JP2000059960A - Gas insulation bus line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economical gas insulation bus line with good anti- earthquake characteristics. SOLUTION: A base unit 10 includes a gas insulation linear unit 11 with a given length, and a gas insulation bent unit 12 joined with an end of the linear gas unit 11 and bent at an angle of 15 deg. or above with respect to an extended line in an elongated direction of the linear unit 11. A plurality of the base units 10 are so connected that each bent unit 12 is arranged on the same plane in almost parallel with a mounting face to form an almost linear gas insulation bus line. The given base unit 10 is fixed to a frame stage on the mounting face. At the same time, the other base unit 10 is provided on the other frame stage in a way that the base unit 11 can be moved in a direction almost parallel with the mounting face thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a gas-insulated bus used in the field of transmission and transformation of a power system and the field of power reception.

[0002]

2. Description of the Related Art FIG. 15 shows, for example, Japanese Patent Publication No. 58-45254.
FIG. 1 is a cross-sectional view of a conventional gas-insulated bus bar described in Japanese Patent Application Publication No. H10-80138, where 80 is a unit of the gas-insulated bus bar, 81 is a container constituting the bus bar, 82 is a supporting insulator provided at predetermined intervals in the container, and 83 is A conductor supported by the supporting insulator 82; 84, a metallic annular impurity suppressing device; 85, a hole formed at a lower portion of the impurity suppressing device; 86, a contact formed of a concave portion formed at one end face of the conductor; , 87 are contact portions made of a convex portion formed at the other end of the conductor 83, and are connected to each other by coupling with the contact 86 of the conductor of the adjacent gas-insulated bus.
Reference numeral 88 denotes a connecting ring for connecting adjacent gas-insulated bus containers, 89 denotes a fillet welded portion connecting the connecting ring 88 and each container 81, 70 denotes a horizontal portion serving as an installation surface, and c1 denotes a horizontal portion 7.
It is an angle with 0.

FIG. 16 shows, for example, Hiroshi Kuwahara et al.
ol. 56 No. It is a top view which shows the arrangement | positioning of another conventional gas-insulated bus described in "3-phase collective gas-insulated bus" on pages 5.25-30. In this figure, 91A to 91A
F is a linear unit of a gas-insulated bus, 92A, 9
2B is a bending unit interposed between the linear units 91A to 91F to bend the gas-insulated bus, 93 is a gas-insulated bus telescopic unit provided in place of one of the linear units, and 94 is mounted on the telescopic unit 93. The bellows is used to cope with expansion and contraction of the gas-insulated bus. Reference numeral 95 denotes a fixed base provided on the installation surface 96 for supporting the gas-insulated bus, and w1 denotes a horizontal distance between linear units parallel to the gas-insulated bus.

Next, the operation will be described. The gas-insulated bus is formed by connecting a plurality of units of the gas-insulated bus shown in FIG. 15 in a straight line when viewed in plan. However, when viewed from the side, as shown in FIG. It is arranged so as to have c1. This is to absorb expansion and contraction of about 1 mm per 1 m due to a temperature rise due to energization of the gas insulating bus made of aluminum alloy and a temperature change of the outside air. In the case of FIG. 15, the thermal expansion and contraction is absorbed by the displacement of the connection between the inclined portion of the unit of the gas insulated busbar 80 and the adjacent unit. The gas-insulated busbar 80 of FIG. 15 is extremely effective in absorbing thermal expansion and contraction, but since the container 81 does not have a horizontal portion, positioning during installation is difficult, and it takes time for installation adjustment. Since the container 81 is not properly fixed, the displacement of the container 81 during an earthquake becomes large, and there is a disadvantage that the earthquake resistance as a gas-insulated bus is low.

In the case shown in FIG. 16, the gas-insulated bus bars are arranged on a horizontal installation surface so as to be substantially linear in plan view. As in FIG. 15, expansion and contraction of about 1 mm per 1 m usually occurs due to temperature rise due to energization of the gas-insulated bus made of aluminum alloy and temperature change of the outside air. A telescopic unit 93 having 94 is provided, and bending units 92A and 92B are provided. Therefore, FIG.
Although the gas-insulated bus is very effective in absorbing thermal expansion and contraction, the bellows 94 increases the cost of the bellows, and the large amount of several tons or more due to the internal pressure in the bellows 94. Since the load needs to be received by the two sets of fixed gantry 95, a rigid fixed gantry 95 is required, and there is a problem that the cost is high. Further, in FIG. 16, the bending units 92A and 92B are effective in absorbing thermal expansion and contraction. However, an additional space in the horizontal direction is required by the bending unit dimension w1 to increase the cost. Had become.

[0006]

Since the conventional gas-insulated bus is constructed as described above, there are problems such as low seismic resistance and high cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an economical gas-insulated bus having excellent earthquake resistance by optimizing the unit configuration of the gas-insulated bus. It is an object.

[0008]

A gas-insulated bus according to the present invention is provided with a gas-insulated linear unit having a predetermined length, and connected to one end of the linear unit to extend in the longitudinal direction of the linear unit. And a plurality of gas-insulated bending units, which are bent at an angle of 15 degrees or less, so that each bending unit is positioned in the same plane substantially parallel to the installation surface. Then, in a component constituting a substantially linear gas-insulated bus, while fixing a predetermined basic unit to a gantry installed on the installation surface, and other predetermined basic units in a direction substantially parallel to the installation surface. It is supported on another mount installed on the installation surface so as to be movable. The gas-insulated bus of the present invention is also provided with a gas-insulated linear unit having a predetermined length and one end of the linear unit, and is not more than 15 degrees with respect to the lengthwise extension of the linear unit. A plurality of basic units each including a gas-insulated bending unit bent at an angle are connected such that each bent unit is positioned in the same plane substantially perpendicular to the installation surface, and a substantially linear gas is formed. In what constitutes an insulated busbar, the predetermined basic unit is fixed to a gantry installed on the installation surface, and the other predetermined basic units are movable in a direction substantially perpendicular to the installation surface. It is supported by another stand installed on the installation surface.

The gas-insulated bus of the present invention is further provided with a gas-insulated linear unit having a predetermined length and an end connected to one end of the linear unit. The basic unit consisting of a gas-insulated bending unit bent at an angle of less than or equal to the degree is located in a plane substantially parallel to the installation surface and in a plane substantially perpendicular to the installation surface. And a plurality of components connected together to form a spiral gas insulated bus as a whole, wherein a predetermined basic unit is fixed to a gantry installed on the installation surface, and the other predetermined basic unit is Other pedestals installed on the installation surface so that they can be moved in a direction substantially parallel to the installation surface, and so that other predetermined basic units can be moved in a direction substantially perpendicular to the installation surface. It is those that were supported. The gas-insulated busbar of the present invention is further provided with a gas-insulated linear unit having a predetermined length and one end connected to both ends of the linear unit.
A plurality of both-end bending units composed of a gas-insulated bending unit bent at an angle of 5 degrees or less, such that each bending unit is positioned in the same plane substantially parallel to the installation surface, In what constitutes a substantially linear gas-insulated bus, while fixing a predetermined both-end bending unit to the gantry installed on the installation surface, another predetermined double-end bending unit in a direction substantially parallel to the installation surface. It is supported on another mount installed on the installation surface so as to be movable.

The gas-insulated bus of the present invention is also provided with a gas-insulated linear unit having a predetermined length and connected to both ends of the linear unit, respectively, with respect to an extension of the linear unit in the longitudinal direction. A plurality of both-end bending units composed of a gas-insulated bending unit bent at an angle of 15 degrees or less are connected such that each bending unit is located in the same plane substantially perpendicular to the installation surface, In what constitutes a substantially linear gas-insulated bus, while fixing a predetermined both-end bending unit to the gantry installed on the installation surface, and another predetermined double-end bending unit in a direction substantially perpendicular to the installation surface. It is supported on another mount installed on the installation surface so as to be movable. The gas-insulated busbar of the present invention is further provided with a gas-insulated linear unit having a predetermined length and one end connected to both ends of the linear unit.
The two-end bending unit composed of a gas-insulated bending unit bent at an angle of 5 degrees or less, and a unit in which each bending unit is located in a plane substantially parallel to the installation surface and a plane substantially perpendicular to the installation surface And a plurality of connected ends to form a spiral gas-insulated bus as a whole, wherein a predetermined both-end bending unit is fixed to a gantry installed on the installation surface, and the other predetermined ends are fixed. In order to be able to move the bending unit in a direction substantially parallel to the installation surface, and to move another predetermined double-ended bending unit in a direction substantially perpendicular to the installation surface, It was supported by another installed base.

