CN112165017B - Totally closed looped netowrk cabinet of gas insulation - Google Patents
Totally closed looped netowrk cabinet of gas insulation Download PDFInfo
- Publication number
- CN112165017B CN112165017B CN202011101272.2A CN202011101272A CN112165017B CN 112165017 B CN112165017 B CN 112165017B CN 202011101272 A CN202011101272 A CN 202011101272A CN 112165017 B CN112165017 B CN 112165017B
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- China
- Prior art keywords
- main unit
- ring main
- gear
- looped netowrk
- netowrk cabinet
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- 238000009413 insulation Methods 0.000 title claims description 5
- 239000000428 dust Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 26
- 230000017525 heat dissipation Effects 0.000 abstract description 21
- 238000000034 method Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000004321 preservation Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a gas-insulated totally-enclosed ring main unit, which belongs to the technical field of ring main units and comprises an electric appliance chamber and a ring main unit body, wherein the electric appliance chamber is arranged inside the ring main unit body, a radiating fan is arranged inside a connecting groove, a pyramid-shaped ring main unit inner top is welded on the top of the ring main unit body, a built-in groove is formed between the ring main unit inner top and the ring main unit body, two ends of two sides and the back of the ring main unit inner top are connected with a first gear disc through supporting rods, a ring main unit outer top is fixed right above the ring main unit inner top, the ring main unit outer top is formed by mutually inclining and combining a first triangular outer top plate, a second triangular outer top plate, a third triangular outer top plate and a fourth triangular outer top plate, and push plates are fixed at the middle positions of two sides and the back of the ring main unit body through telescopic rods. The ring main unit has a good heat dissipation effect, sand on the top and the outer side of the ring main unit body can be removed conveniently, and the heat dissipation effect is improved.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to a gas-insulated fully-closed ring main unit.
Background
The ring main unit is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval ring main power supply unit, and the core part of the ring main unit adopts a load switch and a fuse. The transformer substation is widely used in distribution stations and box-type substations of load centers such as urban residential districts, high-rise buildings, large public buildings, factories and enterprises.
However, the ring main unit in northwest deserted and cool areas is influenced by wind and sand weather all the year round, and a layer of sand dust covers the top end of the outer surface of the ring main unit under the influence of the wind and sand weather, so that the sand dust has good heat preservation and heat insulation performance, and the sand dust covered on the outer surface of the ring main unit can prevent the ring main unit from dissipating heat in time in the working process of the ring main unit, thereby causing the equipment to fail to work normally.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a gas-insulated totally-enclosed ring main unit which has a good heat dissipation effect, is convenient for removing sand on the top and the outer side of a ring main unit body, and improves the heat dissipation effect.
2. Technical scheme
In order to solve the problems, the invention adopts the following technical scheme:
a gas insulation totally-enclosed ring main unit comprises an electric appliance chamber and a ring main unit body, wherein the electric appliance chamber is installed inside the ring main unit body, a connecting groove is formed in the middle position of the top of the ring main unit body, a cooling fan is installed inside the connecting groove, a pyramid-shaped ring main unit inner top is welded on the top of the ring main unit body, a built-in groove is formed between the ring main unit inner top and the ring main unit body, the built-in groove is communicated with the ring main unit body through the connecting groove, two sides and the back of the ring main unit inner top are connected with a first gear disc through supporting rods, a ring main unit outer top is fixed right above the ring main unit inner top and is formed by mutually inclining and combining a first triangular outer top plate, a second triangular outer top plate, a third triangular outer top plate and a fourth triangular outer top plate, the ring main unit outer top is of a pyramid structure, two ends of the bottom of the first triangular outer top plate, the second triangular outer top plate, the third triangular top plate and the fourth triangular outer top plate are respectively welded with a first right-angle gear disc, the other end of the first right-angle gear disc is welded with a second right-angle gear disc, the first right-angle gear disc and the second right-angle disc are respectively connected with the first right-angle disc, the second right-angle disc, the first right-angle disc and the second right-angle disc are welded with the second right-angle disc, the intermediate position department at looped netowrk cabinet body both sides and back all is fixed with the push pedal through the telescopic link, and the both sides at push pedal top all weld have with first toothed disc intermeshing's rack.
Preferably, the two sides of the front surface of the ring main unit body are hinged with closed doors.
Preferably, the first double gear, the first right-angle gear and the second double gear are formed by mutually welding an outer bevel gear and an inner worm gear, and the first double gear, the first right-angle gear, the second double gear, the inner worm gear, the second gear disc and the third gear disc are mutually meshed with the first gear discs connected with the two sides of the inner top and the back of the ring main unit.
