lynx91 发表于 2006-12-19 11:25:09

请教：用阀控系统还是用泵控系统进行恒压保持更好

<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><FONT size=3><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一个恒压实验系统，仓体内容积：</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">0.392m</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">3，介质：淡水，水温</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">15—35C</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">o。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-font-kerning: 0pt"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT face="Times New Roman"><FONT size=3><SPAN lang=EN-US style="COLOR: black">&nbsp;</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体"><o:p></o:p></SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT size=3><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">加压和卸载工艺：</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">A<SPAN style="mso-spacerun: yes">&nbsp;&nbsp; </SPAN></FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">加压过程，低压进水</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">o.25Mpa,<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>60s,<SPAN style="mso-spacerun: yes">&nbsp; </SPAN></FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">压力转换，高压加压</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">15s</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以内，加压终止压力</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">5Mpa.</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT size=3><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B<SPAN style="mso-spacerun: yes">&nbsp;&nbsp; </SPAN></FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">卸载过程，</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman"> 60s</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以内。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT face="Times New Roman"><FONT size=3><SPAN lang=EN-US style="COLOR: black">&nbsp;</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体"><o:p></o:p></SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT size=3><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">请教：</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT size=3><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">用阀控系统还是用泵控系统进行恒压保持更好，压力精度</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">0.01Mpa, </FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">压力维持时间</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">24</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">小时。用泵控系统时，选什么样的斜盘泵较好，注意，系统是水系统。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT face="Times New Roman"><FONT size=3><SPAN lang=EN-US style="COLOR: black"><SPAN style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体"><o:p></o:p></SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%"><FONT size=3><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">泵组的组成：安装底座，低压泵，中高压柱塞泵，换向压力继电器，全套阀组，低压控制柜，立式操作台，不锈钢水箱（</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">1.5m</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">3）</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">, </FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">温度传感器，</SPAN><SPAN lang=EN-US style="COLOR: black"><FONT face="Times New Roman">5Mpa</FONT></SPAN><SPAN style="COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">压力传感器。</SPAN></FONT><SPAN lang=EN-US style="FONT-SIZE: 12pt"><o:p></o:p></SPAN></P>
<P>&nbsp;</P>

zhangminshhc 发表于 2006-12-19 19:23:01

Re: 请教：用阀控系统还是用泵控系统进行恒压保持更好

应该是阀控好一点，精度高，泵控达不到这个压力精度

zyagc 发表于 2006-12-20 13:42:50

Re: 用阀控系统还是用泵控系统进行恒压保持更好？---[请教]

这么高的压力控制精度，最好采用闭环控制的形式，可以采用柱塞泵，只不过是反应不如阀控的快，用压力传感器检测反馈进行控制，请问楼主，水泵选择谁家的产品，

HTFWJ 发表于 2006-12-28 23:27:29

Re: 请教：用阀控系统还是用泵控系统进行恒压保持更好

同意

gw2006 发表于 2006-12-29 21:10:52

Re: 请教：用阀控系统还是用泵控系统进行恒压保持更好

伺服电机带动丝杠推动活塞对容器进行压力保持，一些土流变试验机都是这么做的。

stone0508 发表于 2007-11-21 22:40:02

如果是保压,建议采用气动增压泵,楼主 请联系我 qq:342237564
谢谢

hbjzzxjml 发表于 2007-11-21 22:55:41

什么样的设备呀?压力等级要求这么高，0.001MPa！

贝贝 发表于 2007-11-22 19:56:22

从时间要求说两种都可以的，应该采用闭环控制，用阀控的时候泵出口的流量脉动影响要小一些

liuhaihua 发表于 2007-12-7 20:38:30

结交液压朋友.

我是从事液压油路板设计的.现在一家台资厂搞设计.我想交一些和我工作差不多的天下朋友,有意者请加我QQ.33110880.
我们一起谈谈液压,

djdlw 发表于 2008-1-4 10:10:20

是液压系统吗？用液压原理不合适。
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