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US 4,046,512 AGranted
Device for indicating overheating in generators
AssigneeWestinghouse Electric Corp.
InventorsThomas D. Kaczmarek, David C. Phillips
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Abstract
The occurrence of excessively high temperatures in areas of a generator exposed to a cooling gas stream is visually indicated by passing a portion of the gas stream through an indicator device which comprises a filter holder containing a gas-permeable, particulate-collecting filter on which is an indicator which produces a visual effect when contacted by particulates. A valve controls the flow of the gas to the device and is opened by a monitor when the monitor detects particulates in the gas stream.
Claims7
In combination,
- A. a generator having a cooling gas stream passing therethrough;
- B. an indicator device for indicating the presence of particulates in said gas stream comprising
- 1. a filter holder having a gas inlet and a gas outlet, connected so that at least a portion of said cooling gas stream can pass therethrough;
- 2. a gas-permeable, particulate-collecting filter within said filter holder, the surface of said filter which faces said gas inlet being divided into at least two areas;
- and
- 3. at least two different chemical indicators, each on a different area of said filter, each chemical indicator producing a visual effect when contacted by particulates;
- and
- C. a valve between said generator and said cooling gas stream for controlling its flow through said indicator device, whereby particulates in said gas stream can collect on said filter producing a visual effect.
5 more elements
Dependencies are inferred from the claim text.