CT常见故障分类及产生原因

admin · 发表于 2020-10-19 22:54:23

<p style="font-size: 16px;white-space: normal;line-height: 25.6px;max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"><img class="__bg_gif" data-ratio="0.10555555555555556" src="http://mmbiz.qpic.cn/mmbiz/M2H0aGBjWUTRia7nqkArYeKZUqEfdmpNibMPiaZk4gvlWk5v5lUKyXhjJP4CENKQeQt5HI8zwcTCWJOkicfWJiatdJQ/0?wx_fmt=gif" data-type="gif" data-w="720" width="auto" style="font-size: 16px;white-space: normal;line-height: 25.6px;font-family: Arial, Verdana, Helvetica, sans-serif, 宋体;color: rgb(63, 63, 63);text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: auto !important;" /><p style="font-size: 16px;white-space: normal;line-height: 25.6px;max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="font-size: 16px;white-space: normal;line-height: 25.6px;max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"><section label="Copyright ? 2016 playhudong All Rights Reserved." donone="shifuMouseDownPayStyle('shifu_t_048')" style="margin-top: 1em;max-width: 100%;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;width: 668px;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"><section class="" style="max-width: 100%;width: 0px;height: 0px;border-top-width: 7px;border-top-style: solid;border-top-color: transparent;border-left-width: 12px;border-left-style: solid;border-left-color: rgb(58, 102, 229);border-bottom-width: 7px;border-bottom-style: solid;border-bottom-color: transparent;display: inline-block;box-sizing: border-box !important;word-wrap: break-word !important;"></section><section class="" style="margin-left: -7px;max-width: 100%;width: 0px;height: 0px;border-top-width: 7px;border-top-style: solid;border-top-color: transparent;border-left-width: 12px;border-left-style: solid;border-left-color: rgb(58, 102, 229);border-bottom-width: 7px;border-bottom-style: solid;border-bottom-color: transparent;display: inline-block;opacity: 0.7;box-sizing: border-box !important;word-wrap: break-word !important;"></section><section class="" style="margin-left: -7px;max-width: 100%;width: 0px;height: 0px;border-top-width: 7px;border-top-style: solid;border-top-color: transparent;border-left-width: 12px;border-left-style: solid;border-left-color: rgb(58, 102, 229);border-bottom-width: 7px;border-bottom-style: solid;border-bottom-color: transparent;display: inline-block;opacity: 0.5;box-sizing: border-box !important;word-wrap: break-word !important;"></section>一、故障分类</section><p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（一）硬件故障<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">硬件包括系统的全部参与系统工作的部件，按其功能可分为如下部分：<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（1）扫描系统、X线系统、DAS数据变换及传输系统、旋转运动控制系统、床运动控制系统、扫描架倾斜控制系统、高压系统、滑环系统，在SCT中整个扫描系统又分为静止部分和旋转部分，它们由滑环分开<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（2）图像处理系统<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（3）计算机控制系统<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（4）操作台控制系统<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（5）图像显示系统<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（6）照相系统<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（7）其他辅助系统<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">硬件故障基本上是由于硬件的某一部分损坏或工作状态不佳引起，其又可分为：机械故障和电路故障。辅助设备是扫描系统主设备以外的配套设备：如稳压器、高压注射器、空调设备等。辅助设备的稳定性关系着整个机器的可靠运行，因此不可忽视。<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（二）软件故障<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">软件通常包括：操作系统、扫描程序、调试维修程序、检查程序四个大部分。软件故障往往由硬件故障引起导致系统软件的破坏或参数的改变。<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <section label="Copyright ? 