CN201426191Y - 汽轮机螺栓感应电加热器 - Google Patents

汽轮机螺栓感应电加热器 Download PDF

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CN201426191Y
CN201426191Y CN2009200256506U CN200920025650U CN201426191Y CN 201426191 Y CN201426191 Y CN 201426191Y CN 2009200256506 U CN2009200256506 U CN 2009200256506U CN 200920025650 U CN200920025650 U CN 200920025650U CN 201426191 Y CN201426191 Y CN 201426191Y
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杨树森
鞠彦波
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Shandong Aoneng Electric Power Science & Technology Co ltd
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Jinan Germany & China Power Technology Co Ltd
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Abstract

本实用新型涉及一种拨汽轮机螺栓时的汽轮机螺栓感应电加热器，是由感应电源和圆柱形的空心铜导体组成，空心铜导体分为进水通道和出水通道，进水通道与出水通道之间为隔板；空心铜导体的一端封闭，一端开口，位于封闭端的进水通道与出水通道相连通；空心铜导体的外径小于螺栓的内孔直径，空心铜导体的长度大于螺栓内孔的长度。本实用新型的有益效果是，具有加热快，不易损坏，热效率高的优点。

Description

汽轮机螺栓感应电加热器
技术领域
本实用新型涉及一种拨汽轮机螺栓时的加热器，特别涉及一种汽轮机螺栓感应电加热器。
背景技术
由于汽轮机长期处于高温高压的运行环境，汽轮机螺栓与汽轮机的结合非常紧密。当需要拨出螺栓时，必须将螺栓加热到一定温度，才能拨出。
现有的电加热器采用电阻丝加热的方法，存在加热慢，易于损坏，热效率低的缺点。传统电加热器使用电阻丝作为热源，外部以钢管作为护套，中间填加石英砂作为导热绝缘物，相当部分的热量被浪费在石英砂上用于克服石英砂所形成的热阻，所以加热效率和速度不高。
发明内容
本实用新型为了克服以上技术的不足，提供了一种加热快，不易损坏，热效率高的汽轮机螺栓感应电加热器。
本实用新型是通过以下措施来实现的：
本实用新型的汽轮机螺栓感应电加热器，是由感应电源和圆柱形的空心铜导体组成，空心铜导体分为进水通道和出水通道，进水通道与出水通道之间为隔板；空心铜导体的一端封闭，一端开口，位于封闭端的进水通道与出水通道相连通；空心铜导体的外径小于螺栓的内孔直径，空心铜导体的长度大于螺栓内孔的长度。
本实用新型的汽轮机螺栓感应电加热器，所述的感应电源带有感应淬火变压器，空心铜导体可以产生感应交变磁场，中频交变磁场在螺栓上激发出中频涡流电场，产生涡流电流，涡流电流产生焦耳热，迅速加热汽轮机螺栓，然后用螺栓拨出器将螺栓拨出。进水通道和出水通道通有冷却水，可以冷却空心铜导体。
本实用新型的有益效果是，具有加热快，不易损坏，热效率高的优点。
附图说明
附图1为本实用新型的空心铜导体的结构示意图
图中，1空心铜导体，2进水通道，3出水通道，4隔板。
具体实施方式
下面结合附图和具体实施方式对本实用新型作具体的说明。
如图1所示，为本实用新型的空心铜导体的结构示意图，空心铜导体1内具有进水通道2、出水通道3和隔板4，空心铜导体的外径略小于螺栓的内孔直径，空心铜导体的长度略大于螺栓内孔的长度。
上述空心铜导体的加工方法为：将两个横截面呈半圆形的中空的铜导体平行对接，焊接为一体，然后用封头将一端封闭，另一端开口。
空心铜导体与感应电源相连，进水通道和出水通道与冷却水相连。
感应电源带有感应淬火变压器，其功率为5-10KW，频率为10-20kHz，电压为400V。通电后，1-3分钟可以将汽轮机螺栓加热至400℃。其原理为感应加热原理，中频交变磁场在螺栓上激发出中频涡流电场，产生涡流电流，螺栓为钢制，有电阻，涡流电流产生焦耳热。这样，加热功率直接作用于螺栓上，避免了传统电阻加热的中间传热过程。从而具有高效率、高功率密度的特点。

Claims (1)

1.一种汽轮机螺栓感应电加热器，其特征在于：是由感应电源和圆柱形的空心铜导体组成，空心铜导体分为进水通道和出水通道，进水通道与出水通道之间为隔板；空心铜导体的一端封闭，一端开口，位于封闭端的进水通道与出水通道相连通；空心铜导体的外径小于螺栓的内孔直径，空心铜导体的长度大于螺栓内孔的长度。
CN2009200256506U 2009-05-19 2009-05-19 汽轮机螺栓感应电加热器 Expired - Fee Related CN201426191Y (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103874251A (zh) * 2014-04-03 2014-06-18 镇江力帆防爆电器有限公司 软管安全型汽轮机螺栓电加热器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103874251A (zh) * 2014-04-03 2014-06-18 镇江力帆防爆电器有限公司 软管安全型汽轮机螺栓电加热器
CN103874251B (zh) * 2014-04-03 2015-11-25 镇江力帆防爆电器有限公司 软管安全型汽轮机螺栓电加热器

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