Conduit sensor device with magnetic shunt and process for modifying a magnetic field

摘要

A conduit sensor device comprises a first end portion, a second end portion, a first magnet rotor assembly residing proximate the first end portion of the device and rotatable between first and second positions, a second magnet rotor assembly residing proximate the second end portion of the device and rotatable between first and second positions. The first magnet rotor assembly includes a first plurality of magnets axially arranged about a first axis. The first magnet rotor assembly includes a first top portion and a first bottom portion securing the first plurality of magnets within the first magnet rotor assembly. The second magnet rotor assembly includes a second plurality of magnets axially arranged about a second axis. The second magnet rotor assembly includes a second top portion and a second bottom portion securing the second plurality of magnets within the second magnet rotor assembly.

主权项

1. A conduit sensor device, comprising:
said device includes a first end portion and a second end portion; a first magnet rotor assembly resides proximate said first end portion of said device and is rotatable between first and second positions; a second magnet rotor assembly resides proximate said second end portion of said device and is rotatable between first and second positions; said first magnet rotor assembly includes a first plurality of magnets axially arranged about a first longitudinal axis, said first magnet rotor assembly includes a first top portion and a first bottom portion, said first top and bottom portions secure said first plurality of magnets within said first magnet rotor assembly; said second magnet rotor assembly includes a second plurality of magnets axially arranged about a second longitudinal axis, second magnet rotor assembly includes a second top portion and a second bottom portion, said second top and bottom portions secure said second plurality of magnets within said second magnet rotor assembly; said first position of said first magnet rotor assembly orients the north pole of each of said first plurality of magnets radially outwardly; said first position of said second magnet rotor assembly orients the south pole of each of said second plurality of magnets radially outwardly; said second position of said first magnet rotor assembly orients the north pole of each of said first plurality of magnets at an angle of 90° with respect to said first position; said second position of said second magnet rotor assembly orients the north pole of each of said second plurality of magnets at an angle of 90° with respect to said first position; a first drive mechanism for rotating said first magnet rotor assembly from said first position to said second position and a second drive mechanism for rotating said second magnet rotor assembly from said first position to said second position; said first drive mechanism includes a first vertical shunt worm for rotating said first magnet rotor assembly; and, said second drive mechanism includes a second vertical shunt worm for rotating said second magnet rotor assembly.