CN202305189U - System for testing hot performance of continuous casting secondary cooling nozzle - Google Patents
System for testing hot performance of continuous casting secondary cooling nozzle Download PDFInfo
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- CN202305189U CN202305189U CN2011203798918U CN201120379891U CN202305189U CN 202305189 U CN202305189 U CN 202305189U CN 2011203798918 U CN2011203798918 U CN 2011203798918U CN 201120379891 U CN201120379891 U CN 201120379891U CN 202305189 U CN202305189 U CN 202305189U
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Abstract
The utility model relates to a system for testing the hot performance of a continuous casting secondary cooling nozzle. The system at least comprises a metal sample heating device, an experiment platform and a signal acquisition and analysis system, wherein the heating device heats a metal sample to a specified temperature; a nozzle support is arranged on the experiment platform; nozzles are fixed on the nozzle support and are positioned above the metal sample in a hanging mode; and a temperature sensor is arranged in the metal sample. By the system, single-nozzle and multi-nozzle hot performance tests can be performed, and the number and the height of the nozzles, the horizontal position and the spacing among the nozzles can be adjusted; the size of the metal sample can be changed by machining according to the requirement of a nozzle spraying area, so that a one-dimensional heat transfer condition is ensured; temperature changing data can be measured by a plurality of thermoelectric couples and transmitted to a computer in real time, and the recorded data can be analyzed and corrected; and a heat transfer coefficient can be computed by the computer according to the acquired data, and a function relation between the heat transfer coefficient and each variable can be regressed for guiding on-site continuous casting production by combining the heat transfer coefficient with nozzle cold performance parameters.
Description
Technical field
The utility model belongs to steel-making continuous casting production simulation technical field, is specifically related to a kind of secondary cooling nozzle of continuous casting hot performance test macro, is used for measuring accurately the spray nozzle thermal state performance of continuous casting two cold process.
Background technology
Casting process is actual to be the process of a solidification and heat transfer, as the key link that continuous casting billet solidifies, conducts heat at continuous casting billet, and many careful deep work have all been launched in aspects such as crystallizer heat transfer and two cold-zone heat transfers.Process of setting under the quantitative examination different technology conditions, and many-sided influence of investigating various factors to casting process have also obtained using preferably at the design aspect of optimizing continuous casting process, raising slab quality and conticaster.
In the cooled and solidified process of continuous casting billet, the cooled and solidified of two cold-zones is key links of casting blank solidification, and under the certain situation of casting machine equipment and operating procedure, the secondary cooling plays a decisive role to slab quality.The formation of defectives such as continuous casting billet underbead crack, surface crack, bulge, water chestnut change (off-square), center segregation and secondary cooling have closely gets in touch.
In secondary cooling area for continuous casting, through the nozzle cooling, quicken solidifying of strand, can control casting blank surface temperature and distribute, prevent that ejection from producing mass defect.Therefore, the quality of secondary cooling nozzle of continuous casting cooling characteristics, closely related with continuous casting production efficiency, slab quality.In two cold-zones in the various heat transfer types, the heat transfer through nozzle shower water and casting billet surface is main, also is controlled.It is extremely important to reasonable formulation secondary cooling zone water spray strategy accurately to measure nozzle water spray cooling heat transfer coefficient, and continuous casting production and slab quality are had significance.
Domestic spray nozzle thermal state performance test at present mainly is after steel appearance is heated to uniform temperature, uses single-nozzle that chilled water is ejected into the surface of steel appearance, record steel appearance temperature variation.Owing to be that one-jet is tested, and specimen size is little, the heat transfer situation in can't authentic and valid simulation casting process, and the test result poor accuracy can not provide effective reference to the formulation of continuous casting secondary cooling system.
Summary of the invention
The technical matters that the utility model will solve is the deficiency to above-mentioned prior art, proposes a kind of secondary cooling nozzle of continuous casting hot performance test macro, is used for measuring the secondary cooling nozzle of continuous casting hot performance accurately, instructs the continuous casting actual production.
For solving the problems of the technologies described above, the technical scheme of the utility model is:
A kind of secondary cooling nozzle of continuous casting hot performance test macro is characterized in that: comprise test button heating arrangement, experimental stand and corresponding signal processing and analysis system at least; Described heating arrangement is the rectangular parallelepiped worktable, and the upper surface is for can be heated to test button placed on it assigned temperature and uniformity of temperature profile, and guaranteeing to conduct heat is the heating table top of one dimension direction; Described experimental stand bottom is the rectangular parallelepiped worktable, on the rectangular parallelepiped worktable nozzle holder is set, and nozzle is fixed on the nozzle holder, and can move through the nozzle moving mechanism on the nozzle holder; Nozzle is unsettled to be positioned at above the test button, and is provided with perpendicular to the upper surface of experimental stand worktable; Described signal processing and analysis unit comprises temperature sensor, data acquisition unit, data analysis unit at least, and described temperature sensor is inserted in the test button, and is connected to data acquisition unit and data analysis unit in order through lead.
In the described experimental stand; The inboard setting in the long limit nozzle holder vertical of rectangular parallelepiped worktable upper surface, bottom with the upper surface; Nozzle transverse moving mechanism and nozzle longitudinal moving mechanism are set respectively on the nozzle holder; Nozzle is fixed on the support body of nozzle holder through the nozzle clamping device, and can carry out height and the adjustment of horizontal direction position through nozzle transverse moving mechanism and nozzle longitudinal moving mechanism.
A plurality of nozzles are set on the described nozzle holder, and the number of nozzle is confirmed according to requirement of experiment.
The injector spacing regulating device also is set on the described nozzle holder.
Described temperature sensor adopts how secondary thermopair, and said thermopair is inserted respectively in a plurality of test points in the test button; Many secondary thermopairs are wired to data acquisition unit respectively; Said thermopair can amplify to get off the real-time acquisition and recording of the temperature-time-variable data in the cooling procedure to transmit through conversion and signal, also can be to record data analysis and correction.
Described temperature sensor is inserted respectively in the test point of test button, and a plurality of temperature sensors are uniformly distributed with by many rows in a side of test button.
The rectangular parallelepiped worktable height such as grade of said experimental stand bottom rectangular parallelepiped worktable and heating arrangement and with wide.
Described data acquisition unit and data analysis unit are all mainly by setting acquisition time; Export the temperature of each test point; Calculate heat transfer coefficient and heat transfer coefficient the year time changing curve; Return the funtcional relationship between heat transfer coefficient and jet density, test button surface temperature, the cooling water temperature, and the computing machine that shows constitutes.
Described data acquisition unit and data analysis unit are developed with C# on the windowsXP platform.
During use, test button is heated to assigned temperature through heating arrangement; Be placed into then on the experimental stand, nozzle begins the test button cooling of spraying water; The synchronous signal acquisition analysis system of water spray cooling is with the interior temperature of temperature sensor measurement test button, and temperature-time-variable data acquisition and recording gets off in the cooling procedure of will spraying water, and calculates heat transfer coefficient then and shows.
Concrete use step is:
Step 1, test button is placed into is heated to assigned temperature on the heating arrangement, make uniformity of temperature profile, and guarantee to conduct heat and be the one dimension direction;
The data acquisition unit of step 3, signal processing and analysis system is according to setting-up time, directly to temperature sensor sampling, in the computing machine of the temperature in the cooling procedure-time-variable data real time input data analytic unit so that computing; After test button is cooled to design temperature, stop sampling; Data analysis unit is calculated heat transfer coefficient and suitably correction with the data screening statistical study, and the nozzle cold-performance parameter of binding data analytic unit stored, and the funtcional relationship that returns out between heat transfer coefficient and each variable also directly shows.
The size of used test button requires processing according to the jeting area of nozzle.
The advantage of the utility model:
1, can simulate the actual cooling procedure of continuous casting, can carry out one-jet, also can carry out the hot performance test of a plurality of nozzles, the nozzle number is confirmed according to requirement of experiment; Nozzle height is adjustable, and in the time of multi-nozzle, injector spacing is adjustable when carrying out the hot performance test of a plurality of nozzles, and test result is true and accurate more.
2, the test button size requires processing according to the nozzle ejection zone, has guaranteed the one dimensional heat transfer condition.
3, adopt how secondary thermopair to measure the temperature variation data of test button in the cooling procedure, be real-time transmitted to computing machine, and can be to record data analysis and correction, test result is more accurate.
4, the heat transfer coefficient that the data of gathering is gone out through COMPUTER CALCULATION in conjunction with nozzle cold-performance parameter, can return out the funtcional relationship between heat transfer coefficient and each variable, instructs the continuous casting produced on-site.
Description of drawings
Fig. 1 is the secondary cooling nozzle of continuous casting hot performance test system structure synoptic diagram of an embodiment of the utility model;
Fig. 2 is the experimental stand structural representation of an embodiment of the utility model;
Fig. 3 is the signal processing and analysis system schematic of an embodiment of the utility model;
Among the figure: heating arrangement 1, test button 2, nozzle holder 3, nozzle transverse moving mechanism 4; Nozzle 5, injector spacing regulating device 6, nozzle clamping device 7, nozzle longitudinal moving mechanism 8; Experimental stand 9, temperature sensor 10, data acquisition unit 11, data analysis unit 12.
Embodiment
Below in conjunction with embodiment the utility model is described further, but does not limit the utility model.
This secondary cooling nozzle of continuous casting hot performance test macro comprises test button heating arrangement 1, experimental stand 9 and corresponding signal processing and analysis system.
Heating arrangement 1 is the rectangular parallelepiped worktable, and the upper surface is the heating table top, can be with placing the flat test button 2 on the heating table top to be heated to assigned temperature and uniformity of temperature profile, and the assurance heat transfer is conducted heat for the one dimension direction.Preferably, the size of used test button 2 requires processing to guarantee the one dimensional heat transfer condition according to the jeting area of nozzle 5.
Heating arrangement 1 is placed into test button 2 on the experimental stand 9 after test button 2 is heated.
Experimental stand 9 bottoms are the rectangular parallelepiped worktable, preferably the rectangular parallelepiped worktable of this rectangular parallelepiped worktable and heating arrangement 1 height such as grade and with wide, so that the transfer of test button 2 is moved.The inboard setting in the long limit nozzle holder 3 vertical of rectangular parallelepiped worktable upper surface with the upper surface; Nozzle transverse moving mechanism 4 and nozzle longitudinal moving mechanism 8 are set respectively on the nozzle holder; Nozzle 5 is fixed on the support body of nozzle holder 3 through nozzle clamping device 7, and can carry out laterally or vertically move through nozzle transverse moving mechanism 4 and nozzle longitudinal moving mechanism 8.The number of nozzle 5 is confirmed according to requirement of experiment, through nozzle transverse moving mechanism 4 and nozzle longitudinal moving mechanism 8, makes nozzle 5 just in time be positioned at test button 2 tops, and perpendicular to plane on the worktable.Preferably, injector spacing regulating device 6 is set on nozzle holder 3, can be according to the spacing between the on-the-spot practical adjustments nozzle 5.In the actual cooling procedure of simulation continuous casting, can carry out one-jet, also can carry out the hot performance test of a plurality of nozzles; Nozzle height is adjustable; Injector spacing is adjustable when carrying out the hot performance test of a plurality of nozzles, and test result is true and accurate more.
After being placed into test button 2 on the experimental stand 9, nozzle 5 begins test button 2 cooling of spraying water; The temperature sensor 10 of signal processing and analysis system is measured the temperature data of test button 2 each set point synchronously.
The signal processing and analysis system mainly comprises temperature sensor 10, data acquisition unit 11, data analysis unit 12.
Thus, this test macro is the simulated field actual production fully, and the test result accuracy is high, has meaning of crucial importance to instructing on-the-spot secondary cooling system.
The above disclosed preferred embodiment that is merely the utility model; Certainly can not limit the interest field of the utility model with this; Therefore the equivalence of being done according to the utility model claim changes, the protection domain that still belongs to the utility model like change that technological parameter or device are made and improvement.
Claims (8)
1. a secondary cooling nozzle of continuous casting hot performance test macro is characterized in that: comprise test button heating arrangement, experimental stand and corresponding signal processing and analysis system at least; Described heating arrangement is the rectangular parallelepiped worktable, and the upper surface is for can be heated to test button placed on it assigned temperature and uniformity of temperature profile, and guaranteeing to conduct heat is the heating table top of one dimension direction; Described experimental stand bottom is the rectangular parallelepiped worktable, on the rectangular parallelepiped worktable nozzle holder is set, and nozzle is fixed on the nozzle holder, and can move through the nozzle moving mechanism on the nozzle holder; Nozzle is unsettled to be positioned at above the test button, and is provided with perpendicular to the upper surface of experimental stand worktable; Described signal processing and analysis unit comprises temperature sensor, data acquisition unit, data analysis unit at least, and described temperature sensor is inserted in the test button, and is connected to data acquisition unit and data analysis unit in order through lead.
