Rotary union for use with ultrasonic thickness measuring probe
A rotary union for rotatably supporting an ultrasonic probe operable to nondestructively measure the thickness of steam generator tubes to determine the amount of corrosion experienced by the tubes includes a stationary body having a bore therethrough and an outlet drain, and a fitting rotatably mounted within the upper end of the body. The fitting has a bore aligned with the bore of the body. An electrical cable positioned within a water supply tube in an annular arrangement passes through the bore of the body and the bore of the fitting. This annular arrangement, in turn, is positioned within a connector element which extends outwardly from the fitting bore and is connected to the ultrasonic probe. An elastomeric lower bushing seals the annular arrangement to the lower end of the rotary union body and an elastomeric upper bushing seals the connector element to the fitting to permit the connector element and the ultrasonic probe connected thereto to rotate with the fitting relative to the body. The lower and upper bushings permit water to be passed through the annular arrangement and into the ultrasonic probe and thereafter discharged between the annular arrangement and the connector element to the outlet drain of the rotary union body. 5 figs.
- DOE Contract Number:
- AC12-76SN00052
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 5146786; A
- Application Number:
- PPN: US 7-660183
- OSTI ID:
- 7278072
- Resource Relation:
- Patent File Date: 7 Feb 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
42 ENGINEERING
PROBES
SUPPORTS
STEAM GENERATORS
TUBES
THICKNESS
ULTRASONIC TESTING
ANNULAR SPACE
CORROSION
MONITORING
ACOUSTIC TESTING
BOILERS
CHEMICAL REACTIONS
CONFIGURATION
DIMENSIONS
MATERIALS TESTING
MECHANICAL STRUCTURES
NONDESTRUCTIVE TESTING
SPACE
TESTING
VAPOR GENERATORS
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420500 - Engineering- Materials Testing