CN2512100Y - Anti-burn movable contact assembly for SF6 circuit breaker - Google Patents
Anti-burn movable contact assembly for SF6 circuit breaker Download PDFInfo
- Publication number
- CN2512100Y CN2512100Y CN 01279415 CN01279415U CN2512100Y CN 2512100 Y CN2512100 Y CN 2512100Y CN 01279415 CN01279415 CN 01279415 CN 01279415 U CN01279415 U CN 01279415U CN 2512100 Y CN2512100 Y CN 2512100Y
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- China
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- contact
- arc
- moving
- pull bar
- circuit breaker
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Abstract
The utility model relates to an anti-burn movable contact assembly for SF6 circuit breaker which belongs to the arc extinguishing device of high voltage breaker, and is mainly used for preventing the arc loop burning of a main contact in an arc extinguishing chamber of SF6 circuit breaker. The component provides a ring-shaped tooth flank disc spring (6) made from a hard material with favorable electric conduction performance between an electric conduction pull rod (2) and an active arc contact (8), after the tooth flank disc spring is assembled on the movable contact assembly, which can press a double-face dense tooth into the end of the electric conduction pull rod (2) and the end of the active arc contact (8) to be contacted with; therefore the contact area among the three is enlarged; simultaneously, the spring force can keep the tight pressing condition between the electric conduction pull rod (2) connected with a nozzle cover through a threading method and the active arc contact (8) so as to prevent the resistance increasing and the electric arc generation between a movable main contact (7) and a static main contact (15) in the opening process.
Description
(1) technical field:
The utility model belongs to the primary cut-out arc-control device, is mainly used in to prevent main contact arcing burn in the SF 6 arc-extinguishing chamber of circuit breaker.
(2) background technology:
Sulfur hexafluoride breaker is the high voltage electric equipment that is widely used in industrial enterprise and urban power grid.Because voltage height (reaching more than 100,000 volts), electric current big (reaching tens kilo-amperes), circuit breaker must produce harmful electric arc (arcing) between its dynamic and static contact when separating brake.In order to reduce the harm of arcing, dynamic/static contact has all been done modular design.To disconnect earlier when wherein moving contact component is mainly by separating brake thus the moving main contact of not arcing and after disconnect thereby moving arcing contact two parts of bearing arcing and anti-burning are formed.But, the domestic and international at present product of producing, its moving arcing contact keeps durable inadequately with the degree of being close to that is connected that conducts electricity between the pull bar because of Structure Designing Problem, can in use increase the resistance between the two gradually, make originally and should not the starting the arc also when separating brake, not produce arcing between the moving main contact of anti-burning and the quiet main contact because of above-mentioned resistance increases at this, and then cause the main contact scaling loss, reduced the useful life of equipment.
(3) utility model content:
The purpose of the utility model design is that the degree of being close to that is connected that solves in the existing SF 6 arc-extinguishing chamber of circuit breaker between the moving arcing contact and conduction pull bar does not keep enough durable, makes between main contact and the quiet main contact and to produce the problem of arcing scaling loss when the separating brake because of Structure Designing Problem, thereby provides a kind of moving arcing contact that can make to be connected the lasting novel moving contact component of avoiding main contact to burn of degree of being close between the pull bar with conducting electricity.
The utility model design is:
The anti-moving contact component that burns of sulfur hexafluoride breaker, be made up of the moving main contact of conduction pull bar, intake valve, movable contact headstock, piston type of hollow, the moving arcing contact that is positioned at above-mentioned conduction pull bar upper end, the spout cover of this moving arcing contact outside and top spout thereof, the improvement of being done is:
The flank of tooth disc spring pad that between described conduction pull bar and moving arcing contact, adds the hard and annular that material that conduct electricity very well is made of a usefulness.
After having added the flank of tooth disc spring pad of an annular between conduction pull bar and the moving arcing contact, this flank of tooth disc spring pad is after the moving contact component assembling, its two-sided close tooth pressure can be gone in the conduction pull bar end face and moving arcing contact end face of contact with it, increased the contact area between the three, simultaneously its elastic force can make between the conduction pull bar that is connected with the spout cover threadably and the moving arcing contact and keep being close to always, thus prevent therebetween that resistance increases and and then anti-stop main contact and quiet main contact between when separating brake generation electric arc.
(4) description of drawings:
Fig. 1 is the anti-assembly front view that burns of this sulfur hexafluoride breaker moving contact;
Fig. 2 is with the anti-SF 6 arc-extinguishing chamber of circuit breaker front view that burns assembly of this moving contact;
Fig. 3 is the flank of tooth disc spring pad front view and the vertical view of annular.
Each parts is among Fig. 1: the flank of tooth disc spring pad (6) of the conduction pull bar (2) of hollow, intake valve (4), movable contact headstock (5), annular, the moving main contact (7) of piston type, quincunx moving arcing contact (8), spout cover (9), spout (10).
Each parts is among Fig. 2: movable contact headstock tube (1), moving contact (16), outlet (17) down (inlet wire is positioned at stationary contact headstock tube 12 places, draws), guiding (18), casing (19) in the middle of the conduction pull bar (2) of hollow, adjusting pressure valve (3), intake valve (4), movable contact headstock (5), the flank of tooth disc spring pad (6) of annular, the moving main contact (7) of piston type, quincunx moving arcing contact (8), spout cover (9), spout (10), metal envelope tube (11), an insulator (12), stationary contact headstock tube (13), quiet arc contact (14), quiet main contact (15), cylinder type move.Be full of sulfur hexafluoride gas in the metal envelope tube (11).
The flank of tooth disc spring pad (6) of annular shown in Figure 3, close tooth all is with in top and bottom.
(5) embodiment:
Above-mentioned Fig. 1, Fig. 2 and Fig. 3 are the diagram that embodiment of the present utility model is embodiment.The knot accompanying drawing specifies below:
As can be seen from Figure 2, when circuit breaker begins the separating brake action, first separating between the moving main contact 7 of piston type and the quiet main contact 15, and still be in contact condition between quincunx moving arcing contact 8 and the quiet arc contact 14, if this moment, moving arcing contact 8 contacted between the pull bar 2 well with conduction, electric current can all flow through quiet arc contact 14, moving arcing contact 8 and conduction pull bar 2, moving main contact 7 can not produce arcing with quiet main contact 15; Otherwise, if quincunx moving arcing contact 8 contacts between the pull bar 2 bad with conduction, just obstructed when electric current is flowed through quiet arc contact 14, moving arcing contact 8 and conduction pull bar 2, just may produce arcing between moving main contact 7 and the quiet main contact 15 in their separated moments.
As can be seen from Figure 1, the movable contact headstock 5 of fixedlying connected with conduction pull bar 2 upper ends is threaded with spout cover 9; Be threaded by this, make the closely contact mutually of conduction pull bar 2, flank of tooth disc spring pad 6, moving arcing contact 8 three's contact-making surfaces, and the close tooth in the top and bottom that make flank of tooth disc spring pad 5 is pressed into moving arcing contact 8 lower surfaces and conduction pull bar 2 upper surfaces respectively, and the elastic force of flank of tooth disc spring pad 6 is kept the contact between the three, and then guarantee that the resistance between moving arcing contact 8 and the conduction pull bar 2 can in use not increase, thereby avoid producing arcing in their separated moments between moving main contact 7 and the quiet main contact 15.And if do not have flank of tooth disc spring pad 6, being threaded that movable contact headstock 5 and spout cover 9 are done will be in use loosening gradually, resistance between conduction pull bar 2 and the moving arcing contact 8 is increased, and then make between main contact 7 and the quiet main contact 15 in their separated moment generation arcings.
Since the flank of tooth disc spring pad 6 among Fig. 3 be good with conduction, modulus of elasticity is big and make than conduction pull bar 2 and all high material of moving arcing contact 8 material hardness, thereby can guarantee that being pressed into of in installation tooth acts on and the maintenance effect of elastic force.
The utility model shows through on probation and test, can avoid fully producing arcing between moving main contact 7 and the quiet main contact 15.
Claims (1)
1, the anti-moving contact component that burns of sulfur hexafluoride breaker, form by hollow conduction pull bar (2), intake valve (4), movable contact headstock (5), the moving main contact (7) of piston type, the moving arcing contact (8) that is positioned at conduction pull bar (2) upper end, the spout cover (9) of moving arcing contact (8) outside and top spout (10) thereof, it is characterized in that:
Between conduction pull bar (2) and moving arcing contact (8), there is a usefulness firmly and the flank of tooth disc spring pad (6) of the annular made of the material that conducts electricity very well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01279415 CN2512100Y (en) | 2001-12-25 | 2001-12-25 | Anti-burn movable contact assembly for SF6 circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01279415 CN2512100Y (en) | 2001-12-25 | 2001-12-25 | Anti-burn movable contact assembly for SF6 circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512100Y true CN2512100Y (en) | 2002-09-18 |
Family
ID=33682656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01279415 Expired - Fee Related CN2512100Y (en) | 2001-12-25 | 2001-12-25 | Anti-burn movable contact assembly for SF6 circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512100Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349521A (en) * | 2019-08-09 | 2021-02-09 | 河南平芝高压开关有限公司 | Circuit breaker and resistor fracture contact thereof |
-
2001
- 2001-12-25 CN CN 01279415 patent/CN2512100Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349521A (en) * | 2019-08-09 | 2021-02-09 | 河南平芝高压开关有限公司 | Circuit breaker and resistor fracture contact thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |