JPH0373208B2 - - Google Patents
Info
- Publication number
- JPH0373208B2 JPH0373208B2 JP57160148A JP16014882A JPH0373208B2 JP H0373208 B2 JPH0373208 B2 JP H0373208B2 JP 57160148 A JP57160148 A JP 57160148A JP 16014882 A JP16014882 A JP 16014882A JP H0373208 B2 JPH0373208 B2 JP H0373208B2
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- machine
- outlet
- tip
- pressure liquid
- 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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- Cable Accessories (AREA)
Description
【発明の詳細な説明】
本発明は高圧液体封入機器の口出し部接続装置
に係り、特に高圧液体中に浸漬されて使用される
電動機等を外部と電気的に接続するために機外に
導出される高圧液体封入機器の口出し部接続装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection device for an outlet of a high-pressure liquid-filled device, and in particular, a device for connecting an outlet of a high-pressure liquid-filled device to the outside for electrically connecting a motor or the like that is used immersed in a high-pressure liquid to the outside. The present invention relates to an outlet connection device for high-pressure liquid sealed equipment.
一般に高圧液体中（例えば水、シリコン油等）
中に浸漬されて使用される例えばインターナルポ
ンプ用電動機等の電気機器は、外部と電気的に接
続する必要があり、通常は口出し部を介して接続
されている。 Generally in high pressure liquids (e.g. water, silicone oil, etc.)
Electrical equipment, such as a motor for an internal pump, which is used while being immersed in the container, needs to be electrically connected to the outside, and is usually connected via an outlet.
第１図に従来の高圧液体封入機器における外部
との口出し部接続部分を示す。 FIG. 1 shows a connection portion of an outlet to the outside in a conventional high-pressure liquid sealed device.
該図のように、従来は口出しブツシング４内に
モールドで一体化された導体スタツド３と、絶縁
被覆されている機内電線の口出し部１における先
端部導体２とをつき合わせてハンダ付けし、その
後、ハンダ付け部近傍を高分子化合絶縁物として
ポリエチレン熱収縮チユーブ５で被覆している。
口出しブツシング４には、内部とシールするため
Ｏリング６が設けられており、ゴムキヤツプ７で
口出しブツシング４を押え、更に、このゴムキヤ
ツプ７はナツト８にて締付け押える構造となつて
いた。ところが、従来のこのような構造だと熱収
縮チユーブ５には直接電圧が加わる口出し部１の
先端部導体２が接しているため、熱収縮チユーブ
５には浸水課電劣化に強く、かつ、先端部導体２
に液体浸入がないようにするシール性が要求され
ている。従つて、熱収縮チユーブ５は、通常、ポ
リエチレン（その他に、ポリ塩化ビニルなどもあ
る）が用いられているが、このような高分子化合
物を用いると、浸水課電により水トリーという特
有の劣化が発生する。水トリーとはポリエチレン
などの高分子化合物中のボイドや異物を発生源と
し、浸水課電によりボイドや異物に水の凝縮が起
こることによつて高分子化合物に応力クリープを
生じさせる現象であり、水トリーが熱収縮チユー
ブ５を貫通するまでに発達した時点で熱収縮チユ
ーブ５の寿命となる。この寿命を長くするために
は、熱収縮チユーブ５の肉厚はかなり厚いものに
なるばかりか、熱収縮チユーブ５の製造状態によ
つては水トリーにより短寿命となる場合があつ
た。特に水トリーの進展は肉眼での発見は不可能
であるため、信頼度が重視される高圧液体封入機
器では、熱収縮チユーブ５は使用できなくなつて
しまう。 As shown in the figure, conventionally, a conductor stud 3 integrated with a mold in a lead bushing 4 and a tip conductor 2 at a lead part 1 of an insulated internal electric wire are butted together and soldered, and then The vicinity of the soldering part is covered with a polyethylene heat-shrinkable tube 5 as a polymer compound insulator.