Preferably, dust exhaust grooves are formed in the two sides and the back between the inner top and the outer top of the ring main unit.
Preferably, the inclined plane on the top all evenly seted up the bleeder vent in the looped netowrk cabinet, and install dustproof filter plate through the bolt on the inclined plane on the top in the looped netowrk cabinet outside the bleeder vent.
3. Advantageous effects
(1) The invention drives the rotating shaft on the third triangular outer top plate to rotate by the rotation of the driving motor, simultaneously utilizes the transmission effect among the gears, and drives the first triangular outer top plate, the second triangular outer top plate, the third triangular outer top plate and the fourth triangular outer top plate on the outer top of the ring main unit to rotate clockwise along the corresponding rotating shafts by the mutual meshing of the second double gears and the second right-angle gear, the mutual meshing of the second right-angle gear and the first double gears and the mutual meshing of the first double gears and the first right-angle gear, so that the top of the outer top of the ring main unit is opened, the first triangular outer top plate, the second triangular outer top plate, the third triangular outer top plate and the fourth triangular outer top plate are erected, sand falling into the inner part of the outer top of the ring main unit is removed, and the influence of the heat dissipation effect of the ring main unit body by the sand accumulated on the top of the outer top of the ring main unit is prevented, the efficiency of heat dissipation is improved, meanwhile, in the rotating process of the rotating shafts corresponding to the first triangular outer top plate, the second triangular outer top plate, the third triangular outer top plate and the fourth triangular outer top plate, the first double gears, the first right-angle gear, the second gear wheel disc, the third gear wheel disc and the second double gears which are arranged on the corresponding rotating shafts on the first triangular outer top plate, the second triangular outer top plate and the third triangular outer top plate can be meshed with the first gear wheel disc at the bottom of the corresponding surface of the first triangular outer top plate, the second triangular outer top plate and the third triangular outer top plate respectively so as to drive the first gear wheel disc to rotate, meanwhile, the push plates which are arranged on the corresponding surfaces (two sides and the back surface of the ring main body) are used, and racks which are meshed with the first gear wheel disc are fixed on the two sides of the top of the push plates so that the first gear wheel disc drives the push plates to expand outwards in the rotating process, will pile up the sand at looped netowrk cabinet body both sides and back and push away, prevent that the sand from piling up in looped netowrk cabinet body both sides and back and influencing the inside heat dissipation of looped netowrk cabinet body, convenient to use further improves the radiating effect of looped netowrk cabinet body, prevents that piling up of sand from to the inside heat preservation effect that causes of looped netowrk cabinet body.
(2) According to the invention, heat dissipated and floated by the electric appliance chamber is pumped into the built-in groove through the rotation of the cooling fan and is discharged out of the ring main unit body through the air holes, then the heat is discharged along with the position of the dust exhaust groove to enter the atmospheric environment for heat dissipation under the continuous work of the cooling fan, and meanwhile, in the process of opening the inside of the outer top of the ring main unit, the cooling fan continuously works to prevent a small amount of sand falling to the top of the inner top of the ring main unit in the opening process of the outer top of the ring main unit, so that the sand scattered to the inner top of the ring main unit is blown away through the continuous blowing effect of the cooling fan and is discharged from the position of the dust exhaust groove, thereby improving the dustproof effect of the top of the ring main unit and being convenient to use.
To sum up, on one hand, the top of the outer top of the ring main unit is opened through mutual transmission among the gears, so that sand accumulated on the top of the outer top of the ring main unit is pushed away, the influence of the top of the outer top of the ring main unit on the heat dissipation effect of the ring main unit body is prevented, the heat dissipation efficiency is improved, meanwhile, the push plates are expanded outwards, the sand accumulated on the two sides and the back of the ring main unit body is pushed away, the influence of the accumulation of the sand on the two sides and the back of the ring main unit body on the heat dissipation effect of the inner top of the ring main unit body is prevented, the use is convenient, the heat dissipation effect of the ring main unit body is further improved, on the other hand, heat in the ring main unit body is discharged through continuous work of the heat dissipation fan, the sand scattered on the inner top of the ring main unit is blown away, and the dustproof effect of the top of the inner top of the ring main unit is improved.
Drawings
FIG. 1 is a schematic view of the overall internal structure of the present invention;
FIG. 2 is a schematic view of the overall external structure of the present invention;
FIG. 3 is a schematic view of the top view of the ring main unit according to the present invention;
FIG. 4 is a schematic diagram of the push plate transmission structure of the present invention.
Reference numerals: 1. a dust exhaust groove; 2. air holes are formed; 3. a dustproof filter plate; 4. a heat radiation fan; 5. the ring main unit is arranged on the inner top; 6. connecting grooves; 7. the ring main unit is arranged on the outer top; 8. a built-in groove; 9. a rotating shaft; 10. a first gear plate; 11. a rack; 12. a telescopic rod; 13. pushing the plate; 14. an electric appliance chamber; 15. a ring main unit body; 16. a closing door; 17. a first triangular outer roof panel; 18. a second triangular outer roof panel; 19. a third triangular outer roof panel; 20. a fourth triangular outer roof panel; 21. a first double gear; 22. a first right angle gear; 23. a second gear wheel; 24. a drive motor; 25. a third gear plate; 26. a second double gear; 27. a second right angle gear.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
A gas insulated, totally enclosed ring main unit as shown in fig. 1-4, comprising an electric appliance chamber 14 and a ring main unit 15, the electric appliance chamber 14 is installed inside the ring main unit 15, a connecting groove 6 is provided in the middle of the top of the ring main unit 15, a heat dissipating fan 4 is installed inside the connecting groove 6, a ring main unit inner top 5 in a pyramid shape is welded on the top of the ring main unit 15, an inner groove 8 is provided between the ring main unit inner top 5 and the ring main unit 15, the inner groove 8 is communicated with the ring main unit 15 via the connecting groove 6, both ends of both sides and the back of the ring main unit inner top 5 are connected to a first gear plate 10 via a support rod, an outer ring main unit top 7 is fixed right above the ring main unit inner top 5, the ring main unit outer top 7 is formed by welding a first triangular outer top plate 17, a second triangular outer top plate 18, a third triangular outer top plate 19 and a fourth triangular outer top plate 20 to each other, the first triangular top plate 17, a second triangular outer top plate 18, a third triangular top plate 19 and a fourth triangular top plate 20 are welded to the second triangular top plate 21, a motor outer gear plate 21 and a motor outer rotating shaft 25 are welded to the other end of the ring main unit, and a third triangular top plate 21 are respectively, the second right-angle gear 27 is meshed with the first double-gear 26 and the second double-gear 21 respectively, push plates 13 are fixed at the middle positions of two sides and the back of the ring main unit body 15 through telescopic rods 12, racks 11 meshed with the first gear disc 10 are welded on two sides of the top of each push plate 13, the closed door 16 is hinged on two sides of the front of the ring main unit body 15, the first double-gear 21, the first right-angle gear 22 and the second double-gear 26 are welded with the inner turbine through outer bevel gears, the first double-gear 21, the first right-angle gear 22, the inner turbine of the second double-gear 26, the second gear disc 23 and the third gear disc 25 are meshed with the first gear disc 10 connected with two sides and the back of the ring main unit inner top 5, dust exhaust grooves 1 are formed in two sides and the back between the ring main unit inner top 5 and the ring main unit outer top 7, air vents 2 are uniformly formed in the inclined surface of the ring main unit inner top 5, and dust prevention filter plates 3 are mounted on the inclined surface of the ring main unit inner top 5 outside the air vents 2 through bolts.
The specific action principle of the gas-insulated totally-enclosed ring main unit is as follows:
firstly, a ring main unit body 15 is installed in a sandy weather area, such as the Gobi area in northwest of China, then in the using process of the ring main unit body 15, an external power supply provides electric support for a heat radiation fan 4 and a driving motor 24, the ring main unit outer top 7 is in a closed state in an initial state, then heat dissipated and floated by an electric appliance chamber 14 is pumped into the interior of an embedded groove 8 through a vent hole 2 to be discharged out of the ring main unit body 15 through the rotation of the heat radiation fan 4, then under the continuous work of the heat radiation fan 4, the heat is discharged into the atmosphere environment along with the position of a dust discharge groove 1 to be dissipated, when the sandy weather occurs, because the top of the ring main unit body 15 is covered by the ring main unit outer top 7, the ring main unit body 15 is relatively in a sealed state, sand cannot enter the ring main unit body 15, and is accumulated on the top of the ring main unit outer top 7 and the outer side of the ring main unit body 15, thereby wrapping the ring main unit 15, accumulating sand outside the ring main unit 15, and performing a heat preservation effect on the inside of the ring main unit 15, so that the heat inside the ring main unit 15 cannot be dissipated, and a short circuit of an internal circuit of the electric appliance chamber 14 is easily caused, thereby driving the rotating shaft 9 on the third triangular outer top plate 19 to rotate by the rotation of the driving motor 24, and simultaneously driving the first triangular outer top plate 17, the second triangular outer top plate 18, the third triangular outer top plate 19 and the fourth triangular outer top plate 20 on the ring main unit outer top 7 to rotate clockwise along the corresponding rotating shafts 9 by the mutual meshing of the second double gear 26 and the second right gear 27, the mutual meshing of the second right gear 27 and the first double gear 21, and the mutual meshing of the first double gear 21 and the first right gear 22 by using the transmission effect between the gears, the top of the ring main unit outer top 7 is opened, the first triangular outer top plate 17, the second triangular outer top plate 18, the third triangular outer top plate 19 and the fourth triangular outer top plate 20 are erected, sand falling into the ring main unit outer top 7 is removed, the influence of sand accumulated on the top of the ring main unit outer top 7 on the heat dissipation effect of the ring main unit body 15 is prevented, and the heat dissipation efficiency is improved, meanwhile, in the rotating process of the rotating shaft 9 corresponding to the first triangular outer top plate 17, the second triangular outer top plate 18, the third triangular outer top plate 19 and the fourth triangular outer top plate 20, the first double gear 21, the first right-angle gear 22, the second gear disc 23, the third gear disc 25 and the second double gear 26 which are respectively arranged on the rotating shaft 9 corresponding to the first triangular outer top plate 17, the second triangular outer top plate 18 and the third triangular outer top plate 19 can be meshed with the first gear discs 10 at the corresponding bottom of the first triangular outer top plate 17, the second triangular outer top plate 18 and the third triangular outer top plate 19, thereby driving the first gear wheel 10 to rotate, and simultaneously, through the push plate 13 arranged on the corresponding surface (two sides and the back of the ring main unit body 15) and the rack 11 mutually engaged with the first gear wheel 10 fixed on both sides of the top of the push plate 13, the first gear wheel 10 drives the push plate 13 to expand outwards in the rotating process, and pushes away the sand accumulated on both sides and the back of the ring main unit body 15, thereby preventing the sand from accumulating on both sides and the back of the ring main unit body 15 to influence the heat dissipation inside the ring main unit body 15, the use is convenient, the heat dissipation effect of the ring main unit body 15 is further improved, the heat preservation effect caused by the accumulation of the sand on the inside of the ring main unit body 15 is prevented, and simultaneously, in the process of opening the inside of the ring main unit outer top 7, the work that radiator fan 4 lasts prevents that the outer top 7 of looped netowrk cabinet from dropping on to the top at the 5 in the looped netowrk cabinet in a small amount of sands of in-process of opening to through radiator fan 4's the effect of blowing continuously, blow away the sand that scatters on the 5 in the looped netowrk cabinet, and discharge from dust exhaust groove 1 position department, thereby improved the dustproof effect at 5 tops in the looped netowrk cabinet, convenient to use.
From the above, on one hand, according to the dustproof ring main unit, the top of the ring main unit outer top 7 is opened through mutual transmission among the gears, so that sand accumulated on the top of the ring main unit outer top 7 is pushed away, the influence of the sand accumulated on the top of the ring main unit outer top 7 on the heat dissipation effect of the ring main unit body 15 is prevented, the heat dissipation efficiency is improved, meanwhile, the push plate 13 expands outwards, the sand accumulated on the two sides and the back of the ring main unit body 15 is pushed away, the influence of the sand accumulated on the two sides and the back of the ring main unit body 15 on the heat dissipation effect of the ring main unit body 15 is prevented, the use is convenient, the heat dissipation effect of the ring main unit body 15 is further improved, on the other hand, heat in the ring main unit body 15 is discharged through continuous work of the cooling fan 4, the sand scattered on the ring main unit inner top 5 is blown away, and the dustproof effect on the top of the ring main unit inner top 5 is improved.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (4)
1. The utility model provides a totally closed looped netowrk cabinet of gas insulation, its characterized in that includes electric appliance room (14) and looped netowrk cabinet body (15), the internally mounted of looped netowrk cabinet body (15) has electric appliance room (14), intermediate position department at looped netowrk cabinet body (15) top has seted up spread groove (6), and the internally mounted of spread groove (6) has radiator fan (4), the top welding of looped netowrk cabinet body (15) has looped netowrk cabinet inner roof (5) that is the pyramid form, and has seted up built-in groove (8) between looped netowrk cabinet inner roof (5) and looped netowrk cabinet body (15), communicate each other through spread groove (6) between built-in groove (8) and looped netowrk cabinet body (15), the both ends at looped netowrk cabinet inner roof (5) both sides and back all are connected with first toothed disc (10) through the branch, be fixed with outer roof (7) of looped netowrk cabinet directly over (5), outer roof (7) of looped netowrk cabinet is fixed with outer roof (7) by outer triangle-shaped roof (17), second triangle-shaped outer roof (18), third triangle-shaped outer roof (19) and fourth triangle-shaped outer roof (19) and the outer triangle-roof (17), the outer triangle-shaped roof (17) and the outer corner joint structure of the outer triangle-shaped hinge outer of the looped netowrk cabinet, and the outer corner joint of ring main unit (9) and the outer corner joint of the ring main unit (17), the other ends of the rotating shafts (9) at the two ends of the first triangular outer top plate (17) are respectively welded with a first double gear (21), the other ends of the rotating shafts (9) at the two ends of the second triangular outer top plate (18) are respectively welded with a first right-angle gear (22) and a second gear disc (23), the first right-angle gear (22) is meshed with the first double gear (21), the other ends of the rotating shafts (9) at the two ends of the third triangular outer top plate (19) are respectively welded with a second double gear (26) and a third gear disc (25), a driving motor (24) is installed at the top of the ring main unit outer top (7) at the outer side of the third gear disc (25), the output end of the driving motor (24) is connected with the third gear disc (25), the other ends of the rotating shafts (9) at the two ends of the fourth triangular outer top plate (20) are respectively welded with a second right-angle gear (27), the second right-angle gear (27) is meshed with the second double gear (26) and the second double gear (21), the middle positions of the two sides of the ring main unit body (15) and the back are respectively welded with a push plate (13), and the two push plates (13) are respectively meshed with the two racks (11);
the first double gear (21), the first right-angle gear (22) and the second double gear (26) are formed by mutually welding an outer bevel gear and an inner turbine, and the first double gear (21), the first right-angle gear (22), the inner turbine of the second double gear (26), the second gear disc (23) and the third gear disc (25) are mutually meshed with the first gear discs (10) connected with the two sides and the back of the inner top (5) of the ring main unit.
2. A totally enclosed gas insulated ring main unit as claimed in claim 1, wherein the ring main unit body (15) is hinged with a closing door (16) on both sides of the front surface.
3. The gas-insulated fully-closed ring main unit according to claim 1, wherein dust exhaust grooves (1) are formed in both sides and the back between the ring main unit inner top (5) and the ring main unit outer top (7).
4. A gas insulated full-closed ring main unit as claimed in claim 1, wherein the inclined surface of the ring main unit inner top (5) is uniformly provided with air holes (2), and the inclined surface of the ring main unit inner top (5) outside the air holes (2) is provided with a dustproof filter plate (3) by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101272.2A CN112165017B (en) | 2020-10-10 | 2020-10-10 | Totally closed looped netowrk cabinet of gas insulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101272.2A CN112165017B (en) | 2020-10-10 | 2020-10-10 | Totally closed looped netowrk cabinet of gas insulation |
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| Publication Number | Publication Date |
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| CN112165017A CN112165017A (en) | 2021-01-01 |
| CN112165017B true CN112165017B (en) | 2022-11-08 |
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| CN202011101272.2A Active CN112165017B (en) | 2020-10-10 | 2020-10-10 | Totally closed looped netowrk cabinet of gas insulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107508367A (en) * | 2017-08-25 | 2017-12-22 | 烟台宇诚企业管理咨询有限公司 | A kind of intelligence suitable for scenic spot is taken shelter from the rain booth |
| CN107946959B (en) * | 2017-12-20 | 2019-07-05 | 高原(山东)机电设备有限公司 | A kind of outdoor rainproof snow distribution box cabinet |
| CN207834998U (en) * | 2018-03-06 | 2018-09-07 | 北京新网长千科技有限公司 | A kind of terminal box complete set of protective apparatus |
| CN208210544U (en) * | 2018-05-03 | 2018-12-07 | 佳律通信设备(上海)有限公司 | A kind of communication repeater station being moved easily |
| CN209766970U (en) * | 2019-04-27 | 2019-12-10 | 江苏俱进投资有限公司 | snow-accumulation-preventing low-voltage power distribution cabinet |
| CN210041078U (en) * | 2019-07-23 | 2020-02-07 | 南京健顺电器控制设备有限公司 | Outdoor prepackage type transformer substation |
| CN210224660U (en) * | 2019-08-28 | 2020-03-31 | 九江光辉电力科技有限公司 | Switch board top cap with pressure release function |
| CN110797777B (en) * | 2019-12-13 | 2020-06-05 | 浦江乐程电子科技有限公司 | Special installation box for electric switch control cabinet |
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Denomination of invention: A gas insulated fully enclosed ring main unit Granted publication date: 20221108 Pledgee: Bank of Communications Co.,Ltd. Zaozhuang Branch Pledgor: Shandong Dingsheng Electrical Equipment Co.,Ltd. Registration number: Y2024980004804 |