CN203607676U - Sealing pressure relief device of switch cabinet - Google Patents
Sealing pressure relief device of switch cabinet Download PDFInfo
- Publication number
- CN203607676U CN203607676U CN201320832618.5U CN201320832618U CN203607676U CN 203607676 U CN203607676 U CN 203607676U CN 201320832618 U CN201320832618 U CN 201320832618U CN 203607676 U CN203607676 U CN 203607676U
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- aeration tank
- pressure
- plate
- relief device
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 10
- 238000005273 aeration Methods 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 238000010891 electric arc Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Abstract
A sealing pressure relief device of a switch cabinet comprises an aeration box. The aeration box is provided with two flange plates through fastening pieces. Each flange plate is provided with an extending arm and a slot. Elastic plates are inserted into the slots. A pressure relief plate is installed through the elastic plates and the extending arms. The periphery of each flange plate is fixed to the aeration box through a plurality of groups of fastening pieces. The periphery of each flange plate is fixed to the aeration box through bolts, nuts, spring washers and plat washers. The pressure relief plate is a metal plate covering a rubber layer. The sealing pressure relief device of the switch cabinet is reasonable in structure and convenient to operate.
Description
Technical field
The utility model relates to a kind of sealing pressure relief device of switch cubicle.
Background technology
Colliery industry, in each process of the production of mining, coal separation processing, storage, often may be revealed or various flammable explosive gas and the various dust of shedding that overflow.After this class material mixes with air, may become the mixture with explosion hazard, in the time that the concentration of mixture reaches explosion ratio scope, once occur that burning things which may cause a fire disaster can set off an explosion and the serious accident such as breaking out of fire.Therefore the electric equipment using in the hazardous environment of colliery industry all must possess explosion-proof performance.
Mine explosion-suppression positive voltage high-voltage distribution is a kind of electrical apparatus for explosive atmospheres, and it adopts positive pressure type structure, and electric elements are all installed in aeration tank, guarantees the projecting pressure of pressure of aeration tank internal protection gas, in order to avoid explosive mixture enters in aeration tank.In the time of normal operation, the air pressure in aeration tank is 0.02MPa-0.1MPa, when inflation loading pressure is higher than 0.1MPa or lower than 0.02MPa, sends at once and reports to the police or cut off the electricity supply.In the time that inflation in-box electric appliance is short-circuited fault in running, being created in electric arc raises aeration tank internal pressure, while exceeding pressure relief plate pressure, gases at high pressure puncture the pressure relief plate aeration tank internal pressure of releasing, make aeration tank can not overvoltage occur and be out of shape, the gas of simultaneously releasing is in flameproof cabinet, and the spark of device interior, electric arc do not allow to release to outside from any gap.
Aeration tank sealing pressure relief device is set in mine explosion-suppression positive voltage high-voltage distribution, be to guarantee the pressure relief device that moves completely of inflation in-box electric appliance, gas pressure pressure relief device of the prior art is the overvoltage pressure relief device as pressure vessel with relief valve or Pressure gauge conventionally.There is following shortcoming in it: pressure valve pressure is adjusted difficulty, and pressure valve pressure release is subject to placing restrictions on of valve aperture in the time that inflation in-box electric appliance is short-circuited overvoltage, and pressure release speed is slow, does not reach the effect of pressure pressure release.Use in addition Pressure gauge as aeration tank pressure monitor, when inflation in-box electric appliance while being short-circuited overvoltage Pressure gauge can move in the tripping operation of electric elements, the effect of cutting off the electricity supply, the pressure in can not venting aeration tank.
Utility model content
For the problems referred to above, the utility model aims to provide a kind of sealing pressure relief device of switch cubicle.
A kind of sealing pressure relief device of switch cubicle, comprise aeration tank, aeration tank by securing member, two ring flanges are installed, ring flange is provided with cantilever arm and slot, elastic plate inserts in slot, by elastic plate and cantilever arm, pressure relief plate is installed, on the periphery of ring flange, be fixed on aeration tank by many groups securing member, on the periphery of ring flange, pass through bolt, nut, spring washer and plain washer are fixed on aeration tank, pressure relief plate is the metallic plate that covers rubber layer, in actual use procedure, in the time of normal operation, in the time that inflation in-box electric appliance is short-circuited fault in running, being created in electric arc raises aeration tank internal pressure, while exceeding pressure relief plate pressure, elastic plate flicks, gases at high pressure puncture the pressure relief plate aeration tank internal pressure of releasing, make aeration tank can not overvoltage occur and be out of shape, the elastic plate of changing varying strength can be adjusted the compressive resistance of aeration tank.
The utility model is rational in infrastructure, easy and simple to handle, make pressure relief plate in the time of aeration tank overvoltage, carry out release pressure, aeration tank is not damaged, in running, can not make the Leakage Gas in aeration tank, guarantee the pressure of aeration tank, make the normally operation under pressure of inner electric elements, for the electric property of electric equipment provides safeguard.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Embodiment
Below in conjunction with accompanying drawing basis and specific embodiment, the utility model is described in further details.
As depicted in figs. 1 and 2, a kind of sealing pressure relief device of switch cubicle, comprise aeration tank 5, aeration tank 5 by securing member, two ring flanges 4 are installed, ring flange 4 is provided with cantilever arm 3 and slot, elastic plate 2 inserts in slot, by elastic plate 2 and cantilever arm 3, pressure relief plate 1 is installed, on the periphery of ring flange 4, be fixed on aeration tank 5 by many groups securing member, on the periphery of ring flange 4, pass through bolt 6, nut 7, spring washer 8 and plain washer 9 are fixed on aeration tank 5, pressure relief plate 1 is for covering the metallic plate of rubber layer, in actual use procedure, in the time of normal operation, in the time that the interior electrical equipment of aeration tank 5 is short-circuited fault in running, being created in electric arc raises aeration tank 5 internal pressures, while exceeding pressure relief plate 1 pressure, elastic plate 2 flicks, gases at high pressure puncture pressure relief plate 1 aeration tank 5 internal pressures of releasing, make aeration tank 5 can not overvoltage occur and be out of shape, the elastic plate 2 of changing varying strength can be adjusted the compressive resistance of aeration tank 5.
The above; it is only preferred embodiment of the present utility model; not in order to limit the utility model, any trickle modification that every foundation technical spirit of the present utility model is done above embodiment, be equal to and replace and improve, within all should being included in the protection range of technical solutions of the utility model.
Claims (1)
1. the sealing pressure relief device of a switch cubicle, comprise aeration tank, it is characterized in that, aeration tank by securing member, two ring flanges are installed, ring flange is provided with cantilever arm and slot, elastic plate inserts in slot, by elastic plate and cantilever arm, pressure relief plate is installed, on the periphery of ring flange, is fixed on aeration tank by many groups securing member, on the periphery of ring flange, pass through bolt, nut, spring washer and plain washer are fixed on aeration tank, and pressure relief plate is the metallic plate that covers rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320832618.5U CN203607676U (en) | 2013-12-18 | 2013-12-18 | Sealing pressure relief device of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320832618.5U CN203607676U (en) | 2013-12-18 | 2013-12-18 | Sealing pressure relief device of switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203607676U true CN203607676U (en) | 2014-05-21 |
Family
ID=50720338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320832618.5U Expired - Fee Related CN203607676U (en) | 2013-12-18 | 2013-12-18 | Sealing pressure relief device of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203607676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113241718A (en) * | 2021-05-28 | 2021-08-10 | 长园电力技术有限公司 | Cable intermediate head |
-
2013
- 2013-12-18 CN CN201320832618.5U patent/CN203607676U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113241718A (en) * | 2021-05-28 | 2021-08-10 | 长园电力技术有限公司 | Cable intermediate head |
| CN113241718B (en) * | 2021-05-28 | 2022-02-15 | 长园电力技术有限公司 | Cable intermediate head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |