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    • 2. 发明申请
    • METHOD FOR MINIMIZING TENSION VARIATION IN A PAPER WEB INDUCED BY DRYING OF THE WEB IN A PAPER MACHINE
    • 纸张干纸引起的纸张张力变化最小化方法
    • WO02029156A1
    • 2002-04-11
    • PCT/FI2001/000855
    • 2001-10-01
    • D21F5/00D21F7/00D21G9/00
    • D21G9/0036D21F5/00D21F7/003Y10S162/06
    • The invention relates to a method for minimizing tension variation in a paper web induced by drying of the web in a paper machine. Tension variations in the paper web are caused by successive draws and moisture fluctuations. Good strength properties require optimization of the draws. In addition, the tension variation induced by moisture must be minimized. The analysis of local modulus and the strain components can be used for determining optimal locations for profiling actuators in order to achieve good tension profile. In the method according to the invention, longitudinal strain components of the web, i.e. reversible elastic strain, permanent plastic strain and frozen-in strain relievable with water are continuously measured and determined and the variation of said longitudinal components is minimized by correcting the moisture content of the paper web in a dryer section of the paper machine and/or by optimizing the draws between dryer groups in the dryer section.
    • 本发明涉及一种通过在造纸机中干燥纸幅而引起的纸幅中的张力变化最小化的方法。 纸幅中的张力变化是由连续绘制和水分波动引起的。 良好的强度属性需要优化绘图。 此外,由水分引起的张力变化必须最小化。 局部模量和应变分量的分析可用于确定成型致动器的最佳位置,以获得良好的张力分布。 在根据本发明的方法中,连续测量和确定幅材的纵向应变分量,即可逆弹性应变,永久塑性应变和可用水释放的冷冻应变,并且通过校正水分含量来最小化所述纵向分量的变化 的纸幅在造纸机的干燥器部分中和/或通过优化干燥器部分中的干燥器组之间的牵引。
    • 3. 发明申请
    • ELECTROMAGNETIC FIELD PERTURBATION SENSOR AND METHODS FOR MEASURING WATER CONTENT IN SHEETMAKING SYSTEMS
    • 电磁场感应传感器及测量系统中水含量的方法
    • WO1998026282A1
    • 1998-06-18
    • PCT/US1997022917
    • 1997-12-12
    • HONEYWELL-MEASUREX CORPORATION
    • HONEYWELL-MEASUREX CORPORATIONCHASE, LeeGOSS, JohnWALFORD, Graham, V.
    • G01N33/34
    • G01N33/343D21H23/08G01G9/00Y10S162/06Y10S162/11
    • An apparatus for sensing three properties of materials: the conductivity or resistance, the dielectric constant, and the proximity of the material to the sensor portion of the apparatus. The apparatus includes a fixed impedance element coupled in series with the sensor portion of the apparatus between an input signal and ground. The sensor portion of the apparatus is an electrode configuration which includes at least two electrodes with a portion of the material residing between and in close proximity to the electrodes. The sensor exhibits a variable impedance resulting from changes in physical characteristics of the material. The fixed impedance element and the variable impedance of the sensor portion form a voltage divider network such that changes in impedance of the sensor portion result in changes in voltage on the output of the apparatus. The variable impendance of the sensor portion relates to changes in property of the material being sensed which can then be related to changes in other physical characteristics of the material such as weight, chemical composition, and temperature.
    • 用于感测材料的三种性质的装置:电导率或电阻,介电常数以及材料与装置的传感器部分的接近程度。 该装置包括与输入信号和地之间的装置的传感器部分串联耦合的固定阻抗元件。 设备的传感器部分是电极配置,其包括至少两个电极,其中一部分材料驻留在电极之间并且非常接近电极。 传感器表现出由材料的物理特性变化引起的可变阻抗。 传感器部分的固定阻抗元件和可变阻抗形成分压网络,使得传感器部分的阻抗变化导致设备输出端的电压变化。 传感器部分的可变阻力涉及被感测材料的性质变化,其随后可能与材料的其它物理特性的变化(例如重量,化学成分和温度)有关。
    • 5. 发明申请
    • METHOD FOR REGULATION OF THE BASIS WEIGHT OF PAPER OR BOARD IN A PAPER OR BOARD MACHINE
    • 纸张或纸板机中纸张或纸板基重的调节方法
    • WO99064665A1
    • 1999-12-16
    • PCT/FI1999/000485
    • 1999-06-04
    • D21F1/06D21F1/08D21G9/00D21F1/00D21F7/06
    • D21G9/0027D21F1/06D21F1/08Y10S162/06
    • A method for regulation of the basis weight of paper or board in a paper or board machine in which the machine stock (MT) is composed of a number of component stocks (Mi) and in which the basis weight of the dry paper or board is measured by means of on-line basis-weight measurement at the end of the machine. In the method, first, based on the stock target (Q0) of the machine stock (MT) formed on the basis of basis-weight regulation and based on the predetermined stock proportions (KQi) of the component stocks, a metering target (QiT) is computed for each component stock (Mi). After this, based on the consistency (Csi) of a component stock (Mi) measured from each feed line (23i) of a component stock (Mi) and on the metering target (QiT) computed for each component stock (Mi), a flow target (FiT) is computed for each component stock (Mi). Finally, the flow of each component stock (Mi) is regualted based on the flow target (FiT) computed for each component stock (Mi).
