WO2014090103A1 - 一种防腐蚀水冷阻尼电阻丝体 - Google Patents

一种防腐蚀水冷阻尼电阻丝体 Download PDF

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Publication number
WO2014090103A1
WO2014090103A1 PCT/CN2013/088525 CN2013088525W WO2014090103A1 WO 2014090103 A1 WO2014090103 A1 WO 2014090103A1 CN 2013088525 W CN2013088525 W CN 2013088525W WO 2014090103 A1 WO2014090103 A1 WO 2014090103A1
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Prior art keywords
corrosion
resistance wire
resistant
water
resistor
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Ceased
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PCT/CN2013/088525
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English (en)
French (fr)
Inventor
汤广福
徐承申
高冲
周万迪
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XI'AN WITT ELECTRIC EQUIPMENT Co Ltd
State Grid Smart Grid Research Institute of SGCC
State Grid Corp of China SGCC
C Epri Electric Power Engineering Co Ltd
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XI'AN WITT ELECTRIC EQUIPMENT Co Ltd
State Grid Smart Grid Research Institute of SGCC
State Grid Corp of China SGCC
C Epri Electric Power Engineering Co Ltd
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Publication of WO2014090103A1 publication Critical patent/WO2014090103A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/024—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being hermetically sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/08—Cooling, heating or ventilating arrangements
    • H01C1/082—Cooling, heating or ventilating arrangements using forced fluid flow
    • 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
    • H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
    • H01C3/20—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on cylindrical or prismatic base

Definitions

  • the present invention relates to power system devices, and more particularly to an anti-corrosion water-cooled damping resistance wire.
  • UHV DC transmission exhibits unique advantages in long-distance, large-capacity transmission projects, and is an effective way to solve the uneven distribution of energy sources and optimize resource allocation in China.
  • the UHV DC converter valves that have been put into operation have adopted thyristor commutation technology.
  • the snubber capacitor balances the voltage across the thyristors and simultaneously accumulates a certain amount of energy. Most of them are consumed in series with the damper resistors and are released in the form of pulses. Therefore, the damping resistor needs to have good pulse power withstand capability and heat dissipation. Most of the converter valve damping resistors currently in use use indirect water cooling. First, heat is transferred to the surface of the radiator that is in contact with the damping resistor, and then the cooling water is circulated inside the radiator to remove the heat. In order to ensure a good cooling effect and meet the actual service life of the resistance wire, the structure of the resistance wire needs to be improved.
  • An object of the present invention is to provide an integrated direct water-cooled damping wire structure, which increases the contact area between the wire and the cooling water, reduces the resistance to the cooling water, and achieves a better cooling effect.
  • the present invention adopts the following technical solutions: an anti-corrosion water-cooling damping resistance wire body, the resistance wire body comprising a resistor member and a resistance wire outside the resistor member; along an axial direction of the resistor member A protrusion perpendicular to the axial direction is disposed, and an outer edge of the resistor member parallel to the axial direction of the resistor member is provided with a groove for placing a resistance wire; both ends of the resistance wire are corrosion-resistant ends.
  • the invention provides an anti-corrosion water-cooling damping resistance wire body, and a sealing gasket for placing a resistance wire is arranged at the corrosion-resistant end.
  • the invention provides an anti-corrosion water-cooling damping resistance wire body, wherein the corrosion-resistant end is a corrosion-resistant end formed by bonding, fixing and/or compacting at least two of the corrosion-resistant ends.
  • the corrosion-resistant water-cooling damping wire is a blade-type structure including a blade body and a shank, the blade body being vertically placed on the shank surface.
  • a corrosion-resistant water-cooling damping electric resistance wire wherein the surface of the electric resistance wire is plated with an insulating envelope.
  • a corrosion-resistant water-cooling damping wire having a hole for fixing the wire.
  • Another preferred anti-corrosion water-cooling damping electric resistance wire provided by the present invention is composed of equidistant resistance members, and two symmetrical protrusions are vertically disposed at the edge of each equidistant resistance member.
  • a corrosion-resistant water-cooling damping electric resistance wire wherein the grooves are equidistantly asymmetrically disposed perpendicularly on the outer edge of the resistor member.
  • a corrosion-resistant water-cooling damping electric resistance wire wherein the electric resistance wire is evenly wound around the insulating plastic resistor member along a groove of the resistor member.
  • the contact area between the electric resistance wire and the cooling water is increased, the resistance to the cooling water is reduced, and a better cooling effect is achieved;
  • the protrusion on the resistor member of the present invention can be effectively fixed in cold water, providing a simple and convenient fixing method
  • the resistance wire is completely isolated from the water by adding a corrosion-resistant end at the tip end of the resistance wire and sealing the joint, thereby effectively preventing the electrochemical reaction of the resistance wire in the cooling water;
  • the resistor member of the invention can help the fixing of the water in the water according to the structural change form in the damping resistor body, thereby contributing to the improvement of the water cooling effect;
  • the joint between the resistance and the corrosion-resistant end is effectively protected by using a metal cover shielded resistance wire and an anti-corrosion electrode solder joint;
  • the resistor member is divided into several sections to facilitate the winding of the resistance wire and stabilize the shape of the resistance wire.
  • FIG. 1 is a schematic structural view of a resistor according to the present invention.
  • FIG. 2 is a schematic structural view of a resistance wire in the present invention
  • Figure 3 is a schematic view showing the knife-end corrosion-resistant end of the present invention
  • Figure 4 is a schematic view showing the knife end type corrosion resistant end of the present invention
  • Figure 5 is a side view of the corrosion-resistant end of the metal cover of the present invention.
  • the inventive resistance wire body 3 of the present example comprises a resistor member 1 and a resistance wire 5, the surface of the resistor member 1 is smooth and divided into a plurality of equidistant segments, and insulating plastic protrusions are symmetrically disposed on both sides of each segment. 2, in order to enable the resistor member 1 to be clamped to the axis of the water-cooling resistor channel through the protrusions 2 on both sides thereof while fixing the resistance wire 5.
  • the upper and lower edges of the resistor member 1 are provided with equidistant asymmetric grooves 3, and the resistor member 1 is provided with small holes 4 at both ends.
  • the electric resistance wire 5 is evenly wound along the upper and lower sides of the resistor member 1 along the groove 3, and is evenly wound around the rectangular insulating plastic resistor member 1, and both ends of the electric resistance wire 5 are respectively fixed on the small holes 4 at both ends of the resistor member 1.
  • an extremely thin and thermally conductive insulating envelope 6 is applied to the surface of the electric resistance wire 5 to isolate the electric resistance wire from water and to ensure rapid heat dissipation.
  • the corrosion resistance end 10 is welded to both ends of the electric resistance wire 5, and as shown in FIG. 3, the corrosion-resistant end 10 is a knife-type structure, and the knife-knife type structure includes the blade body 11 And the shank 12, the blade body 11 is perpendicularly connected to the shank surface.
  • a gasket 7 with a hole is arranged in the middle of the anti-corrosion electrode, and the two ends of the resistance wire are placed in the hole of the gasket, and then the two corrosion-resistant ends 10 are attached, fixed and pressed to form seal. In this way, complete isolation of the resistance wire from the cooling water is achieved, and an electrochemical reaction will occur on the contact surface of the anticorrosive electrode and the cooling water to effectively protect the resistance wire.
  • the top of the anti-corrosion electrode is provided with a semi-circular hollow stainless steel metal cover 8, and the welding point of the electric resistance wire and the anti-corrosion electrode is placed in the metal cover.
  • the metal cover 8 shields the external electric field, the internal field strength is zero, there is no current, and the electrochemical reaction can be effectively prevented.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Details Of Resistors (AREA)

Abstract

一种防腐蚀水冷阻尼电阻丝体，其特征在于：该电阻丝体包括电阻件（1）和位于该电阻件（1）外的电阻丝（5）；沿该电阻件（1）的轴向上设置有与轴向垂直的突起（2），与该电阻件（1）轴向平行的电阻件外沿设有放置电阻丝（5）的凹槽（3）；该电阻丝（5）两端为耐腐蚀端。该防腐蚀水冷阻尼电阻丝体增加了电阻丝与冷却水的接触面积，降低了冷却水的阻力，达到了更好的冷却效果。

Description

一种防腐蚀水冷阻尼电阻丝体
技术领域- 本发明涉及电力系统器件， 更具体涉及一种防腐蚀水冷阻尼电阻丝体。 背景技术- 特高压直流输电由于在远距离、 大容量输电工程中展现了独特的优势， 故是解决我国能 源分布不均和优化资源配置的有效途径。 目前已投入工程运行的特高压直流换流阀均采用晶 闸管换流技术， 从上世纪中叶至今晶闸管研究和制造已趋于成熟， 但受其功率因素的限制， 单个晶闸管的耐压能力相较于特高压工程的电压等级依旧相差甚远， 所以在工程中使用的晶 闸管阀需要由大量的晶闸管器件串联构成。 由于构成阀的各个晶闸管很难具有完全一致的电 气特性， 所以实现串联晶闸管器件的均压便成为了晶闸管阀必须解决的问题。 而并联于各晶 闸管两端阻尼回路， 很好的解决了晶闸管阀关断过程中的均压问题。 阻尼电容在保障串联各 晶闸管两端电压均衡同时其自身也积累了一定的能量， 大部分都会消耗在与之串联的阻尼电 阻上， 且以脉冲的性质释放。 因此， 阻尼电阻需要具备良好脉冲功率耐受能力以及散热性。 目前投入使用的换流阀阻尼电阻大多采用间接水冷方式， 首先将热量传至与阻尼电阻接触的 散热器表面， 后由散热器内部循环冷却水将热量带走。 为了保障有良好的冷却效果和满足电 阻丝实际需求的使用寿命， 需对电阻丝结构进行改进。 发明内容- 本发明的目的是提供一种一体化直接水冷阻尼电阻丝体的结构， 增加了电阻丝与冷却水 的接触面积， 降低了对冷却水的阻力， 达到了更好的冷却效果。 为实现上述目的， 本发明采用以下技术方案： 一种防腐蚀水冷阻尼电阻丝体， 所述电阻 丝体包括电阻件和位于所述电阻件外的电阻丝； 沿所述电阻件的轴向上设置有与轴向垂直的 凸起， 与所述电阻件轴向平行的电阻件外沿设有放置电阻丝的凹槽； 所述电阻丝两端为耐腐 蚀端。
本发明提供的一种防腐蚀水冷阻尼电阻丝体， 在耐腐蚀端设有安放电阻丝的密封垫。 本发明提供的一种防腐蚀水冷阻尼电阻丝体， 所述耐腐蚀端为至少两个所述耐腐蚀端经 贴合、 固定和 /或压紧形成的耐腐蚀端。
本发明提供的另一优选的一种防腐蚀水冷阻尼电阻丝体， 在所述耐腐蚀端的顶端设置有 将电阻丝与防腐电极的焊接点置于金属罩内的半圆型不锈钢金属罩。 本发明提供的再一优选的一种防腐蚀水冷阻尼电阻丝体， 所述耐腐蚀端为包括刀身和刀 柄， 所述刀身垂直放置在刀柄面上的刀把式结构。
本发明提供的又一优选的一种防腐蚀水冷阻尼电阻丝体， 所述电阻丝表面镀覆有绝缘包 络线。
本发明提供的又一优选的一种防腐蚀水冷阻尼电阻丝体， 所述电阻件两端设有固定所述 电阻丝的孔。
本发明提供的又一优选的一种防腐蚀水冷阻尼电阻丝体，所述电阻件由等距电阻件组成， 在每个等距电阻件边缘垂直设置两个对称突起。
本发明提供的又一优选的一种防腐蚀水冷阻尼电阻丝体， 所述凹槽是等距不对称的垂直 设置在电阻件外沿上。
本发明提供的又一优选的一种防腐蚀水冷阻尼电阻丝体， 所述电阻丝沿着电阻件的凹槽 均匀倾斜缠绕于绝缘塑料电阻件上。
由于采用了上述技术方案， 本发明得到的有益效果是：
1、本发明中通过将电阻丝倾斜缠绕于塑料带后， 增加了电阻丝与冷却水的接触面积， 降 低了对冷却水的阻力， 达到了更好的冷却效果；
2、本发明中电阻件上的突起可以更好地在冷水中有效的固定， 提供了简单便捷的固定方 式；
3、本发明中通过在电阻丝表面镀绝缘包络线， 既能保证良好的冷却效果， 又有效防止电 阻丝在冷却水中发生电化学反应， 保障了使用寿命；
4、本发明中通过在电阻丝首末端加装耐腐蚀端， 并将连接处密封的方式， 实现电阻丝与 完全水隔离， 有效防止了电阻丝在冷却水中发生电化学反应；
5、 本发明中电阻件可以根据阻尼电阻体中的结构变化形态， 有助于自身在水中的固定， 有助于提高水冷效果；
6、本发明中通过采用金属罩屏蔽电阻丝与防腐电极焊点方式， 有效的保护了电阻与耐腐 蚀端连接点；
7、 本发明中电阻件分为若干段， 便于电阻丝的缠绕， 稳固电阻丝的形态。
附图说明
图 1为本发明中电阻件结构示意图；
图 2为本发明中电阻丝结构示意图；
图 3为本发明中刀把式耐腐蚀端示意图； 图 4为本发明的刀把式耐腐蚀端示意图；
图 5: 为本发明的带有金属罩耐腐蚀端侧面示意图；
其中， 1-电阻件， 2-突起， 3-凹槽， 4-小孔， 5-电阻丝， 6-绝缘包络线， 7-密封垫， 8-金 属罩， 9-焊点， 10-耐腐蚀端， 11-刀身， 12-刀柄。
具体实施方式 下面结合实施例对发明作进一步的详细说明。 实施例 1 :
如图 1所示， 本例的发明电阻丝体 3包括电阻件 1和电阻丝 5， 该电阻件 1表面光滑并 分成若干等距段， 在每个分段处两侧对称设有绝缘塑料突起 2， 以便能够让电阻件 1通过其 两侧的突起 2嵌夹于水冷电阻通道轴线上， 同时固定电阻丝 5。 所述电阻件 1上下沿设有等 距不对称凹槽 3， 电阻件 1两端设有小孔 4。 电阻丝 5沿着电阻件 1的上下沿凹槽 3、 均匀倾 斜缠绕于长方形绝缘塑料电阻件 1上， 同时电阻丝 5两端分别固定在电阻件 1两端的小孔 4 上。
如图 2所示， 在电阻丝 5表面镀上一层极薄且导热优良的绝缘包络线 6， 既使得电阻丝 与水隔离， 又能保障快速散热。
为防止电阻丝 5在冷却水中发生电化学腐蚀， 电阻丝 5两端均装焊接了耐腐蚀端 10， 如 图 3所示， 耐腐蚀端 10为刀把式结构， 所述刀把式结构包括刀身 11和刀柄 12， 所述刀身 11垂直连接在刀柄面上。
如图 4所示， 在防腐电极中部装有带孔的密封垫 7， 将所述电阻丝两端置于密封垫孔洞 中， 然后将两块耐腐蚀端 10贴合、 固定、 压紧， 形成密封。 如此便实现了电阻丝与冷却水的 完全隔离， 电化学反应将会在防腐电极与冷却水的接触面上发生， 有效保护电阻丝。
如图 5所示， 防腐电极的顶端设置一个半圆型中空不锈钢金属罩 8， 将电阻丝与防腐电 极的焊接点置于金属罩内。 金属罩 8对外电场起到屏蔽作用， 内部场强为零， 不会存在电流， 能有效防止电化学反应的发生。 最后应该说明的是:以上实施例仅用以说明本发明的技术方案而非对其限制， 尽管参照上 述实施例对本发明进行了详细说明， 所属领域的普通技术人员应当理解： 依然可以对本发明 的具体实施方式进行修改或者等同替换， 而未脱离本发明精神和范围的任何修改或者等同替 换， 其均应涵盖在本权利要求范围当中。

Claims

权 利 要 求
1、 一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述电阻丝体包括电阻件和位于所述电 阻件外的电阻丝； 沿所述电阻件的轴向上设置有与轴向垂直的凸起， 与所述电阻件轴向平行 的电阻件外沿设有放置电阻丝的凹槽； 所述电阻丝两端为耐腐蚀端。
2、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 在耐腐蚀端设有安 放电阻丝的密封垫。
3、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述耐腐蚀端为至 少两个所述耐腐蚀端经贴合、 固定和 /或压紧形成的耐腐蚀端。
4、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 在所述耐腐蚀端的 顶端设置有将电阻丝与防腐电极的焊接点置于金属罩内的半圆型不锈钢金属罩。
5、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述耐腐蚀端为包 括刀身和刀柄， 所述刀身垂直放置在刀柄面上的刀把式结构。
6、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述电阻丝表面镀 覆有绝缘包络线。
7、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述电阻件两端设 有固定所述电阻丝的孔。
8、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述电阻件由等距 电阻件组成， 在每个等距电阻件边缘垂直设置两个对称突起。
9、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述凹槽是等距不 对称的垂直设置在电阻件外沿上。
1 0、 如权利要求 1所述的一种防腐蚀水冷阻尼电阻丝体， 其特征在于： 所述电阻丝沿 着电阻件的凹槽均匀倾斜缠绕于绝缘塑料电阻件上。
PCT/CN2013/088525 2012-12-13 2013-12-04 一种防腐蚀水冷阻尼电阻丝体 Ceased WO2014090103A1 (zh)

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