Embedded combined type high-voltage porcelain insulator

Abstract

The utility model discloses an embedded combined type high-voltage porcelain insulator, which comprises a porcelain bottle body and a binding post arranged at the upper part of the porcelain bottle body, a mounting base is arranged at the lower part of the porcelain bottle body, the mounting base is made of metal or nonmetal and is embedded on the porcelain bottle body, and the porcelain bottle body is made of an electric porcelain material. According to the utility model, the mounting base is made of metal or non-metal, and the porcelain bottle body is made of an electric porcelain material, so that the porcelain material with excellent insulating property, super-strong overvoltage resistance and natural hydrophobic property is creatively combined with a metal or non-metal structural member; the problems of poor reliability, high failure rate and the like in weather resistance, acid, alkali, salt mist, moist and dust environments of the conventional high-voltage insulators made of resin and DMC (Dimethyl Carbonate) materials are thoroughly solved.

Description

Technical Field

[0001] This utility model relates to insulators, specifically to an embedded composite high-voltage porcelain insulator. Background Technology

[0002] Post insulators are special components that connect conductive conductors while simultaneously insulating them from other metal structural parts. They are widely used in the power, motor, and electrical control industries. The upper part of the insulator has terminals for easy connection between conductors, the middle part is the insulation section, blocking the electrical path between conductors, and the lower part is the mounting base for fixing the insulator. Porcelain is the best insulating material, but its biggest drawback is its susceptibility to breakage under significant external pressure (requiring bolts to tighten when fixing the insulator). This problem has remained unresolved for many years, forcing the use of synthetic materials (resin-based and DMC) to manufacture insulators. However, synthetic insulators also have significant drawbacks, such as surface aging and cracking after a period of use, severe degradation of insulation performance, poor weather resistance and acid / alkali / salt spray resistance, and unstable reliability, causing considerable inconvenience to users and remaining unresolved. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an embedded composite high-voltage porcelain insulator, which has good reliability and low failure rate in terms of withstand voltage insulation performance, acid, alkali and salt spray resistance, heat and cold resistance, pull-out prevention, and torsional mechanics.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an embedded combined high-voltage porcelain insulator, including a porcelain insulator body, a terminal block installed on the upper part of the porcelain insulator body, and an installation base provided on the lower part of the porcelain insulator body. The installation base is made of metal or non-metal and embedded in the porcelain insulator body. The porcelain insulator body is made of electrical porcelain material.

[0005] The mounting base has protruding posts on the base plate and mounting holes on the edge of the base plate. The protruding posts are embedded in the ceramic bottle body to prevent the mounting base from rotating or being pulled out.

[0006] The mounting base is integrally formed with the ceramic bottle body by pressurizing and combining them with a highly weather-resistant structural adhesive.

[0007] The porcelain bottle body is cylindrical or square in shape.

[0008] This utility model, employing the aforementioned technical solution, designs an embedded composite high-voltage porcelain insulator. Due to the fragility of porcelain, synthetic materials such as resin are often used when installing high-voltage post insulators. However, this utility model creatively combines a metal or non-metal mounting base with an embedded inner sleeve featuring anti-rotation and pull-out protection. This is achieved by using a highly weather-resistant structural adhesive under pressure to integrate the porcelain insulator with the porcelain body. This innovatively combines the excellent insulation properties, superior overvoltage resistance, and natural hydrophobicity of porcelain with a metal or non-metal mounting base structure, completely solving the persistent problems of poor reliability and high failure rates in commonly used resin and DMC high-voltage insulators in weathering, acid / alkali / salt spray, and humid / dust environments. Field testing has demonstrated excellent reliability and a low failure rate in terms of voltage resistance, insulation performance, acid / alkali / salt spray resistance, heat and cold resistance, pull-out protection, and torsional mechanics. Its superior performance is evident in pull-out data exceeding 200 kg and torque exceeding 70 Nm. The structural adhesive used has passed all acid / alkali / salt spray and heat / cold resistance tests. Most importantly, the new insulator produced using this invention is 100% interchangeable with other insulators on the market, making it highly practical. Attached Figure Description

[0009] Figure 1 This is a schematic diagram showing the structure of Embodiment 1 of the present invention;

[0010] Figure 2 This is a schematic diagram showing the structure of the porcelain bottle body in Embodiment 1 of this utility model;

[0011] Figure 3 This is a schematic diagram of the structure of the mounting base in Embodiment 1 of this utility model;

[0012] Figure 4 This is a top view of the mounting base of Embodiment 1 of the present invention.

[0013] Figure 5 This is a schematic diagram showing the structure of Embodiment 2 of the present invention;

[0014] Figure 6 This is a top view structural diagram of Embodiment 2 of the present invention;

[0015] Figure 7 This is a schematic diagram showing the structure of the porcelain bottle body in Embodiment 2 of this utility model;

[0016] Figure 8 This is a top view of the porcelain bottle body according to Embodiment 2 of the present invention.

[0017] Figure 9 This is a schematic diagram of the structure of the mounting base in Embodiment 2 of this utility model;

[0018] Figure 10 This is a top view of the mounting base of Embodiment 2 of the present invention.

[0019] Figure 11 This indicates Embodiment 2 of the present invention. Figure 10 A schematic diagram of the left-side view structure. Detailed Implementation

[0020] The embedded combined high-voltage porcelain insulator of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Example 1 of the embedded combined high-voltage porcelain insulator of this utility model, see [link to example]. Figures 1 to 4 The system includes a ceramic bottle body 2, a terminal block 1 mounted on the upper part of the ceramic bottle body 2, and a mounting base 3 provided at the lower part of the ceramic bottle body 2. The mounting base 3 is made of metal or non-metal. Metal materials include, but are not limited to, carbon steel and stainless steel, while non-metal materials include, but are not limited to, engineering plastics, PMC, and resin. In this embodiment, the ceramic bottle body 2 has an overall cylindrical structure. The upper part of the ceramic bottle body 2 is provided with a terminal block mounting hole 4 for mounting the terminal block 1, and the lower part of the ceramic bottle body 2 is provided with a base mounting hole 5 for mounting the mounting base 3. The mounting base 3 includes a base plate 7, on which a protruding post 6 is provided, and mounting holes 8 are provided on the edge of the base plate 7. The protruding post 6 is embedded in the base mounting hole 5 of the ceramic bottle body 2, so that the mounting base 3 is embedded in the ceramic bottle body 2. The protruding post 6 prevents the mounting base 3 from rotating and pulling out. The mounting base 3 is formed into one piece with the ceramic bottle body 2 by pressure bonding with a high weather-resistant structural adhesive.

[0022] Example 2 of the embedded combined high-voltage porcelain insulator of this utility model, see [link to example]. Figures 5 to 11 In the structure of embodiment 1, the porcelain bottle body 2 is generally in the shape of a square column. The upper part of the porcelain bottle body 2 is provided with two terminal mounting holes 4 for mounting terminals 1. The mounting base 3 is also in the shape of a near square. The base mounting hole 5 and the protruding post 6 on the mounting base 3 are also in the shape of a near square column.

[0023] In the two embodiments of this utility model described above, the mounting base 3 is made of metal, which has the following advantages:

[0024] 1. Improved Mechanical Strength: A metal base can significantly improve the overall mechanical strength of the insulator. Metal materials typically have high tensile and compressive strength, enabling them to better withstand various loads, including installation stability, tensile and torsional resistance, thereby ensuring the stability and safety of the insulator;

[0025] 2. Prevent the possibility of breakage during the connection and installation of all-ceramic insulators with the overall structural components, and prevent damage caused by vibration during operation of the whole machine, so as to make the overall equipment run more stably and reliably;

[0026] 3. To prevent corrosion of the insulator by harmful gases and liquids such as acids, alkalis and salt sprays, a metal base made of stainless steel 304 or 316 can resist long-term erosion by corrosive gases and chemicals in the air, thus extending the service life of the insulator.

