CN211088939U - Switch cabinet and switch cabinet pressure relief device - Google Patents
Switch cabinet and switch cabinet pressure relief device Download PDFInfo
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- CN211088939U CN211088939U CN201921288875.0U CN201921288875U CN211088939U CN 211088939 U CN211088939 U CN 211088939U CN 201921288875 U CN201921288875 U CN 201921288875U CN 211088939 U CN211088939 U CN 211088939U
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- pressure relief
- baffle
- arc
- electric arc
- relief device
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Abstract
The utility model relates to a switchgear technical field provides a cubical switchboard and cubical switchboard pressure relief device. The switch cabinet pressure relief device comprises a shell, a pressure relief channel is arranged in the shell, a pressure relief cover is arranged at an opening of the pressure relief channel, the switch cabinet pressure relief device further comprises an arc dividing device arranged in the pressure relief channel, the arc dividing device is a baffle, a through hole for dividing electric arc is formed in the baffle, or the arc dividing device is an arc dividing body which is arranged in the pressure relief channel at intervals and used for dividing the electric arc. After high temperature high-pressure gas rushed away the pressure release lid, electric arc in the cabinet can move outward through the pressure release passageway, and the plate body between adjacent through-hole and the branch arc body that sets up alone on the baffle this moment can block the outward movement of electric arc to cut apart into the little electric arc that length is littleer, more finely divided, the electric arc after being cut apart can become dispersion more, and length reduces a lot, can be more rapid extinguish outside the cubical switchboard, reduces external environment's harm greatly.
Description
Technical Field
The utility model relates to a switchgear technical field, concretely relates to cubical switchboard and cubical switchboard pressure relief device.
Background
With the development of the power industry in China and the common application of high-voltage switch cabinets in power systems, operators pay more and more attention to the safety of equipment, and the importance of ensuring personal safety is high. The cubical switchboard can cause the incident because factors such as the change of surrounding environment, the decline of insulator performance and maloperation in long-term use, wherein to the biggest inside arc fault of belonging to of personnel and equipment danger: when the inside electric arc that takes place of cubical switchboard broke down, can produce the electric arc of high power, high temperature, make the interior gas temperature of cabinet rise suddenly, if the cubical switchboard can not in time the pressure release, will lead to the cubical switchboard because of can't bear the internal pressure and explode, cause the injury to equipment and operating personnel on every side, consequently when designing the cubical switchboard, must consider that the cubical switchboard should have effectual pressure release measure.
The temperature rise prevention device, namely the pressure relief device, comprises a device frame, wherein heat dissipation mesh plates are arranged on the top surface and the side surface of the device frame, circular heat dissipation holes are formed in the heat dissipation mesh plates, a pressure relief cover is arranged on the heat dissipation mesh plates on the top surface of the device frame, the pressure relief cover is hinged with the device frame through a hinge, and pressure relief holes are formed in the pressure relief cover.
This pressure relief device can be opened by pressing the pressure relief cover to release the high temperature and high pressure gas inside the switchgear, but there are still some drawbacks: after the high-temperature and high-pressure gas rushes away the pressure relief cover, the electric arc in the switch cabinet can move outwards through the pressure relief channel in the pressure relief device, so that surrounding equipment is damaged and operators are injured.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a switch cabinet pressure relief device, which can solve the problem that the electric arc damages surrounding equipment and personal safety; another object of the present invention is to provide a switch cabinet using the pressure relief device, which has the advantage of high safety.
In order to achieve the above object, the utility model discloses well cubical switchboard pressure relief device adopts following technical scheme:
cubical switchboard pressure relief device, including the casing, be provided with the pressure release passageway in the casing to be provided with the pressure release lid in the opening part of pressure release passageway, this cubical switchboard pressure relief device is still including setting up the branch arc device in the pressure release passageway, divide the arc device to be the baffle, be provided with on the baffle to carry out the through-hole of cutting apart to electric arc, perhaps divide the arc body that the arc body is used for cutting apart electric arc for interval arrangement in the pressure release passageway.
The beneficial effects are that: after high temperature high-pressure gas rushed away the pressure release lid, electric arc in the cabinet can move outward through the pressure release passageway, and the plate body between adjacent through-hole and the branch arc body that sets up alone on the baffle this moment can block the outward movement of electric arc to cut apart into the little electric arc that length is littleer, more finely divided, the electric arc after being cut apart can become dispersion more, and length reduces a lot, can be more rapid extinguish outside the cubical switchboard, reduces external environment's harm greatly.
Further, the baffle is a flat plate arranged at the bottom of the shell.
The beneficial effects are that: and the structure is simple and the manufacturing and assembly of operators are convenient.
Furthermore, a corrugated secondary baffle is arranged between the pressure relief cover and the baffle, and a through hole for cutting the electric arc is arranged on the secondary baffle.
The beneficial effects are that: set up the second grade baffle between pressure release lid and baffle, can improve the segmentation effect to electric arc, in addition, adopt corrugated second grade baffle, can increase the segmentation area of second grade baffle to electric arc on electric arc moving path, further improved the segmentation effect to electric arc.
Furthermore, the secondary baffles are arranged at intervals, and two adjacent secondary baffles are arranged in a mode that wave crests are opposite to wave troughs.
The beneficial effects are that: set up a plurality of second grade baffles, the second grade baffle crest on upper strata is just to the trough of the second grade baffle of lower floor, and the second grade baffle trough on upper strata is just to the crest of the second grade baffle of lower floor, and the interval that two second grade baffles correspond between the position can change, has improved the divided randomness of electric arc, makes electric arc more finely cut dividedly.
Further, a fixing frame for fixing the secondary baffle is arranged in the shell.
The beneficial effects are that: the shell is separately provided with a fixing frame for fixing the secondary baffle, so that the operation is convenient.
Furthermore, the cross section of the fixing frame is U-shaped, and the opening of the fixing frame is provided with a sawtooth-shaped mounting groove which is matched with the wave crest and the wave trough in the secondary baffle in shape.
The beneficial effects are that: the fixing frame with the U-shaped cross section has the advantages of simple structure and light weight when the function of fixing the secondary baffle structure is realized; and the opening part is provided with a mounting groove, so that the secondary baffle can be more stably fixed in the shell.
Furthermore, one side of the fixing frame, which is back to the opening, is provided with a through hole for dividing the electric arc.
The beneficial effects are that: the through holes are formed in the fixing frame, so that the flow area of high-temperature and high-pressure gas can be increased, and the electric arc is divided to be more finely crushed.
Furthermore, one of the fixed frame and the shell is provided with a positioning block, and the other is provided with a positioning groove.
The beneficial effects are that: be equipped with constant head tank, locating piece between mount and casing, can carry out prepositioning to the mount, be favorable to operating personnel to fix the mount.
In order to achieve the above object, the utility model discloses well cubical switchboard adopts following technical scheme:
the switch cabinet comprises a cabinet body and a switch cabinet pressure relief device arranged on the cabinet body, wherein the switch cabinet pressure relief device comprises a shell, a pressure relief channel is arranged in the shell, a pressure relief cover is arranged at an opening of the pressure relief channel, the switch cabinet pressure relief device further comprises an arc dividing device arranged in the pressure relief channel, the arc dividing device is a baffle, a through hole for dividing electric arc is formed in the baffle, or the arc dividing device is an arc dividing body for dividing electric arc in the pressure relief channel in an interval arrangement mode.
The beneficial effects are that: after high temperature high-pressure gas rushed away the pressure release lid, electric arc in the cabinet can move outward through the pressure release passageway, the plate body between adjacent through-hole and the branch arc body that sets up alone on the baffle this moment can block the outward movement of electric arc, and cut apart into length littleer, the little electric arc in more bits, electric arc after being cut apart can become dispersion more, length reduces a lot, can be more rapid extinguish outside the cubical switchboard, harm to external environment reduces greatly, the security of cubical switchboard has been improved.
Further, the baffle is a flat plate arranged at the bottom of the shell.
The beneficial effects are that: and the structure is simple and the manufacturing and assembly of operators are convenient.
