DE1810267A1 - Step switch for regulating transformers with a vacuum switch in the diverter switch - Google Patents

Description

Additional application for patent ... ( -r -3)

The main patent. . . (-) refers to a Step switch for regulating transformers with a vacuum switch in the diverter switch and a tap selector with two jumpers switching the same tap contacts one after the other, a contact arrangement consisting of a permanent main contact is provided in the diverter switch parallel to the vacuum switch and parallel to this consists of an auxiliary contact with a series transition resistor, and wherein the vacuum switch with the one switching bridge and the parallel contact arrangement with the second The step selector switch is electrically connected »

This advantageous arrangement of the tap changer with a Vacuum switch in the diverter switch according to the main patent requires a compulsory switching sequence of the individual switches of the diverter switch depending on each other, for safety reasons must be done very precisely to avoid interference. On the other hand, the invention aims at the individual Parts of the diverter switch, in particular for a three-phase version of the diverter switch, to be arranged in a space-saving manner and easy to keep track of. The three-phase diverter switch or step switch is most often used in practice Circuit used by regulating transformers.

According to the invention, the step switch identifies the above described type according to the main patent · 60 46f for a three-phase version of the diverter switch because, ß the permanent main contact, the auxiliary switch and the vacuum switching element per phase within vertical insulation bars one below the other

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BATH ORIGINAL

lie and are attached to these insulating bars and that these single-phase switches are arranged around a central, rotatable drive tube, with the middle between the insulating ■ rods of each single-phase switch, a rotatable drive shaft and a pressure bolt are provided, which are each shared through the drive tube via an upper and lower gear movable for all single-phase switches sinci.

The insulating rods of the individual Sinphaoenechalter are useful affixed to an upper and a lower log star and the upper warehouse star. int attached to a support cylinder. As a result, the whole three-phase fan can be comfortably in a housing was inserted and removed! ^ r. In the ^ cylinders can be accommodated for the switchover resistance.

The drive tube with a gear wheel and the drive shafts of the single-phase switch are advantageously located in the upper bearing cage each with a) Bitzel stored, with the gear and the bits mesh as an upper gear. in the lower bearing star are expediently the drive tube with the help of a coupling piece for a step selector drive axis and the pushbuttons for switching on the moving contact pieces stored in the vacuum switch Tele-Tienta. It is on the coupling piece one pinion and one per phase attached to the lower bearing star Axis an auxiliary pinion with cams mounted, > 1ia 9-13 lower gear mesh, whereby the cams clia pressure

»Bolts for switching on the vacuum switching elements are controllable. The transmission ratio of the upper gear unit is advantageously 1: 2 and the lower gear unit 1: 1.

According to a further invention is on each rotatable drive shaft between the permanent main contact and the auxiliary switch Fastened screw and around this screw a vertically displaceable clamping member in guide rails with an in'den Snail thread engaging pollen cams provided. Each tendon is advantageously provided with a hook, into a latch on the movable contact bridge, the permanent main contact intervenes. Furthermore, it is useful to have a cross pin on each "drive shaft" to temporarily keep the

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Permanent main contacts and on each movable contact bridge of the Permanent main contacts a tension spring to close the permanent main contacts intended;

It is also advantageous that the lower part of each tendon one between the clamping member and a guide plate for a contact ring as a movable contact piece of the auxiliary switch acting spring is attached. In addition, bind appropriately on each drive shaft in an opening in the guide plate a release ring and on the underside of each guide plate two horizontally displaceable, spring-loaded Wedges ^ stored on each one approach of the drive shafts started and can be released by the release rings.

The contact pieces of the auxiliary switches standing on the feet are useful arranged on a bearing plate attached to each of the Isclierstäben and used for the lower bearing of the drive shafts. There is always between the guide plate and the bearing plate “An auxiliary spring is provided, which is weaker than that Spring between the tendon and the guide plate is. On the underside of each bearing plate are in another design Spring-loaded holte pawls for one clamping cage each. Switching the moving contact pieces of the vacuum switching elements attached, which can be triggered by aur are. Each clamping cage is mounted and is axially displaceable in holding plates for the vacuum switching element held by the holding pawls against the action of springs in the switched-on position of the vacuum circuit elements.

The design of the diverter switch as a single-phase switch and especially as a three-phase switch according to the invention is made possible a compact but clear structure of the individual switches and a very simple and precise power transmission on the individual switching elements. The entire three-phase switch can be conveniently removed from the container and inspected or individual parts replaced because the switch and the cable routing through the insulating rods only are slightly covered. In addition, there is a compulsory switching sequence, which the switching foil according to the H $ uptpatent-

BATH ORIGINAL

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corresponds and a high level of security through mutual Locking of the individual switches achieved.

In the drawing is an embodiment of the diverter switch shown according to the invention, wherein

1 shows a vertical section I - I according to FIG. 3, each with a single-phase switch when switched on (left side) and a single-phase switch in an intermediate holder position (right side) shows.

Fig. 2 shows a single-phase switch in the switched-on state

in section II - II according to FIG. 3 and FIG. 3 a cross section III - III of the general switch according to Fig. 1..

In a tubular oil vessel 10 are the permanent main contact for each phase 12, the auxiliary switch 13 and the vacuum switching element 11 among each other and within insulating rods 18 ' arranged and attached to these insulating bars. The insulating rods 18 are again attached to an upper bearing star 19 and one lower bearing star 20 attached. The upper bearing star is carried by a support cylinder 21, which thus the overall switch wearing. In the support cylinder 21 are the switching circuit resistors R housed. In the upper storage compartment 19 is a centrally located, rotatable? Drive tube 22 with a gear P3 stored. The upper and lower part of the drive tube 22 is attached to the hub 24 of the gear 23, the upper hub serves as a bearing axle. Furthermore, the drive shafts 25 of the single-phase switches are in the upper bearing star 19 stored, which are provided with a pinion 26 above, which mesh with the gear 23. The drive shafts 25 are in the middle between the Iyolierstäben 18 of the single-phase switches and are on their lower ends stored in a bearing plate 27 each, which are attached to the Isolieratäben 18.

In the lower bearing star 20, the drive tube 22 is with the help of a Coupling piece 28 for a step selector drive shaft 29 mounted. Furthermore, the pressure bolts are in the lower bearing star for switching on the movable contact pieces 31 of the vacuum switching elements 11. The Druckbolzen. 30 lie on the same

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Centerline E-.witchen the ^Irclierst: Lben 10 as the driving parts 25. Ear coupling piece 28 on the drive tube 22 carries a pinion 31 which is connected to an auxiliary Ritz-el 32 fiir each phase • switch kSannt. Nasty auxiliary sprockets are each mounted on an axle 33 attached to the star wheel 20 and provided with cams 34 which control the pressure bolts 30 to the ice container and the vacuum switching elements 11. For this purpose, these truck bolts 30 are provided with pollen 35 at the lower end, which roll easily on the cam 34.

The upper gear with the Zämrad 23 and the pinions 26 has a gear ratio ^ cn 1: 2, while the lower gear with "dpη tickling 31 and 32 a transmission ratio of 1: 1 owns. This ensures that at half a turn of the drive tube 22, the drive shafts 25 perform a full revolution, while the auxiliary pinion 32 with the cam 34 only one make half a turn.

Below the upper gear 23, 26 is for each single-phase Gcria.lte-r Oiler permanent main contact 12. Its fixed contacts 4-0 sinu attached to an Eefestigungsplatte 41, which in turn attached to the I'-clieretäben 18 int. The movable contact bridge 42 of the permanent main contact 12 is attached to a lever 43 which is pivotable about a fixed axis 44. Two Extension springs 45 are between the Eefestigungsplatte 41 and the Contact bridge 42 attached, the permanent main contact in Hold the closed position. In the area of the swivel Contact bridge 42 solder a transverse pin 46 on drive shaft 25 attached, which holds the contact bridge 42 in the open position in a Feotgelepten angle of rotation.

Between the reuerhauptVontakt 12 and the auxiliary switch 13 is he the rotatable drive shaft 25 a worm 47 with a L'chneckengentf attached and around this screw a tendon 48 provided, which in guide rails 49 on the insulating rods 1B vertically displaceable iat. The tendon 48 has an interior a roller screw 50, which is inserted into the screw thread of the screw 47 engages, In addition, the tensioning element 40 has a hook 51 » the in ο ine latch 52 on the bow possible contact bridge 42 of the Permanent main contactoB 12 oL attacks.

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The auxiliary switch 13 consists of the fixed contact. stuck 53 and a spring-loaded contact ring 54 as a movable contact bridge. The fixed contacts 53 are attached to the bearing plate. The contact ring 54 is attached to a guide plate 55 by means of spring-loaded bolts 56. Between the clamping member 48 and the guide plate 55, a spring 57 attached to the lower part of the clamping member is attached. On the drive shaft 25 in a Cffrvung of the guide plate 55 a release ring is mounted, which is used to read out two horizontally displaceable, spring-loaded wedges 59, which are axi the underside of the guide plate 55 and rest on a shoulder 60 of the drive shaft 25 the guide plate 55 and the bearing plate 27, an auxiliary spring 61 is provided, which has a lower spring force 'alc the celebration 57 between the clamping member 48 and the guide plate he 5 ^r . On the underside of the guide plate 25, two release bolts 62 are also attached, which are guided in bores in the bearing plate and act on holding pawls 63, which are pivotably fastened below the bearing plate 27. The illegal pawls 3 are cushioned by springs 64 and are used to hold a tension cage 65 , which switches the movable contact piece 31 of the vacuum switching element 11.

The vacuum switching element 11 for each single-phase switch is in Support plates-66 mounted, which are attached to the 'insulating rods 18; are. The side bars 67 of the tensioning cage 65 are guided through these retaining plates Bind. The tensioning cage is held by the pawls against the action of springs 68 in the closed position of the movable contact piece 31 of the vacuum interrupter 11 held. The lower part of the rod cage 65 is fixed to the movable contact 31 dea vacuum holding element 11 and with the Push bolt 30 connected, so that there is no movement of the rod cage transfers to the Druckbolzon and vice versa.

The mounting plate 41 of the permanent main contact K ₁ . The bearing plate 27 for the auxiliary post 13 and the holding plates 66 for the vacuum acholt element 11 consist of a metal core with a Iooliermasae uragooaenen metal core, with the metal core expediently made of aluminum and the Ieoliermaefle made of cast resin boo tent * ^

009803/0892

A spring-loaded contact 70 is attached to the lower bearing part 20 for 3 ^{or more} : Einphspenpchalter, connected to the movable Kcntskt 31 of the Vekuuraecheltelementef? 11 via a conductor 7 "? "10 contact and serves as a lead contact. 73 is a connection"; to the upper switching resistors R from the switchboard 13 and with 74 a connection from the circuit breaker R to the permanent main contact 1 ?. The contact 75 represents the * Connection vct Hmipt'-ccntfilrt 1? And from the help switch 13 to the step selector. The contact 76 int the connection from the fixed contact 77 d ^ n VQkuura ^ ch ^ lt ^ lenier.teR 11 to the rittifenwhler. The front connection 78 leads from the main contact ^? and the switchover pressure in the P. 7U ^ Ahleitungekontakt.

t'ie v.'ir'ittn ^ ffWfeiee and the Umschaltvor.-ring of the lasta-riichalters should on the basis of illustrations, in particular of the two divisions in Fi * ;. 1 explains \ veraen. In doing so, it-t to be noticed at one Urar.c'n ^ ltvor ^ öng always all single-phase chaltor -iie the same Execute movement "r, u at the same time. Lie both, different Positions of the Einphaeenachalter according to Fig. 1 are only used Explanation of the switching process.

Pig. 1 on the left shows a single-phase switch with the ignition switched on, with the main clock 1? and the Vftkuumpchaltelement switched on, and dor help clock 13 is no longer available. The switch position corresponds to the position of the switch in Pi _e : .1 · of the main patent.

Ground the drive tube 22 and thus the drive shafts 25 by a drive (not shown) .30 this is Tendon 48 through the calibration with the drive shaft «rotating The screw 47 is guided according to the sound and opens the permanent contact 12 through the hook 51. The spring 57 is also tensioned and presses the guide plate 55 with the contact tray 54 afterwards below, whereby the auxiliary switch 13 is closed. Kur «ror at the end of the movement the tension glide 48 downwards meets the Tendon on the Auclo'Bering 58, which holds the two wedges 59 apart and thereby the way for the guide plate further down releases. The tensioned spring 57 does this Continuation of the guide plate 55. Same as the Downward movement of the guide plate 55 are caused by the

009883/0092 bad original

Release bolt 62 the Helteklinken 63 and thus del% iMmfefig released, which is pressed down by its springs 6B, because in the meantime the cams34 of the also rotated Hilfspitzele 32 have released the pressure pin 30. In order to the movable contact 31 opens the vacuum switching element 11.Ir. this scolding division, which is followed by the right par division Pig. 1 is reproduced, the main part of the Pauer & kt 12 is open, the auxiliary switch 13 is closed and the vacuum valve 11 opened. This switching position thus corresponds to the position of the I switch in FIG. 5 of the main patent.

When the drive tube 22 and the drive shafts continue to rotate, the tensioning element 43 is guided back flat again by the worm 47 ', whereby the movable contact bridge 42 of the permanent main contact 12 is released by the hook 51. Tech will the contact bridge 4- ·? initially held by the cross pin 46 so that it cannot yet be brought into the closed position by the tension spring 45. Only when the drive shaft 25 rotates by about 1-5 ° does the transverse pin 46 come out of the engagement of the switching bridge 42, so that the main contact 12 is swiveled up by the contact bridge 42. At the same time, by means of the tension springs 45, the spring 57 is relaxed by the upward movement of the tension member 48, so that the guide plate 55 is pushed upwards by the auxiliary spring 61 and while the contact ring 54 is being carried along, the auxiliary container 13 is opened The movement of the guide plate 55 releases the release bolts 62 and also releases the holding pawls 63. With the rotation of the drive tube a 22, the auxiliary pinion 3 is also rotated via the pinion J] the auxiliary pinion 3? thus pushing the pressure bolt 30 upwards, thereby switching on the vacuum chuck element 11 and at the same time pressing the clamping cage 65 upwards, engaging it in the holding pawls 63 which are now free kt and thus holds the vacuum maintenance element 11 in the closed position, is it possible for the main contact 1? and the vacuum · chnltelement 11 closed and the Hilfsschaltor 13 geöffnet.Diese Ctellung Kinphaeen the switch corresponds to the position Pig.1 left Since "again and äaoit the position of the switch according Fi _e; .8 of the main Patentee. The diverter switch ict ready for another switchover «'- ^

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Claims (15)

