Novel pillar mixed porcelain insulator

Abstract

The utility model relates to the technical field of insulators, in particular to a novel pillar mixed porcelain insulator, which comprises a porcelain body, and a plurality of porcelain umbrella skirts are formed on the outer wall of the porcelain body; the insulating protective sleeve is sleeved on the porcelain umbrella skirt and is matched with the porcelain umbrella skirt in shape; the porcelain head is fixedly connected with the end part of the porcelain body; the flange is sleeved on the porcelain head; and the bonding part is arranged between the flange and the porcelain head and is used for mutually fixing the porcelain head and the flange. According to the invention, a layer of silicone rubber insulation protection sleeve is formed on the porcelain umbrella skirt, so that the novel pillar mixed porcelain insulator not only retains the excellent mechanical performance of the original porcelain pillar insulator, but also has the excellent anti-pollution flashover performance of a composite pillar insulator.

Description

Technical Field

[0001] The present application relates to the technical field of insulators, and in particular to a novel post hybrid porcelain insulator. Background Art

[0002] Insulators, as specialized insulating components, are essential components of transmission lines and play a crucial role in overhead transmission lines. Their mechanical, electrical, and aging properties, as well as their operational status, have a crucial impact on the safe operation of power grids. In recent years, the scale and complexity of power grids have continued to expand. The construction of ultra-high voltage transmission lines, the upgrading of regional power grids, and active participation in overseas power grid construction have led to a continuous increase in the use of insulators in my country. With the continuous development of new technologies and materials, different types of insulator products have been developed and put into operation.

[0003] Currently, porcelain insulators are the most widely used of traditional insulators and have extensive operational experience. However, porcelain insulators exhibit poor pollution resistance over long periods of operation. Dirt adheres to the surface of porcelain insulators. In humid conditions, the soluble substances in this dirt gradually dissolve in water, forming a conductive film on the insulation surface. This significantly reduces insulation performance and leads to intense discharge under the action of electric fields. This phenomenon poses a significant threat to the safe and stable operation of power systems, potentially causing power outages and equipment damage. Utility Model Content

[0004] The purpose of this application is to provide a novel post hybrid porcelain insulator, which can reduce the occurrence of dirty flashover of porcelain insulators.

[0005] The present application provides a novel post hybrid porcelain insulator adopting the following technical solution:

[0006] A new type of post hybrid porcelain insulator, comprising:

[0007] A porcelain body, wherein the outer wall of the porcelain body is formed with a plurality of porcelain sheds;

[0008] An insulating protective sleeve is sleeved on the porcelain shed and adapted to the shape of the porcelain shed;

[0009] A porcelain head, fixedly connected to the end of the porcelain body;

[0010] A flange is sleeved on the porcelain head;

[0011] The bonding portion is arranged between the flange and the ceramic head and is used to fix the ceramic head and the flange to each other.

[0012] By adopting the above technical solution, an insulating protective sleeve is provided on the porcelain shed. The provision of the insulating protective sleeve improves the anti-pollution flashover performance of the insulator. Moreover, since the insulating protective sleeve is provided on the porcelain shed, the porcelain shed and the porcelain body are integrally formed. Firstly, due to the provision of the porcelain shed, the insulating protective sleeve is supported, so that the insulating protective sleeve is not easily damaged. Secondly, when the insulating protective sleeve is damaged due to factors such as bird pecking, the porcelain head, porcelain body and porcelain shed are integrally formed to form a complete porcelain insulation part. Therefore, the electrical performance still meets the requirements, thereby being able to continue to ensure the normal operation of the transmission line and reduce the occurrence of transmission line operation failures.

[0013] Optionally, the insulating protective cover is a silicone rubber insulating protective cover that is injection molded in one step using a high-temperature injection molding process.

[0014] By adopting the above technical solution, since the insulating protective cover is injection molded in one step using a high-temperature injection molding process, the integrity of the insulating protective cover is guaranteed, and the insulating protective cover can be completely covered on the porcelain shed, reducing the presence of splicing gaps in the insulating protective cover. In addition, silicone rubber has a high resistivity and dielectric strength, which can effectively prevent current leakage and ensure the safe operation of the power system.

