Invention Grant
US07986410B2 Method for detecting a fibrous web tear in a drying section of a machine for producing the fibrous web and apparatus for performing said method
失效
用于检测用于生产纤维幅材的机器的干燥部分中的纤维网撕裂的方法和用于执行所述方法的装置
- Patent Title: Method for detecting a fibrous web tear in a drying section of a machine for producing the fibrous web and apparatus for performing said method
- Patent Title (中): 用于检测用于生产纤维幅材的机器的干燥部分中的纤维网撕裂的方法和用于执行所述方法的装置
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Application No.: US12050621Application Date: 2008-03-18
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Publication No.: US07986410B2Publication Date: 2011-07-26
- Inventor: Armin Bauer , Dietmar Üblacker
- Applicant: Armin Bauer , Dietmar Üblacker
- Applicant Address: DE Heidenheim
- Assignee: Voith Patent GmbH
- Current Assignee: Voith Patent GmbH
- Current Assignee Address: DE Heidenheim
- Agency: Taylor IP, PC
- Main IPC: G01N21/84
- IPC: G01N21/84
Abstract:
This invention relates to a method for detecting a tear in a fibrous web in a drying section of a machine for producing the fibrous web, whereby the fibrous web is passed through the drying section by way of at least one dryer fabric, whereby the tear is detected by at least one optical web tear detection device, which includes at least one luminous source and one detector, and whereby a cut-off apparatus for the fibrous web is directly or indirectly activated by the web tear detection device. The optical web tear detection device is operated over an extended wave length range in order to detect a tear in the fibrous web reliably. In addition, the invention relates to an apparatus for performing the inventive method.
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