CN113131357B - 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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- CN113131357B CN113131357B CN202110394858.0A CN202110394858A CN113131357B CN 113131357 B CN113131357 B CN 113131357B CN 202110394858 A CN202110394858 A CN 202110394858A CN 113131357 B CN113131357 B CN 113131357B
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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 up and down on the cabinet body, the electric layer and the heat dissipation layer are separated by a partition board, ventilation holes are formed in both sides of the heat dissipation layer, the top of the electric layer and the partition board, and a dust-proof plate with the same size as the top of the electric layer is arranged in the electric layer; the dust-proof box is internally provided with two dust-proof boxes covering the air holes on two sides of the corresponding layer, a filter plate, an air exhaust fan, a cleaning component and a dehumidifying cavity are arranged in the dust-proof boxes, the filter plate is arranged between the air exhaust fan and the air holes, the cleaning component is in contact with the surface of the filter plate, the top of the dust-proof box is provided with a lifting driving device for driving the cleaning component to lift, the bottom of the dust-proof box is provided with an ash falling hole which is completely opposite to the cleaning component, the outer wall of the bottom of the dust-proof 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 mobile driving device which can drive the bottom cover to transversely move; 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
A power switch cabinet is a common power infrastructure, which contains a large number of power components inside; since a large amount of heat is generated inside the power switch cabinet during operation, a heat radiation window must be formed on the side wall of the power switch cabinet.
The existing power switch cabinet has the defects that the existing power switch cabinet is basically in a strip-shaped shutter structure, dust cannot be blocked, and therefore the dust easily enters the power switch cabinet, and damage is caused to internal power components.
And, just dispel the heat through the louvre, the radiating effect is poor.
Disclosure of Invention
The invention aims to provide a high-low voltage switch cabinet based on the Internet of things, which ensures the radiating effect and simultaneously prevents dust, thereby being convenient for cleaning a filter screen.
The invention provides the following technical scheme:
the 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 up and down on the cabinet body, a partition plate is arranged between the electric layer and the heat dissipation layer and is separated by the partition plate, ventilation holes are formed in two sides of the heat dissipation layer, the top of the electric layer and the partition plate, and a dust-proof plate with the same size as the top of the electric layer is arranged inside the electric layer;
the dustproof device comprises a radiating layer, and is characterized in that two dustproof boxes covering air holes on two sides of a corresponding layer are arranged in the radiating layer, a filter plate, an air suction fan, a cleaning component and a dehumidifying cavity are arranged in the dustproof boxes, the filter plate is arranged between the air suction fan and the air holes, the filter plate is arranged in parallel with the air holes, the side surface of the filter plate is connected with the inner wall of the dustproof box, the cleaning component is in contact with the surface of the filter plate, the top of the dustproof box is provided with a lifting driving device for driving 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 mobile driving device capable of driving the bottom cover to transversely move; a drying agent is arranged in the dehumidification cavity, and through holes are formed in the side surface of the dustproof box opposite to the air holes and in 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 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.
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, the scraping plates are arranged below the brushes, and one side of each scraping plate, opposite to the lifting plate, of each brush, and one side, opposite to the lifting plate, of each lifting plate are in contact with corresponding side surfaces 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, the lower part of the side surface of the partition plate opposite to the cover plate, and the side of the bottom of the heat dissipation layer opposite to the cover plate are respectively provided with an L-shaped notch, 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, mounting studs are arranged at two ends of the side surface of the notch opposite to the cover plate, mounting holes matched with the mounting studs are formed in 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.
Preferably, the moving driving device and the lifting driving device are electric push rods, and the moving driving device is fixed on the rear wall of the heat dissipation layer and is connected with one side of the bottom cover opposite to the air holes.
Preferably, a detection assembly is arranged on the inner wall of the electrical layer, 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 air extraction fan and used for controlling the start and stop of the air extraction fan.
Preferably, the dust-proof plate is a gauze plate.