[0015] Optionally, the bonding portion includes a porcelain sand layer, a thin glaze, an asphalt paint and a cement adhesive layer arranged in sequence.

[0016] By adopting the above technical scheme, the cement adhesive can provide sufficient bonding strength to ensure a firm connection between the insulator and the flange, withstand the mechanical stress in the power system, and the cement adhesive generally has good weather resistance, can resist the influence of environmental factors such as ultraviolet rays, temperature changes and humidity, and maintain long-term performance stability; the rough surface of the porcelain sand layer can increase the friction between the cement adhesive and the porcelain head, and the porcelain sand layer can provide a rough surface to enable the cement adhesive to better adhere to the porcelain head, prevent bonding failure caused by environmental changes, and thereby improve the stability and firmness of the bond; the thin glaze can protect the surface of the porcelain head and prevent it from being eroded by the external environment (such as acid rain, ultraviolet rays, etc.), and the thin glaze can improve the surface insulation performance of the porcelain head, reduce surface leakage current, and improve the overall insulation effect; asphalt paint can effectively prevent moisture from penetrating into the porcelain insulator and adhesive, keep it dry, extend its service life, and the asphalt paint has a certain heat insulation effect, which can reduce thermal expansion and contraction caused by temperature changes, thereby reducing stress.

[0017] Optionally, a sealing layer is further included, which is fixedly connected to the porcelain head and the flange respectively, and the sealing layer is arranged around the flange to seal the part of the bonding portion exposed to the air.

[0018] By adopting the above technical solution and providing a sealing layer, the contact between the bonding portion and the air is reduced, thereby reducing the occurrence of adhesion failure.

[0019] Optionally, the sealing layer is made of room temperature vulcanized silicone rubber material.

[0020] By adopting the above technical solutions, vulcanized silicone rubber can resist the effects of ultraviolet rays, ozone and extreme temperature changes, and is suitable for long-term exposure to outdoor environments. Vulcanized silicone rubber is an excellent waterproof material that can form an effective waterproof layer to prevent moisture from invading the adhesive, thereby avoiding corrosion and performance degradation caused by moisture. Vulcanized silicone rubber also has good elasticity and flexibility, which can adapt to slight movements and deformations of the substrate and reduce the formation of cracks and gaps.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. An insulating protective sleeve is provided on the porcelain shed. The provision of the insulating protective sleeve improves the anti-pollution flashover performance of the insulator. In addition, since the insulating protective sleeve is provided on the porcelain shed, the porcelain shed and the porcelain body are integrally formed. Firstly, the provision of the porcelain shed supports the insulating protective sleeve, making it less likely to be damaged. Secondly, when the insulating protective sleeve is damaged by factors such as bird pecking, the electrical performance of the insulating sleeve can still meet the requirements because the porcelain head, porcelain body and porcelain shed are integrally formed to form a complete porcelain insulation part. Therefore, the normal operation of the transmission line can continue to be guaranteed, and the occurrence of transmission line operation failures can be reduced.

[0023] 2. Since the insulating protective cover is molded in one step using a high-temperature injection molding process, the integrity of the insulating protective cover is guaranteed, and the insulating protective cover can be completely covered on the porcelain shed, reducing the presence of splicing gaps in the insulating protective cover. In addition, silicone rubber has a high resistivity and dielectric strength, which can effectively prevent current leakage and ensure the safe operation of the power system.

[0024] 3. By setting a sealing layer, the contact between the bonding part and the air is reduced, thereby reducing the occurrence of adhesion failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a new type of pillar hybrid porcelain insulator in an embodiment of the present application.

[0026] Figure 2 This is a schematic diagram of the partial cross-sectional structure of a new type of pillar hybrid porcelain insulator in an embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the exploded cross-sectional structure of the flange in Example 2 of the present application.

[0028] In the figure, 1. Porcelain head; 2. Porcelain body; 21. Porcelain umbrella skirt; 3. Insulating protective cover; 4. Flange; 5. Adhesive part; 6. Sealing layer; 7. Mounting seat; 71. Slide rod; 72. First spring; 8. Fixed iron sheet; 9. Base; 91. Blind hole; 92. Mounting hole; 93. Slide groove; 94. Slider; 95. Second spring. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0030] Example 1:

[0031] A new type of pillar hybrid porcelain insulator, refer to Figure 1 and Figure 2 , including a porcelain head 1, a porcelain body 2 and an insulating protective cover 3. The porcelain head 1 is fixedly connected to the end of the porcelain body 2. In this embodiment, two porcelain heads 1 are provided. The two porcelain heads 1 are respectively provided at both ends of the porcelain head 1 and are fixedly connected to the porcelain body 2. The porcelain head, porcelain body and porcelain umbrella skirt are integrally formed to form a complete porcelain insulator.

[0032] A plurality of porcelain sheds 21 are formed on the outer wall of the porcelain body 2. The sheds 21 are evenly spaced along the axis of the porcelain body 2 and are integrally formed with the porcelain body 2. The insulating protective cover 3 is fitted over the sheds 21 and conforms to their shape. Specifically, the outer wall of the insulating protective cover 3 is formed with silicone rubber sheds, which fit over the sheds 21 to completely cover them. In this embodiment, the insulating protective cover 3 is a silicone rubber insulating protective cover 3 that is molded in a single step using a high-temperature injection molding process. This single-step high-temperature injection molding process ensures the integrity of the insulating protective cover 3 and enables the hybrid porcelain post insulator to retain the excellent mechanical properties of the porcelain post insulator and the excellent anti-pollution flashover performance of the composite post insulator. Furthermore, the silicone rubber material has enhanced resistance to external mechanical effects.

[0033] The novel post hybrid porcelain insulator further includes a flange 4 and a bonding portion 5. Each porcelain head 1 is provided with a flange 4, and the bonding portion 5 is provided between the flange 4 and the porcelain head 1. The flange 4 is fixedly connected to the porcelain head 1 via the bonding portion 5. The provision of the flange 4 facilitates the installation of the insulator.

[0034] The bonding part 5 includes a porcelain sand layer, a thin glaze, an asphalt paint and a cement bonding layer. Before fixing the flange 4 on the porcelain head 1, a layer of porcelain sand is first wrapped on the porcelain head 1. The rough surface of the porcelain sand layer can increase the friction between the cement adhesive and the porcelain head 1, and the porcelain sand layer can provide a rough surface to make the cement adhesive adhere better to the porcelain head 1, preventing bonding failure caused by environmental changes, and thereby improving the stability and firmness of the bonding.

[0035] A thin layer of glaze is then wrapped on the porcelain sand layer. The thin glaze can protect the surface of the porcelain head 1 and prevent it from being eroded by the external environment (such as acid rain, ultraviolet rays, etc.). The thin glaze can also improve the surface insulation performance of the porcelain head 1, reduce surface leakage current, and improve the overall insulation effect.

[0036] Then wrap a layer of asphalt paint on the thin glaze. Asphalt paint can effectively prevent moisture from penetrating into the porcelain insulator and adhesive, keep it dry, and extend its service life. Asphalt paint also has a certain heat insulation effect, which can reduce thermal expansion and contraction caused by temperature changes, thereby reducing stress.

[0037] Finally, a cement adhesive layer is wrapped on the asphalt paint and the flange 4 is placed on the porcelain head 1. After the cement adhesive layer dries, the fixed connection between the flange 4 and the porcelain head 1 is completed.

[0038] Furthermore, the novel post hybrid porcelain insulator includes a sealing layer 6, which is disposed on the end surface of the flange 4 and fixedly connected to the flange 4 and the porcelain head 1. The sealing layer 6 surrounds the flange 4 and is used to seal the portion of the adhesive portion 5 exposed to the air, thereby reducing contact between the adhesive portion 5 and the air and thereby reducing the possibility of adhesion failure. In this embodiment, the adhesive portion 5 is made of room temperature vulcanized silicone rubber.

[0039] The novel post hybrid porcelain insulator in Example 1 of the present application is formed by a high-temperature injection molding process, with a layer of silicone rubber outer insulating protective sleeve 3 provided on the outer surface of the porcelain shed 21, so that the post hybrid porcelain insulator retains the excellent mechanical properties of the porcelain post insulator and has the excellent anti-pollution flashover performance of the composite post insulator, and a flange 4 is fixedly mounted on the porcelain head 1 to facilitate the installation of the insulator.

[0040] Example 2:

[0041] The structure of the second embodiment is substantially the same as that of the first embodiment, except that a cable fixing structure is added.

[0042] Reference Figure 3 The end of the flange 4 away from the porcelain head 1 is fixedly connected to the mounting base 7, and a fixing iron sheet 8 is provided on the mounting base 7. Two fixing iron sheets 8 are symmetrically provided. The two fixing iron sheets 8 clamp the cable in the middle and are fixed to each other by bolts, so that the cable and the insulator are fixed to each other.

[0043] Furthermore, a base 9 is provided between the fixed iron sheet 8 and the mounting seat 7. A plurality of slide bars 71 are fixedly connected to the mounting seat 7. The slide bars 71 are evenly arranged around the mounting seat 7. A plurality of blind holes 91 are provided on the base 9. The blind holes 91 correspond to the slide bars 71 one by one. The slide bars 71 can be inserted into and slide in the corresponding blind holes 91. A first spring 72 is fixedly connected to the middle of the mounting seat 7. A mounting hole 92 is provided on the bottom surface of the base 9. The end of the first spring 72 away from the mounting seat 7 is inserted into the mounting hole 92 and fixedly connected to the inner wall of the mounting hole 92. When there is an oblique wind force, it will drive the cable to have an upward movement. At this time, the first spring 72 will be stretched. When the first spring 72 recovers, it drives the cable to return to its original position, thereby providing a buffering effect on the cable.

[0044] Furthermore, a plurality of slide grooves 93 are provided on one side of the base 9 close to the fixed iron sheet 8, and each fixed iron sheet 8 corresponds to at least two slide grooves 93. A slider 94 is slidingly provided in each slide groove 93, and the slider 94 is fixedly connected to the corresponding fixed iron sheet 8. A second spring 95 is provided between the slider 94 and the inner wall of the slide groove 93, and one end of the second spring 95 is fixedly connected to the slider 94, and the other end of the second spring 95 is fixedly connected to the inner wall of the slide groove 93. When lateral wind force occurs, the cable slides laterally under the action of the wind force. At this time, the slider 94 slides in the slide groove 93, thereby compressing or stretching the second spring 95. When the second spring 95 is reset, the cable is driven to reset, thereby further buffering the cable.

[0045] In Example 2 of the present application: when an oblique wind force occurs, the cable will tend to move upward, thereby driving the base 9 to move upward, causing the first spring 72 to stretch. At the same time, the wind force will cause the cable to tend to move laterally, thereby driving the slider 94 to slide in the slide groove 93, causing the second spring 95 to compress or stretch. When the first spring 72 and the second spring 95 are reset, the cable is driven to reset. Through the setting of the first spring 72 and the second spring 95, double buffering of the cable is achieved, reducing damage to the cable caused by strong winds.

[0046] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A new type of pillar hybrid porcelain insulator, characterized in that: include: The porcelain body (2) has a plurality of porcelain umbrella skirts (21) formed on the outer wall; An insulating protective sleeve (3) is sleeved on the porcelain shed (21) and is adapted to the shape of the porcelain shed (21); A porcelain head (1) fixedly connected to the end of the porcelain body (2); A flange (4) is sleeved on the porcelain head (1); The bonding portion (5) is arranged between the flange (4) and the ceramic head (1) and is used to fix the ceramic head (1) and the flange (4) to each other.

2. A novel post hybrid porcelain insulator according to claim 1, characterized in that: The insulating protective sleeve (3) is a silicone rubber insulating protective sleeve that is molded in one step using a high-temperature injection molding process.

3. A novel post hybrid porcelain insulator according to claim 1 or 2, characterized in that: The bonding portion (5) comprises a porcelain sand layer, a thin glaze, an asphalt paint and a cement adhesive layer which are arranged in sequence.

4. A novel post hybrid porcelain insulator according to claim 1, characterized in that: It also includes a sealing layer (6), which is fixedly connected to the porcelain head (1) and the flange (4) respectively. The sealing layer (6) is arranged around the flange (4) to seal the part of the bonding part (5) exposed to the air.

5. A novel post hybrid porcelain insulator according to claim 4, characterized in that: The sealing layer (6) is made of room temperature vulcanized silicone rubber material.

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