CN204332550U - Polyethylene Umbrella Insulators - Google Patents

Abstract

The utility model relates to a kind of polyethylene umbrella-type insulator.Mainly solve that existing insulator dielectric effect is bad, mechanical strength is poor, the yielding problem of insulator umbrella.It is characterized in that: described main body (1) comprises inner core (4) and outer layer sleeve (5), described outer layer sleeve (5) is placed in the outside in inner core (4) stage casing, and described outer layer sleeve (5) external stability has 2 umbrella leaves (3); The right-hand member of described inner core (4) is internally connected with screw rod (2), the end face of left end has metallic channel (7), and the end face of metallic channel (7) both sides has screwed hole (6).This polyethylene umbrella-type insulator has that insulation effect is good, mechanical strength is good, the on-deformable feature of insulator umbrella.

Description

Polyethylene Umbrella Insulators

technical field

The utility model relates to the field of electricity, in particular to a polyethylene umbrella insulator.

Background technique

Insulators, commonly known as porcelain bottles, are insulators used to support wires. Insulators can ensure sufficient insulation for conductors, cross arms and towers. It should be able to withstand the load in the vertical direction of the wire and the tension in the horizontal direction during operation. It also withstands the sun, rain, climate change and corrosion of chemical substances. The quality of the insulator is very important to the safe operation of the line. Therefore, insulators must have both good electrical properties and sufficient mechanical strength. At present, my country's medium-voltage distribution network is basically dominated by 10kV. However, with the rapid economic development, the existing 10kV distribution system has small capacity and large losses. Compared with it, the 20kV distribution line has a large power supply capacity. , Electric energy loss can be reduced by 75%, in line with the national low-carbon energy-saving umbrella, 20kV power grid is imperative. Insulators are the main components of power distribution lines. The existing insulators are generally made of silica gel composite insulators, which have problems such as poor insulation effect, poor mechanical strength, and easy deformation of the insulator umbrella, and are not suitable for 20kV power grids.

Contents of the invention

In order to overcome the shortcomings of existing insulators such as poor insulation effect, poor mechanical strength, and easy deformation of the insulator umbrella, the utility model provides a polyethylene umbrella insulator. The polyethylene umbrella insulator has good insulation effect, good mechanical strength, The insulator umbrella is not easy to deform.

The technical solution of the utility model is: a polyethylene umbrella insulator, including a main body, the main body includes an inner core and an outer sleeve, the outer sleeve is placed outside the middle section of the inner core, and the Two umbrella leaves are fixed on the outside of the outer sleeve; the right end of the inner core is connected with a screw rod, the end surface of the left end is provided with a wire groove, and threaded holes are opened on the end faces of both sides of the wire groove.

The utility model has the following beneficial effects: due to the adoption of the above scheme, the main body is composed of an inner core and an outer sleeve, and the inner core is made of high-strength resin, which enhances the ability of the insulator to withstand voltage and mechanical load; the outer sleeve is made of It is made of polyethylene injection molding. At the same time, two umbrella leaves are fixed outside the outer sleeve to increase the creepage distance. The insulator has the advantages of good insulation effect, good mechanical strength, no deformation of the insulator umbrella, etc., can be applied to 20kv power distribution lines, and the insulator is easy to process and has low production cost.               

Description of drawings

Fig. 1 is a structural representation of the utility model.

Among the figure 1-main body, 2-screw rod, 3-umbrella leaf, 4-inner core, 5-outer sleeve, 6-threaded hole, 7-wire groove.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, a polyethylene umbrella insulator includes a main body 1, the main body 1 includes an inner core 4 and an outer sleeve 5, and the outer sleeve 5 is placed outside the middle section of the inner core 4 , fasten and fit on the inner core 4, and both ends of the inner core 4 are exposed to the outside. The inner core 4 is made of high-strength resin, which enhances the ability of the insulator to withstand voltage and mechanical load; the outer sleeve is made of polyethylene injection molding, and the outer sleeve 5 is fixed with two umbrella leaves 3 outside. In addition, the two umbrella leaves are respectively arranged at the left end and the middle part of the outer sleeve 5, and the umbrella leaf 3 is also injection-molded with polyethylene, which increases the creepage distance. Wherein the umbrella leaf 3 and the outer layer sleeve 5 can be made into one, which is convenient for processing and assembling. The right end of the inner core 4 is internally connected with a screw rod 2, the end face of the left end is provided with a wire groove 7, and the end faces of the wire groove 7 both sides are provided with threaded holes 6, the threaded holes 6 can be screwed to connect the gland, The wire in the wire groove 7 is compressed by the gland.

As mentioned above, the insulator has the advantages of good insulation effect, good mechanical strength, and no deformation of the insulator umbrella. It can be applied to 20kv power distribution lines, and the insulator is easy to process and the production cost is low.

Embodiment 1: The overall length of the insulator is 282 mm, the diameter of the two umbrella leaves 3 is 190 mm, and the distance between the two umbrella leaves 3 is 80 mm.

Claims (1)

1. a polyethylene umbrella-type insulator, comprise main body (1), it is characterized in that: described main body (1) comprises inner core (4) and outer layer sleeve (5), described outer layer sleeve (5) is placed in the outside in inner core (4) stage casing, and described outer layer sleeve (5) external stability has 2 umbrella leaves (3); The right-hand member of described inner core (4) is internally connected with screw rod (2), the end face of left end has metallic channel (7), and the end face of metallic channel (7) both sides has screwed hole (6).