KR100335318B1 - Flexible conductor and switchgear made with thereof - Google Patents

Abstract

The present invention provides a flexible conductor that can stabilize and tolerate the displacement of a movable conductor with respect to a high conductor for a long time without losing its flexibility even when used in a vacuum.

A plurality of conductor metal layers 10a, 10a,... And a plurality of anti-adhesion layers 10b and 10b. The flexible conductor 1 is comprised by the flexible part 1a which is laminated | stacked alternately in the thickness direction, and the fixing parts 1b and 1b provided in the both sides of this flexible part 1a, and comprises the fixed part, In the use state in which (1b) and (1b) are fixed to the high conductor 24 and the movable conductor 25, respectively, the flexible part 1a bends in accordance with the movement of the movable conductor 25 with respect to the high conductor 24. FIG. When deforming, the conductive metal layers 10a and 10a prevent sliding contact with each other.

Description

Flexible conductors and switchgears using them {FLEXIBLE CONDUCTOR AND SWITCHGEAR MADE WITH THEREOF}

The present invention relates to, for example, a flexible conductor used to contact a movable electrode as a movable conductor operated by an operation rod to a load side conductor as a fixed conductor, and more particularly, to a flexible conductor used inside a vacuum container. The present invention also relates to a switchgear having a main circuit opening and closing portion for contacting and disconnecting a bus side conductor (power supply side conductor) and a load side conductor connected to a power supply.

Switchgear (closed switchgear) used to distribute the electric power received from the bus to various load devices or other electrical chambers is connected to the bus side conductor for connection to the bus and the load side conductor for connection to the transmission cable to the load. In addition, internal devices such as a main circuit switch connecting and disconnecting the bus side conductors and the load side conductors, a grounding switch for grounding the load side conductors, and a controller necessary for supervisory control are appropriately arranged in an enclosure made of a ground metal.

As a kind of such switchgear, a main circuit switch is used to open and close a large current inside a vacuum vessel maintained at high vacuum around 10-7 Torr, and the opening and closing is stable by using a large dielectric strength and good extinguishing action in high vacuum. There is a switchgear to be implemented.

21 and 22 are side cross-sectional views showing the main parts of the switchgear disclosed in Japanese Patent Laid-Open No. 56-7317.

This switchgear is provided with the vacuum container 3 supported inside the enclosure 2 of the insulator.

Inside the vacuum vessel 3, a fixed electrode 5 fixed to one side thereof and a movable electrode 6 supported on the other side via a bellows 8 to enable movement in the axial length direction are provided. The busbar side conductor 9 fixed to the enclosure 2 is connected to the extension end of the fixed electrode 5 to the outside of the vacuum container 3, and is disposed to face the contact point of the tip. The extension of the movable electrode 6 to the outside of 3) is connected to the load side conductor 11 fixed to the enclosure 2 by a flexible conductor 10 having one end connected at its intermediate point and not shown. It is connected to the opening and closing operation mechanism through the operation rod.

In the switchgear configured as described above, the operation of the opening and closing operation mechanism is transmitted to the movable electrode 6 through the operation rod, and the movable electrode 6 is brought into contact with and separated from the fixed electrode 5 to connect the bus bar side conductors ( The main circuit current is opened and closed between 9) and the load-side conductor 11.

FIG. 21 shows a closed state in which the fixed electrode 5 and the movable electrode 6 are in contact, and FIG. 22 shows an open state in which the movable electrode 6 is separated from the fixed electrode 5.

The flexible conductor 10 which connects the movable electrode 6 and the load side conductor 11, displaces the displacement of the movable electrode 6 which arises with respect to the load side conductor 11 fixed to the enclosure 2 according to the said opening-closing operation. It is used by the bending deformation and to maintain the electrical conduction state between them.

23 is a side sectional view showing a configuration of a conventional flexible conductor 10.

As shown in the figure, the flexible conductor 10 has a thickness of about 100 μm, and includes a plurality of conductor layers (generally, copper foil is used) 10a, 10a. Are laminated in the thickness direction, and both ends thereof are bound by fixing brackets 21 and 21 made of a conductive metal, and bolt holes formed through the fixing brackets 21 and 21, respectively, It is used to tighten and fix the corresponding positions of the movable electrode 6 and the load side conductor by a fixing bolt (not shown) inserted into the 22 and 22.

In the flexible conductor 10 configured as described above, the conductor layers 10a, 10a,... Only the two end portions are restrained by the fixing brackets 21 and 21, respectively, and the above-described displacement of the movable electrode 6 is performed by the conductor layers 10a, 10a,. It is to be accepted by the bending deformation of the thickness direction of the.

30 is a schematic side cross-sectional view showing the main structure of a conventional switchgear, in which 20 is a vacuum container with a high vacuum inside.

In the vacuum vessel 20, one end of the power supply side (the bus side) conductor 21 is introduced from the upper side through the bus bushing 22, and one end of the load side conductor 33 is introduced from the side through the cable bushing 34. have.

The first fixed electrode 23 is provided at the lower end of the power supply side conductor 21, and faces the first movable electrode 24 provided at the upper end of the conductive rod 26 at an appropriate interval thereunder. The main circuit opening and closing part 25 is comprised by this.

The conductive rod 26 is provided on the same straight line as the power supply side conductor 21, and the lower end thereof is connected to the insulating rod 29, and the insulating rod 29 is connected to the vacuum vessel (the operating rod 28). It is connected to a driving device (not shown) provided outside of 20, and the first fixed electrode 23 of the power supply side conductor 21 and the first movable electrode 24 of the conductive rod 26 are connected by the driving device. It is intended to be contact separated.

The airtightness of the vacuum container 20 is preserve | saved by interposing the 1st bellows 31 between the operation rod 28 and the edge part of the periphery of the hole of the vacuum container 20 which penetrated it.

On the other hand, the metal ring 27 is inserted and fixed to the intermediate part of the conductive rod 26 so that the circumferential surface thereof may face one end of the load side conductor 33.

Between the peripheral surface of the metal ring 27 and one end of the load side conductor 33 are connected by soldering each end portion of the flexible conductor 40 formed by superimposing a metal foil.

In addition, the upper end of the ground conductor 36 protrudes from the lower side of the vacuum vessel 20 to the position opposite to the load side conductor 33, and can be brought into contact with and separated from the load side conductor 33 by a driving device (not shown). have.

The second movable electrode 38 is provided at the upper end of the ground conductor 36, and the second fixed electrode 37 is provided at the circumferential surface of the load side conductor 33 facing the ground conductor 36. 39).

The airtightness of the vacuum container 20 is preserve | saved by interposing the 2nd bellows 32 between the ground conductor 36 and the peripheral edge part of the hole of the vacuum container 20 which penetrates it.

Fig. 31 is a schematic side sectional view showing the main part structure of a conventional switchgear.

In the drawing, an annular sliding contact 41 is provided on the conductive rod 26 so as to be slidable instead of the metal ring 27, and a load conductor 33 is connected to the peripheral surface of the sliding contact 41. .

In the switchgear configured as described above, the inside of the enclosure 2 in which the flexible conductor 10 is arranged is filled with an inert gas such as a CFC gas to obtain an insulation effect. The use of inert gases tends to be limited.

Accordingly, the vacuum vessel 3 is connected to the main circuit breaker together with the main circuit breaker, such as a connection portion between the movable electrode 6 and the load side conductor 11 and a connection portion between the movable electrode 6 and the operation rod by the flexible conductor 10. The development of the switchgear which is accommodated in the inside of the) is in progress.

However, when the conventional flexible conductor 10 configured as described above is disposed inside the vacuum container, the following problem occurs.

That is, in the conventional flexible conductor 10, when the bending deformation is performed as described above to allow displacement of the movable electrode 6, the conductor layers 10a, 10a,... These are in sliding contact at each of the interfaces and the oxide films formed at their interfaces are removed.

When the sliding contact occurs in an inert gas or in the atmosphere, the removed oxide film is restored by oxidation again, while when the sliding contact occurs in vacuum, the oxidation layer is not oxidized again. Therefore, the conductor layer 10a, ( 10)… The copper foils constituting the copper foil make sliding contact directly without interposing an oxide film, and the sliding contact causes each of the conductor layers 10a, 10a,. The two adhere to each other and unite, and the original flexibility is gradually lost.

Accordingly, a problem arises in that the displacement of the movable electrode 6 cannot be tolerated well and the opening and closing operation is disturbed.

In the switchgear as described above, after pre-baking for degassing, the flexible conductor 40 is placed at one end of the metal ring 27 and the load side conductor 33, and the flexible conductor Each end of the 40 is soldered and fixed, but at this time, impurities of the flexible conductor 40 are diffused by annealing by heating and heat radiation, and a cleansing action is performed in which the metal components are homogenized.

