CN103363925B - Projection slab caster conicity instrument - Google Patents
Projection slab caster conicity instrument Download PDFInfo
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- CN103363925B CN103363925B CN201210083833.XA CN201210083833A CN103363925B CN 103363925 B CN103363925 B CN 103363925B CN 201210083833 A CN201210083833 A CN 201210083833A CN 103363925 B CN103363925 B CN 103363925B
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Abstract
Projection slab caster conicity instrument, composition comprises: support, the inner side of pedestal lower end arranges end cap, horizon light generator is hung in end cap, the outside of pedestal lower end is hinged with a photoelectricity dolly, during measurement, photoelectricity dolly top board is parallel with crystallizer leptoprosopy, imageing sensor is provided with in photoelectricity dolly, angle is there is between the light-sensitive surface of imageing sensor and the little roof panels of photoelectricity, the light that horizon light generator is launched shines to photoelectricity dolly, pedestal lower end offers light hole, top board longitudinally offers transmissive slit, the light that horizon light generator is launched is through described light hole, transmissive slit is projected on imageing sensor light-sensitive surface.The principle of the invention is reliable, structure is simple, measurement is accurate, volume is little, lightweight, with low cost; Easy to use, for ease of maintenaince.It uses ripe ccd image sensor to replace high precision dip sensor, utilizes the same slit principle that projected length is different when different angle, indirectly obtains inclination angle by measuring slit projected length.
Description
Technical field
The present invention relates to a kind of projection slab caster conicity instrument, be applicable to quick, the Measurement accuracy of slab caster mould tapering, belong to metallurgical special measurement instrument technical field.
Background technology
Slab caster mould is cut open along steel flow path direction, and its section is a up big and down small isosceles trapezoid shape (as shown in Figure 1).Molten steel injects crystallizer from top, by below is pulled continuously out after also progressively solidifying wherein by water cooling.If crystallizer suitable for reading wide be A, end opening is wide is B, and height is h, and the angle of leptoprosopy and vertical direction is α (being generally less than 0.5 °).Then tapering computing formula is:
(formula 1).Easily draw:
(formula 2).When the wide B of end opening is known, as long as record leptoprosopy inclination alpha just can calculate taper value Taper.
In modernization smelter, slab caster mould tapering Taper value is an important technological equipment parameter needing often to measure.It is accurate to only have this state modulator, can guarantee Surface Quality of Steel Billet, stop the generation of the industrial accidents such as stagnant base or bleed-out.
Conical degree of crystallizer measuring method common at present adopts obliquity sensor to record inclination alpha.Obliquity sensor obtains inclination alpha by the angle between acceleration measurement sensitive axis of sensor and gravity sensitive axis.Obliquity sensor has the advantages that volume is little, integrated level is high, and purposes widely; But still there are following 2 deficiencies:
One, positive and negative taper angle cannot be differentiated.If the leptoprosopy taper angle direction of certain side is anti-loaded (now crystallizer section parallelogram shape), this sensor also cannot find;
Two, sensitive element wherein easily damages and is difficult to maintenance.
Summary of the invention
Technical matters to be solved by this invention is, overcome in prior art and cannot distinguish positive and negative taper angle and easily damage and be difficult to the shortcoming of maintenance, a kind of projection slab caster conicity instrument is provided, it has can differentiate positive and negative tapering, and structure is simple, lightweight, easy to use and be convenient to the features such as maintenance.
In order to solve above technical matters, projection slab caster conicity instrument provided by the invention, it is characterized in that composition comprises: support, the inner side of pedestal lower end arranges end cap, horizon light generator is hung in end cap, the outside of pedestal lower end is hinged with a photoelectricity dolly, imageing sensor is provided with in described photoelectricity dolly, angle β is there is between the light-sensitive surface of described imageing sensor and the little roof panels of photoelectricity, pedestal lower end offers light hole, the top board of photoelectricity dolly longitudinally offers transmissive slit, the horizontal light that described horizon light generator is launched is through described light hole, transmissive slit is projected on imageing sensor light-sensitive surface, when described photoelectricity dolly fully contacts with crystallizer leptoprosopy, the top board of photoelectricity dolly is parallel with crystallizer leptoprosopy.
