SE189373C1

SE189373C1 -

Info

Publication number: SE189373C1
Authority: SE
Publication date: 1963-01-01

Description

Uppfinnare: H Reinke och W A Rau Priori tet begard pan den 28 september och 27 oktober 1961 (Forbandsrepubliken Tgskland) Vid elektriska organ, sasom transformatorer, drosselspolar och dylikt, utfOra jarnkarnorna som bekant magnetostriktivt betingade svangningar, som via den »ljudharda» oljan overforas till karlets vaggar och fran de sistnamnda utstralas sasom ljud i luften. Inventors: H Reinke and WA Rau Priori tet begard pan on 28 September and 27 October 1961 (Federal Republic of Germany) In electrical means, such as transformers, choke coils and the like, perform the iron cores as known magnetostrictively conditioned oscillations, which are transmitted via the "sound" oil to the man's cradles and from the latter are emitted as sounds in the air.

For att upphava resp. reducera utstrAlningen av ljud har man tidigare forsett utrymmet Indian jarnkarna och karl med fack, som innehâlla en latt fiiranderlig luftvolym och som dora det mojligt for isolervatskan att svanga ut praktiskt taget fritt. Vid inbyggandet av dylika fack stOter man i praktiken ph avsevarda svarigheter, emedan det for det mesta icke finns tillracklig plats i karlets inre. Dessutom finns det risk for att facken bli otata och att Tuft intranger i isolervatskan och darvid skadar isolationen. Icke heller utgor det kanda sattet att bygga dessa fack direkt pa karlets vagg nagon losning pa problemet. Vi-dare aro olika utfi3randen av damningsfack kanda, som anbringas utanfor karlet omedelbart pa eller pa nagot avstand fran karlets vaggar. Damningsverkan av dessa fack är i och for sig mycket god, men det Er i nastan samtliga praktiska fall uteslutet att hell klada karlet med dylika. Pet ljud som stralas ut genom luckorna i bekladnaden, vilka luckor exempelvis vid ledningsgenomforingar, radiatoransatsstallen osv. icke kunna forhindras, star alltjamt avsevart. To originate resp. To reduce the emission of sound, the space has previously been provided with Indian iron and man with compartments, which contain a slightly variable volume of air and which make it possible for the insulating water to swing out practically freely. In the incorporation of such compartments, one encounters considerable responsibilities in practice, because there is usually not enough space in the man's interior. In addition, there is a risk that the compartments will become unattended and that Tuft will intrude into the insulating water and thereby damage the insulation. Nor does the known way of building these compartments directly on the man's cradle constitute a solution to the problem. Furthermore, various embodiments of dusting compartments are known, which are placed outside the vessel immediately at or at some distance from the vessel's cradles. The dusting effect of these compartments is in itself very good, but in almost all practical cases it is out of the question to pour the cloth with such. Pet sound that is radiated through the hatches in the cladding, which hatches, for example at pipe penetrations, radiator approach stables, etc. can not be prevented, still stands considerable.

Gentemot de kanda utforandena hos vatskekylda ljuddampade transformatorer fir enlist uppfinningen en avsevart starkare minskning av ljudets utstralning mojlig. Uppfinningen bestar dari, att utsvangningen av isolervatskan sker vid elastiskt konstruerade stallen av karl- Dupl. kl. 42 g: 1/ vaggen gentemot det det aktuella organet omgivande luftrummet, vilka stallen pa ett visst avstand fran karlvaggen aro tackta medelst och for sig kanda plattor, som icke ha latt fOr att svanga och som ha stor materialampning. Da vid ett dylikt organ isolervatskan har mojlighet att svanga ut fritt vid bestamda stallen hos karlet Orbit de ovriga stallena i praktiken i vim, varvid de icke utstrala nagot ljud. De stallen hos karlvaggen, som man vet ha givits latthet att svanga och ur vilka i sista hand ljudutstralningen sker, aro tackta med plattor med extremt hog materialdampning, vilka plattor aro Hilda under namnet »sandwichplattor» och forhindra ljudets utbredning till omgivningen. Forutom den till fOljd av massan hos dessa plattor upptradande damningsverkan, dvs. missanpassning av utstralaren, omsattes en avseYard del av ljudenergin i varme till foljd av den hOga materialdampningen, varfOr dessa plattor samtidigt damma och dampa. In contrast to the known embodiments of water-cooled sound-steamed transformers, according to the invention, a considerably stronger reduction of the sound emission is possible. The invention consists in that the swing-out of the insulating water takes place in the elastically constructed stables of Karl-Dupl. at 42 g: 1 / the cradle in relation to the air space surrounding the relevant organ, which stables at a certain distance from the male cradle are tackled by means of plates known per se, which have not been allowed to swing and which have a large material amputation. Since in such a body the insulating vessel has the possibility of swinging out freely at the designated stables of the man Orbit, the other stables in practice in vim, whereby they do not emit any sound. The stables of the male cradle, which are known to have been given ease of swinging and from which the sound radiation ultimately takes place, are filled with plates with extremely high material evaporation, which plates aro Hilda under the name "sandwich plates" and prevent the sound from spreading to the surroundings. In addition to the dusting effect occurring due to the mass of these plates, i.e. maladaptation of the emitter, a considerable part of the sound energy is converted into heat as a result of the high material evaporation, wherefore these plates simultaneously dust and vaporize.

Betraktar man. salunda tackplattorna pa de fritt utsvangande kiirlvaggdelarna akustiskt sasom karlyttervagg blir salunda hela karlet I mycket hog grad svangningsfritt. One considers. thus the ceiling tiles on the freely projecting kiirlvagg parts acoustically as a vessel outer wall, salunda the whole vessel thus becomes very highly vibration-free.

De elastiska delarna av karlvaggen bereda vid evakuering av karlet avsevarda svarigheter. Orsakerna till dessa kunna emellertid undanrojas genom att de barorgan, som uppbara plattorna, som icke ha latt att svanga, aro forbundna medelst i tvarriktningen forlOpande barorgan, mot vilka de elastiska delarna av karlvaggen vid evakuering stodj a medelst hallare, som aro fasta vid karlvaggen. The elastic parts of the male cradle prepare considerable evils when evacuating the male. The reasons for this can, however, be eliminated by the fact that the bar members which support the plates, which have not allowed to swing, are connected by means of bar members extending in the transverse direction, against which the elastic parts of the male cradle during evacuation stand by holders attached to the male cradle.

Svangningsamplituderna hos de elastiska karldelarna kunna fOrstoras ytterligare ge- 2— — nom att man bygger in fjaderelement mellan de i tvarriktningen forlopande barorganen och karlvaggen, vilket inverkar gynnsamt pa den fria utsvangningen av isolervatskan. The oscillation amplitudes of the elastic male parts can be further enlarged by incorporating spring elements between the transversely extending bar members and the male rock, which has a favorable effect on the free swinging out of the insulating water.

Ett utforingsexempel kommer nu att beskrivas under hanvisning till bifogade riktning. Karlet 1 for en vatskeisolerad transformator är vid stallena 2, 3, 4 och 5 framstallt sa tunt, att isolervatskan kan svanga at fritt vid dessa stallen. Bredvid dessa delar av kfirlet, som kunna svanga latt, Aro barorgan 6 fastsvetsade vid karlvaggen 1, vilka barorgan uppbara plat-tor 7, som icke ha latt att svanga och som ha stor materialdampning och tacka stallena 2, 3, 4 och 5. Barorganen 6 aro forbundna med varandra medelst ett i tvarriktningen forlapande barorgan 8. Vid vaggdelarna 2, 3, 4 och aro hallare 9, exempelvis skruvliknande bultar, fastsvetsade, vilka hallare stracka sig genom det i tvarriktningen forlopande barorganet 8. Vid evakuering av kflnlet valver sig karlvaggen vid delarna 2, 3, 4 och 5 that till dess att hallarnas huvuden 10 anligga mot bfirorganet 8 och forhindra ytterligare hajning. Genom att man anbringar fjaderelement 11 Indian barorganet 8 och vaggdelarna 2, 3, 4 och 5 kunna svangningsamplituderna far dessa delar ytterligare iikas. An embodiment will now be described with reference to the appended direction. The vessel 1 for a water-insulated transformer is made so thin at stables 2, 3, 4 and 5 that the insulating water can swing freely at these stables. Next to these parts of the keel which can swing easily, Aro bar members 6 are welded to the male cradle 1, which bar members carry plates 7 which have not been easy to swing and which have high material evaporation and thank the stables 2, 3, 4 and 5. The bar members 6 are connected to each other by means of a bar member 8 extending in the transverse direction. At the cradle parts 2, 3, 4 and holders 9, for example screw-like bolts, are welded, which holders extend through the transversely extending bar member 8. When evacuating the joint, the male cradle arches. at the parts 2, 3, 4 and 5 that until the heads 10 of the halls abut against the baffle member 8 and prevent further sharking. By fitting spring elements 11 to the Indian bar member 8 and the cradle parts 2, 3, 4 and 5, the oscillation amplitudes can further increase these parts.

Alaterialdampningen has dylika plattor är i hag grad temperaturberoende. Om forlustfaktorn, som utgor ett matt pa rnaterialdampningen, är som storst for en bestamd frekvens vid exempelvis 20° C, utgor den vid en temperatur av 40° C for samma frekvensomrade endast en brakdel av vardet vid 20° C. Da nu som bekant yttertemperaturen has karlvaggen vid transformatorer och drosselspolar va_rierar mom ett start temperaturomtade alltefter belastningen och givetvis oeksa i beroende av firstiden och uppstallningen, verkar detta temperaturberoende has fyllnadsmaterialet i plattorna mycket ogynnsamt pa ljuddampningen. Aluminum vaporization has such plates is to a large extent temperature dependent. If the loss factor, which constitutes a matte material deposition, is greatest for a given frequency at, for example, 20 ° C, at a temperature of 40 ° C for the same frequency range it constitutes only a fraction of the value at 20 ° C. If the male cradle at transformers and choke coils varies depending on the starting temperature according to the load and of course increases depending on the first time and the installation, this temperature-dependent has the filling material in the plates very unfavorably on the sound evaporation.

Denna olagenhet kan nu forhindras genom att plattorna innehalla flera fyllmedelsskikt, som ha ett dampningsmaximum vid var sin olika temperatur. I stallet for flera fyllmedelsskikt i en platta Kan man givetvis anvanda flera plattor med dampningsmaxima liggande vid olika temperaturer. Da det tackande organet exempelvis utgores av tva plattor, visar det sig lampligt att utfora den ena plat-tan far en maximal dampning vid 20° C och den andra for en maximal dampning vid 40° C. Det darigenom omfattande temperaturomra det torde vara tillrackligt for de fiesta i praktiken fOrekommande fallen. Naturligtvis kan temperaturomradet alltid utakas medelst tillsats av ytterligare plattor med olika kemisk sammansattning hos fyllmedlet. This malfunction can now be prevented by the plates containing several filler layers, which have an evaporation maximum at different temperatures. Instead of several filler layers in one plate, it is of course possible to use several plates with steaming maxima lying at different temperatures. Since the filling means consists, for example, of two plates, it proves suitable to make one plate have a maximum evaporation at 20 ° C and the other for a maximum evaporation at 40 ° C. The thereby extensive temperature range it should be sufficient for the fiesta in practice occurring cases. Of course, the temperature range can always be removed by adding additional plates with different chemical composition of the filler.

Claims

Patent claim:

Water-insulated electrical device, in particular a transformer or choke coil, in which the insulating water brought by oscillations to oscillations oscillates freely.

2. A water-insulated electrical means according to claim 1, characterized in that the bare means, which support said plates, which do not swing easily, are connected by means of transversely extending means, against which the elastic parts of the male cradle support by means of holders which are placed during evacuation. pa karlets vagg.

3. A water-insulated electrical member according to claims 1 and 2, characterized in that spring elements are enclosed between the elastic parts of the male cradle and the bar members extending in the transverse direction.

4. A water-insulated electrical device according to claims 1-3, characterized in that the plates contain several filler layers, which have a steaming maximum at each temperature.

5. Water-insulated electrical device according to claims 1-4, characterized in that the filling plates are built up of at least two plates with steaming maxima lying at different temperatures.

Liquid-insulated electrical device according to patent claims 1-5, characterized in that the vaporization maximum danger fares of the filler layers are at 20 ° C and 40 ° C. Request publications: