CN203055832U - Contact structure of AC-DC circuit breaker - Google Patents
Contact structure of AC-DC circuit breaker Download PDFInfo
- Publication number
- CN203055832U CN203055832U CN 201320009866 CN201320009866U CN203055832U CN 203055832 U CN203055832 U CN 203055832U CN 201320009866 CN201320009866 CN 201320009866 CN 201320009866 U CN201320009866 U CN 201320009866U CN 203055832 U CN203055832 U CN 203055832U
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- China
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- contact
- arc
- circuit breaker
- fixed
- fixed contact
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a circuit breaker assembly, and particularly to a contact structure of an AC-DC circuit breaker. The contact structure of the AC-DC circuit breaker comprises the following components: a static contact, a movable contact and an arc extinguishing chamber. The movable contact and the static contact are equipped correspondingly. The arc extinguishing chamber and the static contact are equipped adjacently. The head of the static contact is provided with one contactor which is a sliver graphite contactor. The structure is provided with the silver graphite contactor on the static contact, thereby obtaining high heat resistance, greatly reducing temperature increase and protecting the contact system when an electric arc is generated in switching off. Furthermore the silver graphite contactor has better conductive performance, and an arc guiding sheet can guide the generated electric arc to arc extinguishing grids of the arc extinguishing chamber, thereby extinguishing the electric arc effectively in time.
Description
Technical field
The utility model relates to a kind of breaker assembly, especially a kind of structure of contact terminal of alternating current-direct current circuit breaker.
Background technology
Circuit breaker (English name: circuit-breaker; circuit breaker) refer to close and close, carry and cut-off electric current under the normal loop condition, and can close close, carrying and cut-off the switching device of the electric current under the unusual loop condition (comprising short circuit condition) in official hour.Circuit breaker can be used to distribute electric energy; do not start asynchronous motor continually; power circuit and motor etc. are carried out protection, can automatic shutdown circuit when serious overload or short circuit and fault such as under-voltage take place for their, its function is equivalent to Fuse switch and the combination of crossing underheat relay etc.And behind the disjunction fault current, generally do not need to change parts.At present, obtained to use widely.Circuit breaker generally is made of contact system, arc quenching system, operating mechanism, release, shell etc.When short circuit, the magnetic field that big electric current (general 10 to 12 times) produces overcomes reaction spring, release pull operation mechanism action, the instantaneous tripping operation of switch.When overload, it is big that electric current becomes, the caloric value aggravation, and bi-metal plate deformed is to a certain degree pushing mechanism action (electric current is more big, and operate time is more short).
And dc circuit breaker is the circuit breaker that can be used for direct current or the conversion of AC system operational mode or failure removal, dc circuit breaker can be used for the alternating current circuit of ad eundem usually, but AC circuit breaker then can not be applied in the DC circuit of ad eundem, this is because fixed contact is easy to breakdown damage, when producing electric arc, can produce very high temperature, fixed contact also burns easily, and traditional AC circuit breaker static contact structure, electric conductivity is not fine.
Summary of the invention
The purpose of this utility model is, the structure of contact terminal of the alternating current-direct current circuit breaker that provide a kind of and conduct electricity very well, good heat resistance, temperature rise is low.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of structure of contact terminal of alternating current-direct current circuit breaker, comprise fixed contact, moving contact, arc control device, the corresponding setting with fixed contact of moving contact, the adjacent setting of arc control device and fixed contact, the head of fixed contact is provided with a contact, and described contact is silver-colored graphite contact.
Of the present utility modelly further be set to: the arc-chute of arc control device is fixed on the fixed contact, and corresponding setting with the contact.
Of the present utility modelly further be set to: also comprise and lead the arc sheet, lead the arc sheet and be fixed on the fixed contact, between arc-chute and contact.
Of the present utility modelly further be set to: arc-chute is fixed on the fixed contact afterbody, and as leading the arc sheet, the direction of leading the perk of arc sheet is corresponding with arc-chute on slope of fixed contact middle part perk.
Said structure arranges a silver-colored graphite contact at fixed contact; so deciliter in; when producing electric arc; thermal endurance is relatively good, and temperature rise reduces a lot, has protected contact system; and the electric conductivity of silver-colored graphite contact is relatively good; can guide in the arc-chute of arc control device producing electric arc and lead the arc sheet, eliminate electric arc effectively in time, make the utility model can be applied to dc circuit breaker and also can be applied to AC circuit breaker.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure diagram of present embodiment;
Embodiment
With reference to figure 1 as can be known, the structure of contact terminal of a kind of alternating current-direct current circuit breaker of the utility model, comprise fixed contact 1, moving contact 2, arc control device 3, moving contact 2 and fixed contact 1 corresponding setting, the head of fixed contact 1 is provided with a contact 11, and described contact 11 is silver-colored graphite contact, and the arc-chute 31 of arc control device 3 is fixed on fixed contact 1 afterbody, as leading arc sheet 12, the direction of leading 12 perks of arc sheet is corresponding with arc-chute 31 on slope of fixed contact 1 middle part perk.
The utility model utilizes silver-colored graphite contact, and by the respective outer side edges of fixed contact 1 with arc control device 3, improves the arc extinguishing ability, since silver-colored graphite contact heat-resisting, reduce temperature rise, good conductivity, can be used for the AC and DC circuit, it is wide that applicability becomes, and also prolonged the useful life of product.
Obviously, above-described embodiment only be for explanation clearly do for example, and be not restriction to execution mode.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are in the protection range of the present utility model.
Claims (4)
1. the structure of contact terminal of an alternating current-direct current circuit breaker, comprise fixed contact, moving contact, arc control device, the corresponding setting with fixed contact of moving contact, the adjacent setting of arc control device and fixed contact, it is characterized in that: the head of fixed contact is provided with a contact, and described contact is silver-colored graphite contact.
2. according to the structure of contact terminal of the described alternating current-direct current circuit breaker of claim 1, it is characterized in that: the arc-chute of arc control device is fixed on the fixed contact, and corresponding setting with the contact.
3. according to the structure of contact terminal of the described alternating current-direct current circuit breaker of claim 2, it is characterized in that: also comprise and lead the arc sheet, lead the arc sheet and be fixed on the fixed contact, between arc-chute and contact.
4. according to the structure of contact terminal of the described alternating current-direct current circuit breaker of claim 3, it is characterized in that: arc-chute is fixed on the fixed contact afterbody, and as leading the arc sheet, the direction of leading the perk of arc sheet is corresponding with arc-chute on slope of fixed contact middle part perk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009866 CN203055832U (en) | 2013-01-08 | 2013-01-08 | Contact structure of AC-DC circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320009866 CN203055832U (en) | 2013-01-08 | 2013-01-08 | Contact structure of AC-DC circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203055832U true CN203055832U (en) | 2013-07-10 |
Family
ID=48738759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320009866 Expired - Fee Related CN203055832U (en) | 2013-01-08 | 2013-01-08 | Contact structure of AC-DC circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203055832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446128A (en) * | 2019-12-28 | 2020-07-24 | 沈阳铁路信号有限责任公司 | A silver graphite contact safety unit |
-
2013
- 2013-01-08 CN CN 201320009866 patent/CN203055832U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446128A (en) * | 2019-12-28 | 2020-07-24 | 沈阳铁路信号有限责任公司 | A silver graphite contact safety unit |
| WO2021237878A1 (en) * | 2019-12-28 | 2021-12-02 | 沈阳铁路信号有限责任公司 | Relay having high reliability and high vibration resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 325604 Zhejiang city of Wenzhou province Yueqing city Liushi Zhen Fang Dou Yan Industrial Zone Patentee after: SUNTREE ELECTRIC CO., LTD. Address before: 325600, Zhejiang Province, Wenzhou City, Yueqing province north town road corner Village (Yueqing Wanjia Electrical Appliance Group Co., Ltd.) Patentee before: Yueqing Xinchi Electrical Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20170108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |