WO2012019470A1 - 高功率脉冲线性假负载 - Google Patents

高功率脉冲线性假负载 Download PDF

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Publication number
WO2012019470A1
WO2012019470A1 PCT/CN2011/073854 CN2011073854W WO2012019470A1 WO 2012019470 A1 WO2012019470 A1 WO 2012019470A1 CN 2011073854 W CN2011073854 W CN 2011073854W WO 2012019470 A1 WO2012019470 A1 WO 2012019470A1
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WIPO (PCT)
Prior art keywords
dummy load
high power
linear dummy
insulating frame
resistance band
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PCT/CN2011/073854
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English (en)
French (fr)
Inventor
何正浩
许宇航
张召亮
刘俊翔
朱璐
吴昊
Original Assignee
华中科技大学
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Publication of WO2012019470A1 publication Critical patent/WO2012019470A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
    • H01C3/02—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids arranged or constructed for reducing self-induction, capacitance or variation with frequency

Definitions

  • the present invention relates to the field of high power pulse technology, and more particularly to a high power pulse linear dummy load.
  • Pulse power technology is a new subject that has developed rapidly in recent decades. Early nuclear fusion research has created a growth environment for it. The demand for basic research in defense provides a driving force for development. The rapid emergence of various industrial applications in recent years has gradually matured. Today, pulsed power technology is widely used in energy, military, environmental, materials, medical, and biological applications.
  • a pure resistive dummy load is often required to simulate a real load.
  • resistive loads there are the following types: ceramic linear resistors, electrolyte solutions (or water loads), and wire resistors.
  • These conventional load designs are typically used in low power or test conditions operating under short pulse conditions, but for the performance testing or testing of electrical equipment operating at high power and operating under long pulse conditions, if ceramic linear resistors are used or Ordinary wire resistance, which will cause the load resistance caused by excessive temperature rise to cause damage or even explosion.
  • water load the stability is even worse, and may even cause the electrolyte solution to boil. Therefore, an improved high power pulsed linear dummy load is urgently needed to overcome the above drawbacks.
  • the technical problem to be solved by the present invention is to provide a high-power pulse linear dummy load with simple structure, good heat dissipation performance and low cost.
  • the present invention provides a high power pulse linear dummy load including a resistance band, an outlet connector connected at both ends of the resistance band, and an insulating frame fixing the resistance band, the resistance band being composed of a plurality of The curved section and the plurality of straight sections are alternately connected, and the straight sections are disposed in parallel in the insulating frame at an interval, and the outgoing joint protrudes from the insulating frame.
  • the resistance band of the high power pulse linear dummy load of the present invention is formed by alternately connecting a plurality of curved segments and a plurality of straight segments, since the surface area of the resistance band itself is large and the straight segments of the resistance band are A certain interval is set in parallel.
  • a pulse of high energy and large current is applied to the dummy load, energy is converted into heat energy through the resistance band, and the heat energy is passed through the electricity.
  • the gap between the surface of the stop band and the resistance band is dissipated, and the heat dissipation effect is good.
  • the straight sections of the resistance strip are arranged in parallel at a certain interval, this structure can ensure that the self-inductance of the dummy load itself is small, and thus the actual load can be accurately simulated.
  • the high power pulsed linear dummy load of the present invention is simple in structure, low in cost, and suitable for wide application.
  • the insulating frame includes a front partition, a rear partition, a pair of splints connecting the front partition and the rear partition, and a middle partition, the middle partition being parallel Provided between the front baffle and the rear baffle and fixed on the splint, each of the middle baffles is spaced apart from a plurality of notches corresponding to the thickness of the electric resistance strip, the front partition Two holes are provided in the plate for the outlet connector to protrude. Fixing the resistance band through the notch on the middle partition ensures that it does not deform due to the large point power during operation.
  • the structure can increase the heat dissipation space and further improve the heat dissipation performance.
  • the notches of the adjacent two of the partitions are disposed opposite to each other to more firmly fix the resistance band.
  • connection between the resistance band and the outlet connector is fixed in the hole by epoxy casting to ensure the strength of the connection between the resistance band and the outlet connector.
  • the front baffle, the middle baffle and the rear baffle are fixed between the pair of splints by an epoxy insulated wire column to ensure the firm structure of the insulating frame and easy to disassemble.
  • the front, middle and rear partitions are secured between a pair of jaws by an epoxy insulated wire string.
  • the insulating frame is made of an epoxy material to ensure the overall bearing capacity of the insulating frame.
  • the resistor tape is made of an iron-chromium-aluminum flat ribbon (0O25A15), and the resistor tape made of the material is heat-resistant, has a high use temperature, is resistant to oxidation, has a high surface load, and has a high electrical resistivity.
  • the outlet connector is made of brass.
  • FIG. 1 is a schematic structural view of an embodiment of a high power pulsed linear dummy load of the present invention.
  • Figure 2 is a side elevational view of the high power pulsed linear dummy load of Figure 1.
  • Figure 3a is a front elevational view of the intermediate partition of the high power pulsed linear dummy load of Figure 1.
  • Figure 3b is a side elevational view of the baffle shown in Figure 3a.
  • FIG. 4a is a schematic structural view of a front spacer of the high power pulse linear dummy load shown in FIG. 1.
  • Figure 4b is a side elevational view of the front bulkhead of Figure 4a.
  • Figure 5a is a schematic view showing the structure of the rear partition of the high power pulse linear dummy load shown in Figure 1.
  • Figure 5b is a side elevational view of the rear bulkhead of Figure 5a.
  • Fig. 6 is a structural schematic view of the splint of the high power pulse linear dummy load shown in Fig. 1.
  • Figure 7 is a schematic view showing the structure of the outlet connector of the high power pulse linear dummy load shown in Figure 1.
  • the present invention provides a high power pulse linear dummy load having a simple structure, good heat dissipation performance, and low cost.
  • the high power pulse linear dummy load of the embodiment includes a resistance band 1, an outlet connector 2 connected to both ends of the resistance band 1, and an insulating frame 3 fixing the resistance band 1, the resistor
  • the belt 1 is formed by alternately connecting a plurality of curved sections 1a and lbs, and the straight sections lb are disposed in parallel in the insulating frame 3 at an interval, and the outlet joint 2 protrudes from the insulation Frame 3. That is, the electric resistance belt 1 is bent and bent to the same side by a flat belt, and is disposed in parallel in the insulating casing 3 at regular intervals.
  • the outlet connector 2 extends out of the insulating frame 3.
  • the resistance band 1 can be made of an iron-chromium-aluminum flat ribbon, and the resistance value and the cross-sectional dimension of the resistance band 1 can be selected according to the required resistance and the current that may pass;
  • the insulating frame 3 can be Made of an epoxy material;
  • the wire joint 2 can be made of brass.
  • the insulating frame 3 includes a front partition 31, a rear partition 32, a pair of clamping plates 33 connecting the front partition 31 and the rear partition 32, and a middle partition 34, the middle partition
  • the plate 34 is disposed in parallel between the front partition plate 31 and the rear partition plate 32 and is fixed to the clamp plate 33.
  • a plurality of mounting holes 33a are formed in the splint 33 corresponding to the front partition plate 31, the rear partition plate 32, and the intermediate partition plate 33.
  • the front partition plate 31 is provided with two holes 31a for extending the wire joint 2, and the two wire joints 2 are respectively located on both sides of the front partition plate 31 and adjacent to the plate. 33.
  • the front partition plate 31 is further provided with a plurality of positioning holes 31b.
  • the front partition plate 31 and the clamping plate 33 can be fixed by the studs passing through the positioning holes 31b and the corresponding mounting holes 33a of the clamping plate 33. together.
  • each of the middle partitions 34 is spaced apart from a plurality of notches 34a corresponding to the thickness of the resistance strip 1, and a positioning hole 34b through which the stud passes is opened. , the stud passes through the positioning hole 34b and the clamping plate 33
  • the intermediate partition 34 can be secured between the jaws 33 by corresponding mounting holes 33a.
  • the notches 34a of the adjacent two intermediate partitions 34 are disposed opposite each other to more stably secure the resistive strip 1.
  • the rear partition 32 is also provided with a positioning hole 32a through which the stud can pass through the positioning hole 32a and the corresponding mounting hole 33a of the clamping plate 33.
  • the splints 33 are fixed together.
  • the front bulkhead 31, the middle bulkhead 34 and the rear bulkhead 32 may be secured between a pair of jaws 33 by an epoxy insulated wire string.
  • the outlet connector 2 is provided with a wiring hole 2a, which can be sized as needed to facilitate use.
  • the resistance band 1 is bent and formed in the notch 34a, and the outlet interface 2 passes through the hole 31a of the front partition 31, so that the resistance band 1 is stably fixed on the insulating frame 3,
  • a large current passes, mutually repulsive electric power is generated between the straight sections of the resistance band, and this structure can ensure that the resistance band 1 does not deform under the action of the point power, thereby avoiding the short circuit.
  • the connection between the resistance band 1 and the outlet connector 2 is fixed in the hole 31a by epoxy casting to ensure the strength of the connection between the resistance tape 1 and the outlet connector 2.
  • the surface area of the resistance band itself is large and the straight sections of the resistance band are disposed at intervals, when a pulse of high energy and large current is applied to the dummy load, energy is converted into heat energy through the resistance band, and thermal energy passes through the surface of the resistance band and The gap between the straight segments is dissipated, and the heat dissipation effect is good.
  • the straight sections of the resistance strip are arranged in parallel at a certain interval, this structure can ensure that the self-inductance of the dummy load itself is small, and thus the actual load can be accurately simulated.
  • the high power pulsed linear dummy load of the present invention has a simple structure and is inexpensive to manufacture.
  • the high-power pulse linear dummy load of the invention is suitable for pulse power test of continuous operation under high power and high current conditions, and can also be used for performance test of electrical equipment, equipment maintenance and the like.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Resistors (AREA)
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Description

髙功率脉冲线性假负载 技术领域
本发明涉及高功率脉冲技术领域， 尤其涉及一种高功率脉冲线性假负载。
背景技术
脉冲功率技术是近几十年内迅速发展起来的一门新兴学科。 早期的核聚变研究给它 创造了成长的环境， 国防基础科研的需求为它提供了发展的动力， 近年来快速出现的各 种工业应用使它逐步趋于成熟。 如今， 脉冲功率技术已被广泛应用于能源、 军工、环境、 材料、 医疗和生物等领域。
为了进行脉冲功率相关的科研试验， 常常需要纯阻性假负载来模拟真实负载。对于 现有的电阻负载， 常规的种类有以下几种： 陶瓷线性电阻、 电解质溶液 (或称水负载）、 以及金属丝电阻。 这几种常规负载设计通常在小功率或工作在短脉冲条件下的试验情况 中应用， 但是对于大功率、 且工作在长脉冲条件下的电气设备的性能测试或试验， 如果 采用陶瓷线性电阻或者普通金属丝电阻， 会造成温升过大引起的负载电阻发热以至引起 损坏甚至爆炸等问题； 而采用水负载时， 稳定性更差， 甚至可能会造成电解质溶液沸腾。 因此， 亟待提供一种改进的高功率脉冲线性假负载以克服上述缺陷。
发明内容
本发明要解决的技术问题在于提供一种结构简单、散热性能好且造价低廉的高功率 脉冲线性假负载。
为了解决上述技术问题，本发明提供了一种高功率脉冲线性假负载，其包括电阻带、 连接在电阻带两端的出线接头以及固定所述电阻带的绝缘框体， 所述电阻带由多个弯曲 段和多个平直段交替连接而成， 所述平直段以一定间隔平行设置于所述绝缘框体内， 所 述出线接头伸出所述绝缘框体。
与现有技术相比， 本发明的高功率脉冲线性假负载的电阻带由多个弯曲段和多个平 直段交替连接而成，由于电阻带本身的表面积大且电阻带的平直段以一定间隔平行设置， 当高能量大电流的脉冲施加在该假负载上时， 能量通过电阻带转化为热能， 热能通过电 阻带表面以及电阻带之间的空隙散去， 散热效果好。 此外， 由于电阻带的平直段以一定 间隔平行设置， 这种结构可以保证假负载本身的自感很小， 进而可以准确模拟真实负载 的使用。 此外， 本发明的高功率脉冲线性假负载结构简单， 造价低廉， 适于广泛应用。
作为本发明的优选实施例， 所述绝缘框体包括前隔板、 后隔板、 连接所述前隔板和 所述后隔板的一对夹板、 以及中隔板， 所述中隔板平行设置于所述前隔板和后隔板之间 且固定在所述夹板上， 每个所述中隔板上间隔设置有多个与所述电阻带的厚度相应的槽 口， 所述前隔板上开设有两个供所述出线接头伸出的孔。 通过中隔板上的槽口固定所述 电阻带， 可以保证其在工作时， 不会因为巨大的点动力而发生形变。 此外， 该结构可以 增大散热空间， 进一步提高散热性能。
优选地， 相邻两中隔板的槽口相向设置， 以更加稳固地固定所述电阻带。
优选地， 所述电阻带与所述出线接头的连接处通过环氧浇注固定在所述孔内， 保证 电阻带与出线接头连接处强度。
优选地， 所述前隔板、 中隔板和后隔板通过环氧绝缘丝柱固定在一对夹板之间， 以 保证绝缘框体整体结构的牢固且易于拆装。
较佳地， 所述前隔板、 中隔板和后隔板通过环氧绝缘丝柱固定在一对夹板之间。 较佳地， 所述绝缘框体由环氧材料制成， 以保证绝缘框体的整体承受力能力。 所述 电阻带由铁铬铝扁带 （0O25A15 ) 制成， 由该材料制成的电阻带耐热、 使用温度高、 抗 氧化、 表面负荷高且电阻率高。 所述出线接头由黄铜制成。
通过以下的描述并结合附图， 本发明将变得更加清晰， 这些附图用于解释本发明的 实施例。
附图说明
图 1为本发明高功率脉冲线性假负载的一个实施例的结构示意图。
图 2为图 1所示高功率脉冲线性假负载的侧视图。
图 3a为图 1所示高功率脉冲线性假负载的中隔板的主视图。
图 3b为图 3a所示中隔板的侧视图。
图 4a为图 1所示高功率脉冲线性假负载的前隔板的结构示意图。 图 4b为图 4a所示前隔板的侧视图。
图 5a为图 1所示高功率脉冲线性假负载的后隔板的结构示意图。
图 5b为图 5a所示后隔板的侧视图。
图 6为图 1所示高功率脉冲线性假负载的夹板的结构示意图。
图 7为图 1所示高功率脉冲线性假负载的出线接头的结构示意图。
具体实施方式
现在参考附图描述本发明的实施例， 附图中类似的元件标号代表类似的元件。如上 所述， 本发明提供了一种结构简单、 散热性能好且造价低廉的高功率脉冲线性假负载。
下面将结合附图详细阐述本发明实施例的技术方案。如图 1和图 2所示， 本实施例 的高功率脉冲线性假负载包括电阻带 1、 连接在电阻带 1两端的出线接头 2以及固定所 述电阻带 1的绝缘框体 3， 所述电阻带 1由多个弯曲段 la和多个平直段 lb交替连接而 成，所述平直段 lb以一定间隔平行设置于所述绝缘框体 3内，所述出线接头 2伸出所述 绝缘框体 3。 也就是说， 所述电阻带 1是由一根扁带向同侧回转弯曲后以一定间隔平行 设置于所述绝缘框体 3内。所述出线接头 2伸出所述绝缘框体 3。具体地， 所述电阻带 1 可以由铁铬铝扁带制成， 电阻带 1的阻值和截面尺寸可以根据所需的电阻以及可能通过 的电流大小来进行选择； 所述绝缘框体 3可以由环氧材料制成； 所述出线接头 2可以由 黄铜制成。
具体地， 所述绝缘框体 3包括前隔板 31、 后隔板 32、 连接所述前隔板 31和所述后 隔板 32的一对夹板 33、 以及中隔板 34， 所述中隔板 34平行设置于所述前隔板 31和后 隔板 32之间且固定在所述夹板 33上。 如图 6所示， 所述夹板 33上对应所述前隔板 31、 后隔板 32和中隔板 33开设有多个安装孔 33a。 如图 3a_3b所示， 所述前隔板 31上开设 有两个供所述出线接头 2伸出的孔 31a，这两个出线接头 2分别位于所述前隔板 31两侧 且靠近所述夹板 33。所述前隔板 31上还设有多个定位孔 31b， 螺柱穿过所述定位孔 31b 以及夹板 33上相应的安装孔 33a即可将所述前隔板 31和所述夹板 33固定在一起。如图 4a-4b所示， 每个所述中隔板 34上间隔设置有多个与所述电阻带 1 的厚度相应的槽口 34a, 且其上开设有供螺柱穿过的定位孔 34b， 螺柱穿过所述定位孔 34b以及夹板 33上 相应的安装孔 33a即可将所述中隔板 34固定在所述夹板 33之间。 再次参考图 1， 相邻 两中隔板 34的槽口 34a相向设置， 以更加稳固地固定所述电阻带 1。 如图 5a_5b所示， 所述后隔板 32上也设有定位孔 32a， 螺柱穿过所述定位孔 32a以及夹板 33上相应的安 装孔 33a即可将所述后隔板 32和所述夹板 33固定在一起。 所述前隔板 31、 中隔板 34 和后隔板 32可以通过环氧绝缘丝柱固定在一对夹板 33之间。 如图 7所示， 所述出线接 头 2上设有接线孔 2a， 可以根据需要设定其大小， 以便于使用。
所述电阻带 1弯曲成形后卡设在所述槽口 34a中， 出线接口 2穿过所述前隔板 31 上的孔 31a， 这样， 电阻带 1稳定固定在所述绝缘框体 3上， 当大电流通过时， 电阻带 的平直段之间会产生相互排斥的电动力， 这种结构可以保证电阻带 1在点动力的作用下 不发生形变， 进而避免短路。 进一步地， 所述电阻带 1与所述出线接头 2的连接处通过 环氧浇注固定在所述孔 31a内， 以保证电阻带 1与出线接头 2连接处强度。
由于电阻带本身的表面积大且电阻带的平直段以一定间隔设置，当高能量大电流的 脉冲施加在该假负载上时， 能量通过所述电阻带转化为热能， 热能通过电阻带表面以及 平直段之间的空隙散去， 散热效果好。此外， 由于电阻带的平直段以一定间隔平行设置， 这种结构可以保证假负载本身的自感很小， 进而可以准确模拟真实负载的使用。 此外， 本发明的高功率脉冲线性假负载结构简单， 造价低廉。 本发明的高功率脉冲线性假负载 适用于高功率、 大电流情况下连续工作的脉冲功率试验， 也可以用于电器设备的性能测 试、 设备检修等领域。

Claims

权 利 要 求 书
1. 一种高功率脉冲线性假负载， 其特征在于： 包括电阻带、连接在电阻带两端的出 线接头以及固定所述电阻带的绝缘框体， 所述电阻带由多个弯曲段和多个平直段交替连 接而成， 所述平直段以一定间隔平行设置于所述绝缘框体内， 所述出线接头伸出所述绝 缘框体。
2. 根据权利要求 1所述的高功率脉冲线性假负载，其特征在于：所述绝缘框体包括 前隔板、 后隔板、 连接所述前隔板和所述后隔板的一对夹板、 以及中隔板， 所述中隔板 平行设置于所述前隔板和后隔板之间且固定在所述夹板上， 每个所述中隔板上间隔设置 有多个与所述电阻带的厚度相应的槽口， 所述前隔板上开设有两个供所述出线接头伸出 的孔。
3. 根据权利要求 2所述的高功率脉冲线性假负载，其特征在于：所述电阻带与所述 出线接头的连接处通过环氧浇注固定在所述孔内。
4. 根据权利要求 2所述的高功率脉冲线性假负载， 其特征在于： 所述前隔板、 中隔 板和后隔板通过环氧绝缘丝柱固定在一对夹板之间。
5. 根据权利要求 2所述的高功率脉冲线性假负载，其特征在于：相邻两中隔板的槽 口相向设置。
6. 根据权利要求 1-5任一项所述的高功率脉冲线性假负载，其特征在于：所述出线 接头上设有接线孔。
7. 根据权利要求 1-5任一项所述的高功率脉冲线性假负载，其特征在于：所述绝缘 框体由环氧材料制成。
8. 根据权利要求 1-5任一项所述的高功率脉冲线性假负载，其特征在于：所述电阻 带由铁铬铝扁带制成。
9. 根据权利要求 1-5任一项所述的高功率脉冲线性假负载，其特征在于：所述出线 接头由黄铜制成。
PCT/CN2011/073854 2010-08-09 2011-05-10 高功率脉冲线性假负载 WO2012019470A1 (zh)

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CN101944414B (zh) * 2010-08-09 2012-10-10 华中科技大学 高功率脉冲线性假负载
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CN105934008B (zh) * 2016-07-11 2022-12-06 季国民 高低压电热模块

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EP0101623A1 (de) * 1982-08-17 1984-02-29 BBC Brown Boveri AG Halterungsvorrichtung für eine mäanderförmige Wicklung und Verwendung dieser Halterungsvorrichtung
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