案例分享 | 加水后机身后部余水口漏水B737系列机务在线

ryn_82 发表于 2022-12-13 17:42:52

案例分享 | 加水后机身后部余水口漏水

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   <span style="font-size: 15px;">为了防止结冰对水系统部件造成损伤，737NG水系统在一些关键地方使用了电加温。</span>
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   <span style="font-size: 15px;">SDS 30-71-00：</span>
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   <span style="font-size: 15px;letter-spacing: 2px;">但是手册中对这些部件并没有太多的介绍。平时也基本接触不到这些部件。AMM 30-71-06/401 - HEATED POTABLE WATER HOSES - REMOVAL/INSTALLATION：</span>
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                        <strong style="outline: 0px;visibility: visible;">1</strong>
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               <strong style="outline: 0px;visibility: visible;">事件背景</strong>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">某737-800飞机，航前加水时反映后部机身余水口滴水。检查放水手柄和加水手柄均已关闭，客舱正常出水。</span>
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http://mpvideo.qpic.cn/0b2euaaamaaawyanr24x7rrvbigda2qaabqa.f10002.mp4?dis_k=6e20075323b9db3a7e728f410a31bc25&dis_t=1670926129&vid=wxv_2706247204256137221&format_id=10002&support_redirect=0&mmversion=false
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">航后加水检查发现同样位置余水口滴水。</span>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">打开货舱壁板，详细检查发现清水箱旁一根管子有水流出，附近有积水，余水口的水就是从这里来的：</span>
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http://mpvideo.qpic.cn/0bc3heaacaaaiuan6kux3brvaoodae4qaaia.f10102.mp4?dis_k=00c68f329558095cb3b41557c6187c58&dis_t=1670926129&vid=wxv_2706248917897756674&format_id=10102&support_redirect=0&mmversion=false
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">现场排故人员提出了两个问题：</span>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">1.这管子没连接的这头该不该连在哪？</span>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">2.这个管子是干啥用的，是不是不该出水？</span>
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                        <strong style="outline: 0px;visibility: visible;">2</strong>
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               <strong style="outline: 0px;visibility: visible;">排故过程</strong>
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   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">首先从IPC 38-10-00-32A找到这根管子：</span>
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   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">由于手册上对这根管子没有过多介绍，我们需要查找工程图纸：</span>
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   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">I</span><span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">P</span><span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">C找到MODULE NUMBER:417A2410-100 REV C</span><br/>
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   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">通过MPL找到其图纸为417A2410 SHEET 152<br/></span>
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   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">打开图纸：</span>
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   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">从图纸上可以看出这根管子其实是护罩（BOE2356-0003）的余水管（DRAIN HOSE），一头确实没有连接（LEAVE END OPEN），而是直接靠在水箱支撑结构上的（REST ON WATER TANK SUPPORT STUCTURE）。</span>
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   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">另外又找了一架飞机对比，其他飞机这根管及其周围是干燥的</span><span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">，初步判断该护罩里面包裹着</span><span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">的四通接头存在渗漏</span><span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">。</span>
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<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">拆开橡胶护罩后，发现护罩里有积水，但是并未发现里面的管路和接头有明显的渗漏：<br/></span>
</section>
<p style="text-align: left;padding: 0px 0.5em;">
   <span style="background-color: #ffffff;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;text-indent: 0em;text-align: justify;color: #d92142;">▲</span><span style="background-color: #ffffff;color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;text-indent: 0em;text-align: justify;">RIBBON WATER HEATER，设备号M02763，件号HR107</span>
</p>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;"><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">初步判断</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">的护罩内的</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">四通接头存在渗漏，但</span>由于太晚机场加水的下班了，无法加水验证，计划次日白天加水检查。 </span>
</section>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;" class="">
   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">但在白天加水</span><span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">后并未发现渗漏：</span><br/>
</section>
<section class="_editor">
http://mpvideo.qpic.cn/0bc3kuaacaaaouao5tux3nrvavodafkqaaia.f10002.mp4?dis_k=f4d0d5318843b978ea9c87af71ee0594&dis_t=1670926129&vid=wxv_2706320395901124610&format_id=10002&support_redirect=0&mmversion=false
</section>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;"></span>
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<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span style="color:#3f3f3f;"><span style="font-size: 15px;">但是发现机身后部排水口持续有水流出，进一步检查发现是后厨房一个烧水器漏水导致，更换烧水器后正常。</span></span>
</section>
<p>

</p>
<p>

</p>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span style="color:#3f3f3f;"><span style="font-size: 15px;">当然，烧水器漏水这个故障和之前的加水时余水口滴水故障无关。<br/></span></span>
</section>
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   <span style="color:#3f3f3f;"><span style="font-size: 15px;"><br/></span></span>
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            <section style="margin-bottom: 10px;outline: 0px;font-size: 19px;visibility: visible;">
               <section style="margin-right: auto;margin-left: auto;outline: 0px;display: inline-block;border-width: 1px;border-style: solid;border-color: #f7f7f7;background-color: #f7f7f7;width: 1.8em;height: 1.8em;line-height: 1.8em;border-radius: 100%;font-size: 24px;color: #d92142;visibility: visible;">
                     <p style="outline: 0px;visibility: visible;">
                        <strong style="outline: 0px;visibility: visible;">3</strong>
                     </p>
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            </section>
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   <section style="margin-bottom: 15px;outline: 0px;visibility: visible;">
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            <p style="outline: 0px;text-align: center;visibility: visible;">
               <strong style="outline: 0px;visibility: visible;">故障分析</strong>
            </p>
         </section>
   </section>
</section>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;" class="">
   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">由于之前的故障现象在后续测试时未能再现，只能事后从结果上分析，认为应该是水箱加水到满位后，排放/溢流口结冰导致排水不畅，<span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">加水压力导致</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">水从</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">加热</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">带软管</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">接头</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">处流出，然后水通过余水管流到余水口流出。</span></span>
</section>
<p style="text-align: center;padding: 0px 0.5em;">

</p>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;"></span>
</section>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span style="color: #3f3f3f;font-size: 15px;letter-spacing: 0.544px;text-indent: 0em;">HEATER TAPE处的接头连接的软管都是使用卡箍，在高压下容易出现漏水：</span>
</section>
<p style="text-align: center;padding: 0px 0.5em;">

</p>
<p style="text-align: center;padding: 0px 0.5em;">

</p>
<p style="text-align: left;padding: 0px 0.5em;">
   <span style="font-size: 15px;">以上是个人分析，有出现类似情况的欢迎留言。</span><br/>
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案例分享 | 加水后机身后部余水口漏水