DE1765325C - Compressed gas switch - Google Patents

Description

The invention relates to a compressed gas switch with a switching chamber that is constantly filled with compressed gas. with a pair of cooperating movable contact pieces arranged within the switching chamber, one of which has a shorter stroke than the other and of which at least one is a nozzle contact piece for discharging the extinguishing gas, and at least one is spring loaded in the switch-on direction. With one piston per contact piece, which is movable in a cylinder and is firmly connected to the associated contact piece, with at least one Blas.entil. which in the closed state interrupts the discharge of extinguishing gas through the nozzle contact piece and whose movable part is firmly connected to one of the contact pads. and with control valves, through which the application of the drive piston of the contact pieces is controlled so that at the beginning of the disconnection process only the KoI ben of the contact piece with the shorter stroke is acted upon with pressurized gas from the Sehaltkammer so that both contact pieces are accelerated together in the same direction and only with a time delay also the piston of the other contact piece. and that the contact piece with the shorter stroke is held by a stop after completing its stroke, while the other contact piece is moved further up to the end of its stroke in the switch-off direction, the movable part of the blow valve ring-shaped around the contact piece with the longer stroke and with it The piston is firmly connected, the stationary part of the blow valve is formed by a ring-shaped part surrounding the contact piece with the shorter stroke and fixed against this, the piston of the contact piece with the longer stroke in the switch-off direction is acted upon by the opening of the blow valve with pressurized gas from the switching chamber is, and two control valves are present, of which the piston of the contact piece with the shorter stroke is immediately applied to the piston of the contact piece with the shorter stroke in the turn-off direction with compressed gas from the switching chamber and the second valve controls with a delay so that the piston of the contact piece with the long After the arc has been extinguished, compressed gas from the switching chamber is acted upon by this second valve in the switch-on direction, so that both contact pieces are returned to their switch-on position under the action of the switch-on spring, according to patent I 665 2S8.

The switch according to the main patent has the disadvantage that the reclosing of the switch depends on how long an operating rod is pulled, through which the first control valve can be brought from the outside into a position in which an opening leading to the switching chamber is opened, so that extinguishing gas under high pressure in the

.-, _rrlü m for moving the piston of the con- tantly high pressure "™« ** ' ⁴ ^

^Z > ^lind ι "is released with the shorter stroke. Which is within the blocks 16. 1 and U-

^iak r eIU the effective space of the /.Winders of the gate 18 located switching chamber 33 du- »

^{D; ih} η S uenenlils via a l.eituns'mil /e.tv.r- Kontak.stück 21. 26 and \ ^d »™ ^ f _{/ u} den

^rAC1 ; i. \ Vukune with the Zv, linderraum des Kon- 5 drainage channels through to the Aub, η u Iv _d ' _{] Λ} .

T Γ. with the shorter stroke in the open Vcrbm low pressure room .flows .η * ^. "^ ¹ _β ^ _n

,. _rf i:, you. _g . «* the Aufgah. .,round. d: ese C.

rw; ^ r _fl ndun ^ ema, thereby, - .. ^ YES the ^; ili cylinder room / um 'ik-because of the KoI opening 41 / ur switching chamber 33 ·' ■ · Koniaktstückes with the shorter stroke in the. .,. , kKiiieke is the real

Mnchtuntt over a channel with the first To control the K> u.aK s Ke ^ ₁ ,,

'- "Ι and the room / um moving the same room 42 d, s />" ^ _{lbcIls 27}

: The Komaktstüekes _mil d, m longer stroke> 5 of the cash to the ^ '"^^^^ S ^ SUU ■ η channel with the / bore control valve eni dui.h e.nen channel 43 ml""J control valve

„Α Jcr HoelUrueUchalikam.ner or with de- ervent.l 44 / ug;» nui ^ ■ ^Du ^ ¹ J ^; _dur , _{h cvuc} Ot! -. U,! T or in connection with a Nictler pressure chamber, the ^Ζ > ^{| ΐη} . ^ϋ "" ^, | - "" can ground Jct / t »& M because, first valve of voltage 45 with the Schaltka ™ ·" ^lc _VcrblI1%.. "" ΐ i wlcr by eiiu · I κ-r and the open valve through a reder ao opening 46 m «the ^Νΐ ^ ^Γ " ^ 3 * _h . _{in the} en - "-.- blind with piston controllable .st. and d:, K dung are set in the R ^ ustand _ndcr _

: ;; - :, amc room of the cylinder via e.ne line ^^^ £ .1 38 m open /,!....er/üeernder effect with a to the room 42 with the N ^L ^ ^ru -, ^ _wirii then

L Sehaltkammer turned away from Niederdrucksene Vennndung and the ^^ ⁿ _pedrlIL U _t .

