Novel line column type composite insulator
By using a high-voltage terminal and shed integrated injection-molded structure made of polymer materials, the problems of short dry arc distance, insufficient creepage distance and poor anti-pollution flashover performance of line post composite insulators have been solved, achieving improved electrical performance and reduced costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-03-27
AI Technical Summary
Existing line post-type composite insulators suffer from insufficient dry arc distance, short creepage distance, poor anti-pollution flashover performance, and short service life, resulting in high costs.
The high-voltage terminals made of polymer materials and the umbrella skirt made of integral injection molding process are combined with the film and the core and integrally molded by injection molding machine to form a fully insulated structure, which increases the creepage distance and improves the anti-pollution flashover capability.
It effectively improves the electrical performance and anti-flashover performance of insulators, extends their service life, and reduces production costs.
Smart Images
Figure CN224052934U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power transmission and distribution equipment technical field especially relates to a novel line post composite insulator. BACKGROUND
[0002] Composite insulator has been developed for thirty years from research and development to use, as a new generation line insulator with excellent performance, the use amount in our country power grid is increasing day by day, and it brings great benefit to the safe operation of power system. As a new field insulator with excellent full insulation performance, it occupies a very big place in the power grid of our country and even the world, and brings great benefit and convenience in use to the safe operation of power system in the world.
[0003] At the same time, with the rapid development of global economy, the power demand of power industry increases sharply, and the electrical safety and reliability in power transmission line are particularly important. In the power transmission line, the line post composite insulator is a very important part in power transmission, especially the power transmission and distribution network line scale is large, and the distribution is wide, so the mechanical and electrical performance of the line post composite insulator plays an important role in the line transmission process.
[0004] With the continuous development of technology of various manufacturers, the prices of products of various companies are also consistent, and how to make the product occupy a place in the insulator market has become a prominent problem for the manufacturers to develop insulators at the present stage.
[0005] The conventional line post composite insulator generally adopts metal material on the side of the high-voltage end of the connecting line, so that the dry arc distance of the insulator product has certain deficiency, the insulation distance and the creepage distance are short, and the anti-pollution flashover performance is poor, which is not conducive to the use of the insulator, and the service life of the existing insulator is relatively short, so that the cost of the insulator is high, which is not conducive to the use of the insulator.
[0006] Therefore, it is urgent to design a new type of line post composite insulator product to occupy a place in the composite insulator industry. INVENTION CONTENTS
[0007] The utility model discloses a kind of new line post composite insulators to solve the shortcomings in prior art, such as: the conventional line post composite insulator, connecting line high-voltage end side generally adopts metal material, so that the dry arc distance of the insulator product has certain deficiency, its insulation distance and the creepage distance are short, and the anti-pollution flashover performance is poor, which is not conducive to the use of the insulator, and the service life of the existing insulator is relatively short, so that the cost of the insulator is high, which is not conducive to the use of the insulator.
[0008] To achieve the above object, the utility model adopts the following technical scheme:
[0009] A new line post composite insulator, comprising:
[0010] The fixed core is provided with a high-voltage end at the top end, a glue film is arranged at the connection between the high-voltage end and the fixed umbrella cover, the high-voltage end and the fixed core are fixedly bonded through the glue film, a metal accessory is crimped and connected to the bottom end of the fixed core, a threaded interface is formed at the bottom end of the metal accessory, a screw assembly is threadedly connected to the metal accessory through the threaded interface, the fixed umbrella cover is crimped and connected to the outer side of the fixed core, and the fixed umbrella cover is integrally wrapped around the high-voltage end at the upper end and the part of the fixed core exposed outside.
[0011] Preferably, the high-voltage end is made of a high-molecular material, and the high-voltage end is made through an integral injection molding process.
[0012] Preferably, the fixed umbrella cover and the high-voltage end are integrally formed through an integral injection molding process of an injection machine.
[0013] Compared with the prior art, the utility model has the advantages that the material of the accessory at the end of the fitting and the forming technology of the umbrella skirt are improved, the core is injection molded together with the glue film through an injection molding process, the lower end accessory is crimped, and finally the umbrella skirt is injection molded through an integral injection molding process of an injection machine, so that the electrical performance of the product can be effectively improved, the creepage distance of the product is reasonably and effectively increased, the anti-pollution flashover capability of the insulator itself is greatly improved, the normal service life of the insulator can be effectively ensured, the production efficiency of the product is improved, and the production cost of the line post composite insulator is reduced.
[0014] 1) improve the electrical performance of the line post composite insulator
[0015] The accessory at the top end of the product is made of a high-molecular material PA66, and the accessory at the top end is wrapped around the umbrella skirt in a whole structure, and the high-voltage end is fully insulated, so that the dry arc distance of the line post insulator product of the utility model is at least increased by about 13% than that of the conventional product with the same structure, and the electrical safety performance of the product is greatly improved.
[0016] 2) increase the anti-pollution flashover performance of the product
[0017] The top end and the umbrella skirt are integrally injection molded in a wrapped structure, the high-molecular material at the high-voltage end is completely wrapped by the silicone rubber umbrella skirt, and the high-molecular material is also a fully insulated material, so that the creepage distance of the product is effectively increased, the anti-pollution flashover performance of the product is improved, and the service life of the product is also increased.
[0018] 3), reduce the production cost of line post composite insulator
[0019] The cost of the end accessory hardware of the original hardware material is about 30 yuan per piece, and the cost of the high polymer material used in the product of the utility model is reduced to about 8 yuan per piece, and the cost is reduced by about 22 yuan from the raw material cost. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 A structure diagram of a novel line post composite insulator is provided for the utility model.
[0021] In the figure: 1 high-voltage end, 2 fixed umbrella sleeve, 3 fixed core, 4 metal accessory, 5 screw assembly, 6 glue film. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0023] Referring to Figure 1 A novel line post composite insulator comprises:
[0024] The fixed core 3 is provided with a high-voltage end 1 at the top end, a glue film 6 is arranged at the connection of the high-voltage end 1 and the fixed umbrella sleeve 2, the high-voltage end 1 and the fixed core 3 are fixed and bonded by the glue film 6, the bottom end of the fixed core 3 is crimped and sleeved with a metal accessory 4, a threaded interface is formed at the bottom end of the metal accessory 4, the metal accessory 4 is threadedly connected with a screw assembly 5 through the threaded interface, the screw assembly 5 is assembled on the metal accessory 4 at the lower end to form a complete line post composite insulator, the fixed core 3 is sleeved with a fixed umbrella sleeve 2 at the outside, part of the metal accessory 4 is wrapped and arranged at the bottom end of the fixed umbrella sleeve 2, the high-voltage end 1 at the upper end is integrally wrapped and arranged by the fixed umbrella sleeve 2, and the part of the fixed core 3 exposed outside is completely wrapped and arranged by the fixed umbrella sleeve 2, so as to increase the insulation distance and the creepage distance, and improve the anti-pollution flashover performance of the product;
[0025] The high-pressure end 1 is made of a polymer material, and the high-pressure end 1 is made by an integral injection molding process, and the polymer material used by the high-pressure end is PA66; the wrapping connection between the fixed umbrella sleeve 2 and the high-pressure end 1 is integrally formed by an injection machine integral injection process, the high-pressure end 1 and the fixed umbrella sleeve 2 are integrally formed by a body wrapping integral injection molding structure, the fixed umbrella sleeve 2 made of silicone completely wraps the high-pressure end 1 and the high-pressure end 1 is made of a polymer material, and the polymer material is also a full insulation material, so the structure design can effectively increase the creepage distance of the product, improve the anti-pollution flashover performance of the product, and also increase the service life of the product.
[0026] Under the same structure height, the dry arc distance of the product is at least increased by about 13% than the conventional product of the same type, and the structure design greatly improves the electrical safety performance of the product.
[0027] In the utility model, the high-pressure end 1 and the fixed umbrella sleeve 2 are integrally formed by a body wrapping integral injection molding structure, the fixed umbrella sleeve 2 made of silicone completely wraps the high-pressure end 1 on the high-pressure end side, and the high-pressure end 1 is made of a polymer material, and the polymer material is also a full insulation material, so the structure design can effectively increase the creepage distance of the product, improve the anti-pollution flashover performance of the product, and also increase the service life of the product.
[0028] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, carries out equivalent replacement or change, should be covered in the protection scope of the utility model.
Claims
1. A new type of line post composite insulator, characterized in that, Include: The fixed core (3) is provided with high pressure end (1) on the top end, the connection of high pressure end (1) and fixed umbrella cover (2) is provided with adhesive film (6), high pressure end (1) and fixed core (3) are fixedly bonded through adhesive film (6), the bottom end of fixed core (3) is crimped with metal accessories (4), the bottom end of metal accessories (4) is provided with threaded interface, metal accessories (4) is connected with screw rod assembly (5) through threaded interface, the outside of fixed core (3) is sleeved with fixed umbrella cover (2), the bottom end of fixed umbrella cover (2) is wrapped with part of metal accessories (4), the high pressure end (1) of fixed umbrella cover (2) is integrally wrapped, and the part of fixed core (3) exposed outside is completely wrapped.
2. A new line post composite insulator according to claim 1, characterized in that, The high pressure end (1) is made of high molecular material, and the high pressure end (1) is made by integral injection molding process.
3. A new line post composite insulator according to claim 1, characterized in that, The fixed umbrella cover (2) and high pressure end (1) are integrally formed by integral injection molding process of injection machine.