CN113314993A - Temperature abnormity alarm device for high-low voltage power distribution cabinet - Google Patents
Temperature abnormity alarm device for high-low voltage power distribution cabinet Download PDFInfo
- Publication number
- CN113314993A CN113314993A CN202110609657.8A CN202110609657A CN113314993A CN 113314993 A CN113314993 A CN 113314993A CN 202110609657 A CN202110609657 A CN 202110609657A CN 113314993 A CN113314993 A CN 113314993A
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- China
- Prior art keywords
- temperature
- back plate
- cabinet body
- low voltage
- power distribution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 43
- 238000005057 refrigeration Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 239000000110 cooling liquid Substances 0.000 claims abstract description 17
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 239000002826 coolant Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 13
- 239000000443 aerosol Substances 0.000 description 9
- 238000009413 insulation Methods 0.000 description 7
- 230000005856 abnormality Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to the technical field of power equipment, in particular to a temperature abnormity alarm device for a high-low voltage power distribution cabinet; the front door is movably connected with the cabinet body and is positioned at one side of the cabinet body, the back plate is fixedly connected with the cabinet body and is positioned at one side of the cabinet body far away from the front door, the plurality of temperature detectors are respectively and fixedly connected with the back plate and are uniformly arranged on the inner side wall of the back plate at intervals, a cooling groove is arranged in the back plate, cooling liquid is arranged in the cooling groove, the plurality of semiconductor refrigeration sheets are respectively and fixedly connected with the back plate and are uniformly arranged at one side of the back plate far away from the temperature detectors at intervals; utilize thermodetector to detect the temperature of the different regions of the cabinet body to send out the police dispatch newspaper when the temperature is unusual, the heat of the cabinet body is absorbed to the coolant liquid, when the temperature is unusual, start the semiconductor refrigeration piece that corresponds the region, dispel the heat with higher speed, prevent that the internal electronic component of cabinet from receiving the damage.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a temperature abnormity alarm device for a high-low voltage power distribution cabinet.
Background
The high-voltage power distribution cabinet is an electrical appliance product which is used for power generation, power transmission, power distribution, electric energy conversion and consumption of an electric power system and plays roles of on-off, control or protection and the like, and has a voltage grade of 3.6-550 kV, and mainly comprises a high-voltage circuit breaker, a high-voltage isolating switch, a grounding switch, a high-voltage load switch, a high-voltage automatic reclosing and sectionalizing device, a high-voltage operating mechanism, a high-voltage explosion-proof power distribution device, a high-voltage switch cabinet and the like. When high voltage distribution cabinet moves, if cabinet body internal equipment appears partial discharge, can arouse the unusual temperature rise of conductor junction, because the position of generating heat is hidden, the operating personnel can't in time discover. Therefore, the fault is easy to be enlarged, so that the electric elements are broken down and burnt and spread to adjacent equipment units, and a vicious power failure accident is caused.
The current temperature abnormity alarm device can only carry out emergency power-off on the cabinet body and remind workers to process when the temperature of the cabinet body is abnormal, but the heat in the cabinet body is hoarded in the cabinet body for a long time, so that internal electronic elements are aged or even damaged.
Disclosure of Invention
The invention aims to provide a temperature abnormity alarm device for a high-low voltage power distribution cabinet, and aims to solve the technical problems that when the temperature of a cabinet body is abnormal, a traditional temperature abnormity alarm device in the prior art can only carry out emergency power-off on the cabinet body and remind workers to process the abnormal temperature alarm device, but heat in the cabinet body is accumulated in the cabinet body for too long time, so that internal electronic elements are aged or even damaged.
