CN220273151U - Non-power-failure extension device for high-capacity combined electrical appliance - Google Patents
Non-power-failure extension device for high-capacity combined electrical appliance Download PDFInfo
- Publication number
- CN220273151U CN220273151U CN202321909497.XU CN202321909497U CN220273151U CN 220273151 U CN220273151 U CN 220273151U CN 202321909497 U CN202321909497 U CN 202321909497U CN 220273151 U CN220273151 U CN 220273151U
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- double
- switch
- isolating switch
- break
- air chamber
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- 239000012212 insulator Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 description 5
- 238000002955 isolation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model relates to a high-capacity combined electrical appliance uninterrupted power extension device, which comprises a first main bus, wherein the first main bus is connected with a first double-break isolating switch, and a first air chamber is arranged in the first double-break isolating switch, and is characterized in that: the first double-break isolating switch is connected with the first grounding switch, the top of the first double-break isolating switch is connected with the first tee joint, the second air chamber is arranged in the first tee joint, the first tee joint is connected with the second grounding switch, the third air chamber is arranged in the second grounding switch, the third grounding switch is connected below the second grounding switch, the second grounding switch is connected with the second double-break isolating switch, one side of the second double-break isolating switch is connected with the fourth grounding switch, and the other side of the second double-break isolating switch is connected with the second main bus. The beneficial effects of the utility model are as follows: the uninterrupted extension is realized by adjusting the on-off state of the double-break isolating switch and the grounding switch and the pressure of the air chamber of the extension interface air chamber.
Description
Field of the art
The utility model belongs to the technical field of power switching equipment, and particularly relates to a non-power-outage extension device of a high-capacity combined electrical appliance.
(II) background art
With the progress of electric power technology and the development of national economy, GIS products are widely applied in the market by virtue of a series of advantages of small occupied area, low operation failure rate, light weight, no maintenance and the like of the self-structure. In the typical design of the current transformer substation, the backup extension equipment of the combined electrical appliance has no isolation fracture or only one isolation fracture between the backup extension equipment and the operation equipment. Due to the unique structural characteristics of the device, power failure treatment is needed to be carried out on an operation bus when the extension installation and the handover withstand voltage test of the standby equipment of the 252kV combined electrical appliance are carried out, and the original operation equipment can be disassembled when the withstand voltage is abnormal, so that the waste of manpower and material resources is brought, and huge economic loss can be caused by power failure.
(III) summary of the utility model
The utility model provides the uninterrupted power extension device of the high-capacity combined electrical appliance, which has the advantages of simple and compact structure, no need of stopping an original bus, time saving and labor saving, and the like, so as to make up the defects of the prior art.
The utility model is realized by the following technical scheme:
the utility model provides a large capacity combined electrical apparatus does not have a power failure extension device, includes first main bus, and first main bus is connected with first double-break isolator, is equipped with first air chamber, characterized by in the first double-break isolator: the first double-break isolating switch is connected with the first grounding switch, the top of the first double-break isolating switch is connected with the first tee joint, the second air chamber is arranged in the first tee joint, the first tee joint is connected with the second grounding switch, the third air chamber is arranged in the second grounding switch, the third grounding switch is connected below the second grounding switch, the second grounding switch is connected with the second double-break isolating switch, one side of the second double-break isolating switch is connected with the fourth grounding switch, and the other side of the second double-break isolating switch is connected with the second main bus.
And a fourth air chamber is arranged in the second double-fracture isolating switch.
The second grounding switch is connected with the second double-fracture isolating switch through a second tee joint.
The first tee joint is connected with the second grounding switch through a corrugated pipe.
The outer side of the first tee joint is connected with a basin-type insulator.
The first double-fracture isolating switch and the second double-fracture isolating switch are respectively arranged on the underframe through supporting pieces.
The beneficial effects of the utility model are as follows: by adjusting the on-off state of the double-break isolating switch and the grounding switch and the air chamber pressure of the air chamber of the extension interface, the uninterrupted extension is realized, and the industrial problem that the original bus is required to be stopped during GIS extension, overhaul and test is thoroughly solved.
(IV) description of the drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure, a first main bus, a second double-break isolating switch, a third air chamber, a fourth air chamber, a third main bus, a fourth air chamber, a third tee, a 15 corrugated pipe, a 16 basin-type insulator, a 17 support, an 18 underframe, a 19 contact seat, a 20 conducting rod and a 21 main interval are arranged in the figures.
(fifth) detailed description of the utility model
The drawings illustrate one embodiment of the utility model. The embodiment comprises a first main bus 1, wherein the first main bus 1 is connected with a first double-break isolating switch 2, a first air chamber 3 is arranged in the first double-break isolating switch 2, the first double-break isolating switch 2 is connected with a first grounding switch 4, the top of the first double-break isolating switch 2 is connected with a first tee 5, a second air chamber 6 is arranged in the first tee 5, the first tee 5 is connected with a second grounding switch 7, a third air chamber 8 is arranged in the second grounding switch 7, a third grounding switch 9 is connected below the second grounding switch 7, the second grounding switch 7 is connected with a second double-break isolating switch 10, one side of the second double-break isolating switch 10 is connected with a fourth grounding switch 11, and the other side of the second double-break isolating switch 10 is connected with a second main bus 12. A fourth air chamber 13 is arranged in the second double-break isolating switch 10. The second grounding switch 7 is connected with the second double-break isolating switch 10 through a second tee joint 14. The first tee 5 is connected with the second grounding switch 7 through a corrugated pipe 15. The outer side of the first tee joint 5 is connected with a basin-type insulator 16. The first double-break disconnector 2 and the second double-break disconnector 10 are mounted on a chassis 18 by means of a support 17, respectively.
The utility model relates to a non-power-failure extension device of a high-capacity combined electrical appliance, which mainly relies on a first double-break isolating switch 2 and a second double-break isolating switch 10, and is characterized in that one mechanism drives two breaks to act simultaneously, so as to realize opening and closing operations. The main bus live-line operation state is as follows: the first double-break isolating switch 2 and the second double-break isolating switch 10 are both in a breaking position, the first grounding switch 4 and the fourth grounding switch 11 are both in a breaking position, and the third grounding switch 9 is in a closing position. When the power-outage extension device is in butt joint, rated pressure is kept in the first air chamber 3 and the fourth air chamber 13, gas in the second air chamber 6 and the third air chamber 8 is recovered, the first double-break isolating switch 2 and the second double-break isolating switch 10 are both in a switching-off position, the first grounding switch 4, the fourth grounding switch 11 and the third grounding switch 9 are both in a switching-on position, an extension end shielding cover is replaced by a contact base 19, and the conducting rod 20 is fixed on the butt joint side and is in butt joint with the main interval 21 (a dotted line part). After the butt joint is completed, SF6 gas with rated pressure is filled into the first air chamber 3, the second air chamber 6, the third air chamber 8 and the fourth air chamber 13, the first double-break isolating switch 2 and the second double-break isolating switch 10 are both positioned at the opening positions, and the first grounding switch 4, the fourth grounding switch 11 and the third grounding switch 9 are all positioned at the closing positions. According to the pressure-resistant scheme after butt joint, the first double-break isolating switch 2 and the second double-break isolating switch 10 are both positioned at a switching-off position, and the first grounding switch 4 and the fourth grounding switch 11 are both positioned at a switching-on position; the third grounding switch 9 is positioned at the opening position, and performs a withstand voltage test on extension equipment, and the operation state is transferred after the withstand voltage is completed.
Claims (6)
1. The utility model provides a large capacity combined electrical apparatus does not have a power failure extension device, includes first main bus (1), and first main bus (1) is connected with first double-break isolator (2), is equipped with first air chamber (3), characterized by in the first double-break isolator (2): the utility model discloses a high-voltage power supply device, including first double-break isolating switch (2), second three-way (5), second air chamber (6), first three-way (5), second earthing switch (7), third air chamber (8), third earthing switch (9), second earthing switch (7) below connection, second earthing switch (7) are connected with second double-break isolating switch (10), fourth earthing switch (11) is connected at second double-break isolating switch (10) one side, second main bus (12) is connected to second double-break isolating switch (10) opposite side.
2. The uninterruptible power extension device of the high-capacity combined electrical appliance according to claim 1, wherein the device is characterized in that: a fourth air chamber (13) is arranged in the second double-fracture isolating switch (10).
3. The uninterruptible power extension device of the high-capacity combined electrical appliance according to claim 1, wherein the device is characterized in that: the second grounding switch (7) is connected with the second double-break isolating switch (10) through a second tee joint (14).
4. The uninterruptible power extension device of the high-capacity combined electrical appliance according to claim 1, wherein the device is characterized in that: the first tee joint (5) is connected with the second grounding switch (7) through a corrugated pipe (15).
5. The uninterruptible power extension device of the high-capacity combined electrical appliance according to claim 1, wherein the device is characterized in that: the outer side of the first tee joint (5) is connected with a basin-type insulator (16).
6. The uninterruptible power extension device of the high-capacity combined electrical appliance according to claim 1, wherein the device is characterized in that: the first double-break isolating switch (2) and the second double-break isolating switch (10) are respectively arranged on the underframe (18) through the supporting piece (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321909497.XU CN220273151U (en) | 2023-07-20 | 2023-07-20 | Non-power-failure extension device for high-capacity combined electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321909497.XU CN220273151U (en) | 2023-07-20 | 2023-07-20 | Non-power-failure extension device for high-capacity combined electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220273151U true CN220273151U (en) | 2023-12-29 |
Family
ID=89305422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321909497.XU Active CN220273151U (en) | 2023-07-20 | 2023-07-20 | Non-power-failure extension device for high-capacity combined electrical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220273151U (en) |
-
2023
- 2023-07-20 CN CN202321909497.XU patent/CN220273151U/en active Active
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