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GYL series steam converting valve is mainly applied to condensate system
and drainage system services.Aim to various services and the damage
cause,based on throttle pressure reduction principle,making using of
computer simulation design,to increase performance of cavitation-resistant
and flushing resistance perfectly by nice constructure. |
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Technology introduction
■Balance plug,most reduced the moment of actuator,saving energy;
■Flow characteristic’s curve is smoothing,have type for linear and
correction equal percentage;
■Little resistance,and high flow;
■multistage throttle,contructure for cavitation erosion and flash
vaporization resistant;
■Strict close performance,zero inner leakage;
■throughway type,angle body,welding or flanged connections;
■Lower easy-to-damage parts,convenient maintainance;
■wedged type trim,accord with constructure of international newest
control valve.
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Product specify
By one or more stage expansion method to reduce the steam pressure to
the expectation value, simultaneously, in order to realize reduces the
temperature value goal which vapor temperature arrives needs, control
entrance cooling water. This equipment widely applies to the industry
and each kind of type power plant as well as the large-scale power plant
steam turbine and the high-pressured substation. The GYL series control
valve mainly aims at the condensing water to be systematic, operating
mode request, when the medium has the certain pressure variation that
will cause flash vaporization phenomenon, thus has the serious
destruction to the valve port, affects the overall system the normal
operation. We request and have the destruction cause in view of the
different operating mode, according to the principle to reduce expense
and pressure, using the computer simulation design,improve the
performance which the valve anti-steam eclipses, bears washes our basis
from the structure. Covers reduces expenses for the first level to fall
pressure, when promotes the valve stem, the lower valve stem extremity
reduces expenses for the second level to fall pressure (according to
need to be possible to design to three levels reduces expenses to fall
pressure). The valve port establishes between in first level and the
second level reducing expense to fall pressure, moreover is far away the
throttle. This kind of structure establishment first through the
multistage throttle, fell the pressure to suppress the cavitation
phenomenon occurrencing; Next, if has slightly changes (cavitation) to
occur, also the military and political leader variation area directed in
valve plug covering, also was far away the valve port, has avoided the
cavitation to the valve port destruction. The valve body uses the ultra
width the streamline design, has in a big way may move compared to, in
the travelling schedule very hour, passes flows the area slightly, the
resistance is big (but has anti- cavitation performance); After the
travelling schedule increases, the circulation area increases, the
resistance is small, can satisfy the great current capacity the request.
At the same time, the valve core uses the balance -like configuration,
the driving influence very slightly, opens, closes rapidly is reliable.
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