A fast power-off 10KV high-voltage switch cabinet

Abstract

The present invention relates to the technical field of high-voltage switch cabinets, and in particular to a 10KV high-voltage switch cabinet with rapid power-off, comprising a switch cabinet body, a cut-off mechanism being arranged on the switch cabinet body, a power line entering the switch cabinet body passing through the cut-off mechanism, and the cut-off mechanism being capable of cutting off the current of the power line, the cut-off mechanism comprising a box body, a fixing block being mounted on the inner wall of the box body, a mounting groove being arranged inside the fixing block, a first terminal being inserted at the lower end of the fixing block, a conductive block being fixedly mounted at the bottom end of the inner wall of the mounting groove, an air bag being embedded and mounted at the upper end of the conductive block, a second terminal being inserted at the upper end of the fixing block, and a conductive plate being fixedly connected at the lower end of the second terminal. When the device is used, an air intake switch is moved to inflate the air bag so that the air bag expands, the air bag can lift up the conductive plate, so that the conductive block is separated from the conductive plate, and the purpose of rapid power-off is achieved, and the operation process is convenient and simple.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage switch cabinets, and in particular to a fast power-off 10KV high-voltage switch cabinet. Background Art

[0002] The switch cabinet is an electrical equipment. The external line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, with high-voltage busbars, such as power plants, etc. Some also have low-frequency load shedding to protect the main equipment. The main function of the switch cabinet is to open and close, control and protect electrical equipment during the power generation, transmission, distribution and power conversion process of the power system. The components in the switch cabinet mainly include circuit breakers, disconnectors, load switches, operating mechanisms, mutual inductors and various protection devices.

[0003] A power-off device is indispensable inside the switch cabinet. When the switch cabinet is opened for maintenance, the switch cabinet needs to be powered off to avoid electric shock during maintenance. The existing switch cabinet is not convenient to power off. Therefore, we propose a fast power-off 10KV high-voltage switch cabinet. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a fast power-off 10KV high-voltage switch cabinet.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fast power-off 10KV high-voltage switchgear comprises a switchgear body, a switchgear body being provided with a cut-off mechanism, a power line entering the switchgear body passing through the cut-off mechanism, and the cut-off mechanism being capable of cutting off the current of the power line, the cut-off mechanism comprising a box body, a fixing block being installed on the inner wall of the box body, a mounting groove being arranged inside the fixing block, a first terminal being inserted at the lower end of the fixing block, a conductive block being fixedly installed at the bottom end of the inner wall of the mounting groove, an air bag being embedded and installed at the upper end of the conductive block, a second terminal being inserted at the upper end of the fixing block, a conductive plate being fixedly connected to the lower end of the second terminal, the conductive plate being in contact with the conductive block under the action of gravity, so that current flows between the first terminal and the second terminal, and after the air bag is inflated, the conductive plate is separated from the conductive block, so that current cannot flow between the first terminal and the second terminal.

[0007] Preferably, the airbag is connected to one end of a first connecting pipe, and the first connecting pipe is connected to one end of an air inlet pipe.

[0008] Preferably, an air intake switch is installed on the outer wall of the box body, and the air intake or exhaust of the airbag can be controlled by the air intake switch.

[0009] Preferably, two movable plates corresponding to each other are inserted on the fixed block, a stop block is provided on the movable plate, a first spring is installed between the stop block and the inner wall of the fixed block, the lower end surface of the movable plate is flush with the lower end surface of the conductive plate, the movable plate is made of insulating material, the end of the movable plate is in contact with the side wall of the conductive plate, and when the airbag pushes the conductive plate to rise, the movable plate extends into the interior of the mounting groove under the action of the first spring.

[0010] Preferably, the air inlet pipe is also connected to one end of a second connecting pipe, the other end of the second connecting pipe is communicated with the interior of the mounting groove, a pressure relief valve is installed on the second connecting pipe, and the air inlet pipe is connected to the inert gas storage tank.

[0011] Preferably, a second spring is installed between the conductive plate and the top end of the inner wall of the installation slot, and the second spring is sleeved on the outer side of the second terminal.

[0012] Preferably, a protective cover is installed on the upper end of the fixing block, the second terminal is located inside the protective cover, and a through hole is provided on the upper end of the protective cover.

[0013] Preferably, a door panel is installed on the box body, and a hidden lock is installed on the door panel.

[0014] The beneficial effects of the present invention are:

[0015] 1. When the device is used, move the air inlet switch to inflate the airbag, so that the airbag expands. The airbag can lift the conductive plate, so that the conductive block is separated from the conductive plate, so as to achieve the purpose of rapid power off. The operation process is convenient and simple.

[0016] 2. When the device is in use, during the cutting process, the movable plate will be inserted between the conductive block and the conductive plate under the action of the first spring to prevent the conductive plate from resetting after the air in the airbag is discharged, thereby improving the safety of the device.

[0017] 3. When the device is in use, inert gas is filled into the installation slot through the second connecting pipe to prevent oxidation of the conductive block and the conductive plate, thereby ensuring normal use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of a fast power-off 10KV high-voltage switch cabinet proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the main cross-section structure of a cutting mechanism for a 10KV high-voltage switch cabinet with rapid power-off proposed by the present invention;

[0020] Figure 3 A 10KV high-voltage switch cabinet with rapid power-off is proposed in the present invention. Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1 switch cabinet body, 2 cutting mechanism, 3 box body, 4 fixing block, 5 first terminal, 6 second terminal, 7 conductive block, 8 conductive plate, 9 air bag, 10 first connecting pipe, 11 air intake pipe, 12 second connecting pipe, 13 air intake switch, 14 protective cover, 15 movable plate, 16 stopper, 17 first spring, 18 second spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-3 A 10KV high-voltage switchgear with rapid power-off comprises a switchgear body 1, a cut-off mechanism 2 is arranged on the switchgear body 1, a power line entering the switchgear body 1 passes through the cut-off mechanism 2, and the cut-off mechanism 2 can cut off the current of the power line, the cut-off mechanism 2 comprises a box body 3, a fixing block 4 is installed on the inner wall of the box body 3, a mounting groove is arranged inside the fixing block 4, a first terminal 5 is inserted at the lower end of the fixing block 4, a conductive block 7 is fixedly installed at the bottom end of the inner wall of the mounting groove, an air bag 9 is embedded and installed at the upper end of the conductive block 7, a second terminal 6 is inserted at the upper end of the fixing block 4, a conductive plate 8 is fixedly connected to the lower end of the second terminal 6, the conductive plate 8 contacts the conductive block 7 under the action of gravity, so that current flows between the first terminal 5 and the second terminal 6, after the air bag 9 is inflated, the conductive plate 8 is separated from the conductive block 7, so that current cannot flow between the first terminal 5 and the second terminal 6.

[0024] Furthermore, the airbag 9 is connected to one end of a first connecting pipe 10 , and the first connecting pipe 10 is connected to one end of an air intake pipe 11 .

[0025] Furthermore, an air intake switch 13 is installed on the outer wall of the box body 3 , and the air intake switch 13 can control the air intake or exhaust of the airbag 9 .

[0026] Furthermore, two movable plates 15 corresponding to each other are inserted on the fixed block 4, and a stopper 16 is provided on the movable plate 15. A first spring 17 is installed between the stopper 16 and the inner wall of the fixed block 40. The lower end surface of the movable plate 15 is flush with the lower end surface of the conductive plate 8. The movable plate 15 is made of insulating material, and the end of the movable plate 15 is in contact with the side wall of the conductive plate 8. When the airbag 9 pushes the conductive plate 8 to rise, the movable plate 15 extends into the interior of the mounting groove under the action of the first spring 17.

[0027] Furthermore, the air inlet pipe 11 is also connected to one end of a second connecting pipe 12, the other end of the second connecting pipe 12 is connected to the interior of the mounting groove, and a pressure relief valve is installed on the second connecting pipe 12, and the air inlet pipe 11 is connected to the inert gas storage tank.

[0028] Furthermore, a second spring 18 is installed between the conductive plate 8 and the top of the inner wall of the installation slot, and the second spring 18 is sleeved on the outer side of the second terminal 6 .

