CN209637338U - 110 kV transmission line π-connected cable lead down steel pipe pole - Google Patents

Abstract

Cable is connect the utility model discloses 110 KV transmission line π of one kind and draws lower steel pipe pole, comprising: shaft, top conducting wire cross-arm, middle part conducting wire cross-arm, lower wire cross-arm, topping wire hanging point cross-arm, middle layer conducting wire hanging point cross-arm, lower layer's conducting wire hanging point cross-arm, upper layer end support cross-arm, middle layer end support cross-arm, lower layer's end support cross-arm, arrester, end and cable bearer.110 KV transmission line π connects cable and draws that lower steel tube rod structure is reasonable, reduces the use of cable terminal pole and steel pipe pole basis, saves occupied area, saved cost of investment.

Description

110 kV transmission line π-connected cable lead down steel pipe pole

technical field

The utility model relates to a steel pipe rod for π-connection of cables of transmission lines, in particular to a steel pipe rod for single-side π-connection of cable leads of double-circuit overhead power transmission lines on the same pole.

Background technique

With the continuous development of the power grid, the number of 110 kV overhead transmission lines in cities has increased year by year, and the contradiction with the city's appearance has become increasingly prominent. Indoor substations in urban areas usually use cables for incoming lines, and transmission lines π are connected to new substations. After the cable terminal poles are π-connected, they are introduced into nearby substations, resulting in an increase in the number of new π-connection line poles and towers, and problems such as difficulty in landing the poles and towers have become increasingly prominent.

Therefore, how to reduce the use of cable terminal poles in the process of connecting the transmission line π to the new substation, so as to reduce the floor space of the pole towers, has become an urgent problem to be solved.

Utility model content

In view of this, the purpose of this utility model is to provide a 110 kV power transmission line π-connected cable lead-down steel pipe pole to solve the problem of using two base cable terminal poles in conventional π-connected lines and increasing the floor space of the tower.

The technical solution provided by the utility model is: a 110 kV power transmission line π-connected cable led down steel pipe rod, including: rod body, upper wire cross arm, middle wire cross arm, lower wire cross arm, upper wire hanging point cross arm , the cross arm of the middle wire hanging point, the lower wire hanging point cross arm, the upper cable head bracket cross arm, the middle cable head bracket cross arm, the lower cable head bracket cross arm, the lightning arrester, the cable head and the cable bracket, among which, the upper wire cross arm , the middle wire crossarm and the lower wire crossarm are fixedly connected to the pole body in parallel from top to bottom, and the upper wire hanging point crossarm, the middle layer wire hanging point crossarm and the lower wire hanging point crossarm are respectively fixed and connected vertically to the upper wire crossarm , one end of the middle conductor cross-arm and the lower conductor cross-arm are set parallel to the extension direction of the conductor, and the two ends of the upper-layer wire hanging point cross-arm, the middle-layer wire hanging point cross-arm and the lower-layer wire hanging point cross-arm are horizontally arranged with wire hanging points , Arrester hanging points are vertically set, the arrester is suspended on the hanging point of the arrester, the upper cable head bracket crossarm and the middle layer cable head bracket crossarm are respectively fixedly connected to the middle conductor crossarm and the lower conductor crossarm and are hung with the middle conductor The point cross arm and the lower wire hanging point cross arm are set in parallel, the lower cable head bracket cross arm is fixed parallelly below the middle layer cable head bracket cross arm through the support cross arm, and the cable heads are respectively connected to the upper cable head bracket cross arm and the middle layer cable head The two ends of the cross arm of the bracket and the cross arm of the lower layer cable head bracket, the cable brackets are fixed on the pole body at intervals, and are used to fix the down-lead cables.

Preferably, the upper cable head support cross-arm and the middle cable head support cross-arm are respectively fixedly connected to the middle parts of the middle conductor cross-arm and the lower conductor cross-arm.

The 110 kV power transmission line π-connected cable led down steel pipe rod provided by the utility model integrates the wire hanging point cross arm and the cable head bracket cross arm into a steel pipe rod, which reduces the use of 1 base cable terminal rod, and at the same time corresponds to The use of a steel pipe pole foundation is reduced, the floor area is saved, and the investment cost is saved. By fixing the upper cable head support cross arm and the middle cable head support cross arm to the middle conductor cross arm and the lower conductor cross arm respectively, The middle wire cross arm and the lower wire cross arm are fully utilized, and there is no need to add additional support cross arms for supporting the upper cable head bracket cross arm and the middle cable head bracket cross arm, and at the same time, the cable head is better fixed.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

Fig. 1 is the schematic diagram of the DE structure of the 110 kV power transmission line π-connected cable led down steel pipe pole provided by the utility model;

FIG. 2 is an enlarged view of the upper part of FIG. 1 .

Detailed ways

The utility model will be further explained below in conjunction with specific embodiments, but the utility model is not limited thereto.

As shown in Figure 1 and Figure 2, the utility model provides a 110 kV power transmission line π-connected cable lead down steel pipe pole, including: pole body 1, upper conductor cross arm 2, middle conductor cross arm 3, lower conductor cross arm Bearing 4, upper layer wire hanging point cross arm 5, middle layer wire hanging point cross arm 6, lower layer wire hanging point cross arm 7, upper cable head bracket cross arm 8, middle cable head bracket cross arm 9, lower cable head bracket cross arm 10 , lightning arrester 11, cable head 12 and cable support 13, wherein, the upper wire cross arm 2, the middle wire cross arm 3 and the lower wire cross arm 4 are fixedly connected to the shaft 1 in parallel from top to bottom, and the upper wire hanging point cross arm 5. The middle wire hanging point cross arm 6 and the lower layer wire hanging point cross arm 7 are vertically fixedly connected to one end of the upper wire cross arm 2, the middle wire cross arm 3 and the lower wire cross arm 4 respectively, and are arranged parallel to the extending direction of the wire. The two ends of the upper layer wire hanging point cross arm 5, the middle layer wire hanging point cross arm 6 and the lower layer wire hanging point cross arm 7 are horizontally provided with wire hanging points and vertically provided with lightning arrester hanging points, and the lightning arrester 11 is suspended on the lightning arrester hanging points. , the upper cable head support cross arm 8 and the middle cable head support cross arm 9 are respectively fixedly connected to the middle conductor cross arm 3 and the lower conductor cross arm 4 and are parallel to the middle conductor hanging point cross arm 6 and the lower conductor hanging point cross arm 7 Setting, the lower cable head support cross arm 10 is fixed parallel to the middle layer cable head support cross arm 9 through the support cross arm 14, and the cable head 12 is respectively connected to the upper cable head support cross arm 8, the middle cable head support cross arm 9 and the lower layer The two ends of the cable head bracket cross arm 10 and the cable bracket 13 are fixed on the shaft 1 at intervals for fixing the down-lead cables, wherein, the serial number 15 in FIG. 2 represents the ground wire cross arm.

The 110 kV transmission line π-connected cable leads down the steel pipe pole in the following way: the two ends of the three-layer wire hanging point crossarm are respectively connected to the three-phase wires of the line through insulator strings, and at the same time, the three-phase wires are respectively passed through The lightning arrester is guided down to the cable head on the cross arm of the three-layer cable head bracket.

The 110 kV transmission line π-connected cable led down steel pipe pole integrates the wire hanging point cross arm and the cable head support cross arm into a steel pipe pole, reducing the use of 1 base cable terminal pole and correspondingly reducing 1 The use of the steel pipe pole foundation saves the floor area and investment cost. By fixing the upper cable head support cross arm and the middle cable head support cross arm to the middle conductor cross arm and the lower conductor cross arm respectively, the middle part is fully utilized. The conductor cross-arm and the lower conductor cross-arm do not need additional support cross-arms for supporting the upper cable head bracket cross arm and the middle cable head bracket cross arm, and at the same time, the cable head is better fixed.

As an improvement of the technical solution, the upper cable head support cross arm 8 and the middle cable head support cross arm 9 are fixedly connected to the middle of the middle conductor cross arm 3 and the lower conductor cross arm 4 respectively.

The specific implementation of the utility model is written in a progressive manner, emphasizing the differences of the various implementations, and the similar parts can be referred to each other.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments. Make various changes below.

Claims (2)

1. 110 kV transmission line π-connected cable lead down steel pipe rod, characterized in that it includes: rod body (1), upper wire cross arm (2), middle wire cross arm (3), lower wire cross arm (4), upper layer Conductor hanging point cross arm (5), middle layer wire hanging point cross arm (6), lower layer wire hanging point cross arm (7), upper cable head bracket cross arm (8), middle cable head bracket cross arm (9), lower layer Cable head support cross arm (10), lightning arrester (11), cable head (12) and cable support (13), wherein, the upper wire cross arm (2), the middle wire cross arm (3) and the lower wire cross arm (4 ) is parallel and fixedly connected to the shaft (1) from top to bottom, and the upper wire hanging point crossarm (5), the middle layer wire hanging point crossarm (6) and the lower layer wire hanging point crossarm (7) are vertically fixedly connected to the One end of the upper wire cross arm (2), the middle wire cross arm (3) and the lower wire cross arm (4) are arranged parallel to the extension direction of the wire, the upper wire hanging point cross arm (5), the middle layer wire hanging point cross arm (6) and the two ends of the lower layer wire hanging point crossarm (7) are all horizontally provided with wire hanging points, and the lightning arrester hanging point is vertically arranged, and the lightning arrester (11) is suspended on the hanging point of the lightning arrester, and the upper cable head support crossarm ( 8) and the middle layer cable head support cross arm (9) are respectively fixedly connected to the middle wire cross arm (3) and the lower wire cross arm (4) and are connected to the middle wire hanging point cross arm (6) and the lower layer wire hanging point cross arm (7) Arranged in parallel, the lower layer cable head support cross arm (10) is fixed parallelly below the middle layer cable head support cross arm (9) through the support cross arm (14), and the cable heads (12) are respectively connected to the upper layer cable head support cross arm Bear (8), the two ends of middle layer cable head support cross arm (9) and lower floor cable head support cross arm (10), and cable support (13) is fixed on the shaft (1) at intervals, and is used for fixing down-lead cables. 2. According to claim 1, the 110 kV power transmission line π-connected cable lead down steel pipe rod is characterized in that: the upper cable head support cross arm (8) and the middle layer cable head support cross arm (9) are respectively fixedly connected to the middle The middle part of the conductor cross-arm (3) and the lower conductor cross-arm (4).