发明名称 |
METHOD AND APPARATUS FOR CONTROLLING THE OPERATION OF THE SHORT CIRCULATION OF A PAPER, PAPERBOARD OR THE LIKE PRODUCTION MACHINE |
摘要 |
The present invention relates to a method of and an apparatus for controlling the operation of the short circulation of a paper, paper board or the like production machine. The method and apparatus according to the invention are especially preferably suitable for use in the approach system, i.e. so-called short circulation, of said production machines for regulating the headbox feed pressure. A characteristic feature of the method and apparatus according to the invention is that at a suitable location in the approach system of said production machine there is arranged a controllable parallel flow, by means of which at least one flow in the approach system is regulated so that the pressure in the headbox remains essentially constant.
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申请公布号 |
WO0146521(A1) |
申请公布日期 |
2001.06.28 |
申请号 |
WO2000FI01100 |
申请日期 |
2000.12.15 |
申请人 |
ANDRITZ-AHLSTROM OY;BJOERKSTEDT, LASSE;MATULA, JOUNI |
发明人 |
BJOERKSTEDT, LASSE;MATULA, JOUNI |
分类号 |
D21F1/06;D21F1/66;(IPC1-7):D21F1/06 |
主分类号 |
D21F1/06 |
代理机构 |
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