CN212343087U - Explosion-proof distribution box - Google Patents
Explosion-proof distribution box Download PDFInfo
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- CN212343087U CN212343087U CN202020873986.4U CN202020873986U CN212343087U CN 212343087 U CN212343087 U CN 212343087U CN 202020873986 U CN202020873986 U CN 202020873986U CN 212343087 U CN212343087 U CN 212343087U
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Abstract
The utility model discloses an explosion-proof distribution box, which comprises a box body and a door body, wherein the box body is connected with the door body in an airtight hinged manner; the box body is of a double-layer structure, the inner layer is a containing cavity for containing electrical equipment, the outer layer is a cooling cavity for ventilating and cooling the containing cavity, the cooling cavity covers the outside of the containing cavity, and the cooling cavity is isolated from the containing cavity; the left side and the right side of the box body are respectively and fixedly provided with a left cavity and a right cavity; the left cavity is internally provided with a gas storage tank for storing inert gas, a gas delivery end of the gas storage tank is communicated to the inside of the accommodating cavity through a gas pump, the right cavity is internally provided with a ventilation pipe, and the ventilation pipe is provided with a blower. Through the utility model discloses realize one kind and can ensure that inside electrical equipment and external environment are strictly isolated in order to prevent the explosion-proof block terminal of deflagration, can guarantee the effective cooling of inside electrical equipment again.
Description
Technical Field
The utility model relates to an electrical apparatus controlgear field, concretely relates to explosion-proof block terminal.
Background
The distribution box is formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet according to the electrical wiring requirement. According to the difference of service environment, have different technical requirement to the functional characteristic of block terminal, for example under environment such as part chemical industry, mine, filling station, because there is combustible gas or dust, ordinary block terminal probably causes deflagration even explosion, consequently needs the configuration explosion-proof block terminal of flame proof type.
Among the prior art, in order to realize the explosion-proof function of block terminal, should ensure that the interior locus that probably takes place the electric arc of block terminal is strict isolated with external environment, because current loop can send very high heat in the block terminal, inclosed space radiating effect is extremely poor, takes place the incident very easily.
Therefore, an explosion-proof distribution box capable of ensuring that the internal electrical equipment is strictly isolated from the external environment so as to prevent deflagration and simultaneously ensuring effective cooling of the internal electrical equipment is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing an explosion-proof block terminal, making it realize one kind and can ensure that inside electrical equipment and external environment are strict isolated in order to prevent the explosion-proof block terminal of deflagration, can guarantee the effective cooling of inside electrical equipment again.
In order to achieve the above object, the utility model provides a following technical scheme:
an explosion-proof distribution box comprises a box body and a door body, wherein the box body is in airtight hinged connection with the door body; the box body is of a double-layer structure, the inner layer is a containing cavity for containing electrical equipment, the outer layer is a cooling cavity for ventilating and cooling the containing cavity, the cooling cavity covers the outside of the containing cavity, and the cooling cavity is isolated from the containing cavity;
the left side and the right side of the box body are respectively and fixedly provided with a left cavity and a right cavity;
a gas storage tank for storing inert gas is arranged in the left cavity, a gas delivery end of the gas storage tank is communicated to the inside of the accommodating cavity through a gas pump, a vent pipe is arranged in the accommodating cavity, a gas outlet end of the vent pipe penetrates through the cooling cavity to be communicated with the outside, and a one-way valve is arranged at the gas outlet end of the vent pipe; a pressure detector is arranged in the accommodating cavity and is in signal connection with a controller, and the controller is electrically connected with the air pump;
the cooling cavity is characterized in that a ventilation pipe is arranged inside the right cavity, an air blower is arranged on the ventilation pipe, an air inlet end of the ventilation pipe is communicated with the outside, an air outlet end of the ventilation pipe is communicated to the lower portion of the right side of the cooling cavity, and a ventilation opening is formed in the bottom of the left side of the cooling cavity.
Furthermore, a cooling mechanism is further arranged inside the right cavity and comprises a water storage tank, a cooling device and a water pump, a water inlet end and a water outlet end of the water storage tank form a water circulation loop with the cooling device and the water pump through a water through pipe, and the water through pipe is spirally wound on the outer side of the ventilation pipe. So set up, utilize cooling device to reduce the temperature of water, the rethread water service pipe spiral winding carries out the heat transfer effect to the inside air of ventilation pipe in the outside of ventilation pipe to reduce the temperature of the interior air of ventilation pipe, make the air let in behind the cooling chamber more effectively to holding the chamber and cool down. Further guarantee the effective cooling of the inside electrical equipment of block terminal.
Furthermore, an air filtering device is also arranged on the ventilating pipe. So set up, through the micronic dust impurity in the air filter equipment filtered air, avoid micronic dust impurity to get into to cause the pollution in the cooling chamber.
Furthermore, three layers of air filter screens are arranged in the air filter device. So set up, ensure air filter's effect.
Furthermore, a plurality of radiating fins are arranged on the accommodating cavity, and radiating ends of the radiating fins are arranged in the cooling cavity. So set up, utilize the fin further to improve the cooling effect that holds the chamber to further guarantee the effective cooling of the inside electrical equipment of block terminal.
Further, the inert gas is nitrogen or argon. With such an arrangement, it is ensured that even if the electric facility inside the housing chamber generates sparks, explosion is difficult to occur by utilizing the non-flammability of nitrogen gas or argon gas.
Compared with the prior art, the beneficial effects of the utility model are that:
after the box body and the door body are closed in an airtight mode, the air pump is started to convey inert gas in the gas storage tank into the containing cavity, air in the originally containing cavity is discharged to the outside through the check valve along the vent pipe until the pressure detector detects that the inside of the containing cavity is at 1.1-1.2 atmospheric pressures, the check valve and the air pump are controlled to be closed through the controller, and high-pressure inert gas is filled in the containing cavity. According to the principle that the gas flowing direction is from high pressure to low pressure, the internal high pressure ensures that the air at relatively low pressure outside does not rush into the accommodating cavity, and the inert gas ensures that the explosion is difficult to occur even if the electric facilities inside the accommodating cavity generate sparks.
And then the blower starts to work continuously, and outside air enters the cooling cavity along the ventilation pipe and is exhausted from the ventilation opening on the other side along the cooling cavity. The air continuously flows outside the accommodating cavity to drive the heat generated by the accommodating cavity. When guaranteeing that inside electrical equipment and external environment are strict isolated in order to prevent the detonation, can guarantee the explosion-proof block terminal of inside electrical equipment effective cooling again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic external structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
the names of the components identified in the figures are as follows:
1. a box body; 101. an accommodating chamber; 102. a cooling chamber; 2. a door body; 3. a left cavity; 301. a gas storage tank; 302. an air pump; 303. a breather pipe; 304. a one-way valve; 305. a pressure detector; 4. a right cavity; 401. a vent pipe; 402. a blower; 403. a vent; 404. an air filtration device; 5. a cooling mechanism; 501. a water storage tank; 502. a cooling device; 503. a water pump; 504. a water pipe; 6. and a heat sink.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, only some embodiments, not all embodiments, of the present invention are described. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example (b):
an explosion-proof distribution box comprises a box body 1 and a door body 2, wherein the box body 1 is in airtight hinged connection with the door body 2; the box body 1 is of a double-layer structure, the inner layer is a containing cavity 101 for containing electrical equipment, the outer layer is a cooling cavity 102 for ventilating and cooling the containing cavity 101, the cooling cavity 102 covers the outside of the containing cavity 101, and the cooling cavity 102 is isolated from the containing cavity 101;
the left side and the right side of the box body 1 are respectively and fixedly provided with a left cavity 3 and a right cavity 4;
a gas storage tank 301 for storing inert gas is arranged in the left cavity 3, the gas transmission end of the gas storage tank 301 is communicated to the inside of the accommodating cavity 101 through a gas pump 302, a vent pipe 303 is arranged in the accommodating cavity 101, the gas outlet end of the vent pipe 303 penetrates through the cooling cavity 102 to be communicated with the outside, and a check valve 304 is arranged at the gas outlet end of the vent pipe 303; a pressure detector 305 is arranged in the accommodating cavity 101, the pressure detector 305 is in signal connection with a controller, and the controller is electrically connected with the air pump 302;
a ventilation pipe 401 is arranged inside the right cavity 4, a blower 402 is arranged on the ventilation pipe 401, an air inlet end of the ventilation pipe 401 is communicated with the outside, an air outlet end of the ventilation pipe 401 is communicated to the lower portion of the right side of the cooling cavity 102, and a ventilation opening 403 is arranged at the bottom of the left side of the cooling cavity 102.
The right cavity 4 is also internally provided with a cooling mechanism 5, the cooling mechanism 5 comprises a water storage tank 501, a cooling device 502 and a water pump 503, a water inlet end and a water outlet end of the water storage tank 501 form a water circulation loop with the cooling device 502 and the water pump 503 through a water pipe 504, and the water pipe 504 is spirally wound on the outer side of the ventilation pipe 401. So set up, utilize cooling device 502 to reduce the temperature of water, rethread water service pipe 504 spiral winding is in the outside of ventilation pipe 401, carries out the heat transfer effect to the inside air of ventilation pipe 401 to reduce the temperature of air in the ventilation pipe 401, make the air let in behind the cooling chamber 102 more effectively hold chamber 101 and cool down. Further guarantee the effective cooling of the inside electrical equipment of block terminal.
An air filter 404 is also provided on the vent tube 401. By such an arrangement, the air filter 404 filters the dust and dust impurities in the air, so as to prevent the dust and dust impurities from entering the cooling chamber 102 and causing pollution.
Three layers of air filters are arranged in the air filter device 404. So set up, ensure air filter's effect.
The accommodating cavity 101 is provided with a plurality of radiating fins 6, and radiating ends of the radiating fins 6 are arranged in the cooling cavity 102. So set up, utilize fin 6 further to improve the cooling effect that holds chamber 101 to further guarantee the effective cooling of the inside electrical equipment of block terminal.
The inert gas is nitrogen or argon. With such an arrangement, it is ensured that explosion hardly occurs even if a spark is generated in an electrical facility inside the housing chamber 101, by utilizing the non-flammability of nitrogen gas or argon gas.
The working principle of the embodiment is as follows:
after the box body 1 and the door body 2 are closed in an airtight manner, the air pump 302 is started to convey inert gas in the air storage tank 301 into the accommodating cavity 101, air in the originally accommodating cavity 101 is extruded to the outside through the one-way valve 304 along the vent pipe 303 until the pressure detector 305 detects that the inside of the accommodating cavity 101 is at 1.1-1.2 atmospheric pressures, the one-way valve 304 and the air pump 302 are controlled to be closed through the controller, and high-pressure inert gas is filled in the accommodating cavity 101. According to the principle that the gas flow direction is from high pressure to low pressure, the internal high pressure ensures that the air of relatively low pressure outside does not rush into the inside of the accommodating chamber 101, while the inert gas ensures that explosion is difficult to occur even if the electrical equipment inside the accommodating chamber 101 generates sparks.
Then, the blower 402 is continuously operated to introduce the outside air into the cooling chamber 102 along the ventilation pipe 401, and then to discharge the outside air from the ventilation opening 403 on the other side along the cooling chamber 102. The air continuously flows outside the accommodating cavity 101, and the heat generated by the accommodating cavity 101 is driven. When guaranteeing that inside electrical equipment and external environment are strict isolated in order to prevent the detonation, can guarantee the explosion-proof block terminal of inside electrical equipment effective cooling again.
Claims (6)
1. An explosion-proof distribution box comprises a box body and a door body, wherein the box body is in airtight hinged connection with the door body; the method is characterized in that: the box body is of a double-layer structure, the inner layer is a containing cavity for containing electrical equipment, the outer layer is a cooling cavity for ventilating and cooling the containing cavity, the cooling cavity covers the outside of the containing cavity, and the cooling cavity is isolated from the containing cavity;
the left side and the right side of the box body are respectively and fixedly provided with a left cavity and a right cavity;
a gas storage tank for storing inert gas is arranged in the left cavity, a gas delivery end of the gas storage tank is communicated to the inside of the accommodating cavity through a gas pump, a vent pipe is arranged in the accommodating cavity, a gas outlet end of the vent pipe penetrates through the cooling cavity to be communicated with the outside, and a one-way valve is arranged at the gas outlet end of the vent pipe; a pressure detector is arranged in the accommodating cavity and is in signal connection with a controller, and the controller is electrically connected with the air pump;
the cooling cavity is characterized in that a ventilation pipe is arranged inside the right cavity, an air blower is arranged on the ventilation pipe, an air inlet end of the ventilation pipe is communicated with the outside, an air outlet end of the ventilation pipe is communicated to the lower portion of the right side of the cooling cavity, and a ventilation opening is formed in the bottom of the left side of the cooling cavity.
2. The explosion proof electrical box of claim 1, wherein: the right cavity is internally provided with a cooling mechanism, the cooling mechanism comprises a water storage tank, a cooling device and a water pump, a water inlet end and a water outlet end of the water storage tank form a water circulation loop with the cooling device and the water pump through a water pipe, and the water pipe is spirally wound on the outer side of the ventilation pipe.
3. The explosion proof electrical box of claim 1, wherein: and an air filtering device is also arranged on the ventilating pipe.
4. The explosion proof electrical box of claim 3, wherein: and three layers of air filter screens are arranged in the air filter device.
5. The explosion proof electrical box of claim 1, wherein: the accommodating cavity is provided with a plurality of radiating fins, and radiating ends of the radiating fins are arranged in the cooling cavity.
6. The explosion proof electrical box of claim 1, wherein: the inert gas is nitrogen or argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020873986.4U CN212343087U (en) | 2020-05-22 | 2020-05-22 | Explosion-proof distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020873986.4U CN212343087U (en) | 2020-05-22 | 2020-05-22 | Explosion-proof distribution box |
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| Publication Number | Publication Date |
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| CN212343087U true CN212343087U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020873986.4U Active CN212343087U (en) | 2020-05-22 | 2020-05-22 | Explosion-proof distribution box |
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| CN (1) | CN212343087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418549A (en) * | 2021-06-16 | 2021-09-21 | 二工防爆科技股份有限公司 | Explosion-proof detector |
| CN114447836A (en) * | 2022-02-09 | 2022-05-06 | 嘉兴南湖学院 | Full-power medium-voltage converter with inertia protection function for wind power |
-
2020
- 2020-05-22 CN CN202020873986.4U patent/CN212343087U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418549A (en) * | 2021-06-16 | 2021-09-21 | 二工防爆科技股份有限公司 | Explosion-proof detector |
| CN114447836A (en) * | 2022-02-09 | 2022-05-06 | 嘉兴南湖学院 | Full-power medium-voltage converter with inertia protection function for wind power |
| CN114447836B (en) * | 2022-02-09 | 2024-03-08 | 嘉兴南湖学院 | Full-power medium-voltage converter with inertia protection for wind power |
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