DD216102A1 - ARRANGEMENT FOR OBTAINING GAS LAID IN THE INSULATING OIL OF A HIGH VOLTAGE UNIT - Google Patents

Abstract

Arrangement for obtaining gas dissolved in the insulating oil of a high-voltage apparatus, in particular a transformer, in which a gas collecting vessel is connected via a semipermeable membrane to the container of the high-voltage apparatus, in particular transformer tank. It is a low-interference, yet maintenance-friendly attachment of the membrane can be achieved so that it can cope with the mechanical operating and faulty stresses and beyond can be easily changed. For this purpose, the membrane is mounted in front of a provided in the central region of a flow chamber opening and the flow chamber outside the container wall attached. It is flowed through upper and lower throttle holes in the Behaelterwandung of Isolieroel the container. For the membrane a Stuetzsieb is provided, which is located on the side of the gas collecting container and is clamped together with the membrane by means kreisringfoermiger seals between the connecting flange of the gas collection container and the Stroemungskammer.

Description

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Title of invention- '''''

Arrangement for recovering gas dissolved in the insulating oil of a high-voltage device

Field of application of the invention

The invention relates to an arrangement for obtaining gas dissolved in the insulating oil of a high-voltage device, in particular a transformer, by means of a semipermeable membrane.

Characteristic of the known -technical; solutions

For removal of dissolved in insulating oils; Gas is a-arrangement known, in which a 'transformer housing with a semipermeable, ie, gas-permeable membrane having at the' entry gas vessel is detachably connected, 'from which the. In thermodynamic equilibrium located out-diffused gas is removable (DD 14805) · 2ur Attachment of the gas vessel is provided a Verbindungsstutzan the transformer housing. Gate; the outlet of this nozzle is' attached to the membrane. The clamped membranes have to cope with high mechanical and thermal operating and interference stresses. If polyethylene membranes are used, they often do not withstand the stresses of the known type of sinus, even if they are used for this purpose

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Treatment were subjected to increasing stability, ¹ so that their life is low. Frequent changing of the membrane leads to considerable expenses and losses.

. · '/ ^-: object of the invention "..

The aim of the invention is' a low-interference, yet maintenance-friendly universally applicable arrangement for gas production by means of semipermeable membrane. ν '

Explanation of the essence of the invention \ "-

The invention has for its object to provide an arrangement in which the. Diaphragm is mounted so that it can withstand the mechanical operating and interference stresses and moreover can be changed more easily. This is achieved by mounting the diaphragm in front of an opening provided in the central region of a flow chamber and attaching the flow chamber to the outside of the container wall, and via C / bare and lower throttle bores in the container wall the container is flowed through ,: being provided for the membrane, a support wire, which, on the side of the GassammeIbehälters''liegt and zusammen'mit the membrane by means of seals between the _{kreisringfönniger:} connecting flange of the Gassasmie'lbehälters and the flow chamber is clamped: - ' .is. ''. ·. ' , : The insulating oil enters the flow chamber through the upper orifices, where it cools and flows along the membrane, with gas diffusing through the membrane and entering the gas container the membrane and the wall of the flow chamber, the insulating oil flows back through the lower throttle holes back into the device container.

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caused by short circuits and other influences. ··. can. Furthermore, they allow a simple change of the membrane. · The insulating oil flowing out splashes against the housing; the flow chamber and flows down. It is expedient, with the membrane removed, to place a cap, preferably made of plastic, on the membrane opening of the flow chamber, in order to avoid splashing out of oil. In a further embodiment of the invention> eist the flow chamber above dei ^! upper throttle bores a volume, 'ciäs for receiving the gas in the gas collecting container is dimensionedV This ensures that. In the case of a defective membrane, the gas of the cell in the flow chamber "catches and can not get into the insulated container." In addition, a further variant provides for the installation of a protective sieve on the side of the container facing the fluidizing element. ... 'membrane to prevent, in case of destruction of the membrane, the load on the' flow chamber and blockage 'of the throttle holes .. The sieve supporting the membrane has holes which are stamped so that they are not sharp Hanging but a vault to the gas collection chamber have * Bei.Hindurchdringen of insulating oil through the throttle holes through _; pressure waves in the Isolierölaüffang- and -abführungsteil the membrane to the gas chamber! Dodge. Dodge, without free-membrane surfaces against a scharffe''Kante: are pushed and cut out. in this case, the membrane clings. '' .. · on the side walls of the holes, causing the free surface and therefore the auf'ungestützte free e Membranflachen .wirkenden. Forces decrease. '

Embodiment _:. ,

The invention will be explained in more detail by means of an embodiment with reference to the drawing, which in addition to the basic general representation also contains an exploded representation.

The membrane 1 is placed on a sieve 2. Both will be with '. two seals 3 between the flange of the gas collecting nozzle 4, and the flow chamber 5, which has a drain cock 6 for discharging the membrane change from the throttle bores 7 and 8 when a membrane change is necessary. The insulating oil 11 can enter through the upper throttle holes 7 in the Str'ömting'skammer 5 , the dissolved gas by diffusion through the membrane 1 on the GassammeIgefaß, Cool down on the membrane and on the housing of the flow chamber 5 'and flow back into the device vessel via the lower throttle bore row. Through, cooling plates 13, the housing of the chamber 5 can be cooled so that the insulating oil can be cooled. Out Case: 12 protects the membrane mounting device from overheating (Prost) during operation.

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Claims (4)

Srfindungsanspruch Arrangement for obtaining gas dissolved in the insulating oil of a high-voltage device, in which a gas collecting vessel is connected to the container of the high-voltage device, in particular the transformer vessel, via a semipermeable membrane, characterized in that the membrane is in front of a The flow chamber is attached to the container wall and the upper and lower throttle bores in the container wall are flowed through by the insulating oil of the container, a support screen being provided for the membrane Side of the gas collecting container and together with the membrane. By means of annular seals between the connecting flange: the gas collecting container and the flow ^] chamber is clamped .... ^ 2 * Arrangement according to item 1, characterized in that the support screen consists of a board with punched holes,., Which have to avoid sharp-edged hands bulges for Gässanimelgefäiä-out. 3. Arrangement according to item 1, characterized in that the '' Ströfflungskammer. above the upper throttle bores has a volume which is dimensioned for receiving the gas present in the GassammeIbehalter. 'ν 4, arrangement according Puakt 1 bis''3, characterized in that on the Strömungskaimner facing side of the membrane, a protective screen is attached. For this 1 sheet drawing.