[0027] 4. Improved ease of installation and maintenance: Metal bases generally have better machinability and ease of installation, allowing for better connection with brackets and other electrical equipment, facilitating installation and maintenance;

[0028] 5. Adaptability to harsh environments: The metal base performs excellently in harsh environments, able to withstand extreme conditions such as high temperature, low temperature, and humidity, ensuring the stable operation of the insulator in these environments.

[0029] In the two embodiments of this utility model described above, the mounting base 3 is made of a non-metallic material, which has the following advantages:

[0030] 1. Electrical insulation performance: Non-metallic materials have good electrical insulation performance, which can increase the creepage distance between metallic conductors and ensure the normal operation and safety of electrical equipment;

[0031] 2. Mechanical strength: Non-metallic materials such as engineering plastics, SMC, and carbon fiber usually have high mechanical strength and can withstand greater external forces and vibrations. Although their mechanical properties are slightly inferior to those of metallic materials, they are sufficient to ensure the stability and durability of insulators in various working environments.

[0032] 3. Chemical corrosion resistance: Most non-metallic materials have good chemical corrosion resistance, can maintain stable performance in harsh environments, and extend their service life;

[0033] 4. Cost-effectiveness: Compared with metal materials, most non-metallic materials can be manufactured using mold casting technology, resulting in lower manufacturing costs and a certain cost advantage;

[0034] 5. Environmental adaptability: Non-metallic materials are not sensitive to changes in ambient temperature and can maintain good performance under different climatic conditions, making them suitable for use in various environments.

[0035] The ceramic bottle body 2 in the above two embodiments of this utility model is made of electrical porcelain material (electrical ceramics). Electrical porcelain material refers to a ceramic electrical insulating material with excellent insulation and mechanical strength. Proven through over a century of use, electrical porcelain material exhibits excellent chemical and thermal stability, virtually no aging or deterioration, and outstanding insulation, voltage resistance, and weather resistance. To date, it remains a top-tier insulating material and is recognized worldwide as a Class A insulating material. For outdoor power plants, refining plants, and coal mines operating under harsh conditions, ceramic electrical porcelain components have always been the only option for high-voltage, high-current, high-strength applications requiring extremely stringent weather resistance.

[0036] This invention creatively combines ceramic materials with excellent insulation properties, strong overvoltage resistance, and natural hydrophobicity with metal or non-metal mounting base structures. Compared with traditional insulators, it completely solves the persistent problems of poor reliability and high failure rate of commonly used resin and DMC high-voltage insulators in weathering, acid and alkali salt spray, and humid and dusty environments. After several years of field use by users with more than 10,000 units, its performance is superior. Taking the common 10 kV voltage as an example, the pull-out force is higher than 200 kg and the torque is greater than 70 Nm. The special structural adhesive used is superior to national standards and has passed all tests in acid and alkali salt spray, heat and cold resistance tests. It is also 100% interchangeable with the old-style insulators of the same model.

Claims

1. A built-in combined high voltage porcelain insulator comprising a porcelain body and a terminal post mounted on the upper part of the porcelain body, characterized in that The lower part of the ceramic bottle body is provided with an installation base. The installation base is made of metal or non-metal and is embedded in the ceramic bottle body. The ceramic bottle body is made of electrical porcelain material.

2. The embedded combined high voltage porcelain insulator according to claim 1, characterized in that The mounting base has protruding posts on the base plate and mounting holes on the edge of the base plate. The protruding posts are embedded in the ceramic bottle body to prevent the mounting base from rotating or being pulled out.

3. The embedded combined high voltage porcelain insulator according to claim 1, characterized in that The mounting base is integrally formed with the ceramic bottle body by pressurizing and combining them with a highly weather-resistant structural adhesive.

4. The embedded combined high voltage porcelain insulator of claim 1, wherein The porcelain bottle body is cylindrical or square in shape.

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