JPH02203032A - Laying method for two or more heat insulating pipe lines - Google Patents
Laying method for two or more heat insulating pipe linesInfo
- Publication number
- JPH02203032A JPH02203032A JP1019694A JP1969489A JPH02203032A JP H02203032 A JPH02203032 A JP H02203032A JP 1019694 A JP1019694 A JP 1019694A JP 1969489 A JP1969489 A JP 1969489A JP H02203032 A JPH02203032 A JP H02203032A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- pipe
- insulating material
- inner pipe
- small
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 21
- 239000011810 insulating material Substances 0.000 claims abstract description 22
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000005187 foaming Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000009933 burial Methods 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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】
〔産業上の利用分野〕
本発明は地域冷暖房等に用いられる断熱管を少ない掘削
量で効率的に地中に敷設する断熱複数管路の敷設方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for laying multiple insulated pipes for use in district heating and cooling, etc., for efficiently laying them underground with a small amount of excavation.
近時都市部に限らず地方においても地域冷暖房を含めた
地域開発が盛んに行われているが、その配管施工は地上
の構造物上に配管する地上配管方式と共同溝や専用トレ
ンチ内に配管する埋設配管方式等が採用されるようにな
ったとはいうものの大部分は第７図、第８図にその一例
を示すように工場生産された管や断熱管を直接地中に埋
込む直接地下埋設方式が主流を占めている。In recent years, regional development including district heating and cooling has been actively carried out not only in urban areas but also in rural areas, but the piping construction is divided into above-ground piping methods in which piping is installed on structures above ground, and piping in common ditches or private trenches. Although buried piping methods have come to be adopted, most of them are directly underground, where factory-produced pipes and insulated pipes are directly buried underground, as shown in Figures 7 and 8. The buried method is the mainstream.
地上配管方式は敷設後のルート変更が容易であるという
利点があるが美観と地上スペース面で問題があり、共同
溝や専用トレンチを用いる埋設配管方式設備的には優れ
ているが専有面積が大きく工期・建設費用が嵩むという
欠点がある。The above-ground piping method has the advantage of being easy to change the route after installation, but it has problems in terms of aesthetics and ground space.The underground piping method, which uses a common trench or a dedicated trench, is superior in terms of equipment, but takes up a large area. The disadvantage is that the construction period and construction costs increase.
最も一般的な直接地下埋設方式は、経済的に優れている
が直接土圧または自動車荷重を受けるためケーシング管
の強度を高める必要があり、開削溝内に一定の間隔をお
いて埋設するので掘削溝幅が大きくなり土木工事量が増
大すると共にサービス管の数だけ埋設する作業は非能率
的である。The most common direct underground burial method is economically superior, but requires increased strength of the casing pipe as it receives direct earth pressure or vehicle loads, and it is buried at regular intervals in an open trench, making it difficult to excavate. As the trench width increases, the amount of civil engineering work increases, and it is inefficient to bury as many service pipes as there are service pipes.
これらの欠点を解決する手段として実開昭６３−９７３
３８号「多孔管」に示されるような管軸方向に複数の孔
を有する充填材を外管内部に配置した多孔管が提案され
ているが、この多孔管は複数の電線を配線するためのも
ので、外管同士を接合する際の位置合わせを円滑に行う
ため一端面に棒状体を植設し、他端面に棒状体に嵌合す
る孔を設けたもので強度面・気密性からも冷温水配管に
は適さず、埋設に時間がかかるという問題があった。As a means to solve these shortcomings,
A porous tube has been proposed in which a filling material having multiple holes in the tube axis direction is placed inside the outer tube, as shown in No. 38 "Porous Tube," but this porous tube is suitable for wiring multiple electric wires. In order to smoothly align the outer tubes when joining them, a rod-shaped body is implanted on one end surface, and a hole is provided on the other end surface to fit the rod-shaped body.From the viewpoint of strength and airtightness, There was a problem that it was not suitable for cold and hot water piping, and it took a long time to bury it.
本発明は、上述の従来技術がもつ問題点を解決する為の
複数管路の敷設方法であり、特に冷温熱を利用する断熱
複数管路の埋設作業を効率的に行うために開発したもの
でありその要旨は、予め大径外管の内部に複数の小径内
管の通孔を有する断熱材を内装したものを開削溝内に敷
設接合した後、前記小径内管通孔内に小径内管を順次挿
入接合する断熱複数管路の敷設方法にある。The present invention is a method for laying multiple conduits in order to solve the problems of the above-mentioned conventional technology, and was developed in particular to efficiently perform the work of burying insulated multiple conduits using cold and hot heat. The gist of this method is that a large diameter outer pipe is preliminarily lined with a heat insulating material having a plurality of small diameter inner pipe passage holes, and then the small diameter inner pipe is inserted into the small diameter inner pipe passage holes. There is a method of laying multiple insulated pipes in which pipes are inserted and joined in sequence.
更に本発明の大径外管内部に内装される断熱材はウレタ
ンもしくはスチロール樹脂などを工場プレハブとして発
泡充填したものであり、また小径内管は取扱い容易な樹
脂製の可撓性管を用いてもよく、更にまた小径内管は大
径外管敷設完了後敷設現場にて連続成形しつつ挿入され
る方法をとってもよい。Furthermore, the heat insulating material to be placed inside the large-diameter outer tube of the present invention is foam-filled with urethane or styrene resin as a factory prefabricated material, and the small-diameter inner tube is a flexible tube made of resin that is easy to handle. Alternatively, the small-diameter inner pipe may be continuously formed and inserted at the installation site after the installation of the large-diameter outer pipe is completed.
次に本発明の実施例を施工順序に従い第１図〜第６図に
基づいて説明する。Next, embodiments of the present invention will be described based on FIGS. 1 to 6 according to the construction order.
先ず工場にて大径外管１の内部につ１／タンやスチロー
ル樹脂等による断熱材２を充填させる。First, a heat insulating material 2 made of tan, styrene resin, or the like is filled inside the large-diameter outer tube 1 at a factory.
断熱材内部には、敷設現場にて内装する小径内管３を挿
入するための小径内管通孔４を予め形成しておく。断熱
材２を充填するには第４図にその１例を示す如く大径外
管１を挟みこむようにプレート５で大径外管１を盲にし
、かつ両プレート間を複数のボルト６とナツト７で締め
つけてシール性を高め１次に小径内管３用の通孔４を保
持するための中子８を両端のプレート５．５で支持密閉
し注入孔９からウレタンやスチロール樹脂等の断熱材２
を発泡充填させる。断熱材についてはウレタンとスチロ
ール樹脂を例示したが、保温性能があり成型し易いもの
であれば他の保温材等を用いてもよい。Inside the heat insulating material, a small-diameter inner pipe passage hole 4 is formed in advance for inserting the small-diameter inner pipe 3 to be installed at the installation site. To fill the heat insulating material 2, as shown in FIG. 4, the large-diameter outer tube 1 is blinded with plates 5 that sandwich the large-diameter outer tube 1, and a plurality of bolts 6 and nuts are inserted between the two plates. 7 to improve the sealing performance.Firstly, the core 8 for holding the through hole 4 for the small diameter inner tube 3 is supported and sealed by the plates 5.5 at both ends, and the injection hole 9 is insulated with urethane, styrene resin, etc. Material 2
Fill with foam. Although urethane and styrene resin are used as examples of heat insulating materials, other heat insulating materials may be used as long as they have heat retaining performance and are easy to mold.
第２図、第３図は大径外管１に断熱材２を充填した後の
断面構造を示したもので、第３図は大径外管１０強度を
さらに必要とする場合、補強部材ｌＯを断熱材２を充填
する前に連続あるいは断続して内設したもので、この補
強部材１０を内設することによって大径外管１の肉厚を
薄くすることも可能である。Figures 2 and 3 show the cross-sectional structure of the large-diameter outer tube 1 after it has been filled with the heat insulating material 2, and Figure 3 shows the large-diameter outer tube 10 in which reinforcing members lO are used when additional strength is required. is provided internally either continuously or intermittently before being filled with the heat insulating material 2, and by providing this reinforcing member 10 internally, it is also possible to reduce the wall thickness of the large diameter outer tube 1.
上述の如く工場生産された断熱材入り大径外管は第１図
に示すように、敷設現場の開削溝内に重機（図示せず。As shown in FIG. 1, the large-diameter outer pipe containing heat insulating material produced in the factory as described above is placed in an excavated trench at the installation site by heavy machinery (not shown).
）等により吊降ろし、複数の小径内管通孔４を芯合わせ
して連通させた後、密に接合する。接合方法は大径外管
１の材質によって異なり、鋼管の場合は突合わせ溶接、
鋳鉄管や合成樹脂管の場合はメカニカル継手接合、ヒユ
ーム管の場合はＪＩＳ＾−５３１５による石綿セメント
継手を採用すればよく、水密性を保持するものか加えて
地震等の外力に対して強度上満足するものであれば他の
接合方法を採用してもよい。) etc., and after aligning and communicating the plurality of small-diameter inner pipe passage holes 4, they are tightly joined. The joining method differs depending on the material of the large diameter outer pipe 1, and in the case of steel pipes, butt welding,
In the case of cast iron pipes and synthetic resin pipes, mechanical joints may be used, and in the case of humid pipes, asbestos cement joints according to JIS^-5315 may be used.In addition to maintaining watertightness, it is sufficient to use asbestos cement joints that are strong against external forces such as earthquakes. Other joining methods may be used as long as they are satisfactory.
このように一定区間に断熱材入り大径外管を敷設接合し
た後、第５図に示すように小径内管３を小径内管通孔４
に連続して挿入して施工を行う。After laying and joining the large-diameter outer pipe containing heat insulating material in a certain section in this way, the small-diameter inner pipe 3 is inserted into the small-diameter inner pipe through hole 4 as shown in FIG.
