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    • 71. 发明申请
    • Dual fluid cooling system for high power x-ray tubes
    • 双流体冷却系统,用于大功率X射线管
    • US20020146092A1
    • 2002-10-10
    • US09829353
    • 2001-04-09
    • Varian Medical Systems, Inc.
    • John E. RichardsonGregory C. AndrewsRobert S. MillerAllen C. Campbell
    • H01J035/10
    • H01J35/106H01J2235/1204H01J2235/1275H01J2235/1283H01J2235/1287H05G1/025H05G1/04
    • A cooling system for use with high-power x-ray tubes. The cooling system includes a dielectric coolant disposed in the x-ray tube housing so as to absorb heat dissipated by the stator and other electrical components, as well as absorbing some heat from the x-ray tube itself. To improve heat absorption from the stator and the x-ray tube, the dielectric coolant is circulated throughout the housing by a circulating pump. The cooling system also includes a coolant circuit employing a pressurized water/glycol solution as a coolant. Pressurization of the water/glycol solution is achieved by way of an accumulator which, by pressurizing the coolant to a desired level, raises its boiling point and capacity to absorb heat. A coolant pump circulates the pressurized coolant through a fluid passageway defined in an aperture of the x-ray tube and through a target cooling block disposed proximate to the x-ray tube in the x-ray tube housing, so as to position the coolant to absorb some of the heat generated at the aperture by secondary electrons, and the heat generated in the target cooling block by the target anode of the x-ray tube. The target cooling block is in contact with the dielectric fluid so that some of the heat absorbed by the dielectric coolant is transferred to the coolant flowing through the target cooling block. The heated coolant is then passed through an air/water radiator where a flow of air serves to remove some heat from the coolant. Thus cooled, the coolant then exits the radiator to repeat the cycle.
    • 用于大功率x射线管的冷却系统。 冷却系统包括设置在x射线管壳体中的介电冷却剂,以便吸收由定子和其它电气部件散发的热量,以及从X射线管本身吸收一些热量。 为了改善来自定子和x射线管的热吸收,电介质冷却剂通过循环泵在整个壳体内循环。 冷却系统还包括使用加压水/乙二醇溶液作为冷却剂的冷却剂回路。 水/乙二醇溶液的加压通过储液器实现,储液器通过将冷却剂加压至所需水平,提高其沸点和吸收热量的能力。 冷却剂泵将加压的冷却剂循环通过限定在x射线管的孔中的流体通道并且通过靠近x射线管外壳中的x射线管设置的目标冷却块,以将冷却剂定位到 通过二次电子吸收在孔径处产生的一些热量,以及由X射线管的目标阳极在目标冷却块中产生的热量。 目标冷却块与电介质流体接触,使得由电介质冷却剂吸收的一些热量被传递到流过目标冷却块的冷却剂。 然后,加热的冷却剂通过空气/水散热器,其中空气流用于从冷却剂中去除一些热量。 如此冷却,冷却剂然后离开散热器重复循环。
    • 79. 发明公开
    • X-RAY GENERATOR WITH ADJUSTABLE COLLIMATION
    • RÖNTGENSTRAHLGENERATORMIT EINSTELLBARER KOLLIMATION
    • EP2953136A1
    • 2015-12-09
    • EP15170759.3
    • 2015-06-05
    • Nuctech Company LimitedTsinghua University
    • DING, FuhuaCHEN, ZhiqiangZHAO, ZiranWU, WanlongTANG, LeJIN, YingkangWEN, Yanjie
    • G21K1/02G21K1/04
    • H01J35/12G21K1/043G21K1/046H01J2235/1287H05G1/12
    • The present disclosure provides an X-ray generator with adjustable collimation. The X-ray generator comprises: an assembly of X-ray source, which includes an X-ray tube (203) having a cathode and an anode and a front collimator (302); a high voltage generator (100), which is disposed in an extended chamber of a housing for the X-ray tube and which is used for supplying a direct current high voltage between the cathode and the anode of the X-ray tube to excite X-ray beams; a collimation adjustment unit (301), which is rotatably disposed outside of the front collimator and which is used for adjusting fan-type X-ray beams into continuous pencil-type X-ray beams; and a cooling unit (401, 402, 403), which is independently mounted to the X-ray tube and which is used for cooling the anode of the X-ray tube; wherein, the assembly of X-ray source, the high voltage generator, the collimation adjustment unit and the cooling unit are integrated as a whole. The X-ray generator with adjustable collimation according to the disclosure has a compact construction, which is helpful in miniaturization, modularization and high efficiency of a security detection equipment.
    • 本公开提供了具有可调准直的X射线发生器。 X射线发生器包括:X射线源的组件,其包括具有阴极和阳极的X射线管(203)和前准直器(302); 高压发生器(100),其设置在用于X射线管的壳体的延伸室中,并用于在X射线管的阴极和阳极之间提供直流高电压以激发X 射线束 准直调整单元,其可旋转地设置在前准直仪的外侧,用于将风扇型X射线束调整为连续的铅笔型X射线束; 以及独立地安装到所述X射线管并用于冷却所述X射线管的阳极的冷却单元(401,402,403)。 其中,X射线源,高压发生器,准直调节单元和冷却单元的组合整体集成。 根据本公开的具有可调准直的X射线发生器具有紧凑的结构,其有助于安全检测设备的小型化,模块化和高效率。