A high-low voltage switch cabinet bottom moisture-proof device

Abstract

The utility model relates to switchgear dampproof technical field, and disclose a kind of high-low voltage switchgear bottom dampproof device, including cabinet, multiple mounting holes being opened in the bottom of the cabinet, be located the threading conduit for installing cable in the inside of the cabinet, and the connecting joint for being adapted sealing with the threading conduit is installed in the inside of the mounting hole, the connecting joint is composed of clamping pipe, connecting cavity and adaptation board, and three are sequentially arranged from bottom to top, the clamping pipe is adapted with the mounting hole and is clamped, multiple annular lugs are fixedly arranged outside the clamping pipe, the section of multiple annular lugs is inverted trapezoidal that upper is big and lower is small, for the clamping pipe can be conveniently inserted and fastened in the inside of the mounting hole, the utility model is cooperated by clamping pipe and sealing valve, realizes pipeline quick installation and sealing, substantially improves sealing efficiency, while it is convenient for adaptive installation of different pipe diameter.

Description

Technical Field

[0001] This utility model relates to the field of moisture-proof switchgear, and in particular to a moisture-proof device for the bottom of high and low voltage switchgear. Background Technology

[0002] High and low voltage switchgear is a key piece of equipment in power systems used for power distribution, control, metering, and cable connection. It contains various precision electrical components such as circuit breakers, disconnectors, and instrument transformers. These components have high requirements for the dryness of the operating environment. A humid environment can easily lead to a decline in the insulation performance of components, corrosion of metal parts, and even serious faults such as short circuits and discharges, threatening the safe and stable operation of the power system. Currently, the bottom of switchgear usually has several reserved holes for the conduits (such as galvanized steel pipes and flexible conduits) of power cables and control cables. After the cable conduits are installed, there is usually annular gaps of varying sizes between the outer wall of the conduit and the holes in the bottom plate of the switchgear. If these gaps are not effectively sealed, they will become direct channels for ground moisture, water accumulation, and even small animals to enter the switchgear, posing a major risk of moisture buildup inside the cabinet.

[0003] Current technologies generally employ a manual sealing process. Workers cut suitable epoxy resin boards or fireproof partitions according to the size of the gap, assembling and covering them around the pipes to initially seal larger gaps. Then, a large amount of fireproof sealant (such as silicone sealant) is applied to the joints between the epoxy board and the pipe, and between the epoxy board and the cabinet base plate. After the sealant has initially cured, liquid sealant or epoxy resin is poured on top to form the final sealing layer. However, this traditional sealing method is cumbersome and inefficient. The entire process includes multiple steps such as measurement, cutting, assembly, sealant application, and pouring, heavily relying on manual labor, resulting in long processing times and high labor intensity. It is difficult to meet the needs of rapid on-site installation and commissioning, affecting the overall construction efficiency of power engineering. Furthermore, this method lacks adaptability and flexibility. The specifications (diameter) and number of pipes that need to be connected to the pre-drilled holes at the bottom of the switchgear may vary. Traditional methods require re-measurement and manual cutting for each new pipe diameter or combination, making it unsuitable for sealing components with varying pipe diameters and exhibiting poor versatility.

[0004] Therefore, a moisture-proof device for the bottom of high and low voltage switchgear was designed. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a moisture-proof device for the bottom of high and low voltage switchgear. It solves the problems of cumbersome operation, low efficiency, reliance on manual labor, unstable quality, difficulty in adapting to different pipe diameters, and maintenance difficulties associated with the manual cutting and gluing of epoxy boards used for sealing the bottom pipes of existing switchgear.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A moisture-proof device for the bottom of a high- and low-voltage switchgear includes a cabinet, multiple mounting holes at the bottom of the cabinet, a conduit inside the cabinet for installing cables, and a connecting joint installed inside the mounting holes for fitting and sealing with the conduit.

[0007] Preferably, the connecting joint consists of a retaining tube, a connecting cavity, and an adapter plate, and the three are arranged sequentially from bottom to top.

[0008] Preferably, the snap-fit ​​connector is fitted and snap-fitted into the mounting hole, and the snap-fit ​​connector is externally fixed with multiple annular protrusions.

[0009] Preferably, the cross-section of the plurality of annular protrusions is an inverted trapezoid with a larger top and a smaller bottom, so that the retaining tube can be easily inserted into and fastened inside the mounting hole.

[0010] Preferably, the plurality of the annular protrusions are made of rubber material, which has elasticity and sealing properties.

[0011] Preferably, the bottom of the connecting cavity is fixedly connected to the top of the card tube, and the adapter plate is fixedly connected to the top of the connecting cavity.

[0012] Preferably, the adapter plate is composed of a plurality of sealing valves arranged in a circular array, and each of the plurality of sealing valves is elastic.

[0013] Preferably, each of the multiple sealing valves has an arc-shaped protrusion extending inward from the center end, and the surface of each of the multiple arc-shaped protrusions is covered with a rubber layer.

[0014] Preferably, the conduit can be inserted from the central opening of the adapter plate and expand multiple sealing valves to open downwards. The outer wall of the conduit is in close contact with multiple arc-shaped protrusions to achieve a seal.

[0015] Preferably, the plurality of sealing valves and the arc-shaped protrusions can adaptively conform to the outer wall of the conduit of different diameters according to their own elasticity and the pressure they are subjected to.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model achieves rapid sealing by using the combination of the snap-fit ​​tube and the adapter plate, taking advantage of the elasticity and adaptability of the circular protrusion and the sealing valve itself. It can be achieved simply by inserting the snap-fit ​​tube into the installation hole and the wire conduit into the adapter plate, which greatly saves time and manpower and effectively avoids the problem of poor sealing caused by differences in manual operation. The valve-type sealing structure provides stable wrapping force and can be adapted to conduits of different diameters, greatly improving the versatility and adaptability of the device. It effectively solves the problem of frequently dealing with different pipe diameters on site. A single component can adapt to multiple pipeline specifications, reducing the complexity of material management and inventory costs, while facilitating the maintenance and replacement of pipelines in the future. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the fit between the carding tube and the sealing valve structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the connector of this utility model; Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of a local structure at point A; Figure 5 This is a schematic diagram showing the detailed structure of the sealing valve of this utility model.

[0019] Drawing number explanation: 1. Cabinet; 11. Mounting hole; 2. Connecting joint; 21. Snap-fit ​​pipe; 211. Circular protrusion; 22. Connecting cavity; 23. Adapter plate; 231. Sealing valve; 232. Arc-shaped protrusion; 3. Wiring conduit. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0022] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0023] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0024] Please see Figure 1-5 A moisture-proof device for the bottom of a high and low voltage switchgear includes a cabinet 1, a plurality of mounting holes 11 opened at the bottom of the cabinet 1, a cable conduit 3 located inside the cabinet 1 for installing cables, and a connecting joint 2 installed inside the mounting holes 11 for fitting and sealing with the cable conduit 3. The connecting connector 2 consists of a snap-fit ​​tube 21, a connecting cavity 22, and an adapter plate 23, which are arranged sequentially from bottom to top. The snap-fit ​​tube 21 is fitted and snapped into the mounting hole 11. Multiple annular protrusions 211 are fixedly provided on the outside of the snap-fit ​​tube 21. The cross-section of the multiple annular protrusions 211 is an inverted trapezoid with a larger top and a smaller bottom, which is used to make it easy to insert the snap-fit ​​tube 21 into and fasten it inside the mounting hole 11. The multiple annular protrusions 211 are made of rubber material, which has elasticity and sealing properties. The bottom of the connecting cavity 22 is fixedly connected to the top of the snap-fit ​​tube 21. The adapter plate 23 is fixedly connected to the top of the connecting cavity 22. The adapter plate 23 is composed of multiple sealing valves 231 arranged in a circular array. Each sealing valve 231 is elastic. The end of each sealing valve 231 near the center extends inward to form an arc-shaped protrusion 232. The surface of each arc-shaped protrusion 232 is covered with a rubber layer. The threading pipe 3 can be inserted from the central opening of the adapter plate 23 and open the multiple sealing valves 231 to make them open downward. The outer wall of the threading pipe 3 is tightly abutted against the multiple arc-shaped protrusions 232 to achieve a seal. The multiple sealing valves 231 and the arc-shaped protrusions 232 can adaptively fit the outer wall of the threading pipe 3 of different diameters according to their own elasticity and the pressure they are subjected to.

[0025] Among them, the connecting joint 2 is made of insulating material as a whole, and the clamping tube 21 and the annular protrusion 211 form an insulating sleeve. The annular protrusion 211 presents an umbrella-like shape, which improves safety.

[0026] When in use, first align the clamping tube 21 of the connector 2 with the mounting hole 11 at the bottom of the cabinet 1. Using its inverted trapezoidal cross-section and elastic annular protrusion 211, it can be quickly pressed into and fastened in the mounting hole 11 to achieve initial installation and sealing. Then, insert the wire conduit 3 vertically from the center opening of the adapter plate 23. During the insertion process, the outer wall of the conduit will naturally expand the adapter plate 23, which is composed of multiple elastic sealing valves 231, so that it is in a downward opening shape. At this time, the arc-shaped protrusion 232, which is fixed inside the sealing valve 231 and covered with a rubber layer, will tightly wrap around and abut against the outer wall of the wire conduit 3 to form multiple sealing contact surfaces.

[0027] Rapid sealing is achieved by utilizing the adaptive deformation of elastic materials. The retaining tube 21 with inverted trapezoidal rubber protrusions replaces the traditional method of manually sealing the installation hole, realizing rapid sealing installation between the connector itself and the cabinet installation hole 11. Adjustable sealing is achieved by the adapter plate 23 composed of multiple elastic sealing valves 231 and arc-shaped protrusions 232, which facilitates sealing adaptation for conduits 3 of different diameters. When the conduit 3 is inserted, the sealing valves 231 will undergo elastic deformation under the pressure of the outer wall of the conduit 3. The wrapping range and tightness will automatically adjust with the change of the diameter of the conduit 3, so that the connector 2 can effectively seal conduits 3 of different diameters within a certain range, improving the versatility of the device.

[0028] After use, liquid sealant or epoxy resin is poured onto the bottom of cabinet 1 and the top of adapter plate 23 to form a sealing layer, thereby improving sealing efficiency.

[0029] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A moisture-proof device for the bottom of a high- and low-voltage switchgear, characterized in that, Includes a cabinet (1), multiple mounting holes (11) at the bottom of the cabinet (1), a cable conduit (3) located inside the cabinet (1) for installing cables, and a connecting joint (2) installed inside the mounting holes (11) for fitting and sealing with the cable conduit (3).

2. The moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 1, characterized in that: The connecting joint (2) consists of a clamping tube (21), a connecting cavity (22), and an adapter plate (23), and the three are arranged sequentially from bottom to top.

3. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 2, characterized in that: The snap-fit ​​connector (21) is fitted and snap-fitted into the mounting hole (11), and multiple annular protrusions (211) are fixedly provided on the outside of the snap-fit ​​connector (21).

4. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 3, characterized in that: The cross-section of the plurality of the annular protrusions (211) is an inverted trapezoid with a larger top and a smaller bottom, which is used to allow the retaining tube (21) to be easily inserted into and fastened inside the mounting hole (11).

5. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 4, characterized in that: The plurality of the aforementioned annular protrusions (211) are made of rubber and are elastic and sealing.

6. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 5, characterized in that: The bottom of the connecting cavity (22) is fixedly connected to the top of the card tube (21), and the adapter plate (23) is fixedly connected to the top of the connecting cavity (22).

7. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 6, characterized in that: The adapter plate (23) is composed of a plurality of sealing valves (231) arranged in a circular array, and each of the plurality of sealing valves (231) is elastic.

8. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 7, characterized in that: Each of the multiple sealing valves (231) extends inward at one end near the center to form an arc-shaped protrusion (232), and the surface of each of the multiple arc-shaped protrusions (232) is covered with a rubber layer.

9. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 1, characterized in that: The threading conduit (3) can be inserted from the central opening of the adapter plate (23) and expand multiple sealing valves (231) to make it open downwards. The outer wall of the threading conduit (3) is in close contact with multiple arc-shaped protrusions (232) to achieve a seal.

10. A moisture-proof device for the bottom of a high- and low-voltage switchgear according to claim 9, characterized in that: The multiple sealing valves (231) and the arc-shaped protrusions (232) can adaptively conform to the outer wall of the threading pipe (3) of different diameters according to their own elasticity and the pressure they are subjected to.

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