CN117810787A - 磁约束核聚变装置单匝环接头现场制造及单匝环安装工艺 - Google Patents
磁约束核聚变装置单匝环接头现场制造及单匝环安装工艺 Download PDFInfo
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Abstract
本发明公开了一种磁约束核聚变装置单匝环接头现场制造及单匝环安装工艺，接头现场制造工艺包括将信号线导体与测量线导体绞接在一起，在铰接处套入铜套管并灌入环氧胶，以及在外部套入不锈钢管套并灌入环氧胶等步骤；单匝环安装工艺包括安装过渡板等步骤。本发明不仅能够确保连接后单匝环中铠装测量线的整体性能，而且现场操作方便，连接牢固，能够满足核聚变装置中对于单匝环的绝缘电阻和气密性使用要求。采用该工艺形成的单匝环以及单匝环在真空室内的安装具有性能稳定、安装精度高的优势。
Description
技术领域
本发明属于电线电缆加工技术领域，具体涉及一种磁约束核聚变装置单匝环接头现场制造及单匝环安装工艺。
背景技术
磁约束核聚变装置（如EAST装置，即超导托卡马克装置）中的单匝环，是用来测量装置中不同位置极向磁通值的关键部件，主要由不锈钢铠装（外径2mm）绝缘导线制成的铠装测量线和信号引出线现场制造而成。铠装测量线由无磁不锈钢套管、测量线导体、氧化镁粉末组成，无磁不锈钢套管中插入测量线导体（通常为0.5mm的无氧铜丝），再填充氧化镁粉末绝缘制成。
由于铠装测量线长度无法确定，两端引出信号线无法线下提前预制，故在装配单匝环时需要在现场进行接头制造。传统工艺直接使用信号线导体和测量线导体绞制连接，外侧使用聚酰亚胺胶带包裹，以满足当时的绝缘要求；但是在使用过程中由于接头不牢靠，容易出现脱落、绝缘破坏等故障，连接工艺不能满足实际需要，造成单匝环以及所在真空室性能不稳定的情况发生。
另外，单匝环需要较高的安装精度，一要保证在大环方向上与赤道面平行，二要求所有的单匝环对应装置的坐标原点为同心圆，三是精确测量在极向的坐标位置。如何保证了EAST装置电磁信号采集的准确性，从而保证了EAST装置的稳定运行，是单匝环安装时所要考虑的关键性因素。
发明内容
本发明的目的在于克服现有技术的不足，第一方面提供一种能够确保连接后单匝环整体性能的磁约束核聚变装置单匝环接头现场制造工艺。
一种磁约束核聚变装置单匝环接头现场制造工艺，用于铠装测量线与信号引出线的连接，铠装测量线包括测量线导体，以及包裹在测量线导体外的无磁不锈钢套管，无磁不锈钢套管与测量线导体间填充有氧化镁粉末，信号引出线包括信号线导体，以及包裹在信号线导体外的绝缘皮；
所述制造工艺包括以下步骤：
（1）、剥除铠装测量线两端无磁不锈钢套管，使测量线导体露出；
（2）、将环氧胶涂抹在无磁不锈钢套管与测量线导体的相接处，使环氧胶渗入氧化镁粉末中；
（3）、使环氧胶完全固化；
（4）、测试测量线导体与无磁不锈钢套管之间的绝缘电阻，绝缘电阻大于500MΩ时进行下一步骤；
（5）、剥除信号线一端绝缘皮，使信号线导体与测量线导体绞接在一起；
（6）、在信号线导体与测量线导体的绞接处套入铜套管，并压实；
（7）、往铜套管内灌入环氧胶，排出空气后固化；
（8）、在无磁不锈钢套管与信号线之间套入不锈钢管套，并夹紧固定；
（9）、从信号线端的不锈钢管套处灌入并填满环氧胶后固化；
（10）、测试信号线导体与无磁不锈钢套管之间的绝缘电阻，绝缘电阻大于500MΩ时，即为合格。
本发明第二方面，提供种一种单匝环安装工艺，用于将单匝环安装在真空室中，包括以下步骤：
（1）、在过渡板沿真空室经纬环的纬度上开设用于嵌设单匝环的圆弧槽；
（2）、安装过渡板，采用激光跟踪仪进行准直测量后焊接固定，将上述过渡板固定在沿真空室经纬环的经度上；
（3）、将单匝环的一段放入步骤的圆弧槽处；
（4）、将压板压在过渡板上，保证贴合即可。
本发明不仅能够确保连接后单匝环中铠装测量线的整体性能，而且现场操作方便，连接牢固，能够满足核聚变装置中对于单匝环的绝缘电阻和气密性使用要求。采用该工艺形成的单匝环以及单匝环在真空室内的安装具有性能稳定、安装精度高的优势。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本实施例中步骤（3）时铠装测量线的结构示意图；
图2为本实施例步骤（10）时铠装测量线与信号引出线的接头结构示意图；
图3及图4为单匝环与真空室的装配结构示意图。
具体实施方式
下面结合附图对本发明的优选实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
本实施例提供的一种磁约束核聚变装置单匝环接头现场制造工艺，如图1所示，包括以下步骤：
（1）、在EAST装置内部环线位置布置铠装测量线并固定；铠装测量线包括无磁不锈钢套管1，测量线导体2插入无磁不锈钢套管1中，无磁不锈钢套管1与测量线导体2间填充有氧化镁粉末3；
（2）、剥除铠装测量线两端无磁不锈钢套管1，使测量线导体2露出30mm；
（3）、使用环氧胶4涂抹在无磁不锈钢套管1与测量线导体2的相接处，使环氧胶渗入氧化镁粉末3中；
（4）、用热风枪烘烤3~4s加速环氧胶4固化，然后静置4h，使环氧胶4完全固化；
（5）、使用摇表测试测量线导体2与无磁不锈钢套管1之间的绝缘电阻，绝缘电阻需大于500MΩ；
（6）、如图2所示，剥除信号线5一端绝缘皮，使信号线导体6与测量线导体2绞接在一起；
（7）、在信号线导体6与测量线导体2的铰接处套入铜套管7，并用钳子压实，防止脱落；
（8）、往铜套管7内灌入环氧胶4，并排出内部空气；固化后，外侧用热缩套管（图未示）进行保护；
（9）、在无磁不锈钢套管1与信号线5之间套入不锈钢管套8（4mm薄壁），并使用钳子夹紧固定；
（10）、从信号线5端的不锈钢管套8处灌入环氧胶4并填满，固化4h后进行绝缘测试；
（11）、使用摇表测试信号线导体6与无磁不锈钢套管1之间的绝缘电阻，绝缘电阻需大于500MΩ，即为合格。
经检测，采用该连接工艺制造的铠装测量线与信号引出线接头不仅不易被折断，而且可有效保证信号线导体6的绝缘≥500兆欧，满足EAST真空室内部使用的气密性要求，同样也适合核聚变装置内其它铠装测量线与信号引出线的接头现场制造。
本实施例还提供一种单匝环安装工艺，如图3及图4所示，该单匝环9在真空室10（图中所示为局部的真空室扇区，真空室由多组真空室扇区围绕构成）中的安装方法，包括以下步骤：
（1）、在过渡板11沿真空室10经纬环的纬度上开设用于嵌设单匝环9的圆弧槽；
（2）、将上述过渡板11固定在沿真空室10经纬环的经度上，为了保证与真空室一致的空间位置，最好使用激光跟踪仪进行准直测量，测量精度满足要求后进行断续加强焊固定；
（3）、将单匝环9的一段放入步骤1的圆弧槽处；
（4）、将压板12压在过渡板11上，保证贴合即可。
由于单匝环9线体尺寸小难以测量，但过渡板11尺寸较大，所以能通过光学测量仪器进行定位，通过此种间接的方式保证了单匝环的安装精度，从而保证EAST装置的稳定运行。
单匝环的安装以EAST装置经纬环结构为基准，在经纬环和过渡定位块上开槽，安装完毕后，采用光学测量系统从各个不同的环向水平窗口进行测量，与经纬环的基准进行比较，最后给出精确的单匝环线圈沿极向的位置坐标。通过安装精度的保证，可以满足不同位置极向磁通量的测量。配合上述电缆测量线与信号引出线的连接工艺保证了EAST装置电磁信号采集的准确性，从而保证了EAST装置的稳定运行。
以上所述仅是本发明的优选实施方式，本发明的保护范围并不仅局限于上述实施例，凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理前提下的若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。
Claims (2)
1.一种磁约束核聚变装置单匝环接头现场制造工艺，用于铠装测量线与信号引出线的连接，铠装测量线包括测量线导体，以及包裹在测量线导体外的无磁不锈钢套管，无磁不锈钢套管与测量线导体间填充有氧化镁粉末，信号引出线包括信号线导体，以及包裹在信号线导体外的绝缘皮，其特征在于：
包括以下步骤：
（1）、剥除铠装测量线两端无磁不锈钢套管，使测量线导体露出；
（2）、将环氧胶涂抹在无磁不锈钢套管与测量线导体的相接处，使环氧胶渗入氧化镁粉末中；
（3）、使环氧胶完全固化；
（4）、测试测量线导体与无磁不锈钢套管之间的绝缘电阻，绝缘电阻大于500MΩ时进行下一步骤；
（5）、剥除信号线一端绝缘皮，使信号线导体与测量线导体绞接在一起；
（6）、在信号线导体与测量线导体的绞接处套入铜套管，并压实；
（7）、往铜套管内灌入环氧胶，排出空气后固化；
（8）、在无磁不锈钢套管与信号线之间套入不锈钢管套，并夹紧固定；
（9）、从信号线端的不锈钢管套处灌入并填满环氧胶后固化；
（10）、测试信号线导体与无磁不锈钢套管之间的绝缘电阻，绝缘电阻大于500MΩ时，即为合格。
2.一种单匝环安装工艺，将权利要求1所述的单匝环安装在真空室中，其特征在于：包括以下步骤：
（1）、在过渡板沿真空室经纬环的纬度上开设用于嵌设单匝环的圆弧槽；
（2）、安装过渡板，采用激光跟踪仪进行准直测量后焊接固定，将上述过渡板固定在沿真空室经纬环的经度上；
（3）、将单匝环的一段放入步骤的圆弧槽处；
（4）、将压板压在过渡板上，保证贴合即可。
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