CN201038601Y - Small-sized vacuum ring main unit - Google Patents
Small-sized vacuum ring main unit Download PDFInfo
- Publication number
- CN201038601Y CN201038601Y CNU2007200363443U CN200720036344U CN201038601Y CN 201038601 Y CN201038601 Y CN 201038601Y CN U2007200363443 U CNU2007200363443 U CN U2007200363443U CN 200720036344 U CN200720036344 U CN 200720036344U CN 201038601 Y CN201038601 Y CN 201038601Y
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- China
- Prior art keywords
- contact
- vacuum
- switch
- operating mechanism
- isolating
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- Expired - Lifetime
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a small vacuum ring main unit in the field of switch electric appliance, which comprises a vacuum switch arranged in the unit, an isolating switch, a round main bus-bar and a sleeve. Wherein, the vacuum switch consists of a vacuum arc extinguish chamber, a vacuum switch operation mechanism and an insulation pull rod; the isolating switch is formed by a static contact, a contact knife, an isolating pull rod, an earthing contact, an operation mechanism for the isolating switch and a dynamic contact; wherein, the static contact is connected with the round main bus-bar. Moreover, the unit is internally provided with a hollow insulation seat with an open upper part, the isolating switch and the vacuum switch have the operation mechanisms fixed at the upper side of the insulation seat and the other components all positioned in the insulation seat. The dynamic contact of the isolating switch is fixed at the inner side of the insulation seat, and the dynamic contact and the vacuum arc extinguish chamber are flexibly connected in the insulation seat through a conductive material. Besides, the sleeve extends into the insulation seat and is connected with the static end of the lower end of the vacuum arc extinguish chamber. Without vacuumizing or inflating insulation gas into the insulation seat and the unit, the utility model has advantages of small volume and high reliability as well as simple and compact structure.
Description
Technical field
The utility model belongs to the device for switching technical field, particularly a kind of ring main unit.
Background technology
In the prior art, a kind of ring main unit is arranged, be included in the vacuum switch, isolating switch, circular main bus bar and the sleeve pipe that are provided with in the cabinet, this vacuum switch is made of vacuum interrupter, vacuum switch operating mechanism, insulated tension pole etc., vacuum switch operating mechanism and insulated tension pole interlock, the insulated tension pole lower end links to each other with the moving contact of vacuum interrupter, and the fixed contact of vacuum interrupter lower end links to each other with sleeve pipe one end; Described isolating switch is made of fixed contact, contact knife, isolation pull bar, grounding contact, isolator operating mechanism and moving contact, isolating the pull bar upper end links to each other with isolator operating mechanism, isolating the pull bar lower end links to each other with the contact knife middle part, contact knife one end and moving contact are hinged, the contact knife other end is corresponding with fixed contact and grounding contact respectively, when contact knife rotates around pin joint, can connect fixed contact or grounding contact respectively, fixed contact is connected with circular main bus bar; Isolator operating mechanism is interlocked mutually with the vacuum switch operating mechanism.When isolating switch during at closing position, vacuum switch closes a floodgate, this moment is because the interlocking effect of isolator operating mechanism and vacuum switch operating mechanism, isolating switch can not be opened, have only behind vacuum switch separating brake, isolating switch just can be opened, after isolating switch is opened, contact knife and grounding contact are connected, and can close vacuum switch this moment, and major loop is grounded through sleeve pipe, vacuum switch, contact knife, grounding contact.The vacuum ring main unit volume of domestic market is all bigger at present, general vacuum switch and isolating switch are two independently electric elements, connect with lead when being used in combination again, and therefore the volume ratio of common ring main unit is bigger, cost is also high, can not satisfy the requirement of ring main unit miniaturization; For realizing the ring main unit miniaturization, the current SF6 that can only select for use inflates cabinet, by in ring main unit, charging into SF6 gas (sulphur hexafluoride), alternate, the distance relatively of the conductor that can dwindle vacuum switch and isolating switch, avoid arc discharge, but one of gas of the destruction environment that SF6 gas is international convention to be assert should limit and eliminate gradually.
The utility model content
The purpose of this utility model provides a kind of small size vacuum ring main unit, makes its volume little, does not need to vacuumize, and also need not to fill insulating gas.
For achieving the above object, the small size vacuum ring main unit that the utility model provides, be included in the vacuum switch, isolating switch, circular main bus bar and the sleeve pipe that are provided with in the cabinet, described vacuum switch is made of vacuum interrupter, vacuum switch operating mechanism and insulated tension pole, vacuum switch operating mechanism and insulated tension pole interlock, the insulated tension pole lower end links to each other with the moved end of vacuum interrupter; Described isolating switch is made of fixed contact, contact knife, isolation pull bar, grounding contact, isolator operating mechanism and moving contact, isolating the pull bar upper end links to each other with isolator operating mechanism, isolating the pull bar lower end links to each other with the contact knife middle part, contact knife one end and moving contact are hinged, the contact knife other end is corresponding with fixed contact and grounding contact respectively, and fixed contact is connected with circular main bus bar; Isolator operating mechanism is interlocked mutually with the vacuum switch operating mechanism, be provided with the hollow insulating base of upper opening in the cabinet, isolator operating mechanism and vacuum switch operating mechanism are fixed on the insulating base upside, the remaining part of vacuum switch and isolating switch all is arranged in the insulating base, the moving contact of described isolating switch is fixed on the insulating base inboard, and moving contact and vacuum interrupter moved end are flexible coupling through electric conducting material in insulating base; Sleeve pipe stretches in the insulating base and links to each other with the quiet end of vacuum interrupter lower end.
When the utility model uses, some insulating bases can be set according to the number of phases of circular main bus bar, when isolating switch during at closing position, vacuum switch closes a floodgate, major loop is connected, this moment is because the interlocking effect of isolator operating mechanism and vacuum switch operating mechanism, isolating switch can not be opened, have only behind vacuum switch separating brake, isolating switch just can be opened, and after isolating switch was opened, contact knife and grounding contact were connected, can close vacuum switch this moment, and major loop is grounded through sleeve pipe, vacuum switch, contact knife, grounding contact.In the above-mentioned course of work, insulating base is isolated with the charged workpiece of each corresponding isolating switch and vacuum switch, improved the class of insulation, compared with prior art, the utility model need not vacuumize and charge into insulating gas in insulating base and cabinet, it is simple and compact for structure, and volume is little, the reliability height; This technical scheme makes ring main unit be able to realize miniaturization under the prerequisite of environmental protection.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the left view of Fig. 1.
Embodiment
As figure, be the small size vacuum ring main unit, be included in vacuum switch, isolating switch, circular main bus bar 5 and sleeve pipe 6 of being provided with in the cabinet 7 or the like, described vacuum switch is made of vacuum interrupter 9, vacuum switch operating mechanism 15 and insulated tension pole 13, vacuum switch operating mechanism 15 and insulated tension pole 13 interlocks, insulated tension pole 13 lower ends link to each other with the moved end 11 of vacuum interrupter 9; Described isolating switch is made of fixed contact 4, contact knife 3, isolation pull bar 2, grounding contact 14, isolator operating mechanism 1 and moving contact 10, isolating pull bar 2 upper ends links to each other with isolator operating mechanism, isolating pull bar 2 lower ends links to each other with contact knife 3 middle parts, contact knife 3 one ends and moving contact 10 are hinged, contact knife 3 other ends are corresponding with fixed contact 4 and grounding contact 14 respectively, when contact knife 3 rotates around pin joint, can connect fixed contact 4 or grounding contact 14 respectively, fixed contact 4 is connected with circular main bus bar 5; Isolator operating mechanism 1 is interlocked mutually with vacuum switch operating mechanism 15, be provided with the hollow insulating base 12 of upper opening in the cabinet 7, isolator operating mechanism 1 is fixed on insulating base 12 upsides with vacuum switch operating mechanism 15, the remaining part of vacuum switch and isolating switch all is arranged in the insulating base 12, the moving contact 10 of described isolating switch is fixed on insulating base 12 inboards, and moving contact 10 is flexible coupling through electric conducting material in insulating base 12 with vacuum interrupter 9 moved ends; Sleeve pipe 6 stretches in the insulating base 12 and links to each other with the quiet end of vacuum interrupter 9 lower ends.Every insulating base 12 can be formed a single-phase electricity air circuit, per three insulating bases can be formed a three-phase electricity air circuit unit, be that insulating base 12 can be set side by side with three, three-phase corresponding to power supply, an insulating base also can be set, and its inside is separated into and corresponding three separate space of three-phase electricity.Illustrated in figures 1 and 2 is three three-phase electricity air circuit unit, for working condition of observing isolating switch directly perceived, can observation window 16 be set on cabinet 7 tops, can observe the ground connection situation of the contact knife 3 of isolating switch by observation window; These outer cabinet 7 bottoms are provided with cable vault's door 17, so that maintenance.
During work, some insulating bases 12 can be set according to the number of phases of circular main bus bar 5, only behind the vacuum switch separating brake, just can disconnecting switch operation; When isolating switch during at closing position, vacuum switch closes a floodgate, major loop is connected, and this moment is because the interlocking effect of isolator operating mechanism 1 and vacuum switch operating mechanism 15 can not be opened isolating switch, have only behind vacuum switch separating brake, isolating switch just can be opened, and after isolating switch was opened, contact knife 3 was connected with grounding contact 14, can close vacuum switch this moment, and major loop is grounded through sleeve pipe 6, vacuum switch, contact knife 3, grounding contact 14.In the above-mentioned course of work, insulating base 12 is isolated with the charged workpiece of each corresponding isolating switch and vacuum switch, has improved the class of insulation.
The utility model is not limited to the foregoing description, as required, can make it to form two electric loop unit, three electric loop unit, four electric loop unit by a plurality of insulating bases are set, and also can be five even more a plurality of electric loops unit.
Claims (1)
1. small size vacuum ring main unit, be included in the vacuum switch, isolating switch, circular main bus bar and the sleeve pipe that are provided with in the cabinet, described vacuum switch is made of vacuum interrupter, vacuum switch operating mechanism and insulated tension pole, vacuum switch operating mechanism and insulated tension pole interlock, the insulated tension pole lower end links to each other with the moved end of vacuum interrupter; Described isolating switch is made of fixed contact, contact knife, isolation pull bar, grounding contact, isolator operating mechanism and moving contact, isolating the pull bar upper end links to each other with the isolator operation machine, isolating the pull bar lower end links to each other with the contact knife middle part, contact knife one end and moving contact are hinged, the contact knife other end is corresponding with fixed contact and grounding contact respectively, and fixed contact is connected with circular main bus bar; Isolator operating mechanism is interlocked mutually with the vacuum switch operating mechanism, it is characterized in that being provided with in the cabinet hollow insulating base of upper opening, isolator operating mechanism and vacuum switch operating mechanism are fixed on the insulating base upside, the remaining part of vacuum switch and isolating switch all is arranged in the insulating base, the moving contact of described isolating switch is fixed on the insulating base inboard, and moving contact and vacuum interrupter moved end are flexible coupling through electric conducting material in insulating base; Sleeve pipe stretches in the insulating base and links to each other with the quiet end of vacuum interrupter lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200363443U CN201038601Y (en) | 2007-04-06 | 2007-04-06 | Small-sized vacuum ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200363443U CN201038601Y (en) | 2007-04-06 | 2007-04-06 | Small-sized vacuum ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201038601Y true CN201038601Y (en) | 2008-03-19 |
Family
ID=39211125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200363443U Expired - Lifetime CN201038601Y (en) | 2007-04-06 | 2007-04-06 | Small-sized vacuum ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201038601Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543558A (en) * | 2012-01-13 | 2012-07-04 | 北京京东方真空电器有限责任公司 | Vacuum switch module for looped network cabinet |
| CN106786005A (en) * | 2016-11-14 | 2017-05-31 | 北京双杰电气股份有限公司 | A kind of high-tension switch cabinet |
| CN107706802A (en) * | 2017-10-31 | 2018-02-16 | 江苏亚开电气有限公司 | A kind of environment-friendly type air insulation AC metal enclosed ring network switch cabinet |
-
2007
- 2007-04-06 CN CNU2007200363443U patent/CN201038601Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543558A (en) * | 2012-01-13 | 2012-07-04 | 北京京东方真空电器有限责任公司 | Vacuum switch module for looped network cabinet |
| CN102543558B (en) * | 2012-01-13 | 2014-10-22 | 北京京东方真空电器有限责任公司 | Vacuum switch module for looped network cabinet |
| CN106786005A (en) * | 2016-11-14 | 2017-05-31 | 北京双杰电气股份有限公司 | A kind of high-tension switch cabinet |
| CN107706802A (en) * | 2017-10-31 | 2018-02-16 | 江苏亚开电气有限公司 | A kind of environment-friendly type air insulation AC metal enclosed ring network switch cabinet |
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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: 20080319 |