CN117833077A - Environment-friendly air insulation type switch equipment - Google Patents
Environment-friendly air insulation type switch equipment Download PDFInfo
- Publication number
- CN117833077A CN117833077A CN202410252400.5A CN202410252400A CN117833077A CN 117833077 A CN117833077 A CN 117833077A CN 202410252400 A CN202410252400 A CN 202410252400A CN 117833077 A CN117833077 A CN 117833077A
- Authority
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- China
- Prior art keywords
- cavity
- storage tank
- water storage
- sliding
- cabinet body
- 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
- 238000009413 insulation Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 230000001681 protective effect Effects 0.000 claims description 10
- 210000003437 trachea Anatomy 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007789 sealing Methods 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention belongs to the technical field of switch cabinets, and particularly relates to environment-friendly air insulation type switch equipment, which comprises a cabinet body, wherein a control board is arranged on the front side of the cabinet body, a wiring chamber is arranged on the rear side of the cabinet body, cavities are arranged on the left side and the right side of the cabinet body, through holes communicated with the wiring chamber are formed in the inner walls of the lower sides of the two cavities, sliding blocks are slidably and hermetically assembled in the two cavities, a heat exchange cavity is arranged between the two cavities, a discharge hole communicated with a discharge cavity is formed in the upper side of the heat exchange cavity, a coiled pipe is assembled in the heat exchange cavity, a water storage tank is arranged on the rear side of the cabinet body, clear water is assembled in the water storage tank, the output end of the coiled pipe is communicated with the lower side of the water storage tank, a sliding plate is hermetically assembled in a sliding manner in the water storage tank, and a linkage mechanism is assembled between the sliding plate and the two sliding blocks.
Description
Technical Field
The invention belongs to the technical field of switch cabinets, and particularly relates to environment-friendly air insulation type switch equipment.
Background
The air insulation switch cabinet is a switch cabinet using gas as an insulation medium, the switch cabinet seals high-voltage elements such as buses, circuit breakers, isolating switches, power cables and the like in a shell filled with lower gas pressure, and the components of a power system are insulated and protected by the gas, so that the equipment is widely applied to the processes of power generation, power transmission and distribution and is used for switching, control and protection, however, the dangerous phenomena such as arcing and the like can occur in a wiring chamber at the rear side of the switch equipment when accidents happen, a large amount of high-pressure high-temperature gas can be generated inside the switch cabinet due to the electric power when the arcing phenomenon happens, and the high-pressure high-temperature gas can be directly discharged outside through a channel which is communicated outside the wiring chamber aiming at the situation;
however, at present, only high-pressure high-temperature gas can be directly sprayed outwards, the temperature of the sprayed gas is still very high, and the outside staff is easily injured.
Disclosure of Invention
The purpose of the invention is that: aims to provide an environment-friendly air-insulated switchgear for solving the problems existing in the background technology.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides an environment-friendly air insulation type switchgear, includes the cabinet body, cabinet body front side is equipped with the control panel, cabinet body rear side is equipped with the wiring room, cabinet body rear side upper end is equipped with the chamber that looses, the left and right sides of cabinet body is equipped with the cavity, two cavity downside inner wall is equipped with the through-hole with wiring room intercommunication, two equal sliding seal is equipped with the slider in the cavity, two the slider upside all is equipped with first spring, two be equipped with the heat transfer chamber between the cavity, the heat transfer chamber upside is equipped with the discharge port with the chamber intercommunication that looses, two the cavity lateral wall all is equipped with the connecting hole with heat transfer chamber bottom intercommunication, heat transfer intracavity portion is equipped with the coiled pipe, cabinet body rear side is equipped with the storage water tank, the storage water tank in-built into the input and the storage water tank upper end of coiled pipe are connected, the output and the storage water tank downside intercommunication of coiled pipe, interior sliding seal encapsulation slide, be equipped with the link gear between slide and the two sliders.
The linkage mechanism comprises a mounting block arranged on the upper side of the water storage tank, an inner cavity is arranged in the mounting block, a rotating rod is rotationally assembled in the inner cavity, a reset assembly matched with the rotating rod is arranged on the outer surface of the mounting block, a through hole communicated with the water storage tank is formed in the inner wall of the lower side of the inner cavity, a stay wire penetrating through the through hole and connected with the sliding plate is fixedly connected to the outer surface of the rotating rod, and a limiting assembly is assembled between the two sliding blocks and the stay wire.
The reset assembly comprises a protective cover arranged on the outer surface of the installation block, the rotating rod rotates to extend into the protective cover, and a coil spring connected with the rotating rod is assembled in the protective cover.
The limiting assembly comprises a mounting cavity arranged on the upper side of the water storage tank, the through hole penetrates through the middle of the mounting cavity, second springs are arranged on the left side and the right side of the mounting cavity, clamping blocks matched with the pull wires are arranged at two ends, close to each other, of the second springs, and follow-up members are arranged between the clamping blocks and the two sliding blocks respectively.
The follow-up member comprises a pulling hole, two ends of the pulling hole are respectively communicated with the cavity and the mounting cavity, a telescopic rope is fixedly connected to the lower side of the sliding block, and the other end of the telescopic rope penetrates through the pulling hole and is fixedly connected with the clamping block.
The left and right sides of control panel all is equipped with the fixed strip, two the front end of fixed strip all is equipped with the protection gasbag, two the fixed strip all is equipped with the trachea with the protection gasbag intercommunication, two the trachea respectively with the upper end intercommunication of two cavitys.
The water pipe is arranged on the lower side of the water storage tank in a communicating way, and the water pipe is provided with an on-off valve.
Slide bars are arranged on the left side and the right side of the slide plate, and the upper ends of the two slide bars are fixedly connected with limiting blocks which extend out of the water storage tank in a sliding mode.
The invention has smart structure, can automatically exchange heat for high-temperature and high-pressure gas by using the coiled pipe under the condition of not using electrical equipment when the arcing phenomenon occurs, can ensure that clean water in the coiled pipe is in a flowing state, improves the heat exchange effect, and can drive the protective air bags at the left side and the right side of the control panel to expand so as to protect the staff at the front side of the control panel.
Drawings
The invention may be further illustrated by means of non-limiting examples given in the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of another embodiment of the present invention;
FIG. 3 is a schematic view of a partial structure of the present invention;
FIG. 4 is a schematic cross-sectional view of the present invention;
FIG. 5 is an enlarged schematic view of the structure shown at A in FIG. 4;
FIG. 6 is a schematic view of another cross-sectional structure of the present invention;
FIG. 7 is an enlarged schematic view of the structure shown at B in FIG. 6;
fig. 8 is a schematic sectional view of a water storage tank according to the present invention.
The main reference numerals are as follows:
the cabinet body 1, the control board 11, the wiring chamber 12, the outlet chamber 13, the cavity 14, the through hole 141, the sliding block 15, the first spring 16, the heat exchange chamber 17, the outlet hole 171, the connecting hole 18, the coiled pipe 2, the water storage tank 21, the sliding plate 22, the mounting block 3, the inner cavity 31, the rotating rod 32, the through hole 33, the stay wire 34, the protection cover 35, the coil spring 36, the mounting chamber 37, the second spring 38, the clamping block 39, the stay hole 4, the telescopic rope 41, the fixing strip 42, the protection air bag 43, the air pipe 44, the water pipe 45, the on-off valve 46, the sliding rod 47 and the limiting block 48.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following technical scheme of the present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1-8, the environment-friendly air insulation type switch device comprises a cabinet body 1, a control board 11 is arranged on the front side of the cabinet body 1, a wiring chamber 12 is arranged on the rear side of the cabinet body 1, a distributing chamber 13 is arranged at the upper end of the rear side of the cabinet body 1, cavities 14 are arranged on the left side and the right side of the cabinet body 1, through holes 141 communicated with the wiring chamber 12 are formed in the inner walls of the lower sides of the two cavities 14, sliding blocks 15 are slidably and hermetically assembled in the two cavities 14, a first spring 16 is arranged on the upper sides of the two sliding blocks 15, a heat exchange chamber 17 is arranged between the two cavities 14, a discharging hole 171 communicated with the distributing chamber 13 is formed in the upper side of the heat exchange chamber 17, a connecting hole 18 communicated with the bottom of the heat exchange chamber 17 is formed in the side walls of the two cavities 14, a coiled pipe 2 is assembled in the heat exchange chamber 17, a water storage tank 21 is arranged on the rear side of the cabinet body 1, the input end of the coiled pipe 2 is connected with the upper end of the water storage tank 21, the output end of the coiled pipe 2 is communicated with the lower side of the water storage 21, sliding plates 22 are hermetically packaged in the water storage 21, a sliding plate 22 is assembled between the sliding plates 22 and the sliding blocks 15 are assembled with a linkage mechanism.
When arcing occurs in the wiring chamber 12 at the rear side of the cabinet body 1, a large amount of high-temperature and high-pressure gas is generated in the wiring chamber 12, the gas enters the cavity 14 from the two through holes 141, the pressure in the cavity 14 is increased after the gas enters the cavity 14, the slide block 15 in the cavity 14 is driven to move upwards, the slide block 15 drives the first spring 16 to compress, when the slide block 15 moves upwards through the connecting hole 18, the gas enters the heat exchange cavity 17 through the connecting hole 18, after the slide block 15 moves upwards through the connecting hole 18, the linkage mechanism is driven to start to work, the slide plate 22 in the water storage tank 21 is driven to slide upwards by the linkage mechanism, as the slide plate 22 is assembled in the water storage tank 21 in a sliding and sealing way, when the slide plate 22 moves upwards in the water storage tank 21, the clean water of the water storage tank 21 is pushed to move upwards, the clean water of the water storage tank 21 is pushed into the coiled pipe 2, and as the slide plate 22 continuously moves upwards, so that clean water is gradually injected into the coiled pipe 2, so that the clean water in the coiled pipe 2 is in a flowing state, the clean water in the coiled pipe 2 flows into the lower side of the water storage tank 21 and is positioned at the lower side of the sliding plate 22, the high-pressure and high-temperature gas entering the heat exchange cavity 17 is contacted with the coiled pipe 2, so that the heat exchange between the gas and the clean water in the coiled pipe 2 is realized, the temperature of the gas can be reduced, the coiled pipe 2 is in a flowing state, the heat exchange efficiency of the coiled pipe 2 and the gas can be further improved, after the heat exchange with the coiled pipe 2, the gas is discharged outwards through the discharge hole 171, the gas discharged from the discharge hole 171 then flows into the discharge cavity 13 and then drifts outside, the design can cool the high-temperature gas and then outwards discharge, the risk of damage to the outside is reduced, and under the condition that no electrical equipment is additionally used after the arcing phenomenon occurs, the clear water in the coiled pipe 2 is automatically driven to be in a flowing state, the heat exchange effect on gas is improved, after the arcing phenomenon is dissipated, the sliding plate 22 can be pushed to move downwards in the water storage tank 21, so that the clear water flows back to the upper side of the water storage tank 21 through the coiled pipe 2 again, the clear water can be recycled, water resources are solved, and the environmental protection effect is improved.
The linkage mechanism comprises a mounting block 3 arranged on the upper side of the water storage tank 21, an inner cavity 31 is arranged in the mounting block 3, a rotating rod 32 is rotatably assembled in the inner cavity 31, a reset component matched with the rotating rod 32 is arranged on the outer surface of the mounting block 3, a through hole 33 communicated with the water storage tank 21 is formed in the inner wall of the lower side of the inner cavity 31, a stay wire 34 penetrating through the through hole 33 and connected with the sliding plate 22 is fixedly connected to the outer surface of the rotating rod 32, and a limit component is assembled between the two sliding blocks 15 and the stay wire 34.
When the arcing phenomenon generates high-temperature high-pressure gas, the pressure in the cavity 14 drives the sliding block 15 to move upwards, the limiting component can be driven to start working, the limiting component cancels the limiting of the stay wire 34, the resetting component starts working at the moment, the rotating rod 32 is driven to rotate, the rotating rod 32 rotates to wind the stay wire 34, the sliding plate 22 is driven to move upwards in the water storage tank 21 through the stay wire 34, and the coil spring 36 is in a contracted state when the sliding plate 22 is positioned at the lower side of the water storage tank 21.
The reset assembly comprises a protective cover 35 arranged on the outer surface of the mounting block 3, the rotating rod 32 rotates to extend into the protective cover 35, and a coil spring 36 connected with the rotating rod 32 is arranged in the protective cover 35. When the slide plate 22 is positioned at the lower side of the water storage tank 21, the coil spring 36 is in a contracted state, after limiting the pull wire 34 is canceled, the coil spring 36 can be stretched to drive the rotating rod 32 to rotate, and the rotating rod 32 can wind the pull wire 34 to drive the slide plate 22 to move upwards.
