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检验如右图所示的气体发生装置的气密性,除常用方法外,还可用如下方法: 用止水夹将气体出口处夹紧,再从长颈漏斗口加水,如水停留在长颈漏斗中,而不流入广口瓶中,说明装置不漏气(因为广口瓶中的空气不能排出,阻碍了水的进入。可见,某些资料说装置不漏气,水也能进入瓶中是不对的)。否则漏气。此法操作简单。适用于各种类似装置的气密性检查。
To test the gas-tightness of the gas generating device shown in the right figure, in addition to the commonly used methods, the following methods can also be used: Use a water stop clamp to clamp the gas outlet, and then add water from the long-necked hopper inlet, such as water staying in the long neck funnel Medium, without flowing into the jar, indicates that the device does not leak (because the air in the jar cannot be discharged, preventing the entry of water. It can be seen that some information says that the device is not leaking, and water can enter the bottle. wrong). Otherwise leak. This method is simple to operate. Applicable to a variety of similar devices tightness inspection.