The opening bushing 4 was provided with an O-ring 6 for sealing with the inside, and the opening bushing 4 was held down by a rubber cap 7, and the rubber cap 7 was further tightened and held down by a nut 8. However, in this conventional structure, the heat-shrinkable tube 5 is in contact with the tip conductor 2 of the lead-out portion 1 to which a voltage is directly applied, so the heat-shrinkable tube 5 is resistant to deterioration due to water immersion and the tip is in contact with the heat-shrink tube 5. Part conductor 2
Sealing properties are required to prevent liquid from entering. Therefore, the heat-shrink tube 5 is usually made of polyethylene (and polyvinyl chloride, etc.), but when such a polymer compound is used, it suffers from a peculiar deterioration called water tree due to water immersion. occurs. Water tree is a phenomenon that originates from voids and foreign matter in polymer compounds such as polyethylene, and causes stress creep in the polymer compound due to water condensation in the voids and foreign matter due to water immersion. The life of the heat shrink tube 5 is reached when the water tree has developed to the point where it penetrates the heat shrink tube 5. In order to extend this life, the wall thickness of the heat-shrinkable tube 5 must be considerably thickened, and depending on the manufacturing conditions of the heat-shrinkable tube 5, the life may be shortened due to water tree. In particular, since the development of water trees cannot be detected with the naked eye, the heat shrink tube 5 cannot be used in high-pressure liquid-filled equipment where reliability is important.
本発明は上述の点に鑑み成されたもので、その
目的とするところは、高分子化合絶縁物を用いて
浸水課電劣化を防止しシール性を向上させたもの
であつても、高分子化合絶縁物での水トリーの発
生を防ぎ、高信頼性の高圧液体封入機器の口出し
部接続装置を得るにある。 The present invention has been made in view of the above points, and its purpose is to prevent deterioration due to water immersion and improve sealing performance by using polymer compound insulators. An object of the present invention is to obtain a highly reliable outlet connection device for high-pressure liquid-filled equipment that prevents the occurrence of water trees in compound insulators.
本発明は導体スタツドのほぼ中央部に貫通穴を
設け、該貫通穴に口出し部の先端部導体を挿入す
ると共に、口出し部の絶縁被覆部分を機外に導出
して導体スタツドと口出し部の先端部導体を機外
で接続し、かつ、機内の口出し部絶縁被覆部分が
高分子化合絶縁物で被覆されていることにより、
所期の目的を達成するようになしたものである。 The present invention provides a through hole in the approximate center of the conductor stud, inserts the conductor at the tip of the lead part into the through hole, and guides the insulating coating part of the lead part to the outside of the machine to connect the conductor stud and the tip of the lead part. By connecting the conductors outside the machine and insulating the opening part inside the machine with a polymer compound insulator,
It was designed to achieve the intended purpose.
以下、図面の実施例に基づいて本発明を詳細に
説明する。尚、符号は従来と同一のものは同符号
を使用する。 Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings. Incidentally, the same reference numerals are used for the same parts as in the past.
第２図に本発明の一実施例を示す。該図の如
く、本実施例では貫通穴のあいた黄銅製の導体ス
タツド３ａを硬質ゴムでモールドし、高圧側（機
内側）に面する硬質ゴムの表面にＯリング６の溝
を持つSUS３０４の埋込金属１１もあわせモー
ルドした口出しブツシング４に、機内電線からの
口出し部１であるポリエチレン電線の先端部導体
２を前記導体スタツド３ａの貫通穴に通し、導体
スタツド３ａの機外先端部９にて先端部導体２と
導体スタツド３ａとをろう付している。この際ポ
リエチレン電線の口出し部１の絶縁被覆部分は、
口出しブツシング４内、即ち機外まで引き出され
て、口出しブツシング４の口出し部と、ポリエチ
レン電線の口出し部１のシールをポリエチレンの
熱収縮チユーブ５にて被覆処理して行つている。
なお、本実施例では、熱収縮チユーブ５のシール
性向上のために熱収縮チユーブ５の両端、及び口
出しブツシング４の高圧液浸漬部に、更に熱収縮
テープ１０にてテーピングを施しシール性の向上
をはかつている。また、口出しブツシング４には
シールとしてＯリング６が２箇所挿入され、更
に、機外から硬質ゴム製のキヤツプ７により押さ
えられ、この硬質ゴム製のキヤツプ７はナツト８
により締め付けられている。 FIG. 2 shows an embodiment of the present invention. As shown in the figure, in this example, a brass conductor stud 3a with a through hole is molded with hard rubber, and the hard rubber surface facing the high pressure side (inside of the machine) is filled with SUS304 with a groove for an O-ring 6. Pass the tip end conductor 2 of the polyethylene electric wire, which is the outlet part 1 from the in-machine electric wire, through the through hole of the conductor stud 3a through the outlet bushing 4 which is also molded with the insert metal 11, and then insert the tip end conductor 2 of the polyethylene wire, which is the outlet part 1 from the in-machine electric wire, through the through-hole of the conductor stud 3a. The tip conductor 2 and the conductor stud 3a are brazed. At this time, the insulation coating part of the lead part 1 of the polyethylene electric wire is
The wire is pulled out into the lead bushing 4, that is, outside the machine, and the lead part of the lead bushing 4 and the lead part 1 of the polyethylene electric wire are sealed with a polyethylene heat-shrinkable tube 5.
In this embodiment, in order to improve the sealing performance of the heat-shrinkable tube 5, both ends of the heat-shrinkable tube 5 and the high-pressure liquid immersed part of the lead bushing 4 are further taped with heat-shrinkable tape 10 to improve the sealing performance. is running. Further, two O-rings 6 are inserted into the opening bushing 4 as seals, and are further held down by a hard rubber cap 7 from outside the machine, and this hard rubber cap 7 is attached to a nut 8.
It is tightened by.
このような本実施例の構成とすることにより、
熱収縮チユーブ５の中には、ポリエチレン絶縁被
覆されている口出し部１が挿入されているため、
熱収縮チユーブ５の浸水課電劣化は、ポリエチレ
ン絶縁被覆がなく、口出し部１の先端部導体２と
直接接していた従来の構成のものに比較して激減
し、熱収縮チユーブ５中の水トリーの発生を皆無
に等しくすることができ、従つて、熱収縮チユー
ブ５の寿命を大幅に延長され信頼性を向上するこ
とができる。尚、上記の実施例では熱収縮チユー
ブ５を被覆しているものについて説明したが熱収
縮テープを直接被覆したもので同様な効果が得ら
れる。 By having the configuration of this embodiment as described above,
Since the opening part 1 covered with polyethylene insulation is inserted into the heat shrink tube 5,
The deterioration of the heat-shrinkable tube 5 due to water immersion is drastically reduced compared to the conventional structure in which there is no polyethylene insulation coating and the tip of the lead-out part 1 is in direct contact with the conductor 2. Therefore, the life of the heat-shrinkable tube 5 can be significantly extended and its reliability can be improved. In the above embodiment, the heat shrink tube 5 is covered, but the same effect can be obtained by directly covering the heat shrink tube 5 with heat shrink tape.
第３図に本発明と従来の構成における熱収縮チ
ユーブの破壊電圧特性を課電時間との関係で示
す。横軸に課電時間（hr）（50Hz換算）、縦軸に破
壊電圧（KV／mm）を示し、直線が従来方式のも
ので、直線Ｂが本発明品の場合である。該図から
明らかなように、本発明品Ｂは課電時間が105時
間においても初期と変わらない特性を有している
のに対し、従来品Ａでは課電時間105時間ではほ
とんど寿命（使用電圧としてＥで示す。）に近く
なつている。これは、従来品Ａにおける熱収縮チ
ユーブには多数の水トリーが発生しているため、
寿命が短くなると考えられ、本発明品Ｂが優れて
いることがわかるであろう。 FIG. 3 shows the breakdown voltage characteristics of the heat-shrinkable tubes in the present invention and the conventional structure in relation to the energization time. The horizontal axis shows the voltage application time (hr) (50Hz conversion), and the vertical axis shows the breakdown voltage (KV/mm), where the straight line is for the conventional method and the straight line B is for the product of the present invention. As is clear from the figure, product B of the present invention has the same characteristics as the initial state even after 10 5 hours of energization, whereas conventional product A has almost no lifespan ( (The working voltage is indicated by E.) This is because a large number of water trees occur in the heat shrinkable tube of conventional product A.
It can be seen that the product B of the present invention is superior because it is thought that the life is shortened.
また、第４図に熱収縮チユーブの浸水メグを第
３回と同様課電時間との関係で示す。横軸に課電
時間（hr）、縦軸に浸水メグ（MΩ）を示し、直
線Ｃが従来品で直線Ｄが本発明品の場合である。
該図に示す本特性からも、第３図と同様、従来品
Ｃの浸水メグが低下しているのは熱収縮チユーブ
に水トリーが多数発生しているためと判断され該
図からも従来品に比較して本発明品が優れている
ことがわかる。 In addition, FIG. 4 shows the relationship between the water immersion of the heat-shrinkable tube and the electrification time, as in the third case. The horizontal axis shows the energization time (hr), and the vertical axis shows the water immersion meg (MΩ), where straight line C is for the conventional product and straight line D is for the product of the present invention.
From this characteristic shown in the figure, it can be concluded that the reason for the decrease in water immersion MEG of conventional product C is due to the occurrence of a large number of water trees in the heat shrink tube. It can be seen that the product of the present invention is superior to the above.
以上説明した本発明の高圧液体封入機器の口出
し部接続装置によれば、導体スタツドのほぼ中央
部に貫通穴を設け、該貫通穴に口出し部の先端部
導体を挿入すると共に、口出し部の絶縁被覆部分
を機外に導出して導体スタツドと口出し部の先端
部導体を機外で接続し、かつ、機内の口出し部絶
縁被覆部分が高分子化合絶縁物で被覆されている
ものであるから、高分子化合絶縁物を用いた浸水
課電劣化を防止しシール性を向上させたものであ
つても、高分子化合絶縁物での水トリーの発生を
防ぎ、高信頼性の此種高圧液体封入機器の口出し
部接続装置を得ることができる。 According to the outlet connection device for high-pressure liquid sealed equipment of the present invention as described above, a through hole is provided at approximately the center of the conductor stud, the tip conductor of the outlet is inserted into the through hole, and the outlet is insulated. The covered part is led out of the machine and the conductor stud and the tip conductor of the lead part are connected outside the machine, and the insulated part of the lead part inside the machine is covered with a polymer compound insulator. This type of high-pressure liquid encapsulation is highly reliable and prevents the occurrence of water trees in polymer compound insulators, even if it uses polymer compound insulators to prevent deterioration due to water immersion and improve sealing performance. It is possible to obtain an equipment outlet connection device.
第１図は従来の高圧液体封入機器の口出し部接
続装置を示す断面図、第２図は本発明の一実施例
である高圧液体封入機器の口出し部接続装置を示
す断面図、第３図は熱収縮チユーブの課電時間に
おける破壊電圧を従来のものと本発明のものを比
較した特性図、第４図は熱収縮チユーブの課電時
間における浸水メグを従来のものと本発明のもの
を比較した特性図である。
１……機内電線の口出し部、２……先端部導
体、３，３ａ……導体スタツド、４……口出しブ
ツシング、５……熱収縮チユーブ、６……Ｏリン
グ、７……ゴムキヤツプ、８……ナツト、９……
機外先端部、１０……熱収縮テープ、１１……埋
込金属。
FIG. 1 is a cross-sectional view showing a conventional outlet connection device for a high-pressure liquid sealed device, FIG. 2 is a cross-sectional view showing an outlet connection device for a high-pressure liquid sealed device according to an embodiment of the present invention, and FIG. A characteristic diagram comparing the breakdown voltage of the conventional heat shrink tube and the inventive one during the energization time of the heat shrink tube. Figure 4 compares the water immersion MEG of the heat shrink tube during the energization time of the conventional one and the one of the present invention. FIG. DESCRIPTION OF SYMBOLS 1...In-flight electric wire outlet, 2...Tip conductor, 3, 3a...Conductor stud, 4...Outlet bushing, 5...Heat shrink tube, 6...O-ring, 7...Rubber cap, 8... ...Natsuto, 9...
External tip, 10... Heat shrink tape, 11... Embedded metal.
Claims (1)
され、先端部を除く周囲が絶縁被覆されると共
に、機内に位置する一部を高分子化合絶縁物で被
覆して成る口出し部と、該口出し部を機外と電気
的に接続するために先端部導体と接続し、しかも
モールドで一体となつた導体スタツドとを備えた
ものにおいて、 前記導体スタツドのほぼ中央部に貫通穴を設
け、該貫通穴に前記口出し部の先端部導体を挿入
すると共に、前記口出し部の絶縁被覆部分を機外
に導出して導体スタツドと口出し部の先端部導体
を機外で接続し、かつ、機内の口出し部絶縁被覆
部分が高分子化合絶縁物で被覆されていることを
特徴とする高圧液体封入機器の口出し部接続装
置。 ２ 前記導体スタツドをモールドするモールド材
の機外と機内との境界部近傍表面に金属を埋込ん
だことを特徴とする特許請求の範囲第１項記載の
高圧液体封入機器の口出し部接続装置。[Scope of Claims] 1. An opening led out from an electrical device that seals high-pressure liquid inside the machine, whose surroundings except the tip are insulated, and a part located inside the machine is covered with a polymer compound insulator. and a conductor stud which is connected to the tip conductor in order to electrically connect the lead-out portion to the outside of the machine and is integrally molded, wherein the conductor stud has a through hole approximately in the center thereof. a conductor at the tip of the outlet is inserted into the through hole, an insulating coating portion of the outlet is led out of the machine, and the conductor stud and the conductor at the tip of the outlet are connected outside the machine, and , an outlet connection device for high-pressure liquid sealed equipment, characterized in that an insulating coating portion of the outlet inside the device is coated with a polymer compound insulator. 2. The outlet connection device for high-pressure liquid sealed equipment as set forth in claim 1, wherein metal is embedded in the surface of the molding material for molding the conductor stud near the boundary between the outside and inside of the machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16014882A JPS5950708A (en) | 1982-09-14 | 1982-09-14 | Lead connecting device for high pressure liquid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16014882A JPS5950708A (en) | 1982-09-14 | 1982-09-14 | Lead connecting device for high pressure liquid sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5950708A JPS5950708A (en) | 1984-03-23 |
| JPH0373208B2 true JPH0373208B2 (en) | 1991-11-21 |
Family
ID=15708902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16014882A Granted JPS5950708A (en) | 1982-09-14 | 1982-09-14 | Lead connecting device for high pressure liquid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5950708A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02142917U (en) * | 1989-05-01 | 1990-12-04 | ||
| JP2006283560A (en) * | 2005-03-31 | 2006-10-19 | Valeo Thermal Systems Japan Corp | Refrigerant leakage preventive structure from fastening part of compressor constituting part |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5331187Y2 (en) * | 1973-10-11 | 1978-08-03 |
-
1982
- 1982-09-14 JP JP16014882A patent/JPS5950708A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5950708A (en) | 1984-03-23 |
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