380v steam turbine rapid cooling equipment High mechanical strength

Product description

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

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 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.

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.

Specifications

Step of equipment commissioning

• fully open, medium-pressure cylinder cooling system, air valve,
• fully open quick cooling outlet valves, sewer valves and heater venting valves.
• Power supply to the control cabinet.
• Open compressed air master pipe manual valve, open pneumatic valve.
• Open the electric regulating door and blow the discharge. (initial valve opening is 50%)
• turn on the electric heater for heating. (observe whether the ammeter display is normal, if not, please open the screen background system initial settings table, set the relevant parameters) see the settings instructions for details;
• set heater outlet temperature (200 ℃-350 ℃).
• heating.
• at the end of the heater, high, medium pressure cylinder intake cooling.
• set cylinder temperature and heater outlet temperature difference rate. (the temperature difference rate is 50 ℃, can also be set according to the requirements of the operator, but not exceed the requirements of the operating regulations.)
• the setting ratio of cylinder temperature drop rate is as follows;
• The temperature drop rate should be less than 5 ℃ / h and the temperature difference between hot air and metal should be less than 50 ℃.
• When the first stage metal temperature of the high pressure cylinder is 200 ~ 300 ℃, the temperature drop rate should be less than 6 ~ 8 ℃/ h, and the temperature difference between hot air and metal should be less than 80 ℃.
• The temperature drop rate should be less than 8 10 ℃ / h, and the temperature difference between hot air and metal should be less than 100 ℃.
• start automatic mode for cylinder real-time tracking cooling.
• close the quick-cooling sewerage valve and main drain valve.