DSA 球管过热故障检修案例分析

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                    <section style="padding: 1em; max-width: 100%; box-sizing: border-box; white-space: normal; font-family: 微软雅黑; color: rgb(255, 255, 255); font-size: 1.4em; font-weight: bold; line-height: 1.4em; box-shadow: rgb(221, 221, 221) 0em 0.2em 0.2em; word-wrap: break-word !important; background-color: rgb(249, 110, 87);"><span style="max-width: 100%; font-size: 20px; box-sizing: border-box !important; word-wrap: break-word !important;">DSA 球管过热故障检修案例分析</span></section><p style="max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); line-height: 21.3333px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p></p><section style="margin-top: 1.5em; max-width: 100%; box-sizing: border-box; color: rgb(62, 62, 62); white-space: normal; font-family: 微软雅黑; line-height: 25.6px; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><section class="" data-brushtype="text" data-width="60%" style="margin-left: 0.5em; padding: 0.2em; max-width: 100%; box-sizing: border-box; display: inline-block; width: 400.797px; font-size: 1em; color: inherit; word-wrap: break-word !important;">DSA 球管过热检修分析：</section></section><section class="" style="padding: 1em; max-width: 100%; box-sizing: border-box; color: inherit; font-size: 1em; white-space: normal; font-family: 微软雅黑; line-height: 25.6px; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;">第一台 DSA 机，西门子平板型心脏介入治疗专用 DSA 机，型号: Artis DFC。&nbsp;</p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="text-align:center"><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz/dx3KibwtDhvfsahAv0ia7DgbQPGORk8fffFcygicvWJ58LUp3sX048LGHjqKt8JgyGymFo2cAtFfNsDgsVo2e0yMA/0?wx_fmt=jpeg" data-ratio="0.8407643312101911" data-w="157"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 41, 65); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">1.故障现象:</strong></span></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></strong></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp; 较长时间关机后开机正常，能够正常输入新患者检查信息，更改机器检查模式、浏览既 往诊治患者影像资料等操作。患者介入诊疗开始， 进行透视操作约 3—5min 后，机器报警，提示球管过热，机器过热保护，球管不再产生 X 线。</p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 41, 65); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">2.故障分析:</strong></span></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 41, 65); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></strong></span></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;">&nbsp; &nbsp;较长时间关机后，机器能够正常启动表明此时机器各个系统能够通过机器启动时的各项检测。而且，患者信息处理正常说明机器计算机系统及软件无故障，可基本排除计算机系统故障， 引起计算机误判机器工作状态，导致机器错误报警并进入保护状态。患者开始介入诊疗工作后，机器报警提示球管过热应该是球管实际使用时的温度过 高所致。该 DSA 机平常使用时，连续透视或摄影 10min 都不会产生球管过热和球管保护，不能产生 X 线的状况，这次故障应该首先考虑球管冷却系统故障。&nbsp;</p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 41, 65); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">3.检修过程:&nbsp;</strong></span></p><p style="max-width: 100%; min-height: 1em; white-space: normal; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 41, 65); box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></strong></span></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">检查球管:&nbsp;</strong></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;">球管外观完整，外壳没有磕碰、破裂，没有溢油及烧灼的痕迹。球管外壳温度较平常检测明显偏高，有烫手的感觉。球管内部没有听到异常声响。</p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">打开机柜检查:&nbsp;</strong></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;">球管冷却液液面高度正常; 冷却液温度较低; 散热器上积有较多灰尘，表面温度正常偏低; 散热器风扇工作正常。以吸尘器清理散热器后，故障未能消除。</p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">对照机器图纸检查显示:&nbsp;</strong>该机采用油水两级散热。</p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;">第一级: 冷却油将球管靶面产生的热量导出，在球管内通过热交换器 与机柜内的冷却系统———第二级管路相联通，通过管路将球管产生的热量传递到机柜散热器，经风扇驱动空气将热量散发到环境中。机柜内冷却液温度较低说明球管产生的热量未能通过冷却系统的第二级管路有效传递到机柜内的散热器。</p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">拆开球管检查球管内冷却系统显示:&nbsp;</strong></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;">第一级管路及热交换器温度明显偏高; 触之，有烫手的感觉。显然，冷却系统第二级未能有效地将热量带离球管; 结合机柜内冷却液及散热器温度偏低，首先考虑冷却系统第二级冷却液循环障碍。检查二级冷却液循环泵发现泵损坏，不能驱动冷却系统第二级管路中的冷却液正常循环。</p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><br style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"  /></p><p style="text-align:center"><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz/dx3KibwtDhvfsahAv0ia7DgbQPGORk8fffORIWxVTS1NZjfsofXRfIqXbEXCiafWd3qNuYgtfhutDxEoDrGqmC28w/0?wx_fmt=jpeg" data-ratio="0.5" data-w="510"  /></p><p style="text-align:center"><br  /></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">立即订购新的冷却循环泵，订单显示:&nbsp;</strong></p><p style="max-width: 100%; min-height: 1em; white-space: normal; line-height: 2em; box-sizing: border-box !important; word-wrap: break-word !important;">设备将在一周后到达。我院病人较多，正常使用三台 DSA 机已经处于严重加班状态，如果一台机器停止使用，将导致病房患者严重积压，甚至会有患者因为病情严重丧失诊断和治疗的机会。考虑到机器球管过热是二级散热冷却液循环障碍所致。恢复冷却液循环，球管过热现象应该会立即消失。机器将立即恢复正常工作状态。咨询西门子公司冷却液的成分，得知冷却液的主要成分是纯净水。如果利用自来水的压力将其接入到冷却系统的第二级，建立有效的水循环，不失为简单有效的应急手段。立即购买铝塑管。通过该管将自来水接入冷却系统第二级的进水端，将另一根铝塑管接入冷却系统第二级的出水端，引向下水道，建立通畅的进出水通路和压力梯度。开启自来水，建立有效水循环，开启 DSA 机，模拟患者检查和治疗，故障消失，恢复患者正常检查和治疗。一周后，冷却液循环泵到货。将新泵安装到位，机器故障完全消除。</p></section><p></p><p style="max-width: 100%; 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