DE2125569A1 - Arrangement for actuating a number of contact elements in an electrical high-voltage switch - Google Patents

Description

jAioraiiUxi ^ Zun Eei: ati _? , en a number iontal: t or, .ane in a high-voltage electrical switch

The jjrx'inaun £ relates to an arrangement for operating contact or ^ tmen iiiiierhalb an electric high-voltage switch, χ. · Primarily of switches for voltages of 1000 kV, and :: \. LA- iiliie arrangement of the type in which one for a ^ stan ^ e ^ ei'nc -le '-; e.2 _i' un. ^: üiiii _i) ul £ sciinell of liird- to "iochspannungsootential i'bcr: _ra; s can.

When switching switches for very high voltages, extremely short and precise switching sides are required. This can be taken into account ;; etra:; 3.i .'errleu, by: rian, as suggested in DT-OS 1 9'52, el el.trodyncimiscL Letüti ^ te pneumatic uetatigu or ^ aria, which in immediate ^17: .ne of Eontaktorgane on iiochspan-II ^ ootential are arranged, and the activation: the ^, et 'un ^ sor _t ;; ane j' ti,. ': IRDP JiBUcLal by means of an optoelectronic Si ^ nali DCRI ".ra ;; uri / snystemr. causes. It is always necessary that .1.Ir set the electrodynamic system ^: tL-.uri.f-.sener. Lo on liofM. · ¹ jfuinuri ,; ;; ootential It is necessary, however, that it is both difficult and costly.

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it is easy to supply this energy in a satisfactory manner.

An Energiespeisesyεtem on boiling voltage potential is not required if you have an insulating tie rod for the transmission of the necessary for the actuation of the contact organs Pulses from an actuator arranged on Srdpatential on a pressurized gas valve which is provided for the actuation of the contact elements and is at high voltage potential. EeI of an already known version of this type (DT -..- S 1 25'J Sb5 " v / Ird the movement of the rod is achieved by using a cylinder space Compressed gas is supplied, in which a piston connected to the lower end of the rod is arranged axially displaceably. The initial acceleration that can be given to the rod is relatively limited in this design, it is also difficult to control the speed of the rod as a function of time. However, there is one special possibility to regulate desirable if a rod is to be used to impulse both power and resistance contact elements to give a certain delay between the pulses.

The purpose of the invention is the formation of an actuation arrangement, in which, in addition to sufficient accelerations, speed regulation can also be achieved.

In accordance with that in the aforementioned German patent The embodiment shown has the actuator assembly of

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Invention in the iiähe of the switch contact elements on ilochspannun _w spotential lying pressure gas valve and, disposed in a compressed gas-filled supporting insulator insulating pull rod, which controls the movable valve body "ürdpoiential from and is connected to pistons with two longitudinally zylinderfcrmigei;. · I- laughing axisj at the upper and lower part of ends of the rod. slidably and wherein the transfer side of the upper piston is in communication with the open air. such an arrangement is according to the invention designed so that the underside of the un direct piston bounds a cylinder space, the close a The opening is connected to the pressurized gas-filled support insulator and can be connected to the open air via a quick-emptying valve for actuating the contact organs. By such a construction in which the pressurized gas-filled cylinder space is quickly brought into direct contact with the outside air via an opening with a coarse flow rate will can, one achieves an extremely rapid pressure reduction in the cylinder space, which results in a high acceleration of the pull rod at the beginning of the actuation movement.

In order to achieve the desired rapid emptying of the cylinder space under the lower piston during actuation, it is zv / angular, an electrodynamically controlled drain valve to use a pneumatic valve, as the actuation time for such a valve is particularly short.

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With low / high switches it is necessary to supply zv / ei or several Loritaktorgaiien pulses with a predetermined time delay between the pulses, but with a common trigger signal. For this purpose, the / jriordriung ^ out.ß of the invention is carried out in such a way that do._zv / ei or several pneumatic valves are arranged on high voltage potentiometer, which are influenced by several squats attached to the tie rod «The appropriate time delay between the. '. to * the various contactors- ^ ane 1 can easily be adjusted to this' Jeise by attaching the ITocks to the gtaiv.e so that £. the distance between inside can be changed.

To set an exact time interval between the different triggering errors To receive pulses, it is wli'-cchc-iswert that the movement is ler Pull rod almost constant after the first rapid reading acceleration is held. This can be achieved by reducing the force exerted on the drawbar, which in several ways ¥ iron can be reached relatively easily, as can be seen from the attached drawing.

