| 摘要 |
An apparatus detects whether a bearing has exceeded a critical temperature. The bearing is of the type that is packed within a housing of a bearing assembly. The apparatus includes a detector body, a plug material, a pneumatic conduit and a mechanism capable of warning of either a change in pressure or a characteristic increase in the flow of gas or both. Designed to be incorporated within the housing, the detector body defines through itself a passage. Composed of a material that melts when exposed to a temperature that exceeds the critical temperature, the plug material is used to fill and seal a first end of the passage. Connected to a leading end of the pneumatic conduit is a source of pressurized gas. Connected to a terminal end of the pneumatic conduit is a second end of the passage. From its second end via the pneumatic conduit, the passage receives, and is pressurized by, the gas from the source of pressurized gas. Should the plug material melt, the mechanism will warn of the resulting drop in pressure, and/or the characteristic increase in the flow of gas, caused by resulting opening of the passage of the detector body to atmosphere.
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