CN112054397B - Explosion-proof structure of door plate of medium-voltage power distribution cabinet - Google Patents
Explosion-proof structure of door plate of medium-voltage power distribution cabinet Download PDFInfo
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- CN112054397B CN112054397B CN202010960880.2A CN202010960880A CN112054397B CN 112054397 B CN112054397 B CN 112054397B CN 202010960880 A CN202010960880 A CN 202010960880A CN 112054397 B CN112054397 B CN 112054397B
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- explosion
- proof
- side wall
- door panel
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses an explosion-proof structure of a door plate of a medium-voltage power distribution cabinet, which comprises a cabinet body, a door plate body and an explosion-proof plate, wherein the side wall of the door plate body is hinged on the inner wall of the cabinet body, an explosion-proof cavity is formed in the door plate body, the explosion-proof plate penetrates through the left side wall of the door plate body and is connected in the side wall of the door plate body in a sliding manner, a mounting groove is formed in the center of the right side wall of the explosion-proof plate, a touch switch is arranged on the side wall of the mounting groove, a threaded rod is fixedly mounted in the center of the mounting groove, the other end of the threaded rod is connected with a rotary drum in a threaded manner, the other end of the rotary drum is rotatably connected to the inner wall of the explosion-proof cavity, a second spring is fixedly mounted on the inner wall of the rotary drum, and the other end of the second spring abuts against one end of the threaded rod, which is far away from the explosion-proof plate. According to the invention, the door plate body is prevented from being opened by impact force generated by explosion, and the damage to pedestrians around the cabinet body is avoided.
Description
Technical Field
The invention relates to the technical field of power distribution cabinet door plates, in particular to an explosion-proof structure of a medium-voltage power distribution cabinet door plate.
Background
The distribution cabinet (case) is a final-stage device of a distribution system and is divided into a power distribution cabinet (case), a lighting distribution cabinet (case) and a metering cabinet (case). The power distribution cabinet is a general name of a motor control center. The power distribution cabinet is used in the occasions with dispersed loads and less loops; the motor control center is used for occasions with concentrated loads and more loops. They distribute the power of a certain circuit of the upper-level distribution equipment to the nearby loads. This level of equipment should provide protection, monitoring and control of the load. The installation requirement of the distribution board (box) is that the distribution board (box) is made of non-flammable materials; production places and offices with low electric shock risk can be provided with open-type distribution boards; the closed cabinet is required to be installed in places such as processing workshops, casting, forging, heat treatment, boiler rooms, carpentry rooms and the like with high electric shock risk or poor operation environment; in dangerous operation places with conductive dust or flammable and explosive gas, closed or explosion-proof electrical facilities must be installed; all electrical elements, instruments, switches and circuits of the distribution board (box) are orderly arranged, so that the distribution board is firm to mount and convenient to operate.
The explosion-proof structure is installed at present switch board door plant at the in-process that uses seldom, in case the inside explosion that takes place of switch board, causes the injury to article and pedestrian around the switch board very easily, and the thermal diffusivity of current switch board also not good enough.
In order to solve the problems, the invention provides an explosion-proof structure of a door plate of a medium-voltage power distribution cabinet.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, an explosion-proof structure is rarely installed in the using process of the door panel of the existing power distribution cabinet, once the interior of the power distribution cabinet explodes, objects and pedestrians around the power distribution cabinet are easily damaged, and the heat dissipation performance of the existing power distribution cabinet is not good enough, so that the explosion-proof structure of the door panel of the medium-voltage power distribution cabinet is provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
an explosion-proof structure of a door plate of a medium-voltage power distribution cabinet comprises a cabinet body, a door plate body and an explosion-proof plate, wherein the side wall of the door plate body is hinged on the inner wall of the cabinet body, an explosion-proof cavity is formed in the door plate body, the explosion-proof plate penetrates through the left side wall of the door plate body and is connected in the side wall of the door plate body in a sliding manner, a mounting groove is formed in the center of the right side wall of the explosion-proof plate, a touch switch is arranged on the side wall of the mounting groove, a threaded rod is fixedly mounted at the center of the mounting groove, the other end of the threaded rod is in threaded connection with a rotary drum, the other end of the rotary drum is rotatably connected on the inner wall of the explosion-proof cavity, a second spring is fixedly mounted on the inner wall of the rotary drum, the other end of the second spring abuts against one end of the threaded rod, which is deviated from the explosion-proof plate, a toothed ring is fixedly sleeved on the side wall of the rotary drum, and two gears are symmetrically meshed and connected on the toothed ring, every the center department of gear all rotates through the electro-magnet to be connected on the inner wall in explosion-proof chamber, every the gear deviates from electro-magnet one side fixed mounting has a permanent magnet, the right side wall internal symmetry fixed mounting of explosion-proof board has two electro-magnets, every the electro-magnet all corresponds with the permanent magnet, every the electro-magnet all with touch switch electric connection, the thermovent has been seted up to explosion-proof board internal symmetry, be provided with heat dissipation mechanism in the thermovent, explosion-proof intracavity symmetry is provided with two explosion-proof subassemblies.
Preferably, heat dissipation mechanism includes servo motor and flabellum, in the servo motor fixed mounting thermovent, flabellum fixed mounting is at servo motor's output, the left end fixed mounting of thermovent has No. two filter screens, the right-hand member fixed mounting of thermovent has No. three filter screens, the interior symmetry fixed mounting of door plant body front lateral wall has two filter screens No. one.
Preferably, the explosion-proof assembly comprises a sealing pipe, the sealing pipe is fixedly installed on the inner wall of the explosion-proof cavity, a cavity is formed in the sealing pipe, a telescopic air bag is arranged in the cavity, and one end of the telescopic air bag is fixedly installed on the inner wall of the sealing pipe.
Preferably, the other end fixed mounting of flexible gasbag has the preforming, the one end fixed mounting that the preforming deviates from flexible gasbag has the push rod, the other end of push rod runs through the lateral wall of sealed tube and rotates and be connected with the dwang, the one end that the dwang deviates from the push rod rotates and connects on the lateral wall of blast resistant plate.
Preferably, the vent pipe has been seted up to the one end that the sealed tube deviates from flexible gasbag, sliding connection has the sealing plug in the vent pipe, one side fixed mounting that the sealing plug deviates from flexible gasbag has the fixture block.
Preferably, one end, away from the sealing plug, of the clamping block penetrates through the side wall of the door plate body and abuts into the cabinet body, a clamping groove matched with the clamping block is formed in the inner wall of the cabinet body, and the clamping block abuts into the clamping groove.
Preferentially, a plurality of springs are symmetrically arranged between the explosion-proof plate and the inner wall of the door plate body, one end of each spring is fixedly installed on the side wall of the explosion-proof plate, and the other end of each spring is fixedly installed on the inner wall of the door plate body.
Preferentially, be provided with the handle on the right side wall of door plant body, be provided with anti-skidding line on the handle.
Compared with the prior art, the invention has the beneficial effects that:
when the interior of the cabinet body explodes, impact force generated by explosion can press the explosion-proof plate, so that the explosion-proof plate presses the rotating rod rightwards, the rotating rod can push the push rod to compress the telescopic airbag in the sealing pipe, the telescopic airbag can push the sealing plug to slide towards the direction away from the telescopic airbag, and the clamping block on the side wall of the sealing plug is pressed into the clamping groove, so that the stability between the door panel body and the cabinet body is further strengthened, and the door panel body is prevented from being washed away by the impact force generated by explosion and injuring pedestrians around the cabinet body; meanwhile, the explosion-proof plate moves the compression spring rightwards through the threaded rod, the rotary drum rotates, the rotary drum can drive the gear ring to rotate, the gear ring rotates for three circles to drive the two gears to rotate for one circle, the permanent magnet rotates for three hundred and sixty degrees, the rotary drum just completely props into the mounting groove, the side wall of the rotary drum can extrude the touch switch and touch the touch switch, current is conducted in the electromagnet after the touch switch is touched, the magnetic poles at the two ends of the electromagnet are opposite to the magnetic poles at the two ends of the permanent magnet after the electromagnet is electrified, mutual repulsive force is generated between the electromagnet and the permanent magnet, impact force generated by part of explosion on the explosion-proof plate is offset, the explosion-proof performance of the door panel body is further improved, damage to objects and pedestrians around the power distribution cabinet is reduced, the servo motor drives the fan blades to rotate through the output end, and cold air outside the cabinet body is sucked into the cabinet body, the possibility of explosion inside the cabinet is reduced.
Drawings
Fig. 1 is a schematic front structural view of an explosion-proof structure of a door panel of a medium voltage distribution cabinet according to the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
fig. 3 is an enlarged schematic view of fig. 1 at B.
In the figure: the anti-explosion door comprises a push rod 1, a filter screen 2, a rotating rod 3, a filter screen 4, a spring 5, fan blades 6, an anti-explosion plate 7, a servo motor 8, a filter screen 9, a touch switch 10, a threaded rod 11, a mounting groove 12, a permanent magnet 13, an electromagnet 14, a rotary drum 15, a spring 16, a toothed ring 17, a gear 18, a door plate body 19, a clamping groove 20, a clamping block 21, a cabinet 22, a sealing plug 23, a sealing tube 24, a cavity 25 and a telescopic air bag 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, an explosion-proof structure of a door panel of a medium voltage power distribution cabinet comprises a cabinet body 22, a door panel body 19 and an explosion-proof plate 7, wherein a handle is arranged on the right side wall of the door panel body 19, anti-skid lines are arranged on the handle, a plurality of springs 5 are symmetrically arranged between the explosion-proof plate 7 and the inner wall of the door panel body 19, one end of each spring 5 is fixedly arranged on the side wall of the explosion-proof plate 7, the other end of each spring 5 is fixedly arranged on the inner wall of the door panel body 19, the side wall of the door panel body 19 is hinged on the inner wall of the cabinet body 22, an explosion-proof cavity is arranged in the door panel body 19, the explosion-proof plate 7 penetrates through the left side wall of the door panel body 19 and is slidably connected in the side wall of the door panel body 19, a mounting groove 12 is arranged at the center of the right side wall of the explosion-proof plate 7, a touch switch 10 is arranged on the side wall of the mounting groove 12, a threaded rod 11 is fixedly arranged at the center of the mounting groove 12, the other end of the threaded rod 11 is in threaded connection with a rotary drum 15, the other end of the rotary drum 15 is rotatably connected to the inner wall of the explosion-proof cavity, a second spring 16 is fixedly installed on the inner wall of the rotary drum 15, the other end of the second spring 16 abuts against one end, away from the explosion-proof plate 7, of the threaded rod 11, a toothed ring 17 is fixedly sleeved on the side wall of the rotary drum 15, two gears 18 are symmetrically meshed and connected to the toothed ring 17, the center of each gear 18 is rotatably connected to the inner wall of the explosion-proof cavity through an electromagnet 14, a permanent magnet 13 is fixedly installed on one side, away from the electromagnet 14, of each gear 18, two electromagnets 14 are symmetrically and fixedly installed in the right side wall of the explosion-proof plate 7, each electromagnet 14 corresponds to a permanent magnet 13, each electromagnet 14 is electrically connected with a touch switch 10, the explosion-proof plate 7 moves the second spring 16 rightwards through the threaded rod 11 to enable the rotary drum 15 to rotate, the rotary drum 15 drives the toothed ring 17 to rotate, the gear ring 17 rotates three circles to drive the two gears 18 to rotate one circle, so that the permanent magnet 13 rotates three hundred sixty degrees, the rotary drum 15 is just completely pushed into the installation groove 12, the side wall of the rotary drum 15 can extrude the touch switch 10 and touch the touch switch 10, the touch switch 10 touches the electromagnet 14 to conduct current, the magnetic poles at two ends of the electromagnet 14 are opposite to the magnetic poles at two ends of the permanent magnet 13 after the electromagnet 14 is electrified, so that mutual repulsive force is generated between the electromagnet 14 and the permanent magnet 13, impact force generated by partial explosion on the explosion plate 7 is counteracted, the explosion-proof performance of the door plate body 19 is further improved, damage to objects and pedestrians around the power distribution cabinet is reduced, heat dissipation ports are symmetrically formed in the explosion plate 7, heat dissipation mechanisms are arranged in the heat dissipation ports, the servo motor 8 drives the fan blades 6 to rotate through the output end, cold air outside the cabinet body 22 is sucked into the cabinet body 22, the possibility of explosion inside the cabinet body 22 is reduced, the heat dissipation mechanism comprises a servo motor 8 and fan blades 6, the servo motor 8 is fixedly installed in a heat dissipation port, the fan blades 6 are fixedly installed at the output end of the servo motor 8, the left end of the heat dissipation port is fixedly installed with a second filter screen 4, the right end of the heat dissipation port is fixedly installed with a third filter screen 9, two first filter screens 2 are symmetrically and fixedly installed in the front side wall of the door panel body 19, two explosion-proof assemblies are symmetrically arranged in the explosion-proof cavity, each explosion-proof assembly comprises a sealing pipe 24, the sealing pipe 24 is fixedly installed on the inner wall of the explosion-proof cavity, a cavity 25 is formed in the sealing pipe 24, a telescopic air bag 26 is arranged in the cavity 25, one end of the telescopic air bag 26 is fixedly installed on the inner wall of the sealing pipe 24, the other end of the telescopic air bag 26 is fixedly installed with a pressing sheet, and one end of the pressing sheet, which is far away from the telescopic air bag 26, is fixedly installed with a push rod 1, the other end of the push rod 1 penetrates through the side wall of the sealing tube 24 and is rotatably connected with the rotating rod 3, one end of the rotating rod 3, which is far away from the push rod 1, is rotatably connected to the side wall of the explosion-proof plate 7, one end of the sealing tube 24, which is far away from the telescopic airbag 26, is provided with a vent pipe, a sealing plug 23 is slidably connected in the vent pipe, one side, which is far away from the telescopic airbag 26, of the sealing plug 23 is fixedly provided with a clamping block 21, one end, which is far away from the sealing plug 23, of the clamping block 21 penetrates through the side wall of the door panel body 19 and is abutted into the cabinet body 22, when the interior of the cabinet body 22 explodes, the impact force generated by the explosion can press the explosion-proof plate 7, so that the explosion-proof plate 7 presses the rotating rod 3 to the right, the rotating rod 3 can push the push rod 1 to compress the telescopic airbag 26 in the sealing tube 24, so that the sealing plug 23 can push the sealing plug 23 to slide towards the direction far away from the telescopic airbag 26, and the clamping block 21 on the side wall of the clamping groove 20 can be abutted into the clamping groove 20, further, the stability between the door panel body 19 and the cabinet body 22 is strengthened, a clamping groove 20 matched with the clamping block 21 is formed in the inner wall of the cabinet body 22, and the clamping block 21 abuts against the clamping groove 20.
In the invention, when the interior of the cabinet body 22 explodes, the impact force generated by the explosion can press the explosion-proof plate 7, so that the explosion-proof plate 7 presses the rotating rod 3 rightwards, the rotating rod 3 can push the push rod 1 to compress the telescopic airbag 26 in the sealing tube 24, the telescopic airbag 26 can push the sealing plug 23 to slide towards the direction departing from the telescopic airbag 26, and the clamping block 21 on the side wall of the sealing plug 23 is abutted into the clamping groove 20, thereby further strengthening the stability between the door panel body 19 and the cabinet body 22, and avoiding the impact force generated by the explosion from rushing the door panel body 19 away and causing injury to pedestrians around the cabinet body 22; meanwhile, the explosion-proof plate 7 moves the compression spring 16 rightwards through the threaded rod 11, the rotary drum 15 rotates, the rotary drum 15 can drive the gear ring 17 to rotate, the gear ring 17 rotates three circles to drive the two gears 18 to rotate one circle, the permanent magnet 13 rotates three hundred sixty degrees, the rotary drum 15 just completely props into the mounting groove 12, the side wall of the rotary drum 15 can extrude the touch switch 10 and touch the touch switch 10, current is conducted in the electromagnet 14 after the touch switch 10 is touched, the magnetic poles at two ends of the electromagnet 14 are opposite to the magnetic poles at two ends of the permanent magnet 13 after the electromagnet 14 is electrified, mutual repulsion force is generated between the electromagnet 14 and the permanent magnet 13, impact force generated by part of explosion on the explosion-proof plate 7 is offset, the explosion-proof performance of the door plate body 19 is further improved, damage to objects and blades around the power distribution cabinet is reduced, and the servo motor 8 drives the rotary drum 6 to rotate through the output end, the cold air outside the cabinet 22 is sucked into the cabinet 22, and the possibility of explosion inside the cabinet 22 is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An explosion-proof structure of a door panel of a medium-voltage power distribution cabinet comprises a cabinet body (22), a door panel body (19) and an explosion-proof plate (7), and is characterized in that the side wall of the door panel body (19) is hinged to the inner wall of the cabinet body (22), an explosion-proof cavity is formed in the door panel body (19), the explosion-proof plate (7) penetrates through the left side wall of the door panel body (19) and is connected in the side wall of the door panel body (19) in a sliding manner, a mounting groove (12) is formed in the center of the right side wall of the explosion-proof plate (7), a touch switch (10) is arranged on the side wall of the mounting groove (12), a threaded rod (11) is fixedly mounted in the center of the mounting groove (12), the other end of the threaded rod (11) is connected with a rotary drum (15) in a threaded manner, the other end of the rotary drum (15) is rotatably connected to the inner wall of the explosion-proof cavity, a second spring (16) is fixedly mounted on the inner wall of the rotary drum (15), the other end of the second spring (16) is propped against one end of the threaded rod (11) departing from the explosion-proof plate (7), a gear ring (17) is fixedly sleeved on the side wall of the rotary drum (15), two gears (18) are symmetrically meshed and connected to the gear ring (17), the center of each gear (18) is rotatably connected to the inner wall of the explosion-proof cavity through an electromagnet (14), a permanent magnet (13) is fixedly mounted on one side of each gear (18) departing from the electromagnet (14), two electromagnets (14) are symmetrically and fixedly installed in the right side wall of the explosion-proof plate (7), each electromagnet (14) corresponds to the permanent magnet (13), each electromagnet (14) is electrically connected with the touch switch (10), the explosion-proof plate is characterized in that heat dissipation ports are symmetrically formed in the explosion-proof plate (7), heat dissipation mechanisms are arranged in the heat dissipation ports, and two explosion-proof assemblies are symmetrically arranged in the explosion-proof cavity.
2. The explosion-proof structure of medium voltage distribution cabinet door plant of claim 1, characterized in that, heat dissipation mechanism includes servo motor (8) and flabellum (6), in servo motor (8) fixed mounting heat dissipation port, flabellum (6) fixed mounting is at the output of servo motor (8), the left end fixed mounting of heat dissipation port has No. two filter screens (4), the right-hand member fixed mounting of heat dissipation port has No. three filter screens (9), door plant body (19) front side wall interior symmetry fixed mounting has two filter screens (2).
3. The explosion-proof structure of the door panel of the medium voltage distribution cabinet according to claim 1, wherein the explosion-proof assembly comprises a sealing tube (24), the sealing tube (24) is fixedly installed on the inner wall of the explosion-proof cavity, a cavity (25) is formed in the sealing tube (24), a telescopic air bag (26) is formed in the cavity (25), and one end of the telescopic air bag (26) is fixedly installed on the inner wall of the sealing tube (24).
