CN200987048Y - Air-inflating cabinet using sulfur hexafluoride gas insulation - Google Patents
Air-inflating cabinet using sulfur hexafluoride gas insulation Download PDFInfo
- Publication number
- CN200987048Y CN200987048Y CN 200620014480 CN200620014480U CN200987048Y CN 200987048 Y CN200987048 Y CN 200987048Y CN 200620014480 CN200620014480 CN 200620014480 CN 200620014480 U CN200620014480 U CN 200620014480U CN 200987048 Y CN200987048 Y CN 200987048Y
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- China
- Prior art keywords
- inflation
- sulfur hexafluoride
- hexafluoride gas
- insulator
- casing
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Abstract
The utility model discloses an insulating air inflation cabinet adopting the sulphur hexafluoride. The air inflation cabinet comprises air inflation boxes connected with each other and an operation mechanism chamber. The air inflation boxes are sealed-off boxes, in which SF6 with a certain operational pressure is filled, and are provided with three-station load switch components. Two sides of the air inflation boxes are respectively provided with two sets of three-phase inlet end insulator, which are connected with each other through cooper bars, and two sets of outlet end insulators, which are connected with each other through cooper bars. A leading-in wire cable is connected with an upper fixed contact on the three-station load switch components through two sets of inlet end insulator and a rear-set wire cable is connected with the lower fixed contact on the three-station load switch components through an outlet end insulator. The lower bottom of the air inflation box is provided with a pressure-releasing device. Compared with the existing technology, the air inflation cabinet of the utility model is used safely, has high reliability and simple operation, and is maintenance-free and is convenient to assemble, and is uneasy to be affected by the surroundings.
Description
Technical field
The utility model relates to a kind of gas-insulated switchgear assembly, particularly a kind of inflation cabinet that adopts sulfur hexafluoride gas-insulating.
Background technology
The existing switchgear that is widely used in the three-phase ac power system mostly is air-insulated switchgear.For guarantee between current carrying part and the current carrying part (abbreviation phase and phase) and current carrying part and grounded part (abbreviation phase and ground) between not by voltage breakdown, must guarantee enough air insulation distances.The switchgear that has isolating switch and earthed switch, its circuit breaker, isolating switch and earthed switch must be installed in three different compartments.The volume of switchgear is inevitable bigger, and cost is higher.
Sulphur hexafluoride (SF6) gas comes across earlier 1900s, and it is sulphur formed gas when burning in the gas of fluorine.SF6 gas is a kind of colourless, tasteless, nontoxic, gaseous material of combustion chemistry stable performance not in the normal state, and its density approximately is 5 times of air.Because the elecrtonegativity of its molecule, have very strong absorption free electron and form the ability of anion, thereby its electric strength height, have excellent insulation property.Its dissociation temperature is low, and dissipation energy is big, also is a kind of gas with excellent arc extinction performance.SF6 gas with its good insulation property and arc extinction performance with and gas have aphlogistic characteristic, progressively be used for electric equipment as novel dielectric by people.
The utility model content
The purpose of this utility model is the defective at prior art, and a kind of inflation cabinet that adopts sulfur hexafluoride gas-insulating is provided, and it is safe in utilization, reliability is high, simple to operate, non-maintaining, easy for installation, and not influenced by external environmental condition.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme: design a kind of inflation cabinet that adopts sulfur hexafluoride gas-insulating, comprise interconnective inflation casing and operating mechanism chamber, described inflation casing is the seal case that charges into certain operating pressure SF6 gas, and the three-stations load switch assembly is housed in it; The both sides of inflation casing are respectively equipped with two groups of three-phase inlet side insulators and two groups of three-phases go out to hold insulator, two groups of three-phase inlet side insulators connect by copper bar, two groups of three-phases go out to hold insulator also to connect by copper bar, the inlet wire cable is connected with the upper static contact of three-stations load switch assembly via two groups of inlet side insulators, and the outlet cable is via going out to hold insulator to be connected with the following fixed contact of three-stations load switch assembly; The lower bottom part of inflation casing is equipped with pressure relief device.
The seal case of described inflation casing for adopting corrosion resistant plate to be welded.
Described operating mechanism chamber is the installing space of the operating mechanism of three-stations load switch assembly, also is the installing space of inflation cabinet control unit.The Pressure gauge that is used to monitor sulfur hexafluoride gas pressure in the inflation casing is housed on this operating mechanism chamber.The indoor operating mechanism of this operating mechanism has position indicating device and mechanical interlocks, can also be equiped with auxiliary contact, tripping mechanism and/or electrically operated device.
Described inlet side insulator and go out to hold insulator to be preferably flood control type insulator.
Compared with prior art, the beneficial effects of the utility model are embodied in the following aspects:
1, non-maintaining: the seal case of main switch chamber for adopting corrosion resistant plate to be welded, components and parts such as on-load switch, earthed switch and bus are sealed in the casing that charges into SF6 gas, isolated fully with external environment condition, be not subjected to the influence of air environmental pollution, therefore have all weather operations performance, and can be non-maintaining.The degree of protection of gas tank reaches IP67.Can non-maintainingly reach more than 20 years
2, safety, environmental protection are mainly reflected in: 1) main switch chamber rear lower is equipped with pressure relief device, and when arc fault occurring, when gas pressure reached 0.18 (± 0.03) MPa, pressure relief device explosion reliably ensured operating personnel's personal safety.2) leak rate low (environmental protection), insulation property are strong, and Pressure gauge is equipped with in the main switch chamber, can monitor the pressure of sulfur hexafluoride gas in the casing, guarantee the fail safe of switch operation.3) the cabinet inner bottom part is equipped with molecular sieve, is used for absorbing the micro-moisture of gas, guarantees gas good insulation performance performance.
3, interim expandability is strong: bus is fixed on the top of casing by bus-bar insulator, only needs just to expand main bus bar rated current 630A by bus tie; Outside stube cable adopts the silicone rubber for cable material, makes cable joint and external environment condition isolated fully, has avoided being subjected to air environmental pollution, and toy and flood damage are to the influence of switch cubicle.
4, volume little, economize on resources: the volume of existing inflation cabinet casing has only original 1/3.
5, flexible operation: operating mechanism has position indicating device and mechanical interlocks, also can install auxiliary contact, tripping mechanism and electrically operated device.
6, mechanical endurance is long: can reach the mechanical endurance of on-load switch more than 5000 times; Earthed switch can reach more than 1000 times mechanical endurance.
7, the reliability of equipment strengthens, owing to have two groups of three-phase inlet side insulators and two groups of three-phases go out to hold insulator, two groups of three-phase inlet side insulators connect by copper bar, two groups of three-phases go out to hold insulator also to connect by copper bar, therefore can insert two different inlet wire circuits simultaneously, in case wherein inlet wire circuit breaks down and occurs opening circuit or when needing temporarily disconnected to keep in repair, thereby another inlet wire circuit still can normally transmit electric power and guarantee next stage controller switching equipment or terminal use's normal electricity consumption needs, and, also can insert two different outlet circuits simultaneously, so that control more load or subordinate's controller switching equipment simultaneously.
Description of drawings
Fig. 1 is an inlet wire side structure schematic diagram of the present utility model;
Fig. 2 is a front of the present utility model perspective structure schematic diagram;
Fig. 3 is an outlet side structure schematic diagram of the present utility model;
Fig. 4 is a Facad structure schematic diagram of the present utility model.
Embodiment
Inflation cabinet of the present utility model is connected to form by sulphur hexafluoride (SF6) inflation casing 1, operating mechanism chamber 2, and they can be used as a separate modular and make, and only needs to connect with regard to one-tenth capable of being combined inflation cabinet of the present utility model with screw.
The seal case that inflation casing 1 is welded for the employing corrosion resistant plate, charge into operating pressure in it and be 1.4bar SF6 gas, in the casing that charges into SF6 gas that components and parts such as three-stations load switch assembly 3 and bus are sealed in, isolated fully with external environment condition, also non-maintaining to guarantee the influence that not changed by external environment condition.Can be installed on humidity, rocky many dirt, salt dirt, mine, box-type substation and any owing to air pollution easily causes the place of surperficial pollution flashover and needn't take special precautionary measures.Molecular sieve is equipped with in bottom in the inflation casing, is used for absorbing the micro-moisture of SF6 gas, guarantees SF6 gas good insulation performance performance.
The both sides of inflation casing are respectively equipped with two groups of three-phase inlet side insulators 4 and two groups of three-phases go out to hold insulator 5, described inlet side insulator 4 and go out to hold insulator 5 to be flood control type insulator, inlet side insulator 4 is located at the top of inflation casing inlet wire side, go out to hold insulator 5 to be located at the bottom of inflation casing outlet side, turnover line cable is connected on inlet wire upper lateral part and outlet side lower part respectively.Two groups of three-phase inlet side insulators 4 connect by copper bar 13, two groups of three-phases go out to hold insulator 5 also to connect by copper bar 14, the inlet wire cable is connected with the upper static contact 6 of three-stations load switch assembly 3 via two groups of inlet side insulators 4, and the outlet cable is via going out to hold insulator to be connected with the following fixed contact 7 of three-stations load switch assembly.The inlet wire side can insert two different inlet wire circuits simultaneously, in case wherein inlet wire circuit breaks down and occurs opening circuit or when needing temporarily disconnected to keep in repair, thereby another inlet wire circuit still can normally transmit electric power and guarantee next stage controller switching equipment or terminal use's normal electricity consumption needs, and, also can insert two different outlet circuits simultaneously, so that control more load or subordinate's controller switching equipment simultaneously, thereby strengthened the reliability of equipment.
The rear lower of inflation casing 1 is equipped with pressure relief device 8, and when arc fault occurring, when gas pressure reached 0.18 (± 0.03) MPa, pressure relief device explosion reliably ensured operating personnel's personal safety.
With the three-stations load switch assembly 3 inflation casing 1 of packing into, three-stations load switch assembly 3 is to close to close, to cut-off the operating current in loop or the functional unit of overload current, and connects, isolates major loop or with loop ground connection by three-station.
The inlet wire side of three-stations load switch assembly is connected on the bus tie by copper bar, and bus tie is fixed on the inlet wire side plate of inflation casing with pressing plate; The outlet side of three-stations load switch assembly also is connected to out on the outer conehead 9 of cable of end insulator 5 by copper bar, and the outer conehead 9 usefulness pressing plates of cable are fixed on the outlet side plate of inflation casing.Go out to hold insulator 5 will go out line current and cause next stage controller switching equipment or user.Bus tie is used to connect major loop, will inflate casing simultaneously and be isolated from the outside out.The outlet side that the outer conehead of cable is the inflation cabinet is used for the inflation casing is isolated from the outside out.The inflation casing that the outer conehead 5 of cable, bus tie, three-stations load switch assembly 3 are installed constitutes a high voltage package, all high pressure current-carrying parts are installed in the inside of inflation casing 1, the outer conehead 9 of inlet side insulator 4, bus tie, three-stations load switch assembly 3, cable, go out to hold insulator 5 to form the high pressure galvanic circle.
Bus is fixed on the top of casing by bus-bar insulator, only needs just can expand by bus tie.The expansion bus is for insulating fully and shield, and is to guarantee the influence that not changed by external environment condition also non-maintaining.Outside stube cable adopts the silicone rubber for cable material, makes cable joint and external environment condition isolated fully, has avoided being subjected to air environmental pollution, and toy and flood damage are to the influence of switch cubicle.
To inflate casing with vacuum pump and be extracted into vacuum state, through the high-purity nitrogen pressurize, be defined as air tight after, charging into SF6 gas again is 1.4bar (room temperature 20 degree) to pressure.With being higher than atmospheric SF6 gas as dielectric.
Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the present utility model design; can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (8)
1. inflation cabinet that adopts sulfur hexafluoride gas-insulating, comprise interconnective inflation casing and operating mechanism chamber, described inflation casing is the seal case that charges into certain operating pressure SF6 gas, the three-stations load switch assembly is housed in it, it is characterized in that: the both sides of inflation casing are respectively equipped with two groups of three-phase inlet side insulators and two groups of three-phases go out to hold insulator, two groups of three-phase inlet side insulators connect by copper bar, two groups of three-phases go out to hold insulator also to connect by copper bar, the inlet wire cable is connected with the upper static contact of three-stations load switch assembly via two groups of inlet side insulators, and the outlet cable is via going out to hold insulator to be connected with the following fixed contact of three-stations load switch assembly; The lower bottom part of inflation casing is equipped with pressure relief device.
2. the inflation cabinet of employing sulfur hexafluoride gas-insulating according to claim 1 is characterized in that: the seal case of described inflation casing for adopting corrosion resistant plate to be welded.
3. the inflation cabinet of employing sulfur hexafluoride gas-insulating according to claim 1 is characterized in that: indoor operating mechanism and the inflation cabinet control unit that the three-stations load switch assembly is installed of described operating mechanism.
4. the inflation cabinet of employing sulfur hexafluoride gas-insulating according to claim 3 is characterized in that: the Pressure gauge that is used to monitor sulfur hexafluoride gas pressure in the inflation casing is housed on the described operating mechanism chamber.
5. according to the inflation cabinet of claim 3 or 4 described employing sulfur hexafluoride gas-insulatings, it is characterized in that: the indoor operating mechanism of described operating mechanism has position indicating device and mechanical interlocks.
6. the inflation cabinet of employing sulfur hexafluoride gas-insulating according to claim 5 is characterized in that: the indoor operating mechanism of described operating mechanism can also be installed auxiliary contact, tripping mechanism and/or electrically operated device.
7. the inflation cabinet of employing sulfur hexafluoride gas-insulating according to claim 1 is characterized in that: described inlet side insulator and go out to hold insulator to be flood control type insulator.
8. the inflation cabinet of employing sulfur hexafluoride gas-insulating according to claim 1 is characterized in that: the inlet side insulator is positioned at the top of inflation casing inlet wire side, goes out to hold insulator to be positioned at the bottom of inflation casing outlet side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014480 CN200987048Y (en) | 2006-09-01 | 2006-09-01 | Air-inflating cabinet using sulfur hexafluoride gas insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620014480 CN200987048Y (en) | 2006-09-01 | 2006-09-01 | Air-inflating cabinet using sulfur hexafluoride gas insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200987048Y true CN200987048Y (en) | 2007-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620014480 Expired - Fee Related CN200987048Y (en) | 2006-09-01 | 2006-09-01 | Air-inflating cabinet using sulfur hexafluoride gas insulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200987048Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362575A (en) * | 2014-09-22 | 2015-02-18 | 国家电网公司 | Cable earth box with pressure release device |
| CN111653973A (en) * | 2020-06-30 | 2020-09-11 | 山东泰开箱变有限公司 | New forms of energy compact large capacity prepackage type transformer substation |
-
2006
- 2006-09-01 CN CN 200620014480 patent/CN200987048Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362575A (en) * | 2014-09-22 | 2015-02-18 | 国家电网公司 | Cable earth box with pressure release device |
| CN111653973A (en) * | 2020-06-30 | 2020-09-11 | 山东泰开箱变有限公司 | New forms of energy compact large capacity prepackage type transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG A ER PAI POWER SCIENCE CO., LTD. Free format text: FORMER NAME: SHENZHEN CITY SHENBO ELECTRICAL CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Nanshan District Xili Ma Kan village in Shenzhen city of Guangdong province with prosperous industrial park two building two floor, zip code: 518000 Patentee after: Guangdong Aerpai Electric Power Technology Co.,Ltd. Address before: Nanshan District Xili Ma Kan village in Shenzhen city of Guangdong province with prosperous industrial park two building two floor, zip code: 518000 Patentee before: Shenzhen Shenbo Electric Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20110901 |