| 摘要 |
The invention is directed to a device for straightening a stream of a cooling medium for cooling a roll or a metal strip. This device comprise a hollow body, extending over at least part of the width of the roll or the metal strip, and a tube, arranged in the hollow body and extending in the direction of the width of the roll or the metal strip, wherein the hollow body is divided in the direction of the width of the roll or the metal strip into a number of chambers, and the tube comprises openings for introducing cooling medium into the chambers of the hollow body, and the chambers respectively comprise an opening for the flowing out of cooling medium from the hollow body. Furthermore, according to the invention the chambers, respectively, comprise a channel, formed between the inner wall of the hollow body and the tube, for conducting cooling medium from the openings of the tube to the opening for the outflow of cooling medium from the hollow body, wherein the flow cross-section of the channel narrows art least at its downstream end. |
| 主权项 |
1. A device (1, 10, 11, 111) for straightening a cooling medium stream for cooling a roll (2) or a metal strip (20), comprising:
a hollow body (3, 30, 33) extending at least over a portion of a width of the roll (2) or the metal strip (20); a tube (5, 50, 55) located in the hollow body (3, 30, 33) and extending in a width direction (B) of the roll (2) or the metal strip (20), wherein the hollow body (3, 30, 33) is divided in several chambers (7) in the width direction (B) of the roll (2) or the metal strip (20), and the tube (5, 50, 55) has openings (9, 90, 99) for feeding the cooling medium from the tube (5, 50, 55) in the chambers (7) of the hollow body (3, 30, 33), and the chambers (7) each has an opening (8, 80, 88) for outflow of the cooling medium from the hollow body (3, 30, 33), wherein the openings (9, 90, 99) of the tube (5, 50, 55) are provided essentially opposite the openings (8, 80, 88) for outflow of the cooling medium, wherein the chambers (7) are separated one from another by a respective separation wall (14) that separates a hollow space of the hollow body (3, 30, 33) in the width direction (B), while providing for flow of the cooling medium through the tube (5, 50, 55) to the chambers (7), and wherein the chambers (7) each have a channel (12, 22, 222) formed between an inner wall of the hollow body (3, 30, 33) and the tube (5, 50, 55) for conducting the cooling medium from the openings (9, 90, 99) of the tube (5) into partial cooling medium streams that flow around the tube (5, 50, 55) to the openings (8, 80, 88) for outflow of the cooling medium from the hollow body (3, 30, 33) where the partial streams are combined into a common cooling medium stream adjacent to a side of the tube (5, 50, 55) opposite the openings (9, 90, 99) of the tube (5, 50, 55), and a cross-section of the channel (12, 22, 222) continuously narrows for at least half of the length of the channel in a direction of the flow of the cooling medium up to a downstream end thereof where the partial cooling medium streams are combined into the common cooling medium stream. |