Furthermore, a corrugated secondary baffle is arranged between the pressure relief cover and the baffle, and a through hole for cutting the electric arc is arranged on the secondary baffle.
The beneficial effects are that: set up the second grade baffle between pressure release lid and baffle, can improve the segmentation effect to electric arc, in addition, adopt corrugated second grade baffle, can increase the segmentation area of second grade baffle to electric arc on electric arc moving path, further improved the segmentation effect to electric arc.
Furthermore, the secondary baffles are arranged at intervals, and two adjacent secondary baffles are arranged in a mode that wave crests are opposite to wave troughs.
The beneficial effects are that: set up a plurality of second grade baffles, the second grade baffle crest on upper strata is just to the trough of the second grade baffle of lower floor, and the second grade baffle trough on upper strata is just to the crest of the second grade baffle of lower floor, and the interval that two second grade baffles correspond between the position can change, has improved the divided randomness of electric arc, makes electric arc more finely cut dividedly.
Further, a fixing frame for fixing the secondary baffle is arranged in the shell.
The beneficial effects are that: the shell is separately provided with a fixing frame for fixing the secondary baffle, so that the operation is convenient.
Furthermore, the cross section of the fixing frame is U-shaped, and the opening of the fixing frame is provided with a sawtooth-shaped mounting groove which is matched with the wave crest and the wave trough in the secondary baffle in shape.
The beneficial effects are that: the fixing frame with the U-shaped cross section has the advantages of simple structure and light weight when the function of fixing the secondary baffle structure is realized; and the opening part is provided with a mounting groove, so that the secondary baffle can be more stably fixed in the shell.
Furthermore, one side of the fixing frame, which is back to the opening, is provided with a through hole for dividing the electric arc.
The beneficial effects are that: the through holes are formed in the fixing frame, so that the flow area of high-temperature and high-pressure gas can be increased, and the electric arc is divided to be more finely crushed.
Furthermore, one of the fixed frame and the shell is provided with a positioning block, and the other is provided with a positioning groove.
The beneficial effects are that: be equipped with constant head tank, locating piece between mount and casing, can carry out prepositioning to the mount, be favorable to operating personnel to fix the mount.
Drawings
Fig. 1 is a schematic structural diagram of a switch cabinet of the present invention;
fig. 2 is a schematic structural view of a switch cabinet pressure relief device in an embodiment of a switch cabinet of the present invention;
fig. 3 is a schematic view of the arrangement structure of the baffle and the second-stage baffle in the pressure relief device of the middle switch cabinet of the present invention;
fig. 4 is a schematic structural view of a secondary baffle in the pressure relief device of the middle switch cabinet of the present invention;
fig. 5 is a schematic structural view of a fixing frame in the pressure relief device of the switch cabinet of the present invention;
in the figure: 01-cabinet body; 02-switchgear pressure relief; 10-a housing; 20-a baffle plate; 30-a secondary baffle; 31-a circular through hole; 40-a fixing frame; 41-through holes; 42-mounting grooves; 43-a positioning block; 50-a pressure relief cover; 60-hinge.
Detailed Description
The specific embodiments of the switch cabinet and the switch cabinet pressure relief device thereof according to the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, it is an embodiment of the switch cabinet of the present invention: the switch cabinet comprises a cabinet body 01, a switch cabinet pressure relief device 02 is arranged on the top of the cabinet body 01, the switch cabinet pressure relief device 02 is communicated with the cabinet body 01, and high-temperature and high-pressure gas generated in the cabinet body 01 can be leaked out through the switch cabinet pressure relief device 02. The structure of the switch cabinet pressure relief device 02 is shown in fig. 2, the pressure relief device comprises a casing 10, the casing 10 is enclosed by four side plates, the side plates enclose a pressure relief channel which extends in the up-down direction and is used for high-temperature high-pressure gas to pass through and leak, the top of the casing 10, namely the outlet of the pressure relief channel, is hinged to a pressure relief cover 50 through a hinge 60, when the high-temperature high-pressure gas impacts the pressure relief cover 50, the pressure relief cover 50 can be turned outwards through the hinge 60, and therefore the opening in the top of the casing 10 is opened.
