【密闭式膨胀水箱原理简介】

　　PZG型系列密闭式膨胀水箱的工作原理是利用密闭式膨胀水箱内的可压缩气体贮存、调节热水系统，因受温度变化而收缩或膨胀的水容量，密闭式膨胀水箱内安装了隔膜，将罐内分为气室和水室，当水温提高时水容量增加，此时罐内气体被压缩，膨胀的水进入水室，水温下降时水容量减少，气体膨胀，水室的水进入系统管网，如管网有泄漏，使管网压力值达不到设定管网压力时，由水泵进行补充至设定压力，达到了稳压定压的目的。

　　【密闭式膨胀水箱适用范围】

　　1、高温水连续供热系统;

　　2、热水站工业、民用连续供暖系统;

　　3、热水高温水循环作业系统;

　　4、风机盘管冷热水系统。

【密闭式膨胀水箱技术参数】序号型 号设计压力MPa总容积m3调节容积m3进出水口径mm设备高度mm罐体直径mm基础直径mm膨胀罐重量（Kg）1PZG – 400NL1.0-1.60.1250.0384012004003501502PZG– 600NL1.0-1.60.40.15401800600450250.13PZG– 800NL1.0-1.60.900.30502250800550325.74PZG– 1000NL1.0-1.61.370.456523501000700430.45PZG– 1200NL1.0-1.62.300.6980270012009008156PZG– 1400NL1.0-1.63.401.028032001400110011507PZG– 1600NL1.0-1.65.0341.578035001600125013678PZG– 1800NL1.0-1.67.062.1210035001800125018639PZG–2000NL1.0-1.69.422.851003800200016001318注：密闭式膨胀水箱工作压力比按0.7计算　　　　　　　　　　 水的膨胀系数终温t℃初温t℃5101520253035300.00340.00320.00260.00170.0050350.00480.00460.00400.00310.00190.0005400.00660.00630.00570.00490.00370.00230.0006450.00840.00820.00750.00670.00550.00410.0025500.01040.01300.00990.00920.00820.00700.0055550.01260.01260.01210.01140.01040.00910.0078600.01500.01490.01450.01380.01280.01160.0102650.01760.01750.01710.01640.01540.01420.0127700.02030.02020.01980.01910.01810.01690.0154750.02320.02300.02260.02190.02090.01970.0183800.02620.02620.02570.02500.02400.02280.0214850.02930.02930.02890.02820.02720.02600.0246900.03630.03620.03580.03510.03410.03290.0314