US 11,745,237 B2
Cooling unit of a laminar cooling device
Johannes Alken, Siegen (DE); Henning Berg, Kreuztal (DE); Jens Kiessling-Romanus, Siegen (DE); and August Sprock, Düsseldorf (DE)
Assigned to SMS GROUP GMBH, Düsseldorf (DE)
Appl. No. 16/980,699
Filed by SMS GROUP GMBH, Düsseldorf (DE)
PCT Filed Feb. 7, 2019, PCT No. PCT/EP2019/053000
§ 371(c)(1), (2) Date Sep. 14, 2020,
PCT Pub. No. WO2019/174826, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 10 2018 203 640.3 (DE), filed on Mar. 12, 2018; and application No. 10 2018 219 276.6 (DE), filed on Nov. 12, 2018.
Prior Publication US 2021/0379637 A1, Dec. 9, 2021
Int. Cl. B21B 15/02 (2006.01); G05D 7/06 (2006.01); B21B 45/02 (2006.01)
CPC B21B 45/0218 (2013.01) [B21B 45/0233 (2013.01); G05D 7/0623 (2013.01); G05D 7/0652 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A cooling group for a laminar cooling apparatus arrangeable above and below a strip to be cooled in order to apply a cooling liquid to the strip, comprising:
a central inflow via which the cooling liquid is supplied;
a distributor tube that is supplied with the cooling liquid from the central inflow;
a number of application units that are supplied with the cooling liquid from the distributor tube;
a number of cooling nozzles arranged on each of the application units for applying the cooling liquid to the strip;
a volume flow-regulating valve arranged in or in front of the central inflow and configured so as to conduct a defined, variable volume of the cooling liquid through the central inflow per unit of time, wherein setting of the volume flow-regulating valve is determined from a relationship
Qtarget=Σi=1nQtarget(4.n),
where
Qtarget is a total target volume flow rate, and
Qtarget(4.n) is a target partial volume flow rate in the individual application units; and
a closed loop control system configured to continuously regulate the target volume flow (Qtarget) by changing the setting of the volume flow regulating valve, wherein the closed loop control system includes a throughflow meter for measuring the through flow through the central inflow, and a comparator configured to compare a measured actual value with the target value of the volume flow rate.