汽机付值值班试题

<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US"><font face="Times New Roman">15</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">．</span><font face="Times New Roman">
                </font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">主蒸汽温度急剧下降如何处理？</span><span lang="EN-US"><font face="Times New Roman">
                        </font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp; </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">答：</span><span lang="EN-US"><font face="Times New Roman">1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）联系锅炉要求提高主汽温度</span><span lang="EN-US"><font face="Times New Roman"> 2</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）汇报集控长</span><span lang="EN-US"><font face="Times New Roman"> 3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）关小调门，适当开启汽缸疏水门</span><span lang="EN-US"><font face="Times New Roman"> 4</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）如果</span><span lang="EN-US"><font face="Times New Roman">10</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">分钟内下降</span><span lang="EN-US"><font face="Times New Roman">50</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">度，立即停机</span><span lang="EN-US"><font face="Times New Roman"> 5</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）如果发生水冲击，按破坏真空停机</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US"><p><font face="Times New Roman">&nbsp;</font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US"><font face="Times New Roman">16</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">．</span><font face="Times New Roman">
                </font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">主蒸汽温度过高有什么危害？</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp; </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">答：</span><span lang="EN-US"><font face="Times New Roman">1</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）调节级焓降增加，可能造成调节级动叶片过负荷</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）主蒸汽高温部件工作温度超过允许的工作温度，造成主汽门、汽缸、高压轴封等紧固件的松弛，导致不见的损坏或者使用寿命缩短</span><span lang="EN-US"><font face="Times New Roman"> 3</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">）各受热部件的热膨胀、热变形增大</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US"><font face="Times New Roman">17</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">．</span><font face="Times New Roman">
                </font><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">如何进行汽轮机超速试验？</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; TEXT-INDENT: -42pt; mso-char-indent-count: -4.0;"><span lang="EN-US"><span style="mso-spacerun: yes;"><font face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp; </font></span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">答：校验时应用两种不同的转速表，超速校验一般应在机组启动时并手动脱扣良好，高压缸温度在</span><span lang="EN-US"><font face="Times New Roman">200</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">度以上时进行，在其它特殊情况下进行超速校验应制定特殊措施，并经总工程师批准后才可进行。按下试验油门销钉，将试验油门手轮转至转速低的危急保安器，用辅助同步器手轮向增荷方向使盘车速度均匀上升，当“遮断”字样出现时，该转速就是试验油门所指的低转速危急保安器动作转速，这时可继续升速至另一只危急保安器动作使主汽门关闭时为止（如果超过</span><span lang="EN-US"><font face="Times New Roman">3360</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">转</span><span lang="EN-US"><font face="Times New Roman">/</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">分不动作，应立即手动脱扣停止校验）。超速脱扣后拍脱脱扣器，启动调速油泵，将辅同步器及试验油门恢复到启动正常位置，当车速下降到</span><span lang="EN-US"><font face="Times New Roman">3000</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">转</span><span lang="EN-US"><font face="Times New Roman">/</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">分时，复制脱扣器用启动伐车速</span><span lang="EN-US"><font face="Times New Roman">3000</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">转</span><span lang="EN-US"><font face="Times New Roman">/</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">速，停用调速油泵，记录脱扣转速是否在</span><span lang="EN-US"><font face="Times New Roman">3300</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">转</span><span lang="EN-US"><font face="Times New Roman">/</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">分</span><span lang="EN-US"><font face="Times New Roman">—3600</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">转</span><span lang="EN-US"><font face="Times New Roman">/</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: &quot;Times New Roman&quot;; mso-hansi-font-family: &quot;Times New Roman&quot;;">分范围内</span></p>

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