The drawing shows a Ausführungsfora of the invention, and although Figure 1 shows the "exceeded ungsprinzip the Ausi'Jceirnpule of ARC on Ecchspannungspotential and Figure 2, details of the on ^L:.!.! Ürd.potential arranged Let'J.tigungsorgans.

Fig. 1 shows schematically zv / ei arranged at high voltage potential pneumatic valves 1 and 2, the Ilraftimpulse on

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^ eistun ^ E- υ ζ ν /, a ..! which, stands - .. Οιreaktorgan of an elelccriscnen, switch, s .... a compressed air switch, should give. The triggering of the contact organs is achieved by opening valves 1 and 2 and thereby putting two lines 3 and 4 under pressure from a pressurized gas-filled hollow support insulator 5, which is connected to earth potential via a line arranged :: compressed gas source fed v.dra. Valves 1 and 2 are influenced by z'-rei cams 7 and ^, these are attached to a vertical tie rod 9 made of insulating material in: ler.i support insulator 5, cie cn its upper end with a.-Piston 1 ¹ and at its lower end with a piston 11 with a larger diameter than the piston 10. The pistons are axially displaceable along cylindrical surfaces 12 and 13 on the upper and lower ends of the rod and & en Zylinderflo.ch.en are arranged sealing rings the bottom of the lower piston 11 defines a cylinder chamber 14 via a hole 15 in the piston 11 with the;.. lruckgas / i; efüllten support insulator 3 communicates the cylinder space or 14 is during normal operation under pressure, the cylinder area 14 can be connected to the free air via an electrodynamically controlled pressure valve 16.

In the print ^ asventii 16, the execution of which in principle from ~ i? I &. 2, the necessary sealing pressure is achieved by supplying compressed gas to a space 17 on the underside of a Vontil plate. The valve v / ird bet'-iti _w t in that a lOudensator charged in the vuraias by an induction

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coil 19 is discharged, whereby a current is induced in a short-circuit ring 20 arranged in the valve disk. As a result, the valve disc is lifted off with great force of my seat. At the same time, the pressurized gas can be in the cylinder space 1 ^ to a larger surface of the valve disc 1Ö v, ^r ir: en \: ^ε.ε: .e:;. U resulting in the valve opening time is shortened. Jas closing the valve is achieved by placing a cylinder space on the bottom of an i ^; lückstellun_skoibens 21 pressure ^ s is supplied.

In the drawing, the pull rod 9 and the jivacuation valve Ίο are shown in the normal position, the pressure ρ ,, in the cylinder space 14 being equal to the pressure ρ in the support insulator 5. The same pressure thus prevails on both sides of the lower piston 11, and the upper piston 10 holds the rod in its upper position, and e.g. a force against the resilient AnsciKLag 22? This is, -.renn ■: nar. apart from the relatively moderate force of gravity affecting the rod and piston, equals ρ. Ap, where Ap denotes the area of the piston 10. When an electrical impulse is sent to aas valve 16, the latter is opened, with the cylinder chamber 14 being emptied. The pull rod 9 is thereby under the action of an i.raft F. = (p - ^) A ^ -J . Ap, where A ,, denotes the area of the piston 11, pushed down. ' During the abwürts- -: ehenden movement of the rod, first the valve and then the valve 2 is influenced, whereby the power or resistance control organ of the switch is actuated. The evacuation valve 16 is then automatically returned to its normal position, and the pressure on both sides of the piston 11 is via the hole

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balanced, and the pull rod goes due to the force F =.). Ar- in their upper layer nurfcl :.

When the cylinder space 14 is quickly emptied, the downward force on aie L-can-e Γ1 =? _ (Λ * -λ ^), what

UI el

ciiie koi-continuous L-esck acceleration of the to ₀ stan each result iiat. However, in order to obtain a precise time interval between the triggering times of the two contact organs, it is certain that the speed of the pull rod can vary during the course of the movement. This can be achieved by throttling an opening 2 ^ in a wall 25 arranged directly above the lower piston with the aid of a damper 23 on the tie rod b. This interrupts the refilling of the space above the piston 11 and reduces the force F. You can also use appropriately arranged pressure compensation grooves 26 in the cylinder !! See 13 and possibly by means of a throttle 27 in the exhaust duct of the evacuation valve Λ'S the driving force on the pull rod in the ratio ^: "lt: iio at the moment additionally control" if such a throttle 27 is used, one must before throttling Arrange a .Vusströmungsraum 26 with such a large volume in relation to the cylinder space 14 that you get a sufficient Drucksenkun ^ in the latter space when the valve 16 is opened.

The valves.1 and 2 shown schematically in Fig. 1 are in Principle like the drain valves 16 shown in Fig. 2, however, valves 1 and 2 instead of the electric

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dynamicchen retLti ^ un ^ sanordnur ^ 11, 20 of the valve Λ -.'-, have a purely mechanical .control using pins that are νου den Ijocl-ien 7 and - ^ "oeciij: Iu / .t. In addition, cind the valves 1 and 2 with suG ^: "t2lichc; · Ventilüi'iiiun ^ en 2'j and 50 provided, through the l: ei!". ornalla /.: .cr valves of the ^ ne ^ neitischc Letüti ~ un_'smechanisnus of the Lontaktor: ~ a: ac is in connection with the ireieii air.

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Claims (1)

Patent claims: 1. Arrangement to operate several Lontaktorjane in an electric ilochs ^ annunjsschciitor with a iii close to the ^ enaiitex; , on "": - 3.1: tor ane UiiCl au :: Ilochsjcinniiiv ^ s.'otentially lying 'Druci -. ^ asvc.-iti .'- and with one in a pressurized gas ;;, elill'üen Sti.tsisoi'- .tor ι,> (arranged insulating 2u / stan .- e, ^r ^ the bevre Liche Ventilor;. au from ώ · ά.). otenti- l controls and is connected to zvrei piston which lAn js-2-yl?. in0.erf Or mi jer. i-llAchen at the upper and lower l-.ncien of the Zujstd. e are axially displaceable unci cei (.: e: \ e- the top of the upper. ¹ , i olbens i: </ erbiülun-; nit der: -. reien jahtc nte'nt, dadurcn.: e_ eniiseicrmet, daL the lower - "ELTE of the UNR-or cn 1 oluens (Ί1; ei .. · --η Zyliiiderraun (1 ^) is limited, the i about ei ^ e ^ Ai'fnun ene; (13) the nit _o drucli asjefüllten support insulator {j ) in connection stent and via a quick bet!: tij; - ■ -crc.D iJntleerun ^ sventil (1 · ..) betw .. -, effltijcn c.cr l.ontaktorjane ait. the i'reie air can be connected. 't-% arrangement according to claim 1,; V; ..: lurch ^ ekennzeio; - et,; \ t> ... the r'ivakuieruir; sventil (16) electrodynamically bet-ti_t v. ^r ird. '· ,. /.jfior i, .- '^:; · _ H-ch claim 1 ujcr 2, d ^.' J.urc !: ^ el: e: n: -1 · '. '-er ο -ere i.-jiben (10) a! .smaller area. ■? t than the lower Loiuen (11). 109849/1364 ORIGINAL BATHROOM 4. Arrangement according to claim 1, 2 or 3> characterized in that the pull rod (9) is arranged so αε, ί: it when actuated the contact organs go down. 2. Arrangement 1 "Ur eiue or several I orrfcaktorgcine after one of the preceding claims, characterized in that, daf, riie Contact organs from Druckgasventileij. (1, 2) are controlled, their movable valve organs of arranged on the Zu £ jstan ^ e (Sj Cam (7> S) "can be influenced. 6. iuriordnunj according to claim 5, characterized in that the distance between the squats (7, L ·) is adjustable. 7. arrangement according to one of the preceding claims, characterized in that the Zu / ^ star ^ e (ij by a ι, οοη (2-.) In a üter and in the liL'.he of the lower piston (11) arranged "./and (25) runs that it deceives a DUtljZ un ^ piston (23) ^{adapted to the hole, which after a: certain 1} each _{0 of} the rod {'_,) into the mentioned hole ( 24) ₁ EIU .eführ "cv, ^r ird, wherein the compound zv / een the druckgasgefüllceu post insulator (5) and the room is locked on the top of the lower I.olberis (11). o. Arrangement according to one of the preceding :. Claims, dadurcu _L; ekemizeiCiiiiet that are arranged in the lower cylinder surface (13) one or uehrere I anüle (26) according to any one, ewisren path of the rod (9) a üruckaur ^ facilitated connection zväschen the two sides of the lower piston.. (M) form. 109 8 49/13 6 h - n - ';. . Arrangement according to one of the previous .u.; i {2 ,) -_Mijeorder it, which is in contact with the open air via ei. Droscelorjan (27). 109849/1 36A BATH ORIGINAL η. Blank page