Claims 1. Step switch for regulating transformers with a vacuum switch in the diverter switch and a tap selector with two · die the same step contacts successively switching bridges, a contact arrangement in the diverter switch parallel to the vacuum switch is provided that consists of a permanent main contact and parallel to this from an auxiliary contact with a series There is transition resistance, and the vacuum post-switch with one scarf + .bridge and the one lying parallel to it Contact arrangement with the second switching bridge, the step selector is electrically connected, according to patent ... (> i), for a three-phase version of the diverter switch, characterized in that that the permanent contact (12), the auxiliary container (13) and the vacuum switching element (11) for each phase within vertical insulating bars (1;) lie one below the other and on them Icclierstäben are attached and that this single-phase holder arranged around a central, rotatable drive tube (2?) 3ind, - »centered between the insulating rods (18) of each single-phase switch a rotatable drive shaft (25) and a pressure pin (30) are provided which extend through the drive tube (22) via an upper (23, 26) or a lower (31, 32) gear can be moved together for all single-phase switches. 2. Step switch according to claim 1, characterized in that the insulating rods (10) are attached to an upper (19) and a lower (20) La ^ first and the upper bearing star (19) is attached to a support cylinder (21). 3. Step switch according to claim 1 and 2, characterized in that that in the upper bearing star (19) the drive tube (22) with an Eahnrad (23) and the drive shafts (25) each with a pinion (26) are stored, the gear (23) and the pinion (26) meshing as an upper gear. BAD ORiGiNAL -10- 009883/0892 4. Step switch according to claim 1 and 2, characterized in that that in. lower bearing star (2?) the drive tube (22) with the help of a Kuj-plungstückea (28) for a step selector drive shaft (29) and the pressure pin (30) for switching on the movable Contact pieces (31) of the vacuum switching elements (11) are mounted. 5. Step switch according to claim 4, characterized in that on the coupling piece (2S) a pinion (31) and each Phsse & n of an axis (33) attached to the lower bearing star (20) a Kilfsritzel (3?) With cams (34) are gelsgert , di ^er l = lower? Gear interlocking, with the cams (? 4) pushing bolts (30) for switching on the vacuum switch tlsrnc-nt? . (11) controls sini. 6.Stufsnschaltsr according to one of claims 1 to 5 »characterized in that the transmission ratio of the upper gear (23,26) 1: 2 and the lower gear ( 31,3 ?) Eats 1s1. 7. Step switch according to one of claims 1 to 6, characterized in that that on each rotatable drive shaft (25) between the permanent main contact (12) and the auxiliary switch (13) a worm (47) and around this screw an in'Guide rails (49) vertically displaceable clamping member (4H) with an in the Auger gong engaging roller cam (50) is provided. 8. Step switch according to one of claims 1 to 7, Vl-IdUi-C ¹ I characterized, diß each clamping,? Liei (| ^Q ) is provided with a hook (51) which is in a pawl (52) on the movable contact bridge (42) of the permanent main contact (12) engages. 9. Step switch according to one of claims 1 to 3, characterized in that on each drive shaft (25) a transverse pin (46) for temporarily keeping the permanent main contacts (12) and on each movable contact bridge (42) of the permanent main contacts a tension spring (45) for Closing of the permanent main contacts is provided. 10. Step switch according to one of claims 1 to 9 ₅ characterized in that at the lower part of each clamping member (48) one between the clamping member and a PUhrung plate (55) for a contact ring (54) as a movable contact bridge of the auxiliary switch (13) 'acting spring (57) is attached', BATH ORIGINAL -11. 11.Stufenscbalter according to one of claims 1 bip 10, characterized characterized that on each drive shaft (? 5) in one opening of the guide plate (55) a Auslöaerir.g (5S) and at the bottom of each guide plate (55) two horizontally spring-loaded wedges (59) which can be displaced against one another are supported which are attached to each anchoring (60) of the drive shafts (25) and can be released by the release rings (^ S). 1 '/. Tap changer according to one of claims 1 to 1 "*, characterized in that the fixed contacts ρ ti? Eke ( ¹ ^) of the auxiliary switches (1T) are each attached to one ar , for the lower mounting of the Ar.triebcwellen (25) serving bearing plate (27) are arranged. 13. Step switch after one of the cracks 1 bia 1.?, Thereby marked, dai? in each case between the food plate the bearing plate (27) an auxiliary spring ("I) is provided . Step switch according to one of Claims 1 to 13, characterized in that on the underside of each bearing plate. ^ spring-loaded retaining pawls (^ 3) for one clamping cage each _v -. for switching the movable contact pieces (Ti) of the vacuum contact elements (11) are attached, which can be triggered by release bolts (62) on the guide plate (55). 15.S- ^: step chopper according to one of claims 1 to 14, characterized in that each clamping cage (65) is axially displaceable in holding plates (66) for the vacuum holding device (11) and that the holding pawls (63) counteract the action of springs (60) in the switched-on position of the Vakuumechfiltelemente (1 ¹ ) haltbnr iet. BATH ORIGINAL 009883/0692