Pressurized steam boilers and their control

Details Pressurized steam boilers and their control Pressurized steam boilers and their control

2007-07-31

2007-07-31

Wilson, Gregory (Department: 3749)

Liquid heaters and vaporizers

Safety devices

C122S506000, C122S448100

Reexamination Certificate

active

10416930

ABSTRACT:
A method of controlling the operation of a pressurised steam boiler (50) heated by a burner (20), which includes the steps of a) monitoring the level of water in the boiler (50), b) monitoring the pressure of steam in the boiler (50), c) monitoring the firing rate of the burner (20), and d) controlling the flow rate of water into the boiler (50) having regard to the signals resulting from a) and b) and, at least for some signal conditions, also having regard to signals resulting from c). The level of water is detected by a pair of capacitance probe assemblies (58A and58B).

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