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为了防止由于沼气池压力过高冲掉U型压力表内的水柱,人们往往在压力表上装一个小葫芦。这样,虽然可以限制沼气压力,但多余沼气排入室内(灶前或灯前压力表均安在室内),于安全不利。为了排除管道内的积水,要在输气管道最低处安装集水瓶,使管道内的集水排入集水瓶。这个方法,在隔一阶段时间以后,为了倒掉集水瓶中的水,需挖地取瓶。甚为麻烦。压力表和集水瓶现行安装方法如图1所示。
In order to prevent excessive pressure from digesters flushing the water column inside the U-type pressure gauge, people often install a small gourd on the pressure gauge. In this way, although biogas pressure can be limited, excess biogas is discharged into the room (the pressure gauges in front of the stove or the lamp are all in the room), which is unfavorable for safety. In order to exclude the accumulation of water within the pipeline, it is necessary to install a water collection bottle at the lowest point of the gas pipeline so as to drain the water collected in the pipeline into the water collection bottle. This method, after a certain period of time, in order to drain the water in the water bottle, digging bottle. Very troublesome. Pressure gauges and water bottles in the current installation method shown in Figure 1.