CN101808437B - Electrode automatic control method for high single-phase electrode power of yellow phosphorus furnace - Google Patents
Electrode automatic control method for high single-phase electrode power of yellow phosphorus furnace Download PDFInfo
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- CN101808437B CN101808437B CN2010101145160A CN201010114516A CN101808437B CN 101808437 B CN101808437 B CN 101808437B CN 2010101145160 A CN2010101145160 A CN 2010101145160A CN 201010114516 A CN201010114516 A CN 201010114516A CN 101808437 B CN101808437 B CN 101808437B
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Abstract
The invention discloses an electrode automatic control method for high single-phase electrode power of a yellow phosphorus furnace. The method is realized in a way that: real-time parameter values of the electrode in the yellow phosphorus furnace are collected and converted into a direct-current voltage analog signal, and the direct-current voltage analog signal is converted into a digital signal by an A/D sampling board, the digital signal is computed by a computer; when the single-phase electrode is in the upper limit position and the power is high, the computer outputs a signal to an elevating mechanism of the adjacent interference phase electrode, so that the adjacent interference phase electrode ascends. The computer is utilized to control the interference phase electrode adjacent to the high power electrode to ascend, thereby reducing the current of the adjacent interference phase electrode and reducing the input power of the adjacent interference phase; and thus, the power of the high power electrode in the upper limit position is driven to decrease as soon as possible, thereby achieving the triphase power balance, enhancing the electric and thermal efficiency, reducing the smelting power consumption, enhancing the yield, and efficiently realizing automatic control on the electrode when the power of the single-phase electrode in the yellow phosphorus furnace is high.
Description
Technical field
The present invention relates to a kind of autocontrol method, especially relate to the higher electrode automatic control method of a kind of yellow phosphorus stove single-phase electrode power.
Background technology
The yellow phosphorus stove belongs to a kind of of the hot stove series in ore deposit, and the product of smelting is a yellow phosphorus, and the core theory that it is smelted is: form directed high temperature ion flow-electric arc through ionized air, convert electric energy to heat energy, for reduction reaction provides sufficiently high temperature field.
The state of electric arc depends on temperature and the resistance characteristic of furnace charge medium around electric conductivity, voltage and the electrode of distance, discharge body of electrode tip and discharge body.In smelting process, along with the continuous rising of furnace bottom bath surface (or top of the slag), furnace charge is regular to be stayed; The motor termination needs the physical location of adjustment electrode in good time because of moving on the scaling loss and the variation of molten bath electric conductivity, and arc power can be in optimum condition all the time in the stove to keep; Also want simultaneously to keep the arc length of three-phase (six phase) electrode arc basic identical, discharge identical arc power, keep the reduction reaction zone of identical size to keep three-phase (six phase) electrode; 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 yellow phosphorus stove smelting process, single-phase electrode occurs through regular meeting and be positioned at upper limit and the higher situation of power, because three-phase power imbalance; Make electricity, the thermal efficiency reduce; Both increase melting electric consumption, also reduced output, be difficult to keep normally carrying out of smelting process.
Existing yellow phosphorus furnace electrode automatic control system can't handle that single-phase electrode is positioned at upper limit and the higher situation of power in the stove, and the operator will transfer manual operation to when running into this situation.Manually operation not only random big, labour intensity is big but also three-phase power imbalance, power consumption are high, yield poorly, ore recovery ratio is low.This also is that numerous yellow phosphorus stoves have been installed automaton and the one of the main reasons that do not drop into actual motion.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art; The invention provides the higher electrode automatic control method of a kind of yellow phosphorus stove single-phase electrode power, when single-phase electrode is positioned at upper limit and power when higher, computing machine outputs signal to the elevating mechanism of the adjacent interference phase electrode of this phase electrode; Make the adjacent interference phase electrode of this phase electrode up; Reduce the electric current of adjacent interference phase electrode, thereby reduce the power input of adjacent interference phase, be positioned at upper limit and the higher electrode power of power descends as early as possible with drive; Reach three-phase power balance, keep normally carrying out of smelting process.
The technical solution adopted for the present invention to solve the technical problems is: the higher electrode automatic control method of a kind of yellow phosphorus stove single-phase electrode power comprises the steps:
The first step; The electrical network three-phase alternating current is elementary through disconnector, vacuum switch access yellow phosphorus furnace transformer; After conversion at the secondary output 80V of transformer three-phase alternating current to 500V; Join through 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, get in the yellow phosphorus stove, electric power is provided;
Second step, the collection of electrode real-time parameter value in the yellow phosphorus stove:
At the elementary or secondary current transformer that is equipped with of transformer, the output AC current signal is transformed to the DC voltage simulating signal through the three-phase alternating current transmitter, offers the A/D sampling plate; Another road three-phase alternating voltage signal is directly taken from the transformer secondary output outlet row, is transformed to the DC voltage simulating signal through the three-phase alternating current pressure transmitter, offers the A/D sampling plate;
In the 3rd step, data-switching: the A/D sampling plate is a digital signal with above-mentioned analog signal conversion, and flows to computing machine;
In the 4th step, computing machine carries out computing:
According to the rate of change size of each phase electrode current, calculate the range deviation size between each phase electrode and the discharge body; When the three-phase electrode free lifting, memory three-phase electrode displacement data separately;
In the 5th step, whether the displacement of any phase electrode of computer judges is positioned at the upper limit of setting: if not, then three-phase electrode all can free ascending, descending, returns for second step; If; Then the electric current to this phase electrode of being positioned at upper limit calculates; And whether the electric current of judging this phase electrode according to result of calculation is greater than the current setting value of this phase electrode: if; Then computing machine outputs signal to the elevating mechanism of the adjacent interference phase electrode of this phase electrode, makes the adjacent interference phase electrode of this phase electrode up, returns for the 4th step.
Compared with prior art, good effect of the present invention is: when certain phase electrode is positioned at upper limit and power when higher, because this upper limit is a mechanical position limitation; Therefore can not force it descending through the elevating mechanism of this phase electrode, thereby can not reduce power through changing this phase electrode, the inventive method outputs signal to the elevating mechanism of the adjacent interference phase electrode that is positioned at the higher electrode of upper limit and power through computing machine; Make adjacent interference phase electrode up, reduce the electric current of adjacent interference phase electrode, thereby reduce the power input of adjacent interference phase; Be positioned at upper limit and the higher electrode power of power descends as early as possible with drive; Reach three-phase power balance, keep normally carrying out of smelting process, reach and improve electricity, the thermal efficiency; Reduce melting electric consumption; Improve the purpose of output, realized that effectively the electrode when single-phase electrode power is higher in the yellow phosphorus stove is controlled automatically, make the interior electrode automatic control system of yellow phosphorus stove obtain realization truly.
Embodiment
Disclosed all characteristics in this instructions, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this instructions (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
The higher electrode automatic control method of a kind of yellow phosphorus stove single-phase electrode power comprises the steps:
The first step; The electrical network three-phase alternating current is elementary through disconnector, vacuum switch access yellow phosphorus furnace transformer; After conversion at the secondary output 80V of transformer three-phase alternating current to 500V; Join through 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, get in the yellow phosphorus stove, electric power is provided;
Second step, the collection of electrode real-time parameter value (electric current and the voltage signal that comprise electrode) in the yellow phosphorus stove:
At the elementary or secondary current transformer that is equipped with of transformer, the ac current signal of output 0-5 ampere is transformed to the DC voltage simulating signal of 0-5V (or 0-10V) through the three-phase alternating current transmitter, offers the A/D sampling plate; Another road three-phase alternating voltage signal is directly taken from the transformer secondary output outlet row, is the 0-500V ac voltage signal, is transformed to 0-5V or 0-10V DC voltage simulating signal through the three-phase alternating current pressure transmitter, offers the A/D sampling plate.
In the 3rd step, data-switching: the A/D sampling plate is six way word signals with above-mentioned six road DC voltage analog signal conversion, and flows to computing machine;
In the 4th step, computing machine carries out computing:
According to the rate of change size of each phase electrode current, calculate the range deviation size between each phase electrode and the discharge body.When the three-phase electrode free lifting, memory three-phase electrode displacement data separately;
In the 5th step, whether the displacement of any phase electrode of computer judges is positioned at the upper limit of setting (upper limit of every phase electrode is input to computing machine through keyboard in advance and stores): if not, then three-phase electrode all can free ascending, descending, returns for second step; If; Then the electric current to this phase electrode of being positioned at upper limit calculates; And whether the electric current of judging this phase electrode according to result of calculation is greater than the current setting value (current setting value of every phase electrode is input in the computing machine through keyboard in advance and stores) of this phase electrode: if; Then computing machine outputs signal to the elevating mechanism of the adjacent interference phase electrode of this phase electrode, makes the adjacent interference phase electrode of this phase electrode up, returns for the 4th step.
If three-phase electrode is difference A phase electrode, a B phase electrode and C electrode mutually, then the adjacent interference phase electrode of A phase electrode is B phase electrode or C phase electrode, and in like manner: the adjacent interference phase electrode of B phase electrode is A phase electrode or C phase electrode; The adjacent interference phase electrode of C phase electrode is B phase electrode or A phase electrode.
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 (1)
1. the higher electrode automatic control method of yellow phosphorus stove single-phase electrode power is characterized in that: comprise the steps:
The first step; The electrical network three-phase alternating current is elementary through disconnector, vacuum switch access yellow phosphorus furnace transformer; After conversion at the secondary output 80V of transformer three-phase alternating current to 500V; Join through 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, get in the yellow phosphorus stove, electric power is provided;
Second step, the collection of electrode real-time parameter value in the yellow phosphorus stove:
At the elementary or secondary current transformer that is equipped with of transformer, the output AC current signal is transformed to the DC voltage simulating signal through the three-phase alternating current transmitter, offers the A/D sampling plate; Another road three-phase alternating voltage signal is directly taken from the transformer secondary output outlet row, is transformed to the DC voltage simulating signal through the three-phase alternating current pressure transmitter, offers the A/D sampling plate;
In the 3rd step, data-switching: the A/D sampling plate is a digital signal with above-mentioned analog signal conversion, and flows to computing machine;
In the 4th step, computing machine carries out computing:
According to the rate of change size of each phase electrode current, calculate the range deviation size between each phase electrode and the discharge body; When the three-phase electrode free lifting, memory three-phase electrode displacement data separately;
In the 5th step, whether any phase electrode of computer judges is positioned at the upper limit of setting: if not, then three-phase electrode all can free ascending, descending, returns for second step; If; Then the electric current to this phase electrode of being positioned at upper limit calculates; And whether the electric current of judging this phase electrode according to result of calculation is greater than the current setting value of this phase electrode: if; Then computing machine outputs signal to the elevating mechanism of the adjacent interference phase electrode of this phase electrode, makes the adjacent interference phase electrode of this phase electrode up, returns for the 4th step.
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| CN101808437B true CN101808437B (en) | 2012-01-11 |
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| CN103092095B (en) * | 2012-12-14 | 2015-04-15 | 成都高威节能科技有限公司 | Control method of submerged arc furnace discharge time intervals |
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| CN201177758Y (en) * | 2008-04-16 | 2009-01-07 | 鞍山宏信电力电源设备有限公司 | Automatic control system for electrically smelted magnesia low-frequency smelting |
| CN101547530A (en) * | 2009-02-26 | 2009-09-30 | 成都晋威科技有限公司 | Method for carrying out effectiveness judgment and processing on electrode clamping of calcium carbide furnace control system |
| CN101572970A (en) * | 2009-02-26 | 2009-11-04 | 成都晋威科技有限公司 | Method for clamping electrodes of automatic electrode control system of calcium carbide furnace |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001004281A (en) * | 1999-06-24 | 2001-01-12 | Fuji Electric Co Ltd | Controller for electrode lifting device for arc furnace |
| JP2005036997A (en) * | 2003-07-16 | 2005-02-10 | Toshiba Corp | Electrode lift control device of arc furnace |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0052091A1 (en) * | 1980-11-11 | 1982-05-19 | ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI (ACEC) Société Anonyme | Protection arrangement against excess arc-currents |
| 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 |
| CN201177762Y (en) * | 2008-04-16 | 2009-01-07 | 鞍山宏信电力电源设备有限公司 | Electrode lift type automatic control system for electrically smelted magnesia low-frequency smelting |
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| CN101547530A (en) * | 2009-02-26 | 2009-09-30 | 成都晋威科技有限公司 | Method for carrying out effectiveness judgment and processing on electrode clamping of calcium carbide furnace control system |
| CN101572970A (en) * | 2009-02-26 | 2009-11-04 | 成都晋威科技有限公司 | Method for clamping electrodes of automatic electrode control system of calcium carbide furnace |
| CN101572969A (en) * | 2009-02-26 | 2009-11-04 | 成都晋威科技有限公司 | Method for automatically balancing electrodes of automatic control system of calcium carbide furnace |
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Effective date of registration: 20201111 Address after: Haimen City, Jiangsu province 226100 Binhai New Area of Nantong port West Road No. 999 Patentee after: HAIMEN HUANGHAI PIONEER PARK SERVICES Co.,Ltd. Address before: High tech Zone Gaopeng road in Chengdu city of Sichuan province 610041 No. 5 A-411 Patentee before: CHENGDU GOVI ENERGY SAVING TECHNOLOGY Co.,Ltd. |