In order to achieve the purpose, the invention provides a temperature abnormity alarm device for a high-voltage and low-voltage power distribution cabinet, which comprises a cabinet body, a back plate, a front door, temperature detectors and a cooling assembly, wherein the front door is movably connected with the cabinet body and is positioned at one side of the cabinet body, the back plate is fixedly connected with the cabinet body and is positioned at one side of the cabinet body, which is far away from the front door, the number of the temperature detectors is large, each temperature detector is respectively and fixedly connected with the back plate and is uniformly arranged on the inner side wall of the back plate at intervals, the cooling assembly comprises cooling liquid and semiconductor refrigeration sheets, a cooling groove is arranged inside the back plate, the cooling liquid is arranged in the cooling groove, the number of the semiconductor refrigeration sheets is large, and each semiconductor refrigeration sheet is respectively and fixedly connected with the back plate, the semiconductor refrigeration pieces are evenly arranged on one side, far away from the temperature detector, of the back plate at intervals, the refrigeration ends of the semiconductor refrigeration pieces are located inside the cooling groove, and the heat dissipation ends of the semiconductor refrigeration pieces are located on the outer side wall of the back plate.
The temperature detectors are used for detecting the temperatures of different areas of the cabinet body, an alarm is given out when the temperature is abnormal, the cooling liquid absorbs the heat of the cabinet body, when the temperature is abnormal, the semiconductor refrigeration piece corresponding to the area is started, the heat dissipation of the area is accelerated, and the electronic elements in the cabinet body are prevented from being damaged.
The temperature abnormity alarm device of the high-low voltage power distribution cabinet further comprises a Bluetooth module and a control terminal, wherein each temperature detector is electrically connected with the Bluetooth module, and the Bluetooth module is wirelessly connected with the control terminal.
And the data of the temperature detector is transmitted to the control terminal through the Bluetooth module, the control terminal judges the data, and an alarm is given when the data are abnormal.
The control terminal is provided with a PLC control system and is electrically connected with each semiconductor refrigeration piece.
Automatic control is realized through a PLC control system, and when the temperature is abnormal, the semiconductor refrigerating sheet in the corresponding area works.
The temperature abnormity warning device of the high-low voltage power distribution cabinet further comprises warning lamps, and each warning lamp is fixedly connected with the corresponding semiconductor refrigeration piece and is respectively positioned above the corresponding semiconductor refrigeration piece.
The accessible the warning light judges which regional temperature has unusually, reduces the scope when overhauing.
The cooling assembly further comprises a plurality of fans and fixing frames, the number of the fans and the number of the fixing frames are multiple, each fixing frame is fixedly connected with the back plate and is respectively located on one side of the semiconductor refrigeration piece, and each fan is fixedly connected with the corresponding fixing frame and is respectively located inside the corresponding fixing frame.
The heat dissipation speed of the heat dissipation end of the semiconductor refrigeration piece is improved through the fan.
The cooling assembly further comprises a plurality of air guide pipes, and each air guide pipe is fixedly connected with the corresponding fixing frame and is located on one side of the corresponding fixing frame.
The air guide pipe is arranged on the side face of the fan, so that hot air around the semiconductor refrigeration sheet enters the air guide pipe and is transmitted to the outside, and the indoor temperature rise is slowed down.
According to the temperature abnormity alarm device for the high-low voltage power distribution cabinet, the temperatures of different areas in the cabinet body are detected through the plurality of temperature detectors, the cooling liquid can continuously absorb heat to the interior of the cabinet body until the temperatures of the cooling liquid and the interior of the cabinet body are the same, when the temperature detectors detect that the temperatures are abnormal, an alarm is given out, a circuit in the cabinet body is disconnected, the corresponding semiconductor refrigerating sheets are started, the semiconductor refrigerating sheets cool the cooling liquid in the areas, the cooling liquid continuously absorbs the heat, the temperature of the abnormal areas is reduced, and therefore electronic elements are protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a sectional view of a temperature abnormality alarm device for a high-low voltage power distribution cabinet provided by the invention.
Fig. 2 is an enlarged view of a portion of the structure of fig. 1 a according to the present invention.
Fig. 3 is an enlarged view of a portion of the structure of fig. 1B.
Fig. 4 is a distribution diagram of the semiconductor chilling plate provided by the invention.
Fig. 5 is an operation schematic diagram of the temperature abnormality alarm device for the high-low voltage power distribution cabinet provided by the invention.
1-cabinet body, 11-first through hole, 2-back plate, 21-cooling tank, 3-front door, 4-temperature detector, 5-cooling component, 51-cooling liquid, 52-semiconductor refrigeration piece, 53-fan, 54-fixing frame, 55-air guide pipe, 6-Bluetooth module, 7-control terminal, 8-warning lamp, 9-fire extinguishing component, 91-heat insulation box, 911-box body, 912-heat insulation film, 913-second through hole, 92-aerosol fire extinguisher, 921-fire extinguisher body, 922-valve, 923-cylinder and 924-push rod.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 5, the invention provides a temperature abnormality alarm device for a high-voltage and low-voltage power distribution cabinet, which includes a cabinet body 1, a back plate 2, a front door 3, temperature detectors 4 and cooling assemblies 5, wherein the front door 3 is movably connected with the cabinet body 1 and is located at one side of the cabinet body 1, the back plate 2 is fixedly connected with the cabinet body 1 and is located at one side of the cabinet body 1 away from the front door 3, the number of the temperature detectors 4 is large, each temperature detector 4 is respectively fixedly connected with the back plate 2 and is uniformly arranged at intervals on the inner side wall of the back plate 2, the cooling assemblies 5 include cooling liquid 51 and semiconductor refrigeration sheets 52, a cooling groove 21 is arranged inside the back plate 2, the cooling liquid 51 is arranged in the cooling groove 21, and the number of the semiconductor refrigeration sheets 52 is large, every semiconductor refrigeration piece 52 respectively with backplate 2 fixed connection to the interval evenly set up in backplate 2 keeps away from one side of thermodetector 4, every semiconductor refrigeration piece 52's refrigeration end all is located the inside of cooling bath 21, every semiconductor refrigeration piece 52's heat dissipation end all is located the lateral wall of backplate 2.
In this embodiment, the temperature of different areas in the cabinet body 1 is detected by the plurality of temperature detectors 4, the cooling liquid 51 continuously absorbs heat to the inside of the cabinet body 1 until the cooling liquid 51 and the temperature in the cabinet body 1 are the same, when the temperature detectors 4 detect that the temperature is abnormal, an alarm is given and a circuit in the cabinet body 1 is disconnected, the corresponding semiconductor chilling plates 52 are started, and the semiconductor chilling plates 52 cool the cooling liquid 51 in the area to enable the cooling liquid to continuously absorb heat, so that the temperature of the abnormal area is reduced, and therefore electronic elements are protected.
Furthermore, the temperature abnormity alarm device of the high-low voltage power distribution cabinet further comprises a Bluetooth module 6 and a control terminal 7, each temperature detector 4 is electrically connected with the Bluetooth module 6, and the Bluetooth module 6 is wirelessly connected with the control terminal 7; the control terminal 7 is provided with a PLC control system and is electrically connected with each semiconductor refrigerating sheet 52 respectively; the temperature abnormity warning device for the high-low voltage power distribution cabinet further comprises warning lamps 8, wherein each warning lamp 8 is fixedly connected with the corresponding semiconductor refrigeration piece 52 and is respectively positioned above the corresponding semiconductor refrigeration piece 52.
In this embodiment, the bluetooth module 6 transmits the data of the temperature detector 4 to the control terminal 7, and the control terminal 7 determines the data and gives an alarm when the data is abnormal; the automatic control is realized through a PLC control system, and when the temperature is abnormal, the semiconductor refrigeration sheet 52 in the corresponding area works; the accessible warning light 8 judges which regional temperature has unusually, scope when reducing the maintenance.
Further, the cooling assembly 5 further includes a plurality of fans 53 and a plurality of fixing frames 54, each fixing frame 54 is respectively and fixedly connected to the backplane 2 and respectively located at one side of the semiconductor chilling plate 52, and each fan 53 is respectively and fixedly connected to the corresponding fixing frame 54 and respectively located inside the corresponding fixing frame 54; the cooling assembly 5 further includes a plurality of air guide pipes 55, where the number of the air guide pipes 55 is multiple, and each air guide pipe 55 is respectively and fixedly connected to the corresponding fixing frame 54 and is respectively located at one side of the corresponding fixing frame 54.
In the present embodiment, the fan 53 increases the heat dissipation speed of the heat dissipation end of the semiconductor chilling plate 52; by arranging the air guide pipe 55 on the side surface of the fan 53, hot air around the semiconductor refrigeration sheet 52 enters the air guide pipe 55 and is transmitted to the outside, so that the indoor temperature rise is slowed down, and the heat dissipation of the cabinet body 1 is improved.
Further, high-low voltage distribution cabinet temperature anomaly alarm device still includes fire extinguishing assembly 9, fire extinguishing assembly 9 includes hot box 91 and aerosol fire extinguisher 92, the top setting of the cabinet body 1 is by first through-hole 11, hot box 91 with cabinet body 1 fixed connection, and be located the top of first through-hole 11, aerosol fire extinguisher 92 with hot box 91 fixed connection, and be located hot box 91's inside, and be located the top of first through-hole 11.
In the present embodiment, when an open fire occurs in the cabinet 1, the temperature inside the cabinet 1 is greatly increased, the aerosol fire extinguisher 92 is activated, and the released aerosol absorbs oxygen inside the cabinet 1, thereby extinguishing the open fire inside the cabinet 1.
Further, the heat insulation box 91 comprises a box body 911 and a heat insulation film 912, wherein a second through hole 913 is formed in the bottom of the box body 911, the box body 911 is fixedly connected with the cabinet body 1 and is located above the cabinet body 1, the second through hole 913 is communicated with the first through hole 11, and the heat insulation film 912 is fixedly connected with the box body 911 and is located inside the second through hole 913.
In this embodiment, the box 911 and the thermal insulation film 912 allow the aerosol fire extinguisher 92 to be in a sealed and insulated environment, and when the aerosol fire extinguisher 92 is activated, the pressure generated breaks the thermal insulation film 912, so that the aerosol enters the cabinet 1 through the first through hole 11 and the second through hole 913.
Further, aerosol fire extinguisher 92 includes fire extinguisher body 921, valve 922, cylinder 923 and push rod 924 fire extinguisher body 921 with box 911 fixed connection, and be located the inside of box 911, valve 922 with fire extinguisher body 921 fixed connection, and be located the below of fire extinguisher, cylinder 923 with box 911 fixed connection, and be located the outside of box 911, push rod 924 with cylinder 923 swing joint, and be located the inside of box 911, and be located the side of valve 922.
In this embodiment, after the temperature detector 4 detects an open fire, the cylinder 923 is activated, the cylinder 923 pushes the push rod 924, and the push rod 924 pushes the valve 922, so as to activate the fire extinguisher body 921.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A temperature abnormity alarm device for a high-low voltage power distribution cabinet is characterized in that,
the temperature abnormity warning device for the high-low voltage power distribution cabinet comprises a cabinet body, a back plate, a front door, a plurality of temperature detectors and a cooling assembly, wherein the front door is movably connected with the cabinet body and is positioned on one side of the cabinet body, the back plate is fixedly connected with the cabinet body and is positioned on one side of the cabinet body far away from the front door, the number of the temperature detectors is large, each temperature detector is fixedly connected with the back plate and is uniformly arranged on the inner side wall of the back plate at intervals, the cooling assembly comprises cooling liquid and semiconductor refrigerating pieces, a cooling groove is arranged inside the back plate, the cooling liquid is arranged in the cooling groove, the number of the semiconductor refrigerating pieces is large, each semiconductor refrigerating piece is fixedly connected with the back plate and is uniformly arranged on one side of the back plate far away from the temperature detectors at intervals, and the refrigerating end of each semiconductor refrigerating piece is positioned inside the cooling groove, and the heat dissipation end of each semiconductor refrigeration piece is positioned on the outer side wall of the back plate.
2. The temperature abnormity alarm device of the high-low voltage power distribution cabinet according to claim 1,
the temperature abnormity alarm device for the high-low voltage power distribution cabinet further comprises a Bluetooth module and a control terminal, wherein each temperature detector is electrically connected with the Bluetooth module, and the Bluetooth module is wirelessly connected with the control terminal.
3. The temperature abnormity alarm device of the high-low voltage power distribution cabinet according to claim 2,
the control terminal is provided with a PLC control system and is electrically connected with each semiconductor refrigerating sheet respectively.
4. The temperature abnormity alarm device of the high-low voltage power distribution cabinet according to claim 3,
the temperature abnormity warning device of the high-low voltage power distribution cabinet further comprises warning lamps, and each warning lamp is fixedly connected with the corresponding semiconductor refrigeration piece and is respectively positioned above the corresponding semiconductor refrigeration piece.
5. The temperature abnormity alarm device of the high-low voltage distribution cabinet according to claim 4,
the cooling assembly further comprises a plurality of fans and a plurality of fixing frames, the number of the fans and the number of the fixing frames are multiple, each fixing frame is fixedly connected with the back plate and is respectively located on one side of the semiconductor refrigerating sheet, and each fan is fixedly connected with the corresponding fixing frame and is respectively located inside the corresponding fixing frame.
6. The temperature abnormity alarm device of the high-low voltage power distribution cabinet according to claim 5,
the cooling assembly further comprises a plurality of air guide pipes, and each air guide pipe is fixedly connected with the corresponding fixing frame and is located on one side of the corresponding fixing frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110609657.8A CN113314993A (en) | 2021-06-01 | 2021-06-01 | Temperature abnormity alarm device for high-low voltage power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110609657.8A CN113314993A (en) | 2021-06-01 | 2021-06-01 | Temperature abnormity alarm device for high-low voltage power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113314993A true CN113314993A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110609657.8A Pending CN113314993A (en) | 2021-06-01 | 2021-06-01 | Temperature abnormity alarm device for high-low voltage power distribution cabinet |
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| Country | Link |
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| CN (1) | CN113314993A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204760812U (en) * | 2015-07-03 | 2015-11-11 | 江西省新顿电源科技有限公司 | Intelligent control by temperature change block terminal |
| CN205195092U (en) * | 2015-11-10 | 2016-04-27 | 重庆新世杰电气股份有限公司 | Control panel cabinet |
| CN206922240U (en) * | 2017-07-28 | 2018-01-23 | 滁州继保电气科技有限公司 | A kind of self-extinguishing power distribution cabinet |
| CN207604123U (en) * | 2017-12-15 | 2018-07-10 | 深圳市伟盛丰科技有限公司 | A kind of wireless PLC labels control device |
| CN210328410U (en) * | 2019-07-25 | 2020-04-14 | 南京林业大学 | Gain amplifier's heat radiation structure |
| CN212162555U (en) * | 2020-05-16 | 2020-12-15 | 浙江瓦度电气有限公司 | Automatic cooling power distribution cabinet |
-
2021
- 2021-06-01 CN CN202110609657.8A patent/CN113314993A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204760812U (en) * | 2015-07-03 | 2015-11-11 | 江西省新顿电源科技有限公司 | Intelligent control by temperature change block terminal |
| CN205195092U (en) * | 2015-11-10 | 2016-04-27 | 重庆新世杰电气股份有限公司 | Control panel cabinet |
| CN206922240U (en) * | 2017-07-28 | 2018-01-23 | 滁州继保电气科技有限公司 | A kind of self-extinguishing power distribution cabinet |
| CN207604123U (en) * | 2017-12-15 | 2018-07-10 | 深圳市伟盛丰科技有限公司 | A kind of wireless PLC labels control device |
| CN210328410U (en) * | 2019-07-25 | 2020-04-14 | 南京林业大学 | Gain amplifier's heat radiation structure |
| CN212162555U (en) * | 2020-05-16 | 2020-12-15 | 浙江瓦度电气有限公司 | Automatic cooling power distribution cabinet |
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