CN1160751C - Terminal structure for vacuum circuit breaker - Google Patents
Terminal structure for vacuum circuit breaker Download PDFInfo
- Publication number
- CN1160751C CN1160751C CNB981037674A CN98103767A CN1160751C CN 1160751 C CN1160751 C CN 1160751C CN B981037674 A CNB981037674 A CN B981037674A CN 98103767 A CN98103767 A CN 98103767A CN 1160751 C CN1160751 C CN 1160751C
- Authority
- CN
- China
- Prior art keywords
- terminal
- circuit breaker
- vacuum circuit
- contact
- cylinder
- 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.)
- Expired - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 230000005855 radiation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
- H02B11/04—Isolating-contacts, e.g. mountings or shieldings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
- H01H2033/6613—Cooling arrangements directly associated with the terminal arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The present invention relates to a terminal structure of a vacuum circuit breaker, which comprises a flat terminal, a cylindrical terminal, a fixing plate, a plurality of contactors and a spring ring, wherein the flat terminal is connected with a switching mechanism, one end of the cylindrical terminal is welded in the flat terminal, and a plurality of radiation fins are arranged at the outer circumference surface of the cylindrical terminal. A through hole passing through a central shaft and a plurality of screw fixing grooves are arranged at the front surface of the cylindrical terminal, and air vents are arranged at one part and the other part of the outer circumference surface. The fixing plate is connected with the front surface of the cylindrical terminal by a plurality of screws, a hole is arranged at the central part of the fixing plate, a plurality of screw fixing holes respectively correspond to the screw fixing grooves of the cylindrical terminal, and a plurality of inserting grooves are arranged along the outer circumference surface. The contactors are respectively inserted in the inserting grooves corresponding to the fixing plate, and a plurality of fixing grooves of the spring ring are respectively formed at the upper surface of each end. The spring ring is placed in the fixing groove of the spring ring, which corresponds to the contactors, and each contactor is fixed on the cylindrical terminal.
Description
The present invention relates to a kind of vacuum circuit breaker, particularly relate to the terminal structure of improved vacuum circuit breaker, prolonged the life-span of terminal, and when the vaccum circuit breaker electrifying, improved heat radiation by arranging the heat that produces in the terminal that looses effectively.
Usually, high voltage between vacuum circuit breaker connection or blocking power supply and the load and big electric current, the electric current of for example kilovolt above voltage and hundreds of peace, and be included in switching mechanism in the vacuum chamber, in order to shield the electric arc that in the switch vacuum circuit breaker, produces effectively.
As illustrated in fig. 1 and 2, traditional vacuum circuit breaker has 10, one switch operating mechanism 20 and other auxiliary equipment (not shown) of operating this switching mechanism 10 of a switching mechanism usually.
Referring now to accompanying drawing top equipment is described.
At first, be used for the switching mechanism 10 that electricity is switched on or switched off power supply and load, be positioned in the vacuum chamber 11.
Moving contact (not shown) in the vacuum chamber 11 connects with the switch operating mechanism 20 of vacuum circuit breaker.Therefore, when the vaccum circuit circuit breaker was switched on, moving contact just contacted with the contact (not shown) of deciding in the vacuum chamber 11, and when it disconnects, moving contact just with decide contact and separate a predetermined distance.
Secondly, switch operating mechanism 20 is positioned in the front end of vacuum circuit breaker, and it is the mechanism of an operation moving contact on/off conversion operations.
The auxiliary equipment of the operate as normal of assisted vacuum circuit-breaker has a control appliance (not shown), it is made of switch operating mechanism 20, the on off operating mode that is used to receive external electric signal and indicates vacuum circuit breaker with the signal of telecommunication, a guiding device 30, be used to make the terminal of vacuum circuit breaker to be connected or disconnect with power supply terminal or face terminals, with an interlock (not shown), be used for fixing guiding device 30.
In addition, 40a is a power supply terminal, and 40b is a face terminals, and 50a is a power supply terminal sleeve pipe, and 50b is a face terminals sleeve pipe.Here, the electric current from transformer station comes through power supply terminal sleeve pipe 50a and power supply terminal 40a and face terminals 40b and face terminals sleeve pipe 50b, flows through switching mechanism 10 and is sent to power consumer.Power supply terminal sleeve pipe and face terminals sleeve pipe 50a are opened and closed to emergency lock 51,50b, the roller 12 of support 52 guiding vacuum circuit breakers.
Describe the power supply terminal 40a link to each other with switching mechanism 10 below in conjunction with Fig. 3 to 6, and this power supply terminal 40a is continuous with power supply terminal sleeve pipe 50a or the state that separates.
As shown in the figure, the dull and stereotyped terminal 42 that links to each other with switching mechanism 10 is soldered on the end of cylindrical terminal 41, and a plurality of screw holddown grooves are arranged on the front surface of cylinder terminal 41.
Having a fixed head 44, form a plurality of screw fixing hole 44b in fixed head 44, is to be used for being connected with the front surface of cylinder terminal 41.
Be used to insert a plurality of insertion groove 44a of a plurality of contacts 43, settle along the external peripheral surface of fixed head 44, and at least one fixed head 44 can be provided.
Each contact 43 forms a plurality of holddown groove 43a that have on every end upper surface, is used for fixing respectively a plurality of ring springs 45, forms again to have insertion groove 43b on a limit of its lower surface, so that insert one corresponding among the insertion groove 44a.
The connection procedure of traditional terminal 40 is described now.
At first, dull and stereotyped terminal 42 is soldered on the end of cylinder terminal 42, and the fixing hole 44b of fixed head 44 is corresponding with the holddown groove 41a that forms on the front surface of cylinder terminal 41 respectively, and fixes with screw 46.
Each contact 43 is inserted among the insertion groove 44a of correspondence of fixed head 44, and fixed head 44 connects with cylinder terminal 41.
Secondly, when ring spring 45 was contained in the end of the holddown groove 43a that forms on the upper surface at two ends of each contact 43 respectively, because the inside elastic force of ring spring 45, each contact 43 was just fixedly secured, ring spring 45 is installed in its other end, thereby finishes this process.
But, when traditional terminal was connected with power supply or load end electrosurgical trocar, the heat that produces in terminal can not be distributed effectively.
Therefore, the terminal that the purpose of this invention is to provide a vacuum circuit breaker, it is by making a perforation in the cylinder terminal, the heat that looses and in terminal, produce when the vaccum circuit breaker electrifying by row effectively, and improve its work and prolong its life-span.
The invention provides a terminal with vacuum circuit breaker of switching mechanism for achieving the above object, it comprises: a flat terminal that is connected with switching mechanism; One one end is soldered to the cylinder terminal of flat terminal, a plurality of fin are formed on its external peripheral surface, a ventilating opening is formed on its external peripheral surface, a plurality of screw holddown grooves are formed on its front surface, each circulation of air interruption-forming is on the part and another part of its external peripheral surface, a fixed head links to each other by the front surface of screw with the cylinder terminal, is formed on a hole in its central part, a plurality of screw fixing hole and along a plurality of insertion grooves of its external peripheral surface; A plurality of contacts insert respectively in the insertion groove of correspondence of fixed head, form a plurality of ring spring holddown grooves respectively at the upper surface of its every end; A ring spring is placed on the ring spring mounting groove of contact correspondence, so that each contact is fixed on the cylinder terminal suitably.
Advantage of the present invention, purpose and characteristics will will become clearer by following description.
By below in conjunction with accompanying drawing, describe the present invention with way of illustration, the present invention can be by fine understanding, but the present invention is not limited to this, wherein:
Fig. 1 is the figure with vacuum circuit breaker of traditional terminal structure;
Fig. 2 is the end view with vacuum circuit breaker of traditional terminal structure;
Fig. 3 is the viewgraph of cross-section with vacuum circuit breaker of traditional terminal structure;
Fig. 4 is the figure of traditional terminal in the key diagram 3;
Fig. 5 is the front view of fixed head in the key diagram 3;
Fig. 6 is the end view of contact in the key diagram 3;
Fig. 7 is the partial cross sectional views that has the vacuum circuit breaker of terminal structure according to of the present invention;
Fig. 8 is the cross section view of the terminal structure according to the present invention;
Fig. 9 is the front view of the terminal structure according to the present invention;
Figure 10 is the end view of cylindrical terminal in the key diagram 8;
Figure 11 is the front view of cylinder terminal in the key diagram 8;
Figure 12 illustrates the end view of cylinder terminal according to an embodiment of the invention;
Below in conjunction with accompanying drawing, the terminal structure of vacuum circuit breaker is described.
As shown in Figs. 7-9, the flat terminal 400 that is connected with switching mechanism 100 is soldered to an end of cylinder terminal 300, and the other end of cylinder terminal 300 links to each other with fixed head 500 by a plurality of screws 350, and, provides a fixed head 500 at least herein.
Here, the shape of traditional fixed head 44 is identical among the shape of fixed head 500 and Fig. 5, a plurality of insertion groove (not shown), external peripheral surface along fixed head 500 forms, the shape that has traditional insertion groove 44a as shown in Figure 5 simultaneously, the shape of the traditional contact 43 in a plurality of contacts 600, its shape and Fig. 6 is identical, is inserted in the insertion groove respectively.
And a perforation 500a is formed on the core of fixed head 500.
On the upper surface on each end limit of each contact 600, form a kind of ring spring holddown groove (not shown) respectively, ring spring 700 is placed on the corresponding ring spring holddown groove.
Referring to Figure 10 and 11, the cylinder terminal 300 of terminal structure will be described in detail.
In addition, ventilating opening 330 is located on one side of a part of external peripheral surface of cylinder terminal 300, and another ventilating opening (not shown) is located on the another side of this part simultaneously.
As shown in figure 12, in the cylinder terminal 300 of an alternative embodiment of the invention, the area that contacts with each contact 600 obtains extending by a sweep 350 that is formed on the external peripheral surface of its fore-end.
Label 800a, 800b, 900,910 and 920 do not describe, and they are sleeve pipe, emergency lock and draw prevent mean, and the guide wheel of vacuum circuit breaker.
Connection procedure according to the terminal structure of vacuum circuit breaker of the present invention is described now.
At first, flat terminal 400 links to each other with cylinder terminal 300 by welding method.
The a plurality of screw holddown groove 300a that form in cylinder terminal 300 are by screw 340, and the screw fixing hole 500b with a plurality of fixed heads 500 is fixed together accordingly.
Each contact 600 is inserted into along in one of correspondence of the insertion groove of the external peripheral surface formation of fixed head 500,
When ring spring 700 was placed on the corresponding spring ring holddown groove on the upper surface of an end of each contact 600 that contacts with cylinder terminal 300 suitably, contact 600 was because the elastic force of ring spring 700 and by firm fixing.Then, other ring spring 700 is positioned on the corresponding spring ring holddown groove that forms on the upper surface of the other end of each contact 600, therefore, has finished the connection procedure of terminal structure.
Therefore, be fixed on sleeve pipe 800a, the terminal 930 among the 800b is inserted in the contact 600, contact 600 is placed in each insertion groove, insertion groove is to form along the external peripheral surface of fixed head 500, and fixed head 500 is fixed together with cylinder terminal 300, thereby electricity can pass through thus.When energising, in cylinder terminal 300, just produce heat.Here, the heat that is produced can pass through fin 310, by hole 320, is arranged diffusing effectively by the ventilating opening 330 of cylinder terminal 300.
In addition, the increase of contact area device has just reduced contact resistance and heat generation between each contact 600 and cylinder terminal 300.
As mentioned above, have a perforation according to the present invention, the terminal of the vacuum circuit breaker of ventilating opening and fin can effectively be arranged the heat that produces when loosing the vacuum circuit breaker energising.
