Anti-freezing rain suspension type porcelain composite insulator

Abstract

The utility model discloses an anti-freezing rain suspension type porcelain composite insulator, which belongs to the technical field of insulators, comprises a porcelain core with a disc wing, a silicon rubber layer with an integrated structure is vulcanized on the porcelain core, and a silicon rubber umbrella skirt is connected onto the silicon rubber layer, and is characterized in that the silicon rubber umbrella skirt comprises a cover-shaped umbrella wing and a creepage umbrella wing which are sequentially distributed from top to bottom; the cover-shaped parasol wing is in smooth connection with the silicone rubber layer located on the top wall of the disc wing, the creepage parasol wing is connected to the silicone rubber layer located on the bottom wall of the disc wing, the cover-shaped parasol wing is provided with a first extension section exceeding the creepage parasol wing, and the length of the first extension section is 40-90 mm. According to the insulator, the roots of the cover-shaped umbrella wings can bear certain supporting force of the disc wings, the creepage umbrella wings below can be covered, the outer ends of the cover-shaped umbrella wings are flexible, attachments such as rainwater and ice can be shaken off under the action of wind power, accumulation of the attachments is reduced, the shaken-off attachments can be prevented from falling onto the creepage umbrella wings, and the creepage umbrella wings are prevented from being damaged. And an ice curtain is prevented from being formed between the parasol wings, so that the ice accumulation prevention effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of insulators, and in particular relates to a freezing rain-proof suspension type porcelain composite insulator. Background Art

[0002] Insulators are a special type of insulating control, usually installed between conductors of different potentials or between conductors and grounding components, to provide electrical insulation and mechanical fixation. Insulators are usually divided into suspension insulators and column insulators according to their installation methods. The sheds of suspension insulators can increase the creepage distance and enhance the electrical insulation capacity. They are widely used in high-voltage, extra-high-voltage and ultra-high-voltage transmission lines, providing reliable protection for the safe operation of transmission lines.

[0003] In recent years, under the influence of extreme weather, freezing rain has occurred in Guizhou Province and other southern regions of my country for several consecutive years, resulting in a large amount of ice covering the suspension insulators, and even forming an ice curtain between the upper and lower wings of the umbrella skirt. This not only reduces the insulator's ability to resist pollution flashover, but also becomes a gathering place for ice, increasing the burden on line supports such as towers, and even causing collapse, forcing the transmission line to be interrupted.

[0004] Therefore, how to reduce the above-mentioned freezing rain phenomenon is a technical problem that needs to be urgently solved in the power industry. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an anti-freezing rain suspended porcelain composite insulator, wherein the cover-shaped parachute wing has a certain supporting force and can protect the creeping parachute wing below; the creeping parachute wing has a certain softness and is easy to shake off ice.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: to design an anti-freezing rain suspension porcelain composite insulator, including a porcelain core, the porcelain core has a disc wing extending outward, a silicone rubber layer of an integral structure is vulcanized on the porcelain core, and a silicone rubber shed is connected to the silicone rubber layer, which is characterized in that: the silicone rubber shed includes a hood-type parachute wing and a creeping parachute wing distributed in sequence from top to bottom, the hood-type parachute wing is smoothly connected to the silicone rubber layer located on the top wall of the disc wing, the creeping parachute wing is connected to the silicone rubber layer on the bottom wall of the disc wing, and the hood-type parachute wing has a first extension section exceeding the outer end of the creeping parachute wing, and the length of the first extension section is 40 to 90 mm.

[0007] Preferably, the creeping electric parachute wing includes a first parachute wing and a second parachute wing distributed in sequence from top to bottom, the first parachute wing is smoothly connected to the silicone rubber layer on the bottom wall of the disc wing, the silicone rubber layer on the bottom wall of the disc wing has a convex ring extending downward, the second parachute wing is connected to the convex ring, and the second parachute wing has a second extended section that extends beyond the outer end of the first parachute wing.

[0008] Preferably, the length of the second extension section is 15 to 40 mm.

[0009] Preferably, the second parachute wing is inclined downward from inside to outside, and the inclination angle α is 25 to 35°.

[0010] Preferably, the outer end of the disc wing has a support arm, and the support arm is supported on the cover-type parachute wing.

[0011] Preferably, the cover-type parachute wing is inclined downward from the inside to the outside, and the inclination angle β is 10 to 20°.

[0012] Preferably, the ceramic core has an upwardly convex head, a socket is provided on the bottom wall of the head, a steel foot is installed in the socket, a buffer pad is also provided in the socket, and the buffer pad is located between the steel foot and the ceramic core.

[0013] Preferably, the buffer pad is a wooden block pad.

[0014] Preferably, a steel cap is installed on the head, and a boss is provided on the outer wall of the steel cap. The upper end of the silicone rubber layer is covered on the boss, and the lower end is connected to the steel foot.

[0015] Preferably, the thickness of the silicone rubber layer is 3 to 7 mm.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. Since the cover-type parachute wing is smoothly connected to the silicone rubber layer on the top wall of the disc wing, the root of the cover-type parachute wing can receive a certain support force from the disc wing, and can cover the creeping parachute wing below. On the one hand, it prevents rain and other objects from falling directly on the creeping parachute wing, thereby protecting the creeping parachute wing. On the other hand, the outer end is flexible and can shake off rain, ice and other attachments under the action of wind, reduce the accumulation of attachments, and prevent the shaken attachments from falling onto the creeping parachute wing, thereby preventing the formation of an ice curtain between the parachute wings.

[0018] 2. Since the creeping electric paraglider is directly connected to the silicone rubber layer on the bottom wall of the disc wing, it has a certain degree of softness and can promptly shake off the ice caused by supercooled water droplets in the air under the action of wind, thereby playing a role in preventing ice accumulation together with the cover-type paraglider.

[0019] 3. Since the first wing and the second wing are arranged in sequence from top to bottom in the creepage wing, the creepage distance of the entire insulator can be increased and the safety performance can be enhanced; and the distribution structure of the first wing and the second wing not only makes the flexibility of the second wing better than the first wing, but also makes it easier for the second wing with a larger outer diameter to shake off ice under the action of wind; it also makes the wings in the entire umbrella skirt distributed in alternating sizes, which can effectively increase the spacing in the vertical direction and further prevent the formation of ice curtains between adjacent wings.

[0020] 4. Since the outer end of the disc wing has a support arm, the support arm is supported on the hood-type parachute wing, which can further increase the root support force of the hood-type parachute wing, while effectively increasing the effective protection range of the hood-type parachute wing and reducing the deformation space of the hood-type parachute wing.

[0021] 5. Since the porcelain core has an upward convex head, a socket is opened on the bottom wall of the head, and a steel foot is installed in the socket. A buffer pad is also provided in the socket. The buffer pad is located between the steel foot and the porcelain core, which can buffer the stress caused by the assembly or the different degrees of thermal expansion and contraction of the components, thereby avoiding damage to the porcelain core.

[0022] 6. Since a steel cap is installed on the head, there is a boss on the outer wall of the steel cap. The upper end of the silicone rubber layer is covered on the boss and the lower end is connected to the steel foot, so that the silicone rubber layer forms a clamp fastening effect at the boss, which enhances the bonding strength between the silicone rubber layer and the insulator, and is conducive to effectively extending the overall service life.

[0023] 7. The utility model is ingeniously conceived. The flexibility of each wing is adjusted by reasonably arranging the connection position of each wing, so that the cover-shaped wing located above can have a certain supporting force to protect the wing below, and also have a certain flexibility to reduce ice accumulation and improve the ability to resist ice flash, which is convenient for promotion and application in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 yes Figure 1 A magnified view of part I in the middle;

[0026] Figure 3 It is a schematic diagram of the use state of the utility model.

[0027] Markings in the figure: 1. steel cap; 2. cover-type parachute wing; 3. first parachute wing; 4. second parachute wing; 5. steel foot; 6. porcelain core; 61. head; 62. disc wing; 63. support arm; 7. silicone rubber layer; 8. convex ring; 9. wooden block pad; 10. cement adhesive; 11. boss; 12. first extension section; 13. second extension section. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] When the utility model is in use, the end away from the ground is defined as the top end or the upper end, and the other end close to the ground is defined as the bottom end or the lower end; the side close to the axis of the steel foot 5 is defined as the inner side, and the other side away from the axis of the steel foot 5 is defined as the outer side.

[0030] like Figure 1As shown, the ceramic core 6 of the utility model has a disc wing 62 extending outward, and a silicone rubber layer 7 of an integral structure is vulcanized on the ceramic core 6. The thickness of the silicone rubber layer 7 is 3 to 7 mm, and can be specifically 3 mm, 4 mm, 5 mm, 6 mm or 7 mm. A silicone rubber shed is connected to the silicone rubber layer 7, and a cover-type parachute wing 2 and a creeping electric parachute wing are arranged in the silicone rubber shed in sequence from top to bottom. Among them, the cover-type parachute wing 2 is smoothly connected to the silicone rubber layer 7 located on the top wall of the disc wing 62, so that the cover-type parachute wing 2 can receive the support force of the disc wing 62 and the surface tension of the silicone rubber layer 7, and is not easy to bend downward, thereby providing a wide range of protection for the creeping electric parachute skirt below. The creeping parachute is provided with a first parachute wing 3 and a second parachute wing 4 which are sequentially distributed from top to bottom. The first parachute wing 3 is smoothly connected to the silicone rubber layer 7 on the bottom wall of the disc wing 62. The silicone rubber layer 7 on the bottom wall of the disc wing 62 has a convex ring 8 extending downward. The second parachute wing 4 is connected to the convex ring 8. The second parachute wing 4 is inclined downward from the inside to the outside, and the inclination angle α is 25 to 35°, specifically 25°, 28°, 30°, 32° or 35°. The second parachute wing 4 has a second extension section 13 which exceeds the outer end of the first parachute wing 3. The length of the second extension section 13 is 15 to 40 mm, specifically 15 mm, 20 mm, 25 mm, 30 mm, 35 mm or 40 mm. The cover-type parachute wing 2 has a first extension section 12 that extends beyond the outer end of the second parachute wing 4. The length of the first extension section 12 is 40 to 90 mm, specifically 40 mm, 50 mm, 60 mm, 70 mm, 80 mm or 90 mm, so that the outer end of the cover-type parachute wing 2 extends beyond the creeping parachute wing setting.

[0031] In order to enhance the root support force of the cover-type parachute 2, the utility model further provides an outwardly protruding support arm 63 at the outer end of the disc wing 62, and the support arm 63 is supported on the cover-type parachute 2, so that a notch is formed at the lower part of the support arm 63, which can increase the flexibility of the first parachute 3 and increase a certain creepage distance by utilizing the notch structure. The cover-type parachute 2 is also designed to be inclined downward from the inside to the outside, and the inclination angle β is 10 to 20°, specifically 10°, 12°, 15°, 18° or 20°.

[0032] In order to buffer the stress on the ceramic core 6, Figure 2 As shown, the utility model further provides a convex head 61 on the porcelain core 6, and a socket is provided on the bottom wall of the head 61. A steel foot 5 is mounted in the socket through a cement adhesive 10. A wooden pad 9 is also provided in the socket, and the wooden pad 9 is located between the steel foot 5 and the porcelain core 6. A steel cap 1 is installed on the head 61, and a boss 11 is provided on the outer wall of the steel cap 1. The upper end of the silicone rubber layer 7 is covered on the boss 11, and the lower end is connected to the steel foot 5, so that the boss 11 plays the role of a tight hoop, which enhances the tightness of the connection between the silicone rubber layer 7 and the insulator, and is conducive to increasing the bonding strength between the silicone rubber layer 7 and the insulator.

[0033] When using, Figure 3 As shown, the steel foot 5 of the upper insulator is inserted into the steel cap 1 of the lower insulator, and the insulators are connected in sequence to form an insulator string. The cover-type parafoil 2 is located at the top and acts as a protective umbrella. Since the retraction distance of the creeping parafoil is large, the attachments shaken off the cover-type parafoil 2 cannot fall onto the creeping parafoil, and different parafoils of the same insulator cannot be connected to each other to form an ice curtain.

[0034] In addition to using the wooden pad 9 as a buffer pad, a rubber pad with a certain elasticity or an elastic pad of other materials can also be used. It has a certain elastic deformation space and can buffer the stress by elastic deformation.

[0035] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A freezing rain-proof suspension porcelain composite insulator, comprising a porcelain core, the porcelain core having disc wings extending outward, a silicone rubber layer of an integral structure vulcanized on the porcelain core, and a silicone rubber shed connected to the silicone rubber layer, characterized in that: The silicone rubber umbrella skirt includes a hood-type parachute wing and a creeping electric parachute wing which are distributed in sequence from top to bottom. The hood-type parachute wing is smoothly connected to the silicone rubber layer on the top wall of the disc wing, and the creeping electric parachute wing is connected to the silicone rubber layer on the bottom wall of the disc wing. The hood-type parachute wing has a first extension section that exceeds the outer end of the creeping electric parachute wing, and the length of the first extension section is 40 to 90 mm.

2. The anti-freezing rain suspension porcelain composite insulator according to claim 1, characterized in that: The creeping parachute wing includes a first parachute wing and a second parachute wing distributed in sequence from top to bottom, the first parachute wing is smoothly connected to the silicone rubber layer on the bottom wall of the disc wing, the silicone rubber layer on the bottom wall of the disc wing has a convex ring extending downward, the second parachute wing is connected to the convex ring, and the second parachute wing has a second extended section that exceeds the outer end of the first parachute wing.

3. The anti-freezing rain suspension porcelain composite insulator according to claim 2 is characterized in that: The length of the second extension section is 15 to 40 mm.

4. The anti-freezing rain suspension porcelain composite insulator according to claim 3 is characterized in that: The second parachute wing is inclined downward from inside to outside, and the inclination angle α is 25-35°.

5. The anti-freezing rain suspension porcelain composite insulator according to any one of claims 1 to 4, characterized in that: The outer end of the disc wing is provided with a supporting arm, and the supporting arm is supported on the cover-type parachute wing.

6. The anti-freezing rain suspension porcelain composite insulator according to claim 5, characterized in that: The cover-type parachute wing is inclined downward from the inside to the outside, and the inclination angle β is 10 to 20 degrees.

7. The anti-freezing rain suspension porcelain composite insulator according to any one of claims 1 to 4, characterized in that: The porcelain core has an upwardly convex head, a plug hole is arranged on the bottom wall of the head, a steel foot is arranged in the plug hole, a buffer pad is also arranged in the plug hole, and the buffer pad is located between the steel foot and the porcelain core.

8. The anti-freezing rain suspension porcelain composite insulator according to claim 7, characterized in that: The buffer pad is a wooden block pad.

9. The anti-freezing rain suspension porcelain composite insulator according to claim 7, characterized in that: A steel cap is installed on the head, and a boss is provided on the outer wall of the steel cap. The upper end of the silicone rubber layer is covered on the boss, and the lower end is connected to the steel foot.

10. The anti-freezing rain suspension porcelain composite insulator according to claim 9, characterized in that: The thickness of the silicone rubber layer is 3-7 mm.

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