A power switch cabinet for digital rural construction

Abstract

The present invention discloses an electric switch cabinet for digital rural construction, which relates to the technical field of electric switch cabinets, including a housing, a modularly designed drawer and a functional unit cavity for accommodating the drawer, an isolation baffle is arranged in the gap between two upper and lower adjacent drawers, and connecting collars are arranged at the four corners of the isolation baffle, which are sleeved with a vertically arranged lifting column, and the top and bottom ends of the lifting column are arranged with fixed feet for connecting with the inner wall of the functional unit cavity; a hydraulic controller is arranged at the cavity wall on the rear side of the functional unit cavity, and the oil cavity of the hydraulic controller is connected with the active piston and the driven piston, and the end of the active piston abuts against the drawer; the end of the driven piston is connected to the isolation baffle through a connecting frame. When the drawer of this type of switch cabinet is pulled out, the isolation baffle can automatically seal the drawer below, and detach when the drawer is inserted, thereby improving the safety and heat dissipation performance of the switch cabinet.

Description

Technical Field

[0001] The invention relates to the technical field of power switch cabinets, in particular to a power switch cabinet used for digital village construction. Background Art

[0002] Digital villages are an endogenous process of agricultural and rural modernization and transformation that is accompanied by the application of networking, informatization and digitalization in the economic and social development of agriculture and rural areas, as well as the improvement of farmers' modern information skills.

[0003] In the process of digital rural construction, low-voltage switchgear is often needed in the power management system. The switchgear is an electrical equipment. The external line of the switchgear first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. The main function of the switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and power conversion in the power system. Most of the industrial switchgear currently produced are drawer-type switchgear. The drawer-type switchgear is a closed shell made of steel plate. The electrical components of the incoming and outgoing line circuits are installed in the removable drawers to form a functional unit that can complete a certain type of power supply task. The functional unit is separated from the busbar or cable by a grounded metal plate or a functional board made of plastic to form three areas of busbar, functional unit and cable. There are also isolation measures between each functional unit. The drawer-type switchgear has high reliability, safety and interchangeability. It is a relatively advanced switchgear. They are suitable for industrial and mining enterprises and high-rise buildings that require high power supply reliability as a centralized control distribution center.

[0004] The drawers of drawer-type switch cabinets are usually designed in a modular manner, with high versatility and flexibility; the electrical functional units in each drawer can be independently connected to the busbar and cable. During the equipment inspection and maintenance process, it is only necessary to close the gate of the functional unit that has failed or needs to be repaired, open the safety interlock, and then pull out the drawer of the functional unit. It is very convenient for power engineers to operate.

[0005] Although the drawer-type switch cabinet has the advantages of safety, reliability, high flexibility, and convenient maintenance, it also has some disadvantages. For example, when the drawer of a single functional unit is opened, the equipment cavity at the drawer is in an open state, and for the purpose of heat dissipation and equipment maintenance, the drawer of the drawer-type switch cabinet is generally not provided with a compartment cover. At this time, the drawer below the drawn drawer is prone to dust, or due to contact with people or other objects, a short circuit or other electrical accidents may occur in the functional unit in the drawer. Summary of the invention

[0006] The purpose of the present invention is to provide a power switch cabinet for digital rural construction, specifically a low-voltage drawer-type switch cabinet electrical equipment, which has better safety protection performance and overcomes the defects in the prior art.

[0007] In order to achieve the above object, the technical solution of the present invention is as follows:

[0008] A power switch cabinet comprises a shell, a modularly designed drawer and a functional unit cavity for accommodating the drawer, an isolation baffle is arranged in the gap between two adjacent drawers, the size of the isolation baffle matches the size of the internal cavity of the drawer, connecting rings are arranged at the four corners of the isolation baffle, the connecting rings are sleeved with a vertically arranged lifting column, and the top and bottom ends of the lifting column are arranged with fixed feet for connecting with the inner wall of the functional unit cavity; a hydraulic controller is arranged at the cavity wall on the rear side of the functional unit cavity, and an active piston and a driven piston are respectively arranged on the top and side of the hydraulic controller, the inner ends of the active piston and the driven piston are connected to the internal oil cavity of the hydraulic controller, and hydraulic oil is built in the oil cavity, the active piston is arranged along the pulling direction of the drawer, and the external power end of the active piston abuts against the drawer; the driven piston is arranged in the vertical direction, and the external power end of the driven piston is connected to the isolation baffle through a connecting frame.

[0009] Furthermore, the connecting frame includes "L"-shaped brackets at both ends, the top ends of the brackets are connected by a cross bar, the cross bar is connected to the external power end of the driven piston in the hydraulic controller, and the other end of the bracket is fixedly connected to the middle section of the side of the isolation baffle.

[0010] Furthermore, an elastic member is arranged between the top end of the lifting column and the connecting collar. When the elastic member is in a natural state, the connecting collar is located at the bottom end of the lifting column.

[0011] Furthermore, a plurality of protruding hooks are arranged on the upper surface of the isolation baffle along the pulling direction of the drawer; a limit lock for rotating opening and closing is arranged on the drawer, and a lock head of the limit lock is located on the panel at the front of the drawer, and the lock head is connected to a through rod provided at the bottom of the drawer, and a plurality of hook fitting bodies corresponding to the positions of the hooks on the isolation baffle are arranged at intervals on the through rod.

[0012] Furthermore, a plurality of magnetic bodies are evenly arranged on the top of the drawer side wall, and a magnetic body opposite to the isolation baffle is arranged on the lower surface of the isolation baffle.

[0013] Furthermore, ventilation holes or slits for heat dissipation are provided on the side walls and the bottom plate of the drawer.

[0014] Preferably, the isolation baffle is a metal flat plate or a flat plate made of a transparent resin material, and the isolation baffle is grounded.

[0015] Compared with the prior art, the drawer-type switch cabinet electrical equipment of the present invention has the following beneficial effects:

[0016] An isolation baffle is provided between the upper and lower adjacent drawers of the drawer-type switch cabinet, and the isolation baffle is connected to the hydraulic controller through a connector. When the upper drawer is pulled out, the isolation baffle moves downward to close the lower drawer, thereby improving the isolation and protection performance of the equipment, avoiding electrical accidents to personnel, and ensuring the safe and stable operation of the functional units in the drawers. When the upper drawer is reinserted into the functional unit cavity, the isolation baffle will bounce upward again, thereby maintaining an appropriate interval between the drawers, which is convenient for heat dissipation and cooling of the functional units in the drawers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 is a structural schematic diagram of a drawer-type switch cabinet in this embodiment;

[0019] Figure 2 Schematic diagram of the disassembly of the structures such as the isolation baffle, the hydraulic controller, the connecting frame and the drawer in this embodiment;

[0020] Figure 3 It is a schematic diagram of the assembly of the hydraulic controller = connecting frame and isolation baffle in this embodiment;

[0021] Figure 4 Schematic diagram of the structure of the isolation baffle and the limit lock in this embodiment;

[0022] Figure 5 is a schematic diagram of the assembly of the mounting frame and the hydraulic controller in this embodiment;

[0023] Figure 6 It is a structural diagram of a hydraulic controller;

[0024] Figure 7 It is a schematic diagram of the structure of the hydraulic controller (the drawer is in contact with the active piston).

[0025] The markings in the figure are:

[0026] 1. Shell; 11. Functional unit cavity;

[0027] 2. Drawer; 21. Magnetic body;

[0028] 3. Isolation baffle; 31. Connecting ring; 32. Lifting column; 33. Hook; 322. Elastic part.

[0029] 4. Hydraulic controller; 41. Oil chamber; 42. Active piston; 43. Slave piston;

[0030] 5. Connecting frame; 51. Crossbar; 52. Bracket;

[0031] 6. Limit lock; 61. Through rod; 62. Hook fitting body. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] Example 1

[0034] This embodiment provides a power switch cabinet for digital rural construction, such as Figure 1 and Figure 2 As shown, it includes a power switch cabinet. Specifically, the switch cabinet includes a housing 1, a modularly designed drawer 2 and a functional unit cavity 11 for accommodating the drawer 2. An isolation baffle 3 is arranged in the gap between two upper and lower adjacent drawers 2. The size of the isolation baffle 3 matches the size of the drawer 2. Connecting rings 31 are arranged at the four corners of the isolation baffle 3. The connecting ring 31 is sleeved with a vertically arranged lifting column 32. The top and bottom ends of the lifting column 32 are provided with fixing feet 321 for connecting to the inner wall of the functional unit cavity 11.

[0035] like Figure 3 and Figure 5 As shown, a hydraulic controller 4 is arranged at the cavity wall on the rear side of the functional unit cavity 11, and an active piston 42 and a driven piston 43 are respectively arranged on the top and the side of the hydraulic controller 4, and the inner ends of the active piston 42 and the driven piston 43 are connected to the internal oil cavity 41 of the hydraulic controller 4, and the oil cavity 41 is filled with hydraulic oil. The active piston 42 is arranged along the pulling direction of the drawer 2, and the external power end of the active piston 42 abuts against the drawer 2; the driven piston 43 is arranged along the vertical direction, and the external power end of the driven piston 43 is connected to the isolation baffle 3 through the connecting frame 5. The structure and working principle of the hydraulic controller 4 are shown in FIG. Figure 6-Figure 7 shown.

[0036] In this embodiment, the connecting frame 5 includes an "L"-shaped bracket 52 at both ends. The top of the bracket 52 is connected by a cross bar 51, and the cross bar 51 is connected to the external power end of the driven piston 43 in the hydraulic controller 4. The other end of the bracket 52 is fixedly connected to the middle section of the side of the isolation baffle 3.

[0037] Based on the above, when the drawer-type switch cabinet of this embodiment is used, if the operator needs to inspect the functional unit in a drawer 2, after the drawer 2 is opened, due to the effect of gravity, the isolation baffle 3 naturally falls down, thereby sealing and isolating the upper opening of the drawer 2 below the drawer 2, thereby preventing the drawer 2 below from being exposed, causing electrical safety hazards, or affecting the normal operation of the equipment due to external factors;

[0038] After the operator completes the inspection, the user reinserts the drawer 2, and the rear side of the drawer 2 presses against the hydraulic controller 4, so that the active piston 42 is compressed, and the driven piston 43 is pushed upward by the action of the oil cylinder, and the isolation baffle 3 is lifted through the transmission action of the connecting frame 5, so that the isolation baffle 3 is separated from the drawer 2 below, ensuring the normal heat dissipation and operation of the drawer 2 below.

[0039] The number of hydraulic controllers 4 can be single or multiple. The main function of the hydraulic controller 4 is to lift up the isolation baffle on the lower drawer 2 after the user inserts the upper drawer 2. Therefore, the more hydraulic controllers 4 there are, the more uniform and stable the adjustment process will be. However, an increase in the number of hydraulic controllers 4 will significantly increase the cost. Therefore, the number of hydraulic controllers 4 can be set according to actual needs.

[0040] In this embodiment, an elastic member 322 is disposed between the top end of the lifting column 32 and the connecting collar 31 . When the elastic member 322 is in a natural state, the connecting collar 31 is located at the bottom end of the lifting column 32 .

[0041] An elastic member 322 is provided between the top of the lifting column 32 and the connecting collar 31. The elastic member 322 will exert a downward force on the connecting collar 31 in a natural state, thereby ensuring that the isolation baffle 3 can be closed with the lower drawer 2 after the upper drawer 2 is pulled out, thereby improving the sealing isolation effect. When the drawer 2 is inserted, the drawer 2 abuts against the active piston 42, so that after the hydraulic controller 4 lifts the isolation baffle 3 upward, the elastic member 322 can also make the lifting and lowering of the isolation baffle 3 more uniform, thereby reducing the sense of frustration.

[0042] like Figure 4As shown, a plurality of protruding hooks 33 are provided on the upper surface of the isolation baffle 3 along the pulling direction of the drawer 2; a limit lock 6 for rotating opening and closing is provided on the drawer 2, and the lock head of the limit lock 6 is located on the panel at the front of the drawer 2, and the lock head is connected to a through rod 61 provided at the bottom of the drawer 2, and a plurality of hook fitting bodies 62 corresponding to the positions of the hooks 33 on the isolation baffle 3 are provided on the through rod 61 at intervals. Among them, the function of the hook 33 is to lock the isolation baffle 3 and the upper drawer 2. When the upper drawer 2 needs to be pulled out, the limit lock 6 must be opened first, thereby improving the safety protection performance of the equipment and avoiding safety hazards caused by misoperation. The limit lock 6 is opened and closed by rotating the through rod 61 with the lock head, thereby connecting or disconnecting the hook 33 and the hook fitting body 62.

[0043] The side walls and the bottom plate of the drawer 2 are provided with ventilation holes or slits for heat dissipation.

