TURBO GENERATOR PLANT CONDENSATION TURBINE OPERATING MODE DETERMINING METHOD DURING ITS OPERATION OR BENCH TESTS Russian patent published in 2019 - IPC G01M15/00 F15B19/00 

FIELD: machine building.

SUBSTANCE: invention relates to the power engineering and can be used in diagnostic systems operating on the turbo generator plants condensing turbines saturated steam or fixed overheating steam during their operation or bench tests. To ensure the turbo generator plant condensation turbine safe operation during its operation or bench tests, the steam pressure at the inlet to the turbine flow section is determined by calculation for the specific turbine type at a given, maximum permissible value of steam humidity at its last stage and minimum permissible steam pressure part downstream of the turbine flow section, determining the steam pressure downstream of the turbine flow section at the steam humidity given maximum permissible value at the last stage, setting the small increment to the calculated steam pressure at the turbine flow part input, i.e. finding the steam pressure derivative downstream of the turbine flow part from the steam pressure upstream of the turbine flow part at the steam humidity given maximum permissible value at its last stage, thereby obtaining the dependence the steam pressure downstream of the turbine flow part on the steam pressure upstream of the turbine flow part, during operation or bench tests determining the stream pressure downstream of the turbine flow section current values and the steam pressure upstream of the turbine flow section with the turned off regeneration system, finding the calculated maximum permissible steam pressure downstream of the turbine flow section at the measured current steam pressure upstream of the turbine flow section and the specified, maximum permissible value of steam humidity at the last stage as the sum of the calculated steam pressure at the flow part input at the steam humidity given maximum permissible value at the last stage and the minimum permissible steam pressure downstream of the turbine flow part and the steam pressure increments, defined as the product of the above derivative by the difference between the steam pressure measured current value upstream of the flow part and its calculated value upstream of the flow part at the maximum allowable steam pressure downstream the turbine flow part and at the steam humidity given maximum permissible value at the last stage and according to the sign of the difference between the steam pressure measured current value downstream of the turbine flow part and its calculated maximum permissible value after the turbine flow part, determining the turbine operation mode, at that, the difference negative sign indicates the undesirable turbine operation mode with respect to the given, maximum permissible value of steam moisture at its last stage, and the positive sign indicates the turbine safe operation mode.

EFFECT: disclosed is the turbo generator plant condensation turbine operating mode determining method during its operation or bench tests.

4 cl, 1 dwg