JP3958494B2 - Lightning arrester for power transmission - Google Patents

Lightning arrester for power transmission Download PDF

Info

Publication number
JP3958494B2
JP3958494B2 JP2000077513A JP2000077513A JP3958494B2 JP 3958494 B2 JP3958494 B2 JP 3958494B2 JP 2000077513 A JP2000077513 A JP 2000077513A JP 2000077513 A JP2000077513 A JP 2000077513A JP 3958494 B2 JP3958494 B2 JP 3958494B2
Authority
JP
Japan
Prior art keywords
glass fiber
frp cylinder
frp
power transmission
lightning arrester
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.)
Expired - Lifetime
Application number
JP2000077513A
Other languages
Japanese (ja)
Other versions
JP2001266682A (en
Inventor
友泰 村瀬
俊幸 高木
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 JP2000077513A priority Critical patent/JP3958494B2/en
Publication of JP2001266682A publication Critical patent/JP2001266682A/en
Application granted granted Critical
Publication of JP3958494B2 publication Critical patent/JP3958494B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/32—Single insulators consisting of two or more dissimilar insulating bodies
    • H01B17/325—Single insulators consisting of two or more dissimilar insulating bodies comprising a fibre-reinforced insulating core member

Landscapes

  • Thermistors And Varistors (AREA)
  • Insulators (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a light-weight and inexpensive lightning arrester for power transmission utilizing a FRP trunk having a lightweight, high-strength and excellent explosion-protection characteristic. SOLUTION: The lightning arrester for electric transmission 1 is provided with a FRP trunk 3 having a pressure discharge port 2 for discharging interior gas, a sheath 6 comprised of a shank 4 provided on periphery of the FRP trunk 3 and a shade 5, and a zinc oxide element 7 disposed inside the FRP trunk 3. The pressure discharge port 2 is disposed along the winding direction of a glass fiber 12 of a glass fiber layer 11 comprising the FRP trunk 3.

Description

【０００１】
【発明の属する技術分野】
本発明は、ＦＲＰ筒と、ＦＲＰ筒の外周に設けた胴部と笠とからなる外被と、を備え、ＦＲＰ筒内に酸化亜鉛素子を配置するとともに、ＦＲＰ筒に内部のガスを放出するための放圧口を設けた送電用避雷装置に関するものである。
【０００２】
【従来の技術】
従来から、送電用避雷装置として、内部のガスを放出するための放圧口を有する強度保持のためのＦＲＰ筒と、ＦＲＰ筒の外周に設けた胴部と笠とからなる外被と、ＦＲＰ筒の内部に配置した酸化亜鉛素子とからなる、防爆特性を付与させた避雷装置が知られている。
【０００３】
これらの送電用避雷装置に使用されるＦＲＰ筒は、例えば樹脂を含浸させたガラス繊維束（ロービング）を円柱形状のボビンにらせん状に交差させて巻き付ける等の方法で作成されている。その一例として、特開平３−２９２８５号公報において、樹脂を含浸させたガラス繊維状巻き線を素子外表面に密着巻き付けし、未巻き線部が少なくとも１５％であるＦＲＰ筒を利用した複合避雷器が開示されている。また、これらの送電用避雷装置に使用されるＦＲＰ筒では、成形後に発生する内部ガスを放出するための放圧口を設けることも、一般的に行われている。
【０００４】
【発明が解決しようとする課題】
上述したような構成の放電用避雷装置の内部に許容以上の過大な雷電流が流れると、高温高圧の内部ガスが発生する。この内部ガスを放出するために放圧口が存在する。放圧口は、通常ＦＲＰ筒を製造した後にドリル等を使用した機械加工により作製される。そのため、ガラス繊維の多くは、その繊維が部分的に切断された状態になっている。このため、全てのガラス繊維がＦＲＰ筒の機械強度を得るために有効に機能していない問題があった。
【０００５】
また、上述した放圧口の弱点に加えて、避雷装置の故障時には高温高圧のガスがＦＲＰ筒のガラス繊維を熱および圧力により切断する問題もあった。この場合は、送電用避雷装置は機械的強度を失い、外被の胴部が離断する等大きな損害に結びつく可能性も考えられた。そのため、従来ＦＲＰ筒を設計して製造するためには、上述した構造上の強度低下や故障時の強度低下を補っても十分な強度を持つように設計製造せざるを得なかった。そのため、このことがＦＲＰ筒の重量増、コストアップにつながっていた。
【０００６】
本発明の目的は上述した課題を解消して、小型、軽量で防爆特性に優れた高強度のＦＲＰ筒を利用した軽量、安価な送電用避雷装置を提供しようとするものである。
【０００７】
【課題を解決するための手段】
本発明の送電用避雷装置は、内部のガスを放出するための放圧口を有するＦＲＰ筒と、ＦＲＰ筒の外周に設けた胴部と笠とからなる外被と、ＦＲＰ筒の内部に配置した酸化亜鉛素子と、からなる送電用避雷装置において、放圧口を、ＦＲＰ筒を構成するガラス繊維層におけるガラス繊維の巻き方向に沿って配置することを特徴とするものである。
【０００８】
本発明では、ＦＲＰ筒を構成するガラス繊維層におけるガラス繊維の巻き方向に沿って放圧口を配置すること、言い換えると、ＦＲＰ筒を構成するガラス繊維層におけるガラス繊維の切断が最も少なくなる位置に放圧口を設けることで、ＦＲＰ筒を構成するガラス繊維の切断を最小とでき、ＦＲＰ筒の引張強度を強くすることができる。その結果、従来の設計よりもＦＲＰ筒の厚さを薄くでき、それに伴い軽量にすることができる一方、防爆性能が従来と同様に優れ高強度なＦＲＰ筒を得ることができる。そのため、そのＦＲＰ筒を使用した送電用避雷装置は、軽量で安価に製造できる。
【０００９】
好ましい態様として、ＦＲＰ筒が、ＦＲＰ筒の中心軸に対する巻き角度が互いに異なる複数のガラス繊維層から構成され、各ガラス繊維層において、放圧口が、そのガラス繊維層のガラス繊維の巻き方向に沿っている。また、ＦＲＰ筒を、ガラス繊維の巻き角度が、０°に近い角度のガラス繊維層と、５５°よりも小さいある角度のガラス繊維層と、５５°よりも大きいある角度のガラス繊維層と、９０°に近い角度のガラス繊維層との４種のガラス繊維層から構成する。さらに、放圧口のＦＲＰ筒表面積に対する面積を１０％〜２５％とする。いずれの場合も本発明の上記効果を一層達成することができる。
【００１０】
【発明の実施の形態】
図１は本発明の送電用避雷装置の一例の構成を示す断面図である。図１に示す例において、本発明の送電用避雷装置１は、内部のガスを放出するための放圧口２を有するＦＲＰ（Fiber Reinforced Plastics ）筒３と、ＦＲＰ筒３の外周に設けた胴部４と笠５とからなる外被６と、ＦＲＰ筒３の内部に配置した酸化亜鉛素子７とから構成されている。
【００１１】
図１に示す送電用避雷装置１において、ＦＲＰ筒３の放圧口２は、図２（ａ）、（ｂ）にその一例の構成を示すように、ＦＲＰ筒３の外表面において複数の放圧口２が一定の規則に従って設けられている。本発明の特徴は、これらの放圧口２を、ＦＲＰ筒３を構成する、ＦＲＰ筒３の中心軸Ｏに対する巻き角度がθであるガラス繊維層１１のガラス繊維に沿った位置に設けた点である。このように、放圧口２を、ＦＲＰ筒３を構成するガラス繊維層１１のガラス繊維に沿った位置に設けることで、ＦＲＰ筒３を構成するガラス繊維層１１におけるガラス繊維の切断を最も少なくできる。なお、巻き角度θは、従来から知られているようにＦＲＰ筒３を樹脂を含浸したガラス繊維であるロービングをボビン表面にボビンの中心軸に対しある角度を持って巻回して作製する際のその角度のことである。
【００１２】
上述した放圧口２を、ＦＲＰ筒３を構成するガラス繊維層１１のガラス繊維の巻き方向に沿って配置することの効果を、図３（ａ）、（ｂ）および図４を参照して説明する。本例では、図３（ａ）にＦＲＰ筒３を正面から見た図を示すとともに図３（ｂ）にＦＲＰ筒３を裏面から見た図を示すように、巻き角度θのガラス繊維１２は、斜線を付した部分では切断されず、ＦＲＰ筒３の長手方向において一端３−１から他端３−２まで連続し、放圧口２の存在する何も付していない部分では切断される。
【００１３】
この場合、放圧口２を設けることで切断されるガラス繊維１２の数は最小となる。その結果、ガラス繊維層１１のガラス繊維１２の切断を最小にできるため、ＦＲＰ筒３の長手方向での引張強度を高くすることができる。なお、図４に、図３（ａ）、（ｂ）で示した例において、ガラス繊維１２がＦＲＰ筒３の長手方向における一端３−１から他端３−２まで連続する様子を示す。図４において、横方向には各回転毎の表面状体を連続して示し、上面がＦＲＰ筒３の一端３−１の位置となり、下面がＦＲＰ筒３の他端３−２の位置となる。図４から、放圧口２以外の部分でガラス繊維１２が連続する様子が良くわかる。
【００１４】
次に、ＦＲＰ筒３を、ＦＲＰ筒３の中心軸に対する巻き角度が互いに異なる複数のガラス繊維層１１から構成する場合について説明する。この場合も、各ガラス繊維層１１において、放圧口２が、そのガラス繊維層１１のガラス繊維１２の巻き方向に沿うよう構成する。図４と同様に放圧口２の位置を示した図５を例にとって採り得る巻き方向の一例を説明すると、本例では、放圧口２が、そのガラス繊維層１１のガラス繊維１２の巻き方向に沿う位置として、巻き角度が、θ１（０°）と、θ２と、θ３と、θ４（９０°）の場合が考えられる。
【００１５】
通常、ＦＲＰ筒３を形成する装置の都合上、θ１（０°）にガラス繊維１２を巻くことはできず、また、θ４（９０°）でも全体に連続してガラス繊維１２を巻くことができない。さらに、巻き角度５５°は、ＦＲＰ筒３の長手方向への引張強度とＦＲＰ筒３が膨張する方向の強度の保持にガラス繊維１２が及ぼす効果が両方向に中間となり、いずれかの強度が出るようにガラス繊維１２の巻き方向を決定する本発明の場合不都合である。そのため、複数のガラス繊維層１１からＦＲＰ筒３を構成する場合、巻き角度５５°よりも大きいある角度と、巻き角度５５°よりも小さいある角度のガラス繊維層１１を用いることが好ましい。以上のことから、ＦＲＰ筒３を、巻き角度が異なる複数のガラス繊維層１１から構成する場合、０°に近いθ１の層と、５５°より小さいθ２の層と、５５°より大きいθ３の層と、９０°に近いθ４の層との少なくとも４層で構成することが好ましい。また、具体的な一例として、θ１としては５°が、θ４としては８３°がそれぞれ好ましい例として例示できる。
【００１６】
また、ＦＲＰ筒３の表面における放圧口２の総面積については、特に限定するものではないが、放圧口２のＦＲＰ筒３の表面積に対する総面積を１０％〜２５％とすることが好ましい。これは、放圧口２のＦＲＰ筒３の表面積に対する総面積が１０％〜２５％であれば、故障電流が内部に流れＦＲＰ筒３の内部から放圧しても避雷装置全体が爆発飛散することがないためである。
【００１７】
図１に示す送電用避雷装置１を構成するＦＲＰ筒３以外の構成は、従来と同様の構成とすることができる。外被６を構成する胴部４と笠５はシリコーンゴム等からなり、インジェクション成形、圧縮成型、トランスファー成型等の方法で作製する。なお、従来防爆特性を考慮して放圧口２を笠５ではなく胴部４に対応する位置に配置する等の試みがあったが、本発明では、放圧口２と胴部４および笠５との関係は考慮せず、上述したように巻き角度が小さいガラス繊維層のガラス繊維の切断が最も小さくなる位置に設けている。また、酸化亜鉛素子７は電圧非直線性を示す素子として知られており、通常は絶縁体としての挙動を示すが過大な電圧が印加されると導通する特性を有する。図１に示す例では、ＦＲＰ筒３中に複数個の円柱形状の酸化亜鉛素子７を配置している。両端にはバネ８を設け、図示しない両端の把持金具との間に複数個の酸化亜鉛素子７をセットしている。
【００１８】
【発明の効果】
以上の説明から明らかなように、本発明によれば、ＦＲＰ筒を構成するガラス繊維層におけるガラス繊維の巻き方向に沿って放圧口を設けているため、ＦＲＰを構成するガラス繊維層におけるガラス繊維の切断を最小とでき、ＦＲＰ筒の引張強度を強くすることができる。その結果、従来の設計よりもＦＲＰ筒の厚さを小さくでき、それに伴い軽量にすることができる一方、防爆性能が従来と同様に優れ高強度なＦＲＰ筒を得ることができる。そのため、そのＦＲＰ筒を使用した送電用避雷装置は、軽量で安価に製造できるという特性を有する。
【図面の簡単な説明】
【図１】本発明の送電用避雷装置の一例の構成を示す断面図である。
【図２】（ａ）、（ｂ）はそれぞれＦＲＰ筒の一例の構成を示す図である。
【図３】（ａ）、（ｂ）はそれぞれＦＲＰ筒におけるガラス繊維と放圧口との関係を示す図である。
【図４】図３（ａ）、（ｂ）とは別の観点でＦＲＰ筒におけるガラス繊維と放圧口との関係を示す図である。
【図５】複数層からなるＦＲＰ筒における各層のガラス繊維巻き角度を説明するための図である。
【符号の説明】
１ 送電用避雷装置、２ 放圧口、３ ＦＲＰ筒、４ 胴部、５ 笠、６ 外被、７ 酸化亜鉛素子、１１ ガラス繊維層、１２ ガラス繊維[0001]
BACKGROUND OF THE INVENTION
The present invention includes an FRP cylinder, and a jacket made of a trunk and a cap provided on the outer periphery of the FRP cylinder, and disposes a zinc oxide element in the FRP cylinder and releases internal gas to the FRP cylinder. The present invention relates to a lightning arrester for power transmission provided with a pressure relief port.
[0002]
[Prior art]
Conventionally, as a lightning arrester for power transmission, an FRP cylinder for maintaining strength having a pressure release port for releasing an internal gas, a jacket made up of a trunk and a cap provided on the outer periphery of the FRP cylinder, and an FRP There is known a lightning arrester provided with an explosion-proof property, which is composed of a zinc oxide element arranged inside a cylinder.
[0003]
The FRP cylinder used in these lightning arresters for power transmission is created by a method of winding a glass fiber bundle (roving) impregnated with a resin so as to cross a cylindrical bobbin spirally. As an example, in JP-A-3-29285, a composite lightning arrester using an FRP cylinder in which a glass fiber winding impregnated with resin is tightly wound around an outer surface of an element and an unwinding portion is at least 15%. It is disclosed. Moreover, in the FRP cylinder used for these lightning arresters for power transmission, it is also generally performed to provide a pressure relief port for releasing internal gas generated after molding.
[0004]
[Problems to be solved by the invention]
When an excessive lightning current exceeding an allowable value flows inside the lightning arrester having the above-described configuration, high-temperature and high-pressure internal gas is generated. In order to release the internal gas, there is a pressure release port. The pressure relief port is usually made by machining using a drill or the like after manufacturing the FRP cylinder. Therefore, most of the glass fibers are in a state where the fibers are partially cut. For this reason, there was a problem that all the glass fibers did not function effectively in order to obtain the mechanical strength of the FRP cylinder.
[0005]
In addition to the above-described weakness of the discharge port, there is also a problem that the high temperature and high pressure gas cuts the glass fiber of the FRP cylinder by heat and pressure when the lightning arrester fails. In this case, it was considered that the lightning arrester for power transmission lost mechanical strength and could lead to serious damage such as the outer body of the jacket being cut off. Therefore, in order to design and manufacture a conventional FRP cylinder, it has been necessary to design and manufacture the FRP cylinder so that it has sufficient strength even if the above-described structural strength reduction or strength reduction at the time of failure is compensated. Therefore, this has led to an increase in the weight and cost of the FRP cylinder.
[0006]
An object of the present invention is to solve the above-described problems and to provide a light-weight and inexpensive lightning arrester for power transmission using a high-strength FRP cylinder that is small, lightweight, and excellent in explosion-proof characteristics.
[0007]
[Means for Solving the Problems]
A lightning arrester for power transmission according to the present invention is arranged inside an FRP cylinder having an FRP cylinder having a pressure release port for releasing an internal gas, an outer cover made up of a body portion and a shade provided on the outer periphery of the FRP cylinder, and In the lightning arrester for power transmission composed of the zinc oxide element, the pressure relief opening is arranged along the winding direction of the glass fiber in the glass fiber layer constituting the FRP cylinder.
[0008]
In the present invention, the pressure release port is disposed along the winding direction of the glass fiber in the glass fiber layer constituting the FRP cylinder, in other words, the position where the glass fiber cut in the glass fiber layer constituting the FRP cylinder is minimized. By providing the pressure relief opening in the glass, cutting of the glass fiber constituting the FRP cylinder can be minimized, and the tensile strength of the FRP cylinder can be increased. As a result, the thickness of the FRP cylinder can be made thinner than that of the conventional design, and the weight can be reduced accordingly. On the other hand, an FRP cylinder having excellent explosion-proof performance as in the conventional case and high strength can be obtained. Therefore, a lightning arrester for power transmission using the FRP cylinder is lightweight and can be manufactured at low cost.
[0009]
As a preferred embodiment, the FRP cylinder is composed of a plurality of glass fiber layers whose winding angles with respect to the central axis of the FRP cylinder are different from each other, and in each glass fiber layer, the pressure release port is in the glass fiber winding direction of the glass fiber layer. Along. Further, the FRP tube is formed by a glass fiber layer having a glass fiber winding angle close to 0 °, a glass fiber layer having an angle smaller than 55 °, a glass fiber layer having an angle larger than 55 °, It consists of four types of glass fiber layers with a glass fiber layer at an angle close to 90 °. Furthermore, the area with respect to the FRP cylinder surface area of the pressure release port is set to 10% to 25%. In either case, the above effect of the present invention can be further achieved.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a cross-sectional view showing a configuration of an example of a lightning arrester for power transmission according to the present invention. In the example shown in FIG. 1, a lightning arrester 1 for power transmission according to the present invention includes an FRP (Fiber Reinforced Plastics) cylinder 3 having a pressure release port 2 for releasing an internal gas, and a body provided on the outer periphery of the FRP cylinder 3. The outer cover 6 includes a portion 4 and a shade 5 and a zinc oxide element 7 disposed inside the FRP cylinder 3.
[0011]
In the lightning arrester 1 for power transmission shown in FIG. 1, the pressure release port 2 of the FRP cylinder 3 has a plurality of discharge holes on the outer surface of the FRP cylinder 3 as shown in FIGS. 2 (a) and 2 (b). The pressure port 2 is provided according to a certain rule. A feature of the present invention is that these pressure release ports 2 are provided at positions along the glass fibers of the glass fiber layer 11 constituting the FRP cylinder 3 and having a winding angle θ with respect to the central axis O of the FRP cylinder 3. It is. In this way, by providing the pressure release port 2 at a position along the glass fiber of the glass fiber layer 11 constituting the FRP cylinder 3, the glass fiber in the glass fiber layer 11 constituting the FRP cylinder 3 is least cut. it can. Note that the winding angle θ is a value obtained when the FRP cylinder 3 is made by winding a roving, which is a glass fiber impregnated with a resin, around the bobbin surface with a certain angle with respect to the central axis of the bobbin, as is conventionally known. That angle.
[0012]
The effect of disposing the pressure release port 2 described above along the glass fiber winding direction of the glass fiber layer 11 constituting the FRP cylinder 3 will be described with reference to FIGS. explain. In this example, as shown in FIG. 3 (a) when the FRP tube 3 is viewed from the front, and as shown in FIG. 3 (b) when the FRP tube 3 is viewed from the back, the glass fiber 12 with the winding angle θ is In the longitudinal direction of the FRP cylinder 3, it is not cut at the hatched part, and is continuous from one end 3-1 to the other end 3-2, and is cut at the part where nothing is attached where the pressure release port 2 exists. .
[0013]
In this case, the number of the glass fibers 12 cut by providing the pressure release port 2 is minimized. As a result, since the cutting of the glass fiber 12 of the glass fiber layer 11 can be minimized, the tensile strength in the longitudinal direction of the FRP cylinder 3 can be increased. 4 shows a state in which the glass fiber 12 continues from one end 3-1 to the other end 3-2 in the longitudinal direction of the FRP cylinder 3 in the example shown in FIGS. 3 (a) and 3 (b). In FIG. 4, the surface-like body for each rotation is shown continuously in the horizontal direction, the upper surface is the position of one end 3-1 of the FRP cylinder 3, and the lower surface is the position of the other end 3-2 of the FRP cylinder 3. . From FIG. 4, it can be clearly seen that the glass fiber 12 is continuous in a portion other than the pressure release port 2.
[0014]
Next, the case where the FRP cylinder 3 is comprised from the several glass fiber layer 11 from which the winding angle with respect to the central axis of the FRP cylinder 3 mutually differs is demonstrated. Also in this case, in each glass fiber layer 11, the pressure release port 2 is configured along the winding direction of the glass fiber 12 of the glass fiber layer 11. An example of a winding direction that can be taken with reference to FIG. 5 showing the position of the pressure release port 2 as in FIG. 4 will be described. In this example, the pressure release port 2 winds the glass fiber 12 of the glass fiber layer 11. As the position along the direction, there are cases where the winding angles are θ1 (0 °), θ2, θ3, and θ4 (90 °).
[0015]
Usually, the glass fiber 12 cannot be wound around θ1 (0 °) for the convenience of the apparatus for forming the FRP cylinder 3, and the glass fiber 12 cannot be continuously wound even at θ4 (90 °). . Further, when the winding angle is 55 °, the effect of the glass fiber 12 on maintaining the tensile strength in the longitudinal direction of the FRP cylinder 3 and the strength in the direction in which the FRP cylinder 3 expands is intermediate in both directions, so that either strength is obtained. In the case of the present invention, which determines the winding direction of the glass fiber 12, it is inconvenient. Therefore, when the FRP cylinder 3 is constituted by a plurality of glass fiber layers 11, it is preferable to use a glass fiber layer 11 having an angle larger than the winding angle 55 ° and an angle smaller than the winding angle 55 °. From the above, when the FRP cylinder 3 is composed of a plurality of glass fiber layers 11 having different winding angles, a θ1 layer close to 0 °, a θ2 layer smaller than 55 °, and a θ3 layer larger than 55 °. And at least four layers of θ4 layers close to 90 °. Further, as a specific example, 5 ° can be exemplified as θ1, and 83 ° can be exemplified as θ4.
[0016]
Further, the total area of the pressure release port 2 on the surface of the FRP cylinder 3 is not particularly limited, but the total area of the pressure release port 2 with respect to the surface area of the FRP cylinder 3 is preferably 10% to 25%. . This is because if the total area of the pressure release port 2 with respect to the surface area of the FRP cylinder 3 is 10% to 25%, even if a fault current flows inside and the pressure is released from inside the FRP cylinder 3, the entire lightning arrester will explode. Because there is no.
[0017]
The configuration other than the FRP cylinder 3 constituting the lightning arrester 1 for power transmission shown in FIG. 1 can be the same as the conventional configuration. The body 4 and the shade 5 constituting the outer cover 6 are made of silicone rubber or the like, and are manufactured by a method such as injection molding, compression molding, or transfer molding. Conventionally, there has been an attempt to arrange the pressure release port 2 at a position corresponding to the trunk 4 instead of the shade 5 in consideration of explosion-proof characteristics. However, in the present invention, the pressure relief port 2, the trunk 4, and the shade are arranged. The glass fiber layer of the glass fiber layer having a small winding angle is provided at the position where the cutting of the glass fiber becomes the smallest as described above. In addition, the zinc oxide element 7 is known as an element exhibiting voltage non-linearity, and normally exhibits a behavior as an insulator, but has a characteristic of conducting when an excessive voltage is applied. In the example shown in FIG. 1, a plurality of columnar zinc oxide elements 7 are arranged in the FRP cylinder 3. Spring 8 is provided at both ends, and a plurality of zinc oxide elements 7 are set between gripping metal fittings at both ends (not shown).
[0018]
【The invention's effect】
As is clear from the above description, according to the present invention, since the pressure release port is provided along the winding direction of the glass fiber in the glass fiber layer constituting the FRP cylinder, the glass in the glass fiber layer constituting the FRP is provided. Fiber cutting can be minimized, and the tensile strength of the FRP cylinder can be increased. As a result, the thickness of the FRP cylinder can be made smaller than that of the conventional design, and the weight can be reduced accordingly. On the other hand, an FRP cylinder having excellent explosion-proof performance as in the conventional case and high strength can be obtained. Therefore, a lightning arrester for power transmission using the FRP cylinder has a characteristic that it is lightweight and can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of an example of a lightning arrester for power transmission according to the present invention.
FIGS. 2A and 2B are diagrams showing an exemplary configuration of an FRP cylinder. FIG.
FIGS. 3A and 3B are views showing the relationship between glass fibers and pressure release ports in an FRP cylinder, respectively.
FIG. 4 is a diagram showing a relationship between glass fibers and a pressure release port in an FRP cylinder from a viewpoint different from FIGS. 3 (a) and 3 (b).
FIG. 5 is a diagram for explaining the glass fiber winding angle of each layer in a multi-layer FRP cylinder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lightning arrester for power transmission, 2 Release port, 3 FRP pipe | tube, 4 trunk | drum, 5 shades, 6 jacket, 7 Zinc oxide element, 11 Glass fiber layer, 12 Glass fiber

Claims (4)

内部のガスを放出するための放圧口を有するＦＲＰ筒と、ＦＲＰ筒の外周に設けた胴部と笠とからなる外被と、ＦＲＰ筒の内部に配置した酸化亜鉛素子と、からなる送電用避雷装置において、放圧口を、ＦＲＰ筒を構成するガラス繊維層におけるガラス繊維の巻き方向に沿って配置することを特徴とする送電用避雷装置。A power transmission comprising an FRP cylinder having a pressure release port for releasing internal gas, a jacket made up of a body and a cap provided on the outer periphery of the FRP cylinder, and a zinc oxide element arranged inside the FRP cylinder A lightning arrester for power transmission, wherein the pressure relief port is disposed along the winding direction of the glass fiber in the glass fiber layer constituting the FRP cylinder. ＦＲＰ筒が、ＦＲＰ筒の中心軸に対する巻き角度が互いに異なる複数のガラス繊維層から構成され、各ガラス繊維層において、放圧口が、そのガラス繊維層のガラス繊維の巻き方向に沿っている請求項１記載の送電用避雷装置。The FRP cylinder is composed of a plurality of glass fiber layers whose winding angles with respect to the central axis of the FRP cylinder are different from each other, and in each glass fiber layer, the pressure release port is along the winding direction of the glass fiber of the glass fiber layer. Item 1. A lightning arrester for power transmission according to Item 1. ＦＲＰ筒を、ガラス繊維の巻き角度が、０°に近い角度のガラス繊維層と、５５°よりも小さいある角度のガラス繊維層と、５５°よりも大きいある角度のガラス繊維層と、９０°に近い角度のガラス繊維層との４種のガラス繊維層から構成する請求項２記載の送電用避雷装置。The FRP tube is formed by using a glass fiber layer having a glass fiber winding angle close to 0 °, a glass fiber layer having an angle smaller than 55 °, a glass fiber layer having an angle larger than 55 °, and 90 °. The lightning arrester for power transmission according to claim 2, comprising four types of glass fiber layers with a glass fiber layer having an angle close to. 放圧口のＦＲＰ筒表面積に対する面積を１０％〜２５％とする請求項１〜３のいずれか１項に記載の送電用避雷装置。The lightning arrester for power transmission according to any one of claims 1 to 3, wherein an area of the pressure release port with respect to the surface area of the FRP cylinder is 10% to 25%.
JP2000077513A 2000-03-21 2000-03-21 Lightning arrester for power transmission Expired - Lifetime JP3958494B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000077513A JP3958494B2 (en) 2000-03-21 2000-03-21 Lightning arrester for power transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000077513A JP3958494B2 (en) 2000-03-21 2000-03-21 Lightning arrester for power transmission

Publications (2)

Publication Number Publication Date
JP2001266682A JP2001266682A (en) 2001-09-28
JP3958494B2 true JP3958494B2 (en) 2007-08-15

Family

ID=18595069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000077513A Expired - Lifetime JP3958494B2 (en) 2000-03-21 2000-03-21 Lightning arrester for power transmission

Country Status (1)

Country Link
JP (1) JP3958494B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101863273B1 (en) * 2017-12-11 2018-05-31 주식회사 이피이 Arrester with assembly type, and manufacturing method for the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011026519A1 (en) * 2009-09-03 2011-03-10 Abb Research Ltd Hollow electric insulator and manufacturing thereof
CN104319038A (en) * 2014-10-30 2015-01-28 成都峰达科技有限公司 Lightning arrester sheath capable of reducing occupied space
CN105006318A (en) * 2015-08-28 2015-10-28 大连北方避雷器有限公司 10kV and below gapless metal oxide arrester and manufacturing method for same
CN109752614B (en) * 2019-01-10 2023-08-29 西安西电避雷器有限责任公司 Lightning arrester parameter measurement method and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101863273B1 (en) * 2017-12-11 2018-05-31 주식회사 이피이 Arrester with assembly type, and manufacturing method for the same

Also Published As

Publication number Publication date
JP2001266682A (en) 2001-09-28

Similar Documents

Publication Publication Date Title
CN103093887B (en) Cross-shaped framework and cables with cross-shaped framework adopted
JP3958494B2 (en) Lightning arrester for power transmission
SE516123C2 (en) Valve diverter, method of making such and use
KR101148684B1 (en) Super-conducting cable
US20150160415A1 (en) Flexible, Low Profile Kink Resistant Fiber Optic Splice Tension Sleeve
JP2010225502A (en) Polymer lightening arrestor
CN105374418A (en) Cable with frame
CN200986607Y (en) Mutual locking special-shaped lines optical fiber composite overhead ground wire
CN105070368A (en) Three-groove frame and cable using the frame
CN211603644U (en) Communication optical cable and photoelectric composite cable for 5G network
US20140338969A1 (en) Optical-electrical composite cable
US20060279895A1 (en) Lightning arrestor
CN113866926A (en) All-dielectric pipeline direct-buried optical cable
JP2008033099A (en) Optical fiber coaxial cable
KR20120081849A (en) Optic electrical complex cable mounting power supply cable unit
JP4089262B2 (en) Lightning arrestor
KR100772822B1 (en) Combination twiste structure of the super conduction cable
US8059379B2 (en) Lightning arrestor
WO2014030703A1 (en) Wire harness
BR102019026204A2 (en) COMPOSITE PART, ASSEMBLY, AND, METHODS FOR ASSEMBLING A COMPOSITE AND ASSEMBLY PART
JP2004012611A (en) Non-metal optical fiber cable
JP3299400B2 (en) Stack of lightning arrester in lightning arrester
CN212411611U (en) Low-temperature cable
JP2800854B2 (en) Method for manufacturing fiber-reinforced plastic insulation cylinders such as lightning arresters
CN209981157U (en) Composite tube for fuse

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20061228

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070508

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070510

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 3958494

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100518

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110518

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120518

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120518

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130518

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130518

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140518

Year of fee payment: 7

EXPY Cancellation because of completion of term