    • 一种用于调节纸或纸机的纸或纸板的基重的方法,其中机器原料(MT)由许多成分原料(Mi)组成,其中干纸或纸板的基重为 通过在机器末端的在线基重测量来测量。 在该方法中,首先,基于基于基重调节形成的机器库存(MT)的库存目标(Q0),并且基于部件库存的预定库存比例(KQi),计量目标(QiT )计算每个成分原料(Mi)。 之后,基于从各成分原料(Mi)的各供给线(23i)和对各成分原料(Mi)计算出的计量对象(QiT)测定的成分原料(Mi)的一致性(Csi),a 针对每个组件库存(Mi)计算流量目标(FiT)。 最后,基于为每个成分存量(Mi)计算的流动目标(FiT)来调节每个成分原料(Mi)的流动。
    • 6. 发明申请
    • HIGH RESOLUTION SYSTEM AND METHOD FOR SHEET MEASUREMENT OF TRAVEL WEB
    • 高分辨率系统和旅行网页测量方法
    • WO99014607A2
    • 1999-03-25
    • PCT/US1998/008401
    • 1998-04-29
    • D21H23/08G01G9/00G01N27/02G01N27/04G01N27/22G01N33/34G01R27/26
    • D21H23/08G01G9/00G01N33/343Y10S162/06Y10S162/11
    • A system and method that combine an array of fast under wire water weight sensors with a scanning system provide an accurate measurement of the entire sheet down to 1 in. by 1 in. resolution. Because CD profiles are obtained instantaneously, MD and CD variations are completely decoupled, even if CD profiles are taken at longer intervals apart. The technique allows monitoring the basis weight of a sheet of material that is formed in a process that employs a dewatering machine that includes a water permeable moving fabric supporting wet stock and a dry end which technique includes the steps of: (a) positioning an array of water weight sensor elements (array) underneath and adjacent to the fabric wherein the array is positioned in a cross direction to the moving fabric; (b) positioning a scanning sensor at the dry end to measure the dry basis weight of the sheet of material; (c) operating the machine and measuring the water weights of the sheet of material with the array and measuring the dry basis weight of the sheet of material with the scanning sensor at the dry end; (d) developing a functional relationship between water weight of the sheet as measured by the array and the basis weight of the sheet which is formed after being substantially de-watered; and (e) periodically adjusting the functional relationship using readings from the scanning sensor to compensate for variations due to process parameters. The technique can further include the step of correlating positional readings of the scanning sensor with measurements from the corresponding element in the array to obtain separate calibration for each individual element of the array and step (e) comprises adjusting the functional relationship obtained in step (d) and the calibration obtained in to compensate for variations due to process parameters.
    • 将快速下线水重传感器阵列与扫描系统相结合的系统和方法可以将整个片材的精确测量精确到1英寸×1英寸分辨率。 由于CD配置文件被即时获得,所以MD和CD的变化是完全解耦的,即使以更长的间隔分开进行CD配置文件。 该技术允许监测在采用脱水机的过程中形成的一片材料的基重,该脱水机包括支撑湿料的透水移动织物和干端,该技术包括以下步骤:(a)将阵列 的水重量传感器元件(阵列)在织物下方并与织物相邻,其中阵列沿着与移动织物交叉的方向定位; (b)将扫描传感器定位在干燥端以测量材料片的干基重量; (c)操作机器并用阵列测量材料片的水重,并用扫描传感器在干燥末端测量材料片的干基重量; (d)通过阵列测量的片材的水重与在基本上脱水后形成的片材的基重之间发展功能关系; 和(e)使用来自扫描传感器的读数周期性地调整功能关系,以补偿由于工艺参数引起的变化。 该技术可以进一步包括将扫描传感器的位置读数与来自阵列中的相应元件的测量值相关的步骤,以获得阵列的每个单独元件的单独校准,步骤(e)包括调整步骤(d)中获得的功能关系 )和获得的校准以补偿由于工艺参数引起的变化。
    • 7. 发明申请
    • METHOD AND SYSTEM FOR CONTROLLING HEADBOX IN A PAPER/BOARD MACHINE
    • 纸板机控制方法及系统
    • WO01049929A1
    • 2001-07-12
    • PCT/FI2000/001164
    • 2000-12-29
    • D21F1/02D21F1/06
    • D21F1/02D21F1/06Y10S162/06
    • The invention relates to a method and a system for controlling a headbox in a paper/board machine. The headbox (10) comprises a stock inlet header (J), a tube bank (11), a turbulence generator (13) and a slice opening (14) which is provided with a profile bar. The headbox (10) is provided with cross direction measuring sensors (D1, D2; Dmn), by means of which the flow rate profile of the headbox (10) is determined, and the profile bar of the slice opening (14) of the headbox (10) is adjusted in the cross direction on the basis of the thus determined flow rate profile. According to the system of the invention, the headbox (10) is provided with measuring sensors (D1, D2; Dmn) for determining the cross direction flow rate profile of the headbox (10) and with means for adjusting the profile bar on the basis of the flow rate profile.
    • 本发明涉及一种用于控制纸/纸机器中的流浆箱的方法和系统。 流浆箱(10)包括储存入口集管(J),管堤(11),湍流发生器(13)和设有型材条的切片开口(14)。 流浆箱(10)设置有横向测量传感器(D1,D2; Dmn),通过该流量计确定流浆箱(10)的流量分布,并且确定了流浆箱(10)的切片开口(14)的轮廓条 基于如此确定的流量曲线,在横向上调节流浆箱(10)。 根据本发明的系统,流浆箱(10)设置有用于确定流浆箱(10)的横向流量分布的测量传感器(D1,D2; Dmn)和用于在基础上调节轮廓杆的装置 的流量曲线。