The beneficial effects of the invention are as follows: the invention sets up upper and lower two-layer electric layer and heat-dissipating layer, draw the external cold air of cabinet into the heat-dissipating layer through the air-extracting fan, and blow the cold air into the electric layer through the air vent of the baffle plate through the air-supplying fan, dispel the heat in the electric layer from the air vent at the top of the cabinet, accelerate the heat dissipation and gas circulation in the cabinet; the dust-proof box covered on the air holes is arranged to filter the air pumped by the air suction fan into the heat dissipation layer, so that dust is prevented from entering the cabinet body, and a dust-proof function is realized; meanwhile, a cleaning component is arranged in the dustproof box and 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 disassembling the dustproof box; the dustproof box is also internally provided with a dehumidifying cavity for drying the air pumped into the cabinet body, so that the damage to the electric elements in the cabinet body caused by the humidity of the air outside the cabinet body is avoided.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the clean filter plate of FIG. 2;
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 structure of the cover plate of the present invention;
marked in the figure 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 extraction fan; 8. a bottom cover; 9. a dehumidifying chamber; 10. a lifting driving device; 11. a movement driving device; 12. an ash receiving box; 13. an air supply fan; 14. a detection assembly; 15. a notch; 16. installing a stud; 17. a lifting plate; 18. a brush; 19. a scraper; 20. an ash falling hole; 21. a cover plate; 22. and (5) mounting holes.
Detailed Description
As shown in FIG. 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 and separate through baffle 2 between electric layer and the heat dissipation layer, both sides, the top and the baffle 2 on electric layer of heat dissipation layer all are equipped with the bleeder vent, the circulation of the inside and outside air of the cabinet body 1 of being convenient for.
Inside dust guard 3 that are equipped with rather than top size the same of electrical layer, dust guard 3 are the gauze check otter board, avoid the dust to fall into cabinet body 1 inside from the bleeder vent at its top, because electrical layer top is the heat dissipation bleeder vent, and gaseous inside giving off to cabinet body 1 outside from cabinet body 1, consequently, the air current direction is supreme from down, and the ash probability is less, need not to set up complicated filter mechanism can.
As shown in fig. 1-5, a high-low voltage switch cabinet based on internet of things is provided with two dustproof boxes 4 covering ventilation holes on two sides of a corresponding layer in a radiating layer, a filter plate 5, an air exhaust fan 7, a cleaning component 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 ventilation holes, air sucked into the radiating layer by the ventilation 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 ventilation holes, the side surfaces of the filter plate 5 are connected with the inner wall of the dustproof boxes 4, and the air entering from the ventilation holes is guaranteed to pass through the filter plate 5.
The cleaning component 6 is in contact with the surface of the filter plate 5, a lifting driving device 10 for driving the cleaning component 6 to lift is arranged at the top of the dustproof box 4, an ash falling hole 20 which is completely opposite to the cleaning component 6 is formed in the bottom of the dustproof box 4, a bottom cover 8 which can completely cover the ash falling hole 20 is arranged on the outer wall of the bottom of the dustproof box 4, and a movable driving device 11 which can drive the bottom cover 8 to transversely move is connected to one side of the bottom cover 8 and used for controlling the closing of the bottom cover 8 when the filter plate 5 is cleaned.
Specifically, the quantity of filter 5 is two, and the filtration pore of two filter 5 is along bleeder vent to the direction of air extraction fan 7 is progressively decreased, filters big granule dust earlier, filters the granule dust again, and hierarchical filtration is good, and clean subassembly 6 is located between two filter 5.
As shown in fig. 5, the cleaning component 6 comprises a lifting plate 17, the length of the lifting plate 17 is equal to that of the filter plate 5, scraping plates 19 and brushes 18 are arranged on two opposite sides of the lifting plate 17 and the filter plate 5, the scraping plates 19 are arranged below the brushes 18, one side of each scraping plate 19 opposite to the lifting plate 17, and one side of each brush 18 opposite to the lifting plate 17 are in contact with the corresponding side surface of the filter plate 5, and in the descending process of the cleaning component 6, the scraping plates 19 scrape adhesive dust on the filter plate 5, and meanwhile, the upper dust of the filter plate 5 is swept away through the brushes 18, so that two opposite sides of the filter plates 5 can be cleaned simultaneously.
