CN101527980B - Electrode batch-type hoisting method of mine soaking furnace electrode automatic control system - Google Patents
Electrode batch-type hoisting method of mine soaking furnace electrode automatic control system Download PDFInfo
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- CN101527980B CN101527980B CN2009103016636A CN200910301663A CN101527980B CN 101527980 B CN101527980 B CN 101527980B CN 2009103016636 A CN2009103016636 A CN 2009103016636A CN 200910301663 A CN200910301663 A CN 200910301663A CN 101527980 B CN101527980 B CN 101527980B
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- 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
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Abstract
The invention discloses an electrode batch-type hoisting method of a mine soaking furnace electrode automatic control system which comprises the following steps: permissible value and pause duration of a single hoisting displacement of an electrode is determined according to furnace charge condition and smelting process; when absolute value of hoisting displacement of the electrode is more than or equal to the permissible value, the electrode stops hoisting and continues to hoist after a while; the process is repeated until the electrode is hoisted to the scope in line with required value of smelting; the positive effect of the invention is; multiple hoisting is carried out according to calculation of hoisting distance of the electrode at each time by a computer, thus eliminating difference value between actual current value and set current value and avoiding deflexion and vibration of the electrode caused by overlarge hoisting distance of the electrode at a single time; as a result, the purpose of improving electric and thermal efficiency, reducing smelting power consumption and improving production is achieved.
Description
Technical field
The present invention relates to a kind of method of electrode batch-type hoisting, especially a kind of method of electrodes in mine hot stove batch-type hoisting.
Background technology
The hot stove in ore deposit, belong to a kind of of arc furnace series, the product of smelting is ferrosilicon class, silicomangan, ferroalloy, yellow phosphorus, calcium carbide, corundum etc., the core theory that it is smelted is: form directed high temperature ion flow electric arc by ionized air, convert electric energy to heat energy, for reduction reaction provides sufficiently high temperature field.
The state of electric arc depends on the temperature around conductivity, voltage and the electrode of distance, discharge body of electrode tip and discharge body and the resistance characteristic of furnace charge medium.In smelting process, continuous rising along with furnace bottom bath surface (or top of the slag), furnace charge is regular to be stayed, electrode tip is because of moving on the scaling loss and the variation of molten bath conductivity, need to adjust the physical location of electrode in good time, arc power can be in optimum state all the time in the stove to keep, also want simultaneously to keep the arc length of three-phase (six phases) electrode arc basic identical, discharge identical arc power to keep three-phase (six phases) electrode, the reduction reaction zone that keeps identical size, the higher electrical efficiency that electric power system can be reached, one of key that reaches this purpose is exactly that the rise fall of electrodes automatic control system is wanted and can accurately be measured judgement to the position of electrode tip, then, and could be according to the height of electrode tip position, and then adjust electrode position, the primary heat transport system of pilot arc power two efficient in good time.
In the mine heat furnace smelting process, normally rely on the value size of manual observation ammeter or voltmeter, come the lifting of manual control electrode: when curtage during, promote electrode greater than setting, when curtage during less than setting, the decline electrode.Indivedual methods of PLC control that adopt also are based on the method identical with Artificial Control, its major defect is that manually-operated randomness is big, inaccuracy, it is excessive electrode single lifting distance often to occur, cause the deflection or the concussion of electrode, thereby it is excessive and cause the production accident of electrode fracture smelting process fluctuation to occur.Up to the present, do not see the generation that effective rise fall of electrodes autocontrol method can be avoided the electrode fracture accident as yet.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides the method for the automatic batch-type hoisting of a kind of electrode, excessive and the electrode deflection or the concussion that cause of single lifting distance when having avoided artificial lifting electrode effectively.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method of mine soaking furnace electrode automatic control system electrode batch-type hoisting, according to furnace charge situation and smelting process, determine the permissible value and the time out of electrode single lifting displacement, when the absolute value of rise fall of electrodes displacement during more than or equal to permissible value, electrode suspends lifting, continue lifting after a period of time again, so repeatedly, up to rise fall of electrodes in the scope that meets the smelting requirements value.
The concrete computational methods of the present invention are as follows:
If the displacement of A, B, C three-phase electrode is respectively HHA, HHB, HHC, single operation permissible value is THT, and time out is Δ T, and the current value of A, B, C three-phase electrode is difference I
A, I
B, I
C, the smelting set point of three-phase electrode is I
1, the dead band current value is I
2,
When rise fall of electrodes, measure the value of HHA, HHB, HHC, and judge whether to satisfy following condition:
A, when | HHA| 〉=THT, after A phase electrode suspends Δ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
A≤ (I
1+ I
2) till;
B, when | HHB| 〉=THT, after B phase electrode suspends Δ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
B≤ (I
1+ I
2) till;
C, when | HHC| 〉=THT, after C phase electrode suspends Δ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
C≤ (I
1+ I
2) till.
Good effect of the present invention is: by computer the distance of the each lifting of electrode is calculated, lifting several times, eliminated the difference of actual current and setting current value, lifting distance of electrode excessive and the electrode deflection or the concussion that cause have been avoided, improve electricity, the heat efficiency thereby reach, reduce melting electric consumption, improve the purpose of output.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing.
Fig. 1 is a control circuit block diagram of the present invention.
Among the figure: GK-isolating switch, ZK-vacuum switch, B-transformer, L-current transformer, M-motor, LCD-display screen, J-relay.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Fig. 1 is a control circuit block diagram of the present invention, it is elementary that electrical network 110KV (35KV) three-phase alternating current inserts ore heat furnace transformer B through isolating switch GK, vacuum switch ZK, after conversion at the secondary output 80V of transformer B three-phase alternating current to 500V, join by the short net in the heavy in section of forming by heavy in section copper pipe or copper coin, soft copper cable, electric installation and graphite electrode, enter in the stove, electrical power is provided.
At the elementary or secondary current transformer L that is equipped with of transformer B, the ac current signal of output 0-5 ampere is transformed to the direct voltage analog signal of 0-5V (or 0-10V) through signal converter, offers the A/D sampling plate; Another road three-phase alternating voltage signal is directly taken from B level of the transformer outlet row, is the 0-500V ac voltage signal, is transformed to 0-5V or 0-10V direct voltage analog signal through signal converter, offers the A/D sampling plate; The A/D sampling plate is that six way word signals are for Computing with above-mentioned six road direct voltage analog signal conversion; Simultaneously, ten four road or 20 road hand control switch signals, the spacing control switch signal of Shi Erlu insert computer by the I/O input/output board and carry out computing, after machine is handled as calculated, output signal to motor driven systems or fluid power system, thereby realize that motor driven systems or fluid power system drive the upper and lower motion of electrode lifting mechanism drive electrode, thereby change the size of electrical power in the stove; The set point of control signal is input to the calculator memory storage by keyboard.
Design principle of the present invention is: according to furnace charge situation and smelting process, determine the permissible value and the time out of electrode single lifting displacement, when the absolute value of rise fall of electrodes displacement during more than or equal to permissible value, electrode suspends lifting, continue lifting after a period of time again, so repeatedly, up to rise fall of electrodes in the scope that meets the smelting requirements value.
The concrete computational methods of the present invention are as follows:
If the displacement of A, B, C three-phase electrode is respectively HHA, HHB, HHC, single operation permissible value is THT, and time out is Δ T, and the current value of A, B, C three-phase electrode is difference I
A, I
B, I
C, the smelting set point of three-phase electrode is I
1, the dead band current value is I
2,
When rise fall of electrodes, measure the value of HHA, HHB, HHC, and judge whether to satisfy following condition:
A, when | HHA| 〉=THT, after A phase electrode suspends Δ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
A≤ (I
1+ I
2) till;
B, when | HHB| 〉=THT, after B phase electrode suspends Δ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
B≤ (I
1+ I
2) till;
C, when | HHC| 〉=THT, after C phase electrode suspends Δ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
C≤ (I
1+ I
2) till.
When the present invention was applied in the yellow phosphorus stove, transformer efficiency 20000KVA, primary side voltage 110KV, secondary side current 13800A, current transformer changed 20000/5,600 millimeters of electrode diameters; The systematic sampling signal: secondary side six phase currents (taking from current transformer), secondary side voltage signal (directly obtaining from transformer outlet row), secondary side be phase voltage 250V, THT=80 (mm), Δ T=10S, I over the ground
1=18000A, I
2=1260A.
When the present invention was applied in the furnace of calcium carbide, transformer efficiency 20000KVA, primary side voltage 110KV, secondary side current 13800A, current transformer changed 20000/5,600 millimeters of electrode diameters; The systematic sampling signal: secondary side six phase currents (taking from current transformer), secondary side voltage signal (directly obtaining from transformer outlet row), secondary side be phase voltage 250V, THT=80 (mm), Δ T=10S, I over the ground
1=18000A, I
2=1260A.
When the present invention was applied in the ferro-alloy furnace, transformer efficiency 20000KVA, primary side voltage 110KV, secondary side current 13800A, current transformer changed 20000/5,600 millimeters of electrode diameters; The systematic sampling signal: secondary side six phase currents (taking from current transformer), secondary side voltage signal (directly obtaining from transformer outlet row), secondary side be phase voltage 250V, THT=80 (mm), Δ T=10S, I over the ground
1=18000A, I
2=1260A.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (4)
1. the method for a mine soaking furnace electrode automatic control system electrode batch-type hoisting, it is characterized in that: according to furnace charge situation and smelting process, determine the permissible value and the time out of electrode single lifting displacement, when the absolute value of rise fall of electrodes displacement during more than or equal to permissible value, electrode suspends lifting, continue lifting after a period of time again, up to rise fall of electrodes in the scope that meets the smelting requirements value:
If the displacement of A, B, C three-phase electrode is respectively HHA, HHB, HHC, single operation permissible value is THT, time out Wei ⊿ T, and the current value of A, B, C three-phase electrode is respectively I
A, I
B, I
C, the smelting set point of three-phase electrode is I
1, the dead band current value is I
2,
When rise fall of electrodes, measure the value of HHA, HHB, HHC, and judge whether to satisfy following condition:
A, when ︳ HHA ︳ 〉=THT, behind the A phase electrode Zan Ting ⊿ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
A≤ (I
1+ I
2) till;
B, when ︳ HHB ︳ 〉=THT, behind the B phase electrode Zan Ting ⊿ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
B≤ (I
1+ I
2) till;
C, when ︳ HHC ︳ 〉=THT, behind the C phase electrode Zan Ting ⊿ T, continue the lifting operation, up to satisfied (I
1-I
2)≤I
C≤ (I
1+ I
2) till.
2. the method for mine soaking furnace electrode automatic control system electrode batch-type hoisting according to claim 1 is characterized in that: the hot stove in described ore deposit is the yellow phosphorus stove.
3. the method for mine soaking furnace electrode automatic control system electrode batch-type hoisting according to claim 1 is characterized in that: the hot stove in described ore deposit is a furnace of calcium carbide.
4. the method for mine soaking furnace electrode automatic control system electrode batch-type hoisting according to claim 1 is characterized in that: the hot stove in described ore deposit is a ferro-alloy furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103016636A CN101527980B (en) | 2009-04-20 | 2009-04-20 | Electrode batch-type hoisting method of mine soaking furnace electrode automatic control system |
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|---|---|---|---|
| CN2009103016636A CN101527980B (en) | 2009-04-20 | 2009-04-20 | Electrode batch-type hoisting method of mine soaking furnace electrode automatic control system |
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|---|---|
| CN101527980A CN101527980A (en) | 2009-09-09 |
| CN101527980B true CN101527980B (en) | 2011-04-13 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101720146B (en) * | 2009-12-15 | 2013-08-07 | 中冶东方工程技术有限公司 | Control method of embedding depth of electrode into ore-smelting electric furnace |
| CN101807054A (en) * | 2010-02-26 | 2010-08-18 | 成都高威节能科技有限公司 | Automatic control method for preventing electrode in submerged arc furnace from shocking |
| CN102331193B (en) * | 2011-09-22 | 2013-10-23 | 云南文山斗南锰业股份有限公司 | System and method for controlling electrode of ore-smelting electric furnace |
| CN103602823B (en) * | 2013-12-05 | 2017-04-05 | 湖南力方轧辊有限公司 | The electro-slag re-melting method and electroslag furnace of consutrodes |
| CN104486859B (en) * | 2014-12-19 | 2016-02-03 | 成都高威节能科技有限公司 | Electrodes in mine hot stove acting point is from the method for motion tracking bath surface track |
| CN106500514B (en) * | 2016-10-19 | 2019-03-12 | 嘉峪关宏电铁合金有限责任公司 | A method of preventing electrodes in mine hot stove deflection |
| CN114659373B (en) * | 2022-03-22 | 2023-08-01 | 宁夏昌茂祥冶炼有限公司 | Submerged arc furnace system with automatic lifting electrode and control method thereof |
| CN116499273A (en) * | 2023-06-25 | 2023-07-28 | 成都星云智联科技有限公司 | Real-time control method and control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5573573A (en) * | 1991-11-18 | 1996-11-12 | Voest-Alpine Industrieanlagenbau Gmbh | Electric arc furnace arrangement for producing steel |
| CN1818102A (en) * | 2006-03-07 | 2006-08-16 | 东北大学 | Continuouslly-casting electroslag furnace |
| CN1873564A (en) * | 2006-06-15 | 2006-12-06 | 韶关市义太机电设备有限公司 | Method for aotomatic controlling rise fall of electrodes in mine hot stove |
-
2009
- 2009-04-20 CN CN2009103016636A patent/CN101527980B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5573573A (en) * | 1991-11-18 | 1996-11-12 | Voest-Alpine Industrieanlagenbau Gmbh | Electric arc furnace arrangement for producing steel |
| CN1818102A (en) * | 2006-03-07 | 2006-08-16 | 东北大学 | Continuouslly-casting electroslag furnace |
| CN1873564A (en) * | 2006-06-15 | 2006-12-06 | 韶关市义太机电设备有限公司 | Method for aotomatic controlling rise fall of electrodes in mine hot stove |
Non-Patent Citations (4)
| Title |
|---|
| JP特开2006-170533A 2006.06.29 |
| 张向华 等.电炉整流及电极升降控制***的研究.《自动化仪表》.2005,第26卷(第12期),第46-47页. |
| 张向华等.电炉整流及电极升降控制***的研究.《自动化仪表》.2005,第26卷(第12期),第46-47页. * |
| 陈万春,白红刚.PLC在电炉电极自动升降控制中的应用.《一重技术》.2006,(第3期),第68-69页. * |
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