JPH0270218A - Temperature detecting method at electrical joint - Google Patents
Temperature detecting method at electrical jointInfo
- Publication number
- JPH0270218A JPH0270218A JP21813688A JP21813688A JPH0270218A JP H0270218 A JPH0270218 A JP H0270218A JP 21813688 A JP21813688 A JP 21813688A JP 21813688 A JP21813688 A JP 21813688A JP H0270218 A JPH0270218 A JP H0270218A
- Authority
- JP
- Japan
- Prior art keywords
- memory alloy
- shape
- electrical connection
- corona
- shape memory
- 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
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Cable Accessories (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Fire-Detection Mechanisms (AREA)
- Emergency Alarm Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電気接続部の温度検知方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for detecting the temperature of an electrical connection.
従来、発電所や変電所等の機器端子に接続されるリード
線の圧着端子や締付端子等の異常加熱を検知する方法と
して、サーモ・ラベルを接続部に貼着し、サーモ・ラベ
ルの色の変化で接続部の異常を検知する方法が広く知ら
れている。Conventionally, as a method to detect abnormal heating of crimp terminals or clamp terminals of lead wires connected to equipment terminals in power plants, substations, etc., thermo labels are attached to the connections, and the color of the thermo label is A widely known method is to detect abnormalities in connections based on changes in .
また、危険表示を施した形状記憶合金を、危険表示が監
視所から見えないようにして電気接続部に取り付け、上
記形状記憶合金の変態温度における形状復帰により危険
表示が監視所側に露出するように構成した異常発熱検知
機能を有する電路の接続部が特公昭６３−２４３０９号
公報により知られている。In addition, a shape memory alloy with a danger mark is attached to the electrical connection part so that the danger mark cannot be seen from the guard station, and the danger mark is exposed to the guard house when the shape memory alloy returns to its shape at the transformation temperature. Japanese Patent Publication No. 63-24309 discloses a connecting portion of an electric circuit having an abnormal heat generation detection function configured as follows.
しかしながら、サーモ・ラベルの色の変化で接続部の異
常を検知する方法においては、小さなサーモ・ラベルで
は高所にある接続部の異常を確認することが困難である
ばかりでなく、屋外にある電気接続部の異常検出にサー
モ・ラベルを使用すると、サーモ・ラベルが太陽光、風
雨等により徐々に変色劣化し、或いは、糊が劣化して脱
落し電気接続部の異常を検知し得なくなる等の問題点が
あった。However, in the method of detecting abnormalities in connections based on changes in the color of thermolabels, it is not only difficult to identify abnormalities in connections located at high places using small thermolabels, but also When thermo labels are used to detect abnormalities in electrical connections, they may gradually discolor and deteriorate due to sunlight, wind and rain, or the adhesive may deteriorate and fall off, making it impossible to detect abnormalities in electrical connections. There was a problem.
また、形状記憶合金の変態温度における形状復帰により
危険表示が監視所側に露出するように構成された電気接
続部においては、小さな危険表示では高所にある接続部
の異常を検知することが難かしく、特に、夜間危険表示
を目視により監視し電気接続部の異常を検知することは
、細心の注意力をもってしても極めて困難であるという
問題点がある。In addition, in electrical connections that are configured so that the hazard display is exposed to the monitoring station by returning to its shape at the transformation temperature of the shape memory alloy, it is difficult to detect abnormalities in high-up connections with small danger indicators. However, there is a problem in that it is extremely difficult to visually monitor the danger display at night and detect abnormalities in electrical connections, even with the utmost care.
本発明は上記問題点に鑑みなされたもので、電気接続部
の異常を確実に検知しうる電気接続部の温度検知方法を
提供することを目的とする。The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a method for detecting the temperature of an electrical connection part that can reliably detect abnormalities in the electrical connection part.
本発明方法は上記問題点を解決するために、突起部を有
する形状記憶合金を、所定形状に折り曲げて電気接続部
に取り付け、電気接続部の温度が一定温度値以上になっ
たとき上記形状記憶合金の形状復帰により該形状記憶合
金の突起部にコロナを発生させ、該コロナにより電気接
続部の異常を検知する方法により、従来の問題点を解決
したものである。In order to solve the above problems, the method of the present invention bends a shape memory alloy having a protrusion into a predetermined shape and attaches it to an electrical connection part, and when the temperature of the electrical connection part exceeds a certain temperature value, the shape memory alloy The conventional problems are solved by a method in which a corona is generated in the protrusions of the shape memory alloy by the shape recovery of the alloy, and an abnormality in the electrical connection is detected using the corona.
〔作 用］
電気接続部に異常が生じるとその異常発熱により突起部
を有する形状記憶合金が加熱され、該形状記憶合金の突
起部が電気接続部外に突出しコロナを発生ずる。このコ
ロナを音や目視により監視することにより電気接続部の
異常を極めて簡単且つ確実に検知し得る。[Function] When an abnormality occurs in the electrical connection, the shape memory alloy having the protrusion is heated by the abnormal heat generation, and the protrusion of the shape memory alloy protrudes outside the electrical connection and generates corona. By monitoring this corona by sound or visual inspection, abnormalities in electrical connections can be detected extremely easily and reliably.
以下、本発明の実施例を図面により説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明方法の一実施例を示す説明図、第２図は
第１図のＸ−Ｘ線断面図、第３図は本発明方法に使用す
る形状記憶合金の一実施例を示す説明図で、図において
ｌは平板導体１ａ、１ｂを複数本の締付ボルト２により
接続した電気接続部、３は基部端にボルト挿通孔４を穿
設したＴｉ−Ｎｉ合金、篩−Ｃｄ合金、Ｃｕ−Ｚｎ−＾
１合金等からなる厚さ０．１ｍｍ〜１．ＯＩ程度の板状
の形状記憶合金で、該形状記憶合金３には突起部３ａが
形成されている。この形状記憶合金３は上記電気接続部
１にその締付ボルト２を１〜２本利用する等して取り付
けられている。Fig. 1 is an explanatory diagram showing one embodiment of the method of the present invention, Fig. 2 is a sectional view taken along the line X-X of Fig. 1, and Fig. 3 is an illustration of an embodiment of the shape memory alloy used in the method of the present invention. This is an explanatory diagram. In the figure, l is an electrical connection part in which flat plate conductors 1a and 1b are connected by a plurality of tightening bolts 2, 3 is a Ti-Ni alloy with a bolt insertion hole 4 bored at the base end, and a sieve-Cd alloy. , Cu-Zn-^
1 alloy, etc., with a thickness of 0.1 mm to 1. The shape memory alloy 3 is a plate-shaped shape memory alloy of approximately OI, and a protrusion 3a is formed on the shape memory alloy 3. This shape memory alloy 3 is attached to the electrical connection portion 1 using one or two tightening bolts 2 thereof.
なお、形状記憶合金３の取り付けに際しては、突起部３
ａが電気接続部１から突出しないように取り付ける。Note that when attaching the shape memory alloy 3, the protrusion 3
Attach so that a does not protrude from the electrical connection part 1.
而して、電気接続部１が異常発熱すると、その熱により
所定の形状に折り曲げて電気接続部１に取り付けた形状
記憶合金３が加熱されて形状復帰し、第２図に示すよう
に突起部３ａが電気接続部１の外方に突出する。突起部
３ａが電気接続部１の外方に突出すると突起部３ａから
コロナが発生する。When the electrical connection part 1 generates abnormal heat, the shape memory alloy 3 bent into a predetermined shape and attached to the electrical connection part 1 is heated and returns to its shape, causing the protrusion to form as shown in FIG. 3a protrudes outward from the electrical connection part 1. When the protrusion 3a protrudes outward from the electrical connection part 1, corona is generated from the protrusion 3a.
このコロナを音により或いは目視により監視することに
より、電気接続部１の異常を極めて簡単且つ確実に検知
することができる。By monitoring this corona by sound or visually, an abnormality in the electrical connection part 1 can be detected extremely easily and reliably.
なお、以上は板状の形状記憶合金３を電気接続部１に取
り付けて電気接続部１の温度検知を行う方法について図
示説明したが、本発明方法はこれに限定されるものでは
なく、第５図に示すように電気接続部１の温度が一定温
度値以上になると形状復帰する線状の形状記憶合金３を
、その端末部を黄銅等からなる座金５に取り付け、第４
図に示すように常温下で輪状に折り曲げるなど所定形状
に折り曲げて電気接続部１に取り付け、電気接続部１の
異常発熱により形状復帰する形状記憶合金３の突起部３
ａから放出されるコロナにより電気接続部１の異常を検
知するようにしてもよい。In addition, although the method of attaching the plate-shaped shape memory alloy 3 to the electrical connection part 1 and detecting the temperature of the electrical connection part 1 has been illustrated and explained above, the method of the present invention is not limited to this. As shown in the figure, a linear shape memory alloy 3, which returns to its shape when the temperature of the electrical connection part 1 reaches a certain temperature value or higher, is attached at its end to a washer 5 made of brass or the like.
As shown in the figure, the protrusion 3 of the shape memory alloy 3 is bent into a predetermined shape such as a ring at room temperature and attached to the electrical connection part 1, and returns to its shape when the electrical connection part 1 generates abnormal heat.
An abnormality in the electrical connection part 1 may be detected by the corona emitted from a.
また、本発明方法は平板導体１ａ、１ｂを複数本のボル
ト２により接続した電気接続部１に限らず、各種電気接
続部の温度検知方法に適用しうるちのであり、さらに、
形状記憶合金３の先端３ａはコロナが発生し易い形状で
あればよく特に限定されるものではない。さらにまた、
形状記憶合金１の電気接続部への取り付けは、ボルトや
ピン等任意の手段を適用できる。Furthermore, the method of the present invention is applicable not only to the electrical connection section 1 in which the flat conductors 1a and 1b are connected by a plurality of bolts 2, but also to temperature detection methods for various electrical connection sections.
The tip 3a of the shape memory alloy 3 is not particularly limited as long as it has a shape that allows corona to easily occur. Furthermore,
The shape memory alloy 1 can be attached to the electrical connection portion by any means such as bolts or pins.
本発明方法によれば上述のように、突起部３ａを有する
形状記憶合金３が電気接続部１の異常加熱により加熱さ
れて形状復帰し、その突起部３ａに発生するコロナを、
音或いは目視により監視し電気接続部の異常を検知する
という極めて簡単な方法で、電気接続部の異常を確実に
検知することができ、特に本発明はコロナを利用してい
るので高所、夜間等各種条件下にある電気接続部の異常
を橿め４゜
て簡単且つ確実に検知しうるという優れた利点がある。According to the method of the present invention, as described above, the shape memory alloy 3 having the protrusion 3a is heated by the abnormal heating of the electrical connection part 1 and returns to its shape, and the corona generated on the protrusion 3a is
Abnormalities in electrical connections can be reliably detected using an extremely simple method of monitoring them visually or by sound.In particular, since the present invention uses corona, it can be used at high places or at night. It has the excellent advantage of being able to easily and reliably detect abnormalities in electrical connections under various conditions such as within 4 degrees.
第１図は本発明方法の一実施例を示す説明図、第２図は
第１図のＸ−Ｘ線断面図、第３図は本発明方法に使用す
る形状記憶合金の一実施例を示す説明図、第４図及び第
５図は本発明方法の他の実施例を示す説明図と形状記憶
合金を示す説明図である。Fig. 1 is an explanatory diagram showing one embodiment of the method of the present invention, Fig. 2 is a sectional view taken along the line X-X of Fig. 1, and Fig. 3 is an illustration of an embodiment of the shape memory alloy used in the method of the present invention. The explanatory drawings, FIG. 4, and FIG. 5 are explanatory drawings showing other embodiments of the method of the present invention and explanatory drawings showing a shape memory alloy.
Claims (1)
て電気接続部に取り付け、電気接続部の温度が一定温度
値以上になったとき上記形状記憶合金の形状復帰により
該形状記憶合金の突起部にコロナを発生させ、該コロナ
により電気接続部の異常を検知することを特徴とする電
気接続部の温度検知方法。A shape memory alloy having a protrusion is bent into a predetermined shape and attached to an electrical connection part, and when the temperature of the electrical connection part reaches a certain temperature value or more, the shape memory alloy returns to its shape and the protrusion part of the shape memory alloy is bent. 1. A method for detecting temperature of an electrical connection, comprising generating corona and detecting an abnormality in the electrical connection using the corona.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21813688A JPH0270218A (en) | 1988-08-31 | 1988-08-31 | Temperature detecting method at electrical joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21813688A JPH0270218A (en) | 1988-08-31 | 1988-08-31 | Temperature detecting method at electrical joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0270218A true JPH0270218A (en) | 1990-03-09 |
| JPH0524726B2 JPH0524726B2 (en) | 1993-04-08 |
Family
ID=16715201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21813688A Granted JPH0270218A (en) | 1988-08-31 | 1988-08-31 | Temperature detecting method at electrical joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0270218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236747A (en) * | 2014-10-17 | 2014-12-24 | 国家电网公司 | Warning method and self-energy taking warning indicator for overheating of electric system joints |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6043093B2 (en) * | 2012-05-25 | 2016-12-14 | 株式会社ソミック石川 | Ball joint |
-
1988
- 1988-08-31 JP JP21813688A patent/JPH0270218A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236747A (en) * | 2014-10-17 | 2014-12-24 | 国家电网公司 | Warning method and self-energy taking warning indicator for overheating of electric system joints |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0524726B2 (en) | 1993-04-08 |
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