CN101592522B - Billet temperature measuring device based on temperature compensation - Google Patents
Billet temperature measuring device based on temperature compensation Download PDFInfo
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- CN101592522B CN101592522B CN2009101002107A CN200910100210A CN101592522B CN 101592522 B CN101592522 B CN 101592522B CN 2009101002107 A CN2009101002107 A CN 2009101002107A CN 200910100210 A CN200910100210 A CN 200910100210A CN 101592522 B CN101592522 B CN 101592522B
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- billet
- temperature
- water
- tube
- purge
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000000498 cooling water Substances 0.000 claims abstract description 5
- 238000010926 purge Methods 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 5
- 239000000112 cooling gas Substances 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 abstract description 7
- 230000005855 radiation Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 2
- 238000010408 sweeping Methods 0.000 abstract 4
- 238000003475 lamination Methods 0.000 abstract 2
- 230000002459 sustained effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The invention discloses a billet temperature measuring device based on temperature compensation. The device comprises a water filling cavity, a sweeping sight tube, an infrared temperature measuring sensor and corresponding auxiliary connecting and assembling components, wherein the water filling cavity forms a water layer with certain height above a hot rolling billet through filling water; the height of the water layer is not influenced by the thickness of water layers around; the sweeping sight tube mainly realizes the sighting function of the infrared temperature measuring sensor; and cooling air is introduced into the sweeping tube to realize sweeping on cooling water droplets, fog and dust and cooling on the temperature measuring sensor at the same time. Infrared radiation permeating the billet with certain water layer thickness is received by the infrared temperature measuring sensor, and as the permeated water layer thickness is stable and sustained, and the short wave infrared sensor with strong capability of water layer permeation is selected, measurement on the surface temperature of the billet in a lamination cooling zone can be realized through correcting coefficients of the sensor. The device has a simple structure, does not influence the surface temperature of the billet when measuring the temperature, and can accurately measure the surface temperature of the billet in the lamination cooling zone without contact.
Description
Technical field
The present invention relates to the temperature measuring equipment in the metallurgical production process, especially relate to a kind of billet temperature measuring device based on temperature compensation.
Background technology
Because the environment very severe of laminar flow cooled region, traditional infrared measurement of temperature method is difficult to get rid of the interference of chilled water and fog.The disappearance of cold section temperature data of layer causes the segmentation Temperature Feedback to carry out, and causes temperature section control to rest on the model prediction stage, has also hindered the further raising of temperature control precision.
In order to address this problem, mainly be to utilize air purging device to blow open to cover the chilled water and the fog of billet surface in the prior art, but when blowing chilled water open, can reduce the billet surface temperature again, can't accurately reflect real temperature.
Patent CN 01141418.9 has proposed a kind of accurate assay method of secondary cooling area for continuous casting surface temperature, and this method is carried out continuous coverage to casting blank surface temperature, and taking-up maximal value wherein is as the true temperature of casting billet surface.
Patent CN1584521A discloses the radiation temperature measurement method that a kind of participating medium covers the high temperature surface, proposition is by setting up positive and negative problem model of radiation temperature measurement and radiation temperature measurement indirect problem iterative algorithm, associated ancillary information by dielectric attribute, realized the measured temperature of Radiation Temperature Measurement Instrument under the participating medium influence carried out the inverting correction, obtained the measured surface temperature.
More than two patents self limitation is all arranged, the temperature survey of CN 01141418.9 is based on the discontinuity that casting billet surface covers material, if surface cool moisture film and fog are continuous, just can't record the true temperature on surface, the limitation of CN1584521A is when being the participating medium variation in thickness, just can't revise temperature model, thus measurement that can't the covered pyrometric scale surface temperature of accurate response.
Summary of the invention
The problem that is difficult to measure at laminar flow cooling zone temperature, the object of the present invention is to provide a kind of billet temperature measuring device based on temperature compensation, utilize the water filling device to form the water layer of a Metacentre Height at hot rolling layer cold area steel billet upper surface, the temperature compensation debugging functions of combined sensor, simultaneously utilize air purging device to get rid of the interference of fog, accurately measure the temperature of billet surface at water filling device upside.
The technical solution used in the present invention is:
Purging aiming tube endoporus of the present invention divides two sections, the installing plate that has cooling gas inlet is all around fixed hypomere junction on the purging aiming tube, infrared temperature-test sensor is installed in the installing plate center and extend into and purges aiming tube hypomere endoporus, infrared temperature-test sensor cable and cooling air enter from the end cap central bore that purges aiming tube pipe top and purge aiming tube top, fill the upper end, chamber with connector with sweep the aiming tube hypomere and be connected afterwards and leave refrigerating gas and export, the side, filling chamber of close connector one end is from top to bottom according to having a plurality of apertures and filling water inlet, filling the lower surface, chamber is arc line type, in the face of hot rolling steel billet, and immerse in the billet surface cooling water layer.
The beneficial effect that the present invention has is:
Utilize the interference of cooling air cooling infrared temperature-test sensor and eliminating fog, use simultaneously and fill the chamber forms constant thickness at the steel billet upper surface water layer, in conjunction with the temperature coefficient debugging functions of infrared temperature-test sensor, can accurately measure laminar flow cooling billet surface temperature.This method is little to billet surface temperature effect, and is safe and reliable.Prick the cold temperature data of getting of layer by the heat that obtains and to realize existing temperature model is carried out the parameter correction, improve the control accuracy of model, and even exploitation removes more, and the high-precision temperature model all has positive meaning.
The present invention is simple in structure, does not influence the billet surface temperature during thermometric, can noncontact, measure layer cold area billet surface temperature accurately.
Description of drawings
Fig. 1 is based on the temperature measuring equipment field conduct design sketch of temperature compensation.
Fig. 2 is the semisectional view of water filling device.
Among the figure, 1. end cap, 2. infrared temperature-test sensor, 3. sensor installing plate, 4. cooling gas inlet, 5. purging aiming tube, 6. connector, 7. refrigerating gas outlet, 8. aperture is 9. filled water inlet, 10. filling chamber, 11. chilled waters, 12. hot rolling steel billets, 13. arc line type structures, 14. transparent cover plates.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1, purge aiming tube 5 endoporus and divide two sections, the installing plate 3 that has cooling gas inlet is all around fixed hypomere junction on the purging aiming tubes 5, infrared temperature-test sensor 2 is installed in installing plate 3 centers and extend into and purges aiming tube 5 hypomere endoporus, infrared temperature-test sensor cable and cooling air enter from end cap 1 center pit that purges aiming tube 5 pipe tops and purge aiming tube 5 tops, fill 10 upper ends, chamber with connector 6 with sweep aiming tube 5 hypomeres and be connected afterwards and leave refrigerating gas and export 7,10 sides, filling chamber of close connector 6 one ends are from top to bottom according to having a plurality of apertures 8 and filling water inlet 9, filling 10 lower surfaces, chamber is arc line type 13, in the face of hot rolling steel billet 12, and immerse in the billet surface cooling water layer 11.
As shown in Figure 2, aperture 8 is positioned at fills 10 top inner surface top sides, chamber, and filling 10 tops, chamber is transparent cover plate 14, and the bottom is an arc line type structure 13.
Fig. 1 is based on the temperature measuring equipment field conduct synoptic diagram of temperature compensation.Because the rapid movement of steel billet and spraying into of chilled water, fluctuating in the surface of chilled water, can't finish thermometric by direct correction.10 lower surfaces, chamber are filled in the face of hot rolling steel billet 12 in the top of by extraneous mechanical hook-up hot rolling steel billet being placed and being fixed on to whole temperature measuring equipment during thermometric, and immerse in the billet surface cooling water layer 11.In the thermometric process, provide to device always and fill water and refrigerating gas, filling water enters in the filling chamber from filling chamber side inlet 9, the air and the excessive moisture of filling in the chamber are discharged from the aperture 8 of filling the top of chamber downside, and the inside upper surface that keeps filling the chamber is full of chilled water all the time in the H height of billet surface.Infrared temperature-test sensor cable and cooling air enter from end cap 1 center pit that purges the cooling tube top and purge aiming tube top, are immersed by the inlet 4 of installing plate to purge the aiming tube bottoms again, blow out from the outlet 7 of junction.Purge aiming tube and can assist the aiming function that realizes infrared temperature-test sensor, inner simultaneously logical cooling air.Cooling air except can realizing cooling to infrared temperature-test sensor, can also realize cleaning effect to sensor optical path, water smoke and the dust got rid of in the light path disturb, and the outer upper surface that can be placed on sensor lens and filling chamber simultaneously forms condensation.The infrared energy of billet surface can see through the H height water layer between obturator and the steel billet like this, obtained by infrared sensor, because water layer has infrared absorbance, the temperature that directly reads is to reflect it really is the size of temperature, need compensate sensor, eliminate the influence of H thickness water layer.Under the certain prerequisite of water layer thickness H, can directly use the coefficient debugging functions of sensor, just can directly obtain the true temperature of billet surface.To be unlikely to loss too big for the energy that guarantees to penetrate in addition, for the selection of infrared temperature-test sensor, because shortwave is strong to the penetration capacity of water layer, can select the infrared temperature-test sensor of service band at shortwave.
Fig. 2 is the semisectional view of water filling device.For the air in the cavity is discharged, guarantee water layer height all-the-time stable at H, upside is provided with aperture in the filling chamber.In order to reduce the percussive action of water, the downside of filling the chamber has been processed into arc line type in addition to temperature measuring equipment.The upper end of filling the chamber is a transparent cover plate, and cover plate materials is selected the material of infrared shortwave enter solution.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101002107A CN101592522B (en) | 2009-06-25 | 2009-06-25 | Billet temperature measuring device based on temperature compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101002107A CN101592522B (en) | 2009-06-25 | 2009-06-25 | Billet temperature measuring device based on temperature compensation |
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| Publication Number | Publication Date |
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| CN101592522A CN101592522A (en) | 2009-12-02 |
| CN101592522B true CN101592522B (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101002107A Expired - Fee Related CN101592522B (en) | 2009-06-25 | 2009-06-25 | Billet temperature measuring device based on temperature compensation |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632213A (en) * | 2011-02-12 | 2012-08-15 | 沈阳鑫君城电子有限公司 | Method for measuring and controlling surface temperature of casting blank and special device thereof |
| CN103994825A (en) * | 2014-03-07 | 2014-08-20 | 马钢(集团)控股有限公司 | Off-line comparison device of infrared temperature measurement equipment, and comparison method of off-line comparison device |
| DE102017208645A1 (en) * | 2017-05-22 | 2018-11-22 | Siemens Aktiengesellschaft | Probe head |
| CN111307288A (en) * | 2019-12-26 | 2020-06-19 | 南京佛利蒙特测控技术有限公司 | Infrared temperature measuring device for measuring temperature of strip steel of electromagnetic induction heating furnace |
| CN112296301A (en) * | 2020-11-24 | 2021-02-02 | 苏州弘皓光电科技有限公司 | Steel billet temperature colorimetric measurement system and method in steelmaking continuous casting secondary cooling chamber |
| CN116625518A (en) * | 2023-05-06 | 2023-08-22 | 南京净环热冶金工程有限公司 | Channel radiation temperature measurement method and device for screen wall environment in furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634449Y (en) * | 2003-06-27 | 2004-08-18 | 杨丽娟 | Temperature detector |
| CN101198848A (en) * | 2005-06-09 | 2008-06-11 | 米纳斯吉拉斯钢铁工厂股份有限公司 | Device for Continuous Temperature Measurement of Molten Steel in Tundish by Using Optical Fiber and Infrared Pyrometer |
| CN101301661A (en) * | 2008-06-20 | 2008-11-12 | 浙江大学 | Hot-rolled strip temperature measuring device |
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2009
- 2009-06-25 CN CN2009101002107A patent/CN101592522B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634449Y (en) * | 2003-06-27 | 2004-08-18 | 杨丽娟 | Temperature detector |
| CN101198848A (en) * | 2005-06-09 | 2008-06-11 | 米纳斯吉拉斯钢铁工厂股份有限公司 | Device for Continuous Temperature Measurement of Molten Steel in Tundish by Using Optical Fiber and Infrared Pyrometer |
| CN101301661A (en) * | 2008-06-20 | 2008-11-12 | 浙江大学 | Hot-rolled strip temperature measuring device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2003-21560A 2003.01.24 |
| JP特开平5-296844A 1993.11.12 |
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| CN101592522A (en) | 2009-12-02 |
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