Though the preferred embodiments of the present invention are disclosed by way of illustration, various for a person skilled in the art modifications, it is possible replenishing, and these modifications do not break away from the scope and spirit of the present invention that are cited in claims.
Claims (2)
1. the terminal structure of a vacuum circuit breaker has a switching mechanism to be used for connection and deenergization and load in this vacuum circuit breaker, and this switching mechanism is arranged in the vacuum chamber, and the terminal structure of said vacuum circuit breaker comprises:
A flat terminal that is connected with switching mechanism,
A cylinder terminal, its end is soldered on the flat terminal, and a plurality of fin are formed on its external peripheral surface, a through hole, form by central axis, a plurality of screw holddown grooves are located at its front surface, and each ventilating opening is formed on the part and another part of its external peripheral surface;
Fixed head, it links to each other by the front surface of a plurality of screws and cylinder terminal, is formed on a hole at its center, corresponding with the screw holddown groove of cylinder terminal respectively a plurality of screw fixing holes, and a plurality of insertion groove along its external peripheral surface;
A plurality of contacts insert respectively in the corresponding insertion groove of fixed head, on the upper surface of its each end, form a plurality of ring spring holddown grooves respectively,
A ring spring is placed on of correspondence of ring spring holddown groove of contact, is used for each contact is fixed to the cylinder terminal.
2. terminal structure as claimed in claim 1, wherein, the external peripheral surface of the leading section of this cylinder terminal that contacts with each contact is formed with groove, thus each contact portion of contact is contained in above it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981037674A CN1160751C (en) | 1998-01-27 | 1998-01-27 | Terminal structure for vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB981037674A CN1160751C (en) | 1998-01-27 | 1998-01-27 | Terminal structure for vacuum circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1224907A CN1224907A (en) | 1999-08-04 |
| CN1160751C true CN1160751C (en) | 2004-08-04 |
Family
ID=5218075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981037674A Expired - Lifetime CN1160751C (en) | 1998-01-27 | 1998-01-27 | Terminal structure for vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1160751C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637550A (en) * | 2011-02-09 | 2012-08-15 | Ls产电株式会社 | Terminals for vacuum circuit breaker and vacuum circuit breaker having the same |
| CN103681089A (en) * | 2012-07-26 | 2014-03-26 | Ls产电株式会社 | Circuit breaker |
| EP4391257A1 (en) * | 2022-12-21 | 2024-06-26 | ABB Schweiz AG | A circuit breaker and a tulip contact for thermal management in an electrical equipment |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR201812630T4 (en) * | 2006-05-10 | 2018-09-21 | Siemens Ag | The power switch, especially the high current switch. |
| ES2604327T3 (en) * | 2010-07-06 | 2017-03-06 | Abb Schweiz Ag | Switch comprising a sliding circuit breaker, a transformer and an electrical connector between the two |
| KR101901964B1 (en) * | 2016-12-05 | 2018-09-28 | 엘에스산전 주식회사 | Terminal assembly for vacuum contactor switch |
-
1998
- 1998-01-27 CN CNB981037674A patent/CN1160751C/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637550A (en) * | 2011-02-09 | 2012-08-15 | Ls产电株式会社 | Terminals for vacuum circuit breaker and vacuum circuit breaker having the same |
| CN102637550B (en) * | 2011-02-09 | 2014-11-19 | Ls产电株式会社 | Terminals for vacuum circuit breaker and vacuum circuit breaker having the same |
| CN103681089A (en) * | 2012-07-26 | 2014-03-26 | Ls产电株式会社 | Circuit breaker |
| CN103681089B (en) * | 2012-07-26 | 2015-12-23 | Ls产电株式会社 | Circuit breaker |
| EP4391257A1 (en) * | 2022-12-21 | 2024-06-26 | ABB Schweiz AG | A circuit breaker and a tulip contact for thermal management in an electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1224907A (en) | 1999-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040804 |
|
| CX01 | Expiry of patent term |