Waterproof device for ring main unit
By installing waterproof isolation and protection mechanisms inside the ring main unit, the impact of external moisture and vibration on circuit operation is resolved, achieving higher waterproof and moisture-proof effects and equipment protection, and extending service life.
Patent Information
- Application Number
- CN202422915246.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In existing ring main units, external moisture and vibration affect the circuit operation, leading to a shortened service life and unstable operation.
The ring main unit is equipped with waterproof and protective mechanisms, including retractable windows, ventilation panels, and air columns, to prevent moisture and vibration from affecting the equipment.
It effectively isolates external moisture and rainwater, protects equipment from vibration damage, and improves the waterproof and moisture-proof performance and service life of the ring main unit.
Smart Images

Figure CN223540087U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ring main unit technology, specifically a waterproof device for ring main units. Background Technology
[0002] The ring main unit (RMU) is designed with multiple power distribution branches. Even if the main power supply is a single circuit, each branch can draw power from the main lines on both sides, ensuring that other lines can continue to supply power when one line fails, thereby improving the reliability of power supply. At the same time, the RMU can limit short-circuit current, prevent the transformer from being subjected to sudden short-circuit fault current, quickly cut off internal short-circuit faults in the transformer, and protect the transformer from damage. For this purpose, a waterproof device for the RMU is proposed.
[0003] The existing Chinese utility model patent with publication number CN219394102U discloses a waterproof device for a ring main unit, belonging to the field of ring main unit technology. This technical solution includes a support base, a ring main unit body, and a heat dissipation and dehumidification mechanism. The support base includes a support frame and support plates. Multiple evenly distributed support plates are fixedly connected within the support frame. The ring main unit body is placed within the support frame and rests on the support plates. In use, the ring main unit body rests on the support plates within the support frame, avoiding direct contact with the ground and effectively reducing the corrosion of the bottom of the ring main unit body by rainwater and moisture. Furthermore, during use, a fan extracts high-temperature gas from the upper part of the ring main unit body through an exhaust pipe and an exhaust pipe, which is then introduced into the support frame through a ventilator to ventilate and dry the support frame, removing moisture. This not only improves heat dissipation and dehumidification but also prevents moisture from entering the bottom of the ring main unit body, thereby increasing the service life of the ring main unit body and making it safer to use.
[0004] Based on the search of the aforementioned patents and the findings of existing equipment, it is discovered that due to the large number of circuits inside the ring main unit, external moisture and air moisture entering the equipment during use can affect the operation of the circuits. Furthermore, vibrations inside the ring main unit can also affect the normal operation of the circuits. All of these problems affect the use of the device. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a waterproof device for ring main units, which has the advantages of moisture and water resistance and protection during use, thus solving the aforementioned technical problems.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a waterproof device for a ring main unit, comprising a ring main unit body, a ring main unit waterproof isolation mechanism installed on one side of the inside of the ring main unit body, and a ring main unit protective mechanism installed in the middle of the inside of the ring main unit body. The ring main unit waterproof isolation mechanism includes: a telescopic window installed on one side of the inside of the ring main unit body, the telescopic window being installed on one side of the inner box of the ring main unit body, and the inside of the telescopic window being provided with ventilation plates at intervals, and movable plates being provided on both the upper and lower sides of the telescopic window, a handle being installed on one side of the telescopic window, and vertical grooves for raindrops to flow down being provided at equal intervals below the telescopic window.
[0009] The protective mechanism of the ring main unit includes: a cabinet box installed in the middle of the inside of the main unit, an inner cabinet box inside the cabinet box, and mounting rails fixedly installed on both sides of the inner cabinet box, and an equipment box on one side of the mounting rails. Inflatable columns for four-sided protection of the equipment are installed on the outside of the inner cabinet box.
[0010] As a preferred embodiment of this utility model, a shielding device is fixedly installed on the top of the wire mesh cabinet, and a bottom panel is fixedly installed on the bottom of the wire mesh cabinet; the shielding device shields the top of the wire mesh cabinet.
[0011] As a preferred technical solution of this utility model, a side window is provided on the left side of the wire mesh cabinet, and a baffle is provided on one side of the side window. Fixing blocks are fixedly installed on both sides of the bottom of the side window, and an adjusting rod is connected to one side of the fixing block. A bottom hole is embedded in the bottom of the wire mesh cabinet, and a lower box is connected to the bottom of the wire mesh cabinet. The baffle blocks rainwater from the outside of the side window.
[0012] As a preferred technical solution of this utility model, the telescopic window is provided in two sets, and the telescopic window is located on one side of the inner box of the wire mesh cabinet. The vertical groove is embedded in both sides of the inner box of the wire mesh cabinet, and the ventilation plate is staggered front and back. The telescopic window allows the interior of the wire mesh cabinet to be ventilated.
[0013] As a preferred technical solution of this utility model, the cabinet box is provided in three sets, and there are several inflatable columns. The cabinet box is located inside the inner box of the wire mesh cabinet. The inner box of the wire mesh cabinet protects the inside of the wire mesh cabinet box.
[0014] As a preferred technical solution of this utility model, the side panel and the telescopic window are the same size, and the four vertices of the side panel and the telescopic window are located on the same horizontal line. The fixing block is installed on one side of the wire mesh cabinet at the same time, and the side panel is inlaid with a groove. The side panel allows air to circulate inside the wire mesh cabinet.
[0015] As a preferred technical solution of this utility model, the lower body box and the wire mesh cabinet have the same length and width, and the shielding device is installed at an angle above the wire mesh cabinet; the lower body box can be used to collect water inside the wire mesh cabinet.
[0016] Compared with the prior art, this utility model provides a waterproof device for ring main units, which has the following features:
[0017] Beneficial effects:
[0018] 1. This utility model provides further protection for the interior of the wire mesh cabinet by setting an inner box inside the cabinet body. The inner box has a window on one side, and the window has two sets of telescopic windows. Ventilation plates are set between the two sets of telescopic windows and are staggered. The telescopic window on one side can be closed or opened by moving the sliding plate and the handle. The open telescopic window allows air to enter the inner box, while the closed telescopic window prevents external moisture from entering the inner box, thus preventing moisture or rain from affecting the normal operation of the equipment inside the inner box and isolating it.
[0019] 2. This utility model has a cabinet box inside the cabinet body, and an inner cabinet box inside the cabinet box. The equipment box is installed in the inner cabinet box by mounting rails on both sides. The outer side of the inner cabinet box is equipped with an air column containing air, which can prevent the outer side of the inner cabinet box from being impacted or vibrated, thus protecting the internal equipment and reducing damage to the equipment due to vibration. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the inner box assembly of the structural cabinet of this utility model;
[0022] Figure 3 This is a schematic diagram of the structural mesh cabinet components of this utility model;
[0023] Figure 4 This is a schematic diagram of the structural cabinet box assembly of this utility model;
[0024] The components include: 1. Cabinet body; 11. Side panel; 12. Baffle; 13. Fixing block; 14. Adjusting rod; 15. Bottom hole; 16. Lower box; 2. Covering device; 3. Cabinet box; 31. Inner cabinet box; 32. Inflatable column; 33. Mounting rail; 34. Equipment box; 4. Bottom panel; 5. Inner box of the cabinet; 51. Telescopic window; 52. Ventilation panel; 53. Movable panel; 54. Handle; 55. Vertical groove. Detailed Implementation
[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] Please see Figure 1 — Figure 4 In this embodiment, a waterproof device for a ring main unit includes a ring main unit body 1. A waterproof isolation mechanism for the ring main unit is installed on one side of the interior of the ring main unit body 1. A protective mechanism for the ring main unit is installed in the middle of the interior of the ring main unit body 1. A side panel 11 is provided on the left side of the ring main unit body 1, and a baffle 12 is provided on one side of the side panel 11. Fixing blocks 13 are fixedly installed on both sides of the bottom of the side panel 11. An adjusting rod 14 is connected to one side of the fixing block 13. A bottom hole 15 is embedded in the bottom of the ring main unit body 1, and a lower body box 16 is connected to the bottom of the ring main unit body 1. The lower body box 16 has the same length and width as the ring main unit body 1, and the shielding device 2 is installed obliquely above the ring main unit body 1.
[0029] Specifically, a side panel 11 is provided on the left side of the wire mesh cabinet 1. The side panel 11 allows air circulation in the wire mesh cabinet 1. A baffle 12 is provided on one side of the side panel 11 to prevent external rainwater from entering the interior of the wire mesh cabinet 1. A mounting block 13 is connected to the bottom of the side panel 11. An adjusting rod 14 is connected to one side of the fixing block 13. The opening size of the side panel 11 is controlled by adjusting the length of the adjusting rod 14, thereby ventilating one side of the wire mesh cabinet 1.
[0030] A shielding device 2 is fixedly installed on the top of the wire mesh cabinet 1, and a bottom panel 4 is fixedly installed on the bottom of the wire mesh cabinet 1.
[0031] The protective mechanism of the ring main unit includes: a cabinet box 3 installed in the middle of the inside of the main unit 1; an inner cabinet box 31 is provided inside the cabinet box 3; mounting rails 33 are fixedly installed on both sides of the inner cabinet box 31; an equipment box 34 is provided on one side of the mounting rails 33; and an air column 32 is provided on the outside of the inner cabinet box 31; there are three sets of cabinet boxes 3 and a number of air columns 32; and the cabinet box 3 is located inside the inner box 5 of the main unit.
[0032] Specifically, the cabinet body 1 has a cabinet box 3 inside, and the cabinet box 3 has an inner cabinet box 31 inside. The inner cabinet box 31 has mounting rails 33 and equipment boxes 34 on both sides inside. The equipment boxes 34 enable the equipment circuit to run. The inner cabinet box 31 has an air column 32 on the outside. The air column 32 contains air and can protect the outside of the inner cabinet box 31 to prevent the equipment from being damaged by impact and vibration.
[0033] The waterproof isolation mechanism of the ring main unit includes: a telescopic window 51 installed inside one side of the ring main unit 1; the telescopic window 51 is installed on one side of the inner box 5 of the ring main unit, and the interior of the telescopic window 51 is provided with ventilation plates 52 at intervals; the upper and lower sides of the telescopic window 51 are provided with movable plates 53; a handle 54 is installed on one side of the telescopic window 51; and vertical grooves 55 are provided at equal intervals below the telescopic window 51; two sets of telescopic windows 51 are provided, and the telescopic windows 51 are both located on one side of the inner box 5 of the ring main unit, and the vertical grooves 55 are embedded on both sides of the inner box 5 of the ring main unit; the ventilation plates 52 are staggered front and back; the side panel 11 is the same size as the telescopic window 51, and the four vertices of the side panel 11 and the telescopic window 51 are located on the same horizontal line; and the fixing block 13 is installed on one side of the ring main unit 1; the interior of the side panel 11 is inlaid with grooves.
[0034] Specifically, the inner cabinet 5 is installed inside the cabinet body 1. A telescopic window 51 is provided on one side of the inner cabinet 5. There are two sets of telescopic windows 51, and one set of telescopic windows 51 is fixed. Ventilation plates 52 are provided at intervals inside each telescopic window 51. By staggering the front and back of the ventilation plates 52, one side of the telescopic window 51 can be closed or opened. When the outer telescopic window 51 needs to be closed, the outer telescopic window 51 is pulled to one side by the moving plate 53 and the handle 54. The ventilation plates 52 inside close one side of the cabinet body 1, preventing moisture in the air from entering.
[0035] During use, a shielding device 2 is installed on the top of the cabinet 1 to shield the top of the cabinet 1. The cabinet 1 contains an inner cabinet box 5 and a cabinet box 3. The cabinet box 3 contains an inner cabinet box 31. Mounting rails 33 and equipment boxes 34 are installed on both sides of the inner cabinet box 31. The equipment box 34 is the terminal of the line. An inflatable column 32 is installed on the outside of the inner cabinet box 31 to provide impact protection. Later, during use, a side panel 11 and a telescopic window 51 are installed on the left side of the cabinet 1 and the inner cabinet box 5, respectively. The side panel 11 and telescopic window 51 allow for air circulation inside the cabinet 1. A mounting block 13 is connected to the bottom of the side panel 11, and a mounting bracket 13 is connected to one side of the mounting block 13. The adjusting rod 14 controls the opening size of the side panel 11, allowing the wire mesh cabinet 1 to be opened according to weather conditions. In rainy weather, the opened side panel 11 allows direct access to the telescopic window 51. Two sets of telescopic windows 51 are provided, with one set being fixed and the outer set being opened or closed via a movable plate 53 and a handle 54. When the telescopic window 51 is open, the fixed telescopic window 51 allows for ventilation inside the wire mesh cabinet 1. When the telescopic window 51 is closed, the staggered ventilation plates 52 seal the telescopic window 51 to prevent moisture from entering. Finally, a vertical groove 55 is provided at the bottom of the inner box 5 of the wire mesh cabinet, allowing raindrops to flow directly down and be stored in the lower box 16.
[0036] 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 waterproof device for a ring main unit, comprising a ring main unit body (1), wherein a waterproof isolation mechanism for the ring main unit is installed on one side of the interior of the ring main unit body (1), and a protective mechanism for the ring main unit is installed in the middle of the interior of the ring main unit body (1), characterized in that, The waterproof isolation mechanism of the ring network cabinet includes: a telescopic window (51) installed on one side inside the cabinet body (1), the telescopic window (51) is installed on one side of the inner box (5) of the cabinet, and the telescopic window (51) is provided with a ventilation plate (52) at intervals inside, and the telescopic window (51) is provided with a movable plate (53) on both the upper and lower sides, a handle (54) is installed on one side of the telescopic window (51), and vertical grooves (55) are provided at equal intervals below the telescopic window (51); The protective mechanism of the ring main unit includes: a cabinet box (3) installed in the middle of the inside of the cabinet body (1), an inner cabinet box (31) is provided inside the cabinet box (3), and mounting rails (33) are fixedly installed on both sides of the inside of the inner cabinet box (31), and an equipment box (34) is provided on one side of the mounting rails (33), and an air column (32) is provided on the outside of the inner cabinet box (31).
2. The waterproof device for a ring main unit according to claim 1, characterized in that, A shielding device (2) is fixedly installed on the top of the wire mesh cabinet (1), and a bottom box plate (4) is fixedly installed on the bottom of the wire mesh cabinet (1).
3. The waterproof device for a ring main unit according to claim 1, characterized in that, The left side of the wire mesh cabinet (1) is provided with a side panel (11), and a baffle (12) is provided on one side of the side panel (11). Fixing blocks (13) are fixedly installed on both sides of the bottom of the side panel (11). An adjusting rod (14) is connected to one side of the fixing block (13). A bottom hole (15) is embedded in the bottom of the wire mesh cabinet (1), and a lower box (16) is connected to the bottom of the wire mesh cabinet (1).
4. A waterproof device for a ring main unit according to claim 1, characterized in that, Two sets of telescopic windows (51) are provided, and the telescopic windows (51) are located on one side of the inner box (5) of the wire mesh cabinet. The vertical grooves (55) are embedded on both sides of the inner box (5) of the wire mesh cabinet. The ventilation panels (52) are staggered front and back.
5. A waterproof device for a ring main unit according to claim 1, characterized in that, The cabinet box (3) is provided in three sets, and the number of air columns (32) is provided. The cabinet box (3) is located inside the inner box (5) of the wire mesh cabinet.
6. A waterproof device for a ring main unit according to claim 3, characterized in that, The side panel (11) and the telescopic window (51) are the same size, and the four vertices of the side panel (11) and the telescopic window (51) are located on the same horizontal line. The fixing block (13) is installed on one side of the cabinet body (1). The side panel (11) has a groove embedded inside.
7. A waterproof device for a ring main unit according to claim 3, characterized in that, The lower box (16) and the wire mesh cabinet (1) have the same length and width, and the shielding device (2) is installed at an angle above the wire mesh cabinet (1).
Citation Information
Patent Citations
Ring main unit waterproof device
CN219394102U