CN107800068B - Environment-friendly gas-insulated switchgear - Google Patents
Environment-friendly gas-insulated switchgear Download PDFInfo
- Publication number
- CN107800068B CN107800068B CN201711211834.7A CN201711211834A CN107800068B CN 107800068 B CN107800068 B CN 107800068B CN 201711211834 A CN201711211834 A CN 201711211834A CN 107800068 B CN107800068 B CN 107800068B
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- Prior art keywords
- switch
- isolating
- contact
- fixed
- claw
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000003068 static effect Effects 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000002955 isolation Methods 0.000 claims description 33
- 210000000078 claw Anatomy 0.000 claims description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 230000008033 biological extinction Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 2
- 238000010125 resin casting Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000243 solution Substances 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
- 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
- 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
- H02B13/075—Earthing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The environment-friendly gas-insulated switchgear comprises a two-station isolating switch, a small vacuum environment-friendly switch, a fuse cabin and an isolating switch observation device. The two-station isolating switch is mainly assembled by an isolating static bracket, an isolating blade, a vacuum arc-extinguishing chamber static contact, an insulating pull rod and an isolating main shaft. The small vacuum environment-friendly switch is mainly assembled by a solid sealing pole, a contact seat, a main shaft pull rod and an operating mechanism. The moving contact of the vacuum arc-extinguishing chamber passes through the groove and contacts with the gauge chain contact finger. The fuse cabin is mainly assembled by a cabin body, a fuse, a 5-claw, an 8-claw and an insulating sealing plug. The invention has reasonable design, relatively simple manufacturing process, small volume, light weight, stable performance, reliable action and extremely high electrical safety performance, is a powerful guarantee of power supply reliability and is a precondition for reducing user investment.
Description
Technical Field
The invention relates to medium-voltage switch equipment for a power system, in particular to an environment-friendly gas-insulated switchgear, which is load switch-fuse combined electrical equipment controlled by a load switch and protected by a fuse.
Background
The switch cabinet is one of key equipment in the power supply industry, the load switch-fuse combined electrical appliance is particularly important as protection equipment of a 10kV transformer, in the prior art, SF 6 gas is mainly used as arc extinguishing and insulating gas, SF 6 is an environment-friendly gas with extremely strong greenhouse effect, and the environment-friendly gas can be decomposed into toxic products under the action of high-temperature electric arcs, so that the environment-friendly gas is not suitable for the development requirements of the modern power industry.
Disclosure of Invention
Aiming at the problems that the current power system switch is large in size, poor in safety performance, serious pollution to the environment is caused by using SF 6 gas for arc extinction and insulation, poor in expandability, inconvenient to install, poor in reliability, certain economic losses are caused to the country and electricity users by increasing the manufacturing cost and the operation maintenance cost, and the like, the invention provides the environment-friendly gas insulated switch cabinet which is compact in structure, small in size, low in operation maintenance cost, convenient to combine and capable of obviously reducing the investment of electric facilities.
The above object of the present invention is achieved by the following technical solutions:
An environment-friendly gas-insulated switchgear comprises a two-station isolating switch, a small vacuum environment-friendly switch, a fuse cabin, an outlet terminal, a grounding switch, an operating mechanism, a stainless steel sealed gas tank, a switchgear body, an isolating switch observation device and the like.
The two-station isolating switch comprises an isolating static support, an isolating blade, a vacuum arc-extinguishing chamber static contact, an insulating pull rod, an isolating main shaft and a grounding tool apron.
The isolation static support is formed by casting epoxy resin, the upper part of the isolation static contact is cast in the isolation static support, and the isolation static support is fixed on the frame.
One end of the isolation blade is connected with the fixed contact of the vacuum arc-extinguishing chamber, one end of the insulation pull rod is connected with the pulling hole, the other end of the insulation pull rod is connected with the isolation main shaft through a crank arm, the isolation main shaft is guaranteed to be brought to the isolation blade to conduct split and close actions when rotating, the isolation main shaft is fixed on the front mounting plate and the rear mounting plate through the isolation bearing seat, the isolation blade is two groups, the isolation fixed contact is guaranteed to be placed between the two isolation blades after being mounted, two groups of butterfly springs are adopted on one side of the isolation blade, and the isolation blade and the fixed contact of the vacuum arc-extinguishing chamber and the reliable contact of the isolation blade and the isolation fixed contact are guaranteed.
The grounding tool apron is fixed on the frame.
The small vacuum environment-friendly switch comprises a solid sealing pole, a contact seat, a main shaft pull rod and an operating mechanism, wherein the switch is welded on a fixed frame through front and rear mounting plates, the switch is fixed on a mounting hole of a stainless steel metal sheet through the fixed frame, the sealing of an air box and the stability of the switch are guaranteed, the solid sealing pole is fixed on a mounting beam, the mounting beam is connected with the front and rear mounting plates, the contact seat is fixed on the solid sealing pole, a gauge chain contact finger is arranged in a groove of the contact seat, a moving contact of a vacuum arc extinguishing chamber penetrates through the groove, and the moving contact is tightly contacted with the gauge chain contact finger.
The fuse cabin include the cabin body, the fuse, 5 claw, 8 claw, insulating seal, 5 claw is through the bolt fastening in the cabin body, adopts stainless steel spring to tighten the claw, guarantees the reliable contact of claw and fuse, 8 claw passes through the bolt fastening on insulating seal, adopts the opening steel ring to install the inboard at outer claw, guarantees the reliable contact of outer claw and the internal conductive clip in cabin, adopts the binding clasp to tighten interior claw, guarantees the reliable contact of claw and fuse.
The outgoing line terminal is formed by casting epoxy resin, a conductive column is cast in the outgoing line terminal, and a sealing groove is designed on the body of the outgoing line terminal, so that the air tightness of the air box is ensured during installation of the outgoing line terminal.
The grounding switch is in an independent structural form, is fixed in the air box in a welding mode, is designed to be provided with a sealing device at the connecting part with the air box, ensures the air tightness of the air box, realizes the opening and closing operation of the grounding switch in a mechanism room, and drives the transmission pull rod to enable the grounding switch in the air box to perform opening and closing actions through the transmission crank arm.
The operating mechanism is a spring operating mechanism or a permanent magnet mechanism.
The isolating switch observation device consists of an imaging probe and a handheld display screen.
Principle and working procedure of environment-friendly gas-insulated switchgear:
The general assembly structure of the environment-friendly gas-insulated switchgear is shown in figure 1. The stainless steel sheet metal is welded into a closed air box, a frame formed by the sheet metal forms a pressure relief channel, and an instrument room, a mechanism room and a cable room are formed by a baffle plate, a side plate and the like.
The stainless steel sealed gas tank internally provided with a two-station isolating switch, a fixed small vacuum environment-friendly switch, a fuse cabin, a grounding switch and a connecting bus, wherein the wire outlet terminal part with a cable is arranged outside the gas tank, and the wire outlet terminal is hermetically connected with the gas tank through a sealing rubber ring, so that the gas tightness of the gas tank is ensured. The pressure relief explosion-proof valve is arranged at the lower part of the air box. The front part of the air box is provided with an air pressure gauge for displaying the pressure of the air box and an observation window for observing the station of the isolating switch.
The frame formed by the metal sheets forms a pressure relief channel, and is used for releasing unexpected electric arcs generated by elements in the gas tank into the pressure relief channel through a pressure relief explosion-proof valve at the lower part of the gas tank and also used for releasing the fault electric arcs generated in the cable chamber.
An operating mechanism is arranged in the mechanism chamber and used for operating the load switch, the two-station isolating switch and the grounding switch, and the instrument chamber is arranged at the upper part of the mechanism chamber and used for installing the secondary element.
An outgoing terminal is arranged in the cable chamber and connected with an incoming and outgoing cable, and a through type current transformer and a plug-in type lightning arrester can be installed in the cable chamber.
The working principle of the environment-friendly gas-insulated switchgear can be divided into two cases of wire inlet and wire outlet of the wire outlet terminal, and the working principle is described by taking the wire outlet terminal as an example. When current flows through the isolating switch from the main bus, if the isolating switch is in a closing state (namely, the isolating blade is jointed with the isolating static contact), the current passes through the vacuum arc-extinguishing chamber (closing state) and is transmitted to the contact base, then flows through the fuse cabin through the lower leading-in bus, and is transmitted to the outlet terminal under the condition that the fuse is connected, and the cable head connected with the outlet terminal transmits the current to the external cable to complete the transmission process.
When the working procedure of the environment-friendly gas-insulated switchgear requires the control loop to have a power failure, the power failure can be completed only by separating the vacuum arc extinguishing chamber through the control mechanism and then separating the disconnecting switch blade to a separated position; when the control loop is required to be powered off and overhauled, the grounding blade of the grounding switch can be closed to the closing position after the power off process is finished, and the set requirement can be finished. The power delivery procedure is the reverse of the power outage procedure.
The invention is characterized in that:
1. the environment-friendly gas-insulated switchgear adopts an environment-friendly air sealing technology, is not influenced by the surrounding environment in operation, is not influenced by condensation and pollution, and has no toxic and harmful gas and no toxic and harmful gas.
2. The grounding tool apron can be matched at will according to requirements, namely the isolating switch is divided into an isolating position and an isolating position, and the isolating position and the grounding position are combined.
2. The invention adopts compressed air as an insulating medium and adopts vacuum to carry out arc extinction.
3. The connection positions of the isolating main shaft and the switch main shaft and the front end plate of the gas tank are sealed, so that the gas tightness of the sealed gas tank is ensured.
4. The invention fixes the small vacuum environment-friendly switch on the frame, and ensures that the stability of the switch is not affected by the deformation of the box body when the air is inflated.
5. Insulating parts such as the cabin body and the outlet terminal are manufactured by adopting epoxy resin with good hydrophobicity, and the insulating parts are molded by one-step casting through an APG (advanced plastic injection) epoxy injection technology, so that the risk of leakage of harmful gas and liquid is avoided, and the environment is not polluted.
6. The grounding switch adopts a gear transmission operation mode, so that the switch is convenient and quick in the operation process.
7. The imaging probe is provided with an illuminating lamp, so that the position of the isolating switch can be clearly observed in the closed gas tank, and the handheld display screen can be connected with a power supply for use or can be charged for use.
8. The A, B, C main bus bars of the invention are longitudinally arranged at the back, middle and front.
The invention has reasonable design, relatively simple manufacturing process, small volume, light weight, stable performance and reliable action, has extremely strong practicability in the aspect of economy and electric product application, has extremely high electric safety performance, is a powerful guarantee of power supply reliability and is a precondition for reducing user investment.
It should be noted that: changes or modifications made without changing the principle and the conception of the present invention are all within the scope of the present invention.
Drawings
Fig. 1 is a side view of the environmentally friendly gas insulated switchgear of the present invention.
Fig. 2 is a top view of the environment-friendly gas-insulated switchgear of the present invention.
Fig. 3 is a side view of the miniature vacuum environment-friendly switch of the invention.
Figure 4 is a cross-sectional view of the fuse compartment of the present invention.
Fig. 5 is a schematic diagram of the grounding switch of the present invention.
Fig. 6 is a schematic diagram of an observation device for an isolating switch according to the invention.
Detailed Description
The utility model provides an environmental protection gas-insulated switchgear, includes two station isolator, small-size vacuum environment-friendly switch, fuse cabin, wire outlet terminal, earthing switch, operating device, stainless steel seal gas tank, switch cabinet body and isolator observation device, installs at the internal settlement position of cabinet according to the designing requirement, its characterized in that:
the two-station isolating switch A, B, C is installed in three phases and comprises an isolating static support 1, an isolating blade 2, a vacuum arc-extinguishing chamber static contact 3, an insulating pull rod 4, an isolating main shaft 5 and a grounding tool apron 6.
The isolation static support 1 is formed by casting epoxy resin, and the upper end of the isolation static contact 7 is cast in the epoxy resin, so that the isolation static support 1 and the isolation static contact 7 are of an integral structure, and are firm and durable. The isolation static support 1 is fixed on the frame 8. The isolating blades 2 are of a two-piece one-group structure, and the lower ends of the isolating static contacts 7 are arranged between the two isolating blades 2. One end of the isolating blade 2 is connected with the fixed contact 3 of the vacuum arc-extinguishing chamber, one end of the insulating pull rod 4 is connected with the pulling hole, and the other end of the insulating pull rod 4 is connected with the isolating spindle 5 through the crank arm 9, so that the isolating spindle 5 can be driven to perform the opening and closing actions when rotating. The two ends of the isolation spindle 5 are supported by bearings in isolation bearing blocks 10 fixed to front and rear mounting plates 11, respectively. Two groups of belleville springs 12 are arranged on one side of the isolating blade 2 and used for ensuring reliable contact between the isolating blade 2 and the vacuum arc-extinguishing chamber fixed contact 3 and between the isolating blade 2 and the isolating fixed contact 7.
The grounding tool apron 6 can be matched at will according to requirements, namely, the isolating switch is divided into an isolating position and an isolating position, and the isolating position and the grounding position are combined.
The grounding tool holder 6 is fixed on the frame 8.
The small vacuum environment-friendly switch comprises a solid sealing pole 13, a contact seat 14, a main shaft pull rod 15 and an operating mechanism 16. The small-sized vacuum environment-friendly switch is welded on the frame 8 through the front mounting plate 11 and the rear mounting plate 11, and is fixed on the mounting holes of the stainless steel metal sheet through the frame 8, so that the sealing of the air box and the stability of the switch are ensured, the solid sealing pole 13 is fixed on the mounting beam 18, and two ends of the mounting beam 18 are respectively connected with the front mounting plate 11 and the rear mounting plate 11. The contact base 14 is fixed on the solid-sealed polar pole 13, the gauge chain contact finger is arranged in the groove of the contact base 14, the moving contact 20 of the vacuum arc-extinguishing chamber passes through the groove, and the moving contact 20 is contacted with the gauge chain contact finger.
The fuse cabin comprises a cabin body 21, a fuse 22, a 5-claw 23, an 8-claw 24 and an insulating sealing plug 25. The 5 claw 23 is fixed in the cabin 21 through the bolt, adopts stainless steel spring to tighten the 5 claw 23, guarantees the reliable contact of 5 claw 23 and fuse 22, and the 8 claw 24 is fixed on insulating seal 25 through the bolt, adopts the opening steel ring to install in the inboard of outer claw, guarantees the reliable contact of outer claw and the conductive clip 27 in the cabin 21, adopts the binding clasp to tighten the interior claw, guarantees the reliable contact of 8 claw 24 and fuse 22.
The outgoing line terminal 29 is formed by casting epoxy resin, a conductive column 30 is cast in the outgoing line terminal, and a sealing groove is designed on the body of the outgoing line terminal 29, so that the air tightness of the air box is ensured when the outgoing line terminal 29 is installed.
The grounding switch 31 is in an independent structural form, is fixed in a stainless steel sealing air box in a welding mode, is provided with a sealing device at the connecting part with the air box, ensures the air tightness of the air box, realizes the opening and closing operation of the grounding switch 31 in a mechanism room, and drives the transmission pull rod 33 to pull the grounding switch 31 to perform opening and closing actions through the transmission crank arm 32.
The operating mechanism 16 is a spring operating mechanism or a permanent magnet mechanism, which is known in the art.
The isolating switch observation device consists of an imaging probe 34 and a handheld display screen 35.
And the compressed air is used as an insulating medium, and vacuum is adopted for arc extinction.
The small vacuum environment-friendly switch is fixed on the frame 8, so that the stability of the switch is not affected by deformation of the box body during inflation.
The grounding switch adopts a gear transmission operation mode, so that the switch is convenient and quick in the operation process.
The imaging probe 34 is provided with an illuminating lamp 36, so that the position of the isolating switch can be clearly observed in the closed air box, and the handheld display screen 35 can be connected with a power supply for use or for charging use.
The fuse cabin is arranged on the fuse frame and welded on the box body, and a hatch of the fuse cabin, which is positioned on the outer side of the box body, is tightly covered by adopting an insulating sealing plug.
The wire outlet terminal is arranged on the box body, the part on the inner side of the box body is fixed with the fuse connecting row by bolts, the part on the outer side of the box body is used for connecting a wire inlet cable and a wire outlet cable, and a sealing ring is designed at the contact part with the box body, so that the air tightness of the air box is ensured.
Claims (5)
1. The utility model provides an environmental protection gas-insulated switchgear, includes two station isolator, small-size vacuum environment-friendly switch, fuse cabin, outlet terminal (29), earthing switch (31), operating device, stainless steel seal gas tank, switch cabinet body, isolator observation device, its characterized in that:
the two-station isolating switch A, B, C is installed in three phases respectively and comprises an isolating static support (1), an isolating blade (2), a vacuum arc-extinguishing chamber static contact (3), an insulating pull rod (4), an isolating main shaft (5) and a grounding tool apron (6); the grounding tool apron (6) is fixed on the frame (8); the isolation static support (1) is an epoxy resin casting body, and the upper end of the isolation static contact (7) is cast in the isolation static support (1) and is of an integral structure with the isolation static support (1); the isolation static support (1) is fixed on the frame (8); the isolating blades (2) are two-piece in one group, and the lower end of the isolating static contact (7) is arranged between the two isolating blades (2); one end of the isolation blade (2) is connected with the fixed contact (3) of the vacuum arc-extinguishing chamber, one end of the insulation pull rod (4) is connected with the pulling hole, and the other end of the insulation pull rod (4) is connected with the isolation main shaft (5) through the crank arm (9); two ends of the isolation main shaft (5) are respectively supported by bearings in isolation bearing seats (10) fixed on a front mounting plate (11) and a rear mounting plate (11);
