CN102709841B - Assembled suspension bridge outlet device - Google Patents

Abstract

The embodiment of the invention provides an assembled suspension bridge outlet device, which structurally comprises two fixed supports and a plurality of assembled mast sections, wherein the fixed supports are fixed on fittings at the two ends of composite insulator strings; the assembled mast sections between the two fixed supports form an assembled suspension bridge; the assembled master sections are connected through clamping grooves and wire dowels, or the assembled mast sections are connected with the fixed supports through the clamping grooves and the wire dowels; and each assembled mast section comprises two racks which are suspended on two adjacent composite insulator strings.

Description

An assembled suspension bridge outlet device

technical field

The invention relates to the technical field of power transmission line design, in particular to an assembled suspension bridge outlet device.

Background technique

In recent years, with the increasing demand for electricity and the development of transmission technology, UHV transmission lines such as 800kV and 1000kV have begun to be constructed and put into operation in China. In areas with heavy pollution levels, the use of composite insulators can play a positive role in improving the pollution flashover resistance of transmission lines and preventing and curbing the occurrence of pollution flashover accidents, and composite insulators have the advantages of low cost and maintenance-free. The popularization and application in China will bring remarkable benefits.

However, conventional strain insulator strings generally use glass insulators (or porcelain insulators). When workers need to carry out outgoing operations, they can directly step on and climb the traditional glass (or ceramic) insulator strings, and climb from the transmission tower to the wires for operation. .

After composite insulators are used in UHV tension strings, composite insulators have poor physical strength and are easily damaged, so they cannot withstand the climbing and trampling of workers. This also makes it impossible for workers to climb the insulator strings in the UHV transmission line according to the traditional method, which brings great inconvenience to maintenance and other work.

The above-mentioned technical problems also exist in high-voltage transmission lines with a voltage level below 500kV that partially use composite insulator strings at this stage. However, due to the low voltage level of this part of the 500kV transmission line, the length of the composite insulator is relatively small (generally within 5 meters), so it can be solved by installing an integral suspension bridge. However, in UHV transmission lines, the length of composite insulator strings is generally more than 10 meters. It is conceivable that installing an integral suspension bridge with a span of 10 meters at high altitude is extremely cumbersome and difficult to realize; even if it is barely realized, safety and practicality cannot be guaranteed at all, and the cost is too high.

Therefore, there is a lack of an outlet device at this stage, which can help the staff to complete the outlet process without damaging the composite insulator string.

Contents of the invention

In view of this, the purpose of the present invention is to provide an assembled suspension bridge cable outlet device, which can help workers complete the cable outlet process without damaging the composite insulator string.

To achieve the above object, the present invention has the following technical solutions:

An assembly suspension bridge outlet device, the specific structure of the device is as follows: the device includes two fixed supports and a plurality of assembled standard joints; the fixed supports are fixed on the fittings at both ends of the composite insulator string, and the two fixed The assembled standard sections form the assembled suspension bridge between the supports; the assembled standard sections or between the assembled standard sections and the fixed support are connected by card slots and nails; the assembled standard sections include two hangers, The two hangers are suspended on two adjacent insulator strings.

The fixed support is L-shaped, one end is fixed on the triangular joint plate at one end of the composite insulator string, and the other end is connected to the assembled standard section through a slot and a nail.

The assembled standard section is strip-shaped, and the assembled standard section is connected to a fixed support or connected to other assembled standard sections through card slots and nails.

The assembled standard section connected with the fixed support is provided with an extended bolt hole for adjusting the length of the assembled suspension bridge.

The material of the assembled standard section is glass fiber reinforced plastic, aluminum alloy or stainless steel.

The hanger has a hoop, and the hanger is suspended on the composite insulator string through the hoop.

The hoop has a hoop lining, and the material of the hoop lining is ethylene-vinyl acetate copolymer.

It can be seen from the above technical solutions that the beneficial effect of the present invention is that the fixed support of the assembled suspension bridge outlet device of the present invention is fixed to the fittings at both ends of the composite insulator string, and the assembled standard is used between the two fixed supports. At the same time, the assembled standard section is suspended on the composite insulator string with a hanger, and the staff can pass on the assembled suspension bridge to complete the outgoing process, avoiding trampling and climbing on the composite insulator string; , when the hanger is suspended, the design of the hoop and the pad is used to more effectively protect the composite insulator string without causing damage to the composite insulator string.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a structural schematic diagram of an assembly-type suspension bridge outlet device according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of the structure of the fixed support according to the embodiment of the present invention;

Fig. 3 is a schematic diagram of the structure of the assembled standard section described in the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Fig. 1, it is a specific embodiment of the assembly type suspension bridge outlet device of the present invention. In this embodiment, the device includes: two fixed supports and a plurality of assembled standard sections; the fixed supports are fixed on the fittings at both ends of the composite insulator string, and the fittings described in this embodiment are specifically delta joints The assembled suspension bridge is composed of assembled standard sections between two fixed supports; the assembled standard sections or between the assembled standard sections and the fixed supports are connected by card slots and nails; the assembled standard sections include two The two hangers are hung on two adjacent insulator strings. That is to say, the assembled suspension bridge is installed between two adjacent composite insulator strings, and its height is lower than that of the composite insulator strings. Workers can pass on the suspension bridge composed of assembled standard sections, using the insulator strings as handrails. Complete the exit process.