2. system according to claim 1; It is characterized in that: in the described experimental stand; The inboard setting in the long limit nozzle holder vertical of rectangular parallelepiped worktable upper surface, bottom with the upper surface; Nozzle transverse moving mechanism and nozzle longitudinal moving mechanism are set respectively on the nozzle holder, and nozzle is fixed on the support body of nozzle holder through the nozzle clamping device, and can carry out height and the adjustment of horizontal direction position through nozzle transverse moving mechanism and nozzle longitudinal moving mechanism.
3. system according to claim 1 and 2 is characterized in that: a plurality of nozzles are set on the described nozzle holder, and the number of nozzle is confirmed according to requirement of experiment.
4. system according to claim 3 is characterized in that: the injector spacing regulating device also is set on the described nozzle holder.
5. according to claim 1 or 2 or 4 described systems, it is characterized in that: described temperature sensor adopts how secondary thermopair, and said thermopair is inserted respectively in a plurality of test points in the test button; Many secondary thermopairs are wired to data acquisition unit respectively.
6. system according to claim 5 is characterized in that: described temperature sensor is inserted respectively in the test point of test button, and a plurality of temperature sensors are uniformly distributed with by many rows in a side of test button.
7. system according to claim 6 is characterized in that: the rectangular parallelepiped worktable height such as grade of said experimental stand bottom rectangular parallelepiped worktable and heating arrangement and with wide.
8. system according to claim 7; It is characterized in that: described data acquisition unit and data analysis unit are all mainly by setting acquisition time; Export the temperature of each test point; Calculate heat transfer coefficient and heat transfer coefficient the year time changing curve, return funtcional relationship between heat transfer coefficient and jet density, test button surface temperature, the cooling water temperature and the computing machine that shows formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203798918U CN202305189U (en) | 2011-09-28 | 2011-09-28 | System for testing hot performance of continuous casting secondary cooling nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203798918U CN202305189U (en) | 2011-09-28 | 2011-09-28 | System for testing hot performance of continuous casting secondary cooling nozzle |
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| Publication Number | Publication Date |
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| CN202305189U true CN202305189U (en) | 2012-07-04 |
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| CN2011203798918U Expired - Fee Related CN202305189U (en) | 2011-09-28 | 2011-09-28 | System for testing hot performance of continuous casting secondary cooling nozzle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313645A (en) * | 2011-09-28 | 2012-01-11 | 中冶南方工程技术有限公司 | Continuous-casting secondary-cooling nozzle-thermal-state performance test system |
| CN102980757A (en) * | 2012-11-20 | 2013-03-20 | 北京农业智能装备技术研究中心 | Device and method for automatically testing two-dimensional distribution of spraying |
| TWI571337B (en) * | 2015-05-21 | 2017-02-21 | China Steel Corp | Nozzle detection device |
| CN112517867A (en) * | 2020-11-27 | 2021-03-19 | 德龙钢铁有限公司 | Optimized arrangement method of flat nozzles for continuous casting |
-
2011
- 2011-09-28 CN CN2011203798918U patent/CN202305189U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313645A (en) * | 2011-09-28 | 2012-01-11 | 中冶南方工程技术有限公司 | Continuous-casting secondary-cooling nozzle-thermal-state performance test system |
| CN102980757A (en) * | 2012-11-20 | 2013-03-20 | 北京农业智能装备技术研究中心 | Device and method for automatically testing two-dimensional distribution of spraying |
| CN102980757B (en) * | 2012-11-20 | 2014-11-19 | 北京农业智能装备技术研究中心 | Device and method for automatically testing two-dimensional distribution of spraying |
| TWI571337B (en) * | 2015-05-21 | 2017-02-21 | China Steel Corp | Nozzle detection device |
| CN112517867A (en) * | 2020-11-27 | 2021-03-19 | 德龙钢铁有限公司 | Optimized arrangement method of flat nozzles for continuous casting |
| CN112517867B (en) * | 2020-11-27 | 2021-10-08 | 德龙钢铁有限公司 | Optimized arrangement method of flat nozzles for continuous casting |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20140928 |
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| EXPY | Termination of patent right or utility model |