[Post=100]<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l3 level1 lfo1;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4、<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">某电厂</span><span lang="EN-US"><font face="Times New Roman">1#</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">机组工作面个别推力瓦块温度较高的缺陷及处理。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">对于运行中瓦块温度高的缺陷很难处理,有的机组工作面推力瓦个别瓦块温度高达</span><span lang="EN-US"><font face="Times New Roman">110</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度,严重超过允许范围,但由于无法处理,而只好长期带病运行生产。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">某电厂</span><span lang="EN-US"><font face="Times New Roman">1#</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">机</span><span lang="EN-US"><font face="Times New Roman">50MW</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">机组</span><span lang="EN-US"><font face="Times New Roman">1998</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">年投产以来,存在工作面部分推力瓦块温度高的缺陷,经过一系列的处理,目前机组的运行状况较好。其机组推力工作瓦共有</span><span lang="EN-US"><font face="Times New Roman">10</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">块瓦块组成(现把缺陷的处理过程予以描述,处理办法不尽完善,请专家指正)。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 51.75pt; TEXT-INDENT: -30pt; tab-stops: list 51.75pt; mso-list: l2 level2 lfo3;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.1<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">机组缺陷</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21.75pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">某电厂</span><span lang="EN-US"><font face="Times New Roman">1#</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">机投产以来,其机组某段时间满负荷运行</span><font face="Times New Roman">
</font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">时推力工作面瓦上半部比下半部温度高,最高温度点为第三点曾达</span><span lang="EN-US"><font face="Times New Roman">90</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度,最低点为第七点只有</span><span lang="EN-US"><font face="Times New Roman">54</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度,彼此温差</span><span lang="EN-US"><font face="Times New Roman">36</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度,在一次甩负荷后最高温度点产生了偏移,移至下半部分第七点温度为</span><span lang="EN-US"><font face="Times New Roman">93</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度,第三点只有</span><span lang="EN-US"><font face="Times New Roman">57</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度的现象(曾摘录一些时间的运行记录,能反映推力工作瓦块各瓦块的温度情况,推力工作瓦块的布置见附表一)。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 51.75pt; TEXT-INDENT: -30pt; tab-stops: list 51.75pt; mso-list: l2 level2 lfo3;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.2<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">处理方法</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 21.75pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">通过长时间的观察分析,在</span><span lang="EN-US"><font face="Times New Roman">2000</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">年一次停机检修中对缺陷进行了针对性的处理,具体处理方法如下:</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 57pt; TEXT-INDENT: -35.25pt; tab-stops: list 57.0pt; mso-list: l0 level2 lfo4;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.21<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">推力盘的检查</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">经测量推力盘的瓢偏值符合标准,最大值为</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".01" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.01mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">;推力盘和推力瓦块的平行度符合标准,不平行度小于</span><span lang="EN-US"><font face="Times New Roman">0.01</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">;对推力盘用刀口尺检查,平面平整度良好;推力盘面有轻微刮痕,对此进行修磨。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 57pt; TEXT-INDENT: -35.25pt; tab-stops: list 57.0pt; mso-list: l0 level2 lfo4;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.22<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">轴承体的检查、调整</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><font face="Times New Roman"><chsdate wst="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899"><span lang="EN-US">4.2.2</span></chsdate><span lang="EN-US">.1</span></font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">球面及球面座的检查</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">经过对轴承体球面</span><font face="Times New Roman">
</font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、球面座的接触面检查,接触点、接触面符合标准;对球面紧力进行测量调整,在瓦枕水平中分面两侧分别垫上两块</span><span lang="EN-US"><font face="Times New Roman">20*30mm</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">的</span><span lang="EN-US"><font face="Times New Roman">1.00mm</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">的不锈钢垫片,在球面顶部放上环形¢</span><span lang="EN-US"><font face="Times New Roman">1.2mm</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">的保险丝(在选用保险丝时考虑到保险丝的压缩量不超过保险丝保险直径的</span><span lang="EN-US"><font face="Times New Roman">1/3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">),对紧瓦枕中分面螺栓至中分面不锈钢垫片全部受力,松开中分面紧固螺栓后,测得保险丝的厚度</span><span lang="EN-US"><font face="Times New Roman">0.99mm</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">,则此球面的紧力</span><span lang="EN-US"><font face="Times New Roman">0.01mm</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">考虑推力轴承工作面瓦块的高温点有随着负荷变化而上下游动现象、球面及球面座上有轻微的划痕等原因,和厂家协商、并得到厂家认可后在瓦枕两侧各加一张</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".05" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.05mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">的不锈钢垫片,变球面原来</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".01" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.01mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">紧力为</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".04" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.04mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">间隙。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 62.25pt; TEXT-INDENT: -40.5pt; tab-stops: list 62.25pt; mso-list: l5 level4 lfo5;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.2.2.2<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">分析调正球面原紧力配合为间隙配合会产生的负面影响</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">调整球面原紧力配合为间隙配合后,运行中将会增大由于推力作用,球面体在球面座内的轴向位移(调整后静态测量球面体在球面座内的串动值增大至</span><span lang="EN-US"><font face="Times New Roman">0.07mm</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">)。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.75pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">则运行中当转子向后串动时轴承球面体随动,动、静部分最小值增大,当机组由于变工况等原因转子向前串动时轴承球面体随动,动、静部分的最小值将减小,检查有关资料,原设计动、静部分轴向最小值</span><span lang="EN-US"><font face="Times New Roman">2+0.5</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">;机组安装、检修记录动、静部分轴向最小值</span><span lang="EN-US"><font face="Times New Roman">2.30</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">。根据数据分析因调整球面紧力配合为间隙配合,球面体在球面座内串量的增加对机组运行中动、静部分轴向最小值不会造成影响。另外串量增加了</span><span lang="EN-US"><font face="Times New Roman">0.07</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">对差胀,轴向位移带来一定的影响,但由于量小,经调整后认为可以不作考虑。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 55pt; TEXT-INDENT: -40.5pt; tab-stops: list 55.0pt; mso-list: l5 level3 lfo5;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.2.3<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">工作面推力瓦块摇摆度的检查。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 14.5pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">工作面推力瓦取出后平放在平板上,用百分表依次对瓦块的摇摆度进行测量,测量结果表明瓦块的摇摆值都偏小,经处理后测得各瓦块的摇摆度达到标准,具体测量及处理的情况如下表(瓦号布置见图一)</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 14.5pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">瓦号</span><span lang="EN-US"><font face="Times New Roman"><span style="mso-spacerun: yes;"> </span>1<span style="mso-spacerun: yes;"> </span>2<span style="mso-spacerun: yes;"> </span>3<span style="mso-spacerun: yes;"> </span>4<span style="mso-spacerun: yes;"> </span>5<span style="mso-spacerun: yes;"> </span>6<span style="mso-spacerun: yes;"> </span>7<span style="mso-spacerun: yes;"> </span>8<span style="mso-spacerun: yes;"> </span>9<span style="mso-spacerun: yes;"> </span>10</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">修前</span><span lang="EN-US"><font face="Times New Roman"><span style="mso-spacerun: yes;"> </span>0.40<span style="mso-spacerun: yes;"> </span>0.36<span style="mso-spacerun: yes;"> </span>0.34<span style="mso-spacerun: yes;"> </span>0.35<span style="mso-spacerun: yes;"> </span>0.39<span style="mso-spacerun: yes;"> </span>0.39<span style="mso-spacerun: yes;"> </span>0.38<span style="mso-spacerun: yes;"> </span>0.34<span style="mso-spacerun: yes;"> </span>0.40<span style="mso-spacerun: yes;"> </span>0.38</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">修后</span><span lang="EN-US"><font face="Times New Roman"><span style="mso-spacerun: yes;"> </span>0.65<span style="mso-spacerun: yes;"> </span>0.68<span style="mso-spacerun: yes;"> </span>0.68<span style="mso-spacerun: yes;"> </span>0.66<span style="mso-spacerun: yes;"> </span>0.68<span style="mso-spacerun: yes;"> </span>0.70<span style="mso-spacerun: yes;"> </span>0.69<span style="mso-spacerun: yes;"> </span>0.70<span style="mso-spacerun: yes;"> </span>0.70<span style="mso-spacerun: yes;"> </span>0.68</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 55pt; TEXT-INDENT: -40.5pt; tab-stops: list 55.0pt; mso-list: l5 level3 lfo5;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.2.4<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">推力工作瓦块的接触、厚度的检查处理。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 66.75pt; TEXT-INDENT: -50.25pt; tab-stops: list 66.75pt; mso-list: l1 level4 lfo6;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.2.4.1<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">接触面检查</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">分别取下各瓦块,在平板上进行红丹法研刮,使接触面积达到标准≮</span><span lang="EN-US"><font face="Times New Roman">70%</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">,每平方厘米不少于</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">~</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">点,进油楔修刮至符合标准。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 66.75pt; TEXT-INDENT: -50.25pt; tab-stops: list 66.75pt; mso-list: l1 level4 lfo6;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.2.4.2<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">厚度差的处理</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 16.5pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">分别把瓦块放在平板上,用百分表测量厚度,测量数据如下:</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5;"><span lang="EN-US"><font face="Times New Roman">1<span style="mso-spacerun: yes;"> </span>2<span style="mso-spacerun: yes;"> </span>3<span style="mso-spacerun: yes;"> </span>4<span style="mso-spacerun: yes;"> </span>5<span style="mso-spacerun: yes;"> </span>6<span style="mso-spacerun: yes;"> </span>7<span style="mso-spacerun: yes;"> </span>8<span style="mso-spacerun: yes;"> </span>9<span style="mso-spacerun: yes;"> </span>10<span style="mso-spacerun: yes;"> </span></font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">厚Ⅰ</span><span lang="EN-US"><font face="Times New Roman">39.95<span style="mso-spacerun: yes;"> </span>39.985<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.975<span style="mso-spacerun: yes;"> </span>39.975<span style="mso-spacerun: yes;"> </span>39.985<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.950</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">Ⅱ</span><span lang="EN-US"><font face="Times New Roman"> 39.955<span style="mso-spacerun: yes;"> </span>39.98<span style="mso-spacerun: yes;"> </span>39.975<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.980<span style="mso-spacerun: yes;"> </span>39.975<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.950</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 5.25pt; mso-char-indent-count: .5;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">Ⅲ</span><span lang="EN-US"><font face="Times New Roman"> 39.955<span style="mso-spacerun: yes;"> </span>39.985<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.960<span style="mso-spacerun: yes;"> </span>39.970<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.980<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.955</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 5.25pt; mso-char-indent-count: .5;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">Ⅳ</span><span lang="EN-US"><font face="Times New Roman"> 39.95<span style="mso-spacerun: yes;"> </span>39.975<span style="mso-spacerun: yes;"> </span>39.975<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.965<span style="mso-spacerun: yes;"> </span>39.975<span style="mso-spacerun: yes;"> </span>39.960<span style="mso-spacerun: yes;"> </span>39.960<span style="mso-spacerun: yes;"> </span>39.950</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">厚差</span><span lang="EN-US"><font face="Times New Roman">0.05<span style="mso-spacerun: yes;"> </span>0.01<span style="mso-spacerun: yes;"> </span>0.005<span style="mso-spacerun: yes;"> </span>0.005<span style="mso-spacerun: yes;"> </span>0.01<span style="mso-spacerun: yes;"> </span>0.01<span style="mso-spacerun: yes;"> </span>0.01<span style="mso-spacerun: yes;"> </span>0.015<span style="mso-spacerun: yes;"> </span>0.10<span style="mso-spacerun: yes;"> </span>0.005</font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 26.25pt; mso-char-indent-count: 2.5;"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">(经计算单块瓦的厚差最大</span><span lang="EN-US"><font face="Times New Roman">0.01</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">符合标准)</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">根据测得数据,最大瓦厚值</span><span lang="EN-US"><font face="Times New Roman">39.985</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、最薄瓦厚值</span><span lang="EN-US"><font face="Times New Roman">39.950</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">,瓦之间最大厚差</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".035" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.035mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">超过标准要求(按要求瓦块间厚差不大于</span><span lang="EN-US"><font face="Times New Roman">0.02</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">)。根据相应情况取瓦块厚度</span><span lang="EN-US"><font face="Times New Roman">39.3965</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">为基准,厚的进行修刮,薄的不动,并且保证本瓦块的厚差在现有</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".01" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.01mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">以内。另考虑到不使推力瓦块巴氏修刮的太多(原始瓦块</span><span lang="EN-US"><font face="Times New Roman">40</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">±</span><span lang="EN-US"><font face="Times New Roman">0.01</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">,现最薄</span><span lang="EN-US"><font face="Times New Roman">39.950</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">则巴氏合金面已修刮掉</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".05" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.05mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">左右),修刮过程中采取修刮背面的铜肋筋面的方法(修刮时保证了均匀修刮,修刮后瓦块间厚差小于</span><font face="Times New Roman"><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".02" unitname="mm"><span lang="EN-US">0.02mm</span></chmetcnv><span lang="EN-US">,</span></font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">符合标准)。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 61.25pt; TEXT-INDENT: -50.25pt; tab-stops: list 61.25pt; mso-list: l1 level3 lfo6;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">4.2.5<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">支持</span><span lang="EN-US"><font face="Times New Roman">-----</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">推力联合轴承油封的检查。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 11pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">对四道油封进行检查,按上部</span><font face="Times New Roman"><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".4" unitname="mm"><span lang="EN-US">0.40mm</span></chmetcnv><span lang="EN-US">,</span></font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">下部</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".2" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.20mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">、左右</span><span lang="EN-US"><font face="Times New Roman">0.25</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">~</span><chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".3" unitname="mm"><span lang="EN-US"><font face="Times New Roman">0.3mm</font></span></chmetcnv><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">的标准进行修正。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; tab-stops: list 18.0pt; mso-list: l3 level1 lfo1;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">5、<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">通过一系列的检修处理,某电厂此机组投运后推力瓦正常,较为明显的是各瓦块之间的温差大大地减小,但由于机组的增容,推力的进一步增大,长时间运行下来,最大温差还有</span><span lang="EN-US"><font face="Times New Roman">19</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度~</span><span lang="EN-US"><font face="Times New Roman">20</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">度,随着机组长时间的运行,瓦块仍有温升的趋势,所以应该说还没有彻底解决问题。借此机会请专家、同仁对处理方法的不到之处予以指正,并能指导完善的处理办法,将不胜感谢!</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman"> </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">参考文献:</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l3 level2 lfo1;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">1)<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">《火力电厂汽轮机检修工艺》张培民;</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l3 level2 lfo1;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">2)<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">《汽轮机检修工艺》庄肖曾;</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 39pt; TEXT-INDENT: -18pt; tab-stops: list 39.0pt; mso-list: l3 level2 lfo1;"><span lang="EN-US" style="mso-fareast-font-family: 'Times New Roman';"><span style="mso-list: Ignore;"><font face="Times New Roman">3)<span style="FONT: 7pt 'Times New Roman';"> </span></font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">相关机组厂家设计标准。</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Times New Roman"> </font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28pt; mso-char-indent-count: 2.0;"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman';">本人简历:</span><span lang="EN-US" style="FONT-SIZE: 14pt;"><p></p></span></p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">严定美,江苏淮安人,技师,生产管理部副经理。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">1987</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">—</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">1999</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">年主要从事</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-font-kerning: 1.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">汽轮机本体安装和检修工作。</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">1999</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.0pt; mso-font-kerning: 1.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">—主要从事汽机本体检修工作。</span>[/Post] |