SU748921A1 - Three-phase arc furnace electric duty regulator - Google Patents
Three-phase arc furnace electric duty regulator Download PDFInfo
- Publication number
- SU748921A1 SU748921A1 SU772555909A SU2555909A SU748921A1 SU 748921 A1 SU748921 A1 SU 748921A1 SU 772555909 A SU772555909 A SU 772555909A SU 2555909 A SU2555909 A SU 2555909A SU 748921 A1 SU748921 A1 SU 748921A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- arc furnace
- phase
- phase arc
- furnace electric
- electric duty
- Prior art date
Links
Classifications
-
- 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
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
ii
Изобретение относитс к области электротермии .The invention relates to the field of electrothermal.
Известны регул торы электрического режима трехфазной дуговой электропечи, содержащие в цепи управлени каждой фазы датчики тока и напр жени дуги, соединенные через выпр мители со входами блока сравнени , выход которого св зан с исполнительным механизмом перемещени электрода I и 2.The electric mode regulators of a three-phase electric arc furnace are known that contain current sensors and arc voltage sensors in the control circuit of each phase, connected via rectifiers to the inputs of the comparator unit, the output of which is connected to the actuating mechanism of the electrode I and 2.
Недостатком известных регул торов вл етс то, что они не обеспечивают независимость регулирующих воздействий относительно возмущений в чужих фазах. Например , при эксплуатационных коротких замыкани х из-за св зи между дугами через печное пространство происходит одновременно увеличение тока в фазе, опережающей по направлению вращени векторов, где напр жение на дуге равно нулю, до значени , близкого к току в фазе, где произощло короткое замыкание. Вследствие этого одновременно с электродом фазы , где произощло короткое замыкание, будет перемещатьс электрод невозмущенной фазы, что вызывает отклонение режима в ней от заданного вплоть до обрыва дуги.A disadvantage of the known regulators is that they do not ensure the independence of the regulating actions with respect to disturbances in foreign phases. For example, during operational short circuits, due to the connection between the arcs through the furnace space, an increase in the current in the phase occurs simultaneously, leading in the direction of rotation of the vectors, where the voltage across the arc is zero, to a value close to the current in the phase where the short closure As a result, simultaneously with the electrode of the phase where the short circuit occurred, the electrode of the unperturbed phase will move, which causes a deviation of the mode in it from the given one up to the end of the arc.
Цель изобретени - повышение устой .чивости процесса регулировани за счет автономности регулирующих воздействий фазных каналов регулировани электрического режима дуговой печи относительно возмущений в других фазах.The purpose of the invention is to increase the stability of the adjustment process due to the autonomy of the regulating actions of the phase channels to regulate the electric mode of the arc furnace with respect to disturbances in other phases.
Дл достижени этой цели регул тор снабжен в цепи каждой фазы нуль-органом, двум элементами И-НЕ, реле и источником питани , вход нуль-органа через выпр 10 митель соединен с датчиком напр жени дуги , его выходами вл ютс замыкающие контакты , первый из которых включен между блоком сравнени и исполнительным механизмом перемещени электрода опережающий фазы, его второй замыкающий контакт To achieve this goal, the regulator is supplied in the circuits of each phase with a zero-body, two IS-NOT elements, a relay and a power source, the input of the zero-organ through a rectifier is connected to the arc voltage sensor, its outputs are closing contacts, the first of which is connected between the comparison unit and the actuator of the electrode advance phase, its second closing contact
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772555909A SU748921A1 (en) | 1977-12-19 | 1977-12-19 | Three-phase arc furnace electric duty regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772555909A SU748921A1 (en) | 1977-12-19 | 1977-12-19 | Three-phase arc furnace electric duty regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU748921A1 true SU748921A1 (en) | 1980-07-15 |
Family
ID=20738401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772555909A SU748921A1 (en) | 1977-12-19 | 1977-12-19 | Three-phase arc furnace electric duty regulator |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU748921A1 (en) |
-
1977
- 1977-12-19 SU SU772555909A patent/SU748921A1/en active
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