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压力表与存水弯管之间,装有1个三通旋塞,它是用来冲洗存水弯管、水压试验用表与工作压力表的切换,装接标准压力表与工作压力表的校验,同时也是装卸压力表必不可少的重要附件。在各种规程中对其都有相关的要求,可是在承压类特种设备运行中的三通旋塞.其操作方法和操作要领在各种教科书中以及培训教材中,一直众说不一,下面列举几种有代表性的三通旋塞操作方法。1常见的2种操作方法介绍1.1第1种操作方法(见图1)
Between the pressure gauge and the trap, equipped with a three-way cock, it is used to flush the water trap, hydraulic test table and the work of the pressure gauge switch, connect the standard pressure gauge and the working pressure gauge Calibration, but also essential for loading and unloading pressure gauge an important annex. In all kinds of rules of the relevant requirements, but in the pressure of special equipment operation of the three-way cock.Its operating methods and operating essentials in a variety of textbooks and training materials, has been mixed, the following list Several representative three-way cock operation method. A common method of operation of the two introduced 1.1 The first method of operation (see Figure 1)