Anti-aging porcelain insulator structure

Abstract

The invention relates to the technical field of insulators, in particular to an anti-aging porcelain insulator structure which comprises an insulator element, a connecting cap and a connecting pin, a connecting ball is mounted at one end of the connecting pin, and the connecting cap comprises a first clamping hemisphere, a first lock cap, a second clamping hemisphere, a second lock cap, an air bag body, a conical wide-mouth groove and a cylindrical groove. The air bag main body provides enough moving space for the connecting ball, so that the connecting ball can rotate and ascend and descend relative to the connecting pin, the distance between insulator elements is automatically adjusted, and the stable distance between a wire and a jumper wire is kept; as the air bag main body is additionally arranged between the connecting pin and the connecting ball, when the connecting ball relatively moves on the inner side of the connecting pin, the air bag main body can effectively absorb and disperse impact and vibration energy generated by the air bag main body, the contact surface of the connecting pin and the connecting ball can be protected, and damage and aging caused by direct contact and friction are prevented.

Description

Technical Field

[0001] The invention relates to the technical field of insulators, in particular to an anti-aging porcelain insulator structure. Background Art

[0002] Suspension insulators are a vital component of the power system. They are suspended on the power tower or pole in a special way and are an indispensable insulating device in high-voltage power lines. This type of insulator is mainly made of high-quality insulating materials. The porcelain material has excellent electrical insulation performance and mechanical strength, and can withstand the effects of high voltage electricity and prevent current leakage. In addition, the suspension insulator is also equipped with metal accessories such as steel feet, iron caps and flanges, which are tightly combined with the insulating material through adhesives or mechanical methods to provide stable support and connection for the insulator. The main function is to suspend the wire so that the wire maintains the necessary insulation distance between the wire and the tower or pole and the ground, thereby preventing the current from flowing through unexpected paths and ensuring the safety and reliability of power transmission. In the power system, suspension insulators are not only used for straight poles to support and insulate wires, but are also often used in special locations such as tension towers and corner towers to adapt to different layouts and requirements of the line.

[0003] The suspension insulator string located between the conductor and the jumper forms a flexible suspension system through the combination and connection of multiple insulator elements. This system uses the electrical insulation performance of the insulator elements to effectively isolate the current between the conductor and the jumper and the power tower or pole and the earth, preventing current leakage and short circuit faults. The ball-and-socket connection is a commonly used connection method between suspension insulator elements. Its characteristics are that the upper end of the iron cap of the insulator element is designed as a bowl head (ball socket), and the lower end of the steel foot is designed as a ball head. The ball head of one insulator is inserted into the ball socket of another insulator and fixed by inserting a W-shaped or R-shaped steel pin. When wind force acts on the suspension insulator string, the entire string will swing and deflect. The wind force exerts a dynamic and changing force on the insulator string. The magnitude and direction of this force will change with the changes in wind speed, wind direction and the characteristics of the insulator string itself (such as shape, size, material, etc.). If the ball head and the ball socket are rigidly connected, the shed will directly bear all the wind impact, which can easily lead to damage or deformation of the shed. If there is a certain movable angle between the ball head and the ball socket, the wind can be effectively dispersed between the various components of the insulator string, and the wind force borne by each shed can be reduced. However, due to the movable angle between the ball head and the ball socket, repeated relative motion will occur between them, and this relative motion will cause wear and aging of the contact surface between the ball head and the ball socket.

[0004] Under strong winds (such as wind disasters), wear will be more serious, the ball head and the ball socket will wear and age quickly, and the suspension insulator string will have a large swing and deflection, which will reduce the air gap between the live part of the lower end of the insulator string and the tower or other grounded parts. When this gap is small to a certain extent, discharge will occur, that is, wind deflection flashover, which will cause line tripping and power outages. If a heavy hammer is installed on the drainage line of the suspension insulator string to reduce the wind deflection angle of the drainage line, the installation of a heavy hammer will increase the weight of the drainage line, which will cause the suspension insulator string and its connecting parts to bear greater mechanical stress even in the absence of wind disasters. Long-term exposure to excessive mechanical stress will still accelerate the aging and damage of the insulator string.

[0005] Therefore, an aging-resistant porcelain insulator structure is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide an aging-resistant porcelain insulator structure. In order to solve the problem that under the action of wind, the movable angle between the ball head and the ball socket of the suspension insulator string can disperse the wind force but is prone to wear and aging, and the installation of a heavy hammer can reduce the wind deflection angle but will increase mechanical stress and accelerate the aging and damage of the insulator string, a plurality of insulator elements with airbag structures are connected in series, the elasticity and buffering performance of the airbag and the flexible and variable space design are utilized to effectively disperse the wind force, reduce wear, and adaptively adjust the spacing between the insulator elements to maintain a stable distance between the conductor and the jumper.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An aging-resistant porcelain insulator structure comprises an insulator element, a connection cap and a connection foot, wherein a connection ball is installed at one end of the connection foot, the connection cap comprises a first clamping hemisphere, a first locking cap, a second clamping hemisphere, a second locking cap, an airbag body, a tapered wide-mouth groove and a cylindrical groove, the second clamping hemisphere is arranged on one side of the first clamping hemisphere, the first locking cap is installed on the outside of the first clamping hemisphere, the second locking cap is arranged on the outside of the second clamping hemisphere, the tapered wide-mouth groove is arranged at the upper ports of the first clamping hemisphere and the second clamping hemisphere, the cylindrical groove is arranged at the bottom end of the tapered wide-mouth groove, and the airbag body is located in the tapered wide-mouth groove of the first clamping hemisphere;

[0009] The porcelain insulator string is formed by a plurality of the insulator elements connected in series, two adjacent insulator elements are assembled through corresponding connecting caps and connecting pins, connected by snap-fit ​​hemispheres one and two, and locked by locking caps one and two. The movable range of the connecting ball is limited to the inner side of the two cylindrical grooves, the connecting ball wrapped by the airbag body adjusts its position on the inner side of the cylindrical groove through elastic deformation of the airbag body, the connecting cap connected to the connecting ball adjusts its height and swing angle as the connecting ball changes, and the distance between the two adjacent insulator elements is spontaneously adjusted as the connecting cap and the connecting pin are switched.

[0010] It can be seen from the above scheme that the existing technology will use traditional rigid connection structures, such as bolts, nuts and other fasteners to connect the insulator elements in series. Compared with the existing technology, the advantage of this solution is that it adopts a flexible airbag body and an adjustable connection cap design, allowing the connection ball to move freely within a certain range, so that the insulator string can adaptively adjust the height and swing angle, thereby effectively absorbing and dispersing external stress, and improving the overall aging resistance and stability.

[0011] Preferably, the open end and the bottom end of the cylindrical groove are both provided with arc surfaces, the arc surface of the cylindrical groove corresponds to the circumferential surface of the connecting ball, and the diameter of the interface between the conical wide-mouth groove and the cylindrical groove is smaller than that of the cylindrical groove.

[0012] It can be seen from the above scheme that the prior art uses straight grooves or V-shaped grooves in the connection structure of the insulator element. Compared with the prior art, this technical solution provides arc surfaces at both the open end and the bottom end of the cylindrical groove, so that the cylindrical groove and the circumferential surface of the connecting ball fit better, reducing stress concentration points and improving the stability and durability of the connection. At the same time, this design also makes the movement of the connecting ball in the cylindrical groove smoother, further enhancing the adaptive adjustment capability of the insulator string.

[0013] Preferably, the outer circumferential surface of the airbag body is provided with a contour ring, which is embedded in the inner surface of the cylindrical groove of the engaging hemisphere one, and the inner surface of the cylindrical groove of the engaging hemisphere two is provided with an annular groove, and the contour ring and the annular groove match each other.

[0014] It can be seen from the above scheme that the prior art uses simple friction fit or adhesive fixation between the airbag body and the cylindrical grooves of the first and second clamping hemispheres. Compared with the prior art, the present technical scheme provides a contour ring on the outer circumferential surface of the airbag body, and makes it fit and install on the inner surface of the cylindrical groove of the first clamping hemisphere, and at the same time, provides a ring groove matching the contour ring on the inner surface of the cylindrical groove of the second clamping hemisphere. This design significantly improves the stability and fixation of the airbag body in the cylindrical groove, reduces the risk of loosening or falling off due to vibration or external force, and thus prolongs the service life and reliability of the insulator string.

[0015] Preferably, the lock cap 1 includes a bolt groove, an extrusion block and a movable connecting shaft, the bolt groove is opened on the outer surfaces of the locking hemisphere 1, the lock cap 1, the locking hemisphere 2 and the lock cap 2, the extrusion block is arranged in the center of the inner surface of the lock cap 1, the movable connecting shaft is installed in the center of the inner bottom surface of the lock cap 1, and the lock cap 1 is connected to the center of the bottom surface of the locking hemisphere 1 through the movable connecting shaft.

[0016] It can be seen from the above scheme that the prior art uses traditional thread locking or welding to fix the lock cap on the locking hemisphere. Compared with the prior art, the lock cap 1 in the present technical solution is connected to the center of the bottom surface of the locking hemisphere 1 through a movable connecting shaft. This design allows the lock cap 1 to have a certain degree of freedom of movement while maintaining a stable connection, which is convenient for installation and adjustment. In addition, the opening of the bolt slot provides convenience for installation, and the design of the extrusion block enhances the locking effect and prevents loosening, which improves the connection stability and reliability of the insulator string as a whole.

[0017] Preferably, the engaging hemisphere 1 includes a built-in slide groove and an extrusion piece, the built-in slide groove is opened on the circumferential side wall surface of the engaging hemisphere 1, and the extrusion piece is arranged inside the built-in slide groove.

[0018] It can be seen from the above scheme that the prior art will use a fixed connection or a simple buckle structure to replace the snap-fit ​​hemisphere 1 with a built-in slide groove and an extrusion. Compared with the prior art, the present technical solution provides an adjustable and lockable connection mechanism by arranging a built-in slide groove and an extrusion in the snap-fit ​​hemisphere 1. This design enables the snap-fit ​​hemisphere 1 to adjust its position according to actual needs when connected to other components, and achieve a stable locking effect through the extrusion, thereby improving the assembly flexibility and connection stability of the insulator string.

[0019] Preferably, a V-shaped groove is provided at the middle end of the extrusion piece, and the extrusion block is movably connected to the extrusion piece.

[0020] It can be seen from the above scheme that the prior art will use a flat extrusion surface or a simple convex block structure to replace the extrusion with a V-groove. Compared with the prior art, this technical solution provides a more precise positioning and locking function by opening a V-groove at the middle end of the extrusion and realizing a positional movable docking with the extrusion block. The V-groove can guide the movement trajectory of the extrusion block, ensuring that the extrusion block can accurately cooperate with the extrusion, thereby improving the accuracy and stability of the connection. In addition, the design of the V-groove also helps to disperse the stress during extrusion, reduce the wear and deformation of components, and extend the service life of the insulator string.

[0021] Preferably, an airbag sub-body is provided on the inner side of the built-in slide groove, and the airbag sub-body is located between the inner wall surface of the built-in slide groove and the extrusion piece. Three through holes are opened through the built-in slide groove and the cylindrical groove. Three airbag tubes are provided on one side of the airbag sub-body, and the airbag tubes are connected with the airbag main body through the through holes.

[0022] It can be seen from the above scheme that the prior art does not use an airbag sub-body, but instead uses a mechanical locking device or sealant to fill and fix the gap between the built-in slide groove and the extrusion. Compared with the prior art, the present technical scheme achieves a more flexible and reliable sealing and buffering effect by arranging an airbag sub-body on the inner side of the built-in slide groove and connecting it with the airbag main body through an airbag tube. The airbag sub-body can automatically adjust its shape and position according to the movement of the extrusion and changes in the external environment to ensure the sealing and stability of the connection. In addition, the use of the airbag sub-body also reduces mechanical wear and vibration transmission, and improves the overall performance and service life of the insulator string. At the same time, the provision of three through holes and the airbag tube makes the connection between the airbag sub-body and the airbag main body more uniform and stable, further enhancing the reliability and durability of the connection.

[0023] Preferably, three connecting holes are formed on the side surface of the contour ring, and the airbag tube matches the connecting holes.

[0024] It can be seen from the above scheme that the alternative scheme of the prior art is to directly open a channel on the outer surface of the airbag body or the inner surface of the cylindrical groove of the engaging hemisphere one to fix the airbag tube, instead of using a contour ring with connecting holes and grooves. Compared with the prior art, this technical solution provides a more precise and stable connection method by opening three connecting holes and grooves on the side surface of the contour ring and matching them with the airbag tube. The opening of the connecting holes and grooves enables the airbag tube to be accurately positioned on the contour ring, avoiding the problem of unstable connection or poor sealing caused by position offset. At the same time, the structure of the contour ring and the connecting holes and grooves also enhances the connection strength between the airbag body and the engaging hemisphere one, and improves the overall stability and durability of the insulator string. In addition, this design is also easy to install and maintain, reducing the difficulty and cost of operation.

[0025] Preferably, the upper end opening of the airbag body is provided with a tube groove chamber, and the bottom end of the tube groove chamber is provided with a ball groove chamber.

[0026] It can be seen from the above scheme that the prior art does not set up a tube slot chamber and a ball slot chamber, but directly uses the upper end opening of the airbag body to connect other components or pipes. Compared with the prior art, this technical solution provides a more stable and flexible structure for the connection between the airbag tube and the airbag body by setting up a tube slot chamber and a ball slot chamber at the upper end opening of the airbag body. The design of the tube slot chamber enables the airbag tube to be arranged and fixed in an orderly manner, avoiding safety hazards and operational inconveniences caused by the clutter of pipes. The ball slot chamber may be used to install other functional components or realize specific connection structures, further enhancing the functionality and flexibility of the insulator string. In addition, this design also helps to improve the sealing and durability of the airbag body, ensuring the long-term stable operation of the insulator string in harsh environments.

[0027] Preferably, the opening diameter of the cylindrical groove is smaller than the outer diameter of the connecting ball, and the outer diameter of the connecting ball is smaller than the inner diameter of the contour ring.

[0028] It can be seen from the above scheme that the existing technology will make the opening diameter of the cylindrical groove equal to or slightly larger than the outer diameter of the connecting ball, and the inner diameter of the contour ring equal to or smaller than the outer diameter of the connecting ball. Compared with the existing technology, this technical solution designs the opening diameter of the cylindrical groove to be smaller than the outer diameter of the connecting ball, and at the same time ensures that the outer diameter of the connecting ball is smaller than the inner diameter of the contour ring. This size relationship not only ensures that the connecting ball can be firmly embedded in the cylindrical groove, but also avoids the situation where the connecting ball cannot smoothly enter the contour ring due to excessive size. This design improves the connection stability and reliability of the insulator string, ensures the close fit between the various components, and also facilitates installation and maintenance work.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. An aging-resistant porcelain insulator structure provides sufficient activity space for the connecting ball through the airbag body, so that the connecting ball can rotate and rise and fall relative to the connecting foot, thereby automatically adjusting the spacing of the insulator elements, maintaining a stable distance between the conductor and the jumper, and avoiding the swing and deflection of the insulator string, resulting in a shortening of the originally designed safe air gap distance, thereby ensuring the safe operation of the power system.

[0031] 2. An anti-aging porcelain insulator structure, by introducing an airbag body, effectively solves the problem of contact surface wear and aging caused by repeated relative movement of traditional insulators. The airbag body has good elasticity and buffering performance, which can absorb and disperse the impact and vibration energy generated by wind between the connecting ball and the connecting foot, thereby protecting the contact surface from damage and extending the service life of the insulator.

[0032] 3. An aging-resistant porcelain insulator structure, the airbag body is designed as a cylindrical structure, which cooperates with the spherical structure of the connecting ball. The connecting ball can realize all-round and multi-angle rotation inside the airbag body. The insulator string can spontaneously adjust its position according to the characteristics and direction of the wind force, effectively responding to the dynamic changes of wind speed and wind direction, and further improving the stability and reliability of the insulator string. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of an insulator string of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the insulator element of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the connecting cap of the present invention;

[0036] Figure 4It is a structural schematic diagram of a lock cap of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the locking hemisphere of the present invention;

[0038] Figure 6 It is a schematic diagram of the assembly structure of the airbag sub-body of the present invention;

[0039] Figure 7 It is a plane schematic diagram of the insulator string connection of the present invention;

[0040] Figure 8 It is a schematic diagram of deformation of the insulator element of the present invention.

[0041] In the figure: 1. insulator element; 2. connecting cap; 21. snap-fit ​​hemisphere 1; 211. built-in slide groove; 212. extrusion piece; 213. V-shaped groove; 214. airbag auxiliary body; 215. airbag tube; 22. locking cap 1; 221. bolt groove; 222. extrusion block; 223. movable connecting shaft; 23. snap-fit ​​hemisphere 2; 24. locking cap 2; 25. ring groove; 26. contour ring; 261. connecting hole groove; 27. airbag body; 271. tube groove chamber; 272. ball groove chamber; 28. tapered wide-mouth groove; 29. ​​cylindrical groove; 3. connecting foot; 4. connecting ball. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0043] See also Figures 1 to 8 The present invention provides an anti-aging porcelain insulator structure, and the technical solution is as follows:

[0044] An aging-resistant porcelain insulator structure comprises an insulator element 1 and a connecting cap 2 arranged at the center of the lower end of the insulator element 1, a connecting foot 3 is installed at the center of the upper end of the insulator element 1, a plurality of insulator elements 1 are connected through the connecting cap 2 and the connecting foot 3, a connecting ball 4 is installed at one end of the connecting foot 3, the connecting cap 2 comprises a snap-fit ​​hemisphere 1 21, a locking cap 1 22, a snap-fit ​​hemisphere 23, a locking cap 24, an airbag body 27, a tapered wide-mouth groove 28 and a cylindrical groove 29, the snap-fit ​​hemisphere 23 The locking cap 22 is arranged on one side of the locking hemisphere 1 21, the locking cap 22 is installed on the outer side of the locking hemisphere 1 21, the locking cap 24 is arranged on the outer side of the locking hemisphere 23, the locking hemisphere 1 21 and the locking hemisphere 2 23 are matched and docked, the locking cap 1 22 and the locking cap 24 are matched and docked, the tapered wide-mouth groove 28 is arranged on the upper ends of the locking hemisphere 1 21 and the locking hemisphere 2 23, the cylindrical groove 29 is arranged on the bottom end of the tapered wide-mouth groove 28, and the airbag body 27 is located in the tapered wide-mouth groove 28 of the locking hemisphere 1 21;

[0045] The porcelain insulator string is composed of multiple insulator elements 1 connected in series, and the head and tail ends are connected to the conductors and jumpers through connecting hardware. The connecting hardware at the head end is usually fixed on the pole or tower, and the connecting hardware at the tail end is connected to the conductor or jumper to support the entire insulator string and the conductor. Two adjacent insulator elements 1 are assembled through corresponding connecting caps 2 and connecting feet 3, connected by snap-fit ​​hemisphere 1 21 and snap-fit ​​hemisphere 2 23, and locked by locking cap 1 22 and locking cap 2 24. The movable range of the connecting ball 4 is limited to the inner side of the two cylindrical grooves 29, and the connecting ball 4 wrapped by the airbag body 27 adjusts its position on the inner side of the cylindrical groove 29 through elastic deformation of the airbag body 27. The connecting cap 2 connected to the connecting ball 4 adjusts its height and swing angle as the connecting ball 4 changes, and the distance between the two adjacent insulator elements 1 is spontaneously adjusted with the transfer between the connecting cap 2 and the connecting foot 3.

[0046] In this embodiment, compared with the engaging hemisphere 23 and the locking cap 24, the bottom ends of the engaging hemisphere 1 21 and the locking cap 1 22 are both equipped with a base, and the locking cap 1 22 is fixedly connected to the insulator element 1 through the base. The engaging hemisphere 23 and the locking cap 24 are independent of the engaging hemisphere 1 21 and the locking cap 1 22. The half wall surface of the airbag body 27 is fixedly connected to the inner surface of the cylindrical groove 29 of the engaging hemisphere 1 21, and the other half wall surface of the airbag body 27 is fixedly connected to the cylindrical groove 29 of the engaging hemisphere 23. 9 The inner surface is movably connected, and the subsequent expansion and deformation of the airbag body 27 will not change the overall position, thereby preventing the airbag body 27 from being offset. The airbag body 27 in the deflated state is still convenient for the smooth insertion of the connecting ball 4, and the airbag body 27 in the expanded state is used to accommodate the displacement of the connecting ball 4. The cylindrical groove 29 provides sufficient space for the connecting ball 4 to adjust its height and adapts to the expansion and deformation of the airbag body 27, so that the wires connected at both ends of the string can still maintain a stable distance when the string is in a twisted state.

[0047] As an embodiment of the present invention, refer to Figure 2 and Figure 3 The opening end and the bottom end of the cylindrical groove 29 are both provided with arc surfaces, and the arc surface of the cylindrical groove 29 corresponds to the circumferential surface of the connecting ball 4, and the diameter of the interface position between the tapered wide-mouth groove 28 and the cylindrical groove 29 is smaller than the cylindrical groove 29.

[0048] In this embodiment, on the one hand, the arc surface at the open end and the bottom end of the cylindrical groove 29 can make the inner wall of the cylindrical groove 29 smooth and smooth, and the connecting ball 4 and the airbag body 27 will not cause damage to the airbag body 27 due to sharp parts during the extrusion process, which is conducive to maintaining the normal use of the airbag body 27; on the other hand, the arc surface at the bottom end of the cylindrical groove 29 can be normally docked with the connecting ball 4. Under normal conditions, the suspension insulator string maintains a long straight state, and the arc surface at the open end of the cylindrical groove 29 can limit the popping out of the connecting ball 4. The connecting foot 3 provides sufficient activity space for the connecting ball 4, but the problem of string detachment will not occur.

[0049] As an embodiment of the present invention, refer to Figure 1 - Figure 3 The outer circumferential surface of the airbag body 27 is provided with a contour ring 26, which is embedded in the inner surface of the cylindrical groove 29 of the engaging hemisphere 1 21. The inner surface of the cylindrical groove 29 of the engaging hemisphere 23 is provided with an annular groove 25, and the contour ring 26 and the annular groove 25 match.

[0050] In this embodiment, when the engaging hemisphere 23 and the locking cap 24 are in a separated state from the engaging hemisphere 1 21 and the locking cap 1 22, the airbag body 27 is in a deflated state, and the shape of the airbag body 27 can be supported by the contour ring 26, so that the connecting ball 4 can be smoothly inserted into the inner side of the airbag body 27. The airbag body 27 is fixedly connected to the contour ring 26 to facilitate the shaping of the airbag body 27. No matter how the gas inside the airbag body 27 changes, the airbag body 27 as a whole always remains in a fixed position.

[0051] As an embodiment of the present invention, refer to Figure 4 The lock cap 22 includes a bolt groove 221, an extrusion block 222 and a movable connecting shaft 223. The bolt groove 221 is provided on the outer surfaces of the locking hemisphere 21, the lock cap 22, the locking hemisphere 23 and the lock cap 24. The extrusion block 222 is arranged at the center of the inner surface of the lock cap 22. The movable connecting shaft 223 is installed at the center of the inner bottom surface of the lock cap 22. The lock cap 22 is connected to the center of the bottom surface of the locking hemisphere 21 through the movable connecting shaft 223.

