ATA21-飞机空调系统常见故障排除
<P>**** Hidden Message *****</P> <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">ATA21</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><FONT face="Times New Roman"><SPAN lang=EN-US style="mso-fareast-font-family: 'Times New Roman'"><SPAN style="mso-list: Ignore">1.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US>FCV</SPAN></FONT><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的更换:</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.1FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">是一个电控气动的阀门,控制从引气系统到空调系统的引气量。通过流量选择旋钮的高中低位提供信号到</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ZC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">计算所需流量再通过</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控制</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的开度。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.2FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">更换的维护构型:拔出手册上写明的相应</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">CB</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,并确保引气系统不引气,即可开展工作。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><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'">更换工作过程技巧和注意事项:历来更换</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">有两种方法,从空调舱下部接近</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">或从</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">前面(飞机纵轴机头为前</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FWD</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">,下同)接近,前者要拆除很多空调舱内弯管,工作量较大,并且工作者在地面站立手举起来拿工具操作易疲劳,视野相对也受到限制;后者是手册上的方法,先拆除</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">前的空气管(部分后来的飞机同位置加装了臭氧滤),然后得以在空气管正下方地面放置一小工作梯,工作者可以站在上面面向</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">操作,视野方便,工具接近较易。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">通过一个不对称的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">U</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">型架连接于空调舱天花板上,拆下旧件</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">以后肯定要将那个</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">U</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">型架串在新件</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上,这时候要特别注意</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">U</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">型架的方向,一定要先记好,以前发生过</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">U</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">型架装反导致新件装上去后</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">两头管子接不上的事例,只能重新取下装回来后再装机,浪费时间和精力。其他注意的是</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">U</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">型架吊点内都是球形螺孔并有衬套,注意不要因用力过大将衬套溅落于空调舱就难找了。为了保证气密性必须更换相应封圈。</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上的几根</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">SENSOR LINE</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">安装时有定力要求,要用手先带上螺纹再用力矩扳手定力安装。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">1.4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">测试:先引气做渗漏测试后再按手册完成操作测试。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.PACK</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">超温的处理:</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果去除控制器和传感器,空调组件就是一个完美的能量转化机构,通过</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为核心的机械部件,将引气系统高温高压的空气转化为</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">0</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">度左右的凉爽空气再经</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">HOT AIR</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">掺混进入驾驶舱和客货舱。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">2.2PACK</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">超温分为线性缓慢超温和突然的超温警告,前者多数是一些空调机械部件的性能衰减,比如主次热交换器变脏影响热交换效率;集气室有部分破裂(裂口不大,未恶化,如破口很大超温就很严重导致警告)导致漏气也会引气组件超温;如果突然的超温警告,就有机械部件的突然损伤有关,比如我们重庆处理过的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">轴断裂引起的组件超温,换下来的</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">轴用手转不动。今年</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'">月</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">30</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">日</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">6027</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">飞机</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PACK2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">空调腔室内发现破片,经详细检查是冲压空气管道破损,造成</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">COT</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">近</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">200</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">TP20</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">多度,用手感受</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PACK2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">冲压空气入口风量明显小于</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">PACK1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。其他由于控制器和传感器造成的空调温度不正常,可以通过测试得到结果。另外,</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">FCV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">开度小,导致引气进入空调组件的量小,不足以很好地驱动</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">为核心的部件,也会导致组件出口温度高。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><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'">电子舱通风故障处理;滤子更换,活门超控</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">:</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电子舱通风分为地面和空中两种构型,地面也会根据场温不同进气阀和出气阀构型开度不一样。电子舱通风的空气循环动力来自于抽风扇和排风扇,冷却气源来自于地面外界空气和飞机空调冷气。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">航线维护中碰到的电子舱通风故障有几个种类:电子舱通风系统故障</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">VENT AVNCS SYS FAULT</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">和具体通风部件的警告(如</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">VENT BLOWER FAULT</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">),遇到这种情况首先是复位测试,如果正常也需要检查电子舱几个气滤,往往是气滤很脏导致空气循环不畅压力低,压力传感器探测到后会触发系统故障;同时还要检查飞机左侧的进气阀门处,如果滤网上有如纸张、塑料袋一类的东西粘住导致进气量减少,也会触发警告。如果是</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">AEVC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">或者是某些阀门(如</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">SKIN VLV</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">)的故障,可以通过测试得知。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">3.3</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">电子舱通风某些部件故障可以办保留,机组需要有超控</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">OVRD</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">动作,维护方面也要对如进出口阀超控致某种构型,这个需要对照</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">MEL</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">M</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">程序严格执行!</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">.配平空气活门更换:</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">4.1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这几个活门的更换只要按照手册的程序来进行并不复杂,电插头较多容易混淆,在排故隔离时有时候可能忘记装好,我们也发生过类似问题,以后工作中的检查制度大家一定要坚持。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5.ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">更换:</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">5.1ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">自身较重,吊在空调舱天花板上,需要先拆除一些管子和旁通阀。然后拆掉其上的电插头、管路等,最后,松掉吊点取下</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。更换时管路较多,封圈较多,要对照相应</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">IPC</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">领来装好各个封圈,确保气密性。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">6.</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">集气室检查更换:</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">6.1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">集气室装在主热交换器和冲压空气出口之间,由复合材料制成,作用是在</SPAN><SPAN lang=EN-US><FONT face="Times New Roman">ACM</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">风扇转动时造成吸力,产生足够的空气流,用来热交换。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">6.2</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">打开空调舱盖板检查集气室,结合从冲压空气出口伸入手机或相机照相,可以较好地看到集气室的状况。</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">7.</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">抽风扇、排风扇更换:</SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT face="Times New Roman">7.1</FONT></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">安装时注意风扇壳体上的气流方向箭头指示。</SPAN></P> 辛苦辛苦,学习学习 ATA21-飞机空调系统常见故障排除 需要21章··· THANKS A LOT
谢谢了。。。 好东西,大家一起学习 涂油i会哦胡
页:
[1]