CN210867041U

CN210867041U - GIS (geographic information system) outgoing line framework with two loops and one span

Info

Publication number: CN210867041U
Application number: CN201921968331.9U
Authority: CN
Inventors: 靳幸福; 吴晓鸣; 张纯玉; 盛金马; 何宇辰; 朱灿; 王笠; 鲍玉莹; 高廷峰; 朱胜; 敖斌; 朱德斌; 邱新刚; 李孝尊; 谈成龙; 陈安英
Original assignee: State Grid Anhui Zhongxing Electric Power Design Institute Co ltd; Anhui Huadian Engineering Consulting and Design Co Ltd; Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd
Current assignee: State Grid Anhui Zhongxing Electric Power Design Institute Co ltd; Anhui Huadian Engineering Consulting and Design Co Ltd; Economic and Technological Research Institute of State Grid Anhui Electric Power Co Ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-06-26
Anticipated expiration: 2029-11-14

Abstract

The utility model discloses a GIS outgoing line framework with two loops and one span, which comprises a first framework column, a second framework column and a cross rod, wherein the top of the second framework column is connected with the rod body of the first framework column through the cross rod, the tops of a plurality of first framework columns are connected with an upper framework beam, and the tops of a plurality of second framework columns are connected with a middle framework beam; the rod bodies of the upper-layer framework beam and the middle-layer framework beam are respectively connected with a plurality of cantilever framework beams; the fixed ends of the cantilever frame beams are vertically and fixedly connected with the rod body of the upper-layer framework beam, and the extending ends freely extend; the upper-layer framework beam comprises a plurality of sub-framework beams and a connecting mechanism, the sub-framework beams are connected through the connecting mechanism, and the fixed end of the cantilever framework beam is fixed with the connecting mechanism; simple structure, the atress is clear reasonable, has improved fixed stability, is convenient for install and overhaul.

Description

GIS (geographic information system) outgoing line framework with two loops and one span

Technical Field

The utility model relates to a framework technical field that is qualified for next round of competitions especially relates to a GIS framework of being qualified for next round of competitions of two-circuit one-span.

Background

The electric power system is a main component of the lifeline project, and the importance is self-evident; the transformer substation is used as a hub of a power transmission and transformation network, is the guarantee of industrial power utilization and civil power utilization, and the transformer framework is an important structure for supporting the tension of a down lead of the transformer substation.

Meanwhile, the current power demand is increased sharply, the occupied area for power transmission and transformation is reduced sharply, and in order to solve the contradiction and meet the economic development requirement, the occupied area of the transformer substation needs to be optimized to provide land utilization efficiency.

In structural form, the structural forms of the existing transformer substation framework mainly include the following types: (1) the reinforced concrete annular pole column structure adopts the bolt connection between the beam columns, so the investment cost in the early stage is low, the maintenance cost in the later stage is high, and the total cost is high; (2) rectangular section lattice column + rectangular section lattice roof beam, the advantage is that the member steel consumption is low, and is with low costs, and the shortcoming is that the structure is complicated, and the field installation process is complicated, and is high to the construction quality requirement. Therefore, a transformer substation framework structure with simple framework structure and reasonable stress is needed.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem that the background art exists, the utility model provides a GIS framework of being qualified for the next round of competitions of two returns one span, simple structure, the atress is clear reasonable, has improved fixed stability.

The utility model provides a GIS framework of being qualified for next round of competitions of two-span, including first framework post, second framework post and horizontal pole, the top of second framework post is connected with the body of rod of first framework post through the horizontal pole, and the top of a plurality of first framework posts is connected with upper framework roof beam, and the top of a plurality of second framework posts is connected with middle level framework roof beam; the rod bodies of the upper-layer framework beam and the middle-layer framework beam are respectively connected with a plurality of cantilever framework beams.

Furthermore, the fixed ends of the cantilever frame beams are vertically and fixedly connected with the rod body of the upper-layer framework beam, and the extending ends freely extend.

Furthermore, the upper-layer framework beam comprises a plurality of sub-framework beams and a connecting mechanism, the sub-framework beams are connected through the connecting mechanism, and the fixed end of the cantilever framework beam is fixed with the connecting mechanism.

Further, coupling mechanism includes first steel sheet and second steel sheet, the tip of connection and the first steel sheet fixed connection of sub-framework roof beam, through second steel sheet fixed connection between two first steel sheets, the stiff end and the second steel sheet fixed connection of cantilever frame roof beam.

Furthermore, the second steel sheet is X type steel sheet, and the stiff end of cantilever beam sets up a plurality of third steel sheets, and the third steel sheet inserts in order fixed connection in the second steel sheet.

Furthermore, a plurality of first bolt holes are formed in the second steel plate, a plurality of second bolt holes are formed in the third steel plate, and the second steel plate is fixedly connected with the third steel plate through bolts.

Furthermore, the same rod body position of a plurality of second truss columns is connected with a lower layer truss beam, and the lower layer truss beam and the middle layer truss beam are arranged in parallel.

And furthermore, three-phase outgoing is carried out through the upper-layer framework beam, the middle-layer framework beam and the lower-layer framework beam respectively, a first insulator string is arranged at the joint of the down lead and the upper-layer framework beam and the middle-layer framework beam, and a second insulator string is arranged at the joint of the down lead and the cantilever framework beam.

The utility model provides a pair of GIS that two times are striden is qualified for next round of competitions framework's advantage lies in: the GIS outgoing line framework with two loops and one span provided by the utility model reduces the transverse width of the framework beam and reduces the construction difficulty by arranging the cantilever frame beam; a vertical X-shaped fixing mode is adopted among the cantilever frame beams and the upper-layer frame beam and the middle-layer frame beam, the structure is simple, the stress is clear and reasonable, the fixing stability is improved, and the installation and the maintenance are convenient; the vertical space is reasonably utilized in the three-phase vertical outgoing line mode, the floor area of the 110kV power distribution device is greatly reduced, the reduction degree is about 40%, the steel consumption is reduced by about 30%, the construction difficulty is reduced, and the construction period is shortened.

Drawings

Fig. 1 is a schematic structural view of a two-circuit one-span GIS outgoing line framework of the present invention;

FIG. 2 is a schematic view of a connection structure of a cantilever beam and an upper-level framework beam;

FIG. 3 is a schematic view of a connection node structure of a cantilever steel pipe and an upper-layer framework beam;

FIG. 4 is a cross-sectional view of an outdoor power distribution unit circuit spacing;

the steel plate truss structure comprises 1-a first truss column, 2-a second truss column, 3-a cross bar, 4-an end support, 5-an upper-layer truss beam, 6-a middle-layer truss beam, 7-a cantilever truss beam, 8-a lower-layer truss beam, 71-a third steel plate, 72-a second bolt hole, 51-a sub-truss beam, 52-a connecting mechanism, 521-a first steel plate, 522-a second steel plate and 523-a first bolt hole.

Detailed Description

The technical solutions of the present invention are explained in detail below with reference to specific embodiments, and many specific details are set forth in the following description to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.

Referring to fig. 1 to 4, the utility model provides a two-circuit one-span GIS wire outlet framework, which comprises a first framework column 1, a second framework column 2 and a cross rod 3, wherein the top of the second framework column 2 is connected with the rod body of the first framework column 1 through the cross rod 3, the tops of the first framework columns 1 are connected with an upper framework beam 5, and the tops of the second framework columns 2 are connected with a middle framework beam 6; the rod bodies of the upper-layer framework beam 5 and the middle-layer framework beam 6 are respectively connected with a plurality of cantilever framework beams 7.

The lower-layer framework beams 8 are connected to the same rod body positions of the second framework columns 2, the lower-layer framework beams 8 are arranged in parallel with the middle-layer framework beams 6, namely the lower-layer framework beams 8 and the middle-layer framework beams 6 are positioned on the same vertical section on the section of the second framework columns 2 in the axial direction; therefore, on the premise that the cantilever beam 7 is not arranged, the safe electrical distance between the down lead and the whole main framework does not meet the electrical requirements, the cantilever beam 7 is arranged, the down lead is arranged at the end part of the free extending end of the cantilever beam 7, so that the safe electrical distance between the down lead and the framework column in the space is kept, in 110KV, the safe distance between the down lead and the first framework column 1 and the safe distance between the down lead and the second framework column are 2m, the length of the cantilever beam 7 in 110KV is set to be 2m, and when the voltage is other voltages such as 220KV, the length of the cantilever beam 7 can be set according to the electrical safety distance. Meanwhile, by arranging the cantilever beam 7, the transverse width of the framework beam is reduced, and the construction difficulty is reduced.

An end support 4 is arranged in the end part of the whole outgoing line framework, and the end support 4 is fixedly connected with the first framework column 1 and the second framework column 2 respectively so as to fix the stability of the whole outgoing line framework; except that herringbone columns are adopted at two ends of the first frame column and the second frame column, independent outlet columns are adopted in the middle of the first frame column and the second frame column, the cross sections of the columns are all of round steel tube structures, the cross section of the ground wire column is the same as that of the frame column, and the lightning rod is of a variable cross section round steel tube structure; the framework is respectively provided with upper, middle and lower equal framework beams at the height positions of 7m, 10m and 13.5m, the cross sections of the framework beams are all single steel tube structures, the structural style is simple, and the stress is reasonable. Taking the scale of a 16-span wire as an example, the span is 9m, the total span is 8, 2 end supports 4 are added, the transverse dimension (vertical direction to a down conductor) of the framework is 81m, and the occupied area is reduced by about 40 percent compared with the conventional framework.

The upper-stage framework beam 5 and the middle-stage framework beam 6 have the same structure at the joint with the cantilever beam 7, and the connection structure of the upper-stage framework beam 5 and the cantilever beam 7 will be described in detail below.

As shown in fig. 1 and 2, the fixed ends of the cantilever beams 7 are vertically and fixedly connected with the rod body of the upper-layer framework beam 5, and the extending ends are freely extended. And a vertical fixing mode is adopted, so that the stability of fixing is improved.

As shown in fig. 2, the upper-layer framework beam 5 includes a plurality of sub-framework beams 51 and a connecting mechanism 52, the plurality of sub-framework beams 51 are connected by the connecting mechanism 52, and the fixed end of the cantilever beam 7 is fixed with the connecting mechanism 52; the connection mechanism 52 connects the plurality of sub-frame beams 51 in series in the axial direction to form an upper frame beam.

The connecting mechanism 52 comprises a first steel plate 521 and a second steel plate 522, the connecting end portion of the sub-frame beam 51 is fixedly connected with the first steel plate 521, the two first steel plates 521 are fixedly connected through the second steel plate 522, and the fixed end of the cantilever beam 7 is fixedly connected with the second steel plate 522. The first steel plate 521 and the connected sub-frame beam 51 may be fixedly connected by welding, bolting, etc., and the first steel plate 521 and the second steel plate 522 may be directly welded when installed on site, or detachably connected by bolting. The cantilever beam is generally 1-4m, preferably 2m, taking full account of the safe clear distance between the electrical professional down conductors.

The second steel plate 522 is an X-shaped steel plate, the fixed end of the cantilever beam 7 is provided with a plurality of third steel plates 71, the second steel plate 522 is provided with a plurality of first bolt holes 523, the third steel plate 71 is provided with a plurality of second bolt holes 72, and the second steel plate 522 and the third steel plates 71 are fixedly connected through bolts; the first bolt hole 523 is formed at the intersection of the adjacent X-shaped steel plate.

The third steel plates 71 are annularly arranged at the end parts of the cantilever frame beams 7 at equal angles, a space is enclosed in the middle, after the third steel plates 71 are inserted into the second steel plates 522, the middle intersection of the X-shaped steel plates is just arranged in the enclosed space, each second steel plate 522 is attached to one surface of the third steel plate 71, the first bolt holes 523 are just communicated with the second bolt holes 72, the third steel plates are fixed on the second steel plates by penetrating through the communicated bolt holes through bolts, and finally the vertical fixed connection of the cantilever frame beams 7 and the upper-layer truss beams 5 is realized; the X-shaped fixing mode improves the fixing stability of the cantilever beam 7 and facilitates installation and maintenance.

As shown in fig. 3 and 4, the wire-outgoing mode in the structure of the present application is; A. b, C three-phase lead is respectively led out through the upper-layer framework beam 5, the middle-layer framework beam 6 and the lower-layer framework beam 8 and is connected with the power transmission tower, a first insulator string is arranged at the joint of the down lead and the framework beam, and a second insulator string is arranged at the joint of the down lead and the cantilever framework beam 7. A. And B, two phases of wires are led out from the GIS equipment sleeve and are respectively connected with the first insulator strings below the cantilever ends of the upper-layer framework beam 5 and the middle-layer framework beam 6, finally, the arc-shaped vertical wires are used for connecting the down-lead wires with the wires led out from the GIS sleeve, and the lower-layer framework beam 8 is directly connected with the down-lead wires and the wires led out from the GIS sleeve by the arc-shaped vertical wires. The distance between different down leads is 4m, and the distance between the down leads and the framework column is 2.5 m. The vertical space is reasonably utilized in the three-phase vertical outgoing line mode, the floor area of the 110kV power distribution device is greatly reduced, the reduction degree is about 40%, the steel consumption is reduced by about 30%, the construction difficulty is reduced, and the construction period is shortened.

The working process is as follows: build first framework post 1 and second framework post 2 through horizontal pole 3 and end brace 4, then build upper strata framework roof beam 5, middle level framework roof beam 6 and lower floor framework roof beam 8, when building upper strata framework roof beam 5, middle level framework roof beam 6, at first with a plurality of sub-framework roof beams 51 through first steel sheet 521 and second steel sheet 522 fixed connection, then insert cantilever frame roof beam 7's stiff end in the second steel sheet 522 for a surface laminating in every second steel sheet 522 and the third steel sheet 71, first bolt hole 523 just in time communicates with second bolt hole 72, be fixed in the second steel sheet through the bolt with the third steel sheet on, finally realize the perpendicular fixed connection of a plurality of cantilever frame roof beams 7 and upper strata framework roof beam 5. The whole framework adopts a circular steel tube structure, the design is simple, in a transformer substation with a 110kV voltage level, a single steel tube beam is easier to meet the verification of an electrical distance than a triangular lattice beam due to the small cross section, and the safety margin is higher than that of the triangular lattice beam. And the scheme of constructing the herringbone columns and the single steel pipe beams effectively reduces the number of welding and bolt connection, and has great advantages in the aspects of construction period and construction difficulty.

According to the structural stress characteristics, each layer of framework beam mainly bears the tension and pressure of the lead under the working conditions of strong wind, ice coating, installation and maintenance, each framework column mainly bears the tension and bending moment transmitted by each layer of framework beam at a node, the framework column at the outgoing line side is mainly stressed, the framework column at the side close to the bus is mainly stressed, the structure is simple, and the stress is clear and reasonable.

In the application, the main material of each framework column is Q345B steel with the diameter of phi 245 × 8, the main material of the upper-layer framework beam and the middle-layer framework beam is Q345B steel with the diameter of phi 245 × 8, the main material of the lower-layer framework beam is Q345B steel with the diameter of phi 180 × 8, and the support cross sections in the framework plane are mainly phi 180 × 8, phi 121 × 6 and phi 70 × 6.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A GIS outgoing line framework with two loops and one span comprises first framework columns (1), second framework columns (2) and a cross rod (3), wherein the tops of the second framework columns (2) are connected with rod bodies of the first framework columns (1) through the cross rod (3), and the GIS outgoing line framework is characterized in that the tops of a plurality of first framework columns (1) are connected with upper-layer framework beams (5), and the tops of a plurality of second framework columns (2) are connected with middle-layer framework beams (6);

the rod bodies of the upper-layer framework beam (5) and the middle-layer framework beam (6) are respectively connected with a plurality of cantilever framework beams (7).

2. The two-circuit one-span GIS outgoing line framework as claimed in claim 1, wherein fixed ends of a plurality of cantilever beam (7) are vertically and fixedly connected with the rod body of the upper-layer framework beam (5), and the extending ends are freely extended.

3. The two-circuit one-span GIS outgoing line framework is characterized in that the upper-layer framework beam (5) comprises a plurality of sub-framework beams (51) and a connecting mechanism (52), the sub-framework beams (51) are connected through the connecting mechanism (52), and the fixed end of the cantilever framework beam (7) is fixed with the connecting mechanism (52).

4. The two-circuit one-span GIS outgoing line framework is characterized in that the connecting mechanism (52) comprises a first steel plate (521) and a second steel plate (522), the connecting end portion of the sub-framework beam (51) is fixedly connected with the first steel plate (521), the two first steel plates (521) are fixedly connected through the second steel plate (522), and the fixed end of the cantilever framework beam (7) is fixedly connected with the second steel plate (522).

5. The two-circuit one-span GIS outgoing line framework is characterized in that the second steel plate (522) is an X-shaped steel plate, a plurality of third steel plates (71) are arranged at the fixed end of the cantilever beam (7), and the third steel plates (71) are inserted into the second steel plate (522) to be fixedly connected.

6. The GIS outlet frame with two loops and one span according to claim 5, wherein the second steel plate (522) is provided with a plurality of first bolt holes (523), the third steel plate (71) is provided with a plurality of second bolt holes (72), and the second steel plate (522) and the third steel plate (71) are fixedly connected through bolts.

7. The GIS outgoing line frame with two loops and one span as claimed in any one of claims 1 to 6, wherein the lower layer frame beam (8) is connected to the same rod body position of the second frame columns (2), and the lower layer frame beam (8) and the middle layer frame beam (6) are arranged in parallel.

8. The GIS outgoing line framework of two-circuit one-span according to any one of claims 1 to 6, characterized in that three-phase outgoing lines are respectively carried out through an upper-layer framework beam (5), a middle-layer framework beam (6) and a lower-layer framework beam (8), the down-lead line is provided with a first insulator string at the joint of the down-lead line and the upper-layer framework beam (5) and the middle-layer framework beam (6), and the down-lead line is provided with a second insulator string at the joint of the down-lead line and the cantilever framework beam (7).