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3 条记录 (耗时 0.017 秒)

    High pressure liquid pump
    1.
    发明授权
    High pressure liquid pump 失效
    高压液体泵

    公开(公告)号：US3556692A

    公开(公告)日：1971-01-19

    申请号：US3556692D

    申请日：1969-03-04

    申请人： ATOMIC ENERGY AUTHORITY UK

    发明人： PIGOTT ALBERT EDWARD ,  THOMPSON PETER JOHN

    IPC分类号： F04B19/00 ,  F04B11/00 ,  F04B13/00 ,  F04B23/02 ,  F04B53/00 ,  F04B53/10 ,  F04B53/16

    CPC分类号： F04B53/162 ,  F04B11/0016 ,  F04B23/02 ,  F04B53/00 ,  F04B53/10

    摘要： A HIGH PRESSURE PUMP HAS A PUMP CYLINDER CONTAINED BY AN OUTER PRESSURE VESSEL, AN INTERSPACE BEING DEFINED BETWEEN THE PUMP CYLINDER AND THE PRESSURE VESSEL. LIQUID IS PRESSURISED IN THE PUMP CYLINDER BY A PISTON AND PRESSURISED LIQUID IS FED THROUGH A NONRETURN VALVE FROM THE PUMP CYLINDER INTO THE INTERSPACE ON THE PRESSURISING STROKE OF THE PISTON. SUPPLY OF LIQUID BY THE PUMP AT

    CONSTANT PRESSURE IS FROM THE INTERSPACE. AN ACCUMULATOR SPACE OF VARIABLE VOLUME MAY BE PROVIDED CONNECTED WITH THE INTERSPACE TO ACCOMMODATE FOR DIFFERENCES BETWEEN THE RATE OF SUPPLY OF LIQUID FROM THE INTERSPACE AND THE RATE OF FEED OF LIQUID FROM THE PUMP CYLINDER INTO THE INTERSPACE.

    Hydrostatic extrusion
    2.
    发明授权
    Hydrostatic extrusion 失效
    液压挤出

    公开(公告)号：US3618351A

    公开(公告)日：1971-11-09

    申请号：US3618351D

    申请日：1969-04-24

    申请人： ATOMIC ENERGY AUTHORITY UK

    发明人： THOMPSON PETER JOHN

    IPC分类号： B21C23/00 ,  B21C23/02

    CPC分类号： B21C23/007

    摘要： THE DISCLOSURE RELATES TO A PROCESS FOR EXTRUDING A BILLET THROUGH A DIE BY SUBJECTING THE BILLET TO THE PRESSURE OF HYDRAULIC LIQUID IN A CONTAINER AND BY APPLICATION OF A DIRECT MECHANICAL LOADING ON THE BILLET SUCH AS BY APPLICATION OF A DRAWING LOAD ON THE EXTRUDED LENGTH OF THE BILLET. A DIE HAVING A CONICAL ORIFICE IS EMPLOYED AND AS THE REAR END OF THE BILLET PASSES THROUGH THE DIE THE STRESSES REQUIRED FOR EXTRUSION OF THE END OF THE BILLET THROUGH THE DIE GRADUALLY DECREASE. THUS DURING EXTRUSION OF THE REAR END OF THE BILLET THROUGH THE DIE THE PRESSURE IN THE LIQUID CAN BE GRADUALLY REDUCED UNTIL WHEN THE REAR END OF THE BILLET PASSES OUT OF THE DIE THE LIQUID PRESSURE IS REDUCED TO A LOW PRESSURE AND A BLAST OF PRESSURISED LIQUID FROM THE DIE IS AVOIDED.