Support-end-free outgoing line framework for 330kV transformer substation

Abstract

The utility model discloses a support-end-free outgoing line framework for a 330kV transformer substation, which belongs to the technical field of 330kV transformer substation frameworks and comprises a rigid shearing force support column, a plurality of herringbone column frameworks are arranged on two sides of the rigid shearing force support column at equal intervals, a framework cross beam assembly is connected between every two adjacent extension fixing blocks, and the framework cross beam assembly is connected with the rigid shearing force support column. The framework cross beam assembly comprises a cross beam rod which is transversely arranged, the two ends of the cross beam rod penetrate through the extending fixing blocks and extend to the outer sides of the extending fixing blocks, and buffering protection assemblies for the herringbone column framework to resist tension of wires, wind loads and destructive force of the earthquake action are arranged on the two sides of each extending fixing block and located on the peripheral side of the cross beam rod. A buffer supporting assembly is further arranged between the lower portions of the herringbone column frameworks. According to the utility model, the stability and bearing capacity of the whole framework are enhanced, and the influence of external forces such as wire tension, wind load and earthquake on the transformer substation can be effectively resisted, so that the safety of the transformer substation is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of 330kV substation structure, and in particular, it is a supportless end-outgoing line structure for 330kV substations. Background Technology

[0002] In modern power systems, 330kV substations serve as critical nodes, undertaking the important tasks of power transmission and distribution. To ensure the safe and stable operation of these substations, especially in the face of extreme weather conditions (such as strong winds and blizzards) and natural disasters (such as earthquakes), the design of unsupported end-feeder structures is particularly important. However, existing unsupported end-feeder structures have some shortcomings that limit their performance and reliability.

[0003] First, in traditional designs, the connection between rigid shear braces and beam assemblies often relies on simple welding or bolting. While this method can meet basic structural requirements, it is prone to loosening or even breakage at connection points when faced with extreme external forces (such as conductor tension, wind loads, and seismic action). This makes the overall structure susceptible to deformation or even damage when subjected to external forces (e.g., conductor tension, wind loads, and seismic action). This connection method cannot effectively distribute external forces, increasing the risk to the entire system. Second, existing buffering mechanisms are often insufficient to withstand high-intensity impacts. Due to the lack of effective buffering devices, when encountering strong vibrations or instantaneous high loads, the forces directly transmitted to the supporting structure may lead to material fatigue or permanent damage, affecting the long-term use of the equipment. Furthermore, traditional A-frame designs fail to adequately consider how to improve the seismic performance of the substructure. In most cases, only the superstructure is relied upon to absorb vibration energy, while the importance of the substructure is ignored, which weakens the overall stability of the entire frame to some extent. Utility Model Content

[0004] The purpose of this invention is to provide a supportless outgoing line structure for 330kV substations to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a supportless outgoing line frame for a 330kV substation, comprising rigid shear support columns, with multiple A-frame columns arranged equidistantly on both sides of the rigid shear support columns, each A-frame column and the top of the rigid shear support column having an extension fixing block extending upwards, and a frame beam assembly connecting adjacent extension fixing blocks, the frame beam assembly including a transversely arranged beam rod, both ends of the beam rod penetrating the extension fixing block and extending to the outside of the extension fixing block, and buffer protection components for the A-frame column to resist conductor tension, wind load and seismic damage on both sides of each extension fixing block and around the beam rod, and buffer support components between the lower parts of each A-frame column.

[0006] In this preferred embodiment, the supporting horizontal axis is fixed between the lower parts of each herringbone column frame, and the supporting horizontal axis is located below the buffer support assembly.

[0007] In a preferred embodiment of this scheme, the buffer protection assembly includes a first limiting plate symmetrically welded to the inner sides of both ends of each crossbeam, buffer springs respectively sleeved on both ends of the crossbeam, a fixed tail plate welded to the outer walls of both ends of the crossbeam, and a hydraulic buffer damper fixed to the upper part of the inner wall of each fixed tail plate.

[0008] In this preferred embodiment, one end of each buffer spring elastically abuts against the inner wall of the first limiting disc, while the other end elastically abuts against the outer wall of one side of the extension fixing block.

[0009] In this preferred embodiment, the end of each hydraulic buffer damper furthest from the fixed tail plate elastically abuts against the outer wall of the other side of the extended fixed block.

[0010] In this preferred embodiment, the adjacent hydraulic buffer dampers and buffer springs are all abutted against the extension fixing block, so that the crossbeam has buffer protection against the tension of the conductor, wind load and seismic action on both sides of the extension fixing block.

[0011] In this preferred embodiment, when the beginning and end of two adjacent crossbeams both pass through the same extension fixing block, the two crossbeams are arranged symmetrically from top to bottom.

[0012] In this preferred embodiment, the buffer support assembly includes two support extension rods symmetrically welded to the inner walls of both sides of the herringbone column frame, and a buffer double-headed hollow sleeve sleeved between the opposite ends of the two support extension rods.

[0013] In a preferred embodiment, a partition is integrally formed in the middle of the inner cavity of the buffer double-headed hollow sleeve. The partition symmetrically divides the inner cavity of the buffer double-headed hollow sleeve into two separate chambers, and each chamber is provided with an air buffer spring.

[0014] In this preferred embodiment, one end of each of the two support extension rods, which is inserted into an adjacent chamber, is welded with the second limiting disc, and the end of the air buffer spring away from the partition elastically abuts against the outer wall of the second limiting disc.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0016] This unsupported outgoing line frame for 330kV substations enhances the stability and load-bearing capacity of the entire frame by setting A-frame columns on both sides of rigid shear support columns, installing extension fixing blocks at the top of each column, and connecting frame beam assemblies between adjacent extension fixing blocks. It can effectively resist the impact of external forces such as conductor tension, wind load, and earthquakes on the substation, thereby improving its safety.

[0017] Buffer and protective components are installed on both sides of each extension fixing block to resist the destructive forces of conductor tension, wind load, and seismic action. These components can effectively absorb and disperse external forces, reduce the damage caused by direct impacts to the structure, and extend the service life of the equipment.

[0018] The design of the crossbeam extending through the fixing block not only simplifies the assembly process but also increases the stability of the connection points. Furthermore, the symmetrical arrangement further enhances the overall structural balance and stability, ensuring good performance even under extreme weather conditions.

[0019] The buffer support assembly installed at the bottom of the A-frame structure includes a support extension rod and a double-ended hollow sleeve containing an air-cushioned spring. This design provides additional shock absorption protection during earthquakes, reducing the risk of damage to substation infrastructure from vibrations. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the herringbone column frame of this utility model;

[0023] Figure 3 This utility model Figure 1Enlarged structural diagram at point A;

[0024] Figure 4 This utility model Figure 1 Enlarged structural diagram at point B;

[0025] Figure 5 This is a schematic diagram of the connection structure of the buffer double-headed hollow sleeve of this utility model;

[0026] Figure 6 This is a schematic diagram of the disassembled structure of the buffer support component of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] In the diagram: 1. Rigid shear strut; 2. Frame beam assembly; 3. A-frame structure; 4. Horizontal beam; 5. Extension fixing block; 6. Supporting horizontal axis; 7. Buffer double-headed hollow sleeve; 8. Buffer support assembly; 9. First limiting plate; 10. Buffer spring; 11. Fixed tail plate; 12. Hydraulic buffer damper; 13. Support extension rod; 14. Removable end cap; 15. External threaded pipe; 16. Second limiting plate; 17. Air buffer spring. Detailed Implementation

[0029] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0030] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0031] This embodiment provides, for example Figures 1 to 6The diagram shows a supportless outgoing line frame for a 330kV substation, comprising rigid shear support columns 1. Multiple A-frame columns 3 are equidistantly arranged on both sides of the rigid shear support columns 1. Each A-frame column 3 and the top of the rigid shear support column 1 is connected to an extension fixing block 5 extending upwards. A frame beam assembly 2 connects adjacent extension fixing blocks 5. The frame beam assembly 2 includes a transversely arranged beam 4, with both ends of the beam 4 penetrating the extension fixing blocks 5 and extending to the outside of the extension fixing blocks 5. Buffer protection components are provided on both sides of each extension fixing block 5 and around the beam 4 to protect the A-frame column 3 from conductor tension, wind load, and seismic damage. A buffer support assembly 8 is also provided between the lower parts of each A-frame column 3, and a support transverse axis 6 is fixed between the lower parts of each A-frame column 3, located below the buffer support assembly 8.

[0032] In this embodiment, the buffer protection assembly includes a first limiting plate 9 symmetrically welded to the inner sides of both ends of each crossbeam 4, buffer springs 10 respectively sleeved on both ends of the crossbeam 4, a fixed tail plate 11 welded to the outer walls of both ends of the crossbeam 4, and a hydraulic buffer damper 12 fixed to the upper part of the inner wall of each fixed tail plate 11. One end of each buffer spring 10 elastically abuts against the inner wall of the first limiting plate 9, while the other end elastically abuts against the outer wall of one side of the extended fixing block 5.

[0033] In this embodiment, the end of each hydraulic damper 12 away from the fixed tail plate 11 elastically abuts against the outer wall of the other side of the extension fixed block 5. Adjacent hydraulic dampers 12 and buffer springs 10 abut against the extension fixed block 5, so that the crossbeam rod 4 has buffer protection against the tension of the conductor, wind load and earthquake damage on both sides of the extension fixed block 5. When the beginning and end of two adjacent crossbeam rods 4 pass through the same extension fixed block 5, the two crossbeam rods 4 are arranged symmetrically from top to bottom.

[0034] In this embodiment, the buffer support assembly 8 includes two support extension rods 13 symmetrically welded to the inner walls of both sides of the herringbone column frame 3, and a buffer double-headed hollow sleeve 7 sleeved between the opposite ends of the two support extension rods 13. A partition is integrally formed in the middle of the inner cavity of the buffer double-headed hollow sleeve 7. The partition divides the inner cavity of the buffer double-headed hollow sleeve 7 symmetrically into two separate chambers, and each chamber is provided with an air buffer spring 17.

[0035] In this embodiment, each of the two support extension rods 13 is inserted into an adjacent chamber, and a second limiting plate 16 is welded to one end of each rod. The end of the air buffer spring 17 away from the partition elastically abuts against the outer wall of the second limiting plate 16. Both ends of the buffer double-headed hollow sleeve 7 are integrally formed with external threaded tubes 15, and each support extension rod 13 is fitted with a detachable end cap 14 that is threaded to the external threaded tube 15. The design of the two air buffer springs 17 enables the support extension rods 13 on both sides of the buffer double-headed hollow sleeve 7 to be buffered and damped. The two support extension rods 13 are welded to the inner walls of both sides of the herringbone column frame 3, so that the two air buffer springs 17 can resist the tension of the conductor, wind load, and seismic damage to the lower part of the herringbone column frame 3. The buffer protection component can resist the tension of the conductor, wind load, and seismic damage to the upper part of the herringbone column frame 3.

[0036] Working principle:

[0037] This unsupported outgoing line frame for a 330kV substation uses rigid shear struts 1 as the foundation support points. Multiple A-frame frames 3 are symmetrically arranged on both sides of the rigid shear struts 1, with these struts spaced equidistantly on either side. The top of each rigid shear strut 1 and each A-frame frame 3 extends upwards to form an extension fixing block 5. Adjacent extension fixing blocks 5 are connected by frame beam assemblies 2, with beams 4 passing through the extension fixing blocks 5 and extending outwards. Buffer protection components are installed on both sides of each extension fixing block 5 and around the beams 4 to resist the effects of conductor tension, wind loads, and seismic forces.

[0038] A buffer support assembly 8 is provided between the lower parts of the herringbone column frame 3. The assembly consists of a support extension rod 13 and a buffer double-headed hollow sleeve 7, the latter of which is equipped with an air buffer spring 17 to provide additional shock absorption.

