CN102410827A - System and method for automatically measuring insertion depth of KR stirring head - Google Patents
System and method for automatically measuring insertion depth of KR stirring head Download PDFInfo
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- CN102410827A CN102410827A CN2011102040902A CN201110204090A CN102410827A CN 102410827 A CN102410827 A CN 102410827A CN 2011102040902 A CN2011102040902 A CN 2011102040902A CN 201110204090 A CN201110204090 A CN 201110204090A CN 102410827 A CN102410827 A CN 102410827A
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- stirring
- head
- insertion depth
- stirring head
- weighing device
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- 238000003780 insertion Methods 0.000 title claims abstract description 39
- 230000037431 insertion Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000003756 stirring Methods 0.000 title abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 238000005303 weighing Methods 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 5
- 230000007423 decrease Effects 0.000 claims description 12
- 230000003028 elevating effect Effects 0.000 claims description 10
- 230000035772 mutation Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 7
- 230000023556 desulfurization Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 230000003009 desulfurizing effect Effects 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 1
- 241000876466 Varanus bengalensis Species 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a system and a method for automatically measuring the insertion depth of a KR stirring head. The system comprises a lifting mechanism for driving the stirring head to move in the vertical direction, a weighing device and a displacement sensing device for monitoring the weight and the position of the stirring head in real time respectively in the descending process of the stirring head, and a control unit for receiving and processing the weight signal and the position signal of the stirring head transmitted by the weighing device and the displacement sensing device respectively in real time and controlling the lifting mechanism. The method is based on the basic principle of buoyancy, the height position of the stirring head when the stirring head contacts molten iron liquid is automatically and accurately measured by monitoring the weight change of the stirring head in the descending process, then the insertion depth is given, the stirring head is automatically controlled to descend to a processing height, and the automatic measurement of the insertion depth of the stirring head is realized. The method has the advantages of simple equipment, concise process, low cost and easy realization, and can accurately measure the insertion depth of the KR stirring head and ensure that a good desulfurization effect is realized in the KR stirring process.
Description
Technical field
The present invention be more particularly directed to the system and method for a kind of automatic measurement KR method molten iron pre-desulfurization, belong to the Molten Iron Pretreatment field with the stirring-head insertion depth.
Background technology
As everyone knows, for most steel grades, the element sulphur in the steel is the objectionable impurities element, and this is because the S element in the steel causes " hot-short " easily, influences the performance of steel, therefore needs the S element in the steel to be removed to improve the performance of steel as far as possible.With in the converter stove and the ladle refining furnace desulfurization compare, the outer molten iron pre-desulfurization of stove has many advantages such as efficient height, cost are low, is preferred sulfur removal technology.The widely used molten iron pre-desulfurization technology of modern steel factory mainly contains blowing process and KR paddling process.The two is compared, and the KR paddling process has strong, the low cost and other advantages of dark desulphurizing ability, so become the first-selected sulfur removal technology of producing low-sulfur and super-low sulfur steel grade.
For KR paddling process molten iron pre-desulfurization technology, the factor that influences desulfurized effect is a lot, comprises desulfurizing agent composition, slag skimming process, stirring-head insertion depth, stirring-head rotational speed and mixing time etc.The insertion of stirring-head needs the suitable degree of depth.Consult Fig. 2, the insertion depth of stirring-head has remarkable influence to the desulfurizing iron effect.Insertion depth is improper then can't to obtain good molten iron flox condition, can not give play to the kinetic advantage of KR, thereby can not obtain excellent desulfurizing effect.Therefore, it is most important to guaranteeing good mixing effect accurately to measure the stirring-head insertion depth.
Along with the exploitation and the production of the increasing high-quality steel grade of Jiangsu Sha Gang group, the proportion of production of low-sulfur and super-low sulfur steel grade also increases thereupon.On the basis of comprehensive investigation and assessment, Sha Gang group in Jiangsu has introduced KR molten iron pre-desulfurization technology in grand newly-built steelworks two workshops.The equipment supplier is whether to contact the initial position that the molten iron liquid level is confirmed stirring-head through visual inspection stirring-head end for the measuring method of the KR stirring-head insertion depth that Sha Gang group provides, but in actual production, is difficult to realize.Therefore, the method for seeking high efficient and reliable and measuring KR stirring-head insertion depth automatically becomes the urgent task of guaranteeing the KR desulfurized effect.
Summary of the invention
The objective of the invention is to deficiency, a kind of method and system that can measure KR stirring-head insertion depth automatically are provided, thereby realize accurately measuring the purpose of stirring-head insertion depth, have excellent desulfurizing effect to guarantee the KR paddling process to prior art.
For realizing the foregoing invention purpose, the present invention has adopted following technical scheme:
A kind of system of automatic measurement KR stirring-head insertion depth is characterized in that it comprises:
In order to drive the elevating mechanism of stirring-head in the vertical direction motion;
At least can in stirring-head decline process, monitor the weighing device of stirring-head weight in real time;
At least can in stirring-head decline process, monitor the displacement sensing apparatus of a stirring-head and a reference surface relative position in real time;
And, in order to receiving and to handle respectively stirring-head weight signal and position signalling, and control the control module of said elevating mechanism by said weighing device and displacement sensing apparatus real-time Transmission.
Further, said elevating mechanism comprises the stirring-head lift cart, and the complex root rope is installed on the said lift cart, and this complex root rope lower end connects said stirring-head through at least one weighing device suspension.
Preferably, be symmetrically installed with two wire rope on the said lift cart, each wire rope lower end is connected with stirring-head through a weighing device respectively.
Preferably, said displacement sensing apparatus comprises displacement encoder.
Particularly preferred, said displacement sensing apparatus is installed on the stirring-head lift cart.
Said control module adopts computer system.
A kind of method of automatic measurement KR stirring-head insertion depth, it is to realize through the system of measuring KR stirring-head insertion depth as stated automatically, it is characterized in that this method is:
Driving with elevating mechanism in the stirring-head decline process; Monitor the change in location situation and the weight change situation of stirring-head respectively in real time with displacement sensing apparatus and weighing device; When stirring-head weight was undergone mutation, record stirring-head height this moment was the molten iron liquid level position; Then set the stirring-head insertion depth, and control elevating mechanism drive stirring-head drops to the processing height automatically by control module.
Particularly, the said displacement transducer stirring-head change in location situation of monitoring is meant the height change situation of stirring-head lower surface distance one reference surface.
Principle of work of the present invention is: stirring-head is in the decline process; If do not receive the effect of external force, the weight that weighing device monitored obvious variation can not occur, in the stirring-head decline process; If the stirring-head lower surface touches the molten iron liquid level; Then stirring-head can receive buoyancy function, and at this moment, the weight that weighing device monitored will be undergone mutation.According to this ultimate principle, can think that the stirring-head height when the detected stirring-head weight of weighing device is undergone mutation is the height of molten iron liquid level.Therefore; Write down this stirring-head height constantly of undergoing mutation; Can be automatic accurate height H s during measurement stirring-head contact molten iron liquid level, on the basis of given stirring-head insertion depth D, can realize that by control module stirring-head drops to the function of handling height H e automatic accurately.Meet following relationship: Hs-D=He between the three.According to above-mentioned ultimate principle and disposal route, can realize the function of automatic accurate measurement KR stirring-head insertion depth.
More particularly; The present invention is the elemental height when confirming stirring-head contact molten iron liquid level through the weight change on two wire rope on the lift cart in the monitoring stirring-head decline process; Given then insertion depth; Handle height and the decline of control stirring-head automatically through calculating, thereby realize measuring automatically the purpose of stirring-head insertion depth, have excellent desulfurizing effect to guarantee the KR paddling process.
Present device is simple in structure, easy operating, and technology is simple, and with low cost, in actual production, be easy to realize, can guarantee accurately to measure the insertion depth of KR stirring-head, be particularly useful for the KR hot metal pretreatment technology.
Description of drawings
Fig. 1 is the connection synoptic diagram of device involved in the present invention.
Fig. 2 is the influence synoptic diagram of stirring-head insertion depth to the desulfurizing iron effect.
Fig. 3 is a basic principle schematic of the present invention.
Embodiment
Below in conjunction with an accompanying drawing and a preferred embodiment technical scheme of the present invention is elaborated.
Consult Fig. 1; The system that should measure KR stirring-head insertion depth automatically comprises the stirring-head lift cart 1 that is arranged on the lift cart guide rail 7, and stirring-head 6 is suspended on the lift cart below through two wire rope 3, and also is provided with weighing device 5 between each wire rope lower end and the stirring-head; Simultaneously; Also be provided with displacement transducer 4 on the lift cart, this weighing device is connected with computer system 2 respectively with displacement transducer, and said lift cart is by computer system control.The aforementioned displacements sensor can adopt displacement encoder etc., and aforementioned weighing device can adopt spring balance etc.
Consult Fig. 3, the method for measuring KR stirring-head insertion depth by this system automatically is:
Drive in the stirring-head decline process at lift cart:
A. with the weight on weighing device monitoring in real time and the record wire rope, the i.e. weight of stirring-head;
B. monitor and write down the height of stirring-head lower surface distance reference face in real time with displacement encoder;
C. receive and write down the stirring-head weight and the altitude signal of weighing device and displacement encoder real-time Transmission with computer system, and form the historical trend curve map that can show stirring-head weight and height change trend;
D. write down the stirring-head height constantly of undergoing mutation of the weight on the wire rope in the stirring-head decline process, the height when the stirring-head height of this moment is stirring-head lower surface contact molten iron liquid level is defined as liquid level Hs;
E. by the insertion depth D of staff through the given stirring-head of computer system, on the basis of above-mentioned liquid level Hs, the control lift cart drives stirring-head and continues automatic falling head D to handling height H e, handles height H e=Hs-D;
F. after stirring end; Control lift cart by operating personnel and drive the stirring-head rising; And must guarantee that the stirring-head lower surface leaves the upper edge of ladle fully, prevent that ladle car from moving to and leave that ladle and stirring-head bump in the process under order, wait for processing next time.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the understanding of being familiar with this technology can understand content of the present invention and enforcement according to this; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. system of automatically measuring KR stirring-head insertion depth is characterized in that it comprises:
In order to drive the elevating mechanism of stirring-head in the vertical direction motion;
At least can in stirring-head decline process, monitor the weighing device of stirring-head weight in real time;
At least can in stirring-head decline process, monitor the displacement sensing apparatus of a stirring-head and a reference surface relative position in real time;
And, in order to receiving and to handle respectively stirring-head weight signal and position signalling, and control the control module of said elevating mechanism by said weighing device and displacement sensing apparatus real-time Transmission.
2. the system of automatic measurement KR stirring-head insertion depth according to claim 1; It is characterized in that: said elevating mechanism comprises the stirring-head lift cart; The complex root rope is installed on the said lift cart, and this complex root rope lower end connects said stirring-head through at least one weighing device suspension.
3. the system of automatic measurement KR stirring-head insertion depth according to claim 2 is characterized in that: be symmetrically installed with two wire rope on the said lift cart, each wire rope lower end is connected with stirring-head through a weighing device respectively.
4. the system of automatic measurement KR stirring-head insertion depth according to claim 1, it is characterized in that: said displacement sensing apparatus comprises displacement encoder.
5. the system of automatic measurement KR stirring-head insertion depth according to claim 4, it is characterized in that: said displacement sensing apparatus is installed on the stirring-head lift cart.
6. the system of automatic measurement KR stirring-head insertion depth according to claim 1 is characterized in that: said control module adopts computer system.
7. method of automatically measuring KR stirring-head insertion depth, it is to realize through the system of measuring KR stirring-head insertion depth according to claim 1 automatically, it is characterized in that this method is:
Driving with elevating mechanism in the stirring-head decline process; Monitor the change in location situation and the weight change situation of stirring-head respectively in real time with displacement sensing apparatus and weighing device; When stirring-head weight was undergone mutation, record stirring-head height this moment was the molten iron liquid level position; Then set the stirring-head insertion depth, and control elevating mechanism drive stirring-head drops to the processing height automatically by control module.
8. the method for automatic measurement KR stirring-head insertion depth according to claim 7 is characterized in that: the stirring-head change in location situation that said displacement transducer is monitored is meant the height change situation of stirring-head lower surface distance one reference surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102040902A CN102410827A (en) | 2011-07-21 | 2011-07-21 | System and method for automatically measuring insertion depth of KR stirring head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102040902A CN102410827A (en) | 2011-07-21 | 2011-07-21 | System and method for automatically measuring insertion depth of KR stirring head |
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| CN102410827A true CN102410827A (en) | 2012-04-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642981A (en) * | 2013-12-24 | 2014-03-19 | 辽宁新邦科技有限公司 | Automatic control device for desulfurization of molten iron |
| CN103981334A (en) * | 2014-05-29 | 2014-08-13 | 江苏大峘集团有限公司 | KR (knotted reactor) method steel-making desulfurization molten steel liquid level detection system |
| CN104388623A (en) * | 2014-10-31 | 2015-03-04 | 武汉钢铁(集团)公司 | Molten iron liquid level detection method and device for converter molten iron desulphurization |
| CN106679611A (en) * | 2017-01-23 | 2017-05-17 | 武汉科技大学 | Internal strain measuring device of KR desulphurization stirrer blades |
| CN113215363A (en) * | 2021-04-28 | 2021-08-06 | 武汉钢铁有限公司 | Intelligent blowing and slag removing control system for molten iron desulphurization |
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| CN103981334A (en) * | 2014-05-29 | 2014-08-13 | 江苏大峘集团有限公司 | KR (knotted reactor) method steel-making desulfurization molten steel liquid level detection system |
| CN104388623A (en) * | 2014-10-31 | 2015-03-04 | 武汉钢铁(集团)公司 | Molten iron liquid level detection method and device for converter molten iron desulphurization |
| CN104388623B (en) * | 2014-10-31 | 2016-08-24 | 武汉钢铁(集团)公司 | A kind of molten iron level detection method for converter desulfurizing iron and device |
| CN106679611A (en) * | 2017-01-23 | 2017-05-17 | 武汉科技大学 | Internal strain measuring device of KR desulphurization stirrer blades |
| CN113215363A (en) * | 2021-04-28 | 2021-08-06 | 武汉钢铁有限公司 | Intelligent blowing and slag removing control system for molten iron desulphurization |
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Application publication date: 20120411 |