Gas bearing, porous media vacuum roller and porous media air turn

    公开(公告)号:US10294057B2

    公开(公告)日:2019-05-21

    申请号:US14847895

    申请日:2015-09-08

    IPC分类号: B65H27/00 B65H23/32

    摘要: In order to provide web handling which mitigates marking of the web, externally-pressurized porous media gas bearings are used for vacuum rollers, which provide differential tension, and also for air turns, which provide non-contact turning of webs. The porous media gas bearings mitigate three of the biggest issues with the current technology, including cost, high flow rates and low pressure, and web marking. By introducing positive pressure or both, various configurations are presented which allow for improved differential tension, or non-contact conveyance. By also employing externally-pressurized radial bearings, more alternatives are provided, including conveyance and lateral motion of webs without the use of motors. Lastly, employing novel lightweight materials allows for yet other configurations which also employ some of the same aforementioned benefits.

    THRUST BEARING AS A SEAL
    3.
    发明申请
    THRUST BEARING AS A SEAL 审中-公开
    推力轴承作为密封

    公开(公告)号:US20160090991A1

    公开(公告)日:2016-03-31

    申请号:US14869539

    申请日:2015-09-29

    发明人: Andrew J. Devitt

    摘要: A porous media ventless thrust bearing seal is disclosed. The porous media thrust bearing may include a primary porous media thrust bearing also serving as a seal ring including porous media positioned over a plenum and a port connected to the plenum, and conductive passages for communicating pressurized fluid to the plenums through the ports of the primary ring. The porous media ventless thrust bearing may also include a treated process gas supplied to a port which is closest to the untreated process gas, at a pressure which is higher than the untreated process gas. An inert gas (or fluid in a liquid state) may be supplied to the remaining port, at a pressure which is the same as the untreated process gas. A certain amount of treated process gas may flow into the untreated process gas, and may prevent the untreated gas from entering the porous media seal.

    摘要翻译: 公开了一种多孔介质无通气推力轴承密封件。 多孔介质推力轴承可以包括也用作密封环的主要多孔介质止推轴承,其包括位于增压室上方的多孔介质和连接到集气室的端口,以及用于将加压流体通过主要 环。 多孔介质无通气推力轴承还可以包括在比未经处理的工艺气体高的压力下供应到最接近未处理工艺气体的端口的处理过程气体。 惰性气体(或液体状态)可以以与未经处理的工艺气体相同的压力供应到剩余的端口。 一定量的经处理的工艺气体可能流入未经处理的工艺气体,并且可以防止未处理气体进入多孔介质密封件。

    Thrust bearing as a seal
    4.
    发明授权

    公开(公告)号:US10100932B2

    公开(公告)日:2018-10-16

    申请号:US14869539

    申请日:2015-09-29

    发明人: Andrew J. Devitt

    摘要: A porous media ventless thrust bearing seal is disclosed. The porous media thrust bearing may include a primary porous media thrust bearing also serving as a seal ring including porous media positioned over a plenum and a port connected to the plenum, and conductive passages for communicating pressurized fluid to the plenums through the ports of the primary ring. The porous media ventless thrust bearing may also include a treated process gas supplied to a port which is closest to the untreated process gas, at a pressure which is higher than the untreated process gas. An inert gas (or fluid in a liquid state) may be supplied to the remaining port, at a pressure which is the same as the untreated process gas. A certain amount of treated process gas may flow into the untreated process gas, and may prevent the untreated gas from entering the porous media seal.

    GAS BEARING, POROUS MEDIA VACUUM ROLLER AND POROUS MEDIA AIR TURN
    5.
    发明申请
    GAS BEARING, POROUS MEDIA VACUUM ROLLER AND POROUS MEDIA AIR TURN 审中-公开
    气体轴承,多孔介质真空滚子和多孔介质空气

    公开(公告)号:US20160068360A1

    公开(公告)日:2016-03-10

    申请号:US14847895

    申请日:2015-09-08

    IPC分类号: B65H20/12

    摘要: In order to provide web handling which mitigates marking of the web, externally-pressurized porous media gas bearings are used for vacuum rollers, which provide differential tension, and also for air turns, which provide non-contact turning of webs. The porous media gas bearings mitigate three of the biggest issues with the current technology, including cost, high flow rates and low pressure, and web marking. By introducing positive pressure or both, various configurations are presented which allow for improved differential tension, or non-contact conveyance. By also employing externally-pressurized radial bearings, more alternatives are provided, including conveyance and lateral motion of webs without the use of motors. Lastly, employing novel lightweight materials allows for yet other configurations which also employ some of the same aforementioned benefits.

    摘要翻译: 为了提供减轻幅材标记的纸幅处理,外部加压的多孔介质气体轴承用于提供差分张力的真空辊,并且还用于提供幅材的非接触转动的空气转动。 多孔介质气体轴承减轻了当前技术中最大的三个问题,包括成本,高流量和低压,以及网络标记。 通过引入正压或两者,提出了允许改进的差动张力或非接触输送的各种构造。 通过使用外部加压的径向轴承,还提供了更多的替代方案,包括不使用马达的腹板的运输和侧向运动。 最后,采用新颖的轻质材料允许还采用一些相同的上述优点的其他构造。

    THRUST BEARING AS A SEAL
    6.
    发明申请

    公开(公告)号:US20190049019A1

    公开(公告)日:2019-02-14

    申请号:US16160656

    申请日:2018-10-15

    发明人: Andrew J. Devitt

    摘要: A porous media ventless thrust bearing seal is disclosed. The porous media thrust bearing may include a primary porous media thrust bearing also serving as a seal ring including porous media positioned over a plenum and a port connected to the plenum, and conductive passages for communicating pressurized fluid to the plenums through the ports of the primary ring. The porous media ventless thrust bearing may also include a treated process gas supplied to a port which is closest to the untreated process gas, at a pressure which is higher than the untreated process gas. An inert gas (or fluid in a liquid state) may be supplied to the remaining port, at a pressure which is the same as the untreated process gas. A certain amount of treated process gas may flow into the untreated process gas, and may prevent the untreated gas from entering the porous media seal.

    Porous media ventless seal
    7.
    发明授权

    公开(公告)号:US10030666B2

    公开(公告)日:2018-07-24

    申请号:US14869456

    申请日:2015-09-29

    发明人: Andrew J. Devitt

    摘要: The use of externally-pressurized porous media in shaft sealing for turbomachinery is provided for single seals, tandem seals, double-opposed seals, and a ventless seal. These arrangements provide for significant benefits, such as the following: (a) external pressurization allows frozen seal faces to lift open before rotation, (b) pressure is distributed uniformly across the seal face, as opposed to allowing leakage to pass over it, (c) low flow rates of injected gas are possible, (d) the seal faces are self-defending due to the uniform pressure in the gap, and (e) complete elimination of venting process gas is possible. By employing externally-pressurized porous media sealing, a drastic simplification of seal design, as well as gas treatment and seal panel design, is possible.

    POROUS MEDIA VENTLESS SEAL
    9.
    发明申请

    公开(公告)号:US20160091094A1

    公开(公告)日:2016-03-31

    申请号:US14869456

    申请日:2015-09-29

    发明人: Andrew J. Devitt

    IPC分类号: F16J15/34

    摘要: The use of externally-pressurized porous media in shaft sealing for turbomachinery is provided for single seals, tandem seals, double-opposed seals, and a ventless seal. These arrangements provide for significant benefits, such as the following: (a) external pressurization allows frozen seal faces to lift open before rotation, (b) pressure is distributed uniformly across the seal face, as opposed to allowing leakage to pass over it, (c) low flow rates of injected gas are possible, (d) the seal faces are self-defending due to the uniform pressure in the gap, and (e) complete elimination of venting process gas is possible. By employing externally-pressurized porous media sealing, a drastic simplification of seal design, as well as gas treatment and seal panel design, is possible.

    摘要翻译: 用于涡轮机械的轴封密封中使用外部加压的多孔介质用于单个密封件,串联密封件,双相对密封件和无通气密封件。 这些布置提供了显着的好处,例如:(a)外部加压允许冷冻密封面在旋转之前提升,(b)压力均匀地分布在密封面上,而不是允许渗漏通过它 c)注入气体的低流量是可能的,(d)由于间隙中的均匀压力,密封面是自我保护的,(e)完全消除排气过程气体是可能的。 通过采用外部加压的多孔介质密封,可以大大简化密封设计,以及气体处理和密封面板设计。