JPH03223593A - Connecting structure of anticorrosive metal pipe - Google Patents
Connecting structure of anticorrosive metal pipeInfo
- Publication number
- JPH03223593A JPH03223593A JP2019896A JP1989690A JPH03223593A JP H03223593 A JPH03223593 A JP H03223593A JP 2019896 A JP2019896 A JP 2019896A JP 1989690 A JP1989690 A JP 1989690A JP H03223593 A JPH03223593 A JP H03223593A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- corrosion
- adhesive
- metal pipe
- joint
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 58
- 238000005260 corrosion Methods 0.000 claims abstract description 26
- 239000000853 adhesive Substances 0.000 claims abstract description 23
- 230000001070 adhesive effect Effects 0.000 claims abstract description 23
- 230000007797 corrosion Effects 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 229920003023 plastic Polymers 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 10
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業」二の利用分野〉
本発明は金属管の内外面に樹脂被覆を施した防食金属管
の接続構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industry> Second Field of Application The present invention relates to a connection structure for corrosion-resistant metal tubes in which the inner and outer surfaces of the metal tubes are coated with resin.
〈従来の技術〉
金属管、例えば鋼管の内・外面に樹脂被覆を施しｆ、、
： ＩＩＪ７食金属管（以１：、内外面被覆金属管とい
う）を１ｔ［゛に、１って接続する場合、従来において
は、第４図示すように、継手Ａ′として、接合面にテー
バねし１１′を切削したねじ込み弐町鍛鈷鉄製継手１′
に硬質塩化ビニル樹脂外被２′を成形したものをＪＩＩ
ｕＳ、接続現場で内外面被覆金属管端部Ｐ。<Prior art> Metal pipes, such as steel pipes, are coated with resin on their inner and outer surfaces.
: When connecting IIJ7 metal pipes (hereinafter referred to as inner and outer coated metal pipes) to 1t [゛, 1], conventionally, as shown in Fig. 4, a taper is attached to the joint surface as joint A'. Threaded Nimachi forged iron joint 1' with thread 11' cut
A hard vinyl chloride resin jacket 2' is molded onto the JII
uS, inner and outer coated metal tube end P at connection site.
の外面に雄ねじ３′を切削力ＩＩ １． Ｌ、この雄ね
じ部３′を−［−記継手へ′のテーバねし１１′に螺合
し゛（いる。Cutting force II 1. L, this male threaded portion 3' is screwed into the taper thread 11' of the joint.
しかしながら１．ｌ−記螺合界面への水の侵入による１
５食を防市するため、上記内外面被覆金属管端部の切削
ねしは準ねじ相当の高精度のものにする必要があり、か
かる作業を現場で行うことは著しく困難であって、熟練
者に依存せざるを得ない。However, 1. l-1 due to water intrusion into the threaded interface
5. In order to prevent corrosion, the cutting screws at the ends of the inner and outer coated metal tubes must be made with high precision equivalent to semi-threaded screws, and it is extremely difficult to carry out such work on site, and requires a skilled worker. have no choice but to depend on others.
ぐ解決しようとする課題〉
ところで、プラスチック管、特に塩化ビニル管の接続に
おいては接着剤を使用する方法が広く用いられており、
上記内外面被覆金属管においても、接合面となる管端部
表面が樹脂面であることから、接着剤を使用する方法の
施用が考えられる。By the way, the method of using adhesive is widely used to connect plastic pipes, especially PVC pipes.
Also in the above-mentioned inner and outer coated metal pipes, since the end surface of the pipe, which is the joint surface, is a resin surface, it is conceivable to apply a method using an adhesive.
而るに、従来の接着剤を用いる接合法、いわゆる′１゛
８接合法は、管の端部外面に接着剤を塗り、一定のデー
パの付いた受１」を有する”ｒ’ｓｍ手の受１１に、前
記の管端部を差込む方法である。従って、従来の′１゛
Ｓ接合法においては、プラスチック管端部の外面のみを
継手と接着するだけであり、かがる接合法を単に上記の
内外面被覆金属管の接合に適用しても、管端面の金属面
が輸送液体によって腐食され易く、問題がある。However, in the conventional bonding method using adhesive, the so-called ``1゛8 bonding method'', adhesive is applied to the outer surface of the end of the tube, and a ``r'sm type'' bonding method, which has a receiver 1 with a certain taper, is used. This is a method of inserting the above-mentioned pipe end into the receiver 11. Therefore, in the conventional '1゛S joining method, only the outer surface of the plastic pipe end is bonded to the fitting, and the overcast joining method Even if the method is simply applied to joining the above-mentioned inner and outer coated metal tubes, there is a problem in that the metal surfaces at the end surfaces of the tubes are easily corroded by the transport liquid.
而して、継手に管端部内外面を設け、この挿入講に内外
面被覆金属管端部を挿入して、管端面の金属面を当該挿
入涌の奥端に納めた状態で管端部外面Ｊｒｊひに内面の
樹脂面を渚内面に接着することが有効となる。しかしな
がら、この場合においては、−１−配管端部の管端部内
外面への挿入時、管端部内外面の両面ともが泪内面に接
触し、接触摩擦面積が大となって、その挿入作業が困難
となる。The joint is provided with an inner and outer surface of the tube end, and a metal tube end coated with inner and outer surfaces is inserted into this insertion hole, and the outer surface of the tube end is It is effective to adhere the resin surface on the inner surface of Jr. Hini to the inner surface of Nagisa. However, in this case, -1- When the pipe end is inserted into the inner and outer surfaces of the pipe end, both the inner and outer surfaces of the pipe end come into contact with the inner surface of the pipe end, and the contact friction area becomes large, making the insertion work difficult. It becomes difficult.
また、講深さを浅くしたのでは、所定の耐引抜強度を保
証し難い。Furthermore, if the depth is made shallow, it is difficult to guarantee a predetermined pull-out strength.
このように、」１記の内外面被覆金属管を接着剤によっ
て接合するには、種々の問題がある。As described above, there are various problems in joining the inner and outer coated metal tubes described in item 1 with an adhesive.
本発明の目的は、接着剤方式によって、」１記の内外面
被覆金属管を、管端面の金属面の腐食を良好に防止し、
かつ、充分な耐引抜強度を保証して容易に接合できる防
食金属管の接続構造を提供することにある。An object of the present invention is to effectively prevent corrosion of the metal surface of the tube end surface by using an adhesive method to coat the metal tube on the inner and outer surfaces of item 1,
Another object of the present invention is to provide a corrosion-resistant metal pipe connection structure that guarantees sufficient pull-out strength and can be easily joined.
く課題を解決するための手段〉
本発明に係る防食金属管の接続構造は、金属管の内・外
面に樹脂被覆を施した防食金属管の端部が樹脂被覆を有
するままで継手本体の管端部内外面に挿入されており、
該管端部の内外面が前記講の内面に接着剤によって接着
されており、同端部に隣接する防食金属管外面部分が継
手の突出補助部で囲まれており、該突出補助部の内面に
止めリンクが接着剤を介して固着されており、該止めリ
ンク内面と上記の防食金属管外面部分とが接着剤によっ
て接着されていることを特徴とする構成である。Means for Solving the Problems> The connection structure for corrosion-resistant metal pipes according to the present invention is such that the ends of the corrosion-resistant metal pipes coated with resin on the inner and outer surfaces of the metal pipes can be connected to the pipes of the joint body while the ends of the metal pipes are coated with resin. It is inserted into the inner and outer surfaces of the end.
The inner and outer surfaces of the tube end are bonded to the inner surface of the tube with an adhesive, the outer surface of the corrosion-resistant metal tube adjacent to the end is surrounded by a protruding auxiliary part of the joint, and the inner surface of the protruding auxiliary part This configuration is characterized in that a stop link is fixed to the stop link via an adhesive, and the inner surface of the stop link and the outer surface portion of the corrosion-proof metal pipe are bonded together with the adhesive.
〈実゛施例の説明〉 以下、図面により本発明の実施例について説明する。<Explanation of practical examples> Embodiments of the present invention will be described below with reference to the drawings.
第１図Ａ並びに第１図■３は本発明の一実施例において
用いるプラスチック製継手への断面図並びに１Ｅ面１″
：Ａをそれぞれ示している。第２図は同ト実施例におい
て用いるプラスチック契止めリングＢを示し、−・部を
断面で表わした（ｊｊ１１面図である。Figure 1A and Figure 1■3 are cross-sectional views of a plastic joint used in one embodiment of the present invention, and 1E surface 1''
:A is shown respectively. Fig. 2 shows the plastic retaining ring B used in the same embodiment, and shows the - section in cross section (jj11 side view).
第１図Δ並びに第１図Ｂにおいて、１は継手本体部、２
．２は継手両側の突出補助部である。継丁本体部１の両
１１！すには管端部内外面１１．１１を設けである。こ
の講ｌｌは奥方に至るほど厚みを小とするデーパ講とし
である。突出補助部の奥方部２１は周方向にス１〜レー
１−の空間としである。また、同１・、突出補助部内面
の前端から上記奥方部前端に至る部分においては、突部
２２．・・・を所定の周方向間Ｎ；：を隔てて形成しで
ある。２３．・・・はこれら突部２２゜２２間の空隙部
を示している。In Fig. 1Δ and Fig. 1B, 1 is the joint body, 2
．． 2 are protruding auxiliary parts on both sides of the joint. Both 11 of the joint body part 1! The tube ends are provided with inner and outer surfaces 11.11. This lecture is a deep-dive lecture in which the thickness decreases as it gets closer to the back. The inner part 21 of the protruding auxiliary part has a space of 1 to 1- in the circumferential direction. In addition, in the portion from the front end of the inner surface of the protrusion auxiliary part to the front end of the inner part, the protrusion 22. . . . are formed at a predetermined distance N in the circumferential direction. 23. . . . indicates a gap between these protrusions 22 and 22.
１−１記第２図に示す止めリング１３の先端部には、Ｉ
−１記突出補助部２の空隙部２３に通して前記奥方のリ
ド間２１に納めることができる突子３２が設けてあり、
該突１’３２．を同上奥方空間２１に納めたのち、同止
めリンク１３を回転さぜれば、止めリンク１３を突出補
助部２内に係止することができる。1-1, the tip of the retaining ring 13 shown in FIG.
-1 A protrusion 32 is provided that can be passed through the gap 23 of the protrusion auxiliary part 2 and stored in the rear lid gap 21,
The protrusion 1'32. If the retaining link 13 is rotated after the retaining link 13 is placed in the rear space 21, the retaining link 13 can be retained within the protruding auxiliary portion 2.
第３図は本発明に係る防食金属管の接続構造の・実施例
を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing an embodiment of the corrosion-resistant metal pipe connection structure according to the present invention.
第３図においてＡは前記した継手てあり、例えば硬化塩
化ビニル製である。■」は防食金属管であり、金属管（
例えば、鋼管）旧の内外面にプラスチック被覆４２．４
２、例えば塩化ビニル被覆を施しである。この防食金属
管Ｐの端部Ｉ）、は継手本体部１の管端部内外面１１に
挿入され、該管端部外面のプラスチック被覆面並ひに内
面のプラスチック被覆面が漬１１の内面に接着剤５によ
って接着されている。Ｌ３は止めリングであり、継手の
突出補助部２内に係止されると共に接着剤５で接着され
ている。この止めリング１３の内面と防食金属管Ｐの外
面との間も接着剤５によって接着されている。In FIG. 3, A denotes the aforementioned joint, which is made of, for example, hardened vinyl chloride. "■" is a corrosion-resistant metal pipe, and a metal pipe (
For example, steel pipe) plastic coating on the inner and outer surfaces of the old 42.4
2. For example, it is coated with vinyl chloride. The end I) of this corrosion-resistant metal pipe P is inserted into the inner and outer surfaces 11 of the pipe end of the joint body 1, and the plastic-coated surface on the outer surface of the tube end and the plastic-coated surface on the inner surface are bonded to the inner surface of the pipe 11. It is bonded with adhesive 5. Reference numeral L3 is a retaining ring, which is secured within the protruding auxiliary portion 2 of the joint and is adhered with adhesive 5. The inner surface of the retaining ring 13 and the outer surface of the anticorrosive metal tube P are also bonded together with an adhesive 5.
Ｌ記接続ＷＩ造によって継手Ａと防食金属管Ｐとを接合
するには、まず、防食金属管１〕上に止めリングＦ（を
予め挿通し、次いで、防食金属管端部１〕。To join the joint A and the anti-corrosion metal pipe P using the connection WI structure described in L, first, the retaining ring F (is inserted in advance onto the anti-corrosion metal pipe 1), and then the end portion 1 of the anti-corrosion metal pipe is inserted.
の内外面に接着剤５を塗布し、この管端部ｌ）ｌを継［
本体部１の管端部挿入個］】に挿入する。この場合、挿
入の初期においては、樹脂製継手の溝内面、管端部の内
外樹脂層表面の接着剤による膨潤とｉＭ １ｒｌｉ （
；Ｍ Ｉ １の内面）のデーパ（’／、、〜’／４．）
との相乗効果による流動差込みが主体であり、その後に
おいては、接触面での樹脂の弾性変形による変形差込み
が一１ｉ体となる。防食金属管端部Ｐ、を継「本体１の
？ＭＩｌに挿入接着したのちは、止めリンク＋１の外面
Ｎ１ｒひに突出補助部２で囲まれた防食金属管外面部分
に接着剤５を塗布し、次いで、止めリンクｔ（を引き戻
して突出ｈｆｉ助部２内に挿入し、ｊｇ、 ＩＩめリン
グ１１を回転させて突出Ｎｉ助部２内に係１させ、止め
リンク月３と突出補助部２との間ｉｌｒびに庄ｙ）リン
ク１３と１す１食金属管との間を接着させる。Apply adhesive 5 to the inner and outer surfaces of the pipe, and connect this pipe end l)l to [
Insert the tube end into the main body part 1. In this case, at the initial stage of insertion, the inner surface of the groove of the resin joint and the inner and outer resin layer surfaces of the tube end are swollen by the adhesive and iM 1rli (
; M I 1 inner surface) of Depa ('/,,~'/4.)
The flow insertion is mainly due to the synergistic effect with the contact surface, and after that, the deformation insertion due to the elastic deformation of the resin at the contact surface becomes the main body. After inserting and gluing the anti-corrosion metal pipe end P into the ?MIl of the main body 1, apply adhesive 5 to the outer surface of the anti-corrosion metal pipe surrounded by the protruding auxiliary part 2 on the outer surface N1r of the retaining link +1. Next, pull back the stop link t and insert it into the protruding HFI auxiliary part 2, rotate the second ring 11 to engage it in the protruding Ni auxiliary part 2, and connect the stop link 3 and the protruding auxiliary part 2. 2) Glue between the link 13 and the single metal pipe.
なお、上記実施例においては、防食金属管同志を接続し
ているが、防食金属管と１ラスデツク管との異種接続の
場合は、防食金属管と継手との間の接合に本発明を適用
する。In addition, in the above embodiment, corrosion-proof metal pipes are connected to each other, but in the case of a dissimilar connection between a corrosion-proof metal pipe and a single-layer deck pipe, the present invention is applied to the connection between the corrosion-proof metal pipe and the joint. .
〈発明の効果〉
本発明に係る防食金属管の接続構造は上述した通りの精
成であり、防食金属管端部を継手本体の管端部挿入講に
挿入し、該管端部の内外面を溝内面に接着しており、管
端面の金属面を、渚深さに対応する長い距離の接着界面
で挾んであるから、該金属面への内外からのシール距離
を充分に長くてき、同金属面を良く防食できる。また、
継手の突出補助部と防食金属管との間に止めリンクを装
着し、止めリングと突出補助部との間を係止のうえ接着
し、止めリングと防食金属管との間を接着しているから
、接合部の耐引抜力を増大でき、万一継手本体部の管端
部挿入渚の深さが浅い場合でも、耐引抜力をよく保証で
きる。而るに、管端部挿入講を浅くできるので、管端部
挿入講への管端部の挿入も容易に行い得、止めリンクの
突出補助部への挿入係止も容易であるから、接着作業を
全体として容易に行い得る。<Effects of the Invention> The corrosion-resistant metal pipe connection structure according to the present invention is refined as described above, and the corrosion-resistant metal pipe end is inserted into the pipe end insertion hole of the joint body, and the inner and outer surfaces of the pipe end are is bonded to the inner surface of the groove, and the metal surface of the pipe end is sandwiched by an adhesive interface with a long distance corresponding to the beach depth, so the sealing distance to the metal surface from the inside and outside is sufficiently long, and the same Good corrosion protection for metal surfaces. Also,
A retaining link is installed between the protruding auxiliary part of the joint and the anti-corrosion metal pipe, the retaining ring and the protruding auxiliary part are locked and bonded, and the retaining ring and the anti-corrosive metal pipe are bonded together. Therefore, the pull-out force of the joint can be increased, and even if the insertion depth of the pipe end of the joint body is shallow, the pull-out force can be well guaranteed. In addition, since the tube end insertion hole can be made shallow, the tube end can be easily inserted into the tube end insertion hole, and it is also easy to insert and lock the retaining link into the protruding auxiliary portion, so that adhesive The overall work can be done easily.
このように本発明によれば、金属管の内外面に樹脂被覆
を施した防食金属管を、ねじ切削加工を施すことなしに
、接着法により、充分な耐引抜強度、並びに管端面での
金属面の防食性をよく保証して容易に接続することかり
能である。As described above, according to the present invention, a corrosion-resistant metal tube whose inner and outer surfaces are coated with resin can be bonded to a metal tube with sufficient pull-out strength and metal at the end surface of the tube without thread cutting. This ensures good surface corrosion resistance and allows for easy connection.
【図面の簡単な説明】
第１図Δ、並ひに第１図■３はそれぞれ本発明の・実施
例において使用する継手を示す縦断面図並ひに１「面図
、第２国は同上実施例において使用する止めリンクを示
す説明図、第３図は本発明の一実施例を示す縦断面図、
第４図は従来例を示す縦断面図である。
１）・・・防食金属管、１）１・・・管端部、Ａ・・・
継手、１−・継手本体、１１・・・管端部挿入講、２・
・・突出補助部、１（・・・１１．めリング、５・・・
接着剤。
持３１出願人
積木化学１″業株式会月
代表者 冶 １） 馨[Brief explanation of the drawings] Figure 1 ∆, line 1 and Figure 1 ■ 3 are longitudinal sectional views, line 1 and side views showing joints used in embodiments of the present invention, respectively, and the second country is the same as above. An explanatory diagram showing a retaining link used in the embodiment, FIG. 3 is a longitudinal sectional view showing an embodiment of the present invention,
FIG. 4 is a longitudinal sectional view showing a conventional example. 1)... Corrosion-proof metal pipe, 1) 1... Pipe end, A...
Coupling, 1-・Coupling body, 11...Pipe end insertion course, 2.
...Protrusion auxiliary part, 1 (...11. Ring, 5...
glue. 31st applicant: Building Block Chemical 1'' Co., Ltd. Representative: Kaoru 1)
Claims (1)
が樹脂被覆を有するままで継手本体の管端部挿入溝に挿
入されており、該管端部の内外面が前記溝の内面に接着
剤によって接着されており、同端部に隣接する防食金属
管外面部分が継手の突出補助部で囲まれており、該突出
補助部の内面に止めリングが接着剤を介して固着されて
おり、該止めリング内面と上記の防食金属管外面部分と
が接着剤によって接着されていることを特徴とする防食
金属管の接続構造。The end of a corrosion-resistant metal tube whose inner and outer surfaces are coated with resin is inserted into the tube end insertion groove of the joint body while the resin coating remains, and the inner and outer surfaces of the tube end are inserted into the groove. The outer surface of the corrosion-proof metal pipe adjacent to the same end is surrounded by a protruding auxiliary part of the joint, and a retaining ring is fixed to the inner surface of the protruding auxiliary part via adhesive. A connection structure for a corrosion-resistant metal tube, characterized in that the inner surface of the retaining ring and the outer surface of the corrosion-resistant metal tube are adhered with an adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019896A JPH03223593A (en) | 1990-01-29 | 1990-01-29 | Connecting structure of anticorrosive metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019896A JPH03223593A (en) | 1990-01-29 | 1990-01-29 | Connecting structure of anticorrosive metal pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03223593A true JPH03223593A (en) | 1991-10-02 |
Family
ID=12011962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019896A Pending JPH03223593A (en) | 1990-01-29 | 1990-01-29 | Connecting structure of anticorrosive metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03223593A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076999A (en) * | 1990-10-10 | 1991-12-31 | The United States Of America As Represented By The United States Department Of Energy | Passive decay heat removal system for water-cooled nuclear reactors |
| JPH061988U (en) * | 1992-06-16 | 1994-01-14 | 増雄 邱 | Joint |
-
1990
- 1990-01-29 JP JP2019896A patent/JPH03223593A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076999A (en) * | 1990-10-10 | 1991-12-31 | The United States Of America As Represented By The United States Department Of Energy | Passive decay heat removal system for water-cooled nuclear reactors |
| JPH061988U (en) * | 1992-06-16 | 1994-01-14 | 増雄 邱 | Joint |
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