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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.« less

Inventors:
 [1]
  1. Schenectady, NY
Publication Date:
Research Org.:
Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY
OSTI Identifier:
868462
Patent Number(s):
US 5146786
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC12-76SN00052
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
rotary; union; ultrasonic; thickness; measuring; probe; rotatably; supporting; operable; nondestructively; measure; steam; generator; tubes; determine; amount; corrosion; experienced; stationary; bore; therethrough; outlet; drain; fitting; mounted; upper; aligned; electrical; cable; positioned; water; supply; tube; annular; arrangement; passes; connector; element; extends; outwardly; connected; elastomeric; bushing; seals; permit; thereto; rotate; relative; bushings; passed; thereafter; discharged; rotatably supporting; supply tube; connected thereto; rotary union; measuring probe; bore therethrough; rotatably mounted; steam generator; water supply; electrical cable; ultrasonic probe; ultrasonic thickness; extends outwardly; thickness measuring; extends outward; generator tube; probe connected; corrosion experienced; /73/

Citation Formats

Nachbar, Henry D. Rotary union for use with ultrasonic thickness measuring probe. United States: N. p., 1992. Web.
Nachbar, Henry D. Rotary union for use with ultrasonic thickness measuring probe. United States.
Nachbar, Henry D. Wed . "Rotary union for use with ultrasonic thickness measuring probe". United States. https://www.osti.gov/servlets/purl/868462.
@article{osti_868462,
title = {Rotary union for use with ultrasonic thickness measuring probe},
author = {Nachbar, Henry 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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