Sealing assembly for outdoor composite insulation mutual inductor based on spigot structure

Abstract

The utility model discloses a sealing assembly for an outdoor composite insulation mutual inductor based on a spigot structure, and relates to the technical field of sealing pieces. Comprising a silicone rubber ring structure, the silicone rubber ring structure comprises a rubber ring, a connecting ring is fixedly connected to the side wall in the rubber ring, a shielding structure is clamped to the outer wall of the connecting ring, a connecting structure is clamped to the outer wall of the bottom of the connecting ring, the silicone rubber ring structure further comprises a spigot ring, and a protruding ring is fixedly connected to the side wall of the spigot ring. The outer wall of the top of the spigot ring is fixedly connected with the outer wall of the connecting ring, an anti-disengaging groove is formed in the outer wall of the connecting ring, the outer wall of the connecting ring is fixedly connected with a limiting ring, multiple layers of silicon rubber ring structures are mutually clamped and nested, gaps are filled between the rubber rings and the connecting ring through elastic deformation, and the contact area is increased through a protruding ring of the spigot ring; and stable sealing can still be kept under the conditions of temperature change and mechanical vibration.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, specifically a sealing assembly for outdoor composite insulated instrument transformers based on a stop structure. Background Technology

[0002] In outdoor high-voltage power transmission and transformation systems, composite-insulated instrument transformers are core devices for voltage and current signal conversion. Their sealing performance directly affects equipment reliability and power grid safety. However, traditional outdoor instrument transformer sealing components generally use single-layer silicone rubber rings or simple nested structures. Existing sealing components are mostly single-layer rubber rings that seal independently, relying on the elastic deformation of a single material to fill gaps. When encountering extreme temperature differences from -40℃ to 80℃, the rubber is prone to stress relaxation due to thermal expansion and contraction, resulting in a decrease in the sealing surface fit. Especially under mechanical vibration conditions, the single-layer structure is difficult to evenly distribute stress, and local excessive deformation or displacement is likely to occur, forming leakage channels. After long-term operation, traditional sealing components are prone to sealing failure due to aging and deformation, which in turn leads to moisture inside the instrument transformer, a decrease in insulation performance, and even short-circuit accidents. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a sealing component for outdoor composite insulation transformers based on a stop structure. The sealing stability is enhanced by the multi-layer snap-fit ​​nesting of the silicone rubber ring structure. Combined with the shielding structure and the connection structure, it achieves top anti-aging and bottom anti-intrusion protection, thereby making the sealing component less prone to failure in extreme outdoor environments, thus extending its service life and ensuring the long-term reliable operation of high-voltage power transmission and transformation equipment.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a sealing component for an outdoor composite insulated transformer based on a stop structure, comprising a silicone rubber ring structure, wherein the silicone rubber ring structure comprises a rubber ring, a connecting ring is fixedly connected to the inner side wall of the rubber ring, a shielding structure is snapped onto the outer wall of the connecting ring, and a connecting structure is snapped onto the outer wall at the bottom of the connecting ring.

[0007] Preferably, the silicone rubber ring structure further includes a stop ring, the side wall of which is fixedly connected to a protruding ring, the outer wall of the top of the stop ring is fixedly connected to the outer wall of the connecting ring, the outer wall of the connecting ring is provided with an anti-detachment groove, and the outer wall of the connecting ring is fixedly connected to a limit ring. Through the interlocking and nesting of the multi-layer silicone rubber ring structure, the rubber ring and the connecting ring fill the gaps by elastic deformation, and the protruding ring of the stop ring increases the contact area, so that a stable seal can still be maintained under temperature changes and mechanical vibration.

[0008] Preferably, the shielding structure includes a wrapping ring, the outer wall of the top of the wrapping ring is fixedly connected to a shielding ring, the inner wall of the wrapping ring is provided with a connecting groove, and the outer wall of the wrapping ring is engaged with the outer wall of the top of the connecting ring through the connecting groove.

[0009] Preferably, the connection structure includes a sealing ring, with a fitting ring fixedly connected to the outer wall of the bottom of the sealing ring. The inner side wall of the sealing ring engages with the outer side wall of the limiting ring, and the outer side wall of the sealing ring engages with the outer wall of the stop ring. Through the combined action of the shielding structure and the connection structure, the top silicone rubber ring can be protected from ultraviolet rays and wind and sand. The connection structure achieves tight protection at the bottom through the sealing ring and the fitting ring, preventing the intrusion of moisture and debris. It is suitable for various complex outdoor environments, effectively extending the service life of the sealing components and ensuring the long-term stable operation of the current transformer.

[0010] (III) Beneficial Effects

[0011] This utility model provides a sealing assembly for outdoor composite insulated instrument transformers based on a stop structure. It has the following advantages:

[0012] (i) The sealing assembly uses a multi-layer silicone rubber ring structure that interlocks and nests with each other. The rubber ring and the connecting ring fill the gaps with elastic deformation. The raised ring of the stop ring increases the contact area. It can maintain a stable seal under temperature changes and mechanical vibration, ensuring the safe operation of the transformer.

[0013] (ii) This sealing assembly, through the combined action of the shielding structure and the connecting structure, can resist the erosion of the top silicone rubber ring by ultraviolet rays and wind and sand. The connecting structure achieves tight protection of the bottom through the sealing ring and the fitting ring, preventing the intrusion of moisture and debris. It is suitable for various complex outdoor environments, effectively extending the service life of the sealing assembly and ensuring the long-term stable operation of the current transformer. Attached Figure Description

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

[0015] Figure 2 This is an exploded structural diagram of the entire utility model;

[0016] Figure 3 This is a schematic diagram of the silicone rubber ring structure of this utility model;

[0017] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0018] Figure 5 This is a schematic diagram of the shielding structure of this utility model;

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

[0020] In the diagram: 1. Silicone rubber ring structure; 2. Shielding structure; 3. Connecting structure; 11. Rubber ring; 12. Connecting ring; 13. Anti-detachment groove; 14. Stop ring; 15. Protruding ring; 16. Limiting ring; 21. Wrapping ring; 22. Shielding ring; 23. Connecting groove; 31. Sealing ring; 32. Fitting ring. 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 see Figure 1-6 This utility model provides a technical solution: a sealing component for an outdoor composite insulated transformer based on a stop structure, including a silicone rubber ring structure 1, the silicone rubber ring structure 1 including a rubber ring 11, a connecting ring 12 fixedly connected to the inner side wall of the rubber ring 11, a shielding structure 2 snapped onto the outer wall of the connecting ring 12, and a connecting structure 3 snapped onto the outer wall at the bottom of the connecting ring 12.

[0023] The silicone rubber ring structure 1 also includes a stop ring 14. A protruding ring 15 is fixedly connected to the side wall of the stop ring 14. The outer wall of the top of the stop ring 14 is fixedly connected to the outer wall of the connecting ring 12. An anti-detachment groove 13 is provided on the outer wall of the connecting ring 12. A limit ring 16 is fixedly connected to the outer wall of the connecting ring 12. Multiple silicone rubber ring structures 1 are stacked and nested in sequence. The number of silicone rubber rings can be selected according to the actual use. When the use scenario is not clear, a three-layer nesting method is used. The anti-detachment groove 13 on the top side wall of the connecting ring 12 of the lower silicone rubber ring structure 1 is engaged with the protruding ring 15 of the stop ring 14 of the upper silicone rubber ring structure 1. The stable connection of the multi-layer silicone rubber ring structure 1 is achieved through this engagement structure, forming an overall sealing base.

[0024] The shielding structure 2 includes a wrapping ring 21, and a shielding ring 22 is fixedly connected to the outer wall of the top of the wrapping ring 21. The inner wall of the wrapping ring 21 is provided with a connecting groove 23. The outer wall of the wrapping ring 21 is engaged with the outer wall of the top of the connecting ring 12 through the connecting groove 23. The connecting groove 23 of the inner wall of the wrapping ring 21 of the shielding structure 2 is engaged with the outer wall of the top of the connecting ring 12 of the top silicone rubber ring structure 1. The shielding ring 22 can protect the top.

[0025] The connecting structure 3 includes a sealing ring 31. A fitting ring 32 is fixedly connected to the outer wall of the bottom of the sealing ring 31. The inner side wall of the sealing ring 31 is engaged with the outer side wall of the limiting ring 16. The outer side wall of the sealing ring 31 is engaged with the outer wall of the stop ring 14. The inner side wall of the sealing ring 31 of the connecting structure 3 is engaged with the limiting ring 16 of the bottom silicone rubber ring structure 1, and the outer side wall is engaged with the stop ring 14. The bottom fitting ring 32 is tightly fitted to the mounting surface to achieve bottom sealing.

[0026] When using this sealing component, multiple silicone rubber ring structures 1 are first stacked and nested in sequence. The number of silicone rubber rings can be selected according to the actual use. When the use scenario is not clear, a three-layer nesting method is used.

[0027] The anti-detachment groove 13 on the top side wall of the connecting ring 12 of the lower silicone rubber ring structure 1 is engaged with the protruding ring 15 of the stop ring 14 of the upper silicone rubber ring structure 1. This engagement structure achieves a stable connection of the multi-layer silicone rubber ring structure 1, forming an overall sealing base. After stacking, the inner wall connecting groove 23 of the wrapping ring 21 of the shielding structure 2 is engaged with the top outer wall of the connecting ring 12 of the top silicone rubber ring structure 1. The shielding ring 22 can protect the top and prevent external impurities and rainwater from directly entering the silicone rubber ring structure 1. At the same time, the inner side wall of the sealing ring 31 of the connecting structure 3 is engaged with the limiting ring 16 of the bottom silicone rubber ring structure 1, and the outer side wall is engaged with the stop ring 14. The bottom fitting ring 32 is tightly fitted to the mounting surface to achieve bottom sealing.

[0028] When the insulated transformer is operating outdoors, the rubber ring 11 of the multi-layer silicone rubber ring structure 1 and the connecting ring 12 work together to fill the gaps by the elastic deformation of the silicone rubber, thus sealing the transformer. The raised ring 15 of the stop ring 14 increases the sealing contact area and further improves the sealing effect. The multi-layer nested and interlocking structure design ensures that the force between each layer is uniform, and it can maintain a stable sealing state even under the conditions of external temperature changes and mechanical vibration. The shielding structure 2 prevents ultraviolet rays, wind and sand from corroding the top silicone rubber ring and extends its service life. The connecting structure 3, through the sealing ring 31 and the fitting ring 32, ensures a tight seal at the bottom, preventing moisture and debris from entering the sealing components from the bottom, thereby protecting the transformer and ensuring the long-term stable operation of the equipment.

[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 sealing assembly for an outdoor composite insulated instrument transformer based on a stop structure, comprising a silicone rubber ring structure (1), wherein the silicone rubber ring structure (1) includes a rubber ring (11), and a connecting ring (12) is fixedly connected to the inner sidewall of the rubber ring (11), characterized in that: The outer wall of the connecting ring (12) is fitted with a shielding structure (2), and the outer wall at the bottom of the connecting ring (12) is fitted with a connecting structure (3). The silicone rubber ring structure (1) also includes a stop ring (14), the side wall of the stop ring (14) is fixedly connected with a protruding ring (15), the outer wall of the top of the stop ring (14) is fixedly connected with the outer wall of the connecting ring (12), the outer wall of the connecting ring (12) is provided with an anti-detachment groove (13), and the outer wall of the connecting ring (12) is fixedly connected with a limit ring (16).

2. The sealing assembly for an outdoor composite insulated instrument transformer based on a stop structure according to claim 1, characterized in that: The shielding structure (2) includes a wrapping ring (21), and a shielding ring (22) is fixedly connected to the outer wall of the top of the wrapping ring (21). A connecting groove (23) is provided on the inner wall of the wrapping ring (21).

3. A sealing assembly for an outdoor composite insulated instrument transformer based on a stop structure according to claim 2, characterized in that: The outer wall of the wrapping ring (21) is engaged with the outer wall of the top of the connecting ring (12) through the connecting groove (23).

4. A sealing assembly for an outdoor composite insulated instrument transformer based on a stop structure according to claim 1, characterized in that: The connection structure (3) includes a sealing ring (31), and a fitting ring (32) is fixedly connected to the outer wall of the bottom of the sealing ring (31).

5. A sealing assembly for an outdoor composite insulated instrument transformer based on a stop structure according to claim 4, characterized in that: The inner sidewall of the sealing ring (31) is engaged with the outer sidewall of the limiting ring (16), and the outer sidewall of the sealing ring (31) is engaged with the outer wall of the stop ring (14).

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