EP1006547A1 - Mécanisme d'insertion d'une résistance de fermeture avec un verrouillage à bille - Google Patents
Mécanisme d'insertion d'une résistance de fermeture avec un verrouillage à bille Download PDFInfo
- Publication number
- EP1006547A1 EP1006547A1 EP99402903A EP99402903A EP1006547A1 EP 1006547 A1 EP1006547 A1 EP 1006547A1 EP 99402903 A EP99402903 A EP 99402903A EP 99402903 A EP99402903 A EP 99402903A EP 1006547 A1 EP1006547 A1 EP 1006547A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- rod
- groove
- phase
- ball
- 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.)
- Granted
Links
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/50—Adjustable resistors structurally combined with switching 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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch
Definitions
- This type of switch comprises a metal envelope which extends along a axial direction, generally made of aluminum sheet, filled of a dielectric gas in which two are mounted moving contact assemblies in the axial direction, each contact equipment including a current contact permanent and an arcing contact.
- One of the two crew of contacts is semi-mobile in the sense that its displacement following the axial direction is coordinated with the movement of the other contact crew by via a connecting rod assembly or return system movement.
- Such a known mechanism comprises a metal tube coaxial with the rod and sliding in electrical contact on this one and one end of which is spitted on a conductive terminal of the switch to short-circuit the resistance.
- the end of the tube coming to engage on the conductive terminal is formed by a ring of fingers flexible.
- a spring is placed between a first shoulder provided on the rod and a second shoulder provided on the tube so as to be compressed during a first phase of a switch opening operation and exercise, during a second phase of the maneuver opening the switch after the first phase, a restoring force on the tube to move it following said direction in order to separate it from said terminal.
- the mechanism resistance insertion is designed so that the effort of the compressed spring always remains less than the force of the tube is withdrawn, the latter being withdrawn by the abutment in the axial direction of the rod of the semi-mobile contact against the metal tube.
- wear over time of these fingers leads to a loss of reliability of the resistor insertion mechanism closing.
- the object of the invention is to remedy these disadvantages.
- the invention relates to a mechanism insertion of a closing resistor for a electric switch comprising a semi-movable arcing contact in an axial direction which is integral with a metal rod which extends in this direction between the arcing and resistance, this mechanism comprising a metal tube coaxial with the rod and sliding in contact electric on it and one end of which comes plug into a conductive terminal of the switch to short-circuit the resistance, a spring arranged between a first shoulder provided on the rod and a second shoulder provided on the tube so as to be compressed during a first phase of a switch opening operation and exercise, during a second phase of the maneuver opening the switch after the first phase, a restoring force on the tube to move it following said direction in order to separate it from said terminal, characterized in that the mechanism further comprises a system with at least one ball which locks the tube in displacement in said direction during the first phase opening and which retracts during the second phase opening to release said moving tube following said direction.
- FIGS 1 to 4 show very schematically the mechanism for inserting the resistance when different phases of an opening maneuver the switch.
- Figures 5 to 7 show very schematically the mechanism for inserting the resistance when different phases of a closing maneuver the switch.
- the mechanism for inserting a resistance is intended to equip in particular a circuit breaker armored for high voltage comprising two crews of contacts movable relative to one another according to a axial direction A and not shown on the left on the figures.
- One of the crews is semi-mobile according to this steering and has an arcing contact extended by a rod metallic 1 which extends between the arcing contact and a closing resistance not shown on the right on the figures.
- the insertion mechanism according to the invention is arranged in line with the breaking chamber of the circuit breaker and rear of the semi-movable arcing contact.
- this mechanism includes a metal tube 2 which is coaxial with the rod 1 and slidably mounted thereon. Tube 2 is in electrical contact with rod 1 via sliding contacts 3 surrounding the rod 1 and arranged in a first bore 4 of tube 2.
- the end of tube 2 which in front of the circuit breaker breaking chamber carries a crown of flexible fingers 5 which come to skewer on a conductive terminal 5 'electrically connected to a socket circuit breaker current.
- tube 2 therefore comprises a first annular bore 4, followed by a first annular shoulder 6 extending radially in direction of axis A, followed by a second annular bore 7 with a step 8 returning towards the axis A, followed by a second annular shoulder 9 extending towards axis A, followed finally by a third annular bore 10 in which an annular groove 11 is provided.
- Rod 1 has from left to right a collar 12 forming an annular shoulder which is placed along the rod to be moved between the shoulder 6 of the tube 2 and the recess 8 thereof, followed by a groove annular 13 which is placed along the rod to be moved between the shoulder 9 and the groove 11 of the tube metallic 2.
- the rear edge of the groove 13 is constituted by the leave-shaped end of a tubular part 14 substantially frustoconical which is coaxial with the rod 1 and which is disposed between the latter and the bore 10 of the tube 2.
- the tubular part 14 has an annular bore 15, the bottom faces the leave-shaped end, this bore 15 bearing against an annular shoulder 16 end of the rod 1.
- the shoulder 16 is preferably constituted by an attached part facilitating the implementation place of the different elements of the mechanism around the rod 1.
- the rod 1, between the groove 13 and the shoulder 16 has again a double recess 17 and 18, the shaped end of tubular part 14 sliding on the surface of the first recess 17 of the rod 1 in the direction AT.
- the rear end of the tube 2 is closed by a sleeve 20 passed coaxially by the tube 19.
- Sliding contacts 21 are arranged between the socket 20 and the tube 19 to allow the passage of the current from the tube 2 to tube 19 which is electrically connected to the resistance.
- a first compression spring 22 is disposed between the shoulder 12 of the rod 1 and the shoulder 9 of the tube 1.
- a second compression spring 23 is disposed between the bottom of the bore 15 of the tubular part 14 and the shoulder 16 rod 1.
- the tube 2 is locked in the following movement direction A by a retractable ball system (s) 24. More particularly, when the circuit breaker is closed, each ball 24 is engaged in the groove 11 of the tube 2 and in a hole 25 of the tube 19 which faces this groove, the ball 24 resting on the cylindrical outer surface of the tubular part 14.
- a single ball is represented but it should be understood that the stop includes preferably several balls distributed around the circumference of the annular groove 11 when facing several holes 25 also distributed over the circumference of the tube 19.
- the rod 1 is moved along direction A from left to right in the figures and when the groove 13 on the rod 1 faces the hole 25 in the tube 19, the ball 24 retracts inside the groove 13 to release the tube 2 moving along the direction A. It is understood that the unlocking of the tube 2 takes place only after complete separation of circuit breaker contacts corresponding to a certain displacement of the rod 1.
- the ball system (s) retractable (s) according to the invention, it is not necessary to control the force exerted by the fingers 5 of the tube 2 on the terminal 5 '. Withdrawal takes place when the shoulder 12 of the rod 1 comes to drive the tube 2 via of the shoulder 8 over a sufficient stroke following the axial direction A.
- FIG. 1 the circuit breaker is closed. Fingers 5 are connected to terminal 5 '. Resistor is short-circuited because the current flows from the semi-mobile arcing contact to a circuit breaker outlet via rod 1, sliding contacts 3, metal tube 2, of the fingers 5 and of the conductive terminal 5 '.
- the ball 24 is engaged in the groove 11 of the tube 2 and in a hole 25 in the tube 19 so that tube 2 is locked in displacement in direction A.
- Spring 22 is relaxed between the two shoulders 6 and 9 and the spring 23 is relaxed between the bottom of bore 15 and the shoulder 16.
- the leave-shaped end of the tubular part 14 is in abutment against the stall stop 17 the most near throat 13.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
Claims (3)
- Un mécanisme d'insertion d'une résistance de fermeture pour un interrupteur électrique comprenant un contact d'arc semi-mobile suivant une direction axiale (A) qui est solidaire d'une tige métallique (1) qui s'étend suivant cette direction entre le contact d'arc et la résistance, ce mécanisme comprenant un tube métallique (2) coaxial à la tige et coulissant en contact électrique sur celle-ci et dont une extrémité (5) vient s'embrocher sur une borne conductrice (5') de l'interrupteur pour court-circuiter la résistance, un ressort (22) disposé entre un premier épaulement (12) prévu sur la tige et un second épaulement (9) prévu sur le tube de façon à être comprimé lors d'une première phase d'une manoeuvre d'ouverture de l'interrupteur et exercer, lors d'une seconde phase de la manoeuvre d'ouverture de l'interrupteur subséquente à la première phase, une force de rappel sur le tube pour le déplacer suivant ladite direction afin de le séparer de ladite borne, caractérisé en ce que le mécanisme comprend en outre un système avec au moins une bille (24) qui verrouille le tube en déplacement selon ladite direction lors de la première phase d'ouverture et qui s'escamote lors de la seconde phase d'ouverture afin de libérer ledit tube en déplacement suivant ladite direction.
- Le mécanisme selon la revendication 1, dans lequel le système à bille(s) comprend une première gorge (11) prévue sur le tube, une première pièce tubulaire (19) qui est fixe suivant ladite direction et qui est disposée de façon coaxiale au tube entre celui-ci et la tige, un trou (25) dans ladite pièce tubulaire qui fait face à la première gorge en position de fermeture de l'interrupteur, une bille (24) s'engageant dans ladite gorge et dans le trou pour verrouiller le tube en déplacement selon ladite direction lors de la première phase d'ouverture, le système à bille(s) comprenant en outre une seconde gorge (13) qui est prévue sur la tige et dans laquelle s'escamote ladite bille lors de la seconde phase d'ouverture.
- Le mécanisme selon la revendication 2, dans lequel la seconde gorge (13) prévue sur la tige comporte un bord coulissant suivant ladite direction, ce bord étant constitué par une seconde pièce tubulaire (14) coaxiale à la tige et qui coulisse le long de la tige, un second ressort (23) étant disposé entre un troisième épaulement (15) prévu sur ladite seconde pièce tubulaire et un quatrième épaulement (16) prévu sur la tige pour être comprimé lors d'une première phase d'une opération de fermeture de l'interrupteur jusqu'à ce que la première gorge prévue sur le tube métallique se présente face au trou prévu sur la première pièce tubulaire, la force de rappel exercée par le second ressort servant à engager la bille dans ledit trou de la première pièce tubulaire et ladite gorge du tube métallique et à déplacer ladite seconde pièce tubulaire suivant la direction axiale.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9815035A FR2786606B1 (fr) | 1998-11-30 | 1998-11-30 | Mecanisme d'insertion d'une resistance de fermeture avec un verrouillage a bille |
FR9815035 | 1998-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1006547A1 true EP1006547A1 (fr) | 2000-06-07 |
EP1006547B1 EP1006547B1 (fr) | 2006-01-25 |
Family
ID=9533334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99402903A Expired - Lifetime EP1006547B1 (fr) | 1998-11-30 | 1999-11-23 | Mécanisme d'insertion d'une résistance de fermeture avec un verrouillage à bille |
Country Status (10)
