Porcelain insulator with arc-resistant structure and manufacturing method thereof

Abstract

The invention discloses a porcelain insulator with an arc-resistant structure and a manufacturing method thereof, and relates to the field of porcelain insulators, and the porcelain insulator comprises a first umbrella skirt and a second umbrella skirt which are connected and assembled up and down, a protective sleeve sleeved in the second umbrella skirt, and a connecting pipe used for connecting the second umbrella skirt and the protective sleeve, the bottom of the protruding end is in threaded connection with the top end of the protective sleeve, when wind power is generated from the outside, the wind power can enter the protective sleeve through the air inlet, the bottom end of the protective sleeve is installed on the telegraph pole base, the bottom end of the protective sleeve is closed, the wind power blows upwards, the protective sleeve is conical, the radius of the bottom end is decreased, and the wind power passing path is narrowed. The wind pressure is increased, the wind exhausted from the connecting pipe is accelerated and urgent, and the blown wind is blocked by the inner wall of the bottom end of the first umbrella skirt and can be blown to the surface of the second umbrella skirt, so that the cleaning and heat dissipation effects are achieved.

Description

Technical Field

[0001] The present invention relates to the field of porcelain insulators, and in particular to a porcelain insulator with an arc-resistant structure and a manufacturing method thereof. Background Art

[0002] The surface of porcelain insulators is usually covered with porcelain glaze to improve its mechanical strength, waterproof infiltration, and increase surface smoothness. Among all types of insulators, porcelain insulators are the most commonly used.

[0003] However, existing post-type porcelain insulators present several practical challenges. Porcelain insulators typically have multiple sheds arranged vertically. Wind can easily cause the sheds to move on their surfaces, while their lower ends are blocked, making them difficult to clean and dissipate heat. Furthermore, over extended use, the underside of porcelain insulators is susceptible to erosion by dust, impurities, and moisture, leading to a decrease in insulation performance and potentially even arcing, compromising the safe operation of power systems.

[0004] Therefore, it is necessary to propose a porcelain insulator with an arc-resistant structure and a manufacturing method thereof to solve the above problems. Summary of the Invention

[0005] The present invention aims to provide a porcelain insulator with an arc-resistant structure and a method for manufacturing the same, in order to address practical problems with some post-type porcelain insulators. These insulators typically have multiple vertically spaced sheds. When wind blows, the sheds' surfaces are easily blown by the wind, while their bottoms are blocked, making them difficult to clean and dissipate heat. Furthermore, over long-term use, the bottom surface of porcelain insulators is susceptible to erosion by dust, impurities, and moisture, leading to a decrease in insulation performance and potentially even arcing, compromising the safe operation of power systems.

[0006] To achieve the above object, the present invention provides the following technical solution: a porcelain insulator with an arc-resistant structure, a first shed and a second shed assembled in an upper and lower connection;

[0007] A protective cover sleeved inside the second shed;

[0008] A connecting pipe for connecting the second shed and the protective cover;

[0009] Wherein, a protruding end is provided at the middle of the bottom end of the first umbrella skirt, and the bottom of the protruding end is threadedly connected to the top end of the protective cover;

[0010] An air inlet hole is provided on the outside of the protective cover, one end of the connecting pipe is threadedly connected to the protective cover and is in communication with each other, and the other end of the connecting pipe extends out of the second umbrella skirt.

[0011] Preferably, the protruding end is provided with a steel foot, and the bottom end of the inner part of the protective cover is hinged with a contact plate;

[0012] One end of the contact plate contacts the outer side of the steel foot, the end of the contact plate close to the steel foot is tilted downward, and the other end of the contact plate is connected to the first rotating shaft;

[0013] The first rotating shaft is rotatably connected to the inner wall of the protective sleeve.

[0014] Preferably, a first isolation pad and a second isolation pad are provided on the porcelain insulator;

[0015] Wherein, the first isolation pad and the second isolation pad are isolated between adjacent components on the porcelain insulator;

[0016] A top plate is provided at the top end of the first shed, and a feeding trough for glue material to enter is provided on the top plate. The glue material is used to bond and fix the first shed, the second shed and the protective cover.

[0017] Preferably, a plurality of discharge holes connected to the feed trough are opened on the outer side of the protruding end along the length direction;

[0018] The first isolation pad and the second isolation pad are provided with through holes corresponding to and communicating with the discharge holes.

[0019] Preferably, an upper wire groove is provided at the top of the top plate, a groove is provided inside the upper wire groove, a roller is rotatably connected to the groove via a second rotating shaft, and a second torsion spring is provided on the second rotating shaft.

[0020] Preferably, the roller is provided with a plurality of;

[0021] The rollers are distributed in multiple sections along the length direction of the groove.

[0022] Preferably, an annular bottom groove is provided at the bottom end of the first umbrella skirt, and an arc-resistant silicone rubber pad is provided at the top end of the annular bottom groove.

[0023] Preferably, the protective cover is configured to be conical, and the airflow is accelerated when passing through the conical protective cover.

[0024] Preferably, a pressure plate is provided above the top plate to limit the movement range of the electric wire.

[0025] The present invention also discloses a method for manufacturing a porcelain insulator with an arc-resistant structure, comprising the following steps:

[0026] Forming glue channels and air flow channels inside the porcelain insulator;

[0027] The glue binding channel is used to inject glue material into the glue binding channel in an injection manner;

[0028] The airflow channel is used to introduce external airflow, accelerate the airflow, clean the inside of the porcelain insulator and the shed inside the porcelain insulator, and dissipate heat.

[0029] The technical effects and advantages of the present invention are as follows:

[0030] 1. In the present invention, a connecting tube connecting the protective cover and the second shed is provided to improve the structural stability and strength between the porcelain insulator components. At the same time, the space between the protective cover, the second shed and the first shed can be connected to facilitate air circulation and achieve heat dissipation.

[0031] 2. When wind is generated outside, the wind is accelerated by the protective cover of the conical structure, which plays the role of cleaning, dissipating heat and drying the rubber materials.

[0032] 3. In the present invention, the first umbrella skirt, the second umbrella skirt and the protective cover can be disassembled and assembled with each other. When a certain part is damaged, it can be replaced. At the same time, the volume is smaller and it is convenient to transport.

[0033] 4. In the present invention, the connecting pipe can prevent the glue material from continuing to fall, play an interception role, avoid the glue material from being filled too much or too little when people are gluing, and regulate the filling amount of the glue material between the first shed and the second shed.

[0034] 5. At the same time, by adding connecting pipes, the contact area with the plastic material can be increased, thereby strengthening the connection strength between the plastic material and the second umbrella skirt and protective cover. After the rain, the wind can accelerate the drying speed of the lower surface of the plastic material and reduce moisture.

[0035] 6. In the present invention, when the electric wire is affected by wind and rotates, the roller reduces the friction generated by the rotation of the electric wire to avoid excessive friction and damage to the outer skin of the electric wire. In the absence of external force, the roller is affected by the second torsion spring and can automatically reset, driving the electric wire to reset and avoiding the deviation of the electric wire.

[0036] 7. The arc resistance of the porcelain insulator can be increased by setting a silicone rubber pad. At the same time, the bottom end of the annular bottom groove can be isolated to prevent water vapor or impurities from adhering to the annular bottom groove and causing pollution or erosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram from one perspective of a porcelain insulator with an arc-resistant structure according to the present invention.

[0038] Figure 2 This is a schematic structural diagram of the porcelain insulator with an arc-resistant structure from another perspective of the present invention.

[0039] Figure 3 It is a schematic diagram of the cross-sectional structure of the first umbrella skirt and the second umbrella skirt of the present invention.

[0040] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of point A in the middle.

[0041] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of point B in the middle.

[0042] Figure 6 For the present invention Figure 3 Enlarged schematic diagram at point C in the middle.

[0043] In the figure: 1. first umbrella skirt; 2. top plate; 3. pressure plate; 4. fixing bolt; 5. second umbrella skirt; 6. protective cover; 7. steel foot; 8. air inlet; 9. upper wire groove; 10. lower wire groove; 11. annular bottom groove; 12. silicone rubber pad; 13. protruding end; 14. glue loading; 15. first isolation pad; 16. discharge hole; 17. feed trough; 18. connecting pipe; 19. filter screen; 20. filter cotton; 21. contact plate; 22. first rotating shaft; 23. groove; 24. roller; 25. second isolation pad. DETAILED DESCRIPTION

[0044] The present invention provides Figures 1 to 6 The porcelain insulator with an arc-resistant structure shown in the figure includes a first shed 1 and a second shed 5. A protrusion 13 is provided at the middle of the bottom end of the first shed 1. The protrusion 13 is inserted into the second shed 5. A protective sleeve 6 is provided inside the second shed 5. The top of the protective sleeve 6 is threadedly connected to the bottom of the protrusion 13.

[0045] In actual operation of the present invention, when the first shed 1, the second shed 5 and the protective cover 6 are butt-jointed and installed up and down, the protruding end 13 of the first shed 1 extends into the interior of the second shed 5 and is threadedly connected to the top end of the protective cover 6, thereby realizing the connection between the first shed 1, the second shed 5 and the protective cover 6. Compared with the insulator formed in one piece, each component is smaller in size and each component can be disassembled separately, which is convenient for assembly and transportation.

[0046] A top plate 2 is provided at the top of the first umbrella skirt 1, an upper wire groove 9 is opened at the top of the top plate 2, a pressure plate 3 is provided at the top of the top plate 2, a lower wire groove 10 corresponding to the upper wire groove 9 is opened at the bottom of the pressure plate 3, a fixing bolt 4 is provided between the top plate 2 and the pressure plate 3, and wires can be placed in the upper wire groove 9 and the lower wire groove 10.

[0047] In the actual operation of the present invention, the wires can be placed between the upper wire trough 9 and the corresponding lower wire trough 10, and the fixing bolts 4 can fix the top plate 2 and the pressure plate 3, thereby pressing and fixing the wires between the upper wire trough 9 and the lower wire trough 10 to limit the movement range of the wires.

[0048] The bottom end of the protruding end 13 is connected to the steel foot 7, and the protective cover 6 is arranged on the outside of the steel foot 7. The protective cover 6 can protect the steel foot 7, reduce the erosion of the steel foot 7 by dust and impurities in the air, and improve the service life of the steel foot 7.

[0049] An air inlet 8 is provided on the outside of the protective cover 6, and a connecting pipe 18 is provided on the outside of the second umbrella skirt 5. One end of the connecting pipe 18 is threadedly connected to the outside of the protective cover 6, and one end of the connecting pipe 18 is communicated with the inside of the protective cover 6. The other end of the connecting pipe 18 extends out of the second umbrella skirt 5. A filter screen 19 is provided in the connecting pipe 18, and a filter cotton 20 is provided on the outside of the steel foot 7. The filter cotton 20 is arranged below the air inlet 8.

[0050] In the actual operation of the present invention, the protective cover 6 and the second umbrella skirt 5 can be connected through the connecting tube 18, thereby improving the structural stability and strength between the protective cover 6 and the second umbrella skirt 5, and preventing the protective cover 6 from shaking in the second umbrella skirt 5 due to its long length. At the same time, the space between the protective cover 6, the second umbrella skirt 5 and the first umbrella skirt 1 can be connected to facilitate air circulation and play a heat dissipation role.

[0051] Furthermore, when wind is generated from the outside, the wind will enter the inside of the protective cover 6 through the air inlet 8. Since the bottom end of the protective cover 6 is installed on the base of the electric pole, the bottom end of the protective cover 6 is closed, and the wind blows upward. Moreover, since the protective cover 6 is set to be conical, the radius of the bottom end becomes smaller, the path for the wind to pass through becomes narrower, and the wind pressure becomes greater, causing the wind discharged from the connecting pipe 18 to accelerate and become more urgent. The blown wind is blocked by the inner wall of the bottom end of the first umbrella skirt 1, and will blow to the surface of the second umbrella skirt 5, playing a role in cleaning and heat dissipation.

[0052] A first isolation pad 15 is provided between the first umbrella skirt 1 and the second umbrella skirt 5, a second isolation pad 25 is provided between the second umbrella skirt 5 and the protective cover 6, and glue 14 is filled between the first umbrella skirt 1 and the second umbrella skirt 5 and between the second umbrella skirt 5 and the protective cover 6.

[0053] A plurality of discharge holes 16 are provided on the outside of the protruding end 13 along the length direction, and the plurality of discharge holes 16 are all connected to the inside of the feed trough 17. Through holes corresponding to the discharge holes 16 are provided on the first isolation pad 15 and the second isolation pad 25. A feed trough 17 is provided in the middle of the upper wire groove 9, and the glue material 14 can be injected into the feed trough 17. The glue material 14 can be made of cement, epoxy resin or other insulating glue materials, which can be used selectively according to actual needs.

[0054] When the first umbrella skirt 1, the second umbrella skirt 5 and the protective cover 6 are docked and installed, the discharge hole 16 on the outside of the protruding end 13 will be connected with the through holes on the first isolation pad 15 and the second isolation pad 25, so as to facilitate the discharge of the glue material 14. When the glue material 14 is glued, the glue material 14 will seal the discharge hole 16, the feed trough 17 and the through hole, thereby playing the role of insulation and exhausting air.

[0055] In actual installation, by arranging the first isolation pad 15 and the second isolation pad 25, sufficient gaps can be left between the first umbrella skirt 1 and the second umbrella skirt 5, and between the second umbrella skirt 5 and the protective cover 6, so as to facilitate the entry of the glue material 14 and complete the glue binding work. At the same time, the arrangement of the first isolation pad 15 and the second isolation pad 25 can avoid damage caused by friction between the first umbrella skirt 1 and the second umbrella skirt 5 and the protective cover 6 during installation, thereby improving the protection and isolation insulation effect.

[0056] Furthermore, when the glue material 14 enters between the first umbrella skirt 1 and the second umbrella skirt 5, the protruding connecting tube 18 can prevent the glue material 14 from continuing to fall, thereby playing an intercepting role and making the glue material 14 located above the connecting tube 18. At the same time, the connecting tube 18 can also intercept the glue material 14 between the second umbrella skirt 5 and the protective cover 6, thereby preventing the glue material 14 from being filled too much or too little when people are gluing, and regulating the filling amount of the glue material 14 between the first umbrella skirt 1 and the second umbrella skirt 5.

[0057] It should be noted that during binding, a plug can be installed at the end of the connecting tube 18 away from the protective cover 6 to prevent the binding material 14 from entering the inside of the connecting tube 18. When the binding is completed, the plug can be removed.

[0058] At the same time, by adding the connecting tube 18 , the contact area with the glue filling 14 can be increased, thereby strengthening the connection strength between the glue filling 14 and the second shed 5 and the protective cover 6 .

[0059] After the rain, wind is discharged from the connecting pipe 18, and the wind is discharged in two parts. One part can blow the glue material 14 upward, thereby accelerating the drying speed of the lower surface of the glue material 14 and reducing moisture.

[0060] It should be noted that when the porcelain insulator is being repaired, an air filling mechanism, such as an air pump, can be connected to one end of the air inlet 8 to dissipate heat and clean the inside of the porcelain insulator and the outside of the second shed 5.

[0061] A resistance plate 21 is hinged at the bottom end of the inner part of the protective cover 6, and one end of the resistance plate 21 is in contact with the outer side of the steel foot 7. The resistance plate 21 is arranged below the filter cotton 20, and the other end of the resistance plate 21 is connected to a first rotating shaft 22. The first rotating shaft 22 is rotatably connected to the inner wall of the protective cover 6. A first torsion spring is provided on the first rotating shaft 22. The end of the resistance plate 21 close to the steel foot 7 is tilted downward, and the filter cotton 20 can absorb moisture entering the wind and block dust.

[0062] In the actual operation of the present invention, the contact plate 21 is rotatably connected to the inner wall of the protective sleeve 6 through the first rotating shaft 22, and since the first rotating shaft 22 is provided with a first torsion spring, the contact plate 21 can only rotate downward. When the steel foot 7 is extended into the interior of the protective sleeve 6, the outer side of the contact plate 21 and the outer side of the steel foot 7 rub against each other, thereby rotating downward to facilitate the passage of the steel foot 7. When the steel foot 7 stops moving, the contact plate 21 is acted upon by the first torsion spring and automatically contacts the outer side of the steel foot 7, playing a fixing role and improving the structural strength. At the same time, the contact plate 21 can prevent foreign matter from entering the outside and protect the bottom of the filter cotton 20.

[0063] The upper wire groove 9 has a groove 23 formed inside. A roller 24 is rotatably connected to the groove 23 via a second rotating shaft. A second torsion spring is provided on the second rotating shaft. Multiple rollers 24 are provided, and the rollers 24 are distributed around the center of the groove 23 and in multiple sections along the length of the groove 23.

[0064] In the actual operation of the present invention, when the electric wire is affected by wind and rotates, the electric wire will rub against the roller 24 in the rotating direction, and the roller 24 will rotate together with the electric wire, reducing the friction generated when the electric wire rotates, avoiding excessive friction and causing damage to the outer skin of the electric wire. When the wind stops, without the influence of external force, the roller 24 is affected by the second torsion spring and can automatically reset itself, and rub against the outside of the electric wire to reset the electric wire and avoid the wire from being offset.

[0065] A plurality of annular bottom grooves 11 are provided at the bottom end of the first shed 1, with a spacing left between two adjacent annular bottom grooves 11, and a silicone rubber pad 12 is fixedly connected to the top end of each of the annular bottom grooves 11. The provision of the silicone rubber pad 12 can enhance the arc resistance of the porcelain insulator, and at the same time, can isolate the bottom end of the annular bottom groove 11 to prevent water vapor or impurities from adhering to the annular bottom groove 11 and causing pollution or erosion.

[0066] There is a distance between the outer side of the protective cover 6 and the inside of the second umbrella skirt 5. There are multiple air inlet holes 8, and a waterproof and breathable membrane is provided inside each of the multiple air inlet holes 8 to allow wind to enter while reducing the entry of rainwater. Other filtering structures can also be used, such as a filter with a finer mesh.

[0067] The present invention also discloses a method for manufacturing a porcelain insulator with an arc-resistant structure, comprising the following steps:

[0068] S1, a first isolation pad 15 and a second isolation pad 25 are installed on the top of the second shed 5 and the protective cover 6 respectively, isolating the second shed 5 and the protective cover 6, and forming a glue channel with the discharge hole 16 of the protruding end 13;

[0069] S2. Use the connecting pipe 18 to connect the protective cover 6 with the second shed 5, so that the connecting pipe 18 is connected to the protective cover 6 and the second shed 5 to form an airflow channel;

[0070] S3. Insert the protruding end 13 into the second shed 5, and thread the protruding end 13 and the top of the protective cover 6 together. In addition, inject glue 14 into the feed trough 17. Connect the feed trough 17 via a pipe to inject the glue 14 into the porcelain insulator, and complete the glue connection of the first shed 1, the second shed 5, and the protective cover 6 at one time. Injecting through the pipe can prevent the glue 14 from overflowing onto the first shed 1 and the second shed 5, causing adhesion. In addition, the one-time injection method can improve production efficiency.

[0071] It should be noted that the integral porcelain insulator can be turned upside down and injected from bottom to top.

[0072] Specifically, a glue channel and an air flow channel are formed inside the porcelain insulator;

[0073] The glue channel is used to inject glue material 14 into the glue channel by injection; the airflow channel is used to introduce external airflow and accelerate the airflow to clean and dissipate heat inside the porcelain insulator and the shed inside the porcelain insulator.

Claims

1. A porcelain insulator with an arc-resistant structure, comprising: A first umbrella skirt (1) and a second umbrella skirt (5) connected and assembled up and down; A protective cover (6) sleeved inside the second shed (5); A connecting pipe (18) for connecting the second umbrella skirt (5) and the protective cover (6); Wherein, a protruding end (13) is provided at the middle of the bottom end of the first umbrella skirt (1), and the bottom of the protruding end (13) is threadedly connected to the top end of the protective sleeve (6); An air inlet (8) is provided on the outside of the protective sleeve (6), one end of the connecting pipe (18) is threadedly connected to the protective sleeve (6) and is in communication with each other, and the other end of the connecting pipe (18) extends out of the second umbrella skirt (5).

2. The porcelain insulator with an arc-resistant structure according to claim 1, characterized in that: The protruding end (13) is provided with a steel foot (7), and the inner bottom end of the protective cover (6) is hinged with a contact plate (21); One end of the contact plate (21) contacts the outer side of the steel foot (7), and one end of the contact plate (21) close to the steel foot (7) is tilted downward, and the other end of the contact plate (21) is connected to a first rotating shaft (22); The first rotating shaft (22) is rotatably connected to the inner wall of the protective sleeve (6).

3. The porcelain insulator with an arc-resistant structure according to claim 1, characterized in that: A first isolation pad (15) and a second isolation pad (25) are provided on the porcelain insulator; Wherein, the first isolation pad (15) and the second isolation pad (25) are isolated between adjacent components on the porcelain insulator; A top plate (2) is provided at the top end of the first umbrella skirt (1), and a feeding trough (17) for a glue material (14) to enter is provided on the top plate (2), and the glue material (14) is used to bond and fix the first umbrella skirt (1), the second umbrella skirt (5) and the protective cover (6).

4. The porcelain insulator with an arc-resistant structure according to claim 3, characterized in that: A plurality of discharge holes (16) communicating with the feed trough (17) are provided on the outer side of the protruding end (13) along the length direction; The first isolation pad (15) and the second isolation pad (25) are provided with through holes corresponding to and communicating with the discharge hole (16).

5. The porcelain insulator with an arc-resistant structure according to claim 1, characterized in that: An upper wire groove (9) is provided at the top of the top plate (2), a groove (23) is provided inside the upper wire groove (9), a roller (24) is rotatably connected to the groove (23) via a second rotating shaft, and a second torsion spring is provided on the second rotating shaft.

6. The porcelain insulator with an arc-resistant structure according to claim 5, characterized in that: The roller (24) is provided in plurality; The plurality of rollers (24) are distributed in multiple sections along the length direction of the groove (23).

7. The porcelain insulator with an arc-resistant structure according to claim 1, characterized in that: An annular bottom groove (11) is provided at the bottom end of the first umbrella skirt (1), and an arc-resistant silicone rubber pad (12) is provided at the top end of the annular bottom groove (11).

8. The porcelain insulator with an arc-resistant structure according to claim 1, characterized in that: The protective cover (6) is configured to be conical, and the airflow is accelerated when passing through the conical protective cover (6).

9. The porcelain insulator with an arc-resistant structure according to claim 3, characterized in that: A pressure plate (3) for limiting the moving range of the electric wire is provided above the top plate (2).

10. A method for manufacturing a porcelain insulator with an arc-resistant structure, characterized in that: The method for preparing the porcelain insulator with an arc-resistant structure according to any one of claims 1 to 9 further comprises the following steps: Forming glue channels and air flow channels inside the porcelain insulator; Among them, the glue channel is used to inject glue material into the glue channel by injection; among them, the airflow channel is used to introduce external airflow and accelerate the airflow to clean and dissipate heat inside the porcelain insulator and the umbrella skirt inside the porcelain insulator.

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