CN202601395U - Combined type vacuum switch - Google Patents
Combined type vacuum switch Download PDFInfo
- Publication number
- CN202601395U CN202601395U CN 201220135413 CN201220135413U CN202601395U CN 202601395 U CN202601395 U CN 202601395U CN 201220135413 CN201220135413 CN 201220135413 CN 201220135413 U CN201220135413 U CN 201220135413U CN 202601395 U CN202601395 U CN 202601395U
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- rotating disk
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Abstract
The utility model discloses a combined type vacuum switch. The vacuum switch serves as a D connection switch of a special transformer with voltage classes of 35KV and below can comprises a changing-over switch and a selective switch, wherein a changing-over core of the changing-over switch comprises a changing-over core rotating shaft made of drawing section bars, an insulation support, a change-over switch insulation rotating disk, a load cam and a transition cam, the insulation support, the change-over switch insulation rotating disk, the load cam and the transition cam are installed from top to bottom, the change-over switch insulation rotating disk is connected with and drives a resistance change-over switch, and a vacuum tube is arranged at the bottom of the changing-over core. According to the combined type vacuum switch, a D connection method of a transformer coil can be achieved in the changing-over core of one switch, arc extinction is achieved by using the vacuum tube, insulating oil can not be carbonized, a contact is not required to be replaced, and the service life is long.
Description
Technical field
The utility model relates to the packet type switch that cooperates transformer to use, and the D that particularly uses an on load tap changer can satisfy transformer coil connects the composite type vacuum switch of method.
Background technology
At present transformer commonly used connects method has two kinds of Y and D.Be used for the shunting switch that Y connects method, generally adopt neutral point to be fixed on the form on the shunting switch, just the shunting switch of this form can only be used for the transformer that Y connects method.For some transformer, can not use neutral point to be fixed on the switch on the shunting switch, this switch is called the end and connects the method shunting switch.The end connects the method shunting switch and both can be used for D and connect transformer, also can be used for Y and connects transformer, and for example the Y auto-transformer that connects method generally all will connect the method shunting switch with the end.The composite type shunting switch generally adopts neutral point to be fixed on the form on the shunting switch, only support Y to connect the transformer of method, so the scope of application has limitation.
At present; Domestic manufacturer does not still have D and is connected to the on-load shunting switch supply; Transformer is as adopting the Dd joint group mode of connection just with three single-phase switchs or two (typical MSI+MSII) on load tap changeres, and transformer has increased cost of goods manufactured along with the annex cost increases nature like this, and the raising of price adds the understanding mistaken ideas; Cause the very considerable Dd bind mode of advanced technology economical operation benefit to be out in the cold; The contradiction that D connects with the price of on load tap changer and customer demand has restricted the industrial transformer adopting of Dd wiring, and the UZ type switch that ABB switch manufacturer releases has solved some demands, but its expensive price has restricted a large amount of employings of this type switch.
Summary of the invention
The goal of the invention of the utility model is in order to overcome the defective in the above-mentioned background technology; Provide a kind of cost low; And the D that uses an on load tap changer can satisfy transformer coil connects the composite type vacuum switch of method, and this switch adopts vacuum tube arc extinguishing, and also having insulating oil can carbonization; Need not to change contact, the advantage that the life-span is long.
The technical scheme of the utility model is: a kind of composite type vacuum switch, comprise diverter switch assembly and selector switch assembly, and the diverter switch assembly comprises the flange assembly on top; The grease chamber and the switch core at middle part, the switch quick mechanism of bottom is connected to the selector switch assembly under the switch quick mechanism; The selector switch assembly is used to connect the tap of transformer; Described switch core includes the switch core rotating shaft of adopting the pulling section bar, and on down insulating support, reversing switch insulation rotating disk, load cam, the transition cam of dress, two cams adopt the bowl-type ripple structions; Reversing switch insulation rotating disk is provided with tank structure; Insulating support is provided with the short circuit and the single-double transition switch of roller structure, and reversing switch insulation rotating disk connects drive resistance commutation switch, and the switch core bottom is provided with vacuum tube.
Vacuum tube is for adopting the circuit design of duplex tube list resistor transition.
The beneficial effect of the utility model is: load cam and transition cam adopt the bowl-type ripple struction; The tank structure of reversing switch insulation rotating disk; The space multistory structure of the transition roller contact of the short circuit of roller structure and single-double transition switch has all increased each alternate creepage distance of switch, thereby the D that has satisfied switch connects requirement.Shorting switch adopts the roller type contact design, and switching power is little, flexibly, does not have and impacts, and the life-span is long.Adopted vacuum technique, frequent to industrial transformer pressure regulation number of times, tap changer step voltage at different levels is high, and the big particularly suitable of every grade switching capacity has prolonged the maintenance and the service time of transformer and switch, accomplishes few maintenance to a certain extent, and is non-maintaining.And duplex tube list resistor transition circuit design has reduced vacuum unit quantity, simplifies the structure, and compares with three vacuum tubes and four vacuum tubes, has improved reliability.Switch is every all to adopt two vacuum tubes mutually, and the vacuum tube between every phase has insulating barrier to separate.Transition resistance is contained between two vacuum tubes of homophase, and the height of whole switch core is reduced, compact conformation, and bulk strength is better.
Description of drawings
Fig. 1 is composite type vacuum switch overall structure figure;
Fig. 2 is a switch core external structure among Fig. 1;
Fig. 3 is the switch core cut-away view;
Fig. 4 is the diverter switch action sequence diagram;
Wherein: 1, flange assembly, 2, changeover module, 3, the switch quick mechanism, 4, the selector switch assembly; 21, switch core insulation board, 22, the switch core arc, 23, transition resistance, 31, the switch core rotating shaft; 32, insulating support, 33, roller structure short circuit and single-double transition switch, 34, reversing switch insulation rotating disk; 35, cam, 36, the resistance commutation switch, 37, vacuum tube.
Embodiment:
Composite type vacuum switch as shown in Figure 1; Comprise diverter switch assembly and selector switch assembly, the diverter switch assembly comprises the flange assembly (1) on top, the changeover module at middle part (2); Changeover module comprises grease chamber and switch core; The switch quick mechanism (3) of bottom is connected to selector switch assembly (4) under the switch quick mechanism, the selector switch assembly is used to connect the tap of transformer.Wherein switch upper flange assembly comprises travelling gear box, top cover, oil pick-up tube etc.Grease chamber and switch core (2) and tube end flange and switch upper flange assembly (1) are formed diverter switch jointly.Described grease chamber can prevent that the indoor sump oil of circuit-breaker oil from mixing with transformer body oil phase, and top, grease chamber is connected with the switch mounting flange, and the bottom, grease chamber is connected with flange at the bottom of grease chamber's tube, satisfies between switch and transformer tank wall and insulate.Described switch core is born the part of switchable load electric current specially.Described switch quick mechanism relies on spring energy-storage to discharge in order to the power source of diverter switch; It is to make contact system according to predetermined speed and program, carries out reliable device for switching fast.
The working method of this composite type vacuum switch is: the motor drive mechanism of transformer outside reaches switch quick mechanism (3) and selector switch (4) through the gearcase of the flange assembly (1) on switch top with power; Switch quick mechanism (3) through the bottom tube of the grease chamber of changeover module (2) at the bottom of the rotating shaft of flange spring energy-storage and the quick acting that discharges are passed to switch core, satisfy the quick requirement of switch handoff procedure thus.
Switch core as shown in Figure 2 outside comprises switch core insulation board (21), switch core arc (22), and transition resistance (23), wherein the connection that is used for going between on the switch core of switch core arc and electric current draws.
As shown in Figure 3; Switch quick mechanism (3) drives the rapid movement that the two both directions of switch list are carried out in switch core rotating shaft (31), thereby also drives the insulating support (32), roller structure short circuit and the single-double transition switch (33) that are fixed in the switch core rotating shaft (31), reversing switch insulation rotating disk (34), cam (35) rapid movement together.Cam (35) is load cam and two cams of transition cam, respectively control load vacuum tube and transition vacuum tube beat open and close and; Reversing switch insulation rotating disk (34) drives resistance commutation switch (36) through indexing mechanism.The diverter switch action sequence diagram is as shown in Figure 4.
Insulating support in the switch core, reversing switch insulation rotating disk, cam adopt the engineering insulating material, reach the requirement of switch industrial frequency withstand voltage.Cam adopts the bowl-type ripple struction; The tank structure of reversing switch insulation rotating disk; The space multistory structure of the roller contact of roller structure short circuit on the insulating support and single-double transition switch (33) has all increased each alternate creepage distance of switch, thereby the D that has satisfied switch connects requirement.Shorting switch adopts the roller type contact design, and switching power is little, flexibly, does not have and impacts, and the life-span is long.
The vacuum tube of present embodiment (37) is selected duplex tube list resistor transition circuit design for use, has reduced vacuum unit quantity, simplifies the structure, and compares with three vacuum tubes and four vacuum tubes, has improved reliability.Switch is every all to adopt two vacuum tubes mutually, and the vacuum tube between every phase has insulating barrier to separate.Transition resistance is contained between two vacuum tubes of homophase, and the height of whole switch core is reduced, compact conformation, and bulk strength is better.
The resistance commutation switch makes resistance side vacuum switch tube when normal operation, swing to active side all the time, has reduced the capacity that cut-offs of vacuum contact, has improved useful life.Circuit is provided with shorting switch, and the rated capacity of diverter switch is only relevant with the shorting switch rated capacity and the vacuum contact capacity irrelevant, thereby the low capacity vacuum switch tube can be used in the big capacity diverter switch.
Adopted vacuum technique, frequent to industrial transformer pressure regulation number of times, tap changer step voltage at different levels is high, and the big particularly suitable of every grade switching capacity has prolonged the maintenance and the service time of transformer and switch, accomplishes few maintenance to a certain extent, and is non-maintaining.
Claims (2)
1. a composite type vacuum switch comprises diverter switch assembly and selector switch assembly, and the diverter switch assembly comprises the flange assembly on top; The grease chamber and the switch core at middle part, the switch quick mechanism of bottom is connected to the selector switch assembly under the switch quick mechanism; The selector switch assembly is used to connect the tap of transformer; It is characterized in that described switch core includes the switch core rotating shaft of adopting the pulling section bar, and insulating support, reversing switch insulation rotating disk, load cam, the transition cam of dress from top to bottom, two cams adopt the bowl-type ripple structions; Reversing switch insulation rotating disk is provided with tank structure; Insulating support is provided with the short circuit and the single-double transition switch of roller structure, and reversing switch insulation rotating disk connects drive resistance commutation switch, and the switch core bottom is provided with vacuum tube.
2. composite type vacuum switch as claimed in claim 1 is characterized in that described vacuum tube is for adopting the circuit design of duplex tube list resistor transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135413 CN202601395U (en) | 2012-04-01 | 2012-04-01 | Combined type vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220135413 CN202601395U (en) | 2012-04-01 | 2012-04-01 | Combined type vacuum switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202601395U true CN202601395U (en) | 2012-12-12 |
Family
ID=47318927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220135413 Expired - Lifetime CN202601395U (en) | 2012-04-01 | 2012-04-01 | Combined type vacuum switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202601395U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189937A (en) * | 2019-06-21 | 2019-08-30 | 国家电网有限公司 | A kind of double-fracture vacuum has load switching switch |
| CN110189937B (en) * | 2019-06-21 | 2024-05-24 | 国家电网有限公司 | Double-break vacuum on-load change-over switch |
-
2012
- 2012-04-01 CN CN 201220135413 patent/CN202601395U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189937A (en) * | 2019-06-21 | 2019-08-30 | 国家电网有限公司 | A kind of double-fracture vacuum has load switching switch |
| CN110189937B (en) * | 2019-06-21 | 2024-05-24 | 国家电网有限公司 | Double-break vacuum on-load change-over switch |
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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: 20121212 |