Change-over switch box

Abstract

The utility model belongs to the field of change-over switch boxes, and particularly relates to a change-over switch box. Comprising a box body, the interior of the box body comprises a cabinet front layer and a cabinet rear layer, the cabinet front layer is arranged in front of the cabinet rear layer, electrical elements are installed on the cabinet front layer, and cables are contained in the cabinet rear layer; a maintenance door is arranged on the front face of the box body and corresponds to the cabinet front layer, so that the cabinet front layer is opened or closed. The utility model provides a change-over switch box, and aims to solve the problem of inconvenience in maintenance when a change-over switch cabinet is arranged against a wall in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of changeover switch boxes, and specifically relates to a changeover switch box. Background Technology

[0002] The Integrated Power Supply (IDS) system is a crucial component of a nuclear power plant's power system, providing reliable uninterrupted power to plant-related instrumentation, control, monitoring, and other safety-grade equipment. It also provides normal and emergency lighting to the main control room. In the event of a complete loss of AC power and a design-based accident, the IDS system can provide reliable power for a safe plant shutdown without the need for battery chargers. It can also ensure a safe plant shutdown in the event of a single fault. The transfer switch box is an important part of the IDS system, primarily used for battery testing, offline equalization charging, and equipment maintenance.

[0003] In existing technology, maintenance doors are installed on both the front and back of the switch box to facilitate the maintenance of electrical components such as fuses inside. When maintenance is required, the maintenance door on the front or back of the switch box can be opened.

[0004] However, in practice, the installation location of transfer switch boxes is often limited, so they need to be installed against a wall. When the transfer switch box is installed against a wall, the back of the transfer switch box is obstructed, and the maintenance door on the back of the transfer switch box cannot be opened, making maintenance of the transfer switch box difficult. Utility Model Content

[0005] This utility model provides a transfer switch box, the purpose of which is to solve the problem that it is inconvenient to maintain when the transfer switch cabinet is installed against the wall in the prior art.

[0006] To achieve the above objectives, this utility model provides a transfer switch box, including a box body, the box body having a front cabinet layer and a rear cabinet layer inside, the front cabinet layer being located in front of the rear cabinet layer, the front cabinet layer housing electrical components in an electrically connected state, and the rear cabinet layer accommodating connecting cables.

[0007] The front of the cabinet is provided with a maintenance door, which is used to open or close the front layer of the cabinet.

[0008] In this design, the electrical components requiring maintenance are located on the front layer of the cabinet, while the rear layer houses the cables used for electrical connections. A maintenance door is provided corresponding to the front layer, allowing access to it. When the transfer switch box is placed against a wall, maintenance of the internal electrical components can also be achieved through the maintenance door on the front of the box.

[0009] Preferably, to prevent operators from accidentally coming into contact with other electrical components during maintenance or repair, the front layer of the cabinet in this solution includes several mutually isolated installation chambers, which are used for the installation of electrical components.

[0010] This solution involves setting up isolated installation chambers at the front of the cabinet, with electrical components installed inside each chamber. Therefore, during maintenance and repair, operators can perform maintenance and repairs on the electrical components in each installation chamber separately, reducing the risk of operators accidentally touching other electrical components and improving operator safety.

[0011] Preferably, to avoid interference with other electrical components during maintenance, the maintenance doors in this solution are installed in a one-to-one correspondence with the installation chambers.

[0012] Preferably, for the changeover switchgear to operate normally, the electrical components described in this solution include a DC circuit breaker in an electrically connected state, a battery test socket, an insulation monitoring unit, and a fuse.

[0013] Preferably, since the transfer switch box needs to be electrically connected to the outside, the installation room described in this solution includes a cable installation and maintenance channel, which is located on the upper part of the front layer of the cabinet.

[0014] This cable installation and maintenance channel allows for cable installation and maintenance, making it convenient to use.

[0015] Preferably, for the installation of DC circuit breakers, the installation room in this scheme includes a functional unit room, which is located in the middle of the front layer of the cabinet.

[0016] This design incorporates functional unit compartments for the installation of DC circuit breakers. Furthermore, the location of these compartments at the front of the cabinet facilitates maintenance of the DC circuit breakers.

[0017] Preferably, in order to provide for the installation and maintenance of the battery test socket, the installation room in this solution includes a battery test socket room, which is located in the lower part of the front layer of the cabinet.

[0018] This design includes a battery test socket compartment for installing battery test sockets. Furthermore, the compartment's location at the front of the cabinet facilitates maintenance of the battery test sockets.

[0019] For the purpose of installing and maintaining the insulation monitoring device, the installation room described in this plan includes an insulation monitoring unit room, which is located in the lower part of the front layer of the cabinet.

[0020] This design incorporates an insulation monitoring unit compartment for the installation of insulation monitoring devices. Furthermore, the compartment's location at the front of the cabinet facilitates maintenance of the insulation monitoring devices.

[0021] For the purpose of installing and maintaining fuses, the installation room described in this plan includes a fuse installation and maintenance room, which is located in the lower part of the front layer of the cabinet.

[0022] This design includes a fuse installation and maintenance room for fuse installation. Furthermore, the location of this room on the front shelf of the cabinet facilitates fuse maintenance.

[0023] Preferably, since the front layer of the cabinet needs to be opened for maintenance of electrical components, in order to prevent impurities from entering the rear layer of the cabinet when the front layer is opened, a partition is provided between the front layer and the rear layer of the cabinet in this solution, and the partition separates the front layer and the rear layer of the cabinet.

[0024] This solution uses a partition to separate the front and rear layers of the cabinet. When the front layer is open, the partition separates the front and rear layers, preventing impurities from entering the rear layer.

[0025] Preferably, in order to increase the seismic resistance of the entire enclosure, the enclosure in this solution includes three mounting brackets, which are rectangular frames arranged sequentially.

[0026] The enclosure in this design is formed by combining three mounting brackets, which increases the overall seismic resistance of the enclosure.

[0027] Preferably, in order to achieve heat dissipation inside the box, the box structure of this solution has an air inlet and an air outlet, which are used for heat dissipation through gas flow.

[0028] This design includes an air inlet and an air outlet for gas flow. During the gas flow, the airflow dissipates heat from the electrical components inside the enclosure.

[0029] The air inlet of this design is located at the bottom front of the cabinet, and the air outlet of this design is located at the top back of the cabinet.

[0030] The advantages of this invention are as follows: In this design, the electrical components requiring maintenance are located on the front layer of the cabinet, while the rear layer houses the cables used for electrical connections. Simultaneously, a maintenance door is provided corresponding to the front layer, allowing it to be exposed. When the transfer switch box is placed against a wall, maintenance of the internal electrical components can also be achieved through the maintenance door on the front of the transfer switch box. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the transfer switch box.

[0032] Figure 2 This is a rear view of the changeover switch box.

[0033] Figure 3This is a 3D view of the mounting bracket.

[0034] Figure 4 This is a side view of the mounting bracket.

[0035] Figure 5 A schematic diagram showing the installation of electrical components inside a changeover switch box.

[0036] The attached reference numerals include: enclosure 1, air inlet 11, air outlet 12, mounting bracket 13, maintenance door 14, installation chamber 15, cable installation and maintenance passage 151, functional unit chamber 152, battery test socket chamber 153, insulation monitoring unit chamber 154, and fuse installation and maintenance chamber 155. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0038] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined based on the contours of the corresponding components. Terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not imply sequence or importance.

[0039] Example 1

[0040] The basics are as follows: Figure 1 As shown, a transfer switch box includes a housing 1, which is generally rectangular. The housing 1 includes three mounting brackets 13 arranged in a straight line. The three mounting brackets 13 can be fixedly connected by fasteners or other existing technologies, and the three mounting brackets 13 are assembled together to form the internal frame of the housing 1.

[0041] like Figure 3As shown, the mounting frame 13 in this embodiment is specifically a rectangular frame, including a top plate, support columns, middle columns, and a base frame. The base frame in this embodiment is U-shaped and is located at the lowest end. The support columns are rectangular columns, and there are four support columns arranged in a U-shape. The bottoms of the four support columns are fixedly connected to the four corners of the base frame. In practice, the bottoms of the support columns can be connected to the base frame by welding or by using fasteners. A top plate, which is rectangular, is provided on top of the support columns, connecting the tops of the four support columns together. The top plate is horizontal. In this embodiment, there are two middle columns, both vertically arranged. The bottoms of the middle columns are fixedly connected to the base frame, and the tops of the middle columns are fixedly connected to the top plate. The middle columns are located between the front and rear support columns. Simultaneously, a crossbeam is also provided in the middle of the base frame, with both ends of the crossbeam fixedly connected to the left and right ends of the base frame.

[0042] In this embodiment, a vertical partition is vertically installed in the middle of the mounting frame 13, dividing the interior of the mounting frame 13 into front and back sections. When three mounting frames 13 are assembled to form the interior of the cabinet 1, the partitions within the three mounting frames 13 work together to divide the interior of the cabinet 1 into a front cabinet layer and a rear cabinet layer. The front and rear cabinet layers are positioned one in front of the other, with the front cabinet layer located in front of the rear cabinet layer. The partition is preferably made of a transparent material, allowing maintenance personnel to observe the rear cabinet layer from the front cabinet layer through the partition. The partition can be a transparent plastic sheet. The partition can be detachably installed using fasteners, thereby facilitating maintenance of the electrical components in the rear cabinet layer.

[0043] like Figure 4 As shown, this embodiment also includes a layered plate installed inside the mounting frame 13. The layered plate is located at the front of the mounting frame 13 and is horizontal. There are three layered plates, arranged vertically, which work together to divide the interior of the mounting frame 13 into upper, middle, and lower layers.

[0044] In this embodiment, the box body 1 is formed by splicing three mounting brackets 13. A partition plate is provided between adjacent mounting brackets 13, and the partition plate is located at the front of the mounting bracket 13. At the same time, side plates are provided on the left and right sides of the box body 1, which close the left and right sides of the box body 1. A back plate is provided at the back of the box body 1, which closes the back of the box body 1.

[0045] like Figure 5As shown, in this embodiment, the central partition, layered panels, and side panels work together to form nine rectangular installation chambers 15 on the front layer of the cabinet 1, arranged in a rectangular array. The installation chambers 15 are used for installing electrical components. Each installation chamber 15 is equipped with a maintenance door 14, which is hinged, allowing the installation chamber 15 to be opened or closed when the maintenance door 14 is rotated. Opening the installation chamber 15 through the maintenance door 14 allows for the installation and maintenance of the electrical components inside.

[0046] like Figure 5 As shown, among the nine installation chambers 15 in this embodiment, the three installation chambers 15 located at the upper part of the front layer of the cabinet are cable installation and maintenance channels 151, which are used by maintenance personnel to install and maintain cables. Cables extend from the top of the cabinet 1 into the cable installation and maintenance channels 151 and are electrically connected to the electrical components inside the cabinet 1. The three installation chambers 15 located in the middle of the front layer of the cabinet are functional unit chambers 152, which are used to install DC circuit breakers. The three installation chambers 15 located at the lower part of the front layer of the cabinet are a battery test socket chamber 153, an insulation monitoring unit chamber 154, and a fuse installation and maintenance chamber 155. A battery test socket is installed in the battery test socket chamber 153, an insulation monitoring device is installed in the insulation monitoring unit chamber 154, and a fuse is installed in the fuse installation and maintenance chamber 155. The DC circuit breaker, battery test socket, insulation monitoring device, and fuse are electrically connected.

[0047] In this embodiment, the rear cabinet layer is used to house cables, which are then used to electrically connect the electrical components inside the installation chamber 15. Of course, to allow cables to pass through the partition and connect to the electrical components, connection ports for cables to pass through can be provided on the partition.

[0048] like Figure 1 As shown, to achieve heat dissipation inside the enclosure 1, an air inlet 11 is provided at the lower front of the enclosure 1 in this embodiment. The air inlet 11 is located below the bottommost layered panel. The air inlet 11 has a rectangular opening. The air inlet 11 communicates with the interior of the enclosure 1 and is connected to the rear layer of the enclosure. External air can enter the interior of the enclosure 1 through the air inlet 11 to dissipate heat from the electrical components inside the enclosure 1. Simultaneously, as... Figure 2 As shown, an air outlet is provided on the rear side of the cabinet 1 for exhausting gas. During heat dissipation, outside air can enter the cabinet 1 through the air inlet 11, then the gas flows to the rear layer of the cabinet, and finally the air is discharged to the outside through the air outlet.

[0049] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A transfer switch box, characterized in that: The enclosure includes a front cabinet layer and a rear cabinet layer inside the enclosure. The front cabinet layer is located in front of the rear cabinet layer. The front cabinet layer is equipped with electrical components that are in an electrically connected state. The rear cabinet layer accommodates connecting cables. The front of the cabinet is provided with a maintenance door, which is used to open or close the front layer of the cabinet.

2. The transfer switch box according to claim 1, characterized in that: The front layer of the cabinet includes several isolated installation chambers, which are used for the installation of electrical components.

3. The transfer switch box according to claim 2, characterized in that: The maintenance door is installed in a one-to-one correspondence with the installation chamber.

4. The transfer switch box according to claim 2, characterized in that: The electrical components include a DC circuit breaker in an electrically connected state, a battery test socket, an insulation monitoring unit, and a fuse.

5. The transfer switch box according to claim 2, characterized in that: The installation room includes a cable installation and maintenance channel, which is located on the upper part of the front layer of the cabinet.

6. The transfer switch box according to claim 2, characterized in that: The installation room includes a functional unit room, which is located in the middle of the front layer of the cabinet.

7. The transfer switch box according to claim 2, characterized in that: The installation chamber includes a battery test socket chamber, which is located in the lower part of the front layer of the cabinet; and / or; The installation room includes an insulation monitoring unit room, which is located in the lower part of the front layer of the cabinet. and / or; The installation room includes a fuse installation and maintenance room, which is located in the lower part of the front layer of the cabinet.

8. The transfer switch box according to claim 1, characterized in that: A partition is provided between the front layer and the rear layer of the cabinet, and the partition separates the front layer and the rear layer of the cabinet.

9. The transfer switch box according to claim 1, characterized in that: The enclosure includes three mounting brackets, each a rectangular frame, which are arranged sequentially.

10. The transfer switch box according to claim 1, characterized in that: The enclosure has an air inlet and an air outlet, which are used for heat dissipation through gas flow.

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