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进口文丘里蒸汽疏水阀-美国阿卡迪亚品牌

进口文丘里蒸汽疏水阀characteristic:

The sealing gasket is installed in the groove at the lower end of the retaining column on the step hole nozzle, the step hole nozzle is threaded with the inner hole of the fixed plate flange, the lower end of the fixed plate flange is welded with the tubular shell, and the other end of the tubular shell is welded with the connecting flange. The inner diameter of one end of the stepped hole nozzle is successively provided with a taper hole, a connecting hole and a small hole, and the inner diameter of the other end is successively provided with a large hole and a middle hole, which are connected with the small hole. The outer diameter of one end of the step hole type nozzle is successively provided with a hexagon head and a retaining column, and the outer diameter of the other end is provided with a thread. The design of the inner cavity of the step hole type nozzle can prevent steam from spraying out of the inner cavity of the step hole, so as to meet the steam blocking and drainage function. There is no valve opening and closing mechanism to prevent steam locking. In order to meet the working conditions of different flow rates, a bench hole is set in the middle of the fixed plate flange, and a stop hole is set at the lower end of the bench hole. In the stop hole, step hole nozzles with different diameters can be installed.

进口文丘里蒸汽疏水阀characteristic:

All steam traps have air blockage, that is, the air is non condensable gas and cannot be dissolved in condensate. When the air enters the steam trap cavity and occupies the cavity space, the condensate cannot enter and the water conveyance function of the trap fails. Steam lock: when superheated steam enters the trap chamber, the process of condensation in water is relatively slow, resulting in slow water delivery of the trap. Because of these problems, the corrosion of equipment and pipeline inner wall is accelerated, the operation efficiency of equipment is reduced, and the condensate of steam using equipment or steam pipeline is detained, affecting the heat exchange rate of heating equipment.

进口文丘里蒸汽疏水阀Principle:

In the early stage of operation, non condensable gas and condensed water pass through the cavity of the step hole nozzle. The venturi steam trap of the inner cavity step hole nozzle has no opening and closing components. Non condensable gas and condensed water are sprayed into the rear pipe at a high speed through the cavity of the step hole nozzle. Therefore, this type of drain valve does not need a separate exhaust device. When steam and hot condensate enter the cavity of the step hole nozzle, non condensable gas and condensed water enter the pipe, followed by high-temperature condensate and steam enter the cavity of the step hole nozzle. Because in the two-phase flow system of steam and hot condensate, there will be different slip ratios between two-phase mixtures due to different physical properties (such as density), so that high-density hot condensate will squeeze low-density steam when passing through each step hole, The steam forms vortex at the step and stays at the entrance of the step hole. At this time, the high-temperature condensate shrinks and passes through the small hole of the bench hole nozzle and carries a small amount of steam. After passing through the small hole, the high-temperature condensate accelerates to enter the pipe through the gradually expanding step hole and rapidly expands to form turbulence effect, Its function is to clean the cavity of the stepped orifice nozzle of the trap valve and increase the resistance of steam flowing through the cavity of the stepped orifice nozzle, so as to form a back pressure resistance at the end of the orifice of the cavity table, which acts as a "steam trap" (that is, to drain condensate and prevent the discharge and leakage of primary steam, which is the working function of the steam trap).

（仅供参考）