论文部分内容阅读
3150纸机是我国制造的生产新闻纸的大型纸机。其主要部分有:抄纸、烘干、压光、卷曲等。纸浆通过高位箱的给料阀门进入纸机,纸中的水份通过各级烘缸被逐渐排除,而烘缸的热量是由过热蒸汽供给的。所以控制送料阀门和蒸汽阀门是控制纸张定量、水份的重要环节。在送料阀门不变的情况下,纸浆的浓度变化或纸机车速变化都使纸张的定量改变,同时也影响水份的变化。一般烘缸的气压可以代表全体烘缸的温度,温度的变化也影响水份和定量的变化。当然,实际上影响纸的产量和质量有许多因素,但实践证明对纸的定量、水份、
The 3150 paper machine is a large paper machine made in China that produces newsprint. The main part is: papermaking, drying, calendering, curling and so on. The pulp enters the paper machine through the feed valve in the high tank and the moisture in the paper is gradually removed by the dryer at all stages, whereas the heat from the dryer is supplied by the superheated steam. Therefore, control of feed valve and steam valve is to control the paper quantitative, an important part of water. In the case of the same feeding valve, the changes in the concentration of pulp or paper machine speed changes in the paper quantitative changes, but also affect the water changes. The pressure of a typical dryer can represent the temperature of the entire dryer. Changes in temperature also affect the moisture and the quantitative changes. Of course, there are many factors that actually affect the yield and quality of paper, but practice has proved that the quantitative, moisture,