At the bottom opening of casing 10, be provided with baffle 20 as the arc device that divides, baffle 20 is whole to be the flat plate structure, is provided with square through-hole 21 on the baffle 20, can pass through by high temperature high pressure gas on the one hand, and on the other hand when electric arc passes through baffle 20, the part that is located between two adjacent through-holes on baffle 20 can block electric arc to cut apart electric arc, break into the little electric arc that length is littleer.
As shown in fig. 2 and 3, a secondary baffle 30 for secondary protection against an arc is provided between the pressure relief cover 50 and the baffle 20, and two secondary baffles 30 are provided at an interval in the vertical direction in the drawing. Specifically, the secondary baffle 30 is a corrugated plate having peaks and valleys, and as shown in fig. 4, circular through holes 31 for dividing the arc are formed in the secondary baffle 30, and the small arc divided by the baffle 20 is divided into more finely divided arcs by the circular through holes 31 when passing through the secondary baffle 30. The two secondary baffles 30 are arranged in a mode that the wave crests are aligned with the wave troughs when the two secondary baffles are arranged, namely, the wave crests of the secondary baffles 30 on the upper layer are just opposite to the wave troughs of the secondary baffles 30 on the lower layer, and the wave troughs of the secondary baffles 30 on the upper layer are just opposite to the wave crests of the secondary baffles 30 on the lower layer.
When installing baffle 20 and second grade baffle 30, the edge of baffle 20 is provided with the fastener perforation of fixing with casing 10, and second grade baffle 30 relies on mount 40 to realize fixed with casing 10, specifically speaking, as shown in fig. 5, mount 40 is the strengthening rib that the cross-section is the U-shaped, the opening part of strengthening rib is provided with the mounting groove 42 with second grade baffle 30 upper peak trough adaptation, mounting groove 42 is the cockscomb structure because of the peak trough, mounting groove 42 directly makes mount 40 can carry out the stabilizing support to second grade baffle 30 with the peak trough cooperation of second grade baffle 30.
The end of the fixing frame 40 is provided with a positioning block 43 matched with the side plate of the shell 10, the side plate is provided with a positioning groove matched with the positioning block 43, the fixing frame 40 realizes pre-positioning through the matching of the positioning groove and the positioning groove, then the fixing of the fixing frame 40 and the shell 10 is realized through a welding mode, and finally the secondary baffle 30 is welded and fixed on the fixing frame 40. Also, the plate body of the holder 40, which is open to the bottom of the case 10, is similarly provided with through holes 41 through which high-temperature and high-pressure gas passes, while the arc is divided.
Operating personnel uses the utility model provides a during cubical switchboard pressure relief device, link to each other pressure relief device's casing 10 and the cabinet body of cubical switchboard to make high temperature high-pressure gas and electric arc leak through the pressure release passageway in casing 10. The through-hole that sets up on baffle 20, the second grade baffle 30 in the casing 10 on the one hand can supply high temperature high-pressure gas to pass through, and on the other hand when electric arc passes through baffle 20, second grade baffle 30, the plate body that lies in between the adjacent through-hole can be cut apart electric arc, makes electric arc cut apart into the little electric arc that length is littleer, more finely divided when passing through baffle 20, second grade baffle 30, and its harm ability is less than the electric arc that is not divided far away when little electric arc moves outside the cubical switchboard.
In other embodiments, the arc dividing device may also take other forms, such as a rod, a filament, etc. directly disposed between the side plates to divide the arc passing through the pressure relief channel, the space between the filament and the dry object can allow high temperature and high pressure gas to pass through, and the filament and the rod can directly block and divide the arc, so that the arc becomes more fine, shorter and smaller, and is easier to extinguish outside the cabinet. Or, a baffle is arranged in the pressure relief channel, holes with larger area are arranged on the baffle, and the structures such as the filiform object and the rod-shaped object are arranged between the hole walls of the holes to divide the electric arc. It should be noted that the filament and the rod are used for directly dividing the arc, so that the filament and the rod can be connected to the two side walls, or can be arranged in the pressure relief channel in a manner that one end of the filament and the rod is fixed with the corresponding side wall and the other end of the filament and the rod is suspended.
