Rotary Cultivator For Low Sized Gearbox Rotary Tiller Cultivator,New Rotary Tiller,Agriculture Rotary Cultivator,Rotary Cultivator Tiller Shandong Dahua Machinery Co.,Ltd , https://www.agrodahua.com
When the temperature is slow, the heating rate is slow, and when the temperature is heated, the temperature is slowly increased, and the oil heater can be given sufficient time to drain the air remaining in the pipeline.
At the second stop, the temperature should be stopped in the temperature range of 120 degrees to 150 degrees and 210 degrees to 230 degrees. Maintaining this temperature for a period of time can make the water in the oil become water vapor.
After the organic hot body furnace is heated, the temperature rise temperature is controlled to 100 C/H until it is close to 100 degrees. Because the viscosity of the oil in the cold furnace is large, the flow velocity in the heating surface tube is low, the oil film on the pipe wall is thick, and the heat transfer condition is poor. If the heating rate is too high, the local oil film temperature is too high.
The range of 125 degrees to 150 degrees is to drive away the residual water in the system and the stage of the trace water contained in the heat carrier. The heating rate is controlled in the range of 0 to 50 C/H, depending on the dehydration condition. When the high-level tank venting tube has a large amount of steam exhausted, there is water hammer at the bottom, the pipeline vibration is intensified, and when the pressure gauge pointer swings in a large range, the temperature must be stopped and the temperature is kept constant. The circulating oil pump can be turned off for 30 seconds. And then reboot.
Oil heaters, electric heating and heat transfer oil furnaces, the temperature rise of the organic heat carrier furnace must follow the principle of “one slow and two stopsâ€.