METHOD FOR DRYING A CELLULOSE PULP WEB AND A CELLULOSE PULP DRYER COMPRISING AN INSPECTION DEVICE FOR INSPECTING THE POSITION OF THE WEB OR THE OCCURRENCE OF WEB RESIDUE
First Claim
1. A method of inspecting at least a first drying section of a gas blowing cellulose pulp dryer, the cellulose pulp dryer being operative for drying a web of cellulose pulp by means of blowing gas towards the web from gas outlets of blow boxes of the first drying section, wherein the method comprises inspecting the first drying section bydetecting radiation reflected from the first drying section by means of at least a first sensor, wherein the first sensor is chosen from a group of sensors comprising cameras, sensors for sensing reflected sweeping radiation, and sweeping sensors for reflected radiation;
- andanalysing, based on the detected reflected radiation, at least one of a position of the web during operation of the dryer, and the occurrence of any residue of the web.
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Accused Products
Abstract
A gas blowing cellulose pulp dryer is operative for drying a web of cellulose pulp using gas supplied from gas outlets of blow boxes of a first drying section. The cellulose pulp dryer has an inspection device with at least a first radiation sensor arranged to detect reflected radiation at the first drying section to detect at least one of a position of the web during operation of the dryer, and the occurrence of any residue of the web.
17 Citations
18 Claims
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1. A method of inspecting at least a first drying section of a gas blowing cellulose pulp dryer, the cellulose pulp dryer being operative for drying a web of cellulose pulp by means of blowing gas towards the web from gas outlets of blow boxes of the first drying section, wherein the method comprises inspecting the first drying section by
detecting radiation reflected from the first drying section by means of at least a first sensor, wherein the first sensor is chosen from a group of sensors comprising cameras, sensors for sensing reflected sweeping radiation, and sweeping sensors for reflected radiation; - and
analysing, based on the detected reflected radiation, at least one of a position of the web during operation of the dryer, and the occurrence of any residue of the web. - View Dependent Claims (2, 3, 4, 5, 6)
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- 7. A gas blowing cellulose pulp dryer being operative for drying a web of cellulose pulp by means of gas supplied from gas outlets of blow boxes of a first drying section, wherein the cellulose pulp dryer comprises an inspection device having at least a first radiation sensor which is chosen from a group of sensors comprising cameras, sensors for sensing reflected sweeping radiation, and sweeping sensors for reflected radiation, wherein said first radiation sensor is arranged to detect reflected radiation at the first drying section to detect at least one of a position of the web during operation of the dryer, and the occurrence of any residue of the web.
Specification