Low-vibration-noise boiler tail pipe and method for restraining vibration of boiler tail pipe

The invention discloses a low-vibration-noise boiler tail pipe and a method for restraining vibration of the boiler tail pipe, and belongs to the field of boilers. The boiler tail pipe is provided with a flue, an air preheater, a bypass pipe and a control device. The bypass pipe can provide a bypass channel for the flue and the air preheater and is used for shunting air flow in the flue. And the control device can be used for controlling whether the bypass pipe is conducted or not or controlling the conduction degree. According to the boiler tail pipe, vibration is effectively controlled through the bypass pipe and the opening, closing and opening degree of the corresponding controller, and therefore, the noise generated by vibration is restrained. 一种低振动噪声锅炉尾管和抑制锅炉尾管的振动的方法，属于锅炉领域。该锅炉尾管具有烟道、空气预热器、旁通管以及控制装置。其中，旁通管能够提供烟道和空气预热器的旁路通道，用以对烟道内的气流进行分流。而控制装置则可以对旁通管是否导通或导通程度实施控制。本申请示例中的该锅炉尾管通过上述旁通管以及对应控制器启闭和开度，实现了有效地控制振动，从而也抑制了因振动所产生的噪音。