CN115764636B - Switch cabinet with insulating shielding structure and shielding method thereof - Google Patents
Switch cabinet with insulating shielding structure and shielding method thereof Download PDFInfo
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- CN115764636B CN115764636B CN202211504534.9A CN202211504534A CN115764636B CN 115764636 B CN115764636 B CN 115764636B CN 202211504534 A CN202211504534 A CN 202211504534A CN 115764636 B CN115764636 B CN 115764636B
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- fixedly connected
- equipment body
- heat dissipation
- connecting block
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention belongs to the technical field of switch cabinets, and discloses a switch cabinet with an insulating shielding structure, which comprises an equipment body; the heat dissipation mechanism is arranged on the outer surfaces of two sides of the equipment body, a containing opening for containing the heat dissipation mechanism is formed in the equipment body, and the inside of the equipment body is communicated with the outside when the heat dissipation mechanism is in a heat dissipation state; the rain shield is fixedly connected with the equipment body and is positioned on the upper surface of the equipment body. The workpiece in the device repeatedly moves up and down, air flow is generated on the upper surface of the second connecting block, external lower air flow enters the device through the upper and lower opening closed rainproof shutter, the air flow with higher internal temperature is lifted upwards and discharged through the opened air outlet, the higher internal temperature is dispersed, the device can be better cooled, and rainwater can be blocked in rainy days.
Description
Technical Field
The invention belongs to the technical field of switch cabinets, and particularly relates to a switch cabinet with an insulating shielding structure and a shielding method thereof.
Background
The switch cabinet is an electrical device, the types and sizes of the switch cabinets on the market are different, but the working effects are consistent, the switch cabinet is used for switching, controlling and protecting electric equipment in the process of generating, transmitting, distributing and converting electric energy in a power system, in the specific use process, elements in the switch cabinet can generate huge heat in the working process, the heat needs to be timely radiated and discharged, the common switch cabinet on the market is often only provided with a plurality of holes on the cabinet body for radiating the heat, but the radiating effect is not ideal, the switch cabinet can be used outdoors, weather factors are objectively existing in the outdoor use condition, the common switch cabinet is not provided with a rainproof structure, rainwater can enter the switch cabinet along with radiating holes when encountering rain, the service life of the switch cabinet is reduced, and inconvenience is brought to people.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a switch cabinet with an insulating shielding structure and a shielding method thereof, wherein workpieces in the switch cabinet repeatedly move up and down, under the condition of the movement, a second connecting block generates air flow on the upper surface of the second connecting block, the air flow with lower outside enters the equipment through a closed rainproof shutter which is started up and down, the air flow with higher inside temperature is lifted upwards, and the air flow with higher inside temperature is discharged through an opened air outlet, so that the conversion of the air flow in the inside is completed, the higher inside temperature is dispersed, the equipment can be better cooled, and the rainwater can be blocked in rainy days.
In order to achieve the above purpose, the present invention provides the following technical solutions: a switch cabinet with an insulating shielding structure comprises an equipment body;
the heat dissipation mechanism is arranged on the outer surfaces of two sides of the equipment body, a containing opening for containing the heat dissipation mechanism is formed in the equipment body, and the inside of the equipment body is communicated with the outside when the heat dissipation mechanism is in a heat dissipation state;
the rain shield is fixedly connected with the equipment body and is positioned on the upper surface of the equipment body;
the air flow generating mechanism is fixedly connected with the equipment body and is positioned in the equipment body.
Preferably, the heat dissipation mechanism comprises a second fixed block, the second fixed block is fixedly connected with the inner side surface of the upper accommodating opening of the equipment body, a fixed plate is fixedly connected with the lower surface of the second fixed block, a rainproof shutter is fixedly connected with the lower surface of the fixed plate, a first connecting block is fixedly connected with the lower surface of the rainproof shutter, sliding blocks are fixedly connected with the outer surfaces of two sides of the first connecting block, the heat dissipation mechanism further comprises a first fixed block, the first fixed block is fixedly connected with the inner side surface of the upper accommodating opening of the equipment body, a sliding groove is formed in the inner side surface of the first fixed block, and the sliding blocks are slidably connected in the sliding groove.
Preferably, the rainproof shutter and the first fixing block move in a telescopic manner, the first connecting block is connected with the first fixing block in a sliding manner through the airflow generating mechanism, the fixing plate is fixedly connected with the first fixing block, and the second fixing block is fixedly connected with the first fixing block.
Preferably, the airflow generating mechanism comprises a second connecting block, the outer surfaces of two sides of the second connecting block are fixedly connected with the inner side surfaces of the first connecting block respectively, the lower surface of the second connecting block is fixedly connected with a connecting rack block, the outer wall of the connecting rack block is connected with a half gear in a meshed manner, the circle center of the half gear is fixedly connected with a transmission gear, the outer wall of the transmission gear is connected with a driving gear in a meshed manner, the circle center of the driving gear is provided with a driving motor, the output end shaft of the driving motor is fixedly connected with the circle center of the driving gear, the number of the half gears and the number of the transmission gears are two, the half gears and the transmission gear are completely equal in structure, and the two transmission gears are respectively connected with the outer wall of the driving gear in a meshed manner.
Preferably, the connecting rack block is fixedly connected with tooth grooves matched with the half gears, wherein one group of half gears are meshed with the connecting rack block, and the other group of half gears are not meshed with the outer wall of the connecting rack block when the half gears are meshed with the connecting rack block.
Preferably, the lower surface of the driving motor is fixedly connected with a containing block, the containing block is fixedly connected with the inside of the equipment body, and a limiting block used for limiting the position of the connecting rack block is fixedly connected to the containing block.
Preferably, the lower surface fixedly connected with dampproofing base of equipment body, the lateral surface of equipment body rotates to be connected with and starts the cabinet door, a plurality of gas outlet has been seted up to the upper surface of equipment body.
Preferably, the structure of the rain shield is arc-shaped, and the rain shield is positioned right above the air outlet.
A shielding method of a switch cabinet with an insulating shielding structure comprises the following shielding steps:
s1: holding the holding rod and opening the cabinet door;
s2: searching electromagnetic shielding equipment, setting a wave value to be shielded, pressing a start key, and operating the electromagnetic shielding equipment;
s3: electromagnetic waves are emitted to interfere with an external magnetic field, and the electromagnetic waves are shielded.
Preferably, the electromagnetic shielding working state is eddy current shielding.
Compared with the prior art, the invention has the following beneficial effects:
when the switch cabinet is subjected to heat dissipation, the driving motor is started, the driving motor drives the driving gear to rotate, the driving gear drives the transmission gear to rotate and drives the half gear to rotate on the connecting rack block, the gear rotates according to the rotating direction of the driving motor, when one group of half gears are contacted, the connecting rack block is driven to rise upwards, the fixed second connecting block and the first connecting block are driven to rise upwards, the first connecting block slides in the sliding groove through the sliding block, the rainproof shutter is contracted, when one group of half gears rotate to leave the connecting rack block, the other group of half gears rotate on the connecting rack block and drive the connecting rack block to move downwards, and the second connecting block, the first connecting block and the rainproof shutter are driven to move downwards, in the case of such movement, the second connecting block generates air flow on the upper surface, the air flow with lower outside enters the equipment through the upper and lower opening closed rainproof shutter, the air flow with higher inside temperature is lifted upwards and discharged through the opened air outlet, thereby completing the conversion of the air flow in the interior, dispersing the air flow with higher inside temperature, the device has the advantages that the device can be better cooled, when raining, people go to control the driving motor to stop rotating, the rainproof shutter is put down to shield elements inside the device body, rainproof is carried out, when raining, the general temperature is lower, the air outlet is used for radiating heat inside, the heat radiation is more efficient, rainwater can be blocked in raining, and corrosion of the rainwater is prevented.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a part of the structure of the present invention;
FIG. 3 is a schematic diagram of a heat dissipating mechanism according to the present invention;
FIG. 4 is an enlarged schematic view of a first fixed block according to the present invention;
FIG. 5 is a schematic view of the internal structure of the present invention;
fig. 6 is a front elevation view of the airflow generating mechanism of the present invention.
