Radiant energy – Radiation tracer methods – Radioactive tracer methods
Patent
1976-02-10
1977-05-31
Dixon, Harold A.
Radiant energy
Radiation tracer methods
Radioactive tracer methods
250364, 250432R, G01T 1161
Patent
active
040271579
ABSTRACT:
A device for measuring the wear of a radioactively marked machine component by sensing the presence of radioactive wear fragments in a lubricant has a flow-through chamber; an inlet for tangentially introducing the lubricant into the flow-through chamber; a radiation detector at least partially surrounded by the flow-through chamber; and an outlet for removing the lubricant from the flow-through chamber. The device further includes an outer hollow cylinder having a closed radial end face; an inner hollow cylinder having a closed radial end face and an outer diameter which is smaller than the inner diameter of the outer hollow cylinder. The inner hollow cylinder is supported coaxially within the outer hollow cylinder and the space between the two cylinders constitutes the flow-through chamber. The cylinders are supported in a substantially horizontal orientation. There is further provided a vacuum vessel positioned in the inner hollow cylinder; the radiation detector is supported within the vacuum vessel coaxially with the cylinder axis. The radiation detector is surrounded by a heat conducting arrangement within the vacuum vessel for transmitting heat generated by the radiation detector into the outer environment. The cylinders are surrounded by a radiation shield assembly formed off a first shield part protecting the detector from natural environmental radiation and a second shield part protecting the detector from the radioactive radiation emitted by the machine component.
REFERENCES:
patent: 2738426 (1956-03-01), Hurst
patent: 2939011 (1960-05-01), Bisso et al.
patent: 2957986 (1960-10-01), Quigg
patent: 3953737 (1976-04-01), Neeb et al.
Gerve Andreas
Haury Hartmut
Lausch Wolfram
Dixon Harold A.
Gesellschaft fur Kernforschung m.b.H.
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