Large-scale suspension opening split type shielding case for extra-high voltage isolation switch

Abstract

The utility model discloses a large-scale suspension opening split type shielding case for an extra-high voltage isolation switch, and relates to the technical field of shielding cases. Comprising a top structure, a second side wall structure is inserted into the outer wall of the bottom of the top structure, a first side wall structure is in lap joint with the outer wall of the second side wall structure, a bottom structure is inserted into the outer wall of the bottom of the first side wall structure, and a splicing plate is arranged below the top structure; compared with an integral structure, the split-type plug-in splicing design is adopted, so that transportation is more convenient, the parts are matched in a plug-in mode during installation, the installation difficulty is reduced, stable connection between the parts of the shielding case is ensured by using a dual fixing mode of a plug-in structure and bolt fastening, the design simplifies the assembly process, and the assembly efficiency is improved. And the problem of non-uniform electric field distribution caused by looseness in an extra-high voltage environment can be effectively avoided.

Description

A large suspended perforated split-type shielding cover for ultra-high voltage disconnect switches Technical Field

[0001] This utility model relates to the field of shielding technology, specifically a large suspended perforated split shielding cover for ultra-high voltage disconnect switches. Background Technology

[0002] In ultra-high voltage power transmission and transformation systems, disconnect switches are key equipment for control and protection circuits. Their shielding covers must have good electric field shielding performance to ensure stable operation of the equipment. Traditional large disconnect switch shielding covers mostly adopt an integral structure. Due to their large size and heavy weight, they are prone to structural deformation during transportation due to bumps and collisions, increasing transportation difficulty and cost. Moreover, during installation, the overall hoisting requires large lifting equipment, which places high demands on the installation site and the technical skills of the operators. The installation process is complex and time-consuming, and there are also risks associated with working at height. Existing shielding covers usually use a single bolt fixing method, which is prone to problems such as bolt loosening and component displacement during long-term operation. This leads to uneven electric field distribution in the shielding cover, which not only affects the shielding effect but may also cause partial discharge, threatening the safe operation of the equipment. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a large-scale suspended perforated split-type shielding cover for ultra-high voltage disconnect switches. The split-type plug-in splicing design improves transportation convenience, while the double fixing structure ensures stable installation and thus enhances the shielding stability of the cover under long-term use.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a large suspended open-type split shielding cover for ultra-high voltage disconnecting switches, comprising a top structure, a second side wall structure inserted into the outer wall of the bottom of the top structure, a first side wall structure overlapping the outer wall of the second side wall structure, a bottom structure inserted into the outer wall of the bottom of the first side wall structure, and a splicing plate provided below the top structure;

[0007] Preferably, the first sidewall structure includes a first arc-shaped plate, a first connecting plate fixedly connected to the outer wall of the first arc-shaped plate, a first plug-in cylinder fixedly connected to the outer wall of the first connecting plate, a first insulating pad symmetrically fixedly connected to the outer wall of the first connecting plate, and a first limiting pad symmetrically fixedly connected to the inner wall of the first connecting plate; the second sidewall structure includes a second arc-shaped plate, a second connecting plate fixedly connected to the outer wall of the second arc-shaped plate, a second plug-in cylinder fixedly connected to the outer wall of the second connecting plate, a second insulating pad symmetrically fixedly connected to the outer wall of the second connecting plate, and a second limiting pad symmetrically fixedly connected to the inner wall of the second connecting plate; the splicing plate is fixedly connected to the outer walls of the first arc-shaped plate and the second arc-shaped plate respectively, and the outer walls of the first connecting plate and the second connecting plate overlap. By adopting a split plug-in splicing design, compared with the integral structure, transportation is more convenient. At the same time, the installation difficulty is reduced by the plug-in cooperation of each component during installation, and the insulating pad is used for positioning and installation at the high-voltage disconnector column position, reducing the risk of electric shock during installation.

[0008] Preferably, the top structure includes a suspension shell, a through tube fixedly connected to the inner wall of the suspension shell, a second positioning tube symmetrically fixedly connected to the outer wall of the bottom of the suspension shell, a second insertion block fixedly connected to the outer wall of the bottom of the suspension shell, the outer wall of the bottom of the through tube being inserted into the inner wall of the top of the second insertion tube, the outer wall of the second positioning tube being inserted into the inner wall of the second hollow tube, and the inner wall of the second insertion block being inserted into the outer wall of the first hollow tube.

[0009] Preferably, the bottom structure includes a connecting plate, with a plug tube fixedly connected to the inner wall of the connecting plate, a first positioning tube symmetrically fixedly connected to the outer wall of the top of the connecting plate, a first plug-in block fixedly connected to the outer wall of the top of the connecting plate, the outer wall of the top of the plug tube being plugged into the inner wall of the top of the second plug-in tube, the outer wall of the first positioning tube being plugged into the inner wall of the first hollow tube, and the inner wall of the first plug-in block being plugged into the outer wall of the second hollow tube. By utilizing the dual fixing method of plug-in structure and bolt fastening, a stable connection between the components of the shielding cover is ensured. This design simplifies the assembly process and effectively avoids the problem of uneven electric field distribution caused by loosening under ultra-high voltage environment, thereby improving the shielding performance of the shielding cover.

[0010] (III) Beneficial Effects

[0011] This utility model provides a large-scale, suspended, perforated, split-type shielding cover for ultra-high voltage disconnect switches. It has the following advantages:

[0012] (I) The split shielding cover adopts a split plug-in splicing design, which makes transportation more convenient compared to the integral structure. At the same time, the installation difficulty is reduced by the plug-in cooperation of each component. Furthermore, the insulating pad is used to position the high-voltage disconnect switch column, which reduces the risk of electric shock during installation and ensures the safety of construction personnel.

[0013] (ii) This split-type shielding cover uses a dual fixing method of plug-in structure and bolt fastening to ensure a stable connection between the components of the shielding cover. This design simplifies the assembly process and effectively avoids the problem of uneven electric field distribution caused by loosening under ultra-high voltage environment, thereby improving the shielding performance of the shielding cover. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 is a schematic diagram of the overall internal structure of this utility model;

[0016] Figure 3 is a schematic diagram of the bottom structure of this utility model;

[0017] Figure 4 is a structural schematic diagram of the first sidewall structure of this utility model;

[0018] Figure 5 is a structural schematic diagram of the second sidewall structure of this utility model;

[0019] Figure 6 is a schematic diagram of the top structure of this utility model.

[0020] In the diagram: 1. Bottom structure; 2. First sidewall structure; 3. Second sidewall structure; 4. Top structure; 5. Assembly plate; 11. Connecting plate; 12. Insertion tube; 13. First positioning tube; 14. First insertion block; 21. First arc-shaped plate; 22. First connecting plate; 23. First insertion cylinder; 24. First insulating pad; 25. First hollow tube; 26. First limiting pad; 31. Second arc-shaped plate; 32. Second connecting plate; 33. Second insertion cylinder; 34. Second insulating pad; 35. Second hollow tube; 36. First limiting pad; 41. Suspension shell; 42. Through tube; 43. Second positioning tube; 44. Second insertion block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1-6. This utility model provides a technical solution: a large suspended open-type split shielding cover for ultra-high voltage disconnecting switches, including a top structure 4, a second side wall structure 3 inserted into the outer wall of the bottom of the top structure 4, a first side wall structure 2 overlapping the outer wall of the second side wall structure 3, a bottom structure 1 inserted into the outer wall of the bottom of the first side wall structure 2, and a splicing plate 5 provided below the top structure 4.

[0023] The first sidewall structure 2 includes a first arc-shaped plate 21, with a first connecting plate 22 fixedly connected to the outer wall of the first arc-shaped plate 21, a first plug-in sleeve 23 fixedly connected to the outer wall of the first connecting plate 22, a first insulating pad 24 symmetrically fixedly connected to the outer wall of the first connecting plate 22, and a first limiting pad 26 symmetrically fixedly connected to the inner wall of the first connecting plate 22; the second sidewall structure 3 includes a second arc-shaped plate 31, with a second connecting plate 32 fixedly connected to the outer wall of the second arc-shaped plate 31, and a second plug-in sleeve 33 fixedly connected to the outer wall of the second connecting plate 32. The outer wall of the connecting plate 32 is symmetrically fixedly connected with a second insulating pad 34, and the inner wall of the second connecting plate 32 is symmetrically fixedly connected with a second limiting pad 36. The splicing plate 5 is fixedly connected to the outer walls of the first arc plate 21 and the second arc plate 31 respectively. The outer wall of the first connecting plate 22 overlaps with the outer wall of the second connecting plate 32. First, the two symmetrical first side wall structures 2 are spliced ​​and fixed to the splicing plate 5 with glue. The two first arc plates 21 after splicing form the left outer wall of the shield. Similarly, the splicing of the second arc plate 31 in the right second side wall structure 3 is completed.

[0024] The top structure 4 includes a suspension shell 41, with a through tube 42 fixedly connected to the inner wall of the suspension shell 41. A second positioning tube 43 is symmetrically fixedly connected to the outer wall of the bottom of the suspension shell 41. A second insertion block 44 is fixedly connected to the outer wall of the bottom of the suspension shell 41. The outer wall of the bottom of the through tube 42 is inserted into the inner wall of the top of the second insertion tube 33. The outer wall of the second positioning tube 43 is inserted into the inner wall of the second hollow tube 35. The inner wall of the second insertion block 44 is inserted into the outer wall of the first hollow tube 25. The first insertion tube 23 on the first connecting plate 22 corresponds to the insertion tube 12 of the bottom structure 1. The first insertion tube 23 at the top corresponds to the through tube 42 of the top structure 4. The second insertion tube 33 of the second connecting plate 32 forms an insertion fit with the through tube 42 of the top structure 4 and the insertion tube 12 of the bottom structure 1.

[0025] The bottom structure 1 includes a connecting plate 11. A connector 12 is fixedly connected to the inner wall of the connecting plate 11. First positioning tubes 13 are symmetrically fixedly connected to the outer wall of the top of the connecting plate 11. A first insertion block 14 is fixedly connected to the outer wall of the top of the connecting plate 11. The outer wall of the top of the connector 12 is inserted into the inner wall of the top of the second insertion tube 33. The outer wall of the first positioning tube 13 is inserted into the inner wall of the first hollow tube 25. The inner wall of the first insertion block 14 is inserted into the outer wall of the second hollow tube 35. The assembled first side... The wall structure 2 and the second side wall structure 3 are engaged with the column position of the high-voltage disconnector by the first insulating pad 24 and the second insulating pad 34. Then, the through tube 42, the second positioning tube 43, and the second plug block 44 of the suspension shell 41 are respectively inserted into the corresponding second plug tube 33, the second hollow tube 35, and the first hollow tube 25. The plug tube 12, the first positioning tube 13, and the first plug block 14 of the connecting plate 11 are inserted into the corresponding first plug tube 23, the first hollow tube 25, and the second hollow tube 35 to complete the overall assembly.

[0026] When using this UHV disconnector, the installation of the large suspended perforated split shielding cover involves first splicing and fixing the two symmetrical first side wall structures 2 together with glue and splicing plate 5. The two spliced ​​first arc-shaped plates 21 form the outer left wall of the shielding cover. Similarly, the splicing of the second arc-shaped plate 31 in the second side wall structure 3 on the right side is completed. At this time, the first plug-in tube 23 on the first connecting plate 22 corresponds to the plug-in tube 12 of the bottom structure 1, and the first plug-in tube 23 at the top corresponds to the through tube 42 of the top structure 4. The second plug-in tube 33 of the second connecting plate 32 forms a plug-in fit with the through tube 42 of the top structure 4 and the plug-in tube 12 of the bottom structure 1.

[0027] The assembled first sidewall structure 2 and second sidewall structure 3 are secured to the column position of the high-voltage disconnector using the first insulating pad 24 and the second insulating pad 34. Then, the through tube 42, the second positioning tube 43, and the second plug block 44 of the suspension shell 41 are inserted into the corresponding second plug tube 33, the second hollow tube 35, and the first hollow tube 25, respectively. The plug tube 12, the first positioning tube 13, and the first plug block 14 of the connecting plate 11 are inserted into the corresponding first plug tube 23, the first hollow tube 25, and the second hollow tube 35, completing the overall assembly. At this time, the cable will pass through the hole formed by the first limiting pad 26 and the second limiting pad 36, and finally pass through the through tube 42 and the internal hole of the plug tube 12 with bolts, enter the first connecting plate 22 and the second connecting plate 32, and tighten them. The double fixation of the plug structure and the bolts ensures that the components of the shielding cover are stably connected.

[0028] The shielding cover adopts a split plug-in splicing design, which reduces the difficulty of transportation and installation compared with the integral structure. The insulating pad positioning installation reduces the risk of electric shock during installation and ensures construction safety. At the same time, the dual fixing method of plug-in and bolt fastening simplifies the assembly process and ensures that the shielding cover remains stable in the ultra-high voltage environment, effectively avoiding the problem of uneven electric field distribution caused by loosening, and improving shielding performance and equipment operation reliability.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] 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 large suspended perforated split-type shielding cover for ultra-high voltage disconnecting switches, comprising a top structure (4), characterized in that: The outer wall of the bottom of the top structure (4) is connected to a second side wall structure (3), the outer wall of the second side wall structure (3) overlaps with a first side wall structure (2), the outer wall of the bottom of the first side wall structure (2) is connected to a bottom structure (1), and a splicing plate (5) is provided below the top structure (4); the first side wall structure (2) includes a first arc-shaped plate (21), the outer wall of the first arc-shaped plate (21) is fixedly connected to a first connecting plate (22), the outer wall of the first connecting plate (22) is fixedly connected to a first insertion cylinder (23), and the first connecting plate (22) is fixedly connected to a first insertion cylinder (23). The outer wall of the first connecting plate (22) is symmetrically fixedly connected with a first insulating pad (24), and the inner wall of the first connecting plate (22) is symmetrically fixedly connected with a first limiting pad (26); the second side wall structure (3) includes a second arc-shaped plate (31), the outer wall of the second arc-shaped plate (31) is fixedly connected with a second connecting plate (32), the outer wall of the second connecting plate (32) is fixedly connected with a second plug-in cylinder (33), the outer wall of the second connecting plate (32) is symmetrically fixedly connected with a second insulating pad (34), and the inner wall of the second connecting plate (32) is symmetrically fixedly connected with a second limiting pad (36).

2. The large suspended perforated split-type shielding cover for an ultra-high voltage disconnector according to claim 1, characterized in that: The splicing plate (5) is fixedly connected to the outer walls of the first arc plate (21) and the second arc plate (31) respectively, and the outer wall of the first connecting plate (22) overlaps with the outer wall of the second connecting plate (32).

3. The large suspended perforated split-type shielding cover for an ultra-high voltage disconnector according to claim 1, characterized in that: The top structure (4) includes a suspension shell (41), the inner wall of the suspension shell (41) is fixedly connected to a through tube (42), the outer wall of the bottom of the suspension shell (41) is symmetrically fixedly connected to a second positioning tube (43), and the outer wall of the bottom of the suspension shell (41) is fixedly connected to a second plug-in block (44).

4. A large suspended perforated split-type shielding cover for an ultra-high voltage disconnector according to claim 3, characterized in that: The outer wall of the bottom of the through tube (42) is inserted into the inner wall of the top of the second insertion tube (33), the outer wall of the second positioning tube (43) is inserted into the inner wall of the second hollow tube (35), and the inner wall of the second insertion block (44) is inserted into the outer wall of the first hollow tube (25).

5. A large suspended perforated split-type shielding cover for an ultra-high voltage disconnector according to claim 1, characterized in that: The bottom structure (1) includes a connecting plate (11), the inner wall of the connecting plate (11) is fixedly connected to a plug tube (12), the outer wall of the top of the connecting plate (11) is symmetrically fixedly connected to a first positioning tube (13), and the outer wall of the top of the connecting plate (11) is fixedly connected to a first plug block (14).

6. A large suspended perforated split-type shielding cover for an ultra-high voltage disconnector according to claim 5, characterized in that: The outer wall of the top of the insertion tube (12) is inserted into the inner wall of the top of the second insertion tube (33), the outer wall of the first positioning tube (13) is inserted into the inner wall of the first hollow tube (25), and the inner wall of the first insertion block (14) is inserted into the outer wall of the second hollow tube (35).

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