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设有多台挤压机的车间,采用高压水泵站集中供给高压水是可取的。做高压水泵站技术设计,首先要确定两个基本参数:高压水泵站总供水能力Q站(升/秒);高压水罐工作容积V站(升)。 通常取Q_站=1.10～1.15Q_供=1.10～1.15Q_用(升/秒),其中1.10～1.15是考虑管路,阀门漏水等实际因素所加的系数,Q_供(升/秒)为站泵应提供的供水能力,Q_用(升/秒)为各台挤压机每秒平均用水量q的总和。选取Q_供=Q_用是最理想的(泵站实际安装能力均略大于Q_用)。不过此时必须用高压水罐来保证它的正常供水。因为挤压机的用水情况是很不均匀的。当Q_供大于每秒总用水量时,就把多余的高压水暂时贮藏在高压水罐内;当Q_供小于每秒总用水量时,则由高压水泵和高压水罐联合向各挤压机供水。因此,高压水罐就相当于电动机拖动系统中所带的飞轮,起着功率调节作用。
With multiple presses workshop, the use of high-pressure pump station to supply high-pressure water is desirable. To do technical design of high-pressure water pump station, we must first determine two basic parameters: high-pressure pump station total water supply capacity of Q station (L / s); high-pressure tank working volume V station (L). Usually take Q_ station = 1.10 ~ 1.15Q_ for = 1.10 ~ 1.15Q_ use (liters / second), of which 1.10 ~ 1.15 is to consider the pipeline, valve leakage and other factors added by the actual factor, Q_ for Sec) for the station pump should provide water supply capacity, Q_ (liters / sec) for each extruder the average amount of water per second q. Select Q_ for = Q_ is the most ideal (the actual installation of the pump capacity are slightly larger than Q_). However, this time must be used to ensure that its high-pressure water tank normal water supply. Because the extruder water usage is very uneven. When Q_ is greater than the total amount of water per second, the excess high pressure water temporarily stored in the high pressure water tank; when Q_ for less than the total water consumption per second, by the high pressure water pump and high pressure water tank joint squeeze Press water supply. Therefore, the high pressure water tank is equivalent to the flywheel in the motor drive system, which plays the role of power regulation.