CN102853794B - Method for detecting length of electrode of arc furnace - Google Patents
Method for detecting length of electrode of arc furnace Download PDFInfo
- Publication number
- CN102853794B CN102853794B CN201210330358.1A CN201210330358A CN102853794B CN 102853794 B CN102853794 B CN 102853794B CN 201210330358 A CN201210330358 A CN 201210330358A CN 102853794 B CN102853794 B CN 102853794B
- Authority
- CN
- China
- Prior art keywords
- electrode
- point
- known set
- calculated
- shell
- 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.)
- Active
Links
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses a method for detecting the length of an electrode of an arc furnace; a force sensor is arranged at the joint of an electrode lifting mechanism and used for detecting electrical signals of stress when the electrode is in quiescent condition, constant rise and constant fall, and for outputting the electrical signals to an A/D sampling plate, so that the electrical signals are converted into digital signals to be output to a computer; and the computer computes the length of the working end of the electrode. The method has the positive benefits that by the adoption of the method, the length value of the working end of the electrode can be detected accurately in real time, an operator can accurately control the work points of the electrode to be on the same horizontal plane, the arc power of the three-phase electrode is kept balanced, the concentration rate of a temperature field in the arc furnace is improved, the natural power coefficient of the arc furnace is improved, the electro-thermal conversion efficiency of the arc furnace is improved, electro-thermal efficiency is improved, power consumption of smelting is reduced, the yield is improved, the roasting condition of a self-roasting electrode can be accurately judged, and soft and hard broken incidence of the electrode can be prevented and reduced.
Description
Technical field
The present invention relates to a kind of detection method of arc furnace electrode length, the detection method of especially a kind of mineral hot furnace (resistor electric arc stove) welding tip length.
Background technology
Mineral hot furnace, the various resistor electric arc stoves such as furnace of calcium carbide, ferro-alloy furnace, Yellow phosphorus furnace are contained, the product of smelting has the products such as calcium carbide, yellow phosphorus, ferrosilicon, ferrochrome, silicomanganese, ferronickel, corundum, ferrotianium, plumbous zinc, the core theory that it is smelted is: form directed high temperature ion current-electric arc by furnace charge current preheating furnace charge, ionization furnace gas, convert electric energy to heat energy, for reduction reaction provides sufficiently high temperature field.
The state of electric arc depends on the temperature around of electric conductivity, voltage and electrode of distance, discharge body of electrode tip and discharge body and the resistance characteristic of furnace charge medium.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, electrode tip is because moving in scaling loss and the variation of molten bath electric conductivity, need to adjust the physical location of electrode in good time, to keep, in stove, arc power all the time can be in optimum condition, also want to keep the arc length of three-phase electrode electric arc basic identical simultaneously, discharge identical arc power to maintain three-phase electrode, keep the reduction reaction region of formed objects, make electric power system can reach higher electrical efficiency simultaneously, reaching one of key of this object is exactly that rise fall of electrodes automatic control system is wanted to carry out accurately measuring judgement to the position of electrode tip, then, could be according to the height of electrode tip position, and then adjust electrode position in good time, the primary heat transport system of pilot arc power two efficient.
In mine heat furnace smelting process, normally rely on the value size of manual observation total current table or voltage table, carry out the lifting of manual control electrode: in the time that electrode total current or voltage are greater than setting, promote electrode, in the time that electrode total current or voltage are less than setting, decline electrode.Indivedual employing PLC are also the methods based on identical with manual control with the method for DCS system control; its major defect is the balance that cannot accurately judge electrode acting point (entering the stove degree of depth) position and three-phase electrode acting point; can only simply simply control according to the size of electrode total current value; randomness that operation is controlled is large, out of true; rise fall of electrodes acts frequently; often can destroy bed structure; have a strong impact on the stable of reaction zone (crucible district), be difficult to meet the requirement of smelting process.Also there will be electrode acting position deviation excessive, cause that bottom temperature is too high, cause the problems such as security threat.Only have accurate judgement electrode acting point position, the point control of three-phase electrode can being done work, at suitable home, could solve the quagmire that mine heat furnace smelting industry exists at present.Up to the present, there is not yet method with practical value, can to compare Measurement accuracy calculating electrodes in mine hot stove working end length.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of detection method of electrodes in mine hot stove length, the welding tip length that has effectively solved the existence of mine heat furnace smelting industry is difficult to the difficult problem accurately obtaining, particularly in the time of improper smelting state, the difficult problem that welding tip length cannot accurately obtain.
The technical solution adopted for the present invention to solve the technical problems is: a kind of detection method of electrodes in mine hot stove length, comprises the steps:
Step 1, in electrode lifting mechanism junction, power sensor is set;
Step 2, power sensor respectively detecting electrode, at the force electrical signal that is subject to of at the uniform velocity propradation and uniform descent state, and are exported to A/D sampling plate by these electric signal, convert digital signal to, then flow to computing machine;
First step 3, computing machine calculate electrode at the uniform velocity the electrode gross mass Wu of propradation and the electrode gross mass Wd of uniform descent state;
Step 4, computing machine are calculated as follows the resistance and the feed cable resistance sum W5 that come out of the stove between interior raw material and electrode:
W5?=?（W?u?-?W?d）/2?；
Step 5, computing machine are calculated as follows out the gross mass Wz of electrode in stationary state:
Wz?=?Wu?–?W5?；
Step 6, computing machine are calculated as follows out welding tip quality W7
W7=Wz-(W1+N2*W2+W3+W4+W5+W6), wherein:
W1 is electrode clamping mechanism quality, is known set-point;
W2 is single-unit electrode shell quality, is known set-point; N2 is electrode shell quantity, obtains by manual measurement;
W3 is pasty electrode quality in electrode shell, is calculated as follows and obtains:
W3=(D/2)
2* Π * L3* ρ 3 wherein: D is electrode diameter, is known set-point; Π is circular constant, and L3 is that in electrode shell, pasty electrode is stuck with paste height, obtains by manual measurement; ρ 3 is pasty electrode density in electrode shell, is known set-point;
Block type electrode quality in W4 electrode shell, is calculated as follows and obtains:
W4=(D/2)
2* Π * L4* ρ 4 wherein: D is electrode diameter, is known set-point; Π is circular constant, and L4 is that in electrode shell, block type electrode is stuck with paste height, obtains by manual measurement; ρ 4 is block type electrode density in electrode shell, is known set-point;
W6 is feedthrough electrode electric device gross mass, is known set-point;
Step 7, be calculated as follows out welding tip length L z:
Lz=W7/((D/2)
2* Π * ρ 1), wherein: ρ 1 is solid electrode density, be known set-point.
Compared with prior art, good effect of the present invention is: by the inventive method can be accurately detecting electrode working end length value in real time, make operator accurately control electrode acting point in same level position, keep three-phase electrode arc power balance, improve temperature field concentration degree in mineral hot furnace, improve mineral hot furnace natural power factor, improve mineral hot furnace electric conversion efficiency, improve electricity, the thermal efficiency thereby reach, reduce melting electric consumption, improve the object of output.Can also accurately judge self-baking electrode roasting situation, prevention and minimizing electrode are soft, the generation of firmly disconnected accident simultaneously.
Embodiment
A detection method for electrodes in mine hot stove length, comprises the steps:
Step 1, in electrode lifting mechanism junction, (oil cylinder junction or pulley installation place) installs power sensor (pressure or pulling force sensor) additional;
Step 2, power sensor respectively detecting electrode, at stressed (pressure or pulling force) electric signal of propradation and uniform descent state at the uniform velocity, and are exported to A/D sampling plate by these electric signal, convert digital signal to, then flow to computing machine;
First step 3, computing machine calculate electrode at the uniform velocity the electrode gross mass Wu of propradation and the electrode gross mass Wd of uniform descent state:
Wu, Wd calculate according to the proportionate relationship between force sensor caliberating range and output electrical signals; For example: force sensor caliberating range is 15000kg, corresponding output electrical signals is DC5V;
If the electrode that power sensor detects is Vu at the force electrical signal that is subject to of propradation at the uniform velocity, electrode is at electrode gross mass Wu=(15000/5) the * Vu of propradation at the uniform velocity, and unit is kg;
In like manner, the electrode that the power sensor of establishing detects is Vd at the force electrical signal that is subject to of uniform descent state, and electrode is at the electrode gross mass Wd=(15000/5) of uniform descent state * Vd, and unit is kg;
Step 4, computing machine are calculated as follows the resistance and the feed cable resistance sum W5 that come out of the stove between interior raw material and electrode:
W5?=?（W?u?-?W?d）/2?；
Step 5, computing machine are calculated as follows out the gross mass Wz of electrode in stationary state:
Wz?=?Wu?–?W5?；
Step 6, computing machine are calculated as follows out welding tip quality W7:
W7=Wz-(W1+N2*W2+W3+W4+W5+W6), wherein:
W1 is electrode clamping mechanism quality, is known set-point;
W2 is single-unit electrode shell quality, is known set-point; N2 is electrode shell quantity, obtains by manual measurement;
W3 is pasty electrode quality in electrode shell, is calculated as follows and obtains:
W3=(D/2)
2* Π * L3* ρ 3 wherein: D is electrode diameter, is known set-point; Π is circular constant, and L3 is that in electrode shell, pasty electrode is stuck with paste height, obtains by manual measurement; ρ 3 is pasty electrode density in electrode shell, is known set-point;
Block type electrode quality in W4 electrode shell, is calculated as follows and obtains:
W4=(D/2)
2* Π * L4* ρ 4 wherein: D is electrode diameter, is known set-point; Π is circular constant, and L4 is that in electrode shell, block type electrode is stuck with paste height, obtains by manual measurement; ρ 4 is block type electrode density in electrode shell, is known set-point;
W6 is feedthrough electrode electric device gross mass, is known set-point;
Step 7, be calculated as follows out welding tip length L z:
Lz=W7/((D/2)
2* Π * ρ 1), wherein: ρ 1 is solid electrode density, be known set-point.
Claims (2)
1. a detection method for electrodes in mine hot stove length, is characterized in that: comprise the steps:
Step 1, in electrode lifting mechanism junction, power sensor is set;
Step 2, power sensor respectively detecting electrode, at the force electrical signal that is subject to of at the uniform velocity propradation and uniform descent state, and are exported to A/D sampling plate, convert digital signal to, then flow to computing machine;
First step 3, computing machine calculate electrode at the uniform velocity the electrode gross mass Wu of propradation and the electrode gross mass Wd of uniform descent state;
Step 4, computing machine are calculated as follows the resistance and the feed cable resistance sum W5 that come out of the stove between interior raw material and electrode:
W5?=?（W?u?-?W?d）/2?；
Step 5, computing machine are calculated as follows out the gross mass Wz of electrode in stationary state:
Wz?=?Wu?–?W5?；
Step 6, computing machine are calculated as follows out welding tip quality W7
W7=Wz-(W1+N2*W2+W3+W4+W5+W6), wherein:
W1 is electrode clamping mechanism quality, is known set-point;
W2 is single-unit electrode shell quality, is known set-point; N2 is electrode shell quantity, obtains by manual measurement;
W3 is pasty electrode quality in electrode shell, is calculated as follows and obtains:
W3=(D/2)
2* Π * L3* ρ 3 wherein: D is electrode diameter, is known set-point; Π is circular constant, and L3 is that in electrode shell, pasty electrode is stuck with paste height, obtains by manual measurement; ρ 3 is pasty electrode density in electrode shell, is known set-point;
Block type electrode quality in W4 electrode shell, is calculated as follows and obtains:
W4=(D/2)
2* Π * L4* ρ 4 wherein: D is electrode diameter, is known set-point; Π is circular constant, and L4 is that in electrode shell, block type electrode is stuck with paste height, obtains by manual measurement; ρ 4 is block type electrode density in electrode shell, is known set-point;
W6 is feedthrough electrode electric device gross mass, is known set-point;
Step 7, be calculated as follows out welding tip length L z:
Lz=W7/((D/2)
2* Π * ρ 1), wherein: ρ 1 is solid electrode density, be known set-point.
2. the detection method of electrodes in mine hot stove length according to claim 1, is characterized in that: described power sensor is pressure transducer or pulling force sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210330358.1A CN102853794B (en) | 2012-09-10 | 2012-09-10 | Method for detecting length of electrode of arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210330358.1A CN102853794B (en) | 2012-09-10 | 2012-09-10 | Method for detecting length of electrode of arc furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102853794A CN102853794A (en) | 2013-01-02 |
| CN102853794B true CN102853794B (en) | 2014-12-10 |
Family
ID=47400599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210330358.1A Active CN102853794B (en) | 2012-09-10 | 2012-09-10 | Method for detecting length of electrode of arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102853794B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115599A (en) * | 2013-01-29 | 2013-05-22 | 成都高威节能科技有限公司 | Method for determining positions of working points of electrode of submerged arc furnace |
| CN103808159B (en) * | 2013-11-08 | 2015-07-08 | 西安交通大学 | Automatic control method used for submerged arc furnace electrode based on high-precision fuzzy control |
| CN104748574A (en) * | 2013-12-27 | 2015-07-01 | 北京思能达节能电气股份有限公司 | System and method for monitoring baking state of self-baking electrode |
| 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 |
| CN108291779A (en) * | 2015-11-05 | 2018-07-17 | 康宁股份有限公司 | Measure the electrode length in melting furnace |
| CN106123768B (en) * | 2016-06-29 | 2018-11-30 | 青岛菲特测控节能科技有限公司 | A kind of electrodes in mine hot stove depth-measuring system |
| CN106658809B (en) * | 2016-12-30 | 2020-06-05 | 中冶南方工程技术有限公司 | Automatic pressure discharge control method for self-baking electrode of submerged arc furnace |
| CN106679555B (en) * | 2017-02-09 | 2023-06-02 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | Submerged arc furnace electrode position measuring device and submerged arc furnace electrode position measuring method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2239295C2 (en) * | 2001-10-29 | 2004-10-27 | Национальный университет "Львивська политэхника" | Power control device for three-phase arc furnace |
| CN101808439A (en) * | 2010-02-26 | 2010-08-18 | 成都高威节能科技有限公司 | Method for automatically controlling electrode with less carbon in calcium carbide furnace |
| CN101868077A (en) * | 2010-05-31 | 2010-10-20 | 长春工业大学 | Non-contact detection and optimum smelting control method for submerged arc furnace electrode |
-
2012
- 2012-09-10 CN CN201210330358.1A patent/CN102853794B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2239295C2 (en) * | 2001-10-29 | 2004-10-27 | Национальный университет "Львивська политэхника" | Power control device for three-phase arc furnace |
| CN101808439A (en) * | 2010-02-26 | 2010-08-18 | 成都高威节能科技有限公司 | Method for automatically controlling electrode with less carbon in calcium carbide furnace |
| CN101868077A (en) * | 2010-05-31 | 2010-10-20 | 长春工业大学 | Non-contact detection and optimum smelting control method for submerged arc furnace electrode |
Non-Patent Citations (5)
| Title |
|---|
| 电弧炉电极调节的研究;郭锐强;《商业现代化》;20120731(第690期) * |
| 电弧炉的反步自适应模糊控制;管萍等;《控制工程》;20120331;第19卷(第2期);第221-224、228页 * |
| 白羽等.矿热炉电极的非接触式在线检测***.《长春工业大学学报（自然科学版）》.2012,第33卷(第4期),第383-386页. * |
| 管萍等.电弧炉的反步自适应模糊控制.《控制工程》.2012,第19卷(第2期),第221-224、228页. * |
| 郭锐强.电弧炉电极调节的研究.《商业现代化》.2012,(第690期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102853794A (en) | 2013-01-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102853794B (en) | Method for detecting length of electrode of arc furnace | |
| CN103115599A (en) | Method for determining positions of working points of electrode of submerged arc furnace | |
| CN101527980B (en) | Electrode batch-type hoisting method of mine soaking furnace electrode automatic control system | |
| CN102111927B (en) | Method and system for controlling electrode of open-type submerged arc ore heat furnace | |
| CN106556249A (en) | A kind of method of electrodes in mine hot stove electric arc adjustment, device and electronic equipment | |
| CN106123768B (en) | A kind of electrodes in mine hot stove depth-measuring system | |
| CN106679555B (en) | Submerged arc furnace electrode position measuring device and submerged arc furnace electrode position measuring method | |
| CN101807054A (en) | Automatic control method for preventing electrode in submerged arc furnace from shocking | |
| CN203537594U (en) | Shell-less self baking electrode system | |
| CN104198011A (en) | Device and method for measuring liquid level of high-temperature melt in metallurgical furnace | |
| CN101572969B (en) | Method for automatically balancing electrodes of automatic control system of calcium carbide furnace | |
| CN203534144U (en) | Vacuum consumable electro-arc furnace control system | |
| CN114205943B (en) | Method and system for controlling electrode insertion depth of submerged arc furnace | |
| CN202339119U (en) | Temperature measuring device for magnesium reduction of zirconium sponge | |
| CN203719425U (en) | Multi-electrode submerged arc furnace | |
| CN104445180B (en) | A kind of continuous production high temperature electric forge furnace | |
| CN103092095B (en) | Control method of submerged arc furnace discharge time intervals | |
| CN102519245B (en) | Measuring and controlling device for roasting quality of self-baking electrode of calcium carbide furnace and method | |
| KR20190131565A (en) | Mitigation of open arc conditions based on measured values | |
| CN103728054B (en) | Method for calculating heat loss of large direct-current closed electric furnace for smelting high-titanium slag | |
| CN106300382A (en) | Control system for In The Sub-mergedfurnace of The Ferroalloys low-voltage compensation apparatus | |
| CN101547530B (en) | Method for carrying out effectiveness judgment and processing on electrode clamping of calcium carbide furnace control system | |
| CN101808437B (en) | Electrode automatic control method for high single-phase electrode power of yellow phosphorus furnace | |
| CN201880886U (en) | Heating device of aluminum liquid flow groove | |
| CN104486859A (en) | Method for automatically tracking liquid level track of melting bath at electrode working points of submerged arc furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210125 Address after: 226600 group 9, Minqiao village, Chengdong Town, Hai'an County, Nantong City, Jiangsu Province Patentee after: NANTONG ZHIHANG ELECTROMECHANICAL TECHNOLOGY 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. |