INTEGRATED CONTROLLER OF HEATING WATER TEMPERATURE

摘要

The solution falls within the branch of automated regulation of steam turbines, in this case extraction steam turbines. Its purpose consists in performing complicated regulations of several armatures, or groups of armatures, with a single regulator. Its principle consists in regulation of temperature of heating water on the outlet of heating water heaters - OTV, which are heated by the extraction steam from the steam turbine. The regulation of the temperature of the heating water is provided for by a single temperature regulator, acting with its signal on by-pass as well as the extraction armature of the steam turbine. A regulator (11) of pressure in bleeding, a signal distributor (12), an inclusive element (13), a circuit (14) of the set pressure value, and a pressure switch (15) constitute a module, which maintains a constant heating steam pressure. The output signal from this module acts across a module (2) of manual control on the converters (61, 62, 63), which control the regulation armatures (7, 8, 9). The first limiting regulators (31, 32, 33) and the second limiting regulators (41, 42, 43) will provide for the intervention of regulation armatures (7, 9), when the steam pressure in OVT or in the turbine stage exceeds the permitted values, even in the case of manual control.<IMAGE>