GB1209133A - Arrangement for automatic control of electrodes in smelting furnaces equipped with an even number of electrodes - Google Patents
Arrangement for automatic control of electrodes in smelting furnaces equipped with an even number of electrodesInfo
- Publication number
- GB1209133A GB1209133A GB6992/69A GB699269A GB1209133A GB 1209133 A GB1209133 A GB 1209133A GB 6992/69 A GB6992/69 A GB 6992/69A GB 699269 A GB699269 A GB 699269A GB 1209133 A GB1209133 A GB 1209133A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- transformer
- relay
- coils
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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
- H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
- H05B7/148—Automatic control of power
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Furnace Details (AREA)
- Earth Drilling (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Discharge Heating (AREA)
Abstract
1, 209,133. Automatic control systems for furnaces. ELEKTROKEMISK A/S. Feb. 10, 1969 [Feb. 10, 1968], No. 6992/69. Heading G3R. Electrodes 1, 2, in a smelting furnace are connected in series with each other through the scondary winding of a transformer 3. A balance relay 4 has one coil supplied from current transformer 5, and another coil connected either to the secondary winding of the transformer 3 or to a constant voltage source. Coils H1, H2, are adapted to control movement of the electrodes 1, 2, respectively, the right-hand part of each coil being energized for lowering the associated electrode, whilst the left-hand part is used for raising. A differential relay 9 has voltage coils each connected between its associated electrode and the furnace bottom, this relay transmitting impulses from relay 4 to coils H1, H2, in accordance with the positions of a pair of movable contact arms. If the current detected by the transformer 5 increases, an impulse for raising both electrodes is transmitted to the coils H1, H2, provided that the difference between voltages e1 e2, is within a prescribed limit. If the voltage el is substantially the greater, the impulse is transmitted to the coil H2 only. The system may be applied to a furnace equipped with six electrodes employing three single-phase transformers, or one three-phase transformer, each pair of electrodes being connected in series with one another to a D.C. power supply or a single phase of the A. C. supply. The relay 4 may be replaced by an electronic balance unit. The regulator may transmit pulses to the control circuit intermittently for fixed periods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO0522/68A NO117138B (en) | 1968-02-10 | 1968-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1209133A true GB1209133A (en) | 1970-10-21 |
Family
ID=19877648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6992/69A Expired GB1209133A (en) | 1968-02-10 | 1969-02-10 | Arrangement for automatic control of electrodes in smelting furnaces equipped with an even number of electrodes |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3520978A (en) |
| JP (1) | JPS4827259B1 (en) |
| FR (1) | FR2001708A1 (en) |
| GB (1) | GB1209133A (en) |
| NO (1) | NO117138B (en) |
| YU (1) | YU32802B (en) |
| ZM (1) | ZM869A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732350A (en) * | 1970-12-03 | 1973-05-08 | British Iron Steel Research | Power control |
| DE2456512B2 (en) * | 1974-11-29 | 1978-08-17 | Leybold-Heraeus Gmbh & Co Kg, 5000 Koeln | Arrangement for regulating the immersion depth of consumable electrodes in electroslag remelting furnace |
| IT1157393B (en) * | 1978-10-31 | 1987-02-11 | Centro Speriment Metallurg | SYSTEM FOR THE CONTROL AND REGULATION OF THE ELECTRODES IN THE METAL REFUSING PROCESS UNDER ELECTRO-CONDUCTIVE SLAG |
| US4483008A (en) * | 1982-01-26 | 1984-11-13 | Owens-Corning Fiberglas Corporation | Arc gap controller for glass-melting furnace |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2721948A (en) * | 1953-02-10 | 1955-10-25 | Ohio Ferro Alloys Corp | Automatic voltage and electrode control for electric-arc furnaces |
| US3376374A (en) * | 1964-10-30 | 1968-04-02 | Westinghouse Electric Corp | Polyphase arc furnace with control system to raise one electrode prior to all electrodes striking an arc |
-
1968
- 1968-02-10 NO NO0522/68A patent/NO117138B/no unknown
-
1969
- 1969-02-05 US US796769A patent/US3520978A/en not_active Expired - Lifetime
- 1969-02-05 YU YU0260/69A patent/YU32802B/en unknown
- 1969-02-05 JP JP44008216A patent/JPS4827259B1/ja active Pending
- 1969-02-10 FR FR6903080A patent/FR2001708A1/fr not_active Withdrawn
- 1969-02-10 GB GB6992/69A patent/GB1209133A/en not_active Expired
- 1969-02-10 ZM ZM8/69A patent/ZM869A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2001708A1 (en) | 1969-09-26 |
| US3520978A (en) | 1970-07-21 |
| YU26069A (en) | 1975-02-28 |
| JPS4827259B1 (en) | 1973-08-21 |
| YU32802B (en) | 1975-08-31 |
| NO117138B (en) | 1969-07-07 |
| ZM869A1 (en) | 1969-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |