CN103280367A - Large current three-position double-fracture disconnecting switch - Google Patents
Large current three-position double-fracture disconnecting switch Download PDFInfo
- Publication number
- CN103280367A CN103280367A CN2013102340681A CN201310234068A CN103280367A CN 103280367 A CN103280367 A CN 103280367A CN 2013102340681 A CN2013102340681 A CN 2013102340681A CN 201310234068 A CN201310234068 A CN 201310234068A CN 103280367 A CN103280367 A CN 103280367A
- Authority
- CN
- China
- Prior art keywords
- contact
- moving
- moving knife
- contacts
- large current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a large current three-position double-fracture disconnecting switch. The large current three-position double-fracture disconnecting switch comprises moving cutters, a ground row, fixed contacts and moving cutter supports, wherein moving contact ends are arranged at the two ends of each moving cutter, each moving cutter comprises two contact pieces, and inner sides of the moving contact ends of the every two contact pieces are respectively provided with a contact face. The outer sides of the moving contact ends of the every two contact pieces are respectively provided with a magnetic locking plate, the moving contact ends and the magnetic locking plates of the every two contact pieces are connected through a bolt, and a belleville spring is arranged on the outer side of each magnetic locking plate. An arc-shaped pulling plate which is taken as a middle transmission component is eliminated, assembling difficulty is reduced, stress-bearing in contact is more even, and meanwhile current-carrying performance of the moving cutters are improved.
Description
Technical field
The present invention relates to a kind of isolating switch, relate in particular to a kind of big electric current three station double break mouth isolating switches.
Background technology
Isolating switch is to use maximum a kind of electrical equipment in the high-voltage switch electric appliance, and the operation principle of itself and relatively simple for structure, but because use amount is big, functional reliability requires high is all bigger to the influence of design, foundation and the safe operation of electric substation, power plant.
As shown in Figure 1, isolating switch of the prior art is three station single break structures, and its operating process is:
When moving knife turns to arc control device copper bar position, be "on" position; When moving knife forwards the moving knife Support Position to, be gate-dividing state; When moving knife turns to contact position, be ground state.
There is following shortcoming at least in above-mentioned prior art:
As shown in Figure 1, the axle with moving knife between be connected by the arc arm-tie, not only make the structure of isolating switch more complicated, also improved manufacturing cost; As shown in Figure 2, moving knife contacts to the some contact with contact, has reduced ampacity; Do not have corresponding fasteningly between the moving knife, after the multi-pass operation, may cause the loosening of moving knife, influence the break performance of isolating switch.
Summary of the invention
The purpose of this invention is to provide that a kind of assembly difficulty is low, when contact stressed evenly, big electric current three station double break mouth isolating switches that the current-carrying performance is high.
The objective of the invention is to be achieved through the following technical solutions:
Big electric current three station double break mouth isolating switches of the present invention, comprise moving knife, arrange, fixed contact, moving knife support, the two ends of described moving knife are the movable contact end, described moving knife comprises two contacts, the inboard of the movable contact end of two contacts is respectively equipped with contact-making surface.
As seen from the above technical solution provided by the invention, the big electric current three station double break mouth isolating switches that the embodiment of the invention provides, because the two ends of moving knife are the movable contact end, moving knife comprises two contacts, and the inboard of the movable contact end of two contacts is respectively equipped with contact-making surface.Moving knife is the double-gate structure, has cancelled the arc arm-tie as middle drive disk assembly, has reduced assembly difficulty; Moving knife with isolate to support or contacting of ground row is the face contact, stressed more even when not only making contact also improved the current-carrying performance of moving knife simultaneously.
Description of drawings
Fig. 1 is the structural representation of isolating switch in the prior art;
Fig. 2 is the partial structurtes schematic diagram of isolating switch in the prior art;
The structural representation of the big electric current three station double break mouth isolating switches that Fig. 3 provides for the embodiment of the invention;
Fig. 4 is the view of station one in the embodiment of the invention;
Fig. 5 is the view of station two in the embodiment of the invention;
Fig. 6 is the view of station three in the embodiment of the invention;
Fig. 7 is the structural representation of moving knife contact in the embodiment of the invention;
Fig. 8 is the mounting structure schematic diagram of magnetic padlock plate in the embodiment of the invention.
Among the figure:
01, axle, 02, the arc arm-tie, 03, moving knife supports, 04, the arc control device copper bar, 05, moving knife, 06, contact, 07, contact point;
1, arranges 2, moving knife, 3, moving knife supports, 4, fixed contact, 5, contact-making surface, 6, the butterfly spring, 7, the magnetic padlock plate.
Embodiment
To be described in further detail the embodiment of the invention below.
Big electric current three station double break mouth isolating switches of the present invention, its preferable embodiment is:
Comprise moving knife, arrange, fixed contact, moving knife support, the two ends of described moving knife are the movable contact end, described moving knife comprises two contacts, the inboard of the movable contact end of two contacts is respectively equipped with contact-making surface.
The outside of the movable contact end of two contacts is respectively equipped with the magnetic padlock plate.
Connect by bolt between the movable contact end of described two contacts and the magnetic padlock plate, the outside of described magnetic padlock plate is provided with the butterfly spring.
The present invention after rated current increases to 1250A by 630A, makes amendment to the structure of isolating switch on the basis of existing 630A isolating switch, can reach normal electric current by 1250A.Improve its break performance simultaneously, and reduced the manufacturing cost of isolating switch.
Specific embodiment:
As shown in Figure 3,1250A is big, and electric current three station double break mouth isolating switches are three station double break mouth structures, compare the 630A isolating switch, and fracture is more obvious, has increased the break performance of isolating switch.Wherein, moving knife is the double-gate structure, and the corner of main shaft is 60 degree.Its operating process is:
When moving knife turns to as shown in Figure 4 the position, be "on" position;
When moving knife forwards as shown in Figure 5 the position to, be gate-dividing state;
When moving knife turns to as shown in Figure 6 the position, be ground state.
Cancelled the arc arm-tie as middle drive disk assembly, compared with the 630A isolating switch, the integration more of the structure of 1250 isolating switches has reduced assembly difficulty.
As shown in Figure 7, moving knife adopts the in line structure of double-pole of 50X5, and single blade length is 250mm, silver-plated processing is adopted on the surface, moving knife with isolate to support or contacting of ground row is the face contact, stressed more even when not only making contact also improved the current-carrying performance of moving knife simultaneously.
As shown in Figure 8, at the shortcoming of 630A isolating switch, the present invention has added the magnetic padlock plate between two moving knife, to solve the problem that moving knife becomes flexible easily after multi-pass operation.Wherein, the magnetic padlock plate is fixed with the dish spring, has satisfied contact pressure.
The beneficial effect of specific embodiment is:
Cancel the arc arm-tie as middle drive disk assembly, reduced the manufacturing cost of isolating switch greatly;
Having passed through rated current smoothly is temperature rise test, mechanical endurance test and the Insulation Test of 1250A, is qualified electric product.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (3)
1. one kind big electric current three station double break mouth isolating switches, comprise moving knife, arrange, fixed contact, moving knife support, and it is characterized in that the two ends of described moving knife are the movable contact end, described moving knife comprises two contacts, and the inboard of the movable contact end of two contacts is respectively equipped with contact-making surface.
2. big electric current three station double break mouth isolating switches according to claim 1 is characterized in that the outside of the movable contact end of two contacts is respectively equipped with the magnetic padlock plate.
3. big electric current three station double break mouth isolating switches according to claim 2 is characterized in that, connect by bolt between the movable contact end of described two contacts and the magnetic padlock plate, and the outside of described magnetic padlock plate is provided with the butterfly spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102340681A CN103280367A (en) | 2013-06-13 | 2013-06-13 | Large current three-position double-fracture disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102340681A CN103280367A (en) | 2013-06-13 | 2013-06-13 | Large current three-position double-fracture disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103280367A true CN103280367A (en) | 2013-09-04 |
Family
ID=49062855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102340681A Pending CN103280367A (en) | 2013-06-13 | 2013-06-13 | Large current three-position double-fracture disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103280367A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244798A (en) * | 2015-11-05 | 2016-01-13 | 北海银河开关设备有限公司 | Environment-friendly gas insulating ring main unit |
| WO2018090547A1 (en) * | 2016-11-17 | 2018-05-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Functional module for extension of spare bay for busbar of gis without power interruption, and extension method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859788Y (en) * | 2006-01-05 | 2007-01-17 | 镇江龙源电力科技有限公司 | Indoor integrated isolating switch |
| JP2008066146A (en) * | 2006-09-07 | 2008-03-21 | Chugoku Electric Power Co Inc:The | Switch |
| CN201226322Y (en) * | 2008-07-14 | 2009-04-22 | 河南森源电气股份有限公司 | Knife-touching compacting structure for isolating switch |
| CN203312136U (en) * | 2013-06-13 | 2013-11-27 | 北京合纵实科电力科技有限公司 | Heavy-current three-position double-fracture disconnecting switch |
-
2013
- 2013-06-13 CN CN2013102340681A patent/CN103280367A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2859788Y (en) * | 2006-01-05 | 2007-01-17 | 镇江龙源电力科技有限公司 | Indoor integrated isolating switch |
| JP2008066146A (en) * | 2006-09-07 | 2008-03-21 | Chugoku Electric Power Co Inc:The | Switch |
| CN201226322Y (en) * | 2008-07-14 | 2009-04-22 | 河南森源电气股份有限公司 | Knife-touching compacting structure for isolating switch |
| CN203312136U (en) * | 2013-06-13 | 2013-11-27 | 北京合纵实科电力科技有限公司 | Heavy-current three-position double-fracture disconnecting switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244798A (en) * | 2015-11-05 | 2016-01-13 | 北海银河开关设备有限公司 | Environment-friendly gas insulating ring main unit |
| CN105244798B (en) * | 2015-11-05 | 2018-05-22 | 北海银河开关设备有限公司 | A kind of environmental protection gas-insulated ring network cabinet |
| WO2018090547A1 (en) * | 2016-11-17 | 2018-05-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Functional module for extension of spare bay for busbar of gis without power interruption, and extension method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205230913U (en) | Three -position isolation grounding switch | |
| CN203966948U (en) | A kind of three station isolation grounding switchs | |
| CN103474284B (en) | Three-work-station dual-ground-connection load switch | |
| MX340651B (en) | Vacuum interrupter and linear disconnect switch. | |
| CN103474270A (en) | Solid sealed type vacuum load switch | |
| CN201498869U (en) | Vacuum ring main unit | |
| CN203312136U (en) | Heavy-current three-position double-fracture disconnecting switch | |
| CN103280367A (en) | Large current three-position double-fracture disconnecting switch | |
| CN203552958U (en) | Large-current isolation switch structure | |
| CN203491177U (en) | Built-in isolating device of load switch on outdoor column | |
| EP2772928A1 (en) | A high voltage switching device | |
| CN204045481U (en) | A kind of 110kV isolating switch | |
| CN101320649B (en) | 35kV outdoor AC isolation switch | |
| CN203205331U (en) | High-voltage load switch | |
| CN210091970U (en) | Miniaturized isolator mechanism | |
| CN203434031U (en) | Fixedly-sealed vacuum load switch | |
| CN202712031U (en) | Moving contact structure of 12kV three-position SF6 load switch | |
| CN204615248U (en) | A kind of loading switch cabinet | |
| CN207367872U (en) | A kind of arc-extinguishing mechanism for on-load switch | |
| CN201812736U (en) | Bipolar vacuum circuit breaker for gas-insulated metal-enclosed switching device | |
| CN201210461Y (en) | 35kV outdoor AC high isolating switch | |
| CN103681079A (en) | High-voltage isolating switch | |
| CN203242554U (en) | Vacuum circuit breaker | |
| CN104715958A (en) | Earthing switch and disconnecting switch with earthing switch | |
| CN202906280U (en) | Nitrogen insulating ring main unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130904 |