JP2580939Y2 - Bus conductor support device - Google Patents
Bus conductor support deviceInfo
- Publication number
- JP2580939Y2 JP2580939Y2 JP2470692U JP2470692U JP2580939Y2 JP 2580939 Y2 JP2580939 Y2 JP 2580939Y2 JP 2470692 U JP2470692 U JP 2470692U JP 2470692 U JP2470692 U JP 2470692U JP 2580939 Y2 JP2580939 Y2 JP 2580939Y2
- Authority
- JP
- Japan
- Prior art keywords
- special bolt
- bus conductor
- support insulator
- support
- insulator
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/066—Devices for maintaining distance between conductor and enclosure
Landscapes
- Installation Of Bus-Bars (AREA)
Description
【0001】[0001]
【産業上の利用分野】この考案は、発電所等において発
電機と主変圧器等との間を接続する相分離母線の母線導
体支持装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus conductor supporting device for a phase-separated bus connecting a generator and a main transformer in a power plant or the like.
【0002】[0002]
【従来の技術】例えば実開昭55ー115224号公報に記載さ
れた従来の母線導体支持装置の構成を図6及び図7を用
いて説明する。図6及び図7において、挾持金具19は円
筒状の母線導体14の内径と実質的に等しい外径を有する
係合部27および係合部27に直交するおねじ部25を有す
る。挾持金具19は、そのおねじ部25が支持碍子18に埋め
込まれた支持金具17のめねじ部24と螺合することによ
り、あらかじめ支持碍子18の先端部分に取り付けられて
いる。一方、母線導体14は支持碍子18により絶縁支持さ
れる箇所に軸方向に長い長穴26が設けられている。長穴
26の形状は、挾持金具19の円弧状の係合部27が母線導体
14の軸方向から母線導体14の内側に貫通挿入できる大き
さである。一般に、母線導体14の長さは約10mあり、約
4個の支持碍子18によって支持される。組み立てに当っ
ては、あらかじめ母線導体14を所定の高さにジヤッキア
ップしておき、挾持金具19の係合部27の長手方向を母線
導体14の軸の方向に向けておいて、長穴26を通して母線
導体14の内部に貫通挿入した後、挾持金具19の係合部27
の長手方向が母線導体14の軸に直交する方向を向くよう
に支持碍子18を約90度回転させることにより、円弧状の
挾持金具19が母線導体14の内周面に係合し、母線導体14
が挾持金具19と支持碍子18との間に強く保持される。そ
の後、ジヤッキを下ろし、支持碍子18を支持台21に固定
することにより、母線導体14は絶縁支持される。2. Description of the Related Art The configuration of a conventional bus conductor supporting device described in, for example, Japanese Utility Model Publication No. 55-115224 will be described with reference to FIGS. 6 and 7, the holding member 19 has an engaging portion 27 having an outer diameter substantially equal to the inner diameter of the cylindrical busbar conductor 14, and a male thread portion 25 orthogonal to the engaging portion 27. The holding metal member 19 is attached to the distal end portion of the supporting insulator 18 in advance by screwing the male screw portion 25 into the female screw portion 24 of the supporting metal member 17 embedded in the supporting insulator 18. On the other hand, the bus bar 14 is provided with an elongated hole 26 extending in the axial direction at a place where the bus conductor 14 is insulated and supported by the supporting insulator 18. Long hole
The shape of 26 is such that the arcuate engaging portion 27 of the holding bracket 19 is a bus conductor.
The size is such that it can be inserted through the inside of the bus conductor 14 from the axial direction of 14. Generally, the length of the bus conductor 14 is about 10 m and is supported by about four support insulators 18. In assembling, the bus conductor 14 is previously jacked up to a predetermined height, the longitudinal direction of the engaging portion 27 of the clamping metal 19 is oriented in the direction of the axis of the bus conductor 14, and the elongated hole 26 is inserted. After being inserted through the inside of the bus bar conductor 14, the engaging portion 27 of the
By rotating the supporting insulator 18 by about 90 degrees so that the longitudinal direction of the bushing is oriented in a direction perpendicular to the axis of the busbar conductor 14, the arc-shaped holding bracket 19 is engaged with the inner peripheral surface of the busbar conductor 14, and 14
Is strongly held between the clamp 19 and the support insulator 18. Then, by lowering the jack and fixing the support insulator 18 to the support base 21, the bus conductor 14 is insulated and supported.
【0003】[0003]
【考案が解決しようとする課題】従来の母線導体支持装
置は以上の様に構成されているため、挾持金具19が母線
導体14の内周面と正しく設計通りの関係で係合している
かどうかを外部から確認することが困難であり、また経
年変化により係合が弛んだ場合にその弛みを外部から発
見することは事実上不可能であった。また、支持碍子18
を回転させて挾持金具19と母線導体14とを係合させてい
るが、支持碍子18は一般に磁器や樹脂等で形成されてい
るためこわれやすく、十分な締付トルクを加えることは
困難であった。さらに、損傷等により支持碍子18を取替
える必要が生じた場合において、前記組み立て手順とは
逆の手順を行なう必要があり、そのため、1つの支持碍
子を交換するために一旦母線導体14を支持するすべての
支持碍子18を支持台21から取外し、母線導体14をジャッ
キアップしなければならないという問題点を有してい
た。Since the conventional bus conductor supporting device is configured as described above, it is necessary to check whether the clamping metal 19 is correctly engaged with the inner peripheral surface of the bus conductor 14 in the designed relationship. Is difficult to confirm from the outside, and when the engagement is loosened due to aging, it is practically impossible to detect the slack from the outside. In addition, support insulator 18
Is rotated to engage the holding member 19 with the busbar conductor 14.However, since the support insulator 18 is generally formed of porcelain, resin, or the like, it is easily broken and it is difficult to apply a sufficient tightening torque. Was. Further, when it is necessary to replace the support insulator 18 due to damage or the like, it is necessary to perform a procedure reverse to the above-described assembly procedure. However, there is a problem that the support insulator 18 must be removed from the support base 21 and the bus conductor 14 must be jacked up.
【0004】この考案は以上のような問題点を解決する
ためになされたものであり、母線導体の支持部の取り付
け状態や弛み等が外部から容易に観察でき、支持碍子に
大きな締付トルクがかからず、また1つの支持碍子を単
独で取外し可能な母線導体支持装置を得ることを目的と
している。The present invention has been made to solve the above-mentioned problems, and the state of attachment or looseness of the supporting portion of the bus conductor can be easily observed from the outside, and a large tightening torque is applied to the supporting insulator. It is an object of the present invention to provide a bus conductor supporting device which can be detached independently of one supporting insulator.
【0005】[0005]
【課題を解決するための手段】この考案に係る母線導体
支持装置は、接地された実質円筒状の外被と、前記外被
の内側において前記外被の軸を含む鉛直面上に同一直線
上の所定の位置に配置され、その上部に第1の取り付け
面及びめねじ部を有する複数の支持碍子と、前記複数の
支持碍子と対向するべき部分にそれぞれ設けられた複数
の開口部と、前記各開口部に部分的に設けられ前記支持
碍子の第1の取り付け面に対向する第2の取り付け面及
び貫通穴を有する取り付け座とを有する円筒状の母線導
体と、前記母線導体の取り付け座の厚さよりも所定寸法
だけ長い胴部と、前記胴部の両端にそれぞれもうけられ
た前記支持碍子のめねじ部と螺合するための第1の長さ
を有する第1のおねじ部及び少なくとも2つのナツトと
直列に螺合するための第2の長さを有する第2のおねじ
部と、前記胴部の外周部に設けられスパナ等の回螺器と
係合するための係合平面部とを有する特殊ボルトと、前
記特殊ボルトの第2のおねじ部が貫通する穴を有する押
え板と、前記特殊ボルトの第2のおねじ部と螺合し、前
記押え板を前記特殊ボルトの第2のおねじ側端面に固定
するナツトと、を具備している。According to the present invention, a bus conductor supporting device according to the present invention includes a grounded substantially cylindrical jacket, and a coaxial line on a vertical plane including the axis of the jacket inside the jacket. A plurality of support insulators disposed at a predetermined position and having a first mounting surface and a female thread portion thereon, a plurality of openings respectively provided in portions to be opposed to the plurality of support insulators, A cylindrical bus conductor having a second mounting surface partially provided in each opening and a second mounting surface facing the first mounting surface of the support insulator and a mounting seat having a through hole; and a mounting seat of the bus conductor. A body portion longer by a predetermined dimension than the thickness, a first male thread portion having a first length for screwing with a female thread portion of the support insulator provided at each end of the body portion, and at least two threads; Screwed in series with two nuts A special bolt having a second male thread portion having a second length, and an engaging flat portion provided on an outer peripheral portion of the body portion for engaging with a screwdriver such as a spanner; A holding plate having a hole through which a second male thread portion of the bolt penetrates is screwed with a second male thread portion of the special bolt, and the holding plate is fixed to a second male thread side end surface of the special bolt. And a nut.
【0006】[0006]
【作用】母線導体の取り付け座は開口部に対して部分的
に設けられているため、開口部の他の部分から作業用の
スパナ等の回螺器を母線導体内部に挿入し作業すると共
に、母線導体の外部からボルト・ナツトの弛み等の取り
付け状態を確認する。母線導体はその取り付け座を特殊
ボルト、押え板、ナツト及び支持碍子に埋め込まれため
ねじ部を介して支持碍子に固定されるため、支持碍子に
は締付トルクは加わらない。破損等により支持碍子を交
換する場合、交換されるべき支持碍子の近傍の母線導体
の部分を支持碍子の高さにジャッキアップし、保持した
状態で、一旦ナツト及び押え板を取外す。次に、特殊ボ
ルトの第2のおねじ部にナツトを2個直列に螺合させ、
内側のナツトをスパナ等の回螺器によって回動させるこ
とにより、その戻しトルクが特殊ボルトに加えられ、特
殊ボルトと支持碍子のめねじ部との螺合が弛められる。
さらに、ナツト又は特殊ボルトの係合部に回螺器により
戻しトルクを加えることにより、特殊ボルトと支持碍子
のめねじ部との螺合を解除し、特殊ボルトを取り付け座
の貫通穴から抜取る。同様にして、交換されるべき支持
碍子と母線導体とを固定するために用いられていたすべ
ての特殊ボルトを抜取る。さらに、外被と支持碍子とを
固定していたボルト等を取外し、支持碍子を水平方向に
スライドさせ、母線導体から離す。そして、健全品の支
持碍子を上記手順とは逆の手順で装着し、母線導体と固
定する。Since the mounting seat for the bus conductor is provided partially to the opening, a screwdriver such as a working spanner is inserted into the bus conductor from another portion of the opening, and the work is performed. Check the bolts and nuts from the outside of the busbar for looseness and other mounting conditions. Since the busbar conductor has its mounting seat embedded in a special bolt, a holding plate, a nut, and a support insulator, and is fixed to the support insulator via a screw portion, no tightening torque is applied to the support insulator. When replacing the support insulator due to breakage or the like, the portion of the bus conductor near the support insulator to be replaced is jacked up to the height of the support insulator, and the nut and the holding plate are temporarily removed while being held. Next, two nuts are screwed in series with the second external thread of the special bolt,
By rotating the inner nut with a screw device such as a spanner, the return torque is applied to the special bolt, and the screwing between the special bolt and the female thread portion of the support insulator is loosened.
Further, by applying a return torque to the engaging portion of the nut or the special bolt with a turning screw, the screwing of the special bolt and the female thread portion of the support insulator is released, and the special bolt is removed from the through hole of the mounting seat. . Similarly, all the special bolts used for fixing the supporting insulator to be replaced and the bus conductor are removed. Further, the bolts and the like that fixed the outer cover and the supporting insulator are removed, and the supporting insulator is slid in the horizontal direction to separate from the bus conductor. Then, a support insulator of a sound product is mounted in a procedure reverse to the above procedure, and is fixed to the bus conductor.
【0007】[0007]
【実施例】この考案に係る母線導体支持装置の1実施例
を図1から図5までを用いて説明する。図1はこの実施
例に係る母線導体支持装置の構造を示す正面断面図、図
2は図1の側部断面図、図3は図1におけるA部の詳細
を示す部分拡大断面図、図4(a)及び(b)は特殊ボルト8
の詳細を示す側面図及び正面図、図5は支持碍子4の交
換の場合におけるA部の詳細を示す部分拡大断面図であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a bus conductor supporting device according to the present invention will be described with reference to FIGS. FIG. 1 is a front sectional view showing the structure of a bus conductor supporting device according to this embodiment, FIG. 2 is a side sectional view of FIG. 1, FIG. 3 is a partially enlarged sectional view showing details of a portion A in FIG. (a) and (b) are special bolts 8
FIG. 5 is a partially enlarged cross-sectional view showing details of a portion A in the case of replacing the support insulator 4.
【0008】図1及び図2において、接地された円筒状
の外被1は支持台3に溶接固定され、また支持碍子4は
外被1の外側からボルト5により支持台3に固定されて
いる。母線導体2は円筒状であり、外被1の内部におい
てその軸が外被1の軸と実質的に同じになるように支持
碍子4により絶縁支持されている。一般に、母線導体2
は長さが約10mであり、1つの母線導体2をその軸方向
に2〜4個の支持碍子4で支持している。母線導体2に
は支持碍子4と対向する部分にそれぞれ例えば矩形状の
投影形状を有する開口部6が設けられている。開口部6
の母線導体2の軸に直交する両端面6aには板状の取り付
け座7が部分的に溶接されている。支持碍子4の上部の
第1の取り付け面4bがそれに対向する取り付け座7の第
2の取り付け面7bを支持する。1個の支持碍子4ごとに
母線導体2の軸に直交する内面に2個の特殊ボルト8が
母線導体2の軸に対して対称の位置に配置されている。1 and 2, a grounded cylindrical jacket 1 is fixed to a support 3 by welding, and a support insulator 4 is fixed to the support 3 by bolts 5 from outside the cover 1. . The bus conductor 2 has a cylindrical shape, and is insulated and supported by the support insulator 4 so that its axis is substantially the same as the axis of the jacket 1 inside the jacket 1. Generally, bus conductor 2
Is about 10 m in length, and one bus conductor 2 is supported by two to four support insulators 4 in the axial direction. The busbar conductor 2 is provided with an opening 6 having, for example, a rectangular projection shape at a portion facing the support insulator 4. Opening 6
A plate-like mounting seat 7 is partially welded to both end surfaces 6a orthogonal to the axis of the bus conductor 2 of FIG. The first mounting surface 4b on the upper part of the support insulator 4 supports the second mounting surface 7b of the mounting seat 7 facing the first mounting surface 4b. Two special bolts 8 are arranged on the inner surface orthogonal to the axis of the bus conductor 2 at positions symmetrical to the axis of the bus conductor 2 for each support insulator 4.
【0009】次に、図1のA部の詳細を図3に示す。図
3は、母線導体2の軸に直交する面での部分拡大断面図
である。図3において、取り付け座7は所定の厚さを有
する板状であり、貫通穴7aを有する。特殊ボルト8は取
り付け座7の貫通穴7aに貫通挿入され、また、その第1
のおねじ部8aが支持碍子4に埋め込まれた金属製の埋金
4aのめねじ部4cに螺合する。押え板9は貫通穴9aを有
し、特殊ボルト8の第2のおねじ部8bが貫通穴9aに挿入
される。ナツト10を特殊ボルト8の第2のおねじ部8bに
螺合させることにより、押え板9は特殊ボルト8の第2
のおねじ部側の端面8eに固定される。Next, FIG. 3 shows details of the portion A in FIG. FIG. 3 is a partially enlarged cross-sectional view in a plane perpendicular to the axis of the bus conductor 2. In FIG. 3, the mounting seat 7 is a plate having a predetermined thickness, and has a through hole 7a. The special bolt 8 is inserted through the through hole 7a of the mounting seat 7, and its first
Metal burring with external thread 8a embedded in support insulator 4
4a is screwed into the female thread 4c. The holding plate 9 has a through hole 9a, and the second external thread 8b of the special bolt 8 is inserted into the through hole 9a. By screwing the nut 10 to the second male thread 8b of the special bolt 8, the holding plate 9
It is fixed to the end face 8e on the male screw part side.
【0010】特殊ボルト8の詳細を図4(a)及び(b)を用
いて説明する。各図において、胴部8cは素材である丸棒
から機械加工によって製作され、素材の形状を生かすべ
く当初は実質的に円柱状である。胴部8cの第2のおねじ
部8b側の端部8eに隣接する部分には係合部8dが形成さ
れ、この係合部8dはスパナ等の回螺器により挟持されや
すいように互いに平行な2つの面で構成されている。支
持碍子4に埋め込まれた金属製の埋金4aのめねじ部4cに
螺合する第1のおねじ部8aの長さL0は、ねじの締付強
度等を考慮して、ねじの直径の1.5倍程度の長さに設定
されている。また、第2のおねじ部8bの長さL1は、2
個のナツトが直列に螺合するために必要な長さを有して
いなければならない。ところで、一般にナツトの高さは
ねじの直径の80〜80数%に設定されているため、これを
考慮して、第2のおねじ部8bの長さL1はねじの直径の
2倍以上に設定されている。胴部8cの長さLは、図3か
ら明らかなように、取り付け座7の厚さよりもわずかに
大きくなるように設定されている。すなわち、図3のギ
ヤツプ11及び取り付け座7の貫通穴7aと特殊ボルト8の
胴部8cとの隙間は母線導体2の熱伸縮を吸収するための
ものであり、これらの隙間を設けることによって母線導
体2が拘束されないように設定されている。The details of the special bolt 8 will be described with reference to FIGS. 4 (a) and 4 (b). In each figure, the body 8c is manufactured by machining from a round bar as a material, and is initially substantially columnar to take advantage of the shape of the material. An engaging portion 8d is formed at a portion of the body portion 8c adjacent to the end 8e on the second male screw portion 8b side, and the engaging portions 8d are parallel to each other so as to be easily held by a screw device such as a spanner. It is composed of two surfaces. The length L 0 of the first male screw portion 8a is screwed into the internal thread portion 4c of the embedded support insulator 4 Metal filler metal 4a, taking into account the fastening strength of the screw or the like, the thread diameter It is set to about 1.5 times as long as. The length L 1 of the second male screw portion 8b is 2
The nuts must have the necessary length to be screwed in series. By the way, since the height of the nut is generally set to 80 to 80% of the diameter of the screw, in consideration of this, the length L1 of the second external thread portion 8b is set to be at least twice the diameter of the screw. Is set. The length L of the body 8c is set to be slightly larger than the thickness of the mounting seat 7, as is apparent from FIG. That is, the gap between the through hole 7a of the gap 11 and the mounting seat 7 in FIG. 3 and the body 8c of the special bolt 8 is for absorbing thermal expansion and contraction of the bus conductor 2, and by providing these gaps, the bus is provided. The conductor 2 is set so as not to be restrained.
【0011】次にこの実施例の組み立て手順を説明す
る。特殊ボルト8はあらかじめ支持碍子4ののめねじ部
4cに螺合し、第1の取り付け面4b上に固定されている。
この際、特殊ボルト8の係合部8dをスパナ等の回螺器に
より挾持し、締付トルクをこの部分に加える。一般に、
支持碍子4の第1の取り付け面4bには防錆塗料が塗布さ
れているため、塗料の剥離を防止するため、回螺器の操
作には注意を要するが、係合部8dが特殊ボルト8の胴部
8cの上部に設けられているため、回螺器による操作は比
較的容易に行なうことが可能である。Next, an assembling procedure of this embodiment will be described. The special bolt 8 is a female thread of the support insulator 4 in advance.
4c and is fixed on the first mounting surface 4b.
At this time, the engaging portion 8d of the special bolt 8 is clamped by a screw device such as a spanner, and a tightening torque is applied to this portion. In general,
Since the first mounting surface 4b of the support insulator 4 is coated with a rust-preventive paint, it is necessary to pay attention to the operation of the screw device in order to prevent peeling of the paint. Torso
Since it is provided on the upper part of 8c, the operation with the screw device can be performed relatively easily.
【0012】外被1の内部において、あらかじめ支持碍
子4の高さよりも高い位置に母線導体2をジャッキアッ
プしておき、次に、所定数の特殊ボルト8をそれぞれ螺
着した支持碍子4を外被1の内部の所定の位置に配置
し、外被1の外部よりボルト5によって支持台3に固定
する。ジャッキを下降させ、母線導体2の取り付け座7
の第2の取り付け面7bを支持碍子4の第1の取り付け面
4b上に載置する。この際、取り付け座7の貫通穴7aと特
殊ボルト8とが干渉しないように調整しておく。The bus conductor 2 is jacked up in advance in the inside of the jacket 1 at a position higher than the height of the support insulator 4, and then the support insulator 4 to which a predetermined number of special bolts 8 are screwed is removed. It is arranged at a predetermined position inside the jacket 1 and is fixed to the support 3 with bolts 5 from the outside of the jacket 1. Lower the jack to attach the busbar conductor 2
The second mounting surface 7b of the support insulator 4 to the first mounting surface
Place on 4b. At this time, adjustment is made so that the through hole 7a of the mounting seat 7 does not interfere with the special bolt 8.
【0013】次に、母線導体2の各開口部6から押え板
9をそれぞれ母線導体2の内部に挿入し、各特殊ボルト
8の第2のおねじ部8bが押え板9の各貫通穴9aを貫通す
るように装着する。そして、ナツト10を各特殊ボルト8
の第2のおねじ部8bにそれぞれ螺合させ、押え板9を各
特殊ボルト8の第2のおねじ部8b側端面8eに固定する。
これにより、母線導体2は支持碍子4に固定され、絶縁
支持される。Next, the holding plate 9 is inserted into the bus conductor 2 from each opening 6 of the bus conductor 2, and the second male thread 8 b of each special bolt 8 is inserted into each through hole 9 a of the holding plate 9. Attach so that it penetrates. Then, insert the nut 10 into each special bolt 8
And the holding plate 9 is fixed to the end surface 8e of the special bolt 8 on the second male screw portion 8b side.
Thus, the bus conductor 2 is fixed to the support insulator 4 and is insulated and supported.
【0014】次に、発電所等において既に組み立てられ
た上記母線導体支持装置において、支持碍子4が損傷し
た場合等における支持碍子の交換手順を説明する。ま
ず、損傷した支持碍子4の近傍において、ジャッキによ
り母線導体2を支持碍子4の高さと等しい高さに支持す
る。次に、当該支持碍子4上のナツト10及び押え板9を
一旦取外し、その後、図5に示すように、特殊ボルト8
の第2のおねじ部8bに再度ナツト10、10'を2個直列に螺
合させる。このとき、それぞれのナツト10、10'には互い
に逆向きの締付トルクをかけ、2個のナツト10、10'を固
着させる。そして、内側のナツト10'にスパナ等の回螺
器により戻しトルクをかけると、第1のおねじ部8aと支
持碍子4のめねじ部4cとの螺合が弛む。このまま戻しト
ルクを加え続けることによって最終的に、第1のおねじ
部8aと支持碍子4のめねじ部4cとの螺合が解除される。
そして、特殊ボルト8を取り付け座7の貫通穴7aから取
り出す。すべての特殊ボルト8を取外した後、外被1の
外部からボルト5(図1に示す)を取外し、損傷した支
持碍子4を水平方向に移動させ取外す。取外した支持碍
子4を最寄の点検開口部(自明につき図示せず)から外
被1の外側へ取り出し、代りに健全な支持碍子4を上記
手順とは逆の手順に従って装着する。Next, a description will be given of a procedure for replacing the supporting insulator when the supporting insulator 4 is damaged in the bus conductor supporting device already assembled in a power plant or the like. First, the bus conductor 2 is supported by a jack at a height equal to the height of the support insulator 4 near the damaged support insulator 4. Next, the nut 10 and the holding plate 9 on the support insulator 4 are once removed, and then, as shown in FIG.
The two nuts 10 and 10 'are again screwed in series with the second male screw portion 8b. At this time, tightening torques in opposite directions are applied to the respective nuts 10, 10 'to fix the two nuts 10, 10'. Then, when a return torque is applied to the inner nut 10 'by a screwdriver such as a spanner, the screw engagement between the first external thread 8a and the female thread 4c of the support insulator 4 is loosened. By continuing to apply the return torque as it is, the screwing of the first male thread 8a and the female thread 4c of the support insulator 4 is finally released.
Then, the special bolt 8 is taken out from the through hole 7a of the mounting seat 7. After all the special bolts 8 are removed, the bolts 5 (shown in FIG. 1) are removed from the outside of the jacket 1, and the damaged support insulator 4 is moved in the horizontal direction and removed. The removed support insulator 4 is taken out of the jacket 1 from the nearest inspection opening (not shown for obvious reasons), and a sound support insulator 4 is mounted instead in the reverse order to the above procedure.
【0015】なお、上記実施例において特殊ボルト8の
第2のおねじ部8bは、常時母線導体2の内部に存在する
ように取り付けられているため、相分離母線の耐電圧特
性に何等支障をきたすものではない。また、上記実施例
においては円筒状の母線導体2を有する相分離母線に応
用した場合を示したが、大口径の角筒導体や中空状の大
口径多角形導体を有する相分離母線に適用した場合であ
っても同様の効果を有する。これらの場合、角筒導体又
は多角形導体の一辺を取り付け座7の代用とすることが
できる。さらに、上記実施例においては1個の支持碍子
4に対して母線導体2の軸に直交する面内に2個の特殊
ボルト8を母線導体2の軸に対して対象に配置した場合
を示したが、特殊ボルト8を軸を含む内面に配置しても
よく、また1個の支持碍子4に対して1個又は3個以上
の特殊ボルト8を用いるように構成してもよい。In the above embodiment, since the second external thread 8b of the special bolt 8 is mounted so as to always exist inside the bus conductor 2, there is no hindrance to the withstand voltage characteristics of the phase separation bus. It is not cool. Further, in the above embodiment, the case where the present invention is applied to a phase separation bus having a cylindrical bus conductor 2 is shown, but the present invention is applied to a phase separation bus having a large-diameter rectangular cylindrical conductor or a hollow large-diameter polygonal conductor. Even in this case, the same effect is obtained. In these cases, one side of the rectangular cylindrical conductor or the polygonal conductor can be used as a substitute for the mounting seat 7. Further, in the above embodiment, the case where two special bolts 8 are arranged symmetrically with respect to the axis of the bus conductor 2 in a plane perpendicular to the axis of the bus conductor 2 for one support insulator 4 is shown. However, the special bolt 8 may be arranged on the inner surface including the shaft, or one or three or more special bolts 8 may be used for one support insulator 4.
【0016】[0016]
【考案の効果】以上のように、この考案によれば、母線
導体に設けられた開口部から特殊ボルトとナツト等の取
り付け状態やその弛みを確認することができる。また、
支持碍子には直接締付トルクがかからず、支持碍子が組
み立て作業中に損傷する危険性が低くなる。さらに、特
殊ボルトの第2のおねじ部に2個のナツトを直列に螺合
させること(ダブルナツト)によって、特殊ボルトを支
持碍子から容易に取外すことができ、これによって他の
支持碍子及びその固定のためのボルト等を取外すことな
く損傷した支持碍子だけを取外し、健全なものと交換す
ることができる。As described above, according to the present invention, the state of attachment of special bolts and nuts and the looseness thereof can be confirmed from the openings provided in the bus conductor. Also,
There is no direct tightening torque on the support insulator, which reduces the risk of damage to the support insulator during assembly. Further, by screwing two nuts in series with the second male thread portion of the special bolt (double nut), the special bolt can be easily removed from the supporting insulator, and thereby another supporting insulator and its fixing can be achieved. It is possible to remove only the damaged support insulator without removing bolts and the like, and replace it with a sound one.
【図1】この考案に係る母線導体支持装置の構成を示す
正面断面図FIG. 1 is a front sectional view showing a configuration of a bus conductor supporting device according to the present invention.
【図2】図1の一部破断側面図 FIG. 2 is a partially cutaway side view of FIG. 1;
【図3】図1におけるA部の詳細を示す部分拡大正面断
面図 FIG. 3 is a partially enlarged front view showing details of a portion A in FIG. 1;
Front view
【図4】(a)及び(b)は特殊ボルト8の詳細を示す側面図
及び正面図FIGS. 4A and 4B are a side view and a front view showing details of a special bolt 8;
【図5】支持碍子4の交換の場合におけるA部の詳細を
示す部分拡大正面断面図FIG. 5 is a partially enlarged front sectional view showing details of a portion A when the support insulator 4 is replaced.
【図6】従来の母線導体支持装置の構成を示す側部断面
図FIG. 6 is a side sectional view showing the configuration of a conventional bus conductor supporting device.
【図7】図6の部分的正面断面図FIG. 7 is a partial front sectional view of FIG. 6;
1 外被 2 母線導体 4 支持碍子 6 開口部 7 取り付け座 8 特殊ボルト 9 押え板 10 ナツト DESCRIPTION OF SYMBOLS 1 Outer jacket 2 Bus conductor 4 Support insulator 6 Opening 7 Mounting seat 8 Special bolt 9 Holding plate 10 Nut
Claims (1)
同一直線上の所定の位置に配置され、その上部に第1の
取り付け面及びめねじ部を有する複数の支持碍子と、 前記複数の支持碍子と対向するべき部分にそれぞれ設け
られた複数の開口部と、前記各開口部に部分的に設けら
れ前記支持碍子の第1の取り付け面に対向する第2の取
り付け面及び貫通穴を有する取り付け座とを有する円筒
状の母線導体と、 前記母線導体の取り付け座の厚さよりも所定寸法だけ長
い胴部と、前記胴部の両端にそれぞれもうけられた前記
支持碍子のめねじ部と螺合するための第1の長さを有す
る第1のおねじ部及び少なくとも2つのナツトと直列に
螺合するための第2の長さを有する第2のおねじ部と、
前記胴部の外周部に設けられスパナ等の回螺器と係合す
るための係合平面部とを有する特殊ボルトと、 前記特殊ボルトの第2のおねじ部が貫通する穴を有する
押え板と、 前記特殊ボルトの第2のおねじ部と螺合し、前記押え板
を前記特殊ボルトの第2のおねじ側端面に固定するナツ
トと、 を具備する母線導体支持装置。1. A grounded substantially cylindrical jacket; and a first cylindrical member disposed on a vertical plane including an axis of the jacket inside the outer jacket at a predetermined position on the same straight line. A plurality of support insulators each having a mounting surface and a female thread portion; a plurality of openings respectively provided in portions to be opposed to the plurality of support insulators; and a plurality of the support insulators partially provided in the respective openings. A cylindrical busbar conductor having a second mounting surface facing the first mounting surface and a mounting seat having a through hole, a trunk longer by a predetermined dimension than the thickness of the mounting seat of the busconductor, and the trunk A first male thread having a first length for threading with the female thread of the support insulator provided at each end of the support insulator, and a second length for threading in series with at least two nuts. A second external thread portion having
A special bolt provided on an outer peripheral portion of the body portion and having an engaging flat portion for engaging with a screw device such as a spanner; and a holding plate having a hole through which a second male thread portion of the special bolt passes. And a nut which is screwed with a second external thread portion of the special bolt and fixes the holding plate to a second external thread side end surface of the special bolt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2470692U JP2580939Y2 (en) | 1992-04-17 | 1992-04-17 | Bus conductor support device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2470692U JP2580939Y2 (en) | 1992-04-17 | 1992-04-17 | Bus conductor support device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0584131U JPH0584131U (en) | 1993-11-12 |
JP2580939Y2 true JP2580939Y2 (en) | 1998-09-17 |
Family
ID=12145625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2470692U Expired - Lifetime JP2580939Y2 (en) | 1992-04-17 | 1992-04-17 | Bus conductor support device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2580939Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114400600B (en) * | 2021-12-16 | 2023-11-17 | 河南平高电气股份有限公司 | Three-phase common-box bus conductor supporting device |
-
1992
- 1992-04-17 JP JP2470692U patent/JP2580939Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0584131U (en) | 1993-11-12 |
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