CN202580312U - Support frame for cable of transformer substation - Google Patents

Abstract

The utility model relates to a bracket for a substation cable. The bracket includes a column and at least one support arm. The support arm includes an upper arm and a side arm respectively connecting the upper arm and the column, and also includes a clamp. The clamp includes an upper clamp body, a lower The clip body and the fixing seat, the lower clip body is fixed on the fixing seat, the upper clip body is fixed on the lower clip body by bolts, and the fixing seat is fixed on the upper arm by bolts. Compared with the prior art, the utility model has the advantages of flexibility, convenience, long service life and the like.

Description

A support for substation cables

technical field

The utility model relates to a support for cables, in particular to a support for cables in substations.

Background technique

In substation cable layers, cable trenches, cable tunnels and other power cable structures, the brackets used to support and fix cables play a very important role in cable installation and operation. In general projects, steel structure cable supports are used. The structure is generally welded with angle steel and civil embedded parts or assembled with channel steel and steel plates. This kind of support has the following problems:

(1) Easy to rust. Steel structure cable brackets have poor antirust and chemical corrosion resistance, especially in humid environments, in long-term waterlogged cable trenches and cable wells, steel structure cable brackets corrode quickly, even after galvanized treatment, they will inevitably suffer from corrosion . Usually, steel supports need to be maintained every 5-7 years.

(2) For high-voltage single-core cables, when the outer sheath of the cable is damaged, it may form a grounding loop through the steel structure support or generate gap discharge, resulting in further damage to the outer sheath of the cable.

(3) The high-voltage single-core large-section cable, due to the action of the alternating electromagnetic field during operation, will produce obvious eddy current loss and hysteresis loss on the conductive magnetic medium steel structure cable support, resulting in an increase in the temperature of the support, thus making the cable outside The surface temperature of the sheath increases, and the thermal resistance of the surrounding medium increases, which affects the transmission capacity of the cable.

Contents of the invention

The purpose of the utility model is to provide a flexible, convenient and long-life support for substation cables in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions: a bracket for substation cables, the bracket includes a column and at least one support arm, and the support arm includes an upper arm and a side arm respectively connecting the upper arm and the column, characterized in that , also includes a fixture, the fixture includes an upper clamp body, a lower clamp body and a fixed seat, the lower clamp body is fixed on the fixed seat, the upper clamp body is fixed on the lower clamp body by bolts, and the fixed seat is fixed by bolts on the upper arm.

One side of the column is provided with a card slot, and the other side is provided with a plurality of positioning holes and a plurality of fixing holes, and the support arm is fixed on the column through the positioning hole through a bolt, and the card slot is located in the On the wall on which the cable is to be installed, the column is fixed by bolts passing through the fixing holes.

The intervals between the plurality of positioning holes are 10-50 cm, and the intervals between the plurality of fixing holes are 10-50 cm.

The upper clamp body and the lower clamp body are connected by bolts to form a through hole matching the outer diameter of the cable.

Positioning grooves are provided on both sides of the fixing seat, and the fixing seat is fixed on the upper arm by bolts passing through the positioning grooves.

The upper arm is provided with at least one clamp.

The bracket of the utility model is made of a composite material, which uses resin as a matrix, glass fiber as a reinforcing material, and antioxidants, refractory materials, etc. are added. This kind of composite material technology is relatively mature, widely used, and the price of raw materials is relatively cheap. However, it has excellent mechanical properties, electrical properties and chemical stability, high mechanical strength, good heat resistance and instantaneous high temperature ablation resistance. In particular, the resin-based composite material has excellent corrosion resistance. It does not produce electrochemical corrosion like ordinary steel. It is non-conductive and does not dissolve ions in the electrolytic solution, so it is resistant to the atmosphere, water and general concentrations of acids, Alkali, salt and other media have good stability, and have excellent fire resistance.

Compared with the prior art, the utility model is provided with a plurality of positioning holes on the column, and the appropriate positioning hole can be selected to fix the support arm according to the needs of the installation position. Finally, the cable is installed at the required height, and the upper clamp body and the lower clamp body of the clamp can be installed at the required height. The clamp body is set separately, and the size of the through hole formed after its connection is adjusted by bolts to adapt to cables with different outer diameters. A fixing groove is set on the base of the clamp. Since the fixing groove has a certain length, it can be used within a certain range. Adjust its horizontal position inside, flexible and convenient.

Description of drawings

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

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figure 1, a support for substation cables, the support includes a column 1 and two support arms, the support arm includes an upper arm 2 and a side arm 3 connecting the upper arm and the column respectively, and also includes a clamp 4, a clamp 4 There are four, fixed in pairs on the upper arms 2 of the two arms. The fixture includes an upper clip body 41, a lower clip body 42 and a fixing seat 43. The lower clip body 42 is fixed on the fixing seat 43, and the upper clip body 42 is fixed on the fixing seat 43. The clamp body 41 is fixed on the lower clamp body 42 by bolts, and the upper clamp body 41 and the lower clamp body 42 are connected by bolts to form a through hole matching the outer diameter of the cable. The size of the through hole can be adjusted by bolts to adapt to different outer diameters. According to the needs of diameter cables, positioning grooves 44 are provided on both sides of the fixing seat 43, and the fixing grooves 44 have a certain length, so the horizontal position of the clamp can be adjusted within a certain range, and the fixing seat 43 is fixed by bolts passing through the positioning grooves 44 On upper arm 2.

One side of the column 1 is provided with a card slot 11, and the other side is provided with a plurality of positioning holes and a plurality of fixing holes, and the support arm is fixed on the column 1 through the positioning holes by bolts, and the card slot 11 is clamped on the wall surface of the cable to be installed, and the column is fixed on the wall surface by bolts passing through the fixing holes.

The plurality of positioning holes are adjacent to each other at an interval of 10-50 cm, and the required height can be selected to fix the support arm on the column, and the adjacent intervals of the plurality of fixing holes are 10-50 cm.

The support arms and clamps can be provided in multiples as required.

The bracket of the utility model is made of a composite material, which uses resin as a matrix, glass fiber as a reinforcing material, and antioxidants, refractory materials, etc. are added.

Claims (6)

1. A support for substation cables, the support includes a column and at least one support arm, the support arm includes an upper arm and a side arm connecting the upper arm and the column respectively, it is characterized in that it also includes a clamp, and the clamp includes an upper clamp body , the lower clip body and the fixing seat, the lower clip body is fixed on the fixing seat, the upper clip body is fixed on the lower clip body by bolts, and the fixing seat is fixed on the upper arm by bolts. 2. The support for a substation cable according to claim 1, wherein one side of the column is provided with a card slot, and the other side is provided with a plurality of positioning holes and a plurality of fixing holes, and the support The arm is fixed on the column through the positioning hole through the bolt, and the card slot is clamped on the wall surface of the cable to be installed, and the column is fixed through the fixing hole through the bolt. 3 . The support for substation cables according to claim 2 , characterized in that the intervals between adjacent positioning holes are 10-50 cm, and the intervals between adjacent fixing holes are 10-50 cm. 4 . 4. A support for substation cables according to claim 1, characterized in that, the upper clamp body and the lower clamp body are connected by bolts to form a through hole matching the outer diameter of the cable. 5 . The support for substation cables according to claim 1 , wherein positioning grooves are provided on both sides of the fixing seat, and the fixing seat is fixed on the upper arm by bolts passing through the positioning grooves. 6. A support for substation cables according to claim 1, characterized in that at least one clamp is provided on the upper arm.

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