The desiccant is arranged in the dehumidifying cavity 9, through holes are formed in the side face, opposite to the air holes, of the dustproof box 4 and the cavity wall of the dehumidifying cavity 9, and the fact that gas pumped into the dustproof box 4 from the air suction fan 7 is discharged into the heat dissipation layer from the through holes in the dustproof box 4 after being dried in the dehumidifying cavity 9 is guaranteed.
The bottom of the heat dissipation layer is provided with the ash receiving box 12 opposite to the ash falling hole 20 and the air supply fan 13 opposite to the air holes of the partition plate 2, the ash receiving box 12 receives dust scraped by the cleaning assembly 6, the air supply fan 13 blows cold air pumped into the heat dissipation layer by the air suction fan 7 to the partition plate 2, so that the cold air is discharged into the electric layer from the air holes of the partition plate 2, hot air in the electric layer is extruded from the air holes at the top of the electric layer, air circulation inside the whole switch cabinet is accelerated, and the heat dissipation effect is good.
As shown in fig. 1 and fig. 6, in the high-low voltage switch cabinet based on the internet of things, the electric layer and the heat dissipation layer are correspondingly provided with the cabinet door and the cover plate 21, the cover plate 21 is detachably connected with the heat dissipation layer, and when the dustproof box 4 is taken or the heat dissipation layer is overhauled, only the cover plate 21 is required to be detached, so that the influence of dust on the electric layer can be reduced as much as possible.
Specifically, the lower part of the side surface of the partition plate 2 opposite to the cover plate 21 and the side of the bottom of the heat dissipation layer opposite to the cover plate 21 are respectively provided with an L-shaped notch 15, the two notches 15 are respectively matched with the top of the cover plate 21 and the top, 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 surface 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 locked by nuts matched with the mounting studs 16, so that the mounting and positioning are facilitated, and the cover plate 21 is convenient to assemble and disassemble.
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 is connected with one side of the bottom cover 8 opposite to the air holes.
As shown in fig. 1, a detection component 14 is disposed on an inner wall of the electrical layer, and the detection component 14 includes a temperature and humidity sensor and a wireless transmission module that are connected with each other.
The wireless transmission module is connected with a terminal computer, the terminal computer is connected with the air extraction fan 7 and used for controlling the start and stop of the air extraction fan 7, when the internal temperature of the switch cabinet body 1 is lower than a set threshold value, the air extraction fan 7 is controlled to be closed, when the internal temperature of the cabinet body 1 is higher than the set threshold value, the air extraction fan 7 is controlled to be started, heat dissipation is accelerated, and energy is saved through computer control.
As shown in fig. 1-5, in the high-low voltage switch cabinet based on the internet of things, when the high-low voltage switch cabinet is used, the detection component 14 detects the temperature inside the cabinet body 1, when the temperature is higher than a set threshold value, the air suction fan 7 is controlled to be started, cold air outside the solid enters the heat dissipation layer from the air holes on two sides of the heat dissipation layer, is filtered by the filter plate 5, is dried by the dehumidification cavity 9, is discharged to the middle part of the heat dissipation layer from the through holes of the dustproof box 4, is blown into the electric layer upwards along the air holes of the partition plate 2 by the air supply fan 13, extrudes hot air in the electric layer from the air holes on the top of the electric layer, accelerates the air circulation inside the whole switch cabinet, and has a good heat dissipation effect.
Setting regular cleaning time of the filter plate 5, when the filter plate 5 is cleaned, firstly closing the operation of the air suction fan 7 and the air supply fan 13, shrinking through the moving driving device 11 to drive the bottom cover 8 to move away, enabling the ash dropping hole 20 to be opposite to the ash receiving box 12, at the moment, driving the lifting plate 17 to descend through the lifting driving device 10, enabling the scraping plate 19 to scrape off adhered dust on the filter plate 5, sweeping dust on the filter plate 5 through the brush 18, enabling the ash receiving box 12 to receive the dust scraped off by the cleaning assembly 6, realizing cleaning of the two filter plates 5, and observing the cleaning process of the ash receiving box 12 and the cleaning assembly 6 through arranging a transparent window (not shown in the figure), when the ash receiving box 12 is full, taking the cover plate 21 out, taking the ash receiving box 12 out, dropping the internal dust, then placing the dust under the ash dropping hole 20, then installing the cover plate 21, and starting the air suction fan 7 and the air supply fan 13 to restore normal heat dissipation operation of the cabinet 1.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The 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 up and down on the cabinet body, a partition plate is arranged between the electric layer and the heat dissipation layer and is separated by the partition plate, ventilation holes are formed in two sides of the heat dissipation layer, the top of the electric layer and the partition plate, and a dust-proof plate with the same size as the top of the electric layer is arranged inside the electric layer;
the dustproof device comprises a radiating layer, and is characterized in that two dustproof boxes covering air holes on two sides of a corresponding layer are arranged in the radiating layer, a filter plate, an air suction fan, a cleaning component and a dehumidifying cavity are arranged in the dustproof boxes, the filter plate is arranged between the air suction fan and the air holes, the filter plate is arranged in parallel with the air holes, the side surface of the filter plate is connected with the inner wall of the dustproof box, the cleaning component is in contact with the surface of the filter plate, the top of the dustproof box is provided with a lifting driving device for driving 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 mobile driving device capable of driving the bottom cover to transversely move; a drying agent is arranged in the dehumidification cavity, and through holes are formed in the side surface of the dustproof box opposite to the air holes and in 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;
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, the scraping plates are arranged below the brushes, and one side of each scraping plate, opposite to the lifting plate, of each brush is contacted with the corresponding side face of the filter plate.
2. The high-low voltage switch cabinet based on the internet of things 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 high-low voltage switch cabinet based on the internet of things according to claim 1, wherein a cabinet door and a cover plate are arranged on the electric layer and the heat dissipation layer correspondingly, and the cover plate is detachably connected with the heat dissipation layer.
4. The high-low voltage switch cabinet based on the internet of things according to claim 3, wherein L-shaped notches are formed in the lower portion of the side face, opposite to the cover plate, of the partition plate, and in the side, 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.
5. The high-low voltage switch cabinet based on the Internet of things according to claim 4, wherein mounting studs are arranged at two ends of the side surface, opposite to the cover plate, of the notch, mounting holes matched with the mounting studs are formed in the cover plate, and the cover plate is inserted into the mounting studs through the mounting holes and locked through nuts matched with the mounting studs.
6. The high-low voltage switch cabinet based on the internet of things according to claim 1, wherein the movable driving device and the lifting driving device are both electric push rods, and the movable driving device is fixed on the rear wall of the heat dissipation layer and is connected with one side of the bottom cover opposite to the air holes.
7. The high-low voltage switch cabinet based on the internet of things according to claim 1, wherein a detection assembly is arranged on the inner wall of the electrical layer, and the detection assembly comprises a temperature and humidity sensor and a wireless transmission module which are connected with each other.
8. The high-low voltage switch cabinet based on the internet of things according to claim 7, wherein the wireless transmission module is connected with a terminal computer, and the terminal computer is connected with the air extraction fan and used for controlling the start and stop of the air extraction fan.
9. The high-low voltage switch cabinet based on the internet of things according to claim 1, wherein the dust-proof plate is a grid 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 |
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| Publication Number | Publication Date |
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| CN113131357A CN113131357A (en) | 2021-07-16 |
| CN113131357B true CN113131357B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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| 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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| CN113131357A (en) | 2021-07-16 |
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