Learn to identify the principle of steam and condensate trap

Trap resistance gas drainage effect in steam heating system, select the appropriate trap, can make the steam heating equipment to achieve the highest efficiency. If you want to achieve the ideal effect, will be for all types steam traps work performance and characteristics of a comprehensive understanding. Need to be able to identify the steam and condensate trap, to vapor barrier drainage effect. Identification of steam and water based on three principles: the density difference, temperature difference and phase transition. And then according to the principle of three to create three types of trap: type classification for mechanical and thermal static model, thermodynamic model. Mechanical type rely on steam trap with the changing of water level in the action, including ball float, float for a closed hollow sphere; Exposure to float upwards, float for opening up the bucket; Exposure to float downward, float down with the bucket. Hot static type, depending on the liquid temperature change and action, including the bimetallic strip, original sensitive bimetallic strip; Steam pressure type, sensitive for corrugated tube or cartridge, the original internal filling the volatile liquid. Thermodynamic model depends on the change of the thermal dynamic properties of liquid and action. Including disc type, because under the same pressure, the liquid and the gas velocity is different, the different dynamic, static pressure and driving disc valve action; Impulse type, due to the different temperature of the condensate by polar string orifice plate, sitting between the throttling orifice plate between the different pressure of form, the driven disc movement.