CN212380747U - Power distribution cabinet overheat protection system of urban rail electric locomotive - Google Patents
Power distribution cabinet overheat protection system of urban rail electric locomotive Download PDFInfo
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- CN212380747U CN212380747U CN202020843196.1U CN202020843196U CN212380747U CN 212380747 U CN212380747 U CN 212380747U CN 202020843196 U CN202020843196 U CN 202020843196U CN 212380747 U CN212380747 U CN 212380747U
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- guide hole
- air guide
- power distribution
- distribution cabinet
- negative pressure
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Abstract
The utility model discloses a power distribution cabinet overheat protection system of an urban rail electric locomotive, which comprises a power distribution cabinet body, wherein a first negative pressure exhaust fan and a second negative pressure exhaust fan are respectively arranged at two sides of the bottom of the power distribution cabinet body, and the first negative pressure exhaust fan and the second negative pressure exhaust fan can exhaust the air in the power distribution cabinet body to the outside, so that negative pressure is formed in the power distribution cabinet body; the utility model discloses a when the inside naked light burning that takes place of simple structure switch board body, the oxygen source can be blocked to the rotary disk, meanwhile, inside a large amount of microthermal carbon dioxide gushed switch board body downwards to play the effect of cooling and putting out a fire.
Description
Technical Field
The utility model belongs to track locomotive fire control field.
Background
The negative pressure exhaust fan at the bottom of the power distribution cabinet of the urban rail electric locomotive discharges hot air inside the cabinet body continuously and forcedly, then the air with relatively cold outside is continuously supplemented into the cabinet body, and further the forced heat dissipation effect is achieved, however, the structure cannot play a role in inhibiting combustion when the fire overheating phenomenon occurs inside the power distribution cabinet.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the deficiencies in the prior art, the utility model provides a can block the urban rail electric locomotive's of oxygen source and forced cooling switch board overheat protection system.
The technical scheme is as follows: in order to achieve the purpose, the utility model discloses a power distribution cabinet overheat protection system of urban rail electric locomotive, including the power distribution cabinet body, the bottom both sides of power distribution cabinet body are installed respectively with first negative pressure air exhauster and second negative pressure air exhauster, first negative pressure air exhauster and second negative pressure air exhauster can take out the air in the power distribution cabinet body to the external world, thereby make the interior negative pressure that forms of power distribution cabinet body;
the distribution cover is characterized in that a horizontal disc-shaped distribution cover is integrally arranged on a cabinet top wall body of the distribution cabinet body, six air guide holes are uniformly distributed on a disc-shaped top wall of the distribution cover in a circumferential array manner, and the six air guide holes are a first air guide hole, a second air guide hole, a third air guide hole, a fourth air guide hole, a fifth air guide hole and a sixth air guide hole in sequence along the clockwise direction;
the lower side of the disc-shaped top wall is coaxially provided with a rotating disc, and the upper surface of the rotating disc is in sliding fit with the lower surface of the disc-shaped top wall; three communicating holes are circumferentially distributed on the rotating disc in an array manner, and the lower ends of the three communicating holes are communicated with the interior of the power distribution cabinet body; the rotation of the rotating disc enables the three communicating holes to be respectively communicated with the first air guide hole, the third air guide hole and the fifth air guide hole or respectively communicated with the second air guide hole, the fourth air guide hole and the sixth air guide hole;
a closed shell is integrally arranged on the upper side of the disc-shaped top wall, a cooling gas diversion cavity is formed in the shell, and the upper ends of the first gas guide hole, the third gas guide hole and the fifth gas guide hole are communicated with the cooling gas diversion cavity; the upper ends of the second air guide hole, the fourth air guide hole and the sixth air guide hole are communicated with the outside; the flame-retardant cooling gas supply pipe is arranged in the flame-retardant cooling gas distribution cavity, and the gas outlet end of the flame-retardant cooling gas supply pipe is communicated with the cooling gas distribution cavity.
Furthermore, an inner gear ring is integrally arranged on the lower side outline edge of the rotating disc, and the outer wall of the inner gear ring is in rotating fit with the inner wall of the gas distribution cover through a sealing bearing; the gear ring is characterized by further comprising a motor fixedly installed through a support, an output gear is arranged at the output end of the motor, and the output gear is meshed with the plurality of inner gear bodies on the inner gear ring.
Further, the dorsal part fixed mounting of switch board body has liquid carbon dioxide fire-extinguishing bottle, the derivation end of liquid carbon dioxide fire-extinguishing bottle does fire-retardant cooling gas supply pipe, install barometer, relief pressure valve and electromagnetic opening and closing valve on the fire-retardant cooling gas supply pipe in proper order.
Further, the first negative pressure exhaust fan and the second negative pressure exhaust fan are both axial flow fans.
Furthermore, dustproof filter screens are arranged in the second air guide hole, the fourth air guide hole and the sixth air guide hole.
Further, the back upper end bilateral symmetry of switch board body is provided with two spacing posts, two when the tail end of spacing post pushed up the wall, the wall had not contacted liquid carbon dioxide fire-extinguishing bottle yet.
Has the advantages that: the utility model discloses a when the inside naked light burning that takes place of simple structure switch board body, the oxygen source can be blocked to the rotary disk, meanwhile, inside a large amount of microthermal carbon dioxide gushed switch board body downwards to play the effect of cooling and putting out a fire.
Drawings
FIG. 1 is an overall front view of the device;
FIG. 2 is a first perspective view of the apparatus;
FIG. 3 is a second perspective view of the device;
FIG. 4 is a schematic top view of the apparatus;
FIG. 5 is a schematic view of the cutaway configuration of FIG. 4;
FIG. 6 is a bottom view of FIG. 5;
FIG. 7 is a schematic view of the removal of the rotating disk.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The overheat protection system for the power distribution cabinet of the urban rail electric locomotive shown in the attached drawings 1 to 7 comprises a power distribution cabinet body 1, wherein a first negative pressure exhaust fan 2 and a second negative pressure exhaust fan 3 are respectively installed on two sides of the bottom of the power distribution cabinet body 1, and the first negative pressure exhaust fan 2 and the second negative pressure exhaust fan 3 are both axial flow fans with outward air outlets; the first negative pressure exhaust fan 2 and the second negative pressure exhaust fan 3 can exhaust air in the power distribution cabinet body 1 to the outside, so that negative pressure is formed in the power distribution cabinet body 1; so as to continuously discharge the heat generated in the power distribution cabinet body 1 to the outside;
the power distribution cabinet comprises a cabinet top wall body 4 of a power distribution cabinet body 1 of the embodiment, wherein a horizontal disc-shaped gas distribution cover 5 is integrally arranged on the cabinet top wall body 4, at least six gas guide holes 7 are uniformly distributed on a disc-shaped top wall 17 of the gas distribution cover 5 in a circumferential array, and the six gas guide holes 7 are a first gas guide hole 7.1, a second gas guide hole 7.2, a third gas guide hole 7.3, a fourth gas guide hole 7.4, a fifth gas guide hole 7.5 and a sixth gas guide hole 7.6 in sequence along the clockwise direction;
the lower side of the disc-shaped top wall 17 of the embodiment is coaxially provided with a rotating disc 18, and the upper surface of the rotating disc 18 is in sliding fit with the lower surface of the disc-shaped top wall 17; three communicating holes 27 are circumferentially distributed on the rotating disc 18 in an array manner, and the lower ends of the three communicating holes 27 are communicated with the inside of the power distribution cabinet body 1; the rotation of the rotating disk 18 can enable the three communicating holes 27 to be respectively communicated with the first air guide hole 7.1, the third air guide hole 7.3 and the fifth air guide hole 7.5 or respectively communicated with the second air guide hole 7.2, the fourth air guide hole 7.4 and the sixth air guide hole 7.6;
a closed shell 6 is integrally arranged on the upper side of the disc-shaped top wall 17, a cooling gas diversion cavity 19 is arranged in the shell 6, and the upper ends of the first gas guide hole 7.1, the third gas guide hole 7.3 and the fifth gas guide hole 7.5 are communicated with the cooling gas diversion cavity 19; the upper ends of the second air guide hole 7.2, the fourth air guide hole 7.4 and the sixth air guide hole 7.6 are communicated with the outside, and dustproof filter screens are arranged in the second air guide hole 7.2, the fourth air guide hole 7.4 and the sixth air guide hole 7.6; the flame-retardant cooling gas supply pipe 10 is further included, and the gas outlet end of the flame-retardant cooling gas supply pipe 10 is communicated with the cooling gas distribution cavity 19.
The lower side contour edge of the rotating disc 18 is integrally provided with an inner gear ring 42, and the outer wall of the inner gear ring 42 is in rotating fit with the inner wall of the air distribution cover 5 through a sealing bearing 41; the gear transmission mechanism further comprises a motor 32 fixedly installed through a support 31, an output gear 33 is arranged at the output end of the motor 32, and the output gear 33 is meshed with a plurality of inner gear bodies on the inner gear ring 42.
The dorsal part fixed mounting of switch board body 1 has liquid carbon dioxide fire bottle 13, and the derivation end of liquid carbon dioxide fire bottle 13 is fire-retardant cooling gas supply pipe 10, installs barometer 9, relief pressure valve 8 and electromagnetic on-off valve 180 on the fire-retardant cooling gas supply pipe 10 in proper order.
The back upper end bilateral symmetry of switch board body 1 is provided with two spacing posts 11, and when the terminal top wall of two spacing posts 11, the wall had not contacted liquid carbon dioxide fire bottle 13 yet, and liquid carbon dioxide fire bottle 13 received the extrusion when can avoiding equipment to lean on the wall.
The working principle of the utility model is as follows:
when the interior of the power distribution cabinet body 1 normally works, the three communicating holes 27 on the rotating disk 18 are respectively communicated with the second air guide hole 7.2, the fourth air guide hole 7.4 and the sixth air guide hole 7.6; at the moment, the second air guide hole 7.2, the fourth air guide hole 7.4 and the sixth air guide hole 7.6 communicate the inside with the outside of the power distribution cabinet body 1, and hot air generated in the power distribution cabinet body 1 is pumped out to the outside by the first negative pressure exhaust fan 2 and the second negative pressure exhaust fan 3, so that negative pressure is formed in the power distribution cabinet body 1; therefore, relatively cold air outside is continuously supplemented into the power distribution cabinet body 1 through the second air guide hole 7.2, the fourth air guide hole 7.4 and the sixth air guide hole 7.6 under the action of negative pressure, and therefore stable and continuous cooling of electric devices in the power distribution cabinet body 1 is achieved;
when the temperature sensor or the smoke sensor senses that high temperature is generated inside the power distribution cabinet body 1 and a fire is started, the electromagnetic on-off valve 180 is immediately triggered, and at this time, liquid carbon dioxide inside the liquid carbon dioxide fire extinguishing bottle 13 rapidly gushes into the cooling gas diversion cavity 19 through the flame-retardant cooling gas supply pipe 10, so that positive pressure gas full of low-temperature carbon dioxide is formed in the cooling gas diversion cavity 19;
meanwhile, the motor 32 rapidly controls the output gear 33 to rotate, so that the inner gear ring 42 and the rotating disk 18 rotate by 60 degrees, at the moment, the rotating disk 18 rotates by 60 degrees, so that the three communication holes 27 in the rotating disk 18 are staggered with the second air guide holes 7.2, the fourth air guide holes 7.4 and the sixth air guide holes 7.6 respectively, and accordingly blocked external air enters a channel in the power distribution cabinet body 1, so that an oxygen supply path is blocked, and at the moment, the three communication holes 27 in the rotating disk 18 are communicated with the first air guide holes 7.1, the third air guide holes 7.3 and the fifth air guide holes 7.5 due to 60 degrees; at this moment, positive pressure gas filled with low-temperature carbon dioxide in the cooling gas diversion cavity 19 rapidly flows downwards into the interior of the power distribution cabinet body 1 through the first air guide hole 7.1, the third air guide hole 7.3 and the fifth air guide hole 7.5, so that the interior of the power distribution cabinet body 1 is finally filled with the low-temperature carbon dioxide, and the effects of cooling and fire extinguishing are achieved.
The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (6)
1. The overheat protection system for the power distribution cabinet of the urban rail electric locomotive comprises a power distribution cabinet body (1), wherein a first negative pressure exhaust fan (2) and a second negative pressure exhaust fan (3) are respectively installed on two sides of the bottom of the power distribution cabinet body (1), and the first negative pressure exhaust fan (2) and the second negative pressure exhaust fan (3) can exhaust air in the power distribution cabinet body (1) to the outside, so that negative pressure is formed in the power distribution cabinet body (1);
the method is characterized in that: the gas distribution cabinet is characterized in that a horizontal disc-shaped gas distribution cover (5) is integrally arranged on a cabinet top wall body (4) of a power distribution cabinet body (1), six gas guide holes (7) are uniformly distributed on a disc-shaped top wall (17) of the gas distribution cover (5) in a circumferential array mode, and the six gas guide holes (7) are sequentially a first gas guide hole (7.1), a second gas guide hole (7.2), a third gas guide hole (7.3), a fourth gas guide hole (7.4), a fifth gas guide hole (7.5) and a sixth gas guide hole (7.6) in the clockwise direction;
a rotating disc (18) is coaxially arranged on the lower side of the disc-shaped top wall (17), and the upper surface of the rotating disc (18) is in sliding fit with the lower surface of the disc-shaped top wall (17); three communicating holes (27) are circumferentially distributed on the rotating disc (18) in an array manner, and the lower ends of the three communicating holes (27) are communicated with the inside of the power distribution cabinet body (1); the rotation of the rotating disc (18) can enable the three communicating holes (27) to be communicated with the first air guide hole (7.1), the third air guide hole (7.3) and the fifth air guide hole (7.5) respectively or communicated with the second air guide hole (7.2), the fourth air guide hole (7.4) and the sixth air guide hole (7.6) respectively;
a closed shell (6) is integrally arranged on the upper side of the disc-shaped top wall (17), a cooling gas distribution cavity (19) is arranged in the shell (6), and the upper ends of the first gas guide hole (7.1), the third gas guide hole (7.3) and the fifth gas guide hole (7.5) are communicated with the cooling gas distribution cavity (19); the upper ends of the second air guide hole (7.2), the fourth air guide hole (7.4) and the sixth air guide hole (7.6) are communicated with the outside; the flame-retardant cooling gas distribution device further comprises a flame-retardant cooling gas supply pipe (10), and the gas outlet end of the flame-retardant cooling gas supply pipe (10) is communicated with the cooling gas distribution cavity (19).
2. The system according to claim 1, characterized in that: the lower side contour edge of the rotating disc (18) is integrally provided with an inner gear ring (42), and the outer wall of the inner gear ring (42) is in rotating fit with the inner wall of the gas distribution cover (5) through a sealing bearing (41); the gear box is characterized by further comprising a motor (32) fixedly mounted through a support (31), an output gear (33) is arranged at the output end of the motor (32), and the output gear (33) is meshed with a plurality of inner gear bodies on the inner gear ring (42).
3. The system according to claim 2, characterized in that: the dorsal part fixed mounting of switch board body (1) has liquid carbon dioxide fire bottle (13), the derivation end of liquid carbon dioxide fire bottle (13) does fire-retardant cooling gas supply pipe (10), install barometer (9), relief pressure valve (8) and electromagnetic opening and closing valve (180) on fire-retardant cooling gas supply pipe (10) in proper order.
4. The system according to claim 3, characterized in that: the first negative pressure exhaust fan (2) and the second negative pressure exhaust fan (3) are both axial flow fans.
5. The system according to claim 4, characterized in that: and dustproof filter screens are arranged in the second air guide hole (7.2), the fourth air guide hole (7.4) and the sixth air guide hole (7.6).
6. The system according to claim 5, characterized in that: the utility model discloses a liquid carbon dioxide fire extinguishing bottle, including switch board body (1), back upper end bilateral symmetry of switch board body (1) is provided with two spacing posts (11), two when the terminal top of spacing post (11) to the wall, the wall has not contacted yet liquid carbon dioxide fire extinguishing bottle (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020843196.1U CN212380747U (en) | 2020-05-20 | 2020-05-20 | Power distribution cabinet overheat protection system of urban rail electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020843196.1U CN212380747U (en) | 2020-05-20 | 2020-05-20 | Power distribution cabinet overheat protection system of urban rail electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212380747U true CN212380747U (en) | 2021-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020843196.1U Expired - Fee Related CN212380747U (en) | 2020-05-20 | 2020-05-20 | Power distribution cabinet overheat protection system of urban rail electric locomotive |
Country Status (1)
| Country | Link |
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| CN (1) | CN212380747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113382610A (en) * | 2021-06-18 | 2021-09-10 | 武汉铁路职业技术学院 | Automatic electrical control cabinet of electric locomotive and working method |
-
2020
- 2020-05-20 CN CN202020843196.1U patent/CN212380747U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113382610A (en) * | 2021-06-18 | 2021-09-10 | 武汉铁路职业技术学院 | Automatic electrical control cabinet of electric locomotive and working method |
| CN113382610B (en) * | 2021-06-18 | 2022-04-19 | 武汉铁路职业技术学院 | Automatic electrical control cabinet of electric locomotive and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210119 |