Front-face disassembly-free cable ring main unit

Abstract

The utility model relates to the field of cable ring main units, in particular to a cable ring main unit with the front face free of disassembly, which comprises a metal plate box, a side face quick disassembly and assembly assembly and a cable connecting assembly, and the side face quick disassembly and assembly assembly comprises a metal plate side plate, a screw, a heat dissipation hole, a controller, a switch button, a barometer and a live display. A metal plate side plate is attached to the side end part of the metal plate box; according to the utility model, through simplifying the connection and replacement process of the cable, the operation can be carried out without dismounting the front panel of the ring main unit, thereby improving the working efficiency, reducing the power failure time, providing a safer maintenance environment, facilitating the access and installation of the cable, obviously reducing the maintenance and upgrade time of an electric power system, and reducing the maintenance cost. The cable can be quickly and simply connected and disconnected, power supply and looped network functions are provided, and stable operation of a power system is ensured.

Description

Technical Field

[0001] The utility model relates to the field of ring main units, in particular to a front-panel non-dismantling cable ring main unit. Background Technique

[0002] A ring main unit is a kind of high-voltage switchgear, mainly used in the distribution network of the power system, especially in the distribution substations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and industrial enterprises. Its core components adopt load switches and fuses, and have the advantages of simple structure, small volume, low price, improving power supply parameters and performance, and power supply safety.

[0003] However, during the process of cable replacement and maintenance of the existing ring main unit, it is necessary to disassemble from the front, which reduces the work efficiency, increases the power outage time, and cannot provide a safe maintenance environment, increasing the maintenance and upgrade time of the power system.

[0004] Therefore, aiming at the problem that the existing ring main unit cannot provide a safe maintenance environment during the process of cable replacement and maintenance, increasing the maintenance and upgrade time of the power system, a front-panel non-dismantling cable ring main unit can be designed to simplify the connection and replacement process of the cable, and the operation can be carried out without removing the front panel of the ring main unit. Content of the Utility Model

[0005] In order to overcome the problem that the ring main unit cannot provide a safe maintenance environment during the process of cable replacement and maintenance, increasing the maintenance and upgrade time of the power system.

[0006] The technical solution of the utility model is: a front-panel non-dismantling cable ring main unit, including a sheet metal box, and also including a side quick disassembly and assembly component and a cable connection component. The side quick disassembly and assembly component includes a sheet metal side plate, screws, heat dissipation holes, a controller, a switch button, a pressure gauge, and a live-line indicator; the sheet metal side plate is attached to the side end of the sheet metal box.

[0007] Preferably, it simplifies the connection and replacement process of the cable, the operation can be carried out without removing the front panel of the ring main unit, improves the work efficiency, reduces the power outage time, and provides a safer maintenance environment, facilitates the entry and installation of the cable, can significantly reduce the maintenance and upgrade time of the power system, quickly and simply connect and disconnect the cable, provides power supply and ring network functions, and ensures the stable operation of the power system.

[0008] Preferably, screws are provided inside the sheet metal side plate; heat dissipation holes are provided inside the sheet metal side plate. During use, operate with a special handle. Note that the main switch and the operating spindle of the earthing switch mechanism are different. After confirming that the lower door is closed, operate the earthing switch. Rotating clockwise closes the earthing switch, and rotating counterclockwise opens the earthing switch. When the earthing switch is in the open state, operate the main switch. Rotating clockwise closes the switch, and rotating counterclockwise opens the switch.

[0009] Preferably, a controller is provided at the side end of the sheet metal side plate; a switch button is provided at the side end of the sheet metal side plate. There is a mechanical interlock between the load switch and the earthing switch to prevent misoperation. If you encounter difficulties in operation, do not force the operation. After carefully checking the status of the load switch, perform the closing and opening operations. The air tank contains a circuit breaker switch, a load switch, an earthing switch and connecting copper bars.

[0010] Preferably, a pressure gauge is provided at the side end of the sheet metal side plate; a live display is provided at the side end of the sheet metal side plate. These components are sealed in the air tank and are not affected by the external environment, making them suitable for various harsh environments. The connection between the air tank and the outside is mainly through cable supports, and the component that cooperates with the cable support is called a flood-proof touchable wire front plug.

[0011] Preferably, the cable connection assembly includes a flood-proof touchable cable front plug, a cable support, a connector, a circuit breaker switch, a load switch, an earthing switch, and copper bars; a flood-proof touchable cable front plug is provided inside the sheet metal box. The flood-proof touchable cable front plug is a cable connection device with specific designs and functions aimed at improving the safety and convenience of cable terminals. The design features of this plug include: the plug uses a T-shaped insulating sleeve, and its inner and outer walls are respectively coated with a semiconductive layer, which helps to produce a good shielding effect on the cable terminal.

[0012] Preferably, a cable support is fixedly installed at the upper end of the flood-proof touchable cable front plug; a connector is connected to the side end of the cable support; a circuit breaker switch is connected to the side end of the connector, effectively improving the situation where induced charges are generated on the surface of the plug-in device in the existing technology during the operation of the ring main unit. Flood control design: The plug has a flood control function and can operate safely in water. This is due to its use of prefabricated heat (cold) shrink technology and imported rubber materials, with a high tear-resistant and flame-retardant formula, ensuring its safety and reliability in humid or underwater environments. Such a structure and characteristics result in.

[0013] Preferably, a load switch is provided at the end of the circuit breaker switch side; a grounding switch is provided at the end of the load switch side; a copper busbar is connected to the upper end of the grounding switch. When a fault occurs in the rear-end equipment and power outage maintenance is required, the front plug of the flood-proof touchable cable needs to be peeled off from the cable support column, and the front panel of the ring main unit does not need to be removed for operation, which improves work efficiency, reduces power outage time, and provides a safer maintenance environment.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The present invention simplifies the connection and replacement process of the cable. The operation can be carried out without removing the front panel of the ring main unit, which improves work efficiency, reduces power outage time, and provides a safer maintenance environment. It is convenient for the cable to enter and exit and be installed, can significantly reduce the maintenance and upgrade time of the power system, quickly and simply connect and disconnect the cable, provide power supply and ring network functions, and ensure the stable operation of the power system.

[0016] 2. During use, operate with a special handle. Note that the operating main shafts of the main switch and the grounding switch mechanism are different. After confirming that the lower door is closed, operate the grounding switch. Rotating clockwise is to close the grounding switch, and rotating counterclockwise is to open the grounding switch. When the grounding switch is in the open state, operate the main switch. Rotating clockwise is to close the switch, and rotating counterclockwise is to open the switch. There is a mechanical interlock between the load switch and the grounding switch to prevent misoperation. If it is difficult to operate, do not force the operation. After carefully checking the state of the load switch, then perform the closing and opening operations. The inside of the gas tank contains a circuit breaker switch, a load switch, a grounding switch and a connecting copper busbar.

[0017] 3. These components are all sealed in the gas tank and are not affected by the external environment, and are suitable for various harsh environments. The connection between the gas tank and the outside mainly depends on the cable support column. The component that cooperates with the cable support column is called the front plug of the flood-proof touchable wire. The front plug of the flood-proof touchable cable is a cable connection device, which has a specific design and function, aiming to improve the safety and convenience of use of the cable terminal. The design features of this plug include: the plug adopts a T-shaped insulating sleeve, and its inner wall and outer wall are respectively coated with a semiconductive layer. This design helps to produce a good shielding effect on the cable terminal, effectively improving the situation of induced charges generated on the surface of the plug-in device in the existing technology when working in the ring main switchgear. Flood control design: The plug has a flood control function and can operate safely in water. This benefits from its use of prefabricated heat (cold) shrink technology and imported rubber materials, and has a high tear-resistant and flame-retardant formula, ensuring its safety and reliability in humid or underwater environments. Such a structure and characteristics result in that when a fault occurs in the rear-end equipment and power outage maintenance is required, the front plug of the flood-proof touchable cable needs to be peeled off from the cable support column, and the front panel of the ring main unit does not need to be removed for operation, which improves work efficiency, reduces power outage time, and provides a safer maintenance environment. Brief Description of the Drawings

[0018] Figure 1 The front structural schematic diagram of the present utility model is shown;

[0019] Figure 2 The disassembled structural schematic diagram of the present utility model is shown;

[0020] Figure 3 The cable structural schematic diagram of the present utility model is shown;

[0021] Figure 4 The connection component structural schematic diagram of the present utility model is shown.

