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Title: Apparatus having inductively coupled coaxial coils for measuring buildup of slay or ash in a furnace

Abstract

The buildup of slag or ash on the interior surface of a furnace wall is monitored by disposing two coils to form a transformer which is secured adjacent to the inside surface of the furnace wall. The inductive coupling between the two coils of the transformer is affected by the presence of oxides of iron in the slag or ash which is adjacent to the transformer, and the application of a voltage to one winding produces a voltage at the other winding that is related to the thickness of the slag or ash buildup on the inside surface of the furnace wall. The output of the other winding is an electrical signal which can be used to control an alarm or the like or provide an indication of the thickness of the slag or ash buildup at a remote location.

Inventors:
 [1];  [2]
  1. Pittsburgh, PA
  2. Bethel Park, PA
Issue Date:
Research Org.:
USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
OSTI Identifier:
866959
Patent Number(s):
4829246
Assignee:
United States Department of Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; inductively; coupled; coaxial; coils; measuring; buildup; slay; ash; furnace; slag; interior; surface; wall; monitored; disposing; form; transformer; secured; adjacent; inside; inductive; coupling; affected; presence; oxides; iron; application; voltage; winding; produces; related; thickness; output; electrical; signal; control; alarm; provide; indication; remote; location; inductively coupled; inside surface; electrical signal; interior surface; remote location; inductive coupling; furnace wall; coaxial coil; /324/110/

Citation Formats

Mathur, Mahendra P, and Ekmann, James M. Apparatus having inductively coupled coaxial coils for measuring buildup of slay or ash in a furnace. United States: N. p., 1989. Web.
Mathur, Mahendra P, & Ekmann, James M. Apparatus having inductively coupled coaxial coils for measuring buildup of slay or ash in a furnace. United States.
Mathur, Mahendra P, and Ekmann, James M. Sun . "Apparatus having inductively coupled coaxial coils for measuring buildup of slay or ash in a furnace". United States. https://www.osti.gov/servlets/purl/866959.
@article{osti_866959,
title = {Apparatus having inductively coupled coaxial coils for measuring buildup of slay or ash in a furnace},
author = {Mathur, Mahendra P and Ekmann, James M},
abstractNote = {The buildup of slag or ash on the interior surface of a furnace wall is monitored by disposing two coils to form a transformer which is secured adjacent to the inside surface of the furnace wall. The inductive coupling between the two coils of the transformer is affected by the presence of oxides of iron in the slag or ash which is adjacent to the transformer, and the application of a voltage to one winding produces a voltage at the other winding that is related to the thickness of the slag or ash buildup on the inside surface of the furnace wall. The output of the other winding is an electrical signal which can be used to control an alarm or the like or provide an indication of the thickness of the slag or ash buildup at a remote location.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}