CN117039695A - Switch cabinet with deformation monitoring and automatic control functions - Google Patents
Switch cabinet with deformation monitoring and automatic control functions Download PDFInfo
- Publication number
- CN117039695A CN117039695A CN202311248190.4A CN202311248190A CN117039695A CN 117039695 A CN117039695 A CN 117039695A CN 202311248190 A CN202311248190 A CN 202311248190A CN 117039695 A CN117039695 A CN 117039695A
- Authority
- CN
- China
- Prior art keywords
- cabinet body
- cabinet
- radiating fins
- alternating current
- plate
- 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.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 230000005855 radiation Effects 0.000 claims description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 abstract description 30
- 230000001681 protective effect Effects 0.000 description 36
- 238000001816 cooling Methods 0.000 description 17
- 230000017525 heat dissipation Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T19/00—Devices providing for corona discharge
- H01T19/04—Devices providing for corona discharge having pointed electrodes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a switch cabinet with deformation monitoring and automatic control functions, which relates to the technical field of switch cabinets and comprises a cabinet body, wherein radiating fins are arranged above the cabinet body, the radiating fins penetrate through the cabinet body, a main body is arranged on one side of the interior of the cabinet body, the main body is positioned below the radiating fins, an arc striking net is arranged in the middle of the cabinet body, a plurality of metal tips are arranged on the arc striking net, the arc striking net is detachably connected with the cabinet body, the positions of the arc striking net and the main body correspond to each other, a piston plate and a control rod are arranged above the interior of the cabinet body, and the piston plate is movably connected with the cabinet body through the control rod. According to the invention, the metal tip actively attracts the electric arc, so that the generated electric arc is mutually perpendicular to the radiating fins in the cabinet body from the overlook angle, then the gas density is changed, the movement of the gas flow is controlled, the electric arc is cut, and the electric arc is accelerated to quickly disappear.
Description
Technical Field
The invention relates to the technical field of switch cabinets, in particular to a switch cabinet with deformation monitoring and automatic control functions.
Background
The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of generating, transmitting, distributing and converting electric energy of the electric power system. The components in the switch cabinet mainly comprise a breaker, a disconnecting switch, a load switch, an operating mechanism, a transformer, various protection devices and the like. The switch cabinets are classified into a movable switch cabinet and a fixed switch cabinet according to the installation mode of the circuit breaker; or according to the different cabinet structures, the switch cabinet can be divided into an open switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; according to different voltage levels, the high-voltage switch cabinet, the medium-voltage switch cabinet, the low-voltage switch cabinet and the like can be further divided.
During the use of the switch cabinet, because of the influence of external factors, an arc is generated in the switch cabinet, a large amount of heat is attached in the arc generation process, the arc is generated to heat air in the switch cabinet, the air is expanded, temperature shock is generated in a short time, the air pressure rises instantly, the connection part of the switch cabinet is impacted, and the switch cabinet is deformed.
Disclosure of Invention
The invention aims to provide a switch cabinet with deformation monitoring and automatic control functions, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the switch cabinet with the deformation monitoring and automatic control functions comprises a cabinet body, wherein radiating fins are arranged above the cabinet body and penetrate through the cabinet body, a main body is arranged on one side of the interior of the cabinet body, the main body is positioned below the radiating fins, an arc striking net is arranged in the middle of the cabinet body, a plurality of metal tips are arranged on the arc striking net, the arc striking net is detachably connected with the cabinet body, and the positions of the arc striking net and the main body correspond to each other;
a piston plate and a control rod are arranged above the inside of the cabinet body, the piston plate is movably connected with the cabinet body through the control rod, and the outer wall size of the piston plate is matched with the outer wall size of the radiating fins in the cabinet body;
the control rod is electrically connected with the arc striking network, and a circuit protection element is arranged on a circuit of the arc striking network connected with the control rod; during use, the interior of the cabinet needs to be filled with a sufficient amount of shielding gas, preferably SF 6 The main body can generate heat during working, and the heat is conducted to the area where the radiating fins above through the protective gas are located, and as the radiating fins penetrate through the cabinet body, namely, a part of the radiating fins are located on the outer side of the cabinet body, the radiating fins are used for continuously conducting the heat in the cabinet body to the external environment;
an arc striking net is arranged in the opposite direction of the main body in the cabinet body, and a sufficient amount of metal tips are arranged on the arc striking net and act as follows: when the main body generates an electric arc, and the falling point of the electric arc is on the metal tip, the circuit between the arc striking net and the control rod is in a communicating state, current in the circuit enters the power supply or the capacitor after passing through the circuit protecting element, the power supply or the capacitor is used for temporarily storing redundant electric energy, and the control rod is driven to drive the control rod to move upwards when the electric arc is generated;
in the process of generating the electric arc, a large amount of heat is released, after the heat is absorbed by the protective gas near the electric arc, the protective gas rapidly expands, so that the air pressure in the cabinet body rises, meanwhile, the piston plate rises in the cabinet body, the distance between the piston plate and the bottom plate of the cabinet body increases, the air pressure rising rate in the cabinet body is reduced, the air pressure intensity is reduced by increasing the storage space of the protective gas, the protective gas in the cabinet body is synchronously driven to move upwards in the rising process of the piston plate, and meanwhile, the piston plate rises relative to the heat radiation fins, so that the contact area between the heat radiation fins and the protective gas is increased after the piston plate rises;
the air pressure monitoring element is arranged below the piston plate in the cabinet body, and the air pressure in the space below the piston plate in the cabinet body is monitored in real time through the air pressure monitoring element, so that the air pressure is prevented from rising due to air collision, and the cabinet body is deformed due to the air pressure.
Further, an air flow control component is arranged below the arc striking net, the arc striking net cuts off the inner middle area of the cabinet body, the air flow control component penetrates through the inner wall of one side of the upper main body of the cabinet body, the air flow control component is positioned right below the radiating fins, and the air flow control component is used for providing upward air flow outside and inside the cabinet body; the arc striking net is detachably connected with the cabinet body, the main body is required to be arranged in a region corresponding to the main body before working, the arc striking net partitions the front space of the main body into a front region and a rear region, meanwhile, an air flow control assembly is arranged below the main body, the air flow control assembly penetrates through the cabinet body, the air flow control assembly generates upward moving air flow at the two sides of the inner side and the outer side of the cabinet body, the upward moving air flow is positioned in the cabinet body, the moving direction of the air flow passes through the region where the main body is positioned, and the upper end and the lower end of the arc striking net are communicated, so that the air flow in the gap between the arc striking net and the main body moves upwards to reversely push the air flow at the other side of the arc striking net to flow downwards, and then circulating air flow is formed in the cabinet body and can pass through the region where the heat dissipation fins are positioned;
the air flow control assembly positioned at the outer side of the cabinet body synchronously generates upward moving air flow, the air flow passes through the area where the radiating fins at the outer side of the cabinet body are positioned so that heat carried on the radiating fins is quickly lost, the air flow at the outer side of the cabinet body moves unidirectionally, and protective gas in the cabinet body is in an internal circulation state, and the two air flow states are mutually matched so as to accelerate the quick dissipation of the heat generated during the working of the main body.
Further, the airflow control assembly comprises a shell and four one-way valves, the four one-way valves are respectively positioned at the upper side and the lower side of two ends of the shell, the shell penetrates through the cabinet body, a sliding plate and a driving rod are arranged in the shell, the driving rod is positioned at the front end and the rear end of the sliding plate, the sliding plate is connected with the shell through the driving rod, and the outer wall size of the sliding plate is matched with the inner wall size of the shell; the four one-way valves are used for limiting the input and output positions of air flow, the one-way valve positioned below the shell only can enable the air flow to enter the one-way valve from outside, the one-way valve positioned above the shell only can enable the air flow to leave from inside the shell, the driving rod pushes the sliding plate to horizontally reciprocate in the shell, the sliding plate partitions the shell into front and rear two spaces, one-way valve is arranged on the upper side and the lower side of each space, the two spaces are respectively connected with the spaces on the inner side and the outer side of the cabinet, when the sliding plate horizontally slides in the shell, the volumes of the spaces on the two sides of the sliding plate are continuously changed, when the volumes of the spaces continuously increase, the air pressure in the spaces is reduced, the air flow outside the shell can enter the space through the one-way valve below one side of the space so as to keep the air pressure balance in the space, and then when the volumes of the spaces continuously decrease, the air pressure in the space rises so that the air flow in the space leaves through the one-way valve above one side of the space, the driving rod continuously works so as to keep the air flow movement on the two sides of the inner side and the outer side of the cabinet, and the heat dissipation fins are matched with the heat dissipation fins to accelerate the main heat dissipation of the body;
the space in the cabinet body is separated from the space in the radiating fins, the space in the cabinet body is communicated with the space on the right side of the sliding plate in the air flow control assembly, the space on the right side of the sliding plate in the air flow control assembly is communicated with the external environment, and when the sliding plate slides left and right in the cabinet body, the sliding plate is matched with the one-way valves on the left side, the right side, the upper side and the lower side of the shell body, so that air flows on the left side and the right side of the sliding plate in the shell body can only move from bottom to top, further, the internal air flow circulation in the cabinet body is realized, and the air flow movement on the outer side of the cabinet body is realized.
Further, the airflow control assembly further comprises a plurality of alternating current plates, the alternating current plates are parallel to the driving rods, the alternating current plates are of hollow structures, openings are formed in the upper end and the lower end of one side of each alternating current plate, a transverse plate is arranged in the middle of each alternating current plate, through holes are formed in the transverse plate and the alternating current plates, and the through holes are arranged in the shell and are far away from one side of the cabinet body; the structure of the alternating current board ensures that the air flow movement areas at the two sides of the sliding plate are meshed with each other so as to improve heat transfer between the air flows at the two sides of the sliding plate, and because the movement mode of the protective gas in the cabinet body is internal circulation, the air flow at the outer side of the cabinet body is communicated with the external environment, and the main body which is always in a heat release state exists in the cabinet body, the temperature in the cabinet body is always higher than the external environment temperature;
because the alternating current board is hollow structure to the alternating current board only has the right side to be provided with the opening, make the alternating current board be linked together with the space on the board right side in the casing only, because the alternating current board is long to be greater than slide horizontal migration's length, when making the inside horizontal movement of casing of slide, the outer circulating air current can pass through the outer wall of alternating current board, simultaneously when the inner circulating air current produced, the inner circulating air current can the outer circulating air current to take place to contact through the alternating current board, realize the motion space of inner circulating air current and the motion space intermesh of outer circulating air current, through the mode of two sets of air current intermesh, increase area of contact, improve the heat transfer effect between the inner and outer circulating air current.
Further, the upper part of the alternating current plate is communicated with a one-way valve positioned above the inside of the cabinet body, and a rectangular notch is formed in one side, close to a Fang Shanxiang valve positioned below the inside of the cabinet body, of the alternating current plate; the shell is partitioned into two spaces by the sliding plate, wherein the space on one side where the notch is positioned is communicated with the space inside the cabinet body (hereinafter referred to as an inner circulation space, and the space on one side where the inside of the shell is communicated with the external environment is an outer circulation space), an alternating current plate and a transverse plate are arranged in the inner circulation space, the transverse plate divides the alternating current plate into an upper space and a lower space, a through hole is formed between the alternating current plate and the transverse plate, the through hole is arranged on one side of the transverse plate, which is close to the outer circulation space, and the arrangement of the transverse plate and the through hole is used for changing the flow path of protective gas in the inner circulation space;
the upper end of the alternating current plate is communicated with the one-way valve above the shell, so that the upper part of the alternating current plate is an air outlet end, the transverse plate and the through holes are arranged, when the size of the volume of the internal circulation space is changed, the protective gas below the transverse plate needs to pass through the through holes under the guidance of the transverse plate, and the purpose is to control the protective gas to pass through the range of the external circulation space, namely, the internal airflow movement path of the external circulation space is meshed with the airflow in the internal circulation space, and the heat carried by the protective gas is partially transferred to the airflow in the external circulation space through the alternating current plate during the internal movement of the shell;
a rectangular notch is formed in one side below the alternating current board, the space on the right side of the sliding plate in the shell is communicated with the space inside the alternating current board through the rectangular notch, and the space in the alternating current board and a gap between the alternating current board are in a communicated state, so that the volume of an internal circulation space can be changed during the movement of the sliding plate.
Further, the radiating fins are formed by two parts, the lower surfaces of the radiating fins positioned at the outer side of the cabinet body are inclined planes, the radiating fins positioned in the cabinet body are perpendicular to the radiating fins positioned at the outer side of the cabinet body, and the upper ends and the lower ends of the radiating fins positioned at the inner side and the outer side of the cabinet body are communicated.
Further, the heat dissipation fins are of a heat pipe structure, an insulating heat conduction layer is arranged inside the heat dissipation fins, and the insulating heat conduction layer is preferably alumina; the cooling fins outside the cabinet body are perpendicular to the cooling fins inside the cabinet body, the lower end surfaces of the cooling fins outside the cabinet body are inclined surfaces, so that working media inside the cooling fins outside the cabinet body fall after cooling and liquefying, then move to one side where the cooling fins inside the cabinet body are located along the inclined surfaces inside the cooling fins, liquefied working media in the cooling fins inside the cabinet body evaporate after being heated, working media formed after evaporation flow rises to the upper part inside the cooling fins, the upper ends and the lower ends of the cooling fins on the two sides inside the cabinet body are communicated, the cooling fins on the two sides inside the cabinet body are separated into two parts by the side plates of the cabinet body, and the working media inside the cooling fins on the outer side of the cabinet body are continuously cooled and liquefied, so that the air pressure inside the cooling fins on the outer side of the cabinet body is continuously reduced, and then gaseous working media inside the cooling fins inside the cabinet body are required to continuously move to the other cooling fins, so that the working media form movement circulation in the two parts of the cooling fins;
when an electric arc is generated in the cabinet body, the piston plate moves upwards under the drive of the control rod, so that the volume of a space below the piston plate is continuously increased, part of protective gas in the cabinet body fills the newly increased space, part of protective gas moves upwards, air is used as a medium for generating the electric arc, when the air current moves upwards, the electric arc forms an upward movement offset, namely an arc with a downward opening, and the upper part of the main body and the arc striking net is provided with the radiating fins;
the aluminum oxide is used as a interlayer of the radiating fins, so that the electric arc is separated from working medium in the radiating fins after contacting the radiating fins.
Further, a control valve is arranged on the piston plate, a chamber is arranged above the piston plate, and the control valve is used for controlling the communication state between the chamber and the space below the piston plate; when the main body needs to be maintained, the control rod drives the piston plate to descend, and the control valve is opened, so that part of protective gas in the space below the piston plate is transferred into the cavity (the volume of the cavity can be actively changed), a large amount of protective gas moves from the lower part of the piston plate to the space above the piston plate, then the control valve is closed, when the cabinet door is opened, the protective gas in the space above the cabinet body is separated from the space below the piston plate under the action of the piston plate, when the cabinet door is avoided being opened, the external air is in contact with the protective gas in the space above the piston plate, a large amount of protective gas is reserved during maintenance, the arc striking net can be detached from the cabinet door in front of the cabinet body, the main body can be maintained, the arc striking net is installed and the cabinet door is closed after the maintenance is completed, the gas inside the cabinet body is replaced, so that the purity of the protective gas in the cabinet body reaches the standard, then the control rod drives the piston plate to ascend and reset, and the control valve is opened, the protective gas inside the cavity moves towards the lower part of the piston plate again, and the structure of the piston plate and the control valve is set up: reducing the amount of shielding gas that needs to be filled during maintenance.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the switch cabinet with the deformation monitoring and automatic control functions, through the arrangement of the radiating fins, two groups of radiating fins are arranged on the inner side and the outer side of the cabinet body, the two groups of radiating fins are structurally arranged, so that the two groups of radiating fins are mutually communicated, meanwhile, the temperature difference of the inner side and the outer side of the switch cabinet is matched, the circulation effect of working mediums inside the two groups of radiating fins is further achieved, and the heat dissipation generated inside the switch cabinet is accelerated;
2. according to the switch cabinet with the deformation monitoring and automatic control functions, through the arrangement of the arc striking net and the piston plate, the metal tip actively attracts electric arcs, so that the generated electric arcs are mutually perpendicular to the radiating fins in the cabinet body from the overlooking angle, then the gas density is changed, the movement of air flow is controlled, the electric arcs are cut, the electric arcs are quickly disappeared, meanwhile, the control rod is electrically connected with the arc striking net, when the electric arcs are generated, the piston plate is quickly lifted, and the situation that the air pressure in the switch cabinet is quickly lifted, so that deformation of the switch cabinet is caused is avoided;
3. this cubical switchboard with deformation monitoring and automatic control function, through the setting of air current control assembly, the actuating lever drives the slide during operation, forms the air current in the internal and external both sides of cabinet respectively, and the internal air current cooperation striking net of cabinet realizes the air current inner loop, and the motion space intermeshing of two air currents in the casing is at the motion period, and then realizes that two air currents realize heat transfer through exchanging the board in the casing inside, accelerates the internal portion heat dissipation of cabinet.
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 a front view of a cabinet in full section;
fig. 2 is a schematic perspective view of a heat sink fin according to the present invention;
fig. 3 is a schematic diagram of a front view of a heat sink fin according to the present invention;
FIG. 4 is a schematic perspective view of an arc striking net according to the present invention;
FIG. 5 is a schematic view of the housing of the present invention in front elevational view in full section;
FIG. 6 is a schematic perspective view of a skateboard and an AC board according to the present invention;
FIG. 7 is a schematic perspective view of a single AC panel of the present invention;
fig. 8 is a schematic diagram of the front view in full section of a single ac panel of the present invention.
In the figure: 1. a cabinet body; 2. a heat radiation fin; 3. a main body; 4. an arc striking net; 401. a metal tip; 5. a piston plate; 501. a control valve; 502. a chamber; 6. a control lever; 7. an airflow control assembly; 701. a housing; 702. a one-way valve; 703. a slide plate; 704. a driving rod; 705. an alternating current board; 706. a cross plate; 707. and a through hole.
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.
Referring to fig. 1-8, the present invention provides the following technical solutions: the switch cabinet with the deformation monitoring and automatic control functions comprises a cabinet body 1, wherein radiating fins 2 are arranged above the cabinet body 1, the radiating fins 2 penetrate through the cabinet body 1, each radiating fin 2 is formed by two parts, the lower surface of each radiating fin 2 positioned at the outer side of the cabinet body 1 is an inclined surface, the radiating fins 2 positioned in the cabinet body 1 are vertical to the radiating fins 2 positioned at the outer side of the cabinet body 1, and the upper ends and the lower ends of the radiating fins 2 positioned at the inner side and the outer side of the cabinet body 1 are communicated;
the heat radiation fins 2 are of a heat pipe structure, an insulating heat conduction layer is arranged in the heat radiation fins 2, and the insulating heat conduction layer is preferably alumina;
two groups of radiating fins 2 are arranged on the inner side and the outer side of the cabinet body 1, the two groups of radiating fins 2 are structurally arranged, the two groups of radiating fins 2 are mutually communicated, and meanwhile, the temperature difference of the inner side and the outer side of the switch cabinet is matched, so that the circulation effect of working media in the two groups of radiating fins 2 is achieved, and the heat dissipation generated in the switch cabinet is accelerated;
a main body 3 is arranged on one side of the interior of the cabinet body 1, the main body 3 is positioned below the radiating fins 2, an arc striking net 4 is arranged in the middle of the interior of the cabinet body 1, a plurality of metal tips 401 are arranged on the arc striking net 4, the arc striking net 4 is detachably connected with the cabinet body 1, and the positions of the arc striking net 4 and the main body 3 correspond to each other;
a piston plate 5 and a control rod 6 are arranged above the interior of the cabinet body 1, the piston plate 5 is movably connected with the cabinet body 1 through the control rod 6, and the outer wall size of the piston plate 5 is matched with the outer wall size of the radiating fins 2 in the cabinet body 1;
a control valve 501 is arranged on the piston plate 5, a chamber 502 is arranged above the piston plate 5, and the control valve 501 is used for controlling the communication state between the chamber 502 and the space below the piston plate 5;
the control rod 6 is electrically connected with the arc striking net 4, and a circuit protection element is arranged on a circuit of the control rod 6 connected with the arc striking net 4;
the metal tip 401 actively attracts the arc, so that the generated arc is perpendicular to the radiating fins 2 in the cabinet body 1 from the overlook angle, then the gas density is changed, the gas flow is controlled to move, the arc is cut, the rapid disappearance of the arc is accelerated, meanwhile, the control rod 6 is electrically connected with the striking grid 4, when the arc is generated, the piston plate 5 is rapidly lifted, so that the rapid lifting of the gas pressure in the cabinet is avoided, and the deformation of the cabinet is caused;
an air flow control assembly 7 is arranged below the arc striking net 4, the arc striking net 4 cuts off the inner middle area of the cabinet body 1, the air flow control assembly 7 penetrates through the inner wall of one side of the upper main body 3 of the cabinet body 1, the air flow control assembly 7 is positioned right below the heat radiation fins 2, and the air flow control assembly 7 is used for providing upward moving air flow inside and outside the cabinet body 1;
the airflow control assembly 7 comprises a shell 701 and four one-way valves 702, the four one-way valves 702 are respectively positioned on the upper side and the lower side of two ends of the shell 701, the shell 701 penetrates through the cabinet 1, a sliding plate 703 and a driving rod 704 are arranged in the shell 701, the driving rod 704 is positioned at the front end and the rear end of the sliding plate 703, the sliding plate 703 is connected with the shell 701 through the driving rod 704, and the outer wall size of the sliding plate 703 is matched with the inner wall size of the shell 701;
the airflow control assembly 7 further comprises a plurality of alternating current plates 705, the alternating current plates 705 are parallel to the driving rods 704, the alternating current plates 705 are of hollow structures, openings are formed in the upper end and the lower end of one side of the alternating current plates 705, a transverse plate 706 is arranged in the middle of each alternating current plate 705, through holes 707 are formed in the transverse plate 706 and the alternating current plates 705, and the through holes 707 are formed in one side, far away from the cabinet body 1, of the casing 701;
the upper part of the alternating current plate 705 is communicated with the one-way valve 702 positioned above the inside of the cabinet body 1, and a rectangular notch is formed in one side of the alternating current plate 705, which is close to the one-way valve 702 positioned below the inside of the cabinet body 1;
during the operation of the sliding plate 703 driven by the driving rod 704, the driving rod 704 is a pneumatic rod or a hydraulic rod, air flows are formed at the inner side and the outer side of the cabinet body 1 respectively, the air flows inside the cabinet body 1 cooperate with the arc striking net 4 to realize the air flow internal circulation, the moving spaces of the two air flows in the housing 701 are meshed with each other during the movement, and then the two air flows inside the housing 701 realize heat transfer through the alternating current plate 705, so that the heat dissipation inside the cabinet body 1 is accelerated.
The working principle of the invention is as follows: during use, it is necessary to fill the interior of the cabinet 1 with a sufficient quantity of a protective gas, preferably SF 6 The main body 3 generates heat during operation, and the heat is conducted to the area where the radiating fins 2 above through the protective gas are located, because the radiating fins 2 penetrate through the cabinet body 1, namely, a part of the radiating fins 2 are located at the outer side of the cabinet body 1, the radiating fins 2 are used for continuously conducting the heat inside the cabinet body 1 to the external environment;
an arc striking net 4 is arranged in the opposite direction of the main body 3 in the cabinet body 1, and a sufficient amount of metal tips 401 are arranged on the arc striking net 4, and the metal tips 401 have the following functions: when the main body 3 has a discharging phenomenon in the cabinet body 1, the electric arc is more easily collected by the protruding tip, so the metal tip 401 is used for limiting the end point of the electric arc, the electric arc is prevented from contacting other components on the main body 3, meanwhile, the striking net 4 is electrically connected with the control rod 6, the control rod 6 is in the prior art, the control rod is a pneumatic rod or a hydraulic rod, a circuit protection element is arranged on a circuit between the striking net 4 and the control rod 6, the circuit protection element comprises a power supply or a capacitor, when the main body 3 generates the electric arc, and the falling point of the electric arc is on the metal tip 401, the circuit between the striking net 4 and the control rod 6 is in a communicating state, the current in the circuit enters the power supply or the capacitor after passing through the circuit protection element, the power supply or the capacitor is used for temporarily storing redundant electric energy, and the control rod 6 is driven to drive the piston plate 5 to move upwards when the electric arc is generated;
in the process of generating the electric arc, a large amount of heat is released, after the heat is absorbed by the protective gas near the electric arc, the protective gas rapidly expands, so that the air pressure in the cabinet body 1 rises, meanwhile, the piston plate 5 rises in the cabinet body 1, the distance between the piston plate 5 and the bottom plate of the cabinet body 1 increases, the air pressure rising rate in the cabinet body 1 is reduced by increasing the storage space of the protective gas, the air pressure intensity is reduced, the protective gas in the cabinet body 1 is synchronously driven to move upwards in the rising process of the piston plate 5, and meanwhile, the piston plate 5 rises relative to the heat radiation fins 2, so that the contact area between the heat radiation fins 2 and the protective gas is increased after the piston plate 5 rises;
the arc striking net 4 is detachably connected with the cabinet body 1, before the main body 3 works, the arc striking net 4 needs to be installed in a region corresponding to the main body 3, the arc striking net 4 partitions the front space of the main body 3 into a front region and a rear region, meanwhile, an air flow control assembly 7 is installed below the main body 3, the air flow control assembly 7 penetrates through the cabinet body 1, the air flow control assembly 7 generates upward moving air flow at the inner side and the outer side of the cabinet body 1, the upward moving air flow is positioned in the cabinet body 1, the moving direction of the air flow passes through the region where the main body 3 is positioned, and the upper end and the lower end of the arc striking net 4 are communicated, so that the air flow in the gap between the arc striking net 4 and the main body 3 moves upwards to reversely push the air flow at the other side of the arc striking net 4 to flow downwards, thereby forming circulating air flow in the interior of the cabinet body 1, and the circulating air flow can pass through the region where the heat dissipation fins 2 are positioned;
the air flow control assembly 7 positioned at the outer side of the cabinet body 1 synchronously generates upward moving air flow, the air flow passes through the area where the radiating fins 2 positioned at the outer side of the cabinet body 1 are positioned so as to facilitate the rapid loss of heat carried by the radiating fins 2, the air flow at the outer side of the cabinet body 1 moves unidirectionally, the protective gas in the cabinet body 1 is in an internal circulation state, and the two air flow states are mutually matched so as to accelerate the rapid dissipation of heat generated during the working period of the main body 3;
the function of the four check valves 702 is to limit the input and output positions of air flow, the check valves 702 below the shell 701 can only realize that air flow enters the check valves 702 from outside, the check valves 702 above the shell 701 can only realize that air flow leaves from inside the shell 701, the driving rod 704 pushes the sliding plate 703 to horizontally reciprocate in the shell 701, the sliding plate 703 partitions the shell 701 into front and rear two spaces, one check valve 702 is arranged on the upper side and the lower side of each space, the two spaces are respectively connected with the spaces on the inner side and the outer side of the cabinet 1, when the sliding plate 703 horizontally slides in the shell 701, the volume of the space on the two sides of the sliding plate 703 is continuously changed, when the volume of the space is continuously increased, the air flow outside the shell 701 can enter the space through the check valves 702 on one side of the space to keep the air pressure balance inside the space, then when the volume of the space is continuously reduced, the air flow inside the space is separated through the check valves 702 on the upper side of the space, the driving rod 704 continuously works to keep the two sides of the cabinet 1 to keep the air flow inside the cabinet to move along with the outer side of the heat dissipation fins 2;
the structure of the alternating current board 705 is arranged to enable the air flow movement areas at the two sides of the sliding board 703 to be meshed with each other so as to improve heat transfer between the air flows at the two sides of the sliding board 703, and because the movement mode of the protective gas in the cabinet body 1 is internal circulation, the air flow at the outer side of the cabinet body 1 is communicated with the external environment, and the main body 3 which is always in a heat release state exists in the cabinet body 1, so that the internal temperature of the cabinet body 1 is always higher than the external environment temperature;
the casing 701 is partitioned into two spaces by the sliding plate 703, wherein the space on one side where the notch is located is communicated with the space inside the cabinet 1, which is called as an inner circulation space, the space on one side where the inside of the casing 701 is communicated with the external environment is an outer circulation space, wherein an alternating current plate 705 and a transverse plate 706 are arranged in the inner circulation space, the transverse plate 706 partitions the alternating current plate 705 into an upper space and a lower space, and since a through hole 707 exists between the alternating current plate 705 and the transverse plate 706, and the through hole 707 is arranged on one side where the transverse plate 706 is close to the outer circulation space, the arrangement of the transverse plate 706 and the through hole 707 is to change the flow path of the protective gas in the inner circulation space;
the upper end of the alternating current plate 705 is communicated with the one-way valve 702 above the shell 701, so that the upper part of the alternating current plate 705 is an air outlet end, the cross plate 706 and the through holes 707 are arranged, when the size of the volume of the inner circulation space of the sliding plate 703 is changed, the shielding gas below the cross plate 706 needs to pass through the through holes 707 under the guidance of the cross plate 706, the purpose is to control the shielding gas to pass through the range of the outer circulation space, namely, the inner airflow movement path of the outer circulation space is meshed with the airflow in the inner circulation space, and a part of heat carried by the shielding gas is transferred to the airflow in the outer circulation space through the alternating current plate 705 during the movement of the shielding gas in the shell 701;
a rectangular notch is arranged on one side below the alternating current plates 705, the alternating current plates 705 in the internal circulation space are mutually communicated through the rectangular notch, and the space in the alternating current plates 705 and the gap between the alternating current plates 705 are in a communicated state, so that the volume of the internal circulation space is changed during the movement of the sliding plate 703;
the heat radiation fins 2 on the outer side of the cabinet body 1 are perpendicular to the heat radiation fins 2 on the inner side of the cabinet body 1, the lower end surfaces of the heat radiation fins 2 on the outer side of the cabinet body 1 are inclined surfaces, so that working media in the heat radiation fins 2 on the outer side of the cabinet body 1 fall down after cooling and liquefying, then move to one side where the heat radiation fins 2 on the inner side of the cabinet body 1 are located along the inclined surfaces on the inner side of the heat radiation fins 2, liquefied working media in the heat radiation fins 2 on the inner side of the cabinet body 1 evaporate after being heated, the evaporated working media flow rises to the upper side and lower side of the heat radiation fins 2 on the inner side and the outer side of the cabinet body 1 are communicated, the heat radiation fins 2 on the inner side and the outer side of the cabinet body 1 are separated into two parts by the side plates of the cabinet body 1, and the working media in the heat radiation fins 2 on the outer side of the cabinet body 1 are continuously cooled and liquefied, so that the air pressure in the heat radiation fins 2 on the outer side of the cabinet body 1 is continuously reduced, and then the gaseous working media in the heat radiation fins 2 on the inner side of the cabinet body 1 are continuously moved to the other heat radiation fins 2, so that the working media form movement circulation in the two parts of the heat radiation fins 2;
when an electric arc is generated in the cabinet body 1, the piston plate 5 moves upwards under the drive of the control rod 6, so that the volume of the space below the piston plate 5 is continuously increased, the protective gas in the cabinet body 1 fills the newly increased space, part of the protective gas moves upwards, air is used as a medium for generating the electric arc, when the air flow moves upwards, the electric arc forms upwards-moving offset, namely an arc with a downward opening, and when the electric arc rises to the area where the heat dissipation fins 2 are arranged above the main body 3 and the striking grid 4, the electric arc is separated by the heat dissipation fins 2, a plurality of small electric arcs are formed, after the electric arc is separated, a current path between the main body 3 and the striking grid 4 disappears, and part of the electric arc is actively disconnected due to the fact that the generated deformation is larger, so that the length of the electric arc grid is increased;
alumina is used as an interlayer of the radiating fins 2, so that the electric arc is separated from working medium in the radiating fins 2 after contacting the radiating fins 2;
when the main body 3 needs to be maintained, the control rod 6 drives the piston plate 5 to descend, and the control valve 501 is opened, so that part of protective gas in the space below the piston plate 5 is transferred to the volume of the chamber 502 in the chamber 502 to be actively changed, then the control valve 501 is closed, the cabinet door in front of the cabinet body 1 can be opened, the arc striking net 4 is detached, the main body 3 can be maintained, the arc striking net 4 is installed after the maintenance is completed, the cabinet door is closed, the gas in the cabinet body 1 is replaced, so that the purity of the protective gas in the cabinet body 1 meets the standard, then the control rod 6 drives the piston plate 5 to ascend and reset, the control valve 501 is opened, the protective gas in the chamber 502 moves to the lower side of the piston plate 5 again, and the structures of the piston plate 5 and the control valve 501 are set in that: reducing the amount of shielding gas that needs to be filled during maintenance.
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.
Finally, it should be noted that: 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 (8)
1. Switch cabinet with deformation monitoring and automatic control functions, comprising a cabinet body (1), and being characterized in that: radiating fins (2) are arranged above the cabinet body (1), the radiating fins (2) penetrate through the cabinet body (1), a main body (3) is arranged on one side of the interior of the cabinet body (1), the main body (3) is positioned below the radiating fins (2), an arc striking net (4) is arranged in the middle of the cabinet body (1), a plurality of metal tips (401) are arranged on the arc striking net (4), the arc striking net (4) is detachably connected with the cabinet body (1), and the positions of the arc striking net (4) and the main body (3) are corresponding;
a piston plate (5) and a control rod (6) are arranged above the inside of the cabinet body (1), the piston plate (5) is movably connected with the cabinet body (1) through the control rod (6), and the outer wall size of the piston plate (5) is matched with the outer wall size of the radiating fins (2) in the cabinet body (1);
the control rod (6) is electrically connected with the arc striking net (4), and a circuit protection element is arranged on a circuit of the arc striking net (4) connected with the control rod (6).
2. A switch cabinet with deformation monitoring and automatic control functions according to claim 1, characterized in that: the utility model discloses a cabinet, including cabinet body (1) and radiating fin (2), including cabinet body (1) and radiating fin, the below of striking net (4) is provided with air current control assembly (7), the inside middle zone of cabinet body (1) is cut off to striking net (4), air current control assembly (7) run through the inner wall of main part (3) place one side on cabinet body (1), air current control assembly (7) are located under radiating fin (2), air current control assembly (7) are used for providing the air current of upward movement in cabinet body (1) inside and outside.
3. A switch cabinet with deformation monitoring and automatic control functions according to claim 2, characterized in that: the air flow control assembly (7) comprises a shell (701) and four one-way valves (702), wherein the four one-way valves (702) are respectively arranged on the upper side and the lower side of two ends of the shell (701), the shell (701) penetrates through the cabinet body (1), a sliding plate (703) and a driving rod (704) are arranged inside the shell (701), the driving rod (704) is arranged at the front end and the rear end of the sliding plate (703), the sliding plate (703) is connected with the shell (701) through the driving rod (704), and the outer wall size of the sliding plate (703) is matched with the inner wall size of the shell (701).
4. A switch cabinet with deformation monitoring and automatic control functions according to claim 3, characterized in that: the air flow control assembly (7) further comprises a plurality of alternating current plates (705), the alternating current plates (705) are parallel to the driving rod (704), the alternating current plates (705) are of hollow structures, openings are formed in the upper end and the lower end of one side of each alternating current plate (705), transverse plates (706) are arranged in the middle of each alternating current plate (705), through holes (707) are formed in the transverse plates (706) and the alternating current plates (705), and the through holes (707) are formed in one side, away from the cabinet body (1), of the housing (701).
5. The switch cabinet with deformation monitoring and automatic control functions according to claim 4, wherein: the upper part of the alternating current plate (705) is communicated with the one-way valve (702) positioned above the inside of the cabinet body (1), and a rectangular notch is formed in one side, close to the valve (702) positioned at the lower part Fang Shanxiang inside the cabinet body (1), of the alternating current plate (705).
6. A switch cabinet with deformation monitoring and automatic control functions according to claim 1, characterized in that: the radiating fins (2) are formed by two parts, the lower surfaces of the radiating fins (2) positioned at the outer side of the cabinet body (1) are inclined planes, the radiating fins (2) positioned in the cabinet body (1) are perpendicular to the radiating fins (2) positioned at the outer side of the cabinet body (1), and the upper ends and the lower ends of the radiating fins (2) positioned at the inner side and the outer side of the cabinet body (1) are communicated.
7. The switch cabinet with deformation monitoring and automatic control functions according to claim 6, wherein: the heat radiation fins (2) are of a heat pipe structure, an insulating heat conduction layer is arranged inside the heat radiation fins (2), and the insulating heat conduction layer is preferably alumina.
8. A switch cabinet with deformation monitoring and automatic control functions according to claim 1, characterized in that: the piston plate (5) is provided with a control valve (501), a chamber (502) is arranged above the piston plate (5), and the control valve (501) is used for controlling the communication state between the chamber (502) and the space below the piston plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311248190.4A CN117039695B (en) | 2023-09-26 | 2023-09-26 | Switch cabinet with deformation monitoring and automatic control functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311248190.4A CN117039695B (en) | 2023-09-26 | 2023-09-26 | Switch cabinet with deformation monitoring and automatic control functions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117039695A true CN117039695A (en) | 2023-11-10 |
| CN117039695B CN117039695B (en) | 2024-01-30 |
Family
ID=88634017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311248190.4A Active CN117039695B (en) | 2023-09-26 | 2023-09-26 | Switch cabinet with deformation monitoring and automatic control functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117039695B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417443B1 (en) * | 2001-03-29 | 2002-07-09 | Eaton Corporation | Exhaust chamber for arc resistant cabinets |
| CN209046020U (en) * | 2018-06-30 | 2019-06-28 | 惠州市明业电气设备有限公司 | A kind of safe and reliable power distribution cabinet |
| CN111146705A (en) * | 2020-01-20 | 2020-05-12 | 张金辉 | Automatic flicking self-protection power distribution cabinet based on capacitance change |
| CN212304390U (en) * | 2020-05-18 | 2021-01-05 | 安徽埃菲科电气设备制造有限公司 | Low-voltage switchgear that radiating effect is good |
| CN212543167U (en) * | 2020-09-07 | 2021-02-12 | 武汉华源电气设备有限责任公司 | Arcing pressure relief device of switchgear cabinet |
| CN113594870A (en) * | 2021-08-09 | 2021-11-02 | 南宁超伏电气科技有限公司 | Transformer counterattack overvoltage protector |
| CN114142364A (en) * | 2021-12-14 | 2022-03-04 | 徐先林 | Low-voltage power distribution cabinet |
| CN215989975U (en) * | 2021-09-23 | 2022-03-08 | 常州市旭日电器有限公司 | Safety explosion-proof device of 10kV high-voltage switch cabinet |
| CN216774047U (en) * | 2021-12-30 | 2022-06-17 | 江西泰开成套电器有限公司 | Pressure relief structure of switch cabinet |
| CN218678003U (en) * | 2022-06-30 | 2023-03-21 | 国网河南省电力公司禹州市供电公司 | Electric power is with dustproof electronic box that explodes |
| CN116488051A (en) * | 2023-05-24 | 2023-07-25 | 佛山市鼎嘉电气科技有限公司 | Decompression type switch cabinet based on open type gas escape in different directions |
-
2023
- 2023-09-26 CN CN202311248190.4A patent/CN117039695B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6417443B1 (en) * | 2001-03-29 | 2002-07-09 | Eaton Corporation | Exhaust chamber for arc resistant cabinets |
| CN209046020U (en) * | 2018-06-30 | 2019-06-28 | 惠州市明业电气设备有限公司 | A kind of safe and reliable power distribution cabinet |
| CN111146705A (en) * | 2020-01-20 | 2020-05-12 | 张金辉 | Automatic flicking self-protection power distribution cabinet based on capacitance change |
| CN212304390U (en) * | 2020-05-18 | 2021-01-05 | 安徽埃菲科电气设备制造有限公司 | Low-voltage switchgear that radiating effect is good |
| CN212543167U (en) * | 2020-09-07 | 2021-02-12 | 武汉华源电气设备有限责任公司 | Arcing pressure relief device of switchgear cabinet |
| CN113594870A (en) * | 2021-08-09 | 2021-11-02 | 南宁超伏电气科技有限公司 | Transformer counterattack overvoltage protector |
| CN215989975U (en) * | 2021-09-23 | 2022-03-08 | 常州市旭日电器有限公司 | Safety explosion-proof device of 10kV high-voltage switch cabinet |
| CN114142364A (en) * | 2021-12-14 | 2022-03-04 | 徐先林 | Low-voltage power distribution cabinet |
| CN216774047U (en) * | 2021-12-30 | 2022-06-17 | 江西泰开成套电器有限公司 | Pressure relief structure of switch cabinet |
| CN218678003U (en) * | 2022-06-30 | 2023-03-21 | 国网河南省电力公司禹州市供电公司 | Electric power is with dustproof electronic box that explodes |
| CN116488051A (en) * | 2023-05-24 | 2023-07-25 | 佛山市鼎嘉电气科技有限公司 | Decompression type switch cabinet based on open type gas escape in different directions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117039695B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210468441U (en) | High-heat-dissipation high-voltage switch cabinet | |
| CN106654907A (en) | Communication equipment enclosure with high temperature resisting function | |
| CN116031053B (en) | Power transformer device with monitoring function | |
| CN117039695B (en) | Switch cabinet with deformation monitoring and automatic control functions | |
| CN102945768A (en) | Arc-control device of breaker | |
| CN116313589B (en) | Arc extinguishing system and circuit breaker | |
| CN111682434A (en) | Vacuum circuit breaker arranged in central metal armored switch equipment | |
| CN217182669U (en) | Low-voltage draw-out type switch cabinet | |
| CN206992558U (en) | Arc-burning-resistant natural air-cooled large-current movable switch cabinet | |
| CN112423502A (en) | Intelligent monitoring device and monitoring method for electric power system | |
| US4270034A (en) | Puffer type circuit interrupter | |
| CN112133607B (en) | A quick cooling protection mechanism behind circuit breaker short circuit for in intelligent manufacturing | |
| CN115172117A (en) | Automatic partition type arc extinguishing shell for circuit breaker | |
| CN115206705A (en) | Relay with arc quenching device | |
| CN212304390U (en) | Low-voltage switchgear that radiating effect is good | |
| CN211742863U (en) | Novel transformer for transformer substation | |
| CN221652097U (en) | Protective isolation device for high-voltage electrical equipment of coal preparation plant | |
| CN110265902A (en) | A kind of high pressure extraction type switch cabinet for reinforcing heat dissipation performance | |
| CN219435728U (en) | Direct current breaker arc extinguishing device capable of rapidly extinguishing arc | |
| CN111293696A (en) | Anti-harmonic capacitor | |
| US9105428B2 (en) | Method of extinguishing an electric arc in a low or high voltage switchgear by pulse discharge | |
| CN111653964B (en) | Closed self-loopa heat dissipation switch board | |
| CN214673836U (en) | Automatic switch cabinet with efficient heat dissipation mechanism | |
| CN212210231U (en) | GMD low pressure cabinet of being qualified for next round of competitions that ventilation heat dissipation is good | |
| CN221766678U (en) | Arc extinguishing structure of circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |