CN114389194A - Environment-friendly sealed air insulation ring main unit - Google Patents
Environment-friendly sealed air insulation ring main unit Download PDFInfo
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- CN114389194A CN114389194A CN202210066839.XA CN202210066839A CN114389194A CN 114389194 A CN114389194 A CN 114389194A CN 202210066839 A CN202210066839 A CN 202210066839A CN 114389194 A CN114389194 A CN 114389194A
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- isolating
- isolation
- isolation blade
- switch
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- 238000009413 insulation Methods 0.000 title claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 74
- 230000007613 environmental effect Effects 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 13
- 230000005684 electric field Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 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
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- 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
- H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
-
- 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
- H02B13/055—Features relating to the gas
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to an environment-friendly sealed air insulation ring main unit, which is characterized in that: comprises a switch cabinet frame; a switch unit mechanism; a vacuum arc-extinguishing chamber; an isolating switch mechanism; the isolating switch mechanism comprises an isolating shaft seat, isolating blades, an isolating blade seat and an isolating blade seat mounting seat, wherein the isolating shaft seat is provided with a main shaft and isolating blade supports, at least two isolating blade supports form a multi-station isolating switch, the main shaft and the isolating blade supports are integrally processed and formed, the main shaft is provided with two side movable ends, and the movable ends are movably mounted on the switch cabinet frame; the isolation blade is installed in each isolation blade support, the isolation blade moves synchronously along with the isolation blade supports, the isolation blade is provided with a stretching end, the stretching end serves as a movable contact end and is in contact with a wire outlet end of the vacuum arc extinguish chamber when the isolation blade supports are closed, two ends of each isolation blade support are installed on the switch cabinet frame and are located below the main shaft, the isolation blade holders are fixedly installed on the isolation blade holder supports, and the upper ends of the isolation blade holders are movably connected with the isolation blade. The structure of the scheme is reasonable in design, and green, small in size, safe and reliable are realized.
Description
Technical Field
The invention relates to the technical field of ring main units, in particular to an environment-friendly sealed air-insulated ring main unit.
Background
In view of environmental protection, one would generally think of reducing the emission of greenhouse gases, which is in fact only one of the many indicators of environmental protection. Environmental protection is a relative concept, and environmental protection switchgear needs to evaluate both the index for preventing global greenhouse effect and other environmental protection indexes, such as reducing or reducing the use of toxic and harmful substances, recycling material resources (such as reducing the use of thermosetting materials to the maximum extent), reducing the energy required for target activities (energy saving), reducing the weight and volume of products (saving materials and land), recycling after the nominal life of products, recycling treatment capacity and energy consumption of recycled substances, and other indexes of environmental impact in the whole life cycle of products. In addition, the environmental adaptability of the switchgear should be considered, which is mainly embodied in that the switchgear is not easily affected by the surrounding environment, including filth, damp heat, salt fog, high altitude, air pollution, and the like.
Since the 50 s of the 20 th century, medium-voltage switchgear has been developed in the stages of open type, box type, metal closed type and the like, no problem exists in meeting the functional use requirements of the switchgear, and products are already serialized and the use range is fully covered.
At present, although the environmental-friendly gas cabinet and the normal-pressure cabinet all-insulation ring main unit in the starting stage only occupy 10-15% of the current ring main unit market, the prospect is unlimited. Experts predict that in the next 5 years, the environment-friendly gas cabinet and the normal-pressure cabinet all-insulation ring main unit will become one of the mainstream products in the future environment-friendly market.
At present, the design of the switch equipment is still insufficient, and the design is still relatively deficient and unreasonable on the isolating switch, so that the service life is short.
The present invention is an improvement in view of the above problems.
Disclosure of Invention
The invention provides a design of an environment-friendly sealed air-insulated ring main unit with safety, reliability, miniaturization and environmental protection.
