CN105405731B - 一种采用金属‑陶瓷封接的ct球管 - Google Patents

一种采用金属‑陶瓷封接的ct球管 Download PDF

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CN105405731B
CN105405731B CN201510882764.2A CN201510882764A CN105405731B CN 105405731 B CN105405731 B CN 105405731B CN 201510882764 A CN201510882764 A CN 201510882764A CN 105405731 B CN105405731 B CN 105405731B
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CN105405731A (zh
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盛兴
王瑞海
王宁红
寇建勇
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Cetc Ruishi Technology Beijing Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00X-ray tubes
    • H01J35/24Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H01J35/26Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by rotation of the anode or anticathode
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03Computed tomography [CT]
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/021Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles in a direct manner, e.g. direct copper bonding [DCB]

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Abstract

本发明公开了一种采用金属‑陶瓷封接的CT球管,属于真空电子医疗器件领域。所述CT球管主要包括管壳,连接于所述管壳内的旋转阳极靶以及位于所述管壳内且与所述旋转阳极靶位置相对应的阴极;其中,旋转阳极靶通过轴承与管壳连接;所述管壳包括陶瓷段和金属段;陶瓷段主要起绝缘作用,分为阴极陶瓷段和阳极陶瓷段;阴极陶瓷段为带中心孔的圆柱形结构,其两端分别加工有环形凹槽,位于金属段内的一端环形凹槽的槽深小于位于金属段外的一端环形凹槽的槽深,且位于金属段外一端环形凹槽内侧的端面低于外侧的端面。所述CT球管采用金属‑陶瓷封接,相较于金属‑玻璃封接更牢固,气密性更好,并且与玻璃相比,氧化铝陶瓷的导热率高,承温高,吸热好。

Description

一种采用金属-陶瓷封接的CT球管
技术领域
本发明涉及一种采用金属-陶瓷封接的CT球管,属于真空电子医疗器件领域。
背景技术
CT机是医院普遍采用的病情探测仪器,CT机分辨能力高、诊断效果形象直观准确。CT球管,又称为X射线管,是CT机的核心部件,为整个CT设备提供X射线源。只有当CT球管提供稳定可靠的X射线时,CT机的一切功能才能得以实现。CT球管主要由外壳、阴极、阳极、轴承转子、高压系统等几部分组成。CT球管工作时,阴极灯丝通电发热,逸出电子,电子在强大电场力的作用下加速运动,轰击球管的旋转靶面,发生韧致辐射,从而产生X射线。
目前,CT球管的外壳封接多采用金属-玻璃封接,玻璃作为电极的绝缘部分,具有易加工成型的特点,但是容易炸裂。
发明内容
有鉴于此,本发明的目的在于提供一种采用金属-陶瓷封接的CT球管,所述CT球管采用金属-陶瓷封接,相较于金属-玻璃封接更牢固,气密性更好,并且与玻璃相比,氧化铝陶瓷的导热率更高,承温高,吸热更好。
本发明的目的由以下技术方案实现:
一种采用金属-陶瓷封接的CT球管,所述CT球管主要包括管壳,连接于所述管壳内的旋转阳极靶以及位于所述管壳内且与所述旋转阳极靶位置相对应的阴极;其中,旋转阳极靶通过轴承与管壳连接;
所述管壳包括陶瓷段和金属段,其中,陶瓷段主要起绝缘作用,分为阴极陶瓷段和阳极陶瓷段;所述阴极陶瓷段为带中心孔的圆柱形结构,其两端分别加工有环形凹槽,位于金属段内的一端环形凹槽的槽深小于位于金属段外的一端环形凹槽的槽深,且位于金属段外一端环形凹槽内侧的端面低于外侧的端面。
进一步的,所述陶瓷段的构成材料为氧化铝陶瓷。
进一步的,所述氧化铝陶瓷为电子工业陶瓷,其纯度为95%。
进一步的,所述阴极陶瓷段为S型。
有益效果
(1)本发明所述CT球管的管壳包括陶瓷段和金属段,与玻璃相比,选用陶瓷的导热率更高,承温高,吸热更好,因此,相较于金属-玻璃封接,金属-陶瓷封接更牢固,气密性更好,且陶瓷段不易炸裂。
(2)本发明所述CT球管可靠性高;因为当两端电压较高时,陶瓷表面容易形成爬流,所述CT球管中阴极陶瓷段两端加工有槽深不同的环形凹槽,且远离旋转阳极靶一端环形凹槽内侧的端面低于外侧的端面,这样减小陶瓷被高压击穿的可能性,进而提高了CT球管的可靠性。
附图说明
图1为本发明所述CT球管的结构示意图;
其中,1-金属段,2-阴极陶瓷段,3-阳极陶瓷段,4-旋转阳极靶,5-阴极,6-轴承。
具体实施方式
下面结合附图和具体实施例来详述本发明,但不限于此。
实施例1
一种采用金属-陶瓷封接的CT球管,所述CT球管的结构示意图如图1所示,其主要包括管壳,连接于所述管壳内的旋转阳极靶4以及位于所述管壳内且与所述旋转阳极靶4位置相对应的阴极5;其中,旋转阳极靶4通过轴承6与管壳连接;所述管壳包括陶瓷段和金属段1,其中,陶瓷段主要起绝缘作用,分为阴极陶瓷段2和阳极陶瓷段3;所述阴极陶瓷段2为带中心孔的圆柱形结构,其两端分别加工有环形凹槽,位于金属段1内的一端环形凹槽的槽深小于位于金属段1外的一端环形凹槽的槽深,且位于金属段1外一端环形凹槽内侧的端面低于外侧的端面。
进一步的,所述陶瓷段的构成材料为氧化铝陶瓷。
进一步的,所述氧化铝陶瓷为电子工业陶瓷,其纯度为95%。
本发明包括但不限于以上实施例,凡是在本发明精神的原则之下进行的任何等同替换或局部改进,都将视为在本发明的保护范围之内。

Claims (4)

1.一种采用金属-陶瓷封接的CT球管,所述CT球管主要包括管壳,连接于所述管壳内的旋转阳极靶(4)以及位于所述管壳内且与所述旋转阳极靶(4)位置相对应的阴极(5);其中,旋转阳极靶(4)通过轴承(6)与管壳连接;其特征在于:所述管壳包括陶瓷段和金属段(1),其中,陶瓷段主要起绝缘作用,分为阴极陶瓷段(2)和阳极陶瓷段(3);所述阴极陶瓷段(2)为带中心孔的圆柱形结构,其两端分别加工有环形凹槽,位于金属段(1)内的一端环形凹槽的槽深小于位于金属段(1)外的一端环形凹槽的槽深,且位于金属段(1)外一端环形凹槽内侧的端面低于外侧的端面。
2.根据权利要求1所述的一种采用金属-陶瓷封接的CT球管,其特征在于:所述陶瓷段的构成材料为氧化铝陶瓷。
3.根据权利要求2所述的一种采用金属-陶瓷封接的CT球管,其特征在于:所述氧化铝陶瓷为电子工业陶瓷,其纯度为95%。
4.根据权利要求1所述的一种采用金属-陶瓷封接的CT球管,其特征在于:所述阴极陶瓷段(2)为S型。
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CN109148240B (zh) * 2018-07-06 2020-05-01 健康力(北京)医疗科技有限公司 用于ct球管的金属陶瓷管壳及其制备方法
CN109887821B (zh) * 2018-09-28 2021-06-04 胡逸民 双靶面阳极x射线球管

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956653A (en) * 1975-02-03 1976-05-11 Litton Industrial Products, Inc. Rotating anode X-ray tube
CN2098736U (zh) * 1991-06-07 1992-03-11 刘振琴 X-射线管
CN1501760A (zh) * 2002-11-14 2004-06-02 Ge医药系统环球科技公司 用于单极ct管的hv系统
CN201673886U (zh) * 2010-04-30 2010-12-15 珠海瑞能真空电子有限公司 外转子结构的ct球管
CN202434460U (zh) * 2011-12-21 2012-09-12 王建军 环保型ct金属x线管
CN204696072U (zh) * 2015-06-04 2015-10-07 珠海瑞能真空电子有限公司 一种新型陶瓷阴极x射线管
JP2015201298A (ja) * 2014-04-07 2015-11-12 株式会社東芝 X線管

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3956653A (en) * 1975-02-03 1976-05-11 Litton Industrial Products, Inc. Rotating anode X-ray tube
CN2098736U (zh) * 1991-06-07 1992-03-11 刘振琴 X-射线管
CN1501760A (zh) * 2002-11-14 2004-06-02 Ge医药系统环球科技公司 用于单极ct管的hv系统
CN201673886U (zh) * 2010-04-30 2010-12-15 珠海瑞能真空电子有限公司 外转子结构的ct球管
CN202434460U (zh) * 2011-12-21 2012-09-12 王建军 环保型ct金属x线管
JP2015201298A (ja) * 2014-04-07 2015-11-12 株式会社東芝 X線管
CN204696072U (zh) * 2015-06-04 2015-10-07 珠海瑞能真空电子有限公司 一种新型陶瓷阴极x射线管

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