초록 ▼

The device is used for detecting leakages of steam contained in hollow bodies, particularly in pipes (26). It is intended for tending high temperature steam conduits. The hollow body is surrounded by a thermal insulation (24) containing a measuring chamber (28). A temperature sensor (32) and a steam

The device is used for detecting leakages of steam contained in hollow bodies, particularly in pipes (26). It is intended for tending high temperature steam conduits. The hollow body is surrounded by a thermal insulation (24) containing a measuring chamber (28). A temperature sensor (32) and a steam detector (9, 18) are disposed within that measuring chamber. Signalling apparatus announces the simultaneous presence of steam and temperature drop. When the pressurized steam contained in the hollow body or in the conduit happens to leak, it expands thereby producing a temperature drop. The sensing of both effects, i.e. the temperature drop and the presence of vapor avoids erroneous warnings.

대표청구항 ▼

A device for detecting steam leaking from hollow bodies above ground including pipes for gauge pressure steam, comprising: thermal insulation disposed around a said hollow body, there being between said insulation and body a space for measuring purposes, temperature change sensor means disposed in s

A device for detecting steam leaking from hollow bodies above ground including pipes for gauge pressure steam, comprising: thermal insulation disposed around a said hollow body, there being between said insulation and body a space for measuring purposes, temperature change sensor means disposed in said space for providing at least one output signal response to a predetermined change in temperature in said space, steam detector means having at least inlet means disposed in said space for providing at least one output signal in the event steam is sensed by the detector means in said space, said steam detector means including at least one steam detector having a capacitor-like structure including a porous insulating material able to take up steam through said inlet means, and warning means connected to receive said output signals from both the temperature change sensor means and the steam presence detector means for providing an output only upon receiving a said output signal from each simultaneously.