Know what type thermodynamic trap

Thermodynamic model according to the principle of phase transformation, trap by steam and condensate through a change in velocity and volume of different thermodynamic principle, the valve plate and produce different pressure difference, drive the valve switch valve. Because of thermodynamic type of motivation comes from steam trap, so the waste steam is larger. Simple structure, resistance to water hammer, the biggest back at 50%, have noise, the valve plate work frequently, short service life. Thermodynamic trap with thermodynamic type ( Disc type) , pulse type, hole plate. Thermodynamic type steam trap valve plate has a activities, is a sensitive parts and action execution. According to the steam and condensate through a change in velocity and volume of different thermodynamic principle, the valve plate and produce different pressure difference, drive the valve switch valve. Steam leakage rate was 3%, degree of super-cooling is 8 ℃ - 15℃。 Trap when the device is started, pipe cooling water, condensate push valve plates by working pressure, discharge quickly. When the condensate discharge, vapor emissions, then because of the steam is greater than the condensate volume and velocity of flow, make the valve and produces differential pressure, valve plates under the steam flow rate of suction quickly shut down. When the valve is closed, the valve under pressure to both sides, the stress of the valve plates below area is less than the stress area of the above, because of the inside of the dome trap pressure comes from steam pressure, so the force is greater than the above valve plates, below the valve tightly closed. When the inside of the dome trap steam into the condensate, the inside of the dome pressure disappear. Condensate push valve plates by working pressure, the condensate went on emissions, circulation work, intermittent drainage. Disc type steam heat preservation type steam trap trap the work principle and thermodynamic type of trap is the same, it's on the thermodynamic type steam trap of outdoor surface increase a layer of the shell. The shell chamber and steam pipes are interlinked, using steam pipeline itself to trap for thermal insulation main steam room. To keep the temperature of main steam chamber is not easy to cool, steam pressure, steam trap shut. When the condensate pipeline, trap enclosure cooling, trap began to drainage; If there is no water on the superheated steam pipe, steam trap does not open, high quality of work. For alloy steel body, valve core for carbide, the valve is the highest temperature is 550 ℃, durable, long service life, is a high pressure, high temperature of superheated steam trap. Impulse type steam trap has two orifice and pneumatic control valve switch, according to the steam pressure drop change even if the valve is fully closed entrance and exit is also through the first and second holes are interlinked, remain the state of not fully closed, the steam continuously escape, large amount of steam leakage. The steam trap operating frequency is very high, severe wear, life is short. Small volume, water resistant, can discharge the air and water saturation temperature, close to the continuous drainage, 25% maximum back pressure, therefore users are rare. Orifice plate type steam trap is according to the different displacement, choose different aperture of orifice plate displacement control purposes. Structure is simple, the choice can appear inappropriate or large drainage than running steam, not suitable for batch production or condensation of water steam equipment of large fluctuations of steam equipment.