公开(公告)号：US20110186566A1

公开(公告)日：2011-08-04

申请号：US13017669

申请日：2011-01-31

Applicant: James COULAS ,  Robert A.R. MILLS

Inventor： James COULAS ,  Robert A.R. MILLS

IPC: H05B6/10

CPC classification number: H05B6/102 ,  C21D1/42 ,  C21D9/0068 ,  C21D9/28 ,  C21D11/00 ,  F04B15/023 ,  F04B53/00 ,  F04C2/1073 ,  F04C15/0096 ,  F04C2230/41 ,  F04C2240/20 ,  H05B6/40 ,  Y02P10/253

Abstract: Embodiments of the invention provide a system and method for induction heating a helical rotor of a progressing cavity pump in order to reduce the surface roughness of the rotor. In order to heat the rotor most evenly, it is desired to space the coil as closely around the rotor as possible. The invention provides a mechanism for threading the helical rotor through an induction coil having an interior diameter which is less than the major diameter of the rotor. The induction coil may include one loop and overlapping ends. The rotor to be heated is rotated about its longitudinal axis and advanced axially through the coil as it rotates. The axial speed and rotational speed are synchronized so that the rotor moves one pitch through the coil for each complete rotation.

Abstract translation: 本发明的实施例提供了一种用于感应加热前进腔泵的螺旋转子的系统和方法，以便减小转子的表面粗糙度。 为了最均匀地加热转子，期望将线圈尽可能靠近转子放置。 本发明提供了一种用于使螺旋转子穿过具有小于转子主直径的内径的感应线圈的机构。 感应线圈可以包括一个环和重叠端。 待加热的转子围绕其纵向轴线旋转并在其旋转时轴向前进通过线圈。 轴向速度和旋转速度是同步的，因此每转动一次，转子将通过线圈移动一个节距。