A DEVICE FOR THE REMOVAL OF A POWDERY SUBSTANCE ACCUMULATING IN A TUBULAR BACK PORTION OF AN OPTICAL FIBER PREFORM DURING THE MANUFACTURE THEREOF
    2.
    发明申请
    A DEVICE FOR THE REMOVAL OF A POWDERY SUBSTANCE ACCUMULATING IN A TUBULAR BACK PORTION OF AN OPTICAL FIBER PREFORM DURING THE MANUFACTURE THEREOF 审中-公开
    一种用于在其制造过程中去除光纤预制件的管状背部中的粉末物质累积的装置

    公开(公告)号:WO1989002419A1

    公开(公告)日:1989-03-23

    申请号:PCT/FI1988000145

    申请日:1988-09-12

    Inventor: OY NOKIA AB

    CPC classification number: C03B37/01846

    Abstract: This invention relates to a device for removing a powdery substance accumulating in a tubular back portion (2) of an optical fiber preform (1) during the manufacture thereof, comprising a screw structure (3) following the inner surface of said tubular back portion (2). In order to provide an efficient removal structure which does not affect the preform mechanically or in any other way, the screw structure (3) according to the invention comprises a gas conduit (4) provided with orifices (5) opening towards the open end of the tubular back portion (2). Preferably the structure is a pipe (3) wound in the form of a spiral.

    Abstract translation: 本发明涉及一种用于除去在其制造过程中聚集在光纤预制棒(1)的管状后部(2)中的粉末状物质的装置,包括:螺旋结构(3),其沿着所述管状后部的内表面 2)。 为了提供一种不会机械地或以任何其他方式影响预制件的有效的移除结构,根据本发明的螺旋结构(3)包括气体导管(4),其设置有朝向开口端开口的孔口(5) 管状后部(2)。 优选地,结构是以螺旋形式缠绕的管道(3)。

    LOW PERMEABILITY GAS RECYCLING IN CONSOLIDATION
    3.
    发明申请
    LOW PERMEABILITY GAS RECYCLING IN CONSOLIDATION 审中-公开
    低渗透性气体循环在综合

    公开(公告)号:WO2009157979A1

    公开(公告)日:2009-12-30

    申请号:PCT/US2009/003662

    申请日:2009-06-18

    Abstract: Methods for recycling a low permeability gas such as krypton in the consolidation process of optical fiber manufacturing. The low permeability gas is sent to a purification unit or plant before being reutilized in the consolidation process. The low permeability gas can be used to produce holes or voids in a cladding region of an optical fiber preform. Upon drawing the optical preform into an optical fiber, the voids become elongated in the direction of draw.

    Abstract translation: 在光纤制造固结过程中循环利用氪气等低渗透气体的方法。 在固化过程中再利用低渗透气体之前将其送入净化单元或设备。 低透气性气体可以用于在光纤预制件的包层区域中产生孔或空隙。 在将光学预制件拉制成光纤时,空隙在拉伸方向上变细。

    光ファイバ母材を製造する方法および装置
    4.
    发明申请
    光ファイバ母材を製造する方法および装置 审中-公开
    用于生产光纤矩阵的方法和装置

    公开(公告)号:WO2005082798A1

    公开(公告)日:2005-09-09

    申请号:PCT/JP2005/002874

    申请日:2005-02-23

    CPC classification number: C03B37/01861 C03B37/01807 C03B37/01846 Y02P40/57

    Abstract:  石英パイプの収縮のばらつきを抑え長手方向に一様な光ファイバ母材を製造できる方法と装置を提供する。この方法では、石英パイプにガラス層を堆積させる工程において、石英パイプには排気部またはバッファガス導入部が合計で二つ以上接続され、排気部からの排気ガス量またはバッファガス導入部への導入ガス量の少なくとも一つがフィードバック制御され、他の少なくとも一つが石英パイプ上の加熱位置に応じた流量パターンに従ってパターン制御される。この装置は、原料ガス供給系と、合計二つ以上の排気部またはバッファガス導入部と、熱源と、石英パイプ上の加熱位置を検出する位置検出手段と、加熱位置に応じた流量パターンに従って排気部からの排気ガス量またはバッファガス導入部への導入ガス量の少なくとも一つを制御する第1の制御手段と、他の少なくとも一つをフィードバック制御する第2の制御手段とを有する。

    Abstract translation: 一种用于在抑制石英管的收缩变化的同时在其长度方向上同时生产光纤基体的方法和装置。 在石英管上沉积玻璃层的步骤中,石英管连接两个或多个排气部分或缓冲气体导入部分,至少来自排气部分的废气量或引入到 缓冲气体引入部分是反馈控制的,并且至少另一个根据根据石英管上的加热位置的流动模式进行图案控制。 该装置包括一个材料气体供应系统,两个或多个排气部分或缓冲气体导入部分,热源,位置检测装置,用于检测石英管上的加热位置;第一控制装置,用于控制至少一个量 根据根据加热位置或引入到缓冲气体导入部的气体的量的流动图形,来自排气部的排气的排气,以及至少另一方反馈控制的第二控制单元。

    METHODS FOR THE SEPARATION OF COMPOUNDS FROM ACIDIC AQUEOUS SOLUTIONS
    5.
    发明申请
    METHODS FOR THE SEPARATION OF COMPOUNDS FROM ACIDIC AQUEOUS SOLUTIONS 审中-公开
    从酸性溶液中分离化合物的方法

    公开(公告)号:WO01005720A1

    公开(公告)日:2001-01-25

    申请号:PCT/US2000/016950

    申请日:2000-06-20

    Abstract: A method is disclosed for recovering germanium from a gaseous mixture which includes a germanium-containing compound in vapor or particulate form, acid in vapor form, and water vapor. The gaseous mixture is contacted with a liquid containing water under conditions effective to dissolve the germanium-containing compound in the liquid. The acidity of the resulting liquid mixture is increased under conditions effective to vaporize the germanium-containing compound. The vaporized germanium-containing compound is contacted with one or more aqueous solutions under conditions effective to dissolve and precipitate the germanium-containing compound in at least one of the one or more aqueous solutions, and the resulting precipitate is separated from the at least one of the one or more aqueous solutions. The methods described herein are particularly well suited for recovering germanium from the waste gases produced during optical waveguide manufacturing processes. Germanium recovered by this method can thereafter be used in the production of semiconductors, optical waveguide fibers and optical components.

    Abstract translation: 公开了一种用于从气体混合物中回收锗的方法,所述气体混合物包括蒸气或颗粒形式的含锗化合物,蒸汽形式的含酸化合物和水蒸气。 在有效溶解含锗化合物的液体中的条件下,气态混合物与含有液体的液体接触。 所得液体混合物的酸度在有效蒸发含锗化合物的条件下增加。 蒸发的含锗化合物在有效溶解和沉淀至少一种一种或多种水溶液中的含锗化合物的条件下与一种或多种水溶液接触,并将所得沉淀物从至少一种 一种或多种水溶液。 本文描述的方法特别适用于从光波导制造过程中产生的废气中回收锗。 然后通过该方法回收的锗可以用于半导体,光波导纤维和光学部件的制造。

    METHODS OF AND APPARATUS FOR RECOVERING A CONSTITUENT OF A PROCESS EFFLUENT
    7.
    发明申请
    METHODS OF AND APPARATUS FOR RECOVERING A CONSTITUENT OF A PROCESS EFFLUENT 审中-公开
    用于恢复过程流程的方法和装置

    公开(公告)号:WO1985003456A1

    公开(公告)日:1985-08-15

    申请号:PCT/US1985000053

    申请日:1985-01-10

    Abstract: Process of recovering a constituent of a process effluent, such as an effluent of a process for making a preform from which an optical fiber is drawn. The effluent is directed into a scrubber (40) of a loop (20) where it is treated with an aqueous solution to provide a solvent mixture which comprises particulates and a solvent solution including the constituent, e.g., germanium. Subsequently, the solvent mixture is moved into a first filter system (55) which provides a filtrate free of particulates above a first size that is returned to the scrubber for reuse and a residue. Then the residue from the first filter system is moved into a second filter system (80) which provides a filtrate free of particulates larger than a second size that is smaller than the first size and a residue. The filtrate from the second filter system also is returned to the scrubber for reuse while the residue from the second filter system is recirculated therethrough. When the constituent, e.g., germanium, concentration reaches a predetermined level, portions of the residue from the second filter system are withdrawn and subsequently treated with a precipitating agent to recover the constituent, e.g., germanium.

    Abstract translation: 回收过程流出物的组分的方法,例如用于制造预先形成光纤的预成型体的流程的流出物。 将流出物引入环(20)的洗涤器(40)中,其中用水溶液处理,以提供包含微粒和包含成分例如锗的溶剂溶液的溶剂混合物。 随后,将溶剂混合物移入第一过滤系统(55),该第一过滤器系统(55)提供不含高于第一大小的微粒的滤液,其返回到洗涤器中用于再利用和残留。 然后将来自第一过滤系统的残余物移入第二过滤器系统(80),其提供不含比第一尺寸小的第二尺寸的颗粒的滤液和残余物。 来自第二过滤器系统的滤液也被返回到洗涤器中以便重新使用,而来自第二过滤器系统的残余物通过其再循环。 当组分(例如锗)浓度达到预定水平时,来自第二过滤器系统的残余物的部分被取出,随后用沉淀剂处理以回收成分,例如锗。

Patent Agency Ranking