Common box type environment-friendly gas ring main unit

Abstract

The invention discloses a common box type environment-friendly gas ring main unit, and belongs to the technical field of power equipment, the common box type environment-friendly gas ring main unit comprises a main loop gas box, an instrument room, a mechanism room and a cable room, one side of the mechanism room is fixedly connected with one side of the main loop gas box, the bottom ends of the mechanism room and the main loop gas box are both fixed on the cable room, and the instrument room is fixedly arranged at the top end of the mechanism room; a plurality of secondary elements are arranged in the instrument chamber and electrically connected with an auxiliary control mechanism arranged in the main loop gas tank, the control mechanism arranged in the main loop gas tank is further electrically connected with a main control center in the mechanism chamber, and a grounding copper bar in the cable chamber is electrically connected with the auxiliary control mechanism, the main control center, an instrument and the secondary elements. An auxiliary control mechanism in the main loop gas tank penetrates through the shell of the main loop gas tank and the shell of the cable chamber and is connected with an outgoing cable; according to the invention, the main loop gas tank, the cable chamber, the mechanism chamber and the instrument chamber are arranged to be a plurality of different modules, and only a single module needs to be operated by disassembling needles during maintenance or upgrading.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a common box type environmentally friendly gas ring network cabinet. Background Art

[0002] With the rapid development of urban modernization and the continuous renovation of urban distribution networks, box-type substations have been widely used. Box-type substations include high-voltage cabinets, transformer rooms, low-voltage cabinets and other parts. Among them, the common box-type environmentally friendly gas ring network cabinet is used in the high-voltage cabinet of the box-type substation. Most of the existing common box-type ring network cabinets are large in size and adopt an integrated design. A large number of parts need to be disassembled during maintenance and disassembly, and the work efficiency is low. Therefore, how to provide a common box-type environmentally friendly gas ring network cabinet is a problem that technicians in this field urgently need to solve. Summary of the invention

[0003] The main purpose of the present invention is to provide a common box type environmental protection gas ring main unit to solve the above technical problems. The device sets the main circuit gas box, cable room, mechanism room and instrument room into multiple different modules. The modular design is adopted. When repairing or upgrading, there is no need to disassemble the whole set of equipment, and only a single module can be operated.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A common-box environmentally friendly gas ring network cabinet comprises a main circuit gas box, an instrument room, a mechanism room and a cable room, one side of the mechanism room is fixedly connected to one side of the main circuit gas box, the bottom of the mechanism room and the main circuit gas box are fixed on the cable room, the top of the mechanism room is fixedly provided with an instrument room, a plurality of secondary elements are arranged in the instrument room and are electrically connected to an auxiliary control mechanism arranged in the main circuit gas box, the control mechanism arranged in the main circuit gas box is also electrically connected to a main control center in the mechanism room, the grounding copper bus in the cable room is electrically connected to the auxiliary control mechanism, the main control center, the instrument and the secondary elements respectively, the auxiliary control mechanism in the main circuit gas box passes through the main circuit gas box shell and the cable room shell and is connected to the outgoing cable.

[0006] Furthermore, the auxiliary control mechanism in the main circuit gas box includes an isolating / earthing switch, a circuit breaker, and an outlet bushing. One end of the isolating / earthing switch is electrically connected to the transmission circuit through the main bus, and the other end is electrically connected to the circuit breaker through a connecting line. The circuit breaker is electrically connected to the outlet cable through the outlet bushing. The isolating / earthing switch is also electrically connected to the main control center and the secondary element respectively. The circuit breaker is electrically connected to the main control center and the secondary element respectively. The outlet bushing is electrically connected to the secondary element through a wire.

[0007] Furthermore, the main control center in the mechanism room includes an isolating / earthing switch controller and a circuit breaker controller, the isolating / earthing switch controller is connected to the isolating / earthing switch, and the circuit breaker controller is electrically connected to the circuit breaker.

[0008] Furthermore, the circuit breaker is connected to a vacuum interrupter via a transmission element having a sealing function, and the vacuum interrupter can realize breaking operation control.

[0009] Furthermore, the isolating / earthing switch controller is connected to the isolating / earthing switch via a metal shaft having a sealing function, thereby performing opening and closing operations on the isolating / earthing switch inside the gas box.

[0010] Furthermore, environmentally friendly insulating gas is provided in the vacuum interrupter.

[0011] Furthermore, the main circuit air box and the cable room are both provided with pressure relief channels.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention arranges the main circuit gas box, cable room, mechanism room and instrument room into a plurality of different modules. The modular design is adopted, and during maintenance or upgrading, there is no need to dismantle the entire set of equipment, and only a single module can be operated; environmentally friendly insulating gas is arranged in the vacuum arc extinguishing chamber, which is more green and environmentally friendly, and at the same time, it is reliable in operation and has a long breaking life; the pressure relief channel can ensure reliable pressure relief in the event of a fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the front structure of the present invention.

[0017] Figure 3 It is a side structural schematic diagram of the present invention.

[0018] Figure 4 This is a schematic diagram of the front structure inside the cable room.

[0019] Figure 5 This is a schematic diagram of the side structure inside the cable room.

[0020] Among them, 1-main circuit gas box, 2-instrument room, 3-mechanism room, 3.1-isolating / earthing switch controller, 3.2-circuit breaker controller, 4-cable room, 4.1-outlet bushing, 4.2-grounding copper busbar. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 5 As shown, the present invention provides a common-box environmentally friendly gas ring network cabinet, including a main circuit gas box 1, an instrument room 2, a mechanism room 3 and a cable room 4, one side of the mechanism room 3 is fixedly connected to one side of the main circuit gas box 1, the bottom ends of the mechanism room 3 and the main circuit gas box 1 are fixed on the cable room 4, the top of the mechanism room 3 is fixedly provided with an instrument room 2, a plurality of secondary components are arranged in the instrument room 2 and are electrically connected to the auxiliary control mechanism arranged in the main circuit gas box 1, the control mechanism arranged in the main circuit gas box 1 is also electrically connected to the main control center in the mechanism room 3, the grounding copper bus 4.2 in the cable room 4 is electrically connected to the auxiliary control mechanism, the main control center, the instrument and the secondary components respectively, the grounding copper bus 4.2 in the main circuit gas box 1 is electrically connected to the auxiliary control mechanism, the main control center, the instrument and the secondary components respectively, The auxiliary control mechanism penetrates the shell of the main circuit gas box 1 and the shell of the cable room 4 and is connected with the outgoing cable; in the present invention, the modules of the main circuit gas box 1, the instrument room 2, the mechanism room 3 and the cable room 4 are isolated from each other, and the modular design enables operation on a certain module during maintenance or upgrading without disassembling the entire set of equipment; flame retardant devices such as epoxy insulation boards are provided in the cable room 4, which can effectively prevent the spread of accidents such as fires in the event of failures; the auxiliary control mechanism, the main control center, the instrument and the secondary components are electrically connected to the on-site grounding point through the grounding copper bus 4.2 to achieve the purpose of reliable grounding; the internal structures of the main circuit gas box 1, the instrument room 2, the mechanism room 3 and the cable room 4 are connected by copper conductors;

[0023] The width of the ring main unit in the present invention is only 1050 mm, and it includes three sets of primary main circuits. On average, the insulation distance of one set of primary main circuits can be only 350 mm. Under the premise of achieving the same insulation performance, the insulation distance is much smaller than the standard insulation distance size of 420mm of the existing ring network cabinet. The compact design is conducive to accommodating more box-type substations under the same floor area, improving land utilization rate; the main circuit gas box 1 is welded with 2.5mm thick 304 stainless steel plates, and all the primary main circuit components are wrapped inside the main circuit gas box 1, adopting a fully enclosed design; the main circuit gas box 1 is a gas-insulated fully enclosed gas box; the cable room 4 is mainly used to lead the cable connection from the primary main circuit outlet, which can be connected to the next-level electrical equipment, ring network cabinet or transformer; the mechanism room 3 is mainly equipped with an isolating switch / earthing switch controller 3.1 and a circuit breaker controller 3.2, which are mainly used for personnel to perform closing, opening, grounding, maintenance and other operations in front of the cabinet; the instrument room 2 is the main control box, including secondary components such as operation and monitoring, and has a remote operation function, allowing personnel to operate on-site or remotely;

[0024] The secondary components inside the instrument room 2 mainly include air switches, buttons (opening and closing operations), indicator lights (opening and closing indications), microcomputer protection devices (protection circuits, which can cut off the power to the cabinet in case of short circuit faults), ammeters (displaying cabinet current parameters), conversion switches (which can switch between on-site operation and remote operation functions), etc., as well as a large number of terminals, wires and other parts connected to the components. Among them, the operating part components are mainly electrically connected to the two mechanisms of the mechanism room through auxiliary switches and travel switches, so that the mechanism can be controlled to be opened and closed through electrical components.

[0025] In this embodiment, the auxiliary control mechanism in the main circuit gas box includes an isolating / earthing switch, a circuit breaker, and an outlet bushing 4.1. One end of the isolating / earthing switch is electrically connected to the transmission circuit through the main busbar, and the other end is electrically connected to the circuit breaker through a connecting line. The circuit breaker is electrically connected to the outlet cable through the outlet bushing 4.1. The isolating / earthing switch is also electrically connected to the main control center and the secondary element respectively, and the circuit breaker is electrically connected to the main control center and the secondary element respectively; the outlet bushing is also connected to the secondary element in the instrument room 2 through a wire to indicate the energized state of the cabinet. The outlet bushing 4.1 can be connected to multiple outlet cables so that the current can flow to multiple lower-level lines;

[0026] The main functions of secondary components are: control, which can control the closing and opening of the isolating / earthing switch and circuit breaker switch of the ring main unit, and can meet the requirements of on-site and remote operation; monitoring, which can monitor the operation of primary and secondary components and provide remote monitoring functions; protection. When a fault occurs, the protection action will cut off the power supply of the line at this level, protect the upper and lower lines, and prevent the spread of the fault.

[0027] In this embodiment, the main control center in the mechanism room includes an isolating / earthing switch controller 3.1 and a circuit breaker controller 3.2. The isolating / earthing switch controller 3.1 is connected to the isolating / earthing switch, and the circuit breaker controller 3.2 is electrically connected to the circuit breaker. The isolating / earthing switch controller 3.1 is specifically a three-station mechanism. The isolating / earthing switch controller 3.1 and the circuit breaker controller 3.2 are both equipped with electrical components, which can meet the needs of on-site and remote operations of personnel.

[0028] In this embodiment, the circuit breaker is connected to a vacuum interrupter via a transmission element having a sealing function, and the vacuum interrupter can realize breaking operation control.

[0029] In this embodiment, the isolating / earthing switch controller 3.1 is connected to the isolating / earthing switch via a metal shaft having a sealing function, so as to perform opening and closing operations on the isolating / earthing switch inside the gas box.

[0030] In this embodiment, an environmentally friendly insulating gas is provided in the vacuum arc extinguishing chamber. In this embodiment, dry air is specifically used as the insulating gas, which can avoid polluting the environment and meets the green environmental protection requirements advocated by the country.

[0031] In this embodiment, pressure relief channels are provided in the main circuit air box 1 and the cable chamber 4 to ensure reliable pressure relief in the event of a fault; and the top of the main circuit air box 1 is inclined to effectively drain accumulated water.

[0032] Working principle: After all structures are connected, they are connected to the outgoing cable through the outgoing bushing 4.1. The isolating / earthing switch controller 3.1 can control the opening and closing of the isolating / earthing switch to control the grounding of the circuit. At the same time, the grounding condition can be displayed through the secondary components in the instrument room 2. The circuit breaker controller 3.2 can control the opening and closing of the entire circuit and the short-circuit current by controlling the circuit breaker. At the same time, the opening and short-circuit current conditions on the circuit breaker can be displayed on the secondary components in the instrument room 2.

[0033] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A common box type environmental protection gas ring network cabinet, characterized in that: The invention comprises a main circuit gas box (1), an instrument room (2), a mechanism room (3) and a cable room (4); one side of the mechanism room (3) is fixedly connected to one side of the main circuit gas box (1); the bottom ends of the mechanism room (3) and the main circuit gas box (1) are fixed on the cable room (4); the top of the mechanism room (3) is fixedly provided with an instrument room (2); a plurality of secondary elements are arranged in the instrument room (2) and are electrically connected to an auxiliary control mechanism arranged in the main circuit gas box (1); the control mechanism arranged in the main circuit gas box (1) is also electrically connected to a main control center in the mechanism room (3); a grounding copper busbar (4.2) in the cable room (4) is electrically connected to the auxiliary control mechanism, the main control center, the instrument and the secondary elements respectively; the auxiliary control mechanism in the main circuit gas box (1) passes through the shell of the main circuit gas box (1) and the shell of the cable room (4) and is connected to the outgoing cable.

2. The common box type environmental protection gas ring main unit according to claim 1 is characterized in that: The auxiliary control mechanism in the main circuit gas box comprises an isolating / earthing switch, a circuit breaker, and an outlet bushing (4.1); one end of the isolating / earthing switch is electrically connected to the transmission circuit via a main busbar, and the other end is electrically connected to the circuit breaker via a connecting line; the circuit breaker is electrically connected to the outlet cable via the outlet bushing (4.1); the isolating / earthing switch is also electrically connected to a main control center and a secondary element respectively; the circuit breaker is electrically connected to the main control center and the secondary element respectively; and the outlet bushing (4.1) is electrically connected to the secondary element via a wire.

3. The common box type environmental protection gas ring main unit according to claim 2 is characterized in that: The main control center in the mechanism room comprises an isolating / earthing switch controller (3.1) and a circuit breaker controller (3.2), wherein the isolating / earthing switch controller (3.1) is connected to the isolating / earthing switch, and the circuit breaker controller (3.2) is electrically connected to the circuit breaker.

4. The common box type environmental protection gas ring main unit according to claim 2 is characterized in that: The circuit breaker is connected to a vacuum interrupter via a transmission element with a sealing function, and the vacuum interrupter can realize breaking operation control.

5. The shared box type environmental protection gas ring main unit according to claim 3 is characterized in that: The isolating / earthing switch controller (3.1) is connected to the isolating / earthing switch via a metal shaft having a sealing function, thereby performing opening and closing operations on the isolating / earthing switch inside the gas box.

6. The shared box type environmental protection gas ring main unit according to claim 4, characterized in that: Environmentally friendly insulating gas is arranged in the vacuum interrupter.

7. The common box type environmental protection gas ring main unit according to claim 1, characterized in that: The main circuit air box (1) and the cable chamber (4) are both provided with pressure relief channels.

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