JPH0836929A - T type suspension insulator device - Google Patents

Abstract

PURPOSE:To lessen the size of a power transmitting steel tower on which suspension insulator device are vertically installed, and reduce the horizontal conductor spacing (line sag width). CONSTITUTION:A Y-form insulator device of string suspension type consists of long insulators, wherein the string assumes Y form when viewed along the line and assumes I form when viewed in the direction perpendicular to the line, and is installed suspendedly on an arm 2 of a power transmitting steel tower. This insulator device has the same length per insulating and number of constituent insulators, 62 pieces, as a conventional 90-deg. V form insulator device of string suspension type consisting of long insulators, and also has the same min. requisite spacing d2 between the arm mounting point 3 on the steel tower and the insulator device mounting point on the arm base side. Furthermore, this device has a suspension device dangling length 0.73m longer than conventional when V-angle of the Y-form insulator string is 110deg., but has an 8m shorter overall length of the arm, and a 4.6m shorter distance between horizontal lines, i.e., the line sag width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension insulator device in which a suspension insulator string is long, and more particularly to a suspension insulator device installed in a place where the suspension insulator string is large and largely shakes.

[0002]

2. Description of the Related Art The number of insulators in a series of insulators increases remarkably as the transmission voltage becomes extremely high, but the number of insulators also increases in order to increase the leakage distance of the insulators even when installed in a salt-damaged area.
In the area where pollution degree is severe, the insulators become long.

If the length of the insulator string becomes long, the hanging length of the I-suspension insulator device becomes extremely long, so that the height of the tower becomes extremely high, and in consideration of the case where it is rocked by a lateral wind pressure, Since it is necessary to increase the arm length, it is inevitable to increase the size of the tower. For this reason, conventionally, a V suspension suspension insulator device has been used, which has a shorter suspension device suspension length than the I suspension suspension insulator device, and moreover is difficult to move with respect to the lateral wind pressure.

Further, like the V-suspension suspension insulator device, the suspension device suspension length is shorter than that of the I-suspension suspension insulator device, as shown in FIG. 10, and is a twisted X-type insulator device (Japanese Patent Publication No. 38-25596).
Issue) is also proposed. This is a type in which an upper half V-shaped portion 51 and a lower half inverted V-shaped portion 52 are twisted at a right angle from each other with an X-shaped crossing point as a base point, and four porcelain insulators 53 are connected with a cross connecting metal fitting 5
4, the upper half V-shaped portion 51 is connected at its upper end to a steel tower arm 55, and the electric wire 12 is suspended at the lower end of the lower half inverted V-shaped portion 53 via suspension clamps 56. Is.

[0005]

However, for example, as shown in FIG.
Insulator length on one side is 13.015 m at V angle of 90 °,
In the V suspension suspension insulator device having 62 insulators, the hanging length of the suspension insulator device can be significantly reduced as compared with the I suspension suspension device having the same number of insulators, but the interval of attachment points of the suspension insulator device is 18. The required minimum distance between the attachment point 3 of the steel tower and the attachment point 5 of the suspension on the tower side is 1.5 m.
The arm length increases to 20.4 m. Therefore, even in the case of the V suspension suspension insulator device, an increase in the size of the steel tower is unavoidable, which increases the construction cost of the steel tower and increases the distance between the steel tower horizontal lines, that is, the width under the wire, and the site compensation cost under the wire increases. there were.

A twist X type insulator device shown in FIG.
8-25596 gazette), similar to the V suspension suspension insulator device,
The number of insulators is about double that of the I-suspension insulator device, and the structure is more complicated than that of the V-suspension insulator device or the I-suspension insulator device, and there is a disadvantage that the manufacturing cost rises.

Further, when the V angle of the lower half inverted V-shaped portion 52 is set to be large, for example, 120 °, or the catenary angle between the young number (power station side) and the old number (substation side) of the span. Because of the difference, the V-angle of the lower half inverted V-shaped portion 52 is restricted where the insulator string is inclined in the direction of the track, so that it is necessary to increase the device hanging length.

