JPS6217671Y2 - - Google Patents
Info
- Publication number
- JPS6217671Y2 JPS6217671Y2 JP1977008770U JP877077U JPS6217671Y2 JP S6217671 Y2 JPS6217671 Y2 JP S6217671Y2 JP 1977008770 U JP1977008770 U JP 1977008770U JP 877077 U JP877077 U JP 877077U JP S6217671 Y2 JPS6217671 Y2 JP S6217671Y2
- Authority
- JP
- Japan
- Prior art keywords
- coated steel
- steel pipe
- fastener
- packing
- outer ring
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000012856 packing Methods 0.000 claims description 19
- 239000011247 coating layer Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【考案の詳細な説明】
本考案は高内圧に耐えるようにした内面被覆鋼
管の接続部に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection section for internally coated steel pipes that can withstand high internal pressure.
従来、フランジ付鋼管を高内圧に耐えるように
接続する場合、相対峙するフランジの間に、金属
の薄い板の帯を石綿などの帯とともにうず巻き形
にまき、輪形に作りあげたパツキングを挟み、締
付具で強力に締付けて金属の薄い板がフランジの
側面に食い込むようにした鋼管の接続部を形成す
ることがある。しかし内面に被覆層が形成され、
該被覆層がフランジの側面まで鍔返しされたよう
な内面被覆鋼管の接続に、叙上の接続形式を採用
しようとしても、金属の薄い板が被覆層の鍔返し
部を破損してしまい充分なシールができないとい
う欠点があつた。 Conventionally, when connecting flanged steel pipes to withstand high internal pressure, a strip of thin metal plate was wound in a spiral shape with a strip of asbestos between opposing flanges, and a ring-shaped packing was sandwiched between the flanges. Connections of steel pipes may be formed by tightening the fittings so that the thin metal plate bites into the side of the flange. However, a coating layer is formed on the inner surface,
If you try to use the above connection method to connect internally coated steel pipes in which the coating layer is flanged all the way to the side of the flange, the thin metal plate will damage the flanged part of the coating layer, making it difficult to The drawback was that it could not be sealed.
また、叙上の接続形式の代りに、被覆層よりも
軟い材料からなるパツキングを単に叙上の内面被
覆鋼管の接続に用いて被覆層の鍔返し部を破損し
ないようにしようとしても、フランジ間を締付具
で強力に締付けた場合パツキングが外方に膨出し
てしまい、高内圧に耐えるまで充分に締付けるこ
とができない。 Furthermore, even if one attempts to simply connect the internally coated steel pipes described above by using packing made of a material softer than the coating layer instead of the connection type described above, in order to avoid damaging the flanged portion of the coating layer, If the gap is strongly tightened with a fastener, the packing will bulge outward, making it impossible to tighten it sufficiently to withstand high internal pressure.
本考案は、叙上の如き従来のものの欠点を解消
することを目的としてなされたものであつて、本
願の要旨は、接続すべき２本の内面被覆鋼管の管
端部に相対峙してフランジが設けられ、それぞれ
の内面被覆鋼管の被覆層が鍔返しされてフランジ
の側面が覆われ、その相対峙するフランジの間に
前記被覆層よりも軟かい材料からなる外周の中央
部がとがつた環状のパツキングが挿入され、該パ
ツキングの外周部に、該パツキングの外周形状に
合せた溝状の内周面を有する外輪が当接され、該
外輪が前記の相対峙するフランジ間を締付ける締
付具で支持された内面被覆鋼管の接続部に存す
る。 The present invention has been made for the purpose of eliminating the drawbacks of the conventional ones as described above, and the gist of the present application is to connect flanges facing each other to the pipe ends of two inner-coated steel pipes to be connected. is provided, the coating layer of each inner-coated steel pipe is flanged back to cover the side surfaces of the flanges, and the center part of the outer periphery made of a material softer than the coating layer is sharpened between the opposing flanges. An annular packing is inserted, and an outer ring having a groove-shaped inner circumferential surface that matches the outer circumferential shape of the packing is brought into contact with the outer circumference of the packing, and the outer ring is tightened between the opposing flanges. It is located at the joint of an internally coated steel pipe supported by a fixture.
以下、本考案を図面の一実施例を参照して説明
する。 Hereinafter, the present invention will be explained with reference to an embodiment of the drawings.
１，１′は接続すべき２本の内面被覆鋼管であ
り、鋼管１１，１１′の内面に硬質塩化ビニル樹
脂などの被覆層１２，１２′が設けられている。
内面被覆鋼管１１，１１′の管端部の外周部に相
対峙してフランジ２，２′が設けられ、被覆層１
２，１２′の鍔返し１２１，１２１′によりフラン
ジ２，２′の側面が中途まで覆われている。 Reference numerals 1 and 1' denote two inner-coated steel pipes to be connected, and coating layers 12 and 12' made of hard vinyl chloride resin or the like are provided on the inner surfaces of the steel pipes 11 and 11'.
Flanges 2 and 2' are provided facing each other on the outer periphery of the pipe ends of the inner-coated steel pipes 11 and 11', and the coating layer 1
The sides of the flanges 2, 2' are covered halfway by the flanges 121, 121' of the flanges 2, 12'.
その相対峙するフランジ２，２′の間に前記被
覆層１２，１２′よりも軟い材料からなるパツキ
ング４が挿入されている。パツキング４の材料は
被覆層１２，１２′よりもわずかに軟いもの、例
えば被覆層１２，１２′がシヨアＤ硬度70〜90゜
の硬質塩化ビニル樹脂等からなる場合は、シヨア
Ｄ硬度60〜65゜のスチレンブタジエンラバー等の
ゴム等のものが好適に用いられる。 A packing 4 made of a material softer than the covering layers 12, 12' is inserted between the opposing flanges 2, 2'. The material of the packing 4 is slightly softer than the covering layers 12, 12'. For example, if the covering layers 12, 12' are made of hard vinyl chloride resin with a shore D hardness of 70 to 90 degrees, Rubber such as 65° styrene-butadiene rubber is preferably used.
パツキング４の外周部はその中央部がとがつた
形とされ、そのとがつた形に合せて周方向の溝状
の内周面を有する外輪５が、パツキング４の外周
部に当接され、該外輪５の外面が締付具６に当接
するようにして支持されて、両フランジが締付け
可能とされている。尚、第２図の実施例の如く、
外輪５′が該外輪５′に設けられた通孔５１′に締
付具６が挿通されるようにして締付具６で支持さ
れてもよい。また、外輪５，５′とパツキング４
の外周部との当接部を接着剤により接着してもよ
い。 The outer periphery of the packing 4 has a sharp shape at the center, and an outer ring 5 having a groove-shaped inner circumferential surface in the circumferential direction in accordance with the sharp shape is brought into contact with the outer periphery of the packing 4, The outer surface of the outer ring 5 is supported so as to come into contact with a fastener 6, so that both flanges can be tightened. Incidentally, as in the embodiment shown in Fig. 2,
The outer ring 5' may be supported by a fastener 6 such that the fastener 6 is inserted into a through hole 51' provided in the outer ring 5'. In addition, outer rings 5, 5' and packing 4
The contact portion with the outer circumferential portion may be bonded with an adhesive.
叙上の如く、本考案内面被覆鋼管の接続部は、
被覆層が鍔返しされてフランジの側面が覆われた
接続すべき２本のフランジ付内面被覆鋼管の相対
峙するフランジの間に、前記被覆層よりも軟かい
材料からなる環状のパツキングが挿入されている
ので、締付具を強力に締付けていつても、被覆層
の鍔返し部を破損することがなく、また、パツキ
ングは外周の中央部がとがつた形状をし、その外
周部に、パツキングの外周形状に合せた溝状の内
周面を有する外輪が当接され、外輪がフランジ間
を締付ける締付具で支持されているので、パツキ
ングのとがつた外周が外輪の溝状の内周面に嵌合
して外方へ膨出するのが確実におさえられ、フラ
ンジ間の締付力や高い管内圧に耐えることができ
る。 As mentioned above, the joint of the inner-coated steel pipe of the present invention is
An annular packing made of a material softer than the coating layer is inserted between the opposing flanges of two flanged internally coated steel pipes to be connected whose coating layers are flanged back and the sides of the flanges are covered. Because of this, even if the fastener is strongly tightened, the flange part of the covering layer will not be damaged.In addition, the packing has a sharp shape at the center of the outer periphery, and the packing is attached to the outer periphery. The outer ring has a groove-shaped inner circumference that matches the outer circumference of the outer ring, and the outer ring is supported by a fastener that tightens between the flanges. It fits into the surface, reliably suppresses outward bulge, and can withstand the tightening force between flanges and high pipe internal pressure.
第１図は本考案の一実施例を示す一部縦断正面
図、第２図は本考案の他の一実施例を示す一部縦
断正面図である。
符号の説明、１，１′……内面被覆鋼管、２，
２′……フランジ、３，３′……鍔返し、４……パ
ツキング、５，５′……外輪、６……締付具。
FIG. 1 is a partially longitudinal front view showing one embodiment of the present invention, and FIG. 2 is a partially longitudinal front view showing another embodiment of the present invention. Explanation of symbols, 1, 1'...Inner coated steel pipe, 2,
2'...Flange, 3,3'...Tsubagaeshi, 4...Packing, 5,5'...Outer ring, 6...Tightening tool.
Claims (1)
対峙してフランジが設けられ、それぞれの内面
被覆鋼管の被覆層が鍔返しされてフランジ間に
前記被覆層よりも軟かい材料からなる外周の中
央部がとがつた環状のパツキングが挿入され、
該パツキングの外周部に、該パツキングの外周
形状に合せた溝状の内周面を有する外輪が当接
され、該外輪が前記の相対峙するフランジ間を
締付ける締付具で支持された内面被覆鋼管の接
続部。 ２ 実用新案登録請求の範囲第１項において外輪
がその外周面を締付具に当接するようにして締
付具で支持された内面被覆鋼管の接続部。 ３ 実用新案登録請求の範囲第１項において、外
輪が該外輪に設けられた通孔に締付具が挿通さ
れるようにして締付具で支持された内面被覆鋼
管の接続部。 ４ 実用新案登録請求の範囲第１項、第２項また
は第３項において、被覆層が硬質塩化ビニル樹
脂よりなる内面被覆鋼管の接続部。 ５ 実用新案登録請求の範囲第１項、第２項、第
３項または第４項において、パツキングがシヨ
アＤ硬度60〜65゜である内面被覆鋼管の接続
部。[Claims for Utility Model Registration] 1. Flanges are provided facing each other at the ends of two inner-coated steel pipes to be connected, and the coating layer of each inner-coated steel pipe is flanged back so that the coating is formed between the flanges. An annular packing made of a material softer than the layer and having a sharp center on the outer periphery is inserted.
An inner coating in which an outer ring having a groove-shaped inner circumferential surface matching the outer circumferential shape of the packing is abutted on the outer circumference of the packing, and the outer ring is supported by a fastener that tightens between the opposing flanges. Steel pipe connections. 2. A connection part of an inner-coated steel pipe supported by a fastener such that the outer ring contacts the fastener with its outer peripheral surface as defined in claim 1 of the utility model registration claim. 3. The connection portion of an inner-coated steel pipe according to claim 1 of the utility model registration claim, in which the outer ring is supported by a fastener such that the fastener is inserted into a through hole provided in the outer ring. 4. The connection portion of an inner-coated steel pipe whose coating layer is made of hard vinyl chloride resin, as set forth in claim 1, 2, or 3 of the utility model registration claim. 5. The connection portion of an inner-coated steel pipe in which the packing has a shore D hardness of 60 to 65°, as set forth in claim 1, 2, 3, or 4 of the utility model registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977008770U JPS6217671Y2 (en) | 1977-01-26 | 1977-01-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977008770U JPS6217671Y2 (en) | 1977-01-26 | 1977-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53103929U JPS53103929U (en) | 1978-08-22 |
| JPS6217671Y2 true JPS6217671Y2 (en) | 1987-05-07 |
Family
ID=28694732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977008770U Expired JPS6217671Y2 (en) | 1977-01-26 | 1977-01-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6217671Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5026977U (en) * | 1973-07-03 | 1975-03-28 |
-
1977
- 1977-01-26 JP JP1977008770U patent/JPS6217671Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5026977U (en) * | 1973-07-03 | 1975-03-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53103929U (en) | 1978-08-22 |
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