SE123714C1

SE123714C1 -

Info

Publication number: SE123714C1
Authority: SE
Publication date: 1948-01-01

Description

KLASS 21 c:68/ BESKRIVNiNG OFFENTLIGG7ORD AV KUNGL. PATENT- OCH REGISTRERINGSVERKET BEVILJAT DEN 4 NOVEMBER 1948 PATENTTID FRAN DEN 10 MARS 1947 PUBLI CE RAT DEN 4 JANUAR! 1949 Ans. den V, 1947, nr 2082/1947. Iltirtill en rilning. CLASS 21 c: 68 / DESCRIPTION PUBLIC WORD7 BY KUNGL. PATENT AND REGISTRATION AGENCY GRANTED ON NOVEMBER 4, 1948 PATENT PERIOD FROM MARCH 10, 1947 PUBLIC CE RAT ON JANUARY 4! 1949 Ans. den V, 1947, No. 2082/1947. Iltirtill en rilning.

LIMITED COMPANY FORMERLY THE SKODA WORKS, PLZEN, PRAG, TJECKOSLOVAKIEN. LIMITED COMPANY FORMERLY THE SKODA WORKS, PLZEN, PRAGUE, CZECHOSLOVAKIA.

Snabbrytningsfordelare for elektrisk manovrering av urkopplings- magneter hos trefasiga brytare. 11"ppfinnare: 1. Slan. High-speed distributor for electric maneuvering of disengagement magnets in three-phase switches. 11 "finder: 1. Slan.

Prioritel begird !Ma den, 15 mars 1546 (Tjeekoslovakien). Priority requested, but on March 15, 1546 (Czechoslovakia).

Foreliggande uppfinning avser en snabbbrytningsfordelare f8r elektrisk manovrering av urkopplingsmagneter hos trefasbrytare ficir boga resp. hogsta spanningar med upprepad koppling, sarskilt hos tryckluftbrytare. The present invention relates to a quick-break distributor for electrical maneuvering of disconnection magnets of three-phase switches ficir boga resp. maximum voltages with repeated connection, especially with compressed air switches.

Vid brytare for hogspanning resp. hogsta spanning har man i alit stOrre utstrackning borj at anvanda en aterinkopplingsanordning. Det galler namligen att forhindra, att kortfristiga och overgaende kortslutningar, sadana som fororsakats genom varierleksinflytelser (asknedslag och dylikt), f5ranleda permanent urkoppling. FOr detta andamal anvander man oftast tva slag av OverstrOmsrelaer. Ett av de hada relaslagen utOra de momentant verkande relaerna, vilka astadkomma en kortfristig urkoppling och fornyad inkoppling av en eller flera av brytarens laser, vilket kan upprepas ett flertal ganger, innan det andra relaslaget med tidsfordrojning fungerar, som i handelse av varaktig kortslutning astadkommer permanent och fullstandig urkoppling. At switches for high voltage resp. At the highest voltage, a reconnection device has to be used to a greater extent. Namely, it is important to prevent short-term and transient short circuits, such as those caused by variability influences (ash impact and the like), from causing permanent disconnection. For this purpose, two types of Overstrom relays are usually used. One of the had relay types is the instantaneous relays, which provide a short-term disconnection and reconnection of one or more of the switch's lasers, which can be repeated several times before the other relay type with time delay works, which in the event of a permanent short circuit provides permanent and complete disconnection.

Denna losning av problemet är emellertid icke helt tillfredsstallande, enar darigenom de overgaende, d. v. s. de kortfristiga, oftast i en enda fas uppstilende kortslutningarna icke skiljas fran de varaktiga kortslutningarna, vilka oftast uppsta mellan faserna. However, this solution to the problem is not entirely satisfactory, thus the transient, i.e. the short-term, usually single-phase short circuits are not distinguished from the permanent short-circuits which usually occur between the phases.

Foremal for foreliggande uppfinning är en anordning, som fOrverkligar en dylik sarskiljning mellan overgaende och permanenta kortslutningar. Detta tillgãr sã, att anordningen vid en enfasig kortslutning, som i regel fir av overgaende natur, under kort lid urkopplar den traffade fasen, varefter den aterinkopplar sa snart ljusbagen slocknat. Om kortslutningen i fasen emellertid vidmakthalles, kopplar apparaten ur alla faserna liksom aven brytarens franskiljare, och detta sker permanent. Pa liknande sail urkopplas fullstandigt och permanent, i fall samtidigt tva- eller trefasiga kortslutningar (oftast varaktiga kortslutningar) uppsta. The object of the present invention is a device which realizes such a distinction between transient and permanent short circuits. This means that in the event of a single-phase short-circuit, which is usually of a transient nature, the device disconnects the affected phase for a short time, after which it reconnects as soon as the light bag has gone out. However, if the short circuit in the phase is maintained, the device disconnects all phases as well as the disconnector of the switch, and this takes place permanently. On similar sails, two or three-phase short circuits (usually permanent short circuits) are completely and permanently disconnected.

Uppfinningen kommer att forklaras narmare i del foljande under hanvisning till bifogade ritning, som visar en utfOringsform av apparaten enligt uppfinningen sasom exempel pa denna. Apparaten visas harvid i urkopplat tillstand, fardig for funktion. The invention will be explained in more detail in the following section with reference to the accompanying drawing, which shows an embodiment of the apparatus according to the invention as an example thereof. The device is then shown in the disconnected state, ready for operation.

Fig. 1 visar en vertikalsektion av apparaten (overdelen i sektionen A—A och underdelen i sektionen A'--A' enligt fig. 2), fig. 2 en horisontalsektion enligt planet B—B i fig. 1, fig. 3 en vertikalsektion av apparaten enligt linjen A'—A' (sarskilt den ensidiga oljedampare — fordrojningsanordningen) och fig. 4 slutligen en horisontalprojektion av en detalj hos fordrojningsanordningen i sektionen C—C i fig. 3. Fig. 1 shows a vertical section of the apparatus (the upper part in the section A-A and the lower part in the section A '- A' according to Fig. 2), Fig. 2 a horizontal section according to the plane B-B in Fig. 1, Fig. 3 a vertical section of the apparatus along the line A'-A '(especially the one-sided oil steamer - the diffuser) and Fig. 4 finally a horizontal projection of a detail of the diffuser in the section C-C in Fig. 3.

Sasom framgar av ritningen befinna sig i apparatens stativ 1 tre forskjutbart lagrade med vulster 2'a, 2'b och 2'e forsedda slagstift 2a, 2b och 2c, vilka aro anordnade att lyftas av fjadrar 3a, 3b och 3c (de hada sistnamnda firo icke inritade), och tre tryckstift 4a, 4b och 4c. Tryckstiften sattas i rorelse av medbringare 5a, 5b och 5c, mot vilka fjadrar 6a, 6b och 6e (den sistnamnda icke inritad) vila. Mot dessa fjadrar verkar en starkare spannfjader 7 (fig. 3) medelst en dragstang 8, en stallring 9 och en skiva 10. Sistnamnda skiva är med ganska stort spel lost lagrad pa dragstangen 8, sâ att den kan intaga ett lutande lage i f6rhallande till dragstangen, som om del yore fra.ga om en ledbar lagring. Ski-van lagger sig underifran i tre punkter I, II, III mot tryckstiften 4a, 4b, 4c, vilka punkter bestamma en triangel, vars tyngdpunkt ãr belagen i dragstangens 8 axel. Denna dragstang uppbar i byre anden en liten behallare 11 med oljefyllning 12, vilken anordning tjanstgor sasom ensidig oljedampare f5r.fordrojning av den uppatgaende rorelsen. For detta andamal fir pa stativet 1 med hjalp av en tapp 13 anbragt en trekantig styrning 14 saint en skiva 15, mot vilken en bromsring 16 tryckes me-deist en svag fjader 17. Anordningen medgi- 2— — ver en hastig, icke fordrojd rorelse ay dragstangen 8 nedat men endast en mycket hingsant fordrojd rorelse ay dragstangen uppat, vilken rorelse ax beroende av genomloppsareorna hos en eller Hera sma Oppningar i ski-van 15. As can be seen from the drawing, in the stand 1 of the apparatus there are three displaceably mounted percussion pins 2a, 2b and 2c provided with beads 2'a, 2'b and 2'e, which are arranged to be lifted by springs 3a, 3b and 3c (they had the latter firo not drawn), and three push pins 4a, 4b and 4c. The push pins are set in motion by carriers 5a, 5b and 5c, against which springs 6a, 6b and 6e (the latter not drawn) rest. A stronger tension spring 7 (Fig. 3) acts against these springs by means of a drawbar 8, a stable ring 9 and a disc 10. The latter disc is loosely mounted on the drawbar 8 with a fairly large play, so that it can assume an inclined layer in relation to the drawbar, as if del yore fra.ga about an articulated storage. The ski van rests at the bottom in three points I, II, III against the push pins 4a, 4b, 4c, which points determine a triangle, the center of gravity of which is coated in the axis of the drawbar 8. This drawbar carried in the burr spirit a small container 11 with oil filling 12, which device serves as a one-sided oil steamer for displacing the upward movement. For this purpose, a triangular guide 14 is mounted on the frame 1 by means of a pin 13 and a disc 15, against which a brake ring 16 is pressed by means of a weak spring 17. The device allows a rapid, undistorted movement. ay the drawbar 8 downwards but only a very hinged displacement ay the drawbar upwards, which movement ax depending on the passage areas of one or Hera small openings in the ski van 15.

Om overspiinning eller kortslutning uppstar i en fas (t. ex. i fasen a), tryckes slagstiftet 2a till foljd ay tillslagningen ay ett ankare 19a pa ett icke utritat stromrela ned med en langd d, varigenom den riirliga, pa stiftet isolerat lash) kontakten 20a liigger sig an mot de fasta klammorna 21a, varigenom en i stromkretsen för utlosningsmagneten has ifritgayarande fas alstrad strihnimpuls astadkommer urkoppling ay brytarens tillhorande fas a. Vid denna rorelse hos slagstiftet 2a slam vats-ten 2'a med sin undre ande mot medbringaren 511, som ir anordnad forskjutbar pa tryckstiftet 4a. Till fOljd ay den salunda pa medbringaren 5a uttiyade kraftens excentricitet med avseende p stiftet -la fiirskjutcs emellertid icke medbringaren utan Mammas fast mot stiftet 4a och medfOr stiftet samma stracka d yid sin nedatgaende rörelse. Darigenom sankes skivan 10 yid stallet I med somata belopp d och intager ett lutande Iäge, varigenom tyngdpunkten has triangeln I—HIII saint avail dragstangen 8 fOrskjutes nada med en stracka 1/3d. Etter urkoppling ay den traffade fasen a gar ankaret 19a ater upp,varför aven stiftet 2a med kontakten 20a lyftes tinder inyerkan ay fjadern 3a, yilket ham till 1610, ail strOmimpulsen upphiir on brytarens ifragavarande fas a aterinkopplas. Under inverkan ay fjadern 6a lyftes pa samma gang Liven den numera pa grund av ljaderns 6a centriska inyerkan ej langre pa stiftet 4a fastklainda medbringaren 5a. Enar fjaderns 7 spannkraft ar storre an summan av spannkrafterna has fjadrarna 6a, 6b, 6e, lyflas aven dragstangen 8, skivan 10 och tryekstiftet 4a, dock endast hingsamt i den man oljedampningsanordningen 11 till 18 medgiver. Vid en kortfristig, overgaende kortslutning, i vilket fall ankaret 19a icke slar till pa nytt, atergar saledes hela apparatmekanismen after en yiss tid till det ursprungliga urkopplingslaget, i vilket apparaten am redo for farnyad funktion. If overvoltage or short circuit occurs in a phase (eg in phase a), the percussion pin 2a is pressed as a result of the impact on an anchor 19a on an undrawn current relay down with a length d, whereby the real, on the pin insulated lash) contact 20a abuts the fixed clamps 21a, whereby a stripping pulse generated in the circuit of the tripping magnet has a disconnecting phase which provides a disconnection in the associated phase a of the switch. In this movement of the striking pin 2a the mud 2'a slams with its lower spirit against the carrier 5, which is arranged displaceably on the pressure pin 4a. However, due to the eccentricity of the force thus expressed on the carrier 5a with respect to the pin -la, not the carrier but the mother is pushed firmly against the pin 4a and the pin moves the same distance d by its downward movement. Thereby the disc 10 is lowered in the stable I by somata amounts d and assumes a sloping position, whereby the center of gravity has the triangle I — HIII saint avail the drawbar 8 is displaced nada by a distance of 1 / 3d. After disconnection of the struck phase, the armature 19a goes up again, so that also the pin 2a with the contact 20a is lifted tinder inyerkan at the spring 3a, which he until 1610, when the current pulse stops when the switch phase of the switch is reconnected. Under the influence of the spring 6a, the Liven is now lifted at the same time due to the centric inner force of the ladder 6a no longer on the pin 4a attached to the carrier 5a. If the clamping force of the spring 7 is greater than the sum of the clamping forces, the springs 6a, 6b, 6e are also lifted by the drawbar 8, the disc 10 and the pressure pin 4a, but only in the manner allowed by the oil vaporizing device 11 to 18. In the event of a short-term, transient short circuit, in which case the armature 19a does not strike again, the entire apparatus mechanism thus returns after a short time to the original disconnection layer, in which the apparatus is ready for renewed operation.

Om kortslutningen i fasen a emenertid blir varaktig, star ankaret 19a Ater an mot slagstiftet 2a, sa att medbringaren 5a anyo for tryckstiftet 4a, som annu lake haft lid att hOja sig, med sig nedat med strackan d.fOljd darav sjunker dragstangen 8 utter med en ytterligare stracka 7,, d till totahnattet 7 d, yarvid en Kirlig, pa dragstangen 8 isolerat fast kontakt 22 Jagger sig an mot fasta klammor 23. Darigenom uppstar en strOmimpuls i stromkretsen for huvudurkopplingsmagneten, vilken emellertid nu astadkommer urkoppling av brytarens samtliga faser saint iiven dess franskiljare. If the short circuit in the emen time phase becomes permanent, the anchor 19a again abuts the striker pin 2a, so that the carrier 5a anyo for the push pin 4a, which annu lake had suffered to rise, with it down with the distance d.f0ljd of which the drawbar 8 sinks with a further distance 7 ,, d to the two-night night 7 d, in which a Kirlig, on the drawbar 8 insulated fixed contact 22, abuts fixed clamps 23. Thereby a current pulse arises in the circuit of the main disconnection magnet, which, however, now provides disconnection of all phases of the switch saint. iiven its French separator.

Samma permanenta urkoppling av hela bry Jaren uppstar ayen i handelse ay en tvafasig kortslutning (t. ex. i faserna a, b), varvid tva slagstift, t. ex. 2a, 2b, medelst medbringare 5a, 5b tillsammans med tyenne tryckstift 4a, 4b sankas med strackan d, varigenom dragstangen 8 aven i detta fall drages ned en stracka d, varigenom en i stromkretsen ax kontakterna 22, 23 framkallad strOmimpuls anyo medfor brytarens fullstandiga urkoppling. The same permanent disconnection of the entire bridge Jaren arises ayen in trade ay a two-phase short circuit (eg in phases a, b), whereby two percussion pins, e.g. 2a, 2b, by means of carriers 5a, 5b together with their push pins 4a, 4b are lowered with the distance d, whereby in this case also the drawbar 8 is pulled down a distance d, whereby a current pulse induced in the circuit axis by the contacts 22, 23 entails the complete disconnection of the switch .

Till fOljd ay urkopplingen lyftas ater ankarna 19, slagstiften 2, medbringaren 5 och (tardier under inyerkan ay fjadern 7 langsaint aven dragstangen 8, skivan 10 och tryckstiftet 4, till dess att slutligen alla delarna intaga sitt ursprungliga lage, varigenom apparaten iir redo for ny funktion. As a result of the disengagement, the anchors 19, the striking pins 2, the carrier 5 and the tardier below the inner shaft 7 are lifted along the drawbar 8, the disc 10 and the push pin 4, until finally all the parts take up their original position, whereby the apparatus is ready for new feature.

For undyikande ay ljusbagsbildning yid kontakternas 22 och 23 oppnande under dragstangens 8 fordrojda atergangsrorelse är behallaren 11 forsedd med en elastisk sakringsring 18, som omedelbart fore beroringen ay kontakterna 22 °eh 23 (under inkopplingsrorelsen nedat) Rigger sig an mot ringen 16 och skjuter hart densamma frail skivan 15. Darigenom uppnas, att yid urkopplingen iitergangsrorelsen uppat icke bromsas redan frail begynnelsen, enar oljan kan ohindrat utstromma genom en jamforelsevis stor Oppning, utan fOrst sedan ringen 16 Ater kommit att ligga an mot skivan 15, varigenom kontakterna 22, 23 Oppnas hastigt, under det att den fortsatta rorelsen hos dragstangen 8 och kontakterna 22, 23 fiirsiggar hingsamt. To prevent light bag formation by opening the contacts 22 and 23 during the distorted return movement of the drawbar 8, the container 11 is provided with an elastic securing ring 18, which immediately before contacting the contacts 22 ° eh 23 (during the coupling movement downwards) attaches itself to the ring 16 and pushes the same frail disc 15. Thereby it is achieved that the disconnection in the upward movement upwards is not slowed down already frail beginning, the oil can flow out unhindered through a comparatively large opening, but only after the ring 16 has come to rest against the disc 15, whereby the contacts 22, 23 open quickly , while the continued movement of the drawbar 8 and the contacts 22, 23 seals hingedly.

Claims

Patent claim!

1. Quick-switch distributor for electric maneuvering of disconnection magnets in three-phase switches, especially compressed air switches for high resp. high voltages with repeated connection, can be drawn (Bray, that a pull rod (8) provided with an insulated contact (22) for the effect of the switch's high-coupling magnet saint one and separately Lind one-sided, dissipating device (11-18) acting on the coupling movement is articulated law -rd yid a disc (10), heist in the center of gravity ay a triangle, I yams horns (I, II, IH) three freewheeling mechanisms (2-6) act by means of push pins (4) pd. the disc mat effect ax an uncoupling spring (7 ), yilka mechanisms (2-6) Limo arranged to be directly affected by anchors (19) has oyster current fields in the switch's different lasers (a, h, c).

A quick-release distributor according to claim 1, characterized in that each of the free-running mechanisms (2-61 consists of a displacement or push pin (2-4) displaceably arranged in a statue (1) and a carrier (5) , in which a spring (6) exerts a concentric pressure on the carrier's spiritually stored spirit on the pressure pin (4), while the other spirit is arranged to bring the connecting movement of the striker pin (2) against the action of the latter Udder.

3. A quick-release distributor according to claims 1 and 2, characterized in that the one-way displacement device (11--18) is constituted by a hydraulic mechanism, which consists of a container (11) fixedly connected to the drawbar (8). with suitable liquid (eg oil 12), in which a fixed pin (13) sinks, the spirit of which is shaped like a disc (15), against which a brake ring (17) pressed down from below through a spring (17) an.

4. A quick break distributor according to any one of the preceding claims, noted (Bray, that the disc (15) or the brake ring (16) or possibly had these parts are provided with one or more small flow openings.

5. A quick-release distributor according to any one of the preceding patent claims, characterized in that a locking ring (18) fixed in a spar is arranged on the inner cradle of the container (11) in such a way that it abuts against the brake ring in front of the contacts (22 or 23). (16). Stockholm 104 & Kungl. Eoktr. P. A. Norstedt & Muer 48008