JP6501980B1 - Gas circuit breaker - Google Patents

Abstract

  A plurality of capacitor devices (4) formed by electrically connecting a plurality of capacitor elements (7) in series are disposed along the circumferential direction on the outer peripheral portion of the insulating cylinder (1). A fixing member (10) made of an insulating material for surrounding and fixing the electrode (9) is provided to strengthen the mechanical connection. The fixing member (10) has a plurality of openings (10a), and simultaneously engages the electrodes (9) of adjacent capacitor elements (7). The outer end portion of the fixing member (10) was formed smaller than the outer shape of the capacitor element body (8). This provides the gas circuit breaker (100) that does not generate electric field concentration in the capacitor device (4).

Description

  The present application relates to a gas circuit breaker.

  The gas circuit breaker has a shutoff portion consisting of two contacts, a fixed contact and a movable contact, in a metal ground tank filled with an insulating gas. The capacitor is inserted electrically in parallel with the interrupting portion in order to slow the rise time of the transient recovery voltage generated between the fixed contact and the movable contact after the disconnection.

  Conventionally, a capacitor used for such a gas circuit breaker requires many capacitors in order to secure the interrupting performance, and the upsizing of the apparatus has been a problem. On the other hand, in order to secure a necessary mounting space, for example, a capacitor is formed inside a cylindrical wall of an insulating cylinder which mechanically supports a blocking portion and forms an arc-extinguishing chamber as disclosed in Patent Document 1 is there. Further, there is one in which a large number of ceramic capacitors electrically connected in series are electrically connected in parallel at an end and fixed as shown in Patent Document 2.

JP-A-8-87931 Japanese Patent Application Laid-Open No. 5-282969

  However, in the conventional gas circuit breaker disclosed in Patent Document 1, a unit in which a plurality of capacitor elements are electrically connected in series is electrically connected in parallel at the termination portion, so that the units are mechanically connected. Not connected. For this reason, if positional displacement occurs between the capacitor elements due to vibration, a potential difference is generated between the units, that is, between the capacitor elements in the parallel direction, and there is a possibility of dielectric breakdown. On the other hand, as in Patent Document 2, there is a structure in which the capacitor elements in the parallel direction are interconnected by a pressure equalizing ring, but an electric field is concentrated at the end of the pressure equalizing ring or capacitor element at the time of charging. There is sex.

  This application discloses the art for solving the above-mentioned subject, and it aims at providing a gas circuit breaker which does not generate dielectric breakdown and electric field concentration around a capacitor apparatus and its peripheral part.

The gas circuit breaker disclosed in the present application is electrically connected in parallel with the blocking portion having a pair of contacts provided in the insulating cylinder and the blocking portion, and along the circumferential direction of the outer circumferential portion of the insulating cylinder And a plurality of capacitor devices, each having a plurality of capacitor elements including a capacitor element body and electrodes provided at both ends of the plurality of capacitor devices, wherein the plurality of capacitor devices are insulated such that the electrodes face each other The electrodes of the capacitor elements which are electrically connected in series in the axial direction of the outer peripheral portion of the cylinder and are adjacent to each other in the circumferential direction are fixed by a fixing member formed so as to surround each of the electrodes. It is made of an insulating material, wherein a plurality of openings for fitting the electrode capacitor element, the outer end portion surrounding the opening is smaller radius of curvature than the radius of the cylindrical of the capacitor device body It is characterized in that an arc shape.

  According to the gas circuit breaker disclosed in the present application, the space between the electrodes connecting the axially adjacent capacitor elements to the fixing member for mechanically fixing the capacitor elements adjacent in the circumferential direction of the outer peripheral portion of the insulating cylinder Since mechanical connection is made by using a fixing member made of an insulating material, dielectric breakdown and electric field concentration in the capacitor device and its periphery can be suppressed, and an effect of being a discharge starting point can be avoided. . Further, the capacitor device can be easily attached, and the capacitance of the capacitor device can be easily changed.

It is a block diagram which shows schematic structure of the gas circuit breaker which concerns on Embodiment 1, and is an axial sectional view of an arc-extinguishing chamber part. It is a block diagram which shows schematic structure of the gas circuit breaker which concerns on Embodiment 1, and is sectional drawing of the direction perpendicular | vertical to the axis | shaft of the arc-extinguishing office part seen from XX direction in FIG. 1A. FIG. 1 is a configuration diagram of a capacitor element according to Embodiment 1. FIG. 2 is a diagram for explaining a capacitor device configured by the capacitor element according to the first embodiment. 5 is a plan view showing a fixing member according to Embodiment 1. FIG. It is a figure explaining the structure when connecting capacitor elements using the fixing member which concerns on Embodiment 1. FIG. It is a figure explaining the state which the capacitor | condenser apparatus comprised using the fixing member which concerns on Embodiment 1 is arrange | positioned in parallel, and is a partial block diagram seen from the arrow A direction in FIG. 1B. It is a figure which shows the other state which has arrange | positioned the capacitor | condenser apparatus comprised using the fixing member which concerns on Embodiment 1 in parallel. It is a block diagram which shows schematic structure of the gas circuit breaker which concerns on Embodiment 2, and is an axial sectional view of an arc-extinguishing chamber part. It is a block diagram which shows schematic structure of the gas circuit breaker which concerns on Embodiment 2, and is a fragmentary sectional view of the direction perpendicular | vertical to the axis | shaft of the arc-extinguishing office part seen from YY line direction in FIG. 8A. It is a figure explaining the state which the capacitor | condenser apparatus comprised using the fixing member which concerns on Embodiment 2 arrange | positions in multiple numbers, and is a partial block diagram seen from the arrow B direction in FIG. 8B. It is a figure which shows the state which has arrange | positioned the capacitor | condenser apparatus comprised using the fixing member which concerns on Embodiment 3 in parallel. It is a figure which shows the other state which has arrange | positioned the capacitor | condenser apparatus comprised using the fixing member which concerns on Embodiment 3 in parallel. It is a figure which shows the further another state which has arrange | positioned the capacitor | condenser apparatus comprised using the fixing member which concerns on Embodiment 3 in parallel. It is a figure which shows the further another state which has arrange | positioned the capacitor | condenser apparatus comprised using the fixing member which concerns on Embodiment 3 in parallel. FIG. 18 is a plan view showing a fixing member according to Embodiment 4. FIG. 18 is a configuration diagram showing an end portion of a capacitor device according to Embodiment 5. FIG. 18 is another configuration diagram showing an end of another capacitor device according to Embodiment 5; FIG. 21 is a plan view showing a fixing member for fixing an end portion of the capacitor device according to the sixth embodiment. FIG. 21 is a plan view showing another fixing member for fixing an end portion of the capacitor device according to the sixth embodiment. FIG. 16 is a configuration diagram showing a schematic configuration of a gas circuit breaker according to Embodiment 6.

  Hereinafter, embodiments will be described with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1
The gas circuit breaker 100 which concerns on Embodiment 1 is demonstrated using figures.
FIG. 1A is an axial cross-sectional view schematically showing a gas circuit breaker 100 according to the embodiment, and FIG. 1B is a cross-sectional view in a direction perpendicular to an axis viewed from the XX line direction in FIG. FIG. 2 is a block diagram of a single capacitor element 7 constituting the capacitor device 4 provided in the gas circuit breaker 100, and FIG. 3 is a diagram of the capacitor device 4 to which the capacitor element 7 is electrically connected in series. It is a figure which shows a state. Moreover, FIG. 4 is a top view which shows the fixing member 10 which fixes the capacitor | condenser apparatus 4 electrically connected in parallel.
The arc-extinguishing chamber part of the gas circuit breaker 100 is expanded and shown to FIG. 1A and FIG. 1B. The arc-extinguishing chamber (not shown) in the metal grounding tank is filled with an insulating gas (not shown) for maintaining the insulation and blocking performance. Examples of the insulating gas include single gases such as SF ₆ , dry air, N ₂ , CO ₂ , O ₂ and CF ₃ I. Further, a mixture of two or more of the above gases may be used.

The first contact 2 and the second contact 3 which are one component of the arc-extinguishing chamber are mechanically fixed by the mounting fitting 5 and the mounting fitting 6, respectively. The pair of contacts are provided in the insulating cylinder 1 so as to be able to be in contact with and separated from each other to constitute a blocking portion. In addition, the insulating cylinder 1 also plays a role of maintaining the electrical insulation of the two contacts 2 and 3 after blocking.
The capacitor device 4 is attached to the attachment fittings 5 and 6 along the outer peripheral side surface of the insulating cylinder 1. FIG. 1B shows an example in which two sets of two capacitor devices 4 are arranged adjacent to each other along the outer periphery. The capacitor devices 4 are electrically connected in parallel to the first contact 2 and the second contact 3. Furthermore, the mounting brackets 5 and 6 constitute a shield electrode for electric field relaxation by rounding the peripheral end, thereby improving the withstand voltage performance of the end of the capacitor device 4.
In the embodiment, the insulating cylinder 1 is a structure formed of an insulating material whose main component is a resin. As the insulating material, a thermoplastic resin and a thermosetting resin can be considered. In the case of a thermoplastic resin, a resin of vinyl chloride type, polyester type, nylon type or the like is used, and in the case of a thermosetting resin, a resin of epoxy type, urethane type, acrylic type or the like is used.

Next, the structure of the capacitor element 7 constituting the capacitor device 4 will be described. For example, in FIG. 2, the capacitor element 7 has a cylindrical shape , and includes a capacitor element body 8 for holding the capacitance of the capacitor, and an electrode 9 of the capacitor element for electrically connecting the capacitor element 7. The electrodes 9 are respectively attached to both ends of the main body 8 and function as a capacitor by generating a potential difference in the electrodes 9 at both ends. The outer diameter of the electrode 9 is smaller than the outer diameter of the main body 8 so that the electrode 9 does not become a dielectric breakdown starting point.
The capacitor device 4 is configured by electrically connecting a plurality of capacitor elements 7 in series as shown in FIG. 3, for example. The electrical series connection is maintained by mechanically connecting the electrodes 9 of the axially adjacent capacitor elements 7 to each other. For example, by pasting the electrodes 9 together with a conductive paint or conductive adhesive, or by fastening two electrodes 9 in series by providing screw holes or threads in the electrodes 9, etc., during circuit breaker operation or earthquake Hold so as not to separate even by vibration due to etc. Further, a spring or the like is disposed between the end of the capacitor device 4 and the mounting brackets 5 and 6 and held so as to be held down so as not to be detached even when the circuit breaker operates or due to an earthquake or the like.

  Next, the voltage applied to the capacitor device 4 will be described. When a voltage is generated at both ends of a capacitor device 4 configured by connecting a plurality of capacitor elements 7 in series, a voltage equally shared by the number of capacitor elements 7 is generated at both ends of each capacitor element 7. In order to increase the capacitor capacity, for example, a plurality of capacitor devices 4 configured by the same number of capacitor elements 7 may be electrically connected in parallel. In this case, among the capacitor devices 4 adjacent in the circumferential direction, the electrodes 9 of the adjacent capacitor elements 7 arranged at the same position have the same potential.

Next, the fixing member 10 according to the first embodiment will be described. The fixing member 10 is made of an insulating material having a predetermined thickness, and has a plurality of openings 10a. In FIG. 4, the openings 10a are two examples. FIG. 5 shows an example in which two capacitor devices 4 are connected using the fixing member 10, and shows a part of the capacitor device 4 as viewed from the direction A in FIG. 1B. As shown in FIG. 1B, two capacitor devices 4 are arranged along the circumferential direction of insulating cylinder 1, and opening 10a of fixing member 10 is fitted to each of electrodes 9 of capacitor elements 7 adjacent in the circumferential direction. . Thereby, adjacent capacitor elements 7 are mechanically connected and fixed. If the fixing member 10 is provided so as to straddle the opposing portion of the series-connected electrodes 9 of the capacitor device 4 as shown in FIG. 5, the reliability of the connection between the electrodes 9 is also enhanced.
6 and 7 show an example in which two capacitor devices 4 in which three or more capacitor elements 7 are connected in series are arranged in the circumferential direction, but both ends of all adjacent capacitor elements 7 as shown in FIG. When the electrodes 9 of the above are fitted and fixed by the fixing member, mechanically strong connection is obtained. Even when the fixing member is fitted to any one of the electrodes 9 as shown in FIG. 7, the effect of fixing can be obtained as compared with the related art in which the fixing member 10 is not provided at all.

  In this manner, a fixing member for mechanically fixing the capacitor element 7 adjacent in the circumferential direction of the outer peripheral portion of the insulating cylinder 1 is provided between the axially adjacent capacitor elements 7, that is, a space around the connected electrodes 9. Since the electrodes 9 of the same potential of the capacitor elements 7 adjacent to each other in the circumferential direction of the outer peripheral portion of the insulating cylinder 1 are mechanically fixed, the electrodes 9 of the same potential are positioned by vibration. There will be no gap. For this reason, when the device is operated or when a high voltage surge occurs, the displacement does not cause a potential difference to cause discharge and breakdown.

The outer peripheral portion of the fixing member 10 is composed of a straight portion 10 b and an arc 10 c as shown in FIG. 4, and the radius of curvature of the arc is smaller than the radius of the capacitor element 7. As a result, the electric field concentration is not easily generated at the end of the fixing member 10, and therefore, when the device is operated or when a high voltage surge is generated, the discharge and the dielectric breakdown do not occur from the electric field concentration portion.
In the above description, the outer end of the fixing member 10 fitted to the electrode 9 of the capacitor element 7 and surrounding the electrode 9 is a circular arc 10c, but it may not be circular if it is smaller than the outer shape of the capacitor element 7. If it is arc-shaped, electric field concentration does not easily occur, but if it is smaller than the outline of capacitor element 7, it does not protrude from between the capacitor elements connected in series, and the possibility of electric field concentration is low. is there.

  If the material of the fixing member 10 has the same dielectric constant and the same volume resistivity as the material of the insulating cylinder 1 described above, an electric field concentrated portion is less likely to be generated around the capacitor device 4 and the insulating cylinder 1. As a result, when the device is operated or when a high voltage surge occurs, it is not possible to cause discharge and breakdown from the electric field concentration point.

Second Embodiment
A gas circuit breaker 200 according to Embodiment 2 will be described with reference to the drawings.
In the first embodiment, the case where two capacitor devices 4 are arranged in parallel in the circumferential direction of the outer peripheral portion of the insulating cylinder 1 has been described. In the second embodiment, three or more capacitor devices 4 are arranged in parallel in the circumferential direction. In this case, fixing between the capacitor elements 7 adjacent in the circumferential direction with the fixing member 10 shown in FIG. 4 will be described.
FIG. 8A is an axial sectional view showing a schematic configuration of the gas circuit breaker 200 according to the embodiment. FIG. 8B is a partial cross-sectional view in the direction perpendicular to the axis viewed from the YY direction in FIG. 8A. FIG. 9 shows a part of the capacitor device 4 as viewed in the direction of arrow B in FIG. 8B. In FIG. 8B, the opening 10a of the fixing member 10 is fitted to each of the electrodes 9 of the capacitor elements 7 adjacent in the circumferential direction among the adjacent capacitor devices 4. As shown in FIG. 9, when looking at a certain capacitor element 71, the upper electrode 9 is fitted and fixed by the fixing member 10 together with the upper electrode 9 of the right capacitor element 72. On the other hand, the lower electrode 9 of the capacitor element 71 is fitted and fixed by the fixing member 10 together with the lower electrode 9 of the left capacitor element 73.

As described above, in the arrangement in which three or more capacitor devices 4 in which a plurality of capacitor elements 7 are connected in series are arranged in the circumferential direction, one of the electrodes at both ends of the capacitor element 7 is a capacitor element adjacent in the first circumferential direction The electrode of one end of the capacitor 7 is fixed, and the electrode of the other end of the capacitor element 7 is fixed with the electrode of the other end of the capacitor element 7 adjacent in the second circumferential direction. Since mechanical fixing and connection are performed by the member 10, three or more capacitor elements 7 adjacent in the circumferential direction can be easily connected. As a result, the storage space required as the capacitor structure depends only on the outer diameter of the insulating cylinder 1 and the outer diameter of the capacitor element 7, so that the capacity of the capacitor can be formed in a compact manner. It can be improved. In addition, since the adjacent sides are mechanically connected by the fixing member 10 so as to alternate with each other, the capacitor device 4 can be moved like a joint, so that the arrangement shape can be easily changed. Can be easily attached and removed when arranging it on the outer periphery of the insulating cylinder 1. Further, since the number of capacitor elements 7 constituting the capacitor device 4 can be easily changed, the capacitance of the capacitor device 4 can be easily changed.
As described in the first embodiment, as shown in FIG. 9, if the fixing member 10 is provided so as to straddle the connection between the electrodes 9 connected in series of the capacitor device 4, connection between the electrodes 9 is Reliability also increases.

Third Embodiment
In the second embodiment, when mechanically connecting and fixing a plurality of capacitor devices 4 arranged in the circumferential direction of the outer peripheral portion of insulating cylinder 1 to one mechanical connection portion between capacitor elements 7 adjacent in the axial direction. Although one fixing member 10 is used, in the third embodiment, an example in which a plurality is used will be described.

FIGS. 10, 11 and 12 show an example in which two fixing members 10 are provided in one mechanical connection portion when mechanically connecting a plurality of capacitor devices 4 arranged on the outer peripheral side surface of the insulating cylinder 1.
In FIG. 10, of the two fixing members provided in one mechanical connection, the upper and lower fixing members 10 closer to a certain capacitor element 7 connect the upper and lower sides of the adjacent circumferential capacitor element 7. Configured. As described above, if the fixing member 10 is arranged so that the same capacitor element 7 is connected to the connection structure on both sides of one capacitor element 7, the joint portion becomes stable and the structure is less likely to be misaligned. .
In FIG. 11, of the two fixing members provided in one mechanical connection portion, the upper and lower fixing members 10 on the side closer to a certain capacitor element 7 are the capacitor elements 7 of the capacitor device 4 in different directions in adjacent circumferential directions. It is configured to connect between each other. As described above, when the fixing member 10 is arranged in this manner, it is difficult to bend the joint as compared with, for example, the structure shown in FIG. 7, so that the mechanical strength can be increased.

FIG. 12 shows an example in which two fixing members 10 of different thicknesses are provided at one mechanical connection in FIG. FIG. 13 shows an example in which three fixing members 10 are provided in one mechanical connection portion when mechanically connecting and fixing a plurality of capacitor devices 4 arranged in a row on the outer peripheral side surface of the insulating cylinder 1.
As described above, in the case where a plurality of fixing members 10 are provided in one mechanical connection portion, when one of the fixing members 10 is disposed so as to straddle the connection portion between the electrodes 9, the connection between the electrodes 9 is Reliability also increases.

  In the present embodiment, two or three fixing members 10 are used for one mechanical connection between axially adjacent capacitor elements 7, but four or more may be used. Moreover, you may use suitably the several fixing member 10 of the different thickness. The plurality of fixing members 10 need only have a total thickness smaller than the length of the connected electrodes 9. If the length is equal to the length of the electrodes 9, the gap between the electrodes 9 is eliminated, and the fixing is stronger become.

Fourth Embodiment
In the first to third embodiments described above, the capacitor structure of the gas circuit breaker using the fixing member 10 having two openings shown in FIG. 4 is shown, but in the present embodiment, the fixing member 20 having three openings is shown. Will be explained.

FIG. 14 is a view for explaining the fixing member 20 according to the fourth embodiment. The fixing member 20 is made of an insulating material and has three openings 20a.
When such a fixing member 20 is used, three adjacent capacitor elements 7 can be fixed when three or more capacitor devices 4 described in the second and third embodiments are arranged along the outer periphery of insulating cylinder 1. be able to. As shown in the third embodiment, a plurality of mechanical connections can be provided at one mechanical connection between axially adjacent capacitor elements 7.
As described above, in the capacitor device 4 adjacent in the circumferential direction of the outer peripheral portion of the insulating cylinder 1, the electrodes 9 of the same potential are mechanically fixed, so that the electrodes 9 of the same potential may be displaced due to vibration. It disappears. For this reason, when the device is operated or when a high voltage surge occurs, the displacement does not cause a potential difference to cause discharge and breakdown.

For example, the outer peripheral portion of the fixing member 20 is configured by different arcs 20 b, 20 c, and 20 d, and the radius of curvature of the arc 20 c is smaller than the diameter of the capacitor element 7. The radius of curvature of the arc 20 d is smaller than the diameter of the circle that draws the outermost periphery of the capacitor device 4 when the plurality of capacitor devices 4 is disposed along the outer periphery of the insulating cylinder 1. The radius of curvature of the arc 20 b is larger than the diameter of the insulating cylinder 1 It is formed to be As a result, the fixing member 20 is contained between the circles that draw the outermost circumferences of the insulating cylinder 1 and the capacitor device 4, and electric field concentration is less likely to occur at the end of the fixing member 20. There is no longer any possibility of causing discharge and breakdown from the electric field concentration point when
Further, as described in the first embodiment, the outer end portion of the fixing member 20 which is fitted to the electrode 9 of the capacitor element 7 and surrounds the electrode 9 is a circular arc 20c, but if it is smaller than the outer shape of the capacitor element 7 It does not have to be circular. If it is arc-shaped, electric field concentration is unlikely to occur, but the fixing member 20 fits between the circle that describes the outermost circumference of the insulating cylinder 1 and the capacitor device 4 and is connected in series if it is smaller than the outline of the capacitor element 7 It does not protrude from between the capacitor elements, and the possibility of electric field concentration is low.