", Valve located chamber," open Ver, 5 through j "KcLr 47 m you. ^^^ 33 _hlΛ .

ii: ^ir verification according to the I-.rfindun * w.rd raen- sen is. Next '^ - ^ «^ flreh'on'en J; .-! ex.elsweL on the basis of the / elongation allow- 22 / ur Steuerunj des ^ »^ J ^ _{Slcucr% l} .ntil 50 *. _Jie emen Axialschn.U des Pre.gasschaMers ^ «- ^^ nerves ,,, came, the ^ -

^ S »« drawing are, 0 and I. ,, ektnseh _fi - ^ ™ -, * ^^ ΏΐΓ »^« f-

_tcn,. Contact carrier with electrically conductive chamber 32 ^ r ^ _{t / t wcrd} en.

h _0il;, “BliKken 16, 17 provided Mnd. which by ^ riru ^ wm ^ * 53 _{) p the}

_IKn tubular insulator 18 at a distance of the Steuerx.ntil 50 « _{dic open} ,

“Jcr be held. The block 16 carries a Lagt ^ ^hdlt ^ _n J _{g2 iUfnet lsl shown} . The

j \ Rührstück 19 with a central channel 20 51 closed and the ÖK ™ £ ^ _Under 54 groove

η Xhk.> sen of the quenching gas. In this Rohrstuck control valve 50 can through ^ ^ ^ ^

, _L ; n first tubular contact piece 21 ver ^ ^ e » ⁵⁵ ," _die Lat g ^ ^ _h , _{| lsscp}

arranged to slide. The block 16 carries a / y opening || geottn ^ t unü bj ^ ^. ^

liiuier 22, in which a piston 23 is movably arranged 40. The .f - ^ "^" ™ acting tube 57 from Ko _n t This piston by a relatively .st a Kses with ^ J ^^ D tube 57 is about £, "turn-on or return spring 24 loaded. hermater '»' ^ ^rb _m J ^d ^ _nc ⁰ J _{ ^L _nuni , _6I . their through; kük 21 it i «the piston 23 firmly f -" ^ f ^ "li 62 intellbar

-7 «a partial« «i _? ZjUndjr “i. _? emer

: Switch on or reset ^ _m J ^ _nc J _{nuni , _6I . whose you

Contact piece 21 is mi "the piston 23 fixed comparable F" _m ^ _e ^ FNEs "divisible Stiles 62 adjustable

i. _? emer der ₌ ^ S:

^^^ the S, euervent, M4

ßSSK. 5r ^ SS ^ J ^ _k me ^ gs ^^ ann das S, euervent, M4

axirl movably arranged. This contact piece through around. ^ ^u g ^s "" ^ _uc2 ogen be in the

£ in "a? M cylinder space of the pipe section 25 from the outside ^ he in ** ^ jj ^ _öff 46 ge

movable piston 27 attached. so, u O ' ^now j ⁴³ JJ _{ß extinguishing gas} under high pressure

In the shown switched-on state, ie in the chU ^ en w rtk sou ^^ _and " _da s

conductive connection between the pipe

fÄggg

The contact pieces are acidic during the switch-off process. _{and the K} ^ 21 and 26 are initially moved upwards together until 60 me 33, J ™ ⁰ ». ™ → _t _ _The contact pieces 21 and the piston 27 hit a stop 30, and ^tak ^" ^ck 2 _nn ie runs and the circuit arc is then the 'e contact pieces are separated by> vonem ^ J' Jg * SZ contact pieces through, that the contact piece 21 we. He after through "J" au _{SofQrt after d K}

is moved above. As soon as the K ° "Wj""^'" ^ JJ "" ück 26 must move the piston 27 against the stop of the switch-off direction w, r ^ I «r. Through a« 5 «-« J ^ J ¹ J, _{If the pull} , _a nge 58 is released, the ring-shaped closing edge 31 of the piston 23 and 30 is pushed _{and the rest} position is due.

! to ¹ ! ^ * ^^^^ -iiehrt and the Z, in _the space 42 neither m, the

Low pressure chamber 38 is connected. The contact piece 26 is then moved back to the rest state by the escaping extinguishing gas and a spring 59, because the contact piece 21 is still in the deactivated end position or in an intermediate position. finds.

As soon as the blow valve 31, 32 is opened, extinguishing gas is passed under high pressure through the line 60, 61, 57 acting with delay to the cylinder chamber 56, so that a certain time later the control valve 50 pulled into the right-hand position and thus extinguishing gas under high pressure is passed through the opening 51 and the channel 49 to the cylinder space 48. This will a high ts also in the cylinder space 48 of the cylinder 22 Pressure is exerted on the piston 23 so that the Pressures on both sides of the piston 23 become equal, i.e. H. this piston is pneumatically relieved. The piston 23 is then pressed down again by the spring 24, and the blow valve 31, 32 is closed again.

The time difference between the filling of the cylinder space 42 and the filling of the cylinder space 48 with extinguishing gas under high pressure is achieved by adjusting the passage of the opening 61 in the Line 60, 57 selected so that the contact pieces 21 and 26 just long enough in sufficient Be kept at a distance from each other in order to give the extinguishing gas an opportunity to the switching arc Clear.

1 sheet of drawings

Claims (3)

Claim: PreLS gas shell with a switching chamber that is constantly filled with pressurized gas. with a pair of cooperating movable contact pieces arranged within the holding chamber, around which one has a shorter stroke than the one and of which at least one is a nozzle connector for discharging the extinguishing gases and at least one is spring-loaded in switch-on connection. With one piston per contact piece, which can be moved in a cylinder and is firmly connected to the associated contact piece. with at least one blow valve, so that in the closed state the Lüsehgasubtuhr interrupted by the nozzle "contact piece and whose movable part is firmly connected to one of the contact pieces of the switch-off process, only the piston of the contact piece with the shorter stroke is pressurized with compressed gas from the switching chamber in such a way that both contact pieces are accelerated together in the same direction and only with a time delay also the piston of the other contact: ' astückes., and that the contact piece with the shorter Hi "b nac ^K deferment is its stroke retained by a stop. while the other contact 'Ueck extends to the end of its stroke in Ausschaitrichtun" is moved with the movable part of the blow valve · that The contact piece with the longer stroke surrounds it in a ring shape and is firmly connected to its piston nde part of the blow valve is formed by a ring-shaped part that surrounds the contact piece with the shorter stroke and is stationary against it, the piston of the contact piece with the longer stroke in the switch-off direction is acted upon by the opening of the blow valve with pressurized gas from the switching chamber, and two control valves are present, of which during the Ausaltvorgangcs the first valve the piston of the contact piece with the shorter stroke immediately applied in the direction of switching off with compressed gas from the switching chamber and the second valve controls with a delay so that the piston of the contact piece with the longer stroke through this second valve after the arc has been extinguished, pressurized gas from the switching chamber is acted upon in the switch-on direction, so that both contact pieces are returned to their switch-on position under the action of the switch-on spring, according to patent 1665258, characterized in that the cylinder space (42) for moving the piston (27) of the Contact piece (26) with the shorter stroke in the disconnection direction via a channel (43) with the first control valve (44, 45, 46, 47) and the cylinder space (48) for moving the piston (23) of the contact piece (21) with the longer stroke Via a channel (49) with the second control valve (SO, 51, 52, 53) either with the high pressure switching chamber (33) or with the outside air or a low pressure chamber (38), that the first valve can be connected from the outside and the second valve is controllable by a spring (53) and a cylinder (54) with piston (55) and that the effective space (56) of the cylinder (54) via a L.jituna (57) with a time-delaying effect with a the side facing away from the switching chamber (i3) of the Niedcfdruckseite 31asventils (31st 3.I) located chamber (63) is in open connection.