NO122442B - - Google Patents
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- Publication number
- NO122442B NO122442B NO4498/69A NO449869A NO122442B NO 122442 B NO122442 B NO 122442B NO 4498/69 A NO4498/69 A NO 4498/69A NO 449869 A NO449869 A NO 449869A NO 122442 B NO122442 B NO 122442B
- Authority
- NO
- Norway
- Prior art keywords
- cylinder
- electrode
- piston
- pressure
- piston rod
- Prior art date
Links
- 230000008018 melting Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
- H05B7/103—Mountings, supports or terminals with jaws
- H05B7/105—Mountings, supports or terminals with jaws comprising more than two jaws equally spaced along circumference, e.g. ring holders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S269/00—Work holders
- Y10S269/903—Work holder for electrical circuit assemblages or wiring systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49998—Work holding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Clamps And Clips (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Discharge Heating (AREA)
Description
Anordning ved holdere for elektroder i elektriske Device for holders for electrodes in electrical
smelteovner. melting furnaces.
Elektrodene i elektriske smelteovner opphenges vanligvis ved hjelp av elektrodeholdere som griper om elektroden og presses mot denne ved hjelp av hydrauliske, pneumatiske eller mekaniske anordninger. Holderen vil i mange tilfeller både besørge opphengningen av elektroden og formidle strømtilførselen. Når elektroden skal senkes i forhold til holderen, må holderens trykk mot elektroden avlastes før elektroden kan forskyves eller gli gjennom holderen. The electrodes in electric melting furnaces are usually suspended by means of electrode holders which grip the electrode and are pressed against it by means of hydraulic, pneumatic or mechanical devices. In many cases, the holder will both ensure the suspension of the electrode and mediate the current supply. When the electrode is to be lowered in relation to the holder, the holder's pressure against the electrode must be relieved before the electrode can be displaced or slide through the holder.
Man kan også la den strømførende holder bære bare endel av elektrodens vekt mens resten av vekten bæres av en eller flere klemringer som er anbragt over holderen. Ved hjelp av disse kan så elektroden presses eller trekkes nedover gjennom den strømførende holder når dette er nødvendig i forhold til elektrodeforbruket. You can also let the current-carrying holder carry only part of the electrode's weight, while the rest of the weight is carried by one or more clamping rings which are placed above the holder. With the help of these, the electrode can then be pushed or pulled downwards through the current-carrying holder when this is necessary in relation to the electrode consumption.
Som nevnt frembringes og opprettholdes det nødvendige trykk av elektrodeholderen mot elektroden ved hjelp av hydrauliske, pneumatiske eller mekaniske anordninger eller en kombinasjon av disse. De hydrauliske og pneumatiske anordninger har den ulempe at hvis trykket av en eller annen grunn skulle svikte, vil elektroden falle ned i ovnen. De rent mekaniske anordninger sikrer et konstant holdergrep, men de lar seg ikke fjernstyre, de må betjenes manuelt, hvilket er en stor ulempe. As mentioned, the necessary pressure is generated and maintained by the electrode holder against the electrode using hydraulic, pneumatic or mechanical devices or a combination of these. The hydraulic and pneumatic devices have the disadvantage that if the pressure should fail for some reason, the electrode will fall into the furnace. The purely mechanical devices ensure a constant grip, but they cannot be controlled remotely, they have to be operated manually, which is a big disadvantage.
Anordninger hvor et mekanisk trykk avlastes ved hjelp av et trykkmedium er pålitelige anordninger som kan fjernstyres. Ulempen med de anordninger som anvendes idag er imidlertid at de blir meget kostbare og plasskrevende hvis de skal kunne kompensere for de variasjoner i elektrodediameteren som forekommer i praksis. Disse ulemper unngås ifølge oppfinnelsen ved at man for fastklemmingen av elektrodeholderen, respektive klemringen eller klemringene, rundt elektroden anvender et antall spesialsylindere hvor stempelet beveges ved hjelp av et trykkmedium, og hvor det opparbeidete trykk eller press til enhver tid kan overtas automatisk av en mekanisk holderkraft. For opprettholdelse av den mekaniske holderkraft anvendes et system av kiler. Devices where a mechanical pressure is relieved by means of a pressure medium are reliable devices that can be controlled remotely. However, the disadvantage of the devices used today is that they become very expensive and require space if they are to be able to compensate for the variations in the electrode diameter that occur in practice. According to the invention, these disadvantages are avoided by using a number of special cylinders for clamping the electrode holder, respectively the clamping ring or clamping rings, around the electrode, where the piston is moved with the help of a pressure medium, and where the built-up pressure or pressure can be taken over automatically by a mechanical holding force at any time . A system of wedges is used to maintain the mechanical holding force.
Overføringen til den mekaniske holderkraft er trinnløs, dvs. den mekaniske holderkraft kan overta automatisk ved enhver posisjon av den lineære stempelbevegelse når trykket avlastes eller reduseres. Sylinderen over-fører således automatisk det arbeide som er utført av trykkmediet til et rent mekanisk holdergrep som opprettholder det opparbeidete trykk. Sylinderne kan arrangeres såvel tangensialt som radialt i forhold til elektroden samt i hvilken som helst vinkel med elektroden. The transfer to the mechanical holding force is stepless, i.e. the mechanical holding force can take over automatically at any position of the linear piston movement when the pressure is relieved or reduced. The cylinder thus automatically transfers the work done by the pressure medium to a purely mechanical holding grip which maintains the built-up pressure. The cylinders can be arranged both tangentially and radially in relation to the electrode and at any angle with the electrode.
Et eksempel på utførelse av oppfinnelsen er skjematisk illustrert på ved-lagt fig. I og II hvor fig. I viser et snitt gjennom elektroden med tilhørende klemanordning hvor sylinderne er tangentielt anbragt, mens fig. II viser An example of the embodiment of the invention is schematically illustrated in the attached fig. I and II where fig. I shows a section through the electrode with associated clamping device where the cylinders are arranged tangentially, while fig. II shows
i større målestokk et snitt gjennom en sylinder. on a larger scale, a section through a cylinder.
På fig. I betegner 1 selve elektroden, mens 2 er en tre-delt klemring, In fig. In 1 denotes the electrode itself, while 2 is a three-part clamping ring,
og 3 er tre sylindere som klemmer denne ring fast rundt elektroden. and 3 are three cylinders that clamp this ring firmly around the electrode.
Fig. II viser i større målestokk en av sylinderne hvor 1 er elektroden, Fig. II shows on a larger scale one of the cylinders where 1 is the electrode,
2 klemringen, 3 sylinderen. Stempelstangen 4 er forbundét med stempelet 2 the clamping ring, 3 the cylinder. The piston rod 4 is connected to the piston
5 og avsluttes over stempelet 5 i et kileformet parti 6. Et tilsvarende kileformet parti er anordnet i forbindelse med sylinderen 3. Mellom disse to skråflater kan anbringes kiler 7 som passer inn i åpningene mellom skrå-flatene, 8 er en hjelpesylinder i stempelstangen 4, fortrinnsvis i dens kile-formede parti 6, og 9 er et stempel som passer inn i sylinderen 8. 10 er en stempelstang som er forbundet med stempelet 9, og 11 er et åk som forbinder kilene 7 med stempelstangen 10. 12 er fjærer eller andre kompressible elementer som ved belastning gir en fjærende mekanisk holderkraft. Når trykkmedium innføres under stempelet 5 i sylinderen 3 5 and ends above the piston 5 in a wedge-shaped part 6. A corresponding wedge-shaped part is arranged in connection with the cylinder 3. Between these two inclined surfaces wedges 7 can be placed which fit into the openings between the inclined surfaces, 8 is an auxiliary cylinder in the piston rod 4, preferably in its wedge-shaped part 6, and 9 is a piston that fits into the cylinder 8. 10 is a piston rod connected to the piston 9, and 11 is a yoke connecting the wedges 7 to the piston rod 10. 12 are springs or other compressible elements which, when loaded, provide a springy mechanical holding force. When pressure medium is introduced under the piston 5 in the cylinder 3
og det samtidig tilføres trykkmedium over stempelet 9 i hjelpesylinderen 8, vil stempelet 5 vandre utover i sylinderen 3 samtidig som stempelet 9 vil vandre innover i hjelpesylinder 8. Stemplene kan også beveges uavhengig av hverandre med tidsforskyvning. and at the same time pressure medium is supplied over the piston 9 in the auxiliary cylinder 8, the piston 5 will move outwards in the cylinder 3 at the same time as the piston 9 will move inwards in the auxiliary cylinder 8. The pistons can also be moved independently of each other with a time shift.
Når stempelet 5 beveges utover og stempelet 9 innover, vil åpningene mellom kileflatene 6 på stempelstangen og de tilsvarende kileflater på sylinderen 3 bli større, og kilene 7 vil via åket 11, stempelstangen 10 og stempelet 9 automatisk og kontinuerlig fylle denne forstørrede åpning mellom kileflatene. When the piston 5 is moved outwards and the piston 9 inwards, the openings between the wedge surfaces 6 on the piston rod and the corresponding wedge surfaces on the cylinder 3 will become larger, and the wedges 7 will via the yoke 11, the piston rod 10 and the piston 9 automatically and continuously fill this enlarged opening between the wedge surfaces.
