi-ring two 302 is respectively provided with a coaxial pin hole 303. The same pin rod 304 is inserted between the two pin holes 303. The bent hanger 5 has a combination hole near the top that matches the position and diameter of the pin rod 304, so that the combination between the fixed plate 1 and the bent hanger 5 is more secure.

[0044] Example 2, refer to Figures 9-10 After the bent rod 5 passes through the anti-detachment locking slots of the two hanging columns 16, it bends towards the middle at the same time and is fixed to the outer wall of the same plug sleeve 18.

[0045] This solution also provides a method for using porcelain insulators for lightning protection, including the following steps:

[0046] S1: Before use, select a single or double set of bending rods 5 according to the number of cables to be hoisted. Then, pass the hanging ring end of the bending rod 5 through the strip-shaped through hole 101 of the fixing plate 1 from bottom to top. Then, assemble and fix the screw plug 13, half ring one 301 and half ring two 302 in sequence.

[0047] S2: Then pull all the balls simultaneously, causing the top of the arc-shaped pressure rod 12 to retract into the annular hole 102. After the inner circumference of the glass plate 7 presses against the annular protrusion on the outer circumference of the fixed plate 1, the balls can be released. At this time, all the arc-shaped pressure rods 12 are pressed on the glass plate 7. Then, the flexible wire 601 is passed through the L-shaped wire hole 105 and fixed to the bottom of the terminal 6. The terminal 6 is grounded through the wire.

[0048] S3: Finally, fix the V-groove of the metal connector 14 to the corresponding plug sleeve 18 with a single-headed anti-loosening bolt 15 to complete the installation of the silicone rubber cylindrical insulator. Then, fix the hanging ring at the top of the bent rod 5 in the device to the power tower, and then fix the cable to the metal terminal 11 at the bottom of the device. At this time, the lightning ring 2 is set in a ring shape above the silicone rubber cylindrical insulator. When lightning strikes, it will provide lightning protection for the silicone rubber cylindrical insulator from all directions. If there is heavy rain, it will provide rain protection for the silicone rubber cylindrical insulator below it in conjunction with the glass plate 7.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A lightning-protected porcelain insulator comprising a monolithic fixing disc (1), characterized in that, The fixed disk (1) has a pre-reserved annular protrusion near the top edge, and a glass disk (7) is fitted onto the annular protrusion. The glass disk (7) has a downward-opening trumpet-shaped structure, and a lightning rod ring (2) is fitted onto the circumferential edge of the glass disk (7) away from the fixed disk (1). A flexible wire (601) is inserted into the lightning rod ring (2) below the glass disk (7), and an L-shaped wire hole (105) is opened on the circumferential sidewall of the fixed disk (1) near the flexible wire (601) and communicates with its upper part. The flexible wire (601) passes through the L-shaped wire hole (105) and is electrically connected to a terminal (6). A hexagonal groove (103) is opened in the middle of the upper surface of the fixed plate (1), and a strip-shaped through hole (101) is opened at the bottom of the hexagonal groove (103). A strip-shaped through hole (101) is opened in the middle of the bottom of the hexagonal groove (103) and penetrates the fixed plate (1) downward. A bent hanging rod (5) is inserted into the strip-shaped through hole (101). A hanging ring is reserved at the top of the bent hanging rod (5), and a plug-in pipe sleeve (18) is wound and fixed at the bottom of the bent hanging rod (5). A single-headed anti-loosening bolt (15) is inserted into the plug-in pipe sleeve (18). A silicone rubber cylindrical insulator is fixed to the plug-in pipe sleeve (18) by the single-headed anti-loosening bolt (15). The inner circumference of the lightning-attracting ring (2) is provided with an annular protrusion on the lower surface of the glass disk (7), and the inner circumference of the lightning-attracting ring (2) is provided with an anti-detachment annular groove above the outer edge of the glass disk (7), and a limit ring is embedded in the anti-detachment annular groove; the outer circumference of the fixed disk (1) is provided with multiple annular holes (102) that are centrally symmetrically distributed and have a C-shaped longitudinal section near the top, and another outlet of the annular hole (102) is located at the top of the fixed disk (1), and a spring baffle (20) is fixed at the bottom outlet of the annular hole (102) by screws, and a C-shaped arc pressure rod (12) is rotatably connected in the annular hole (102), and a compression spring (22) is fixed between the bottom end of the arc pressure rod (12) and the spring baffle (20), and the top end of the arc pressure rod (12) is pressed tightly against the upper surface of the glass disk (7) under the pushing action of the compression spring (22).

2. A lightning-protected porcelain insulator according to claim 1, characterized in that The spring baffle (20) has a rope hole in the middle with a diameter smaller than that of the compression spring (22), and a steel wire (21) passes through the rope hole. One end of the steel wire (21) is fixed to the bottom end of the arc-shaped pressure rod (12), and the other end of the steel wire (21) is fixed with a pull ball.

3. A lightning-protected porcelain insulator according to claim 2, characterized in that The lower surface of the fixed plate (1) has two self-locking screw holes (106) that are centrally symmetrically distributed near the circumferential edge. Each of the two self-locking screw holes (106) is screwed with a hanging column (16). The bottom end of each of the two hanging columns (16) is provided with an anti-detachment locking groove. The width of the anti-detachment locking groove is adapted to the diameter of the bent hanging rod (5). The bent hanging rod (5) bends with the hanging ring as the center bending point. Both ends of the bent hanging rod (5) pass downward through the strip-shaped through hole (101) and bend to both sides, and pass through the corresponding anti-detachment locking groove. The outer circumferential wall of the hanging column (16) is provided with a threaded groove near the bottom end. The outer circumferential wall of the hanging column (16) is screwed with a screw plug (13) near the bottom end.

4. A lightning-protected porcelain insulator according to claim 3, characterized in that The glass plate (7) has two drainage holes (4), and the two drainage holes (4) are located on the front and back sides of the hanging ring respectively.

5. A lightning-protected porcelain insulator according to claim 4, characterized in that The upper surface of the fixed plate (1) has an installation slot (104) at the top outlet of the L-shaped wire hole (105), and the bottom end of the terminal (6) has a screw hole for fixing the flexible wire (601). Both ends of the flexible wire (601) are welded with external thread tubes.

6. A lightning-protected porcelain insulator according to claim 5, characterized in that The silicone rubber cylindrical insulator includes symmetrical and identical metal terminals (11) and metal hook-on terminals (14). The metal hook-on terminal (14) includes an upward-opening V-shaped groove, and a cylindrical block is reserved in the middle of the bottom end of the V-shaped groove. A cylindrical insertion hole (25) is opened on the lower surface of the cylindrical block. The same insulating core rod (19) is inserted between the two cylindrical insertion holes (25) of the metal hook-on terminal (14) and the metal terminal (11). The outer circumference of the insulating core rod (19) is wrapped with a silicone umbrella skirt (10). The silicone umbrella skirt (10) includes multiple stacked single discs. A bare rod is reserved near the top of the outer circumference of the silicone umbrella skirt (10). A thrust ball bearing (17) is fixed at the bottom of the bare rod, and a support top rod is fixed at the top of the thrust ball bearing (17). 803), the top of the support rod (803) is reserved with a ball head, and the top of the support rod (803) is rotatably connected to an integrally inclined drip plate (8). The lower surface of the drip plate (8) is reserved with a turning cap recess (802) that forms a spherical rotatable connection with the ball head. The area of ​​the drip plate (8) is larger than the largest single plate diameter in the silicone umbrella skirt (10). The bottom end of the drip plate (8) is reserved with a water inlet tip (801), and a U-shaped groove (804) is opened at the end of the drip plate (8) away from the water inlet tip (801). Rectangular sliding grooves (805) are opened on the inner walls of the opposite sides of the U-shaped groove (804). A plug (9) is slidably inserted in the U-shaped groove (804). Side sliding strips (901) that are adapted to the rectangular sliding grooves (805) are reserved on the opposite sides of the plug (9).

7. A lightning-protected porcelain insulator according to claim 6, characterized in that The two rods of the V-groove are respectively provided with coaxial through holes, and the same T-shaped single-headed anti-loosening bolt (15) is inserted between the two through holes. The stud of the single-headed anti-loosening bolt (15) passes through the first through hole, inserts the sleeve (18), and the second through hole in sequence, and then screws a nut on it. The side of the cylindrical block is provided with two horizontal and mutually centrally symmetrical wedge holes (24). The wedge holes (24) are connected to the cylindrical insertion hole (25). The outer circumference of the insulating core rod (19) is provided with rectangular shoulders (191) that are adapted to the wedge holes (24) near both ends. The same U-shaped wedge strip (23) is inserted into the two wedge holes (24) on the same cylindrical block. The outer circumference of the cylindrical block is provided with an annular groove near the silicone umbrella skirt (10). The two ends of the silicone umbrella skirt (10) wrap the annular groove.

8. A lightning-protected porcelain insulator according to claim 7, characterized in that The bottom of the hexagonal sinker (103) is provided with insulating pads (3) on the front and rear sides of the bent hanging rod (5). The insulating pads (3) include a semi-ring one (301) and a semi-ring two (302) that are symmetrical about the hanging ring. Each of the semi-ring one (301) and the semi-ring two (302) has a clamping groove on the opposite side. The semi-ring one (301) and the semi-ring two (302) have coaxial pin holes (303) in the middle. The same pin rod (304) is inserted between the two pin holes (303). The bent hanging rod (5) has a combination hole near the top that matches the position and diameter of the pin rod (304).

9. A lightning protection porcelain insulator using method, comprising the lightning protection porcelain insulator of claim 8, characterized in that, Includes the following steps: S1: Before use, select a single or double set of bending rods (5) according to the number of cables to be hoisted. Then, pass the hanging ring end of the bending rod (5) through the strip hole (101) of the fixing plate (1) from bottom to top. Then, assemble and fix the screw plug (13), half ring one (301) and half ring two (302) in sequence. S2: Then pull all the balls at the same time, so that the top of the arc-shaped pressure rod (12) retracts into the annular hole (102). After the inner circumference of the glass plate (7) is pressed against the annular protrusion on the outer circumference of the fixed plate (1), the balls can be released. At this time, all the arc-shaped pressure rods (12) are pressed on the glass plate (7). Then, the soft wire (601) is passed through the L-shaped wire hole (105) and fixed to the bottom of the terminal (6). The terminal (6) is grounded through the wire. S3: Finally, fix the V-groove of the metal connector (14) to the corresponding plug sleeve (18) with a single-headed anti-loosening bolt (15), thus completing the installation of the silicone rubber cylindrical insulator. Then fix the hanging ring at the top of the bent rod (5) in the device to the power tower, and then fix the cable to the metal terminal (11) at the bottom of the device. At this time, the lightning ring (2) is set in a ring shape above the silicone rubber cylindrical insulator. When lightning strikes, it will protect the silicone rubber cylindrical insulator from lightning in all directions. If there is heavy rain, it will protect the silicone rubber cylindrical insulator below it from rain in conjunction with the setting of the glass plate (7).

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