JPH0524726B2 - - Google Patents
Info
- Publication number
- JPH0524726B2 JPH0524726B2 JP21813688A JP21813688A JPH0524726B2 JP H0524726 B2 JPH0524726 B2 JP H0524726B2 JP 21813688 A JP21813688 A JP 21813688A JP 21813688 A JP21813688 A JP 21813688A JP H0524726 B2 JPH0524726 B2 JP H0524726B2
- Authority
- JP
- Japan
- Prior art keywords
- electrical connection
- memory alloy
- shape memory
- connection part
- shape
- 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
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 25
- 230000005856 abnormality Effects 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- 229910017773 Cu-Zn-Al Inorganic materials 0.000 description 1
- 229910004337 Ti-Ni Inorganic materials 0.000 description 1
- 229910011209 Ti—Ni Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Fire-Detection Mechanisms (AREA)
- Emergency Alarm Devices (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Cable Accessories (AREA)
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
があつた。
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
力をもつ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つ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-mentioned 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 This method solves the problems of the conventional method by generating corona in the protrusions of the shape memory alloy by restoring the shape of the alloy, and detecting abnormalities in electrical connections using the corona.
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
ナを発生する。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。
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。
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１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、Au−Cd合金、Cu−Zn−Al合金等からな
る厚さ0.1mm〜1.0mm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。
Embodiments of the present invention will be described below with reference to the drawings.
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 diagram, 1 indicates an electrical connection section in which flat conductors 1a and 1b are connected by a plurality of tightening bolts 2;
3 is Ti-Ni with bolt insertion hole 4 drilled at the base end
The shape memory alloy 3 is a plate-shaped shape memory alloy made of alloy, Au-Cd alloy, Cu-Zn-Al alloy, etc. and has a thickness of about 0.1 mm to 1.0 mm, and the shape memory alloy 3 has a projection 3a formed therein. This shape memory alloy 3 is the electrical connection part 1
It is attached by using one or two of the tightening bolts 2.
なお、形状記憶合金３の取り付けに際しては、
突起部３ａが電気接続部１か突出しないように取
り付ける。 In addition, when installing the shape memory alloy 3,
Attach so that the protrusion 3a 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. The protrusion 3a is the electrical connection part 1
When the protrusion 3a protrudes outward, 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３ａ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 that returns to its shape when the temperature of the electrical connection part 1 exceeds a certain temperature value is attached at its end to a washer 5 made of brass or the like. The abnormality of the electrical connection part 1 is caused by the corona emitted from the protrusion 3a of the shape memory alloy 3, which is bent into a predetermined shape such as a ring shape at room temperature and attached to the electrical connection part 1, and returns to its shape due to abnormal heat generation in the electrical connection part 1. may be detected.
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
ものであり、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 the temperature detection method of various electrical connection sections. tip 3a of
is not particularly limited as long as it has a shape that allows corona to easily occur. Furthermore, any means such as bolts or pins can be used to attach the shape memory alloy 1 to the electrical connection part.
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
を極め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 protrusion 3a
The shape memory alloy 3 having a
Abnormalities in electrical connections can be reliably detected by an extremely simple method of detecting abnormalities in electrical connections by monitoring the corona generated by sound or visually. This has the advantage that abnormalities in electrical connections under various conditions such as at high places or at night can be detected extremely easily and reliably.
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。
１：電気接続部、２：締付ボルト、３：形状記
憶合金、３ａ：突起部。
FIG. 1 is an explanatory diagram showing an embodiment of the method of the present invention;
FIG. 2 is a cross-sectional view taken along the line X-X in FIG. FIG. 2 is an explanatory diagram showing an example of the present invention and an explanatory diagram showing a shape memory alloy. 1: Electrical connection part, 2: Tightening bolt, 3: Shape memory alloy, 3a: Projection part.
Claims (1)
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つ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。1. 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 the temperature of an electrical connection, comprising: generating a 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 JPH0270218A (en) | 1990-03-09 |
| JPH0524726B2 true 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 |
|---|---|---|---|---|
| CN104169594A (en) * | 2012-05-25 | 2014-11-26 | 株式会社索密克石川 | ball joint |
Families Citing this family (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 |
-
1988
- 1988-08-31 JP JP21813688A patent/JPH0270218A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104169594A (en) * | 2012-05-25 | 2014-11-26 | 株式会社索密克石川 | ball joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0270218A (en) | 1990-03-09 |
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