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142 条记录 (耗时 0.016 秒)

    PROFILKONTUR EINER SCHRAUBENSPINDELPUMPE
    63.
    发明公开
    PROFILKONTUR EINER SCHRAUBENSPINDELPUMPE 审中-公开
    螺杆泵的成型轮廓

    公开(公告)号：EP1355758A1

    公开(公告)日：2003-10-29

    申请号：EP02715419.4

    申请日：2002-01-12

    申请人： Steffens, Ralf

    发明人： Steffens, Ralf

    IPC分类号： B23G1/32

    CPC分类号： B23G1/32 ,  B23F15/08 ,  F04C18/084 ,  F04C18/16 ,  F04C2220/12 ,  F04C2230/10 ,  Y10T29/49242 ,  Y10T409/303808

    摘要： The invention relates to the production of screw pump rotors comprising a pitch and/or depth of teeth which can be modified along the axis of the rotor. By means of a simple profiled machine tool (7), a first part of the profiled flank contour is clearly defined along the rotor axis (8) by means of its specific tool guide mechanism, and is then produced in a definitive manner. The remaining second part of the profiled flank contour is then determined according to the rolling movement of the pair of rotors according to the first part of the profiled flank contour carried out by the tool, by means of an approximation which is as precise as possible. It is thus possible to obtain transversally different profiled contours according to the pitch and/or depth of teeth which can be modified along the axis of the rotor. A disk milling cutter is selected to be used as a profiled machine tool.

    INTERNALLY PROFILED STATOR TUBE
    66.
    发明公开
    INTERNALLY PROFILED STATOR TUBE 有权
    内轮廓定子

    公开(公告)号：EP1095218A1

    公开(公告)日：2001-05-02

    申请号：EP99934405.4

    申请日：1999-06-03

    申请人： Halliburton Energy Services, Inc.

    发明人： BOTTOS, Richard, D. ,  UNDERWOOD, Lance, D.

    IPC分类号： F04C2/08

    CPC分类号： F04C2/1075 ,  F04C2230/26 ,  Y10T29/49236 ,  Y10T29/49242

    摘要： A thick walled Moineau-style stator (320) and method of manufacture are disclosed. The outer profile (355) of the stator follows the inner helical profile (353) of the stator. The application of an elastomeric layer (330) to the inner profile of the stator results in a constant thickness for the elastomeric layer and proximity for the walls of the stator. This improves the durability of the motor because of lower heat generation and better heat dissipation. The stator walls also support the elastomeric layer. Further, the thick walls of the preferred stator eliminate the need for additional drill piping or other support provided adjacent the stator. Thus, the cost of additional piping and difficulties placing a stator inside drill pipe or drill string housing are eliminated. Further, the improved strength of thick wall steel when contrasted to a thin wall counterpart allows a higher operating pressure drop for a given stator length, resulting in a higher power output. Moreover, the undulating outer profile of the stator provides a distinctive appearance to the stator piping.

    VACUUM PUMP ROTOR AND METHOD OF MANUFACTURING THE SAME
    68.
    发明公开
    VACUUM PUMP ROTOR AND METHOD OF MANUFACTURING THE SAME 审中-公开
    工艺用于生产真空泵的旋转活塞和用这种方法制造旋转活塞

    公开(公告)号：EP0975874A1

    公开(公告)日：2000-02-02

    申请号：EP99905198.0

    申请日：1999-02-15

    申请人： EBARA CORPORATION

    发明人： ISHIBASHI, Yoshimitsu ,  USUI, Katsuaki ,  ARAI, Satoshi

    IPC分类号： F04C18/08 ,  F04C18/12

    CPC分类号： F04C18/126 ,  F04C18/084 ,  Y10T29/49242

    摘要： A rotor has an interior free from invasion of water and is resistant to deformation from applied stresses normally encountered during the operation of a vacuum pump. The rotor comprises a rotor shell formed to conform to an outline of lobes and side-plates for covering transverse ends of the rotor shell. A rotation shaft is secured to the side-plates. A hollow section is formed by the rotor shell and the side-plates which is under a vacuum environment.

    Screw rotor and method of generating tooth profile therefor
    69.
    发明公开
    Screw rotor and method of generating tooth profile therefor 失效
    螺杆转子及其产生齿形的方法

    公开(公告)号：EP0736667A2

    公开(公告)日：1996-10-09

    申请号：EP96105462.4

    申请日：1996-04-04

    申请人： EBARA CORPORATION

    发明人： Kawamura, Takeshi ,  Yanagisawa, Kiyoshi ,  Nagata, Shigeyoshi

    IPC分类号： F01C1/16

    CPC分类号： F01C1/084 ,  F05B2200/261 ,  Y10T29/49242

    摘要： The transverse tooth profile of a screw rotor which meshes with a companion screw rotor is defined by a tooth root circular arc, an outer circumferential circular arc, and two curves interconnecting the tooth root circular arc and the outer circumferential circular arc. One of the curves is defined by a trochoid curve generated by a point on an outer circumferential surface of the companion screw rotor. Alternatively, the curve may comprise two curve segments, and one of the two curve segments comprising a tooth tip arc which is defined as an arc having a radius of curvature equal to or smaller than the difference between a radius of curvature of the outer circumferential circular arc and a radius of a pitch circle of the tooth profile, and the other of the two curve segments comprising a curve connected to the tooth root circular arc and determined by a curve generated by the tooth tip arc of the companion screw rotor. The other curve is defined by determining a curve which defines an imaginary rack and thereafter producing a tooth profile curve generated by the imaginary rack.

    摘要翻译： 与配对螺杆转子啮合的螺杆转子的横向齿形由齿根圆弧，外圆弧和将齿根圆弧与外圆周圆弧相互连接的两条曲线限定。 其中一条曲线由配对螺旋转子的外圆周表面上的一点产生的次摆线​​曲线定义。 或者，该曲线可以包括两个曲线段，并且两个曲线段中的一个包括齿尖圆弧，该齿尖圆弧被定义为曲率半径等于或小于外圆周的曲率半径 所述两个曲线段中的另一个曲线段包括连接到所述齿根圆弧并由所述配对螺杆转子的所述齿尖弧产生的曲线确定的曲线。 另一条曲线是通过确定一个曲线来确定的，该曲线定义了一个假想齿条，然后产生一个由假想齿条产生的齿廓曲线。