CN201378537Y - Isolating switch with fast separating function - Google Patents
Isolating switch with fast separating function Download PDFInfo
- Publication number
- CN201378537Y CN201378537Y CN200920117145U CN200920117145U CN201378537Y CN 201378537 Y CN201378537 Y CN 201378537Y CN 200920117145 U CN200920117145 U CN 200920117145U CN 200920117145 U CN200920117145 U CN 200920117145U CN 201378537 Y CN201378537 Y CN 201378537Y
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- CN
- China
- Prior art keywords
- moving contact
- contact
- fast
- isolating switch
- axle center
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- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model provides an isolator with divide function soon, includes moving contact, the operating mechanism of control moving contact motion and the static contact corresponding with the moving contact, its characterized in that: the quick-acting power distribution contact is characterized by further comprising a quick-acting power distribution contact, wherein one side of the quick-acting power distribution contact is sleeved in the moving contact, the other side of the quick-acting power distribution contact is in close contact with the conductive part of the fixed contact, a spring is arranged between the quick-acting power distribution contact and the moving contact, and the quick-acting power distribution contact is electrically connected with the moving. The time of generating electric arc is very short when the isolating switch is opened, thereby ensuring that the contact is not easily burnt by the electric arc.
Description
Technical field
The utility model relates to a kind of switch, particularly a kind of isolating switch with fast minute function.
Background technology
Isolating switch is the critical elements in the electric power system, the main effect of common isolating switch is the isolation circuit, sets up the isolated insulation fracture, special isolating switch as: be used for such as the rated voltage 72.5kV of double bus scheme and bypass connection and above bus isolating switch, except realizing above basic function, also must be used for conversion line, this inevitable requirement folding bus switching current (being commonly called as circulation).The problem of the existence of above isolating switch is: adopt conventional electronic actuating or man-operating mechanism, divide-shut brake speed is slower, during the folding electric current arcing time longer, arc-control device is not established in switch inside, the contact of easily ablating, especially GIS (SF
6Fully closed combined electric unit) bus isolating switch in the equipment can produce the metal splash at folding bus switching current during arcing, causes the insulator surface pollution severity, directly influences the interior insulation property of GIS.
The arc erosion contact that produces when preventing isolating switch folding electric current, generally can take following improvement:
(1) improves operating mechanism (the cephalomotor mechanism of control movable contact), adopted the electric spring mechanism at dead point, to improve the divide-shut brake speed of isolating switch.
(2) device that installing has certain arc extinguishing ability in the isolating switch body is as the arc control device of similar in patterns such as the air pressing type of circuit breaker, self extinguishing type, magnetic drivings.
(3) structure of contact terminal improves, fixed contact place installing striking copper-tungsten rod, and installing one section copper-tungsten piece in moving contact end improves the anti-electric arc ability of contact.
After taking above-mentioned corrective measure, though can significantly improve the ability of the folding bus switching current of isolating switch, but the problem of doing existence like this is: the structure of operating mechanism and Switch main body is complicated more or cause that dynamic and static contact producting process difficulty increases, and causes product cost to rise.Concerning the GIS product, because the volume of GIS product own is little, to arrange compactly, connection bus is shorter, and the isolating switch that these structures are too complicated is installed in the GIS product and is not suitable for.
The utility model content
The technical problems to be solved in the utility model provides that a kind of opening velocity is very fast, during separating brake the arcing time shorter, the isolating switch with fast minute function.
The inventor is by to cut-offfing studies show that of bus switching current, and when the isolating switch opening velocity was slow, the melt electrode that electric arc produces dispersed to movable side intensely; And when opening velocity was very fast, the arcing time shortened, and did not have melt electrode to disperse.When cut-offfing the bus switching current, specified bus changing voltage is very low, air-insulated isolating switch generally is no more than 40V (long bus occasion is 100V), gas isolated isolating switch generally is no more than 100V, for air insulated isolation switch, even utilize and simply to cut-off, moving contact component has higher speed (more than 1m/s), just reliably blow-out in several millimeters of the backs as long as guarantee just to divide.
Based on above theory analysis, the utility model adopts following technical scheme:
A kind of isolating switch with fast minute function, comprise moving contact, control the cephalomotor operating mechanism of movable contact and with the corresponding fixed contact of moving contact, it is characterized in that: also comprise fast minute moving contact, should divide moving contact one side to be sleeved in the described moving contact soon, opposite side closely contacts with the current-carrying part of described fixed contact, be provided with spring fast the branch between moving contact and the moving contact, divides moving contact to be electrically connected with moving contact soon.
Further, described moving contact front end is a circular cylindrical cavity, and the cavity front end edge is circumferentially with back-up ring; Fast branch moving contact is the cup that has the axle center post, and post rear end, axle center is along being circumferentially with block; The fast cup socket moving contact front end that divides moving contact, its axle center post inserts in the cavity of moving contact, and the diameter of axle center post block is greater than the diameter of cavity back-up ring, thereby makes fast minute moving contact and moving contact realize suit; Spring is placed in the space of cavity, axle center post and back-up ring, block formation.
Moving contact and fast the branch are provided with the lead that is flexible coupling between the moving contact, thereby fast minute moving contact is electrically connected with moving contact.Also can be that moving contact and fast the branch between the moving contact are provided with banded fingertip, thereby fast minute moving contact is electrically connected with moving contact.
The conductive part of described fixed contact is surrounded with spring especially.
The outer surface of described fixed contact is provided with radome.
Adopt such technical scheme, driving the insulation rotating shaft by operating mechanism rotates, and then make moving contact when motion compression or extension spring, when spring action in the power of fast minute moving contact during greater than fast frictional force of dividing between moving contact and the fixed contact, the fast moving contact setting in motion that divides, leave the moment of fixed contact fully when fast minute moving contact, frictional force between fast branch moving contact and the fixed contact disappears, be accumulated in the energy abrupt release in the spring, make the moment acceleration of fast minute moving contact away from fixed contact, divide the speed of moving contact to reach more than the 1m/s soon in several millimeters after can allowing the two just separate during design, the time that produces electric arc like this is very short, thereby has guaranteed that contact is difficult for by electric arc burn.Moving contact, to divide the static contact finger in moving contact and the fixed contact soon all be electric conductor, connect fast moving contact and the moving contact of dividing with lead or banded fingertip, can make between the two be electrically connected more stable, is to utilize the tension force of spring that static contact finger is closely contacted with the fast moving contact that divides at the static contact finger outer surface of fixed contact around the purpose of spring, can strengthen fast electrical connection stability of dividing between moving contact and the fixed contact when closing a floodgate like this.Adopt the isolating switch of technique scheme, make simply, quality is better, working stability, and useful life is longer.
Description of drawings
Fig. 1 is isolating switch embodiment 1 structural representation that the utlity model has fast minute function.
Fig. 2 is isolating switch embodiment 2 schematic diagrames that the utlity model has fast minute function.
Embodiment
Embodiment 1:
As shown in Figure 1, have the isolating switch of fast minute function, comprise moving contact 1, the insulation rotating shaft 4 that divides moving contact 2, fixed contact 3 and control moving contact 1 to move soon.Fixed contact 3 comprises stationary contact headstock 34, retainer 33, static contact finger 31 and tensioning spring 32, and static contact finger 31 is connected on the stationary contact headstock 34, is surrounded with tensioning spring 32 on the circumference of static contact finger 31, and fixed contact 3 outer surfaces are provided with radome 35.
The fast moving contact 2 that divides is for having the cup of axle center post 21, and the blind end of cup is plugged in the fixed contact 3.Fast other end socket moving contact 1 front end that divides moving contact 2, moving contact 1 front end is provided with circular cylindrical cavity 11, and circular cylindrical cavity 11 front end edges are circumferentially with back-up ring 7, divide the axle center post 21 of moving contact 2 to insert in the circular cylindrical cavity 11 soon.The rear end of axle center post 21 is along being circumferentially with block 6, and the diameter of block 6 is greater than the diameter of back-up ring 7, thereby makes fast minute moving contact 2 realize suit with moving contact 1.Spring 5 is enclosed within on the axle center post 21, is placed in the space of cavity 11, axle center post 21 and back-up ring 7, block 5 formation.
The rear end of axle center post 21 is by screw 22 lead 8 one ends that fixedly are flexible coupling, and the other end of the lead 8 that is flexible coupling is fixed on the moving contact 1 by pin 12, and the lead 8 that is flexible coupling makes moving contact 1 realize being electrically connected with the fast moving contact 2 that divides.
Embodiment 2:
As shown in Figure 2, have the isolating switch of fast minute function, comprise moving contact 1, the insulation rotating shaft 4 that divides moving contact 2, fixed contact 3 and control moving contact 1 to move soon.Fixed contact 3 comprises stationary contact headstock 34, retainer 33, static contact finger 31 and tensioning spring 32, and static contact finger 31 is connected on the stationary contact headstock 34, is surrounded with tensioning spring 32 on the circumference of static contact finger 31, and fixed contact 3 outer surfaces are provided with radome 35.
The fast moving contact 2 that divides is for having the cup of axle center post 21, and the blind end of cup is plugged in the fixed contact 3.Fast other end socket moving contact 1 front end that divides moving contact 2, moving contact 1 front end is provided with cavity 11, and circular cylindrical cavity 11 front end edges are circumferentially with back-up ring 7, divide the axle center post 21 of moving contact 2 to insert in the circular cylindrical cavity 11 soon.The rear end of axle center post 21 is along being circumferentially with block 6, and the diameter of block 6 is greater than the diameter of back-up ring 7, thereby makes fast minute moving contact 2 realize suit with moving contact 1.Spring 5 is enclosed within on the axle center post 21, is placed in the space of cavity 11, axle center post 21 and back-up ring 7, block 6 formation.
The front end edge of moving contact 1 is circumferentially with banded fingertip 9, and this band shape fingertip 9 closely contacts with the fast moving contact 2 that divides, and makes moving contact 1 realize being electrically connected with the fast moving contact 2 that divides.
Claims (6)
1, a kind of isolating switch with fast minute function, comprise moving contact, control the cephalomotor operating mechanism of movable contact and with the corresponding fixed contact of moving contact, it is characterized in that: also comprise fast minute moving contact, should divide moving contact one side to be sleeved in the described moving contact soon, opposite side closely contacts with the current-carrying part of described fixed contact, be provided with spring fast the branch between moving contact and the moving contact, divides moving contact to be electrically connected with moving contact soon.
2, according to the described isolating switch of claim 1, it is characterized in that: described moving contact front end is a circular cylindrical cavity, and the cavity front end edge is circumferentially with back-up ring; Fast branch moving contact is the cup that has the axle center post, and post rear end, axle center is along being circumferentially with block; The fast cup socket moving contact front end that divides moving contact, its axle center post inserts in the cavity of moving contact, and the diameter of axle center post block is greater than the diameter of cavity back-up ring, thereby makes fast minute moving contact and moving contact realize suit; Spring is placed in the space of cavity, axle center post and back-up ring, block formation.
3, according to the described isolating switch of claim 1, it is characterized in that: moving contact and fast the branch are provided with the lead that is flexible coupling between the moving contact, thereby fast minute moving contact is electrically connected with moving contact.
4, isolating switch according to claim 1 is characterized in that: moving contact and fast the branch between the moving contact are provided with banded fingertip, thereby fast minute moving contact is electrically connected with moving contact
5, according to each described isolating switch of claim 1 to 4, it is characterized in that: the current-carrying part of described fixed contact is surrounded with spring outward.
6, according to each described isolating switch of claim 1 to 4, it is characterized in that: the outer surface of described fixed contact is provided with radome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920117145U CN201378537Y (en) | 2009-04-03 | 2009-04-03 | Isolating switch with fast separating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920117145U CN201378537Y (en) | 2009-04-03 | 2009-04-03 | Isolating switch with fast separating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201378537Y true CN201378537Y (en) | 2010-01-06 |
Family
ID=41518656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920117145U Expired - Fee Related CN201378537Y (en) | 2009-04-03 | 2009-04-03 | Isolating switch with fast separating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201378537Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527220B (en) * | 2009-04-03 | 2011-06-15 | 浙江开关厂有限公司 | Isolating switch with quick break function |
| CN104952648A (en) * | 2015-06-19 | 2015-09-30 | 中国西电电气股份有限公司 | Grounding switch device |
-
2009
- 2009-04-03 CN CN200920117145U patent/CN201378537Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101527220B (en) * | 2009-04-03 | 2011-06-15 | 浙江开关厂有限公司 | Isolating switch with quick break function |
| CN104952648A (en) * | 2015-06-19 | 2015-09-30 | 中国西电电气股份有限公司 | Grounding switch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20110403 |