Integrated insulating barrel extended creep distance structure

Abstract

This utility model relates to the technical field of insulating cylinder structures, specifically to an integrated insulating cylinder extended creepage distance structure. It includes an integrated insulating cylinder body, which comprises a downward-opening cylindrical inner cavity. An annular groove is provided at the lower opening of the cylindrical inner cavity, and a soft insulating material ring is detachably connected to the annular groove. The inner wall of the soft insulating material ring has a corrugated convex-concave structure. When assembling a vacuum interrupter, the soft insulating material ring is in a disassembled, unassembled state, facilitating the insertion of the vacuum interrupter into the cylindrical inner cavity and avoiding interference. After the vacuum interrupter is installed, the soft insulating material ring is then assembled, utilizing the corrugated convex-concave structure of the inner wall of the soft insulating material ring to increase the creepage distance of the conductive rod to ground.

Description

Technical Field

[0001] This utility model relates to the field of insulating cylinder structure technology, specifically to an integrated insulating cylinder extended creepage distance structure. Background Technology

[0002] A circuit breaker solid-insulated pole is an independent component consisting of a vacuum interrupter, conductive connections, and / or terminals encapsulated with solid insulating material. Pre-fabricating this solid insulating material into an insulating cylinder reduces waste caused by integrated encapsulation schemes. The insulating cylinder plays a crucial role in supporting and insulating electrical components such as the vacuum interrupter, conductive connections, and / or terminals. The vacuum interrupter and insulating rod need to be installed inside the insulating cylinder. The lower end of the insulating cylinder is fixedly mounted on a stainless steel mounting bracket, which is grounded. In existing insulating cylinder structures, a conductive rod extends laterally from the connection between the insulating rod and the vacuum interrupter. In existing segmented insulating cylinder structures, refer to... Figure 1 By assembling the insulating cylinder in two separate sections, the installation of the vacuum interrupter can be facilitated while ensuring the creepage distance between the conductive rod and the stainless steel mounting bracket. However, the advantages of the integrated insulating cylinder over the separate type include simplified structure, higher strength, better manufacturability, and enhanced environmental adaptability. However, because the integrated insulating cylinder needs to accommodate the easy insertion and assembly of the vacuum interrupter from below, there is a problem with insufficient creepage distance between the conductive rod and the ground (stainless steel mounting bracket). Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to improve the integrated insulating cylinder structure so that it can facilitate the assembly of the vacuum interrupter while extending the creepage distance of the conductive rod to the ground.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An integrated insulating cylinder extended creepage distance structure includes an integrated insulating cylinder body, the integrated insulating cylinder body including a cylindrical inner cavity with the opening facing downward, an annular groove provided at the lower opening of the cylindrical inner cavity, a soft insulating material ring detachably connected to the annular groove, and the inner wall of the soft insulating material ring having a corrugated concave-convex structure.

[0005] Furthermore, in the aforementioned integrated insulating cylinder extended creepage distance structure, the soft insulating material ring is made of silicone.

[0006] Furthermore, in the aforementioned integrated insulating cylinder extended creepage distance structure, a vacuum interrupter and an insulating tie rod are connected sequentially from top to bottom inside the cylindrical cavity, and a conductive rod extending laterally out of the cylindrical cavity is connected between the vacuum interrupter and the insulating tie rod.

[0007] Furthermore, in the aforementioned integrated insulating cylinder extended creepage distance structure, the upper section of the outer wall of the soft insulating material ring is a tapered section. In the assembled state, the lower section of the soft insulating material ring is interference-fitted with the annular groove, and a gap is formed between the tapered section of the upper section and the annular groove.

[0008] Furthermore, in the aforementioned integrated insulating cylinder extended creepage distance structure, the taper of the tapered section is 5-10 degrees.

[0009] Furthermore, in the aforementioned integrated insulating cylinder extended creepage distance structure, the height of the soft insulating material ring is 40-60mm.

[0010] The beneficial effects of this utility model are as follows: by setting an annular groove at the lower opening of the integrated insulating cylinder body, and detachably connecting a soft insulating material ring at the annular groove, the soft insulating material ring is in a disassembled and unassembled state when assembling the vacuum interrupter, which facilitates the vacuum interrupter to be installed into the cylindrical inner cavity and avoids interference. After the vacuum interrupter is installed, the soft insulating material ring is then assembled. The corrugated concave-convex structure of the inner wall of the soft insulating material ring increases the creepage distance of the conductive rod to the ground. Attached Figure Description

[0011] Figure 1 A cross-sectional view of a pre-existing split-type insulating cylinder assembly; Figure 2 This is a cross-sectional view of an integrated insulating cylinder extended creepage distance structure according to a specific embodiment of the present utility model; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 A cross-sectional view of the soft insulating material ring involved in an integrated insulating cylinder extended creepage distance structure according to a specific embodiment of this utility model; Label Explanation: 1. Integrated insulating cylinder body; 11. Cylindrical inner cavity; 12. Annular groove; 2. Soft insulating material ring; 21. Corrugated concave-convex structure; 22. Conical segment; 3. Vacuum interrupter; 4. Insulating tie rod; 5. Conductive rod; 6. Stainless steel mounting bracket; 7. Gap. Detailed Implementation

[0012] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0013] In the existing segmented insulating cylinder structure, referring to Figure 1By assembling the insulating cylinder in two separate sections, the installation of the vacuum interrupter can be facilitated while ensuring the creepage distance between the conductive rod and the stainless steel mounting bracket. However, the advantages of the integrated insulating cylinder over the separate type include simplified structure, higher strength, better manufacturability, and enhanced environmental adaptability. But because the integrated insulating cylinder needs to accommodate the easy insertion and assembly of the vacuum interrupter from below, there is a problem with insufficient creepage distance between the conductive rod and the ground (stainless steel mounting bracket).

[0014] To solve the above problems, refer to Figures 2 to 4 The present invention relates to an integrated insulating cylinder extended creepage distance structure, comprising an integrated insulating cylinder body 1, wherein the integrated insulating cylinder body 1 comprises a cylindrical inner cavity 11 with the opening facing downward, an annular groove 12 is provided at the lower opening of the cylindrical inner cavity 11, and a soft insulating material ring 2 is detachably connected to the annular groove 12, and the inner wall of the soft insulating material ring 2 is provided with a corrugated concave-convex structure.

[0015] In the above embodiments, by providing an annular groove 12 at the lower opening of the integrated insulating cylinder body, and detachably connecting a soft insulating material ring 2 at the annular groove 12, the soft insulating material ring 2 is in a disassembled and unassembled state when assembling the vacuum interrupter 3, which facilitates the vacuum interrupter 3 to be installed into the cylindrical inner cavity 11 and avoids interference. After the vacuum interrupter 3 is installed, the soft insulating material ring 2 is then assembled, and the corrugated uneven structure 21 on the inner wall of the soft insulating material ring 2 increases the creepage distance of the conductive rod 5 to the ground.

[0016] In a preferred embodiment, the soft insulating material ring 2 is made of silicone.

[0017] In a preferred embodiment, a vacuum interrupter 3 and an insulating pull rod 4 are connected sequentially from top to bottom inside the cylindrical inner cavity 11, and a conductive rod 5 extending laterally out of the cylindrical inner cavity 11 is connected between the vacuum interrupter 3 and the insulating pull rod 4.

[0018] During assembly, the lower part of the integrated insulating cylinder body is connected to the stainless steel mounting bracket 6. The creepage distance (creep distance) can be understood as the creepage distance of the conductive rod 5 along the insulating surface to the stainless steel mounting bracket 6.

[0019] In a preferred embodiment, the upper section of the outer wall of the soft insulating material ring 2 is a tapered section 22. In the assembled state, the lower section of the soft insulating material ring 2 is interference-fitted with the annular groove 12, and a gap 7 is formed between the tapered section 22 and the annular groove 12.

[0020] In the above embodiments, the tapered segment 22 of the soft insulating material ring 2 facilitates the transfer of the soft insulating material to the annular groove 12, and on the other hand, refers to... Figure 2 as well as Figure 3 After assembly, a gap 7 is formed between the tapered section 22 and the annular groove 12 in the upper section, which further increases the creepage distance.

[0021] In a preferred embodiment, the taper of the tapered segment 22 is 5-10 degrees.

[0022] In a preferred embodiment, the height of the soft insulating material ring 2 is 40-60 mm.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An integrated insulating cylinder extended creepage distance structure, characterized in that, The device includes an integrated insulating cylinder body, which includes a cylindrical inner cavity with its opening facing downwards. An annular groove is provided at the lower opening of the cylindrical inner cavity, and a soft insulating material ring is detachably connected to the annular groove. The inner wall of the soft insulating material ring has a corrugated concave-convex structure.

2. The integrated insulating cylinder extended creepage distance structure according to claim 1, characterized in that, The soft insulating material ring is made of silicone.

3. The integrated insulating cylinder extended creepage distance structure according to claim 1, characterized in that, The upper section of the outer wall of the soft insulating material ring is a tapered section. In the assembled state, the lower section of the soft insulating material ring is interference-fitted with the annular groove, and a gap is formed between the tapered section of the upper section and the annular groove.

4. The integrated insulating cylinder extended creepage distance structure according to claim 3, characterized in that, The taper of the tapered section is 5-10 degrees.

5. The integrated insulating cylinder extended creepage distance structure according to claim 1, characterized in that, The height of the soft insulating material ring is 40-60mm.

Images