CN110112034A - One kind being used for high pressure SF6The screw-type contact of breaker - Google Patents
One kind being used for high pressure SF6The screw-type contact of breaker Download PDFInfo
- Publication number
- CN110112034A CN110112034A CN201910461012.7A CN201910461012A CN110112034A CN 110112034 A CN110112034 A CN 110112034A CN 201910461012 A CN201910461012 A CN 201910461012A CN 110112034 A CN110112034 A CN 110112034A
- Authority
- CN
- China
- Prior art keywords
- contact
- breaker
- arc
- screw
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- BALXUFOVQVENIU-KXNXZCPBSA-N pseudoephedrine hydrochloride Chemical compound [H+].[Cl-].CN[C@@H](C)[C@@H](O)C1=CC=CC=C1 BALXUFOVQVENIU-KXNXZCPBSA-N 0.000 claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000005422 blasting Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 abstract description 6
- 230000008033 biological extinction Effects 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical group [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Circuit Breakers (AREA)
Abstract
The present invention proposes a kind of for high pressure SF6The screw-type contact of breaker, comprising: in high pressure SF6It include: quiet main contact, big spout, dynamic main contac, air cylinder, static arc contact, shielding case, small spout, moving arcing contact and piston in breaker arc extinguishing room；Screw-type is processed into the arc blow-out part of the surface of static arc contact and moving arcing contact.In the present invention, because of the presence of contact internal whorl, so that swiftly flowing SF6Air-flow is no longer simply axially moved along breaker before blowing to arc zone, but the rotary motion of breaker radial direction is biased to certain angle.So that high speed SF6The speed of gas not only has breaker axial component, also radially has very strong velocity component in breaker, can take away the heat of arc zone rapidly, accelerate breaker arc-rupturing capacity.And for the breaker of same volume, due to the variation inside contact, so that breaker capacity increases, arc extinction performance is further promoted.
Description
Technical field
The invention belongs to high-voltage circuitbreaker fields, and in particular to one kind is used for high pressure SF6The screw-type contact of breaker.
Background technique
SF6Gas has good insulation characterisitic, arc quenching characteristic and heating conduction, therefore SF6Gas is as insulation and arc extinguishing
Medium is widely used on power transmission and transforming equipment.High pressure SF6Breaker is that substation needs a kind of important electrical, can
The electric current for being closed, carrying and cut-offfing under normal loop condition, and can close, carry at the appointed time and cut-off abnormal circuit item
The mechanical switching device of electric current under part (such as short circuit).As electric system is increasingly mentioned to what power transmission and transformation q&r required
Height, size and performance to high-voltage circuitbreaker have a new requirement, and with theoretical perfect, skill upgrading and technique into
Step, high pressure SF6The design of breaker achieves significant progress.Currently, high pressure SF6Breaker is gradually to large capacity, miniaturization hair
Exhibition, this requires breaker volume to reduce, so that the arc extinguishing space of circuit breaker internal is also smaller and smaller, the air motion in arc extinguishing region
It is huge on arc extinction influence, therefore the structure inside arc extinguishing region rationally design very necessary.In air-sweeping type open circuit
In device, the structure design of arc-chutes is high pressure SF6The key points and difficulties of circuit breaker design, contact are the main components of arc-chutes,
Electric arc between dynamic/static contact is often by the SF of high-speed motion6Gas is blown.In conclusion high pressure SF6The contact of breaker is arc-chutes
Interior critical component, structure design directly affect arc quenching effect when breaker is cut-off, and cease manner of breathing with breaking capacity of breaker
It closes, also becomes high pressure SF6The core of circuit breaker design.The flowing speed of arc extinguishing gases can be accelerated by designing reasonable structure of contact terminal
Degree, and then improve breaking capacity of breaker.If contact of breaker design is defective, it will slow down arc extinguishing gases arc blow-out speed significantly
Degree, it is serious to result even in failure of interruption, reduce the reliability of breaker.
Summary of the invention
Based on the above technical problem, the present invention carries out screw-type design to the part contact in breaker arc extinguishing room, with this
The motion state for changing flow at high speed arc extinguishing gases in arc-chutes gas passage, enhances its arc blow-out ability, reaches optimized breaker
Structure improves the purpose of breaking capacity of breaker, and then improves the functional reliability of breaker.
A kind of high pressure SF based on screw-type contact6Breaker, in high pressure SF6It include: quiet main touching in breaker arc extinguishing room
Head, big spout, dynamic main contac, air cylinder, static arc contact, shielding case, small spout, moving arcing contact and piston；
The piston is connected with air cylinder, and air cylinder is connected with dynamic main contac and moving arcing contact respectively, dynamic main contac
It is connected with big spout, moving arcing contact is connected with small spout；
Screw-type is processed into the arc blow-out part of the surface of static arc contact and moving arcing contact.
Screw thread includes rectangle, triangle, trapezoidal and four kinds of shapes of zigzag in the screw-type.
The screw-type is used in different breakers, specifically: rectangle contact is used for vacuum circuit breaker；For more
Oil-break uses triangle contact；Trapezoidal contact is used for self-blasting circuit breaker；Zigzag is used for oil-minimum breaker
Contact.
The high pressure SF6SF is full of in breaker arc extinguishing room6Gas；
Advantageous effects:
In the present invention, contact design scheme is by inner surface is designed to thread shape near arc zone between dynamic/static contact,
And the difference of the requirement according to breaker, screw thread can have rectangle, triangle, trapezoidal and four kinds of shapes of zigzag.Because of contact
The presence of internal whorl, so that swiftly flowing SF6Air-flow is before blowing to arc zone no longer simply along breaker axis
To the rotary motion for being moved, but there is certain angle to be biased to breaker radial direction.So that high speed SF6The speed of gas is not only
There is breaker axial component, also radially have very strong velocity component in breaker, the heat of arc zone can be taken away rapidly, added
Fast breaker arc-rupturing capacity.And for the breaker of same volume, due to the variation inside contact, so that breaker capacity
Increase, arc extinction performance is further promoted.
Detailed description of the invention
Fig. 1 is the schematic diagram of the arc quenching chamber structure of the embodiment of the present invention；
Fig. 2 is that the screw-type contact section schematic diagram of the embodiment of the present invention includes four kinds of shapes；
Fig. 3 is that existing circuit breaker gas channel gas flows to schematic diagram；
Fig. 4 is that the circuit breaker gas channel of the embodiment of the present invention flows to schematic diagram；
In figure: 1-SF6Gas zones, 2- quiet main contact, the big spout of 3-, 4- dynamic main contac, 5- air cylinder, the touching of 6- quiet arc
Head, 7- shielding case, the small spout of 8-, 9- moving arcing contact, 10- piston, 11- screw thread contact part, 12- rectangular thread contact section,
13- triangle thread contact section, 14- trapezoidal thread contact section, 15- saw-tooth thread contact section.
Specific embodiment
Invention is described further with specific implementation example with reference to the accompanying drawing, one kind being used for high pressure SF6Breaker
Screw-type contact, in high pressure SF6In breaker arc extinguishing room, as shown in Figure 1, comprising: quiet main contact 2, big spray 3 mouthfuls, dynamic main contac
4, air cylinder 5, quiet arc touching 6, shielding case 7, small spout 8, moving arcing contact 9 and piston 10；
The piston is connected with air cylinder, and air cylinder is connected with dynamic main contac and moving arcing contact respectively, dynamic main contac
It is connected with big spout, moving arcing contact is connected with small spout；
Screw-type is processed into the arc blow-out part of the surface (i.e. screw thread lift one's head part) 11 of static arc contact 6 and moving arcing contact 9.
Screw thread includes rectangle, triangle, trapezoidal and four kinds of shapes of zigzag in the screw-type, as shown in Figure 2.
The screw-type is used in different breakers, specifically: rectangle contact is used for vacuum circuit breaker；For more
Oil-break uses triangle contact；Trapezoidal contact is used for self-blasting circuit breaker；Zigzag is used for oil-minimum breaker
Contact.
The high pressure SF6SF is full of in breaker arc extinguishing room6Gas；
The present invention is to existing 252kV high pressure SF6Contact of breaker part improves, which includes SF6Gas zones
1, shielding case 7, quiet main contact 2 and dynamic main contac 4 are the metal structure to conduct electricity very well, 9 phase of static arc contact 6 and moving arcing contact
Mating part is tungsten-copper alloy resistant to high temperature, and the crucial arc blow-out part of the surface 11 of static arc contact 6 and moving arcing contact 9 is processed into
Screw-type.When air cylinder 5 moves downward, since the airflow channel that big spout 3 and small spout 8 are formed is extremely narrow, so that big spout 3
Arc extinguishing gases flow velocity is high in the channel formed between small spout 8, when flowing through at screw thread contact part 11, due to contact shape
Change, gas flow is no longer single axial movement, but has the rotational flow of certain angle, and arc extinguishing gases not only have
There is axial velocity, there are also very strong tangential speed components, can take away a large amount of energy rapidly during arc blow-out, enhancing is resolved
Road device arc-rupturing capacity, as shown in Figure 4；And the prior art, as shown in figure 3, circuit breaker gas flow direction is single axial movement.This
Outside, according to this circuit breaker design method, screw-type contact can be designed to by square according to the structure and requirement of breaker
Shape, triangle, trapezoidal and four kinds of shapes of zigzag, and can according to reality, width to the upper and lower surface of screw-type contact and
The height of contact distinguishes design, and design can also be distinguished to its angle for triangle, trapezoidal and zigzag, thus
Meet the requirement of different breakers.Rectangle contact can be used for vacuum circuit breaker, can preferably control air-flow trend；For
Bulk oil circuit can use triangle contact, preferably control temperature change；It can be used for self-blasting circuit breaker trapezoidal
Contact can preferably cooperate operating mechanism optimized breaker performance；Zigzag contact can be used for oil-minimum breaker, is improved
The break performance and dielectric recovery property of arc-chutes.
Claims (4)
1. one kind is used for high pressure SF6The screw-type contact of breaker, which is characterized in that in high pressure SF6Breaker arc extinguishing room Nei Bao
It includes: quiet main contact, big spout, dynamic main contac, air cylinder, static arc contact, shielding case, small spout, moving arcing contact and piston；
The piston is connected with air cylinder, and air cylinder is connected with dynamic main contac and moving arcing contact respectively, dynamic main contac and big
Spout is connected, and moving arcing contact is connected with small spout；
Screw-type is processed into the arc blow-out part of the surface of static arc contact and moving arcing contact.
2. being used for high pressure SF according to claim 16The screw-type contact of breaker, which is characterized in that spiral shell in the screw-type
Line includes rectangle, triangle, trapezoidal and four kinds of shapes of zigzag.
3. being used for high pressure SF according to claim 16The screw-type contact of breaker, which is characterized in that the screw-type uses
In different breakers, specifically: rectangle contact is used for vacuum circuit breaker；It is touched for bulk oil circuit using triangle
Head；Trapezoidal contact is used for self-blasting circuit breaker；Zigzag contact is used for oil-minimum breaker.
4. being used for high pressure SF according to claim 16The screw-type contact of breaker, which is characterized in that the high pressure SF6It is disconnected
SF is full of in the device arc-chutes of road6Gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461012.7A CN110112034A (en) | 2019-05-30 | 2019-05-30 | One kind being used for high pressure SF6The screw-type contact of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910461012.7A CN110112034A (en) | 2019-05-30 | 2019-05-30 | One kind being used for high pressure SF6The screw-type contact of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110112034A true CN110112034A (en) | 2019-08-09 |
Family
ID=67492834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910461012.7A Pending CN110112034A (en) | 2019-05-30 | 2019-05-30 | One kind being used for high pressure SF6The screw-type contact of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112034A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005243465A (en) * | 2004-02-26 | 2005-09-08 | Tm T & D Kk | Gas circuit breaker |
| CN201112265Y (en) * | 2007-10-22 | 2008-09-10 | 沈阳工业大学 | Cyclone type nozzle high voltage gas blowing breaker with groove |
| JP2013246904A (en) * | 2012-05-23 | 2013-12-09 | Toshiba Corp | Gas-blast circuit breaker |
| JP2014229363A (en) * | 2013-05-17 | 2014-12-08 | 株式会社東芝 | Gas circuit breaker |
| CN108831791A (en) * | 2018-06-04 | 2018-11-16 | 沈阳工业大学 | One kind being used for high pressure SF6The screw-type spout of breaker |
| CN209947744U (en) * | 2019-05-30 | 2020-01-14 | 沈阳工业大学 | For high-pressure SF6Thread type contact of circuit breaker |
-
2019
- 2019-05-30 CN CN201910461012.7A patent/CN110112034A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005243465A (en) * | 2004-02-26 | 2005-09-08 | Tm T & D Kk | Gas circuit breaker |
| CN201112265Y (en) * | 2007-10-22 | 2008-09-10 | 沈阳工业大学 | Cyclone type nozzle high voltage gas blowing breaker with groove |
| JP2013246904A (en) * | 2012-05-23 | 2013-12-09 | Toshiba Corp | Gas-blast circuit breaker |
| JP2014229363A (en) * | 2013-05-17 | 2014-12-08 | 株式会社東芝 | Gas circuit breaker |
| CN108831791A (en) * | 2018-06-04 | 2018-11-16 | 沈阳工业大学 | One kind being used for high pressure SF6The screw-type spout of breaker |
| CN209947744U (en) * | 2019-05-30 | 2020-01-14 | 沈阳工业大学 | For high-pressure SF6Thread type contact of circuit breaker |
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