JPS62144518A - Cooling of plumbed part - Google Patents
Cooling of plumbed partInfo
- Publication number
- JPS62144518A JPS62144518A JP28665985A JP28665985A JPS62144518A JP S62144518 A JPS62144518 A JP S62144518A JP 28665985 A JP28665985 A JP 28665985A JP 28665985 A JP28665985 A JP 28665985A JP S62144518 A JPS62144518 A JP S62144518A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- insulating oil
- cooling
- leadwork
- lead work
- 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
Links
Landscapes
- Cable Accessories (AREA)
- Processing Of Terminals (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
アルミ被紙絶縁電カケープルの、接続箱や終端箱とアル
ミ被との間のシール手段には、鉛工を用いる。[Detailed Description of the Invention] [Field of Industrial Application] Lead work is used as a sealing means between the junction box or termination box and the aluminum sheath of an aluminum paper-sheathed insulating electrical cable.
鉛工には、■アルミメンキ、ｌす座鉛工、０本鉛工の３
段階がある。鉛工時のアルミ被の温度は、ｉｌｌ ／Ｔ
ｌ ７ＩＩ −′：ｄ 、−五ｎ％ ４’ｒ 酷ｆｓ
７．’Ｋ ／ （ｈ Ｉ’７’ｌ ｋ ’ＲＱ下ｎ％
がそれに次ぐ。There are 3 types of lead work: ■Aluminum lead work, 1-piece lead work, and 0-piece lead work.
There are stages. The temperature of the aluminum coating during lead work is ill /T
l 7II -':d, -5n% 4'r Severe fs
7. 'K / (h I'7'l k 'RQ lower n%
is next.
鉛工時の熱によって絶縁体の紙が損傷を受けるようであ
ってはならないが、特に半合成紙の場合はプラスチ・ン
クの溶は出しを防ぐために冷却が必要になる。The insulating paper must not be damaged by the heat generated during lead work, but semi-synthetic paper in particular requires cooling to prevent plastic ink from melting.
この発明は、主に半合成紙絶縁型カケープルの接続時に
おける。鉛工部分の冷却方法に関するもので、特に上記
■のアルミメッキと、■の座鉛工の際の鉛工部分の冷却
方法に関するものである。This invention is mainly used when connecting semi-synthetic paper insulation type cables. The present invention relates to a method for cooling a lead work part, and in particular relates to a method for cooling a lead work part during aluminum plating as described in (1) above, and a method for cooling a lead work part during lead buckling as described in (2) above.
〔従来の技術とその問題点］
（１）半合成紙アルミ被ケーブルの鉛工をクラフト紙の
場合と同じ方法で行い、ただ、鉛工近くのアルミ被の温
度を管理する。[Conventional technology and its problems] (1) Lead work for semi-synthetic paper aluminum sheathed cables is carried out in the same way as for kraft paper, except that the temperature of the aluminum sheath near the lead work is controlled.
舎その欠点：しかし、この場合はケーブル絶縁体の温度
が上昇しすぎ、たとえば、よく使われるＰＰＬＰのうち
のポリプロピレンが溶は出すことがある。However, in this case, the temperature of the cable insulation may rise too much and, for example, the polypropylene of the commonly used PPLP may melt.
（２）低温ハンダによる流し込み鉛工も、一部に適用さ
れている（たとえば、昭和５８年電気学会全国大会講演
論文集、１２６０参照）。(2) Plumb work using low-temperature solder is also applied in some cases (for example, see Proceedings of the 1981 National Conference of the Institute of Electrical Engineers of Japan, 1260).
・その欠点：しかし、この場合でも、最も温度の高くな
る■のアルミメッキは従来の方法で行われるため、プラ
スチックの溶は出しは避けられない。・Disadvantages: However, even in this case, aluminum plating, which involves the highest temperature, is done using the conventional method, so melting of the plastic is unavoidable.
（３）第４図のように、ケーブルコア１０〜アルミ被１
４間の隙間１６に絶縁油１８を流して、ケーブル絶縁体
１２の温度上昇を防ぐということも行われる。なお、同
図で２０は鉛工部分、２２は防食層を示す。(3) As shown in Figure 4, from cable core 10 to aluminum sheath 1
Insulating oil 18 is also poured into the gap 16 between the cables 1 and 4 to prevent the temperature of the cable insulator 12 from rising. In addition, in the figure, 20 indicates a leadwork part, and 22 indicates a corrosion protection layer.
・その欠点：この場合、冷却用の絶縁油１８は鉛工を行
うマンホールでなく、別のマンホールから供給しなけれ
ばならない。それらの間の距離が長くなると、冷却に必
要な流量を得るために絶縁油１８に高い圧力を加えなけ
ればならず、アルミ被１４がその圧力に耐えられなくな
るという問題も起きる。- Disadvantage: In this case, the insulating oil 18 for cooling must be supplied from a separate manhole, not the manhole where the lead work is performed. If the distance between them becomes long, a high pressure must be applied to the insulating oil 18 in order to obtain the flow rate necessary for cooling, and the problem arises that the aluminum sheath 14 cannot withstand the pressure.
［問題点を解決するための手段］ この発明は、第１図のように。[Means for solving problems] This invention is as shown in FIG.
鉛工部分２０を含むアルミ被１４の端部の内径を拡大し
、そのようにしたアルミ被とケーブルコア１０との間に
廁い／ｉ？３０を挿入し、その管を使って絶縁油を送り
こみ、鉛工部分のアルミ被の内側に絶縁油を流すことに
より、上記の問題の解決を図ったものである。The inner diameter of the end of the aluminum sheath 14 including the leadwork portion 20 is enlarged, and there is a gap between the aluminum sheath and the cable core 10. The above problem was solved by inserting a pipe into the pipe and using the pipe to send insulating oil and flowing the insulating oil inside the aluminum cover of the leadwork part.
［その説明］
（１）アルミ被端部の内径を拡大するには、たとえば次
の公知の方法を用いる。[Description] (1) To enlarge the inner diameter of the aluminum end portion, for example, the following known method is used.
はじめ、第２図のように、アルミ被１４に、適当な間隔
をおいて２個の押えダイス４０を固定し、それらにダイ
ス押え金具４２を固定する。そしてそれらの間を油圧シ
リンダ４４を使って強力に押広げ、アルミ被１４を引伸
ばす。First, as shown in FIG. 2, two presser dies 40 are fixed to the aluminum cover 14 at an appropriate interval, and a die presser metal fitting 42 is fixed to them. Then, a hydraulic cylinder 44 is used to forcefully push the space between them to stretch the aluminum sheath 14.
次に第３図のように、油圧シリンダ４４のロッド先端に
押広げ金具４６をとりつけ、そのテーパ面を持つ円筒部
分４８をアルミ被１４内面に無理に押込んで、広げる。Next, as shown in FIG. 3, a spreading metal fitting 46 is attached to the tip of the rod of the hydraulic cylinder 44, and the cylindrical portion 48 having a tapered surface is forcefully pushed into the inner surface of the aluminum sheath 14 to spread it.
（２）以上のようにして広げたアルミ被１４とケーブル
コア１０との間に、冷却用の細い’ｉ’７３０を挿入す
る。そして、圧力油そう３２又は循環ポンプから流駿計
３４を通して絶縁油３６を流しこむ。(2) Insert the thin 'i' 730 for cooling between the aluminum sheath 14 and the cable core 10 spread out as described above. Then, insulating oil 36 is poured from the pressure oil tank 32 or the circulation pump through the flow meter 34.
管３０の先端から流れ出る絶縁油３６の大部分は、第１
図の矢印のようにアルミ被１４の端部の方に流れてケー
ブル外に出、奥の方向（同図で左方向）にはほとんど流
れない、その理由は、■内径を広げていないアルミ被１
４の奥の部分とケーブルコアｌＯとの隙間１６は狭くて
油波抵抗が高く、かつもともと絶縁油が充満しているか
ら絶縁油は流れにくいこと、■出口に向う方は、アルミ
被１４内部が広くなっているので絶縁油が流れ易いこと
、である。Most of the insulating oil 36 flowing out from the tip of the pipe 30 is
As shown by the arrow in the figure, it flows toward the end of the aluminum sheath 14 and exits the cable, and hardly flows inward (towards the left in the figure). The reason is: 1
The gap 16 between the inner part of 4 and the cable core IO is narrow and has high oil wave resistance, and is originally filled with insulating oil, so it is difficult for the insulating oil to flow. This is because the insulating oil flows easily because the area is wide.
（３）竹３０の先端から絶縁油３６を流しながら、鉛工
部分２０の鉛工を実施する。そのときの熱は、絶縁油３
６によって運ばれてケーブル外に出るから、ケーブル絶
縁体１２の温度上昇は低く押えられる。(3) Perform lead work on the lead work portion 20 while flowing insulating oil 36 from the tip of the bamboo 30. The heat at that time is insulating oil 3
6 and exits the cable, the temperature rise of the cable insulator 12 can be kept low.
合、ポリプロピレンの融点は１４０°Ｃ程度であるが、
絶縁油を０．３ １ ／ｗｉｎ以上流すことにより。In this case, the melting point of polypropylene is about 140°C,
By flowing insulating oil at a rate of 0.3 1 /win or more.
その溶出しを防止できる。Its elution can be prevented.
このとき実施する鉛工は、アルミメッキと座鉛工とであ
る。木鉛工は接続作業の最後の段階で実施する。The lead work to be carried out at this time is aluminum plating and lead seating. Wood lead work is carried out at the last stage of connection work.
［発明の効果１
（１）アルミ被とケーブルコアとの間に細い管を挿入し
、その管を使って絶縁油を送りこみ、鉛工部分のアルミ
被の内側に絶縁油を流すので、その絶縁油によって鉛工
時の熱が連ばれ、半合成紙にも損傷を与えないようにす
ることができる。[Effect of the invention 1 (1) A thin pipe is inserted between the aluminum sheath and the cable core, and the insulating oil is sent through the pipe to flow inside the aluminum sheath of the lead work. The insulating oil allows heat to be carried away during lead work and prevents damage to the semi-synthetic paper.
（２）鉛工部分を含むアルミ被端部の内径を拡大してい
るので、′Ｉ？３０によって送りこんだ絶縁油が流れ易
くなり、熱の迂搬もスムーズに行われる。(2) Since the inner diameter of the aluminum end part including the leadwork part has been enlarged, 'I? 30 allows the insulating oil sent to flow easily, and heat to be transferred smoothly.
第１図は本発明の詳細な説明図、
る工程を順に示す説明図、
ｌＯ：ケーブルコア １２：ケーブル絶縁体１４ニアル
ミ被 １６：隙間
２０：鉛工部分 ３０：管
３６：絶縁油Fig. 1 is a detailed explanatory diagram of the present invention, an explanatory diagram showing the steps in order, 1O: cable core 12: cable insulator 14 aluminum sheathing 16: gap 20: leadwork part 30: pipe 36: insulating oil
Claims (1)
際して、 鉛工部分を含むアルミ被端部の内径を拡大し、そのよう
にしたアルミ被とケーブルコアとの間に細い管を挿入し
、その管を使って絶縁油を送りこみ、鉛工部分のアルミ
被の内側に絶縁油を流すことを特徴とする鉛工部分の冷
却方法。[Claims] When performing lead work on the aluminum sheathing of an aluminum-sheathed power cable, the inner diameter of the aluminum sheathing end including the leadwork portion is enlarged, and there is a gap between the aluminum sheathing and the cable core. A method for cooling leadwork parts that is characterized by inserting a thin tube, sending insulating oil through the pipe, and flowing the insulating oil inside the aluminum sheath of the leadwork part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60286659A JPH0669258B2 (en) | 1985-12-19 | 1985-12-19 | Cooling method for lead parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60286659A JPH0669258B2 (en) | 1985-12-19 | 1985-12-19 | Cooling method for lead parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62144518A true JPS62144518A (en) | 1987-06-27 |
| JPH0669258B2 JPH0669258B2 (en) | 1994-08-31 |
Family
ID=17707289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60286659A Expired - Lifetime JPH0669258B2 (en) | 1985-12-19 | 1985-12-19 | Cooling method for lead parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669258B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5638909A (en) * | 1979-09-01 | 1981-04-14 | Showa Electric Wire & Cable Co | Method of soldering metallic corrugated sheath |
-
1985
- 1985-12-19 JP JP60286659A patent/JPH0669258B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5638909A (en) * | 1979-09-01 | 1981-04-14 | Showa Electric Wire & Cable Co | Method of soldering metallic corrugated sheath |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0669258B2 (en) | 1994-08-31 |
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