Assertion: wicket gate | /r/HasProperty | closed
Facets:
value: slowly
type: MANNER
value: preferably
type: DEGREE
value: in order to prevent damaging surge pressures
type: PURPOSE
value: nearly
type: DEGREE
value: from the point b
type: TEMPORAL
value: as rapidly as
type: MANNER
value: fast
type: MANNER
Source sentences:
text: 2D, the wicket gates are first rapidly closed, and, when the hydraulic pressure variation is increased to a certain value, they are slowly closed so as to prevent that the pressure variation is further increased.
text: and came to the great tower, but the gate and wicket was fast closed.
text: 2D, the wicket gates are first rapidly closed, and, when the hydraulic pressure variation is increased to a certain value, they are slowly closed so as to prevent that the pressure variation is further increased.
text: It is preferable that the wicket gates are closed as rapidly as possible before the pump-turbine operation in the S-section is initiated so as to reduce the abnormal hydraulic pressure variation caused during the subsequent pump-turbine operation tracing the S-section.
text: On the other hand, if the wicket gates are slowly closed from the point b, disadvantageous hydraulic pressure variation would be a little increased as compared with the case where the S-section of the curve 2 were traced.
text: Preferably, the wicket gates are closed when the tracing on the S-section in the Q 1 -reducing direction is terminated or when the trace on the same section in the Q 1 -increasing direction is initiated; i.e. when the pump-turbine escaped the operation on the S-section in the Q 1 -reducing direction.
text: Preferably, the wicket gates are closed when the latter condition is detected.
text: The wicket gates must be closed gradually in order to prevent damaging surge pressures, but fast enough to prevent a damaging rise in turbine speed.
text: Note that most of the default turbine characteristic curves (used by way of the selected "specific speed") do not have data for when the wicket gates are nearly closed.
text: Upon performing an inspection of the wicket gates in the scroll case, personnel discovered that the No. 6 wicket gate was open about 50 percent, while all the other gates were closed.