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Title: Rotary union for use with ultrasonic thickness measuring probe

Abstract

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 ofmore » the rotary union body. 5 figs.« less

Inventors:
Issue Date:
OSTI Identifier:
7278072
Patent Number(s):
5146786 A
Application Number:
PPN: US 7-660183
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-087403
DOE Contract Number:  
AC12-76SN00052
Resource Type:
Patent
Resource Relation:
Patent File Date: 7 Feb 1991
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 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; 200104* - Fossil-Fueled Power Plants- Components; 220200 - Nuclear Reactor Technology- Components & Accessories; 420500 - Engineering- Materials Testing

Citation Formats

Nachbar, H.D. Rotary union for use with ultrasonic thickness measuring probe. United States: N. p., 1992. Web.
Nachbar, H.D. Rotary union for use with ultrasonic thickness measuring probe. United States.
Nachbar, H.D. Tue . "Rotary union for use with ultrasonic thickness measuring probe". United States.
@article{osti_7278072,
title = {Rotary union for use with ultrasonic thickness measuring probe},
author = {Nachbar, H.D.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {9}
}