In other embodiments, the baffle at the bottom of the shell may also be of a corrugated structure similar to the secondary baffle, and is not limited to a flat plate structure.
In other embodiments, an open space for passing high-temperature and high-pressure gas and electric arc is formed between the pressure relief cover and the baffle, and the secondary baffle can be omitted.
In other embodiments, the number of the secondary baffles can be adjusted according to the specification of the switch cabinet and the length of the pressure relief channel, for example, only one secondary baffle is provided or more than two secondary baffles are provided at intervals, but not limited to the scheme of only using two secondary baffles.
In other embodiments, the secondary baffles may be arranged in other ways, such as by facing the peaks and valleys of the corrugated secondary baffles, respectively.
In other embodiments, the secondary baffle may be directly fixed in the housing by welding, and is not limited to the solution of using a fixing frame to support the secondary baffle.
In other embodiments, the fixing frame for fixing the secondary baffle can adopt a completely closed plate structure, and is not provided with a through hole for dividing the electric arc.
In other embodiments, the fixing frame may be welded directly to the side plate of the housing, rather than being limited to the pre-positioning manner in which the positioning block is engaged with the positioning groove.
The utility model discloses well cubical switchboard pressure relief device's structure is the same with cubical switchboard pressure relief device's in the above-mentioned cubical switchboard embodiment structure, and the technological effect that can reach is also the same, consequently no longer repeated explanation about cubical switchboard pressure relief device's embodiment.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. Cubical switchboard pressure relief device, including the casing, be provided with the pressure release passageway in the casing to be provided with pressure release lid, its characterized in that in pressure release passageway's opening part: the switch cabinet pressure relief device also comprises an arc dividing device arranged in the pressure relief channel, wherein the arc dividing device is a baffle plate, through holes for dividing the electric arc are arranged on the baffle plate, or the arc dividing device is an arc dividing body which is arranged in the pressure relief channel at intervals and used for dividing the electric arc; a corrugated secondary baffle is arranged between the pressure relief cover and the baffle, and a through hole for cutting the electric arc is arranged on the secondary baffle; the secondary baffles are arranged at intervals, and two adjacent secondary baffles are arranged in a mode that wave crests are just opposite to wave troughs.
2. The switchgear pressure relief device of claim 1, wherein: the baffle is a flat plate arranged at the bottom of the shell.
3. The switchgear pressure relief device of claim 1, wherein: the shell is internally provided with a fixing frame for fixing the secondary baffle.
4. The switchgear pressure relief device of claim 3, wherein: the cross section of the fixing frame is U-shaped, and the opening of the fixing frame is provided with a sawtooth-shaped mounting groove which is matched with the wave crest and the wave trough in the secondary baffle in shape.
5. The switchgear pressure relief device of claim 4, wherein: one side of the fixed frame back to the opening is provided with a through hole for cutting the electric arc.
6. The switchgear pressure relief device of claim 3, wherein: one of the fixed mount and the shell is provided with a positioning block, and the other is provided with a positioning groove.
7. Cubical switchboard, including the cabinet body and the cubical switchboard pressure relief device of setting on the cabinet body, its characterized in that: the switch cabinet pressure relief device according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288875.0U CN211088939U (en) | 2019-08-09 | 2019-08-09 | Switch cabinet and switch cabinet pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921288875.0U CN211088939U (en) | 2019-08-09 | 2019-08-09 | Switch cabinet and switch cabinet pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211088939U true CN211088939U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921288875.0U Active CN211088939U (en) | 2019-08-09 | 2019-08-09 | Switch cabinet and switch cabinet pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211088939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736708A (en) * | 2020-12-30 | 2021-04-30 | 湖南平高开关有限公司 | Box transformer substation capable of avoiding internal arcing fault risk |
-
2019
- 2019-08-09 CN CN201921288875.0U patent/CN211088939U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736708A (en) * | 2020-12-30 | 2021-04-30 | 湖南平高开关有限公司 | Box transformer substation capable of avoiding internal arcing fault risk |
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