Double-bus high-voltage switch cabinet

Abstract

The utility model discloses a double-bus high-voltage switch cabinet which comprises a cabinet body, and a first bus chamber, a second bus chamber, a relay chamber and a cable chamber are formed in the cabinet body. The first bus chamber is located at the top of the cabinet body, a main bus is arranged in the first bus chamber, and the main bus is fixedly connected with the wall body of the first bus chamber through an insulator; the second bus chamber is located on one side of the first bus chamber, a standby bus is arranged in the second bus chamber, and the standby bus is fixedly connected with the inner wall of the standby bus through an insulator; the relay chamber is located under the first bus and the second bus, and an electric isolation disconnecting link is arranged in the relay chamber; the first bus chamber and the second bus chamber are formed in the cabinet body, so that the bus is a double-loop bus, the double-loop bus is independent chambers, when the main bus breaks down, the standby bus can operate independently to ensure external power supply, and the switch cabinet has fault isolation performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical equipment, and in particular relates to a double-busbar high-voltage switch cabinet. Background Art

[0002] High-voltage switchgear is a common device in electrical control systems, used for power transmission and current distribution. The current domestic standard 10KV high-voltage switchgear is powered by a single busbar. When the internal busbar is damaged, the entire device cannot operate. In actual use, most of the switchgear are connected in series and operated synchronously. If one of the switchgear stops working, the entire transmission device will be paralyzed, making it impossible to transmit power and distribute current. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the purpose of the present utility model is to provide a double-busbar high-voltage switchgear.

[0004] The technical solution adopted by the utility model is as follows: comprising a cabinet body, wherein a first busbar chamber, a second busbar chamber, a relay chamber and a cable chamber are formed in the cabinet body;

[0005] The first busbar chamber is located at the top of the cabinet and has a main busbar installed therein. The main busbar is fixedly connected to the wall of the first busbar chamber through insulators.

[0006] A second busbar chamber is located on one side of the first busbar chamber and is provided with a spare busbar therein. The spare busbar is fixedly connected to the inner wall of the spare busbar via an insulator;

[0007] The relay room is located directly below the first busbar and the second busbar. An electric isolating switch is provided in the relay room. Two terminals of the electric isolating switch are respectively connected to the main busbar and the standby busbar. An outgoing cable is provided at the bottom of the relay room. The outgoing cable is connected to the main busbar and the standby busbar.

[0008] As a preferred embodiment of the present invention, a mounting plate is provided in the relay chamber, both ends of the mounting plate are fixedly connected to the inner wall of the relay chamber, a plurality of mounting holes are formed on the mounting plate, a transformer mounting seat is provided on the mounting plate, the transformer mounting seat is installed in two of the mounting holes, a current transformer is fixed on the transformer mounting seat, one of the terminals of the current transformer is connected to the outgoing cable, and the other terminal is connected to the main bus and the standby bus.

[0009] As a preferred embodiment of the present invention, a grounding switch is provided on the opposite side of the current transformer, the grounding switch is connected to the current transformer, a lightning rod is provided on one side of the grounding switch, and the lightning rod is fixedly connected to the bottom of the relay chamber.

[0010] As a preferred embodiment of the present invention, a cable chamber is formed in the cabinet body, and the cable chamber is located at one end of the second busbar chamber away from the first busbar chamber. A locking electromagnet is provided on the cable chamber, and the locking electromagnet is used to control the locking control of the switch cabinet.

[0011] As a preferred embodiment of the present invention, a load switch is provided in the cable room, and the load switch is located above the locking electromagnet. One of the terminals of the load switch is connected to the current transformer, and the other terminal is connected to the main bus and the backup bus through the electric isolation switch.

[0012] As a preferred embodiment of the present invention, a relay instrument room is formed in the cable room, and a wiring panel is provided above the relay instrument room.

[0013] As a preferred embodiment of the present invention, the main busbar and the standby busbar are both connected to the relay chamber, and the tops of the first busbar chamber, the second busbar chamber and the cable chamber are all provided with pressure relief ports, which are respectively connected to the first busbar chamber, the second busbar chamber, the relay chamber and the cable chamber.

[0014] As a preferred embodiment of the present invention, two hooks are symmetrically provided on the top of the cabinet, and the hooks are fixedly connected to the cabinet.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model is a double-bus high-voltage switchgear. By forming a first busbar chamber and a second busbar chamber in the cabinet body, the busbar is a double-circuit busbar. The double-circuit busbars are each independently formed into a chamber. When a main busbar fails, the standby busbar can operate independently to ensure external power supply, so that the switchgear has fault isolation.

[0017] 2. The double-circuit busbar is controlled by a double electric isolating knife, which realizes the separate control of the main busbar and the standby busbar. The double electric isolating knife is mechanically and electrically interlocked by a newly invented operating mechanism. The double electric isolating knife can be operated manually or electrically to realize convenient control of the switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] In the figure: A. First busbar room; B. Second busbar room; C. Relay room; D. Cable room; E. Relay instrument room; 1. Main busbar; 2. Spare busbar; 3. Insulator; 4. Electric isolating switch; 5. Load switch; 6. Current transformer; 7. Outgoing cable; 8. Mounting plate; 9. Lightning rod; 10. Earthing switch; 11. Locking electromagnet; 12. Wiring panel; 13. Hook; 14. Pressure relief port; 15. Transformer mounting base; 16. Mounting hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0023] The following combination Figure 1 The present invention is described in detail. A double-busbar high-voltage switchgear comprises a cabinet body, wherein a first busbar chamber A, a second busbar chamber B, a relay chamber C, and a cable chamber D are formed within the cabinet body. The first busbar chamber A and the second busbar chamber B are of the same size and have tops flush with each other. The relay chamber C is formed directly below the first busbar chamber A and the second busbar chamber B.

[0024] The first busbar compartment A is located at the top of the cabinet and contains a main busbar 1. The main busbar 1 is fixedly connected to the wall of the first busbar compartment A via insulators 3. The main busbar 1 is used for power transmission and current distribution.

[0025] The second busbar chamber B is located on one side of the first busbar chamber A. It is equipped with a spare busbar 2, which is fixedly connected to the inner wall of the spare busbar 2 via an insulator 3. The spare busbar 2 has the same principle as the main busbar 1 and can be used as a backup during maintenance of the main busbar 1. It can be used alternately with the main busbar 1 to ensure normal power transmission of the electric control cabinet.

[0026] The relay room C is located directly below the first busbar and the second busbar. An electric isolating knife switch 4 is provided in the relay room C. The two terminals of the electric isolating knife switch 4 are respectively connected to the main busbar 1 and the backup busbar 2, and independently control the conduction state of the main busbar 1 and the backup busbar 2, and realize the independent chamber between the main busbar 1 and the backup busbar 2, which can independently carry out power transmission and current distribution. An outgoing cable 7 is provided at the bottom of the relay room C. The outgoing cable 7 is connected to the main busbar 1 and the backup busbar 2, and is used to transmit the required amount of electricity and current after the electricity passes through the electric control cabinet. In addition, it can be assembled between multiple electric control cabinets.

[0027] Advantageously, a mounting plate 8 is provided in the relay chamber C, both ends of the mounting plate 8 are fixedly connected to the inner wall of the relay chamber C, a plurality of mounting holes 16 are formed on the mounting plate 8, a transformer mounting seat 15 is provided on the mounting plate 8, the transformer mounting seat 15 is installed in two of the mounting holes 16, a current transformer 6 is fixedly provided on the transformer mounting seat 15, one of the terminals of the current transformer 6 is connected to the outgoing cable 7, and the other terminal is connected to the main bus 1 and the standby bus 2. The multiple mounting holes 16 are provided for the adjustable installation of the current transformer 6 at different heights on the mounting plate 8 to meet the actual installation requirements of the current transformer 6 at different heights, so as to realize the upward and downward movement of the current transformer 6.

[0028] Advantageously, a grounding switch 10 is provided on the opposite side of the current transformer 6, and the grounding switch 10 is connected to the current transformer 6. The grounding switch 10 is used to connect the power supply inside the electric control cabinet. A lightning rod 9 is provided on one side of the grounding switch 10. The lightning rod 9 is fixedly connected to the bottom of the relay chamber C. The lightning rod 9 is used to protect the electronic components inside the electric control cabinet.

[0029] Advantageously, a cable chamber D is formed in the cabinet body, and the cable chamber D is located at one end of the second busbar chamber B away from the first busbar chamber A. A locking electromagnet 11 is provided on the cable chamber D, and the locking electromagnet 11 is used to control the locking control of the switch cabinet. The locking electromagnet 11 is an existing conventional technology, which uses a device that generates a magnetic field by passing current through a coil and adsorbs the iron core to achieve locking control of the switch cabinet.

[0030] Advantageously, a load switch 5 is provided in the cable chamber D, and the load switch 5 is located above the locking electromagnet 11. One of the terminals of the load switch 5 is connected to the current transformer 6, and the other terminal is connected to the main bus 1 and the backup bus 2 through the electric isolation switch 4. The load switch 5 is used to manually control the conduction state of the main bus 1 and the backup bus 2, thereby realizing manual control in the switch cabinet and meeting different power supply requirements.

[0031] Advantageously, a relay meter room E is formed in the cable room D. A wiring panel 12 is provided above the relay meter room E for outputting power. The wiring panel can be connected to different electrical appliances through lines.

[0032] Advantageously, the main busbar 1 and the standby busbar 2 are both connected to the relay chamber C, and the tops of the first busbar chamber A, the second busbar chamber B and the cable chamber D are each provided with a pressure relief vent 14, which is respectively connected to the first busbar chamber A, the second busbar chamber B, the relay chamber C and the cable chamber D. When a failure occurs in an internal electronic component, high-temperature and high-pressure gas is generated. By installing a pressure relief vent 14 on the tops of the first busbar chamber A, the second busbar chamber B and the cable chamber D, the high-temperature and high-pressure gas generated in the switch cabinet is depressurized and discharged, thereby discharging the polluted gas from the switch cabinet.

[0033] Advantageously, two hooks 13 are symmetrically provided on the top of the cabinet, and the hooks 13 are fixedly connected to the cabinet. The hooks 13 are fixedly connected to the top of the cabinet and are installed away from the pressure relief port 14. The hooks 13 facilitate the hoisting, installation and transfer of the switch cabinet during installation.

[0034] Working principle of this utility model:

[0035] In normal operation, the main busbar 1 realizes the transmission of power and the distribution of current. In this state, the switch in the electric isolation switch 4 that is connected to the standby busbar 2 is disconnected through electric control, so that the standby busbar 2 stops transmitting power and distributing current, and the standby busbar 2 can be repaired.

[0036] When the main bus 1 fails, the backup bus 2 is activated. The electric isolation switch 4 is manually disconnected to avoid harm to the maintenance personnel. Then the switch in the electric isolation switch 4 that controls the conduction of the backup bus 2 is closed to enable the normal operation of the backup bus 2, thereby realizing the transmission and distribution of current. At the same time, the main bus 1 can be repaired, and the backup bus 2 effectively guarantees the normal operation of the equipment.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] The above content is merely an example and explanation of the structure of the present utility model. Technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the scope of protection of the present utility model.

Claims

1. A double busbar high voltage switchgear, characterized in that: It comprises a cabinet body, in which a first busbar chamber, a second busbar chamber and a relay chamber are formed; A first busbar chamber is located at the top of the cabinet, and a main busbar is arranged inside the first busbar chamber. The main busbar is fixedly connected to the wall of the first busbar chamber through an insulator; A second busbar chamber, located at one side of the first busbar chamber, is provided with a spare busbar inside, and the spare busbar is fixedly connected to the inner wall of the spare busbar through an insulator; The relay room is located directly below the first busbar and the second busbar. An electric isolating switch is provided in the relay room. Two terminals of the electric isolating switch are respectively connected to the main busbar and the standby busbar. An outgoing cable is provided at the bottom of the relay room. The outgoing cable is connected to the main busbar and the standby busbar.

2. A double busbar high voltage switchgear according to claim 1, characterized in that: A mounting plate is provided in the relay room, both ends of which are fixedly connected to the inner wall of the relay room, a plurality of mounting holes are formed on the mounting plate, a transformer mounting seat is provided on the mounting plate, and the transformer mounting seat is installed in two of the mounting holes, a current transformer is fixedly provided on the transformer mounting seat, one of the terminals of the current transformer is connected to the outgoing cable, and the other terminal is connected to the main bus and the standby bus.

3. A double busbar high voltage switchgear according to claim 2, characterized in that: A grounding switch is provided on the opposite side of the current transformer, the grounding switch is communicated with the current transformer, a lightning rod is provided on one side of the grounding switch, and the lightning rod is fixedly connected to the bottom of the relay chamber.

4. A double busbar high voltage switchgear according to claim 2, characterized in that: A cable chamber is formed in the cabinet, and the cable chamber is located at one end of the second bus chamber away from the first bus chamber. A locking electromagnet is provided on the cable chamber, and the locking electromagnet is used to control the locking control of the switch cabinet.

5. A double busbar high voltage switchgear according to claim 4, characterized in that: A load switch is provided in the cable room, and the load switch is located above the locking electromagnet. One terminal of the load switch is connected to the current transformer, and the other terminal is connected to the main bus and the standby bus through the electric isolation switch.

6. A double busbar high voltage switchgear according to claim 5, characterized in that: A relay instrument room is formed in the cable room, and a wiring panel is arranged above the relay instrument room.

7. A double busbar high voltage switchgear according to claim 4, characterized in that: The main bus and the standby bus are both connected to the relay chamber. The tops of the first bus chamber, the second bus chamber and the cable chamber are all provided with pressure relief ports, which are respectively connected to the first bus chamber, the second bus chamber, the relay chamber and the cable chamber.

8. A double busbar high voltage switchgear according to claim 7, characterized in that: Two hooks are symmetrically arranged on the top of the cabinet, and the hooks are fixedly connected to the cabinet.

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