[0044] The main function of the drawer 2 is to accommodate an independent electrical control functional unit. Therefore, in order to facilitate heat dissipation and cooling, heat dissipation holes or gaps need to be provided on the side walls of the drawer 2.

[0045] The isolation baffle 3 is a metal flat plate or a flat plate made of a transparent resin material, and the isolation baffle 3 is grounded.

[0046] The isolation baffle 3 may be made of a metal plate to improve its structural strength, or a transparent resin plate for easy observation; in order to improve the protective performance and prevent electrification, the isolation baffle 3 generally needs to be grounded.

[0047] Example 2

[0048] Based on the above embodiment 1, see again Figure 2 As shown, in this embodiment 2, a plurality of magnetic bodies 21 are evenly arranged on the top of the side wall of the drawer 2, and a magnetic body 21 opposite to the isolation baffle 3 is arranged on the lower surface thereof. The function of the magnetic body 21 is to make the isolation baffle 3 and the lower drawer 2 seal more tightly, thereby further improving the sealing partition effect of the switch cabinet.

[0049] In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "multiple" is two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "top", "bottom", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a circuit connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power switch cabinet for digital rural construction, characterized by: The switch cabinet comprises a housing (1), a modularly designed drawer (2) and a functional unit cavity (11) for accommodating the drawer (2); an isolation baffle (3) is arranged in the gap between two upper and lower adjacent drawers (2); the size of the isolation baffle (3) matches the size of the inner cavity of the drawer (2); connecting rings (31) are arranged at the four corners of the isolation baffle (3); the connecting rings (31) are sleeved with a vertically arranged lifting column (32); and the top and bottom ends of the lifting column (32) are provided with fixing feet for connecting to the inner wall of the functional unit cavity (11); A hydraulic controller (4) is arranged at the cavity wall at the rear side of the functional unit cavity (11); an active piston (42) and a passive piston (43) are respectively arranged at the top and the side of the hydraulic controller (4); the inner ends of the active piston (42) and the passive piston (43) are connected to the internal oil cavity (41) of the hydraulic controller (4); the oil cavity (41) contains hydraulic oil; the active piston (42) is arranged along the pulling direction of the drawer (2); the external power end of the active piston (42) is in contact with the drawer (2); the passive piston (43) is arranged along the vertical direction; the external power end of the passive piston (43) is connected to the isolation baffle (3) through a connecting frame (5); The upper surface of the isolation baffle (3) is provided with a plurality of protruding hooks (33) along the pulling direction of the drawer (2); a limit lock (6) for rotational opening and closing is provided on the drawer (2); a lock head of the limit lock (6) is located on a panel at the front of the drawer (2); the lock head is connected to a through rod (61) provided at the bottom of the drawer (2); and a plurality of hook fitting bodies (62) corresponding to the positions of the hooks (33) on the isolation baffle (3) are arranged at intervals on the through rod (61).

2. The power switch cabinet for digital rural construction according to claim 1 is characterized in that: The connecting frame (5) comprises an L-shaped bracket (52) at both ends, the top end of the bracket (52) is connected via a cross bar (51), the cross bar (51) is connected to the external power end of the driven piston (43) in the hydraulic controller (4), and the other end of the bracket (52) is fixedly connected to the middle section of the side of the isolation baffle (3).

3. The power switch cabinet for digital rural construction according to claim 1 is characterized in that: The number of the hydraulic controllers (4) is set to be single or multiple.

4. The power switch cabinet for digital rural construction according to claim 1 is characterized in that: An elastic member (322) is arranged between the top end of the lifting column (32) and the connecting collar (31); when the elastic member (322) is in a natural state, the connecting collar (31) is located at the bottom end of the lifting column (32).

5. The power switch cabinet for digital rural construction according to claim 1 is characterized in that: A plurality of magnetic bodies (21) are evenly arranged on the top of the side wall of the drawer (2), and a magnetic body (21) opposite to the isolation baffle (3) is arranged on the lower surface of the isolation baffle (3).

6. The electric switch cabinet for digital rural construction according to claim 1 is characterized in that: The side walls and the bottom plate of the drawer (2) are both provided with ventilation holes or slits for heat dissipation.

7. The power switch cabinet for digital rural construction according to claim 1 is characterized in that: The isolation baffle (3) is a metal flat plate or a flat plate made of a transparent resin material, and the isolation baffle (3) is grounded.

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