  The fixing member 20 can also be made of the same material as that of the fixing member 10 described in the first embodiment. With the same dielectric constant and volume resistivity as the material of the insulating cylinder 1 described above, an electric field concentrated portion is less likely to be generated around the capacitor device 4 and the insulating cylinder 1. As a result, when the device is operated or when a high voltage surge occurs, it is not possible to cause discharge and breakdown from the electric field concentration point.

Embodiment 5
In Embodiments 1 to 4 of the above-described embodiment, the structure in the capacitor device for mechanically fixing the capacitor element adjacent in the circumferential direction of the outer peripheral portion of the insulating cylinder is described, but in the present embodiment, the capacitor device The structure of both ends of the capacitor device for electrical connection in parallel will be described.

FIG. 15 is a configuration diagram showing a structure of an end portion of the capacitor device 4 according to the fifth embodiment, and shows both end portions of the capacitor device shown in FIG. 11 of the third embodiment. In the figure, the second fixing member 30 for fixing the electrode portion at the end of the capacitor device has the same structure as the fixing members 10 and 20 shown in the above-described embodiment, but the material is metal or low conductivity. It is a resistance material. The electrode of the capacitor element is fitted to the fixing member 30, electrically connected and fastened. The fixing member 30 is connected to the first contact 2 and the second contact 3 via the mounting brackets 5 and 6 shown in FIG. 1A or 8A, respectively, and the capacitor device 4 and the first arranged in parallel with each other. The contact 2 and the second contact 3 are connected.
Further, as shown in FIG. 16, two fixing members 30 may be disposed in two layers at both ends. In this case, the fixing member on the capacitor element 7 side may use the fixing member formed of the insulating member described in the first to fourth embodiments.
Furthermore, a part of the fixing member 30 of the capacitor device 4 disposed around the insulating cylinder 1 may be extended and directly connected to the first contact 2 and the second contact 3. In addition to the fixing member 30, the fixing member 30, the first contact 2 and the second contact 3 may be directly or attached by the fastening member (not shown) made of metal or low-resistance material having conductivity. You may connect via the mounting bracket 6.

  As described above, in the present embodiment, since the material of the fixing member 30 for fixing the electrodes at both ends of the capacitor device 4 is metal or a low resistance material having conductivity, in addition to the effects of the first to fourth embodiments. The fixing of the adjacent capacitor devices 4 can be made rigid, and the capacitor devices 4 can be connected in parallel.

Sixth Embodiment
In the fifth embodiment described above, the structure for electrically connecting the capacitor devices in parallel using the second fixing member is described, but in the present embodiment, the capacitor devices are electrically connected using the rails. The structure for connecting in parallel is described.

FIG. 17 is a plan view showing a rail for fixing an end portion of the capacitor device according to the sixth embodiment. In the figure, + marks indicate the axial direction. The material of the rail 40 is a metal or a low resistance material having conductivity. But semicircular arc shape in the figure, if a shape along the outer peripheral portion of the insulating tube 1 may not be a semi-circular arc may be, for example, a 1 arc-quarter. The shape along the outer peripheral portion does not have to match the outer peripheral diameter of the insulating cylinder and the inner peripheral diameter of the rail 40. For example, the inner peripheral diameter of the rail 40 may be larger than the outer peripheral diameter of the insulating cylinder. The electrode 9 at the end of the capacitor device 4 is passed through the opening 40a of the rail 40 (in the figure, three of the electrodes 9 are described), for example, made of metal or a low resistance material having conductivity. The capacitor devices 4 can be electrically connected in parallel by mechanically fixing them from the outer peripheral side of the rail using a fastening member 41 such as a screw. Also, this rail 40 is connected to the first contact 2 and the second contact 3 via the mounting bracket 5 and the mounting bracket 6 shown in FIG. And the first contactor 2 and the second contactor 3 are connected.
Alternatively, the electrode portion of the first contactor 2 or the second contactor 3 may be extended and directly fixed to a part of the opening 40 a of the rail 40.

FIG. 18 is a plan view showing another rail for fixing the end portion of the capacitor device according to the sixth embodiment. In the drawing, as shown in FIG. 18, by providing the mounting wings 40 b on the rail 40, it is possible to easily fix the first contact 2 or the second contact 3 to the electrode portion. Although FIG. 18 shows one example of the mounting wing portion, a plurality of mounting wings may be mounted, or the mounting wings may be shaped to block part of the opening 40a of the rail.
FIG. 19 is a schematic block diagram of the gas circuit breaker 300 on which the rail 40 shown in FIG. 18 is mounted. Electrodes 9 are fitted and fixed to both ends of the capacitor device 4, and fixed rails are arranged, and mounting wings 40 b of the rails 40 are fixed to the mounting brackets 5 and 6 by fastening members 41. With such a configuration, the capacitor device 4 and the first contactor 2 and the second contact which are connected in parallel to the first contactor 2 and the second contactor 3 via the mounting fitting 5 and the mounting fitting 6 respectively The child 3 is connected.

  Note that the opening 40a of the rail 40 may be a penetrating opening or may be in the form of a groove whose upper surface is not penetrating.

  As described above, in the present embodiment, as the fixing member for fixing the electrodes at both ends of the capacitor device 4, the rail 40 which is a metal or a low resistance material having conductivity is used. In addition to the effect of the second embodiment, as in the fifth embodiment, the fixing between the adjacent capacitor devices 4 can be made rigid, and the capacitor devices 4 can be connected in parallel.

While this disclosure describes various exemplary embodiments and examples, the various features, aspects, and features described in one or more embodiments are of particular embodiments. The invention is not limited to the application, and can be applied to the embodiment alone or in various combinations.
Accordingly, numerous modifications not illustrated are contemplated within the scope of the technology disclosed herein. For example, when deforming at least one component, adding or omitting it, it is further included that at least one component is extracted and combined with a component of another embodiment.

  1: Insulating cylinder, 2: First contact, 3: Second contact, 4: Capacitor device, 5, 6 Mounting bracket, 7, 71, 72, 73: Capacitor element, 8: Capacitor element body, 9: Capacitor Element electrodes 10, 20: Fixing members, 10a, 20a: Openings, 10b: Straight portions, 10c, 20b, 20c, 20d: Arcs, 30: Second fixing members, 40: Rails, 40a: Openings, 40b: mounting wings 41: fastening members 100, 200, 300: gas circuit breakers.

Claims (7)

A blocking portion having a pair of contacts provided in the insulating cylinder;
And a plurality of capacitor devices electrically connected in parallel with the blocking portion and disposed along a circumferential direction of an outer peripheral portion of the insulating cylinder,
Each of the plurality of capacitor devices has a plurality of capacitor elements including a capacitor element body and electrodes provided at both ends thereof, and electrically in an axial direction of an outer peripheral portion of the insulating cylinder such that the electrodes face each other. Connected in series,
The electrodes of the capacitor elements adjacent in the circumferential direction are fixed by a fixing member formed so as to surround each of the electrodes,
The fixing member is made of an insulating material, wherein a plurality of openings for fitting the electrodes of the capacitor element, the outer end portion surrounding the opening, a cylindrical radius smaller than the radius of curvature of the capacitor device body A gas circuit breaker characterized by having an arc shape. Equipped with three or more capacitor devices,
Among the electrodes at both ends of the capacitor element, an electrode at one end is fixed to an electrode at one end of the capacitor element adjacent in the first circumferential direction,
The electrode at the other end of the capacitor element is fixed to the electrode at the other end of the capacitor element adjacent in the second circumferential direction, and is fixed by a fixing member so as to be alternate at both ends of the capacitor element. The gas circuit breaker according to claim 1.   The gas circuit breaker according to claim 1 or 2, wherein the fixing member is disposed so as to straddle the facing portion of the electrode of the capacitor element axially adjacent to each other.   The gas circuit breaker according to any one of claims 1 to 3, wherein a plurality of the fixing members are disposed between the capacitor elements axially adjacent to each other.   The gas circuit breaker according to any one of claims 1 to 4, wherein the fixing member is an insulating material having the same resistivity and permittivity as the insulating cylinder.   A second fixing member for electrically connecting and fixing the adjacent electrodes is provided at both axial ends of the capacitor device, and the second fixing member is a metal or a low resistance material having conductivity. The gas circuit breaker according to any one of claims 1 to 5, characterized in that   The rail of the metal or the low resistance material having conductivity having an opening for fitting the electrode of the capacitor element is disposed at both axial ends of the capacitor device. The gas circuit breaker according to any one of the preceding claims.

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