SU120275A1 - Method for automatic control of multi-phase electric arc furnaces - Google Patents

Method for automatic control of multi-phase electric arc furnaces

Info

Publication number
SU120275A1
SU120275A1 SU608215A SU608215A SU120275A1 SU 120275 A1 SU120275 A1 SU 120275A1 SU 608215 A SU608215 A SU 608215A SU 608215 A SU608215 A SU 608215A SU 120275 A1 SU120275 A1 SU 120275A1
Authority
SU
USSR - Soviet Union
Prior art keywords
electric arc
automatic control
phase electric
arc furnaces
current
Prior art date
Application number
SU608215A
Other languages
Russian (ru)
Inventor
Н.А. Васильченко
Original Assignee
Н.А. Васильченко
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Н.А. Васильченко filed Critical Н.А. Васильченко
Priority to SU608215A priority Critical patent/SU120275A1/en
Application granted granted Critical
Publication of SU120275A1 publication Critical patent/SU120275A1/en

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  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Description

Дл  автоматического регулировани  многофазных электрических дуговых печей примен ютс  способы, основанные на управлении исполнительными органами с помощью сигналов, соответствующих току нагрузки и фазному напр жению цепи питани  печи.For the automatic regulation of multiphase electric arc furnaces, methods are used based on controlling the actuators using signals corresponding to the load current and phase voltage of the furnace power supply circuit.

Предлагаемый способ отличаетс  от известных тем, что в сигнал регулировани  ввод т дополнительно составл ющую, пропорциональную току в нулевом проводе, соедин ющем нулевые точки печи и печного трансформатора.The proposed method differs from the known ones in that an additional component, proportional to the current in the neutral wire connecting the zero points of the furnace and the furnace transformer, is introduced into the control signal.

Применение такого способа регулировани  позвол ет сохранить .неподвижность электродов невозмущенных фаз при нарушении установленного электрического режима в какой-либо фазе.The use of this method of adjustment allows one to maintain the immobility of the electrodes of the unperturbed phases in the event of a violation of the established electrical mode in any phase.

На чертеже изображена принципиальна  схема устройства дл  .автоматического регулировани  дуговой электропечи по предлагаемому способу.The drawing shows a schematic diagram of a device for automatic control of an electric arc furnace according to the proposed method.

Исполнительные органы, осуществл ющие изменение положени , электродов печи /, управл ютс  сигналами, соответствующими току нагрузки и фазному напр жению цепи питани  электродов. Сигналы, завис щие от тока нагрузки, подаютс  от трансформаторов 2 тока, включенных в цепь питани  электродов через выпр мители 5. Сигналы, завис щие от фазовых напр жений, подаютс  через добавочные сопротивлени  4 и выпр мители 5.The actuators that change the position of the furnace electrodes / are controlled by signals corresponding to the load current and phase voltage of the power supply circuit of the electrodes. The signals depending on the load current are supplied from the current transformers 2 connected to the electrode supply circuit via the rectifiers 5. The signals depending on the phase voltages are fed through the additional resistances 4 and the rectifiers 5.

В сигнал регулировани  ввод т дополнительную составл ю .щую, пропорциональную току в нулевом проводе 6, соедин ющем нулевые точки печи / и печного трансформатора 7.An additional component is introduced into the control signal, proportional to the current in the neutral conductor 6, which connects the zero points of the furnace / and the furnace transformer 7.

Эта составл юща  беретс  от трансформаторов тока 8, включенных в цепь нулевого провода, которые присоедин ютс  параллельно трансформаторам 2 тока. В результате на исполнительные органы подаютс  сигналы, получаемые путем геометрического сложени  сигналов, пропорциональных току в электроде и току в нулевом проводе.This component is taken from the current transformers 8 connected to the neutral conductor circuit, which are connected in parallel to the current transformers 2. As a result, signals are obtained to the executive bodies, which are obtained by geometrically adding signals that are proportional to the current in the electrode and the current in the neutral wire.

Если, например, в первой фазе произойдет обрыв дуги, то ток, поступающий от трансформаторов 8, резко уменьшает регулирующий сигнал , подаваемый на регул тор третьей фазы, почти не измен ет сигнал, подаваемый на регул тор второй фазы и резко увеличивает сигнал, возIf, for example, in the first phase an arc is broken, the current supplied from the transformers 8 sharply reduces the regulating signal applied to the third phase regulator, almost does not change the signal applied to the second phase regulator and increases the signal

SU608215A 1958-09-22 1958-09-22 Method for automatic control of multi-phase electric arc furnaces SU120275A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU608215A SU120275A1 (en) 1958-09-22 1958-09-22 Method for automatic control of multi-phase electric arc furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU608215A SU120275A1 (en) 1958-09-22 1958-09-22 Method for automatic control of multi-phase electric arc furnaces

Publications (1)

Publication Number Publication Date
SU120275A1 true SU120275A1 (en) 1958-11-30

Family

ID=48392164

Family Applications (1)

Application Number Title Priority Date Filing Date
SU608215A SU120275A1 (en) 1958-09-22 1958-09-22 Method for automatic control of multi-phase electric arc furnaces

Country Status (1)

Country Link
SU (1) SU120275A1 (en)

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