公开(公告)号：CA3115512A1

公开(公告)日：2021-10-21

申请号：CA3115512

申请日：2021-04-19

Applicant: ROPER PUMP COMPANY

Inventor： REYNOLDS CODY RICHARD ,  COGHLAN EDMOND ,  ANDERSON TYSON BENTLEY

IPC: F04C2/107 ,  F03C2/00 ,  F04C13/00 ,  F04C15/00

Abstract: A stator segment is provided for a helical gear device. The stator segment includes a stator tube and modular stator inserts. The stator tube has an inner profile with at least two internal sides that extend longitudinally along an interior of the stator tube. The modular stator inserts each have an outer profile that substantially matches and fits within the inner profile of the stator tube. The modular stator inserts also each have an interior helical profile that defines a central opening. The modular stator inserts are configured to be removably inserted longitudinally into the stator tube along the inner profile of the stator tube. The inner profile aligns the modular stator inserts to form a continuous helical chamber and prevents rotation of the modular stator inserts relative to the stator tube.

公开(公告)号：CA2889612C

公开(公告)日：2019-09-10

申请号：CA2889612

申请日：2013-11-06

Applicant: ROPER PUMP COMPANY

Inventor： COGHLAN EDMOND ,  ANDERSON TYSON BENTLEY ,  PURCELL JOHN EUGENE ,  RIVARD ZACHARIAH PAUL

IPC: F04C2/107

Abstract: A stator for a helical gear device is formed from multiple rigid disks and support rings bonded to the disks. Each disk forms part of a profile having equally spaced or opened lobes which interact with the convex portions of rotor lobes. The disks are bonded to one another to form a disk stack defining a helically convoluted elongated chamber therein. The support rings are fixed concentrically against respective end disks of the disk stack. The rings have an inside diameter substantially equal to the major diameter of the central aperture defined by the radially extending lobes of the disks. As a rotor rotates and nutates inside the stator, it is supported at both ends of the disk stack by the support rings touching tips of the rotor lobes. Thus the full force of the rotor's operational inertia is not borne by the disks alone, thereby increasing their life.