CN1302124C - Automatic control method for hanging scum plug casting device - Google Patents
Automatic control method for hanging scum plug casting device Download PDFInfo
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- CN1302124C CN1302124C CNB021508844A CN02150884A CN1302124C CN 1302124 C CN1302124 C CN 1302124C CN B021508844 A CNB021508844 A CN B021508844A CN 02150884 A CN02150884 A CN 02150884A CN 1302124 C CN1302124 C CN 1302124C
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- slag
- guide rail
- rail beam
- plug
- pushing
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Abstract
The present invention relates to an auxiliary device for converter steelmaking, particularly to a control method for hung slag plug throwing devices. The control method for hung slag plug throwing devices comprises the stages of plug loading preparation, slag blocking preparation and automatic slag block. The present invention is characterized in that in the stage of automatic slag block, a guide track beam firstly descends, and the descending angle is 7 DEG to 13 DEG; a moving carriage moves forwards; a hanging arm in the slag plug throwing device extends into a converter; the moving carriage stops when arriving at the set position; the guide track beam secondly descends and stops when arriving at the set angle; a clamping device stops working and slag plugs are thrown; the moving carriage moves backwards to a backward position; the guide track beam ascends to the zero position limit; a safety pin is locked; a back door of the converter is closed, and automatic slag block is over. The present invention adopts a programmable controller (PLC) to control the operation, and an operation control panel for man-machine dialogue is arranged on the site, so slag plugs can be accurately positioned and thrown, and the success ratio of blocking slag is high.
Description
Technical field
The present invention relates to the utility appliance that converter steelmaking is used, relate in particular to the control method of suspension type floating plug jettison device.
Technical background
Before converter tapping stops, adopt cantilevered floating plug (rod, boomerang) throwing device to enter and insert tap hole in by fire door floating plug (rod, boomerang), the proportion that utilizes floating plug (rod, boomerang) is lighter than molten steel and overweights the characteristics of slag, and floating plug (rod, boomerang) is floated between the molten steel and slag of tap hole.When steel stream approaches at the end, floating plug (rod, boomerang) sealing tap hole prevents that in-furnace slag from flowing into ladle.Existing floating plug (rod, boomerang) throwing device, the throwing process adopts Artificial Control, throw the location, position and adopt mechanical position limitation, or operate by rule of thumb according to the angle of rotation and the forward travel distance of cantilever by the operative employee, operating process needs two people to cooperate, and wastes time and energy, and efficient is low, the pushing off the slag effect is undesirable, can not adapt to fast pace, STEELMAKING PRODUCTION that continuity is strong.
Summary of the invention
The present invention has overcome existing floating plug and has thrown pushing off the slag and adopt Artificial Control, defective that the pushing off the slag success ratio is lower, a kind of autocontrol method of suspension type floating plug jettison device is provided, this method adopts programmable logic controller (PLC) control, being provided with at the scene can interactive operation control panel, make floating plug accurately locate, throw accurately pushing off the slag success ratio height.
The present invention is achieved in that a kind of autocontrol method of suspension type floating plug jettison device, comprise dress plug preparatory stage, pushing off the slag preparatory stage and automatic pushing off the slag stage, the dress plug preparatory stage comprises that shearing pin opens, guide rail beam descends, guide rail beam is judged fall time, time stops to guide rail beam then, and guide rail beam is the dress floating plug down, and the dress plug is prepared to finish; The pushing off the slag preparatory stage comprises that gripping unit clamps floating plug, and guide rail beam rises, and the zero-bit limit judges, stop to guide rail beam then, and the shearing pin locking, end is prepared in pushing off the slag; It is characterized in that the automatic pushing off the slag stage comprises: shearing pin is opened, explosive door is opened behind the stove, guide rail beam descends for the first time, the decline angle is 7 °～13 °, and travelling car advances, and the cantilever in the floating plug jettison device stretches in the stove, travelling car to desired location is denied, stop to travelling car then, guide rail beam descends for the second time, drops to set angle not, descend to guide rail beam then and to stop, gripping unit discharges, and throws floating plug, then travelling car retreat to after give up the throne, guide rail beam rises to the zero-bit limit, the shearing pin locking, the stove back door is closed, and pushing off the slag finishes automatically.
In the autocontrol method of above-mentioned suspension type floating plug jettison device, described set(ting)value can be adjusted by programmable logic controller and man-machine dialogue operating panel.
Principle of work of the present invention is that the employing convertor lining thickness changes and the angle changing value at converter tapping inclination angle is that mathematical model is set up on the basis, referring to Fig. 4, Fig. 5, promptly
To specific converter and the floating plug of respective design (rod, boomerang) throwing equipment, after the installation site was determined, S cantilever, H0, H1, H2, H3, H absolute altitude, L boomerang, d furnace lining, d stove were also decided with regard to corresponding, are constant constant.
When grate to 90 degree tapping added slag blocking dart (new furnace lining), pushing off the slag cantilever length in the horizontal direction was S, was H in the length of vertical direction:
S=S cantilever+H2+H1=constant
H=(the H absolute altitude-H3)+(d stove-d furnace lining-L boomerang)=constant
In the above-mentioned formula: α is guide rail beam (pushing off the slag cantilever) angle of rotation, and S is flexible to be the cantilever collapsing length, and β is the converter tapping inclination angle, d residual thick be that furnace lining is residual thick.The S cantilever is flexible jib-length, H0 is that gudgeon is to tap hole width between centers, H1 for the tap hole medullary ray to the fire door distance, H2 is that floating plug (boomerang) clamping position is to the fire door distance, H3 is 90 converter medullary ray when spending and podium levels, the H absolute altitude for flexible cantilever to podium level, the L boomerang is that boomerang is long, the d furnace lining is new lining thickness, the d stove for the gudgeon medullary ray to furnace shell inwall distance.
Along with the melting loss of furnace lining, the tap hole medullary ray is occurred level displacement S ' and vertical displacement delta H ', the horizontal shift Δ S of tap hole medullary ray and vertical displacement delta H.In actual production process, S ' is very little for Δ, and (Δ S ' ≈ 0) can ignore.
Δ H ' ≈ d furnace lining-d is residual thick
Therefore turning angle (converter tapping inclination angle) and residual thick definite pushing off the slag cantilever angle of rotation of converter and cantilever collapsing length in the time of can throwing boomerang according to converter.
Automatically determine the angle of rotation and the forward travel distance of floating plug (rod, boomerang) when dropping into by programmable logic controller (PLC) control back, and be provided with interactive operation control panel in operation site, to set(ting)value as: pushing off the slag cantilever angle of rotation and forward travel distance are adjusted, make floating plug accurately locate, throw accurately, improve the success ratio of pushing off the slag, alleviate operator's labour intensity.
Description of drawings
Fig. 1 is the dress skeleton diagram of rod preparatory stage, Fig. 2 is the skeleton diagram of pushing off the slag preparatory stage, Fig. 3 is the skeleton diagram in automatic pushing off the slag stage, Fig. 4 is the mathematical model synoptic diagram of the autocontrol method of suspension type floating plug jettison device of the present invention, the angle mathematical model synoptic diagram that Fig. 5 rotates during for converter tapping.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of autocontrol method of suspension type floating plug jettison device comprises dress plug preparatory stage, pushing off the slag preparatory stage and automatic pushing off the slag stage.Referring to Fig. 1, the dress plug preparatory stage comprises that shearing pin opens, and guide rail beam descends, and guide rail beam judges fall time, and the time stops to guide rail beam then, and guide rail beam is the dress floating plug down, and the dress plug is prepared end.Referring to Fig. 2, the pushing off the slag preparatory stage comprises that gripping unit clamps floating plug, and guide rail beam rises, and the zero-bit limit judges, stop to guide rail beam then, and the shearing pin locking, end is prepared in pushing off the slag.Referring to Fig. 3, the pushing off the slag stage comprises automatically: shearing pin is opened, and explosive door is opened behind the stove, and guide rail beam descends for the first time, and the decline angle is 7 °～13 °, and the decline angle of present embodiment is 10 °.Travelling car advances, pushing off the slag cantilever in the floating plug jettison device stretches in the stove, travelling car to desired location is denied, it is flexible that this position is the length S that cantilever stretches into, stop to travelling car then, guide rail beam descends for the second time, drops to set angle not, and this set angle is cantilever angle of rotation α, descend to guide rail beam then and to stop, gripping unit discharges, and throws floating plug, then travelling car retreat to after give up the throne, guide rail beam rises to zero limit, the shearing pin locking, the stove back door is closed, and pushing off the slag finishes automatically.The length S that set(ting)value such as cantilever stretch into is flexible, cantilever angle of rotation α can pass through programmable logic controller (PLC) and the man-machine dialogue operating panel is adjusted.The tapping inclination angle of converter can send signal to programmable logic controller by autosynchromotor, and convertor lining thickness can record by laser thickness gauge.
The results showed that adopt the autocontrol method of suspension type floating plug jettison device, the pushing off the slag success ratio reaches more than 90%, simultaneously, has also alleviated operator's labour intensity greatly.
The autocontrol method of suspension type floating plug jettison device of the present invention can be applicable to the jettison device of various forms of slag-blocking balls, plug, rod, boomerang.
Claims (2)
1. the autocontrol method of a suspension type floating plug jettison device, comprise dress plug preparatory stage, pushing off the slag preparatory stage and automatic pushing off the slag stage, the dress plug preparatory stage comprises that shearing pin opens, guide rail beam descends, guide rail beam is judged fall time, time stops to guide rail beam then, and guide rail beam is the dress floating plug down, and the dress plug is prepared to finish; The pushing off the slag preparatory stage comprises that gripping unit clamps floating plug, and guide rail beam rises, and the zero-bit limit judges, stop to guide rail beam then, and the shearing pin locking, end is prepared in pushing off the slag; It is characterized in that the automatic pushing off the slag stage comprises: shearing pin is opened, explosive door is opened behind the stove, guide rail beam descends for the first time, the decline angle is 7 °～13 °, and travelling car advances, and the cantilever in the floating plug jettison device stretches in the stove, travelling car to desired location is denied, stop to travelling car then, guide rail beam descends for the second time, drops to set angle not, descend to guide rail beam then and to stop, gripping unit discharges, and throws floating plug, then travelling car retreat to after give up the throne, guide rail beam rises to the zero-bit limit, the shearing pin locking, the stove back door is closed, and pushing off the slag finishes automatically.
2. the autocontrol method of suspension type floating plug jettison device according to claim 1 is characterized in that set(ting)value can be by programmable logic controller and the adjustment of man-machine dialogue operating panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021508844A CN1302124C (en) | 2002-11-28 | 2002-11-28 | Automatic control method for hanging scum plug casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021508844A CN1302124C (en) | 2002-11-28 | 2002-11-28 | Automatic control method for hanging scum plug casting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1504583A CN1504583A (en) | 2004-06-16 |
| CN1302124C true CN1302124C (en) | 2007-02-28 |
Family
ID=34234140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021508844A Expired - Fee Related CN1302124C (en) | 2002-11-28 | 2002-11-28 | Automatic control method for hanging scum plug casting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1302124C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676731B (en) * | 2012-05-18 | 2014-04-16 | 中冶华天工程技术有限公司 | Suspension type skimbar putting device |
| CN103695592B (en) * | 2013-12-20 | 2015-07-15 | 鞍钢股份有限公司 | Method for positioning slag stopping plug |
| CN110093475A (en) * | 2019-04-24 | 2019-08-06 | 芜湖新兴铸管有限责任公司 | Furnace rear slag stopping vehicle automatic control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4431169A (en) * | 1980-07-05 | 1984-02-14 | Nisshin Steel Co., Ltd. | Method and apparatus for preventing the inclusion of slag into the molten steel tapped from a converter |
| JPS62227026A (en) * | 1986-03-28 | 1987-10-06 | Nisshin Steel Co Ltd | Method for preventing axial misalignment of slag stopper for closing tap hole of converter |
| CN2397125Y (en) * | 1999-11-10 | 2000-09-20 | 武汉钢铁设计研究院 | Hanging scum rod inserting device |
-
2002
- 2002-11-28 CN CNB021508844A patent/CN1302124C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4431169A (en) * | 1980-07-05 | 1984-02-14 | Nisshin Steel Co., Ltd. | Method and apparatus for preventing the inclusion of slag into the molten steel tapped from a converter |
| JPS62227026A (en) * | 1986-03-28 | 1987-10-06 | Nisshin Steel Co Ltd | Method for preventing axial misalignment of slag stopper for closing tap hole of converter |
| CN2397125Y (en) * | 1999-11-10 | 2000-09-20 | 武汉钢铁设计研究院 | Hanging scum rod inserting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1504583A (en) | 2004-06-16 |
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Granted publication date: 20070228 Termination date: 20161128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |