JPH02304300A - Repairing method for connecting part of heat insulating covering material for air-conditioning refrigerant pipe - Google Patents
Repairing method for connecting part of heat insulating covering material for air-conditioning refrigerant pipeInfo
- Publication number
- JPH02304300A JPH02304300A JP12423989A JP12423989A JPH02304300A JP H02304300 A JPH02304300 A JP H02304300A JP 12423989 A JP12423989 A JP 12423989A JP 12423989 A JP12423989 A JP 12423989A JP H02304300 A JPH02304300 A JP H02304300A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- foaming agent
- insulating cover
- foaming
- filling
- 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
- 239000003507 refrigerant Substances 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 title abstract description 4
- 238000000034 method Methods 0.000 title description 8
- 238000004378 air conditioning Methods 0.000 title description 6
- 239000004088 foaming agent Substances 0.000 claims abstract description 16
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003063 flame retardant Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims 1
- 238000005187 foaming Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920002323 Silicone foam Polymers 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- 239000013514 silicone foam Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000012720 thermal barrier coating Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Thermal Insulation (AREA)
Abstract
Description
【発明の詳細な説明】
「発明の目的」
本発明は空調用冷媒配管断熱被覆材の接合部補修工法に
係り、簡易な操作で仕上り状態が良好で的確な断熱被覆
をもった接合部を形成することのできる補修工法を提供
しようとするものである。Detailed Description of the Invention [Object of the Invention] The present invention relates to a method for repairing joints of heat-insulating coatings for air conditioning refrigerant piping, and forms joints with a good finish and accurate heat-insulating coating by simple operations. The aim is to provide a repair method that can
（産業上の利用分野） 空調用冷媒配管断熱被覆材の接合部補修工法。(Industrial application field) A method for repairing joints of heat-insulating coatings for air conditioning refrigerant piping.
（従来の技術）
空調用冷媒配管としては、シリコーン系難燃性被覆断熱
管が使用されており、その接合部は第３図に示すように
、金属管〔鋼管〕（１）の継手溶接部（２）の被覆につ
いて、シリコーン系発泡難燃性被覆材で作った筒形の接
合部体（３）をカットしてシリコーン系接着剤でカット
部分（７）と端部（８）を現場接着する方法がとられて
いる。(Prior art) As refrigerant piping for air conditioning, silicone-based flame-retardant coated and insulated pipes are used, and the joints are welded joints of metal pipes [steel pipes] (1), as shown in Figure 3. Regarding the coating in (2), cut the cylindrical joint body (3) made of silicone foam flame retardant coating material and glue the cut part (7) and end (8) on-site using silicone adhesive. A method is being adopted to do so.
（発明が解決しようとする課題）
ところが上記のような従来のものにおいては、施行現場
が高所であり、且つ暗所であるため、端面り８）などが
完全に接着したかどうかの確認が難しい。万一不備の場
合は、鋼管が結露して水が下に滴り落ちて、機器に重大
な影響を及ぼすことになる。(Problem to be Solved by the Invention) However, in the conventional method as described above, since the installation site is in a high place and in a dark place, it is difficult to confirm whether the end face 8) etc. have been completely bonded. difficult. In the unlikely event that there is a problem, the steel pipes will condense and water will drip down, seriously affecting the equipment.
又前記の接合部体（３）を的確な寸法に切断して準備す
ることは容易でない。この寸法が正確でないと有効な閉
塞接合が得られないことは当然で、特に短小または狭小
な接合部体（３）となると更に別の接合部体（図示せず
）を準備しなければならないので非常に面倒となる。従
って一般的には若干大きい接合部体を準備し、現場で部
分的に切断しながら寸法合わせすることとなるが、この
ようにしても工数が相当に大とならざるを得ない。Furthermore, it is not easy to prepare and cut the joint body (3) into appropriate dimensions. It goes without saying that if this dimension is not accurate, an effective closed joint cannot be obtained, and especially if the joint body (3) is short or narrow, another joint body (not shown) must be prepared. It becomes very troublesome. Therefore, in general, a slightly larger joint body is prepared and the dimensions are adjusted by partially cutting it on site, but even if this method is used, the number of man-hours inevitably increases considerably.
「発明の構成」
（課題を解決するための手段）
本発明者らは、上記した課題を解決すべく鋭意検討を重
ねた結果、接続すべき冷媒配管の端部における断熱被覆
を除去したものを対向して溶接継手を形成してから両冷
媒配管の除去された断熱被覆端部間に注入口を持った筒
形治具を装着し、次いで前記注入口から２液混合型シリ
コーン系難燃性発泡剤を注入発泡せしめ上記した断熱被
覆端部間を発泡充填接続せしめることを特徴とする空調
用冷媒配管断熱被覆材の接合部補修工法、の採用により
該課題が解決されることを見出した。"Structure of the Invention" (Means for Solving the Problems) As a result of intensive studies to solve the above-mentioned problems, the present inventors have developed a system in which the heat insulating coating at the end of the refrigerant pipe to be connected is removed. After forming a welded joint facing each other, a cylindrical jig with an injection port is installed between the removed ends of the heat insulation coating of both refrigerant pipes, and then from the injection port, a two-component mixed silicone flame retardant We have found that this problem can be solved by employing a method for repairing joints of heat-insulating coatings for air conditioning refrigerant pipes, which is characterized by injecting and foaming a foaming agent and forming a foam filling connection between the ends of the heat-insulating coatings described above.
なお、本発明で用いられる２液混合型シリコーン系難発
泡剤は、硬化前において２５℃における粘度が５００〜
５０．０００ ｃＰの範囲の液状混合物である。Note that the two-component mixed silicone foaming agent used in the present invention has a viscosity of 500 to 25°C at 25°C before curing.
It is a liquid mixture in the range of 50.000 cP.
また、その硬化機構としては付加反応型或いは縮合反応
型の何れでもよく、発泡機構は水素発生してスポンジ化
するタイプのものが好ましい。このようなシリコーン系
発泡剤はすでに市販されているものが使用できる。Further, the curing mechanism may be either an addition reaction type or a condensation reaction type, and the foaming mechanism is preferably a type in which hydrogen is generated to form a sponge. As such silicone foaming agents, commercially available ones can be used.
（作用）
両冷媒配管の除去された断熱被覆端部間に筒形治具を装
着するものであるから、該治具は単に筒状のものでよ（
、適切に端部用にセットされる。(Function) Since a cylindrical jig is installed between the removed ends of the heat insulating coatings of both refrigerant pipes, the jig may simply be cylindrical (
, properly set for the ends.
該筒形治具の注入口から２液混合型シリコーン系難燃性
発泡剤を注入することにより、前記した断熱被覆端部間
において該シリコーン系発泡剤による的確な充填発泡が
得られる。By injecting the two-part mixed type silicone flame retardant foaming agent from the injection port of the cylindrical jig, accurate filling and foaming with the silicone foaming agent can be obtained between the ends of the heat insulating coating.
即ち単一の注入工程で７、段差や間隙を残すことのない
緊密な断熱被覆が充填形成される。In other words, in a single injection step 7, a tight thermal barrier coating is formed without leaving any steps or gaps.
（実施例）
本発明によるものの具体的な実施態様を添付図面に示す
ものについて説明すると、第１．２図に示すように、接
続すべき冷媒配管（１１の端部における断熱被覆（３）
を除去したものを対向させて溶接継手（２）を形成し、
このような断熱被覆（３＋、 （３）の端部間外側に筒
形の分割形式による治具（６）を装着して緊締手段（４
）で締着する。(Example) To explain the specific embodiment of the present invention shown in the attached drawings, as shown in Fig. 1.2, the heat insulating coating (3) at the end of the refrigerant pipe (11) to be connected
The removed parts are faced to form a welded joint (2),
A cylindrical split-type jig (6) is attached to the outer side between the ends of such a heat insulating coating (3+, (3)) to tighten the tightening means (4).
) to tighten.
上記のようにして治具（６）をセントしてから該治具（
６）の注入口（５）から常温硬化発泡タイプの２液混合
型シリコーン系難燃性発泡剤α呻を注入して発泡させ、
配管（１）の外側に発泡断熱被覆材（３ａ）を層着一体
化して形成する。After centering the jig (6) as described above, the jig (
6) Inject a two-component silicone flame-retardant foaming agent α that cures at room temperature through the injection port (5) and foam it.
A foamed heat insulating coating (3a) is integrally layered and formed on the outside of the pipe (1).
この難燃性常温シリコーンによる被覆材（３ａ）は、酸
素指数３１以上であり、米国ＵＬ規格［垂直トレイ式難
燃試験方法Ｊ （ＩＥＴ！Ｆ！ ｓｔｄ、 ３８３）
の規定に準じた試験でも、不燃に近い難燃性の評価を得
ることができた。又、このものは常温発泡であり、４゜
２液混合の液体タイプであるので、簡単な樹脂性形枠治
具（６）内に流し込んで、金属管（鋼管）と共に一体成
形することができる。This coating material (3a) made of flame-retardant room-temperature silicone has an oxygen index of 31 or more and complies with the U.S. UL standard [Vertical tray flame retardant test method J (IET! F! std, 383).
Even in tests in accordance with the regulations, we were able to obtain a flame retardant rating close to nonflammable. In addition, since this product is a liquid type that foams at room temperature and mixes two 4° liquids, it can be poured into a simple resin forming jig (6) and integrally molded with a metal pipe (steel pipe). .
上記のような２液混合タイプの発泡剤はチューブに収容
されたものを圧入し、あるいはガンに充填されたものを
注入することにより簡易に実施でき、・又それによって
形成された断熱発泡剤（３ａ）は断熱被覆（３）との間
に段差がなくて平滑な周面を形成し、勿論殊更に補修す
るような必要がない。即ち単純な注入操作のみで目的の
接合部補修を平易且つ的確に実施できる。The above-mentioned two-component mixture type foaming agent can be easily produced by press-fitting the foaming agent contained in a tube or by injecting the foaming agent filled into a gun, and the insulation foaming agent formed thereby ( 3a) forms a smooth circumferential surface with no step between it and the heat insulating coating (3), and of course there is no need for any special repair. In other words, the intended joint repair can be carried out easily and accurately with only a simple injection operation.
「発明の効果」
以上説明したような本発明によるときはこの種空調用冷
媒配管における継手部を簡易な治具と操作によって、的
確で周面に段差や凹凸ないし空隙を残すことのない状態
に補修し、又好ましい断熱性ないし難燃性を確保し得る
ものであり、工数が少なくて低コストであるなどの効果
を共に有しており、工業的にその効果の大きい発明であ
る。``Effects of the Invention'' According to the present invention as explained above, the joint portion of this type of air conditioning refrigerant piping can be accurately formed without leaving any steps, irregularities, or voids on the circumferential surface by using a simple jig and operation. It is an invention that can be repaired and ensure favorable heat insulation or flame retardancy, requires less man-hours and is low cost, and has great industrial effects.
図面の簡単な説明
図面は本発明の技術的内容を示すものであって、第１図
は本発明方法の実施状態を示した断面図、第２図はその
外観図、第３図は従来法によるものの斜面図である。BRIEF DESCRIPTION OF THE DRAWINGS The drawings show the technical contents of the present invention, and FIG. 1 is a cross-sectional view showing the implementation state of the method of the present invention, FIG. 2 is an external view thereof, and FIG. 3 is a conventional method. FIG.
然してこれらの図面において、（１）は金属管、（２）
はその溶接継手部、（３）は断熱被覆、（４）は緊締手
段、（５）は注入口、（６）は筒形治具を示すものであ
る。However, in these drawings, (1) is a metal tube, and (2)
(3) is a heat insulating coating, (4) is a tightening means, (5) is an injection port, and (6) is a cylindrical jig.
第１図 治−溶接継手 ｌ第３図Figure 1 Fixing - Welding joint Figure 3
Claims (1)
ものを対向して溶接継手を形成してから両冷媒配管の除
去された断熱被覆端部間に注入口を持った筒形治具を装
着し、次いで前記注入口から２液混合型シリコーン系難
燃性発泡剤を注入発泡せしめ上記した断熱被覆端部間を
発泡充填接続せしめることを特徴とする空調用冷媒配管
断熱被覆材の接合部補修工法。After removing the heat insulation coating at the ends of the refrigerant pipes to be connected, form a welded joint by facing each other, and then attach a cylindrical jig with an injection port between the ends of the refrigerant pipes from which the heat insulation coating was removed. Then, a two-component mixed type silicone-based flame retardant foaming agent is injected and foamed from the injection port to form a foam filling connection between the ends of the above-mentioned heat insulation coating. Construction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12423989A JPH02304300A (en) | 1989-05-19 | 1989-05-19 | Repairing method for connecting part of heat insulating covering material for air-conditioning refrigerant pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12423989A JPH02304300A (en) | 1989-05-19 | 1989-05-19 | Repairing method for connecting part of heat insulating covering material for air-conditioning refrigerant pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02304300A true JPH02304300A (en) | 1990-12-18 |
Family
ID=14880412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12423989A Pending JPH02304300A (en) | 1989-05-19 | 1989-05-19 | Repairing method for connecting part of heat insulating covering material for air-conditioning refrigerant pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02304300A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100652935B1 (en) * | 2005-04-22 | 2006-12-01 | 아이케이스틸 주식회사 | adiabatic pipe |
| WO2007048434A1 (en) * | 2005-10-29 | 2007-05-03 | Piflex P/S | Fluid line and method for its production |
-
1989
- 1989-05-19 JP JP12423989A patent/JPH02304300A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100652935B1 (en) * | 2005-04-22 | 2006-12-01 | 아이케이스틸 주식회사 | adiabatic pipe |
| WO2007048434A1 (en) * | 2005-10-29 | 2007-05-03 | Piflex P/S | Fluid line and method for its production |
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