CN2817142Y - Small-sized gas-insulated metal closed switch device - Google Patents
Small-sized gas-insulated metal closed switch device Download PDFInfo
- Publication number
- CN2817142Y CN2817142Y CN 200520042391 CN200520042391U CN2817142Y CN 2817142 Y CN2817142 Y CN 2817142Y CN 200520042391 CN200520042391 CN 200520042391 CN 200520042391 U CN200520042391 U CN 200520042391U CN 2817142 Y CN2817142 Y CN 2817142Y
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- circuit breaker
- position switch
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Abstract
The utility model relates to provides a kind of miniaturization Cubicle Gas-Insulated Switchgear, it is characterized in that, the centralized control cabinet is located at two bus bar side three position switch one sides, respectively with the bus bar side three position switch, circuit breaker, current transformer, the line side three position switch is connected with cable termination, one side of circuit breaker is connected with two bus bar side three position switchs respectively by two stuffiness disc insulators, opposite side connects current transformer by bolt, be connected with the line side three position switch by the stuffiness disc insulator again, the below stube cable terminal of line side three position switch, line side three position switch powder operation device is located at a side of line side three position switch, two three-position switch actuating mechanisms are connected with two bus bar side three position switchs respectively, and the circuit breaker powder operation device is located at the top of circuit breaker.The utility model has the advantages that executive component is minimum, shared space is littler, dependable performance, complete function.
Description
Technical field
The utility model relates to a kind of miniaturization Cubicle Gas-Insulated Switchgear, in 110kV high voltage power transmission and transforming system, is used for various power plants, boosts, step-down substation etc., plays control, protection and measurement effect, belongs to the high-voltage switch gear technical field.
Background technology
In the 110kV electric power system, as Fig. 1, shown in 2, structural representation for an interval of traditional 110kV sulfur hexafluoride gas-insulating metal enclosed switchgear, by circuit breaker 51, current transformer 52, line side isolating switch 53, line side earthed switch 54, fail close splice grafting ground, line side switch 55, cable termination 56, bus bar side isolating switch 57, bus bar side earthed switch 58, bus bar side isolating switch 59, main bus bar 60, main bus bar 61, circuit breaker operation mechanism 62, combined electrical apparatus centralized control cabinet 63 is formed, circuit breaker 51 upper ends are connected with cable termination 56 with line side isolating switch 53 by current transformer 52, and circuit breaker 51 lower ends are provided with bus bar side isolating switch 57, bus bar side earthed switch 58, bus bar side isolating switch 59, main bus bar 60, main bus bar 61, described circuit breaker operation mechanism 62 is located at the below of circuit breaker 51.
As shown in Figure 3, be the porcelain knob breaker arc quenching chamber structure schematic diagram in the circuit breaker 51, described porcelain knob breaker arc control device by insulated tension pole 64, supporter 65, porcelain vase 66, Mume flower contact 67, main fixed contact 68 form, moving contact 69, insulated tension pole 64 is located at the bottom centre in the porcelain vase 66, the outside of insulated tension pole 64 is provided with moving contact 69, main fixed contact 68 be located at moving contact 69 above, Mume flower contact 67 is located between main fixed contact 68 and the moving contact 69.
Each spacer at interval of tradition 110kV sulfur hexafluoride gas-insulating metal enclosed switchgear is 1300mm～1500mm, isolating switch, earthed switch, main bus bar are separate unit, floor space is big comparatively speaking, and element is many, and the maintenance load of being brought is also big.
Summary of the invention
The purpose of this utility model is that a kind of executive component of invention is minimum, and shared locus is littler, can provide dependable performance again, the miniaturization Cubicle Gas-Insulated Switchgear of complete function simultaneously.
For realizing above purpose, the technical solution of the utility model provides a kind of miniaturization Cubicle Gas-Insulated Switchgear, it is characterized in that, by the centralized control cabinet, two bus bar side three position switchs, two three-position switch actuating mechanisms, circuit breaker, the circuit breaker powder operation device, current transformer, line side three position switch powder operation device, the line side three position switch is connected with the cable termination secondary, the centralized control cabinet is located at two bus bar side three position switch one sides, respectively with the bus bar side three position switch, circuit breaker, current transformer, the line side three position switch is connected with cable termination, one side of circuit breaker is connected with two bus bar side three position switchs respectively by two stuffiness disc insulators, opposite side connects current transformer by bolt, be connected with the line side three position switch by the stuffiness disc insulator again, the below of line side three position switch is connected with cable termination, line side three position switch powder operation device is located at a side of line side three position switch, two three-position switch actuating mechanisms are connected with two bus bar side three position switchs respectively, and the circuit breaker powder operation device is located at the top of circuit breaker.
Described circuit breaker is operated connecting lever, A (C) phase insulated tension pole, three utmost point leading bodies, three utmost point arc control device, case for circuit breaker, conductor mutually by B phase insulated tension pole, connecting lever output shaft, connecting plate, A (C) and is formed, three utmost point arc control device support to isosceles triangle by three insulated columns and are located in the case for circuit breaker, one end of the connecting lever on the output shaft connects B phase insulated tension pole, the other end connects connecting plate, connecting plate is operated connecting lever and A (C) insulated tension pole connection mutually mutually by A (C), three utmost point leading bodies are connected with three utmost point arc control device bottoms respectively, current transformer conductor and arc control device top.
Described every utmost point arc control device are made up of insulated column, support platform, insulation arc extinguishing platform, supporter, insulation pad, insulated tension pole, active contact, main fixed contact, the shell of forming arc control device by insulated column, support platform, insulation arc extinguishing platform, supporter, insulation pad, insulated tension pole, active contact and main fixed contact are located in the shell, initiatively contact is located at the upper end of main fixed contact, insulated tension pole is connected with the active contact, support platform to connect three utmost point leading bodies in the circuit breaker, insulation pad is connected with the circuit breaker upper flange.
The utility model and conventional combination switch have following difference:
1. cancelled between interval and the interval in order to operate and to overhaul the required enough spaces of mechanism of circuit breaker.The operating mechanism of circuit breaker is changed the top that is placed on circuit breaker by original below, be connected with the insulated tension pole of circuit breaker, realize the interlock of three utmost point arc control device moving parts of circuit breaker by bindiny mechanism.Only in this way, just make each distance at interval of miniaturization combined electrical apparatus narrow down to 800mm and become possibility by original 1500mm-1300mm.
2. the utility model " product " font in case for circuit breaker three utmost point arc control device of having arranged, " product " font three utmost point bus-bars conductors of having arranged again simultaneously; Cancel original porcelain knob breaker arc control device outer porcelain vase and Mume flower contact, porcelain vase changes by insulated column, supporter, arc extinguishing insulation pad, supporter and top insulation pad alternative, its purpose is to control the interior electric arc of arc control device influences other the two poles of the earth arc control device and conductor in the cylindrical shell to outdiffusion, the arc control device external diameter is reduced, be loaded on requirement in the same cylindrical shell altogether to satisfy three utmost point arc control device, the utility model turns upside down the dynamic and static part of porcelain knob breaker arc control device simultaneously, the separating brake that is moving contact moves upward by moving downward to change into, and insulated tension pole also moves upward.
The utility model substitutes main fixed contact, supporter cancellation in the porcelain knob breaker arc control device with supporter and main fixed contact, reduced number of spare parts, has improved product reliability.Wherein supporter is used for connecting with current transformer,
All changes make the operating work of arc-extinguishing chamber of circuit breaker only be 1/3rd of air pressing type arc quenching principle, improved simultaneously the connecting-disconnecting function of circuit breaker again, so structure is light and handy, freedom from repairs or few maintenance, make failure rate of the present utility model only for 1/7 of hydraulic mechanism, be 1/14 of pneumatic mechanism.
3. the utility model has adopted bus bar side three position switch and line side three position switch, both originally independently isolating switch 59, earthed switch 58,61 3 kinds of elements of main bus bar to close three be the bus bar side three position switch; In the line side, originally independently isolating switch 53, earthed switch 54, fault earthing switch 55 to close three be the line side three position switch, correspondingly just reduced number of elements, reduced the quantity of element mechanism; In addition, be placed on the side with the controlling organization of traditional isolating switch, earthed switch, fault earthing switch and compare, the controlling organization of three position switch is in the front, so its spacer can narrow down to 800mm, reduced floor space more,
4. the utility model is joined one group of one assembling of three position switch, be that unit switch docks one by one at the disc insulator place of interface, form the connection of conductor, thereby formed the main bus bar of miniaturization switch, promptly cancelled originally independently main bus bar element.
5. the utility model is arranged in three position switch in the outside of circuit breaker, the operating mechanism of three position switch, also by having changed to the outside at interval in the space between interval and the interval, the purpose of arranging like this be for reduce at interval and the interval between the space, making each spacer of combined electrical apparatus narrow down to 800mm from 1500mm-1300mm becomes possibility.
6. the utility model is arranged in three position switch in the outside of circuit breaker
The utility model has the advantages that:
1. the utility model is with SF
6Gas is insulation and arc-extinguishing medium, owing to adopt the self-energy quenching arc principle, the spring operating mechanism that the adapted structure is light and handy, it has, and connecting-disconnecting function is strong, and operating work is little, and mechanical endurance is long, and the reliability height also has advantages such as freedom from repairs or few maintenance;
2. the utility model adopts spring operating mechanism, does not just have the gas leakage of pneumatic mechanism, the oil leakage phenomenon that noise reaches hydraulic mechanism greatly; And do not have corresponding sealing requirements, so good manufacturability, cheap;
3. the utility model has adopted three position switch, has reduced number of elements, thus structure simple compact more, reduced production cost, shared volume only be 50%～60% of traditional Cubicle Gas-Insulated Switchgear, applicability is broadness more;
4. each element of the present utility model is independent closed cell, can be combined into various different units on demand, so versatility is good, can satisfy the different service requirements in all power stations.
Description of drawings
Fig. 1 is traditional 110kV sulfur hexafluoride gas-insulating metal enclosed switchgear structural representation;
Fig. 2 is traditional 110kV sulfur hexafluoride gas-insulating metal enclosed switchgear vertical view;
Fig. 3 is a porcelain knob breaker arc quenching chamber structure schematic diagram;
Fig. 4 is a miniaturization Cubicle Gas-Insulated Switchgear structural representation;
Fig. 5 is a miniaturization Cubicle Gas-Insulated Switchgear vertical view;
Fig. 6 is a bus bar side three position switch structural representation;
Fig. 7 is a bus bar side three position switch vertical view;
Fig. 8 is the breaker structure schematic diagram;
Fig. 9 is the vertical view of circuit breaker;
Figure 10 is a miniaturization combined electrical apparatus arc-extinguishing chamber of circuit breaker structural representation;
Figure 11 is a line side three position switch structural representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As Fig. 4, shown in 5, be miniaturization Cubicle Gas-Insulated Switchgear structural representation, a kind of miniaturization Cubicle Gas-Insulated Switchgear is by centralized control cabinet 1, two bus bar side three position switchs 2, two three position switch control cubicles 3, circuit breaker 4, circuit breaker powder operation device 5, current transformer 6, line side three position switch powder operation device 7, line side three position switch 8 and cable termination 9 are formed, centralized control cabinet 1 is installed in two bus bar side three position switch 2 one sides, respectively with bus bar side three position switch 2, circuit breaker 4, current transformer 6, line side three position switch 8 is connected with cable termination 9, one side of circuit breaker 4 is connected with two bus bar side three position switchs 2 respectively by two stuffiness disc insulators, opposite side connects current transformer 6 by bolt, be connected with line side three position switch 8 by the stuffiness disc insulator again, the below stube cable terminal 9 of line side three position switch 8, line side three position switch powder operation device 7 is installed in a side of line side three position switch 8, two three position switch powder operation devices 3 are connected with two bus bar side three position switchs 2 respectively, and circuit breaker powder operation device 5 is located at the top of circuit breaker 4.
As Fig. 6, shown in 7, be bus bar side three position switch structural representation, described bus bar side three position switch 2 is by housing 10, three-phase conductive component 11, disc insulator 12, earthed switch fixed contact 13, transmission device 14, gear 16, moving contact 17, static contact isolation switch 18 is formed, three sides of housing 10 connect disc insulator 12 by bolt respectively, the upper and lower side of each phase conductive component 11 of three-phase conductive component connects the center conductor of the disc insulator 11 of upper and lower sides, static contact isolation switch 18 is connected the lower end of conductive component 11 by bolt, moving contact 17 is connected with the disc insulator 12 of a side by conductor 15, earthed switch fixed contact 13 is connected with housing 10 upper ends by insulating flange, moving contact 17, static contact isolation switch 18 and earthed switch fixed contact 13 are in same center line, moving contact 17 is respectively equipped with a distance 19 with static contact isolation switch 18 and earthed switch fixed contact 13, transmission device 14 is located between moving contact 17 and the conductor 15, but the one side is by the engagement of the tooth bar on the moving contact 17 of gear on the transmission device 14 16 and moving linearly, and transmission device 14 upper ends are stretched out outside the housing 10 by shaft seal and are connected with three position switch powder operation device 3.
As Fig. 8, shown in 9, be the breaker structure schematic diagram, described circuit breaker 4 is by B phase insulated tension pole 20, connecting lever 21 on the output shaft, connecting plate 22, A (C) operates connecting lever 23 mutually, A (C) phase insulated tension pole 24, three utmost point leading bodies 25, three utmost point arc control device 26, case for circuit breaker 27, conductor 28 is formed, three utmost point arc control device 26 are by three insulated columns 20,24 support, become " product " font to be located in the case for circuit breaker 27, an end of connecting lever 21 connects B phase insulated tension pole 20 on the output shaft, the other end connects connecting plate 22, connecting plate 22 is operated connecting lever 23 and A (C) insulated tension pole 24 connections mutually mutually by A (C), three utmost point leading bodies 25 are connected with three utmost point arc control device 26 respectively, and conductor 28 is connected with current transformer 6.
As shown in figure 10, be miniaturization combined electrical apparatus arc-extinguishing chamber of circuit breaker structural representation, described every utmost point arc control device 26 are by insulated column 29, support platform 30, insulation arc extinguishing platform 31, supporter 32,33, insulation pad 34, insulated tension pole 35, active contact 36, main fixed contact 37 is formed, by insulated column 29, support platform 30, insulation arc extinguishing platform 31, supporter 32,33, insulation pad 34 is formed the shell of arc control device 26, insulated tension pole 35, initiatively contact 36 and main fixed contact 37 are installed in the enclosure, initiatively contact 36 is installed in the upper end of main fixed contact 37, insulated tension pole 35 is connected with active contact 36, support three utmost point leading bodies 25 that platform 30 connects in the circuit breaker 4, supporter 33 1 ends connect the conductor 28 of circuit breaker 4, the other end connects current transformer 6, and insulation pad 34 is connected with circuit breaker 4 upper flanges.
Three utmost point arc control device 26 are supported by three insulated columns 20,24, with casing insulation, operating current flows to circuit breaker three utmost point arc control device 26 from two bus bar side three position switchs 2, be sent to arc control device top supporter 33 by main fixed contact 37, moving main contact 36, flow to current transformer 6 by being installed in supporter 33 upper conductors, to line side three position switch 8, send out by cable termination 9 again.
As shown in figure 11, be line side three position switch structural representation, described line side three position switch 8 comprises three-phase conductive component 38, disc insulator 39, housing 40, static contact isolation switch 41, transmission device 42, moving contact 43, earthed switch fixed contact 44, a side was provided with high speed grounding switch fixed contact 46 in the middle of the conductor of described three-phase conductive component 38 connected 45, high speed grounding switch moving contact 47 is connected on the housing 40 by insulating flange 49, high speed grounding switch moving contact 47 is connected with transmission device 48, and transmission device 48 is connected with outside high speed grounding switch operating mechanism by shaft seal 50.
The rotation axis of three position switch transmission device 42 rotates, drive the tooth bar motion of moving contact 43, make moving contact 43 move to static contact isolation switch 41 position contacting be exactly isolating switch, move to earthed switch fixed contact 44 position contacting be exactly earthed switch; Not contacting with static contact isolation switch 41, when also not contacting with earthed switch fixed contact 44, is middle sub-gate position.Simultaneously, its fault earthing switch is installed on the three position switch shell, and the output shaft rotation when transmission device 48 drives 47 side-to-side movements of fault earthing switch movable contact, contacts with fault earthing switch fixed contact 46, and its function is identical with former fault earthed switch.
