Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1977-09-22
1979-06-26
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
48 87, 73358, 340590, G01R 3102, G01K 1106, B01J 300
Patent
active
041594479
ABSTRACT:
A system for detecting faults in the wall of a high-temperature pressure vessel, such as a fuel gasifier. The wall comprises an outer metallic shell having an inner refractory lining, together with cooling tubes extending along the refractory lining. In order to detect a fault, such as a rupture in a cooling tube and resultant melting of the refractory in the vicinity of the fault, one or more electrical conductors are embedded in the refractory and connected at their opposite ends to an external energizing circuit such that when the refractory melts, so also will the conductor, thereby breaking the circuit to indicate the existence of the fault.
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patent: 2686909 (1954-08-01), Poulson
patent: 2691698 (1954-10-01), Schmidt
patent: 2990542 (1961-06-01), Seitz
patent: 3406384 (1968-10-01), Hartman et al.
patent: 3418207 (1968-12-01), Becker et al.
patent: 3509942 (1970-05-01), Lindberg
patent: 3588689 (1971-06-01), Crawford
patent: 3721898 (1973-03-01), Dragoumis et al.
patent: 4013427 (1977-03-01), Gernhardt et al.
Danguillier Wilhelm
Gernhardt Paul
Grams Wolfgang
Pohl Siegfried
Dr. C. Otto & Comp. G.m.b.H.
Murray Thomas H.
Poff Clifford A.
Saabergwerke, A.G.
Strecker Gerard R.
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