JP2835084B2 - Elastic joint equipment - Google Patents
Elastic joint equipmentInfo
- Publication number
- JP2835084B2 JP2835084B2 JP1181523A JP18152389A JP2835084B2 JP 2835084 B2 JP2835084 B2 JP 2835084B2 JP 1181523 A JP1181523 A JP 1181523A JP 18152389 A JP18152389 A JP 18152389A JP 2835084 B2 JP2835084 B2 JP 2835084B2
- Authority
- JP
- Japan
- Prior art keywords
- conductive layer
- flange
- elastic joint
- joint
- joint device
- 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
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Joints Allowing Movement (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、絶縁材料で造られた器材本体の内部に、製
造のさい生成されるか或は使用中に経年劣化で形成され
るピンホールなどの内部異状を、検出可能とした絶縁材
料からなる伸縮継手などの伸縮性継手器材に関するもの
である。Description: FIELD OF THE INVENTION The present invention relates to a pinhole formed in an equipment body made of an insulating material, which is generated during manufacture or aged during use. The present invention relates to an elastic joint device such as an elastic joint made of an insulating material capable of detecting an internal abnormality such as an internal abnormality.
（従来の技術） 従来、絶縁材料からなる伸縮継手、可撓管継手、ドレ
ッチングスリーブ、ホース、ベルト形伸縮継手などの伸
縮性継手器材は、製造したのち外観検査、寸法検査、伸
縮試験、水圧試験、真空試験などを中心にした完成品検
査を行って、合格したものが出荷されている。(Prior art) Conventionally, elastic joints such as expansion joints, flexible pipe joints, dretching sleeves, hoses, and belt-type expansion joints made of an insulating material are manufactured, and thereafter, appearance inspection, dimensional inspection, expansion / contraction test, hydraulic pressure Finished product inspections, mainly tests and vacuum tests, are performed, and those that have passed are shipped.
（発明が解決しようとする課題） 絶縁材料からなる伸縮性継手器材は、製造のさい使用
中に経年劣化を早める原因の一つになるピンホールが内
部に発生しないように種々工夫されて造られている。(Problems to be Solved by the Invention) Stretchable joint devices made of insulating materials are manufactured by various means so that pinholes, which are one of the causes of accelerating aging during use, do not occur inside the devices. ing.
しかしながら、内部にピンホールが絶対存在しないも
のを造ると云うことは中々難しいことであり、そのうえ
上記の完成品検査では内部に存在するピンホールを検出
することができないので、どうしてもピンホールの存在
した製品が出荷する製品を中に混入することは否定でき
ない。そのため製品の経年劣化が早められて思わない事
故を発生する恐れがある。However, it is quite difficult to make a pinhole that does not exist inside, and it is impossible to detect the pinhole that exists inside in the above-mentioned finished product inspection. It cannot be denied that the product is mixed with the product to be shipped. For this reason, there is a risk that an unexpected accident may occur because the aging of the product is accelerated.
尚、継手器材の内部に存在するピンホールを検出する
機器として、完成品検査の段階で使用されるものが現在
ない。It should be noted that there is no device currently used at the stage of finished product inspection as a device for detecting pinholes existing inside the joint equipment.
（課題を解決するための手段） 本発明は、従来のこのような問題点に着目してなされ
たものであって、絶縁材料からなる器材本体と接続部の
表面または内部に導電層を形成することにより、内部に
存在するピンホールなどを検出可能として、上記問題点
を解決することを目的としている。(Means for Solving the Problems) The present invention has been made by focusing on such a conventional problem, and forms a conductive layer on the surface or inside of a connection portion with an equipment body made of an insulating material. Accordingly, an object of the present invention is to solve the above-described problem by enabling detection of a pinhole or the like existing inside.
本発明は、合成ゴムからなる絶縁材料で形成された器
材本体と接続部の内部または表面の所要個所に、合成ゴ
ムに所要量の電気良導体の微粉などを混合した導電層を
形成し、絶縁材料と導電層に外部からの電気的接続を可
能としたことを特徴とする伸縮性継手器材である。The present invention provides a conductive layer in which synthetic rubber is mixed with a required amount of fine powder of an electric conductor, or the like, at a predetermined place inside or on a surface of a device body and a connection portion formed of an insulating material made of synthetic rubber. And an electrical connection from the outside to the conductive layer.
（作用） 伸縮性継手器材は、絶縁材料からなる器材本体の接続
部の表面または内部に形成された導電層に一定電圧を印
加して、絶縁材料を挟んで導導層と対向する面にピンホ
ールテスターを接触させると、万一ピンホールの存在す
る箇所ではピンホールテスターに電流が流れて、適宜な
装置で表示されてピンホールの存在が検出される。(Effect) The elastic joint device applies a constant voltage to the conductive layer formed on or in the connection portion of the connecting portion of the device main body made of an insulating material, and a pin is attached to the surface facing the conductive layer with the insulating material interposed therebetween. If the hole tester is brought into contact, a current flows through the pinhole tester at a location where the pinhole exists, and the presence of the pinhole is detected and displayed by an appropriate device.
（実施例） 本発明を第１図に示す一実施例に基づいて以下詳述す
る。１は継手本体２の中央に伸縮機能を有する内側が中
空になった膨出部３と、継手本体２の両端に突出した接
続部のフランジ４とを設けた、絶縁材料のクロロプレン
５で形造された伸縮継手、６は継手本体２の肉厚の中心
より伸縮継手１の内側面７に片寄って継手本体２の全面
に亘って形成された、クロロプレンに所要量のカーボン
ブラックを混入して導電性を附与された所要厚の本体導
電層６′と、フランジ４の肉厚の中心より外側面８に片
寄ってフランジ４の全面に亘って形成された、本体導電
層６′と同一材料からなる本体導電層６′に接続された
フランジ導電層６″とからなる導電層である。(Example) The present invention will be described in detail below based on an example shown in FIG. Reference numeral 1 denotes a chloroprene 5 made of an insulating material provided with a bulged portion 3 having a hollow inside and having a telescopic function at the center of the joint body 2 and flanges 4 of connection portions protruding at both ends of the joint body 2. The expanded joint 6 is formed by mixing a required amount of carbon black into chloroprene, which is formed over the entire surface of the joint body 2, offset from the center of the thickness of the joint body 2 toward the inner side surface 7 of the expansion joint 1, and is conductive. And a main body conductive layer 6 'having a required thickness and the same material as the main body conductive layer 6' formed over the entire surface of the flange 4 offset from the center of the thickness of the flange 4 toward the outer side surface 8. And a flange conductive layer 6 ″ connected to the main body conductive layer 6 ′.
９は両フランジ４、４の内側面に付設された、フラン
ジ４の機械的強度を高めるための金属からなる固持リン
グ、10はフランジ４及び固持リング９を挿通して穿設さ
れたボルト孔で、固持リング９の円周に複数個設けられ
ている。Reference numeral 9 denotes a fixing ring made of metal for increasing the mechanical strength of the flanges 4 attached to the inner surfaces of the flanges 4 and 4, and reference numeral 10 denotes a bolt hole formed through the flange 4 and the fixing ring 9. Are provided on the circumference of the holding ring 9.
尚、フランジ導電層６″がフランジ４の端部に露出し
ているので、この露出箇所を介して内部の導電層６′に
外部から電気的接続をすることが可能になっている。又
導電層６はクロロプレン５を主材としているので、伸縮
継手１を形造するさい、内側クロロプレン５′、導電層
６、外側クロロプレン５″とを積層して熱処理すること
により三者を密着或は融合させて一体化させることがで
きる。Since the flange conductive layer 6 "is exposed at the end of the flange 4, it is possible to make an external electrical connection to the internal conductive layer 6 'through this exposed portion. Since the layer 6 is mainly composed of chloroprene 5, when forming the expansion joint 1, the inner chloroprene 5 ′, the conductive layer 6, and the outer chloroprene 5 ″ are laminated and heat-treated to adhere or fuse the three. And can be integrated.
この伸縮継手１は、従来の伸縮継手と同様にして、接
続する相手例えばパイプ11の端部に固着されたフランジ
12を介して、フランジ４をボルト締めで固定して使用さ
れる。The expansion joint 1 is made of a flange fixed to an end of a pipe 11 to be connected in the same manner as a conventional expansion joint.
The flange 4 is used by fixing it with bolts via 12.
この場合、伸縮継手１は、継手本来２及びフランジ４
の全体に亘って内部に、外部から電気的接続可能な導電
層６を形成されているので、フランジ４のフランジ導電
層６″の露出箇所13に電源を接続し導電層６に所要電圧
を印加して、ピンホールテスター14を内・外側クロロプ
レン５′、５″の外面に当接させる（外面から当接させ
る場合を図示）と、若しピンホールが存在すると電流が
流れて警報器或いは表示燈などの適宜な表示装置15によ
り表示されるので、ピンホールの存在が検出される。In this case, the expansion joint 1 is composed of the joint 2 and the flange 4.
Since the conductive layer 6 which can be electrically connected from the outside is formed inside the entire structure, a power supply is connected to the exposed portion 13 of the flange conductive layer 6 ″ of the flange 4 to apply a required voltage to the conductive layer 6. Then, when the pinhole tester 14 is brought into contact with the outer surfaces of the inner and outer chloroprenes 5 'and 5 "(the case where they are brought into contact from the outer surface is shown), if a pinhole exists, an electric current flows and an alarm or a display is displayed. Since the display is made by an appropriate display device 15 such as a light, the presence of a pinhole is detected.
この検査は、伸縮継手１を使用中にもできるので、経
年劣化による異状を発見できて、致命的な事故を未然に
防ぐことができる。さらに伸縮継手１を導電性液体の移
送に使用されるときは、導電性液体に電圧を印加するこ
とにより、内側面のクロロプレン５′欠陥異状も検出す
ることができる。Since this inspection can be performed even while the expansion joint 1 is in use, abnormalities due to aging can be found, and a fatal accident can be prevented. Further, when the expansion joint 1 is used for transferring the conductive liquid, by applying a voltage to the conductive liquid, it is possible to detect the defect of the chloroprene 5 ′ defect on the inner surface.
本発明は第２図に示す他の実施例に基づいて以下詳述
する。16は伸縮性を与えるために外側を波形状に形成し
たスリーブ本体17と、該スリーブ本体17の両端に突設し
たフランジ18とを設けた、絶縁材料のクロロプレン５で
形造された伸縮性ドレッチングスリーブ、19はスリーブ
本体17の内側面20にスリーブ本体17の全面に亘って形成
された、クロロプレンに所要量のカーボンブラックを混
入して導電性を附与された所要厚の本体導電層19′と、
フランジ18の肉厚の中心附近にフランジ18の全面に亘っ
て形成された、本体導電層19′に接続されたフランジ導
電層19″とからなる導電層である。The present invention will be described in detail below based on another embodiment shown in FIG. Reference numeral 16 denotes a stretchable dress formed of chloroprene 5 made of an insulating material, provided with a sleeve body 17 whose outer side is formed in a wavy shape to provide stretchability, and flanges 18 protruding from both ends of the sleeve body 17. Ching sleeve 19 is formed on inner surface 20 of sleeve body 17 over the entire surface of sleeve body 17, and has a required thickness of body conductive layer 19 provided with conductivity by mixing a required amount of carbon black with chloroprene. 'When,
This is a conductive layer including a flange conductive layer 19 ″ connected to the main body conductive layer 19 ′ and formed over the entire surface of the flange 18 near the center of the thickness of the flange 18.
21は両フランジ18、18の内側面に付設された、フラン
ジ18の機械的強度を高めるための金属からなるフランジ
リング、22はフランジ18及びフランジリング21を挿通し
て穿設されたボルト孔でフランジリング21の円周に複数
個設けられている。21 is a flange ring made of metal for increasing the mechanical strength of the flange 18 attached to the inner surface of both flanges 18 and 18, and 22 is a bolt hole penetrated through the flange 18 and the flange ring 21. A plurality of flange rings 21 are provided on the circumference.
尚、フランジ導電層19″がフランジ18の端部に露出し
ているので、この露出箇所を介して内側の導電層19′に
外部から電気的接続をすることが可能になっている。又
導電層19はクロロプレン５を主材としているので、ドレ
ッチングスリーブ16を形造したさい、外側のクロロプレ
ン５と密着或は融合させて一体化させることができる。Since the flange conductive layer 19 "is exposed at the end of the flange 18, it is possible to make an external electrical connection to the inner conductive layer 19 'through the exposed portion. Since the layer 19 is mainly composed of chloroprene 5, it can be integrated with the outer chloroprene 5 by being adhered or fused thereto when forming the draining sleeve 16.
この伸縮性ドレッチングスリーブ16は、従来のドレッ
チングスリーブと同様にして使用される。This stretchable draining sleeve 16 is used in the same manner as a conventional draining sleeve.
この場合、ドレッチングスリーブ16は、一実施例の伸
縮継手１と同様にして、スリーブ16に存在するピンホー
ルを検出することがきる。In this case, the draining sleeve 16 can detect a pinhole existing in the sleeve 16 in the same manner as the expansion joint 1 of the embodiment.
上記の両実施例において、伸縮継手１及びドレッチン
グスリーブ16は、継手本体２及びスリーブ本体17の器材
本体とフランジ４、18の絶縁材料としてクロロプレン５
を使用したが、この代わりに同等の特性を有する他の合
成ゴムを使用しても良く、さらに使用目的によっては適
当に加硫などの処理された天然ゴムを使用してもよい。In both of the above embodiments, the expansion joint 1 and the draining sleeve 16 are made of chloroprene 5 as an insulating material for the joint body 2 and the equipment body of the sleeve body 17 and the flanges 4 and 18.
Was used, but other synthetic rubbers having the same properties may be used instead, and depending on the purpose of use, natural rubber appropriately treated by vulcanization or the like may be used.
又導電層５、19はクロロプレン５にカーボンブラック
の所要量を混入して導電層を附与したが、カーボンブラ
ックの代わりに銅などの電気良導体の微粉、細片、薄片
などの何れかを混入して導電性を附与するようにしても
良い。さらに、クロロプレン５に電気良導体を混入して
導電性を附与する代わりに、導電性材料例えば電気良導
体の金属細線からなる金網、帯状体、或は炭素繊維から
なる編状材、補強布などをクロロプレン５に層状に配置
して導電層５、19を形成しても良い。For the conductive layers 5 and 19, a required amount of carbon black was mixed with chloroprene 5 to provide a conductive layer, but instead of carbon black, any one of fine powder, strips, and flakes of an electric conductor such as copper was mixed. Alternatively, conductivity may be imparted. Further, instead of adding an electric conductor to the chloroprene 5 and imparting conductivity, a conductive material such as a wire mesh, a band, or a knitted material made of carbon fiber, a reinforcing cloth, or the like made of a fine metal wire of the electric conductor is used. The conductive layers 5 and 19 may be formed on the chloroprene 5 in a layered manner.
又伸縮継手１の本体導電層６′は、継手本体２の肉厚
の中心より伸縮継手１の内側面７に片寄って継手本体２
の全面に亘って形成し、フランジ導電層６″はフランジ
４の肉厚の中心より外側面８に片寄ってフランジ４の全
面に亘って形成したが、使用目的によりこれに代わっ
て、本体導電層６′を継手本体２の肉厚の中心附近或は
内側面７に形成したり、フランジ導電層６″をフランジ
４の肉厚の中心附近に形成しても良く、さらにフランジ
導電層６″を片側のみにしたり、或はフランジ４の全面
でなしに固持リング９に電気的接続ができるように形成
したり、或は両方をなくして本体導電層６′と接続され
た導電層を継手本体２の適宜な箇所に外部から電気的接
続が可能なように露出させても良い。The main body conductive layer 6 ′ of the expansion joint 1 is offset from the center of the thickness of the joint main body 2 toward the inner side surface 7 of the expansion joint 1.
The flange conductive layer 6 ″ is formed over the entire surface of the flange 4 offset from the center of the thickness of the flange 4 toward the outer side surface 8. However, depending on the purpose of use, the main body conductive layer 6 ″ may be replaced. 6 'may be formed near the center of the thickness of the joint body 2 or on the inner surface 7, the conductive layer 6 "may be formed near the center of the thickness of the flange 4, and the conductive layer 6" may be further formed. The conductive layer connected to the main body conductive layer 6 ′ may be formed on one side only, or may be formed so as to be able to make an electrical connection to the fixing ring 9 without the whole surface of the flange 4, or may be formed without the both sides. May be exposed so that an electrical connection can be made from the outside at an appropriate location.
又ドレッチングスリーブ16の本体導電層19′はスリー
ブ本体17の内側面20に形成したが、この代わりにスリー
ブ本体17の内部に形成するようにしても良く、さらにフ
ランジ導電層19″は使用目的により図面に示した方法の
代わりに一実施例の場合のフランジ導電層６″と同様な
方法を構じても良い。Although the main body conductive layer 19 'of the draining sleeve 16 is formed on the inner side surface 20 of the sleeve main body 17, it may be formed inside the sleeve body 17 instead. Therefore, instead of the method shown in the drawings, a method similar to that of the flange conductive layer 6 ″ in the embodiment may be used.
又一実施例では伸縮継手１、他の実施例では伸縮性ド
レッチングスリーブ16について記載したが、これらと同
様な伸縮性継手器材である、可撓管継手、ホースベルト
形伸縮継手等に応用できることは論を俟たない。In one embodiment, the expansion joint 1 is described. In the other embodiment, the expansion and contraction sleeve 16 is described. However, the present invention can be applied to similar expansion joint equipment such as a flexible pipe joint and a hose belt type expansion joint. Is without controversy.
（発明の効果） （１）出荷前に経年劣化を早めるピンホールを確実に検
出して除外するので、製品の品質向上を計り、耐用寿命
を長くすることができる。(Effects of the Invention) (1) Since pinholes that accelerate deterioration over time are surely detected and excluded before shipment, the quality of products can be improved and the service life can be extended.
（２）経年劣化を早めるピンホールのない製品を提供す
るので、事故の発生を確実に防止し、安全面からの信頼
性が極めて高い。(2) Since a product without pinholes that accelerates deterioration over time is provided, accidents are reliably prevented, and safety reliability is extremely high.
（３）製造が容易なうえ特別な材料も使用していないの
で、従来のものと余り変わらない価格で提供できる。(3) Since it is easy to manufacture and does not use any special materials, it can be provided at a price not much different from that of the conventional one.
（４）使用中にも検査ができるので、経年劣化による異
状を発見できて致命的な事故を未然に防ぐことができ
る。(4) Since the inspection can be performed even during use, an abnormality due to aging can be detected, and a fatal accident can be prevented.
第１図は本発明の一実施例を示す断面図、第２図は本発
明の他の実施例を示す断面図である。 １……伸縮継手、２……継手本体 ４、18……フランジ、５、５′、５″……クロロプレン ６、19……導電層、６′、９′……本体導電層 ６″、19″……フランジ導電層、７、30……内側面 16……伸縮性ドレッチングスリーブ 17……スリーブ本体FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view showing another embodiment of the present invention. 1 ... expansion joint, 2 ... joint body 4, 18 ... flange, 5, 5 ', 5 "... chloroprene 6, 19 ... ... conductive layer, 6', 9 '... body conductive layer 6", 19 ″… Flange conductive layer, 7, 30 …… Inner side 16 …… Elastic draining sleeve 17 …… Sleeve body
Claims (5)
材本体と接続部の内部または表面の所要個所に、合成ゴ
ムに所要量の電気良導体の微粉などを混合した導電層を
形成し、絶縁材料と導電層に外部からの電気的接続を可
能としたことを特徴とする伸縮性継手器材。A conductive layer in which synthetic rubber is mixed with a required amount of fine powder of an electric conductor and the like is formed at a predetermined portion inside or on a surface of a connecting portion and an equipment body formed of an insulating material made of synthetic rubber. An elastic joint device, wherein an external electrical connection is made possible between the material and the conductive layer.
を形成したことを特徴とする特許請求の範囲第１項記載
の伸縮性継手器材。2. The elastic joint device according to claim 1, wherein the conductive layer is formed by arranging a material of an electric conductor in a layered manner.
た内部に、全面に亘って導電層を形成したことを特徴と
する特許請求の範囲第１項または第２項記載の伸縮性継
手器材。3. The elasticity according to claim 1, wherein a conductive layer is formed over the entire surface of the equipment body, which is offset from the center of the thickness of the equipment body toward the inner side surface. Fitting equipment.
続部内部に形成した導電層を、器材本体に形成された導
電層に接続したことを特徴とする特許請求の範囲第１項
乃至第３項の何れかに記載の伸縮性継手器材。4. The apparatus according to claim 1, wherein a conductive layer formed inside the flange-shaped connection portion that can be electrically connected from the outside is connected to a conductive layer formed on the equipment body. Item 4. The elastic joint device according to any one of items 3.
形成したことを特徴とする特許請求の範囲第１項乃至第
４項の何れかに記載の伸縮性継手器材。5. The elastic joint device according to claim 1, wherein a conductive layer is formed on the entire inner surface of the device main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1181523A JP2835084B2 (en) | 1989-07-13 | 1989-07-13 | Elastic joint equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1181523A JP2835084B2 (en) | 1989-07-13 | 1989-07-13 | Elastic joint equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0348093A JPH0348093A (en) | 1991-03-01 |
| JP2835084B2 true JP2835084B2 (en) | 1998-12-14 |
Family
ID=16102253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1181523A Expired - Lifetime JP2835084B2 (en) | 1989-07-13 | 1989-07-13 | Elastic joint equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2835084B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4645959B2 (en) * | 2006-07-25 | 2011-03-09 | 株式会社昭和螺旋管製作所 | Anti-vibration pipe fittings |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57112933U (en) * | 1981-01-06 | 1982-07-13 | ||
| JPS58135932A (en) * | 1982-02-09 | 1983-08-12 | Mitsubishi Heavy Ind Ltd | Detector for damage of expansion joint made of rubber |
-
1989
- 1989-07-13 JP JP1181523A patent/JP2835084B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0348093A (en) | 1991-03-01 |
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