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US 4,358,682 AGranted
Neutron interface detector
AssigneeShell Oil Company
InventorsAlexander Telfer, Dale H. McMillan
Life of this patent
Estimating the term…
Abstract
A fixed neutron backscatter level detector for hydrogen containing liquids or solids. The detector comprises a source of fast neutrons and a thermal neutron detector disposed to measure thermal neutrons that are backscattered by the liquids or solids.
Claims6
An apparatus for measuring the level of a hydrogen containing material in a closed vessel, said apparatus comprising:
- a tubular member having a closed end that is positioned in said vessel;
- a probe comprising a source of fast neutrons and means for detecting thermal neutrons, said probe being sized so that it can be inserted in said tubular member;
- a suspension means coupled to said probe to raise and lower said probe in said tubular member;
- and counting means coupled to said detecting means for counting the number of thermal neutrons detected.
1 more element
An apparatus for measuring the level of a hydrogen containing material in a closed vessel, said apparatus comprisng:
- a housing having two parallel bores formed therein;
- means for mounting said housing to the outer wall of said vessel at the desired level of the material in said vessel with said two bores being substantially parallel to the surface of the material in said vessel;
- a source of fast neutrons positioned in one of said bores;
- means for detecting slow neutrons, said detecting means being positioned in the other bore of said housing;
- and counting means coupled to said detecting means for counting the number of slow neutrons detected.
2 more elements
Dependencies are inferred from the claim text.