CN113131357A - High-low voltage switch cabinet based on Internet of things - Google Patents
High-low voltage switch cabinet based on Internet of things Download PDFInfo
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- CN113131357A CN113131357A CN202110394858.0A CN202110394858A CN113131357A CN 113131357 A CN113131357 A CN 113131357A CN 202110394858 A CN202110394858 A CN 202110394858A CN 113131357 A CN113131357 A CN 113131357A
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- plate
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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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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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)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a high-low voltage switch cabinet based on the Internet of things, which comprises a cabinet body, wherein an electric layer and a heat dissipation layer are arranged on the upper part and the lower part of the cabinet body, the electric layer and the heat dissipation layer are separated by a partition plate, air holes are formed in the two sides of the heat dissipation layer and the top of the electric layer and the partition plate, and a dust guard plate with the same size as the top of the electric layer is arranged in the electric layer; the dustproof box is internally provided with two dustproof boxes which are covered with air holes on two sides of the corresponding layer, a filter plate, an air exhaust fan, a cleaning component and a dehumidification cavity are arranged in the dustproof box, the filter plate is arranged between the air exhaust fan and the air holes, the cleaning component is in surface contact with the filter plate, the top of the dustproof box is provided with a lifting driving device which drives the cleaning component to lift, the bottom of the dustproof box is provided with an ash falling hole which is completely opposite to the cleaning component, the outer wall of the bottom of the dustproof box is provided with a bottom cover which can completely cover the ash falling hole, and one side of the bottom cover is connected with a movement driving device which can drive the bottom; the bottom of the heat dissipation layer is provided with an ash receiving box and an air supply fan.
Description
Technical Field
The invention relates to the technical field of switch cabinets, in particular to a high-low voltage switch cabinet based on the Internet of things.
Background
The power switch cabinet is a common power infrastructure, and a large number of power components are arranged in the power switch cabinet; because the inside will produce a large amount of heats when power switch cabinet is worked, consequently, must set up the radiator window on power switch cabinet's the lateral wall.
The basic structure of the existing power switch cabinet is a strip-shaped shutter structure which cannot block dust, so that the dust can easily enter the power switch cabinet, and internal power components are damaged.
Moreover, heat dissipation is performed only through the heat dissipation holes, and the heat dissipation effect is poor.
Disclosure of Invention
The invention aims to provide a high-low voltage switch cabinet based on the Internet of things, which guarantees the heat dissipation effect and is dustproof and convenient for cleaning a filter screen.
The invention provides the following technical scheme:
a high-low voltage switch cabinet based on the Internet of things comprises a cabinet body, wherein an electric layer and a heat dissipation layer are arranged on the upper portion and the lower portion of the cabinet body, a partition plate is arranged between the electric layer and the heat dissipation layer and is separated by the partition plate, air holes are formed in the two sides of the heat dissipation layer, the top of the electric layer and the partition plate, and a dustproof plate with the same size as the top of the electric layer is arranged in the electric layer;
the heat dissipation layer is internally provided with two dustproof boxes which are covered with air holes on two sides of the corresponding layer, a filter plate, an air exhaust fan, a cleaning component and a dehumidification cavity are arranged in each dustproof box, the filter plate is arranged between the air exhaust fan and the air holes, the filter plate is arranged in parallel with the air holes, the side face of the filter plate is connected with the inner wall of each dustproof box, the cleaning component is in contact with the surface of the filter plate, the top of each dustproof box is provided with a lifting driving device which drives the cleaning component to lift, the bottom of each dustproof box is provided with an ash falling hole which is completely opposite to the cleaning component, the outer wall of the bottom of each dustproof box is provided with a bottom cover which can completely cover the ash falling hole, and one side of the bottom cover is connected with a moving driving device which can drive the bottom cover; a drying agent is arranged in the dehumidification cavity, and through holes are formed in the side face, opposite to the air hole, of the dust-proof box and the cavity wall of the dehumidification cavity;
the bottom of the heat dissipation layer is provided with an ash receiving box opposite to the ash falling hole and an air supply fan opposite to the air holes of the partition plate.
Preferably, the number of filter is two, two the filtration pore of filter is along the bleeder vent extremely the direction of aspirating fan decreases progressively, clean subassembly is located two between the filter.
Preferably, the cleaning assembly comprises a lifting plate, the length of the lifting plate is equal to that of the filter plate, scraping plates and brushes are arranged on two opposite sides of the lifting plate and the filter plate respectively, the scraping plates are arranged below the brushes, and one side, back to back, of each of the scraping plates and the lifting plate and one side, back to back, of each of the brushes and the lifting plate are in contact with the corresponding side face of the filter plate.
Preferably, the electric layer and the heat dissipation layer are correspondingly provided with a cabinet door and a cover plate, and the cover plate is detachably connected with the heat dissipation layer.
Preferably, L-shaped notches are formed in the lower portion of the side face, opposite to the cover plate, of the partition plate and the side face, opposite to the cover plate, of the bottom of the heat dissipation layer, the two notches are respectively matched with the top of the cover plate and the top of the cover plate, and the vertical distance between the notches is equal to the height value of the cover plate.
Preferably, the two ends of the side face, opposite to the cover plate, of the notch are provided with mounting studs, the cover plate is provided with mounting holes matched with the mounting studs, and the cover plate is inserted in the mounting studs through the mounting holes and locked through nuts matched with the mounting studs.
Preferably, the mobile driving device and the lifting driving device are both electric push rods, and the mobile driving device is fixed on the rear wall of the heat dissipation layer and connected with one side of the bottom cover, which is back to the air holes.
Preferably, the inner wall of the electric layer is provided with a detection assembly, and the detection assembly comprises a temperature and humidity sensor and a wireless transmission module which are connected with each other.
Preferably, the wireless transmission module is connected with a terminal computer, and the terminal computer is connected with the exhaust fan and is used for controlling the starting and stopping of the exhaust fan.
Preferably, the dust guard is a yarn grid plate.
The invention has the beneficial effects that: the invention is provided with an upper electric layer and a lower electric layer and a heat dissipation layer, cold air outside the cabinet body is pumped into the heat dissipation layer through the air pumping fan, the cold air is blown into the electric layer through the air holes of the partition plate through the air supply fan, heat in the electric layer is dissipated from the air holes at the top of the cabinet body, and the heat dissipation and the air circulation inside the cabinet body are accelerated; the dustproof box is covered on the air holes, so that gas pumped into the heat dissipation layer by the exhaust fan is filtered, dust is prevented from entering the cabinet body, and a dustproof function is realized; meanwhile, the dust-proof box is internally provided with a cleaning component which is used for sweeping dust on the filter plate from the dust falling hole to the dust receiving box from top to bottom, so that the filter plate is cleaned without dismounting the dust-proof box; still be equipped with the dehumidification chamber in the dustproof box for carry out the drying to the air of taking out to the internal portion of cabinet, avoid cabinet body outside air humidity to cause the damage to the internal portion electrical component of cabinet.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the FIG. 2 clean filter plate;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is a top view of the dust box of the present invention;
FIG. 6 is a schematic view of the construction of the cover plate of the present invention;
labeled as: 1. a cabinet body; 2. a partition plate; 3. a dust-proof plate; 4. a dust-proof box; 5. a filter plate; 6. a cleaning assembly; 7. an air extracting fan; 8. a bottom cover; 9. a dehumidification chamber; 10. a lift drive; 11. a movement driving device; 12. an ash receiving box; 13. an air supply fan; 14. a detection component; 15. a notch; 16. mounting a stud; 17. a lifting plate; 18. a brush; 19. a squeegee; 20. ash falling holes; 21. a cover plate; 22. and (7) installing holes.
Detailed Description
As shown in figure 1, a high-low voltage switch cabinet based on thing networking, including the cabinet body 1, be provided with electric layer and heat dissipation layer about the cabinet body 1, be equipped with baffle 2 between electric layer and the heat dissipation layer and separate through baffle 2, all be equipped with the bleeder vent on the both sides on heat dissipation layer, the top on electric layer and the baffle 2, the circulation of the inside and outside air of the cabinet body 1 of being convenient for.
The inside dust guard 3 that is equipped with rather than the top size of electric layer, dust guard 3 are the screen grid board, avoid the dust to fall into the cabinet body 1 inside from the bleeder vent at its top, because the electric layer top is the heat dissipation bleeder vent, and gas distributes to the cabinet body 1 outside from the cabinet body 1 inside, consequently, supreme is followed to the air current direction, and the ash probability that falls is less, need not to set up complicated filter mechanism can.
As shown in figures 1-5, the high-low voltage switch cabinet based on the Internet of things is characterized in that two dustproof boxes 4 which cover air holes on two sides of a corresponding layer are arranged in a heat dissipation layer, a filter plate 5, an air exhaust fan 7, a cleaning assembly 6 and a dehumidifying cavity 9 are arranged in each dustproof box 4, the filter plate 5 is arranged between the air exhaust fan 7 and the air holes, air sucked into the heat dissipation layer through the air holes is filtered, dust is prevented from falling onto fan blades to affect the work of the air exhaust fan 7, the filter plate 5 is arranged in parallel with the air holes, the side face of the filter plate is connected with the inner wall of the dustproof box 4, and the fact that the air entering from the air holes passes through.