However, the surface of the metal foil constituting the flexible conductor 40 adheres to each other when the oxide film is removed and the current flows through the flexible conductor 40 while the metal foil is rubbed with each other during the cleaning process.

When adhesion occurs on the metal foil of the flexible conductor 40, not only the original flexibility is lost, but also when the flexible conductor 40 is wheeled in accordance with the advancing and moving of the conductive rod 26, the adhesion occurs from multiple directions. The shear force of the metal foil is generated by the application of the force of, but when the portion of the shear deformation is destroyed, the conductive adhesive wear powder is scattered around, contaminating the inside of the vacuum container 26 which preserved the insulation and degrading the withstand voltage performance. There was a problem.

The present invention has been made to solve the above problems, and provides a flexible conductor capable of stably allowing displacement of the movable conductor with respect to the fixed conductor over a long time without losing flexibility even when used in a vacuum. It aims to do it.

In addition, an object of the present invention is to keep the inside of the cover member covering the flexible conductor in an airtight state, and to prevent the adhesion of the flexible conductor by enclosing the atmosphere or nitrogen gas therein, and the vacuum container by the adhesive wear powder at the time of breaking The present invention is to provide a switchgear that is capable of stabilizing voltage resistance by preventing internal contamination.

Another object is to provide a switchgear having a flexible conductor installed outside the vacuum vessel to prevent the occurrence of adhesion itself and to prevent contamination in the vacuum vessel due to the conductive adhesion wear powder to stabilize the voltage resistance performance.

Still another object is to provide a switchgear with stable conductive voltage performance by providing a pipe-shaped conductive member on the conductive rod and the load-side conductor to prevent adhesion and to prevent contamination in the vacuum container due to the conductive adhesion wear powder. have.

Still another object is to form a cover member as a bellows and a conductive member as a pipe-shaped conductive bellows to smoothly connect the conductive rod and the load side conductor for the contact and disconnection operation between the power supply side conductor and the conductive rod. It is to provide a switchgear that can be easily followed.

1 is a side view showing the configuration of Example 1 of a flexible conductor according to the present invention.

FIG. 2 is a plan view of the flexible conductor shown in FIG. 1. FIG.

Figure 3 is a side view showing the configuration of Example 2 of a flexible conductor according to the present invention.

Figure 4 is a side view showing the configuration of Example 3 of a flexible conductor according to the present invention.

FIG. 5 is a plan view of the flexible conductor shown in FIG. 4. FIG.

6 is a side view showing the configuration of Example 4 of a flexible conductor according to the present invention.

7 is a side view showing the configuration of Example 5 of a flexible conductor according to the present invention.

8 is a plan view of the flexible conductor illustrated in FIG. 7.

9 is a side view showing the configuration of Example 6 of a flexible conductor according to the present invention.

10 is a side view showing the configuration of Example 7 of a flexible conductor according to the present invention.

11 is a side view showing the configuration of Example 8 of a flexible conductor according to the present invention.

12 is a side view showing the configuration of Example 9 of a flexible conductor according to the present invention.

13 is a side view showing the configuration of Example 10 of a flexible conductor according to the present invention.

14 is a side view showing the configuration of Example 11 of a flexible conductor according to the present invention.

FIG. 15 is a plan view shown in FIG. 14.

Fig. 16 is a side view showing the construction of Example 12 of a flexible conductor according to the present invention.

17 is a side view showing the configuration of Example 13 of a flexible conductor according to the present invention.

FIG. 18 is a plan view of the flexible conductor shown in FIG. 17. FIG.

Fig. 19 is a side view showing the construction of Example 14 of a flexible conductor according to the present invention.

20 is a plan view of the flexible conductor shown in FIG. 19.

Fig. 21 is a side sectional view showing the main part structure of the switchgear.

Fig. 22 is a side sectional view showing the main part structure of the switchgear.

23 is a side view of a conventional flexible conductor.

Fig. 24 is a schematic side sectional view showing the main parts of the switch gear according to the fifteenth embodiment of the present invention.

Fig. 25 is a schematic side cross-sectional view showing the main components of the switch gear according to the sixteenth embodiment of the present invention.

Fig. 26 is a schematic side cross-sectional view showing the main components of the seventeenth embodiment of the switchgear according to the present invention.

Fig. 27 is a schematic side sectional view showing the main parts of the switch gear according to the eighteenth embodiment of the present invention.

Fig. 28 is a schematic side sectional view showing the main structure of Example 19 of a switchgear according to the present invention.

Fig. 29 is a schematic side sectional view showing the main components of the switch gear according to the twelfth embodiment of the present invention.

30 is a schematic side sectional view showing the main part structure of another conventional switchgear.

Fig. 31 is a schematic side sectional view showing the main part structure of another conventional switchgear.

<Explanation of symbols for main parts of drawing>

1: flexible conductor 1a: flexible part

1b: fixing part 10a: conductor metal layer

10b: adhesion layer 10c: protrusion

10d: spacer plate 10e: regulatory plate

20: vacuum vessel 21: bus bar side conductor

22: busbar bushing 24: high conductor

25: movable conductor (main circuit opening and closing part) 33: load side conductor

34: cable bushing 39: ground opening

40: flexible conductor 41: sliding contact

51: first cover member 52: second cover member

53: third cover member 54: fourth cover member

61: third bellows 62: fourth bellows

63: fifth bellows

In the flexible conductor according to the present invention, a plurality of conductor metal layers are laminated by interposing an adhesion preventing layer between them to form a flexible portion.

In the present invention, when a plurality of conductor metal layers are warped and deformed, sliding contact is made through the adhesion preventing layers interposed therebetween, and loss of flexibility due to adhesion between each other is prevented without direct contact.

Therefore, when the bending deformation occurs according to the displacement of the movable conductor connected to one side, the conductor metal layer is in sliding contact with the adhesion preventing layer interposed therebetween, and does not directly contact each other.

In order to use a flexible conductor in a vacuum, the displacement of the movable conductor with respect to the high conductor can be stably allowed for a long time without adhesion of the conductive metal layer and loss of flexibility.

In the flexible conductor according to the present invention, an adhesion prevention layer is formed of a carbon sheet, an inorganic powder, or a metal film interposed between the conductive metal layers.

In these inventions, in general, an anti-adhesion layer interposed between conductor metal layers composed of copper foil is formed of a material which is less likely to cause a diffusion reaction against copper, such as carbon sheets, inorganic powders such as boron nitride and alumina, and stainless foil. In addition, adhesion loss between the conductor metal layer and the adhesion prevention layer is prevented from occurring as well as adhesion between the conductor metal layers.

The adhesion prevention layer by inorganic powder is formed by apply | coating the coating agent obtained by mixing the said inorganic powder with solvents, such as alcohol, to one side or both surfaces of copper foil which forms a conductor metal layer.

In the flexible conductor according to the present invention, an anti-adhesion layer is formed by a plating film formed on one surface or both surfaces of each conductive metal layer.

In the present invention, one or both surfaces of the conductive metal layer are plated with a metal from which a stable oxide film is obtained as compared with copper, which is a material of a conductive metal layer such as nickel and chromium, and the plating films thus obtained are in sliding contact with each other. It prevents the occurrence of adhesion by and suppresses the loss of flexibility.

Therefore, the plated film is formed of a metal which has a stable oxidation, thereby preventing adhesion of the conductor metal layer caused by sliding contact and suppressing the loss of flexibility.

In the flexible conductor according to the present invention, the fixing parts provided on both sides of the flexible part are formed by stacking conductor metal layers in the thickness direction.

In this invention, the fixed parts on both sides of the flexible part are formed by contacting the conductive metal layers without interposing the adhesion preventing layer, and the resistivity of the entire flexible conductor in the use state in which these fixing parts are fixed to the fixed conductor or the movable conductor. It is possible to reduce the resistance to ensure good conductivity.

Therefore, the contact resistance of the fixed portion can be reduced and good conductivity can be ensured.

In the flexible conductor according to the present invention, a flexible portion is formed by stacking a plurality of metal conductor layers having protrusions on one or both surfaces in a thickness direction.

In the present invention, a flexible portion is formed by stacking at an interval corresponding to the height equivalent of the protrusions provided on each of the plurality of conductive metal layers, and when the flexible portion is bent and deformed, each conductive metal layer is generated at a limited portion of the tip of each protrusion. In this way, adhesion due to the sliding contact is minimized and loss of flexibility is suppressed.

Therefore, the conductive metal layers are provided with a gap corresponding to the height of each protrusion, and when the flexible part is deformed, the conductive metal layers are in sliding contact with each other only at a limited portion of the tip of the protrusion to minimize adhesion due to sliding contact.

In the flexible conductor according to the present invention, the fixing parts provided on both sides of the flexible part are formed by diffusion-bonding conductor metal layers.

In the present invention, a state in which the fixing parts on both sides of the flexible part are in contact with the conductive metal layers without interposing the adhesion preventing layer or the projection, and the diffusion metals are formed at each interface, and the fixing parts are fixed to the high conductor or the movable conductor. This reduces the resistivity of the entire flexible conductor and ensures good conductivity.

Diffusion bonding is performed by heat treatment in a compressed state by tightening a fixing bolt for attachment to a fixed part.

Therefore, the contact resistance of the fixed part is significantly reduced, the resistivity of the entire flexible conductor is also reduced, and good conductivity can be ensured.

In the flexible conductor according to the present invention, a plurality of conductive metal layers are laminated on both sides of the conductive metal layers with a space between them, to form a flexible portion.

In the present invention, the conductive metal layers forming the flexible portions are not in contact with each other, and when the flexible portions are deflected and deformed, no sliding contact of each conductive metal layer occurs, and adhesion can be minimized and loss of flexibility can be suppressed.

In addition, by using the conductive metal as the spacer, it is possible to reduce the resistivity of the entire flexible conductor in the use state and to ensure good conductivity.

Therefore, the conductive metal layers forming the flexible portion do not come into contact with each other, and the conductive metal layers do not slide in contact with each other when deformation occurs in accordance with the displacement of the movable conductor connected to one side.

In order to use flexible conductors in a vacuum, displacement to the movable conductors for the fixed conductors can be stably allowed over a long period of time without loss of flexibility and adhesion of the conductor metal layer.

In the flexible conductor according to the present invention, the fixing parts provided on both sides of the flexible part are formed by diffusion bonding only the conductor metal layer and the spacer.

In the present invention, each of the fixing parts on both sides of the flexible part is formed by diffusion bonding between the conductive metal layer and the spacer plate interposed therebetween, and the flexible part includes the fixing part in a use state in which these fixing parts are fixed to the ceramic or movable conductor. Good electrical conductivity is ensured by reducing the resistivity of the entire conductor.

Diffusion bonding is realized by heat treatment in the state of compression bonding the conductor metal layer and the spacer plate by tightening the fixing bolt to attach to the fixing part.

Therefore, the contact resistance of the fixed part is significantly reduced, the resistivity of the entire flexible conductor is reduced, and good conductivity can be ensured.

In the flexible conductor according to the present invention, the wire rod of the conductor metal is formed in a mesh shape, and both sides of the thickness direction are sandwiched by a restricting plate to form a flexible portion.

In the present invention, thin wires made of conductive metal are combined in a mesh shape, and the unwinding of the mesh is regulated by a regulating plate to form a flexible part, and when the flexible part is deflected by limited sliding contact between the thin wires. The loss of flexibility is suppressed by minimizing the adhesion range.

Therefore, the adhesion caused by the sliding contact when the deformation occurs according to the displacement of the movable conductor connected to one side and the sliding contact in the conductive metal layer occur only at the connecting portion of the wire rod.

In addition, the loss of flexibility can be effectively suppressed and the displacement of the movable conductor with respect to the high conductor can be tolerated stably over a long period of time.

The flexible conductor according to the present invention is configured by diffusing and joining wire rods having a mesh shape at both sides of the flexible part which protrude from fixing plates provided on both sides of the flexible part.

In the present invention, the fixing parts on both sides of the flexible part protrude one part of the flexible part on both sides of the regulating plate, and the wire rods of the conductor metal constituting the mesh shape constituting the flexible part are diffusely bonded at each contact part to constitute them. In the use state in which the fixed part is fixed to the fixed conductor or the movable conductor, the resistivity of the entire flexible conductor including the fixed part is reduced to ensure good conductivity.

Diffusion bonding is obtained by heat treatment in a state where wires are in close contact with each other by tightening fixing bolts to attach to a fixed part.

Therefore, the fixing portion having the reduced contact resistance can be easily formed, the resistivity of the entire flexible conductor can be reduced, and good conductivity can be ensured.

The switchgear according to the present invention is formed by stacking a power side conductor, a conductive rod contacting and separating the power side conductor, a load side conductor, and a conductive metal foil in a vacuum container, and connecting the load side conductor and the conductive rod to the flexible conductor. And covering the flexible conductor and having a flexible cover member fixed in an airtight state to each of the conductive rod and the load side conductor, wherein a gas containing oxygen or nitrogen is enclosed in the cover member. .

In this invention, the surface of a flexible conductor is fixed by fixing the cover member which made the airtight state over the load side conductor, and the electrically conductive rod which contacts and isolates a cover member from a power supply side conductor, and seals the gas containing oxygen or nitrogen inside the cover member. An oxide or nitride film can be formed on the film, and adhesion to the flexible conductor can be suppressed.

In addition, since the flexibility of the flexible conductor is not impaired, it can follow the operation of the conductive rod smoothly. For example, even when the adhesive wear powder is produced, the flexible conductor is covered with the cover member, without contaminating the inside of the vacuum container. The reliability of the withstand voltage performance can be improved.

Therefore, it is possible to preserve good flexibility and elasticity in the flexible conductor, to prevent the occurrence of adhesion wear powder, to prevent contamination of the adhesion wear powder in the vacuum container, and to maintain the withstand voltage performance safely, and the switch according to the present invention. The gear is formed in a vacuum vessel in which an opening is provided, a conductive rod for contacting and separating the power supply side conductor and the power supply side conductor, a connecting conductor connected to the conductive rod, and an opening of the vacuum vessel and the connection so as to keep the vacuum container airtight. A cover member having flexibility fixed over the conductor is provided, and the connecting member and the load side conductor outside the vacuum vessel are connected by a flexible conductor formed by laminating conductive metal foils. do.

In this invention, in order to make a vacuum container airtight, the cover member which has flexibility is fixed to the connection conductor connected to a power supply side conductor, and the opening part of the side of a vacuum container, and through this cover member, a flexible conductor is made to load side other than a vacuum container. Since the conductor is connected to the conductor, the flexible conductor itself can be installed outside the vacuum vessel, and adhesion can be prevented from occurring to stabilize the withstand voltage performance.

According to the switchgear of the present invention, since the flexible conductor is installed outside the vacuum container, adhesion can be prevented from occurring in the flexible conductor and the operation can be stabilized.

In addition, since the generation of the adhesion wear powder can be prevented, the inside of the vacuum container is not contaminated with the adhesion wear powder and the voltage resistance performance can be stabilized.

The switchgear according to the present invention has a tubular shape having elasticity that is fixed across a power supply side conductor, a conductive rod contacting and separating the power supply side conductor, a load side conductor, and the load side conductor and the conductive rod in a vacuum container. Characterized in that the conductive member is installed.

In this invention, by adhering a tubular conductive member having flexibility and elasticity between the conductive rod and the load side conductor, generation of the adhering body and the adhering wear powder can be prevented, so that the inside of the vacuum container is not contaminated and the withstand voltage is avoided. Performance is stable.

Therefore, since the adhesion is not generated and the concern about contamination inside the vacuum container due to the adhesion wear powder is eliminated, the voltage resistance performance can be stabilized.

The switchgear according to the present invention is characterized in that the cover member is a bellows.

The switchgear according to the present invention is characterized in that the conductive member is a bellows formed of a conductive material.

In this invention, by using a bellows, it is possible to follow smoothly while preserving the airtightness inside by the operation of the conductive rod contacting and separating the power supply side conductor.

The switchgear of the present invention allows the use of the bellows to preserve the internal airtight state and smoothly follow the operation of the conductive rod for contacting and separating the power line and load electrode.

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described according to the accompanying drawings.

Example 1

1 and 2 are a side view and a plan view showing the structure of the flexible conductor of Example 1 according to the present invention, respectively.

In these drawings, the flexible conductor 1 includes a flexible portion 1a in which a plurality of conductive metal layers 10a, 10a ... and a plurality of adhesion preventing layers 10b, 10b ... are laminated to each other in the thickness direction and the flexible portion ( It consists of the fixing | fixed parts 1b set to both sides of 1a).

The fixing parts 1b and 1b are fixed conductors 24 and movable conductors 25 by two fixing bolts 27 and 27 through a press plate 26 over the entire length. It is fixed by tightening each.

For example, a copper foil having a thickness of 100 µm is used as the conductive metal layers 10a, 10a, ..., and a carbon sheet or a stainless foil having a thickness of about 50-100 µm as the adhesion preventing layers 10b, 10b. A thin material made of a material hard to adhere with a sliding contact to copper (Cu), which is a general material of the conductive metal layers 10a, 10a, etc., is used.

The flexible part 1a consists of the required number of copper foils which set carbon sheet or stainless foil between copper foils, and laminated | stacked in the thickness direction.

Fig. 1 shows the conductor metal layers 10a, 10a ... and the anti-adhesion layers 10b, 10b ..., and is shown as being laminated by setting a gap between these layers, but they are actually laminated in close contact with each other. have.

The lamination ranges of the adhesion preventing layers 10b, 10b ... are set at both sides in the longitudinal direction to a predetermined length over the entire length of the conductor metal layers 10, 10a ... as shown by hatching in FIG. (1b) is constructed by directly stacking the conductive metal layers 10a, 10a ... at the non-laminated portions of the adhesion preventing layers 10b, 10b ..., respectively.

The press plate 26 is a flat plate of a size capable of covering the entirety of the fixing portion 1b.

The press plate 26 is tightened to the fixing bolts 27 and 27 to uniformly press the corresponding fixing portion 1b between the high conductor 24 or the movable conductor 25.

Moreover, the displacement of the carbon sheet or stainless foil which comprises the adhesion prevention layer 10b, 10b ... in the flexible part 1a is prevented.

Fig. 1 shows the conductor metal layers 10a, 10a ..., and these layers are laminated on the fixing part 1b as if a gap is set between these layers, but the conductor metal layers 10a, 10a ... The contact between the press plate 26 and the high conductor 24 or the movable conductor 25 is strongly adhered to each other to reduce the contact resistance.

The fixing portions 1b and 1b are joined by the fixing bolts 27 and 27 and heated at about 500 ° C., so that the conductive metal layers 10a, 10a ... are diffused and bonded at the contact surface and contact resistance is also increased. Can be reduced.

When the movable conductor 25 can be displaced in the up and down direction with respect to the fixed conductor 24, the flexible conductor 1 maintains the conduction state between the fixed conductor 24 and the movable conductor 25 as described above. It is possible to allow displacement of the movable conductor 25 due to the deformation of the flexible portion 1a while maintaining it.

When such deformation occurs, the laminated layers constituting the flexible portion 1a make sliding contact with each other.

However, the flexible portion 1a is constituted by alternately stacking the conductive metal layers 10a, 10a ... and the adhesion preventing layers 10b, 10b ... as described above, and the sliding contact is bonded with the conductive metal layer 10a. It occurs at the interface between the prevention layers 10b.

The fear that the conductive metal layers 10a, 10a ... make sliding contact with each other and adheres to each other is avoided, and thereby the loss of flexibility is suppressed.

Since the carbon sheet or stainless foil constituting the anti-adhesion layer 10b is a material which is unlikely to cause diffusion reaction with the copper foil constituting the conductor metal layer 10a, respectively, the conductive metal layers 10a, 10a... And the anti-adhesion layers 10b, 10b. There is no fear of adhesion between the…).

Therefore, when the flexible conductor 1 shown in the description of Example 1 is used in vacuum, it may have inherent flexibility over a long period of time, and reliably permits displacement of the movable conductor 25 with respect to the fixed conductor 24. can do.

Both fixing parts 1b and 1b of the flexible part 1a are formed by bringing the conductive metal layers 10a, 10a ... in close contact without interposing the adhesion preventing layers 10b, 10b. Decrease.

Therefore, as shown in the drawing, in the use state where the high conductor 24 and the movable conductor 25 are connected, the resistivity of the flexible conductor 1 as a whole can be reduced to ensure good conductivity, resulting in the passage of current. It is possible to reduce the calorific value.

This can be more effectively achieved by diffusing and joining the conductive metal layers 10a, 10a ... as described above.

1 and 2 illustrate the configuration of the flexible conductor 1 connecting the high conductor 24 and the movable conductor 25 in a straight line, the conductive metal layers 10a, 10a... And the anti-adhesion layers 10b, 10b. ) Is laminated in a pre-bent state to form a flexible portion 1a, so that in the switchgear shown in Figs. 21 and 22, a load conductor 11 as a high conductor 24 and a movable electrode as a movable conductor 25 are formed. It can be used for the connection of (6).

This also applies to the following examples.

Example 2

3 is a side view showing the configuration of the flexible conductor of Example 2 of the present invention.

As shown in the figure, the flexible conductor 1 includes a flexible portion 1a formed by alternately stacking conductive metal layers 10a, 10a ... and anti-adhesion layers 10b, 10b ..., and both sides of the flexible portion 1a. The fixing portions 1b and 1b in which only the conductive metal layers 10a, 10a.

This embodiment is characterized by a connection form between the fixed portions 1b and 1b and the fixed conductor 24 and the movable conductor 25.

As shown in Fig. 3, the joining is performed by beam-welding the joining portions 1b and 1b to the end faces of the high conductor 24 and the movable conductor 25. .

By this configuration, a strong bonding state is obtained between the high conductor 24 and the movable conductor 25, and the fixed portions 1b and 1b, so that the contact resistance at the bonded portion can be reduced. By heating, the conductive metal layers 10a, 10a ... constituting the fixing portions 1b and 1b are diffused and joined to further reduce their contact resistance.

Since the resistivity of the whole flexible conductor 1 whole falls, favorable electroconductivity can be obtained and the amount of heat generation accompanying current carrying can be reduced.

Example 3

4 and 5 are a side view and a plan view respectively showing the structure of the flexible conductor of Example 3 according to the present invention.

In the figure, the flexible conductor 1 alternates the plurality of conductor metal layers 10a, 10a ... and the plurality of anti-adhesion layers 10b, 10b ... like the flexible conductor 1 shown in Figs. It consists of the flexible part 1a laminated | stacked and comprised, and the fixing part 1b and 1b set to both sides of the flexible part 1a.

The fixing portions 1b and 1b strongly fasten the high conductor 24 and the movable conductor 25 by two fixing bolts 27 and 27 through the press plate 26 over the entire length. .

As an example, a copper foil with a thickness of about 100 μm is used as the conductor metal layers 10a, 10a... As shown in FIGS. 1 and 2.

However, unlike the examples shown in Figs. 2 and 2 as the anti-adhesion layers 10b, 10b, respectively, which are set between the conductive metal layers 10a and 10a, inorganic powders such as silicon nitride and alumina are mixed to form alcohols. In the solvent, a coating agent having a particle diameter of about 1-10 μm is applied to one or both surfaces of the copper foil forming the conductive metal layers 10a, 10a, and the conductive metal layers 10a, 10a, which are treated with the coating agent, in the thickness direction. By laminating, the inorganic powder is set between the conductor metal layers 10a and 10a.

The lamination ranges of the adhesion preventing layers 10b, 10b, ... are almost the entire length of the conductor metal layers 10a, 10a, as shown in Fig. 5, and are set with both sides in the longitudinal direction at a predetermined length.

This can be easily achieved by uniformly setting the treatment range of the coating agent in each of the conductive metal layers 10a, 10a...

Since the fixing parts 1b and 1b are fixed to the fixed conductor 24 and the movable conductor 25 as in the first embodiment, detailed description thereof will be omitted.

As above, the flexible conductor 1 allows the displacement of the movable conductor 25 with respect to the fixed conductor 24 by the deformation of the flexible portion 1a.

At this time, each of the conductive metal layers 10a, 10a ... is in sliding contact with the anti-condensation layers 10b, 10b, which are laminated on both sides of the conductive metal layers 10a, 10a, and the sliding contact of the conductive metal layers 10a, 10a. There is almost no risk of condensation accompanying contact, and thereby the loss of flexibility is suppressed, and the displacement of the movable conductor 25 with respect to the high conductor 24 can be reliably allowed.

The fixing portions 1b and 1b on both sides of the flexible portion 1a are formed by bringing the conductive metal layers 10a, 10a ... in close contact with each other without interposing the adhesion preventing layers 10b, 10b. Reduce resistance.

Therefore, as shown in the figure, in the use state where the high conductor 24 and the movable conductor 25 are connected, the resistivity of the entire flexible conductor 1 can be reduced to obtain good conductivity, and the current flows along. The amount of heat generated can be reduced.

This is more effectively achieved by heating the vicinity of the fixing portions 1b and 1b to diffusely bond the conductor metal layers 10a, 10a...

Example 4

6 is a side view showing the configuration of the flexible conductor of Example 6 according to the present invention.

In this figure, the flexible conductor 1 is the same as the configuration of the flexible conductor of Example 3, and the fixing parts 1b and 1b and the fixed conductor 24 and the movable conductor 25 are the same as those of the second embodiment. Similarly, these joints are connected by beam welding.

Example 5

7 and 8 are a side view and a plan view respectively showing the configuration of the flexible conductor of Example 5 according to the present invention.

In the figure, the flexible conductor 1 alternately has a plurality of conductive metal layers 10a, 10a... And a plurality of anti-condensation layers 10b, 10b..., Like the flexible conductor 1 shown in FIGS. 1 and 2. It consists of the flexible part 1a laminated | stacked in the direction, and the fixed part 1b and 1b set in the both sides of the flexible part 1a.

The fixing parts 1b and 1b are tightened by two fixing bolts 27 and 27 respectively through the press plate 26 over the entire length of the fixed conductor 24 and the movable conductor 25. It is fixed.

Copper foil having a thickness of about 100 µm is used as the conductor metal layers 10a, 10a ... as shown in Figs.

However, the adhesion preventing layers 10b, 10b... Set between the conductive metal layers 10a and 10a, respectively, are different from those shown in FIGS. 1 and 2, and different from those shown in FIGS. 4 and 5. One of the conductive metal layers 10a, 10a, etc. having a thickness of about 1-10 탆 is made of a plated film made of metal which produces more stable oxides compared to copper used as the material of the conductive metal layers 10a, 10a, such as Cr). Each of the conductive metal layers 10a, 10a, ... formed on the surface and on which the plating film is formed is laminated in the longitudinal direction, so that the plating film is set between the conductive metal layers 10a and 10a.

7 shows that the adhesion preventing layers 10b, 10b.... And the conductive metal layers 10a, 10a..., Which are made of a plating film are stacked with a gap therebetween.

The lamination ranges of the adhesion preventing layers 10b, 10b ... are set with the predetermined lengths of both sides in the longitudinal direction over almost the entire length of the conductor metal layers 10a, 10a ... as shown by hatching in FIG.

This can be easily accomplished by setting the formed film range of the plated film of each of the conductive metal layers 10a, 10a ... to the same.

Since the fixing parts 1b and 1b are fixed to the high conductor 24 and the movable conductor 25 as in Embodiments 1 and 3, detailed description thereof will be omitted.

As described above, the flexible conductor 1 may allow displacement of the movable conductor 25 with respect to the fixed conductor 24 by the deformation of the flexible portion 1a.

At this time, each of the conductive metal layers 10a, 10a ... is in sliding contact with the adhesion preventing layers 10b, 10b. There is almost no risk of contact and subsequent adhesion, and when the flexible conductor 1 is used under vacuum, the loss of flexibility due to adhesion is suppressed and the displacement of the movable conductor 25 with respect to the high conductor 24 is reliable. Can be allowed.

As described above, since the adhesion preventing layers 10b and 10b are plated films formed of metals that produce stable oxides such as nickel (Ni) or chromium (Cr), the oxide films formed on the surfaces thereof are formed of conductive metal layers 10a and 10a. There is little degree of removal by sliding contact with…).

Therefore, there is little possibility of adhesion between the conductive metal layers 10a, 10a ... and the anti-adhesion layers 10b, 10b ... due to the sliding contact, and inherent flexibility even when the flexible conductor 1 is used under vacuum. Intact and maintained for a long time

The fixing parts 1b and 1b on both sides of the flexible part 1a are formed by bringing the conductive metal layers 10a and 10a into close contact with each other without setting the anti-condensation layers 10b and 10b. Lowers.

Thus, as shown in the drawing, the resistivity of the entire flexible conductor 1 is lowered in the use state in which the high conductor 24 and the movable conductor 25 are connected, thereby ensuring excellent conductivity and accompanying current conduction. The amount of heat generated can be reduced.

This can be achieved more effectively by heating the vicinity of the fixing portions 1b and 1b to ensure and join the conductor metal layers 10a, 10a...

Example 6

9 is a side view showing the configuration of the flexible conductor of Example 6 according to the present invention.

In the figure, the flexible conductor 1 is the same as that of the flexible conductor of Example 5, and the fixing parts 1b and 1b and the fixed conductor 24 and the movable conductor 25 As described above, the joints are connected by beam welding.

Example 7

10 is a side view showing the configuration of the flexible conductor of Example 7 according to the present invention.

In the figure, the flexible conductor 1 includes a flexible portion 1a formed by stacking a plurality of conductive metal layers 1a, 1a, ... in the thickness direction, a fixed portion 1b set on both sides of the flexible portion 1a, and It consists of (1b).

The fixing portions 1b and 1b are fastened by fixing bolts 27 through a press plate 26 extending over the entire length of the high conductor 24 and the movable conductor 25.

The conductor metal layers 10a, 10a ... have a plurality of protrusions 10c, 10c ... set on each surface thereof, and as shown in the drawing, the faces of these protrusions 10c, 10c face the east side, and their protrusions ( The tips of 10c and 10c are brought into contact with opposing surfaces of the conductive metal layers 10a adjacent to each other, and the conductive metal layers 10a and 10a are laminated with a gap corresponding to the height of each projection 10c. The part 1a is comprised.

The protrusions 10c and 10c are projected in a V shape over the entire length by press molding of a copper foil having a thickness of about 100 μm, which is used as the conductor metals 10a, 10a ..., or dimples arranged in suitable gaps ( It can be formed into a suitable form such as dimples) form.

The fixing portions 1b and 1b are fixed to the fixed conductor 24 and the movable conductor 25 in the same manner as in Embodiments 1, 3, and 5, and thus detailed description thereof will be omitted.

As described above, the flexible conductor 1 allows the displacement of the movable conductor 25 with respect to the fixed conductor 24 by the deformation of the flexible portion 1a.

At this time, each conductive metal layer (10a, 10a ...) is in sliding contact with the conductive metal layers (10a) and (10a) laminated on each side, the sliding contact is described above in each of the conductive metal layers (10a, 10a ...) It occurs only at the site where the tip ends of the protrusions 10c, 10c ... formed as described above are limited.

Therefore, in order to use the flexible conductor 1 in a vacuum, the adhesion range generated by the sliding contact of the conductive metal layers 10a, 10a ... is limited to the distal ends of the protrusions 10c, 10c. It is possible to effectively suppress the displacement of the movable conductor 25 with respect to the high conductor 24.

In addition, in the fixing portions 1b and 1b on both sides of the flexible portion 1a, the fixing bolts 27 are fixed by tightening the fixing bolts 27 through the press plate 26 so that the conductive metal layers 10a, 10a ... are brought into close contact with each other. Reduce resistance.

In this manner, as shown in the drawing, in the use state in which the high conductor 24 and the movable conductor 25 are connected, the specific resistance of the entire flexible conductor 1 can be reduced and good conductivity can be ensured. It is possible to reduce the amount of heat associated with energization.

This can be more effectively achieved by heating the vicinity of the fixing portions 1b and 1b to diffusely join the conductor metal layers 1a, 10a...

Example 8

11 is a side view showing the configuration of the flexible conductor of Example 8 according to the present invention.

In the figure, the flexible conductor 1 is the same as that of the flexible conductor of the seventh embodiment, and the fixing parts 1b and 1b and the fixed conductor 24 and the movable conductor 25 are the examples 2, 4 and 6 As in the above, these joints are connected by beam welding.

Example 9

12 is a side view showing the configuration of the flexible conductor of Example 9 of the present invention.

In the drawing, the flexible conductor 1 includes a flexible portion 1a formed by stacking a plurality of conductive metal layers 10a, 10a... In the width direction, and conductive metal layers 10a, 10a... On both sides of the flexible portion 1a. Fixing portions 1b and 1b formed of spacer plates 10d, 10d... Set in between are constituted.

The fixing portions 1b and 1b are fixed conductors 24 and movable conductors 25 by fixing bolts 27 together with spacer plates 10d, 10d... Through the press plates 26 over the entire length. Tighten to secure.

In this state of use, the conductive metal layers 10a, 10a ... constituting the flexible portion 1a are formed by placing spacer plates 10d, 10d ... between the conductive metal layers 10a, 10a ... at the fixing portions 1b and 1b. Since the respective settings are made, they are stacked without any direct contact with each other with a predetermined gap therebetween.

The fixing portions 1b and 1b are fixed to the fixed conductor 24 and the movable conductor 25 as in Embodiments 1, 3, 5 and 7.

When the fixing parts 1b and 1b are fixed, the spacer plates 10d, 10d ... fastened together with the conductor metal layers 10a, 10a ... are fixed to the same conductive metal as the conductor metal layers 10a, 10a ... The contact resistance is reduced.

As described above, the flexible conductor 1 allows the displacement of the movable conductor 25 with respect to the fixed conductor 24 by the deformation of the flexible portion 1a.

At this time, the conductive metal layers 10a, 10a ... constituting the flexible part 1a are laminated with a predetermined gap therebetween, so that sliding contact hardly occurs between each other.

Therefore, even if the flexible conductor 1 is used under vacuum, there is no fear of adhesion of the conductive metal layers 10a, 10a, and the original flexibility can be maintained over a long period of time. 25) can be reliably allowed for displacement.

In addition, in the fixing portions 1b and 1b on both sides of the flexible portion 1a, the conductive metal layers 10a, 10a ... are set between them by tightening and fixing the fixing bolts 27 through the press plate 26. The contact plates are in close contact with each other through the spacer plates 10d, 10d ... made of conductive metal.

Therefore, as shown in the drawing, in the use state where the high conductor 24 and the movable conductor 25 are connected, the resistivity of the entire flexible conductor 1 can be reduced and good conductivity can be ensured, and the current flows. The amount of heat generated can be reduced.

This is further heated by heating the vicinity of the fixing portions 1b and 1b to about 500 ° C, and diffusing and bonding the conductor metal layers 10a, 10a ... together with the spacer plates 10d, 10d ... respectively set therebetween. Can be achieved effectively.

Example 10

Fig. 13 is a side view showing the structure of the flexible conductor of Example 10 according to the present invention.

In the figure, the flexible conductor 1 is the same as the structure of the flexible conductor of Example 9. As shown in FIG.

The fixed portions 1b and 1b, the fixed conductor 24 and the movable conductor 25 are connected by beam welding their joints as in the second, fourth, sixth and eighth embodiments.

Example 11

14 and 15 are a side view and a plan view respectively showing the configuration of the flexible conductor of Example 11 according to the present invention.

The flexible conductor 1 shown in the drawing has a mesh-like conductor metal layer 10a made of a thin wire made of an equivalent conductor metal, which is made of a metal having a low risk of adhesion to copper such as stainless steel on both sides thereof. It consists of a flexible part set between regulation plates 10e and 10e, and a fixing part formed by projecting the conductor metal layers 10a on both sides of the regulation plates 10e and 10e.

These fixing parts are fastened to the high conductor 24 and the movable conductor 25 by fixing bolts 27 through the press plate 26 over the entire length, and the flexible part is movable with the high conductor 24 at both ends. The conductor 25 is fixed together with the restricting plates 10e and 10e by means of a fixing bolt 29 through the press plate 28 over the entire length.

As described above, the flexible conductor 1 allows the displacement of the movable conductor 25 with respect to the fixed conductor 24 by the deformation of the mesh-shaped conductor metal 10a forming the flexible portion.

At this time, inside the conductive metal layer 10a, wires having a thin mesh shape may make sliding contact with each other, and adhesion may occur at the sliding contact portion.

However, the adhesion range is limited to the point contact parts between the wires so that the flexibility in the flexible part is not impaired.

Therefore, even when the flexible conductor 1 under vacuum is used, the original flexibility can be maintained for a long time, and the displacement of the movable conductor 25 with respect to the high conductor 24 can be reliably allowed.

The regulating plates 10e and 10e for setting the conductor metal layer 10a on both sides are made of a conductive metal layer 10a because the mesh forming the conductor metal layer 10a is loosened due to the deformation of the movable conductor 25. When the wires forming part of the conductor metal layer 10a are cut to protrude to the outside by regulating the shape change of the c), the regulating plates 10e and 10e are generated around the cutting wire. The electric field is relaxed to maintain the internal pressure inside the vacuum vessel.

As shown in Fig. 15, in the restricting plates 10e and 10e that function effectively, each of the restricting plates 10e has a wider width than the conductive metal layer 10a, and the mesh of the conductive metal layer 10a. It extends outward to the length of 2-3 times the space | interval.

In addition, the regulating plates 10e and 10e are thin plates made of stainless steel and do not prevent deformation of the movable conductor 25, and adhesion occurs between the regulating plates 10e and 10e and the conductor metal layer 10a. I never do that.

In addition, at the fixing portions on both sides of the flexible conductor 1, the fixing bolt 27 is tightened and fixed through the press plate 26 to crush the mesh forming the conductor metal layer 10a, and the wires are crushed together. Close contact reduces contact resistance.

Therefore, as shown in the drawing, in the use state in which the high conductor 24 and the movable conductor 25 are connected, the resistivity of the entire flexible conductor 1 is lowered to ensure good conductivity, and the current flows along. The amount of heat generated can be reduced.

This can be more effectively achieved by heating the vicinity of the fixing part to about 500 ° C. to diffuse and bond the wires forming the conductor metal layer 10a.

Example 12

Fig. 16 is a side view showing the configuration of the flexible conductor of Example 12 according to the present invention.

In the figure, the flexible conductor 1 is the same as that of the flexible conductor of the eleventh embodiment, and the fixing parts 1b and 1b and the fixed conductor 24 and the movable conductor 25 are the examples 2, 4, As in 7,8 and 10, these joints are connected by beam welding.

By performing the beam welding at the ends of the restricting plates 10e and 10e, the action of the restricting plates 10e and 10e can be ensured as in the twelfth embodiment.

Example 13

17 and 18 are a side view and a plan view respectively showing the configuration of the flexible conductor of Example 13 according to the present invention.

In the figure, the flexible conductor 1 represents a modification of the first embodiment.

This example has a flexible portion 1a formed by alternately stacking a plurality of conductor metal layers 10a, 10a ... and a plurality of adhesion preventing layers 10b, 10b ... in a thickness direction, and on both sides of the flexible portion 1a. It consists of the fixed part 1b and 1b which were set.

The fixing portions 1b and 1b are fixed by tightening the fixed conductor 24 and the movable conductor 25 with two fixing bolts 27 and 27 through the press plate 26 over the entire length. .

As shown in Fig. 17, a strainless foil formed in a wave shape as the adhesion preventing layers 10b, 10b ... is set between the conductor metal layers 10a, 10a ... and fixed plate penetrates through both ends thereof. It is fixed to the ends of the fixed conductor 24 and the movable conductor 25 through 26 to prevent displacement.

As shown in FIG. 18, the adhesion preventing layers 10b, 10b... Are set with margins on both sides of the width direction of the conductor metal layers 10a, 10a.

In the portions where the adhesion preventing layers 10b, 10b… are not set, the conductive metal layers 10a, 10a… have a significant gap in the height of each of the anti-adhesion layers 10b, 10b… formed in a wave shape and face each other. There is no fear that (10a, 10a ...) will cause sliding contact and adhesion to each other.

As in Example 1, a carbon sheet may be used instead of the stainless foil.

In the fixing portions 1b and 1b on both sides of the flexible portion 1a, the conductive metal layers 10a, 10a ... can be fixed to the fixing bolts 27 through the press plate 26 to be in close contact with each other. Decrease.

As described above, in the use state shown in the drawing, the resistivity of the entire flexible conductor 1 is lowered to ensure good conductivity, and the amount of heat generated by energization of the current can be reduced.

This can be more effectively achieved by heating the vicinity of the fixing portions 1a and 1a to about 500 ° C to diffuse and bond the conductor metal layers 10a, 10a...

Example 14

19 and 20 are a side view and a plan view respectively showing the configuration of the flexible conductor of Example 14 according to the present invention.

Like the flexible conductor 1 of Example 13, the flexible conductor 1 in the drawing shows a modification of the first embodiment.

In this embodiment, the flexible portions 1a and the flexible portions 1a formed by alternately depositing a plurality of conductive metal layers 10a, 10a ... and a plurality of adhesion preventing layers 10b, 10b ... in the thickness direction are alternately deposited. The fixed part 1b and 1b which were set are comprised.

The fixing parts 1b and 1b are fastened to the respective fixed conductors 24 and the movable conductors 25 by two fixing bolts 27 and 27 through the press plate 26 over the entire length. It is fixed.

As in Example 1, as the adhesion preventing layers 10b, 10b ..., a thin material that is hard to cause adhesion with the copper foil forming the conductive metal layers 10a, 10a ... such as carbon sheets or stainless foil is used.

However, the adhesion preventing layers 10b, 10b ... have respective lengths reaching the penetrating positions of the fixing bolts 27 and 27 in the fixing portions 1b and 1b, and the circles formed at the coaxial ends. The shape notch is fixed to the fixing bolts 27 and 27 to prevent displacement.

As shown in Fig. 20, the adhesion preventing layers 10b, 10b ... are set to both sides in the width direction of the conductor metal layers 10a, 10a ... with margins to save materials as in the thirteenth embodiment.

In the fixing portions 1b and 1b on both sides of the flexible portion 1a, the conductive metal layers 10a, 10a ... are fixed by tightening the fixing bolts 27 through the press plate 26 to prevent the adhesion layer 10b, 10b. In the half parts that do not set), they are brought into close contact with each other to lower the contact resistance therebetween.

Therefore, in the use state shown in the drawing, the resistivity of the entire flexible conductor 1 is lowered to ensure good conductivity, and the amount of heat generated by energization of current can be reduced.

This can be more effectively achieved by heating the vicinity of the fixing portions 1b and 1b to about 500 ° C to diffuse and bond the conductor metal layers 10a, 10a...

Example 15

Fig. 24 is a schematic side view showing the main structure of a switchgear according to the present invention.

In the drawing, reference numeral 20 denotes a vacuum vessel in which the inside is kept at a high vacuum of 10-3 Torr or less.

The vacuum vessel 20 is fitted with a busbar bushing 22 in which ceramics are formed in a truncated cone shape, and the busbar bushing 22 penetrates the busbar side conductor 21 to which an external busbar is connected.

The first fixed electrode 23 of the main circuit opening and closing part 25 is fixed to the tip of the bus side conductor 21, and the first movable electrode 24 is set to face the first fixed electrode 23. .

The first movable electrode 24 is fixed to the tip of the first conductive rod 26, and the base end of the first conductive rod 26 is external to the vacuum vessel 20 through the insulating rod 29. It is connected to the operation rod 28 driven back and forth by the drive device (not shown) arrange | positioned at.

The operating rod 28 passes through the vacuum vessel 20 and the vacuum vessel 20 is hermetically sealed by a first bellows 31 set between the operating rod 28 and the vacuum vessel 20. is kept in the hermetic state.

A metal ring 27 is attached to the middle of the first conductive rod 26 from the outside.

The cable bushing 34 which supports the load side conductor 33 which connects a power transmission cable is attached to the part of the vacuum container 20 which opposes the peripheral surface of the metal ring 27. As shown in FIG.

Near the distal end of the load side conductor 33, the second fixed electrode 37 of the ground opening / closing part 39 is set, and the second movable electrode 38 is set opposite to the second fixed electrode 37. As shown in FIG.

The second movable electrode 38 is attached to the tip of the second conductive rod 36 penetrating the vacuum vessel 20, so that the second conductive rod 36 is driven back and forth by a driving device (not shown).

In this way, the second conductive rod 36 is provided.

The second bellows 32 is set between the second conductive rod 36 and the vacuum vessel 20, and the vacuum vessel 20 is kept in an airtight state by the second bellows 32.

A cylindrical first cover member 51 having an end portion closed is attached to a portion of the metal ring 27 facing the load side conductor 33 in a state where the bottom part is in contact with the main surface of the metal ring 27.

The dimension in the axial length direction of the first cover member 51 is slightly shorter than the dimension between the metal ring 27 and the load side conductor 33 so that the end of the first cover member 51 is bent inward.

The load side conductor 33 has a shape similar to that of the first cover member 51, and the second cover member 52 having a smaller size contacts the bottom end of the load side conductor 33 so that the tip portion thereof is closed. It is attached in the state put in the 1st cover member 51. As shown in FIG.

Holes are set in each of the bottoms of the first and second cover members 51 and 52, and a double arch shape is formed in a portion where the metal ring 27 and the load side conductor 33 face the two holes. The flexible conductor 40 of is set.

In such a switchgear, the operation rod 28 is driven back and forth to drive the operation rod 28, the first conductive rod 26, and the first movable electrode 24 back and forth to drive the first movable electrode 24 and the first movable electrode 24. The main circuit opening and closing part 25 is opened and closed by contacting and detaching the fixed electrodes 23 from each other.

In the state where the main circuit opening and closing portion 25 is opened, the second conductive rod 36 is driven forward and backward to detach the second movable electrode 38 and the second fixed electrode 37 from each other so that the ground opening and closing portion 39 Open and close the).

When the main circuit opening and closing part 25 is opened and closed, the flexible conductor 40 is warped as the first conductive rod 26 is driven back and forth, and the twisted flexible conductor 40 is returned to its original state. 1 The conduction between the conductive rod 26 and the load side conductor 33 is maintained.

On the other hand, since the periphery of the flexible conductor 40 is covered with the first and second cover members 51 and 52, an arc product produced by the opening and closing operation of the main circuit opening and closing part 25 is made. The adhesion on the flexible conductor 40 is prevented.

In this embodiment, the flexible conductor 40 is covered by the first and second cover members 51 and 52 disposed to face each other, but the present invention is not limited thereto.

One of the first cover member 51 or the second cover member 52 may be set.

In this case, the dimension in the axial length direction of the cover member is longer than the dimension of the flexible conductor 40.

Example 16

Fig. 25 is a schematic side view showing the main configuration of the switchgear according to the sixteenth embodiment of the present invention, showing the case where bellows 61 is used.

In the drawings, parts corresponding to those shown in FIG. 24 are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 25, the flexible conductor 40 is set between the metal ring 27 and the load side conductor 33, and is accommodated in the normal 3rd bellows 61. As shown in FIG.

One end of the third bellows 61 is fixed to the main surface of the metal ring, and the other end thereof is fixed to the opposite end of the load side conductor 33, thereby preventing the adhesion of the arc product on the flexible conductor 40 again. have.

Example 17

Fig. 26 is a schematic side view showing the main structure of the switchgear according to the seventeenth embodiment of the present invention, showing the case where a slide contact 41 is used.

In the figure, the part corresponding to the part shown in FIG. 24 has shown the same code | symbol, and the description is abbreviate | omitted.

As shown in FIG. 26, the first conductive rod is bound from the outside to allow the annular sliding contact 41 to slide instead of the metal ring 27 shown in FIG. 2, and to the main surface of the sliding contact 41. The load side conductor 33 is connected.

In a position spaced a predetermined distance from the upper and lower ends of the sliding contact 41 of the first conductive rod 26, the box-shaped third cover member 53 and the fourth beaker member (covering the sliding contact 41) ( 54 is fixed to the outside and a notch is set at a portion corresponding to the load side conductor 33 of the third cover member 53 and the fourth cover member 54.

In such a switchgear, when the first conductive rod 26 is driven back and forth, the first conductive rod 26 is maintained while maintaining the electrical conduction state of the sliding contact 41 which is bound to the first conductive rod 26 to the outside. The sliding contact 41 slides inside.

At this time, the fourth cover member 54 together with the first conductive rod 26 operates back and forth.

The fourth cover member 54 is formed so that a suitable gap is formed between the sliding contact 41 and the bottom of the fourth cover member 54 when the first movable electrode 24 is brought into contact with the first fixed electrode 23. It is fixed to the first conductive rod 26, and the dimension of the fourth cover member 54 in the axial length direction is the first movable electrode (when the first movable electrode 24 is detached from the first fixed electrode 23). The upper end of 24 is set to be located in the third cover member 54.

By doing in this way, the arc product produced | generated by the opening-closing operation | movement of the main circuit opening-and-closing part 25 is prevented from adhering to the part which contacts the sliding contact 41 of the 1st conductive rod 26. As shown in FIG.

In this embodiment, the sliding contact 41 is covered by the third cover member 53 and the fourth cover member 54 which are disposed to face each other, but the present invention is not limited thereto.

Only the third cover member 53 may be provided.

In this case, the dimension of the 3rd cover member 53 in the axial length direction is lengthened suitably.

Example 18

Fig. 27 shows a case where a bellows is used as a schematic side sectional view showing the main part structure of the switchgear according to the eighteenth embodiment of the present invention.

In the figure, parts corresponding to those shown in FIG. 26 are denoted by the same reference numerals and description thereof will be omitted.

As shown in FIG. 27, the sliding contact 41 is externally fastened to the first conductive rod 26 so as to slide, and a predetermined distance from the upper end of the sliding contact 41 of the first conductive rod 26 is fixed. At the lower position and the lower end of the sliding contact 41, the annular plates 45 and 46 each having a hole set in the center of the disk having a diameter larger than the diameter of the sliding contact 41 are bound to the outside.

The cylindrical fourth bellows 62 is set between the upper end of the sliding contact 41 and the annular plate 45 facing the cylindrical contact, and the cylindrical fifth bellows 63 is the sliding contact 41. It is set between the annular plate 46 and the operation rod 28 set at the lower end of the.

In such a switchgear, when the first conductive rod 26 is operated back and forth, the first conductive rod 26 slides in the sliding contact 41 while maintaining the electrical conduction state of the sliding contact 41 which is attached thereto. do.

At this time, the fifth bellows 63 expands and contracts when the first conductive rod 26 operates back and forth.

By doing in this way, the arc product produced | generated by the opening-closing operation | movement of the main circuit opening-and-closing part 25 is further prevented from adhering to the part which contacts the sliding contact 41 of the 1st conductive rod 26. FIG.

Example 19

Fig. 28 is a schematic side sectional view showing the main part structure of a switchgear according to a nineteenth embodiment of the present invention.

In Example 19, the side wall of the vacuum vessel is set to face the main surface of the metal ring 27 which is fastened to the first conductive rod 26.

