CN216699321U

CN216699321U - Transformer substation framework adopting cantilever beam structure

Info

Publication number: CN216699321U
Application number: CN202220052107.0U
Authority: CN
Inventors: 张�浩; 李金海; 刘亮亮; 彭敏文; 张宇峰; ***; 马东升; 刘中伟; 佟景燊; 马晓伟; 刘炀; 刘舒; 于瑞; 魏文斌; 田顺心; 陈开璇; 李维奇; 王建勋; 张红; 杨莉洁
Original assignee: North China Power Engineering Co Ltd of China Power Engineering Consulting Group
Current assignee: North China Power Engineering Co Ltd of China Power Engineering Consulting Group
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-06-07
Anticipated expiration: 2032-01-10

Abstract

The utility model relates to a transformer substation framework adopting a cantilever beam structure, which comprises a cross beam and at least two herringbone columns which are connected, wherein the cross beam is provided with a hanging point and is connected with a lead through the hanging point, the cross beam is provided with a cantilever beam outside the connecting line range of the two herringbone columns close to the outer side, and the cantilever beam is provided with at least one hanging point. Compared with the prior art, the scheme of the utility model utilizes the characteristics of the transformer substation framework, modifies the connecting position of the cross beam and the herringbone column, adopts the form of the cantilever beam, reduces the span and the length of the cross beam of the transformer substation framework, saves the occupied area and the steel consumption, and has obvious economic benefit.

Description

Transformer substation framework adopting cantilever beam structure

Technical Field

The utility model relates to the technical field of power transmission and transformation, in particular to a transformer substation framework adopting a cantilever beam structure.

Background

The transformer substation framework is a support structure for incoming wires, outgoing wires and internal leads of the transformer substation, and plays roles in keeping safe clear distance of a power line to the ground and equipment and reasonably planning and distributing an incoming path and an outgoing path of the power line. For example, a single-span 500kV step-down substation framework has a structure shown in fig. 1, each substation framework is composed of two groups of herringbone columns and a lattice-type beam (simplified to a line segment in the figure), two ends of the beam are respectively connected with top ends of the two herringbone columns, three wires are respectively connected vertically at each hanging point on the beam, and the hanging points are located between the two herringbone columns. The structure can ensure that the space between the three wires and the stress load condition of the cross beam meet the requirements, but the distance (span) between the two herringbone columns is larger, the occupied area is large, the cross beam is longer, the amount of used steel is more, and the space cost and the material cost are both higher.

SUMMERY OF THE UTILITY MODEL

Based on the problems in the prior art, the utility model provides a transformer substation framework with lower occupied area and material cost, which is suitable for a single-span 500kV step-down transformer substation framework.

According to the technical scheme, the utility model provides a transformer substation framework adopting an overhanging beam structure, which comprises a cross beam and at least two herringbone columns which are connected, wherein hanging points are arranged on the cross beam, a lead is connected with the cross beam through the hanging points, the cross beam is provided with an overhanging beam outside the connecting line range of the two herringbone columns close to the outer side, and at least one hanging point is arranged on the overhanging beam.

Furthermore, the herringbone columns are connected with the cross beams through top plates, the cross beams are arranged on the two sides of each top plate, one side of each top plate is a cantilever beam, and the other side of each top plate is a middle section part of each cross beam.

Furthermore, the cross beam is of a lattice structure, a frame with a triangular cross section is formed by three parallel pipes, a plurality of supporting pieces are connected among the three pipes, and the three pipes comprise a first main beam, a second main beam and a third main beam which are positioned below the first main beam and the second main beam; a column through hole is formed in the middle of the top plate, and the top of the herringbone column is fixedly arranged in the column through hole; the upper surface of the top plate is provided with a plurality of flange pieces, and the first main beam and the second main beam are respectively connected in the corresponding flange pieces in a penetrating manner.

Preferably, the flange pieces comprise a first flange piece and a second flange piece corresponding to the position of the first main beam, and a third flange piece and a fourth flange piece corresponding to the position of the second main beam; there is a space between the first and second flange members and between the third and fourth flange members.

In one embodiment, the number of the conducting wires is three, the number of the hanging points is six, and each conducting wire is correspondingly connected with two hanging points; the two hanging points at the two ends are respectively arranged on the cantilever beams at the two ends.

Further, a gap is formed between a hanging point on the cantilever beam and the end, close to the outside, of the cantilever beam.

Compared with the prior art, the transformer substation framework adopting the cantilever beam structure has the following beneficial technical effects:

1. the utility model provides a novel connecting mode of a framework cross beam and a herringbone column of a transformer substation, the cross beam adopts an overhanging form, the framework span is greatly reduced, taking a 500kV step-down transformer substation framework as an example, the occupied area of the framework is reduced from 30m to 18m, and the saving is 40%.

2. Under the condition of not changing the number and the spacing of the leads, the length of the cross beam is reduced, taking a 500kV step-down substation framework as an example, the length of the cross beam is reduced from 30m to 23.8m, the total steel amount is reduced from 23.915t to 21.640t, 9.5 percent of saving is achieved, and the economic benefit is obvious.

3. The flange part of the top plate is correspondingly arranged at a novel position, so that the herringbone columns and the cross beam are stably and firmly connected under the condition of the cantilever beam.

Drawings

Fig. 1 is a schematic structural diagram of a conventional substation structure.

Fig. 2 is a schematic structural diagram of the substation framework of the present invention.

Fig. 3 is a schematic top view of a cross beam according to an embodiment of the utility model.

FIG. 4 is a schematic side view of a cross beam according to an embodiment of the present invention.

Fig. 5 is a schematic top view of a top plate according to an embodiment of the present invention.

The names of the components indicated by reference numerals in the drawings are as follows: 1. a herringbone column; 2. a cross beam; 3. hanging points; 4. a wire; 5. a cantilever beam; 6. a top plate; 7. a first main beam; 8. a second main beam; 9. the posts pass through the holes; 10. a support member; 11. a first flange member; 12. a second flange member; 13. a third flange member; 14. a fourth flange member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the utility model without any inventive work belong to the protection scope of the patent of the utility model.

The utility model provides a transformer substation framework adopting a cantilever beam structure, which is suitable for a single-span 500kV step-down transformer substation framework, for example, and comprises a cross beam and at least two herringbone columns which are connected, wherein the cross beam is provided with a hanging point and is connected with a lead through the hanging point, the cross beam is provided with a cantilever beam outside the connecting line range of the two herringbone columns close to the outer side, and the cantilever beam is provided with at least one hanging point. The scheme of the utility model utilizes the characteristics of the transformer substation framework, modifies the connecting position of the cross beam and the herringbone column, adopts the form of the cantilever beam, reduces the span and the length of the cross beam of the transformer substation framework, and saves the occupied area and the steel consumption.

Specifically, referring to fig. 2, the substation framework adopting the cantilever beam structure of the present invention includes a cross beam 2 and at least two herringbone columns 1 connected to each other, the cross beam 2 has a hanging point 3 and is connected to a lead 4 through the hanging point 3, the cross beam 2 has a cantilever beam 5 (the cantilever beam 5 is a part of the cross beam 2) outside a connection line of the two herringbone columns 1 near the outer side, and the cantilever beam 5 is provided with at least one hanging point 3. The herringbone columns 1, the hanging points 3, the connecting modes of the hanging points 3 and the wires 4 and the like can be realized by adopting the prior technical scheme. The herringbone columns 1 are connected with the cross beams 2 through top plates 6, the cross beams 2 are arranged on two sides of the top plates 6, one side of each top plate 6 is an overhanging beam 5, and the other side of each top plate 6 is a middle section of each cross beam 2.

It is envisaged that the solution of the present invention is preferably applied to the single-span substation framework shown in fig. 2, i.e. a crossbeam 2 is carried by two herring-bone pillars 1 at two side positions, the herring-bone pillars 1 are connected to the inside of the crossbeam 2 rather than the ends, and there is a space between the connection point and the ends of the crossbeam 2, and this space is the cantilever beam 5; for the continuous multi-span situation, for example, two substation frameworks shown in fig. 1 are arranged side by side and the middle of the two substation frameworks shares one herringbone column 1, an overhanging beam 5 can be arranged outside the two herringbone columns 1 close to the outer side, and the two sides of the herringbone column 1 in the middle are not provided with the overhanging beam 5; or, the cantilever beam 5 is arranged at one end, and the other end is still connected with the end part in the existing mode; as long as the cantilever beam structure is arranged, the effects of reducing span, length of the cross beam 2 and the like can be achieved.

The following description will take a single-span 500kV step-down substation architecture as an example according to an embodiment of the present invention. Referring to fig. 3 to 4, the cross beam 2 is a conventional lattice structure beam, which is a frame with a triangular cross section formed by three parallel pipes (e.g., steel pipes), and a plurality of supporting members 10 (e.g., angle steels) are connected between the three pipes to form a stable triangular structure; the three pipes comprise a first main beam 7, a second main beam 8 and a third main beam.

As shown in fig. 5, the top plate 6 is provided with a post through hole 9 at a central position, the shape of the post through hole 9 corresponds to the top portion of the herringbone post 1, and the top portion of the herringbone post 1 is fixedly arranged in the post through hole 9. The upper surface of the top plate 6 is fixedly provided with a plurality of flange pieces, for example, by bolts, and the first main beam 7 and the second main beam 8 are respectively penetrated in the corresponding flange pieces, so that the cross beam 2 is fixed with the top plate 6 and the herringbone columns 2.

Preferably, as shown in fig. 5, the flange members include a first flange member 11 and a second flange member 12 corresponding to the position of the first main beam 7, and a third flange member 13 and a fourth flange member 14 corresponding to the position of the second main beam 8; there is a space between the first flange part 11 and the second flange part 12 and between the third flange part 13 and the fourth flange part 14. For example, the top plate 6 is substantially square and the four flange members are located at the corners of the square of the top plate 6. The two flange pieces for fixing the same steel pipe are spaced, so that the fixing effect is better, and the fixed steel pipe is not easy to deflect and move.

The conductors 4 are, for example, in the form of three-phase conductors, the conductors 4 have three, correspondingly, the hanging points 3 have six, and each conductor 4 is connected to two hanging points 3 correspondingly, for example, by an insulator string; the two hanging points 3 at the two ends are respectively arranged on the cantilever beams 5 at the two ends. Further, a gap is reserved between the hanging point 3 on the cantilever beam 5 and the tail end, close to the outside, of the cantilever beam 5, and therefore the stress load requirement of the cross beam 2 can be met.

Certainly, the top end of the herringbone column can be fixedly connected with a lightning conductor column and a lightning rod. It can be understood that the utility model is mainly improved on the position relation between the cross beam 2 and the herringbone columns 1 and the related structures, and other required structures can be realized by adopting the existing scheme.

Taking a single-span 500kV step-down transformer substation framework as an example, according to actual conditions and simulation calculation, when the prior art scheme shown in fig. 1 is adopted, the framework heel-off (the distance between two herringbone columns 1) is 30m, the length of a cross beam 2 is 30m, all hanging points 3 are arranged on the inner side of the cross beam 2 (between the two herringbone columns 1), and the total steel amount of the framework is about 23.915 t. By adopting the scheme of the utility model, the frame heel is reduced to 18m, the saving is 40%, the length of the cross beam 2 is 23.8m, the middle hanging point is arranged at the inner side of the cross beam 2, the side hanging points are arranged on the cantilever beam 5 at the outer side of the cross beam 2, and the total steel amount of the frame is 21.640t, and the saving is 9.5%; the economic benefit is obvious.

The above are only preferred embodiments of the present invention, and the scope of the present invention is not limited to the above examples, and all technical solutions that fall under the spirit of the present invention belong to the scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides an adopt cantilever beam structure's transformer substation framework, is including crossbeam (2) and at least two herringbone posts (1) that are connected, have on crossbeam (2) and hang point (3) and be connected with wire (4) through hang point (3), its characterized in that, crossbeam (2) is leaning on two in the outside the line scope of herringbone post (1) has cantilever beam (5), be provided with at least one on cantilever beam (5) hang point (3).

2. A substation framework with cantilever beam structure according to claim 1, wherein the herringbone pillar (1) is connected with the cross beam (2) through a top plate (6), the cross beam (2) is arranged on both sides of the top plate (6), one side of the top plate (6) is the cantilever beam (5), and the other side of the top plate (6) is the middle section of the cross beam (2).

3. A substation frame with cantilever beam structure according to claim 2, wherein the beam (2) is a lattice structure, a frame with a triangular cross section is formed by three parallel pipes, and a plurality of supporting members (10) are connected between the three pipes, wherein the three pipes comprise a first main beam (7) positioned below, a second main beam (8) and a third main beam positioned above;

a column through hole (9) is formed in the middle of the top plate (6), and the top of the herringbone column (1) is fixedly arranged in the column through hole (9); the upper surface of the top plate (6) is provided with a plurality of flange pieces, and the first main beam (7) and the second main beam (8) are respectively connected in the corresponding flange pieces in a penetrating manner.

4. A substation frame with cantilever beam structure according to claim 3, wherein the flange pieces comprise a first flange piece (11) and a second flange piece (12) corresponding to the position of the first main beam (7), and a third flange piece (13) and a fourth flange piece (14) corresponding to the position of the second main beam (8); a space is provided between the first flange part (11) and the second flange part (12), and between the third flange part (13) and the fourth flange part (14).

5. A substation framework with cantilever beam structure according to any of claims 1-4, characterized in that the number of wires (4) is three, the number of hanging points (3) is six, each wire (4) is correspondingly connected to two hanging points (3); two hanging points (3) positioned at two ends are respectively arranged on the cantilever beams (5) at two ends.

6. A substation frame with cantilever beam structure according to any of claims 1-4, characterized in that there is a space between the hanging point (3) on the cantilever beam (5) and the outer end of the cantilever beam (5).