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一、概况众所周知,水是有限的不可代替的宝贵资源,是人类生存的基本条件,是城市各项事业发展的主要制约因素。而北京是一个水资源严重匮乏的城市,据统计北京的人均占有水量仅为全国的1/6,为全世界的1/25。为缓解用水紧张的矛盾,在开源的同时必须注重节流,应该把节水作为一项紧迫的战略性任务来抓。工业企业是用水大户,降低企业水耗是节水的关键。现在有不少工厂全天的需水量变化较大,因此管网水压波动也较大,当用水负荷低时,由于水管网不是一个完整的封闭系统,致使过剩的水容易直排至地沟,造成水资源的严重浪费。为使供水量与用水量接近平衡,87年2月,我院在深井泵
I. Overview As we all know, water is a limited and irreplaceable precious resource. It is a basic condition for the survival of mankind and a major constraint factor for the development of various cities. Beijing is a city with a severe shortage of water resources. According to statistics, the per capita water consumption in Beijing is only 1/6 of that in the whole country, which is 1/25 of the world’s total. In order to ease the tension in water use, it is necessary to focus on throttling at the same time as open source, and water conservation should be considered as an urgent strategic task. Industrial enterprises are large users of water, and reducing the water consumption of enterprises is the key to saving water. Many factories now have large changes in demand for water throughout the day. Therefore, water pressure fluctuations in the pipeline network are also large. When the water load is low, the water pipe network is not a complete closed system, and the excess water is easily discharged into the trench. Causes a serious waste of water resources. In order to balance water supply and water consumption, in February of the year 87, the