Insulated dryer drum
    1.
    发明授权
    Insulated dryer drum 失效
    绝缘干燥鼓

    公开(公告)号:US5528838A

    公开(公告)日:1996-06-25

    申请号:US217711

    申请日:1994-03-25

    CPC分类号: F26B13/183 D06F58/04

    摘要: The invention pertains to apparatus for thermally insulating selected portions of a cylindrical dryer drum, usually adjacent the drum ends, for the purpose of obtaining a substantially uniform drum shell temperature throughout its length to obtain a uniform moisture profile throughout the width of the web being dried. A plurality of cylindrical segments are bolted together within the drum interior to define a circumferential assembly biased against the drum inner surface. The segments each include a thermal insulation material engaging the drum shell preventing direct access of that engaged portion of the shell with the steam within the drum thereby reducing the exterior temperature of the drum shell at the location of the thermally insulated segment. The segments may be bolted together, widthwise, to increase the axial dimension of the temperature controlling segment assembly.

    摘要翻译: 本发明涉及用于隔热圆筒形干燥器滚筒的选定部分的设备,该设备通常与滚筒端部相邻,以便在其整个长度上获得基本上均匀的滚筒壳体温度,以在整个幅材干燥宽度上获得均匀的湿度分布 。 多个圆柱形段在滚筒内部被螺栓连接在一起以限定偏压在滚筒内表面上的圆周组件。 这些段各自包括接合鼓壳的绝热材料,防止壳体的接合部分与滚筒内的蒸汽直接接触,从而在隔热部分的位置减小滚筒外壳的外部温度。 这些段可以在宽度方向上螺栓连接在一起,以增加温度控制段组件的轴向尺寸。

    Rotary joint with extended life seal
    2.
    发明授权
    Rotary joint with extended life seal 失效
    旋转接头与延长生命密封

    公开(公告)号:US5226677A

    公开(公告)日:1993-07-13

    申请号:US743445

    申请日:1991-08-09

    IPC分类号: F16L27/093 D21F5/02 F16L27/08

    CPC分类号: D21F5/028 F16L27/082

    摘要: The invention pertains to a rotary joint for use with rotating machinery, such as a dryer drum, where the joint is conveying steam by means of a rotating nipple and sealing structure. The primary elements are a stationary housing comprised of a head, body and a wear plate, a pickup tube and a spring biased nipple with a collar which engages a molybdenum lubricated reverse radius seal ring. Alignment of the components is maintained through the interaction of two guide bearings supporting the nipple, the wear plate sealing surface and the nipple collar which is spring biased against a reverse radius seal ring intermediate the wear plate sealing surface and the nipple collar sealing surface. The invention includes a plurality of radial slots defined on the nipple collar sealing surface which reduce seal loading when steam is applied to the joint by reducing the area subjected to a differential pressure, and which lubricate the sealing surface with steam and a dry lubricant impregnated reverse radius seal ring positioned intermediate the wear plate and the nipple collar sealing surfaces.

    Anti-corrosive rotary joint
    3.
    发明授权
    Anti-corrosive rotary joint 失效
    防腐旋转接头

    公开(公告)号:US5110162A

    公开(公告)日:1992-05-05

    申请号:US661598

    申请日:1991-02-28

    IPC分类号: F16L27/08 F16L39/00

    CPC分类号: F16L39/04

    摘要: This invention pertains to a rotary joint for use with rotating machinery where the joint is conveying high temperature corrosive fluids such as molten salts. The joint includes both a stationary head to which external connections are made and a housing mounted on and rotating with a rotary apparatus with which the joint communicates. Alignment of the components is maintained through the interaction of two sleeve bearings disposed between a nipple coaxially extending from the head and the joint housing surrounding the nipple; the sleeve bearings being axially displaced from each other, the primary seal occupying an intermediate position. The primary seal is a spherical seal, interposed between a stationary nipple seal surface and a rotary housing sealing surface. The seal is preloaded by means of an external joint biasing support bracket to reduce leakage under conditions of low internal fluid pressures.

    Air controlled rotary joint compensator
    4.
    发明授权
    Air controlled rotary joint compensator 失效
    气动旋转接头补偿器

    公开(公告)号:US5067824A

    公开(公告)日:1991-11-26

    申请号:US545569

    申请日:1990-06-29

    IPC分类号: F16L27/087

    CPC分类号: F16L27/087

    摘要: The invention pertains to the method and apparatus of compensating for the axial bearing load forces imposed upon rotary joints conveying a pressurized fluid medium, such as steam, by imposing an axial force on the rotary joint housing proportional to the pressure within the rotary joint by use of a distinctively different pressurized medium than that comveyed by the joint, such as compressed air. An expansible chamber motor capable of imposing an axial force on the rotary joint utilizes compressed air whose pressure is controlled by a sensing and regulating system responsive to the pressure within the rotary joint.

    摘要翻译: 本发明涉及通过使用与旋转接头中的压力成比例的旋转接头壳体施加轴向力来补偿施加在旋转接头上传送加压流体介质(例如蒸汽)的轴向轴承负载力的方法和装置, 与压缩空气等接头所输送的压力介质不同的加压介质。 能够在旋转接头上施加轴向力的可膨胀腔室电动机利用压缩空气,其压力由响应于旋转接头内的压力的感测和调节系统控制。

    Air controlled rotary joint compensator
    5.
    发明授权
    Air controlled rotary joint compensator 失效
    气动旋转接头补偿器

    公开(公告)号:US4971367A

    公开(公告)日:1990-11-20

    申请号:US351465

    申请日:1989-05-15

    IPC分类号: F16L27/08

    CPC分类号: F16L27/08 Y10S285/90

    摘要: The invention pertains to the method and apparatus of compensating for the axial bearing load forces imposed upon rotary joints conveying a pressurized fluid medium, such as steam, by imposing an axial force on the rotary joint housing proportional to the pressure within the rotary joint by use of a distinctively different pressurized medium than that conveyed by the joint, such as compressed air. An expansible chamber motor capable of imposing an axial force on the rotary joint utilizes compressed air whose pressure is controlled by a sensing and regulating system responsive to the pressure within the rotary joint.

    Dryer bar apparatus of a dryer
    7.
    发明授权
    Dryer bar apparatus of a dryer 有权
    烘干机烘干机

    公开(公告)号:US07673395B2

    公开(公告)日:2010-03-09

    申请号:US10715889

    申请日:2003-11-17

    IPC分类号: F26B11/02

    摘要: A dryer bar apparatus of a dryer for drying a web in a papermaking machine includes a number of turbulence bars circumferentially spaced equidistantly around the inner surface of the dryer shell for generating turbulence within a layer of condensate. The arrangement is such that uniformity of the transfer of thermal energy in the cross machine direction is maximized while the transfer of thermal energy through the dryer shell from the inner to the outer surface is minimized. Also, the number of turbulence bars is determined by the equation: N=int{2πRi/[4π(Ri/d)½+W]} in which: N=the number of turbulence bars in the dryer shell; int=an integer number of a value in { } brackets; π=3.1415; Ri=the inside radius of the inner surface of the dryer shell in inches; d=an average depth of the layer in inches; W=a width of each of the turbulence bars in inches.

    摘要翻译: 用于在造纸机中干燥幅材的干燥器的干燥棒装置包括围绕干燥器壳体的内表面等距离地周向间隔开的多个湍流条,用于在冷凝物层内产生湍流。 这种布置使得在横向机器方向上的热能传递的均匀性最大化,同时通过干燥器壳体从内部到外部表面的热能传递最小化。 此外,湍流条的数量由下式确定:N = int {2&pgr; Ri / [4&pgr;(Ri / d)1/2 + W]}其中:N =干燥器壳体中的湍流条数; int = {}括号中的值的整数; &pgr; = 3.1415; Ri =干燥器壳体的内表面的内半径,单位为英寸; d =层的平均深度,单位为英寸; W =每英寸湍流条的宽度。

    Impact resistant rotary joint with glide ring seals
    9.
    发明授权
    Impact resistant rotary joint with glide ring seals 失效
    具有滑环密封的抗冲击旋转接头

    公开(公告)号:US5169181A

    公开(公告)日:1992-12-08

    申请号:US807519

    申请日:1991-12-16

    IPC分类号: F16L27/08 F28D11/02

    摘要: A rotary joint for rotating heat exchangers of the drum or roll type having a journal wherein damage to the rotary joint by radial impact forces is minimized by mounting the joint housing upon the rotating journal, the joint nipple is stationary and mounted upon the fluid receiving head and spherical roller bearings are interposed between the housing and nipple. The primary fluid seal is located adjacent the heat exchanger journal and impact forces between the seal components and nipple, and their surrounding structure, is absorbed by the use of annular elastic glide rings which also function as fluid seals.

    Aspirated syphon shoe
    10.
    发明授权
    Aspirated syphon shoe 失效
    吸气虹吸鞋

    公开(公告)号:US5109612A

    公开(公告)日:1992-05-05

    申请号:US622957

    申请日:1990-12-06

    申请人: Gerald L. Timm

    发明人: Gerald L. Timm

    CPC分类号: F26B13/183 D21F5/10 F28F5/02

    摘要: A low differential pressure rotary syphon for the purpose of removing condensate from the interior of steam a heated dryer drum under low differential pressure conditions. The reduction in the magnitude of differential pressure required to remove the condensate is accomplished through the direct introduction of steam into a central plenum area receiving condensate thereby reducing the mass density of the condensate mixture. The reduction in mass density and the steam introduced acting directly on the condensate within the central plenum area facilitates the removal of the condensate from the drying drum interior.