CN216215051U - Top pressure release device of switch cabinet - Google Patents
Top pressure release device of switch cabinet Download PDFInfo
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- CN216215051U CN216215051U CN202122706874.7U CN202122706874U CN216215051U CN 216215051 U CN216215051 U CN 216215051U CN 202122706874 U CN202122706874 U CN 202122706874U CN 216215051 U CN216215051 U CN 216215051U
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Abstract
The utility model discloses a switch cabinet top pressure release device, and belongs to the technical field of switch cabinets. The arc quenching and pressure reducing device comprises a basic frame, an arc quenching and pressure reducing structure, a peripheral baffle and a top sealing plate; the base frame comprises a frame fixed at the top of the switch cabinet and a partition board vertically fixed in the frame; the arc quenching and pressure reducing structure comprises a Z-shaped arc quenching plate, an arc quenching plate, a groove-shaped arc quenching plate and an L-shaped arc quenching plate; the peripheral baffle plate surrounds the arc quenching pressure reducing structure and is fixed on the frame, and the top sealing plate is fixed on the top of the arc quenching pressure reducing structure. After the arc is generated in the switch cabinet, the arc passes through an arc quenching channel formed by an arc quenching plate, a groove-shaped arc quenching plate, a Z-shaped arc quenching plate and an L-shaped arc quenching plate in sequence to perform multiple arc quenching and pressure reduction effects, so that the arc is weakened more thoroughly; this device simple structure, simple to operate, the residual gas that finally goes out the arc through the multiple will be guided upwards to diffuse, prevents to produce the impact to cubical switchboard side, has guaranteed near personnel's safety.
Description
Technical Field
The utility model relates to a top pressure release device of a switch cabinet, and belongs to the technical field of switch cabinets.
Background
The switch cabinet is a common electrical device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch is arranged according to the requirement. The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system.
The switch cabinet is widely applied to power distribution systems of urban power supply and industrial and mining enterprises. When the switch cabinet works, due to various unexpected reasons, the risk of short-circuit fault exists inside the switch cabinet. When a fault occurs, the generated arcing temperature is high, the energy is large, the arcing is extremely light plasma gas, and the arcing can move and expand at a high speed in the cabinet under the action of electric power and hot gas, so that the fault range is rapidly expanded. The instantaneous pressure and temperature in the switch cabinet rise rapidly, the top plate of the compartment in the cabinet can be opened, and the risk of opening the front and back sealing plates or the door plate of the switch cabinet is also existed. After the high-energy and high-heat gas rushes out of the cabinet, personnel nearby the equipment can be seriously burned, even life safety is threatened, and the risk of damaging adjacent electrical equipment is also caused. And switch cabinet top installation arcing passageway can avoid above-mentioned risk, but the general installation volume of arcing passageway is great, and the installation is loaded down with trivial details, and the cost is higher, and needs the exhaust space of discharging fume fixed.