The gas-insulated bus of the present invention is such that a gas-insulated linear unit is connected between any adjacent basic units or between both end bending units. In the gas insulated bus of the present invention, the linear unit portions of the pair of basic units are connected to each other to form a double-end bent unit.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, an embodiment of the present invention will be described. FIG. 1 is a sectional view showing a basic unit of a gas-insulated bus of the present invention. In this figure, reference numeral 10 denotes a basic unit of a gas-insulated bus, and a linear unit 11 of the gas-insulated bus and the linear unit 11
And a gas-insulated and bent unit portion 12 bent at a predetermined angle with respect to the lengthwise extension of the linear unit portion 11. 13 is a container of each unit, 14 is a supporting insulator provided at a predetermined interval in the linear unit, 15 is a conductor supported by the supporting insulator 14, and 16 is a concave formed on one end face of the conductor 15. The contact 17 is a contact formed of a protrusion formed on the other end of the conductor, and is connected to the contact 16 of the conductor of the adjacent basic unit 10 by coupling.

The basic unit 10 shown in FIG.
A plurality of basic units 10 such as 0A to 10F are connected in series to form a gas-insulated bus 100. This figure is a plan view, and the side view is as shown in FIG. 3, and the bending unit portions 12A to 1B of the respective basic units 10A to 10F.
As a result, each of the 2Fs is arranged in a substantially parallel state with respect to the installation surface 70 as shown in FIG. As seen from FIG. 2, the shape as a whole extends linearly while meandering. The basic units 10D and 10E in FIG.
4 and 10F show the configuration of the connecting portion. In FIG. 4, reference numeral 21 denotes a connection ring for connecting the containers of the adjacent basic units, 22 denotes a seal, and 23 denotes a fillet weld for connecting the container and the connection ring.

2 and 3, reference numeral 24 denotes a pedestal provided on the installation surface 70 for fixedly supporting the basic unit. As shown in FIG. 2, the linear unit portion 11 of the basic unit includes a gas-insulated bus. Those supporting the extension direction of 100 (10A and 10E in FIG. 2) are supported. Reference numeral 25 denotes a fixing leg, and reference numeral 26 denotes a fixing bolt for fixing the fixing leg 25 and the gantry 24. Reference numeral 27 denotes a slide base provided on the installation surface 70 for slidably supporting a basic unit (10C in FIG. 2) which moves in the horizontal direction. Reference numeral 28 denotes a slide leg.

In such a configuration, the basic unit 1
The bending angle a1 (FIG. 1) of the bending unit portion 12 of 0 is 1
5 degrees or less is appropriate. If the temperature exceeds 15 degrees, the horizontal movement distance b1 in FIG. 2 becomes too large, and if it is too small, the displacement of thermal expansion and contraction cannot be absorbed. Therefore, in the case of a normal temperature rise or temperature change, about 2 degrees to 9 degrees is desirable. In the basic unit 10 of FIG. 1, two supporting insulators 14 provided to support the conductor 15 are provided on one side (FIG. 1).
Is welded to the container 13,
The other (the upper one in FIG. 1) is provided so as to be able to slide inside the container 13, so that the container 13 and the conductor 1
The movement is almost the same as that of the fifth. Also, the conductor 15 to be connected
Is in sliding contact with the contact 16 at the contact portion 17 so that the contact is normal even when thermally expanded and contracted.

Gas insulated bus bar 100 having a long straight section
Is mainly composed of the basic unit 10, the basic unit 10 is standardized and mass-produced. As a result, the basic unit 10 can be economically configured. In addition, the gas-insulated busbar 100 has the bent unit portion 12 of each basic unit on the installation surface. Since the base unit 10 is disposed on the gantry so as to be positioned on the same plane that is horizontal with respect to the gantry, when the long basic unit 10 having the length d1 is arranged on the gantry, it is easily maintained horizontally with a level or the like to perform positioning. Can be
Installation work can be performed efficiently. Since the units are connected only by horizontal movement when the basic unit 10 is inserted into the connecting ring 21, the work is easy and the work efficiency can be improved.