The small vacuum environment-friendly switch comprises a solid sealing pole (13), a contact seat (14) and a main shaft pull rod (15); the small vacuum environment-friendly switch is welded on the frame (8) through the front mounting plate (11) and the rear mounting plate (11), and is fixed on the mounting hole of the stainless steel sheet metal through the frame (8); the fixed sealing polar post (13) is fixed on the mounting beam (18), the mounting beam (18) is connected with the front mounting plate (11) and the rear mounting plate (11), the contact base (14) is fixed on the fixed sealing polar post (13), the gauge chain contact finger is arranged in the groove of the contact base (14), and the moving contact (20) of the vacuum arc extinguishing chamber passes through the groove to contact with the gauge chain contact finger;
The fuse cabin comprises a cabin body (21), a fuse (22), a 5-claw (23), an 8-claw (24) and an insulating sealing plug (25), wherein the 5-claw (23) is fixed in the cabin body (21) through a bolt, and the 5-claw (23) is tightly hooped by a stainless steel spring so that the 5-claw (23) is in contact with the fuse (22); the 8-claw (24) is fixed on the insulating sealing plug (25) through a bolt, an opening steel ring is arranged on the inner side of the outer claw, the outer claw is contacted with the conductive clip (27) in the cabin body (21), and the inner claw is hooped by a tightening ring to enable the 8-claw (24) to be contacted with the fuse (22);
two groups of belleville springs (12) are arranged on one side of the isolating blade (2);
the grounding switch (31) is welded and fixed in the stainless steel sealing gas tank;
the isolating switch observation device consists of an imaging probe (34) and a handheld display screen (35), and an illuminating lamp (36) is arranged on the imaging probe (34).
2. An environment-friendly gas-insulated switchgear as claimed in claim 1, wherein the outlet terminals (29) are mounted on the housing, the parts inside the housing are bolted to the fuse connection row, the parts outside the housing are used for connection to the incoming and outgoing cables, and sealing rings are provided at the contact points with the housing.
3. An environmentally friendly gas insulated switchgear cabinet according to claim 1, characterized in that said miniature vacuum environmentally friendly switch is fixed to a frame (8).
4. An environmentally friendly gas insulated switchgear as claimed in claim 1, wherein said earthing switch (31) is gear driven.
5. An environmentally friendly gas insulated switchgear as claimed in claim 1, wherein compressed air is used as the insulating medium and vacuum is used for arc extinction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711211834.7A CN107800068B (en) | 2017-11-28 | 2017-11-28 | Environment-friendly gas-insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711211834.7A CN107800068B (en) | 2017-11-28 | 2017-11-28 | Environment-friendly gas-insulated switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107800068A CN107800068A (en) | 2018-03-13 |
| CN107800068B true CN107800068B (en) | 2024-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711211834.7A Active CN107800068B (en) | 2017-11-28 | 2017-11-28 | Environment-friendly gas-insulated switchgear |
Country Status (1)
| Country | Link |
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| CN (1) | CN107800068B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109038347A (en) * | 2018-08-21 | 2018-12-18 | 南通东源电力智能设备有限公司 | A kind of intelligent environmental protection type Inflatable ring main unit |
| CN111477495A (en) * | 2020-05-25 | 2020-07-31 | 浙江聚弘凯电气有限公司 | Isolation integrated switch of air insulation circuit breaker |
| CN112260126B (en) * | 2020-09-27 | 2023-02-10 | 山东电工配网科技发展有限公司 | Rotary mounting device for mounting ring main unit gas tank mechanism and internal components |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205303292U (en) * | 2015-12-28 | 2016-06-08 | 国家电网公司 | High voltage load switch - fuse combination switch |
| CN205452934U (en) * | 2015-12-11 | 2016-08-10 | 平高集团有限公司 | Inflatable cubical switchboard |
| CN106920711A (en) * | 2015-12-28 | 2017-07-04 | 国家电网公司 | High voltage load switch-Combined switch of circuit breaker |
| CN207664512U (en) * | 2017-11-28 | 2018-07-27 | 沈阳昊诚电气有限公司 | A kind of environmental protection gas insulation switch cabinet |
-
2017
- 2017-11-28 CN CN201711211834.7A patent/CN107800068B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205452934U (en) * | 2015-12-11 | 2016-08-10 | 平高集团有限公司 | Inflatable cubical switchboard |
| CN205303292U (en) * | 2015-12-28 | 2016-06-08 | 国家电网公司 | High voltage load switch - fuse combination switch |
| CN106920711A (en) * | 2015-12-28 | 2017-07-04 | 国家电网公司 | High voltage load switch-Combined switch of circuit breaker |
| CN207664512U (en) * | 2017-11-28 | 2018-07-27 | 沈阳昊诚电气有限公司 | A kind of environmental protection gas insulation switch cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107800068A (en) | 2018-03-13 |
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