The surface contact of clean subassembly 6 and filter 5, the top of dust-proof box 4 is equipped with the lift drive 10 that the clean subassembly 6 of drive goes up and down, the bottom of dust-proof box 4 is equipped with the dust falling hole 20 just right with clean subassembly 6 completely, the bottom outer wall of dust-proof box 4 is equipped with the bottom 8 that can cover dust falling hole 20 completely, one side of bottom 8 is connected with the removal drive arrangement 11 that can drive bottom 8 lateral shifting for control bottom 8's closure when clean filter 5.
Specifically, the quantity of filter 5 is two, and the filtration pore of two filters 5 is steadilyd decrease along bleeder vent to the direction of bleeding 7, filters the large granule dust earlier, filters the tiny particle dust again, and hierarchical filtration, dustproof effectual, clean subassembly 6 locates between two filters 5.
As shown in fig. 5, the cleaning assembly 6 comprises a lifting plate 17, the length of the lifting plate 17 is equal to that of the filter plate 5, both sides of the lifting plate 17 opposite to the filter plate 5 are provided with a scraper 19 and a brush 18, the scraper 19 is arranged below the brush 18, one side of the scraper 19 opposite to the lifting plate 17, one side of the brush 18 opposite to the lifting plate 17 is in contact with the corresponding side of the filter plate 5, the cleaning assembly 6 is in the descending process, the scraper 19 scrapes adhered dust on the filter plate 5, and the dust on the filter plate 5 is swept away through the brush 18, so that the opposite sides of the two filter plates 5 can be cleaned simultaneously.
The desiccant is arranged in the dehumidification cavity 9, through holes are formed in the side face, opposite to the air holes, of the dust-proof box 4 and the cavity wall of the dehumidification cavity 9, and it is guaranteed that gas pumped into the dust-proof box 4 from the suction fan 7 is dried through the dehumidification cavity 9 and then discharged into the heat dissipation layer from the through holes in the dust-proof box 4.
The bottom on heat dissipation layer is equipped with the ash receiving box 12 just right with ash falling hole 20 and the fan 13 of supplying air just right with the bleeder vent of baffle 2, the dust that ash receiving box 12 scraped clean subassembly 6 accepts, fan 13 of supplying air blows the cold air that the fan 7 of extracting air took into in the heat dissipation layer to baffle 2 for cold air is discharged into the electric layer from the bleeder vent of baffle 2, and extrude the hot-air in the electric layer from the bleeder vent at electric layer top, the inside circulation of air of whole cubical switchboard accelerates, and the radiating effect is good.
As shown in figures 1 and 6, the electric layer and the heat dissipation layer of the high-low voltage switch cabinet based on the Internet of things are correspondingly provided with a cabinet door and a cover plate 21, the cover plate 21 is detachably connected with the heat dissipation layer, when the dustproof box 4 is taken or the heat dissipation layer is overhauled, only the cover plate 21 needs to be detached, and the influence of dust on the electric layer can be reduced as much as possible.
Specifically, the lower part of the side face of the partition board 2 opposite to the cover plate 21 and one side of the bottom of the heat dissipation layer opposite to the cover plate 21 are both provided with an L-shaped notch 15, the two notches 15 are respectively matched with the top part and the top part of the cover plate 21, and the vertical distance between the notches 15 is equal to the height value of the cover plate 21.
The two ends of the side face of the notch 15 opposite to the cover plate 21 are provided with mounting studs 16, the cover plate 21 is provided with mounting holes 22 matched with the mounting studs 16, the cover plate 21 is inserted on the mounting studs 16 through the mounting holes 22 and is locked through nuts matched with the mounting studs 16, so that the mounting and positioning are facilitated, and the cover plate 21 is convenient to mount and dismount.
As shown in fig. 1, the moving driving device 11 and the lifting driving device 10 are both electric push rods, and the moving driving device 11 is fixed on the rear wall of the heat dissipation layer and connected with one side of the bottom cover 8 opposite to the air holes.
As shown in fig. 1, a detection assembly 14 is disposed on an inner wall of the electric layer, and the detection assembly 14 includes a temperature and humidity sensor and a wireless transmission module that are connected to each other.
Wireless transmission module connection terminal computer, terminal computer connection air exhaust fan 7 for the opening of control air exhaust fan 7 stops, when the internal temperature of the switch cabinet body 1 is less than the settlement threshold value, control air exhaust fan 7 closes, when the internal temperature of the cabinet body 1 is higher than the settlement threshold value, control air exhaust fan 7 starts, dispels the heat with higher speed, through computer control, the energy can be saved.
As shown in figures 1-5, a high-low voltage switch cabinet based on thing networking, when using, the detection subassembly 14 detects the temperature of the internal portion of cabinet 1, when the temperature is higher than the threshold value that realizes setting for, control extraction fan 7 starts, the outside cold air of solid gets into the heat dissipation layer from the bleeder vent of heat dissipation layer both sides, filter 5 through the filter, dehumidification chamber 9 is dry after, arrange to the heat dissipation layer middle part from the through-hole of dust-proof box 4, and by the air supply fan 13 upwards blow into the electric layer along the bleeder vent of baffle 2 in, and extrude the hot-air in the electric layer from the bleeder vent at electric layer top, accelerate the inside circulation of air of whole cubical switchboard, the radiating effect is good.
Setting the regular cleaning time of the filter plate 5, firstly closing the work of the air exhaust fan 7 and the air supply fan 13 when cleaning the filter plate 5, the bottom cover 8 is driven to move away by moving the driving device 11 to shrink, so that the ash falling hole 20 is opposite to the ash receiving box 12, at the moment, the lifting plate 17 is driven to descend by the lifting driving device 10, so that the scraping plate 19 scrapes off the adhered dust on the filter plate 5, meanwhile, the dust on the filter plates 5 is swept away by the brush 18, the dust collecting box 12 collects the dust scraped by the cleaning assembly 6, the two filter plates 5 can be cleaned, a transparent window (not shown in the figure) is arranged on the cover plate 21, the cleaning process of the ash receiving box 12 and the cleaning assembly 6 is observed, when the ash receiving box 12 is full, the cover plate 21 is taken down, the dust receiving box 12 is taken out, the dust in the dust receiving box is poured out, the dust is placed under the dust falling hole 20, then, the upper cover plate 21 is installed, and the normal heat dissipation work of the cabinet body 1 can be recovered by starting the air exhaust fan 7 and the air supply fan 13.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-low voltage switch cabinet based on the Internet of things is characterized by comprising a cabinet body, wherein an electric layer and a heat dissipation layer are arranged on the upper portion and the lower portion of the cabinet body, a partition plate is arranged between the electric layer and the heat dissipation layer and is separated by the partition plate, air holes are formed in the two sides of the heat dissipation layer, the top of the electric layer and the partition plate, and a dustproof plate with the same size as the top of the electric layer is arranged in the electric layer;
the heat dissipation layer is internally provided with two dustproof boxes which are covered with air holes on two sides of the corresponding layer, a filter plate, an air exhaust fan, a cleaning component and a dehumidification cavity are arranged in each dustproof box, the filter plate is arranged between the air exhaust fan and the air holes, the filter plate is arranged in parallel with the air holes, the side face of the filter plate is connected with the inner wall of each dustproof box, the cleaning component is in contact with the surface of the filter plate, the top of each dustproof box is provided with a lifting driving device which drives the cleaning component to lift, the bottom of each dustproof box is provided with an ash falling hole which is completely opposite to the cleaning component, the outer wall of the bottom of each dustproof box is provided with a bottom cover which can completely cover the ash falling hole, and one side of the bottom cover is connected with a moving driving device which can drive the bottom cover; a drying agent is arranged in the dehumidification cavity, and through holes are formed in the side face, opposite to the air hole, of the dust-proof box and the cavity wall of the dehumidification cavity;
the bottom of the heat dissipation layer is provided with an ash receiving box opposite to the ash falling hole and an air supply fan opposite to the air holes of the partition plate.
2. The Internet of things-based high-low voltage switch cabinet according to claim 1, wherein the number of the filter plates is two, the filter holes of the two filter plates are gradually decreased along the direction from the air holes to the air suction fan, and the cleaning assembly is arranged between the two filter plates.
3. The Internet of things-based high-voltage and low-voltage switch cabinet according to claim 2, wherein the cleaning assembly comprises a lifting plate, the length of the lifting plate is equal to that of the filter plate, two sides of the lifting plate opposite to the filter plate are provided with a scraper and a hairbrush, the scraper is arranged below the hairbrush, and one side of the scraper opposite to the lifting plate and one side of the hairbrush opposite to the lifting plate are in contact with the corresponding side of the filter plate.
4. The high-low voltage switch cabinet based on the Internet of things is characterized in that the electric layer and the heat dissipation layer are correspondingly provided with a cabinet door and a cover plate, and the cover plate is detachably connected with the heat dissipation layer.
5. The Internet of things-based high-low voltage switch cabinet according to claim 4, wherein L-shaped notches are formed in the lower portion of the side face, opposite to the cover plate, of the partition plate, and the side, opposite to the cover plate, of the bottom of the heat dissipation layer, the two notches are respectively matched with the top portion and the top portion of the cover plate, and the vertical distance between the notches is equal to the height value of the cover plate.
6. The high-low voltage switch cabinet based on the internet of things as claimed in claim 5, wherein mounting studs are disposed at two ends of the side surface of the gap opposite to the cover plate, mounting holes matched with the mounting studs are disposed on the cover plate, and the cover plate is inserted into the mounting studs through the mounting holes and locked by nuts matched with the mounting studs.
7. The Internet of things-based high-voltage and low-voltage switch cabinet according to claim 1, wherein the mobile driving device and the lifting driving device are both electric push rods, and the mobile driving device is fixed on the rear wall of the heat dissipation layer and connected with one side, opposite to the air holes, of the bottom cover.
8. The high-low voltage switch cabinet based on the Internet of things is characterized in that a detection assembly is arranged on the inner wall of the electric layer, and the detection assembly comprises a temperature and humidity sensor and a wireless transmission module which are connected with each other.
9. The high-low voltage switch cabinet based on the internet of things as claimed in claim 8, wherein the wireless transmission module is connected with a terminal computer, and the terminal computer is connected with the exhaust fan and is used for controlling the start and stop of the exhaust fan.
10. The Internet of things-based high-low voltage switch cabinet according to claim 1, wherein the dust-proof plate is a screen mesh plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110394858.0A CN113131357B (en) | 2021-04-13 | 2021-04-13 | High-low voltage switch cabinet based on internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110394858.0A CN113131357B (en) | 2021-04-13 | 2021-04-13 | High-low voltage switch cabinet based on internet of things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113131357A true CN113131357A (en) | 2021-07-16 |
| CN113131357B CN113131357B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110394858.0A Active CN113131357B (en) | 2021-04-13 | 2021-04-13 | High-low voltage switch cabinet based on internet of things |
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| Country | Link |
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| CN (1) | CN113131357B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193392A (en) * | 2018-11-07 | 2019-01-11 | 李星瑶 | A kind of electric power cabinet with automatic dedusting function |
| CN210111353U (en) * | 2019-07-22 | 2020-02-21 | 湖南国丰电力设备有限公司 | Low-voltage distribution cabinet with dampproofing dust removal function |
| CN210537149U (en) * | 2019-12-20 | 2020-05-15 | 广东酷啦啦网络科技有限公司 | Computer cabinet box for technical development |
| CN210628773U (en) * | 2019-11-12 | 2020-05-26 | 源洲电气有限公司 | High-voltage integrated switch cabinet with high safety performance |
| CN211958261U (en) * | 2020-05-17 | 2020-11-17 | 代松 | Subway traction power supply device |
| CN216720577U (en) * | 2021-12-13 | 2022-06-10 | 新乡市太行金日电力设备有限公司 | Intelligence high frequency switch non-maintaining direct current cabinet with heat dissipation dust removal function |
-
2021
- 2021-04-13 CN CN202110394858.0A patent/CN113131357B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193392A (en) * | 2018-11-07 | 2019-01-11 | 李星瑶 | A kind of electric power cabinet with automatic dedusting function |
| CN210111353U (en) * | 2019-07-22 | 2020-02-21 | 湖南国丰电力设备有限公司 | Low-voltage distribution cabinet with dampproofing dust removal function |
| CN210628773U (en) * | 2019-11-12 | 2020-05-26 | 源洲电气有限公司 | High-voltage integrated switch cabinet with high safety performance |
| CN210537149U (en) * | 2019-12-20 | 2020-05-15 | 广东酷啦啦网络科技有限公司 | Computer cabinet box for technical development |
| CN211958261U (en) * | 2020-05-17 | 2020-11-17 | 代松 | Subway traction power supply device |
| CN216720577U (en) * | 2021-12-13 | 2022-06-10 | 新乡市太行金日电力设备有限公司 | Intelligence high frequency switch non-maintaining direct current cabinet with heat dissipation dust removal function |
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| Publication number | Publication date |
|---|---|
| CN113131357B (en) | 2023-07-14 |
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