JPS62246692A - Manufacture of heat-insulating pipe - Google Patents
Manufacture of heat-insulating pipeInfo
- Publication number
- JPS62246692A JPS62246692A JP8691286A JP8691286A JPS62246692A JP S62246692 A JPS62246692 A JP S62246692A JP 8691286 A JP8691286 A JP 8691286A JP 8691286 A JP8691286 A JP 8691286A JP S62246692 A JPS62246692 A JP S62246692A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- pipe
- heat insulating
- stock solution
- insulating material
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000011550 stock solution Substances 0.000 claims description 21
- 239000011810 insulating material Substances 0.000 claims description 19
- 229920003002 synthetic resin Polymers 0.000 claims description 18
- 239000000057 synthetic resin Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 description 10
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 9
- 238000005187 foaming Methods 0.000 description 8
- 229920013716 polyethylene resin Polymers 0.000 description 6
- 239000006260 foam Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、管本体の外周に、合成樹脂を発泡させた断熱
材層を設けてある断熱管の製造法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a heat-insulating pipe, in which a heat-insulating layer made of foamed synthetic resin is provided on the outer periphery of a pipe body.
従来の上記断熱管は、管本体の外側に、管本体よりも口
径の大きい形枠用パイプを同芯状に配置させ、管本体と
形枠用パイプとの間隙に合成樹脂原液を注入し、その合
成樹脂原液を発泡させて断熱材層を形成していた（例え
ば特開昭５０−８１１６号公報）。The above-mentioned conventional heat-insulated pipe is made by arranging a form pipe having a larger diameter than the pipe body concentrically on the outside of the pipe body, and injecting a synthetic resin stock solution into the gap between the pipe body and the form pipe. The synthetic resin stock solution was foamed to form a heat insulating layer (for example, Japanese Patent Application Laid-open No. 8116/1983).
しかし、管本体のほぼ全長にわたって、型枠用パイプを
同芯状に配置するのは困難で、断熱材層の肉厚が不均一
になる危険性があるばかりか、型枠用パイプによって合
成樹脂原液が発泡して固化するまでの間、管本体のほぼ
全長にわたって保形しておくためには、型枠用パイプに
保形性及び強度の高いものを使用しなければならず、製
造コストが高くつき、しかも連続成形ができないという
欠点があった。However, it is difficult to arrange the formwork pipes concentrically over almost the entire length of the pipe body, and there is a risk that the thickness of the insulation layer will become uneven. In order to retain the shape of the tube over almost the entire length until the raw solution foams and solidifies, the formwork pipe must have high shape retention and strength, which reduces manufacturing costs. It has the drawbacks of being expensive and not being able to be molded continuously.
本発明の目的は、断熱管の断熱材層の肉厚を均一にしや
すくでき、しかも、安価な方法で連続的に製造できるよ
うにする点にある。SUMMARY OF THE INVENTION An object of the present invention is to easily make the thickness of the heat insulating material layer of a heat insulating pipe uniform, and also to enable continuous manufacturing at low cost.
本発明の断熱管の製造法の特徴手段は、第１テープの表
面上に合成樹脂原液を供給しながら、前記第１テープを
管本体の外周面に螺旋状に巻き付け、前記合成樹脂原液
を発泡させて断熱材層を形成し、前記合成樹脂原液が発
泡し５固化する前に、前記断熱材層の外周面に第２テー
プを螺旋状に巻き付けて、前記第２テープを前記断熱材
層の整形用筒体内に挿通させることにあり、その作用効
果は、次の通りである。The characteristic means of the method for producing a heat insulating pipe of the present invention is to spirally wrap the first tape around the outer peripheral surface of the tube body while supplying the synthetic resin stock solution onto the surface of the first tape, and to foam the synthetic resin stock solution. to form a heat insulating material layer, and before the synthetic resin stock solution foams and solidifies, a second tape is spirally wound around the outer peripheral surface of the heat insulating material layer, and the second tape is wrapped around the outer peripheral surface of the heat insulating material layer. The purpose is to insert it into the shaping cylinder, and its effects are as follows.
つまり、合成樹脂原液が発泡して固化する前に、断熱材
層の外周面に第２テープを螺旋状に巻き付けることによ
って、断熱材層の外周面がほぼ滑らかになると同時に、
第２テープを整形用筒体内に挿通させるだけで、断熱材
層が筒体内面に接着することな（、たとえ筒体が短くと
も筒体内面形状に沿った外表面に簡単に整形でき、第２
テープを整形用筒体内に挿通させる時には、整形用筒体
に対して管本体を同芯状に位置させるだけで、全長にわ
たって肉厚の均一な断熱材層を簡単に形成でき、
その上、第１テープの表面上に合成樹脂原液を供給しな
がら、第１テープを管本体の外周面に螺旋状に巻き付け
、合成樹脂原液を発泡させることによって、連続的に管
本体の外周に、断熱材層を容易に形成できる。In other words, by spirally wrapping the second tape around the outer peripheral surface of the heat insulating material layer before the synthetic resin stock solution foams and solidifies, the outer peripheral surface of the heat insulating material layer becomes almost smooth, and at the same time,
By simply inserting the second tape into the shaping cylinder, the heat insulating layer will not adhere to the inner surface of the cylinder (even if the cylinder is short, the outer surface can be easily shaped to follow the inner shape of the cylinder), 2
When inserting the tape into the shaping tube, simply position the tube body concentrically with the shaping tube, and you can easily form a layer of heat insulating material with a uniform wall thickness over the entire length. While supplying the synthetic resin stock solution onto the surface of the first tape, the first tape is wound spirally around the outer circumferential surface of the pipe body, and by foaming the synthetic resin stock solution, a heat insulating material layer is continuously applied to the outer circumference of the pipe body. can be easily formed.
従って、断熱管の連続的な製造が簡単にできるばかりか
、断熱材層を形成するのに、第２テープを巻いて整形用
筒体に挿通させるだけの簡単な方法で、断熱材層の肉厚
を均一に形成して断熱性能を向上させやすいために、断
熱管の生産性及び作業性を向上させることができ、その
上、整形用筒体に従来のような管本体のほぼ全長にわた
る長さめものを使わずとも、たとえば、短い安価な筒体
を使用すれば、製品価値を低下させないで管本体と同軸
芯状に配置しやすく、結局製造コストを低下させられ、
経済的に有利な方法を提供できた。Therefore, not only is it easy to continuously manufacture the insulation pipe, but also the thickness of the insulation layer can be formed by simply wrapping the second tape and inserting it into the shaping cylinder. Because it is easy to form a uniform thickness and improve the insulation performance, it is possible to improve the productivity and workability of the insulation pipe.In addition, it is possible to improve the productivity and workability of the insulation pipe. Even if you do not use a shark, for example, if you use a short, inexpensive cylinder, it will be easier to arrange it coaxially with the tube body without reducing the product value, which will ultimately reduce manufacturing costs.
We were able to provide an economically advantageous method.
次に、本発明の実施例を、図面に基づいて説明する。 Next, embodiments of the present invention will be described based on the drawings.
第１図に、熱媒や冷媒を輸送する鋼管、鋼管、合成樹脂
管等から成る管本体（１）の外周に、硬質のウレタン樹
脂を発泡させた断熱材層（５）を設けてある断熱管の製
造設備を示しである。Figure 1 shows a heat insulating material in which a heat insulating material layer (5) made of foamed hard urethane resin is provided around the outer periphery of a pipe body (1) made of steel pipes, steel pipes, synthetic resin pipes, etc. that transports heat medium and refrigerant. This shows the pipe manufacturing equipment.
図中、（２）は、管本体（１）を管周方向に回転させな
がら管軸芯方向に搬送する送りローラであり、（３）は
、ウレタン原液（４）を供給する発泡材ヘッドであり、
（６）は２００ｗｍ巾の第１テープで、（７）は３００
ｎ巾の第２テープで、いずれもペーパーから成る。In the figure, (2) is a feed roller that rotates the tube body (1) in the circumferential direction and conveys it in the tube axis direction, and (3) is a foam head that supplies the urethane stock solution (4). can be,
(6) is the first tape with a width of 200wm, and (7) is the first tape with a width of 300wm.
A second tape having a width of n, both of which is made of paper.
（９）はポリエチレン樹脂ライニングヘッドであり、そ
のライニングヘッド（９）からポリエチレン樹脂（１０
）の帯状体が、第２テープ（７）の表面に供給され、巻
付けることによって断熱材層（５）の保護及び止水を目
的とする外装管（１２）を形成する。(9) is a polyethylene resin lining head, and the polyethylene resin (10
) is supplied to the surface of the second tape (7) and wound to form an exterior pipe (12) for protecting the heat insulating material layer (5) and stopping water.
（１１）は水冷装置で、半溶融状態で第２テープ（７）
の表面に巻回されたポリエチレン樹脂（１０）を、冷却
させて硬化させて、前記外装管（１２）を形成するため
に利用される。(11) is a water cooling device, and the second tape (7) is in a semi-molten state.
The polyethylene resin (10) wound on the surface of the tube is cooled and hardened to form the outer tube (12).
上記設備を用いて第２図に示す断熱管を製造する方法を
次に説明する。A method of manufacturing the heat insulating tube shown in FIG. 2 using the above equipment will now be described.
送りローラ（２）によって管本体（１）を連続的に管周
方向に回転させながら送り、第１テープ（６）の表面上
にウレタン原液（４）を供給しながら、第１テープ（６
）を管本体（１）の外周面に螺旋状に巻き付けていく。The tube body (1) is continuously rotated and fed in the tube circumferential direction by the feed roller (2), and the first tape (6) is fed while supplying the urethane stock solution (4) onto the surface of the first tape (6).
) is wound spirally around the outer peripheral surface of the tube body (1).
次にウレタン原液（４）を発泡させて管本体（１）の外
側に断熱材Ｎ（５）を形成させるに伴い、管本体（１）
上で発泡固化しつつある断熱材層（５）の外周面に連続
的に繰り出される第２テープ（７）を螺旋状に巻き付け
て、ウレタン原液（４）が発泡して固化する前に、第２
テープ（７）を断熱材層（５）の外周面に螺旋状に巻き
付け、第２テープ（７）を断熱材層（５）の整形用筒体
（８）内に挿通させて、断熱材層（５）の外形及び肉厚
を整形する。Next, as the urethane stock solution (4) is foamed to form a heat insulating material N (5) on the outside of the tube body (1),
A second tape (7) that is continuously unwound is spirally wound around the outer peripheral surface of the heat insulating material layer (5) which is foaming and solidifying above, and the second tape (7) is wrapped spirally around the outer peripheral surface of the heat insulating material layer (5) which is foaming and solidifying above. 2
The tape (7) is spirally wound around the outer peripheral surface of the insulation layer (5), and the second tape (7) is inserted into the shaping cylinder (8) of the insulation layer (5) to remove the insulation layer. (5) Shape the external shape and wall thickness.
そして、第２テープ（７）の表面に、半溶融状態のポリ
エチレン樹脂（１０）の帯状体を巻き付けてライニング
し、水冷却装置（１１）によって冷却硬化させて、外装
管（１２）を成形する。Then, the surface of the second tape (7) is lined with a band of semi-molten polyethylene resin (10), and is cooled and hardened by a water cooling device (11) to form an exterior pipe (12). .
尚、整形用筒体（８）は、第２テープ（７）が挿通しや
すいように、同方向の一部分に切欠部（８Ａ）を形成し
、厚肉の塩化ビニル管から成形しである。The shaping cylinder (8) has a notch (8A) formed in a portion in the same direction so that the second tape (7) can be easily inserted therethrough, and is molded from a thick vinyl chloride pipe.
前記最終工程のポリエチレン樹脂（１０）巻付けによる
ライニングに代え、第３図に示すように、第２テープ（
７）の外周面に、発泡機ヘッド（１３）からウレタン原
液を供給して、そのウレタン原液（４）が発泡する前に
、一定の長さに既に成形された塩化ビニル管及びポリエ
チレン管等の合成樹脂管、あるいは鋼管等から成る外装
管（１２）に挿入し、外装管（１２）と第２テープ（７
）との間で、ウレタン原液（４）を発泡固化させて、一
定寸法の断熱管を成形しても良く、この場合、第１テー
プ（６）上に供給するウレタン原液（４）は、発泡速度
が速く、且つ、固化時間の短いものを使用し、第２テー
プ（７）上に供給するウレタン原液（４）は、発泡速度
が遅く、且つ、固化時間の長いものを使用すれば良い。Instead of lining by wrapping the polyethylene resin (10) in the final step, as shown in FIG. 3, a second tape (
7), a urethane stock solution is supplied from the foaming machine head (13), and before the urethane stock solution (4) is foamed, a polyvinyl chloride pipe, a polyethylene pipe, etc., which has already been formed to a certain length, is Insert it into the outer pipe (12) made of synthetic resin pipe or steel pipe, and connect the outer pipe (12) and the second tape (7).
), the urethane stock solution (4) may be foamed and solidified to form an insulated pipe of a certain size. In this case, the urethane stock solution (4) supplied onto the first tape (6) is foamed and solidified. A urethane stock solution (4) that has a fast foaming speed and a short solidification time may be used, and a urethane stock solution (4) that has a slow foaming speed and a long solidification time may be used to be supplied onto the second tape (7).
前記断熱材層（５）を形成するに、ウレタン樹脂を発泡
させる以外に、他の合成樹脂を発泡させて形成しても良
い。The heat insulating material layer (5) may be formed by foaming other synthetic resins instead of foaming urethane resin.
前記外装管（１２）は、特に設けなくとも良く、設ける
場合は、ポリエチレン樹脂のライニング以外に、他の合
成樹脂のライニングが使用できる。The exterior pipe (12) does not need to be provided, and if provided, a lining made of other synthetic resin can be used in addition to the polyethylene resin lining.
図面は本発明に係る断熱管の製造法の一実施例を示し、
第１図は断熱管の製造設備を示す斜視図、第２図は断熱
管の断面図、第３図は別実施例の製造設備を示す斜視図
である。
（１）・・・・・・管本体、（４）・・・・・・合成樹
脂原液、（５）・・・・・・断熱材層、（６）・・・・
・・第１テープ、（７）・・・・・・第２テープ、（８
）・・・・・・整形用筒体。The drawings show an embodiment of the method for manufacturing a heat insulating pipe according to the present invention,
FIG. 1 is a perspective view showing a manufacturing facility for a heat insulating tube, FIG. 2 is a sectional view of the heat insulating pipe, and FIG. 3 is a perspective view showing a manufacturing facility in another embodiment. (1)...Pipe body, (4)...Synthetic resin stock solution, (5)...Insulation layer, (6)...
...First tape, (7) ...Second tape, (8
)...Cylinder for shaping.
Claims (1)
（５）を設けてある断熱管の製造法であって、第１テー
プ（６）の表面上に合成樹脂原液（４）を供給しながら
、前記第１テープ（６）を前記管本体（１）の外周面に
螺旋状に巻き付け、前記合成樹脂原液（４）を発泡させ
て前記断熱材層（５）を形成し、前記合成樹脂原液（４
）が発泡して固化する前に、前記断熱材層（５）の外周
面に第２テープ（７）を螺旋状に巻き付けて、前記第２
テープ（７）を前記断熱材層（５）の整形用筒体（８）
内に挿通させる断熱管の製造法。A method for producing a heat-insulating pipe in which a heat-insulating material layer (5) made of foamed synthetic resin is provided on the outer periphery of a pipe body (1), wherein a synthetic resin stock solution (4) is provided on the surface of a first tape (6). While supplying, the first tape (6) is spirally wound around the outer peripheral surface of the tube body (1), and the synthetic resin stock solution (4) is foamed to form the heat insulating material layer (5), The synthetic resin stock solution (4
) is foamed and solidified, a second tape (7) is spirally wound around the outer circumferential surface of the heat insulating material layer (5).
The tape (7) is attached to the shaping cylinder (8) of the heat insulating material layer (5).
A method of manufacturing an insulated pipe that is inserted into the interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8691286A JPS62246692A (en) | 1986-04-15 | 1986-04-15 | Manufacture of heat-insulating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8691286A JPS62246692A (en) | 1986-04-15 | 1986-04-15 | Manufacture of heat-insulating pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62246692A true JPS62246692A (en) | 1987-10-27 |
Family
ID=13900056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8691286A Pending JPS62246692A (en) | 1986-04-15 | 1986-04-15 | Manufacture of heat-insulating pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62246692A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009073199A (en) * | 2008-12-04 | 2009-04-09 | Tohoku Ricoh Co Ltd | Two-sided printing apparatus |
| JP2011174545A (en) * | 2010-02-24 | 2011-09-08 | Furukawa Electric Co Ltd:The | Method of manufacturing heat insulating pipe cover |
| JP2013245725A (en) * | 2012-05-24 | 2013-12-09 | Meisei Ind Co Ltd | Heat insulation structure of heat insulation object, heat insulation facility and heat insulation remodeling method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5761894A (en) * | 1980-09-26 | 1982-04-14 | Inoue Mtp Kk | Heat insulating pipe cover and manufacture thereof |
-
1986
- 1986-04-15 JP JP8691286A patent/JPS62246692A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5761894A (en) * | 1980-09-26 | 1982-04-14 | Inoue Mtp Kk | Heat insulating pipe cover and manufacture thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009073199A (en) * | 2008-12-04 | 2009-04-09 | Tohoku Ricoh Co Ltd | Two-sided printing apparatus |
| JP2011174545A (en) * | 2010-02-24 | 2011-09-08 | Furukawa Electric Co Ltd:The | Method of manufacturing heat insulating pipe cover |
| JP2013245725A (en) * | 2012-05-24 | 2013-12-09 | Meisei Ind Co Ltd | Heat insulation structure of heat insulation object, heat insulation facility and heat insulation remodeling method |
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