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8 条记录 (耗时 0.011 秒)

    Secondary sealing device
    4.
    发明授权
    Secondary sealing device 失效
    二次密封装置

    公开(公告)号：US3947044A

    公开(公告)日：1976-03-30

    申请号：US593817

    申请日：1975-07-07

    申请人： Jaromir Friedrich

    发明人： Jaromir Friedrich

    IPC分类号： F04D29/12 ,  F04D29/14 ,  F16J15/00 ,  F16J15/16 ,  F16J15/06 ,  F16J15/24

    CPC分类号： F16J15/008 ,  F04D29/12 ,  F04D29/14 ,  F16J15/164 ,  Y10S277/929

    摘要： A secondary sealing device is provided for a pump used for pumping gases under pressure. Leakage of gas between a main seal and the pump shaft is permitted up to a predetermined maximum pressure but once that pressure has been exceeded, a pressure sensor activates a switch to stop rotation of the pump shaft. When the shaft has come to a halt, a high pressure gas such as nitrogen is introduced into a secondary seal circumferential of the shaft whereby a resilient sealing ring is forced into tight sealing contact with the pump shaft to prevent any further leakage of the pumped gas to the atmosphere.

    Magnetic-control closure system
    7.
    发明授权
    Magnetic-control closure system 失效
    磁控闭合系统

    公开(公告)号：US4226427A

    公开(公告)日：1980-10-07

    申请号：US2018

    申请日：1979-01-09

    申请人： Claude Duquenne ,  Andre Mondy

    发明人： Claude Duquenne ,  Andre Mondy

    IPC分类号： F04D29/14 ,  F16J15/00 ,  H01F7/06 ,  F16J15/34

    CPC分类号： F16J15/008 ,  F04D29/14 ,  H01F7/06 ,  Y10S277/919

    摘要： The inner compartment of a compressor for noxious fluids is isolated by means of the closure system when the compressor is stationary and disengaged from its driving means. The closure system is controlled by a magnetic attraction system, the external surface of which is uniformly constructed of magnetic material having a small thickness at the level of non-magnetic elements. A particularly noteworthy application of the system is in motor-compressor sets for the transfer of toxic and hazardous fluids employed in the nuclear engineering field.

    摘要翻译： 当压缩机静止并与其驱动装置脱离时，用于有害流体的压缩机的内部隔室通过封闭系统隔离。 闭合系统由磁吸引系统控制，磁吸引系统的外表面由非磁性元件的厚度小的磁性材料均匀地构成。 该系统的一个特别值得注意的应用是用于转移在核工程领域使用的有毒和有害流体的电动压缩机组。

    Liquid-sealed centrifugal pump
    8.
    发明授权
    Liquid-sealed centrifugal pump 失效
    液体密封离心泵

    公开(公告)号：US3676011A

    公开(公告)日：1972-07-11

    申请号：US3676011D

    申请日：1970-03-27

    申请人： ANDRITZ AG MASCHF

    发明人： REIF KURT

    IPC分类号： F04D29/14 ,  F04D29/58 ,  F01D11/00

    CPC分类号： F04D29/5893 ,  F04D29/14

    摘要： AN IMPELLER IS SECURED TO A ROTATABLE SHAFT TO ROTATE THEREWITH. A SHAFT SEAL IS ARRANGED TO SEAL SAID SHAFT ON ONE SIDE OF SAID IMPELLER. A GUID BEARING COOPERATES WITH SAID SHAFT AND IS DISPOSED BETWEEN SAID SHAFT SEAL AND SAID IMPELLER AND ARRANGED TO PERMIT OF A LEAKAGE OF A PREDETERMINED AMOUNT OF LIQUID FROM SAID ONE SIDE OF SAID IMPELLER INTO SAID RECEIVING CHAMBER WHEN SAID IMPELLER COASTS TO A STOP FROM A ROTATION AT A PREDETERMINED, NORMAL SPEED IN SUCH A SENSE THAT LIQUID IS DELIVERED BY SAID IMPELLER ON SAID ONE SIDE THEREOF. A STANDSTILL SEAL IS DISPOSED BETWEEN SAID GUIDE BEARING AND SAID IMPELLER AND ARRANGED TO BE OPEN DURING A ROTATION OF THE IMPELLER IN SAID SENSE AND TO BE CLOSED WHEN SAID IMPELLER IS STOPPED. MEANS ARE PROVIDED WHICH DEFINE A RECEIVING CHAMBER THAT IS DISPOSED BETWEEN AND COMMUNICATES WITH SAID SHAFT SEAL AND SAID GUIDE BEARING AND ADAPTED TO HOLD SAID PREDETERMINED AMOUNT OF LIQUID MEANS ARE PROVIDED TO SUPPLY A SEALING LIQUID TO SAID RECEIVING CHAMBER.