JPH04301323A - Noise preventing insulator - Google Patents

Noise preventing insulator

Info

Publication number
JPH04301323A
JPH04301323A JP6654491A JP6654491A JPH04301323A JP H04301323 A JPH04301323 A JP H04301323A JP 6654491 A JP6654491 A JP 6654491A JP 6654491 A JP6654491 A JP 6654491A JP H04301323 A JPH04301323 A JP H04301323A
Authority
JP
Japan
Prior art keywords
pleat
insulator
section
noise
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6654491A
Other languages
Japanese (ja)
Other versions
JPH06101261B2 (en
Inventor
Yoshihiro Suzuki
良博 鈴木
Shigeru Ogawa
茂 小川
Hiroyuki Wakamatsu
広幸 若松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP6654491A priority Critical patent/JPH06101261B2/en
Publication of JPH04301323A publication Critical patent/JPH04301323A/en
Publication of JPH06101261B2 publication Critical patent/JPH06101261B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the generation of noise by wind. CONSTITUTION:A shade section 2 is provided on an insulator main body 1, and multiple circular and concentric pleat sections 3 are provided on the inside face of the shade section 2. The first pleat section 3a provided at the outermost end of the shade section 2 is made longest than other pleat sections 3 and extended most downward. The angle of the line L passing the lower end edge section of the first pleat section 3a and the lower end edge section of the second pleat section 3b against the horizontal line S is made at least 35 deg. or above. The angle theta is set to 40 deg. here. When multiple insulator main bodies 1 are connected to form a suspended insulator train 10, the insulator train 10 rarely generates noise when applied with a strong wind.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】本発明は、風による音の発生を防
止することのできる騒音防止碍子に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise-preventing insulator capable of preventing wind-induced noise.

【0002】0002

【従来の技術】一般に、懸垂碍子を構成する碍子本体に
は笠部と、その笠部の内側面に円環状に且つ同心状に形
成された複数のひだ部とが設けられている。そして、複
数の懸垂碍子が直列に連結されて懸垂碍子連が形成され
、同懸垂碍子連は鉄塔の支持アームに吊下支持されて、
その下端に送電線が支持されるようになっている。
2. Description of the Related Art Generally, an insulator body constituting a suspended insulator is provided with a cap and a plurality of annular and concentric folds formed on the inner surface of the cap. A plurality of suspension insulators are connected in series to form a suspension insulator chain, and the suspension insulator chain is suspended and supported by the support arm of the steel tower.
Power lines are supported at its lower end.

【0003】0003

【発明が解決しようとする課題】ところが、懸垂碍子連
が強風にさらされて、各懸垂碍子のひだ部にその風が当
たると、ひだ部とひだ部との間の空間で空気振動が発生
して音が発生し、非常に大きな騒音となるケースがあっ
た。本発明の目的は、風による音の発生を防止すること
のできる騒音防止碍子を提供することにある。
[Problem to be Solved by the Invention] However, when a chain of suspended insulators is exposed to strong winds and the wind hits the folds of each suspended insulator, air vibrations occur in the space between the folds. There were cases where the noise was extremely loud. An object of the present invention is to provide a noise prevention insulator that can prevent noise from being generated by wind.

【0004】0004

【課題を解決するための手段】上記の目的を達成するた
めに、この発明では、碍子本体に笠部を設けるとともに
、その笠部の内側面に円環状に且つ同心状に複数のひだ
部を設けた碍子において、前記笠部の最外端に設けられ
た第1ひだ部と、その第1ひだ部と隣会う第2ひだ部と
の間には、第1ひだ部の先端縁部と第2ひだ部の先端縁
部とを通る線が、水平方向線に対して少なくとも35度
以上の角度になるような関係を設定したものである。
[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cap section on the insulator body, and a plurality of annular and concentric folds on the inner surface of the cap section. In the provided insulator, there is a gap between the first pleat provided at the outermost end of the shade and the second pleat adjacent to the first pleat. A relationship is set such that a line passing through the tip edge of the two pleats forms an angle of at least 35 degrees with respect to a horizontal line.

【0005】[0005]

【作用】従って、本発明によれば、碍子が強風にさらさ
れても、ひだ部とひだ部との間の空間での音の発生が防
止される。
Therefore, according to the present invention, even if the insulator is exposed to strong winds, the generation of sound in the space between the pleats is prevented.

【0006】[0006]

【実施例】以下、本発明を具体化した一実施例を図面に
基づいて説明する。図1に示すように、懸垂碍子を構成
する碍子本体1は笠部2と、同笠部2の内側面に円環状
に且つ同心状に形成された複数のひだ部3と、更に前記
笠部2の中央上部に形成された有蓋円筒状の頭部4とに
より一体形成されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment embodying the present invention will be described below with reference to the drawings. As shown in FIG. 1, an insulator main body 1 constituting a suspended insulator includes a cap part 2, a plurality of folds 3 formed annularly and concentrically on the inner surface of the cap part 2, and further includes a cap part 2. 2 and a capped cylindrical head 4 formed at the upper center thereof.

【0007】頭部4の外周にはキャップ金具6がセメン
ト5により被冠固定されている。キャップ金具6の上面
には係合凹部6aが形成され、直上に連結される別の懸
垂碍子のピン金具7が係合し得るようになっている。ピ
ン金具7の上部は前記頭部4の内部に形成された嵌合凹
部8に挿入され、セメント9により固定されている。 又、ピン金具7の下端は直下に連結される別の懸垂碍子
の前記キャップ金具6の嵌合凹部6aに係合される。こ
のようにして複数の懸垂碍子が直列に連結されることに
より、懸垂碍子連10が形成されている。
A cap fitting 6 is fixed to the outer periphery of the head 4 with cement 5. An engagement recess 6a is formed on the upper surface of the cap metal fitting 6, so that a pin metal fitting 7 of another suspension insulator connected directly above can be engaged therewith. The upper part of the pin fitting 7 is inserted into a fitting recess 8 formed inside the head 4 and fixed with cement 9. Further, the lower end of the pin fitting 7 is engaged with the fitting recess 6a of the cap fitting 6 of another suspension insulator connected directly below. A suspension insulator chain 10 is formed by connecting a plurality of suspension insulators in series in this manner.

【0008】ここで、前記笠部2に形成されたひだ部3
の内、笠部2の最外端に形成されたひだ部3を第1ひだ
部3aとし、その第1ひだ部3aと隣会うひだ部3を第
2ひだ部3bとする。第1ひだ部3aは他のひだ部3と
比較して最も長く、つまり最も下方まで延びるように形
成され、第2ひだ部3bは第1ひだ部3aより短く形成
されている。即ち、第1ひだ部3aと第2ひだ部3bと
の間には、図1に示すように、第1ひだ部3aの下端縁
部と第2ひだ部3bの下端縁部とを通る線Lの、水平方
向線Sに対する角度θが少なくとも35度以上になるよ
うな関係が設定されている。尚、本実施例ではその角度
θが40度に設定されている。
[0008] Here, the folds 3 formed in the cap 2
Among these, the fold 3 formed at the outermost end of the cap 2 is defined as a first fold 3a, and the fold 3 adjacent to the first fold 3a is defined as a second fold 3b. The first pleat section 3a is formed to be the longest compared to the other pleat sections 3, that is, to extend furthest downward, and the second pleat section 3b is formed to be shorter than the first pleat section 3a. That is, as shown in FIG. 1, between the first pleat part 3a and the second pleat part 3b, there is a line L passing through the lower edge of the first pleat part 3a and the lower edge of the second pleat part 3b. A relationship is set such that the angle θ with respect to the horizontal direction line S is at least 35 degrees or more. In this embodiment, the angle θ is set to 40 degrees.

【0009】本出願の発明者は、第1ひだ部3aの下端
縁部と第2ひだ部3bの下端縁部とを通る線Lが、水平
方向線Sに対して少なくとも35度以上の角度になるよ
うに設定すれば、風による音の発生を防止できることを
、以下のような試験により確認した。ここで、その試験
方法について説明すると、図2に示すように、風洞実験
室11の壁面には、地上高1mの高さに80cm四方の
送風口12が形成されている。風洞実験室11の天井に
は、複数の懸垂碍子を連結してなる懸垂碍子連10が送
風口12から75cm離れた位置に吊下支持されている
。又、風により懸垂碍子連10から発生される騒音の音
圧レベルを測定するために、地上高1.3mの高さで懸
垂碍子連10から50cm離れた位置に集音マイク13
が設置されている。尚、送風口12からは風速30m/
s の風が懸垂碍子連10に対して垂直方向、つまり水
平方向線Sと平行に送られる。
The inventor of the present application proposed that the line L passing through the lower edge of the first pleat 3a and the lower edge of the second pleat 3b is at an angle of at least 35 degrees or more with respect to the horizontal line S. We have confirmed through the following tests that wind-induced noise can be prevented if the settings are set as follows. Here, the test method will be explained. As shown in FIG. 2, an 80 cm square ventilation opening 12 is formed on the wall of the wind tunnel laboratory 11 at a height of 1 m above the ground. A suspension insulator chain 10 formed by connecting a plurality of suspended insulators is suspended from the ceiling of the wind tunnel laboratory 11 at a position 75 cm away from the air outlet 12. In addition, in order to measure the sound pressure level of noise generated from the suspended insulator chain 10 due to the wind, a sound collecting microphone 13 was placed at a height of 1.3 m above the ground and 50 cm away from the suspended insulator chain 10.
is installed. In addition, the wind speed from the ventilation port 12 is 30 m/
A wind of s is directed perpendicularly to the suspended insulator chain 10, ie parallel to the horizontal line S.

【0010】試験試料としては、複数の碍子本体が用意
されている。即ち、図3に示すように、碍子本体Aは、
第1ひだ部3aより第2ひだ部3bが長く形成され、第
1ひだ部3aの下端縁部と第2ひだ部3bの下端縁部と
を通る線Lが、水平方向線Sに対して碍子中心側が下が
る17度の角度をなすものである。図4に示すように、
碍子本体Bは、第1ひだ部3aが第2ひだ部3bより3
mm長いだけ、つまり第1ひだ部3aの下端縁部と第2
ひだ部3bの下端縁部とを通る線Lの、水平方向線Sに
対する角度がほとんどないものである。
A plurality of insulator bodies are prepared as test samples. That is, as shown in FIG. 3, the insulator body A is
The second pleat part 3b is formed longer than the first pleat part 3a, and the line L passing through the lower edge of the first pleat part 3a and the lower edge of the second pleat part 3b is aligned with the horizontal direction line S of the insulator. It forms an angle of 17 degrees with the center side facing down. As shown in Figure 4,
In the insulator body B, the first fold part 3a is 3 times smaller than the second fold part 3b.
mm longer, that is, the lower edge of the first pleat 3a and the second
The line L passing through the lower edge of the pleated portion 3b has almost no angle with respect to the horizontal line S.

【0011】図5に示すように、碍子本体Cは、笠部2
の外端縁部が第1ひだ部3aより更に外方へ突出してい
るものである。そして、第1ひだ部3aは第2ひだ部3
bより長く形成され、第1ひだ部3aの下端縁部と第2
ひだ部3bの下端縁部とを通る線Lが、水平方向線Sに
対して碍子中心側が上がる40度の角度をなしている。
As shown in FIG. 5, the insulator body C has a cap 2
The outer end edge of the groove protrudes further outward from the first pleated portion 3a. The first fold part 3a is the second fold part 3.
b, and the lower edge of the first pleat 3a and the second
A line L passing through the lower edge of the pleated portion 3b forms an angle of 40 degrees with respect to the horizontal line S, with the center side of the insulator rising upward.

【0012】図6に示すように、碍子本体Dは、前記碍
子本体Cと比較して第1ひだ部3aがその中間部で外方
側へ折曲されているものである。そして、第1ひだ部3
aの下端縁部と第2ひだ部3bの下端縁部とを通る線L
が、碍子本体Cと同じく水平方向線Sに対して碍子中心
側が上がる40度の角度をなしている。図7に示すよう
に、碍子本体Eは、第1ひだ部3aが第2ひだ部3bよ
り長く形成され、第1ひだ部3aの下端縁部と第2ひだ
部3bの下端縁部とを通る線Lが、水平方向線Sに対し
て碍子中心側が上がる35度の角度をなすものである。
As shown in FIG. 6, in the insulator body D, compared to the insulator body C, the first pleated portion 3a is bent outward at the intermediate portion thereof. And the first fold part 3
A line L passing through the lower edge of a and the lower edge of the second pleat 3b
However, like the insulator body C, it forms an angle of 40 degrees with respect to the horizontal line S, with the center side of the insulator rising. As shown in FIG. 7, in the insulator body E, the first pleat part 3a is formed longer than the second pleat part 3b, and passes through the lower end edge of the first pleat part 3a and the lower end edge of the second pleat part 3b. The line L forms an angle of 35 degrees with respect to the horizontal line S, with the center side of the insulator rising.

【0013】図8に示すように、碍子本体Fは、第1ひ
だ部3aより第2ひだ部3bが長く形成され、第1ひだ
部3aの下端縁部と第2ひだ部3bの下端縁部とを通る
線Lが、水平方向線Sに対して碍子中心側が下がる37
度の角度をなすものである。以上のように構成された6
種類の碍子本体をそれぞれ6個或いは8個連結して懸垂
碍子連10を形成し、各懸垂碍子連10で発生する騒音
の音圧レベルを前述した試験方法により測定する。因み
に、碍子本体の連結数を6個にしても8個にしても騒音
の音圧レベルには大差がないことが確認されている。そ
して、図9に示す試験結果より明らかなように、第1ひ
だ部3aの下端縁部と第2ひだ部3bの下端縁部とを通
る線Lの、水平方向線Sに対する角度が大きなものほど
音圧レベルが低いことが確認される。つまり、第1ひだ
部3aの下端縁部と第2ひだ部3bの下端縁部とを通る
線Lが、水平方向線Sに対して少なくとも35度以上あ
れば、騒音をほぼ防止できる。尚、音圧レベルはほぼ9
5〜97dBAを境に騒音として認識するか否かが判断
される。
As shown in FIG. 8, in the insulator body F, the second pleat part 3b is formed longer than the first pleat part 3a, and the lower end edge of the first pleat part 3a and the lower end edge of the second pleat part 3b are formed. The line L that passes through is lowered on the insulator center side with respect to the horizontal line S37
It forms an angle of degrees. 6 configured as above
A suspended insulator chain 10 is formed by connecting six or eight different types of insulator bodies, and the sound pressure level of the noise generated in each suspended insulator chain 10 is measured using the test method described above. Incidentally, it has been confirmed that there is no significant difference in the sound pressure level of noise whether the number of connected insulator bodies is six or eight. As is clear from the test results shown in FIG. 9, the angle of the line L passing through the lower edge of the first pleat 3a and the lower edge of the second pleat 3b with respect to the horizontal line S is larger. It is confirmed that the sound pressure level is low. In other words, if the line L passing through the lower edge of the first pleat 3a and the lower edge of the second pleat 3b is at least 35 degrees or more with respect to the horizontal line S, noise can be substantially prevented. In addition, the sound pressure level is approximately 9
It is determined whether or not to recognize noise as a noise between 5 and 97 dBA.

【0014】上記の試験結果より、製造の容易さも考慮
して碍子本体1を図1に示すような形状とした。そして
、この図1に示す碍子本体1を複数連結して懸垂碍子連
10を形成すると、この碍子連10は強風を受けても騒
音をほとんど発生することがない。尚、この発明は前記
実施例に限定されるものではなく、例えば第1ひだ部3
aの下端縁部と第2ひだ部3bの下端縁部とを通る線L
の、水平方向線Sに対する角度θを更に大きくする、つ
まり第1ひだ部3aを更に長く形成したり或いは第2ひ
だ部3bを更に短く形成したり、第2ひだ部3bを形成
しなかったり、上記角度θが35度以上になるように第
2ひだ部3bを第1ひだ部3aより長く形成したりする
など、この発明の趣旨を逸脱しない範囲で各部の構成を
任意に変更して具体化することも可能である。
Based on the above test results, the insulator body 1 was shaped as shown in FIG. 1 in consideration of ease of manufacture. When a plurality of insulator bodies 1 shown in FIG. 1 are connected to form a suspended insulator chain 10, this insulator chain 10 hardly generates noise even when exposed to strong winds. Note that the present invention is not limited to the above-mentioned embodiment, and for example, the first fold portion 3
A line L passing through the lower edge of a and the lower edge of the second pleat 3b
The angle θ with respect to the horizontal line S is further increased, that is, the first pleat portion 3a is formed longer, the second pleat portion 3b is formed shorter, or the second pleat portion 3b is not formed. The configuration of each part may be arbitrarily changed without departing from the spirit of the invention, such as by forming the second pleat part 3b longer than the first pleat part 3a so that the angle θ is 35 degrees or more. It is also possible to do so.

【0015】[0015]

【発明の効果】以上詳述したように本発明によれば、風
による音の発生を防止することができるという優れた効
果を発揮する。
As described in detail above, the present invention exhibits the excellent effect of preventing the generation of noise caused by wind.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】本発明を具体化した騒音防止碍子の一実施例を
示す一部破断正面図である。
FIG. 1 is a partially cutaway front view showing an embodiment of a noise prevention insulator embodying the present invention.

【図2】風洞実験室の側面図である。FIG. 2 is a side view of the wind tunnel laboratory.

【図3】試験試料としての碍子本体を示す部分断面図で
ある。
FIG. 3 is a partial sectional view showing an insulator body as a test sample.

【図4】試験試料としての碍子本体を示す部分断面図で
ある。
FIG. 4 is a partial sectional view showing an insulator body as a test sample.

【図5】試験試料としての碍子本体を示す部分断面図で
ある。
FIG. 5 is a partial sectional view showing an insulator body as a test sample.

【図6】試験試料としての碍子本体を示す部分断面図で
ある。
FIG. 6 is a partial sectional view showing an insulator body as a test sample.

【図7】試験試料としての碍子本体を示す部分断面図で
ある。
FIG. 7 is a partial sectional view showing an insulator body as a test sample.

【図8】試験試料としての碍子本体を示す部分断面図で
ある。
FIG. 8 is a partial sectional view showing an insulator body as a test sample.

【図9】試験試料としての碍子本体の音圧レベルを示す
図である。
FIG. 9 is a diagram showing the sound pressure level of an insulator body as a test sample.

【符号の説明】[Explanation of symbols]

1  碍子本体、2  笠部、3  ひだ部、3a  
第1ひだ部、3b  第2ひだ部、L  第1ひだ部の
下端縁部と第2ひだ部の下端縁部とを通る線、S  水
平方向線。
1 insulator body, 2 cap, 3 pleat, 3a
First pleat, 3b Second pleat, L Line passing through the lower edge of the first pleat and the lower edge of the second pleat, S Horizontal line.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  碍子本体に笠部を設けるとともに、そ
の笠部の内側面に円環状に且つ同心状に複数のひだ部を
設けた碍子において、前記笠部の最外端に設けられた第
1ひだ部と、その第1ひだ部と隣会う第2ひだ部との間
には、第1ひだ部の先端縁部と第2ひだ部の先端縁部と
を通る線が、水平方向線に対して少なくとも35度以上
の角度になるような関係を設定したことを特徴とする騒
音防止碍子。
Claim 1. An insulator in which a cap is provided on the insulator body and a plurality of folds are provided in an annular and concentric manner on the inner surface of the cap, wherein a plurality of folds are provided at the outermost end of the cap. Between a first pleat and a second pleat adjacent to the first pleat, a line passing through the tip edge of the first pleat and the tip edge of the second pleat is a horizontal line. A noise prevention insulator characterized by having an angle of at least 35 degrees or more with respect to the noise prevention insulator.
JP6654491A 1991-03-29 1991-03-29 Noise prevention insulator Expired - Lifetime JPH06101261B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6654491A JPH06101261B2 (en) 1991-03-29 1991-03-29 Noise prevention insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6654491A JPH06101261B2 (en) 1991-03-29 1991-03-29 Noise prevention insulator

Publications (2)

Publication Number Publication Date
JPH04301323A true JPH04301323A (en) 1992-10-23
JPH06101261B2 JPH06101261B2 (en) 1994-12-12

Family

ID=13318951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6654491A Expired - Lifetime JPH06101261B2 (en) 1991-03-29 1991-03-29 Noise prevention insulator

Country Status (1)

Country Link
JP (1) JPH06101261B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020032661A (en) * 2000-10-25 2002-05-04 이종훈 Low aerodynamic noise rubber cap for insulator and method for connecting insulators each other using thereof
JP2011216252A (en) * 2010-03-31 2011-10-27 Ngk Insulators Ltd Wind noise prevention solid glass

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8601526B2 (en) 2008-06-13 2013-12-03 United Video Properties, Inc. Systems and methods for displaying media content and media guidance information

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020032661A (en) * 2000-10-25 2002-05-04 이종훈 Low aerodynamic noise rubber cap for insulator and method for connecting insulators each other using thereof
JP2011216252A (en) * 2010-03-31 2011-10-27 Ngk Insulators Ltd Wind noise prevention solid glass

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