Nice Thermal insulation steam tubine rapid cooling device AI
intelligent automatic control
Product description
The quick cooling device has a manual stop valve, a pressure
switch, a flow meter, an electric regulating valve, an
electromagnetic valve, an oil-water filter, a compressed air
electric heater, a pipeline, a gas collecting box, a pressure
gauge, a safety valve, a temperature measuring element, a control
cabinet, and the like.
Product Features
The equipment adopts two high-efficiency deoiling filters, which
are separated by centrifugation, followed by stainless steel wire
mesh, and then through filters with special ultra-fine fibers as
the main body.
It is a new type of air purification device which is based on
aerosol mechanics and condensed filtration mechanism to remove dust
from compressed air. Oil mist The filtration efficiency of wet
purification is less than 99%. Gu Ke desiccated the steam turbine
when it was fast cooling. Clean air quality,characteristics of
electric heaters;Compressed air electric heaters are made up of
multiple heating tubes. Cylinder body Spiral diversion baffle and
so on.
The heater core takes the form of spiral diversion, and compressed
air enters the heater interior for heating. The heater core is
heated by rotating flow around the heater core, and each heating
part of the heater element can be effectively utilized. The heat
transfer effect of the heat pipe is effective.
The heating wire, magnesia powder and other materials of electric
heater are made of high quality materials from selected import,
which enhance the service life of heating pipe.
In order to avoid too high heat transfer temperature in operation,
lead to cable heating and affect the effect of operation, the
heater's design structure has insulation measures, and the heater's
internal temperature cannot be transmitted to the outside
completely, in order to avoid excessive heat transfer temperature
in the operation of the electric heater at the end of the
connection. So the temperature inside the silo has always been at
room temperature.
The whole has the characteristics of high mechanical strength, high
heat transfer effect, long service life, and convenient maintenance
and replacement.
Specifications
| Model | Power (KW) | Working Pressure (Mpa) | Working Temperature (℃) | Working Flow (m³/min) |
| GAO-13 | 75 | 0.8 | 350 | 15 |
| GAO-20 | 150 | 0.8 | 350 | 20 |
| GAO-30 | 200 | 0.8 | 350 | 30 |
| GAO-33 | 250 | 0.8 | 350 | 30 |
| GAO-50 | 250 | 0.8 | 350 | 35 |
| GAO-60 | 250 | 0.8 | 350 | 40 |
| GAO-100 | 300 | 0.8 | 350 | 60 |
Matters needing attention in cooling process of cylinder.
The absolute expansion, expansion difference, rotor eccentricity,
axial displacement and so on should be monitored in the whole
process of forced ventilation and cooling.
After putting the steam turbine into quick cooling, it is just
beginning to supply gas, adopting small temperature difference and
small flow rate as far as possible, then gradually increasing the
flow rate, strictly controlling the intake temperature and
ventilation volume of the cylinder
In principle every adjustment, stable for 30 minutes, no change or
little change, adjust again.
Air heater outlet temperature should be steadily reduced without
sudden jump phenomenon, when high, medium pressure cylinder inlet
air diversion pipe wall temperature of 100; When the first metal
temperature of the high pressure cylinder falls below 200 ℃, the
ventilation volume can be increased, the fully open electric
regulating valve and the full open high, medium pressure cylinder
inlet valve can be increased when the temperature is about 200 ℃.
When the first stage metal wall temperature of the high pressure
cylinder and the ring holding temperature of the first static blade
of the middle pressure cylinder are below 150 ℃, there is no
obvious increase, and the forced ventilation cooling is finished.
Close the high, medium pressure cylinder intake valve, and then
continue to turn the car for 30 minutes, depending on whether the
temperature pick-up or not, if not, can stop the car, start
maintenance work.
After all the operation, close the compressed air manual valve and
electric regulating valve, open the quick cooling device sewage
valve, turn off the power supply, check the equipment for abnormal
conditions,
facilitate the next normal operation.