Ved avlastning av trykket mot stemplene 5 og 9 vil de selvsperrende kiler 7 mekanisk overta det arbeide og den posisjon som er oppnådd av trykkmediet uavhengig av trykket størrelse og stempelets stilling i sylinderen. Når denne mekaniske holderkraft skal avlastes, settes stemplene 5 og 9 under trykk igjen således at trykkmediet innføres under stempel 9. Når trykket mot stempel 5 har nådd den verdi som det hadde før den mekaniske anordning overtok kraften, blir den mekaniske holderkraft null, og trykket under stempel 9 bévirker at kilene 7 beveger seg ut av åpningen mellom kileflatene 6 og kileflatene på sylinder 3. Ved avlastning av trykkmediet vil nu stemplene 5 og 9 bevege seg tilbake til den posisjon de hadde før syklusen startet. When the pressure against the pistons 5 and 9 is relieved, the self-locking wedges 7 will mechanically take over the work and the position achieved by the pressure medium regardless of the amount of pressure and the position of the piston in the cylinder. When this mechanical holding force is to be relieved, pistons 5 and 9 are put under pressure again so that the pressure medium is introduced under piston 9. When the pressure against piston 5 has reached the value it had before the mechanical device took over the force, the mechanical holding force becomes zero, and the pressure under piston 9 causes the wedges 7 to move out of the opening between the wedge surfaces 6 and the wedge surfaces on cylinder 3. When the pressure medium is relieved, the pistons 5 and 9 will now move back to the position they had before the cycle started.
Anordningen kan anvendes såvel for elektrodeholdere som for klemringer som inngår i elektrodens slipning sut styr. The device can be used both for electrode holders and for clamping rings that are part of the electrode's grinding sut guide.
Claims (4)
Priority Applications (18)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE758767D BE758767A (en) | 1969-11-13 | ELECTRODE HOLDERS FOR ELECTRIC FUSION OVENS | |
NO4498/69A NO122442B (en) | 1969-11-13 | 1969-11-13 | |
ZA706894A ZA706894B (en) | 1969-11-13 | 1970-10-09 | Electrode holder for electrodes in electric smelting furnaces |
YU2564/70A YU34167B (en) | 1969-11-13 | 1970-10-20 | Device for tightening the electrode holders at electric smelting furnaces |
FI702818A FI46015C (en) | 1969-11-13 | 1970-10-20 | Device for holders for electrodes in electric melting furnaces. |
CH1549970A CH565983A5 (en) | 1969-11-13 | 1970-10-20 | |
ES384853A ES384853A1 (en) | 1969-11-13 | 1970-10-23 | Control mechanism for an electrode-clamping assembly in an electric furnace |
FR7038306A FR2066437A5 (en) | 1969-11-13 | 1970-10-23 | |
US85392A US3634589A (en) | 1969-11-13 | 1970-10-30 | Control mechanism for an electrode-clamping assembly in an electric furnace |
TR16925A TR16925A (en) | 1969-11-13 | 1970-11-04 | ELECTROD HOLDER FOR ELECTRODES IN ELECTRIC GRILLING OVENS |
OA54079A OA03514A (en) | 1969-11-13 | 1970-11-06 | Device for supporting electrodes for electric melting furnaces. |
ZM125/70A ZM12570A1 (en) | 1969-11-13 | 1970-11-09 | Improved electrode holders for electrodes in electric smelting furnaces |
CA097717A CA928752A (en) | 1969-11-13 | 1970-11-09 | Control mechanism for an electrode clamping assembly in an electric furnace |
GB5314770A GB1326068A (en) | 1969-11-13 | 1970-11-09 | Electrode holders for electrodes in electric smelting furnaces |
DE2055581A DE2055581C3 (en) | 1969-11-13 | 1970-11-12 | Electrode holder for electric ovens |
SE7015272A SE374857B (en) | 1969-11-13 | 1970-11-12 | |
DO1970001770A DOP1970001770A (en) | 1969-11-13 | 1970-11-12 | SUPPORT ARRANGEMENT FOR ELECTRODES OF ELECTRIC FUSION OVENS |
