CN212875061U

CN212875061U - High-voltage single-core cable mounting bracket structure

Info

Publication number: CN212875061U
Application number: CN202022017416.8U
Authority: CN
Inventors: 林美东; 林建安; 姚海荣
Original assignee: Fujian Yongfu Power Engineering Co Ltd
Current assignee: Fujian Yongfu Power Engineering Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-04-02
Anticipated expiration: 2030-09-15

Abstract

The utility model provides a high pressure single core cable mounting bracket structure, the mounting structure is the lattice structure that comprises first angle steel and the steel sheet that is used for fixed high pressure single core cable, the cross-section of the bottom surface of the mounting structure is square, four angular directions of the bottom surface are respectively provided with the first angle steel, four first angle steels enclose into four faces, three of them are connected into a whole from bottom to top through the framework, and the rest one face is open among the four faces; the top and the bottom of each of the four first angle steels are respectively provided with the steel plate, the middle of each steel plate is provided with a through hole, one end face of each steel plate is provided with a cutting seam, and copper materials are welded on the cutting seams; the support structure is compact as a whole, convenient to construct and less in time consumption; stable structure, even stress and basically no action force such as bending moment, torque and the like.

Description

High-voltage single-core cable mounting bracket structure

Technical Field

The utility model relates to a power equipment technical field, especially a high pressure single core cable installing support structure.

Background

As shown in figure 1, the distribution device of the indoor substation is compactly arranged, and cables are used for entering and exiting wires in 110kV and 220kV voltage levels. The cable of 110kV and above is a single core structure. As shown in fig. 2, a circular steel pipe frame 1' is generally adopted in conventional engineering, and a bracket is suspended from the top of the circular steel pipe frame and used for fixing a high-voltage single-core cable.

The existing round steel pipe frame for the cable has the following problems:

1. the dead weight of the high-voltage cable is large, and the resultant force is large under the action of short-circuit electric power when short-circuit faults occur. The steel pipe frame bears acting forces such as bending moment, torque and the like, and has high requirements on a support structure and a lower foundation.

2. The cable and the steel pipe bracket occupy larger space, have limited indoor space, occupy channels and are not beneficial to subsequent work such as inspection, overhaul and the like.

3. The circular steel pipe frame forms a closed loop (radial), eddy current effect caused by electromagnetic induction in the operation of the high-voltage single-core cable is inevitable, the steel pipe generates heat, and the safe operation and daily operation and maintenance of the cable are influenced.

Disclosure of Invention

In order to overcome the problems, the utility model aims at providing a high pressure single core cable installation supporting structure, this supporting structure's steel sheet slot is full with the copper product welding, blocks the vortex return circuit, improves support stability.

The utility model discloses a following scheme realizes: a high-voltage single-core cable mounting support structure is a lattice structure consisting of first angle steels and steel plates for fixing high-voltage single-core cables, the cross section of the bottom surface of the support structure is square, the first angle steels are respectively arranged in the four corner directions of the bottom surface, the four first angle steels surround four faces, three faces are connected into a whole from the bottom to the top through a lattice frame, and the rest face of the four faces is open; the top and the bottom in four first angle steels are respectively provided with the steel sheet, the through-hole has been seted up at the steel sheet middle part, a steel sheet terminal surface has the slot, the welding has the copper product on the slot.

Furthermore, the grillage comprises three second angle steels, the second angle steels are arranged between the inner sides of the two first angle steels, and the three second angle steels are connected end to end in sequence.

Furthermore, a third angle steel is arranged between second angle steels on two opposite surfaces in the three surfaces, a cable clamp used for clamping a high-voltage single-core cable is fixed on the third angle steel, and a hole used for penetrating through the high-voltage single-core cable is formed in the middle of the cable clamp.

Further, the cable clamp has 3, and 3 cable clamps set up respectively on top, middle part, the bottom in four first angle steels, and the cable clamp at top is located the steel sheet below at top, and the cable clamp at bottom is located the steel sheet top of bottom.

Further, a cable terminal is fixed on the steel plate at the top.

The beneficial effects of the utility model reside in that: the steel plate slot of the bracket framework of the utility model is fully welded by copper material, thereby blocking the eddy current loop and improving the stability of the bracket; the lattice type high-voltage single-core cable mounting bracket structure is attractive in whole, convenient to construct and low in time consumption; the structure is stable, the stress is uniform, and the acting forces such as bending moment, torque and the like are basically avoided; the eddy current effect caused by electromagnetic induction in the operation of the high-voltage single-core cable is avoided.

Drawings

Fig. 1 is a schematic diagram of a prior art power distribution unit for an indoor substation.

Fig. 2 is a schematic view of a circular steel pipe frame of a cable in the prior art.

Fig. 3 is the front schematic view of the high-voltage single-core cable mounting bracket structure of the present invention.

Fig. 4 is a schematic view of a-a in fig. 3.

Fig. 5 is a schematic diagram of B-B in fig. 3.

Fig. 6 is a schematic diagram of the lower half of the present invention.

Fig. 7 is a broken-away schematic view of the bottom portion of fig. 6.

Fig. 8 is a schematic diagram of the upper part of the present invention.

Fig. 9 is a schematic diagram of the present invention applied to a field.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 3, 4 and 5, the high-voltage single-core cable mounting bracket structure 100 of the present invention is a lattice structure composed of a first angle steel 1 and a steel plate 3 for fixing a high-voltage single-core cable 2, the cross section of the bottom surface of the bracket structure is square, as shown in fig. 6 and 7, the first angle steel 1 is respectively configured at four angular directions of the bottom surface, four first angle steels 1 enclose four faces, wherein three faces are connected into a whole by a grid 4 from bottom to top at a certain distance, and the remaining one face of the four faces is open; the top and the bottom in the four first angle steels are respectively provided with the steel plate 3, the middle part of the steel plate 3 is provided with a through hole 32, and the top of the four first angle steels 1 is provided with the steel plate 3 for placing the cable terminal 5. The lattice structure has even stress, basically no acting force such as bending moment, torque and the like, and the mounting bracket has stable structure.

As shown in fig. 4, the steel plate 3 has a slit on one end surface, and the copper material 31 is welded to the slit. Thus, the eddy current loop is blocked, and the stability of the bracket is improved.

As shown in fig. 8, the lattice 4 includes three second angle steels 41, the second angle steels 41 are erected between the inner sides of the two first angle steels 1, and the three second angle steels 41 are connected end to end in sequence. This second angle steel makes the overall bracket structure more firm, and the structure is more pleasing to the eye.

Third angle steel 6 is provided with between the second angle steel on two relative faces in the three face, is fixed with cable clamp 7 that is used for centre gripping high pressure single core cable on the third angle steel 6, the hole 71 that is used for passing high pressure single core cable is seted up at cable clamp 7 middle part. The cable clamp 7 can better clamp a high-voltage single-core cable.

The number of the cable clamps 7 is 3, the 3 cable clamps 7 are respectively arranged on the top, the middle and the bottom of the four first angle steels 1, the cable clamp 7 on the top is positioned below the steel plate 3 on the top, and the cable clamp on the bottom is positioned above the steel plate 3 on the bottom; the top steel plate is fixed with a cable termination 5. The cable clamp is made of aluminum alloy materials, does not conduct magnetism, can be closed, blocks an eddy current loop, fixes a cable and improves the stability of the support.

The utility model discloses a theory of operation does:

as shown in fig. 9, the support structure is installed on the ground of the cable tunnel, the high-voltage electric core cable penetrates out of the ground, passes through the steel plate at the bottom and the cable clamp, and finally the tail of the high-voltage electric core cable is connected with the cable terminal 5 through the steel plate at the top. One end face of each steel plate is provided with a slot, and copper materials 31 are welded on the slots. Thus, the eddy current loop is blocked, and the stability of the bracket is improved. The whole support structure is of a lattice structure, so that the stress is uniform, acting forces such as bending moment and torque are basically avoided, and the mounting support structure is stable.

In a word, the utility model discloses a supporting structure is the cuboid, and the lattice structure constitutes the material and is first angle steel, second angle steel and steel sheet. The bottom surface of the bracket is square, the first angle steel is respectively arranged in the four corner directions of the bottom surface, three surfaces are connected into a whole from the bottom to the top through a grid, and the rest surface is open. The cross section of the lattice support (parallel to the ground) is broken and does not form a closed surface. The top cable is fixed with the steel sheet slot and is welded with the copper product and fill, blocks the vortex return circuit, improves support stability. The lattice type high-voltage single-core cable mounting bracket structure is attractive in whole, convenient to construct and less in time consumption; the structure is stable, the stress is uniform, and the acting forces such as bending moment, torque and the like are basically avoided; the eddy current effect caused by electromagnetic induction in the operation of the high-voltage single-core cable is avoided.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention shall fall within the scope of the present invention.

Claims

1. The utility model provides a high pressure single core cable installing support structure which characterized in that: the support structure is a lattice structure consisting of first angle steels and steel plates for fixing the high-voltage single-core cable, the cross section of the bottom surface of the support structure is square, the first angle steels are respectively arranged in the four corner directions of the bottom surface, the four first angle steels surround to form four faces, three faces are connected into a whole from the bottom to the top through a lattice, and the rest face of the four faces is open; the top and the bottom in four first angle steels are respectively provided with the steel sheet, the through-hole has been seted up at the steel sheet middle part, a steel sheet terminal surface has the slot, the welding has the copper product on the slot.

2. A high voltage single core cable mounting bracket structure according to claim 1, characterized in that: the grillage is including three second angle steel, and the second angle steel frame is established between two first angle steel inboards, and three second angle steel head and the tail connect gradually.

3. A high voltage single core cable mounting bracket structure according to claim 2, characterized in that: third angle steel is arranged between second angle steel on two opposite surfaces in the three surfaces, a cable clamp used for clamping a high-voltage single-core cable is fixed on the third angle steel, and a hole used for penetrating the high-voltage single-core cable is formed in the middle of the cable clamp.

4. A high voltage single core cable mounting bracket structure according to claim 3, wherein: the cable clamp has 3, and 3 cable clamps set up respectively on top, middle part, the bottom in four first angle steels, and the cable clamp at top is located the steel sheet below at top, and the cable clamp at bottom is located the steel sheet top of bottom.

5. A high voltage single core cable mounting bracket structure according to claim 1, characterized in that: the steel plate at the top is fixed with a cable terminal.