Country | Link |
---|---|
US (1) | US6284993B1 (fr) |
EP (1) | EP1006547B1 (fr) |
JP (1) | JP2000173413A (fr) |
KR (1) | KR20000035746A (fr) |
CN (1) | CN1135585C (fr) |
BR (1) | BR9907398A (fr) |
CA (1) | CA2290850C (fr) |
DE (1) | DE69929580T2 (fr) |
FR (1) | FR2786606B1 (fr) |
TW (1) | TW497111B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103500930A (zh) * | 2013-10-10 | 2014-01-08 | 益和电气集团股份有限公司 | 一种二次线护板 |
CN115064327A (zh) * | 2022-06-15 | 2022-09-16 | 成都宏明电子股份有限公司 | 基于滚动摩擦的高寿命高精度多圈角位移电位器 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5179278B2 (ja) * | 2008-07-23 | 2013-04-10 | 三菱電機株式会社 | 開閉器 |
FR2957451A1 (fr) * | 2010-03-09 | 2011-09-16 | Areva T & D Sas | Interrupteur electrique haute tension avec retour sur fermeture et dispositif d'insertion d'une resistance |
FR2984590B1 (fr) * | 2011-12-14 | 2014-07-04 | Alstom Technology Ltd | Ensemble conducteur mobile pour sectionneur, comprenant un ressort permettant d'accelerer la separation des contacts d'arc |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4324959A (en) * | 1978-10-16 | 1982-04-13 | S&C Electric Company | Pre-insertion resistor mechanism for a circuit interrupting device |
US4338500A (en) * | 1979-03-02 | 1982-07-06 | Societe Anonyme Dite: Delle-Alsthom | Device for switching in a resistance when a circuit breaker closes a circuit |
FR2553926A1 (fr) * | 1983-10-24 | 1985-04-26 | Merlin Gerin | Disjoncteur haute tension a resistances de fermeture |
-
1998
- 1998-11-30 FR FR9815035A patent/FR2786606B1/fr not_active Expired - Fee Related
-
1999
- 1999-11-23 DE DE69929580T patent/DE69929580T2/de not_active Expired - Lifetime
- 1999-11-23 EP EP99402903A patent/EP1006547B1/fr not_active Expired - Lifetime
- 1999-11-26 TW TW088120684A patent/TW497111B/zh not_active IP Right Cessation
- 1999-11-29 BR BR9907398-6A patent/BR9907398A/pt not_active IP Right Cessation
- 1999-11-29 JP JP11338206A patent/JP2000173413A/ja not_active Withdrawn
- 1999-11-29 CA CA002290850A patent/CA2290850C/fr not_active Expired - Fee Related
- 1999-11-29 US US09/449,473 patent/US6284993B1/en not_active Expired - Fee Related
- 1999-11-29 KR KR1019990053369A patent/KR20000035746A/ko not_active Application Discontinuation
- 1999-11-30 CN CNB991228154A patent/CN1135585C/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4324959A (en) * | 1978-10-16 | 1982-04-13 | S&C Electric Company | Pre-insertion resistor mechanism for a circuit interrupting device |
US4338500A (en) * | 1979-03-02 | 1982-07-06 | Societe Anonyme Dite: Delle-Alsthom | Device for switching in a resistance when a circuit breaker closes a circuit |
FR2553926A1 (fr) * | 1983-10-24 | 1985-04-26 | Merlin Gerin | Disjoncteur haute tension a resistances de fermeture |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103500930A (zh) * | 2013-10-10 | 2014-01-08 | 益和电气集团股份有限公司 | 一种二次线护板 |
CN103500930B (zh) * | 2013-10-10 | 2015-12-23 | 益和电气集团股份有限公司 | 一种二次线护板 |
CN115064327A (zh) * | 2022-06-15 | 2022-09-16 | 成都宏明电子股份有限公司 | 基于滚动摩擦的高寿命高精度多圈角位移电位器 |
CN115064327B (zh) * | 2022-06-15 | 2023-07-14 | 成都宏明电子股份有限公司 | 基于滚动摩擦的高寿命高精度多圈角位移电位器 |
Also Published As
Publication number | Publication date |
---|---|
CA2290850A1 (fr) | 2000-05-30 |
FR2786606A1 (fr) | 2000-06-02 |
KR20000035746A (ko) | 2000-06-26 |
DE69929580T2 (de) | 2006-11-09 |
CN1258922A (zh) | 2000-07-05 |
JP2000173413A (ja) | 2000-06-23 |
TW497111B (en) | 2002-08-01 |
BR9907398A (pt) | 2002-07-23 |
CA2290850C (fr) | 2004-06-08 |
FR2786606B1 (fr) | 2001-01-05 |
US6284993B1 (en) | 2001-09-04 |
EP1006547B1 (fr) | 2006-01-25 |
DE69929580D1 (de) | 2006-04-13 |
CN1135585C (zh) | 2004-01-21 |
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