Measuring principle of the present invention is as follows: suppose that the length of transmissive slit is l, in same vertical plane, a length is irradiated for l with a branch of horizon light, inclination angle is the slit AB of α, be one piece of ccd image sensor that β angle is placed with slit after horizon light impinges upon slit through slit, then ccd image sensor be illuminated the length of part AB'
(formula 3).Because l length and β angle are determined during fabrication, so according to formula 3 and method of interpolation, can list in measured scope and (generally be no more than
) table of comparisons of α angle (or tan α value) and the projected length l' value of slit on CCD, i.e. " α (or tan α)-l' " table of comparisons.When looking into this table of comparisons after the actual l' of recording, namely obtain corresponding α (or tan α) value; Recycle the wide B value of end opening recorded by additive method, just obtain the tapering Taper value that will survey according to (formula 2).
Visible, when utilizing projection slab caster conicity instrument of the present invention to measure slab caster tapering, only need to obtain the fiber lengths that ccd image sensor is illuminated, and in conjunction with crystallizer end opening width value, namely measure slab caster tapering by calculating.
The principle of the invention is reliable, structure is simple, measurement is accurate, volume is little, lightweight, with low cost; Easy to use, for ease of maintenaince.It uses ripe ccd image sensor to replace high precision dip sensor, utilizes the same slit principle that projected length is different when different angle, indirectly obtains inclination angle by measuring slit projected length, and distinguish positive and negative taper angle.
Further, the rotating shaft of described photoelectricity dolly and pedestal lower end hinged place is horizontally disposed with, and parallel with crystallizer leptoprosopy.Enable photoelectricity dolly vertical rotation within the specific limits, thus realize fully contacting with the leptoprosopy of crystallizer.And the bottom of described photoelectricity dolly is provided with 3 rollers being used for contacting with crystallizer leptoprosopy, and 3 described rollers form a triangle.The design of three rollers is parallel to each other with the top board being intended to 3 planes determined and the photoelectricity dolly making it contact with crystallizer leptoprosopy, thus guarantees that the top board of photoelectricity dolly is parallel with crystallizer leptoprosopy, provides safeguard for effectively measuring.
Further, described horizon light generator comprises concave mirror, is placed in the light source at this concave reflection mirror foci place, and described concave mirror is being fixed on the pulling force torsion spring device inside end cap by hang spring hanging.The horizon light generator of this structure can produce a branch of directional light perpendicular to its gravity vertical, and the directional light that pulling force torsion spring device makes horizon light generator send shines to photoelectricity dolly.
Projection slab caster conicity instrument of the present invention also has microprocessor, display unit, power module, and the signal output part of described ccd sensor is connected with microprocessor, and the display output terminal of microprocessor is connected with display unit.Utilize above-mentioned electron device, the automatic measurement of tapering can be realized.
And the pedestal upper end of conicity instrument of the present invention is provided with on top cover, top cover and arranges handle, level meter, display unit, keyboard and power switch, described display unit is display, keyboard is connected with microprocessor, and the fastening bolt that described support is arranged by upper end is fixed on crystallizer.
Projection slab caster conicity instrument structure in the present invention is simple, principle reliable, and critical piece dispersion distribution, be convenient to the distinguishing feature of keeping in repair, its accuracy of measurement can reach ± 0.15mm.Also there is the feature that volume is little, lightweight, easy to use, measuring speed is fast simultaneously; Especially when measuring common crystallizer leptoprosopy tapering, positive and negative tapering can be differentiated, to find that conical degree of crystallizer is abnormal, ensures slab quality better more quickly.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is slab caster mould schematic diagram.
Fig. 2 is projection slab caster conicity instrument side-looking structural representation of the present invention.
Fig. 3 is projection slab caster conicity instrument plan structure schematic diagram of the present invention.
Fig. 4 is the measuring principle schematic diagram of projection slab caster conicity instrument of the present invention.
Embodiment
As Fig. 2, shown in Fig. 3, the present embodiment projection slab caster conicity instrument, composition comprises: be fixed on the support 1 in inverted L-shaped on crystallizer during measurement, the inner side of support 1 lower end arranges end cap 9, horizon light generator 7 is hung in end cap 9, the outside of support 1 lower end is hinged with a photoelectricity dolly 6, imageing sensor 10 is provided with in photoelectricity dolly 6, angle β is there is between the light-sensitive surface of imageing sensor 10 and photoelectricity dolly 6 top board 15, the horizontal light that horizon light generator 7 is launched shines to photoelectricity dolly 6, light hole 16 is offered in support 1 lower end, long transmissive slit 17 longitudinally offered by the top board 15 of photoelectricity dolly 6, the horizontal light that horizon light generator 7 is launched is through described light hole 16, transmissive slit 17 is projected on imageing sensor 10 light-sensitive surface, during measurement, photoelectricity dolly 6 fully contacts with crystallizer 5 leptoprosopy, now, the top board 15 of photoelectricity dolly 6 is parallel with crystallizer 5 leptoprosopy.
As shown in Figure 4, for the measuring principle schematic diagram of this projection slab caster conicity instrument, suppose that the length of transmissive slit is l, in same vertical plane, a length is irradiated for l with a branch of horizon light, inclination angle is the slit AB of α, is one piece of ccd image sensor that β angle is placed, then ccd image sensor is illuminated the length of part AB' after horizon light impinges upon slit through slit with slit
(formula 3).Because l length and β angle are determined during fabrication, so according to formula 3 and method of interpolation, can list in measured scope and (generally be no more than
) table of comparisons of α angle (or tan α value) and the projected length l' value of slit on CCD, i.e. " α (or tan α)-l' " table of comparisons.When looking into this table of comparisons after the actual l' of recording, namely obtain corresponding α (or tan α) value; Recycle the wide B value of end opening recorded by additive method, just obtain the tapering Taper value that will survey according to (formula 2).
In order to make photoelectricity dolly 6 and crystallizer leptoprosopy fully fit, guaranteeing that the little roof panels of photoelectricity is parallel with crystallizer leptoprosopy, in the present embodiment, taking following technological means:
1, the rotating shaft of photoelectricity dolly and pedestal lower end hinged place is horizontally disposed with, and parallel with crystallizer leptoprosopy;
2, the bottom of photoelectricity dolly is provided with 3 rollers being used for contacting with crystallizer leptoprosopy, and 3 that 3 described rollers contact with crystallizer leptoprosopy form an isosceles triangle.
To try one's best keeping parallelism in order to ensure the light emitted line of horizon light generator, and flatly according to photoelectricity dolly, in the present embodiment as shown in Figure 2, horizon light generator 7 comprises concave mirror 18, is placed in the light source 19 at this concave reflection 18 mirror foci place, and concave mirror 18 is being fixed on the pulling force torsion spring device 8 inside end cap 9 by hang spring hanging.
In order to reduce the wide swing of concave mirror, around concave mirror, crossing one with plastic foam only can make concave mirror just to the passage that slit swings; 8 spring torsion devices are also with zero-position indicator simultaneously, to indicate the exit direction of horizon light, and where necessary for adjusting the exit direction of horizon light, to make the projection of slit on ccd image sensor bright, complete and clear.
In order to realize automatic measurement, projection slab caster conicity instrument of the present invention also has microprocessor, display unit, power module, and the signal output part of ccd sensor is connected with microprocessor, and the display output terminal of microprocessor is connected with display unit.As shown in Figure 2,3, support 1 upper end is provided with on top cover 2, top cover 2 and arranges handle 3, level meter 14, display unit 12, keyboard 11 and power switch 13, display unit 12 is display, and keyboard is connected with microprocessor, and the fastening bolt 4 that support 1 is arranged by upper end is fixed on crystallizer.
Ccd sensor adopts the CCD/CMOS used in single anti-digital camera.The D100 of such as Nikon, CCD/CMOS dimensioned area reaches 23.7mm x 15.6mm, or the CMOS of the EOS-1Ds of Canon is of a size of 36mmx 24mm, so image quality is also relatively better.
Table 1-table 3 is transmissive slit length l=15mm, there are angle β=45 ° between the light-sensitive surface of imageing sensor and the little roof panels of photoelectricity, the wide B of crystallizer end opening is respectively 804.40mm, 1065.80mm, 1327.30mm, survey the inclination alpha that obtains respectively ± 0.253448, ± 0.336019, ± 0.418252 near α angle and the table of comparisons of the projected length l' value of slit on CCD, i.e. " α (or tan α)-l' " table of comparisons.
α-l' the table of comparisons of table 1 α near ± 0.253448
α-l' the table of comparisons of table 2 α near ± 0.336019
α-l' the table of comparisons of table 3 α near ± 0.418252
1, as can be seen from upper table 1,2,3, conventional α be no more than ± 0.5
measurement range in, have: 1. l' value and α one_to_one corresponding, 2. l' value increases along with the increase of α; 3. α-l' image approximation linearly.Therefore " α (or tan α)-l' " table of comparisons of measured is easily obtained; 4. correspond to ± opening degree the measuring error of 0.15mm, the variable quantity of l' is about 3.7 μm, and aforementioned high-precision area array CCD can be differentiated, that is, after this measuring instrument is demarcated, error can be controlled in ± 0.15mm within.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (7)
1. projection slab caster conicity instrument, it is characterized in that composition comprises: support, the inner side of pedestal lower end arranges end cap, horizon light generator is hung in end cap, the outside of pedestal lower end is hinged with a photoelectricity dolly, imageing sensor is provided with in described photoelectricity dolly, angle β is there is between the light-sensitive surface of described imageing sensor and the little roof panels of photoelectricity, pedestal lower end offers light hole, the top board of photoelectricity dolly longitudinally offers transmissive slit, the horizontal light that described horizon light generator is launched is through described light hole, transmissive slit is projected on imageing sensor light-sensitive surface, when described photoelectricity dolly fully contacts with crystallizer leptoprosopy, the top board of photoelectricity dolly is parallel with crystallizer leptoprosopy.
2. projection slab caster conicity instrument according to claim 1, is characterized in that: the rotating shaft of described photoelectricity dolly and pedestal lower end hinged place is horizontally disposed with, and parallel with crystallizer leptoprosopy.
3. projection slab caster conicity instrument according to claim 2, is characterized in that: the bottom of described photoelectricity dolly is provided with 3 rollers being used for contacting with crystallizer leptoprosopy, and 3 described rollers form a triangle.
4. projection slab caster conicity instrument according to claim 2, it is characterized in that: also there is microprocessor, display unit, power module, described imageing sensor is ccd sensor, the signal output part of described ccd sensor is connected with microprocessor, and the display output terminal of microprocessor is connected with display unit.
5. projection slab caster conicity instrument according to claim 2, it is characterized in that: described horizon light generator comprises concave mirror, is placed in the light source at this concave reflection mirror foci place, described concave mirror is being fixed on the pulling force torsion spring device inside end cap by hang spring hanging.
6. projection slab caster conicity instrument according to claim 5, it is characterized in that: described pedestal upper end is provided with on top cover, top cover and arranges handle, level meter, display unit, keyboard and power switch, described display unit is display, keyboard is connected with microprocessor, and the fastening bolt that described support is arranged by upper end is fixed on crystallizer.
7. projection slab caster conicity instrument according to claim 6, is characterized in that: described support is inverted L-shaped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210083833.XA CN103363925B (en) | 2012-03-27 | 2012-03-27 | Projection slab caster conicity instrument |
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| CN201210083833.XA CN103363925B (en) | 2012-03-27 | 2012-03-27 | Projection slab caster conicity instrument |
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| CN103363925A CN103363925A (en) | 2013-10-23 |
| CN103363925B true CN103363925B (en) | 2015-09-30 |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2098673U (en) * | 1991-09-14 | 1992-03-11 | 冶金工业部钢铁研究总院 | Taper detector |
| CN2784874Y (en) * | 2005-01-10 | 2006-05-31 | 包头联方高新技术有限责任公司 | Mold taper measurer for continuous casting machine |
| CN100368770C (en) * | 2006-07-24 | 2008-02-13 | 内蒙古科技大学 | Tube blank mould taper measurer |
| CN201034554Y (en) * | 2007-04-18 | 2008-03-12 | 李波 | Electromechanical type crystallizer conicity instrument |
| CN201034577Y (en) * | 2007-04-27 | 2008-03-12 | 武汉钢铁(集团)公司 | Slab caster crystallizer reverse conicity measurement mechanism |
| CN101398300A (en) * | 2007-09-28 | 2009-04-01 | 上海重矿连铸技术工程有限公司 | Conicity measurement mechanism for circular copper pipe crystallizer |
| JP4608558B2 (en) * | 2008-01-10 | 2011-01-12 | 新日本製鐵株式会社 | Continuous casting method and continuous casting mold |
| CN201327375Y (en) * | 2008-12-19 | 2009-10-14 | 新余钢铁股份有限公司 | Taper detector calibrating device for slab mold |
| CN101530894B (en) * | 2009-04-17 | 2010-12-08 | 武汉南锐工程技术有限公司 | Portable taper gauge for measuring crystallizer and working process thereof |
| CN101927322B (en) * | 2009-06-19 | 2012-06-13 | 鞍钢股份有限公司 | Method for demarcating conical degree of crystallizer |
| KR101242847B1 (en) * | 2009-12-03 | 2013-03-12 | 주식회사 포스코 | Method for correcting long nozzle distortion of continuous casting process |
| CN201795766U (en) * | 2010-09-16 | 2011-04-13 | 鞍钢股份有限公司 | Calibration device for taper instrument of crystallizer |
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