CN101293272B - Apparatus for measuring continuous casting billet skin temperature and measuring method thereof - Google Patents
Apparatus for measuring continuous casting billet skin temperature and measuring method thereof Download PDFInfo
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- CN101293272B CN101293272B CN2008101152006A CN200810115200A CN101293272B CN 101293272 B CN101293272 B CN 101293272B CN 2008101152006 A CN2008101152006 A CN 2008101152006A CN 200810115200 A CN200810115200 A CN 200810115200A CN 101293272 B CN101293272 B CN 101293272B
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Abstract
The invention pertains to the field of instruments and meters, which relates to temperature measurement of high temperature steel billet, in particular to a device for consecutively measuring the surface temperature of continuous casting steel billet on a movable continuous casting steel billet and a method thereof. A ring-shaped thermometer 2 is arranged on a steel billet back-up roll, the diameter of the thermometer is same as that of the arranged back-up roll, and the thermometer and the back-up roll rotate around a central axis of the roll at the same speed. When temperature is measured, the ring thermometer 2 rotates; when a temperature measurement probe of a temperature thermocouple 1 on the thermometer is contacted with the surface of a steel billet 8, the surface temperature of the steel billet 8 is measured. A lead 3 which is connected with the other end of the thermocouple 1 is fixed on the ring thermometer 2 and rotates along with the ring thermometer 2. Signals in the rotating lead 3 are transmitted into a still lead 5 through a rotation connector 4, and the still lead 5 is connected with a temperature signal processor 6 and a computer 7 that are arranged outside againto achieve the purpose of measuring the temperature and obtaining the temperature data. The device of the invention is directly arranged on the back-up roll of a continues caster, and additional space is not required, thereby satisfying the current situation of complicated structure of the continuous caster; the basic principle is that contact-type temperature measurement of the thermocouple is adopted, and the measured temperature is comparatively accurate; the scope of temperature measurement is wide, and the abrasion to the probe of thermocouple is comparatively little, therefore, the service life of the thermocouple is prolonged.
Description
Technical field
The invention belongs to instrument field, relate to the measurement of high temperature billet steel temperature, particularly a kind of on the continuous casting steel billet of motion the apparatus and method of continuous measurement continuous casting steel billet surface temperature.
Background technology
In continuous casting production process, secondary cool off output that accurate control directly has influence on casting machine and strand quality, optimize the secondary cooling system, realize that the dynamic control of secondary cooling seems very necessary.Realize two cold dynamic controls, at first must grasp the temperature distribution state of casting billet surface, so temperature measuring equipment is the critical component of two cold dynamic controls in the casting process.For a long time, iron and steel enterprise has adopted different temp measuring methods to carry out repeatedly exploring both at home and abroad, because be accompanied by high temperature in the continuous casting production, environment is abominable, the staff is difficult near casting billet surface, measure at present casting blank surface temperature generally usefulness be can remote temperature measurement infrared radiation thermometer; Owing to the influence of the high temperature on the two cold-zone casting billet surfaces, moisture film, iron scale and strand top water smoke, be difficult to measure exactly the temperature of casting billet surface.The enterprise that has adopts and blows water smoke open by Compressed Gas earlier, removes thermometric with infrared radiation thermometer again, but because of the restriction of working environment, the operation more complicated, the thermometric accuracy is subjected to very big influence, is difficult for realizing continuous temperature measurement.Thereby, little to the progress of continuous casting billet surface continuous temperature measurement device both at home and abroad at present, the main infrared radiation thermometer thermometric that adopts, because of the variation and the environmental disturbances of emissivity bigger to its influence, measuring distance, target sizes all there is relatively strict requirement, though through the correction of computer model, reliability still is doubtful, therefore to realize that two cold dynamic control difficulties truly are very big.
Summary of the invention
The purpose of this invention is to provide that a kind of temperature-measuring range is wide, Stability Analysis of Structures, with higher precision the continuous casting billet surface carried out the method and apparatus of continuous temperature measurement.
A kind of device of measuring continuous casting billet skin temperature comprises: temperature thermocouple 1, annular temperature measurer 2, thermal compensation lead 3, rotary connector 4, static lead 5, temperature signal processor 6 and computer 7; Thermocouple 1 is installed on the pilot hole of annular temperature measurer 2, and annular temperature measurer 2 is installed on the backing roll 12 and closely cooperates with backing roll 12 and is integral, and the diameter of annular temperature measurer 2 is consistent with the diameter of installation backing roll 12, and material is identical with the material of backing roll 12; Thermocouple 1 other end connects thermal compensation lead 3, thermal compensation lead 3 is fixed on annular temperature measurer 2 inside, along with annular temperature measurer 2 rotates together, take a kind of rotary connector 4 to connect between thermal compensation lead 3 and the static lead 5 that is connected external signal processor 6, temperature signal processor 6 links to each other with computer 7, obtains the casting blank surface temperature distribution map by Treatment Analysis.
