MCVD method of making a low OH fiber preform with a hydrogen-free heat
source
    1.
    发明授权
    MCVD method of making a low OH fiber preform with a hydrogen-free heat source 失效
    用无氢热源制造低OH纤维预制件的MCVD方法

    公开(公告)号:US5397372A

    公开(公告)日:1995-03-14

    申请号:US159179

    申请日:1993-11-30

    IPC分类号: G02B6/00 C03B37/018

    摘要: A method for making a glass preform substantially free of OH impurities is disclosed. The method comprises the steps of introducing a moving stream of a vapor mixture including at least one compound glass-forming precursor together with an oxidizing medium into a tube, while generating a hydrogen-free isothermal plasma on an outer surface of the tube to react the mixture and produce a glassy deposit on an inner surface of the tube. The method uses a plasma torch or a radio frequency furnace.

    摘要翻译: 公开了一种制造基本上不含OH杂质的玻璃预制件的方法。 该方法包括以下步骤:将包含至少一种复合玻璃形成前体的蒸汽混合物的移动流与氧化介质一起引入管中,同时在管的外表面上产生无氢等温等离子体,以使反应 混合并在管的内表面上产生玻璃状沉积物。 该方法使用等离子体焰炬或射频炉。

    Non-contacting seal for treating chamber through which elongated
material is moved
    2.
    发明授权
    Non-contacting seal for treating chamber through which elongated material is moved 失效
    用于处理室的非接触式密封件,细长材料通过该密封件移动

    公开(公告)号:US4174842A

    公开(公告)日:1979-11-20

    申请号:US892223

    申请日:1978-03-31

    申请人: Fred P. Partus

    发明人: Fred P. Partus

    摘要: A device (80) for sealing a furnace (50) which is used to draw a fiber (52) from a rod-like preform (51) includes a housing (82) having a cavity (121) for receiving a disc (111). The disc (111) is suspended for movement in the cavity in a plane lateral to the preform that extends through a center opening (116) in the disc and into the furnace. An inert gas is supplied to the cavity and directed inwardly through radially disposed passageways (118--118) in the disc (111) to impinge on the preform and split into two streams which move along the preform in opposite directions to prevent the entry of ambient air into, as well as the escape of gas from within, the furnace. The inert gas also causes the disc to be moved within the cavity to compensate for irregularities in the preform or for its misalignment from a vertical axis of the furnace, and provides a cushion so that contact between the disc and the preform is avoided.

    摘要翻译: 一种用于密封用于从杆状预成型件(51)中拉出纤维(52)的炉(50)的装置(80)包括具有用于接纳盘(111)的空腔(121)的壳体(82) 。 盘(111)悬挂在空腔中,在预制件的横向方向上延伸穿过盘中的中心开口(116)并进入炉中。 惰性气体被供应到空腔并且通过盘(111)中的径向设置的通道(118-118)向内引导以撞击预成型件,并分成两股沿预成型件沿相反方向移动的流,以防止环境 空气进入,以及从炉内逸出气体。 惰性气体还导致盘在空腔内移动以补偿预制件中的凹凸或与炉的垂直轴线的不对准,并提供缓冲垫,以避免盘与预制件之间的接触。

    Apparatus for supplying fluid to a rotating tube
    3.
    发明授权
    Apparatus for supplying fluid to a rotating tube 失效
    用于将流体供应到旋转管的装置

    公开(公告)号:US4501442A

    公开(公告)日:1985-02-26

    申请号:US468812

    申请日:1983-02-22

    申请人: Fred P. Partus

    发明人: Fred P. Partus

    CPC分类号: C03B37/01884 F16L27/0828

    摘要: A sealed rotary joint and method are described wherein a purge fluid is passed over a tube rotating within an end cap and through a ball bearing component of the joint.

    摘要翻译: 描述了一种密封的旋转接头和方法,其中清洗流体通过在端盖内旋转并通过接头的球轴承部件的管。

    Method for supplying fluid to a rotating tube
    4.
    发明授权
    Method for supplying fluid to a rotating tube 失效
    向旋转管供给流体的方法

    公开(公告)号:US4389231A

    公开(公告)日:1983-06-21

    申请号:US268611

    申请日:1981-06-01

    申请人: Fred P. Partus

    发明人: Fred P. Partus

    CPC分类号: C03B37/01884 F16L27/0828

    摘要: A sealed rotary joint and method are described wherein a purge fluid is passed over a tube rotating within an end cap and through a ball bearing component of the joint. A vapor stream including a vaporized glass forming precursor entrained in an oxidizing carrier gas is passed into a rotating optical fiber preform tube through a housing supporting the ball bearing. A stream of the oxidizing carrier gas at a pressure greater than the pressure of the vapor stream can act as the purge fluid.

    摘要翻译: 描述了一种密封的旋转接头和方法,其中清洗流体通过在端盖内旋转并通过接头的球轴承部件的管。 包含夹带在氧化载体气体中的汽化玻璃形成前体的蒸气流通过支撑球轴承的壳体进入旋转的光纤预制管。 在大于蒸气流的压力的压力下的氧化性载体气流可用作清洗流体。

    Method for manufacturing an article comprising a refractory dielectric
body
    5.
    发明授权
    Method for manufacturing an article comprising a refractory dielectric body 失效
    制造包含耐火介电体的制品的方法

    公开(公告)号:US5000771A

    公开(公告)日:1991-03-19

    申请号:US458921

    申请日:1989-12-29

    摘要: To attain high strength optical glass fibers, the glass preforms, from which the fibers are drawn, must generally be free of surface imperfections such as bubbles, and air lines. It has been discovered that these imperfections can be removed quickly and cleanly by contacting the preform surface with a substantial portion of the electrically conducting plasma region (the plasma fireball) extending from a plasma torch. Significantly, the surface material is substantially removed by vaporization, due to the extremely high plasma temperature (>9000.degree. C. at the plasma center) of the isothermal plasma torch. Though the temperatures in the tail of the plasma fireball are substantially less than at the plasma center, the temperatures are generally still several thousand degrees centigrade. These tail temperatures typically are sufficiently high to cause vaporization of most refractory dielectrics making the inventive method applicable to the fabrication of a wide variety of articles comprising refractory dielectric bodies.Advantageously, selective etching, according to one aspect of the inventive method, is used to remove fiber preform eccentricity and to fabricate optical fiber preforms with non-circular cross-sections for such applications as fiber sensors. Selective etching can result by controlling the plasma fireball location, the rotation of the silica preform, and/or the travel of the fireball across the preform. Significantly, the fireball location is controlled, among other ways, by injecting into the torch an additional gas that has a high ionization threshold or by inserting a probe along the axis of the torch. In either case, a substantial portion of the plasma fireball is advantageously "pushed" outside the torch for ease of contact with the silica preform surface, or any other refractory dielectric being processed.

    Apparatus for supplying fluid to a rotating tube comprising end cap with
purging fluid
    6.
    发明授权
    Apparatus for supplying fluid to a rotating tube comprising end cap with purging fluid 失效
    用于向包括具有清洗流体的端盖的旋转管供应流体的装置

    公开(公告)号:US4412683A

    公开(公告)日:1983-11-01

    申请号:US389329

    申请日:1982-06-17

    摘要: Apparatus for supplying fluid to a rotary tube uncontaminated with ambient air comprises an end cap having an open ended bore in which an end portion of the tube may be rotatably positioned, a first conduit extending into the end cap through which fluid may be fed into the rotary tube, and a second conduit communicating with the end cap bore through which a purge fluid may be fed into and at least partially through the bore to the exterior of the end cap.

    摘要翻译: 用于将流体供应到未被环境空气污染的旋转管的设备包括具有开口孔的端盖,其中管的端部可以可旋转地定位,第一导管延伸到端盖中,流体可以通过该第一导管供入到 旋转管,以及与端盖孔连通的第二导管,通过该第二导管可以将清洗流体供入并且至少部分地穿过孔至端帽的外部。

    Vapor delivery control system and method
    7.
    发明授权
    Vapor delivery control system and method 失效
    蒸汽输送控制系统及方法

    公开(公告)号:US4276243A

    公开(公告)日:1981-06-30

    申请号:US137148

    申请日:1980-04-04

    申请人: Fred P. Partus

    发明人: Fred P. Partus

    摘要: A method is disclosed for controlling the delivery of vapor from a bubbler containing a supply of liquid through which a carrier gas is bubbled and from which bubbler vapor is delivered in a vapor stream entrained with the carrier gas. The method comprises the steps of sensing the ratio of vapor to carrier gas in the vapor stream and applying heat to the liquid within the bubbler at rates relative to the sensed ratios of vapor to carrier gas being delivered from the bubbler in a vapor stream to hold the ratio constant.A vapor delivery control system is also disclosed which comprises a vaporizer, a heater thermally coupled with the vaporizer, and means for maintaining a supply of liquid in the vaporizer. The system further includes means for introducing a carrier gas into the vaporizer, means for conducting the carrier gas and vapors of the liquid entrained with the carrier gas from the vaporizer, means for sensing the ratio of vapor to carrier gas being conducted from the vaporizer, and means for controlling the heater responsive to the ratio of vapor to carrier gas sensed by the sensing means to hold the ratio constant.

    摘要翻译: 公开了一种用于控制从含有液体供应源的起泡器输送蒸汽的方法,通过该气体供应载气,并且在与载气携带的蒸汽流中从其中输送起泡器蒸气。 该方法包括以下步骤:检测蒸汽流中的蒸气与载气的比例,并以相对于蒸气与从起泡器在蒸汽流中输送的载气的感测比例的速率相对于起泡器内的液体加热,以保持 比例常数。 还公开了一种蒸气输送控制系统,其包括蒸发器,与蒸发器热耦合的加热器,以及用于维持蒸发器中的液体供应的装置。 该系统还包括用于将载气引入蒸发器的装置,用于将来自蒸发器的携带气体携带的液体的载气和蒸气传导的装置,用于感测从蒸发器传导的蒸气与载气的比率的装置, 以及用于响应于由感测装置感测的蒸气与载气的比率来控制加热器以保持该比率恒定的装置。

    Vapor delivery system and method of maintaining a constant level of
liquid therein
    8.
    发明授权
    Vapor delivery system and method of maintaining a constant level of liquid therein 失效
    蒸气输送系统及其中保持恒定液体水平的方法

    公开(公告)号:US4235829A

    公开(公告)日:1980-11-25

    申请号:US36714

    申请日:1979-05-07

    申请人: Fred P. Partus

    发明人: Fred P. Partus

    摘要: A vapor delivery system is disclosed comprising a bubbler 12 is adapted to generate and deliver vapors from a vaporizable liquid contained therein, and a reservoir 30 in fluid communication with the bubbler 12 from which liquid may be continuously fed into the bubbler to replenish liquid vaporized within and withdrawn from the bubbler. The system further comprises means for sensing the level of vaporizable liquid in the bubbler and means for providing a gaseous head pressure in the reservoir of variable magnitude dependent upon the level of vaporizable liquid sensed by the sensing means to maintain the level of liquid in the bubbler substantially constant.

    摘要翻译: 公开了一种蒸气输送系统,其包括起泡器12,其适于产生并从其中容纳​​的可蒸发液体输送蒸气,以及与起泡器12流体连通的储存器30,液体可从该起泡器12连续地供入到起泡器中以补充在内部蒸发的液体 并从起泡器中撤出。 该系统还包括用于感测起泡器中的可蒸发液体的水平的装置,以及用于根据感测装置感测到的可蒸发液体的水平来提供可变量级的储存器中的气体头部压力的装置,以保持起泡器中的液体水平 基本恒定。

    Housing for an optical fiber preform torch
    9.
    发明授权
    Housing for an optical fiber preform torch 失效
    光纤预制火炬的外壳

    公开(公告)号:US06767205B1

    公开(公告)日:2004-07-27

    申请号:US10397029

    申请日:2003-03-25

    IPC分类号: F23D1136

    摘要: A torch and mount assembly wherein the torch, which has a plurality of gas receiving nipples is carried in a housing through which it extends. The housing has a plurality of walls forming a substantially air tight enclosure. In at least one wall of the housing are one or more leakproof fittings which are connected to similar leakproof fittings for the nipples by means of preferably flexible gas conduits within the housing. In the system, gaseous mixtures are applied from a source or sources to the fittings in the housing wall remote from the high temperatures of the torch, while the conduits within the housing are protected from mechanical and thermal stresses. An inert gas from a suitable source is introduced under pressure into the interior of the housing to reduce leakage from the torch into the housing. The atmosphere within the housing is heated, and the constituents of the housing atmosphere are monitored to aid in detecting leakage.

    摘要翻译: 一种手电筒和安装组件,其中具有多个气体接收接头的手电筒被承载在其延伸的壳体中。 壳体具有形成基本上气密的外壳的多个壁。 在壳体的至少一个壁中是一个或多个防漏配件,其通过壳体内的优选柔性气体导管连接到乳头的类似的防漏配件。 在系统中,气体混合物从源或源施加到远离火炬的高温的壳体壁中的配件,同时保护壳体内的导管免受机械和热应力。 来自合适来源的惰性气体在压力下引入到壳体的内部,以减少从割炬进入壳体的泄漏。 外壳内的气氛被加热,并且监测住房大气的成分以帮助检测泄漏。

    Methods of and apparatus for vapor delivery control in optical preform
manufacture
    10.
    发明授权
    Methods of and apparatus for vapor delivery control in optical preform manufacture 失效
    光学预制棒制造中蒸气传输控制的方法和装置

    公开(公告)号:US4582480A

    公开(公告)日:1986-04-15

    申请号:US637246

    申请日:1984-08-02

    摘要: A vapor delivery system for the manufacture of an optical preform includes a deposition bubbler (60) and another bubbler (40) referred to as a supply bubbler which is interposed between a reservoir (24) of a liquid and the deposition bubbler. Heat energy is applied to the supply bubbler and to the deposition bubbler to vaporize liquid therein. A carrier gas is introduced into the liquid in the supply bubbler at a location below the free surface and into the deposition bubbler to cause vapor of the liquid to become entrained in the carrier gas and to flow from the supply bubbler into the deposition bubbler and from the deposition bubbler to a substrate tube from which an optical preform is made. Facilities are provided for maintaining sufficient liquid in the supply bubbler and suitable temperatures of the liquid in the supply and deposition bubblers to control the vapor flow into and out of the deposition bubbler to prevent unintended perturbations in the deposition bubbler. As a result, the concentration level of the vapor which is entrained in the carrier gas and delivered to the substrate tube is maintained at a substantially constant value.

    摘要翻译: 用于制造光学预型件的蒸气输送系统包括沉积起泡器(60)和称为供应起泡器的另一起泡器(40),其被插入在液体的储存器(24)和沉积起泡器之间。 将热能施加到供应起泡器和沉积起泡器以使其中的液体蒸发。 将载气引入供应起泡器中的液体在自由表面下方的位置并进入沉积起泡器,以使液体的蒸汽夹带在载气中并从供应起泡器流入沉积起泡器,并从 沉积起泡器到达制造光学预型件的基底管。 提供了用于在供应起泡器中保持充足液体的设施和在供应和沉积起泡器中的液体的适当温度以控制进入和离开沉积起泡器的蒸汽流,以防止沉积起泡器中的意外的扰动。 结果,夹带在载气中并被输送到基底管的蒸气的浓度水平保持在基本恒定的值。