空排止回阀<德国奥莱斯阀门品牌>

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空排止回阀<德国奥莱斯阀门品牌>

【空排止回阀】详细说明：

空排止回阀安装在火电机组的高压给水泵出口管道上，防止给水倒流，保护给水泵。该阀配合水泵*小流量自动再循环旁路阀工作，当给水泵在低负荷或者出口阀门关闭状态时，自动再循环旁路阀应处于开启位置止回阀安装位置，以**水泵的安全运行。当空排止回阀开启时，再循环旁路阀就自动关闭。不宜用于含有固体颗粒和粘度较大的介质。

The empty check valve is installed on the outlet pipeline of the high-pressure feed water pump of the thermal power unit to prevent the backflow of the feed water and protect the feed water pump. The valve works with the minimum flow automatic recirculation bypass valve of the pump. When the feed pump is in low load or the outlet valve is closed, the automatic recirculation bypass valve should be in the open position to ensure the safe operation of the pump. When the empty check valve opens, the recirculation bypass valve closes automatically. It is not suitable for medium containing solid particles and high viscosity.

【空排止回阀】结构特点：

1、具有再循环减压设施,使高压介质经过多次小通径绕流,消耗大量的能量,从而降低压力。

2、阀门只有在流量很低时才具有再循环功能,使泵冷却，在泵正常运行时并未开启再循环，从而可节省因连续再循环消耗电能和水能。

3、阀门不需要任何外接能源止回阀安装位置，完全自动。

4、阀门应垂直安装。

1. Recycling and decompression facilities make the high-pressure medium flow through several small paths, consuming a large amount of energy, thereby reducing pressure.

2. Valves have the function of recirculation only when the flow rate is very low, so that the pump can be cooled, and the recirculation is not opened in the normal operation of the pump, thus saving energy and water consumption due to continuous recirculation.

3. The valve does not need any external energy and is completely automatic.

主体材质：

1、WCB

2、25#

3、ASTM A216 WCB

4、ASTM A105

使用温度：WCB：-29℃-425℃

适用介质：水

连接方式：法兰

传动方式：自动

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