500kV transformer substation framework without end support

Abstract

The utility model discloses a 500kV transformer substation framework without an end support, which belongs to the technical field of transformer substation frameworks and comprises a plurality of first frame bodies and second frame bodies, the first frame bodies and the second frame bodies are located on the same straight line and are sequentially and alternately arranged at intervals, each first frame body comprises a herringbone support, and a first stand column and a second stand column are arranged at the lower end of a column top plate. The plane where the first stand column and the second stand column are jointly located is a vertical plane, the first stand column and the second stand column form a herringbone structure, a third stand column is further hinged to the lower end of the column top plate, and the included angle formed by the third stand column and the plane where the first stand column and the second stand column are jointly located is an acute angle. Connecting rib assemblies are arranged among the first stand column, the second stand column and the third stand column. The space occupation between the frameworks can be reduced on the basis of ensuring the stability, the live-line distance is increased, the problem of power failure in the construction period is solved, the connecting rib assemblies can ensure that the first stand column, the second stand column and the third stand column are mutually connected in a reinforced mode, and the stability of the whole framework is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of substation frameworks, in particular to a 500kV substation framework without end braces. Background Art

[0002] In the design of substations, in order to solve the eccentric stress problem of frameworks, end braces are generally provided for frameworks. Among them, for 500kV frameworks, the bottom root opening of the end braces reaches 6 - 7 meters, occupying a large area.

[0003] When expanding in an existing 500kV substation, if new frameworks are added, the end braces will extend into adjacent intervals, causing problems such as insufficient live working distance and power outage during the construction period. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the utility model is: how to improve the problems such as insufficient live working distance and power outage during the construction period caused by adding new frameworks.

[0005] The technical solution adopted by the utility model to solve its technical problem is:

[0006] A 500kV substation framework without end braces, comprising a plurality of first frameworks and second frameworks arranged at intervals and alternately in sequence on the same straight line;

[0007] The first framework includes a herringbone bracket, and the length direction of the bottom end of the first framework is perpendicular to the straight line where the plurality of first frameworks and second frameworks are located;

[0008] The second framework includes a column top plate. A first column and a second column are arranged at the lower end of the column top plate. The plane where the first column and the second column are located together is a vertical plane, and the first column and the second column form a herringbone structure. A third column is also hinged at the lower end of the column top plate. The included angle formed by the third column and the plane where the first column and the second column are located together is an acute angle; a connecting rib assembly is arranged between the first column, the second column and the third column; the projection of the third column on the ground has an included angle with the straight line where the plurality of frameworks are located.

[0009] Furthermore, it further includes a plurality of first reinforcing ribs. The plurality of first reinforcing ribs are evenly distributed on the peripheries of the first column and the second column. The adjacent two ends of each first reinforcing rib are respectively connected to the side walls of the first column or the second column and the lower end of the column top plate.

[0010] Furthermore, a second reinforcing rib is connected between two adjacent first reinforcing ribs, and the upper end of the second reinforcing rib is connected to the lower end of the column top plate.

[0011] Furthermore, a shear plate is provided at the lower end of the top plate, and the upper end of the third column is hinged to the shear plate.

[0012] Furthermore, the upper ends of the first column and the second column are connected by intersection and the connection angle is an acute angle.

[0013] Furthermore, the shear plate is arranged between the first column and the second column, and the upper end of the shear plate is connected to the lower end of the column top plate.

[0014] Furthermore, a plurality of third reinforcing ribs are arranged at intervals in the vertical direction on both sides of the shear plate, and the third reinforcing ribs on both sides of the shear plate are respectively connected to the outer walls of the first column and the second column.

[0015] Furthermore, the connecting rib assembly includes a plurality of triangular connecting frames arranged at intervals in the vertical direction, and the three vertices of the connecting frame are respectively connected to the first column, the second column and the third column.

