CN2114887U - 12.5 ka pole sf6 breaker - Google Patents
12.5 ka pole sf6 breaker Download PDFInfo
- Publication number
- CN2114887U CN2114887U CN 91221208 CN91221208U CN2114887U CN 2114887 U CN2114887 U CN 2114887U CN 91221208 CN91221208 CN 91221208 CN 91221208 U CN91221208 U CN 91221208U CN 2114887 U CN2114887 U CN 2114887U
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- CN
- China
- Prior art keywords
- contact
- circuit breaker
- arc
- control device
- fixed contact
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a 12.5 KA pole SF6 breaker, comprising a contactor seat, a movable contact, a static contact, an arc-extinguishing chamber. The breaker changes the structure of existing breakers and has the advantages of big capacity and good operation performance, and is widely used in the field of electric power, metallurgy, chemical industry, mines, railways, etc.
Description
The present invention relates to 10KV high pressure field SF6 circuit breaker on the 12.5KA post.
The present invention be directed to present use specified drop-out current 6.3KA, rated current 400A the 10KV pole-mounted circuit breaker since its capacity little, the requirement that still can not satisfy vast electric power system designs.
Solution of the present invention is on the basis of SF6 circuit breaker on the existing LW3-10/400-6.3KA post that uses.Change its arc control device, electric conductor fully.The version of fixed contact and the fit of fixed contact; Be that the arc control device drive coil changes lap wound on the tube electrode of garden by traditional axle into around mode along the insulated tube coiling, and on the B phase coil, increase by a magnetic guiding loop, be provided with the porus excretorius of 8 45 ° of distributions in this chamber with respect to the fixed contact position; The electric conductor contact-making surface changes 2 beryllium-bronze sheets into by original 1 beryllium-bronze sheet.Former contact brass conductor all changes the red copper conductor into, and fixed contact changes arc fingertip into by half original electric current, half arc fingertip, and adopts insulating case to add the assembling of normal pressure spring.
SF6 circuit breaker on this 12.5KA post has following evident characteristic: at first because its capacity is big.Can be widely used in the fields such as electric power, metallurgy, chemical industry, mine, railway, as accepting in the 10KV electric power networks of three-phase alternating current 50HZ and the control of distribution electric energy and the usefulness of protection; The second, because its rated current, the increase of specified drop-out current is built and is transformed for Medium voltage switch or circuit breaker enters the city net.High floor building appliance equipment adopts no oiling electrical equipment to lay a good foundation; The 3rd, because the improvement of arc control device will have been started precedent for the capacity that further improves circuit breaker.
Below in conjunction with drawings and Examples the utility model is further specified:
Accompanying drawing one is a structure principle chart of the present utility model
Accompanying drawing two is structure principle charts of arc control device in the utility model.
Accompanying drawing three is structure principle charts of moving contact in the utility model
Accompanying drawing four is assembly structure schematic diagrams of fixed contact in the utility model
Figure one label: 1, contact base; 2, cushion pad; 3, movable feeler lever; 4, silver-plated beryllium-bronze sheet; 5, moving contact; 6, arc control device; 7, insulating case; 8, static contact finger; 9, fingertip spring; 10, stationary contact head rod.
In figure one, contact base (1) links to each other in order to fixing dynamic and static feeler lever (3,10) and with the housing of circuit breaker, plays fixedly current-carrying part and arc control device (6).Cushion pad (2) moving contact (5) when preventing breaker open operation impacts contact base (1).Movable feeler lever (3) one ends link to each other with external the end of a thread, moving contact (5) can be gone up motion at movable feeler lever (3), by effect drive moving contact (5) motion of power transmission shaft, with the effect that reaches branch, closes a floodgate.Insulating case (7) is in order to installing static contact finger (8), and fingertip spring (9) mainly is reliable contact that guarantees fixed contact and stationary contact bar (10), fixed contact and moving contact (5).
Figure two labels: 1, garden tube electrode; 2, epoxy resin adhesive; 3, magnetic guiding loop; 4, insulating case; 5, screwed pipe; 6,7,8 standard mount; 9, screw; 10, copper tungsten ring; 11, drive coil.
In accompanying drawing two, garden tube electrode (1) is fixed on the insulating case (4) by screw (9), and insulating case (4) is connected with screwed pipe (5).By screwed pipe (5) whole arc control device are linked to each other with fixed contact, drive coil (1) is welded on garden tube electrode (1), coil is changed at garden tube electrode (1) along the insulated tube coiling around mode by primitive axis and goes up lap wound, to concentrate electrode magnetic field, the other end of coil links to each other with screwed pipe (5) by standard mount.Magnetic field when increasing the arc current zero passage, and prevent to first open cut-offfing of all the other the two poles of the earth of pole electrical arc current affects effectively, on the B phase coil, increase a magnetic guiding loop (3), magnetic guiding loop (3) uses the silicon strip lap wound on drive coil, epoxy resin adhesive (2) is connected in order to stabilized driving coil (11) and garden tube electrode (1) and screwed pipe (5), to strengthen the insulation of arc control device, for guaranteeing that electric arc reliably concentrates on garden tube electrode (1) and goes up rotation, be provided with the porus excretorius (seeing shown in the accompanying drawing one dotted line hole) of 8 45 ° of distributions with respect to the fixed contact position at arc control device.Like this, when moving contact began to separate, SF6 gas entered arc control device inside rapidly by 8 holes, and make it negative pressure and reduce, the inside and outside motion of electric arc, and extinguish inner residual arc, and A, C two are divided by and cancel outside the magnetic guiding loop, and all the other are identical with the B phase structure.
Figure three labels: 1, copper tungsten ring; 2, copper tube; 3, brass bushing; 4, silver-plated beryllium-bronze sheet.
In the accompanying drawing three, copper tungsten ring (1) and brass bushing (3) by silver soldering on copper tube (2), beryllium-bronze sheet (4) invests copper tube (2) inwall by the elastic force of self, the setting of beryllium-bronze sheet, makes moving contact the time can keep good electrical contact with movable feeler lever in motion, plays the current-carrying effect.
The assembly structure of accompanying drawing four static contact fingers
In the accompanying drawing four, for strengthening electrically contacting of circuit breaker, reduce the difficulty of processing of contact, the interchangeability of assurance contact, fixed contact of the present invention is by half original electric current, and half arc fingertip structure changes the full arc fingertip into.Like this, both can be used as current-carrying and also can be used as arcing usefulness.During assembling,, just can guarantee the independent property and the globality of fixed contact contact effectively, simultaneously, communicate with the porus excretorius of arc control device, make SF6 gas can enter inside smoothly because of interior insulation is with 45 ° of 4 uniform holes as long as utilize an insulating case to add the normal pressure spring.
Electric conductor among the present invention is the major loop electric conductor, is made up of dynamic and static feeler lever and dynamic and static contact etc.Reach the different ampacitys that require for making, change the contacting section of dynamic and static feeler lever into 2 beryllium-bronze sheet contacts by original 1 beryllium-bronze sheet contact, physical dimension adds greatly φ 22mm by original φ 18mm, simultaneously, for guaranteeing the major loop contact resistance, all make former contact brass conductor into the red copper conductor.Like this, the installing of 2 beryllium-bronze sheets strengthens moving contact steering capability in motion process, has prolonged the operation lifetime of contact of breaker part.
Claims (4)
1, SF6 circuit breaker on the 12.5KA post, form by operating mechanism, switch case, arc control device, major loop (three-phase) etc., major loop comprises parts such as contact base, movable feeler lever, moving contact, stationary contact bar, static contact finger, the invention is characterized in the arc control device, major loop electric conductor, the version of fixed contact and the fit of fixed contact that change circuit breaker fully.
2, by the described circuit breaker of claim 1, the drive coil that it is characterized in that these arc control device by original axle around changing lap wound into, and on coil, increase magnetic guiding loop and (only use the B phase of threephase switch, all the other two-phases are not with magnetic guiding loop), be provided with the porus excretorius of 8 45 ° of distributions with respect to the fixed contact position in this chamber.
3, by the described circuit breaker of claim 1, the contact-making surface that it is characterized in that this major loop electric conductor moving contact and movable feeler lever is changed by original 1 beryllium-bronze sheet into brass conductor all makes red copper in 2 beryllium-bronze sheets, the former contact.
4, by the described circuit breaker of claim 1, it is characterized in that this fixed contact all changes arc fingertip into by half electric current, half arc fingertip structure, and adopt insulating case to add the assembling of normal pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91221208 CN2114887U (en) | 1991-11-28 | 1991-11-28 | 12.5 ka pole sf6 breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91221208 CN2114887U (en) | 1991-11-28 | 1991-11-28 | 12.5 ka pole sf6 breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2114887U true CN2114887U (en) | 1992-09-02 |
Family
ID=4928217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91221208 Granted CN2114887U (en) | 1991-11-28 | 1991-11-28 | 12.5 ka pole sf6 breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2114887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171092A (en) * | 2017-05-23 | 2017-09-15 | 中航光电科技股份有限公司 | Contact assembly and the electric coupler component using the contact assembly |
-
1991
- 1991-11-28 CN CN 91221208 patent/CN2114887U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171092A (en) * | 2017-05-23 | 2017-09-15 | 中航光电科技股份有限公司 | Contact assembly and the electric coupler component using the contact assembly |
| CN107171092B (en) * | 2017-05-23 | 2024-04-05 | 中航光电科技股份有限公司 | Contact assembly and electric connector assembly using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |