skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Measurement of the differential pressure of liquid metals

Abstract

This patent relates to an improved means for measuring the differential pressure between any two points in a process liquid metal coolant loop, wherein the flow of liquid metal in a pipe is opposed by a permanent magnet liquid metal pump until there is almost zero flow shown by a magnetic type flowmeter. The pressure producing the liquid metal flow is inferred from the rate of rotation of the permanent magnet pump. In an alternate embodiment, a differential pressure transducer is coupled to a process pipeline by means of high-temperature bellows or diaphragm seals, and a permanent magnet liquid metal pump in the high-pressure transmission line to the pressure transducer can be utilized either for calibration of the transducer or for determining the process differential pressure as a function of the magnet pump speed. (auth)

Inventors:
Issue Date:
OSTI Identifier:
4130399
Patent Number(s):
3902369
Assignee:
to U.S. Energy Research and Development Administration
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
NSA Number:
NSA-33-011276
Resource Type:
Patent
Resource Relation:
Patent File Date: 1974 May 01; Other Information: G01L9/00. Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N77500* -Reactors-Power Reactors, Breeding; N46400 - Instrumentation-Miscellaneous Instruments; 210500* -Nuclear Power Plants-Power Reactors, Breeding; *LIQUID METALS- PRESSURE MEASUREMENT; *LMFBR TYPE REACTORS- REACTOR COOLING SYSTEMS; *PRESSURE GAGES- DESIGN; ELECTROMAGNETIC PUMPS; FEEDBACK; FLOWMETERS

Citation Formats

Metz, H J. Measurement of the differential pressure of liquid metals. United States: N. p., 1975. Web.
Metz, H J. Measurement of the differential pressure of liquid metals. United States.
Metz, H J. Mon . "Measurement of the differential pressure of liquid metals". United States.
@article{osti_4130399,
title = {Measurement of the differential pressure of liquid metals},
author = {Metz, H J},
abstractNote = {This patent relates to an improved means for measuring the differential pressure between any two points in a process liquid metal coolant loop, wherein the flow of liquid metal in a pipe is opposed by a permanent magnet liquid metal pump until there is almost zero flow shown by a magnetic type flowmeter. The pressure producing the liquid metal flow is inferred from the rate of rotation of the permanent magnet pump. In an alternate embodiment, a differential pressure transducer is coupled to a process pipeline by means of high-temperature bellows or diaphragm seals, and a permanent magnet liquid metal pump in the high-pressure transmission line to the pressure transducer can be utilized either for calibration of the transducer or for determining the process differential pressure as a function of the magnet pump speed. (auth)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1975},
month = {9}
}