A sealing structure for the installation of a viewing window on a ring main unit door

Abstract

This utility model belongs to the field of ring main unit technology, and particularly relates to an installation and sealing structure for a viewing window on a ring main unit door. It includes a window on the ring main unit door, and further includes: a viewing window, which is installed on the ring main unit door and located at the window by fasteners; a sealing assembly, including a first sealing element and a second sealing element, the first sealing element having a groove, and the second sealing element having a snap-fit ​​protrusion, the snap-fit ​​protrusion and the groove engaging, and a first lip groove forming between the first and second sealing elements; a fixing protrusion on the window, the fixing protrusion engaging with the first lip groove. The beneficial effects of this utility model are that the sealing assembly is composed of a first sealing element and a second sealing element, which increases the contact area and improves the sealing effect; furthermore, when the first sealing element ages and loses its elasticity and sealing effect, it only needs to be disassembled and replaced, extending the service life of the sealing assembly and making maintenance more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of ring main unit technology, and in particular relates to an installation and sealing structure for a viewing window on a ring main unit door. Background Technology

[0002] A ring main unit (RMU) is an electrical device consisting of a group of power transmission and distribution equipment housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. Its core components include load switches and fuses, offering advantages such as simple structure, small size, low cost, improved power supply parameters and performance, and enhanced power supply safety. Currently, some RMUs typically have viewing windows installed on their doors for easy observation of the operation of internal electrical components such as load switches. In existing technology, most viewing windows are fixed to the door opening with fasteners, and sealing strips are adhered to the edges of the window to prevent liquids and dust from entering the cabinet through the gap between the viewing window and the door, ensuring a tight seal between them. However, since the sealing strip is installed around the edge of the window, part of the sealing strip will be exposed on the outside of the cabinet door. Due to environmental factors (such as moisture, temperature difference, light) and external physical friction, the exposed part of the sealing strip is more prone to aging and wear. Long-term use will cause it to fail first, thus affecting and damaging the sealing performance of the overall sealing strip. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned technical problems by providing an installation and sealing structure for the viewing window on the door of a ring main unit, thereby solving the above-mentioned technical problems.

[0004] In view of this, the present invention provides an installation and sealing structure for a viewing window on a ring main unit door, including a ring main unit door, a window being provided on the ring main unit door, and further including: The viewing window is installed on the ring main unit door using fasteners and is located at the window position; A sealing assembly includes a first sealing element and a second sealing element. The first sealing element has a groove, and the second sealing element has a snap-fit ​​protrusion. The snap-fit ​​protrusion and the groove are inserted into each other, and a first lip groove is formed between the first sealing element and the second sealing element. The window is equipped with a fixed protrusion, which engages with the first lip groove.

[0005] Furthermore, the two sides of the snap-fit ​​protrusion are also provided with an integral arc-shaped snap-fit ​​piece, the end of which abuts against the inner wall of the snap-fit ​​groove.

[0006] Furthermore, the number of arc-shaped snap-fit ​​pieces is several.

[0007] Furthermore, a second lip groove is formed between the first seal and the second seal, and a connecting protrusion is provided on the periphery of the viewing window, with the connecting protrusion and the second lip groove engaging in a locking fit.

[0008] Furthermore, the second seal has an arc-shaped contact surface.

[0009] The beneficial effects of this utility model are: The system achieves a sealed installation of the viewing window on the ring main unit door. The sealing assembly is composed of a first seal and a second seal. On the one hand, the contact area between the sealing assembly and the viewing window is set in an "L" shape, increasing the contact area and effectively improving the sealing effect. On the other hand, when the first seal exposed on the outside of the ring main unit is affected by environmental factors and becomes severely aged and loses its elasticity and sealing effect, the operator only needs to remove and replace the first seal, without having to remove the viewing window to replace the entire sealing assembly. This effectively extends the service life of the sealing assembly and makes maintenance operations more convenient. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the sealing component in this utility model; Figure 3 This is a partial structural cross-sectional view of the ring network cabinet door in Embodiment 1 of this utility model; Figure 4 This is a partial structural cross-sectional view of the ring network cabinet door in embodiment 3 of the utility model; The markings in the diagram represent: 1. Ring main unit door; 2. Viewing window; 21. Connecting protrusion; 3. First sealing element; 31. Slot; 4. Second sealing element; 41. Snap-fit ​​protrusion; 42. Arc-shaped snap-fit ​​piece; 43. Arc-shaped contact surface; 5. First lip groove; 6. Second lip groove. Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0012] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0013] Example 1:

[0014] This embodiment provides an installation and sealing structure for a viewing window on a ring main unit door, including a ring main unit door 1, a window on the ring main unit door 1, a fixing protrusion on the window, and further including: Viewing window 2 is installed on the ring network cabinet door 1 by setting fasteners and is located at the window position; The sealing assembly includes a first sealing element 3 and a second sealing element 4. The first sealing element 3 has a groove 31, and the second sealing element 4 has a snap-fit ​​protrusion 41. The snap-fit ​​protrusion 41 and the groove 31 are inserted into each other, and a first lip groove 5 is formed between the first sealing element 3 and the second sealing element 4. The window is equipped with a fixed protrusion, which engages with the first lip groove 5.

[0015] In this technical solution, both the first sealing element 3 and the second sealing element 4 are made of rubber. The snap-fit ​​protrusion 41 of the first sealing element 3 is pressed into the snap-fit ​​groove 31 of the second sealing element 4 for insertion and engagement, thereby assembling the first sealing element 3 and the second sealing element 4 together to form a complete sealing assembly. A first lip groove 5 is formed between the first sealing element 3 and the second sealing element 4. A fixing protrusion is provided on the window edge of the ring main unit door 1. By snapping the first lip groove 5 into the fixing protrusion, the first lip groove 5 clamps the fixing protrusion, thereby achieving the installation and fixation of the sealing assembly on the window.

[0016] Then, the viewing window 2 is connected to the inside of the ring network cabinet door 1 by fasteners. The viewing window 2 includes a connecting part and an observation part. The connecting part is used to connect the fasteners to the ring network cabinet door 1, and the end face of the connecting part near the ring network cabinet door 1 abuts against the first sealing member 3, pressing the first sealing member 3 onto the fixed protrusion to achieve a sealed connection of the connecting part. The periphery of the observation part is in contact with both the first sealing member 3 and the second sealing member 4 to achieve a double seal on the periphery of the observation part.

[0017] Through the above structural design, the viewing window 2 is sealed and installed on the window of the ring main unit door 1. The sealing component is composed of a first sealing element 3 and a second sealing element 4. On the one hand, the contact area between the sealing component and the viewing window 2 is set in an "L" shape, which increases the contact area and effectively improves the sealing effect. On the other hand, when the first sealing element 3 exposed on the outside of the ring main unit is affected by environmental factors and becomes severely aged and loses its elastic sealing effect, the operator only needs to remove the first sealing element 3 for replacement, without having to remove the viewing window 2 to replace the entire sealing component. This effectively extends the service life of the sealing component and makes maintenance operations more convenient.

[0018] Example 2:

[0019] This embodiment provides an installation and sealing structure for a viewing window on a ring main unit door. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0020] Furthermore, the two sides of the snap-fit ​​protrusion 41 are also provided with integrally formed arc-shaped snap-fit ​​pieces 42, the ends of which abut against the inner wall of the snap-fit ​​groove 31. Through this structural design, during the insertion process of the snap-fit ​​protrusion 41 and the snap-fit ​​groove 31, the arc-shaped snap-fit ​​pieces 42 are first squeezed towards the snap-fit ​​protrusion 41 by the groove opening of the snap-fit ​​groove 31. After the arc-shaped snap-fit ​​pieces 42 are fully inserted into the snap-fit ​​groove 31, they return to their original shape and abut against the inner wall of the snap-fit ​​groove 31, thus achieving snap-fit ​​fixation and effectively enhancing the connection stability between the snap-fit ​​protrusion 41 and the snap-fit ​​groove 31.

[0021] Furthermore, the number of arc-shaped snap-fit ​​pieces 42 is several. By setting several arc-shaped snap-fit ​​pieces 42, the snap-fit ​​stability is improved, effectively increasing the connection strength when the first seal 3 and the second seal 4 are assembled together, and preventing the second seal 4 from being detached by non-human external forces.

[0022] Example 3:

[0023] This embodiment provides an installation and sealing structure for a viewing window on a ring main unit door. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0024] Furthermore, a second lip groove 6 is formed between the first sealing member 3 and the second sealing member 4, and a connecting protrusion 21 is provided on the periphery of the viewing window 2, the connecting protrusion 21 and the second lip groove 6 engaging with each other.

[0025] A connecting protrusion 21 with a second lip groove 6 structure is provided on the periphery of the observation part of the viewing window 2. The second lip groove 6 clamps and fits the connecting protrusion 21 to further increase the contact area between the periphery of the observation part and the sealing component, thereby effectively improving the sealing performance.

[0026] Furthermore, the second seal 4 is provided with an arc-shaped contact surface 43. Designing the exposed end face of the second seal 4 as an arc-shaped contact surface 43 facilitates the operator to pinch the second seal 4 with their fingers, thereby separating the second seal 4 from the first seal 3 and improving disassembly convenience. The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many other forms without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. A sealing structure for the installation of a viewing window on a ring main unit door, comprising a ring main unit door (1), wherein the ring main unit door (1) has a window, characterized in that, Also includes: A viewing window (2) is installed on the ring network cabinet door (1) by setting fasteners and is located at the window; The sealing assembly includes a first sealing element (3) and a second sealing element (4). The first sealing element (3) has a slot (31) and the second sealing element (4) has a snap-fit ​​protrusion (41). The snap-fit ​​protrusion (41) and the slot (31) are inserted into each other, and a first lip groove (5) is formed between the first sealing element (3) and the second sealing element (4). The window is provided with a fixed protrusion, which engages with the first lip groove (5).

2. The installation and sealing structure for the viewing window on a ring main unit door according to claim 1, characterized in that, The two sides of the snap-fit ​​protrusion (41) are also provided with an integral arc-shaped snap-fit ​​piece (42), the end of the arc-shaped snap-fit ​​piece (42) abutting against the inner wall of the snap-fit ​​groove (31).

3. The installation and sealing structure for the viewing window on a ring main unit door according to claim 2, characterized in that, The number of the arc-shaped snap-fit ​​pieces (42) is several.

4. The installation and sealing structure for the viewing window on a ring main unit door according to claim 1, characterized in that, A second lip groove (6) is formed between the first seal (3) and the second seal (4), and a connecting protrusion (21) is provided on the periphery of the viewing window (2), wherein the connecting protrusion (21) and the second lip groove (6) are engaged.

5. The installation and sealing structure for a viewing window on a ring main unit door according to claim 1, characterized in that, The second seal (4) is provided with an arc-shaped contact surface (43).

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