US 12,281,585 B2
Drain removal monitoring equipment
Ryo Takata, Tokyo (JP); Masaki Osako, Tokyo (JP); Masahiro Ishikawa, Tokyo (JP); Hideaki Sato, Yokohama (JP); Soichiro Tabata, Yokohama (JP); and Naoto Tochitani, Yokohama (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/921,157
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed May 13, 2021, PCT No. PCT/JP2021/018215
§ 371(c)(1), (2) Date Oct. 25, 2022,
PCT Pub. No. WO2021/235314, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 2020-087905 (JP), filed on May 20, 2020.
Prior Publication US 2023/0243273 A1, Aug. 3, 2023
Int. Cl. F01D 21/00 (2006.01)
CPC F01D 21/003 (2013.01) 9 Claims
OG exemplary drawing
 
1. A drain removal monitoring equipment for monitoring, in a steam turbine, drain removal performed by drawing a fluid outside at least one hollow stator vane including an internal space into the internal space via a slit formed in a surface of the stator vane, comprising:
a gas-liquid separation device for separating the fluid drawn into the internal space into a liquid phase and a gas phase;
a liquid-phase flow measurement device for measuring a flow rate of the liquid phase separated by the gas-liquid separation device;
a gas-phase flow measurement device for measuring a flow rate of the gas phase separated by the gas-liquid separation device;
a liquid-phase return line connecting the liquid-phase flow measurement device and a condenser of the steam turbine;
a gas-phase return line connecting the gas-phase flow measurement device and a steam supply line which supplies steam to the steam turbine,
wherein the liquid-phase flow measurement device includes a tank part for storing the liquid phase, and
wherein the drain removal monitoring equipment comprises a first communication line through which the tank part and the gas-phase return line communicate with each other.