2016 playhudong All Rights Reserved." donone="shifuMouseDownPayStyle('shifu_t_048')" style="margin-top: 1em;max-width: 100%;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;width: 668px;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"><section class="" style="max-width: 100%;width: 0px;height: 0px;border-top-width: 7px;border-top-style: solid;border-top-color: transparent;border-left-width: 12px;border-left-style: solid;border-left-color: rgb(58, 102, 229);border-bottom-width: 7px;border-bottom-style: solid;border-bottom-color: transparent;display: inline-block;box-sizing: border-box !important;word-wrap: break-word !important;"></section><section class="" style="margin-left: -7px;max-width: 100%;width: 0px;height: 0px;border-top-width: 7px;border-top-style: solid;border-top-color: transparent;border-left-width: 12px;border-left-style: solid;border-left-color: rgb(58, 102, 229);border-bottom-width: 7px;border-bottom-style: solid;border-bottom-color: transparent;display: inline-block;opacity: 0.7;box-sizing: border-box !important;word-wrap: break-word !important;"></section><section class="" style="margin-left: -7px;max-width: 100%;width: 0px;height: 0px;border-top-width: 7px;border-top-style: solid;border-top-color: transparent;border-left-width: 12px;border-left-style: solid;border-left-color: rgb(58, 102, 229);border-bottom-width: 7px;border-bottom-style: solid;border-bottom-color: transparent;display: inline-block;opacity: 0.5;box-sizing: border-box !important;word-wrap: break-word !important;"></section>二、故障原因及检修方法</section> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">1. 设备的因素<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（1）设备的质量：造成设备质量问题的原因很多，其中有 <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">a设计的原因：机器在设计时留的余地太小，例如：电源的容量不足而负载又太重；系统抗干扰能力弱；信号传递的匹配不佳；机械传动过于紧张；元件耐压不够；元器件选择不合适等<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">b制造加工安装调试：生产过程中的质量检查与监督不严，造成不合格的产品出厂，例如：应当拧紧的螺丝没有拧紧；应当紧固的部件没有紧固；X线管安装的位置不佳等<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">c元器件的质量不好：例如：旋转部件耐磨性能差（如轴承）；元器件的耐压不够；元器件的热稳定不好等等<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（2）设备的老化：由于使用时间长而导致设备的老化，例如：X线管使用久了出射线量降低，因而导致伪影出现：滑动电位器的老化；滑环与碳刷使用久了导致接触电阻增大；接触器继电器的老化等<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">2. 人为的因素<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（1）安装调试：无论在机器出厂时还是在维修过程中安装调试欠佳引起的故障时常发生。例如：X线管的安装与调试；准直器的调试；X线管参数的调整等<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（2）操作使用：操作使用不当也是常常引起故障的原因之一。例如：开机与关机的过程中没有按规定的程序执行；机器在扫描前没有进行必要的预热，停机后立即断电使得X线管没有得到必要时间的冷却；开机不开空调使室内温度升高；停机之前没有按规程退出程序等<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（3）维修保养：适当的适时的维修保养对于延长机器的使用寿命至关重要。例如：机器内部的空气过滤网必须经常除尘，以便使得机器有良好的通风散热；经常地检查图像质量；对于SCT经常地清洁碳刷与滑环之间的碳屑同时检查碳刷磨损的情况必要时及时更换；对于一些运动部件必要时要加以润滑以减少磨损；经常地检查运动部件的紧固情况<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">3. 环境因素<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（1）电源：电源通常是电网供电电源。电网电源对于CT扫描系统的正常工作至关重要，对这一点应有足够的重视。<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">a电源电压的稳定性：有些用户所在地区的电网的性能很差，不但稳定性不好而且经常掉电，突然地掉电对机器的损害是很大的，恢复供电后往往会引起故障<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">b电网电源的纯净：较多的电源杂波和尖峰脉冲也会影响CT，从而引起很多莫名其妙的故障<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">c供电：有的用户用一个电源变压器供给医院所有部门，空调机也和CT设备公用一条线路，空调机的频繁启动会影响CT机的稳定性，有时也会发生故障<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（2）地线：CT的地线非常重要，接地不好往往引起机器的不稳定性，CT的地线应当单独埋设<p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);font-size: 16px;line-height: 25.6px;white-space: normal;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">（3）温湿度：CT室内的温度应该保持在1822摄氏度，相对湿度应当保持在40%65%<p style="font-size: 16px;white-space: normal;line-height: 25.6px;max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="font-size: 16px;white-space: normal;line-height: 25.6px;max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);"> <p style="font-size: 16px;white-space: normal;line-height: 25.6px;max-width: 100%;min-height: 1em;color: rgb(62, 62, 62);text-align: center;font-family: 微软雅黑;box-sizing: border-box !important;word-wrap: break-word !important;background-color: rgb(255, 255, 255);">一种友谊 | 分享传递智慧 <p style="font-size: 16px;white-space: normal;line-height: 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