TWI405921B - Vacuum valve - Google Patents
Vacuum valve Download PDFInfo
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- TWI405921B TWI405921B TW099111366A TW99111366A TWI405921B TW I405921 B TWI405921 B TW I405921B TW 099111366 A TW099111366 A TW 099111366A TW 99111366 A TW99111366 A TW 99111366A TW I405921 B TWI405921 B TW I405921B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
本發明係關於一種真空閥,係使使用於真空斷電器的開關接點所具有之切斷性能提升。The present invention relates to a vacuum valve which improves the cutting performance of a switch contact for a vacuum breaker.
真空閥由下述元件構成:以陶瓷或玻璃之類的絕緣物作為材質,在高真空(high vacuum)下保持氣密的圓筒狀真空容器;於真空容器兩端以互相相對向的方式所設置的可分離接觸之一對電極;以及以將這些電極包圍的方式設於真空容器內的電弧屏(arc shield)。真空閥於電流切斷時,扮演著將伴隨著電極的分離而於電極間所發生的電弧予以消弧的角色。The vacuum valve is composed of an insulator such as ceramic or glass, which is a gas-tight cylindrical vacuum container under high vacuum; and is opposed to each other at both ends of the vacuum container. a pair of electrodes that are separable in contact; and an arc shield that is disposed in the vacuum vessel in such a manner as to surround the electrodes. When the current is cut off, the vacuum valve acts to extinguish the arc that occurs between the electrodes with the separation of the electrodes.
然而,此電弧若於局部持續地產生,則電極將局部地熔融,電極將受到損傷。為了避免此情形,提出有一種方法,其係將線圈(coil)設於其間,透過線圈而產生的縱向磁場,使電流切斷時所產生的電弧在電極的徑向內廣範圍地擴散,抑制因電弧所產生的金屬蒸汽及荷電粒子,以提升切斷性能,並抑制電極的熔融。However, if this arc is continuously generated locally, the electrode will locally melt and the electrode will be damaged. In order to avoid this, there is proposed a method in which a coil is disposed between the coil and a longitudinal magnetic field generated by the coil, so that an arc generated when the current is cut is widely spread in the radial direction of the electrode, suppressing The metal vapor and charged particles generated by the arc enhance the cutting performance and suppress the melting of the electrode.
做為使具備有線圈的真空閥的切斷性能進一步提升的方法者,例如於專利文獻1所示之真空閥,係於電弧電極的圓周方向以預定的角度朝交叉的方向形成溝槽,並於此溝槽內嵌設帶絕緣性的嵌合體。藉此,絕緣回復電壓變高,而提高了電壓額定值(voltage rating)。且,因於嵌合體的線圈電極側形成有較溝槽的寬度更大的絕緣性寬幅部,嵌合體不容易從電弧電極脫落,而提升了機械上的可靠性。As a method of further improving the cutting performance of the vacuum valve having the coil, for example, the vacuum valve disclosed in Patent Document 1 forms a groove in a circumferential direction at a predetermined angle in the circumferential direction of the arc electrode, and An insulating fitting is embedded in the groove. Thereby, the insulation recovery voltage becomes high, and the voltage rating is increased. Further, since the insulating electrode having a larger width than the groove is formed on the coil electrode side of the fitting body, the fitting body is less likely to fall off from the arc electrode, and the mechanical reliability is improved.
且,做為進一步提升具有線圈的真空閥的切斷性能之方法者,例如於專利文獻2所示之真空閥中,在杯狀的溝槽電極於外周側形成有對通電軸的軸方向斜向橫切的複數條溝槽。即使電極間的距離變寬,亦可產生高縱向磁場,而提升了切斷性能。Further, as a method of further improving the cutting performance of the vacuum valve having a coil, for example, in the vacuum valve disclosed in Patent Document 2, the cup-shaped groove electrode is formed on the outer peripheral side with an oblique direction to the axial direction of the energizing shaft. A plurality of grooves that are transversely cut. Even if the distance between the electrodes is widened, a high longitudinal magnetic field can be generated, and the cutting performance is improved.
(專利文獻)(Patent Literature)
專利文獻1:日本特開2002-150902號公報Patent Document 1: Japanese Laid-Open Patent Publication No. 2002-150902
專利文獻2:日本特開2008-135338號公報Patent Document 2: Japanese Laid-Open Patent Publication No. 2008-135338
然而,專利文獻1及專利文獻2所示之真空閥,有下述問題點:其線圈僅設於電弧電極和接點(相當於本申請案之接點,以下簡稱為「接點」)的外周部,所產生的磁場並不一定均勻地形成於接點整體,所產生的電弧不會充分的分散於接點整體,而限制了切斷性能。However, the vacuum valves disclosed in Patent Document 1 and Patent Document 2 have the following problems: the coils are provided only in the arc electrodes and the contacts (corresponding to the contacts of the present application, hereinafter referred to as "contacts"). In the outer peripheral portion, the generated magnetic field is not necessarily uniformly formed on the entire contact, and the generated arc is not sufficiently dispersed in the entire joint, and the cutting performance is limited.
本發明係為了解決前述問題所研創者,目的為提供可提升接點分離時所產生的磁場的均勻性,而提升切斷性能的真空閥。The present invention has been made in order to solve the aforementioned problems, and an object thereof is to provide a vacuum valve which can improve the uniformity of a magnetic field generated at the time of contact separation and improve the cutting performance.
為解決上述問題,本發明的真空閥特徵在於具有:以可分離接觸之方式收容於保持在真空的真空容器內的一對接點、連接於接點並以同心圓狀設置之不同外徑之複數個杯狀的線圈電極、以及固定複數個線圈電極並通電的電極棒。In order to solve the above problems, the vacuum valve of the present invention is characterized in that it has a pair of contacts which are detachably contacted in a vacuum container held in a vacuum, and a plurality of different outer diameters which are connected to the contacts and are arranged concentrically. A cup-shaped coil electrode, and an electrode rod that fixes a plurality of coil electrodes and is energized.
