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style="BORDER-RIGHT: #b0cfee 1px solid; BORDER-TOP: #b0cfee 1px solid; FLOAT: left; BORDER-LEFT: #b0cfee 1px solid; WIDTH: 955px; BORDER-BOTTOM: #b0cfee 1px solid"> <TABLE cellSpacing=0 cellPadding=10 width=955 border=0> <TBODY> <TR> <TD align=middle colSpan=2> <H3></H3></TD></TR> <TR> <TD align=middle colSpan=2> <H2>p煤机公司技术创C节能</H2></TD></TR> <TR> <TD align=middle colSpan=2> <H3></H3></TD></TR> <TR> <TD align=right width=346><A href="http://www.ducatiukracing.com/" target=_blank>煤炭资讯|?/A></TD> <TD width=382>2007-6-16 11:51:07    <A href="http://www.ducatiukracing.com/MroeNews.aspx">?/A></TD></TR> <TR> <TD colSpan=2 class="newsContent"> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" > <HTML> <HEAD> <title>p煤机公司技术创C节能     本网?U水资源Q山东煤机集团莱芜煤机公怸断技术创斎ͼ自行设计、制造的恒压变频供水pȝQ经q紧张调试、于q日投入使用?BR>
    该系l采用PLC控制Q通过文本昄器进行供水管|压力设定,通过管|压力,利用变频器内|PIDq行自动调节Q确保管|压力保持恒定?BR>
    在此之前Q该公司采用工频50HZ供水Q由于水泵供水大于管|需求,辑ֈ0.7兆帕。采用变频调速供水以后,频率一般在43?5HZ之间波动Q供水压力在0.5兆帕Q完全满管|需求。通过现场,采用变频调速以后,每小时可节电(sh)20KWHQ节늎?0%以上Q且水塔通过加装声波液位检,解决了水塔溢问题,预计每年节约水资源费?2.7万元?
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