DE1889471U - CUP CAPACITOR WITH AN APPROPRIATE ROCKING PROTECTION OF THE POWER SUPPLY CONNECTOR DEPENDING ON INTERNAL OVERPRESSURE DUE TO DEFORMING A HOUSING PART. - Google Patents

Description

'.A. 052 287 * 211.61

Dipping. F. "Weicκ; M-ATsrN, Dr. Ing.A.Weickmann ^ Dipl.-Ing.H-Weickmann Dipl.-Phys. Dr. K. Fincke patent attorneys

8 MÜNCHEN27, MOHLSTRASSE 22, CALL NUMBER 483921/22

ABac

fes ^

Münohen, - den- "22 Jan. 19

QMBR *, Landshut / Bavaria

Cup capacitor with a depending on. inner Address overpressure by deforming a part of the housing- ' the tear-off seal of the power supply connection.

Liquid-impregnated cup capacitors with a Tape dielectric made of paper, plastic film or the like "have., The property that they are with strong inner -. Defects and sufficiently high voltage explosively can tear open. As a result, dirt in the environment occurs not only due to the impregnating agent which is sprayed in the process of the capacitor, but it can also considerable consequential damage caused by the tension itself caused. ~ - ._

The internal defect is often indicated by a glow of tension lying dielectric initiated. This 0-1 Immen leads i.a. to a partial decomposition of the impregnation liquid and thus to gas formation, whereby a so far increasing Internal pressure can result in it tearing open the; Housing comes. . -. :

To the undesirable. Bursting of the cup and the with it. related.Damage- to avoid exists; the possibility,: - . . to use the internal pressure and with its help ... to operate membrane-like G-ebil.de, on which current conductors; .- ". that are attached to; deformation of the membrane on tension and when a certain ZV load is exceeded tear, as a result of which the capacitor is separated from the last in one or two poles. However, the additional construction elements required make the capacitor more expensive and are mostly custom-made. On the other hand, a Beeher capacitor always needs one additional protection if it has to be completely explosion-proof (e.g. when used underground) or special Overloads in operation cannot be avoided with certainty. In addition, it is desirable that a capacitor also in the unavoidable: not the end of its lifespan; bursts open, but is automatically separated from the last. ..;

The firing refers to a normal cup construction with insignificant, practically not expensive Ihde-. to utilize the system in such a way that it meets the requirement of a reliable overpressure protection at no special expense.

is a cup-type Kohdensator with cover * Die_ Ans ehlußdrahtW? are 'in this execution type ::::' 5om "winding-through: insulating pieces, which; are connected to the metallic cover, to .the / .outer-connection elements ^ - - ■ '- Apart from its function, the lid can seal

Completion of the _cup: bring / ^ also idle task of before mentioned ^{en: AEE: mbrä:} accept non-ferrous, when r% accordingly ^-:: We dimensioned c U order; the; or: to tear the insellus wires ->. "If there is an overpressure inside the capacitor and the cover is arched outwards, it is necessary to provide the wire with a predetermined breaking part and to prevent it from yielding under tensile stress ..

In Pig. 1 1st. a Beeher capacitor shown in / principle. The cup 1, which the impregnated winding · 3 and the: contains impregnating not shown the metal-, is ,, _-: metallic cover 2 crimped. The impregnating agent fills the cup at room temperature, depending on its temperature. predominantly,: but not completely off »; The on; Bucket wire - adjacent. Spacer 8 should be the / winding 3 and each of the lower part of the connecting wires. 5 or 5 · in their position: fix so that their yielding in the event of a "' deformation of the;" Dek-- .-. kels is out "impossible .. In view of the inserted ^ / early lorm; the .Deckels can: the hand even with a large internal pressure / not yield .. The winding 1st to a _{Wickeldorn-:;:..} EOHR 4 gewickelty : which ^ also serves to; its stiffening. But since the coil is axially flexible due to its structure but to a very small extent, the centering and the residual fit is achieved through a blessing plate 7 Made of / .- ■ Reinforced insulating material. On the cover ^. there are .the two.: _; / "" _ '/ I s ο Ii he leads through 9 ^{; with} the. connection flags / TO ", _: an den: /. the upper ends of the / connecting wires 5. or 5 ^1. are soldered. ^:

In ELg. 2 is shown how the metallic lid falls inside. Overpressure bulges outwards -and thereby the connecting wires 5 and 5 ¹ at the predetermined break points 6,; 6 'or 6 ^t! and 6 '·' flap separates. -

Prerequisite for a proper process of separating the condenser from the Efetz when it occurs too high an overpressure is the tightness of the connecting wires, a fixed centering and axial support of the roll by the counter plate and the spacer as well the exact temperature of the condenser included its impregnating agent when it is removed from the liquid, while on a very specific, increased temperature to be maintained impregnation compound of the Impregnation kettle.

The described type of internal structure of can capacitors with such tear-off seals can be used by everyone Design, regardless of the shape of its base, can be used, provided the shape of the metallic Lid ensures that only when a certain overpressure is exceeded, the predetermined brewing parts can tear open.

Claims (4)

RA. QS22 _ ς ■ - ■ ■ S e hu t ζ ans ρ r ti e h e: "U cup capacitor with a depending on internal overpressure due to deformation of a housing part ! ■ breißsioher-ang des Stroiazufüiir-angsanseh; lusses, dadmreh marked, that on the one hand the cradle with the lower part of the connecting wire in the cup against ibcial movement, on the other hand the olaerhall) of the SolllDruehstelle lying rope of the connecting wire is connected to the Beekel so that / at inner pressure, the bulge of the lid, the breakage of the Connection wire it leads to the predetermined breaking point 2. Beeher capacitor according to claim 1, characterized in that more than one connecting wire is designed as an AWreißsieherung. -. ^; : 3 _# cup capacitor according to claims 1 and 2, characterized in that the winding is supported against the lid edge with a stiff casing 4. Cup capacitor according to claim 1 and 2, characterized in that the winding in the cup is held immovably with respect to the lid by a Abdeek "plate and / or a spacer *