无负压供水设备是一种加压供水机组直接与市政供水管网联接、在市政管网剩余压力基础上串联叠压供水而确保市政管网压力不小于设定保护压力的二次加压供水设备。为了保证无负压供水设备的正常运行,它一般都会采取以下几种保护措施。
1、当停电的时候,设备(bei)自动(dong)停止运(yun)行(xing),恢复(fu)供电的时候,设备(bei)自动(dong)开(kai)始运(yun)行(xing),变频(pin)调(diao)速泵组启动(dong),恢复(fu)正常的供水(shui)。
2、当(dang)(dang)供(gong)水(shui)(shui)(shui)管网停(ting)(ting)水(shui)(shui)(shui)的(de)时(shi)(shi)候(hou),流量控(kong)制(zhi)器的(de)电(dian)动阀门关(guan)闭,为(wei)了保(bao)证用(yong)(yong)(yong)户(hu)正(zheng)常(chang)用(yong)(yong)(yong)水(shui)(shui)(shui),增压装置启(qi)(qi)动,将(jiang)水(shui)(shui)(shui)箱中的(de)水(shui)(shui)(shui)加(jia)压到(dao)供(gong)水(shui)(shui)(shui)管网的(de)供(gong)水(shui)(shui)(shui)压力(li)值,再通过变(bian)(bian)频调速(su)泵(beng)组(zu)叠压增压供(gong)给用(yong)(yong)(yong)户(hu),当(dang)(dang)水(shui)(shui)(shui)箱内的(de)水(shui)(shui)(shui)位达到(dao)低水(shui)(shui)(shui)位的(de)时(shi)(shi)候(hou),设备(bei)停(ting)(ting)止运行(xing),供(gong)水(shui)(shui)(shui)恢(hui)复后,变(bian)(bian)频调速(su)泵(beng)自动启(qi)(qi)动恢(hui)复正(zheng)常(chang)供(gong)水(shui)(shui)(shui)。
3、当(dang)变频调速泵发生故(gu)障(zhang)的时(shi)候,可以自动切换到下(xia)一台泵运行并发出声光(guang)报(bao)警(jing)。当(dang)变频器发生故(gu)障(zhang)的时(shi)候,可以工频自动启停。
关键词:无负压供水设备