The limiting assembly comprises a mounting cavity 37 arranged on the upper side of the water storage tank 21, the through hole 33 penetrates through the middle of the mounting cavity 37, second springs 38 are respectively arranged on the left side and the right side of the mounting cavity 37, clamping blocks 39 matched with the stay wires 34 are respectively arranged on the ends, close to each other, of the two second springs 38, and follow-up members are respectively arranged between the two clamping blocks 39 and the two sliding blocks 15. Under the action of the extension of the second springs 38 at the two sides, the clamping blocks 39 at the two sides are driven to be close to each other, the clamping blocks 39 at the two sides can clamp the stay wire 34, so that the stay wire 34 can be clamped and limited, after the sliding block 15 moves upwards, the clamping blocks 39 at the two sides are driven to be far away from each other by the follow-up member, the two second springs 38 are compressed, so that the clamping of the stay wire 34 is canceled, and the rotating rod 32 can wind the stay wire 34.
The follow-up member comprises a pulling hole 4, two ends of the pulling hole 4 are respectively communicated with the cavity 14 and the mounting cavity 37, a telescopic rope 41 is fixedly connected to the lower side of the sliding block 15, and the other end of the telescopic rope 41 passes through the pulling hole 4 and is fixedly connected with the clamping block 39.
When the sliding block 15 moves upwards in the cavity 14, the clamping block 39 can be pulled to start moving through the telescopic rope 41, and the sliding block 15 can still move upwards in the cavity 14 due to the telescopic rope 41 after the clamping block 39 moves to the limit on the side far away from the stay wire 34.
The left and right sides of control panel 11 all are equipped with fixed strip 42, and the front end of two fixed strips 42 all is equipped with protection gasbag 43, and two fixed strips 42 all are equipped with the trachea 44 with protection gasbag 43 intercommunication, and two trachea 44 communicate with the upper end of two cavities 14 respectively. Because the gas pressure is high, even if gas can enter the heat exchange cavity 17 from the connecting hole 18, therefore, the sliding block 15 still moves upwards in the cavity 14 under the action of the gas pressure, when the sliding block 15 continuously moves upwards in the cavity 14, the air in the cavity 14 is extruded, the gas in the cavity 14 is supplied into the protection air bag 43 through the air pipe 44, the protection air bag 43 is quickly expanded, the protection air bags 43 on two sides are quickly expanded, in the process of arcing, if staff exists on the front side of the control panel 11, the staff can be protected through the protection air bags 43 on two sides, when the pressure in the cavity 14 is gradually recovered, under the action of the stretching of the first spring 16, the sliding block 15 is driven to move in a resetting mode, the upper side of the cavity 14 can form negative pressure, the gas in the protection air bag 43 is sucked into the cavity 14, the protection air bag 43 is driven to shrink and reset, and the protection on the staff is cancelled.
The upper side of the water storage tank 21 is provided with a water pipe 45 in a communicating way, and the water pipe 45 is provided with an on-off valve 46. After the on-off valve 46 is opened by a worker, the clean water in the water storage tank 21 can be replaced through the water pipe 45.
Slide bars 47 are arranged on the left side and the right side of the slide plate 22, and the upper ends of the two slide bars 47 are respectively extended out of the water storage tank 21 in a sliding way and fixedly connected with a limiting block 48. When the slide plate 22 moves upwards, the slide rods 47 at two sides can be driven to move upwards to extend out of the water storage tank 21, the slide rods 47 at two sides can limit the slide plate 22, when the slide plate 22 is positioned on the upper side of the water storage tank 21, a worker can press the limit blocks 48 at two sides, and the slide plate 22 is driven to move downwards in the water storage tank 21 to reset through the slide rods 47.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims of this invention, which are within the skill of those skilled in the art, be accomplished without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides an environment-friendly air insulation type switchgear, includes the cabinet body, cabinet body front side is equipped with the control panel, cabinet body rear side is equipped with the wiring room, cabinet body rear side upper end is equipped with the cavity of dispelling, its characterized in that: the cabinet is characterized in that cavities are formed in the left side and the right side of the cabinet body, through holes communicated with a wiring chamber are formed in the inner wall of the lower side of the cavity, sliding seals are arranged in the cavities, sliding blocks are arranged on the upper sides of the sliding blocks, first springs are arranged on the upper sides of the sliding blocks, a heat exchange cavity is arranged between the cavities, a discharge hole communicated with a discharge cavity is formed in the upper side of the heat exchange cavity, connecting holes communicated with the bottom of the heat exchange cavity are formed in the side wall of the cavity, a coiled pipe is arranged in the heat exchange cavity, a water storage tank is arranged on the rear side of the cabinet body, clear water is filled in the water storage tank, the input end of the coiled pipe is connected with the upper end of the water storage tank, the output end of the coiled pipe is communicated with the lower side of the water storage tank, a sliding plate is arranged in the water storage tank in a sliding seal mode, and a linkage mechanism is arranged between the sliding plate and the two sliding blocks.
2. An environmentally friendly air insulated switchgear as claimed in claim 1, wherein: the linkage mechanism comprises a mounting block arranged on the upper side of the water storage tank, an inner cavity is arranged in the mounting block, a rotating rod is rotationally assembled in the inner cavity, a reset assembly matched with the rotating rod is arranged on the outer surface of the mounting block, a through hole communicated with the water storage tank is formed in the inner wall of the lower side of the inner cavity, a stay wire penetrating through the through hole and connected with the sliding plate is fixedly connected to the outer surface of the rotating rod, and a limiting assembly is assembled between the two sliding blocks and the stay wire.
3. An environmentally friendly air insulated switchgear as claimed in claim 2, wherein: the reset assembly comprises a protective cover arranged on the outer surface of the installation block, the rotating rod rotates to extend into the protective cover, and a coil spring connected with the rotating rod is assembled in the protective cover.
4. An environmentally friendly air insulated switchgear as claimed in claim 3, wherein: the limiting assembly comprises a mounting cavity arranged on the upper side of the water storage tank, the through hole penetrates through the middle of the mounting cavity, second springs are arranged on the left side and the right side of the mounting cavity, clamping blocks matched with the pull wires are arranged at two ends, close to each other, of the second springs, and follow-up members are arranged between the clamping blocks and the two sliding blocks respectively.
5. An environmentally friendly air insulated switchgear as claimed in claim 4, wherein: the follow-up member comprises a pulling hole, two ends of the pulling hole are respectively communicated with the cavity and the mounting cavity, a telescopic rope is fixedly connected to the lower side of the sliding block, and the other end of the telescopic rope penetrates through the pulling hole and is fixedly connected with the clamping block.
6. An environmentally friendly air insulated switchgear as claimed in claim 5, wherein: the left and right sides of control panel all is equipped with the fixed strip, two the front end of fixed strip all is equipped with the protection gasbag, two the fixed strip all is equipped with the trachea with the protection gasbag intercommunication, two the trachea respectively with the upper end intercommunication of two cavitys.
7. An environmentally friendly air insulated switchgear as claimed in claim 1, wherein: the water pipe is arranged on the lower side of the water storage tank in a communicating way, and the water pipe is provided with an on-off valve.
8. An environmentally friendly air insulated switchgear as claimed in claim 1, wherein: slide bars are arranged on the left side and the right side of the slide plate, and the upper ends of the two slide bars are fixedly connected with limiting blocks which extend out of the water storage tank in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410252400.5A CN117833077B (en) | 2024-03-06 | 2024-03-06 | Environment-friendly air insulation type switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410252400.5A CN117833077B (en) | 2024-03-06 | 2024-03-06 | Environment-friendly air insulation type switch equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117833077A true CN117833077A (en) | 2024-04-05 |
| CN117833077B CN117833077B (en) | 2024-05-14 |
Family
ID=90524474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410252400.5A Active CN117833077B (en) | 2024-03-06 | 2024-03-06 | Environment-friendly air insulation type switch equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117833077B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB457877A (en) * | 1935-04-02 | 1936-12-02 | Gen Electric Co Ltd | Improvements in or relating to metal clad oil filled electric switches |
| CN111600232A (en) * | 2020-05-14 | 2020-08-28 | 中气电力装备有限公司 | Environment-friendly air insulation looped netowrk cabinet |
| CN217692313U (en) * | 2022-06-22 | 2022-10-28 | 广东其壹科技股份有限公司 | Totally-enclosed maintenance-free compact type network inflation switch cabinet |
-
2024
- 2024-03-06 CN CN202410252400.5A patent/CN117833077B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB457877A (en) * | 1935-04-02 | 1936-12-02 | Gen Electric Co Ltd | Improvements in or relating to metal clad oil filled electric switches |
| CN111600232A (en) * | 2020-05-14 | 2020-08-28 | 中气电力装备有限公司 | Environment-friendly air insulation looped netowrk cabinet |
| CN217692313U (en) * | 2022-06-22 | 2022-10-28 | 广东其壹科技股份有限公司 | Totally-enclosed maintenance-free compact type network inflation switch cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117833077B (en) | 2024-05-14 |
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