The metal ring 27 is provided with a connection conductor 42 formed on one side thereof, and the diameter of the opening portion is provided with a size that allows the flexible conductor 40 to penetrate a considerable gap.

One end of the flexible conductor 40 is at one end of the connecting conductor 42 in the vacuum vessel 20, and the other end of the flexible conductor 40 penetrating through the opening is located outside the vacuum vessel 20. The load side conductor 33 is brazed to allow current to flow from the power supply side to the load side.

In addition, the lower portion of the vacuum vessel 20 passes through the upper end of the grounding conductor 36 at a position opposite to the connecting conductor 42, and connects the grounding conductor 36 to a driving device (not shown) at the lower end thereof. Let's do it.

Between the one end of the connection conductor 42 and the opening of the vacuum vessel 20, a bellows 41b made of stainless steel is set, and both ends of the bellows are connected to one end of the connection conductor 42 and the vacuum vessel. Since it is fixed by soldering to the opening margin of 20, the airtightness in the vacuum container 20 is maintained.

In this way, by setting the flexible conductor 40 to the outside of the vacuum vessel 20, adhesion of the flexible conductor 40 is suppressed and loss of flexibility is prevented.

In addition, the conductive adhesive wear powder does not diffuse into the vacuum vessel 20 to contaminate the inside of the vacuum vessel 20, and the withstand voltage performance can be stabilized.

The same reference numerals as the parts shown in FIG. 24 are the same as those of the parts shown in FIG. 25 and the description thereof is omitted.

Example 20

Fig. 29 is a schematic side cross-sectional view showing the main parts of a switchgear according to a twentieth embodiment of the present invention.

Conductive bellows 43 made of copper-based metal is set at the outer circumferential surface of the metal ring 27 fixed to the conductive rod 26 and at one end of the load side conductor 33, and both ends are soldered to each other. .

The conductive bellows 43 has flexibility and elasticity capable of smoothing the positional displacement between the metal ring 27 and the load side conductor 33 involved in the opening and closing operation of the main circuit opening and closing part 25.

With such a configuration, since the members do not come into contact with each other, adhesion does not occur on the inner and outer circumferential surfaces of the conductive bellows 43, and adhesion wear powder does not occur, so that the pressure resistance performance can be stabilized.

The position of the conductive bellows 43 can be set to the load side conductor 33 side at the position of the ground opening and closing portion 39.

In addition, the cross-sectional shape of the bellows 41a and 41b of Example 1 and 2 and the electroconductive bellows 43 of Example 3 is not limited to a circular shape, but can be oval, square, etc.

The code | symbol of the part shown in FIG. 24 is the same as that of the part of FIG. 26, and the description is abbreviate | omitted.

In the flexible conductor according to the present invention, a plurality of conductive metal layers are laminated by interposing an anti-adhesion layer therebetween to form a flexible portion. Therefore, each conductive metal layer has a respective conductive metal layer when the flexible conductor is deformed according to the displacement of the movable conductor connected to one side. Sliding contact is made between the adhesion preventing layers interposed therebetween so that the conductive metal layers do not directly contact each other, and even when used in a vacuum, the conductive metal layers adhere to each other so that the flexibility is not lost, and the displacement of the movable conductor with respect to the fixed conductor is stable for a long time. Can be allowed.

In the flexible conductor according to the present invention, since the adhesion preventing layer is formed of carbon sheets, inorganic powders or metal foils interposed between the conductive metal layers, adhesion between the conductor metal layer and the adhesion preventing layer is difficult to produce and more effectively suppresses the loss of flexibility. have.

In the flexible conductor according to the present invention, since the adhesion preventing layer is formed by a plated film having a film formed on one or both sides of each conductor metal layer, the plated film is formed of a metal from which a stable oxide is obtained, thereby sliding with the conductor metal layer. Adhesion by contact can be prevented, and loss of flexibility can be suppressed.

In the flexible conductor according to the present invention, since the fixing parts set on both flexible parts are formed by laminating the conductor metal layers in the thickness direction, good conductivity can be secured by reducing the contact resistance in the fixing parts.

In the flexible conductor according to the present invention, since a plurality of conductive metal layers having protrusions on one or both sides are laminated in the thickness direction, a flexible part is formed, and thus, the plurality of conductor metal layers are laminated with a gap at a substantial portion of the height of the protrusion. When the flexible portion is subjected to bending deformation, sliding contact of these conductor metal layers occurs at a portion defined at each tip end, and adhesion at least in accordance with the sliding contact can be suppressed at least, thereby suppressing the loss of flexibility.

In the flexible conductor of the present invention, since the fixing parts set on both sides of the flexible part are formed by diffusion bonding the conductor metal layer, the contact resistance at the fixing part is greatly reduced, and the resistivity of the flexible conductor as a whole is reduced. The conductivity can be secured.

In the flexible conductor of the present invention, a plurality of conductive metal layers are laminated on both sides with spacer plates on both sides thereof to form a flexible portion, so that the conductive metal layers constituting the flexible portion do not come into contact with each other. When the bending deformation is caused by the displacement of the conductor, the conductor metal layers do not come into sliding contact with each other, and even when used under vacuum, the conductor metal layers adhere and do not lose flexibility, Displacement can be tolerated over a long period of time.

In the flexible conductor of the present invention, since the fixed parts set on both sides of the flexible part are formed by diffusion bonding the conductive metal layer and the spacer plate set between them, the contact resistance at the fixed part is greatly reduced, and the resistivity of the entire flexible conductor is reduced. It is possible to secure good conductivity by reducing

In the flexible conductor of the present invention, the conductive metal layer is formed when the wire material of the conductive metal is formed in a mesh shape and is deformed according to the displacement of the movable conductor connected to one side by forming the flexible part by providing both sides in the thickness direction by the restricting plate. Sliding contact and adhesion therein occur only at the contact portion of the wire material, and the flexible loss can be effectively prevented, and the displacement of the movable conductor with respect to the high conductor can be stably allowed for a long time.

In addition, the flexible conductor according to the present invention protrudes a flexible part consisting of a wire material of a conductor metal in a mesh shape on both sides of the restricting plate, and diffuses and joins the wire material to each contact part to form a fixed part. The fixing part can be easily configured, and the resistivity of the entire flexible conductor is lowered, so that good conductivity can be ensured.

In the switchgear of the present invention, since the flexible member is covered with the cover member, the adhesion of the arc product can be prevented.

In addition, since a film of oxide or nitride can be formed on the surface of the flexible conductor by inserting a gas containing air or nitrogen into the interior thereof, adhesion of the flexible conductor can be prevented.

As a result, flexibility and elasticity can be ensured in the flexible conductor, generation of adhesion wear powder can be prevented, contamination is prevented in the vacuum vessel, and the voltage resistance performance can be stably maintained.

In the switchgear of the present invention, since the flexible conductor is outside the vacuum container, adhesion can be prevented from occurring in the flexible conductor and the operation can be made stable.

In addition, since adhesion wear powder can be prevented from occurring, there is no contamination in the vacuum container and the voltage resistance performance can be made stable.

In addition, the switchgear of the present invention can smoothly operate the conductive rod for opening and closing the main circuit by using a flexible conductive member.

In addition, since the members are formed so as not to contact each other, adhesion is not generated and there is no fear of contamination in the vacuum container by the adhesion wear powder, so that the voltage resistance performance can be made stable.

In the switchgear of the present invention, by using the bellows, the airtightness of the inside of the switchgear can be smoothly performed even when the conductive rod is detached from the bus side and the load side.

Claims (3)

A flexible part in which a plurality of metal conductor layers and a plurality of adhesion preventing layers are laminated alternately in a thickness direction, and fixing parts provided on both sides of the flexible part, and these fixing parts are attached to the fixed conductor so as to be fixed to the high conductor and the movable conductor. A flexible conductor, characterized in that it has a configuration that allows movement of the movable conductor with respect to the flexible portion by the bending deformation. A flexible portion in which a plurality of conductive metal layers are laminated in the thickness direction, and a fixing portion formed by interposing a spacer plate between each conductive metal layer on both sides of the flexible portion, These fixed parts are used to be fixed to the movable conductor and the fixed conductor, respectively, and have a configuration that allows the movement of the movable conductor with respect to the fixed conductor by the bending deformation of the flexible part. In the vacuum vessel, the power supply side conductor, the conductive rod for contacting and separating the power supply side conductor, the load side conductor, and the conductive metal foil are laminated and formed to be in contact with the load side conductor and the conductive rod, and the flexible member A cover member having flexibility is provided to cover the conductive conductor and to fix each of the conductive rod and the load side conductor in an airtight state. A gas containing oxygen or nitrogen is enclosed in the cover member. Switchgear.