Trap is steam, condensate water pipe system, one of the main annex, play a role in blocking water and exhaust. If the trap fails, a lot of steam to the condensate pipeline, not only the heat loss, and will have a "water hammer" to destroy the pipe network; trap trap, the condensate water flow rate or smaller, then the heat up to reach To the desired effect. Use trap, we must first pay attention to selection. Improper selection, will cause water and air leakage phenomenon. Select the trap, not only from the consideration of displacement, can not simply apply the look-up table, it should be based on the amount of hydrophobic (condensate volume) and the valve before and after the pressure difference, in accordance with the valve sample to determine the size and quantity. Trap selection, the equipment must be consumed by the amount of steam per hour by multiplying the selection rate of 2-3 times the maximum condensate, to select the trap drainage. In order to ensure that the trap drains the condensate as soon as possible while driving, the temperature of the heating device can be rapidly increased. Trap discharge energy is not enough, will result in condensate can not be discharged in time, reducing the thermal efficiency of heating equipment. Trap selection, you can not choose the nominal pressure of steam traps, because the nominal pressure can only be said that the trap body pressure level, traps nominal pressure and pressure vary widely. Therefore, according to the work pressure to choose the trap drainage. Working pressure is the working pressure before the trap minus the difference between the outlet pressure of the trap outlet. Select the trap requires accurate steam blocking drainage, high sensitivity, can improve steam utilization, no leakage of steam, reliable performance, high back pressure, long life, easy maintenance is the preferred conditions. In the production process of heat transfer equipment, drying room, rapid heat exchangers, distillation equipment need to quickly warming, does not allow the existence of condensed water production heating equipment, mechanical traps should be used. In the steam pipe, heating pipelines, heating equipment, low temperature requirements of steam equipment, should be selected thermostatically trap. In the high temperature and pressure overheating steam lines and equipment, should be selected overheated steam steam trap.
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