[0022] Description of Reference Numerals: 1, sheet metal box; 201, sheet metal side plate; 202, screw; 203, heat dissipation hole; 204, controller; 205, switch button; 206, pressure gauge; 207, live line indicator; 301, flood - proof touchable cable front plug; 302, cable support; 303, connector; 304, circuit breaker switch; 305, load switch; 306, earthing switch; 307, copper busbar. Detailed Description of the Preferred Embodiment

[0023] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0024] Please refer to Figures 1 - 4 , the present utility model provides an embodiment: a front - side non - disassembly cable ring main switchgear, which includes a sheet metal box 1, and also includes a side - side quick - disassembly and assembly component and a cable connection component. The side - side quick - disassembly and assembly component includes a sheet metal side plate 201, a screw 202, a heat dissipation hole 203, a controller 204, a switch button 205, a pressure gauge 206, and a live line indicator 207; the sheet metal side plate 201 is attached to the side end of the sheet metal box 1, simplifying the connection and replacement process of the cable. The operation can be carried out without removing the front panel of the ring main switchgear, improving the work efficiency, reducing the power outage time, and providing a safer maintenance environment. It is convenient for the cable to enter and exit and be installed, can significantly reduce the maintenance and upgrade time of the power system, quickly and simply connect and disconnect the cable, provide power supply and ring network function, and ensure the stable operation of the power system.

[0025] Please refer to Figure 2, in this embodiment, there is a screw 202 inside the sheet metal side plate 201; there are heat dissipation holes 203 opened inside the sheet metal side plate 201, and a controller 204 is provided at the side end of the sheet metal side plate 201; a switch button 205 is provided at the side end of the sheet metal side plate 201, and a pressure gauge 206 is provided at the side end of the sheet metal side plate 201; a live display 207 is provided at the side end of the sheet metal side plate 201. During use, operate with a special handle. Note that the operating spindles of the main switch and the earthing switch 306 are different. After confirming that the lower door is closed, operate the earthing switch 306. Rotating clockwise is to close the earthing switch 306, and rotating counterclockwise is to open the earthing switch 306. When the earthing switch 306 is in the open state, operate the main switch. Rotating clockwise is to close the switch, and rotating counterclockwise is to open the switch. There is a mechanical interlock between the load switch 305 and the earthing switch 306 to prevent misoperation. If there is difficulty in operation, do not force the operation. After carefully checking the status of the load switch 305, then perform the opening and closing operations. The gas box internally contains a circuit breaker switch 304, a load switch 305, an earthing switch 306 and a connecting copper bar 307.

[0026] Please refer to Figures 3 - 4, in this embodiment, the cable connection assembly includes a flood-proof touchable cable front plug 301, a cable support 302, a connector 303, a circuit breaker switch 304, a load switch 305, an earthing switch 306, and a copper busbar 307. Inside the sheet metal box 1, there is a flood-proof touchable cable front plug 301, and a cable support 302 is fixedly installed at the upper end of the flood-proof touchable cable front plug 301. The side end of the cable support 302 is connected to a connector 303. The side end of the connector 303 is connected to a circuit breaker switch 304, and a load switch 305 is arranged at the side end of the circuit breaker switch 304. A load switch 305 is arranged at the side end of the load switch 305. An earthing switch 306 is arranged at the side end of the earthing switch 306. The upper end of the earthing switch 306 is connected to a copper busbar 307. These components are all sealed in the gas box and are not affected by the external environment, suitable for various harsh environments. The connection between the gas box and the outside mainly relies on the cable support 302, and the component cooperating with the cable support 302 is called a flood-proof touchable cable front plug 301. The flood-proof touchable cable front plug 301 is a cable connection device with specific designs and functions aimed at improving the safety and usability of cable terminals. The design features of this plug include: the plug uses a T-shaped insulating sleeve, and its inner and outer walls are respectively coated with semi-conductive layers. This design helps to produce a good shielding effect on the cable terminal and effectively improves the situation where induced charges are generated on the surface of the plug-in device in the existing technology when operating in a ring main unit. Flood-proof design: The plug has a flood-proof function and can operate safely in water, thanks to its use of prefabricated heat (cold) shrinkage technology and imported rubber materials, with a high tear-resistant and flame-retardant formula, ensuring its safety and reliability in humid or underwater environments. Such a structure and characteristics result in that when a fault occurs in the backend equipment and power outage maintenance is required, the flood-proof touchable cable front plug 301 needs to be peeled off from the cable support 302, and the operation can be carried out without removing the front panel of the ring main unit, improving work efficiency, reducing power outage time, and providing a safer maintenance environment.

[0027] When working, during use, operate with a special handle. Note that the main switch and the operating spindle of the earthing switch 306 mechanism are different. After confirming that the lower door is closed, operate the earthing switch 306. Rotating clockwise is to close the earthing switch 306, and rotating counterclockwise is to open the earthing switch 306. When the earthing switch 306 is in the open state, operate the main switch. Rotating clockwise is to close the switch, and rotating counterclockwise is to open the switch. There is a mechanical interlock between the load switch 305 and the earthing switch 306 to prevent misoperation. If you encounter difficulties in operation, do not force it. After carefully checking the status of the load switch 305, perform the closing and opening operations. The inside of the gas tank contains the circuit breaker switch 304, the load switch 305, the earthing switch 306 and the connecting copper busbar 307. These components are sealed in the gas tank and are not affected by the external environment. They are suitable for various harsh environments. The connection between the gas tank and the outside mainly depends on the cable support 302. The component that cooperates with the cable support 302 is called the flood-proof touchable cable front plug 301. The flood-proof touchable cable front plug 301 is a cable connection device. It has specific designs and functions aimed at improving the safety and usability of the cable terminal. The design features of this plug include: The plug uses a T-shaped insulating sleeve, and its inner wall and outer wall are respectively coated with a semiconductive layer. This design helps to produce a good shielding effect on the cable terminal and effectively improves the situation where the existing plug-and-play device generates induced charges on the surface when working in the ring main unit switchgear. Flood-proof design: The plug has a flood-proof function and can operate safely in water. This benefits from its use of prefabricated heat (cold) shrink technology and imported rubber materials, with a high tear-resistant and flame-retardant formula, ensuring its safety and reliability in humid or underwater environments. Such a structure and characteristics result in that when a fault occurs in the rear-end equipment and power outage for maintenance is required, the flood-proof touchable cable front plug 301 needs to be peeled off from the cable support 302, and the operation can be carried out without removing the front panel of the ring main unit switchgear, which improves work efficiency, reduces power outage time, and provides a safer maintenance environment.

[0028] Through the above steps, the connection and replacement process of the cable is simplified. The operation can be carried out without removing the front panel of the ring main unit switchgear, which improves work efficiency, reduces power outage time, and provides a safer maintenance environment. It is convenient for the cable to enter and exit and be installed, can significantly reduce the maintenance and upgrade time of the power system, quickly and simply connect and disconnect the cable, provide power supply and ring main unit function, and ensure the stable operation of the power system.

Claims

1. A front-side non-disassembling cable ring main switch cabinet, comprising a sheet metal box (1); characterized in that: It also includes a side quick disassembly and assembly component and a cable connection component. The side quick disassembly and assembly component includes a sheet metal side plate (201), screws (202), heat dissipation holes (203), a controller (204), a switch button (205), a pressure gauge (206), and a live line indicator (207); the sheet metal side plate (201) is attached to the side end of the sheet metal box (1).

2. The front-disassembly-free cable ring main unit according to claim 1, wherein: Screws (202) are arranged inside the sheet metal side plate (201); heat dissipation holes (203) are provided inside the sheet metal side plate (201).

3. The front-disassembly-free cable ring main unit according to claim 2, wherein: The controller (204) is arranged at the side end of the sheet metal side plate (201); the switch button (205) is arranged at the side end of the sheet metal side plate (201).

4. The front-side non-disassembling cable ring main switch cabinet according to claim 3, wherein: The pressure gauge (206) is arranged at the side end of the sheet metal side plate (201); the live line indicator (207) is arranged at the side end of the sheet metal side plate (201).

5. A front-side non-disassembling cable ring main switch cabinet according to claim 1, characterized in that: The cable connection component includes a flood control touchable cable front plug (301), a cable support (302), a connector (303), a circuit breaker switch (304), a load switch (305), an earthing switch (306), and a copper bar (307); the flood control touchable cable front plug (301) is arranged inside the sheet metal box (1).

6. The front-disassembly-free cable ring main unit according to claim 5, characterized in that: The cable support (302) is fixedly installed at the upper end of the flood control touchable cable front plug (301); the connector (303) is connected to the side end of the cable support (302); the circuit breaker switch (304) is connected to the side end of the connector (303).

7. The front side of the cable ring main switch cabinet according to claim 6, characterized in that: The load switch (305) is arranged at the side end of the circuit breaker switch (304); the earthing switch (306) is arranged at the side end of the load switch (305); the copper bar (307) is connected to the upper end of the earthing switch (306).

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