The fundamental function of the steam trap is to discharge the condensate, air and carbon dioxide gas in the steam system as soon as possible; At the same time, it can automatically avoid steam leakage to a great extent. There are many kinds of traps, each with different performance. The steam trap with appropriate type selection and device only needs steam to pass through, so there will be no freezing problem.

但是假如蒸汽断了，蒸汽凝结水就会在热交流器或伴管里构成真空。这就会在发作冰冻之前阻止凝结水从系统中自在排放进来。所以，要在被排放设备和疏水阀之间装置一个真空毁坏器。假如从疏水阀到回水管不是运用重力排放。

However, if the steam is cut off, the steam condensate will form a vacuum in the heat exchanger or companion pipe. This will prevent condensate from draining freely from the system before freezing occurs. Therefore, a vacuum breaker should be installed between the discharged equipment and the drain valve. If gravity is not used to discharge from the drain valve to the return pipe.

疏水阀和排放管线就应该用人工排放或者运用带防冻措施的排放管自动排放。还有，当多个疏水阀一同装置在疏水阀站的时分，给疏水阀保温能够避免冰冻。疏水阀防冻措施有疏水阀不要选择尺寸过大。

The drain valve and discharge pipeline should be discharged manually or automatically by using the discharge pipe with anti freezing measures. In addition, when multiple traps are installed in the trap station together, keeping the trap warm can avoid freezing. Antifreeze measures for drain valves. Do not select too large a drain valve.

坚持疏水阀排放管线尽可能短。向下倾斜疏水阀排放管线，让重力排放的速度加速。疏水阀排放管线和凝结水回水管线加保温。当凝结水回水管线暴露在大气条件下时，应思索加伴热管。假如回水管升高，垂直排放管要与回水集管上部的排放管相邻，并把排放管和疏水阀排放管一同保温。

Keep the drain line of the drain valve as short as possible. Tilt down the drain line of the drain valve to accelerate the gravity discharge. The drain pipeline of steam trap and condensate return pipeline shall be insulated. When the condensate return pipeline is exposed to atmospheric conditions, heat tracing pipe shall be considered. If the return pipe rises, the vertical discharge pipe shall be adjacent to the discharge pipe at the upper part of the return header, and the discharge pipe and the drain valve discharge pipe shall be insulated together.

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