In the figure: 1. a rain shield; 2. a heat dissipation mechanism; 3. an equipment body; 4. an air flow generating mechanism; 21. a first fixed block; 22. a chute; 23. a fixing plate; 24. a slide block; 25. a first connection block; 26. a second fixed block; 27. rain-proof shutter; 31. a moisture-proof base; 32. starting a cabinet door; 33. an air outlet; 41. a second connection block; 42. connecting the rack blocks; 43. a half gear; 44. a transmission gear; 45. a drive gear; 46. and driving the motor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, the present invention provides a switchgear having an insulation shielding structure, including an apparatus body 3;
the heat dissipation mechanism 2 is arranged on the outer surfaces of two sides of the equipment body 3, the equipment body 3 is provided with a containing opening for containing the heat dissipation mechanism 2, and the heat dissipation mechanism 2 is communicated with the outside in the equipment body 3 in a heat dissipation state;
the rain shield 1 is fixedly connected with the equipment body 3, and the rain shield 1 is positioned on the upper surface of the equipment body 3;
and the air flow generating mechanism 4 is fixedly connected with the equipment body 3, and the air flow generating mechanism 4 is positioned in the equipment body 3.
Further, the heat dissipation mechanism 2 includes second fixed block 26, the medial surface fixed connection of mouth is received on second fixed block 26 and the equipment body 3, the lower fixed surface of second fixed block 26 is connected with fixed plate 23, the lower fixed surface of fixed plate 23 is connected with rain-proof tripe 27, the lower fixed surface of rain-proof tripe 27 is connected with first connecting block 25, the both sides surface fixedly connected with slider 24 of first connecting block 25, heat dissipation mechanism 2 still includes first fixed block 21, the medial surface fixed connection of mouth is received on first fixed block 21 and the equipment body 3, spout 22 has been seted up to the medial surface of first fixed block 21, slider 24 sliding connection is in spout 22.
Further, the rainproof shutter 27 and the first fixing block 21 are in telescopic movement, the first connecting block 25 is in sliding connection with the first fixing block 21 through the air flow generating mechanism 4, the fixing plate 23 is fixedly connected with the first fixing block 21, and the second fixing block 26 is fixedly connected with the first fixing block 21.
Further, the airflow generating mechanism 4 includes a second connecting block 41, two outer surfaces of the second connecting block 41 are fixedly connected with inner side surfaces of the first connecting block 25 respectively, a connecting rack block 42 is fixedly connected with a lower surface of the second connecting block 41, a half gear 43 is connected with an outer wall of the connecting rack block 42 in a meshed manner, a transmission gear 44 is fixedly connected with a circle center of the half gear 43, a driving gear 45 is connected with an outer wall of the transmission gear 44 in a meshed manner, a driving motor 46 is arranged at the circle center of the driving gear 45, an output end shaft of the driving motor 46 is fixedly connected with the circle center of the driving gear 45, the number of the half gears 43 and the transmission gears 44 is two, the two groups of the half gears 43 and the transmission gears 44 are completely equal in structure, the two groups of the transmission gears 44 are respectively connected with the outer wall of the driving gear 45 in a meshed manner, and the directions of rotation of the transmission gear 44, the driving gear 45 and the driving gear 46 are consistent.
Further, a tooth slot matched with the half gear 43 is fixedly connected to the connecting rack block 42, wherein when one group of half gears 43 are meshed with the connecting rack block 42, the other group of half gears 43 are not meshed with the outer wall of the connecting rack block 42, the lower surface of the driving motor 46 is fixedly connected with a containing block, the containing block is fixedly connected with the inside of the equipment body 3, a limiting block used for limiting the position of the connecting rack block 42 is fixedly connected to the containing block, and the limiting block is sleeved on the outer wall of the connecting rack block 42.
Further, the lower surface fixedly connected with dampproofing base 31 of equipment body 3, the lateral surface of equipment body 3 rotates to be connected with and starts cabinet door 32, and a plurality of gas outlet 33 has been seted up to the upper surface of equipment body 3, and the structure of rain shield 1 is circular-arc, and rain shield 1 is located directly over gas outlet 33.
A shielding method of a switch cabinet with an insulating shielding structure comprises the following shielding steps:
s1: holding the holding rod and opening the cabinet door 32;
s2: searching electromagnetic shielding equipment, setting a wave value to be shielded, pressing a start key, and operating the electromagnetic shielding equipment;
s3: electromagnetic waves are emitted to interfere with an external magnetic field, and the electromagnetic waves are shielded.
Further, the electromagnetic shielding working state is eddy current shielding.
The electromagnetic shielding means that the end part of the stator core of the high-capacity turbogenerator is shielded by a component made of conductive materials or ferromagnetic materials so as to reduce additional loss and local heating caused by magnetic leakage at the end part of a stator winding in a structural member, and the shielding means that metal isolation is carried out between two space regions in the aspect of communication so as to control induction and radiation of an electric field, a magnetic field and electromagnetic waves from one region to the other region, and specifically, a shielding body is used for surrounding an interference source of a component, a circuit, an assembly, a cable or the whole system so as to prevent the outward diffusion of an interference electromagnetic field; the receiving circuit, device or system is surrounded by a shield, which protects them from external electromagnetic fields,
the eddy current shielding is that when an alternating electromagnetic field passes through the surface of a metal material or an eyelet surrounded by the metal material, the metal material can form an eddy current due to induced electromotive force, the magnetic field generated by the eddy current is just opposite to the original magnetic field direction, and part of the original magnetic field is counteracted, so that the eddy current shielding effect is achieved;
the magnetic force lines generated by the coil working current and the magnetic force lines generated by the shielding body induced current are opposite in direction outside the shielding body, and partially offset to play a role in shielding. The magnetic force lines outside the shielding body are part of the magnetic force lines of the coil, and the magnetic force lines of the induced current of the shielding body are less than the magnetic force lines generated by the coil, namely the magnetic force lines outside the shielding body cannot be completely counteracted;
the magnetic force lines generated by working current of the coil are opposite to the magnetic force lines generated by induced current of the shielding body, and the magnetic force lines are denser and the magnetic field is stronger due to the intervention of the shielding body in the area;
inside the coil, the magnetic force lines generated by the coil and the magnetic force lines generated by the induced current of the shielding body are opposite in direction, which means that the shielding body can reduce the magnetic flux passing through the inside of the coil, namely the self-inductance of the coil is reduced.
The working principle and the using flow of the invention are as follows:
when the switch cabinet is subjected to heat radiation, the driving motor 46 is started, the driving motor 46 drives the driving gear 45 to rotate, the driving gear 45 drives the transmission gear 44 to rotate and drives the half gear 43 to drive the connecting gear bar 42 to rotate according to the rotating direction of the driving motor 46, when one group of half gears 43 are contacted, the connecting gear bar 42 is driven to rise upwards and drive the fixed second connecting block 41 to rise upwards with the first connecting block 25, the first connecting block 25 slides in the sliding groove 22 through the sliding block 24 to enable the rainproof shutter 27 to shrink, when one group of half gears 43 rotates out of the connecting gear bar 42, the other group of half gears 43 rotates on the connecting gear bar 42 and drives the connecting gear bar 42 to move downwards, so that the second connecting block 41, the first connecting block 25 and the rainproof shutter 27 are driven to move downwards, in this way, the second connecting block 41 repeatedly moves up and down, in the case of such movement, air flow is generated on the upper surface of the second connecting block, air flow with lower external temperature enters the device through the upper and lower opening closing rainproof shutter 27, air flow with higher internal temperature rises upwards and is discharged through the opened air outlet 33, so that the conversion of the air flow in the device is completed, the higher internal temperature is dispersed, the device can be better radiated, in rainy days, people control the driving motor 46 to stop rotating, the rainproof shutter 27 is put down to shield the elements in the device body 3, rainproof is carried out, in rainy days, the general temperature is lower, the air outlet 33 is used for dispersing internal heat, the radiation is more efficient, and the rainwater can be blocked in rainy days, preventing erosion of rainwater.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Switch cabinet with insulating shielding structure, its characterized in that: comprises an equipment body (3);
the heat dissipation mechanism (2) is arranged on the outer surfaces of two sides of the equipment body (3), a containing opening for containing the heat dissipation mechanism (2) is formed in the equipment body (3), and the heat dissipation mechanism (2) is communicated with the outside in the equipment body (3) in a heat dissipation state;
the rain shield (1), the rain shield (1) is fixedly connected with the equipment body (3), and the rain shield (1) is positioned on the upper surface of the equipment body (3);
the air flow generating mechanism (4), the air flow generating mechanism (4) is fixedly connected with the equipment body (3), the air flow generating mechanism (4) is positioned in the equipment body (3), the heat dissipation mechanism (2) comprises a second fixing block (26), the second fixing block (26) is fixedly connected with the inner side surface of the accommodating opening on the equipment body (3), the lower surface of the second fixing block (26) is fixedly connected with a fixing plate (23), the lower surface of the fixing plate (23) is fixedly connected with a rainproof shutter (27), the lower surface of the rainproof shutter (27) is fixedly connected with a first connecting block (25), the outer surfaces of two sides of the first connecting block (25) are fixedly connected with a sliding block (24), the heat dissipation mechanism (2) further comprises a first fixing block (21), the inner side surface of the first fixing block (21) is fixedly connected with the inner side surface of the accommodating opening on the equipment body (3), a sliding groove (22) is formed in the inner side surface of the second fixing block (26), the sliding block (24) is slidably connected with the sliding groove (22), the first connecting block (21) is fixedly connected with the first connecting block (21), the first connecting block (21) through the sliding shutter (21), the first connecting block (21) and the first connecting block (21) in a sliding mode, the second fixing block (26) is fixedly connected with the first fixing block (21), the air flow generating mechanism (4) comprises a second connecting block (41), the outer surfaces of two sides of the second connecting block (41) are fixedly connected with the inner side surfaces of the first connecting block (25) respectively, the lower surface of the second connecting block (41) is fixedly connected with a connecting rack block (42), the outer wall of the connecting rack block (42) is in meshed connection with a half gear (43), the center of the half gear (43) is fixedly connected with a transmission gear (44), the outer wall of the transmission gear (44) is in meshed connection with a driving gear (45), the center of the driving gear (45) is provided with a driving motor (46), the output end shafts of the driving motor (46) are fixedly connected with the center of the driving gear (45), the number of the half gears (43) and the transmission gears (44) is two groups, the structures of the two groups of the half gears (43) and the transmission gears (44) are completely equal, the two groups of the transmission gears (44) are respectively in meshed connection with the outer wall of the driving gear (45) and the half gears (42) are fixedly connected with the upper tooth grooves (42), one group of half gears (43) is meshed with the connecting rack block (42), and the other group of half gears (43) is not meshed with the outer wall of the connecting rack block (42).
2. A switchgear with insulating shielding structure according to claim 1, characterized in that: the lower surface of the driving motor (46) is fixedly connected with a storage block, the storage block is fixedly connected with the inside of the equipment body (3), and a limiting block used for limiting the position of the connecting tooth bar block (42) is fixedly connected to the storage block.
3. A switchgear with insulating shielding structure according to claim 1, characterized in that:
the device is characterized in that a dampproof base (31) is fixedly connected to the lower surface of the device body (3), a cabinet door (32) is rotatably connected to the outer side face of the device body (3), and a plurality of air outlets (33) are formed in the upper surface of the device body (3).
4. A switchgear with insulating shielding structure according to claim 1, characterized in that: the structure of the rain shield (1) is arc-shaped, and the rain shield (1) is positioned right above the air outlet (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211504534.9A CN115764636B (en) | 2022-11-29 | 2022-11-29 | Switch cabinet with insulating shielding structure and shielding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211504534.9A CN115764636B (en) | 2022-11-29 | 2022-11-29 | Switch cabinet with insulating shielding structure and shielding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115764636A CN115764636A (en) | 2023-03-07 |
| CN115764636B true CN115764636B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211504534.9A Active CN115764636B (en) | 2022-11-29 | 2022-11-29 | Switch cabinet with insulating shielding structure and shielding method thereof |
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| Country | Link |
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| CN (1) | CN115764636B (en) |
Citations (9)
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|---|---|---|---|---|
| JPS5185856A (en) * | 1974-12-17 | 1976-07-27 | Siemens Ag | JURYOHINSHUNOKYABINETSUTO |
| DE3632498A1 (en) * | 1986-09-24 | 1988-03-31 | Bosch Gmbh Robert | Locking device for electrical switching apparatuses in a switching apparatus box, especially for motor vehicles |
| CN205565444U (en) * | 2016-04-18 | 2016-09-07 | 象山逸迪电子科技有限公司 | Outdoor power distribution cabinet |
| CN207476111U (en) * | 2017-11-14 | 2018-06-08 | 山东天大清源信息科技有限公司 | A kind of electromagnetic shielding rack |
| CN112018642A (en) * | 2020-09-03 | 2020-12-01 | 杭州墙镪科技有限公司 | Ventilation and heat dissipation device of high-low voltage power distribution cabinet |
| CN112271563A (en) * | 2020-10-28 | 2021-01-26 | 浙江龙呈电力设备有限公司 | Fireproof switch cabinet |
| CN217215929U (en) * | 2021-12-15 | 2022-08-16 | 信阳平高电气有限公司 | Cable branch box with early warning effect |
| CN115064972A (en) * | 2022-07-14 | 2022-09-16 | 安徽深创晶捷光电有限公司 | Outdoor rainproof heat dissipation type switch cabinet |
| CN217469155U (en) * | 2022-06-14 | 2022-09-20 | 连云港庆硕电力设备有限公司 | Outdoor high-low voltage switch cabinet |
-
2022
- 2022-11-29 CN CN202211504534.9A patent/CN115764636B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5185856A (en) * | 1974-12-17 | 1976-07-27 | Siemens Ag | JURYOHINSHUNOKYABINETSUTO |
| DE3632498A1 (en) * | 1986-09-24 | 1988-03-31 | Bosch Gmbh Robert | Locking device for electrical switching apparatuses in a switching apparatus box, especially for motor vehicles |
| CN205565444U (en) * | 2016-04-18 | 2016-09-07 | 象山逸迪电子科技有限公司 | Outdoor power distribution cabinet |
| CN207476111U (en) * | 2017-11-14 | 2018-06-08 | 山东天大清源信息科技有限公司 | A kind of electromagnetic shielding rack |
| CN112018642A (en) * | 2020-09-03 | 2020-12-01 | 杭州墙镪科技有限公司 | Ventilation and heat dissipation device of high-low voltage power distribution cabinet |
| CN112271563A (en) * | 2020-10-28 | 2021-01-26 | 浙江龙呈电力设备有限公司 | Fireproof switch cabinet |
| CN217215929U (en) * | 2021-12-15 | 2022-08-16 | 信阳平高电气有限公司 | Cable branch box with early warning effect |
| CN217469155U (en) * | 2022-06-14 | 2022-09-20 | 连云港庆硕电力设备有限公司 | Outdoor high-low voltage switch cabinet |
| CN115064972A (en) * | 2022-07-14 | 2022-09-16 | 安徽深创晶捷光电有限公司 | Outdoor rainproof heat dissipation type switch cabinet |
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| CN115764636A (en) | 2023-03-07 |
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