AT1024670A AT302678B (en) | 1969-11-13 | 1970-11-13 | Device on holders for electrodes in electric melting furnaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO4498/69A NO122442B (en) | 1969-11-13 | 1969-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO122442B true NO122442B (en) | 1971-06-28 |
Family
ID=19880369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO4498/69A NO122442B (en) | 1969-11-13 | 1969-11-13 |
Country Status (18)
Country | Link |
---|---|
US (1) | US3634589A (en) |
AT (1) | AT302678B (en) |
BE (1) | BE758767A (en) |
CA (1) | CA928752A (en) |
CH (1) | CH565983A5 (en) |
DE (1) | DE2055581C3 (en) |
DO (1) | DOP1970001770A (en) |
ES (1) | ES384853A1 (en) |
FI (1) | FI46015C (en) |
FR (1) | FR2066437A5 (en) |
GB (1) | GB1326068A (en) |
NO (1) | NO122442B (en) |
OA (1) | OA03514A (en) |
SE (1) | SE374857B (en) |
TR (1) | TR16925A (en) |
YU (1) | YU34167B (en) |
ZA (1) | ZA706894B (en) |
ZM (1) | ZM12570A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2514981B1 (en) * | 1981-10-19 | 1985-08-23 | Elkem As | ELECTRODE HOLDER DEVICE FOR SELF-HARDENING ELECTRODES |
US7075966B2 (en) * | 2004-05-20 | 2006-07-11 | Hatch, Ltd. | Electrode column |
CN105072733A (en) * | 2015-08-28 | 2015-11-18 | 钦州西北冶金设备有限公司 | Ferroalloy electric furnace electrode internal contracting brake apparatus |
WO2022241486A1 (en) * | 2021-05-11 | 2022-11-17 | Arjun Sachin | Furnace electrode clamping device and associated furnace |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1766812A (en) * | 1926-06-09 | 1930-06-24 | Wyman Gordon Co | Centering machine |
US2872494A (en) * | 1954-10-13 | 1959-02-03 | Knapsack Ag | Device for tightening and loosening current supply plates on electrodes in electric furnaces |
US2911455A (en) * | 1956-04-13 | 1959-11-03 | Sunrod Mfg Corp | Electrode clamp |
-
0
- BE BE758767D patent/BE758767A/en unknown
-
1969
- 1969-11-13 NO NO4498/69A patent/NO122442B/no unknown
-
1970
- 1970-10-09 ZA ZA706894A patent/ZA706894B/en unknown
- 1970-10-20 YU YU2564/70A patent/YU34167B/en unknown
- 1970-10-20 CH CH1549970A patent/CH565983A5/xx not_active IP Right Cessation
- 1970-10-20 FI FI702818A patent/FI46015C/en active
- 1970-10-23 FR FR7038306A patent/FR2066437A5/fr not_active Expired
- 1970-10-23 ES ES384853A patent/ES384853A1/en not_active Expired
- 1970-10-30 US US85392A patent/US3634589A/en not_active Expired - Lifetime
- 1970-11-04 TR TR16925A patent/TR16925A/en unknown
- 1970-11-06 OA OA54079A patent/OA03514A/en unknown
- 1970-11-09 GB GB5314770A patent/GB1326068A/en not_active Expired
- 1970-11-09 CA CA097717A patent/CA928752A/en not_active Expired
- 1970-11-09 ZM ZM125/70A patent/ZM12570A1/en unknown
- 1970-11-12 DE DE2055581A patent/DE2055581C3/en not_active Expired
- 1970-11-12 SE SE7015272A patent/SE374857B/xx unknown
- 1970-11-12 DO DO1970001770A patent/DOP1970001770A/en unknown
- 1970-11-13 AT AT1024670A patent/AT302678B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB1326068A (en) | 1973-08-08 |
SE374857B (en) | 1975-03-17 |
DOP1970001770A (en) | 1976-01-09 |
OA03514A (en) | 1971-03-30 |
DE2055581C3 (en) | 1974-06-12 |
CH565983A5 (en) | 1975-08-29 |
FI46015C (en) | 1972-11-10 |
BE758767A (en) | 1971-04-16 |
FI46015B (en) | 1972-07-31 |
CA928752A (en) | 1973-06-19 |
AT302678B (en) | 1972-10-25 |
ZM12570A1 (en) | 1971-06-22 |
YU256470A (en) | 1978-06-30 |
TR16925A (en) | 1973-11-01 |
YU34167B (en) | 1978-12-31 |
ZA706894B (en) | 1971-07-28 |
DE2055581B2 (en) | 1973-11-15 |
ES384853A1 (en) | 1973-03-16 |
DE2055581A1 (en) | 1971-05-19 |
US3634589A (en) | 1972-01-11 |
FR2066437A5 (en) | 1971-08-06 |
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