In FIG. 5, when the length of the gas-insulated busbar 100 increases due to a rise in temperature due to energization or a rise in ambient temperature, as shown by a dotted line, the basic unit 10C supported by the slide stand 27 and connected thereto. The basic units 10B and 10D slide to absorb the elongation of the gas-insulated bus 100. In this case, the slide legs 28 of the basic unit 10C can slide on the slide base 27 in a direction perpendicular to the gas-insulated busbar 100, as shown in FIG. But,
It does not come off from the groove of the slide base 27. The gas insulated busbar 100 is fixed at the position of the fixed gantry 24. As shown by the dotted line in FIG. 5, even if there is a dimensional change of the gas insulated busbar 100 due to thermal expansion and contraction, the dimensional change is absorbed by sliding the basic unit, and
Since a heavy load is not applied to 7, a sturdy structure is not required, and an economical gantry can be provided. Further, since no bellows is required, a portion receiving gas pressure inside the container is unnecessary, and disconnection and connection can be made at any place even in the event of a failure, so that work can be performed economically.

In FIG. 3, the fixed leg 25 and the slide leg 28 may be attached to the basic unit 10 by welding, bolting, band fastening, or any other attaching method.

According to this embodiment, as described above,
The gas-insulated busbar 100 can economically absorb the expansion and contraction due to thermal expansion and contraction without a bellows or a large bent portion, and has the required rigidity because it is firmly fixed to the foundation by the fixed base 24 and the slide base 27. It also has excellent earthquake resistance. Further, since there is no projection such as a bellows in the external appearance, the appearance is also desirable.

FIG. 6 shows a connecting portion of the basic unit 10.
The linear unit 11 of the basic unit 10 as shown in FIG.
As a single unit, a linear unit 3 of length d2
The same effect can be obtained even if 0 is sandwiched, a large undulating shape can be formed as a whole, and the aesthetic appearance is also excellent, and the cost is reduced because there is no bend at the end. Further, as shown in FIG.
0 can be similarly applied. In FIG. 7, reference numeral 41 denotes a flange formed on both ends of a container having a length of d3, 42 denotes a flange formed in the middle of the unit, and 43 denotes a flange 42.
Is a supporting insulator provided on the mounting lid in the unit, and one (upper one in the figure) supports the conductor 15 so as to be slidable with the sliding contact portion 45, and the other side. (The lower one in the figure) fixedly supports the conductor 15. As described above, this flange-joined linear unit 40 is different from the other units in the method of attaching the supporting insulator for supporting the conductor to the container, but the same effect is obtained irrespective of this attaching method. FIG.
FIG. 6 to FIG. 6 show the configuration of the phase-separated gas-insulated bus, but the same effect can be obtained by using a three-phase collective gas-insulated bus.

Embodiment 2 FIG. Hereinafter, a second embodiment of the present invention will be described. FIG. 8 is a side view of a gas-insulated bus according to the second embodiment, and FIG. 9 is a side view showing a state of a linear portion of the gas-insulated bus according to the second embodiment before and after thermal expansion and contraction.
8 and 9, reference numeral 100 denotes a gas-insulated bus, and FIG.
Are connected in series and the bent units of each unit are arranged on the same plane substantially perpendicular to the installation surface 70. In addition, the same reference numerals are given to the corresponding parts of the first embodiment, and the description is omitted. 46 is a slide base provided on the installation surface 70, and 47 is a slide leg that slides in a direction perpendicular to the installation surface.

Next, the operation will be described. In FIG. 8, a gas-insulated bus bar 100 having a long straight portion has a plurality of basic units 10 </ b> A to 10 </ b> F arranged such that each bent unit portion is located in the same plane substantially perpendicular to the installation surface. It is supported by a plurality of fixed gantry 24 and a plurality of slide gantry 46. As in FIG. 2,
Since the gas-insulated bus 100 is mainly composed of the basic unit 10, it can be economically constructed as a result of being standardized and mass-produced. In FIG. 8, the gas-insulated busbar 100 is arranged on the gantry so as to be horizontal at the horizontal portion of the basic unit 10. Therefore, when the long basic unit 10 having the length d1 is arranged on the gantry, a level, etc. Since the positioning can be easily performed while maintaining the horizontal position, the installation work can be performed efficiently.
Units are connected only by horizontal movement when inserting the basic unit 10 into the connecting ring, so that work is easy,
Work efficiency can also be increased.

In FIG. 9, the gas-insulated bus 100
When the length increases due to a rise in temperature or a rise in ambient temperature due to energization, a slide leg 47 supported by a slide base 46 slides upward as shown by a dotted line in FIG. It is designed to absorb. However, the slide leg 47 does not come off the groove of the slide base 46. According to this embodiment, the gas-insulated busbar 100 can economically absorb the expansion and contraction due to thermal expansion and contraction without a bellows or a large bent portion, and is firmly fixed to the foundation by the fixed stand 24 and the slide stand 46. It also has excellent rigidity and excellent earthquake resistance. The same effect can be obtained by interposing the linear unit shown in FIG. 6 between the linear unit portions of the basic unit 10.

Embodiment 3 FIG. Hereinafter, a third embodiment of the present invention will be described. FIG. 10 shows Embodiment 3 of the present invention.
FIG. 11 is a side view of a straight portion of a gas-insulated bus according to the third embodiment. In FIGS. 10 and 11, parts corresponding to the first and second embodiments are denoted by the same reference numerals, and description thereof is omitted. In this embodiment, a plurality of basic units 10 shown in FIG. 1 are connected in series, and a bent unit portion of each basic unit is located in a plane substantially parallel to the installation surface and a plane substantially perpendicular to the installation surface. And a gas-insulated bus in a spiral shape as a whole.

The operation will be described below. 10 and 11, the gas-insulated bus 10 having a long straight portion
Reference numeral 0 denotes a plurality of fixed frames 24 and a plurality of fixed frames 24, which are arranged so that the bent units of the basic unit 10 shown in FIG. It is supported by a horizontal slide mount 27 and a plurality of vertical slide mounts 46. As in FIG. 2, the gas-insulated busbar 100 of FIG.
Since it is composed of 0, it can be economically constructed as a result of being standardized and mass-produced.

Further, since the gas-insulated busbars 100 are arranged on each gantry so as to be horizontal at the horizontal part of the basic unit 10, when the basic unit 10 having a long length d1 is arranged on the gantry, Positioning can be easily performed while being kept horizontal with a container or the like, and installation work can be performed efficiently. Furthermore, since the units are connected only by horizontal movement when the basic unit 10 is inserted into the connecting ring, the work is easy and the work efficiency can be improved. When the length of the gas-insulated busbar 100 increases due to an increase in temperature due to energization or an increase in ambient temperature, the horizontal and vertical slide mounts 27 and 46 extend in a direction in which the diameter of the spiral increases.
Are slid in the horizontal and upward directions to absorb the elongation of the gas-insulated bus 100. The slide legs 28 and 47 are connected to the slide base 2.
It can slide left and right and up and down on 7 and 46, but does not come off the grooves of the slide bases 27 and 46.

As described above, according to the third embodiment, the gas-insulated busbar 100 can economically absorb expansion and contraction due to thermal expansion and contraction without a bellows or a large bent portion.
Since it is firmly fixed to the foundation by the fixed base and the slide base, it has rigidity and excellent earthquake resistance. In addition, since the gas-insulated busbar 100 has a spiral shape, thermal expansion and contraction can be absorbed by displacement of the spiral in the radial direction, and the sliding dimension itself can be reduced, and the size of the slide base 27 can be reduced. . Basic unit 1
The same effect can be obtained by interposing the linear unit shown in FIG. 6 between the 0 linear unit portions.

Embodiment 4 Hereinafter, a fourth embodiment of the present invention will be described. FIG. 12 shows Embodiment 4 of the present invention.
Sectional view of a bending unit at both ends of a gas insulated busbar, FIG.
3 is a plan view of a straight line portion of a gas-insulated bus formed by connecting a plurality of bending units at both ends. In these figures,
Portions corresponding to the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted. 12 and 13, reference numeral 20 denotes a both-end bending unit, which is a linear unit 11 having a length of d4.
And a bent unit portion 12 connected to both ends thereof and bent at a predetermined angle with respect to an extension in the length direction of the linear unit portion.

Next, the operation will be described. In FIG. 12, the both-end bending unit 20 is provided with a connecting ring (not shown) at the both-end bending unit and is connected by fillet welding to form a longer straight portion, and as shown in FIG. A gas-insulated bus bar 100 having a straight portion is configured. FIG.
The both-end bending unit 20 has bent portions at both ends, and the angle a2 of the bent portion is suitably 15 degrees or less. 1
If it exceeds 5 degrees, the horizontal movement distance becomes too large, and if it is too small, the displacement of thermal expansion and contraction cannot be absorbed. The both-end bending unit 20 in FIG. 12 has a support insulator 14 that supports the conductor 15 welded to the container 13, and one support insulator portion 14 (upper part in the figure).
Is designed to be able to slide inside the container 13,
The container 13 and the conductor 15 perform almost the same movement. In addition, the conductor 15 to be connected is in sliding contact with the contact 16 at the contact portion 17 so that the contact is normal even when thermally expanded and contracted.

In FIG. 13, the gas-insulated bus bar 100 having a long straight portion has the both-end bending units 20 arranged so that the respective bending unit portions 12 are located in the same plane horizontal to the installation surface. A plurality of fixed frames 24 and a plurality of slide frames 27 are supported so that some of the both-end bending units can move in the horizontal direction. Since the gas-insulated bus 100 is mainly composed of the both-end bending unit 20, it can be economically constructed as a result of being standardized and mass-produced. The planar configuration of the gas insulated bus bar 100 has a shape that protrudes left and right in the horizontal direction by a predetermined dimension. Since the gas-insulated busbar 100 is arranged on the gantry so that the respective bending units become horizontal, when the long double-end bending unit 20 having a length d4 is arranged on the gantry, the gas-insulated busbar 100 is easily leveled with a level or the like. In this case, the positioning can be performed while maintaining the position, and the installation work can be performed efficiently.
Since the units are connected only by horizontal movement when the both-end bending unit 20 is inserted into the connection ring 21 as in the above-described embodiments, the work is easy and the work efficiency can be improved.

When the length of the gas-insulated busbar 100 increases due to a rise in temperature due to energization or a rise in ambient temperature,
As in FIG. 5, a slide leg (not shown) supported by the slide base 27 slides to absorb the extension of the gas-insulated busbar 100. The bending units 20 at both ends of the gas insulated bus bar 100 according to this embodiment are arranged such that each bending unit portion is located in the same plane that is horizontal to the installation surface, but is the same as in FIGS. 8 and 10. In addition, the same effect can be obtained by arranging in a plane perpendicular to the installation surface or spirally arranging the same. In the case of a spiral configuration, the bending unit of the both-end bending unit 20 is not in the same plane with respect to the installation surface, but is in a twisted position so that the central axis of each container can form a spiral shape. ing.

The both-end bending unit 20 in FIG. 12 is configured as a single unit. However, two sets of the basic units 10 shown in FIG. The same effect can be obtained with the configuration shown. In this way, a large spiral can be formed, which is also desirable from an aesthetic point of view. In FIGS. 1 to 13, the angle between 30 ° and 90 °
Sandwiching the gas-insulated busbar unit having a degree of bend,
The same effect can be obtained by forming a long gas-insulated bus.

[0033]

As described above, the present invention provides a gas-insulated linear unit having a predetermined length and one end connected to one end of the linear unit. A plurality of basic units composed of a gas-insulated bending unit bent at an angle equal to or less than degrees are connected so that each bent unit is positioned in the same plane substantially parallel to the installation surface, and is connected in a substantially straight line. In the configuration of the gas-insulated bus, a predetermined basic unit is fixed to a mount installed on the installation surface, and another predetermined basic unit can be moved in a direction substantially parallel to the installation surface. In addition, since it is supported by another gantry installed on the installation surface, an economical device excellent in earthquake resistance can be provided. The present invention also provides a gas-insulated linear unit having a predetermined length, and is coupled to one end of the linear unit, and is bent at an angle of 15 degrees or less with respect to the lengthwise extension of the linear unit. A plurality of basic units composed of a gas-insulated bending unit are connected so that each bending unit is located in the same plane substantially perpendicular to the installation surface to form a substantially linear gas-insulated bus. A fixed basic unit is fixed to a gantry installed on the installation surface, and another predetermined basic unit is installed on the installation surface so as to be movable in a direction substantially perpendicular to the installation surface. Because it is supported by another stand, it is possible to provide an apparatus that is excellent in earthquake resistance, is economical, and requires little installation space.

The present invention further provides a gas-insulated linear unit having a predetermined length, and one end connected to one end of the linear unit, wherein the linear unit has a length extending by one line with respect to the longitudinal direction.
A basic unit composed of a gas-insulated bending unit bent at an angle of 5 degrees or less, wherein each bending unit is located in a plane substantially parallel to the installation surface;
A plurality of such units are connected so as to include those located in a substantially vertical plane, and in a whole constituting a spiral gas-insulated bus, a predetermined basic unit is fixed to a gantry installed on the installation surface, and the like. Is installed so that it can move in a direction substantially parallel to the installation surface, and can move another predetermined basic unit in a direction almost perpendicular to the installation surface. Since it is supported by another gantry installed on the surface, it is possible to provide an apparatus which is excellent in earthquake resistance, is economical, and can be reduced in size. The present invention also provides a gas-insulated linear unit having a predetermined length, and a gas-insulated linear unit which is coupled to both ends of the linear unit, and which is bent at an angle of 15 degrees or less with respect to the lengthwise extension of the linear unit. A plurality of bent units composed of a gas-insulated bending unit and a plurality of bent units, each of which is positioned in the same plane substantially parallel to the installation surface, and a substantially linear gas-insulated bus. In the configuration, while fixing a predetermined both-end bending unit to the gantry installed on the installation surface, so that other predetermined both-end bending unit can be moved in a direction substantially parallel to the installation surface, Because it was supported by another stand installed on the installation surface,
It is possible to provide an apparatus which is excellent in earthquake resistance, is economical, and can be easily installed.

According to the present invention, since the linear unit portions of the pair of basic units are connected to each other to form a bent unit at both ends, the device is excellent in earthquake resistance, economical and aesthetically excellent. Can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a basic unit of a gas-insulated bus according to Embodiment 1 of the present invention.

FIG. 2 is a plan view of a gas-insulated bus according to Embodiment 1 of the present invention.

FIG. 3 is a side view of the gas-insulated bus according to the first embodiment of the present invention.

FIG. 4 is a sectional view of a connection portion of the gas-insulated bus according to the first embodiment of the present invention.

FIG. 5 is a plan view showing a thermal expansion and contraction state of the gas-insulated bus according to the first embodiment of the present invention.

FIG. 6 is a sectional view showing a linear unit of the gas-insulated bus according to the first embodiment of the present invention.

FIG. 7 is a sectional view of a gas-insulated bus-bar flange-joined linear unit according to Embodiment 1 of the present invention;

FIG. 8 is a side view of a gas-insulated bus according to Embodiment 2 of the present invention.

FIG. 9 is a side view of a gas-insulated bus bar according to Embodiment 2 of the present invention after thermal expansion and contraction.

FIG. 10 is a plan view of a gas-insulated bus according to Embodiment 3 of the present invention.

FIG. 11 is a side view of a gas-insulated bus according to Embodiment 3 of the present invention.

FIG. 12 is a cross-sectional view of a both-end bending unit of a gas-insulated bus according to Embodiment 4 of the present invention.

FIG. 13 is a plan view of a gas-insulated bus according to a fourth embodiment of the present invention.

FIG. 14 is a configuration diagram of a gas-insulated bus linear unit according to an embodiment of the present invention.

FIG. 15 is a cross-sectional view of a conventional gas-insulated bus linear unit.

FIG. 16 is a plan view of a conventional gas-insulated bus.

[Explanation of symbols]

100 gas insulated busbar, 10 basic unit, 11 linear unit, 12 bent unit, 13 container, 1
Reference Signs List 4 support insulator, 15 conductors, 16 contacts, 17 contact parts, 20 both-end bending unit, 21 connection ring, 24
Fixed mount, 27 slide mount, 30 linear units,
40 Flange joint type linear unit, 46 slide stand, 70 mounting surface.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshinori Shimizu 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 5G365 AA05 AB03 CA05 CB02 DA14 DB03 DC02 DE06 DH03 DH09 DJ03 DJ07 DJ10

Claims (8)

[Claims] 1. A gas-insulated linear unit having a predetermined length, and a gas coupled to one end of the linear unit and bent at an angle of not more than 15 degrees with respect to a lengthwise extension of the linear unit. A plurality of basic units each including an insulated bending unit are connected so that each bending unit is positioned in the same plane substantially parallel to the installation surface, thereby forming a substantially linear gas-insulated bus. In the above, a predetermined basic unit is fixed to a mount installed on the installation surface, and another predetermined basic unit is installed on the installation surface so as to be movable in a direction substantially parallel to the installation surface. A gas-insulated bus bar that is supported on another mount. 2. A gas-insulated linear unit having a predetermined length, and a gas coupled to one end of the linear unit and bent at an angle of not more than 15 degrees with respect to a lengthwise extension of the linear unit. A plurality of basic units each including an insulated bending unit are connected so that each bending unit is located in the same plane substantially perpendicular to the installation surface, thereby forming a substantially linear gas-insulated bus. In the above, a predetermined basic unit is fixed to a gantry installed on the installation surface, and another predetermined basic unit is installed on the installation surface so as to be movable in a direction substantially perpendicular to the installation surface. A gas-insulated bus bar that is supported on another mount. 3. A gas-insulated linear unit having a predetermined length, and a gas coupled to one end of the linear unit and bent at an angle of not more than 15 degrees with respect to a lengthwise extension of the linear unit. A plurality of basic units each including an insulated bending unit are provided so that each includes a unit positioned in a plane substantially parallel to the installation surface and a unit positioned in a plane substantially perpendicular to the installation surface. Individually connected, as a whole, constituting a spiral gas-insulated bus, a predetermined basic unit is fixed to a gantry installed on the installation surface,
Each of the other predetermined basic units is movable in a direction substantially parallel to the installation surface, and the other predetermined basic unit is movable in a direction substantially perpendicular to the installation surface. A gas insulated bus bar, which is supported by another mount installed on the installation surface. 4. A gas-insulated linear unit having a predetermined length and coupled to both ends of the linear unit, and bent at an angle of 15 degrees or less with respect to an extension of the linear unit in the length direction. A plurality of both-end bending units composed of a gas-insulating bending unit and a two-end bending unit are connected such that each bending unit is located in the same plane substantially parallel to the installation surface, and a substantially linear gas-insulating bus is formed. In the configuration, the predetermined both-end bending unit is fixed to a gantry installed on the installation surface, and the other predetermined double-end bending unit can be moved in a direction substantially parallel to the installation surface. A gas-insulated bus bar, which is supported by another mount installed on a surface. 5. A gas-insulated linear unit having a predetermined length and coupled to both ends of the linear unit, and bent at an angle of 15 degrees or less with respect to an extension in the length direction of the linear unit. A plurality of both-end bending units composed of a gas-insulated bending unit and a plurality of bent units are connected so that each bending unit is located in the same plane substantially perpendicular to the installation surface, and a substantially linear gas-insulated bus is formed. In the configuration, the predetermined double-ended bending unit is fixed to a mount installed on the installation surface, and the other predetermined double-ended bending unit can be moved in a direction substantially perpendicular to the installation surface. A gas-insulated bus bar, which is supported by another mount installed on a surface. 6. A gas-insulated linear unit having a predetermined length, and coupled to both ends of the linear unit, and bent at an angle of 15 degrees or less with respect to an extension of the linear unit in the length direction. The two-end bending unit composed of the gas-insulated bending unit and the one in which each bending unit is located in a plane that is substantially parallel to the installation surface, and one that is located in a plane that is substantially perpendicular to the installation surface. Connected to a plurality, the whole constitutes a helical gas-insulated bus, fixed a predetermined double-ended unit to the gantry installed on the installation surface, the other predetermined double-ended unit to the installation surface In order to be able to move in a direction substantially parallel to each other, another predetermined both-end bending unit is supported by another stand installed on the installation surface so as to be movable in a direction substantially perpendicular to the installation surface. A gas-insulated bus bar characterized by having 7. The gas-insulated linear unit according to claim 1, wherein the gas-insulated linear unit is connected between any adjacent basic units or between both end bending units. Gas insulated busbar. 8. The gas insulation according to claim 4, wherein the linear unit portions of the pair of basic units are connected to each other to form a double-end bent unit. Busbar.