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    Sliding device
    14.
    发明授权
    Sliding device 有权
    滑动装置

    公开(公告)号：US06644172B1

    公开(公告)日：2003-11-11

    申请号：US09889708

    申请日：2001-07-18

    Applicant: Seiichi Nakayama ,  Shogo Muramatsu ,  Akira Takenaka

    Inventor： Seiichi Nakayama ,  Shogo Muramatsu ,  Akira Takenaka

    IPC: F04B3900

    CPC classification number: F04B27/0886 ,  F05C2201/0409 ,  F05C2253/12

    Abstract: A semi-spherical shoe 1 includes a semi-spherical surface 1A and a flat end face 1B. The semi-spherical surface 1A comprises a sliding contact region 1a which is disposed in sliding contact with a semi-spherical recess 2B formed in a piston 2, and a lead-in 1b which is located above the sliding contact region 1a or disposed toward a top (recess 1C) of the semi-spherical shoe. The lead-in 1b has a diameter D2 which is greater than the diameter D1 of the sliding contact region 1a, thereby allowing a clearance 8 to be produced between lead-in 1b and an opposing portion of the semi-spherical recess 2B in the piston 2. A reservoir of lubricant oil in a space 4 formed between the semi-spherical recess 2B and the recess 1C of the semi-spherical shoe 1 is introduced into the sliding contact region 1a through the clearance 8. A sliding system having an excellent sliding response over the prior art is provided.

    Abstract translation: 半球形鞋1包括半球形表面1A和平坦端面1B。 半球形表面1A包括与形成在活塞2中的半球形凹部2B滑动接触的滑动接触区域1a和位于滑动接触区域1a上方或朝向滑动接触区域1a设置的引入口1b 半球形鞋的顶部（凹部1C）。 导入孔1b的直径D2大于滑动接触区域1a的直径D1，从而允许在引入件1b和活塞中的半球形凹部2B的相对部分之间产生间隙8 在半球形凹部2B和半球形鞋1的凹部1C之间形成的空间4中的润滑油储存器通过间隙8被引入到滑动接触区域1a中。滑动系统具有优异的滑动 提供了现有技术的响应。

    Hardfacing for progressing cavity pump rotors
    15.
    发明授权
    Hardfacing for progressing cavity pump rotors 失效
    用于进行腔泵转子的表面硬化

    公开(公告)号：US5498142A

    公开(公告)日：1996-03-12

    申请号：US454589

    申请日：1995-05-30

    Applicant: Robert A. R. Mills

    Inventor： Robert A. R. Mills

    IPC: F04C2/107 ,  F01C1/10 ,  F01C21/00

    CPC classification number: F04C2/1075 ,  F04C2230/00 ,  F04C2230/91 ,  F05C2201/0406 ,  F05C2201/0409 ,  F05C2201/0433 ,  F05C2203/0813 ,  F05C2203/0821 ,  F05C2203/0826 ,  Y10T428/12576 ,  Y10T428/31678

    Abstract: A hardfacing for downhole progressing cavity pumps is disclosed as well as a method for producing same. The hardfacing consists of a metal carbide layer applied to the ferrous pump rotor body by way of plasma spraying and a top layer of metallic material having a lower hardness than the metal carbide. The metal carbide layer has a grainy surface with a plurality of peaks and intermediate depressions, the peaks being formed by metal carbide grains at the surface of the metal carbide layer. The thickness of the top layer is adjusted such that the depressions between the peaks of the metal carbide layer are completely filled thereby providing the rotor with a metal carbide hardfacing of significantly reduced surface roughness. In the process of the invention, the pump rotor, which may be provided with a molybdenum bonding layer, is plasma coated with the metal carbide and the resulting carbide layer is covered with the metallic material top layer. The top layer is polished either until the dimensions thereof are within the tolerances acceptable for the finished rotor or until a majority of the peaks of the carbide layer are exposed. The hardfacing significantly increases the service life of the rotor and stator of downhole progressing cavity pumps.

    Abstract translation: 公开了一种用于井下前进腔泵的硬化面及其制造方法。 表面硬化由通过等离子喷涂施加到铁水泵转子体上的金属碳化物层和具有比金属碳化物低的硬度的金属材料顶层组成。 金属碳化物层具有多个峰和中间凹陷的颗粒状表面，该峰由金属碳化物层表面的金属碳化物颗粒形成。 调整顶层的厚度，使得金属碳化物层的峰之间的凹陷被完全填充，从而为转子提供显着降低的表面粗糙度的金属碳化物表面硬化。 在本发明的方法中，可以设置有钼粘合层的泵转子被等离子体涂覆有金属碳化物，并且所得到的碳化物层被金属材料顶层覆盖。 抛光顶层，直到其尺寸在成品转子可接受的公差内，或直到碳化物层的大部分峰暴露。 表面硬化显着增加了井下前进腔泵的转子和定子的使用寿命。

    Double-ended ceramic helical-rotor expander
    16.
    发明授权
    Double-ended ceramic helical-rotor expander 失效
    双端陶瓷螺旋转子膨胀机

    公开(公告)号：US5393209A

    公开(公告)日：1995-02-28

    申请号：US38421

    申请日：1993-03-29

    Applicant: Peter B. Mohr ,  Wendell B. Myers

    Inventor： Peter B. Mohr ,  Wendell B. Myers

    IPC: F01C1/08 ,  F01C1/16 ,  F01C11/00 ,  F01C21/00 ,  F01C1/24

    CPC classification number: F01C1/16 ,  F01C1/082 ,  F01C11/002 ,  F01C21/003 ,  F05C2201/0409 ,  F05C2201/90 ,  F05C2203/0843

    Abstract: A ceramic helical rotor expander using a double-ended or tandem herringbone type rotor arrangement with bearing and seal assemblies remote from the hot gas inlets and especially capable of operating at an inlet temperature of above 1100.degree. C. The rotors are solid or hollow and bonded to hollow metal shafts, and mounted in a composite or simple prismatic casing. The rotors, casing and shafts are constructed from low expansivity materials. In the preferred embodiment the rotors are constructed of silicon nitride and the shafts constructed of an molybdenum alloy, with the metal shafts being supported in bearings and secured to synchronizing gears. The rotors and casing may be provided with coolant channels therein, and are constructed to eliminate the problem of end leakages at inlet temperature and pressure, and the need for high temperature bearings and seals.

    Abstract translation: 一种陶瓷螺旋转子膨胀机，使用双端或串联人字形转子装置，其轴承和密封组件远离热气体入口，特别是能够在高于1100℃的入口温度下运行。转子是固体或中空和结合的 到中空金属轴，并且安装在复合或简单的棱柱形壳体中。 转子，套管和轴由低膨胀材料构成。 在优选实施例中，转子由氮化硅和由钼合金构成的轴构成，其中金属轴被支撑在轴承中并固定到同步齿轮。 转子和壳体可以在其中设置有冷却剂通道，并且被构造成消除入口温度和压力下的端部泄漏的问题，以及对高温轴承和密封件的需要。

    ROTARY COMPRESSOR
    20.
    发明申请
    ROTARY COMPRESSOR 有权
    旋转式压缩机

    公开(公告)号：US20160138593A1

    公开(公告)日：2016-05-19

    申请号：US14898042

    申请日：2014-01-29

    Applicant: FUJITSU GENERAL LIMITED

    Inventor： Junya TANAKA ,  Kenji KOMINE

    IPC: F04C18/356 ,  F04C29/12

    CPC classification number: F04C18/3564 ,  C23C8/04 ,  C23C8/26 ,  C23C28/044 ,  C23C28/046 ,  F01C21/0809 ,  F04C23/001 ,  F04C23/008 ,  F04C29/12 ,  F04C2230/91 ,  F04C2230/92 ,  F05C2201/0406 ,  F05C2201/0409 ,  F05C2201/0439 ,  F05C2201/0448 ,  F05C2201/046 ,  F05C2201/0466 ,  F05C2203/0808 ,  F05C2203/083 ,  F05C2203/0882 ,  F05C2253/12

    Abstract: A rotary compressor includes a compressing unit including: an annular cylinder; an end plate having a bearing unit, and closing an end portion of the cylinder; an annular piston fitted in a rotation shaft in the bearing unit, performing an orbital motion inside the cylinder, and forming an operation chamber with the cylinder inner wall; and a vane protruding from a groove of the cylinder to the operation chamber, coming into contact with the annular piston, and partitioning the operation chamber into an inlet chamber and a compression chamber. The vane is formed of steel and has a diamond-like carbon layer on a sliding surface with respect to the annular piston. The annular piston is formed of Ni—Cr—Mo cast iron to which 0.15 wt % to 0.45 wt % of phosphorus is added, or formed of cast iron or steel, and has an iron nitride layer on its outer circumferential surface.

    Abstract translation: 旋转式压缩机包括：压缩单元，包括：环形气缸; 端板，其具有轴承单元，并且封闭所述气缸的端部; 安装在所述轴承单元中的旋转轴中的环形活塞，在所述气缸内部进行轨道运动，并且与所述气缸内壁形成操作室; 以及从所述气缸的槽突出到所述操作室的叶片，与所述环形活塞接触，并将所述操作室分隔成入口室和压缩室。 叶片由钢形成，并且在相对于环形活塞的滑动表面上具有类金刚石碳层。 环形活塞由添加了0.15重量％至0.45重量％的磷或由铸铁或钢制成的Ni-Cr-Mo铸铁形成，并且在其外圆周表面上具有氮化铁层。

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