根據本發明,線圈不僅是設於接點的外周部,亦設於內周部,提升了磁場的均勻性,藉此使產生的電弧分散至接點整體,取得了可顯著地提升切斷性能的效果。According to the present invention, the coil is provided not only at the outer peripheral portion of the contact but also at the inner peripheral portion, thereby improving the uniformity of the magnetic field, thereby dispersing the generated arc to the entire joint, and achieving a remarkable improvement in the cutting performance. Effect.
以下,依據第1圖至第10圖,說明關於本發明之實施形態的真空閥之可動電極。Hereinafter, a movable electrode of a vacuum valve according to an embodiment of the present invention will be described with reference to Figs. 1 to 10 .
第1圖為第一實施形態的真空閥之可動電極及固定電極的側面圖。第2圖為可動電極之構造圖、第2圖(a)為可動電極的分解斜視圖、第2圖(b)為線圈電極的俯視圖。且,第3圖為表示由線圈電極所產生的圓周方向之磁場分佈圖。Fig. 1 is a side view showing a movable electrode and a fixed electrode of a vacuum valve according to a first embodiment. Fig. 2 is a structural view of a movable electrode, Fig. 2(a) is an exploded perspective view of the movable electrode, and Fig. 2(b) is a plan view of the coil electrode. Further, Fig. 3 is a view showing a magnetic field distribution in the circumferential direction generated by the coil electrodes.
如第1圖所示,真空閥雖係由收容於保持在真空的真空容器內之一對可動電極1及固定電極11所構成,然因構造相同,故於此僅對可動電極1的構造作說明。於第2圖中,元件符號1係可動電極,該可動電極係由以下構件所構成:接點2、同心圓狀地設置且連接於該接點2杯狀的外周線圈電極3及內周線圈電極4、連接外周線圈電極3及內周線圈電極4並將電流取出至真空容器(未圖示)外的電極棒5、用以補強接點2的補強材料6、以及為了將外周線圈電極3及內周線圈電極4予以絕緣而插入之絕緣環7。As shown in Fig. 1, the vacuum valve is constituted by one of the movable electrode 1 and the fixed electrode 11 housed in a vacuum container held in a vacuum, and since the structure is the same, only the structure of the movable electrode 1 is used here. Description. In Fig. 2, the component symbol 1 is a movable electrode, and the movable electrode is composed of a contact 2, a peripheral coil electrode 3 and an inner circumference coil which are concentrically arranged and connected to the contact 2 cup shape. The electrode 4, the electrode rod 5 connecting the outer peripheral coil electrode 3 and the inner peripheral coil electrode 4 and taking out a current to a vacuum container (not shown), the reinforcing material 6 for reinforcing the contact 2, and the outer peripheral coil electrode 3 And the insulating ring 7 into which the inner circumferential coil electrode 4 is insulated and inserted.
外周線圈電極3係由下述構件所構成:由位於杯狀的側面3a之相對於可動電極1的軸方向1a平行設置的溝槽3b所分割,並由從杯狀的底部向外周分歧的輪輻部3c所連接而在圓周方向形成圓弧狀通電路的線圈部3d;連接於接點2的端子部3e;及與電極棒5的嵌合部5a嵌合並固設的嵌合孔3f。內周線圈電極4也與外周線圈電極3相同,係由下述構件所構成:被位於杯狀的側面4a之相對於軸方向1a平行設置的溝槽4b所分割,並由從杯狀的底部向外周分歧的輪輻部3c所連接而在圓周方向形成圓弧狀通電路的線圈部4d;連接於接點2的端子部4e;及與電極棒5的嵌合部5b嵌合並固設的嵌合孔4f。The outer peripheral coil electrode 3 is composed of a member which is divided by a groove 3b which is disposed in parallel with the axial direction 1a of the movable electrode 1 on the side surface 3a of the cup shape, and which is branched from the bottom of the cup to the outer circumference. The coil portion 3d that is connected to the portion 3c and has an arc-shaped through circuit in the circumferential direction; the terminal portion 3e that is connected to the contact 2; and the fitting hole 3f that is fitted to and fixed to the fitting portion 5a of the electrode rod 5. Similarly to the outer peripheral coil electrode 3, the inner circumferential coil electrode 4 is composed of a member which is divided by a groove 4b which is disposed in parallel with the axial direction 1a of the cup-shaped side surface 4a, and which is divided from the bottom of the cup shape. a coil portion 4d that is connected to the spoke portion 3c that is different in the outer circumference and that has an arc-shaped through circuit in the circumferential direction; a terminal portion 4e that is connected to the contact 2; and a fitting that is fitted and fixed to the fitting portion 5b of the electrode rod 5. Hole 4f.
又,因複數個外周線圈電極3及內周線圈電極4的嵌合孔3f,4f之口徑係各個依順序改變,所對應的電極棒5的嵌合部5a,5b的外徑也依序配合而變更,故可將各個的外周線圈電極3及內周線圈電極4固定於預定的位置上。Further, since the diameters of the fitting holes 3f and 4f of the plurality of outer circumferential coil electrodes 3 and the inner circumferential coil electrodes 4 are sequentially changed, the outer diameters of the fitting portions 5a and 5b of the corresponding electrode rods 5 are also sequentially matched. With the change, each of the outer circumference coil electrode 3 and the inner circumference coil electrode 4 can be fixed at a predetermined position.
於此,係配置成使屬於外周線圈電極3的通電路之線圈部3d的位置、與屬於內周線圈電極4的通電路之線圈部4d的位置於圓周方向為相異的位置。Here, the position of the coil portion 3d of the through-circuit belonging to the outer circumferential coil electrode 3 and the position of the coil portion 4d of the through-circuit belonging to the inner circumferential coil electrode 4 are arranged at positions different from each other in the circumferential direction.
且,補強材料6係藉由突起部6a與電極棒5的嵌合孔5c而被嵌合並固設,並與接點2的背面接觸,而由背面支撐接點2以作為補強。接點2、外周線圈電極3、內周線圈電極4及電極棒5係由電阻較低的銅系材料所構成,補強材料6則係由電阻較高的不鏽鋼系的金屬或絕緣體所構成。Further, the reinforcing material 6 is fitted and fixed by the fitting portion 5a of the protruding portion 6a and the electrode rod 5, and is in contact with the back surface of the contact 2, and the contact 2 is supported by the back surface as reinforcement. The contact 2, the outer circumferential coil electrode 3, the inner circumferential coil electrode 4, and the electrode rod 5 are made of a copper-based material having a low electric resistance, and the reinforcing material 6 is made of a stainless steel-based metal or insulator having a high electric resistance.
接著,參照第1圖至第3圖說明關於第一實施形態之真空閥的運作。又,本發明的主體係由可動電極及固定電極所構成,故省略驅動可動電極的說明。Next, the operation of the vacuum valve according to the first embodiment will be described with reference to Figs. 1 to 3 . Further, since the main system of the present invention is composed of a movable electrode and a fixed electrode, the description of driving the movable electrode will be omitted.
關於第一實施形態之真空閥,通常於通電時電流係由固定電極11的電極棒15,經過外周線圈電極13、內周線圈電極14及接點12,從可動電極1的接點2流向外周線圈電極3及內周線圈電極4,並進一步流向電極棒5。當使可動電極1後退而切斷電流時,可動電極1的接點2由固定電極11的接點12分離,而於接點2與接點12之間產生電弧。由電弧產生的電流,在朝徑向流通於接點2之後,由端子部3e及端子部4e流向外周線圈電極3及內周線圈電極4的線圈部3d及線圈部4d,並通過輪輻部3c及輪輻部4c流向電極棒5。此時,由於線圈部3d及線圈部4d係形成為圓弧狀而使電流在圓周方向流動,故產生相對於可動電極1的軸方向1a平行的縱向磁場。絕緣環7係為了避免因外周線圈電極3與內周線圈電極4的線圈部3d及線圈部4d接觸而打亂磁場分佈而插入者。In the vacuum valve according to the first embodiment, the current is normally supplied from the electrode rod 15 of the fixed electrode 11 through the outer peripheral coil electrode 13, the inner circumferential coil electrode 14, and the contact 12, and flows from the contact 2 of the movable electrode 1 to the outer periphery. The coil electrode 3 and the inner circumferential coil electrode 4 further flow to the electrode rod 5. When the movable electrode 1 is retracted and the current is cut off, the contact 2 of the movable electrode 1 is separated by the contact 12 of the fixed electrode 11, and an arc is generated between the contact 2 and the contact 12. The current generated by the arc flows through the contact portion 2 in the radial direction, and flows from the terminal portion 3e and the terminal portion 4e to the coil portion 3d and the coil portion 4d of the outer circumferential coil electrode 3 and the inner circumferential coil electrode 4, and passes through the spoke portion 3c. The spoke portion 4c flows to the electrode rod 5. At this time, since the coil portion 3d and the coil portion 4d are formed in an arc shape and current flows in the circumferential direction, a longitudinal magnetic field parallel to the axial direction 1a of the movable electrode 1 is generated. The insulating ring 7 is inserted in order to prevent the magnetic field distribution from being disturbed by the contact between the outer coil electrode 3 and the coil portion 3d and the coil portion 4d of the inner circumferential coil electrode 4.
第3圖係示意由線圈電極所產生的圓周方向之磁場分佈與習知例的比較圖。磁通量密度B係沿第2圖(b)的箭號方向L測定所得者,於第3圖中,T係由習知的線圈電極所產生的磁通量密度,C則是第一實施形態的外周線圈電極3及內周線圈電極4的複合線圈電極所產生的磁通量密度。外周線圈電極3的端子部3e的位置、與內周線圈電極4的端子部4e的位置,係以在圓周方向L成為相異位置的方式予以配置,故相較於單一線圈電極的情形,由複合線圈電極所產生的磁場之圓周方向之磁場分佈大幅地得到改善,而得到更佳提升均勻性的結果,由於電弧在接點的範圍內受到會聚,並且會向接點2的整體擴散,而阻礙其往局部集中,可保護接點2不受損傷。Fig. 3 is a view showing a comparison of a magnetic field distribution in the circumferential direction generated by a coil electrode with a conventional example. The magnetic flux density B is measured along the arrow direction L of Fig. 2(b). In Fig. 3, T is the magnetic flux density generated by a conventional coil electrode, and C is the outer circumference coil of the first embodiment. The magnetic flux density generated by the composite coil electrode of the electrode 3 and the inner circumferential coil electrode 4. The position of the terminal portion 3e of the outer circumferential coil electrode 3 and the position of the terminal portion 4e of the inner circumferential coil electrode 4 are arranged so as to be different from each other in the circumferential direction L. Therefore, compared with the case of the single coil electrode, The magnetic field distribution in the circumferential direction of the magnetic field generated by the composite coil electrode is greatly improved, and as a result of better uniformity of the lift, the arc is concentrated in the range of the contact and diffuses toward the entirety of the contact 2, Blocking it to local concentration can protect the joint 2 from damage.