4. The explosion-proof structure of the door panel of the medium voltage distribution cabinet according to claim 3, wherein a pressing sheet is fixedly installed at the other end of the telescopic air bag (26), a push rod (1) is fixedly installed at one end of the pressing sheet departing from the telescopic air bag (26), the other end of the push rod (1) penetrates through the side wall of the sealing tube (24) and is rotatably connected with a rotating rod (3), and one end of the rotating rod (3) departing from the push rod (1) is rotatably connected to the side wall of the explosion-proof plate (7).
5. The explosion-proof structure of the door panel of the medium voltage distribution cabinet according to claim 3, wherein a vent pipe is opened at one end of the sealing pipe (24) departing from the telescopic air bag (26), a sealing plug (23) is slidably connected in the vent pipe, and a clamping block (21) is fixedly installed at one side of the sealing plug (23) departing from the telescopic air bag (26).
6. The explosion-proof structure of the door panel of the medium voltage distribution cabinet according to claim 5, wherein one end of the fixture block (21) departing from the sealing plug (23) penetrates through the side wall of the door panel body (19) and abuts into the cabinet body (22), a clamping groove (20) matched with the fixture block (21) is formed in the inner wall of the cabinet body (22), and the fixture block (21) abuts into the clamping groove (20).
7. The explosion-proof structure of the door panel of the medium voltage distribution cabinet according to claim 1, wherein a plurality of springs (5) are symmetrically arranged between the explosion-proof plate (7) and the inner wall of the door panel body (19), one end of each spring (5) is fixedly installed on the side wall of the explosion-proof plate (7), and the other end of each spring (5) is fixedly installed on the inner wall of the door panel body (19).
8. The explosion-proof structure of a door panel of a medium voltage distribution cabinet according to claim 1, characterized in that a handle is arranged on the right side wall of the door panel body (19), and the handle is provided with anti-skid lines.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010960880.2A CN112054397B (en) | 2020-09-14 | 2020-09-14 | Explosion-proof structure of door plate of medium-voltage power distribution cabinet |
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| CN202010960880.2A CN112054397B (en) | 2020-09-14 | 2020-09-14 | Explosion-proof structure of door plate of medium-voltage power distribution cabinet |
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| CN112054397B true CN112054397B (en) | 2022-04-01 |
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| CN112867332B (en) * | 2021-01-19 | 2023-01-06 | 中咨数据有限公司 | Information processing device and installation method thereof |
| CN112918858B (en) * | 2021-01-28 | 2022-10-18 | 国网浙江省电力有限公司杭州市临平区供电公司 | Electric transportation cabinet with strong impact resistance for security |
| CN113410774B (en) * | 2021-05-19 | 2024-06-07 | 河南巨高嘉业电力设备有限公司 | Explosion-proof power distribution cabinet and method for monitoring operation of power distribution cabinet |
| CN113404416A (en) * | 2021-07-26 | 2021-09-17 | 嘉兴市盛华人防设备有限公司 | Anti-deformation explosion-proof civil air-defense door |
| CN114069412B (en) * | 2022-01-17 | 2022-04-08 | 东营市久诺尔石油设备有限公司 | A intelligent electrical control cabinet for petrochemical |
| CN114828490A (en) * | 2022-05-06 | 2022-07-29 | 常建刚 | Communication base station integrated cabinet energy-saving system |
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| DE112012005011T5 (en) * | 2011-11-29 | 2014-08-28 | Cooper Technologies Co. | Air duct cover for an electrical enclosure |
| CN108518143B (en) * | 2018-03-01 | 2019-11-08 | 国网河南省电力公司商丘供电公司 | A kind of explosion-proof type power distribution cabinet that the security performance based on Internet of Things is high |
| CN208849333U (en) * | 2018-10-30 | 2019-05-10 | 安徽美昂电气有限公司 | A kind of switchgear temperature rise early warning arc light flame proection |
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