JPH0218002B2 - - Google Patents
Info
- Publication number
- JPH0218002B2 JPH0218002B2 JP60079835A JP7983585A JPH0218002B2 JP H0218002 B2 JPH0218002 B2 JP H0218002B2 JP 60079835 A JP60079835 A JP 60079835A JP 7983585 A JP7983585 A JP 7983585A JP H0218002 B2 JPH0218002 B2 JP H0218002B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- sealing member
- molded
- molded body
- 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
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- Processing Of Terminals (AREA)
Description
【発明の詳細な説明】
本発明は、架橋ポリエチレン電力ケーブル（以
下CVケーブルと言う）終端部のシール部の形成
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a seal at the end of a crosslinked polyethylene power cable (hereinafter referred to as CV cable).
一般にCVケーブル終端部は絶縁油或は絶縁ガ
スを充填し絶縁性能を保障するよに構成されてい
るが、充填絶縁物をシールする方式としては、金
具とゴムパツキングを組み合わせる方式、また
は、金具とゴムプラスチツクテープを組み合わせ
る方式等がある。終端接続部シール方式は、終端
接続部の信頼性を向上できるものであるが、更
に、作業性が良いと共に信頼性を向上できるシー
ル部の実現が望まれている。 Generally, the terminal end of a CV cable is filled with insulating oil or gas to ensure insulation performance, but there are two ways to seal the filled insulator: a combination of metal fittings and rubber packing, or a combination of metal fittings and rubber packing. There are methods such as combining plastic tape. Although the end connection sealing method can improve the reliability of the end connection, it is desired to realize a seal that is both easy to work with and can improve reliability.
本発明は上記の状況に鑑み為されるものであ
り、簡単な作業で、信頼性が高いケーブル終端部
のシール部を製造できる形成法を提供することを
目的としたものである。 The present invention has been made in view of the above-mentioned situation, and an object of the present invention is to provide a forming method that can manufacture a highly reliable cable termination seal portion with simple operations.
本発明のCVケーブル終端部のシール部の形成
法は、封止フランジの内周側をケーブル絶縁体外
周に封止固定するに当り、封止部材として、封止
フランジの内周に密接して当該封止フランジを封
止固定する金属製埋込成形体と当該埋込成形体の
一部を埋め込ようにしてモールド成形されたケー
ブル絶縁体と同材質の成形ユニツトよりなり、上
記埋込成形体の内側に空洞部を設けてなるものを
用い、上記封止部材の成形ユニツトを加熱膨張さ
せた状態でこれをケーブル絶縁体外周に挿通し、
所定の位置に置いたところで当該成形ユニツトを
冷却収縮させて、これを上記ケーブル絶縁外周に
焼嵌め固定するものである。 The method for forming the seal part at the end of the CV cable of the present invention is that when sealing and fixing the inner circumferential side of the sealing flange to the outer circumference of the cable insulator, the sealing member is closely attached to the inner circumference of the sealing flange. It consists of a metal embedding molded body that seals and fixes the sealing flange, and a molded unit made of the same material as the cable insulator that is molded to embed a part of the embedding molded body. Using a molded unit with a cavity inside the body, the molded unit of the sealing member is heated and expanded and inserted into the outer periphery of the cable insulator.
Once placed in a predetermined position, the molded unit is cooled and shrunk, and is shrink-fitted and fixed to the outer periphery of the cable insulation.
本発明のCVケーブル終端部のシール部の形成
法を遂行するに当たり、特に埋込成形体の内側に
空洞部を設けた封止部材を用いる理由は、次の通
りである。 The reason why a sealing member having a cavity provided inside an embedded molded body is particularly used in carrying out the method of forming a seal portion at the end of a CV cable according to the present invention is as follows.
即ち、第２図に示すような埋込成形体７′の内
側全体に渡つて成形ユニツト６′を一体モールド
した封止部材８′を用いることも考えられるが、
このような封止部材を用いた場合、この成形ユニ
ツトを加熱膨脹させようとした際に、埋込成形体
内側の成形ユニツトの膨張が埋込成形体により抑
制されるため、加熱時封止部材の中央附近におけ
る内径が十分に拡張せず、従つて封止部材のCV
ケーブル絶縁体に対する挿入作業性が悪くなる恐
れがあると共に、常温時と加熱時の封止部材の内
径差が小さいため、ケーブル絶縁体に対して十分
な密着力が期待できない恐れがある。 That is, it is conceivable to use a sealing member 8' in which a molding unit 6' is integrally molded over the entire inside of an embedded molded body 7' as shown in FIG.
When such a sealing member is used, when an attempt is made to heat and expand the molded unit, the expansion of the molded unit inside the embedded molded body is suppressed by the embedded molded body. The inner diameter near the center of the sealing member does not expand sufficiently, and therefore the CV of the sealing member
There is a possibility that the insertion workability into the cable insulator may be deteriorated, and since the difference in the inner diameter of the sealing member at room temperature and when heated is small, there is a possibility that sufficient adhesion force to the cable insulator cannot be expected.
この点に鑑み、本発明のCVケーブル終端部の
シール部の形成法においては、前述の通り埋込成
形体の内側に空洞部を設けた封止部材を用いてい
る訳であるが、このような封止部材を用いた場
合、加熱時埋込成形体の内側における成形ユニツ
トに逃げ場（空洞部）が確保されるため、埋込成
形体内側の成形ユニツトの膨張が効果的に行われ
るようになる。 In view of this, in the method of forming the seal part at the end of the CV cable of the present invention, a sealing member having a cavity inside the embedded molded body is used as described above. When a sealing member such as Become.
以下本発明のCVケーブル終端部のシール部の
形成法の一実施例を第１図及び第３図により説明
する。 An embodiment of the method for forming a seal portion at the end of a CV cable according to the present invention will be described below with reference to FIGS. 1 and 3.
初めに、CVケーブルの終端部のシール部につ
いて説明すると、第１図は封止部材を取付けたケ
ーブル終端部の断面図であり、１はCVケーブル
の絶縁体、２は防水部、３は下端を防水部２を介
しCVケーブルの絶縁体１外周に気密に封止され
た下部端銅管、４は下部端銅管３と上部端銅管５
との間に外周が封止固定された封止フランジであ
る。８はCVケーブルの絶縁体１外周に固定され
た封止部材であり、金属で形成された埋込成形体
７と埋込成形体７の一部を埋め込むようにして成
形されたCVケーブルの絶縁体１と同材質の絶縁
性ポリオレフインもしくは半導電性ポリオレフイ
ンの成形ユニツト６よりなり、上記埋込成形体７
とCVケーブルの絶縁体１との間に空洞部１０を
形成して構成されている。 First, to explain the sealing part at the terminal end of the CV cable, Figure 1 is a cross-sectional view of the cable terminal part with the sealing member attached, where 1 is the insulator of the CV cable, 2 is the waterproof part, and 3 is the lower end. The lower end copper tube is hermetically sealed to the outer periphery of the insulator 1 of the CV cable through the waterproof part 2, 4 is the lower end copper tube 3 and the upper end copper tube 5
This is a sealing flange whose outer periphery is sealed and fixed between. Reference numeral 8 denotes a sealing member fixed to the outer periphery of the insulator 1 of the CV cable, and the sealing member 8 is a sealing member fixed to the outer periphery of the insulator 1 of the CV cable. The molded unit 6 is made of insulating polyolefin or semiconductive polyolefin and is made of the same material as the body 1, and is connected to the embedded molded body 7.
A hollow portion 10 is formed between the cable and the insulator 1 of the CV cable.
次に、本発明の特徴である上記封止部材８を
CVケーブルの絶縁体１外周に固定するに当つて
の焼嵌めに付いて説明すると、封止部材８は、80
℃〜150℃の温度に加熱膨脹され、この状態で終
端部内CVケーブルの絶縁体１外周に挿通され、
所定位置に取り付けたところで当該封止部材８の
成形ユニツト６を冷却収縮させ、以てこれをCV
ケーブルの絶縁体１外周に密着固定される。そし
て、絶縁流体９を焼嵌めにより封止する。この
時、前述の通り封止部材として、第２図に示すよ
うなものを用いると、埋込成形体７′の内側の成
形ユニツト（矢印Ｂ部分）が他の成形ユニツト
（矢印Ａ部分）より膨張が制限される恐れがある。
このため、本実施例では図示のように埋込成形体
７の内側において成形ユニツト６の一部を切り欠
いて空洞部１０を設けたものを用いている。第４
図は本発明の他の実施例において用いられる封止
部材８″にして、このものを用いた場合において
も前述の実施例と実質同じ効果を奏し得る。尚、
図中１１は空洞部、１２はダイヤフラム金属版、
１３は空気抜き、１４は孔である。 Next, the sealing member 8, which is a feature of the present invention, is
To explain about shrink fitting when fixing to the outer periphery of the insulator 1 of the CV cable, the sealing member 8 is
It is heated and expanded to a temperature of ℃ to 150℃, and in this state is inserted into the outer periphery of the insulator 1 of the CV cable inside the termination section,
Once installed in a predetermined position, the molded unit 6 of the sealing member 8 is cooled and shrunk, thereby converting it into CV.
It is closely fixed to the outer periphery of the insulator 1 of the cable. Then, the insulating fluid 9 is sealed by shrink fitting. At this time, if the sealing member shown in FIG. 2 is used as described above, the molded unit inside the embedded molded body 7' (arrow B part) will be closer to the other molded units (arrow A part). Expansion may be restricted.
For this reason, in this embodiment, a cavity 10 is provided by cutting out a part of the molded unit 6 inside the embedded molded body 7, as shown in the figure. Fourth
The figure shows a sealing member 8'' used in another embodiment of the present invention, and even when this member is used, substantially the same effect as in the above-mentioned embodiment can be achieved.
In the figure, 11 is a cavity, 12 is a diaphragm metal plate,
13 is an air vent, and 14 is a hole.
尚、封止部材に対する加熱は、通常大気中で行
われるが、これを窒素ガスなどの不活性ガスを充
填した密閉容器中で行うようにしても良い。 Although the sealing member is normally heated in the atmosphere, it may also be heated in a closed container filled with an inert gas such as nitrogen gas.
以上説明したように、本発明のCVケーブル終
端部のシール部の形成法によれば、封止部材を
CVケーブルの絶縁体に焼嵌めにより固定するの
で、現地におけるモールド作業がなく、このため
作業が大幅に簡略化され、その結果作業性が大幅
に向上する。 As explained above, according to the method for forming a seal portion at the end of a CV cable of the present invention, the sealing member is
Since it is fixed to the CV cable insulator by shrink fitting, there is no on-site molding work, which greatly simplifies the work and greatly improves work efficiency.
又、成形ユニツトがCVケーブルの絶縁体と同
材質のもので構成されることから、これら両者間
の密着性がよく、このため高い気密性を奏し得、
延いては信頼性の高いCVケーブル終端部のシー
ル部を形成し得る。 In addition, since the molded unit is made of the same material as the CV cable insulator, there is good adhesion between the two, resulting in high airtightness.
In turn, it is possible to form a highly reliable seal at the end of the CV cable.
更に又、埋込成形体内側に空洞部を設けた封止
部材をCVケーブルの絶縁体に焼嵌めにより固定
するので、加熱時成形ユニツトの加熱膨張が良好
に行なわれ、従つて、CVケーブルの絶縁体への
封止部材の挿入作業が極めて容易となる。 Furthermore, since the sealing member with a cavity inside the embedded molded body is fixed to the insulator of the CV cable by shrink fitting, the molded unit can be thermally expanded during heating, and therefore the CV cable can be heated. The work of inserting the sealing member into the insulator becomes extremely easy.
第１図は本発明のCVケーブル終端部の形成法
の一実施例説明図、第２図は埋込成形体の内側に
空洞部を有してなる封止部材の断面図、第３図は
上記本実施例において用いられる封止部材の断面
図、第４図は他の実施例において用いられる封止
部材の断面図である。
１：CVケーブルの絶縁体、２：防水部、３：
下部端銅管、４：封止フランジ、５：上部銅管、
６，６′６″：成形ユニツト、７，７′，７″：埋込
成形体、８，８′，８″：封止部材、９：絶縁流
体、１０，１１：空洞部、１２：ダイヤフラム金
属板、１３：空気抜、１４：孔。
FIG. 1 is an explanatory diagram of an embodiment of the method of forming a CV cable end according to the present invention, FIG. 2 is a sectional view of a sealing member having a cavity inside an embedded molded body, and FIG. FIG. 4 is a sectional view of the sealing member used in this embodiment, and FIG. 4 is a sectional view of the sealing member used in another embodiment. 1: CV cable insulator, 2: waterproof part, 3:
Lower end copper tube, 4: Sealing flange, 5: Upper copper tube,
6, 6'6'': Molded unit, 7, 7', 7'': Embedded molded body, 8, 8', 8'': Sealing member, 9: Insulating fluid, 10, 11: Cavity, 12: Diaphragm Metal plate, 13: air vent, 14: hole.
Claims (1)
ブル絶縁体１外周に下端が封止され、絶縁流体９
を充填された下部端銅管３と上部銅管５との間に
外周側が封止固定された封止フランジ４の内周側
を、上記ケーブル絶縁体１外周に封止部材８を用
いて封止固定するに当り、封止部材８として封止
フランジ４の内周に密接して当該封止フランジ４
を封止固定する金属製埋込成形体７と当該埋込成
形体７の一部を埋め込ようにしてモールド成形さ
れたケーブル絶縁体１と同材質の成形ユニツト６
よりなり、上記埋込成形体７の内側に空洞部１
０，１１を設けてなるものを用い、上記封止部材
８の成形ユニツト６を加熱膨脹させた状態でこれ
をケーブル絶縁体１外周に挿通し、所定位置に置
いたところで当該成形ユニツト６を冷却収縮させ
て、これを上記ケーブル絶縁体１外周に焼嵌め固
定することを特徴とする架橋ポリエチレン電力ケ
ーブル終端部のシール部の形成法。1 At the terminal end of a cross-linked polyethylene power cable, the lower end is sealed to the outer periphery of cable insulator 1, and insulating fluid 9
The inner circumferential side of the sealing flange 4, whose outer circumferential side is sealed and fixed between the lower end copper tube 3 and the upper copper tube 5 filled with When fixing, the sealing member 8 is attached to the sealing flange 4 in close contact with the inner circumference of the sealing flange 4.
A metal embedding molded body 7 for sealing and fixing the embedding molded body 7, and a molded unit 6 made of the same material as the cable insulator 1, which is molded to embed a part of the embedding molded body 7.
There is a cavity 1 inside the embedded molded body 7.
0 and 11, the molded unit 6 of the sealing member 8 is heated and expanded and inserted into the outer periphery of the cable insulator 1, and when it is placed in a predetermined position, the molded unit 6 is cooled. A method for forming a seal at a terminal end of a crosslinked polyethylene power cable, which comprises shrinking and shrink-fitting and fixing it to the outer periphery of the cable insulator 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60079835A JPS60237813A (en) | 1985-04-15 | 1985-04-15 | Method for forming a seal at the end of a cross-linked polyethylene power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60079835A JPS60237813A (en) | 1985-04-15 | 1985-04-15 | Method for forming a seal at the end of a cross-linked polyethylene power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60237813A JPS60237813A (en) | 1985-11-26 |
| JPH0218002B2 true JPH0218002B2 (en) | 1990-04-24 |
Family
ID=13701267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60079835A Granted JPS60237813A (en) | 1985-04-15 | 1985-04-15 | Method for forming a seal at the end of a cross-linked polyethylene power cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60237813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112006002694T5 (en) | 2005-10-17 | 2008-09-25 | J. Morita Mfg. Corp. | Medical digital X-ray imaging device and medical and digital X-ray sensor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516013B2 (en) * | 1972-05-08 | 1976-02-24 | ||
| JPS5522912B2 (en) * | 1973-07-06 | 1980-06-19 | ||
| JPS55106015A (en) * | 1979-02-05 | 1980-08-14 | Hitachi Cable | Insulation reinforcing unit of plastic insulated power cable and method of forming same |
-
1985
- 1985-04-15 JP JP60079835A patent/JPS60237813A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112006002694T5 (en) | 2005-10-17 | 2008-09-25 | J. Morita Mfg. Corp. | Medical digital X-ray imaging device and medical and digital X-ray sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60237813A (en) | 1985-11-26 |
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