Patent
Method and device for blowing gas on a running strip
| العنوان: | Method and device for blowing gas on a running strip |
|---|---|
| Patent Number: | 8,591,675 |
| تاريخ النشر: | November 26, 2013 |
| Appl. No: | 12/594773 |
| Application Filed: | October 21, 2008 |
| مستخلص: | The present invention relates to a method for acting on the temperature of a travelling strip (4) by blowing gas or a water/gas mixture, whereby a plurality of jets of gas or a water/gas mixture, extending toward the surface of the strip and arranged in such a way that the impacts (24, 34) of the jets of gas or water/gas mixture on each surface of the strip are distributed at the nodes of a two-dimensional network, are sprayed onto each face of the strip. The impacts (24) of the jets on one face (A) are not opposite the impacts (34) of the jets on the other face (B), and the jets of gas or water/gas mixture come from tubular nozzles (23, 33) which are supplied by at least one distribution chamber (21, 31) and extend at a distance from the distribution chamber in such a way as to leave a free space for the flow of the returning gas or water/gas mixture parallel to the longitudinal direction of the strip and perpendicular to the longitudinal direction of the strip. |
| Inventors: | Muller, Jerome (Courcelles Chaussy, FR); Elias, Akli (Metz, FR); Petesch, Thierry (Hayange, FR); Santi, Ivan (Auboue, FR); Durighello, Paul (Thionville, FR); Beaujard, Karen (Metz, FR) |
| Assignees: | ArcelorMittal France (Saint Denis, FR) |
| Claim: | 1. Method for acting on the temperature of a travelling strip by blowing gas or a water/gas mixture, whereby a plurality of jets of gas or a water/gas mixture, extending towards the surface of the strip and arranged in such a way that the impacts of the jets of gas or water/gas mixture on each surface of the strip are distributed at the nodes of a two-dimensional network, are sprayed onto each face of the strip, wherein, in order to reduce the vibrations of the strip which are induced by the blowing of gas or a gas/water mixture, the jets of gas or water/gas mixture come from tubular nozzles which are supplied by at least one distribution chamber and the heads of which extend at a distance from the distribution chamber in such a way as to leave a free space for the flow of the returning gas or water/gas mixture parallel to the longitudinal direction of the strip and perpendicular to the longitudinal direction of the strip and the impacts of the jets on one face of the strip are not opposite the impacts of the jets on the other face of the strip. |
| Claim: | 2. Method according to claim 1 , wherein the jets of gas or of water/gas mixture are perpendicular to the surface of the strip. |
| Claim: | 3. Method according to claim 1 , wherein the axis of at least one jet of gas or of water/gas mixture forms a non-zero angle with the normal to the surface of the strip. |
| Claim: | 4. Method according to claim 1 , wherein the two-dimensional distribution networks of the jet impacts on each of the faces of the strip are periodic, are based on the same pattern and have the same pitch. |
| Claim: | 5. Method according to claim 4 , wherein the pattern of the network is hexagonal. |
| Claim: | 6. Method according to claim 1 , wherein the impacts of the jets on a single face of the strip are distributed at the nodes of the two-dimensional network so as to form a complex polygonal mesh with a number of sides varying from 3 to 20, with a periodicity equal to 1 pitch in the transverse direction of the strip and between 3 and 20 pitches in the longitudinal direction of the strip, in such a way that two adjacent impact traces of the blow-jets for one face of the strip are contiguous in the transverse direction of said strip. |
| Claim: | 7. Method according to claim 4 , wherein the network corresponding to one face and the network corresponding to the other face are offset from one another, and in that the offset is between ¼ of a pitch and ¾ of a pitch. |
| Claim: | 8. Method according to claim 1 , wherein the gas is a cooling gas having a temperature lower than a temperature of the strip. |
| Claim: | 9. Method according to claim 1 , wherein the gas is a hot gas intended for heating the strip. |
| Claim: | 10. Method according to claim 1 , wherein the length of the nozzles is between 20 and 200 mm. |
| Current U.S. Class: | 148/661 |
| Patent References Cited: | 4448614 May 1984 Morimoto et al. 5871686 February 1999 Nivoche 5885382 March 1999 Sakurai et al. 6309483 October 2001 Wang et al. 2006/0060271 March 2006 Fujibayashi et al. 2007/0241485 October 2007 Boyer et al. 0 761 829 March 1997 1 067 204 January 2001 1 527 829 May 2005 1935522 June 2008 2 876 710 April 2006 7-234070 September 1995 11-285723 October 1999 2004269930 September 2004 2006-205225 August 2006 2007/026906 March 2007 WO 2007/055403 May 2007 |
| Other References: | English Language translation of JP 2004-269930 A Sep. 2004. cited by examiner |
| Primary Examiner: | Kastler, Scott |
| Attorney, Agent or Firm: | Sughrue Mion, PLLC |
| رقم الانضمام: | edspgr.08591675 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |