easy operation steam tubine rapid cooling device long life custom
voltage
Product description
In order to speed up the cooling speed after the aeration-cooling,
shorten the cooling time after downtime, the decorative use of hot
air way, stage, the high temperature of turbine downtime after 300
℃ or so clean hot air drying, and maintain a certain temperature
difference and cylinder wall, by the high temperature phase of
small flow rate gradually transferred to low temperature stage of
large hot air flow, to achieve rapid cooling.
Product Features
- AI "intelligent" automatic control.
- Real-time cylinder temperature tracking automatic heating, cooling
function.
- Ultra-high, low temperature alarm.
- Prevent cold air from entering the cylinder safety protection
function.
- Simple operation, easy to meet.
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.
