Last wheel spray control

freelancer_06 ✉

link 19.03.2009 8:56

Subject: Last wheel spray control

What is

Thermal stress monitoring

- Calculation of turbine rotors thermal stress, visualisation (allowed limits, real value, historical evolution)

- Last wheel spray control

freelancer_06 ✉

link 19.03.2009 9:00

может последнее колесо турбины охлаждается распылением воды

yossarian ✉

link 19.03.2009 10:02

"может последнее колесо турбины охлаждается распылением воды" Ни в коем случае! Имхо: борьба с попаданием водяных капель на рабочие лопатки последней ступени.

freelancer_06 ✉

link 19.03.2009 10:14

в самом первом документе про описание турбины было такое
(а фраза контекста вщята из 4-го)

1.1.1 Low Pressure Turbine Casing
The LP casing is double-flow, double shell design. The outer and inner casings are of welded design. Steam from the IP turbine and LP steam is introduced through the cross-over pipelines into the LP inlet equipped with an expansion joint and into the circular duct in the inner LP casing. The walls of the outer LP casing form a rectangular exhaust hood. The LP casing lower half is welded on to the exhaust neck. The exhaust steam is passed into the water cooled, spring supported condenser. Welded brackets are on the periphery of the outer casing by which the casing is set up on the foundation.
The exhaust space is equipped with a ___spray cooling system. ____The spray cooling is used when the quantity of steam passing through the rear part is low and the associated ventilation losses of the blades increase the temperature to about 90°C (e.g. during low load or no load operations).

freelancer_06 ✉

link 19.03.2009 10:16

побольше
контекста из 4-го документа
2.1 Turbine and Accessories Control System
Turbine Controller provides
Speed measurement, evaluation and indication
 Real turbine speed measurement
 Evaluation of defined speed levels
 Evaluation of acceleration
 Indication of real turbine speed on digital display
 Overspeed test management

Thermal stress monitoring
 Calculation of turbine rotors thermal stress, visualisation (allowed limits, real value, historical evolution)
 Last wheel spray control

yossarian ✉

link 19.03.2009 10:21

Так ведь охлаждаются распылённым кондесатом выхлопные патрубки, зона выхлопа ЦНД, а не лопатки.

freelancer_06 ✉

link 19.03.2009 10:37

vent steam condenser control
это речь про конденсатор выпара?

freelancer_06 ✉

link 19.03.2009 13:45

чех проснулся написал

Last wheel spray control –controls water sparing of the last stage blade – cooling down of last stage blade

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