WO2011082528A1 - 油浸式负荷开关动触头 - Google Patents

油浸式负荷开关动触头 Download PDF

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Publication number
WO2011082528A1
WO2011082528A1 PCT/CN2010/070061 CN2010070061W WO2011082528A1 WO 2011082528 A1 WO2011082528 A1 WO 2011082528A1 CN 2010070061 W CN2010070061 W CN 2010070061W WO 2011082528 A1 WO2011082528 A1 WO 2011082528A1
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WO
WIPO (PCT)
Prior art keywords
contact plate
contact
spring piece
oil
plate
Prior art date
Application number
PCT/CN2010/070061
Other languages
English (en)
French (fr)
Inventor
郑方伟
黄留留
Original Assignee
库柏电子科技(上海)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 库柏电子科技(上海)有限公司 filed Critical 库柏电子科技(上海)有限公司
Priority to PCT/CN2010/070061 priority Critical patent/WO2011082528A1/zh
Priority to CN2010800608888A priority patent/CN102804295A/zh
Publication of WO2011082528A1 publication Critical patent/WO2011082528A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/42—Knife-and-clip contacts

Definitions

  • the present invention relates to the field of power transmission and distribution equipment, and more particularly to an oil immersed load switch moving contact. Background technique
  • the oil-immersed load switch is a commonly used component in the American-style box change in the field of high-voltage power distribution.
  • the prior art adopts the following structure to realize the moving contact of the oil immersed load switch.
  • the oil immersed load switch moving contact includes two contact plates 101 and 102 which are flat, and the contact plates 101 and 102 are aligned with each other.
  • the through hole is provided with a spring member 104 passing through the through hole, the spring member 104 including a center rod passing through the through hole and a spring 106 fitted over the center rod.
  • the compression spring 106 By the compression spring 106, the spring force generated by the spring 106 presses the contact plate 101 against the contact plate 102.
  • there are holding projections 108 for holding the stationary contacts 110.
  • the clamping force of the contact plates 101 and 102 for the stationary contact 1 10 is entirely derived from the spring force of the spring 106.
  • the present invention is directed to an oil immersed load switch moving contact having a smaller size.
  • an oil immersed load switch moving contact comprising: a contact plate comprising: an upper contact plate and a lower contact plate having the same shape, an upper contact plate and The lower contact plates are oppositely disposed, and each of the upper contact plate and the lower contact plate has an intermediate portion, a clamping portion, and a transition portion connecting the intermediate portion and the clamping portion, wherein the clamping portion is located at the intermediate portion On both sides, the gap between the upper portion of the upper contact plate and the lower contact plate is smaller than the gap between the upper contact plate and the lower contact plate;
  • the spring piece includes an upper spring piece that cooperates with the upper contact plate and a lower spring piece that cooperates with the lower contact plate, each of the upper spring piece and the lower spring piece has a flat central portion and a curved clamping portion
  • the clamping portion is located on both sides of the central portion, and in the direction from the middle to the edge, the clamping portion is first opened outward and then tightened inwardly, and the clamping portion of the spring piece contacts the clamping portion of the contact plate, the clamp The spring force of the tight portion acts on the clamping portion to bring the clamping portions of the upper contact plate and the lower contact plate inwardly close together;
  • contact plate and the spring piece are deformed to generate contact pressure, so that the contact pressure is balanced when the moving contact and the static contact are closed;
  • the current carried is divided into two parts and carried by the contact plates.
  • a fixing assembly relatively fixes the upper contact plate and the lower contact plate together, and a spacer between the upper contact plate and the lower contact plate, the spacer sleeve making the upper contact plate and The middle portion of the lower contact plate does not touch.
  • the gap between the upper contact plate and the lower contact plate is adjusted by adjusting the thickness of the spacer.
  • the upper spring piece is fixed to the outer side of the upper contact plate by the fixing component, and the central part of the upper spring piece is in contact with the middle part of the upper contact plate, and the lower spring piece is fixed to the outer side of the lower contact plate by the fixing component, and the lower spring piece
  • the central portion is in contact with the intermediate portion of the lower contact plate.
  • the stationary component is a fastener, and the fastener includes a bolt, a nut or a rivet, and the upper contact plate, the lower contact plate, the upper spring plate and the lower spring piece have mutually aligned holes through which the screws pass.
  • a mounting assembly relatively secures the upper and lower contact plates together with the intermediate portions of the upper and lower contact plates in floating contact.
  • the upper spring piece is fixed to the outer side of the upper contact plate by the fixing component, and the central part of the upper spring piece is not in contact with the middle part of the upper contact plate, and the lower spring piece is fixed to the outer side of the lower contact plate by the fixing component, and the lower spring
  • the central portion of the sheet does not contact the intermediate portion of the lower contact plate.
  • the fixing component is a fastener, the fastener comprises a bolt, a nut or a rivet, and the upper contact plate, the lower contact plate, the upper spring piece and the lower spring piece have mutually aligned holes for passing through, the holes are provided for the fastener Pass through.
  • the clamping portions of the upper and lower contact plates have clamping projections for holding the stationary contacts.
  • the oil-immersed load switch moving contact of the present invention uses the deformation of the contact plate itself combined with the spring piece Deformation to provide contact pressure.
  • the size of the spring piece can be reduced and a small gap between the contact plates can be obtained.
  • the small contact plate gap can effectively utilize the fault current to improve the contact pressure under fault conditions, thereby improving the reliability of the switch.
  • the longitudinal dimension of the oil-immersed load switch moving contact of the invention is smaller, and the thickness direction of the conventional oil-immersed load switch moving contact is generally not smaller than
  • the oil-immersed load switch as a whole can be made smaller, and the corresponding oil-immersed transformer can also be made smaller to reduce the cost of the end user.
  • Figure 1 discloses the structure of an oil immersed load switch moving contact in the prior art.
  • FIG. 2 illustrates the structure of an oil immersed load switch moving contact in accordance with an embodiment of the present invention.
  • Fig. 3 is a view showing the cooperation of the oil-immersed load switch moving contact and the fixed contact of the embodiment shown in Fig. 2.
  • Fig. 4 discloses the structure of an oil immersed load switch moving contact according to another embodiment of the present invention. Detailed ways
  • the invention utilizes the elastic force generated by the deformation of the contact plate itself to combine the spring force of the spring piece to form the contact pressure, and the electric power generated by the large current increases the contact pressure, so that the dependence of the spring force under the condition of large current is made.
  • the size of the spring is reduced to reduce the overall size.
  • FIG. 2 discloses a structure of an oil-immersed load switch moving contact according to an embodiment of the present invention.
  • the oil-immersed load switch moving contact 200 includes: a contact plate, a spring piece, and a fixed component. .
  • the contact plate includes an upper contact plate 202 and a lower contact plate 204 having the same shape, the upper contact plate 202 and the lower contact plate 204 are disposed opposite each other, and each of the upper contact plate 202 and the lower contact plate 204 There are intermediate portions 202a and 204a, clamping portions 202b and 204b, and transition portions 202c and 204c connecting the intermediate portion and the clamping portion.
  • the clamping portions 202b and 204b are in the middle Both sides of portions 202a and 204a.
  • the gap between the intermediate portions 202a and 204a of the upper contact plate 202 and the lower contact plate 204 is smaller than the gap between the clamping portions 202b and 204b of the upper contact plate 202 and the lower contact plate 204.
  • the spring leaf includes an upper spring piece 302 that mates with the upper contact plate 202 and a lower spring piece 304 that cooperates with the lower contact plate 204, each of the upper spring piece 302 and the lower spring piece 304 having a flat central portion 302a and 304a And curved clamping portions 302b and 304b.
  • the clamping portion clamping portions 302b and 304b are located on both sides of the central portions 302a and 304a.
  • the clamping portion clamping portions 302b and 304b are first opened outwardly and then tightened inwardly, and the clamping portion of the spring piece comes into contact with the clamping portion of the contact plate, and the clamping portions 302b and 304b
  • the spring force acts on the clamping portions 202b and 204b to bring the clamping portions 202b and 204b of the upper and lower contact plates inwardly.
  • the contact plate and the spring piece are deformed to generate the contact pressure, so that the contact pressure is balanced when the moving contact and the static contact are closed, and the current is equally divided into two parts, which are carried by the contact plate.
  • the fixing assembly 400 relatively fixes the upper contact plate 202 and the lower contact plate 204 together.
  • a spacer 402 is disposed between the upper contact plate 202 and the lower contact plate 204.
  • the spacer 402 prevents the intermediate portions of the upper contact plate and the lower contact plate from contacting, leaving a gap.
  • the gap between the upper contact plate and the lower contact plate can be adjusted by adjusting the thickness of the spacer 402 (e.g., using spacers having different thicknesses).
  • the fixing assembly 400 is a screw and a nut or an equivalent fastening component such as a rivet or the like, and the upper contact plate 202, the lower contact plate 204, the upper spring piece 302 and the lower spring piece 304 have mutually aligned screws for passing through. hole. Screws and nuts or equivalent fastening members such as rivets or the like pass through the holes to fix the upper contact plate 202, the lower contact plate 204, the upper spring piece 302, and the lower spring piece 304 together.
  • the upper spring piece 302 is fixed to the outer side of the upper contact plate 202 by the fixing assembly 400, and the central portion 302a of the upper spring piece 302 is in contact with the intermediate portion 202a of the upper contact plate 202.
  • the lower spring piece 304 is fixed to the outer side of the lower contact plate 204 by the fixing assembly 400, and the central portion 304a of the lower spring piece 304 is in contact with the intermediate portion 204a of the lower contact plate 204.
  • FIG. 3 is a schematic view showing the cooperation of the oil-immersed load switch moving contact and the static contact of the embodiment shown in FIG. As shown in FIG. 3, when mated with the stationary contact 500, the clamping protrusions 206 of the clamping portions 202b and 204b of the upper contact plate 202 and the lower contact plate 204 sandwich the stationary contact 500.
  • the static contact 500 has a certain thickness
  • the upper contact plate 202 and the lower contact plate 204, as well as the upper spring piece 302 and the lower spring piece 304 are deformed, and thus the elastic force generated by the deformation of the contact plate itself is formed. Together with the spring force of the spring piece, the contact pressure is formed, and the upper contact plate 202 and the lower contact plate 204 are pressed in the direction of the close contact.
  • the contact pressure in this embodiment is provided by the deformation of the contact plate and the spring piece together.
  • the adjustment of the pressure can be easily realized by adjusting the gap between the contact plates, and the gap in the middle portion of the contact plate is small.
  • This design can more effectively utilize the electric power generated by the fault current to increase stability.
  • the design of this embodiment can allow for the design of smaller and less expensive switches and transformers.
  • Fig. 4 discloses the structure of an oil immersed load switch moving contact according to another embodiment of the present invention.
  • the oil immersed load switch moving contact 200 includes: a contact plate, a spring piece, and a fixing assembly.
  • the contact plate includes an upper contact plate 202 and a lower contact plate 204 having the same shape, the upper contact plate 202 and the lower contact plate 204 are disposed opposite each other, and each of the upper contact plate 202 and the lower contact plate 204 There are intermediate portions 202a and 204a, clamping portions 202b and 204b, and transition portions 202c and 204c connecting the intermediate portion and the clamping portion.
  • the clamping portions 202b and 204b are located on both sides of the intermediate portions 202a and 204a.
  • the floating contact between the intermediate portions 202a and 204a of the upper contact plate 202 and the lower contact plate 204, without gaps, is also understood to be between the intermediate portions 202a and 204a of the upper contact plate 202 and the lower contact plate 204.
  • the gap (zero) is smaller than the gap between the clamping portions 202b and 204b.
  • the spring leaf includes an upper spring piece 302 that mates with the upper contact plate 202 and a lower spring piece 304 that cooperates with the lower contact plate 204, each of the upper spring piece 302 and the lower spring piece 304 having a flat central portion 302a and 304a And curved clamping portions 302b and 304b.
  • the clamping portion clamping portions 302b and 304b are located on both sides of the central portions 302a and 304a.
  • the clamping portion clamping portions 302b and 304b are first opened outwardly and then tightened inwardly, and the clamping portion of the spring piece comes into contact with the clamping portion of the contact plate, and the clamping portions 302b and 304b
  • the spring force acts on the clamping portions 202b and 204b to bring the clamping portions 202b and 204b of the upper and lower contact plates inwardly.
  • the fixing assembly 400 relatively fixes the upper contact plate 202 and the lower contact plate 204 together. In the embodiment shown in FIG. 4, the floating contact between the upper contact plate 202 and the lower contact plate 204, the upper contact The intermediate portions 202a and 204a of the plate 202 and the lower contact plate 204 are not in contact.
  • the fixing assembly 400 is a screw and a nut, and the upper contact plate 202, the lower contact plate 204, the upper spring piece 302, and the lower spring piece 304 have mutually aligned holes through which the screws pass. Screws and nuts pass through the holes to secure the upper contact plate 202, the lower contact plate 204, the upper spring piece 302, and the lower spring piece 304 together.
  • the upper spring piece 302 is fixed to the outer side of the upper contact plate 202 by the fixing assembly 400, and the central portion 302a of the upper spring piece 302 is not in contact with the intermediate portion 202a of the upper contact plate 202.
  • the lower spring piece 304 is fixed to the outside of the lower contact plate 204 by the fixing assembly 400, and the central portion 304a of the lower spring piece 304 is not in contact with the intermediate portion 204a of the lower contact plate 204.
  • the upper contact plate 202 and the lower contact plate 204 are in floating contact so that most of the contact pressure will be provided by the spring tabs.
  • the material of the spring piece may be spring steel or the like, and the spring steel is more stable in carrying a large current (e.g., fault current) than copper. This is because the high temperature generated by the fault current softens the copper, which greatly reduces the spring plate's elasticity and contact pressure.
  • the oil-immersed load switch moving contact of the invention can be assembled on various high-voltage devices such as load switches, grounding switches and isolating switches, and is used for connecting, disconnecting or grounding of high-voltage equipment circuits.
  • the two station load utilizing the present invention can be used in an American box change or switching device filled with mineral transformer oil or environmentally friendly FR3 transformer oil.
  • the operating mechanism of the switch is a manual spring energy storage over-spring mechanism, and the switching speed of the switch is not affected by the manual operation speed.
  • the spring mechanism can perform load breaking or closing operations in one cycle.
  • the two-station load switch includes an operating shaft seal system with dual 0-ring seals and 3 optional mounting mounting panels including bolt-on panel assembly, welded brackets for panel mounting or ring-type quick-mount panel assembly.
  • the built-in limit included in the switch mechanism allows the switch to have only two positions.
  • the switch operation is a rotating operation of the live lever.
  • the oil immersed load switch moving contact of the present invention uses the deformation of the contact plate itself in combination with the deformation of the spring piece to provide the contact pressure.
  • the size of the spring piece can be reduced, and a smaller contact plate can be obtained The gap between them.
  • the small contact plate gap can effectively utilize the fault current to improve the contact pressure under fault conditions, thereby improving the reliability of the switch.
  • the longitudinal dimension of the oil-immersed load switch moving contact of the invention is smaller, and the thickness direction of the conventional oil-immersed load switch moving contact is generally not smaller than
  • the oil-immersed load switch as a whole can be made smaller, and the corresponding oil-immersed transformer can also be made smaller to reduce the cost of the end user.

Description

油浸式负荷开关动触头 技术领域
本发明涉及输配电设备领域， 更具体地说， 涉及一种油浸式负荷开关 动触头。 背景技术
油浸式负荷开关是高压配电领域中美式箱变中常用部件。 为了实现开 关高载流的目的， 现有技术中采用如下的结构来实现油浸式负荷开关的动 触头。
参考图 1 所示，该油浸式负荷开关动触头包括两片触头板 101和 102， 该两片触头板 101和 102为平板状，触头板 101和 102上开有互相对准的 通孔， 穿过通孔设置弹簧部件 104 , 该弹簧部件 104包括穿过通孔的中央 杆和套在中央杆上的弹簧 106。 通过压缩弹簧 106， 弹簧 106产生的弹簧 力将触头板 101压向触头板 102。 在两片触头板 101和 102的两端具有夹 持突起 108 , 夹持突起 108用于夹持静触头 1 10。 触头板 101和 102对于 静触头 1 10的夹持力完全来源于弹簧 106的弹簧力。
为了实现高载流的目的， 会使用到更粗壮的触头， 而由于这种结构的 触头压力完全是依靠压缩弹簧 106的变形来提供。 压缩弹簧的使用降低了 减少相间的有效绝缘距离， 也导致了相同电压等级下的尺寸的增加， 使得 油浸式负荷开关的外形尺寸更大， 从而导致用油浸式负荷开关的设备体积 更大， 成本更高。 发明内容
本发明旨在提供一种具有更小的尺寸的油浸式负荷开关动触头。
根据本发明的一实施例， 提出一种油浸式负荷开关动触头， 包括： 触头板， 触头板包括具有相同的形状的上触头板和下触头板， 上触头 板和下触头板相对设置， 上触头板和下触头板中的每一个具有中间部分、 夹持部分和连接中间部分与夹持部分的过渡部分， 夹持部分位于中间部分 的两侧， 上触头板和下触头板的中间部分的间隙小于上触头板和下触头板 的夹持部分的间隙；
弹簧片， 弹簧片包括与上触头板配合的上弹簧片以及与下触头板配合 的下弹簧片， 上弹簧片和下弹簧片中的每一个具有平坦的中央部分和弯曲 的夹紧部分， 夹紧部分位于中央部分的两侧， 沿从中间向边缘的方向， 夹 紧部分先向外张开再向内收紧， 弹簧片的夹紧部分与触头板的夹持部分接 触， 夹紧部分的弹簧力作用在夹持部分使上触头板和下触头板的夹持部分 向内靠拢；
其中触头板和弹簧片变形产生触头压力， 使得动触头与静触头合闸配 合时触头压力相互平衡；
所载电流被等分为两部分， 由触头板承载。
在一个实施例中， 一固定组件将上触头板和下触头板相对地固定在一 起， 且上触头板和下触头板之间具有一隔套， 隔套使得上触头板和下触头 板的中间部分不接触。 上触头板和下触头板间的间隙通过调整隔套的厚度 加以调整。 上弹簧片通过固定组件固定在上触头板的外侧， 且上弹簧片的 中央部分与上触头板的中间部分接触， 下弹簧片通过固定组件固定在下触 头板的外侧， 且下弹簧片的中央部分与下触头板的中间部分接触。 固定组 件是紧固件， 紧固件包括螺栓、 螺母或铆钉， 上触头板、 下触头板、 上弹 簧片和下弹簧片上具有相互对准的供螺丝穿过的孔。
在一个实施例中， 一固定组件将上触头板和下触头板相对地固定在一 起， 上触头板和下触头板的中间部分浮动接触。 上弹簧片通过固定组件固 定在上触头板的外侧， 且上弹簧片的中央部分与上触头板的中间部分不接 触， 下弹簧片通过固定组件固定在下触头板的外侧， 且下弹簧片的中央部 分与下触头板的中间部分不接触。 固定组件是紧固件， 紧固件包括螺栓、 螺母或铆钉， 上触头板、 下触头板、 上弹簧片和下弹簧片上具有相互对准 的供穿过的孔， 孔供紧固件穿过。
在一个实施例中， 上触头板和下触头板的夹持部分具有夹持突起， 夹 持突起用于夹持静触头。
本发明的油浸式负荷开关动触头使用触头板本身的形变结合弹簧片的 变形来提供触头压力。 可以减小弹簧片的尺寸， 并且得到较小的触头板之 间的间隙。 触头板间隙较小能够有效利用故障电流来提高故障情况下的触 头压力， 从而提高开关的可靠性。 本发明的油浸式负荷开关动触头纵向尺 寸更小， 传统的油浸式负荷开关动触头的装配厚度方向尺寸一般都不小于
30mm , 而本发明计约为 18mm。 因而油浸式负荷开关整体上可以 4故的更 小， 相应的油浸式变压器从而也可以做的更小以降低最终用户的成本。 附图说明
本实用新型的上述的以及其他的特征、 性质和优势将通过下面结合附 图和实施例的描述而变得更加明显， 在附图中， 相同的附图标记始终表示 相同的特征， 其中：
图 1揭示了现有技术中油浸式负荷开关动触头的结构。
图 2揭示了根据本发明的一实施例的油浸式负荷开关动触头的结构。 图 3揭示了图 2所示的实施例的油浸式负荷开关动触头与静触头配合 的示意图。
图 4 揭示了根据本发明的另一实施例的油浸式负荷开关动触头的结 构。 具体实施方式
本发明利用触头板自身形变产生的弹性力结合弹簧片的弹簧力来形成 触头压力， 同时大电流产生的电动力来提高触头压力， 使得对于弹簧力在 大电流下的情况下的依赖减小，减小弹簧的尺寸从而实现整体尺寸的缩小。
参考图 2所示， 图 2揭示了根据本发明的一实施例的油浸式负荷开关 动触头的结构， 该油浸式负荷开关动触头 200包括： 触头板、 弹簧片以及 固定组件。
触头板包括具有相同的形状的上触头板 202和下触头板 204 , 上触头 板 202和下触头板 204相对设置，上触头板 202和下触头板 204中的每一 个具有中间部分 202a和 204a、 夹持部分 202b和 204b、 以及连接中间部 分与夹持部分的过渡部分 202c和 204c。夹持部分 202b和 204b位于中间 部分 202a和 204a的两侧。上触头板 202和下触头板 204的中间部分 202a 和 204a之间的间隙小于上触头板 202和下触头板 204的夹持部分 202b 和 204b之间的间隙。
弹簧片包括与上触头板 202配合的上弹簧片 302以及与下触头板 204 配合的下弹簧片 304 , 上弹簧片 302和下弹簧片 304中的每一个具有平坦 的中央部分 302a和 304a以及弯曲的夹紧部分 302b和 304b。夹紧部分夹 紧部分 302b和 304b位于中央部分 302a和 304a的两侧。 沿从中间向边 缘的方向， 夹紧部分夹紧部分 302b和 304b先向外张开再向内收紧， 弹簧 片的夹紧部分与触头板的夹持部分接触， 夹紧部分 302b和 304b的弹簧力 作用在夹持部分 202b和 204b使上触头板和下触头板的夹持部分 202b和 204b向内靠拢。
触头板和弹簧片变形产生触头压力， 使得动触头与静触头合闸配合时 触头压力相互平衡， 所载电流被等分为两部分， 由触头板承载。
固定组件 400将上触头板 202和下触头板 204相对地固定在一起，在 图 1所示的实施例中，上触头板 202和下触头板 204之间具有一隔套 402， 隔套 402使得上触头板和下触头板的中间部分不接触， 留有一个间隙。 同 时， 上触头板和下触头板间的间隙可以通过调整隔套 402的厚度 （比如使 用具有不同厚度的隔套） 而加以调整。 固定组件 400是螺丝和螺母或者等 效的紧固零件如铆钉等， 上触头板 202、 下触头板 204、 上弹簧片 302和 下弹簧片 304上具有相互对准的供螺丝穿过的孔。 螺丝和螺母或者等效的 紧固零件如铆钉等穿过这些孔将上触头板 202、 下触头板 204、 上弹簧片 302和下弹簧片 304固定在一起。
继续参考图 1 , 该实施例中上弹簧片 302通过固定组件 400固定在上 触头板 202的外侧， 且上弹簧片 302的中央部分 302a与上触头板 202的 中间部分 202a接触。下弹簧片 304通过固定组件 400固定在下触头板 204 的外侧，且下弹簧片 304的中央部分 304a与下触头板 204的中间部分 204a 接触。
在上触头板 202和下触头板 204的夹持部分 202b和 204b的端部具 有夹持突起 206 , 夹持突起 206用于夹持静触头。 图 3揭示了图 2所示的实施例的油浸式负荷开关动触头与静触头配合 的示意图。 如图 3所示， 在与静触头 500配合时， 上触头板 202和下触头 板 204的夹持部分 202b和 204b的夹持突起 206夹持静触头 500。由于静 触头 500具有一定的厚度， 因此使得上触头板 202和下触头板 204、 以及 上弹簧片 302和下弹簧片 304都发生了形变， 于是， 触头板自身形变产生 的弹性力和弹簧片的弹簧力共同形成触头压力， 将上触头板 202和下触头 板 204朝着靠拢的方向压紧。
该实施例中的触头压力由触头板和弹簧片共同通过变形来提供， 通过 调节触头板间的间隙可以很容易的实现压力的调节， 在触头板的中间部分 的间隙较小，该设计能更有效的利用故障电流产生的电动力来增加稳定性。 该实施例的设计可以允许设计更小和更便宜的开关和变压器。
图 4 揭示了根据本发明的另一实施例的油浸式负荷开关动触头的结 构。 该油浸式负荷开关动触头 200包括： 触头板、 弹簧片以及固定组件。
触头板包括具有相同的形状的上触头板 202和下触头板 204 , 上触头 板 202和下触头板 204相对设置，上触头板 202和下触头板 204中的每一 个具有中间部分 202a和 204a、 夹持部分 202b和 204b、 以及连接中间部 分与夹持部分的过渡部分 202c和 204c。夹持部分 202b和 204b位于中间 部分 202a和 204a的两侧。上触头板 202和下触头板 204的中间部分 202a 和 204a之间浮动接触， 没有间隙， 也可以理解为， 上触头板 202和下触 头板 204的中间部分 202a和 204a之间的间隙（为零）小于夹持部分 202b 和 204b之间的间隙。
弹簧片包括与上触头板 202配合的上弹簧片 302以及与下触头板 204 配合的下弹簧片 304 , 上弹簧片 302和下弹簧片 304中的每一个具有平坦 的中央部分 302a和 304a以及弯曲的夹紧部分 302b和 304b。夹紧部分夹 紧部分 302b和 304b位于中央部分 302a和 304a的两侧。 沿从中间向边 缘的方向， 夹紧部分夹紧部分 302b和 304b先向外张开再向内收紧， 弹簧 片的夹紧部分与触头板的夹持部分接触， 夹紧部分 302b和 304b的弹簧力 作用在夹持部分 202b和 204b使上触头板和下触头板的夹持部分 202b和 204b向内靠拢。 固定组件 400将上触头板 202和下触头板 204相对地固定在一起，在 图 4所示的实施例中， 上触头板 202和下触头板 204之间浮动接触， 上触 头板 202和下触头板 204的中间部分 202a和 204a不接触。固定组件 400 是螺丝和螺母， 上触头板 202、 下触头板 204、 上弹簧片 302和下弹簧片 304 上具有相互对准的供螺丝穿过的孔。 螺丝和螺母穿过这些孔将上触头 板 202、 下触头板 204、 上弹簧片 302和下弹簧片 304固定在一起。
继续参考图 4， 该实施例中上弹簧片 302通过固定组件 400固定在上 触头板 202的外侧， 且上弹簧片 302的中央部分 302a与上触头板 202的 中间部分 202a不接触。 下弹簧片 304通过固定组件 400 固定在下触头板 204的外侧， 且下弹簧片 304的中央部分 304a与下触头板 204的中间部 分 204a不接触。
在上触头板 202和下触头板 204的夹持部分 202b和 204b的端部具 有夹持突起 206 , 夹持突起 206用于夹持静触头。
在图 4所示的实施例中， 上触头板 202和下触头板 204之间是浮动接 触的， 因此绝大部分的触头压力将由弹簧片来提供。 在该实施例中， 弹簧 片的材质可以是弹簧钢或者类似材料， 与铜相比较， 弹簧钢在承载大电流 (如故障电流）时将更加稳定。 这是因为故障电流产生的高温会使铜软化， 从而大大减少弹簧片的弹性和触头压力。
本发明的油浸式负荷开关动触头可以装配于各类负荷开关、 接地开关 和隔离开关等高压设备， 用于高压设备回路的连接、 断开或接地。 利用本 发明的两工位负荷可用于充有矿物变压器油或环保的 FR3变压器油的美式 箱变或开关设备中。 开关的操作机构为手动弹簧储能过中弹簧机构， 开关 分合速度不受人工操作速度的影响。 弹簧机构可以在一个周波内完成负荷 开断或者关合操作。 两工位负荷开关包括有带双 0型密封圈的操作轴密封 系统和 3种可选的安装方式安装面板包括螺栓安装式面板装配、 焊接支架 是面板装配或环型快速安装面板装配。 开关机构包含的内置限位使开关只 能有两个位置。 开关操作为带电操作杆旋转操作。
本发明的油浸式负荷开关动触头使用触头板本身的形变结合弹簧片的 变形来提供触头压力。 可以减小弹簧片的尺寸， 并且得到较小的触头板之 间的间隙。 触头板间隙较小能够有效利用故障电流来提高故障情况下的触 头压力， 从而提高开关的可靠性。 本发明的油浸式负荷开关动触头纵向尺 寸更小， 传统的油浸式负荷开关动触头的装配厚度方向尺寸一般都不小于
30mm , 而本发明计约为 18mm。 因而油浸式负荷开关整体上可以 4故的更 小， 相应的油浸式变压器从而也可以做的更小以降低最终用户的成本。
上述实施例是提供给熟悉本领域内的人员来实现或使用本实用新型 的， 熟悉本领域的人员可在不脱离本实用新型的实用新型思想的情况下， 对上述实施例做出种种修改或变化， 因而本实用新型的保护范围并不被上 述实施例所限， 而应该是符合权利要求书提到的创新性特征的最大范围。

Claims

权利要求
1. 一种油浸式负荷开关动触头， 其特征在于， 包括：
触头板， 触头板包括具有相同的形状的上触头板和下触头板， 上触头 板和下触头板相对设置， 上触头板和下触头板中的每一个具有中间部分、 夹持部分和连接中间部分与夹持部分的过渡部分， 夹持部分位于中间部分 的两侧， 上触头板和下触头板的中间部分的间隙小于上触头板和下触头板 的夹持部分的间隙；
弹簧片， 弹簧片包括与上触头板配合的上弹簧片以及与下触头板配合 的下弹簧片， 上弹簧片和下弹簧片中的每一个具有平坦的中央部分和弯曲 的夹紧部分， 夹紧部分位于中央部分的两侧， 沿从中间向边缘的方向， 夹 紧部分先向外张开再向内收紧， 弹簧片的夹紧部分与触头板的夹持部分接 触， 夹紧部分的弹簧力作用在夹持部分使上触头板和下触头板的夹持部分 向内靠拢；
其中所述触头板和弹簧片变形产生触头压力， 使得动触头与静触头合 闸配合时触头压力相互平衡；
所载电流被等分为两部分， 由所述触头板承载。
2. 如权利要求 1 所述的油浸式负荷开关动触头， 其特征在于， 一固定组件将上触头板和下触头板相对地固定在一起， 且上触头板和 下触头板之间具有一隔套， 隔套使得上触头板和下触头板的中间部分不接 触。
3. 如权利要求 1 所述的油浸式负荷开关动触头， 其特征在于， 上触头板和下触头板间的间隙通过调整隔套的厚度加以调整。
4. 如权利要求 2所述的油浸式负荷开关动触头， 其特征在于， 上弹簧片通过所述固定组件固定在上触头板的外侧， 且上弹簧片的中 央部分与上触头板的中间部分接触， 下弹簧片通过所述固定组件固定在下触头板的外侧， 且下弹簧片的中 央部分与下触头板的中间部分接触。
5. 如权利要求 4所述的油浸式负荷开关动触头， 其特征在于， 所述固定组件是紧固件， 所述紧固件包括螺栓、 螺母或铆钉， 所述上 触头板、 下触头板、 上弹簧片和下弹簧片上具有相互对准的供螺丝穿过的 孔。
6. 如权利要求 1 所述的油浸式负荷开关动触头， 其特征在于， 一固定组件将上触头板和下触头板相对地固定在一起， 上触头板和下 触头板的中间部分浮动接触。
7. 如权利要求 6所述的油浸式负荷开关动触头， 其特征在于， 上弹簧片通过所述固定组件固定在上触头板的外侧， 且上弹簧片的中 央部分与上触头板的中间部分不接触，
下弹簧片通过所述固定组件固定在下触头板的外侧， 且下弹簧片的中 央部分与下触头板的中间部分不接触。
8. 如权利要求 7所述的油浸式负荷开关动触头， 其特征在于， 所述固定组件是紧固件， 所述紧固件包括螺栓、 螺母或铆钉， 所述上 触头板、 下触头板、 上弹簧片和下弹簧片上具有相互对准的供穿过的孔， 所述孔供紧固件穿过。
9. 如权利要求 1 所述的油浸式负荷开关动触头， 其特征在于， 上触头板和下触头板的夹持部分具有夹持突起， 夹持突起用于夹持静 触头。
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102254712A (zh) * 2011-07-18 2011-11-23 句容华源电器设备有限公司 变压器调容开关高压触头
CN103582925A (zh) * 2011-06-07 2014-02-12 Abb有限公司 开关
WO2014096509A1 (en) * 2012-12-20 2014-06-26 Abb Oy Movable contact of electric switch
GB2524502A (en) * 2014-03-24 2015-09-30 Eaton Ind Netherlands Bv Plug contact
WO2019053338A1 (en) * 2017-09-15 2019-03-21 Abb Oy ELECTRIC SWITCH
DE102020203190B3 (de) 2020-03-12 2021-08-05 Siemens Aktiengesellschaft Trennvorrichtung und schutzgasisolierte Mittelspannungs-Leistungsschaltanlage
GB2601156A (en) * 2020-11-20 2022-05-25 Eaton Intelligent Power Ltd Changeover switch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI11883U1 (fi) * 2017-09-15 2017-12-05 Abb Oy Sähkökytkin
CN108511211A (zh) * 2018-05-21 2018-09-07 河南森源电气股份有限公司 一种负荷开关及其静触片组件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1263640A (en) * 1969-11-03 1972-02-16 Reinhausen Maschf Scheubeck Contact bridge for step selectors of regulating transformers
JPS6192330A (ja) * 1984-10-12 1986-05-10 Yaskawa Electric Mfg Co Ltd 複合ばね及びこれを用いた主回路断路装置
FR2793963A1 (fr) * 1999-05-20 2000-11-24 Schneider Electric Ind Sa Dispositif d'embrochage d'une plage de contact sur une pince de connection, unite fonctionnelle de depart d'une cellule electrique comprenant un tel dispositif et cellule equipee d'une telle unite
JP2001093750A (ja) * 1999-09-21 2001-04-06 Toshiba Corp タップ切換装置の接点機構
CN101383233A (zh) * 2008-02-26 2009-03-11 上海华明电力设备制造有限公司 一种分接开关用的动触头

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1263640A (en) * 1969-11-03 1972-02-16 Reinhausen Maschf Scheubeck Contact bridge for step selectors of regulating transformers
JPS6192330A (ja) * 1984-10-12 1986-05-10 Yaskawa Electric Mfg Co Ltd 複合ばね及びこれを用いた主回路断路装置
FR2793963A1 (fr) * 1999-05-20 2000-11-24 Schneider Electric Ind Sa Dispositif d'embrochage d'une plage de contact sur une pince de connection, unite fonctionnelle de depart d'une cellule electrique comprenant un tel dispositif et cellule equipee d'une telle unite
JP2001093750A (ja) * 1999-09-21 2001-04-06 Toshiba Corp タップ切換装置の接点機構
CN101383233A (zh) * 2008-02-26 2009-03-11 上海华明电力设备制造有限公司 一种分接开关用的动触头

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103582925A (zh) * 2011-06-07 2014-02-12 Abb有限公司 开关
CN102254712A (zh) * 2011-07-18 2011-11-23 句容华源电器设备有限公司 变压器调容开关高压触头
WO2014096509A1 (en) * 2012-12-20 2014-06-26 Abb Oy Movable contact of electric switch
RU2585750C1 (ru) * 2012-12-20 2016-06-10 Абб Ои Подвижный контакт электрического переключателя
US9697958B2 (en) 2012-12-20 2017-07-04 Abb Oy Movable contact of electric switch
GB2524502A (en) * 2014-03-24 2015-09-30 Eaton Ind Netherlands Bv Plug contact
WO2019053338A1 (en) * 2017-09-15 2019-03-21 Abb Oy ELECTRIC SWITCH
EP3682456A4 (en) * 2017-09-15 2021-06-23 ABB Schweiz AG ELECTRICAL SWITCH
US11107642B2 (en) 2017-09-15 2021-08-31 Abb Schweiz Ag Electrical switch
DE102020203190B3 (de) 2020-03-12 2021-08-05 Siemens Aktiengesellschaft Trennvorrichtung und schutzgasisolierte Mittelspannungs-Leistungsschaltanlage
GB2601156A (en) * 2020-11-20 2022-05-25 Eaton Intelligent Power Ltd Changeover switch
US11527369B2 (en) 2020-11-20 2022-12-13 Eaton Intelligent Power Limited Changeover switch

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