The technical scheme of the invention is realized as follows:
environmental protection sealing air insulation looped netowrk cabinet, its characterized in that: comprises that
The switch cabinet frame is provided with an installation accommodating cavity;
the switch unit mechanism is used as an incoming line connection control end;
the upper end of the vacuum arc extinguish chamber is connected with a switch unit mechanism and is used for quickly extinguishing arc after the power supply is cut off;
the isolating switch mechanism is connected with the lower end interface of the vacuum arc extinguish chamber;
the isolating switch mechanism comprises an isolating shaft seat, isolating blades, an isolating blade seat and an isolating blade seat mounting seat, wherein the isolating shaft seat is provided with a main shaft and isolating blade supports, at least two isolating blade supports form a multi-station isolating switch, the main shaft and the isolating blade supports are integrally machined and formed, the main shaft is provided with two side movable ends, and the movable ends are movably mounted on the switch cabinet frame;
the isolation blade is installed in each isolation blade support, the isolation blade moves synchronously along with the isolation blade supports, the isolation blade is provided with a stretching end, the stretching end serves as a movable contact end and is in contact with a wire outlet end of the vacuum arc extinguish chamber when the isolation blade supports are closed, two ends of each isolation blade support are installed on the switch cabinet frame and are located below the main shaft, the isolation blade holders are fixedly installed on the isolation blade holder supports, and the upper ends of the isolation blade holders are movably connected with the isolation blade.
Preferably, the isolating blade support of the isolating switch is provided with three isolating switches forming three stations, the isolating blade supports are designed in parallel at equal intervals, and the intervals of the isolating switches are larger than 125 mm.
Preferably, the outlet end of the vacuum arc-extinguishing chamber is used as a static contact end, the static contact end adopts a circular structure design, and the isolating blade is provided with a pressure equalizing cap.
Preferably, the isolation blade is divided into a left isolation blade and a right isolation blade, a contact port with two contact surfaces is formed between the left isolation blade and the right isolation blade, and the wire outlet end of the circular structure is in surface contact with the contact port.
Preferably, the left isolation blade and the right isolation blade are provided with isolation blade holes for installing a pressure equalizing cap, and the end part of the off-blade bracket is processed into a concave opening for being matched with the pressure equalizing cap.
Preferably, a plurality of reinforcing units are processed on the end face of the main shaft, and each reinforcing unit is formed by intersecting a plurality of criss-cross transverse plates.
Preferably, the isolating blade support is provided with reinforcing ribs, and the reinforcing ribs are distributed on the end face of the isolating blade support and extend to the end face of the main shaft to be integrally formed.
Preferably, a fully-sealed and fully-insulated stainless steel gas tank welded to form the gas tank is arranged outside the switch cabinet frame, and the gas tank adopts a three-dimensional appearance structure.
Preferably, switch cabinet frame bottom is provided with two cable chambers, and two adjacent settings of cable chamber, and both open and have the pressure release passageway, and one of them cable chamber locates the gas tank below.
According to the scheme, the method has the following characteristics:
(1) the static contact adopts circular design, keeps apart the blade and installs the pressure equalizing cap for electric field distribution is even, do not have more compound insulating, also can guarantee to arrange the distance and reach 125mm in the gas tank, satisfies good heat dissipation convection.
The distances among the normal-pressure switch, the isolation disconnecting link and the air gap at the fracture of the isolation disconnecting link are all larger than 125mm, and the requirements of the latest technical documents published by the south network in 2021 are completely met.
(2) The main shaft of the atmospheric-pressure sealed air-insulated circuit breaker cabinet adopts an integrated design-driven rotary isolating blade, the transmission gap is small, the synchronous and reliable ground-to-ground and isolating fracture distance of three-phase switching-on and switching-off is ensured, and the mechanical life is as long as 12000 times.
In conclusion, the beneficial effects of the invention are as follows:
the environmental protection air insulation looped netowrk cabinet that this scheme discloses, its structural design is reasonable, has realized green, small and safe and reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the whole environment-friendly sealed air-insulated ring main unit according to this embodiment.
Fig. 2 is a side view of the environmentally-friendly sealed air-insulated ring main unit shown in fig. 1.
Fig. 3 is a sectional view taken along a-a in fig. 2.
Fig. 4 is a schematic view of the entire disconnector mechanism.
Fig. 5 is a schematic view of pressure relief of the environment-friendly sealed air-insulated ring main unit.
Fig. 6 is a front view of fig. 5.