Therefore, in order to prevent the danger of explosion caused by the internal arcing of the switch cabinet, the pressure release device at the top of the switch cabinet is designed, the pressure release device is arranged at the top of the switch cabinet, the arcing expansion pressure can be effectively and rapidly decomposed and eliminated, the safety of personnel nearby equipment is guaranteed, and the pressure release device at the top has the advantages of simplicity and convenience in installation, small size, high safety and reliability, low cost and the like.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: the utility model provides a cubical switchboard top pressure release, it has solved the problem that does not have simple structure, simple to operate's pressure release on the present cubical switchboard.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
a switch cabinet top pressure release device comprises a basic frame, an arc quenching and pressure reducing structure, a peripheral baffle and a top sealing plate;
the base frame comprises a frame fixed at the top of the switch cabinet and partition plates vertically fixed in the frame, and the partition plates divide the frame into a plurality of independent arc quenching and pressure reducing areas;
the arc quenching and pressure reducing structure comprises a Z-shaped arc quenching plate, an arc quenching plate, a groove-shaped arc quenching plate and an L-shaped arc quenching plate, wherein a plurality of primary arc quenching holes are uniformly formed in the arc quenching plate, a plurality of secondary arc quenching holes are uniformly formed in the groove-shaped arc quenching plate, and a plurality of tertiary arc quenching holes are uniformly formed in the side surface of the Z-shaped arc quenching plate;
the bottom parts of two Z-shaped arc quenching plates which are symmetrically arranged are fixed on two sides of a frame, a plurality of arc quenching plates are connected between the two Z-shaped arc quenching plates, a partition plate extends upwards from a gap between the arc quenching plates and is fixed with a top closing plate, the arc quenching plates are divided into independent arc quenching decompression areas by the partition plate, a third arc quenching hole in the side surface of each Z-shaped arc quenching plate is positioned above the arc quenching plate, a groove-shaped arc quenching plate for sealing the third arc quenching hole is fixed on the inner side of each Z-shaped arc quenching plate, and an L-shaped arc quenching plate is fixed on the outer side of each Z-shaped arc quenching plate;
the peripheral baffle plate surrounds and fixes on the frame around putting out arc pressure reduction structure, and the top shrouding is fixed at putting out arc pressure reduction structure top, and the gap between two terminal surfaces of Z shape arc-quenching board and terminal surface and the frame is sealed to wherein two relative curb plates of top shrouding, and the other two relative curb plates of top shrouding block and leave the gas vent in cubic arc-quenching hole outside and below, and L shape arc-quenching board seals the gas vent, and L shape arc-quenching board adopts the otter board, leaves open-ended exhaust passage up between top shrouding side and the peripheral baffle.
As a preferable example, a reinforcing plate is arranged on the inner side of the frame.
As a preferred example, the Z-shaped arc quenching plate is a Z-shaped structure formed by bending a top transverse plate, a middle side plate and a bottom transverse plate, the bottom transverse plate is located on the outer side of the middle side plate and fixed on the frame, the upper half part of the middle side plate is uniformly provided with vertical strip-shaped tertiary arc quenching holes, the top transverse plate is located on the inner side of the middle side plate, a groove-shaped arc quenching plate for sealing the tertiary arc quenching holes is fixed below the top transverse plate, the upper part of the top transverse plate is fixed with the top closing plate, and the side surface of the groove-shaped arc quenching plate is also uniformly provided with transverse strip-shaped secondary arc quenching holes.
As a preferable example, the arc extinguishing plate is an arc plate or a bending plate with an arc-shaped cross section, and strip-shaped primary arc extinguishing holes are uniformly formed in the arc plate or the bending plate.
As a preferred example, the top sealing plate is composed of a top plate, two fixed side plates arranged on opposite sides, and two exhaust side plates arranged on opposite sides, wherein the fixed side plates are provided with outward folded edges at the bottoms, the fixed side plates are fixed on the end surfaces of a pair of Z-shaped arc extinguishing plates, the folded edges are fixed on a frame, the fixed side plates seal the two end surfaces of the Z-shaped arc extinguishing plates and the gap between the end surfaces and the frame, the exhaust side plates are provided with exhaust ports at the bottoms, the top plate is fixed with the top of a partition plate, and the partition plate divides the frame and the top sealing plate into a plurality of independent arc extinguishing and pressure reducing areas.
As a preferable example, four lifting plates provided with lifting holes are fixed at four corners of the top sealing plate.
The utility model has the beneficial effects that:
(1) areas such as a handcart room, a bus room, a cable room and the like are arranged in the switch cabinet, arc quenching pressure reduction areas corresponding to the areas such as the handcart room, the bus room, the cable room and the like are separated from the interior of the device through partition plates, and the arc quenching pressure reduction areas are mutually independent, so that the device can provide arc quenching pressure reduction effects which are not mutually influenced aiming at different areas;
(2) after the arc is generated in the switch cabinet, the arc passes through a compact and efficient arc quenching channel formed by an arc quenching plate, a groove-shaped arc quenching plate, a Z-shaped arc quenching plate and an L-shaped arc quenching plate in sequence to perform multiple arc quenching and pressure reduction effects, so that the arc is weakened more thoroughly;
(3) this device simple structure, simple to operate, the residual gas that finally goes out the arc through the multiple will be guided upwards to diffuse, prevents to produce the impact to cubical switchboard side, has guaranteed near personnel's safety.
Drawings
FIG. 1 is a schematic disassembled view of the present invention;
FIG. 2 is a schematic view of the external structure of the present invention;
FIG. 3 is a schematic diagram of a basic frame structure;
FIG. 4 is a schematic view of the arc quenching pressure relief structure with the mounting structure of the peripheral baffles and the top closure plate;
FIG. 5 is a schematic structural view of the top closure plate and the L-shaped arc extinguishing plate;
FIG. 6 is a partial structural view of an arc quenching plate;
FIG. 7 is a schematic view of the structure of an arc passing through the primary and secondary arc-extinguishing holes;
fig. 8 is a schematic diagram of an arc quenching path according to the present invention.
In the figure: the structure comprises a basic frame 1, an arc extinguishing and pressure reducing structure 2, a peripheral baffle plate 3, a top sealing plate 4, a frame 101, a partition plate 102, a reinforcing plate 103, a Z-shaped arc extinguishing plate 201, a top transverse plate 2011, a middle side plate 2012, a bottom transverse plate 2013, an arc extinguishing plate 202 in a bow shape, a groove-shaped arc extinguishing plate 203, an L-shaped arc extinguishing plate 204, a primary arc extinguishing hole 205, a secondary arc extinguishing hole 206, a tertiary arc extinguishing hole 207, a top plate 401, a fixed side plate 402, an exhaust side plate 403, a folded edge 404, an exhaust port 405, an exhaust channel 406 and a lifting plate 407.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings.
Example 1
As shown in fig. 1-8, a top pressure relief device for a switch cabinet comprises a base frame 1, an arc quenching relief structure 2, a peripheral baffle 3 and a top sealing plate 4.
The basic frame 1 comprises a frame 101 fixed on the top of the switch cabinet, the frame 101 is matched with the top of the switch cabinet in shape and is tightly fixed in a screwing mode, and partition plates 102 are vertically fixed in the frame 101, and the frame 101 is divided into a plurality of independent arc quenching pressure reduction areas by the partition plates 102; the frame 101 has a reinforcing plate 103 on the inner side of the frame.
The arc quenching and pressure reducing structure 2 comprises a Z-shaped arc quenching plate 201, an arc quenching plate 202, a groove-shaped arc quenching plate 203 and an L-shaped arc quenching plate 204, wherein a plurality of primary arc quenching holes 205 are uniformly formed in the arc quenching plate 202, a plurality of secondary arc quenching holes 206 are uniformly formed in the groove-shaped arc quenching plate 203, and a plurality of tertiary arc quenching holes 207 are uniformly formed in the side surface of the Z-shaped arc quenching plate 201; the primary arc extinguishing hole 205, the secondary arc extinguishing hole 206 and the tertiary arc extinguishing hole 207 are all strip-shaped long round holes, wherein the secondary arc extinguishing hole 206 and the tertiary arc extinguishing hole 207 are vertically intersected or horizontally translated and staggered. The L-shaped arc chute 204 employs a mesh plate structure having IP 4X.
The bottom parts of two Z-shaped arc quenching plates 201 which are symmetrically arranged are fixed on two sides of a frame 101, a plurality of arc quenching plates 202 are connected between the two Z-shaped arc quenching plates 201, the sections of the arc quenching plates 202 are in an arc shape, the position of a central axis is upwards arched, two ends of each arc quenching plate 202 are fixed on the inner sides of the Z-shaped arc quenching plates 201 through threads, a partition plate 102 upwards extends out of a gap between the arc quenching plates 202 and is fixed with a top sealing plate 4, the arc quenching plates 202 are separated in independent arc quenching and pressure reducing areas through the partition plate 102, three arc quenching holes 207 on the side surfaces of the Z-shaped arc quenching plates 201 are located above the arc quenching plates 202, groove-shaped arc quenching plates 203 which seal the three arc quenching holes 207 are fixed on the inner sides of the Z-shaped arc quenching plates 201, and L-shaped arc quenching plates 204 are fixed on the outer sides of the Z-shaped arc quenching plates 201; the arc quenching plate 202 is an arc plate or a bending plate with an arc-shaped cross section, and strip-shaped primary quenching holes 205 are uniformly formed in the arc plate or the bending plate.
The working principle is as follows:
when short-circuit fault occurs, arcing is generated in the switch cabinet, instantaneous pressure and temperature in the switch cabinet are rapidly increased, and high-temperature and high-pressure gas and particles in the switch cabinet are flushed upwards and enter the device.
When high-temperature and high-pressure gas and particles reach the arc quenching pressure reduction device:
(1) firstly, the arc extinguishing plate 202 has the functions of blocking, weakening and cooling the arc, and particularly, the curved surface shape of the arc extinguishing plate 202 and the primary arc extinguishing holes 205 densely distributed on the plate have the function of decomposing the arc;
(2) then, after passing through the arc extinguishing plate 202, the high-temperature and high-pressure gas and particles pass through the independent flow guide design of each area formed by the partition plate 102 and the top sealing plate 4, the electric arc passes through the groove-shaped arc extinguishing plate 203 laterally, transverse secondary arc extinguishing holes 206 are densely distributed on the groove-shaped arc extinguishing plate 203, and the high-temperature and high-pressure gas and particles generated by the electric arc are blocked, dispersed and weakened;
(3) then, after the action of the secondary arc extinguishing holes 206 of the groove-shaped arc extinguishing plate 203, the energy generated by arc burning is weakened, the rest high-temperature and high-pressure gas and particles of the energy are led to the position of the third arc extinguishing hole 207 of the Z-shaped arc extinguishing plate 201 through a flow guide channel, and vertical third arc extinguishing holes 207 are densely distributed on the Z-shaped arc extinguishing plate 201, so that the high-temperature and high-pressure gas and particles generated by arc are further divided and blocked;
(4) finally, the arc pressure is weakened, the energy is quickly reduced, the rest high-temperature and high-pressure gas and particles reach the position of the L-shaped arc extinguishing plate 204 from the exhaust ports 405 on the two sides of the top sealing plate 4, the L-shaped arc extinguishing plate 204 is of a net plate structure with IP4X, larger particles are prevented from rushing out of the cabinet, meanwhile, the energy generated by arc burning is further weakened, the rest gas and tiny particles are discharged out of the cabinet, and at the moment, the peripheral baffle 3 guides the rest gas to diffuse upwards, so that the safety of nearby personnel is guaranteed.
Example 2
As shown in fig. 7 and 8, the Z-shaped arc quenching plate 201 is a Z-shaped structure formed by bending a top transverse plate 2011, a middle side plate 2012 and a bottom transverse plate 2013, the bottom transverse plate 2013 is located on the outer side of the middle side plate 2012 and fixed on the frame 101, the vertical strip-shaped third arc quenching hole 207 is uniformly formed in the upper half of the middle side plate 2012, the top transverse plate 2011 is located on the inner side of the middle side plate 2012, a groove-shaped arc quenching plate 203 for sealing the third arc quenching hole 207 is fixed below the top transverse plate 2011, the top transverse plate 2011 is fixed with the top sealing plate 4, and the transverse strip-shaped secondary arc quenching hole 206 is also uniformly formed in the side surface of the groove-shaped arc quenching plate 203. The other structure is the same as embodiment 1.
Z shape is put out arc board 201 and can be used for installing bow-shaped arc extinguishing board 202, flute profile arc extinguishing board 203, L shape and put out arc board 204, and the equipment is convenient, and Z shape is put out arc board 201 top and is fixed with top shrouding 4, plays the supporting role, further improves whole shock resistance.
Example 3
As shown in fig. 5, the top sealing plate 4 is composed of a top plate 401, two fixed side plates 402 disposed opposite to each other, and two exhaust side plates 403 disposed opposite to each other, wherein outward flanges 404 are disposed at the bottoms of the fixed side plates 402, the fixed side plates 402 are fixed on the end surfaces of a pair of Z-shaped arc quenching plates 201, the flanges 404 are fixed on the frame 101, the fixed side plates 402 close the two end surfaces of the Z-shaped arc quenching plates 201 and the gaps between the end surfaces and the frame 101, exhaust side plates 403 are provided with exhaust ports 405 at the bottoms, the top plate 401 is fixed to the top of the partition plate 102, and the partition plate 102 divides the frame 101 and the inside of the top sealing plate 4 into a plurality of independent arc quenching and pressure reducing areas. The other structure is the same as embodiment 1.
The top shrouding 4 seals Z shape through two fixed curb plates 402 and puts out arc board 201 both ends, and the gas vent 405 of reserving through exhaust curb plate 403 exports surplus gas, has formed labyrinth's drainage channel, and after 3 times put out the arc, discharge by the otter board structure of L shape arc board 204 again, leave open-ended exhaust passage 406 upwards to exhaust between top shrouding 4 side and peripheral baffle 3, and is safer.
Example 4
As shown in fig. 5, four lifting plates 407 with lifting holes are fixed at four corners of the top closing plate 4. The other structure is the same as embodiment 1.
The lifting plate 407 can facilitate the lifting operation of the switch cabinet.
By combining the above embodiments, it has the following advantages:
(1) areas such as a handcart room, a bus room, a cable room and the like are arranged in the switch cabinet, arc quenching pressure reduction areas corresponding to the areas such as the handcart room, the bus room, the cable room and the like are separated from the interior of the device through the partition plate 102, and the arc quenching pressure reduction areas are mutually independent, so that the device can provide arc quenching pressure reduction effects which are not mutually influenced aiming at different areas;
(2) after the arc is generated in the switch cabinet, the arc passes through a compact and efficient arc quenching channel formed by the arc quenching plate 202, the groove-shaped arc quenching plate 203, the Z-shaped arc quenching plate 201 and the L-shaped arc quenching plate 204 in sequence to perform multiple arc quenching and pressure reduction effects, so that the arc is weakened more thoroughly;
(3) this device simple structure, simple to operate, the residual gas that finally goes out the arc through the multiple will be guided upwards to diffuse, prevents to produce the impact to cubical switchboard side, has guaranteed near personnel's safety.
The foregoing shows and describes the general principles, principal technical features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. A switch cabinet top pressure release device is characterized by comprising a basic frame, an arc extinguishing and pressure reducing structure, a peripheral baffle plate and a top sealing plate;
the base frame comprises a frame fixed at the top of the switch cabinet and partition plates vertically fixed in the frame, and the partition plates divide the frame into a plurality of independent arc quenching and pressure reducing areas;
the arc quenching and pressure reducing structure comprises a Z-shaped arc quenching plate, an arc quenching plate, a groove-shaped arc quenching plate and an L-shaped arc quenching plate, wherein a plurality of primary arc quenching holes are uniformly formed in the arc quenching plate, a plurality of secondary arc quenching holes are uniformly formed in the groove-shaped arc quenching plate, and a plurality of tertiary arc quenching holes are uniformly formed in the side surface of the Z-shaped arc quenching plate;
the bottom parts of two Z-shaped arc quenching plates which are symmetrically arranged are fixed on two sides of a frame, a plurality of arc quenching plates are connected between the two Z-shaped arc quenching plates, a partition plate extends upwards from a gap between the arc quenching plates and is fixed with a top closing plate, the arc quenching plates are divided into independent arc quenching decompression areas by the partition plate, a third arc quenching hole in the side surface of each Z-shaped arc quenching plate is positioned above the arc quenching plate, a groove-shaped arc quenching plate for sealing the third arc quenching hole is fixed on the inner side of each Z-shaped arc quenching plate, and an L-shaped arc quenching plate is fixed on the outer side of each Z-shaped arc quenching plate;
the peripheral baffle plate surrounds and fixes on the frame around putting out arc pressure reduction structure, and the top shrouding is fixed at putting out arc pressure reduction structure top, and the gap between two terminal surfaces of Z shape arc-quenching board and terminal surface and the frame is sealed to wherein two relative curb plates of top shrouding, and the other two relative curb plates of top shrouding block and leave the gas vent in cubic arc-quenching hole outside and below, and L shape arc-quenching board seals the gas vent, and L shape arc-quenching board adopts the otter board, leaves open-ended exhaust passage up between top shrouding side and the peripheral baffle.
2. The top pressure relief device for a switchgear cabinet as claimed in claim 1, wherein a reinforcing plate is provided inside the frame of said frame.
3. The top pressure release device for the switch cabinet according to claim 1, wherein the Z-shaped arc extinguishing plate is a Z-shaped structure formed by bending a top transverse plate, a middle side plate and a bottom transverse plate, the bottom transverse plate is located on the outer side of the middle side plate and fixed on the frame, vertical strip-shaped tertiary arc extinguishing holes are uniformly formed in the upper half portion of the middle side plate, the top transverse plate is located on the inner side of the middle side plate, a groove-shaped arc extinguishing plate for sealing the tertiary arc extinguishing holes is fixed below the top transverse plate, the upper portion of the top transverse plate is fixed with the top sealing plate, and transverse strip-shaped secondary arc extinguishing holes are also uniformly formed in the side surface of the groove-shaped arc extinguishing plate.
4. The top pressure release device of the switch cabinet according to claim 1, wherein the arc extinguishing plate is an arc plate or a bent plate with an arc-shaped cross section, and strip-shaped primary arc extinguishing holes are uniformly formed in the arc plate or the bent plate.
5. The top pressure relief device of claim 1, wherein the top sealing plate is composed of a top plate, two fixed side plates disposed opposite to each other, and two exhaust side plates disposed opposite to each other, wherein the bottom of each fixed side plate is provided with an outward flange, the fixed side plates are fixed on the end surfaces of a pair of Z-shaped arc extinguishing plates, the flanges are fixed on the frame, the fixed side plates close the two end surfaces of the Z-shaped arc extinguishing plates and the gap between the end surfaces and the frame, the bottom of each exhaust side plate is provided with an exhaust port, the top plate is fixed to the top of the partition plate, and the partition plate divides the inside of the frame and the top sealing plate into a plurality of independent arc extinguishing and pressure relief areas.
6. The top pressure relief device for a switchgear cabinet as claimed in claim 1, wherein four lifting plates having lifting holes are fixed to four corners of the top sealing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122706874.7U CN216215051U (en) | 2021-11-05 | 2021-11-05 | Top pressure release device of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122706874.7U CN216215051U (en) | 2021-11-05 | 2021-11-05 | Top pressure release device of switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216215051U true CN216215051U (en) | 2022-04-05 |
Family
ID=80904215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122706874.7U Active CN216215051U (en) | 2021-11-05 | 2021-11-05 | Top pressure release device of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216215051U (en) |
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2021
- 2021-11-05 CN CN202122706874.7U patent/CN216215051U/en active Active
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