That is, when the V angle is 120 °, for example, the bottom angle of the triangle formed by the lower half inverted V-shaped portion 52 and the electric wire 13 is as small as 30 °, and the catenary between the young and the old.
Since the insulator series tilts in the direction of the line due to the difference in angle, considering the wire catenary angle and the angle (vibration angle) when the wire sways, the force line of the load acting on the suspension clamp 56 is the diagonal angle γ of the bottom angle.
(Fig. 10) It is easy to come off, and when it goes upward, the insulator string 53 sags, and when it goes down, the electric wire is compressed. For this reason,
Since the V angle of the lower half inverted V-shaped portion 52 is made small so that the force lines of the load acting on the suspension clamp 56 do not easily deviate from the diagonal γ, the device hanging length becomes long, which is a feature of the twist X-type insulator device. The advantage of short device droop is lost.

Further, in the twisted X-type insulator device, when the insulator device flows in the track direction due to uneven snow accretion or a slit jump between the diameters, the electric wire is connected to the preceding insulator string of the lower half inverted V-shaped portion 52. Tension is applied, and the trailing insulator string loses tension and becomes slack (see FIG. 10). In such a loose state, radio interference occurs, and if the slack increases further, contact between the insulator and the electric wire, damage to the insulator and flashover accident,
There is a risk that it will interfere with the transmission of power.

Therefore, the twisted X-type insulator device has problems in terms of manufacturing cost, device hanging length, power transmission supply, etc. as compared with the V suspension suspension insulator device.

In addition to the suspension insulator device described above, a Y suspension suspension insulator device has been proposed which is Y-shaped when viewed from the line direction and I-shaped when viewed from the direction perpendicular to the line. However, this one has a V angle of around 90 °, which makes the device droop longer than the 90 ° V suspension suspension insulator device, and is more prone to sideways swing, and moreover, the upper half V-shaped portion is slack when swinging sideways. It has not yet been put to practical use because the insulator may be damaged by the contact between the leeward side insulator series and the lower half I-shaped insulator series. Therefore, a jumper wire Y suspension device (actual application: Sho 43-954) is provided in which a weight device is provided at the lower end of the lower half I-shaped portion of the Y-shaped insulator string to prevent the swinging of the jumper wire.
No. 62) has been proposed. Also, when viewed from the track direction, Y
A jumper wire supporting device in which the lower ends of two sets of Y-shaped insulators, which are in the shape of a letter, are connected by a connecting member so that they form an inverted V-shape when viewed from the direction perpendicular to the line (Japanese Patent Publication No. Sho 49-21868).
No.) is also proposed.

However, the Y suspension suspension insulator device and the jumper wire support device provided with the weight device have a more complicated structure than the V suspension suspension insulator device, and in the former case, the weight suspension device is provided. Further, the height of the tower must be increased, and in the latter case, problems similar to those of the twisted X-type insulator device occur due to uneven snow accretion, a slit jump between the diameters, and the like.

The present invention has been made in view of the above circumstances, and the number of insulators obtained by subtracting the number of insulators of the one-sided insulator series of the V-shaped portion from the length of one insulator and the total number of insulators is as follows. The 90 ° V suspension suspension insulator device (hereinafter, a predetermined 90 °) which is the same and has the same required minimum distance between the attachment point of the armature of the tower body of the power transmission tower and the attachment point of the suspension insulator device on the side of the armrest base.
Shorter than the device hanging length of (° V suspension suspension insulator device),
Moreover, it is an object of the present invention to provide a Y suspension suspension insulator device capable of shortening the total length of arms and the distance between horizontal lines, that is, the width under the wire of a power transmission tower on which a predetermined 90 ° V suspension suspension device is installed. Further, the device hanging length is somewhat longer than the hanging length of a predetermined 90 ° V suspension suspension insulator device, but it is a predetermined 90 ° V.
An object of the present invention is to provide a Y suspension suspension insulator device that can significantly reduce the total arm length and the distance between horizontal lines of a power transmission tower with the suspension suspension device suspended.

[0014]

In the Y-suspension suspension insulator device of the present invention, the suspension insulator device suspended from the armor of the jumper portion of the suspension tower or the tension steel tower is Y-shaped when viewed from the line direction. In the Y-suspending porcelain device which has an I-shape when viewed from the direction perpendicular to the line, the distance between the attachment point of the pendant insulator device at the tip of the arm and the attachment point of the tower is the applicable lateral vibration angle. θ
_The distance between the attachment point of the suspension insulator device at the tip of the arm and the attachment point of the tower arm is L ₁ when a predetermined abnormal insulation distance d ₁ is set between the Y suspension suspension insulator device and the tower body. Then, the length obtained by adding the Y-suspension insulator device attachment point interval d ₃ of the armrest to the minimum required distance d ₂ between the arm attachment point of the tower and the suspension insulator device attachment point on the arm base side. When L ₂ is smaller than the interval L ₁ , it is at least the interval L ₁ , and when the length L ₂ is the interval L ₁ or more, it is the length L ₂ .

Here, the applicable limit lateral vibration angle θ ₁ is generally the maximum lateral vibration angle when the wind speed is 40 m / s under the high temperature season design condition, and usually 70 ° is adopted.

The Y suspension suspension insulator device according to the present invention has a Y
If the V angle of the upper half V-shaped portion of the suspension insulator string is set to an angle at which the length L ₂ and the interval L ₁ are equal, the hanging length is slightly smaller than the predetermined 90 ° hanging hanging insulator device hanging length. It will be longer,
It is possible to significantly reduce the total length of arm wires and the distance between horizontal lines of a power transmission tower in which a predetermined 90 ° V suspension suspension device is installed.

When the V angle of the upper half V-shaped portion of the Y suspension insulator series is increased from the angle at which the length L ₂ and the interval L ₁ are equal to each other, the hanging length of the suspension insulator device is gradually shortened. Therefore, the distance between the horizontal lines of the transmission tower and the total length of the armature gradually increase, but as described above, the length L ₂ and the interval L are set.
_{When the} angle becomes equal to _1, it becomes a little longer than the device hanging length of a predetermined 90 ° V suspension suspension insulator device, and the total length of the armrests and the distance between horizontal lines are significantly shortened. Before the distance between horizontal lines and the total length of the arms are almost the same as the distance between horizontal lines and the total length of the armature of the transmission tower with the predetermined 90 ° V suspension suspension device installed, the hanging length of the Y suspension suspension device is Becomes shorter than the hanging length of a predetermined 90 ° V suspension suspension device.

That is, the Y suspension suspension insulator device according to the present invention is
The V angle of the upper half V-shaped portion of the Y suspension insulator series is set such that the hanging length of the Y suspension suspension insulator device is equal to the predetermined 90 ° suspension length of the V suspension suspension insulator device. If the total length of the armrests of the steel tower or the distance between the horizontal lines is within a range of an angle equal to the total length of the armor wires of the power transmission tower or the distance between the horizontal lines with a predetermined 90 ° V suspension suspension device, Compared with the ° V suspension suspension insulator device and the transmission tower in which this device is suspended, the hanging length of the suspension insulator device, the total length of the arms and the distance between the horizontal lines can be shortened, and the transmission tower can be miniaturized.

On the contrary, when the V angle of the upper half V-shaped portion of the Y suspension insulator series is made smaller from the angle at which the length L ₂ and the interval L ₁ become equal to each other, the Y suspension suspension insulator of the armband is formed. The device mounting point interval becomes shorter, but the arm length is at least the above interval L
Since it is in ₁ , the length does not change, and only the hanging length of the suspension insulator device and the distance between the horizontal lines of the steel tower become longer. Therefore, as the lower limit of the V angle of the Y suspension suspension insulator device, the ratio of the horizontal load to the vertical load is approximately 1, and the predetermined 90
Around 90 ° is desirable because the distance between horizontal lines can be shortened as compared with a ° V suspension suspension device.

On the tower body side of the yoke part that connects the upper half V-shaped portion and the lower half I-shaped portion of the Y suspension suspension insulator device to the tower body side, an insulator string on the tower body side of the upper half V-shaped portion is provided. Since the protrusion at the lower end of the insulator for restricting the downward rotation of the insulator is provided, it is possible to avoid contact with the insulator string of the lower half I-shaped portion even if the insulator string on the tower side is largely sagging.

When the Y suspension suspension insulator device according to the present invention flows in the line direction, the wire tension acts on the entire insulator string which is I-shaped when viewed from the direction perpendicular to the line as shown in FIG. Therefore, unlike the trailing insulator string in the twisted X-shaped insulator device shown in FIG.

[0022]

EXAMPLES Examples of the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, 1 is a tower body of a power transmission tower, 2 is a armor of the power transmission tower, and a Y suspension suspension insulator device 6 having 62 insulators is hung vertically. In armband 2, 3 is tower 1
Of the armor attachment point, 4 is the attachment point of the suspension insulator device at the tip of the armature (hereinafter referred to as the attachment point of the tip of the armrest), and 5 is the attachment point of the suspension insulator device on the side of the armrest. The minimum required distance d ₂ between the armrest attachment point 3 of the tower body 1 and 1.5 is 1.5 m.

The Y-suspending suspension insulator device 6 comprises an upper half V-shaped portion 7, a lower half I-shaped portion 8, a lower half I-shaped portion 8 and a suspension clamp 11 and an upper half V-shaped portion 7 which are attached to the Y suspension insulator series 9. And lower half I-shaped part 8
It consists of an inverted triangular yoke part 10 that connects the
Attach the shaped portion 7 to the arm 2 with the suspension device mounting bracket.

The upper half V-shaped portion 7 has 42 insulators on one side, and the one-sided insulator length is 8190 mm.
The number of insulators is 20 and the insulator length is 3900 mm (Fig. 3 ~
(The same applies to the length and the number of insulators of the insulator series of the upper half V-shaped portion and the lower half I-shaped portion shown in FIG. 6). In the yoke portion 10 shown in FIGS. 1 to 6, the upper end width is 500 mm, and the attachment point of the lower half I-shaped portion 8 is at the intersection of the extension lines of the two insulator pairs of the upper half V-shaped portion 7. Therefore, the height of the yoke portion 10 is 175 mm in FIGS. 1 and 2, 144 mm in FIG. 3 and 117 m in FIG.
m, 210 mm in FIG. 5, and 250 mm in FIG.

In the yoke portion 10 shown in FIGS. 2 to 6, the insulator 16 at the lower end of the insulator body 15 on the tower side of the upper half V-shaped portion 7 is connected to the right angle socket clevis 17 as shown in FIG. 1
At the end 20 on the tower side that is connected via the single-link 18 and the right-angle clevis 19, the right-angle clevis 19, the single-link 18,
In order to limit the downward rotation of the insulator 16 via the right-angled socket clevis 17, a projection 21 that engages with the lower end of the groove bottom of the right-angled clevis 19 is provided (it should be noted that the end on the opposite side of the tower body). 20 'is also provided with a protruding portion 21'). This eliminates contact between the insulator string 23 on the leeward side and the insulator string 23 on the leeward side in a straight line with the insulator string 22 on the leeward side and having an application limit lateral vibration angle of 70 °. The protrusion 2
1 may be configured to be engaged with the downward side surface of the right-angled clevis 19, for example. The protrusion 21 may be separate from the yoke 10.

Y having a V angle of 110 ° shown in FIGS. 1 and 2.
The suspension / suspending insulator device 6 has a mounting point interval of 1550
0 mm, the hanging length of the suspension insulator device is 11370 mm, and the upper half in a state in which the suspension insulator device mounting point 5 on the base side of the arm member 2 is located at a required minimum interval 1500 mm from the arm member mounting point 3 of the tower body 1. When the windward insulator string of the V-shaped portion 7 and the insulator string of the lower half I-shaped portion 8 form a straight line and the applicable limit lateral vibration angle is 70 °, at least a predetermined insulation is provided between the insulator and the tower body 1. Interval 1
Has secured 350 mm. Therefore, the length of the arm 2 is Y
It can be set to 17,000 mm by adding the minimum required interval of 1500 mm to the interval of mounting points of the suspension and suspension insulator device of 15500 mm.

Comparing this with the predetermined 90 ° V suspension suspension insulator device shown in FIG. 7, the total length of the armrest is 8 m shorter and the suspension insulator device suspension length is 0.73 m longer. Therefore, compared to the increase in the hanging length of the suspension insulator device, the total length of the armpiece can be shortened significantly.
Moreover, since the distance between horizontal lines is shortened by 4.6 m, the width under the line can be greatly reduced.

FIG. 3 shows a Y suspension suspension insulator device having a V angle of 120 °. In this embodiment, the arm suspension 2 has a Y-suspension-insulator device mounting point interval of 16300 mm, and the windward device length when the application limit lateral deflection angle is 70 ° is 16 mm shorter than that of the V-angle 110 ° shown in FIG. It is 15359 mm.
For this reason, the arm length is 16 mm between the Y suspension suspension insulator device attachment points.
17800 with minimum required spacing 1500mm added to 300mm
to mm. This embodiment has a predetermined 90 ° shown in FIG.
Compared with the V suspension suspension insulator device, the suspension length of the suspension insulator device is 0.07 m longer, but the total length of the armrest is 6 m and the distance between horizontal lines is 3.4 m shorter.

FIG. 4 shows a Y suspension suspension insulator device having a V angle of 130 °. In this embodiment, the Y-suspension insulator device mounting point interval of the arm 2 is 17,000 mm and the arm length is 18.
500mm, hanging insulator device hanging length is 10000mm,
Compared with the predetermined 90 ° V suspension suspension insulator device shown in FIG.
The total arm length is 4.4m short, the distance between horizontal lines is 2.5m short, and the suspension length of the suspension device is 0.64m short.

FIG. 5 shows a Y suspension suspension insulator device having a V angle of 100 °. In this embodiment, the suspension length of the suspension insulator device is 12065 mm, and the interval between the Y suspension suspension insulator device attachment points is 1.
At 4500 mm, compared with the predetermined 90 ° V suspension suspension insulator device shown in FIG. 7, the suspension insulator device suspension length is about 1.425 m longer, but the Y suspension suspension insulator device attachment point interval is 4.4 m shorter.
However, when the suspension insulator device attachment point 5 on the side of the armrest is located at a position separated from the armrest attachment point 3 by a required minimum distance of 1500 mm,
Insulation distance d when a predetermined abnormality occurs between the windward device (device length 15396 mm) and the tower body 1 when the application limit lateral vibration angle is 70 °
_{Since 1} cannot be taken, the arm length of this embodiment is 17,000 mm, which is the same as that shown in FIG.

FIG. 6 shows a Y suspension suspension insulator device having a V angle of 90 °. In this embodiment, the suspension length of the suspension insulator device is 12725 mm, and the interval between the Y suspension suspension insulator device attachment points is 13.
At 400 mm, compared with the predetermined 90 ° V suspension suspension insulator device shown in FIG. 7, the suspension insulator device suspension length is 2.085 m longer, but the Y suspension suspension insulator device mounting point interval is shorter by 5.5 m. However, for this reason, the arm length is the same as that shown in FIG. 2 for the same reason as that of the V angle of 100 ° (FIG. 5).
I am at 0 mm.

Here, the first embodiment described above (the number of insulators is 62, the number of insulators is 42 on the upper half V-shaped side, 20 on the lower half I-shaped side, and the V angle is 90 °, 100 °, 110
°, 120 °, 130 °) and the predetermined 90 ° shown in FIG.
V Suspension suspension insulator device (the number of insulators on each side is 62), the suspension insulator device attachment point spacing, suspension insulator device suspension length, horizontal line distance (axis distance between left and right suspension devices) and arm length (left and right) Table 1 shows the results of comparative examination of the length between the tips of both arms.

Further, comparison of another embodiment of the present invention and the corresponding predetermined 90 ° V suspension suspension device with respect to the suspension insulator device attachment point spacing, suspension insulator device suspension length, horizontal line distance and arm length. The examination results are shown in Tables 2, 3, and 4.

[0034]

[Table 1]

[0035]

[Table 2]

[0036]

[Table 3]

[0037]

[Table 4]

However, Table 2 shows the second embodiment (the number of insulators is 5).
7 pieces, insulator number allocation 39 pieces on the upper half V-shaped side, lower half I
In the case of a fixed 90 ° V suspension suspension insulator device (the number of insulators on one side is 57 insulators), Table 3 shows the third embodiment (the number of insulators is 52, and the number of insulators is higher). In the case of a half V-shaped side 36 pieces, a lower half I-shaped side 16 pieces) and a predetermined 90 ° V suspension suspension insulator device (the number of insulators on one side is 52 pieces), Table 4
Is the fourth embodiment (the number of insulators is 43, the number of insulators is 31 on the upper half V-shaped side, 12 on the lower half I-side) and a predetermined 9
0 ° V suspension suspension insulator device (the number of insulators on one side is 43
Individual).

In Tables 1 to 4 above, the V angle 120
As for each of the embodiments, the suspension insulator suspension length is 0.06 m to 0.1 m longer than the predetermined 90 ° V suspension suspension insulator devices corresponding thereto, but the distance between horizontal lines is 1.68.
m-3.4m shorter, arm length 2.6m-6m shorter. Further, regarding each of the examples with a V angle of 130 °, the hanging length of the hanging insulator device is shorter by 0.52 m to 0.64 m, and the distance between the horizontal lines is 0, as compared with the predetermined 90 ° V hanging suspension insulator devices corresponding thereto. Shorter by 7m to 2.5m, the total length of the armband is 1.2m
~ 4.4m shorter. In each of the 120 ° and 130 ° examples, the predetermined 90 ° V suspension suspension device has a suspension suspension device hanging length, a horizontal line distance, and a shortening ratio with respect to the total length of the braces, which are the horizontal line distances of the fourth example. And the arm length is almost the same except that the shorter the number of insulators is, that is,
The longer the insulator length is, the larger it is.

The total arm length is the shortest in each embodiment in which the V angle is 90 ° to 110 °. Comparing this with a predetermined 90 ° V suspension suspension insulator device, it is 8 m in the first embodiment in which the number of insulators is maximum, and is 4. in the fourth embodiment in which the number of insulators is minimum.
2m shorter. In the first to fourth examples in which the V angle is 110 °, the distance between horizontal lines can be shortened by 2.4 m to 4.6 m from a predetermined 90 ° V suspension suspension insulator device, and the suspension insulator device suspension length is On the contrary, it is 0.64m to 0.77m longer. Then, the hanging length of the predetermined 90 ° V suspension hanging insulator device, the distance between the horizontal lines, and 90 °, 100 relative to the total length of the armband.
The shortening ratios of the respective examples of 110 ° and 110 ° are almost the same in the first to third embodiments, and in comparison, the device hanging length in the fourth embodiment is almost the same as that in the first to third embodiments. However, the distance between the horizontal lines and the total length of the armband are slightly poor.

[0041]

As described above, according to the present invention, the hanging length of the suspension insulator device is slightly or somewhat longer than that of the predetermined 90 ° V suspension suspension insulator device by the structure of claim 3, but the arm member Since the total length and the distance between the horizontal lines, especially the total length of the arms can be greatly reduced, it is possible to reduce the size of the DC power transmission tower having a single-stage arm for suspending the suspension insulator device. Further, according to the configuration of claim 4, the hanging length of the suspension insulator device, the total length of the arms and the distance between the horizontal lines are set to a predetermined value.
Since it can be further shortened compared to the 0 ° V suspension suspension insulator device, it is possible to reduce the size of the AC power transmission tower in which the arms for vertically suspending the suspension insulator device have multiple stages in the vertical direction. Therefore, it is an invention with great economic effect when it is applied to transmission towers such as ultra-high voltage transmission areas where the number of insulators will increase, and areas where salt damage is severe, where it is possible to reduce tower construction costs, land line compensation costs, etc. .

[Brief description of drawings]

FIG. 1 is a diagram for explaining attachment to an armband according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining the attachment to the armrest of the embodiment in which the V angle of the Y suspension insulator string is 110 °.

FIG. 3 is a diagram for explaining the attachment to the armrest of the embodiment in which the V angle of the Y suspension insulator string is 120 °.

FIG. 4 is a view for explaining the attachment to the armrest of the embodiment in which the V angle of the Y suspension insulator string is 130 °.

FIG. 5 is a diagram for explaining the attachment to the arm bar of the embodiment in which the V angle of the Y suspension insulator string is 100 °.

FIG. 6 is a diagram for explaining the attachment to the arm bar of the embodiment in which the V angle of the Y suspension insulator string is 90 °.

FIG. 7 is a diagram for explaining the attachment of a conventional 90 ° V suspension suspension insulator device to a armband.

FIG. 8 is a diagram for explaining the function of suppressing the downward descent of the insulator on the leeward side by the yoke portion of the present embodiment.

FIG. 9 is a side view of the embodiment tilted in the track direction.

FIG. 10 is a side view of a twisted X-type insulator device tilted in the track direction.

[Explanation of References] 1 Tower 2 Bracket 3 Tower arm attachment point 4 Arm suspension tip insulator attachment point 5 Arm base pendant attachment point 6 Y suspension pendulum device 7 upper half V Shape part 8 Lower half I shape part 9 Y suspension insulator string 10 Yoke part 21 Projection part θ ₁ Applicable lateral vibration angle d ₁ Insulation interval in case of a predetermined error d ₂ Required minimum interval d ₃ Y Suspension suspension insulator device mounting point interval

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Shikata, 3-3-22 Nakanoshima, Kita-ku, Osaka City, Kansai Electric Power Co., Inc. (72) Tohru Sakai, 3-22-3 Nakanoshima, Kita-ku, Osaka Kansai Electric Power Co., Ltd. (72) Inventor Yoshihisa Maeda 13-1 Isoshima-Minamicho, Hirakata-shi, Osaka Japan Cat Co., Ltd. (72) Inventor Akihiro Katayama 13-1 Isojima-Minami-cho, Hirakata-shi, Osaka Japan Catan Co., Ltd. (72) Inventor Hiroki Sakamoto 13-1 Isojima-Minamimachi, Hirakata City, Osaka Prefecture

Claims (5)

[Claims] 1. A Y suspension suspension insulator device in which the suspension insulator device hung on the armor (2) of the power transmission tower is Y-shaped when viewed from the line direction and I-shaped when viewed from the direction perpendicular to the line. The installation point (4) of the suspension insulator device at the end of the arm and the arm mounting point (3) of the tower (1).
The spacing, predetermined abnormal insulation gap between the take applicable limit lateral oscillation angle (theta ₁₎ Y hanging suspension insulator apparatus and tower body ₍₁₎ (d 1)
If the distance between the attachment point (4) of the suspension insulator device at the tip of the armature and the armature attachment point (3) of the tower body (1) is (L ₁ )
The Y suspension suspension device for the arm (2) is installed at the required minimum distance (d ₂ ) between the attachment point (3) of the tower (1) and the attachment point (5) for the suspension base of the arm base. Length (L ₃ ) including mounting point interval (d ₃ )
₂ ) is smaller than the distance (L ₁ ) and at least equal to the distance (L ₁ ), and the length (L ₂ ) is equal to the distance (L ₁ ).
In the above, the Y suspension suspension device is characterized in that it has the length (L ₂ ). 2. An insulator at the lower end of the insulator string on the tower side of the upper half V-shaped part is connected to the tower side of the yoke part connecting the upper half V-shaped part and the lower half I-shaped part of the Y suspension insulator series. 2. The Y suspension suspension insulator device according to claim 1, further comprising a protrusion that limits downward rotation. 3. The V angle of the upper half V-shaped portion of the Y suspension insulator string is set to 90.
The Y suspension suspension insulator device according to claim 1 or 2, wherein the length (L ₂ ) and the interval (L ₁ ) are within an angle range from the front and back of the same. 4. The V angle of the upper half V-shaped portion of the Y suspension insulator series is set to Y
From the angle at which the hanging length of the hanging suspension insulator device is equal to the hanging length of the predetermined 90 ° V hanging hanging insulator device, the 90 ° V hanging suspending insulator device with the predetermined arm length or the distance between horizontal lines of the power transmission tower was hung down. The Y according to claim 1 or 2, wherein the length is within the range of an angle equal to the total length of the armor of the power transmission tower or the distance between horizontal lines.
Hanging suspension insulator device. 5. The Y suspension suspension insulator device according to claim 1, wherein the power transmission tower is a jumper portion of a suspension steel tower or a tension steel tower.