Fig. 7 is a schematic diagram of the electric field distribution at the position of the voltage-sharing cap.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 7 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1 to 7, the environmental protection sealing air insulation ring main unit disclosed in this embodiment is suitable for high altitude areas. The specific scheme is as follows:
the switch cabinet comprises a switch cabinet frame 1, wherein an installation accommodating cavity is formed in the switch cabinet frame;
a switch unit mechanism 2 as an incoming line connection control end;
the upper end of the vacuum arc extinguish chamber is connected with a switch unit mechanism and is used for rapidly extinguishing arc after the power supply is cut off;
the isolating switch mechanism 4 is connected with the lower end interface of the vacuum arc extinguish chamber;
referring to fig. 4, the isolating switch mechanism 4 includes an isolating shaft seat, an isolating knife, 7, an isolating knife holder 6 and an isolating knife holder mounting seat 5, the isolating shaft seat has a main shaft 4-1 and an isolating blade support 4-2, the isolating blade support 4-2 has at least more than two, forming a multi-station isolating switch, the main shaft and the isolating blade support are integrally formed, the main shaft has two side movable ends 10, the movable ends are movably mounted on the switch cabinet frame, the scheme is mounted on the switch cabinet frame through a shaft sleeve form, and the side movable ends 10 can rotate in the shaft sleeve.
The isolating blade 7 is installed in each isolating blade support 4-2, the isolating blade 7 moves synchronously along with the isolating blade support 4-2, namely the moving direction of the isolating blade support 4-2 is the direction of the isolating blade 7, the isolating blade 7 is provided with an extending end 7-2 which is used as a movable contact end and contacts with a wire outlet end of the vacuum arc-extinguishing chamber when closed, two ends of the isolating blade support are installed on the switch cabinet frame and are positioned below the main shaft 4-1, the isolating blade holder 6 is fixedly installed on the isolating blade holder support 5, the upper end of the isolating blade holder 6 is movably connected with the isolating blade, an isolating blade holder hole is mainly formed in the isolating blade holder 6, and the lower movable end 7-1 of the corresponding isolating blade 7 is used as a rotating fulcrum.
The main shaft of this scheme design with keep apart blade support integrated into one piece, solve the present not convenient problem of installation of keeping apart the blade and need installing at isolation blade support or main epaxial, the installation can be more complicated, can not realize the modular installation, lead to maintenance and the equal not very convenient of installation.
Meanwhile, the main shaft 4-1 of the atmospheric-pressure sealed air-insulated circuit breaker cabinet adopts the rotary isolating blade which is driven by the integrated design, the transmission gap is small, the synchronous and reliable ground-to-ground and isolating fracture distance of three-phase switching-on and switching-off is ensured, and the mechanical life is as long as 12000 times.
Compared with the existing normal-pressure ring main unit, the ring main unit of the environment-friendly ring main unit is smaller in size, and reasonable space utilization is achieved by reasonable arrangement of the internal space.
In order to provide the sealing performance and the reliability of the product, the following scheme is adopted for realizing: the switch cabinet frame is externally provided with a fully-sealed and fully-insulated stainless steel welded gas tank which adopts a three-dimensional appearance structure. The fully-sealed and fully-insulated stainless steel gas tank is welded, so that the use requirement in severe environment is met, and the maintenance is free; the gas box body is designed to be cubic, so that the number of corner welding seams is reduced, the welding quality is improved, and the grounding nut is welded at the bottom of the box body to ensure the grounding continuity; the drying air adopts industrial mixed gas: 19.5-23.5% oxygen; the balance being nitrogen. Oxygen: the purity is more than 99.5%; nitrogen gas: the purity is more than 99.999 percent; micro-water: less than 10 ppm. The gas emission is not influenced on the environment, the gas is not required to be recycled, and the green environmental protection is realized.
In order to make the structure more reliable, the isolation blade support of the isolation switch is provided with three isolation switches forming three stations, the isolation blade supports are designed in parallel at equal intervals, the operation is synchronous, errors are reduced, time delay is delayed, and safety is improved.
The outlet end of the vacuum arc extinguish chamber is used as a static contact end 8, the static contact end 8 adopts a circular structure design, and the isolating blade is provided with a pressure equalizing cap 9. The static contact end is used as a static contact and adopts a circular design, and the isolation blade is provided with a pressure equalizing cap, so that the electric field is uniformly distributed, the arrangement distance can be ensured to reach 125mm in an air box without more composite insulation, and good heat dissipation and convection are met. Preferably, the left isolation blade and the right isolation blade are provided with isolation blade holes used for installing a pressure equalizing cap, the end part of the left isolation blade and the end part of the right isolation blade are processed into a concave opening 4-2a used for being matched with the pressure equalizing cap, the pressure equalizing cap can be firmly limited in the concave opening 4-2a by the structure, the isolation blade can be accurately driven to move when the left isolation blade and the right isolation blade move from the blade support, and the movable matching part of the lower end of the isolation blade 7 and the isolation blade holder is taken as a fulcrum in the moving process.
Referring to fig. 7, the left-handed electric field is indicated by arrow C, and only turns around the grading hat ring, so that no discharge or creepage to the housing occurs.
For the contact reliability, the isolation blade 7 is divided into a left isolation blade and a right isolation blade, a contact port with two contact surfaces is formed between the left isolation blade and the right isolation blade, the wire outlet end of the circular structure is in surface contact with the contact port, and the contact reliability is ensured through a surface contact mode.
In order to further improve the overall strength of the isolating switch and prolong the service life of the isolating switch, preferably, a plurality of reinforcing units 4-3 are processed on the end face of the main shaft, each reinforcing unit is formed by intersecting a plurality of criss-cross transverse plates, and the specific structure is in a mesh shape, preferably, reinforcing ribs 4-2b are processed on the isolating blade bracket, and the reinforcing ribs are distributed on the end face of the isolating blade bracket and extend to the end face of the main shaft to be processed and integrally formed. The periphery of the isolation blade support is provided with the reinforcing ribs, so that the strength of each end face is ensured, and the firmness of the product is enhanced.
Two cable chambers 11, 12 are arranged at the bottom of the switch cabinet frame, the two cable chambers are arranged adjacently, and are provided with pressure relief channels 13, 14, wherein one cable chamber 11 is arranged below the air box to form a direct channel, and the pressure is relieved through the pressure relief channel 13 and the other cable chamber 12 by the pressure relief channel 14 below the cable chamber 12. Referring to fig. 6-7, the pressure relief mode is shown in the direction B, the cable chamber is designed to be backward and downward for pressure relief, and pressure relief of the cable chamber is realized by using the pressure relief channels 13 and 14 of the cable chamber, that is, the problem that no additional pressure relief mechanism channel is required at the rear end of the cabinet body is solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. Environmental protection sealing air insulation looped netowrk cabinet, its characterized in that: comprises that
The switch cabinet frame is provided with an installation accommodating cavity;
the switch unit mechanism is used as an incoming line connection control end;
the upper end of the vacuum arc extinguish chamber is connected with a switch unit mechanism and is used for quickly extinguishing arc after the power supply is cut off;
the isolating switch mechanism is connected with the lower end interface of the vacuum arc extinguish chamber;
the isolating switch mechanism comprises an isolating shaft seat, isolating blades, an isolating blade seat and an isolating blade seat mounting seat, wherein the isolating shaft seat is provided with a main shaft and isolating blade supports, at least two isolating blade supports form a multi-station isolating switch, the main shaft and the isolating blade supports are integrally machined and formed, the main shaft is provided with two side movable ends, and the movable ends are movably mounted on the switch cabinet frame;
the isolation blade is installed in each isolation blade support, the isolation blade moves synchronously along with the isolation blade supports, the isolation blade is provided with a stretching end, the stretching end serves as a movable contact end and is in contact with a wire outlet end of the vacuum arc extinguish chamber when the isolation blade supports are closed, two ends of each isolation blade support are installed on the switch cabinet frame and are located below the main shaft, the isolation blade holders are fixedly installed on the isolation blade holder supports, and the upper ends of the isolation blade holders are movably connected with the isolation blade.
2. The environmentally-friendly sealed air-insulated ring main unit according to claim 1, wherein: the isolation blade support of the isolation switch is provided with three isolation switches forming three stations, the isolation blade support is designed in parallel at equal intervals, and the intervals of the isolation switches are larger than 125 mm.
3. The environmental protection sealing air insulation ring main unit according to claim 1 or 2, wherein: the wire outlet end of the vacuum arc extinguish chamber is used as a static contact end, the static contact end adopts a circular structural design, and the isolating blade is provided with a pressure equalizing cap.
4. The environmentally-friendly sealed air-insulated ring main unit according to claim 3, wherein: the isolating blade is divided into a left isolating blade and a right isolating blade, a contact port with two contact surfaces is formed between the left isolating blade and the right isolating blade, and the wire outlet end of the circular structure is in surface contact with the contact port.
5. The environmental protection sealed air insulation ring main unit according to claim 4, wherein: the left isolation blade and the right isolation blade are provided with isolation blade holes for installing a pressure equalizing cap, and the end part of the isolation blade support is processed into a concave opening for being matched with the pressure equalizing cap.
6. The environmentally-friendly sealed air-insulated ring main unit according to claim 1, wherein: the end face of the main shaft is provided with a plurality of reinforcing units, and each reinforcing unit is formed by intersecting a plurality of criss-cross transverse plates.
7. The environmentally-friendly sealed air-insulated ring main unit according to claim 1, wherein: the isolating blade support is provided with reinforcing ribs which are distributed on the end face of the isolating blade support and extend to the end face of the main shaft to be integrally formed.
8. The environmentally-friendly sealed air-insulated ring main unit according to claim 1, wherein: the switch cabinet frame is externally provided with a fully-sealed and fully-insulated stainless steel welded gas tank which adopts a three-dimensional appearance structure.
9. The environmentally-friendly sealed air-insulated ring main unit according to claim 8, wherein: the switch cabinet frame bottom is provided with two cable chambers, and two adjacent settings of cable chamber, and both open and have the pressure release passageway, and gas tank below is located to one of them cable chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066839.XA CN114389194A (en) | 2022-01-20 | 2022-01-20 | Environment-friendly sealed air insulation ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066839.XA CN114389194A (en) | 2022-01-20 | 2022-01-20 | Environment-friendly sealed air insulation ring main unit |
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| Publication Number | Publication Date |
|---|---|
| CN114389194A true CN114389194A (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210066839.XA Pending CN114389194A (en) | 2022-01-20 | 2022-01-20 | Environment-friendly sealed air insulation ring main unit |
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| CN (1) | CN114389194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275855A (en) * | 2022-08-09 | 2022-11-01 | 黄华集团有限公司 | Air insulation looped netowrk cabinet |
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| CN205583511U (en) * | 2016-02-06 | 2016-09-14 | 北京清畅电力技术股份有限公司 | Environment -friendly gas switch cabinet |
| CN106953264A (en) * | 2017-04-05 | 2017-07-14 | 珠海航天科创实业有限公司 | A kind of environmentally friendly gas insulation switch cabinet |
| CN108258611A (en) * | 2018-02-08 | 2018-07-06 | 广东金晖隆开关有限公司 | A kind of environment-friendly type air insulated switch cabinet |
| CN109412067A (en) * | 2018-11-02 | 2019-03-01 | 北京双杰电气股份有限公司 | Environmentally friendly gas insulation switch cabinet |
| CN209150523U (en) * | 2018-12-15 | 2019-07-23 | 浙江绿丰电气有限公司 | A kind of environmental protection gas-insulated ring network cabinet |
| CN109637888A (en) * | 2018-12-17 | 2019-04-16 | 江苏大烨智能电气股份有限公司 | A kind of environmental-protective gas-insulating killer switch |
| CN210577371U (en) * | 2019-07-04 | 2020-05-19 | 米格电气江苏有限公司 | Environment-friendly gas insulation ring main unit |
| CN214044735U (en) * | 2020-11-26 | 2021-08-24 | 新机电器有限公司 | Environment-friendly insulated switch cabinet |
| CN214479039U (en) * | 2020-12-31 | 2021-10-22 | 珠海康晋电气股份有限公司 | Common-box type gas insulation switch cabinet |
| CN112886462A (en) * | 2021-03-16 | 2021-06-01 | 吉林省金冠电气股份有限公司 | Environment-friendly gas insulated switch |
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| CN115275855A (en) * | 2022-08-09 | 2022-11-01 | 黄华集团有限公司 | Air insulation looped netowrk cabinet |
| CN115275855B (en) * | 2022-08-09 | 2024-03-26 | 黄华集团有限公司 | Air insulation ring main unit |
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