Referring to Figure 2, it is a schematic structural diagram of the fixed support in this embodiment, and Figure 3 is a schematic structural diagram of the assembled standard section. The fixed support in this embodiment is L-shaped, and its upper end is fixed at one end of the composite insulator string On the triangular joint plate, the front end is connected to the assembled standard section through a slot and a nail; Thread the nail to adjust the angle for the shaft rotation.

In addition, the following optimization design can also be carried out for the above-mentioned embodiment:

Since the length of the composite insulator string often has certain errors, the length of the assembled suspension bridge needs to be adjusted accordingly. In this embodiment, an elongated bolt hole is provided on the assembled standard section connected to the fixed support, and the length can be adjusted within the length range of the elongated bolt hole. In this embodiment, the assembled standard section with the extended bolt hole is set at the end section of the assembled suspension bridge, and the nails that play a connecting role can be fixed at any position of the extended bolt hole, so it can be realized within the scope of the extended bolt hole Multiple lengths can be adjusted.

The hanger is suspended on the composite insulator string through hoops, and the hoops are lined with ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer for short: EVA).

The material of the assembled standard section is glass fiber reinforced plastic, aluminum alloy or stainless steel.

The outlet device of the assembled suspension bridge needs to be reasonably dimensioned on the premise of ensuring the strength, and the weight of the device should be reduced as much as possible. Generally, the length of a single assembled standard section is 0.6m-1m. The specific parameters of the assembled suspension bridge outlet device described in the present embodiment are given below:

Assembled standard section single section length: 800mm; single section weight: 3.5kg; fixed support height: 500mm; overall length of assembled suspension bridge outlet device: 10200mm; adjustable length (that is, lengthening bolt hole length) 150mm; standard section number: 12 sections; assembled standard section material: aluminum alloy, section 100mm×80mm; hoop lining: EVA.

In addition, the installation method of the assembled suspension bridge outlet device in the present invention is disclosed as follows:

First, fix the fixed support at the end of the iron tower to the triangular joint plate at the end of the composite insulator string connected to the iron tower, connect the first assembled standard section to the front end of the fixed support through slots and nails, and adjust the assembled standard section to the horizontal angle; hang the hanger on the adjacent two strings of composite insulator strings; then connect the second assembled standard section to the first assembled standard section through slots and nails, and connect the assembled standard section Adjust to the horizontal angle; hang the hanger on the adjacent two strings of composite insulator strings; and so on until the installation of the last assembled standard section is completed; fix the fixed support at the end of the wire to the triangle at the end of the composite insulator string Connect the connecting plate, and connect the fixed support of the wire end and the last assembled standard section through the card slot and the nail.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (6)

1. assemble a suspension bridge outlet device, it is characterized in that, described device concrete structure is as follows: described device comprises, two hold-down supports and multiple assembly type standard knot; Described hold-down support is fixed on the gold utensil at composite insulator string two ends, forms assembly type suspension bridge between two hold-down supports by assembly type standard knot; Between assembly type standard knot or assembly type standard knot be connected with drift bolt by draw-in groove with between hold-down support; Described assembly type standard knot comprises two hangers, and described two hangers are suspended on adjacent two composite insulator strings; The assembly type standard knot be connected with hold-down support is provided with Lengthened bolt hole, for regulating the length of assembly type suspension bridge.

2. device according to claim 1, it is characterized in that: described hold-down support is L-type, one end is fixed on the triangle yoke plate of composite insulator string one end, and the other end assembles formula standard knot by draw-in groove and drift bolt.

3. device according to claim 2, it is characterized in that: described assembly type standard knot is stripe shape, assembly type standard knot is connected and fixed bearing by draw-in groove and drift bolt or is connected other assembly type standard knots.

4. device according to claim 1-3 any one, is characterized in that: the selection of described assembly type standard knot is fiberglass, aluminium alloy or stainless steel.

5. device according to claim 1, is characterized in that: described hanger is with anchor ear, and described hanger is suspended on composite insulator string by anchor ear.

6. device according to claim 5, is characterized in that: described anchor ear is with anchor ear liner, and the material of anchor ear liner is ethylene-vinyl acetate copolymer.