Arc control device of the present utility model, its principle is the same with the used arc control device of original gas-insulated metal enclosed switchgear, all is to adopt the self-energy quenching arc principle, has the arc control device of two spouts, two air chambers, makes full use of the energy of electric arc itself, produces the arc blow-out effect.Come extinguish arcs owing to made full use of the energy of electric arc, adopt the air cylinder of minor diameter on its structure, the area of its air cylinder is about about 60% of air pressing type arc quenching principle, thereby has reduced the counter-force of air cylinder when cut-offfing big electric current, has reduced the operating work of mechanism.Transmission device passes to moving contact system in the arc control device with the instruction of operating mechanism, makes it motion and finishes circuit breaker branch, combined floodgate.Its drop-out current has reached 40kA in the 110kV electric pressure.
During work, the operation of line side three position switch 6 is driven by line side three position switch powder operation device 7, breaker operation mechanism 8 drives output shaft 21 rotations in the circuit breaker 4, connecting lever drive insulated tension pole 20 moves up and down on the axle, and drive A (C) operates connecting lever 23 rotations mutually, two-phase insulated tension pole 24 also moves up and down simultaneously, thereby drive the interlock of arc-extinguishing chamber of circuit breaker three utmost points, realize breaker open operation, lock closes, or reclosing reliable operation, the operation of bus bar side three position switch is driven by two three-position switch actuating mechanisms 3 respectively, and the control at whole interval and being presented on the centralized control cabinet 1 realizes.
Claims (6)
1. miniaturization Cubicle Gas-Insulated Switchgear, it is characterized in that, by centralized control cabinet (1), two bus bar side three position switchs (2), two three-position switch actuating mechanisms (3), circuit breaker (4), circuit breaker powder operation device (5), current transformer (6), line side three position switch powder operation device (7), line side three position switch (8) and cable termination (9) are formed, centralized control cabinet (1) is located at two bus bar side three position switchs (2) one sides, respectively with bus bar side three position switch (2), circuit breaker (4), current transformer (6), line side three position switch (8) is connected with cable termination (9) secondary, one side of circuit breaker (4) is connected with two bus bar side three position switchs (2) respectively by two stuffiness disc insulators, opposite side connects current transformer (6) by bolt, be connected with line side three position switch (8) by the stuffiness disc insulator again, the below stube cable terminal (9) of line side three position switch (8), line side three position switch powder operation device (7) is located at a side of line side three position switch (8), two three-position switch actuating mechanisms (3) are connected with two bus bar side three position switchs (2) respectively, and circuit breaker powder operation device (5) is located at the top of circuit breaker (4).
2. miniaturization Cubicle Gas-Insulated Switchgear according to claim 1, it is characterized in that, described bus bar side three position switch (2) is by housing (10), three-phase conductive component (11), disc insulator (12), earthed switch fixed contact (13), transmission device (14), gear (16), moving contact (17), static contact isolation switch (18) is formed, three sides of housing (10) connect disc insulator (12) by bolt respectively, the upper and lower side of each phase conductive component (11) of three-phase conductive component connects the center conductor of the disc insulator (12) of upper and lower sides, static contact isolation switch (18) is connected the lower end of conductive component (11) by bolt, moving contact (17) is connected with the disc insulator (12) of a side by conductor (15), earthed switch fixed contact (13) is connected with housing (10) upper end by insulating flange, moving contact (17), static contact isolation switch (18) and earthed switch fixed contact (13) are in same center line, moving contact (17) is respectively equipped with a distance 19 with static contact isolation switch (18) and earthed switch fixed contact (13), transmission device (14) is located between moving contact (17) and the conductor (15), the one side by the gear (16) on the transmission device (14) but with the moving contact (17) of moving linearly on the tooth bar engagement, transmission device (14) upper end stretches out by shaft seal that housing (10) is outer to be connected with three-position switch actuating mechanism (3).
3. miniaturization Cubicle Gas-Insulated Switchgear according to claim 1, it is characterized in that, described circuit breaker (4) is by B phase insulated tension pole (20), connecting lever output shaft (21), connecting plate (22), A (C) operates connecting lever (23) mutually, A (C) phase insulated tension pole (24), three utmost point leading bodies (25), three utmost point arc control device (26), case for circuit breaker (27), conductor (28) is formed, three utmost point arc control device (26) are by three insulated columns (20,24) supporting to isosceles triangle is located in the case for circuit breaker (27), one end of connecting lever on the output shaft (21) connects B phase insulated tension pole (20), the other end connects connecting plate (22), connecting plate (22) is operated connecting lever (23) and A (C) insulated tension pole (24) connection mutually mutually by A (C), three utmost point leading bodies (25) are connected with three utmost point arc control device (26) respectively, and conductor (28) is connected with current transformer (6).
4. miniaturization Cubicle Gas-Insulated Switchgear according to claim 3, it is characterized in that, described every utmost point arc control device (26) are by insulated column (29), support platform (30), insulation arc extinguishing platform (31), supporter (32,33), insulation pad (34), insulated tension pole (35), active contact (36), main fixed contact (37) is formed, by insulated column (29), support platform (30), insulation arc extinguishing platform (31), supporter (32,33), insulation pad (34) is formed the shell of arc control device (26), insulated tension pole (35), initiatively contact (36) and main fixed contact (37) are located in the shell, initiatively contact (36) is located at the upper end of main fixed contact (37), insulated tension pole (35) is connected with active contact (36), support platform (30) to connect three utmost point leading bodies (25) in the circuit breaker (4), the other end connects current transformer (6), and insulation pad (34) is connected with circuit breaker (4) upper flange.
5. miniaturization Cubicle Gas-Insulated Switchgear according to claim 1, it is characterized in that, described line side three position switch (8) comprises three-phase conductive component (38), disc insulator (39), housing (40), static contact isolation switch (41), transmission device (42), moving contact (43), earthed switch fixed contact (44), be connected with high speed grounding switch fixed contact (46) in the middle of the conductor (45) of described three-phase conductive component (38), high speed grounding switch moving contact (47) is connected on the housing (40) by insulating flange (49), high speed grounding switch moving contact (47) is connected with transmission device (48), and drive system (48) is connected with outside high speed grounding switch operating mechanism by shaft seal (50).
6. miniaturization Cubicle Gas-Insulated Switchgear according to claim 1 is characterized in that, described circuit breaker powder operation device (5) is a spring operating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042391 CN2817142Y (en) | 2005-06-10 | 2005-06-10 | Small-sized gas-insulated metal closed switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042391 CN2817142Y (en) | 2005-06-10 | 2005-06-10 | Small-sized gas-insulated metal closed switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2817142Y true CN2817142Y (en) | 2006-09-13 |
Family
ID=36996952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042391 Expired - Lifetime CN2817142Y (en) | 2005-06-10 | 2005-06-10 | Small-sized gas-insulated metal closed switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2817142Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807483A (en) * | 2010-04-12 | 2010-08-18 | 江苏精科智能电气股份有限公司 | Three-position switch used for gas insulated metal-enclosed switchgear |
| CN104319679A (en) * | 2014-11-12 | 2015-01-28 | 江苏东源电器集团股份有限公司 | Intelligent gas-insulated switchgear of 126 KV |
| CN106451191A (en) * | 2016-11-14 | 2017-02-22 | 国家电网公司 | Cubicle gas-insulated switchgear |
| CN107910801A (en) * | 2017-11-28 | 2018-04-13 | 国网福建省电力有限公司 | A kind of 220kV cable outlets HGIS devices |
| CN117477417A (en) * | 2023-12-28 | 2024-01-30 | 沈阳华德海泰电器有限公司 | Environment-friendly gas-insulated closed combined electrical apparatus |
-
2005
- 2005-06-10 CN CN 200520042391 patent/CN2817142Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807483A (en) * | 2010-04-12 | 2010-08-18 | 江苏精科智能电气股份有限公司 | Three-position switch used for gas insulated metal-enclosed switchgear |
| CN104319679A (en) * | 2014-11-12 | 2015-01-28 | 江苏东源电器集团股份有限公司 | Intelligent gas-insulated switchgear of 126 KV |
| CN106451191A (en) * | 2016-11-14 | 2017-02-22 | 国家电网公司 | Cubicle gas-insulated switchgear |
| CN107910801A (en) * | 2017-11-28 | 2018-04-13 | 国网福建省电力有限公司 | A kind of 220kV cable outlets HGIS devices |
| CN117477417A (en) * | 2023-12-28 | 2024-01-30 | 沈阳华德海泰电器有限公司 | Environment-friendly gas-insulated closed combined electrical apparatus |
| CN117477417B (en) * | 2023-12-28 | 2024-04-12 | 沈阳华德海泰电器有限公司 | Environment-friendly gas-insulated closed combined electrical apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150610 Granted publication date: 20060913 |