<p class="MsoPlainText" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><span style="FONT-SIZE: 16pt; FONT-FAMILY: 黑体; mso-bidi-font-size: 10.5pt;">中压油动机振动老大难问题终于解决了<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">[Post=2]</span></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">李宝玉①<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>黄燕北①<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>孙玉华②<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>华维国②<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>吕福生②<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>牛厉②<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">①<span lang="EN-US">.</span>哈尔滨汽轮机厂研究所<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>哈尔滨<span lang="EN-US">150046<p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">②<span lang="EN-US">.</span>天津陈塘热电厂<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>天<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>津<span lang="EN-US"> 300221<p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span lang="EN-US" style="FONT-FAMILY: 黑体;">[</span><span style="FONT-FAMILY: 黑体;">摘要<span lang="EN-US">]</span></span><span style="FONT-FAMILY: 文鼎CS楷体;"><font face="宋体">多年来的老大难问题——中压油动机振动，先后请了很多人来解决此问题，虽有好转还是振动，只不过将振动点向上移动缩小振动区间而已，并没有得到彻底解决。此次中压油动机振动得到彻底解决，电厂很满意。<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">关键词：</span><span style="FONT-FAMILY: 文鼎CS楷体;"><font face="宋体">振动<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>放气孔<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>漏油<span lang="EN-US"><span style="mso-spacerun: yes;"> </span></span>稳定性<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">前言：<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">陈塘热电<span lang="EN-US">1#</span>机系属哈汽厂<span lang="EN-US">CC50-90/13/1.2 50MW</span>双轴机组，从<span lang="EN-US">92</span>年投产以来运行一直很稳定，至<span lang="EN-US">98</span>年<span lang="EN-US">99</span>年以来，中压油动机就产生振动，连带中压凸轮及操纵座一起上下振动，声音很大，<span lang="EN-US">4.5</span>米平台的中压油动机压力油管、脉动油管振动情况不断加剧、特别在中压油动机压力油管弯头处水平方向有<span lang="EN-US">5</span>～<span lang="EN-US">8mm</span>左右振动幅度，最大可达<span lang="EN-US">10mm</span>左右。因此在法兰处因振动而松动冲坏法兰垫造成漏油。同时中压油动机活塞下压力表指针摆动过大（从<span lang="EN-US">0.5</span>～<span lang="EN-US">1.5MPa</span>范围波动）。多次把压力表打坏，严重威胁机组安全运行。为此电厂领导很重视，一方面积极请人解决；一方面制定<span lang="EN-US">1#</span>机中压油动机振动运行防事故措施；<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">……<span lang="EN-US">1#</span>机司机、付司机每小时检查一次中压油动机压力油管、脉动油管（尤其是法兰处）是否漏油，班长、付班长每班对中压油动机巡查不少于二次。……如果发现压力油管、脉动油管发生火灾，应立即组织扑救……<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">先后多次请人解决此问题，采取好多措施，将中压油动机振动区上移至<span lang="EN-US">170</span>～<span lang="EN-US">180</span>～<span lang="EN-US">250mm</span>之间振动，<span lang="EN-US">170</span>～<span lang="EN-US">180mm</span>之下振动小，<span lang="EN-US">160mm</span>以下不振。<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">从<span lang="EN-US">2003</span>年<span lang="EN-US">3</span>月<span lang="EN-US">24</span>日～<span lang="EN-US">4</span>月<span lang="EN-US">14</span>日彻底解决了中压油动机振动老大难问题。</span></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">Ⅰ、从试验、解体部套中发现的问题：<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">1#</span>机<chsdate wst="on" year="2007" month="3" day="22" islunardate="False" isrocdate="False"></chsdate><span lang="EN-US">3</span>月<span lang="EN-US">22</span>日<chsdate></chsdate>停机中修，进行多次静态试验，一投中压调压器中压油动机就振动，特别是中压油动机从<chmetcnv wst="on" unitname="mm" sourcevalue="250" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">250mm</span><chmetcnv></chmetcnv>下降至<span lang="EN-US">200</span>～<chmetcnv wst="on" unitname="mm" sourcevalue="249" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">249mm</span><chmetcnv></chmetcnv>之间振动最大，连带中压油动机杠杆凸轮及操纵座一起振动，中压油动机的压力油管也跟着振动最大可达<span lang="EN-US">5</span>～<chmetcnv wst="on" unitname="mm" sourcevalue="10" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">10mm</span><chmetcnv></chmetcnv><span lang="EN-US">.</span>由<chmetcnv wst="on" unitname="mm" sourcevalue="250" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">250mm</span><chmetcnv></chmetcnv>下降到<chmetcnv wst="on" unitname="mm" sourcevalue="180" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">180mm</span><chmetcnv></chmetcnv>时振动有减小的趋势，由<chmetcnv wst="on" unitname="mm" sourcevalue="180" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">180mm</span><chmetcnv></chmetcnv>下降<chmetcnv wst="on" unitname="mm" sourcevalue="170" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">170mm</span><chmetcnv></chmetcnv>明显减小到不振，<chmetcnv wst="on" unitname="mm" sourcevalue="170" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">170mm</span><chmetcnv></chmetcnv>以下根本不振，同时中压油动机最大可下关至<span lang="EN-US">108</span>～<span lang="EN-US">110.</span>高压油动机在冷凝土况时最大开度为<chmetcnv wst="on" unitname="mm" sourcevalue="167" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">167mm</span><chmetcnv></chmetcnv><span lang="EN-US">.</span></font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体">通过解体调节部套发现如下问题：</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">1.</span>调节部套滑伐套筒均有不同程度的水锈、拉毛、磨损；错油门滑伐、防火滑伐等有严重的水锈蚀印，特别是超速限制滑伐水锈蚀更为严重，用手提不起来，只好用铜棒打击滑伐后才能取出来。</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">2.</span>中压油动机活塞杆与活塞拉毛磨损严重，在活塞最下边<span lang="EN-US">90</span>°角内磨损严重，与此相应的内缸壁也磨损严重，二个活塞环也拉毛磨损严重，从活塞上端起<chmetcnv wst="on" unitname="mm" sourcevalue="230" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">230mm</span><chmetcnv></chmetcnv>以上几乎直径方向大面积拉毛、冲击印磨损严重，尺寸为<span style="mso-hansi-font-family: 宋体;">Ф</span><span lang="EN-US">99.99</span>、<span style="mso-hansi-font-family: 宋体;">Ф</span><span lang="EN-US">99.71</span>、<span style="mso-hansi-font-family: 宋体;">Ф</span><span lang="EN-US">99.64</span>。没有磨损的部分为<span style="mso-hansi-font-family: 宋体;">Ф</span><span lang="EN-US">99.99</span>，与活塞杆相配的上套筒，内壁磨损也严重。</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">3.</span>调速器滑伐<span lang="EN-US">N02</span>滑伐与同步器挂钩处间隙过大达<chmetcnv wst="on" unitname="mm" sourcevalue="1.15" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">1.15mm</span><chmetcnv></chmetcnv></font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">4.</span>防火滑伐的放气孔<span style="mso-hansi-font-family: 宋体;">Ф</span><span lang="EN-US">1</span>锈蚀堵死不通畅</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">5.</span>中压调压器切除伐出口脉动油管有一个<span style="mso-hansi-font-family: 宋体;">Ф</span><chmetcnv wst="on" unitname="mm" sourcevalue="4.6" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">4.6mm</span><chmetcnv></chmetcnv>小孔（过去调试中打钻的）</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6. </span>中压油动机油缸下侧法兰垫冲坏严重漏油</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">Ⅱ、对症下药采取有效措施：<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">1. </span>对所有拉毛、磨损、锈蚀的滑伐套筒都精心的按规定处理清洗好</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">2. </span>防火滑伐<span style="mso-hansi-font-family: 宋体;">Ф</span><span lang="EN-US">1</span>放气孔重新钻好通畅</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">3. </span>同步器挂钩处前面精心点焊三点配好尺寸打磨平滑，几乎没有间隙</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">4. </span>将中压油动机油缸下侧法兰垫从新装好把牢</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">5. </span>将中压调压器脉动油管上的<span style="mso-hansi-font-family: 宋体;">Ф</span><span lang="EN-US">4.6</span>小孔堵死</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6. </span>更换如下部件：</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6.1</span>更换中压油动机滑槽（原来的磨出了沟）；</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6.2</span>更换改进的中压油动机错门旋转滑伐及套筒</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6.3</span>更换了中压油动机改进的反馈滑伐及套筒</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6.4</span>中压与低压调压器新加装了防钢带振动的阻尼器</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6.5</span>将中压油动机脉动油管与前轴承箱相连接的弯管处直径小于二边相连的细管改为大于二边的粗管</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">6.6</span>加固油管支承，不使油管悬空</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 黑体;">Ⅲ、试验调整消除振动静态曲线良好<span lang="EN-US"><p></p></span></span></p><p></p><p></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体">在试验中，先后从新调正了高、中、低压油动机反馈调整斜快、反馈滑伐的调正垫片的厚度，找出其与相匹配的最佳位置，使其达到如下情况：</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">1. </span>纯冷凝工况，高压油动机最大开到<chmetcnv wst="on" unitname="mm" sourcevalue="181" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">181mm</span><chmetcnv></chmetcnv></font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">2. </span>投调压器时，中压油动机行程最大可下关至<span lang="EN-US">40</span>～<chmetcnv wst="on" unitname="mm" sourcevalue="42" hasspace="False" negative="False" numbertype="1" tcsc="0"></chmetcnv><span lang="EN-US">42mm</span><chmetcnv></chmetcnv>左右，达到厂家要求还有余。</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">3. </span>同步器与综合滑阀（<span lang="EN-US">1</span>＃、<span lang="EN-US">2</span>＃、<span lang="EN-US">3</span>＃综合滑阀）与油动机行程关系曲线（高、中、低压油动机）；调压器行程与油动机（高、中、底压油动机行程关系曲线良好，灵敏度达到了厂家要求）。</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><font face="宋体"><span lang="EN-US">4. </span>投调压器时，中压油动机在任何行程位置都不振动，很稳定，彻底消除了中压油动机振动问题（由于消除了放气孔堵塞；中压油动机油缸下部侧法兰垫漏油不仅影响油压也容易进空气，因油压变化不稳和“空气”作怪<span lang="EN-US">;</span>并且增加了两个消除产生调压器钢带振动的阻尼器；弯管处管径加大使其流速减小和管阻降低等措施而得到彻底消除振动问题）。</font></p><p class="MsoPlainText" style="MARGIN: 0cm 0cm 0pt;"><font face="宋体"><span lang="EN-US"><span style="mso-tab-count: 1;"> </span></span>Ⅳ、机组运行稳定，自整性能大大改善和提高。机组冲转过程中一直很稳定，并网带负荷很顺利，投调压器时中压油动机一点也不振动，机组带电热负荷运行不仅稳定，而且高、中、低压油动机调整热负荷的能力范围也大大提高了。同时电热负荷的自整性也大大改善和提高了。经过三年的运行考验机组运行正常。</font></p>[/Post]
[此贴子已经被作者于2007-11-19 15:44:27编辑过] | 
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