[0016] Furthermore, the included angle between the projection of the third column on the ground and the straight line where the plurality of frameworks are located is 90°.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) The projection of the third column as an inclined support column on the ground and the straight line where the plurality of frameworks are located have an included angle, that is, it is not arranged on the connection line between two adjacent first frameworks, which can ensure to increase the actual space between two adjacent first frameworks and improve the live working distance.

[0019] (2) By forming a triangular pyramid-shaped framework body with the first column, the second column and the third column, the stability of the whole framework is ensured. Moreover, the end support structure is cancelled, which can ensure to reduce the space occupation between the frameworks on the basis of ensuring stability, further improve the live working distance, improve the problem of power outage during the construction period, and the connecting rib assembly can ensure the mutual strengthening connection of the first column, the second column and the third column, further improving the stability of the whole framework. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the installation position of the framework of the present utility model;

[0021] Figure 2 is a front view schematic diagram of the framework of the present utility model;

[0022] Figure 3 is a left view schematic diagram of the framework of the present utility model;

[0023] Figure 4 is a front view of the installation structure of the column top plate of the present utility model;

[0024] Figure 5 It is the left view of the column top plate installation structure of the present utility model;

[0025] Figure 6 It is the top view of the column top plate installation structure of the present utility model;

[0026] In the figure, the markings are: 1 - the first column, 2 - the second column, 3 - the column top plate, 4 - the third column, 5 - the connecting rib assembly, 6 - the first reinforcing rib, 7 - the shear plate, 8 - the second reinforcing rib, 9 - the third reinforcing rib, 100 - the first framework. Specific embodiments

[0027] The present utility model will be further described below with reference to the accompanying drawings.

[0028] According to Figure 1 、 2 As shown, an end - support - free 500 kV substation framework is proposed in an embodiment of the present application, which includes a plurality of first frameworks 100 and second frameworks arranged at intervals and alternately in a straight line. The reasonable arrangement of the whole framework can be ensured by the alternating arrangement of the first framework and the second framework;

[0029] The first framework 100 includes a herringbone support. The length direction of the bottom end of the first framework 100 is perpendicular to the straight line where the plurality of first frameworks 100 and the second frameworks are located. The first framework plays a role in supporting the overall transmission line along the line;

[0030] The second framework includes a column top plate 3. The first column 1 and the second column 2 are arranged at the lower end of the column top plate 3. The plane where the first column 1 and the second column 2 are located is a vertical plane, and the first column 1 and the second column 2 form a herringbone structure, that is, an A - shaped structure, and the formed plane is perpendicular to the incoming - outgoing line direction. The third column 4 is also hinged at the lower end of the column top plate 3. The included angle formed by the third column 4 and the plane where the first column 1 and the second column 2 are located is an acute angle, which only bears axial force and does not bear bending moment. A connecting rib assembly 5 is arranged between the first column 1, the second column 2 and the third column 4. The projection of the third column 4 as an inclined support column on the ground has an included angle with the straight line where the plurality of first frameworks 100 and the second frameworks are located, that is, it is not on the connection line between two adjacent first frameworks 100, which can ensure an increase in the actual space between two adjacent frameworks and improve the live - working distance. The included angle between the projection of the third column 4 on the ground and the straight line where the plurality of first frameworks 100 and the second frameworks are located is 90°, that is, the projections of the third columns 4 of the plurality of first frameworks 100 and the second frameworks on the ground are all perpendicular to the straight line where the plurality of frameworks are located, maximizing the space distance between two adjacent frameworks.

[0031] First of all, it should be stated that a triangular pyramid-shaped framework is formed by the first column 1, the second column 2 and the third column 4 to ensure the stability of the entire framework. Moreover, the end support structure is cancelled, which can reduce the space occupied between the frameworks on the basis of ensuring stability, increase the live working distance, and improve the problem of power outage during the construction period. In addition, the connecting rib assembly 5 can ensure the mutual strengthening connection of the first column 1, the second column 2 and the third column 4, and further improve the stability of the entire framework.

[0032] The upper end of the above-mentioned first column 1 and the upper end of the above-mentioned second column 2 are connected by intersection and the connection angle is an acute angle. The connection method of intersection welding ensures that the angle between the first column 1 and the second column 2 will not change randomly.

[0033] Specifically, according to Figures 3 - 5 As shown, it also includes a plurality of first reinforcing ribs 6. The plurality of the first reinforcing ribs 6 are evenly distributed on the circumferences of the first column 1 and the second column 2. The adjacent two ends of the first reinforcing rib 6 are respectively connected to the side wall of the first column 1 or the second column 2 and the lower end of the column top plate 3. Through the first reinforcing rib 6, the connection stability between the column top plate 3 and the first column 1 and the second column 2 can be ensured, and the overall compressive stiffness can be guaranteed. The first reinforcing rib 6 can be a triangular plate and is vertically arranged. The adjacent two sides of the triangular plate are respectively connected to the outer wall of the first column 1 or the second column 2 and the bottom end of the column top plate 3. In order to ensure the appearance, the edge of the first reinforcing rib 6 does not exceed the outer edge of the column top plate 3.

[0034] In order to further improve the stability, a second reinforcing rib 8 is connected between two adjacent first reinforcing ribs 6. The upper end of the second reinforcing rib 8 is connected to the lower end of the column top plate 3. That is, the second reinforcing rib 8 is also a rectangular plate and the left and right ends are respectively connected to the surfaces of two adjacent first reinforcing ribs 6. The upper end of the second reinforcing rib 8 is connected to the lower end of the column top plate 3, so as to further ensure the connection stability between the column top plate 3, the first column 1 and the second column 2.

[0035] A shear plate 7 is also provided at the lower end of the above-mentioned top plate. The upper end of the third column 4 is hinged to the shear plate 7, which can conveniently adjust the angle between the third column 4 and the plane formed by the first column 1 and the second column 2. Moreover, the shear plate 7 is arranged between the first column 1 and the second column 2, and the upper end of the shear plate 7 is connected to the lower end of the column top plate 3. In this way, it can be ensured that the third column 4 is located at the connection center position between the first column 1 and the second column 2, and a better center position can be guaranteed.

[0036] Moreover, a plurality of third reinforcing ribs 9 are arranged at intervals on both sides of the shear plate 7 in the vertical direction. The third reinforcing ribs 9 on both sides of the shear plate 7 are respectively connected to the outer walls of the first upright column 1 and the second upright column 2, so as to ensure the connection strength and structural integrity of the shear plate 7.

[0037] The connecting rib assembly 5 includes a plurality of triangular connecting frames arranged at intervals in the vertical direction. The three vertices of the connecting frame are respectively connected to the first upright column 1, the second upright column 2 and the third upright column 4, ensuring the connection stability between the upright columns and the integrity of the entire structure.

[0038] To meet the requirements of electric power prefabricated construction, flange plates are provided at the column feet of the first upright column 1, the second upright column 2 and the third upright column 4, and are connected to the foundation by anchor bolts. In this embodiment, the column feet of the first upright column 1, the second upright column 2 and the third upright column 4 all adopt straight-seam welded circular steel pipes, and different specifications and sizes can be selected according to different voltage levels and different stress states to meet the engineering needs, with wide applicability.

[0039] In summary, the present utility model provides a 500 kV substation framework without end braces, which includes a plurality of first frameworks 100 and second frameworks arranged alternately at intervals in sequence on the same straight line; the first framework 100 includes a herringbone bracket, and the length direction of the bottom end of the first framework 100 is perpendicular to the straight line where the plurality of first frameworks 100 and the second frameworks are located; the second framework includes a column top plate 3, a first upright column 1 and a second upright column 2 are arranged below the column top plate 3, the plane where the first upright column 1 and the second upright column 2 are located together is a vertical plane, and the first upright column 1 and the second upright column 2 form a herringbone structure. A third upright column 4 is also hinged below the column top plate 3, and the included angle formed by the third upright column 4 and the plane where the first upright column 1 and the second upright column 2 are located together is an acute angle; a connecting rib assembly 5 is arranged between the first upright column 1, the second upright column 2 and the third upright column 4. Compared with the prior art, the existing conventional substation framework uses end braces at both ends in the length direction, which has high requirements for the length direction of the site; as the available land is decreasing day by day, many expansion projects can only be implemented within the original site range; the present utility model cancels the end braces in the length direction and sets a third upright column 4 parallel to the incoming and outgoing line direction in the middle of the framework, making clever use of the site width, reducing the occupation of the length direction of the site, and effectively solving the problem of insufficient live working distance. It has both safety and economic benefits.

Claims

1. An endless-brace 500 kV substation framework, characterized in that, It includes a plurality of first frameworks (100) and second frameworks which are arranged alternately at intervals in a straight line in sequence; The first framework (100) includes a herringbone bracket, and the length direction of the bottom end of the first framework (100) is perpendicular to the straight line where the plurality of first frameworks (100) and the second frameworks are located; The second framework includes a column top plate (3). A first column (1) and a second column (2) are arranged at the lower end of the column top plate (3). The plane where the first column (1) and the second column (2) are located together is a vertical plane, and the first column (1) and the second column (2) form a herringbone structure. A third column (4) is also hinged at the lower end of the column top plate (3). The included angle formed by the third column (4) and the plane where the first column (1) and the second column (2) are located together is an acute angle; A connecting rib assembly (5) is arranged between the first column (1), the second column (2) and the third column (4); There is an included angle between the projection of the third column (4) on the ground and the straight line where the plurality of first frameworks (100) and the second frameworks are located.

2. The 500 kV substation framework without end braces according to claim 1, characterized in that, It also includes a plurality of first reinforcing ribs (6), and the plurality of first reinforcing ribs (6) are evenly distributed on the peripheries of the first column (1) and the second column (2). The adjacent two ends of the first reinforcing rib (6) are respectively connected to the side wall of the first column (1) or the second column (2) and the lower end of the column top plate (3).

3. The 500 kV substation framework without end braces according to claim 2, characterized in that, A second reinforcing rib (8) is connected between two adjacent first reinforcing ribs (6), and the upper end of the second reinforcing rib (8) is connected to the lower end of the column top plate (3).

4. A 500 kV substation framework without end braces according to claim 1, characterized in that, A shear plate (7) is arranged at the lower end of the top plate, and the upper end of the third column (4) is hinged to the shear plate (7).

5. A 500 kV substation framework without end struts according to claim 4, characterized in that, The upper ends of the first column (1) and the second column (2) are connected by intersection, and the connection included angle is an acute angle.

6. A 500 kV substation framework without end braces according to claim 5, characterized in that, The shear plate (7) is arranged between the first column (1) and the second column (2), and the upper end of the shear plate (7) is connected to the lower end of the column top plate (3).

7. A 500 kV substation framework without end braces according to claim 5, characterized in that, A plurality of third reinforcing ribs (9) are arranged at intervals in the vertical direction on both sides of the shear plate (7), and the third reinforcing ribs (9) on both sides of the shear plate (7) are respectively connected to the outer wall of the first column (1) and the outer wall of the second column (2).

8. A 500 kV substation framework without end braces according to claim 1, characterized in that, The connecting rib assembly (5) includes a plurality of triangular connecting frames which are arranged at intervals in the vertical direction. The three vertices of the connecting frame are respectively connected to the first column (1), the second column (2) and the third column (4).

9. The 500 kV substation framework without end struts according to claim 1, characterized in that, The included angle between the projection of the third column (4) on the ground and the straight line where the plurality of first frameworks and the second frameworks are located is 90°.

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