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我厂利用生产系统中的两只水加热器及辅助系统,建立了一套恒压头的热水流量标准装置(以下简称装置),多次为热水表制造厂(如上海仪表机械厂) 进行热水表累积流量的校验,取得了较好的结果。一、装置组成本装置采用开关截止阀试验法,它由恒压热水源、管路系统、标准衡器、计时器四个部分组成(见图)。 1.恒压水源恒压水源是用两级热水容器串联。第一级用UTQ型基地式气动调节器对其液位进行恒水位自动控制,通过调节水泵出口阀门,使其
I plant the production system using two water heaters and auxiliary systems, set up a set of constant pressure head of hot water flow standard device (hereinafter referred to as the device), several times for the hot water meter manufacturing plant (such as Shanghai Instrument Machinery Factory) Check the cumulative flow of hot water meter, and achieved good results. First, the device components The device uses the switch-off valve test method, which consists of constant pressure hot water, piping systems, standard weighing device, timer four parts (see photo). 1 constant pressure water source is a two-stage hot water tank in series. The first level with UTQ base type pneumatic regulator to its level automatic water level control, by adjusting the pump outlet valve, so that