又,透過於外周線圈電極3及內周線圈電極4之間設置間隙可省略絕緣環7。且,亦可於內周線圈電極的杯狀的外側面、或於外周線圈電極的杯狀內側面鍍上絕緣膜以取代絕緣環7。即使線圈電極彼此間接觸,雖會使磁場的均勻性下降,但仍會發揮效果。Further, the insulating ring 7 can be omitted by providing a gap between the outer circumferential coil electrode 3 and the inner circumferential coil electrode 4. Further, instead of the insulating ring 7, an insulating film may be plated on the outer surface of the inner circumference of the coil electrode or the inner surface of the outer circumference of the coil electrode. Even if the coil electrodes are in contact with each other, the uniformity of the magnetic field is lowered, but the effect is still exerted.
以第一實施形態的線圈電極的製造方法而言,可動電極1及固定電極11係由複數個線圈電極組合所構成,且各個線圈電極的厚度亦可為較薄者,故將板材透過衝壓加工的方法是有效的。第4圖係示意線圈電極透過衝壓加工法之製造方法。首先,對平板10(第4圖(a))進行衝切掉嵌合孔3f及形成線圈部3d以外的部分之加工(第4圖(b)),接著,透過擠壓加工形成側面3a,而加工成杯狀(第4圖(c))。然後,將外徑相異的線圈電極3,4組合,以製造目標的複合線圈電極(第4圖(d))。於此,係示意外周線圈電極3及內周線圈電極4的線圈部3d及線圈部4d於圓周方向位於同位置的狀況。此外,於第4圖中雖未圖示絕緣環7,然將配合需要而插設。藉由從棒材利用切削加工的方法來製作時,這種複雜的加工法較為困難且需較高的製造成本,然藉由使用衝壓加工之方法來製作時,可藉由組合複數個線圈更低成本地製造複合線圈電極。In the method of manufacturing the coil electrode according to the first embodiment, the movable electrode 1 and the fixed electrode 11 are composed of a plurality of coil electrode combinations, and the thickness of each of the coil electrodes may be thin, so that the plate is subjected to press working. The method is effective. Fig. 4 is a view showing a manufacturing method of a coil electrode through a press working method. First, the flat plate 10 (Fig. 4(a)) is subjected to a process of punching out the fitting hole 3f and forming a portion other than the coil portion 3d (Fig. 4(b)), and then forming a side surface 3a by extrusion processing. It is processed into a cup shape (Fig. 4(c)). Then, the coil electrodes 3, 4 having different outer diameters are combined to manufacture a target composite coil electrode (Fig. 4 (d)). Here, the state in which the coil portion 3d and the coil portion 4d of the outer circumferential coil electrode 3 and the inner circumferential coil electrode 4 are at the same position in the circumferential direction is shown. In addition, although the insulating ring 7 is not shown in FIG. 4, it is inserted in the cooperation. When it is produced by a cutting process from a bar, such a complicated machining method is difficult and requires a high manufacturing cost, and by using a press working method, it is possible to combine a plurality of coils by combining a plurality of coils. The composite coil electrode is manufactured at low cost.
如此,在第一實施形態之真空閥中,在杯狀側面相對於軸方向設有平行的溝槽,且將在圓周方向形成有圓弧狀通電路的外徑相異的複數個杯狀線圈電極以同心圓狀的方式配置,使其產生磁場,藉此,即具有可以改善電弧產生時所產生的圓周方向磁場分佈的均勻性,阻止電弧集中於局部,進而保護接點免於損傷,並可提升切斷性能的顯著效果。As described above, in the vacuum valve according to the first embodiment, the cup-shaped side surface is provided with parallel grooves in the axial direction, and a plurality of cup-shaped coils having different outer diameters of the arc-shaped through-circuit are formed in the circumferential direction. The electrodes are arranged in a concentric manner to generate a magnetic field, thereby improving the uniformity of the circumferential magnetic field distribution generated when the arc is generated, preventing the arc from being concentrated locally, thereby protecting the contacts from damage, and It can improve the remarkable effect of cutting performance.
第5圖係示意第二實施形態之真空閥的可動電極的構造分解斜視圖。於第5圖中,元件符號21係為可動電極,可動電極係由下述構件構成:接點22;與該接點2連接而配置成同心圓狀的杯狀外周線圈電極23及內周線圈電極24;與外周線圈電極23及內周線圈電極24連接,將電流引出真空容器(未圖示)之外的電極棒25;補強接點22的補強材料26;以及為絕緣外周線圈電極23及內周線圈電極24而插入的絕緣環27。Fig. 5 is a perspective exploded view showing the structure of a movable electrode of the vacuum valve of the second embodiment. In Fig. 5, the component symbol 21 is a movable electrode, and the movable electrode is composed of a contact 22; a cup-shaped outer peripheral coil electrode 23 and an inner peripheral coil which are connected to the contact 2 and arranged concentrically. The electrode 24 is connected to the outer circumferential coil electrode 23 and the inner circumferential coil electrode 24, and draws current from the electrode rod 25 other than the vacuum container (not shown); the reinforcing material 26 of the reinforcing contact 22; and the insulating outer circumferential coil electrode 23 and The insulating ring 27 is inserted into the inner circumferential coil electrode 24.
外周線圈電極23係由下述構件所構成:藉由在杯狀側面23a相對於可動電極21之軸方向21a斜向設置的溝槽23b,於圓周方向形成有圓弧狀的通電路的線圈部23d;連接於接點22的端子部23e;以及與電極棒25的嵌合部25a嵌合並固設之嵌合孔23f。內周線圈電極24也與外周線圈電極23相同,由下述構件所構成:藉由在杯狀側面24a相對於軸方向21a斜向設置的溝槽24b,於圓周方向形成有圓弧狀的通電路的線圈部24d;連接於接點22的端子部24e;以及與電極棒25的嵌合部25b嵌合並固設之嵌合孔24f。The outer peripheral coil electrode 23 is composed of a member in which a coil portion of an arc-shaped through circuit is formed in the circumferential direction by a groove 23b which is provided obliquely with respect to the axial direction 21a of the movable electrode 21 in the cup-shaped side surface 23a. 23d; a terminal portion 23e connected to the contact 22; and a fitting hole 23f fitted to the fitting portion 25a of the electrode rod 25 and fixed. Similarly to the outer peripheral coil electrode 23, the inner circumferential coil electrode 24 is formed of a member in which an arcuate passage is formed in the circumferential direction by a groove 24b which is provided obliquely with respect to the axial direction 21a in the cup-shaped side surface 24a. The coil portion 24d of the circuit; the terminal portion 24e connected to the contact 22; and the fitting hole 24f fitted to the fitting portion 25b of the electrode rod 25 and fixed.
於此,作為外周線圈電極23的通電路之線圈部23d的位置、與作為內周線圈電極24的通電路之線圈部24d的位置係以在圓周方向成為不同角度的方式配置。Here, the position of the coil portion 23d of the through-circuit as the outer coil electrode 23 and the position of the coil portion 24d of the through-circuit as the inner circumferential coil electrode 24 are arranged at different angles in the circumferential direction.
且,補強材料26係藉由突起部26a與電極棒25的嵌合孔25c而被嵌合並固設,並與接點22的背面接觸,而由背面支撐接點22以作為補強。同於第一實施形態,接點22、外周線圈電極23、內周線圈電極24及電極棒25係由電阻低的銅系材料所構成,補強材料26則係由電阻較高的不鏽鋼系的金屬或絕緣體所構成。Further, the reinforcing material 26 is fitted and fixed by the fitting portion 25a of the projection 26a and the electrode rod 25, and is in contact with the back surface of the contact 22, and the contact 22 is supported by the back surface as reinforcement. In the same manner as the first embodiment, the contact 22, the outer circumferential coil electrode 23, the inner circumferential coil electrode 24, and the electrode rod 25 are made of a copper-based material having a low electric resistance, and the reinforcing material 26 is made of a stainless steel-based metal having a high electric resistance. Or an insulator.
接著,參照第5圖說明關於第二實施形態之真空閥的運作。Next, the operation of the vacuum valve according to the second embodiment will be described with reference to Fig. 5.
第二實施形態之真空閥係當使可動電極21後退而切斷電流時,可動電極21由固定電極(未圖示)分離,而於接點22與固定電極之間產生電弧。由電弧產生的電流,在朝徑向流通於接點22之後,由端子部23e及端子部24e流向外周線圈電極23及內周線圈電極24的線圈部23d及線圈部24d,並通過外周線圈電極23及內周線圈電極24的底部流向電極棒25。此時,藉由在杯狀的外周線圈電極23及內周線圈電極24的側面23a及側面24a所斜向地設置的溝槽23b及溝槽24b所形成的線圈部23d及線圈部24d係形成為圓弧狀,電流係沿著圓周方向斜向流動,故產生有相對於電極棒25的軸方向21a平行的縱向磁場。In the vacuum valve of the second embodiment, when the movable electrode 21 is retracted and the current is cut off, the movable electrode 21 is separated by a fixed electrode (not shown), and an arc is generated between the contact 22 and the fixed electrode. The current generated by the arc flows through the contact portion 22 in the radial direction, and flows from the terminal portion 23e and the terminal portion 24e to the coil portion 23d and the coil portion 24d of the outer circumferential coil electrode 23 and the inner circumferential coil electrode 24, and passes through the outer peripheral coil electrode. 23 and the bottom of the inner circumference coil electrode 24 flow toward the electrode rod 25. At this time, the coil portion 23d and the coil portion 24d formed by the grooves 23b and the grooves 24b which are provided obliquely on the side surface 23a and the side surface 24a of the cup-shaped outer circumferential coil electrode 23 and the inner circumferential coil electrode 24 are formed. In the case of an arc shape, the current flows obliquely in the circumferential direction, so that a longitudinal magnetic field parallel to the axial direction 21a of the electrode rod 25 is generated.
外周線圈電極23的線圈部23d之位置、與內周線圈電極24的線圈部24d的位置,係以使在圓周方向成為不同的位置之方式配置,故與單一線圈電極的情況相比,由複數個線圈電極所產生的磁場有改善圓周方向磁場分佈、並得到更佳提升均勻性的結果,由於電弧在接點的範圍內受到會聚,並且會向接點22的整體擴散,而阻礙其往局部集中,並可保護接點22不受損傷。The position of the coil portion 23d of the outer circumferential coil electrode 23 and the position of the coil portion 24d of the inner circumferential coil electrode 24 are arranged so as to be different in the circumferential direction. Therefore, compared with the case of a single coil electrode, The magnetic field generated by the coil electrodes has the effect of improving the magnetic field distribution in the circumferential direction and obtaining better uniformity of uniformity. Since the arc is concentrated in the range of the contacts, and spreads to the entirety of the contacts 22, it hinders the localization. Concentrate and protect the contacts 22 from damage.
以第二實施形態的線圈電極的製造方法而言,與第一實施形態相同,故將板材透過衝壓加工的方法是有效的。第6圖係示意線圈電極透過衝壓加工法之製造方法。首先,對平板10(第6圖(a))進行嵌合孔23f及溝槽23b的衝切加工(第6圖(b)),接著,透過擠壓加工形成側面23a,而加工成杯狀(第6圖(c))。此外,將外徑相異的線圈電極22、線圈電極23組合,以製造目標的複合線圈電極(第6圖(d))。絕緣環27係配合需要而插入。Since the method of manufacturing the coil electrode of the second embodiment is the same as that of the first embodiment, it is effective to pass the sheet material through the press working method. Fig. 6 is a view showing a manufacturing method of a coil electrode through a press working method. First, the flat plate 10 (Fig. 6(a)) is subjected to punching processing (Fig. 6(b)) of the fitting hole 23f and the groove 23b, and then the side surface 23a is formed by extrusion processing, and processed into a cup shape. (Fig. 6(c)). Further, the coil electrode 22 and the coil electrode 23 having different outer diameters are combined to manufacture a target composite coil electrode (Fig. 6(d)). The insulating ring 27 is inserted as needed.
如此,在第二實施形態之真空閥中,係將於杯狀的側面相對於軸方向斜向設有溝槽而於圓周方向形成有圓弧狀通電路的外徑相異之複數個杯狀線圈電極配置成同心圓狀,以使在複數個線圈電極產生磁場,藉此與第一實施形態相同,可改善電弧產生時所產生的圓周方向的磁場分佈的均勻性,並阻礙電弧局部地集中,保護接點不受損傷,而有可提升切斷性能的顯著效果。In the vacuum valve according to the second embodiment, the cup-shaped side surface is provided with a groove obliquely to the axial direction, and the outer diameter of the arc-shaped through circuit is formed in the circumferential direction. The coil electrodes are arranged concentrically so as to generate a magnetic field at a plurality of coil electrodes, thereby improving the uniformity of the magnetic field distribution in the circumferential direction generated when the arc is generated, and preventing the local concentration of the arc locally, as in the first embodiment. The protection contact is not damaged, but has a remarkable effect of improving the cutting performance.
第7圖係可動電極的構造圖,第7圖(a)係可動電極的分解斜視圖,第7圖(b)係為線圈電極的俯視圖。且,第8圖為由線圈電極所產生的直徑方向之磁場分佈示意圖。Fig. 7 is a structural view of a movable electrode, Fig. 7(a) is an exploded perspective view of the movable electrode, and Fig. 7(b) is a plan view of the coil electrode. Moreover, Fig. 8 is a schematic view showing the distribution of the magnetic field in the diameter direction generated by the coil electrode.
第三實施形態之真空閥係如同第7圖所示,除了在以同心圓狀配置的杯狀外周線圈電極3及內周線圈電極4之間設置有間隙d之點、及省略了絕緣環7之點以外,係與第一實施形態的第1圖相同,故省略關於其他構成要素的說明。As shown in Fig. 7, the vacuum valve of the third embodiment is provided with a gap d between the cup-shaped outer peripheral coil electrode 3 and the inner peripheral coil electrode 4 arranged concentrically, and the insulating ring 7 is omitted. Other than the point of the first embodiment, the description of the other components is omitted.
於此,外周線圈電極3之作為通電路的線圈部3d的位置,與內周線圈電極4之作為通電路的線圈部4d的位置,係以於圓周方向使成為不同位置的方式配置。Here, the position of the coil portion 3d serving as the through circuit of the outer circumference coil electrode 3 and the position of the coil portion 4d serving as the through circuit of the inner circumference coil electrode 4 are arranged so as to be at different positions in the circumferential direction.
接著,參照第7圖說明關於第三實施形態之真空閥的運作。Next, the operation of the vacuum valve according to the third embodiment will be described with reference to Fig. 7.
第三實施形態之真空閥亦與第一實施形態相同,在切斷電流的狀況,可動電極1的接點2係與固定電極11的接點12分離,而於接點2與接點12之間產生電弧。由電弧產生的電流,在朝向徑向流通於接點2之後,由端子部3e及端子部4e流向外周線圈電極3及內周線圈電極4的線圈部3d及線圈部4d,並通過輪輻部3c及輪輻部4c流向電極棒5。此時,線圈部3d及線圈部4d係形成為圓弧狀,使電流在圓周方向流動,故產生相對於可動電極1的軸方向1a平行的縱向磁場。The vacuum valve of the third embodiment is also the same as that of the first embodiment. The contact 2 of the movable electrode 1 is separated from the contact 12 of the fixed electrode 11 in the state of cutting off the current, and is connected to the contact 2 and the contact 12 An arc is generated. The current generated by the arc flows into the contact portion 2 in the radial direction, and then flows from the terminal portion 3e and the terminal portion 4e to the coil portion 3d and the coil portion 4d of the outer circumferential coil electrode 3 and the inner circumferential coil electrode 4, and passes through the spoke portion 3c. The spoke portion 4c flows to the electrode rod 5. At this time, the coil portion 3d and the coil portion 4d are formed in an arc shape, and a current flows in the circumferential direction, so that a longitudinal magnetic field parallel to the axial direction 1a of the movable electrode 1 is generated.
第8圖係示意由第三實施形態的複合線圈電極所產生的圓周方向之磁場分佈與習知例的比較圖。磁通量密度B係沿第7圖(b)的箭號的徑向方向R測定所得,T係由習知的線圈電極所產生的磁通量密度,C則是第三實施形態的外周線圈電極3及內周線圈電極4所成的複合線圈電極所產生的磁通量密度。相較於外周線圈電極3外徑較小的內周線圈電極4係配置為設有間隙d,故由複合線圈電極所產生的磁場,相較於單一線圈電極的情況,徑向方向的磁場分佈得到改善,並得到更佳提升均勻性的結果,由於電弧在接點的範圍內受到會聚,並且會向接點2的整體擴散,而阻礙其往局部集中,可保護接點2不受損傷。Fig. 8 is a view showing a comparison of a magnetic field distribution in the circumferential direction generated by the composite coil electrode of the third embodiment with a conventional example. The magnetic flux density B is measured along the radial direction R of the arrow of Fig. 7(b), T is the magnetic flux density generated by a conventional coil electrode, and C is the outer peripheral coil electrode 3 and the inside of the third embodiment. The magnetic flux density generated by the composite coil electrode formed by the circumferential coil electrode 4. The inner circumferential coil electrode 4 having a smaller outer diameter than the outer circumferential coil electrode 3 is disposed with the gap d, so that the magnetic field generated by the composite coil electrode is distributed in the radial direction compared to the case of the single coil electrode. As a result of the improvement and better uniformity of the lifting, the arc 2 is protected from being damaged by the fact that the arc is concentrated in the range of the contact and spreads to the entirety of the joint 2, thereby preventing it from being concentrated locally.
如此,第三實施形態之真空閥係將於圓周方向形成有圓弧狀通電路的相異外徑的複數個同心圓狀的杯狀線圈電極之間以設有間隙的方式同心圓狀地配置,以產生磁場,故可改善電弧產生時所產生的徑向方向的磁場分佈的均勻性,阻礙電弧局部地集中,保護接點不受損傷,而具有可提升切斷性能的顯著效果。In this way, the vacuum valve of the third embodiment is arranged concentrically with a plurality of concentric circular cup-shaped coil electrodes having different outer diameters of the arc-shaped through-circuit in the circumferential direction so as to have a gap therebetween. In order to generate a magnetic field, it is possible to improve the uniformity of the magnetic field distribution in the radial direction generated when the arc is generated, to prevent the arc from being locally concentrated, to protect the joint from damage, and to have a remarkable effect of improving the cutting performance.
又,於上述之實施形態中,複合線圈電極雖以為由外周線圈電極及內周線圈電極之兩個線圈電極所構成的情況做敘述,然亦可為由三個以上的線圈電極所構成的情況,且,各個的線圈電極板的厚度亦可為不同。Further, in the above-described embodiment, the composite coil electrode is constituted by two coil electrodes of the outer circumference coil electrode and the inner circumference coil electrode, and may be composed of three or more coil electrodes. Moreover, the thickness of each coil electrode plate may be different.
且,於實施形態中,外周線圈電極及內周線圈電極的各個電極的分歧數(線圈的數目)雖以三個的情況作為說明,然如第9圖所示,亦可為各個的線圈電極分歧數不同的情況,而可調整磁場分佈。第9圖(a)係示意關於對應第一實施形態、第9圖(b)係示意對應第三實施形態的複數個線圈電極的分歧數為不同的其他實施形態。尤其是,外周線圈電極的分歧數較內周線圈電極的分歧數為多的情況,對於磁場的均勻性的改善係屬有效。Further, in the embodiment, the number of divergence (the number of coils) of each of the outer circumferential coil electrode and the inner circumferential coil electrode is described as three. However, as shown in FIG. 9, each coil electrode may be used. The difference in the number of divergence can be adjusted to adjust the magnetic field distribution. Fig. 9(a) is a view showing another embodiment in which the number of divergences of the plurality of coil electrodes corresponding to the third embodiment is different depending on the first embodiment and the ninth figure (b). In particular, when the number of divergences of the outer peripheral coil electrode is larger than the number of divergence of the inner peripheral coil electrode, it is effective to improve the uniformity of the magnetic field.
且,於實施形態中,外周線圈電極的線圈電極的位置,與內周線圈電極的線圈電極的位置,雖以使其配置為對圓周方向不同的位置的情況進行說明,然第10圖係為顯示對應第一實施形態之外周線圈電極3的線圈部3d的位置,與內周線圈電極4的線圈部4d的位置相對於圓周方向為同一位置的其他實施態樣。即使複數個線圈部位於圓周方向的同一位置,也可期待徑向方向的磁場的改善效果。Further, in the embodiment, the position of the coil electrode of the outer circumferential coil electrode and the position of the coil electrode of the inner circumferential coil electrode are arranged such that they are arranged at positions different in the circumferential direction, but the tenth figure is The position corresponding to the position of the coil portion 3d of the outer circumferential coil electrode 3 of the first embodiment and the position of the coil portion 4d of the inner circumferential coil electrode 4 at the same position with respect to the circumferential direction are displayed. Even if a plurality of coil portions are located at the same position in the circumferential direction, the effect of improving the magnetic field in the radial direction can be expected.
且,準備容許負荷電流不同的線圈電極,將該等予以組合,藉此可提供具有各式各樣的容許負荷電流的真空閥。Further, coil electrodes having different load currents are prepared, and these are combined to provide a vacuum valve having various types of allowable load currents.
且,本發明並不限於上述的實施形態,當然亦包含上述可能的組合。Further, the present invention is not limited to the above-described embodiments, and of course, the above possible combinations are also included.
且,於圖中的同一元件符號,係示意同樣的或相當的部分。In the figures, the same reference numerals are used to refer to the same or equivalent parts.
1,21...可動電極1,21. . . Movable electrode
1a...軸方向1a. . . Axis direction
2,12,22...接點2,12,22. . . contact
3,13,23...外周線圈電極3,13,23. . . Peripheral coil electrode
3a,23a,24a...側面3a, 23a, 24a. . . side
3b,4b,23b,24b...溝槽3b, 4b, 23b, 24b. . . Trench
3c,4c...輪輻部3c, 4c. . . Spoke
3d,4d,23d,24d...線圈部3d, 4d, 23d, 24d. . . Coil part
3e,4e,23e,24e...端子部3e, 4e, 23e, 24e. . . Terminal part
3f,4f,5c,23f,24f,25c...嵌合孔3f, 4f, 5c, 23f, 24f, 25c. . . Fitted hole
4,14,24...內周線圈電極4,14,24. . . Inner circumference coil electrode
5,15,25...電極棒5,15,25. . . Electrode rod
5a,5b,25a,25b...嵌合部5a, 5b, 25a, 25b. . . Mating part
6,26...補強材料6,26. . . Reinforcing material
6a,26a...突起部6a, 26a. . . Protrusion
7,27...絕緣環7,27. . . Insulation ring
10...平板10. . . flat
11...固定電極11. . . Fixed electrode
B,C,T...磁通量密度B, C, T. . . Magnetic flux density
第1圖係為第一實施形態的真空閥之可動電極及固定電極的側面圖。Fig. 1 is a side view showing a movable electrode and a fixed electrode of the vacuum valve of the first embodiment.
第2圖(a)及(b)係為第一實施形態的可動電極之構造圖。Fig. 2 (a) and (b) are structural views of the movable electrode of the first embodiment.
第3圖係為第一實施形態由複合線圈電極所產生的圓周方向之磁場分佈圖。Fig. 3 is a view showing a magnetic field distribution in the circumferential direction generated by the composite coil electrode in the first embodiment.
第4圖(a)至(d)係為第一實施形態的複合線圈電極透過衝壓加工法之製造方法。Fig. 4 (a) to (d) show a manufacturing method of the composite coil electrode through the press working method according to the first embodiment.
第5圖係為第二實施形態之可動電極的構造圖。Fig. 5 is a structural view showing a movable electrode of the second embodiment.
第6圖(a)至(d)係為第二實施形態之複合線圈電極透過衝壓加工法之製造方法。Fig. 6 (a) to (d) are manufacturing methods of the composite coil electrode through the press working method of the second embodiment.
第7圖(a)及(b)係為第三實施形態之可動電極的構造圖。Fig. 7 (a) and (b) are structural views of the movable electrode of the third embodiment.
第8圖係為第三實施形態由複合線圈電極所產生的徑向方向之磁場分佈圖。Fig. 8 is a magnetic field distribution diagram in the radial direction generated by the composite coil electrode in the third embodiment.
第9圖(a)及(b)係為在第一實施形態及第三實施形態的複數個線圈電極的分歧數目不同的情況中線圈電極的俯視圖。Fig. 9 (a) and (b) are plan views of the coil electrode in the case where the number of divisions of the plurality of coil electrodes in the first embodiment and the third embodiment is different.
第10圖係為第一實施形態的複數個線圈電極之線圈部的位置相對於圓周方向相同的情況中,線圈電極的俯視圖。Fig. 10 is a plan view showing the coil electrode in the case where the positions of the coil portions of the plurality of coil electrodes of the first embodiment are the same in the circumferential direction.
1...可動電極1. . . Movable electrode
2,12...接點2,12. . . contact
3,13...外周線圈電極3,13. . . Peripheral coil electrode
4,14...內周線圈電極4,14. . . Inner circumference coil electrode
5,15...電極棒5,15. . . Electrode rod
11...固定電極11. . . Fixed electrode
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/050496 WO2011086699A1 (en) | 2010-01-18 | 2010-01-18 | Vacuum bulb |
Publications (2)
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TW201126086A TW201126086A (en) | 2011-08-01 |
TWI405921B true TWI405921B (en) | 2013-08-21 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW099111366A TWI405921B (en) | 2010-01-18 | 2010-04-13 | Vacuum valve |
Country Status (6)
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JP (1) | JP5281171B2 (en) |
KR (1) | KR101401201B1 (en) |
CN (1) | CN102754175B (en) |
DE (1) | DE112010005149B4 (en) |
TW (1) | TWI405921B (en) |
WO (1) | WO2011086699A1 (en) |
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JP2015082412A (en) * | 2013-10-23 | 2015-04-27 | 三菱電機株式会社 | Vacuum valve |
CN104701065B (en) * | 2013-12-04 | 2017-02-15 | 沈阳工业大学 | Asymmetric coil-type rotating magnetic vacuum arc extinguishing chamber contact system |
JP6268031B2 (en) * | 2014-04-17 | 2018-01-24 | 株式会社東芝 | Vacuum valve |
DE102015202867A1 (en) * | 2015-02-18 | 2016-08-18 | Siemens Aktiengesellschaft | Contact device for a vacuum circuit breaker |
CN111668064B (en) * | 2019-03-05 | 2022-08-30 | 平高集团有限公司 | Vacuum arc-extinguishing chamber contact, vacuum arc-extinguishing chamber and vacuum circuit breaker |
CN111668063B (en) * | 2019-03-05 | 2022-04-12 | 平高集团有限公司 | Vacuum arc-extinguishing chamber and contact structure thereof |
CN111261447A (en) * | 2020-01-20 | 2020-06-09 | 北京京东方真空电器有限责任公司 | Vacuum arc-extinguishing chamber contact, vacuum arc-extinguishing chamber and vacuum circuit breaker |
CN111192777B (en) * | 2020-01-21 | 2022-03-25 | 上海电机学院 | Anti-arc contact |
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JP2003123600A (en) * | 2001-10-17 | 2003-04-25 | Toshiba Corp | Vacuum valve |
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2010
- 2010-01-18 CN CN201080061307.2A patent/CN102754175B/en active Active
- 2010-01-18 DE DE112010005149.6T patent/DE112010005149B4/en active Active
- 2010-01-18 KR KR1020127013429A patent/KR101401201B1/en active IP Right Grant
- 2010-01-18 WO PCT/JP2010/050496 patent/WO2011086699A1/en active Application Filing
- 2010-01-18 JP JP2011549832A patent/JP5281171B2/en active Active
- 2010-04-13 TW TW099111366A patent/TWI405921B/en active
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JPS5879927U (en) * | 1981-11-26 | 1983-05-30 | 株式会社東芝 | vacuum valve |
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Also Published As
Publication number | Publication date |
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DE112010005149T5 (en) | 2012-10-25 |
KR20120079154A (en) | 2012-07-11 |
CN102754175B (en) | 2014-11-05 |
KR101401201B1 (en) | 2014-05-28 |
DE112010005149B4 (en) | 2018-03-08 |
WO2011086699A1 (en) | 2011-07-21 |
TW201126086A (en) | 2011-08-01 |
CN102754175A (en) | 2012-10-24 |
JP5281171B2 (en) | 2013-09-04 |
JPWO2011086699A1 (en) | 2013-05-16 |
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