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标题翻译：大功率旋转阳极X射线管结构阳极盘结构的混合设计

公开(公告)号：WO2009022292A3

公开(公告)日：2009-11-12

申请号：PCT/IB2008053225

申请日：2008-08-12

申请人： PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , UNIV DRESDEN TECH , LEWALTER ASTRID , PIETIG RAINER , LANGKAMP ALBERT , RICHTER HEIKO , BEHNISCH THOMAS , HUFENBACH WERNER , BEHLING ROLF K O , BATHE CHRISTOPH

发明人： LEWALTER ASTRID , PIETIG RAINER , LANGKAMP ALBERT , RICHTER HEIKO , BEHNISCH THOMAS , HUFENBACH WERNER , BEHLING ROLF K O , BATHE CHRISTOPH

IPC分类号： H01J35/10

CPC分类号： H01J35/108 , H01J2235/081 , H01J2235/088 , H01J2235/1006

摘要： The present invention is related to high power X-ray sources, in particular to those ones that are equipped with rotating X-ray anodes capable of delivering a much higher short time peak power than conventional rotating X-ray anodes according to the prior art. The herewith proposed design principle thereby aims at overcoming thermal limitation of peak power by allowing extremely fast rotation of the anode and by introducing a lightweight material with high thermal conductivity (2) in the region adjacent to the focal track material (4). The extremely fast rotation is enabled by providing sections of the rotary anode disk made of anisotropic high specific strength materials with high thermal stability (1, 3, 6) which will be specifically adapted to the high stresses building up when the anode is operated, as for example fiber-reinforced ceramic materials. An X-ray system equipped with a high peak power anode according to the present invention will be capable of high speed image acquisition with high resolution and high coverage. Such a high-speed rotary anode disk can advantageously be applied in X-ray tubes for material inspection or medical radiography, for X-ray imaging applications which are needed for acquiring image data of moving objects in real-time, such as e.g. in the scope of cardiac CT, or for any other X-ray imaging application that requires high-speed image data acquisition. According to a further exemplary embodiment, the invention is directed to a rotary anode disk divided into distinct anode segments (10a, 10b) with adjacent anode segments which may e.g. be limited to each other by straight radial (14a) or S- shaped slits (14b) ranging from the inner anode bulk (1) to the inner radial edge of the anode disk's outer frame section (3). Other exemplary embodiments of the present invention relate to a rotary anode disk structure design which comprises liquid metal conductors (16a) between the inner anode bulk (1) and a rotary shaft (12) needed for rotating the rotary anode disk about its rotational axis (5), said liquid metal conductors (16a) providing a liquid metal connection between the rotary anode and its rotary shaft (12), or to a rotary anode disk structure which comprises a sliding radial connection (17) and a flexible heat conductor (18) between the inner anode bulk (1) and the rotary shaft (12).

摘要翻译：本发明涉及高功率X射线源，尤其涉及那些配备旋转X射线阳极的旋转X射线阳极，该旋转X射线阳极能够提供比根据现有技术的传统旋转X射线阳极高得多的短时间峰值功率。由此提出的设计原则旨在通过允许阳极的极快速旋转并且通过在与焦轨材料（4）相邻的区域中引入具有高导热率的轻质材料（2）来克服峰值功率的热限制。通过提供由具有高热稳定性的各向异性高比强度材料（1,3,6）制成的旋转阳极盘的部分能够实现极快的旋转，所述高热稳定性特别适用于阳极操作时形成的高应力，例如纤维增强陶瓷材料。配备有根据本发明的高峰值功率阳极的X射线系统将能够以高分辨率和高覆盖率进行高速图像采集。这种高速旋转阳极盘可以有利地应用于用于材料检查或医学射线照相的X射线管中，用于实时获取运动物体的图像数据所需的X射线成像应用，例如，在心脏CT的范围内，或用于需要高速图像数据采集的任何其他X射线成像应用。根据另一个示例性实施例，本发明涉及一种旋转阳极盘，其被分成具有相邻阳极段的不同阳极段（10a，10b），所述相邻阳极段可以例如通过从内阳极体（1）到阳极盘外框部分（3）的内径向边缘的直径径向（14a）或S形狭缝（14b）彼此限制。本发明的其它示例性实施例涉及一种旋转阳极盘结构设计，其包括在内部阳极体（1）和旋转阳极盘围绕其旋转轴旋转所需的旋转轴（12）之间的液体金属导体（16a）所述液态金属导体（16a）在旋转阳极与其旋转轴（12）之间提供液态金属连接，或者与包括滑动径向连接（17）和柔性热导体（18）的旋转阳极盘结构）在内部阳极体（1）和旋转轴（12）之间。

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