The temperature element of this device is the temperature thermocouple 1 that is evenly distributed on the annular temperature measurer 2, and its quantity increases and decreases according to actual needs.
A kind of method that strand table surface temperature is measured comprises the steps:
(1) provide the device of an aforesaid measurement continuous casting billet skin temperature, temperature measurement fraction is the temperature thermocouple 1 that outer jointing jacket is arranged;
(2) described temperature thermocouple 1 is evenly distributed on the annular temperature measurer 2, annular temperature measurer 2 is installed on the backing roll 12 of conticaster, rotates with speed around the roller center axle with backing roll 12;
(3) temperature thermocouple 1 temperature probe on the annular temperature measurer 2 that will rotate contacts with strand 8 surfaces and records temperature;
(4) other end with temperature thermocouple 1 links to each other with temperature signal processor 6;
(5) described temperature signal processor 6 is linked to each other with calculator 7, obtain temperature profile by Treatment Analysis.Obtain the casting blank surface temperature distribution map by Treatment Analysis.
The outer jointing jacket at the thermocouple 1 temperature probe place on the annular temperature measurer 2; exceed the outer surface 1～2mm of annular temperature measurer 2 after the installation a little; can withstand by the design flexibility device in case of necessity, contact closely with casting billet surface, measure the billet surface temperature exactly so that reach temperature probe.
The diameter of annular temperature measurer 2 is identical with the diameter of its backing roll of installing 12, closely cooperates between them.When in casting process, strand 8 surface temperatures being measured, annular temperature measurer 2 rotates with speed with backing roll 12, when the temperature probe of equally distributed thermocouple 1 on the annular temperature measurer 2 contacted with strand 8 surfaces, temperature probe obtained induction, produced temperature signal.
The outer surface of considering annular temperature measurer 2 and its backing roll of installing 12 has friction when being in contact with one another with strand, friction can produce wearing and tearing for a long time, for guarantee annular temperature measurer 2 with the backing roll of installing 12 outer surfaces integral surface after wearing and tearing smooth, cc billet surface quality is not impacted, the material of annular temperature measurer 2 adopts the material identical or close with backing roll 12.
This device temperature measurement fraction is the temperature thermocouple that outer jointing jacket is arranged; Described temperature thermocouple is evenly distributed on the temperature measurer of annular, annular temperature measurer is installed in and forms an integral body on the backing roll of conticaster, and the diameter of annular temperature measurer is identical with the diameter of place backing roll; When backing roll rotated, annular temperature measurer rotated with speed around the roller center axle together with roller, and the temperature probe of thermocouple records temperature when touching casting billet surface; The other end of described temperature thermocouple is linked to each other with temperature signal processor, and temperature signal processor links to each other with computer again, obtains the casting blank surface temperature distribution map by Treatment Analysis.
The present invention has the following advantages:
(1) device directly is contained on the backing roll of conticaster, does not need exceptional space, meets the baroque present situation of conticaster;
(2) basic principle is to use the thermocouple contact temperature-measuring, and it is more accurate to record temperature;
(3) temperature-measuring range is wide, and its scope is 0～1600 ℃;
(4) thermometric time annular temperature measurer rotates, and is rolling friction between thermocouple temperature measurement probe on it and the billet surface, and is relatively little to the thermocouple probe wearing and tearing, can prolong the service life of thermocouple.
Description of drawings
Fig. 1 is for measuring wide center of strand and 1/4 place's temperature, the installation site schematic diagram of annular temperature measurer 2 on backing roll 12;
The schematic representation of apparatus of Fig. 2 for realizing according to method of the present invention continuous casting billet skin temperature is carried out continuous measurement;
Fig. 3 is the thermocouple schematic diagram that has protective sleeve.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are described in detail:
As shown in Figure 2, be used to realize that according to the present invention the device that the continuous casting steel billet surface temperature is carried out method for continuous measuring comprises: temperature thermocouple 1 (quantity of thermocouple 1 can increase and decrease according to actual needs, and drafting among the figure is 8), annular temperature measurer 2, thermal compensation lead 3, rotary connector 4, lead 5, temperature signal processor 6 and computer 7.The diameter of annular temperature measurer 2 is identical with the diameter of its backing roll of installing 12, closely cooperates between them.When in casting process, strand 8 surface temperatures being measured, annular temperature measurer 2 and backing roll 12 rotate with speed together, arrow among the figure is represented the direction of motion of annular temperature measurer and strand respectively, when the surface of the probe of equally distributed thermocouple 1 on the annular temperature measurer 2 and strand 8 contacts, probe obtains induction, produces temperature signal.
The outer surface of considering annular temperature measurer 2 and its backing roll of installing 12 has friction when being in contact with one another with strand, friction will produce wearing and tearing for a long time, for guarantee annular temperature measurer 2 with the backing roll of installing 12 outer surfaces integral surface after wearing and tearing smooth, cc billet surface quality is not impacted, the material of annular temperature measurer 2 adopts the material identical or close with backing roll 12.Thermocouple 1 is installed on the pilot hole of annular temperature measurer 2, can there be certain clearance because of assembling between them, casting billet surface can be entered into temperature measurer inside for preventing cooling water by the slit by the water spray cooling in the casting process, uses sealing ring 9 sealings between thermocouple 1 and the annular temperature measurer 2.The thermal compensation lead 3 that connects the other end of thermocouple 1 is fixed on annular temperature measurer 2 inside, along with annular temperature measurer 2 rotates together, for temperature signal is transmitted between the thermal compensation lead 3 that rotates and the static lead 5 that is connected external signal processor 6, take a kind of rotary connector 4 to connect.Two parts that rotary connector 4 is in contact with one another, a part are contained on backing roll or the annular temperature measurer, rotate thereupon, and this end connects thermal compensation lead 3; On the object that an other end is contained in and outside maintenance is static, the static lead 5 that this termination is connected with signal processor guarantees that the two ends of rotary connector 4 can interconnect the transmission signal.The outer jointing jacket at the thermocouple 1 temperature probe place on the annular temperature measurer 2; exceed annular temperature measurer 2 outer surfaces 1～2mm after the installation a little; can withstand by the design flexibility device in case of necessity, contact closely with casting billet surface, measure the billet surface temperature exactly so that reach temperature probe.
As shown in Figure 3, there is a protective sleeve 10 temperature thermocouple 1 outside, and protective sleeve 10 usefulness are high temperature resistant, architectural characteristic stable, corrosion-resistant, oxidation resistant material constitutes, as the GH3039 nickel base superalloy.The outer jointing jacket at thermocouple 1 temperature probe place is made hemispherical, the frictional force when reducing temperature probe part to the full extent and contact with strand, the life-span of slowing down wearing and tearing, raising temperature thermocouple.What adopted thermocouple 1 inside is double platinum rhodium thermocouple 11, and it measures temperature can reach 1600 ℃.
Concise and to the point description is as follows to the thermometric process of continuous casting steel billet surface temperature:
In continuous casting production process, strand travels forward under the effect of driven roller, and the strand of motion is driving the strand backing roll along with rotation.To need on the strand to select thermometric impact point, find the backing roll at this impact point place, annular temperature measurer 2 is installed on this backing roll corresponding local.The diameter of annular temperature measurer 2 is designed to consistent with the diameter of installation backing roll, and annular temperature measurer 2 rotates around the roller center axle together with backing roll.The quantity of thermocouple on the annular temperature measurer 2, according to adjacent two thermocouples priority being determined with the requirement in the time interval of casting billet surface contact specifically calculate with this formula: the quantity of thermocouple=backing roll that annular temperature measurer is installed rotates one and encloses the time interval that used adjacent two thermocouples of time ÷ successively contact strand.And annular temperature measurer place backing roll rotates the technological parameter decision of used time of a circle by conticaster.When the temperature probe that forwards the temperature thermocouple 1 on it to when annular temperature measurer 2 contacts with casting billet surface, temperature probe is sensed temperature signal, this temperature signal passes in the outside temperature signal processor 6 with lead 5 by lead 3, rotary connector 4, arrangement and storing temperature data in signal processor 6, at last these data are transported to computer, analyzed through data processing software, obtained the casting blank surface temperature distribution map.
Claims (2)
1. a device of measuring continuous casting billet skin temperature is characterized in that, comprising: temperature thermocouple (1), annular temperature measurer (2), thermal compensation lead (3), rotary connector (4), static lead (5), temperature signal processor (6) and computer (7); Thermocouple (1) is installed on the pilot hole of annular temperature measurer (2), annular temperature measurer (2) is installed on the backing roll (12), and closely cooperate with backing roll (12) and to be integral, the diameter of annular temperature measurer (2) is consistent with the diameter of installation backing roll (12), and material is identical with the material of backing roll (12); Thermocouple (1) other end connects thermal compensation lead (3), thermal compensation lead (3) is fixed on annular temperature measurer (2) inside, along with annular temperature measurer (2) rotates together, take a kind of rotary connector (4) to connect between thermal compensation lead (3) and the static lead (5) that is connected temperature signal processor (6), the same computer of temperature signal processor (6) (7) links to each other, and obtains the casting blank surface temperature distribution map by Treatment Analysis.
2. the method that casting blank surface temperature is measured is characterized in that, comprises the steps:
(1) provide the device of a measurement continuous casting billet skin temperature as claimed in claim 1, temperature measurement fraction is the temperature thermocouple (1) that outer jointing jacket is arranged;
(2) described temperature thermocouple (1) is evenly distributed on the annular temperature measurer (2), annular temperature measurer (2) is installed on the backing roll (12) of conticaster, rotates with speed around the roller center axle with backing roll (12);
Temperature thermocouple (1) temperature probe on the annular temperature measurer (2) that (3) will rotate contacts with strand (8) surface and records temperature;
(4) other end with temperature thermocouple (1) links to each other with temperature signal processor (6);
(5) the same calculator of described temperature signal processor (6) (7) is linked to each other, obtain temperature profile by Treatment Analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101152006A CN101293272B (en) | 2008-06-18 | 2008-06-18 | Apparatus for measuring continuous casting billet skin temperature and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101152006A CN101293272B (en) | 2008-06-18 | 2008-06-18 | Apparatus for measuring continuous casting billet skin temperature and measuring method thereof |
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| Publication Number | Publication Date |
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| CN101293272A CN101293272A (en) | 2008-10-29 |
| CN101293272B true CN101293272B (en) | 2011-01-19 |
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| CN2008101152006A Expired - Fee Related CN101293272B (en) | 2008-06-18 | 2008-06-18 | Apparatus for measuring continuous casting billet skin temperature and measuring method thereof |
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| TWI417392B (en) * | 2010-02-12 | 2013-12-01 | China Steel Corp | Internal temperature measuring device for coil and its method |
| TWI476384B (en) * | 2014-05-08 | 2015-03-11 | China Steel Corp | Surface temperature measurement device |
| CN106482867A (en) * | 2015-08-24 | 2017-03-08 | 鞍钢股份有限公司 | A kind of contact band steel surface temperature measurement instrument and method |
| CN107389219B (en) * | 2017-08-05 | 2019-12-03 | 张慧君 | A kind of amorphous alloy strips fast quenching list roll surface temperature detector |
| CN108801487B (en) * | 2018-04-17 | 2021-01-08 | 李傲兰 | Metal test piece temperature measuring device and system |
| CN109030581B (en) * | 2018-07-04 | 2024-04-16 | 南京铁道职业技术学院 | Composite construction's pantograph carbon slide surface damage detects and uses charge converter |
| CN110404979B (en) * | 2019-06-28 | 2021-07-23 | 中冶华天工程技术有限公司 | Ring-shaped diameter and temperature measuring instrument for rolling and cooling control of bearing steel |
| CN110762985A (en) * | 2019-09-21 | 2020-02-07 | 徐州市正峰锌业有限公司 | Secondary zinc oxide has conveying equipment of dry control by temperature change |
| CN113468741A (en) * | 2021-06-30 | 2021-10-01 | 东北大学 | Steel plate red return temperature measuring method and device and storage medium |
| CN113959578A (en) * | 2021-10-18 | 2022-01-21 | 中冶赛迪技术研究中心有限公司 | Casting blank contact type continuous temperature measuring device and manufacturing method thereof |
| CN114048654A (en) * | 2021-11-15 | 2022-02-15 | 中冶赛迪工程技术股份有限公司 | Method for detecting surface temperature of casting blank and computer readable storage medium |
| CN115255306B (en) * | 2022-08-25 | 2023-12-15 | 中冶赛迪工程技术股份有限公司 | On-line continuous temperature detection device and method for self-adaptive slab continuous casting billet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3246519A (en) * | 1962-10-08 | 1966-04-19 | Western Electric Co | Measurement of temperature of advancing wire |
| US3731536A (en) * | 1968-12-07 | 1973-05-08 | Demag Ag | Apparatus for continually measuring the temperature of a continuously cast metal rod |
-
2008
- 2008-06-18 CN CN2008101152006A patent/CN101293272B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3246519A (en) * | 1962-10-08 | 1966-04-19 | Western Electric Co | Measurement of temperature of advancing wire |
| US3731536A (en) * | 1968-12-07 | 1973-05-08 | Demag Ag | Apparatus for continually measuring the temperature of a continuously cast metal rod |
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