Switch cabinet
By designing water-retaining weirs and drainage channels on the top plate of the low-voltage switchgear, the problem of water vapor intrusion caused by gaps between adjacent cabinets was solved, achieving a weld-free seal and improving the waterproof performance and ease of maintenance of the equipment.
Patent Information
- Application Number
- CN202423169042.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In humid environments, when multiple low-voltage switchgear units are arranged side by side, the gaps between adjacent cabinets can easily lead to moisture intrusion, affecting the stability and reliability of equipment operation. Existing welded pressure strip sealing methods have reliability issues and are difficult to maintain.
The design employs a self-contained structural component, including a water-retaining weir and a drainage channel. The water-retaining weir on the top plate is hooked to the adjacent cabinet, and combined with the drainage channels of the columns and beams, a complete seal is formed to prevent water vapor from entering.
The elimination of welding strips effectively prevents moisture from entering the cabinet, improving the equipment's waterproof performance and ease of maintenance, and enhancing its stability and reliability.
Smart Images
Figure CN223651827U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to low voltage electric appliance technical field, specifically related to a switch cabinet. BACKGROUND
[0002] Low voltage switch cabinet plays an indispensable important role in power system, which can be summarized as not limited to the following several: power distribution and conversion, control function, protection function, improve power supply reliability. Power distribution and conversion is to distribute the input power to meet the needs of different power users. It can distribute the low voltage power from the transformer to each power circuit according to the power equipment condition; Control function is to control the start and stop of various power equipment by the contactor, relay and other control elements installed in the cabinet; Protection function is to play the role of short circuit protection, overload protection and leakage protection device in the cabinet, when the fault occurs in the circuit, the protection device will act quickly and cut off the fault circuit, protect the equipment and line at the same time to ensure personnel safety; Improve power supply reliability refers to the realization of multi power supply switching, to achieve the purpose of uninterrupted power supply to important power places.
[0003] As known in the industry, when the switch cabinet is applied to the humid environment which is difficult to avoid or even cannot be avoided, the corrosion of metal parts will be significantly accelerated, and the mechanical strength and service life will be reduced. The invasion of water will also affect the normal operation of electrical equipment and electrical control elements in the cabinet, seriously reduce the stability and reliability of the power system, and even cause electrical short circuit, affect normal power supply, and even cause fire and cause personal safety and property loss accidents. Therefore, the waterproof performance or waterproof effect of low voltage switch cabinet is closely related to equipment damage, electrical short circuit, power interruption, overall service life and so on.
[0004] Still as known in the industry, a plurality of low voltage switch cabinets are arranged in the form of shoulder to shoulder and side by side, which is called double row low voltage switch cabinet layout, for example, a plurality of low voltage switch cabinets need to be arranged in the following occasions, such as not limited to the following occasions: high power demand, specifically, for places with relatively high power operation continuity requirements, parallel connection of multiple low voltage switch cabinets can ensure the stability and reliability of power supply; For example, the requirement for maintenance convenience is relatively strict, specifically, in some places where maintenance and fault diagnosis are often carried out, multiple low voltage switch cabinets can be arranged to facilitate equipment maintenance and repair; For example, there is an expansion requirement, specifically, considering the possibility of adding equipment in the future, multiple low voltage switch cabinets can be arranged to facilitate system expansion and upgrading.
[0005] However, the above-mentioned arrangement of multiple low-voltage switch cabinets one next to another, although meeting the requirements of the above-mentioned application sites not limited by the examples, still faces the same problem that when multiple low-voltage switch cabinets are arranged one next to another, due to the fact that the two adjacent low-voltage switch cabinets cannot be seamlessly attached to each other, water vapor or even water will enter from the extremely tiny gap between the two adjacent low-voltage switch cabinets and cause many influences on the low-voltage switch cabinets. The current solution to this technical problem is to block water by welding a similar pressing strip, but the sealing performance of welding is always a matter of concern because once the sealing between the sealing pressing strip and the cabinet top is unreliable, there is still a risk of water intrusion, which requires strict inspection and necessary testing of the welded part; the welding is relatively difficult because it needs to be implemented by someone with a certain level of experience, and if the welding is not proper, it may cause unreliable connection between the sealing pressing strip and the cabinet top, resulting in incomplete welding and false welding, and the so-called "hollow" situation; the appearance may be affected, which may become a problem for occasions with high appearance requirements; maintenance is difficult because once the welding is completed, it brings trouble to subsequent maintenance or replacement of some parts of the low-voltage switch cabinet. Based on the foregoing factors not limited, the measure of welding the pressing strip to obtain waterproof sealing cannot be recognized, but only because there is no other way to replace it. Content of the utility model
[0006] The task of the utility model is to provide a structure that is integrated with the cabinet top and obtained by reasonable design, which can completely prevent the intrusion of humid water droplets and water from the gap between the cabinet tops of two adjacent cabinet bodies into the switch cabinet.
[0007] The task of the utility model is accomplished in this way, a switch cabinet, comprising a frame, the frame comprising longitudinally arranged columns and cross beams connected between two adjacent columns, further comprising a top plate, the top plate being fixed above the cross beams, a water retaining weir protruding from the upper surface of the top plate is formed at the left edge of the top plate, a water draining recess is formed between the right side surface of the water retaining weir and the top plate, and a top plate splicing hooking edge bent downward is formed at the right edge of the top plate for hooking with the right side surface of the water retaining weir of an adjacent low-voltage switch cabinet.
[0008] In a specific embodiment of the utility model, a column water draining groove is formed on the column and along the height direction of the column for leading out the water drained by the water draining recess, and a cross beam water draining groove is formed on the cross beam and along the length direction of the cross beam for directly draining the water drained by the water draining recess or transitioning the water to the column water draining groove for being drained by the column water draining groove.
[0009] In another specific embodiment of the utility model, the crossbeam drainage groove is composed of the crossbeam folding edge which is located at the length direction of the crossbeam and is folded upward to the direction of the bottom surface of the drainage recess located at the upper portion thereof.
[0010] In still another specific embodiment of the utility model, the upper surface of the water retaining weir is covered by the top plate splicing hooking edge in the state of mutual hooking with the water retaining weir in the drainage recess on the adjacent low-voltage switch cabinet.
[0011] In still another specific embodiment of the utility model, the cross section shape of the water retaining weir together with the drainage recess is L-shaped.
[0012] In still another specific embodiment of the utility model, the cross section of the crossbeam drainage groove composed of the crossbeam folding edge is U-shaped.
[0013] In still another specific embodiment of the utility model, the cross section shape of the drainage recess is U-shaped.
[0014] In still another specific embodiment of the utility model, the cross section shape of the column drainage groove is U-shaped.
[0015] The technical gist of the technical scheme provided by the utility model lies in that: a water retaining weir protruding from the upper surface of the top plate is formed at the left edge portion of the top plate, a drainage recess recessed in the top plate is formed between the right side surface of the water retaining weir and the top plate, and a top plate splicing hooking edge with a ┐-shaped cross section for mutually hooking with the left side surface of the water retaining weir of an adjacent low-voltage switch cabinet is formed at the right edge portion of the top plate, so that when two adjacent low-voltage switch cabinets are arranged, external water cannot enter the gap between the two adjacent low-voltage switch cabinets, and compared with the prior art, the gap between the cabinet tops of the adjacent low-voltage switch cabinets can be reliably and completely covered without welding a pressing strip, and external water can be completely prevented from flowing down from the gap between the top plates of the two adjacent low-voltage switch cabinets and invading into the cabinet. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is an embodiment schematic view of the utility model switch cabinet;
[0017] Figure 2 It is an embodiment schematic view of the utility model switch cabinet; Figure 1 It is an enlarged view of A part of the utility model switch cabinet;
[0018] Figure 3 It is an embodiment schematic view of the utility model switch cabinet; Figure 1
[0019] Figure 4 It is an embodiment schematic view of the utility model switch cabinet;Figure 1 schematic view of the frame of the switch cabinet shown;
[0020] Figure 5 for Figure 1 and Figure 2 schematic view of the column shown;
[0021] Figure 6 for Figure 1 and Figure 2 schematic view of the crossbeam shown;
[0022] Figure 7 for the application example of the utility model;
[0023] Figure 8 for Figure 7 B part of the enlarged view. DETAILED DESCRIPTION
[0024] In order to enable the technical essence and beneficial effects of the utility model to be understood more clearly, the applicant will make a detailed description in the following manner by way of examples, but the description of the examples is not a limitation on the utility model scheme, and any equivalent transformation only in form but not in substance made according to the utility model concept should be regarded as the technical scheme category of the utility model.
[0025] In the following description, the directional or positional concepts of up, down, left, right, front and back are all based on the position state of the current by Figure 1 Therefore, it should not be understood as a special limitation on the technical scheme provided by the utility model.
[0026] Example 1:
[0027] Please refer to Figures 1 to 6 , which shows the frame 1, the door plate 2 and the sealing strip 3, the aforementioned frame 1 includes the vertically arranged column 11 and the crossbeam 12 connected between each two adjacent columns 11, and the aforementioned sealing strip 3 is embedded between the door plate 2 and the crossbeam 12 and the frame 1 formed by the connection of the crossbeam 12 and the column 11.
[0028] As the technical points provided by the utility model: in the structural system of the switch cabinet, there is also a top plate 4, which is fixed above the aforementioned frame 1, and a weir 41 protruding from the upper surface of the top plate 4 is formed at the left side edge part of the top plate 4, and a drainage recess 411 recessed in the top plate 4 is formed between the right side surface of the weir 41 and the top plate 4, and a downwardly bent top plate splicing hooking edge 42 for hooking with the right side surface of the aforementioned weir 41 of an adjacent low-voltage switch cabinet is formed at the right side edge part of the top plate 4. Figure 8
[0029] A column drain groove 111 is formed on the column 11 and along the height of the column 11 for draining the water drained by the drain recess 411, and a beam drain groove 121 is formed on the beam 12 and along the length of the beam 12 for draining the water drained by the drain recess 411 directly or via the column drain groove 111.
[0030] The beam drain groove 121 is formed by a beam folded edge 122 on both sides of the length of the beam 12 and folded upward toward the bottom surface of the drain recess 411 on the upper portion thereof. The upper surface of the beam folded edge 122 is combined with the bottom surface of the side of the drain recess 411 facing downward to increase the contact area with the sealing strip 3.
[0031] The top plate splicing hooking edge 42 covers the upper surface of the water retaining weir 41 in the state of being hooked with the water retaining weir 41 in the drain recess 411 on the adjacent low-voltage switch cabinet (see Figure 7 and Figure 8 ).
[0032] The cross-sectional shape of the water retaining weir 41 formed together with the drain recess 411 is L-shaped. The cross-sectional shape of the beam drain groove 121 formed by the beam folded edge 122 is U-shaped; the cross-sectional shape of the drain recess 411 is U-shaped; and the cross-sectional shape of the column drain groove 111 is U-shaped.
[0033] Application example:
[0034] Please refer to Figure 7 and Figure 8 and in combination with Figures 1 to 6 , two switch cabinet bodies 5 are shown in Figure 7 arranged in a shoulder-to-shoulder manner, when the two switch cabinet bodies 5 are arranged side by side with each other, Figure 7 the top plate splicing hooking edge 42 on the right side of the top plate 4 of the left switch cabinet body 5 is hooked into the drain recess 411 on the left side of the top plate 4 of the right switch cabinet body 5, i.e., is hooked with the water retaining weir 41. When water enters the drain recess 411, it is discharged to the beam drain groove 121 and / or the column drain groove 111 by the drain recess 411. And because the gap between the top plates 4 of the two adjacent switch cabinet bodies 5 is completely shielded, water cannot enter the cabinet along the gap, and the deficiencies in the prior art mentioned by the applicant in the background art column are completely eliminated.
[0035] In summary, the technical scheme provided by the utility model makes up for the defects in the prior art, successfully completes the invention task, and truly realizes the technical effects described in the technical effect column above.
Claims
1. Switchgear cabinet comprising a frame (1) comprising uprights (11) arranged longitudinally and crosspieces (12) connected between each two adjacent uprights (11), characterized in that Further comprising a top plate (4) fixed above the cross beam (12), a weir (41) protruding from the upper surface of the top plate (4) is formed at the left edge of the top plate (4), a water discharge groove (411) recessed from the top plate (4) is formed between the right side surface of the weir (41) and the top plate (4), and a top plate splicing hooking edge (42) bent downward is formed at the right edge of the top plate (4) for hooking with the right side surface of the weir (41) of an adjacent low-voltage switch cabinet.
2. Switchgear according to claim 1, characterized in that A column water discharge groove (111) for discharging water discharged from the water discharge groove (411) is formed on the column (11) and along the height direction of the column (11), and a cross beam water discharge groove (121) for directly discharging water discharged from the water discharge groove (411) or passing the water discharged from the water discharge groove (411) to the column water discharge groove (111) and then discharging the water from the column water discharge groove (111) is formed on the cross beam (12) and along the length direction of the cross beam (12).
3. Switchgear according to claim 2, characterized in that: The cross beam water discharge groove (121) is formed by cross beam folding edges (122) located on both sides of the length direction of the cross beam (12) and folded upward toward the bottom surface of the water discharge groove (411) located at the upper part thereof.
4. A switchgear cabinet according to claim 1, characterized in that: The upper surface of the weir (41) is covered by the top plate splicing hooking edge (42) in the state of being hooked with the weir (41) in the water discharge groove (411) on the adjacent low-voltage switch cabinet.
5. A switchgear cabinet according to claim 1 or 4, characterised in that: The cross-sectional shape of the weir (41) and the water discharge groove (411) is L-shaped.
6. A switchgear cabinet according to claim 3, characterised in that: The cross-sectional shape of the cross beam water discharge groove (121) formed by the cross beam folding edges (122) is U-shaped.
7. A switchgear cabinet according to claim 5, characterised in that: The cross-sectional shape of the water discharge groove (411) is U-shaped.
8. A switchgear cabinet according to claim 2, characterised in that: The cross-sectional shape of the column water discharge groove (111) is U-shaped.