CN202266070U - Double-return circuit electric iron tower - Google Patents

Abstract

The utility model provides a low-cost double-return circuit electric iron tower, which comprises a tower body and three layers of cross arms, wherein the three layers of cross arms comprise an earth wire cross arm, an upper conductor cross arm and a lower conductor cross arm in sequenced from top to bottom, and are symmetrically distributed on the same vertical planes of both sides of the tower body; two return conductors are respectively arranged at both sides of the tower body; the upper conductor cross arm is provided with I-shaped insulator strings; and the lower conductor cross arm is provided with V-shaped insulator strings. In the low-cost double-return circuit electric iron tower provided by the utility model, the V-shaped insulator strings and the I-shaped insulator strings are adopted in the manner of mixing on the same iron tower, thus, a corridor is narrower, whereas the V-shaped insulator strings are adopted by the lower conductor cross arm, and the I-shaped insulator strings are adopted by the upper conductor cross arm, therefore, the requirement on the interlayer spacing of poles and towers is low, the weight of the tower body is lighter, and the investment cost is reduced.

Description

A kind of double loop electricity iron tower

Technical field

The utility model relates to a kind of power equipment, especially a kind of double loop electricity iron tower.

Background technology

At present, the mostly light ice formation of electricity iron tower, double loop, middle ice formation conventional type and the compact iron tower of the use of China's transmission line of electricity.The insulator that uses for heavy ice area dual-loop electricity iron tower all is the V-type insulator string generally, and the whole width of corridor of V-type insulator string shaft tower is little, can reduce the felling of housing demolition and trees like this; But the V-type insulator string has restrictive function to the skew of lead; The lead cross-arm is than long, and the shaft tower interlamellar spacing is big, so iron tower Dan Ji is heavier; And insulator quantity is many, has increased cost of investment.

The utility model content

The purpose of the utility model provides the low double loop electricity iron tower of a kind of cost.

Realize a kind of double loop electricity iron tower of the utility model purpose; Comprise body of the tower and three layers of cross-arm; These three layers of cross-arms are followed successively by ground wire cross-arm, upper conductor cross-arm and lower wire cross-arm from top to bottom, and are symmetrically distributed on the same vertical plane of said body of the tower both sides, and two return wires are arranged in the both sides of body of the tower; The upper conductor cross-arm is provided with I type insulator string, and the lower wire cross-arm is provided with the V-type insulator string.

The beneficial effect of the utility model is following: a kind of double loop electricity iron tower of the utility model; On same iron tower, mix and adopt V-type insulator string and I type insulator string, the corridor is narrower, and the lower wire cross-arm adopts the V-type insulator string; The upper conductor cross-arm adopts I type insulator string; Therefore little to the requirement of shaft tower interlamellar spacing, so body of the tower weight is lighter, has reduced cost of investment.

Description of drawings

Fig. 1 is the structural representation of a kind of double loop of the utility model electricity iron tower.

The specific embodiment

The embodiment of the utility model is following.

As shown in Figure 1; A kind of double loop electricity iron tower of the utility model comprises body of the tower 1 and three layers of cross-arm, and these three layers of cross-arms are followed successively by ground wire cross-arm 2, upper conductor cross-arm 3 and lower wire cross-arm 4 from top to bottom; And be symmetrically distributed on the same vertical plane of said body of the tower 1 both sides; Two return wires are arranged in the both sides of body of the tower 1, and upper conductor cross-arm 3 is provided with I type insulator string 5, and lower wire cross-arm 4 is provided with V-type insulator string 6.

A kind of double loop electricity iron tower of the utility model; On same iron tower, mix and adopt V-type insulator string 6 and I type insulator string 5, the corridor is narrower, and lower wire cross-arm 4 adopts V-type insulator string 6; Upper conductor cross-arm 3 adopts I type insulator string 5; Therefore little to the requirement of shaft tower interlamellar spacing, so body of the tower 1 weight is lighter, has reduced cost of investment.

Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Design under the spiritual prerequisite not breaking away from the utility model; Various distortion and improvement that the common engineers and technicians in this area make the utility model technical scheme all should fall in the protection domain that claims of the utility model confirm.

Claims (1)

1. double loop electricity iron tower; Comprise body of the tower and three layers of cross-arm; It is characterized in that: these three layers of cross-arms are followed successively by ground wire cross-arm, upper conductor cross-arm and lower wire cross-arm from top to bottom, and are symmetrically distributed on the same vertical plane of said body of the tower both sides, and two return wires are arranged in the both sides of body of the tower; The upper conductor cross-arm is provided with I type insulator string, and the lower wire cross-arm is provided with the V-type insulator string.