CN115967036A - Electric box with pressure relief function at top - Google Patents
Electric box with pressure relief function at top Download PDFInfo
- Publication number
- CN115967036A CN115967036A CN202111193395.8A CN202111193395A CN115967036A CN 115967036 A CN115967036 A CN 115967036A CN 202111193395 A CN202111193395 A CN 202111193395A CN 115967036 A CN115967036 A CN 115967036A
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- CN
- China
- Prior art keywords
- pressure relief
- pressure
- box
- electrical
- skylight
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention discloses an electrical cabinet with pressure relief at the top, which comprises a box body and an electrical cabinet arranged in the box body, and is characterized in that a pressure relief skylight is arranged at the top of the box body, the electrical cabinet is provided with a pressure relief opening, a pressure relief channel is arranged between the pressure relief skylight and the pressure relief opening for connection, and when the gas pressure in the electrical cabinet is overlarge, the gas is released upwards through the pressure relief opening, the pressure relief channel and the pressure relief skylight; according to the electrical cabinet with the pressure relief at the top, when the air pressure in the electrical cabinet is abnormally increased, the air is directly discharged upwards through the pressure relief channel and the pressure relief skylight, so that the high-temperature and high-pressure air or electric arc is prevented from diffusing in the box body to cause other equipment to be in failure, and the high-temperature and high-pressure air or electric arc is prevented from being discharged through the lower air inlet of the box body, and the personal safety of the periphery is protected.
Description
Technical Field
The invention relates to the technical field of pre-installed substations, in particular to an electrical box with a pressure relief function at the top.
Background
The electrical cabinet of the invention is internally provided with a plurality of electrical cabinets provided with electrical equipment, and comprises a pre-installed box type transformer substation, a box type switch station (switching station), a box type energy storage station and the like.
In an electrical cabinet, particularly an alternating current metal enclosed switch cabinet, when internal arcing faults are caused by insulation deterioration or overvoltage, the temperature and the pressure of insulating gas (commonly used SF6 gas) in the cabinet are increased sharply, and huge energy caused by arcing is released in an explosion mode, so that great safety threats are caused to surrounding people and equipment. Explosion is caused by switch cabinet faults in China at present, and fault air waves cause the cabinet door of the switch cabinet to fly out, so that personal safety is threatened occasionally.
Along with new energy automobile's quick popularization, the outdoor electric pile that fills generally adopts prepackage type box-type substation to supply power, and when charging, the probability that personnel and prepackage type box-type substation are close to increases by a wide margin, and how to ensure that the blast of arcing trouble can not endanger personal safety is a difficult problem that needs solve urgently.
The international electrotechnical commission and the national standard make more definite regulations on internal fault arc tests and criteria. Therefore, the research on the arcing mechanism in the switch cabinet and the research on measures for controlling the internal arcing hazard such as a pressure release mechanism, a pressure relief channel design and the like have great significance.
Along with the popularization and application of new forms of energy, battery energy storage cabinet also uses in a large number, and a large amount of batteries are installed in the box, in case one of them component trouble leads to burning to catch fire, very easily takes place the conflagration and spreads and initiate big accident. How to control the fault range is a technical problem which also needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide an electrical box with a pressure-relief top, which can protect the personal safety of the periphery and other equipment in the box body.
In order to achieve the purpose, the invention discloses an electrical cabinet with pressure relief at the top, which comprises a box body and an electrical cabinet and is characterized in that a pressure relief skylight is arranged at the top of the box body, the electrical cabinet is provided with a pressure relief opening, a pressure relief channel is arranged between the pressure relief skylight and the pressure relief opening for connection, and when the gas pressure in the electrical cabinet is overlarge, the gas is released upwards through the pressure relief opening, the pressure relief channel and the pressure relief skylight.
Compared with the prior art, the electrical cabinet with the pressure relief function at the top, disclosed by the invention, has the advantages that when the air pressure in the electrical cabinet is abnormally increased, the air is directly upwards discharged through the pressure relief channel and the pressure relief skylight, so that the high-temperature and high-pressure air or electric arc is prevented from diffusing in the box body to cause other equipment to break down, and the high-temperature and high-pressure air or electric arc is prevented from being discharged through the lower air inlet of the box body, so that the personal safety of the periphery is protected.
Preferably, the pressure relief port is mounted at the top of the electrical cabinet.
Preferably, the pressure relief opening is provided with a pressure relief valve, and the pressure relief valve is opened when the air pressure in the electrical cabinet exceeds a threshold value.
Preferably, the inner section of the pressure relief channel is gradually increased from the pressure relief opening end to the pressure relief skylight end.
Preferably, said pressure relief roof is provided with a sash seal.
Preferably, the window sash is hinged with the top of the box body.
Preferably, the periphery of the window sash is provided with a convex edge which is nested with a concave edge arranged on the pressure relief skylight.
Preferably, the concave edge faces the lower outer side of the box body and is provided with a drainage groove.
Preferably, a waterproof rubber ring is arranged on the periphery of the window sash.
Preferably, the joint part of the window sash and the box body is provided with a magnetic suction interface.
Drawings
Fig. 1 is a schematic side view of an electrical box with pressure relief at the top according to an embodiment of the invention.
Fig. 2 is a schematic perspective view of an embodiment of the present invention.
Detailed Description
In order to explain the technical contents, structural features, principles of implementation, and objects and effects achieved by the present invention in detail, the following description is made in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, the invention discloses an electrical cabinet with a pressure relief function at the top, which comprises a cabinet body 1 and an electrical cabinet 11, wherein the top 2 of the cabinet body is provided with a pressure relief skylight 3, the electrical cabinet 11 is provided with a pressure relief opening 5, a pressure relief channel 4 is arranged between the pressure relief skylight 3 and the pressure relief opening 5 for connection, and when the gas pressure in the electrical cabinet 11 is too high, the gas is released upwards through the pressure relief opening 5, the pressure relief channel 4 and the pressure relief skylight 3.
In order to facilitate connection and reduce pressure relief resistance, the pressure relief port 5 is installed at the top of the electrical cabinet 11. The pressure relief port 5 is provided with a relief valve (not shown) that opens when the air pressure inside the electrical cabinet exceeds a threshold value. The inner section of the pressure relief channel 4 is gradually increased from the end of the pressure relief opening 5 to the end of the pressure relief skylight 3, so that the pressure relief resistance is further reduced. The pressure relief skylight 3 is provided with a sash 6 for sealing. The sash 6 is hinged (not shown) to the top 2 of the housing. The periphery of the window sash 6 is provided with a convex edge 8 which is nested with a concave edge 7 arranged on the pressure relief skylight 3. The concave edge 7 is provided with a drainage groove 9 towards the outer lower side of the box body 1 so as to drain accumulated water on the concave edge 7. A waterproof rubber ring (not shown) may be further provided around the window sash 6 to enhance sealing performance. The butt joint part of the window sash 6 and the box body 1 is provided with a magnetic suction interface 10, and the magnetic suction force is slightly smaller than the minimum pressure required by the pressure relief gas.
When a plurality of electrical cabinets in the box body 1 have pressure relief requirements, one set of pressure relief device can be arranged on each electrical cabinet.
Compared with the prior art, the electrical cabinet with the pressure released at the top of the electrical cabinet 11 has the advantages that when the air pressure in the electrical cabinet is abnormally increased, the air is directly discharged upwards through the pressure release channel 4 and the pressure release skylight 3, so that the high-temperature and high-pressure air or electric arc is prevented from diffusing in the box body 1 to cause other equipment to break down, and the high-temperature and high-pressure air or electric arc is prevented from being discharged through the lower air inlet of the box body, so that the personal safety of the periphery is protected.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.
Claims (10)
1. The utility model provides an electric box of top pressure release, places in including the box the regulator cubicle of box, its characterized in that, the pressure release skylight is installed at the box top, the pressure release mouth is installed to the regulator cubicle, the pressure release skylight with install the pressure release passageway between the pressure release mouth and link up, work as when regulator cubicle inside gas pressure is too big, gaseous warp the pressure release mouth pressure release passageway and pressure release skylight release up.
2. The electrical cabinet with pressure relief at the top as set forth in claim 1, the pressure relief port being mounted at the top of the electrical cabinet.
3. The electrical cabinet with top pressure relief according to claim 1, the pressure relief port being fitted with a relief valve that opens when the air pressure inside the electrical cabinet exceeds a threshold value.
4. The electrical enclosure with pressure relief at the top of claim 1, wherein the pressure relief passage has an internal cross-section that increases from the pressure relief port end to the pressure relief louver end.
5. The electrical box of claim 1, with top pressure relief, the pressure relief skylight fitted with a sash seal.
6. The electrical box of claim 5, wherein the sash is hingedly attached to the top of the box.
7. The electrical box of claim 5, wherein the sash perimeter mounting flange nests with a recessed flange of a pressure relief window mounting flange.
8. The electrical box with pressure relief at the top of claim 7, wherein the concave edge is provided with a drainage groove towards the lower outside of the box body.
9. The electrical box of claim 5, wherein a waterproof rubber gasket is provided around the window sash.
10. The electrical enclosure with pressure relief at the top of claim 5, wherein the abutting portion of the sash and the enclosure is provided with a magnetic suction interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111193395.8A CN115967036A (en) | 2021-10-13 | 2021-10-13 | Electric box with pressure relief function at top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111193395.8A CN115967036A (en) | 2021-10-13 | 2021-10-13 | Electric box with pressure relief function at top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115967036A true CN115967036A (en) | 2023-04-14 |
Family
ID=87360408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111193395.8A Pending CN115967036A (en) | 2021-10-13 | 2021-10-13 | Electric box with pressure relief function at top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115967036A (en) |
-
2021
- 2021-10-13 CN CN202111193395.8A patent/CN115967036A/en active Pending
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |