DEVICE FOR REGULATION OF TOTAL AXIAL LOAD OF STEAM TURBINE (VERSIONS) AND STEAM TURBINE Russian patent published in 2015 - IPC F01D3/00 

FIELD: power industry.

SUBSTANCE: invention relates to power engineering. The device for regulation of total axial load of the steam turbine containing the stepped rotating shaft, while the first leakage channel in a flowing way connects the first step of the turbine section to the sealing unit near the step section on the rotating shaft, and the second leakage channel in a flowing way connects the second step of the turbine section the pressure in which differs from the pressure in the first step, with the zone of ledge located adjacently with the step section, meanwhile the connecting channel in a flowing way connects the first leakage channel to the second leakage channel. The named channels contain control valves so the controller can actively regulate the total axial load by regulation of axial pressure on the step section using steam from the first and second steps of the turbine section. The named controller can also prevent damage of actively retractable seal by means of control valves. The steam turbine containing the device according to the invention is also offered.

EFFECT: turbine control improvement.

20 cl, 3 dwg