CN203260522U - Rapid grounding switch - Google Patents
Rapid grounding switch Download PDFInfo
- Publication number
- CN203260522U CN203260522U CN 201320183171 CN201320183171U CN203260522U CN 203260522 U CN203260522 U CN 203260522U CN 201320183171 CN201320183171 CN 201320183171 CN 201320183171 U CN201320183171 U CN 201320183171U CN 203260522 U CN203260522 U CN 203260522U
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- contact
- static
- moving
- high speed
- grounding switch
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Abstract
The utility model provides a rapid grounding switch. The switch comprises a spring mechanism, a grounding housing, moving contact assemblies, and static contact base assemblies. The spring mechanism is connected to the grounding housing, and drives the moving contact assemblies to touch the static contact base assemblies. A movable static contact in each moving contact assembly touches one of the static contact base assemblies, and is in sleeve joint with a static contact in the static contact base assembly. The switch changes the conventional touch and connection methods. The movable static contacts in the moving contact assemblies are in sleeve joint with the static contacts in the static contact base assemblies, so that the moving contact assemblies are connected to the static contact base assemblies more closely. The switch is safe and reliable, with a simple structure, a small size and stable motions.
Description
Technical field
The utility model relates to a kind of power high voltage switchgear, specifically refers to the high speed grounding switch that uses in high-voltage electric power system.
Background technology
In high voltage supply system, when supply line or device fails, need to carry out ground connection to fault loop, in order to eliminate the danger that failure system produces.In the practice, make security context for the maintenance of giving electric power system, usually the fault high voltage supply system is connected with ground.In this grounding system, relate to a kind of high speed grounding switch, its function is high-pressure system to be connected with ground fast form the loop.High speed grounding switch is the important guarantee of safe operation of power system maintenance and the operation maintenance of high-voltage switch gear product safety.In the practical operation, higher to stability and the security requirement of high speed grounding switch.The high speed grounding switch moment of torsion is large among the GIS more than 110kV, and the operating work that needs is large, often needs to borrow external instrument just can be grounded combined floodgate.
In the prior art, the volume of high speed grounding switch is larger, and complex structure, and the speed of cut-offfing of ground connection fracture is slower, realizes that the quick-speed turning on-off induced current is very difficult, and arcing is difficult for extinguishing, and affects device security, stable operation.Supertension line is when adopting single-pole reclosing; if generation single phase ground fault; the protection action can be with the tripping of fault phase switch; healthy phases then continues operation, and the voltage of healthy phases can be sensed on the fault phase that switch tripped, in the serious situation like this; although the phase that can break down switch trips; but because faradic existence, the fault point has arc current to exist always, namely secondary arc current.Secondary arc current causes the fault point can not blow-out, and actual fault point equals just not eliminate, and closes a floodgate this moment can overlap undoubtedly to cause unsuccessful reclosing, divide-shut brake to move easy unstability on the fault point again.
The utility model content
For the deficiency that prior art exists, the technical problem that the utility model solves provides a kind of high speed grounding switch, simple in structure, small volume, having stable behavior.
For solving the problems of the technologies described above, technical solution adopted in the utility model is, a kind of high speed grounding switch, it comprises electric spring, ground connection housing, moving contact assembly, static contact seat assembly, electric spring connects the ground connection housing, and drive moving contact assembly touching static contact seat assembly, the moving arcing contact touching static contact seat assembly in the described moving contact assembly, and be socketed on the interior static arc contact of static contact seat assembly.
Above-mentioned high speed grounding switch, its moving contact assembly comprises the contact shell, and the contact shell is embedded with moving arcing contact, and the moving arcing contact outer setting is moved the arc spring touch finger.
Above-mentioned high speed grounding switch arranges annular groove on its moving arcing contact, and groove inwall coated copper tungsten alloy layer, and outwards extension and the turnover of copper-tungsten layer are coated on the moving arcing contact end face.
Above-mentioned high speed grounding switch, its static contact seat assembly comprises the touch base shell, the embedded static arc contact of touch base shell, static arc contact outer setting quiet arc spring touch finger.
Above-mentioned high speed grounding switch, its static arc contact outer wall coated copper tungsten alloy layer.
Static arc contact in the moving arcing contact moving linearly touching static contact seat assembly in the above-mentioned high speed grounding switch, its moving contact assembly.
Above-mentioned high speed grounding switch arranges ground insulation in its ground connection housing.
Above-mentioned high speed grounding switch arranges drive shaft and drives the moving contact assembly in its ground connection housing.
The utlity model has following advantage and useful technique effect:
1, high speed grounding switch of the present utility model, change original touching connected mode, moving arcing contact in the moving contact assembly is socketed on the static arc contact in the static contact seat assembly, so that being connected between moving contact assembly and the static contact seat assembly contacts is more tight.
2, high speed grounding switch of the present utility model, overall structure is simple, small volume, the moving arcing contact moving linearly touching static contact seat assembly in the moving contact assembly, having stable behavior.
3, high speed grounding switch of the present utility model can cooperate with single-pole reclosing, behind the fault phase switch trip, the rapid grounding disconnecting link of fault phase is incorporated into fast, fault phase is forced ground connection, eliminate secondary arc current, make the arc extinction of fault point, Failure elimination is for safety, the stable operation of switchgear provides effective guarantee.
4, high speed grounding switch coated copper tungsten alloy layer of the present utility model is more safe and reliable.
Description of drawings
Fig. 1 is gate-dividing state structural representation of the present utility model;
Fig. 2 is "on" position structural representation of the present utility model;
Fig. 3 is the side partial sectional view of Fig. 2;
Fig. 4 is moving contact assembly structural representation;
Fig. 5 is static contact seat assembly structural representation.
Among the above-mentioned figure:
1. electric spring; 2. ground connection housing; 3. moving contact assembly; 4. static contact seat assembly; 5. move the arc spring touch finger; 6. moving arcing contact; 7. copper-tungsten layer; 8. quiet arc spring touch finger; 9. static arc contact; 10. contact shell; 11. ground insulation is sub; 12. touch base shell; 13. drive shaft.
Embodiment
As shown in Figure 1, high speed grounding switch in the present embodiment, it comprises electric spring 1, ground connection housing 2, moving contact assembly 3, static contact seat assembly 4, and electric spring 1 connects ground connection housing 2, and drives the moving arcing contact 6 touching static contact seat assemblies 4 in the moving contact assembly 3.
As shown in Figure 2, the static arc contact 9 in the moving arcing contact 6 moving linearlies touching static contact seat assembly 4 in the moving contact assembly 3, the moving arcing contacts 6 in the moving contact assembly 3 are socketed on the static arc contact 9 in the static contact seat assembly 4.
As shown in Figure 3, ground connection housing 2 interior ground insulation 11 that arrange also arrange the moving arcing contact 6 that drive shaft 13 drives in the moving contact assembly 3 in the ground connection housing 2.
Shown in Fig. 1,2,3,4, moving contact assembly 3 comprises contact shell 10, contact shell 10 embedded moving arcing contacts 6, and moving arcing contact 6 outer setting are moved arc spring touch finger 5; The moving arcing contact 6 interior annular grooves that arrange, groove inwall coated copper tungsten alloy layer 7, and outwards extension and turnover of copper-tungsten layer 7 are coated on moving arcing contact 6 end faces.
Shown in Fig. 1,2,3,5, static contact seat assembly 4 comprises touch base shell 12, touch base shell 12 embedded static arc contacts 9, static arc contact 9 outer setting quiet arc spring touch fingers 8; Its static arc contact 9 outer wall coated copper tungsten alloy layers.
During the work operation:
Under the driving of electric spring 1, moving arcing contact 6 slides up and down in contact shell 10, and the end of moving arcing contact 6 is provided with groove, and static arc contact 9 projections of this groove and static contact seat assembly 4 inside cooperate, and realize good, stable contact.Static contact seat assembly 4 inner setting-in quiet arc spring touch fingers 8, when moving arcing contact 6 and static arc contact 9 routing motion, quiet arc spring touch finger 8 can guarantee that moving arcing contact 6 and static arc contact 9 stablize good cooperation.Further improve, moving arc spring touch finger 5 also is installed in moving arcing contact 6 peripheries, further optimized stability, accuracy and the fail safe of moving arcing contact 6 motions.
Coated copper tungsten alloy layer 7 is smeared the copper-tungsten layer at static arc contact 9 in the groove of moving arcing contact 6 ends, and this kind structure can make the more reliable and safety of high speed grounding switch.
Operation principle is as follows:
Discharge fast after electric spring 1 energy storage, drive moving arcing contact 6 to static arc contact 9 motions, dielectric insulation intensity between moving arcing contact 6 and the static arc contact 9 is greater than being applied to two voltages between the contact at this moment, along with Distance Shortened, when dielectric strength is reduced to less than the voltage between the contact gradually, namely when the distance between two contacts arrives maximum arcing distance, arcing occurs, be prebreakdown, until moving arcing contact and static arc contact touch, arc extinction more after a period of stabilisation, reaches complete make position at last.
The above, only be to preferred embodiment of the present utility model, be not to be that the utility model is done other forms of restriction, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every the utility model scheme content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to protection range of the present utility model according to technical spirit of the present utility model.
Claims (8)
1. high speed grounding switch, it comprises electric spring, ground connection housing, moving contact assembly, static contact seat assembly, electric spring connects the ground connection housing, and driving moving contact assembly touching static contact seat assembly, it is characterized in that: the moving arcing contact touching static contact seat assembly in the described moving contact assembly, and be socketed on the interior static arc contact of static contact seat assembly.
2. high speed grounding switch according to claim 1, it is characterized in that: described moving contact assembly comprises the contact shell, and the contact shell is embedded with moving arcing contact, the moving arcing contact outer setting is moved the arc spring touch finger.
3. high speed grounding switch according to claim 1 and 2 is characterized in that: on the described moving arcing contact annular groove is set, and groove inwall coated copper tungsten alloy layer, and the copper-tungsten layer outwards extends and turnover, is coated on the moving arcing contact end face.
4. high speed grounding switch according to claim 1, it is characterized in that: described static contact seat assembly comprises the touch base shell, the embedded static arc contact of touch base shell, static arc contact outer setting quiet arc spring touch finger.
5. it is characterized in that: described static arc contact outer wall coated copper tungsten alloy layer according to claim 1 or 4 described high speed grounding switches.
6. high speed grounding switch according to claim 1 is characterized in that: the static arc contact in the moving arcing contact moving linearly touching static contact seat assembly in the moving contact assembly.
7. high speed grounding switch according to claim 1 is characterized in that: in the described ground connection housing ground insulation is set.
8. high speed grounding switch according to claim 1 is characterized in that: drive shaft is set in the described ground connection housing drives the moving contact assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183171 CN203260522U (en) | 2013-04-12 | 2013-04-12 | Rapid grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183171 CN203260522U (en) | 2013-04-12 | 2013-04-12 | Rapid grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203260522U true CN203260522U (en) | 2013-10-30 |
Family
ID=49473066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320183171 Expired - Lifetime CN203260522U (en) | 2013-04-12 | 2013-04-12 | Rapid grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203260522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448549A (en) * | 2015-11-25 | 2016-03-30 | 河南平芝高压开关有限公司 | Contact assembly and grounding switch using the same, metal-enclosed switchgear |
-
2013
- 2013-04-12 CN CN 201320183171 patent/CN203260522U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448549A (en) * | 2015-11-25 | 2016-03-30 | 河南平芝高压开关有限公司 | Contact assembly and grounding switch using the same, metal-enclosed switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |