US 11,662,230 B2Granted

Recorder for shaft rotation verification

AssigneeSaudi Arabian Oil Company

InventorsMansour Mohammed Al-Saleh, Qasem A. Fandem, Khalid H. Al-Mutawa

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Abstract

A recorder for documenting that a shaft in a rotating machine has been rotated while the rotating machine is stored or otherwise out of service. The recorder includes an elongated strip that is wound on a reel disposed adjacent the shaft. The reel is rotatable about an axle that is spaced away from the shaft. A free end of the strip is secured to an outer surface of the shaft and spools onto the shaft as the shaft is rotated, and which unwinds the strip from the reel. Markings are on the strip representing distance from the free end, which visually indicate occurrence and amount of shaft rotation. Types of markings include different colors or patterns, and which change at distances corresponding to shaft circumference. Alternatively, the markings are metered increments illustrating linear distance.

Claims22

Dependent claims

A recorder for use with a rotating machine the recorder comprising:

the rotating machine comprising,
a shaft,
a housing, and
a cylindrically shaped end plate that projects from a lateral side of the housing and that circumscribes the shaft;
and
a frame assembly comprising,
a base having a lower surface configured complementary to an upper surface of the end plate, and
a reel axle supported on the base;
a reel rotatably mounted on the reel axle and that is coaxial with the shaft;
a strip of recording medium having a portion selectively wound onto the reel and a free end coupled to the shaft;
markings on a surface of the recording medium that reflect a distance from the free end and that visually indicates occurrence and an amount of rotation of the shaft in the time since the free end was attached to the shaft;
and
a pedestal mounted on an upper surface of the base, and the pedestal mounted to an end of the reel axle, so that when the reel is mounted to the reel axle and the strip is attached to the shaft, visible markings on the strip indicate the amount of shaft rotation.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/866,301Filed 4 May 2020
Published: US 2021/0341315 A14 Nov 2021
Granted: 30 May 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G01D 5/39
Characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light: scanning a visible indication of the measured value…
G01P 3/38
Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light: using photographic means
G01D 5/145
Using Hall-effect devices: influenced by the relative movement between the Hall device and magnetic fields
G01D 5/347
The beams of light being detected by photocells: using displacement encoding scales