Instrument chamber of ring main unit and ring main unit

Abstract

The utility model provides an instrument chamber of a ring main unit and the ring main unit, comprising a cabinet body and an outer door, a first side of the cabinet body is provided with an opening, the cabinet body is rotatably connected with the outer door in the opening direction, and when the outer door and the cabinet body are closed, the outer door and the cabinet body are in sealed connection; an inner door is further arranged in the cabinet body, the inner door is rotationally connected with the inner wall of the cabinet body, the cabinet body and the inner door form a cavity, and components are arranged in the cavity; a lighting lamp and a microswitch are further arranged in the cavity, the lighting lamp is connected with the controller, the microswitch is electrically connected with the controller, and a microswitch contact piece is arranged on the outer door. In the vertical direction, the spacing distance between the top of the inner door and the top wall of the cabinet body is larger than the spacing distance between the microswitch contact piece and the top wall of the cabinet body. When the outer door and the cabinet body are closed, the microswitch abuts against the microswitch contact piece. And the controller is used for receiving an on-off signal of the microswitch to control the on-off of the illuminating lamp. When the outer door is opened, the illuminating lamp is turned on, the inner door does not need to be opened, and maintenance is facilitated for maintenance personnel.

Description

Technical Field

[0001] This invention relates to the technical field of ring main unit switchgear, specifically to an instrument compartment and a ring main unit. Background Technology

[0002] A ring main unit (RMU) is an electrical device used in power systems to open, close, control, and protect electrical equipment. The instrument room is where secondary components are installed within the RMU. These secondary components are affected by the environment, so the protection performance of the instrument room directly impacts their performance. Therefore, the instrument room requires high protection against malfunctions.

[0003] A current ring main unit's instrument compartment includes a housing with a front opening and an inner door housed within the housing and rotatably connected to the inner wall of the housing. Electrical components extend forward from the front wall of the inner door. An outer door can open or close the front opening and seals against the opening wall. The outer door has a transparent observation window in its center for observing the electrical components on the inner door. However, while the instrument compartment of this ring main unit has lighting, this lighting needs to be manually turned on, increasing maintenance time. Furthermore, if a microswitch is installed between the inner and outer doors, it would occupy the space between them, reducing the space within the cavity formed by the cabinet and the inner door. If the microswitch is installed inside the housing, the lighting cannot be turned on when the outer door is opened due to the presence of the inner door, affecting the use by maintenance personnel. Summary of the Invention

[0004] The primary objective of this invention is to provide an instrument room for a ring main unit that automatically turns on the lighting when the outer door is opened, even when the instrument room has two doors.

[0005] The second objective of this invention is to provide a ring main unit for an instrument room that utilizes the aforementioned ring main unit.

[0006] To achieve the first objective of this invention, the instrument compartment of the ring main unit provided by this invention includes a cabinet and an outer door. An opening is provided on the first side of the cabinet, and the outer door is rotatably connected to the opening of the cabinet. When the outer door is closed, it is sealed to the cabinet. An inner door is also provided inside the cabinet, rotatably connected to the inner wall of the cabinet. The cabinet and the inner door form a cavity, in which components are disposed. A lighting lamp and a micro switch are also disposed inside the cavity. The lighting lamp is connected to a controller, and the micro switch is electrically connected to the controller. A micro switch contact is provided on the outer door. In the vertical direction, the distance between the top of the inner door and the top wall of the cabinet is greater than the distance between the micro switch contact and the top wall of the cabinet. When the outer door is closed, the micro switch abuts against the micro switch contact. The controller receives the opening and closing signals of the micro switch to control the opening and closing of the lighting lamp.

[0007] As can be seen from the above solution, this utility model ensures that the components in the instrument room can be kept in a sealed environment through the double-door design, and the distance between the top of the inner door and the top wall of the cabinet is greater than the distance between the micro switch contact and the top wall of the cabinet. That is, the contact point of the micro switch is above the inner door. When the double door is installed, the lighting is turned on when the maintenance personnel open the outer door, without having to open the inner door, which is convenient for maintenance personnel.

[0008] In a further design, the microswitch contacts are arranged parallel to the top wall of the cabinet.

[0009] As can be seen, by setting the micro switch contact parallel to the top wall of the cabinet, the micro switch contact does not contact the inner door.

[0010] In a further embodiment, the micro switch is equipped with a driver plate that extends towards the top wall of the cabinet. When the outer door is closed, the micro switch contact abuts against the driver plate. When the micro switch contact abuts against the driver plate, the driver plate is forced to move towards the micro switch, closing the micro switch, and the controller receives the closing signal from the micro switch.

[0011] As can be seen, the drive plate can be extended, which facilitates the contact between the micro switch contact and the drive plate.

[0012] In a further design, an installation section is also provided inside the cavity. The first end of the installation section is connected to the top wall of the cabinet, and the second end of the installation section is connected to a micro switch.

[0013] Therefore, the mounting section allows the micro switch to be fixed inside the cavity.

[0014] In a further design, an observation window is provided in the middle of the outer door, and a glass plate is installed inside the observation window.

[0015] Therefore, the observation window makes it easier for staff to inspect components.

[0016] In a further design, the inner door and the outer door are set parallel to each other. The inner door has a through hole, which is located within the projection area of ​​the observation window on the inner door. The area of ​​the through hole is smaller than that of the outer door.

[0017] Therefore, it can be seen that the through hole allows staff to inspect the components inside the cavity.

[0018] In a further design, an aviation plug interface is provided on the top wall of the cabinet.

[0019] Therefore, it can be seen that network cables, power cables, etc. can be inserted into the aviation connector to connect to the internal components of the cavity. The aviation connector can ensure the sealing of the internal components while allowing for power connection and signal transmission.

[0020] In a further design, a sealing ring is installed on the inner wall of the outer door, and when the outer door is closed with the cabinet, the sealing ring is positioned around the edge of the cabinet opening.

[0021] Therefore, the sealing ring can ensure a sealed connection between the outer door and the cabinet.

[0022] To achieve the second objective, the ring main unit provided by this utility model utilizes the instrument compartment of the aforementioned ring main unit. Attached Figure Description

[0023] Figure 1 This is a structural diagram of an embodiment of the instrument compartment of the ring main unit of this utility model.

[0024] Figure 2 This is a perspective view of the interior of the instrument compartment of an embodiment of the ring main unit of this utility model.

[0025] Figure 3 This is a cross-sectional view of an embodiment of the instrument compartment of the ring main unit of this utility model.

[0026] Figure 4 yes Figure 3 A magnified view of point A.

[0027] Figure 5 This is a structural schematic diagram of an embodiment of the instrument compartment of the ring main unit of this utility model.

[0028] Figure 6 yes Figure 5 Enlarged view of point B.

[0029] Figure 7 This is a structural diagram of the outer door of the instrument room of the ring main unit of this utility model.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0031] This invention ensures the airtightness of the instrument compartment through a double-door design. The instrument compartment is equipped with a microswitch and a lighting lamp, and the contact point of the microswitch is located above the inner door. With the double doors installed, when maintenance personnel open the outer door, the lighting lamp turns on without having to open the inner door, which facilitates maintenance.

[0032] See Figure 1 In this embodiment, the instrument compartment of the ring main unit is equipped with a cabinet 1 and an outer door 2. An opening is provided on the first side of the cabinet 1, and the outer door 2 is rotatably connected to the opening of the cabinet 1. When the outer door 2 is closed, it is sealed to the cabinet 1. (See also...) Figure 5 The inner wall of the outer door is provided with a sealing ring 23. When the outer door 2 is closed with the cabinet 1, the sealing ring 24 is set around the edge of the opening of the cabinet 1, so as to ensure that the outer door 2 and the cabinet 1 are sealed together.

[0033] See Figure 2 and Figure 3 The cabinet 1 also has an inner door 3 inside, which is rotatably connected to the inner wall of the cabinet 1. The cabinet 1 and the inner door 3 form a cavity 13, in which components (not shown in the figure) are installed. The components may include switch open indicator lights, switch closed indicator lights, relay protection devices, etc.

[0034] See Figure 5 and Figure 6 The cavity 13 is also equipped with a lighting lamp 5 and a micro switch 6. The lighting lamp 5 is installed on the top wall of the cabinet 1. The micro switch 6 is connected to the cavity 13 through a mounting part 64, wherein the first end of the mounting part 64 is connected to the top wall of the cabinet 1, and the second end of the mounting part 64 is connected to the micro switch 6.

[0035] See Figure 4 The micro switch contact 62 is arranged parallel to the top wall of the cabinet 1. The micro switch 62 is provided with a drive piece 61. The drive piece 61 of the micro switch extends towards the top wall of the cabinet 1. When the outer door 2 is closed to the cabinet 1, the micro switch contact 62 abuts against the drive piece 61.

[0036] Lighting lamp 5 is connected to the controller (not shown in the figure), and micro switch 6 is electrically connected to the controller. The controller is used to receive the opening and closing signals of micro switch 6 to control the opening and closing of the lighting lamp.

[0037] A microswitch contact 62 is installed on the outer door. See also Figure 4 In the vertical direction, the distance between the top of the second door 3 and the top wall of the cabinet 1 is greater than the distance between the micro switch contact 62 and the top wall of the cabinet 1; when the outer door 2 is closed to the cabinet, the micro switch 6 abuts against the micro switch contact 62. When the micro switch contact 62 abuts against the drive plate, the drive plate 61 is forced to move in the direction of the micro switch 6, the micro switch 6 is in the closed state, and the controller receives the closing signal of the micro switch 6.

[0038] The controller receives the closed signal of the micro switch 6 and controls the lighting 5 to turn off; when the outer door separates from the cabinet, the driving piece 61 of the micro switch 6 separates from the micro switch contact piece, the driving piece 61 separates from the micro switch 6, the controller receives the open signal of the micro switch 6, and the controller controls the lighting 5 to turn on.

[0039] See Figure 1 and Figure 5An observation window 21 is provided in the middle of the outer door 2, and a glass plate is installed inside the observation window 21. Personnel can inspect components through the observation window 21. The inner door 3 is arranged parallel to the outer door 2, and the inner door 2 has a through hole 31. The through hole 31 is located within the projection area of ​​the observation window 21 on the inner door 2, and the area of ​​the through hole 31 is smaller than the area of ​​the observation window 21. Personnel can inspect the components inside the cavity 13 through the through hole 31.

[0040] See Figure 1 The top wall of the cabinet is equipped with an aviation connector 4. Network cables, power cables, etc. can be inserted into the aviation connector 4 to connect to the internal components of the cavity 13. The aviation connector 4 can ensure the sealing of the internal components of the cavity 13 while allowing for power connection and signal transmission.

[0041] This embodiment uses a double-door design to ensure that the components in the instrument room can be kept in a sealed environment. The distance between the top of the inner door 3 and the top wall of the cabinet 1 is greater than the distance between the micro switch contact 62 and the top wall of the cabinet 1. That is, the contact point of the micro switch 6 is above the inner door. When the double door is installed, the lighting 5 turns on when the maintenance personnel open the outer door 2, and the maintenance personnel do not need to open the inner door 3, which facilitates maintenance.

[0042] The instrument compartment of the ring main unit using the above embodiments.

[0043] The above is only a preferred embodiment of the present utility model, but the design concept of the utility model is not limited thereto. Without departing from the concept of the present utility model, more other equivalent embodiments may be included. Those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the present utility model.

Claims

1. The instrument compartment of the ring main unit includes a cabinet and an outer door. An opening is provided on the first side of the cabinet. The outer door is rotatably connected to the opening of the cabinet. When the outer door is closed with the cabinet, the outer door is sealed to the cabinet. The cabinet is also equipped with an inner door, which is rotatably connected to the inner wall of the cabinet. The cabinet and the inner door form a cavity, in which components are installed. Its features are: The cavity is also equipped with a lighting lamp and a micro switch. The lighting lamp is connected to the controller, and the micro switch is electrically connected to the controller. The outer door is equipped with a micro switch contact piece. In the vertical direction, the distance between the top of the inner door and the top wall of the cabinet is greater than the distance between the micro switch contact and the top wall of the cabinet. When the outer door is closed to the cabinet, the micro switch abuts against the micro switch contact. The controller is used to receive the opening and closing signals of the micro switch to control the opening and closing of the lighting.

2. The instrument compartment of the ring main unit according to claim 1, characterized in that: The micro switch contact is arranged parallel to the top wall of the cabinet.

3. The instrument compartment of the ring main unit according to claim 2, characterized in that: The micro switch is provided with a driving plate, which extends toward the top wall of the cabinet. When the outer door is closed with the cabinet, the micro switch contact abuts against the driving plate.

4. The instrument compartment of the ring main unit according to claim 3, characterized in that: The cavity is also provided with an installation part, the first end of which is connected to the top wall of the cabinet, and the second end of which is connected to the micro switch.

5. The instrument compartment of the ring main unit according to any one of claims 1 to 4, characterized in that: An observation window is provided in the middle of the outer door, and a glass plate is provided inside the observation window.

6. The instrument compartment of the ring main unit according to claim 5, characterized in that: The inner door and the outer door are arranged parallel to each other; The inner door is provided with a through hole, which is located within the projection area of ​​the observation window on the inner door, and the area of ​​the through hole is smaller than that of the observation window.

7. The instrument compartment of the ring main unit according to any one of claims 1 to 4, characterized in that: The top wall of the cabinet is equipped with an aviation plug interface.

8. The instrument compartment of the ring main unit according to any one of claims 1 to 4, characterized in that: The inner wall of the outer door is provided with a sealing ring, and when the outer door is closed with the cabinet, the sealing ring is arranged around the edge of the opening of the cabinet.

9. A ring main unit, characterized in that: The ring main unit uses the instrument compartment of the ring main unit as described in any one of claims 1 to 8.

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