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Technology introduction
Side manual operation device
GYL series control valve could be collocated with handwheel device,when
system is shut down or maintaining,or Air or Actuator is failure,could
handle control valve by manual operation device,our new structure manual
operation device have perfect Operability and the convenience of
disassembly.
Roof manual operation device
GYL series control valve could be collocated with handwheel device,when
system is shut down or maintaining,or Air or Actuator is failure,could
handle control valve by manual operation device,our new structure manual
operation device have perfect Operability and the convenience of
disassembly.
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BEIER multistage pressure reduction trim, have multiple discs (which
have many special designed narrow variational ports,ports is based on
pressure reduction progression’s different amount corner,compress and
outspread) superposed to be a multistage pressure reduction cage.while
fluid is flowing,have to pass by multi-times, have a progressive
pressure reduction process.By BEIER multistage pressure reduction trim
is fitted with plug,made fluid throttled and passed by most devious
variational ports,then getting one stage pressure reduction when fluid
passed by every corner,in this process wasting the kinetic energy of
fluid,reducing the flow velocity of fluid,getting multistage pressure
reduction.to fluid of gas,by muli-times convection expand,reducing the
flow velocity of fluid,reducing the intensity of noise,reducing the
erosion that fluid actioned to trim,to fluid of liquid,every pressure
reduction is no more than the saturated steam pressure.to avoid
cavitation erosion and flash vaporization,reducing the origin of noise.
The structure of BEIER multistage pressure reduction trim is based on
principle of progressive pressure reduction,according to specific spot
technics conditions.by different combination, collocated of disc,getting
different adjusting purpose.in selection of valve type please take
attention to technics conditions as bellows:the kind of
media,flow,density,operating pressure,pressure drops,operating
temperature.by technics condition to decide labyrinth type multistage
pressure reduction control valve’s Cv, progression of pressure
reduction,flow characteristic, nominal pressure etc. |
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At present, labyrinth type multistage pressure reduction technology is
the best solution to problem of controlling and operating in severe
technics condition.it’s more advanced than traditional cage type
multi-hole trim,and getting more multistage pressure reduction effect.
To use labyrinth type multistage pressure reduction control valve have
remarkable effect as bellows:
1. Dependable reach the condition of high-temperature,high-pressure
and high pressure drops,media that high velocity of flow.
2. Reach the condition of noise limitation,be effective on noise
control.
3. Improve the high vibration performance of control valve.
4. Perfect long service-life of trim and control valve.
5. Dispelling the equipment’s damage from cavitation,noise and
vibration.
6. Reducing the shut-down time of equipment,reducing maintenance,and the
cost of maintenance,increasing factory’s producing capacity.
The application of BEIER labyrinth type multistage pressure reduction
control valve as bellows(electric power industry,pertro industry,natural
gas industry etc):
• High pressure steam regulating and emptying
• Compressor’s recirculation and Anti-surge
• Host start-up of feed-water pump,host booster pump’s recirculation
• Condensate booster pump’s recirculation
• Boiler Feed Pump’s least flow recirculation
• Ethylene and low pressure,heavy oil low pressure
• Steam turbine by-pass and start regulation
• Boiler ‘s Feed-water regulation
• High-pressure cooling water injection regulation
• Expansion turbine by-pass regulation
• High pressure air current flow regulation |
