Liquid level detector

Patent · 31 December 1985

OSTI ID:865807

Grasso, Albert P.

A liquid level detector for low pressure boilers. A boiler tank, from which apor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

• Research Organization: United Technologies Corp., South Windsor, CT (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-77ET11302
• Assignee: United States of America as represented by U.S. Department of Energy (Washington, DC)
• Patent Number(s): 4,582,025
• Application Number: 06/581,933
• OSTI ID: 865807
• Country of Publication: United States
• Language: English

Related Subjects

/122/73/
activate
adding
allowing
ambient
ambient temperature
apor
blocks
boiler
boilers
causing
connected
cool
desired
detector
device
device located
entry
escapes
example
exits
falls
heating
level
level detector
liquid
liquid level
located
main
means
normally
pressure
provided
sensitive
sensitive device
steam
supply
supply means
tank
temperature
temperature sensitive
therethrough
tube
tube connected
vapor
vertical
via