[0039] When encountering external forces such as wind loads or earthquakes, the frame beam assembly 2 and the buffer protection assembly first absorb and disperse these forces. At the same time, the air buffer spring 17 in the buffer support assembly 8 also plays a crucial role in shock absorption, converting vibration energy into heat energy and dissipating it, thereby protecting the safety of the overall structure.

[0040] For ease of maintenance and adjustment, the design of the integrally formed external threaded tubes 15 at both ends of the buffer double-ended hollow sleeve 7 combined with the removable end caps 14 allows for convenient disassembly and replacement of internal parts.

[0041] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A supportless outgoing line frame for a 330kV substation, comprising rigid shear struts (1), characterized in that: Multiple herringbone columns (3) are arranged equidistantly on both sides of the rigid shear support column (1). Each herringbone column (3) and the top of the rigid shear support column (1) are connected to an extension fixing block (5). A frame beam assembly (2) is connected between two adjacent extension fixing blocks (5). The frame beam assembly (2) includes a horizontally arranged beam rod (4). The two ends of the beam rod (4) pass through the extension fixing block (5) and extend to the outside of the extension fixing block (5). Each extension fixing block (5) is provided with a buffer protection component on both sides and around the beam rod (4) to resist the tension of the conductor, wind load and seismic damage. A buffer support assembly (8) is also provided between the lower parts of each herringbone column (3).

2. The supportless outgoing line frame for a 330kV substation according to claim 1, characterized in that: A support cross axis (6) is fixed between the lower parts of each herringbone column frame (3), and the support cross axis (6) is located below the buffer support assembly (8).

3. A supportless outgoing line frame for a 330kV substation according to claim 2, characterized in that: The buffer protection assembly includes a first limiting plate (9) symmetrically welded to the inner sides of both ends of each crossbeam (4), buffer springs (10) respectively sleeved on both ends of the crossbeam (4), fixed tail plates (11) welded to the outer walls of both ends of the crossbeam (4), and hydraulic buffer dampers (12) fixed to the upper part of the inner wall of each fixed tail plate (11).

4. A supportless outgoing line frame for a 330kV substation according to claim 3, characterized in that: One end of each of the buffer springs (10) elastically abuts against the inner wall of the first limiting plate (9), while the other end elastically abuts against the outer wall of one side of the extension fixing block (5).

5. A supportless outgoing line frame for a 330kV substation according to claim 4, characterized in that: Each of the hydraulic dampers (12) has one end away from the fixed tail plate (11) elastically abutting against the outer wall of the other side of the extension fixed block (5).

6. A supportless outgoing line frame for a 330kV substation according to claim 5, characterized in that: The adjacent hydraulic buffer dampers (12) and buffer springs (10) are all in contact with the extension fixing block (5), so that the crossbeam rod (4) has a buffering and protective force against the tension of the conductor, wind load and seismic action on both sides of the extension fixing block (5).

7. A supportless outgoing line frame for a 330kV substation according to claim 6, characterized in that: When the beginning and end of two adjacent crossbeams (4) are both connected to the same extension fixing block (5), the two crossbeams (4) are arranged symmetrically from top to bottom.

8. A supportless outgoing line frame for a 330kV substation according to claim 7, characterized in that: The buffer support assembly (8) includes two support extension rods (13) symmetrically welded to the inner walls of both sides of the herringbone column frame (3) and a buffer double-headed hollow sleeve (7) sleeved between the opposite ends of the two support extension rods (13).

9. A supportless outgoing line frame for a 330kV substation according to claim 8, characterized in that: The inner cavity of the buffer double-headed hollow sleeve (7) is integrally formed with a partition plate in the middle position. The partition plate symmetrically divides the inner cavity of the buffer double-headed hollow sleeve (7) into two separate chambers, and each chamber is provided with an air buffer spring (17).

10. A supportless outgoing line frame for a 330kV substation according to claim 9, characterized in that: Both of the support extension rods (13) are inserted into one end of the adjacent chamber and a second limiting plate (16) is welded thereon. The end of the air buffer spring (17) away from the partition is elastically abutted against the outer wall of the second limiting plate (16).

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