[0029] Furthermore, a protective cover 14 is installed on the upper end of the fixing block 4 , the second terminal 6 is located inside the protective cover 14 , and a through hole is provided on the upper end of the protective cover 14 .

[0030] Furthermore, a door panel is installed on the box body 3, and a hidden lock is installed on the door panel.

[0031] In this embodiment, when the device is used, the air intake switch 13 is moved to inflate the airbag 9 so that the airbag 9 expands. The airbag 9 can lift the conductive plate 8, so that the conductive block 7 is separated from the conductive plate 8, thereby achieving the purpose of rapid power off. The operation process is convenient and simple.

[0032] When the device is in use, during the cutting process, the movable plate 15 will be inserted between the conductive block 7 and the conductive plate 8 under the action of the first spring 17 to prevent the conductive plate 8 from resetting after the gas in the airbag 9 is discharged, thereby improving the safety of the device.

[0033] During use of the device, inert gas is filled into the installation groove through the second connecting pipe 12, and sealing gaskets are installed at the connection between the fixed block 4 and the first terminal 5, the second terminal 6 and the movable plate 15 to ensure the sealing of the installation groove and prevent oxidation of the conductive block 7 and the conductive plate 8. The conductive block 7 and the conductive plate 8 can be in normal contact, ensuring that the device can be used normally.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 10KV high-voltage switchgear with rapid power-off, comprising a switchgear body (1), characterized in that: The switch cabinet body (1) is provided with a disconnection mechanism (2), and the power line entering the switch cabinet body (1) passes through the disconnection mechanism (2). The disconnection mechanism (2) can disconnect the current of the power line. The disconnection mechanism (2) comprises a box body (3), and a fixing block (4) is installed on the inner wall of the box body (3). The fixing block (4) is provided with a mounting groove inside. The lower end of the fixing block (4) is inserted with a first terminal (5). The bottom end of the inner wall of the mounting groove is fixedly installed with a conductive block (7). The conductive block ( An airbag (9) is embedded and installed at the upper end of the fixed block (4), a second terminal (6) is inserted at the upper end of the fixed block (4), and a conductive plate (8) is fixedly connected to the lower end of the second terminal (6). The conductive plate (8) contacts the conductive block (7) under the action of gravity, so that current flows between the first terminal (5) and the second terminal (6). After the airbag (9) is inflated, the conductive plate (8) is separated from the conductive block (7), so that current cannot flow between the first terminal (5) and the second terminal (6); The air bag (9) is connected to one end of a first connecting pipe (10), and the first connecting pipe (10) is connected to one end of an air intake pipe (11); An air intake switch (13) is installed on the outer wall of the box body (3), and the air intake or exhaust of the air bag (9) can be controlled by the air intake switch (13); Two movable plates (15) corresponding to each other are inserted on the fixed block (4), a stopper (16) is arranged on the movable plate (15), a first spring (17) is installed between the stopper (16) and the inner wall of the fixed block (40), the lower end surface of the movable plate (15) is flush with the lower end surface of the conductive plate (8), the movable plate (15) is made of insulating material, the end of the movable plate (15) is in contact with the side wall of the conductive plate (8), when the airbag (9) pushes the conductive plate (8) to rise, the movable plate (15) extends into the interior of the installation groove under the action of the first spring (17); The air intake pipe (11) is also connected to one end of a second connecting pipe (12), the other end of the second connecting pipe (12) is connected to the interior of the installation groove, and a pressure relief valve is installed on the second connecting pipe (12). The air intake pipe (11) is connected to an inert gas storage tank.

2. A fast power-off 10KV high-voltage switch cabinet according to claim 1, characterized in that: A second spring (18) is installed between the conductive plate (8) and the top of the inner wall of the installation groove, and the second spring (18) is sleeved on the outer side of the second terminal (6).

3. A fast power-off 10KV high-voltage switch cabinet according to claim 1, characterized in that: A protective cover (14) is installed at the upper end of the fixing block (4), the second terminal (6) is located inside the protective cover (14), and a through hole is provided at the upper end of the protective cover (14).

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