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.
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