Apparatus, system and method for measuring straightness of components of rotating assemblies

摘要

An apparatus, system and method for measuring straightness of components of rotating assemblies are described. A digital mapping system for measuring the straightness of a shaft of an electric submersible pump comprises a light emitting micrometer. A method for measuring the straightness of components of rotating assemblies comprises providing a controller with acceptable deviation parameters for a component to be measured, surface mapping the component using a light emitting micrometer, electronically identifying bent locations on the component that exceed the acceptable deviation parameters, and measuring circumferentially at the bent locations with the light emitting micrometer to determine the magnitude of the bend. An apparatus for measuring a component of a rotating assembly comprises a light emitting micrometer configured to map the surface of a component and a range finder coupled to the micrometer for determining the location of the micrometer during measurement.

主权项

1. A system for measuring the straightness of an electric submersible pump (ESP) shaft, the system comprising:
a work surface of known flatness; a pair of bearings elevated above the work surface; an ESP shaft to be measured, suspended inside the elevated bearings and rotatable within the elevated bearings; a light emitting micrometer moveably attached to the work surface, the light emitting micrometer comprising:
a light emitter on a first side of the ESP shaft that when activated emits a sheet of light;a light receiver on a second side of the ESP shaft opposite the light emitter such that the ESP shaft comes between the light emitter and the light receiver and produces a shadow when the light emitter is activated; and wherein the light receiver detects the shadow; a computer electronically coupled to the light emitting micrometer such that data flows between the light emitting micrometer and the computer, and the computer has an elastic plastic model for a material composition of the ESP shaft stored thereon; a hydraulic cylinder electronically coupled to the computer and mechanically coupled to the light emitting micrometer; and a digital display electronically coupled to the computer; wherein the computer calculates one of a heat, a force or a combination thereof needed to straighten a bend in the ESP shaft using the elastic plastic model, and wherein the hydraulic cylinder straightens the bend in the ESP shaft by applying the one of the heat, the force or the combination thereof so calculated.