[0052] In this embodiment, during the installation of the engaging hemisphere 23 and the locking cap 24 with the engaging hemisphere 1 21 and the locking cap 1 22, the engaging hemisphere 1 21 and the locking cap 1 22 rotate through the movable connecting shaft 223, and the outer wall surface of the engaging hemisphere 23 is limitedly connected with the inner arc surface of the locking cap 24, so that the engaging hemisphere 23 and the locking cap 24 complete the rotation. After the rotation, the bolt grooves 221 on the end surfaces of the engaging hemisphere 1 21 and the engaging hemisphere 23 are exposed. Two groups of bolt grooves 221 are provided at the corresponding positions of the engaging hemisphere 21. The engaging hemisphere 21 and the locking cap 22 are firstly connected and fixed by bolts through the bolt grooves 221. After docking with each other, the bolt grooves 221 of the locking cap 24 are connected and fixed with the bolt grooves 221 of the engaging hemisphere 21 by bolts. The same operation is repeated on the other side to complete the installation of the connecting cap 2, the connecting foot 3 and the connecting ball 4, so as to facilitate the subsequent maintenance or replacement of the single insulator element 1.

[0053] As an embodiment of the present invention, refer to Figure 5 The engaging hemisphere 21 includes a built-in slide groove 211 and an extrusion piece 212 . The built-in slide groove 211 is opened on the circumferential side wall surface of the engaging hemisphere 21 , and the extrusion piece 212 is arranged inside the built-in slide groove 211 .

[0054] In this embodiment, when the locking hemisphere 21 and the locking cap 22 are switched, the position of the extrusion block 222 relative to the extrusion member 212 changes, and the depth of the extrusion member 212 relative to the built-in slide groove 211 is adjusted by the extrusion force between the extrusion block 222 and the extrusion member 212.

[0055] As an embodiment of the present invention, refer to Figure 5 A V-shaped groove 213 is formed at the middle end of the extrusion piece 212 , and the extrusion block 222 is movably connected to the extrusion piece 212 .

[0056] In this embodiment, when the engaging hemisphere 21 and the locking cap 22 are completely aligned, the extrusion block 222 is aligned with the most concave end of the extrusion piece 212. Once the engaging hemisphere 21 and the locking cap 22 are transferred, the extrusion block 222 slides to one side, and the extrusion block 222 squeezes the extrusion piece 212, causing it to move inward along the built-in slide groove 211.

[0057] As an embodiment of the present invention, refer to Figure 6 An airbag sub-body 214 is provided on the inner side of the built-in slide groove 211, and the airbag sub-body 214 is located between the inner wall surface of the built-in slide groove 211 and the extrusion piece 212. Three through holes are opened between the built-in slide groove 211 and the cylindrical groove 29. Three airbag tubes 215 are provided on one side of the airbag sub-body 214, and the airbag tubes 215 are connected with the airbag main body 27 through the through holes.

[0058] In this embodiment, as the extrusion piece 212 is displaced, the airbag sub-body 214 is squeezed, and the gas inside the airbag sub-body 214 is sent into the airbag main body 27 through the airbag tube 215. The airbag main body 27 expands rapidly and fills the inner side of the cylindrical groove 29, and completely wraps the connecting ball 4. Then, the displacement change of the connecting ball 4 will drive the deformation of the airbag main body 27.

[0059] As an embodiment of the present invention, refer to Figure 6 The side surface of the contour ring 26 is provided with three connection holes 261 , and the airbag tube 215 matches the connection holes 261 .

[0060] In this embodiment, the airbag tube 215 is supported by the connecting hole groove 261. No matter whether the airbag body 27 is in a deflated state or an inflated state, the contour ring 26 always maintains the overall external shape of the airbag body 27, providing a skeleton-like structure.

[0061] As an embodiment of the present invention, refer to Figure 7 and Figure 8 The upper end opening of the airbag body 27 is provided with a tube groove chamber 271 , and the bottom end of the tube groove chamber 271 is provided with a ball groove chamber 272 .

[0062] In this embodiment, the initial form of the airbag body 27 has a tube groove chamber 271 and a ball groove chamber 272 respectively on the upper and lower parts. The tube groove chamber 271 is narrower than the ball groove chamber 272 so that the airbag body 27 has sufficient deformation space when the connecting ball 4 is adjusted in displacement.

[0063] As an embodiment of the present invention, refer to Figure 2 and Figure 3 The opening diameter of the cylindrical groove 29 is smaller than the outer diameter of the connecting ball 4 , and the outer diameter of the connecting ball 4 is smaller than the inner diameter of the contour ring 26 .

[0064] In this embodiment, the opening diameter of the cylindrical groove 29 is smaller than the outer diameter of the connecting ball 4. No matter how the airbag body 27 is deformed, the connecting ball 4 is always restricted to the inner side of the cylindrical groove 29. The inner diameter of the contour ring 26 and the inner diameter inside the cylindrical groove 29 are both larger than the diameter of the connecting ball 4 to facilitate the position change of the connecting ball 4.

[0065] Working principle: The suspension insulator string is composed of multiple insulator elements 1 connected in series, and its head and tail ends are connected to the conductors and jumpers through connecting hardware. When affected by wind, the connection cap 2 and the connection foot 3 are in an active state, and the shape of the insulator string is distorted. The connection foot 3 and the connection ball 4 are an integrated structure. The connection ball 4 is separated from the connection cap 2 by an airbag body 27, and the connection ball 4 has sufficient space for movement inside the airbag body 27. Since the wind force is dispersed and applied to the connection positions between each insulator element 1, the distance between the two adjacent insulator elements 1 is correspondingly increased, reducing local stress concentration and maintaining a stable distance between the conductor and the jumper.

[0066] Specifically, in order to solve the problem that the movable angle between the ball head and the ball socket can effectively disperse the wind force, but the repeated relative movement will also cause the contact surface to wear and age. By adding an airbag body 27 between the connecting foot 3 and the connecting ball 4, whenever the connecting ball 4 moves relative to the inner side of the connecting foot 3, the airbag body 27 can effectively absorb and disperse the impact and vibration energy generated thereby, which helps to protect the contact surface between the connecting foot 3 and the connecting ball 4. No matter how the wind force and wind direction of the insulator string change, the connecting foot 3 and the connecting ball 4 are always separated by the airbag body 27. The rubber material has good elasticity and buffering properties, which prevents damage and aging caused by direct contact and friction.

[0067] In order to solve the problem that the swing deflection angle of the insulator string increases under strong wind, the originally designed safe air gap distance is shortened due to deflection, resulting in a reduction in the air gap between the live part and the grounded part. The airbag body 27 provides sufficient activity space for the connecting ball 4. The connecting ball 4 has not only the freedom of rotation but also the freedom of lifting and lowering relative to the connecting foot 3. The spacing between several insulator elements 1 will change with the wind force. The details are as follows:

[0068] When installing an insulator string or replacing a single insulator element 1, align the connection cap 2 of one insulator element 1 with the connection ball 4 of the adjacent insulator element 1. When the engaging hemisphere 1 21 and the engaging hemisphere 2 23 are in a separated state, the airbag body 27 is in a deflated state. Relying on the support of the contour ring 26 on the airbag body 27, after the connection ball 4 is inserted into the interior of the airbag body 27, the engaging hemisphere 2 23 and the engaging hemisphere 1 21 are matched and docked. The engaging hemisphere 1 21 rotates a certain angle along the inner side of the locking cap 1 22, and the bolt groove 221 on the surface of the engaging hemisphere 1 21 is exposed. The engaging hemisphere 2 23 and the locking cap 24 rotate synchronously at the same angle, and the protruding bolt groove 221 of the locking cap 24 Align the bolt groove 221 of the engaging hemisphere 1 21, align the protruding bolt groove 221 of the locking cap 1 22 with the bolt groove 221 of the engaging hemisphere 2 23, and then complete the assembly of the single insulator element 1 through the bolts. When the engaging hemisphere 1 21 rotates along the inner side of the locking cap 1 22, the extrusion block 222 moves to one side along the most concave point of the V-shaped groove 213. After being squeezed, the extrusion piece 212 moves backward along the built-in slide groove 211. Under the double squeezing of the extrusion piece 212 and the groove surface of the built-in slide groove 211, the gas inside the airbag auxiliary body 214 is quickly sent into the interior of the airbag main body 27 through the airbag tube 215, and the airbag main body 27 quickly expands and tightly wraps the connecting cap 2 and the connecting ball 4.

[0069] Under the action of wind, the height position of the connecting ball 4 changes. When the connecting ball 4 moves to the position of the tube slot chamber 271, the airbag at this position is squeezed, and only the expansion space exists at the position of the ball slot chamber 272, that is, part of the gas moves to the airbag at the position of the ball slot chamber 272, and the connecting ball 4 is still expanded and wrapped. The combined height of the connecting foot 3 and the connecting ball 4 increases, and the distance between adjacent insulator elements 1 is spontaneously adjusted to adapt to the twisting degree of the insulator string. Therefore, when several insulator elements 1 move simultaneously and at different angles, the wires and jumpers connected at both ends of the insulator string still maintain a stable distance.

[0070] In order to solve the problem of insufficient binding force of the airbag body 27 on the connecting ball 4, the initial structural form of the airbag body 27 is made from narrow to wide from top to bottom, and the opening diameter of the cylindrical groove 29 is less than the diameter of the connecting ball 4 and the diameter of the contour ring 26. When the engaging hemisphere 21 and the cylindrical groove 29 are docked, the airbag body 27 is filled in the chamber formed by the two cylindrical grooves 29. If the connecting ball 4 moves to the upper opening position of the tube groove chamber 271, because the opening diameter of the cylindrical groove 29 is less than the diameter of the connecting ball 4, the connecting ball 4 is confined to the inner side of the cylindrical groove 29 and is always wrapped by the airbag body 27.

[0071] In order to solve the problem that the wind speed and wind direction to which the insulator string is subjected are dynamically changing, the airbag body 27 is designed as a cylindrical structure and the spherical structure of the connecting ball 4 is utilized. The position change of the connecting ball 4 inside the airbag body 27 can realize all-round and multi-angle rotation, and then the connecting ball 4 can spontaneously change its position on the inner side of the connecting foot 3 according to the characteristics of the wind force.

[0072] 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 anti-aging porcelain insulator structure, comprising an insulator element (1), a connection cap (2) and a connection foot (3), characterized in that: A connecting ball (4) is installed at one end of the connecting foot (3); the connecting cap (2) comprises a locking hemisphere 1 (21), a locking cap 1 (22), a locking hemisphere 2 (23), a locking cap 2 (24), an airbag body (27), a tapered wide-mouth groove (28) and a cylindrical groove (29); the locking hemisphere 2 (23) is arranged on one side of the locking hemisphere 1 (21); the locking cap 1 (22) is installed on the outer side of the locking hemisphere 1 (21); the locking cap 2 (24) is arranged on the outer side of the locking hemisphere 2 (23); the tapered wide-mouth groove (28) is arranged at the upper ends of the locking hemisphere 1 (21) and the locking hemisphere 2 (23); the cylindrical groove (29) is arranged at the bottom end of the tapered wide-mouth groove (28); and the airbag body (27) is located in the tapered wide-mouth groove (28) of the locking hemisphere 1 (21); Two adjacent insulator elements (1) are connected to each other through a first locking hemisphere (21) and a second locking hemisphere (23), and are locked by a first locking cap (22) and a second locking cap (24). The movable range of the connecting ball (4) is limited to the inner side of two cylindrical grooves (29). The connecting ball (4) wrapped by the airbag body (27) is adjusted in position inside the cylindrical groove (29) through elastic deformation of the airbag body (27). The connecting cap (2) connected to the connecting ball (4) adjusts the height and swing angle as the connecting ball (4) changes. The distance between the two adjacent insulator elements (1) is adjusted automatically as the connecting cap (2) and the connecting foot (3) are switched.

2. The anti-aging porcelain insulator structure according to claim 1 is characterized in that: The open end and the bottom end of the cylindrical groove (29) are both provided with arc surfaces, and the arc surface of the cylindrical groove (29) is in contact with the circumferential surface of the connecting ball (4).

3. The anti-aging porcelain insulator structure according to claim 1 is characterized in that: The outer circumferential surface of the airbag body (27) is provided with a contour ring (26), and the contour ring (26) is mounted on the inner surface of the cylindrical groove (29) of the engaging hemisphere one (21). The inner surface of the cylindrical groove (29) of the engaging hemisphere two (23) is provided with an annular groove (25), and the contour ring (26) and the annular groove (25) match each other.

4. The anti-aging porcelain insulator structure according to claim 1 is characterized in that: The locking cap (22) comprises a bolt groove (221), an extrusion block (222) and a movable connecting shaft (223); the bolt groove (221) is provided on the outer surfaces of the locking hemisphere (21), the locking cap (22), the locking hemisphere (23) and the locking cap (24); the extrusion block (222) is arranged at the center of the inner surface of the locking cap (22); the movable connecting shaft (223) is installed at the center of the inner bottom surface of the locking cap (22); the locking cap (22) is connected to the center of the bottom surface of the locking hemisphere (21) through the movable connecting shaft (223).

5. The anti-aging porcelain insulator structure according to claim 3 is characterized in that: The engaging hemisphere one (21) comprises a built-in sliding groove (211) and an extrusion piece (212); the built-in sliding groove (211) is opened on the circumferential side wall surface of the engaging hemisphere one (21); and the extrusion piece (212) is arranged inside the built-in sliding groove (211).

6. The anti-aging porcelain insulator structure according to claim 5, characterized in that: A V-shaped groove (213) is provided at the middle end of the extrusion piece (212), and the extrusion block (222) is movably connected to the extrusion piece (212).

7. The anti-aging porcelain insulator structure according to claim 5, characterized in that: An airbag sub-body (214) is arranged inside the built-in slide groove (211), and three airbag tubes (215) are arranged on one side of the airbag sub-body (214), and the airbag tubes (215) are connected to the airbag main body (27).

8. The anti-aging porcelain insulator structure according to claim 7, characterized in that: The side surface of the contour ring (26) is provided with three connection hole grooves (261), and the airbag tube (215) matches the connection hole grooves (261).

9. The anti-aging porcelain insulator structure according to claim 1, characterized in that: The upper end opening of the airbag body (27) is provided with a tube groove chamber (271), and the bottom end of the tube groove chamber (271) is provided with a ball groove chamber (272).

10. The anti-aging porcelain insulator structure according to claim 3, characterized in that: The opening diameter of the cylindrical groove (29) is smaller than the outer diameter of the connecting ball (4), and the outer diameter of the connecting ball (4) is smaller than the inner diameter of the contour ring (26).

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