Construction is performed by continuously inserting the
第６図に示したものは、大径外管の施工完了後に折畳ん
だ袋状シート１１に樹脂を含浸させたものを水圧により
反転させながら小径内管通孔４に小径内管３を形成する
方法を例示したもので、より効率的に小径内管を挿入施
工するようにしたものである。What is shown in FIG. 6 is a folded bag-like sheet 11 impregnated with resin after the construction of the large-diameter outer pipe is completed, and is inverted by water pressure to form the small-diameter inner pipe 3 in the small-diameter inner pipe passage hole 4. This is an example of a method for inserting and constructing small-diameter inner pipes more efficiently.
本発明は、上述した工程にて断熱複数管路の敷設を行う
ので、従来の直接地下埋設方式に較べて掘削量も少なく
、工期も短縮される。In the present invention, since multiple insulated pipes are laid in the above-described steps, the amount of excavation is reduced and the construction period is shortened compared to the conventional direct underground burial method.
また、複数の小径内管が一定の間隔で大径外管内にコン
パクトに内装されるので。土圧に対する強度も増し大径
外管の肉厚を薄くすることや内管の材料選択も自由に行
なえるので材料費の節減にも寄与する。In addition, multiple small diameter inner tubes are compactly housed within the large diameter outer tube at regular intervals. The strength against earth pressure is increased, and the wall thickness of the large-diameter outer pipe can be made thinner, and the material for the inner pipe can be freely selected, which contributes to a reduction in material costs.
さらにＭ６図に例示した９袋状シートによる小径内管の
連続形成施工が可能となるので大幅な工期短縮も可能と
なる。Furthermore, since it becomes possible to continuously form small-diameter inner pipes using the nine bag-shaped sheets illustrated in Figure M6, it is also possible to significantly shorten the construction period.
第１図は本発明における大径外管を掘削溝内に敷設施工
する状態を示した斜視図、第２図、第３図は大径外管に
断熱材を充填した後の断面構造を示す正面図、第４図は
工場にて大径外管に断熱材を充填するための装置を示す
斜視図、第５図は仮設後の大径外管の小径内管通孔に小
径内管を挿入する状態図、第６図は大径外管の施工完了
後に小径内管を連続的に形成挿入する作業の概略図、第
７図、第８図は従来の直接地下埋設方式の例を示す配管
断面図であ・る。
１：大径外管 ２：断熱材 ３：小径内管 ４：小径内
管通孔 ５ニブレート ６：ボルト ７：ナツト ８：
中子 ９：注入孔 ｌＯ：補強部材１１；袋状シート
第６図
第
図
第
図
／
ん処〉・、
Ａぺ＼Fig. 1 is a perspective view showing the state in which a large diameter outer pipe according to the present invention is laid in an excavated trench, and Figs. 2 and 3 show a cross-sectional structure after the large diameter outer pipe is filled with a heat insulating material. Figure 4 is a front view, and Figure 4 is a perspective view showing the equipment for filling the large diameter outer pipe with insulation material at the factory. Figure 5 is a small diameter inner pipe inserted into the small diameter inner pipe hole of the large diameter outer pipe after temporary installation. Figure 6 is a schematic diagram of the process of continuously forming and inserting small-diameter inner pipes after the construction of large-diameter outer pipes is completed, and Figures 7 and 8 show examples of the conventional direct underground burial method. This is a cross-sectional view of the piping. 1: Large diameter outer tube 2: Insulation material 3: Small diameter inner tube 4: Small diameter inner tube through hole 5 Nibrate 6: Bolt 7: Nut 8:
Core 9: Injection hole 1O: Reinforcement member 11; Bag-shaped sheet
Claims (4)
する断熱材を内装したものを開削溝内に敷設接合した後
、前記小径内管通孔内に小径内管を順次挿入接合するこ
とを特徴とする断熱複数管路の敷設方法。(1) After laying and joining a large-diameter outer pipe with a heat insulating material having a plurality of small-diameter inner pipe holes inside the cut-out groove, the small-diameter inner pipes are sequentially inserted into the small-diameter inner pipe holes. A method for laying multiple insulated pipes characterized by insertion and joining.
ール樹脂等にて充填されたものである請求項（１）記載
の断熱複数管路の敷設方法。(2) The method for laying multiple heat-insulating pipes according to claim (1), wherein the heat insulating material inside the large-diameter outer tube is filled with urethane, styrene resin, or the like.
脂製の可撓性管である請求項（１）記載の断熱複数管路
の敷設方法。(3) The method for laying multiple insulated pipe lines according to claim (1), wherein the inner pipe inserted into the small diameter inner pipe passage hole in the heat insulating material is a flexible pipe made of resin.
径外管敷設完了後の敷設現場にて連続して形成する請求
項（１）記載の断熱複数管路の敷設方法。(4) Laying the insulated multiple pipe line according to claim (1), wherein the inner pipe inserted into the small-diameter inner pipe hole in the insulation material is formed continuously at the installation site after the large-diameter outer pipe has been laid. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1019694A JPH02203032A (en) | 1989-01-31 | 1989-01-31 | Laying method for two or more heat insulating pipe lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1019694A JPH02203032A (en) | 1989-01-31 | 1989-01-31 | Laying method for two or more heat insulating pipe lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02203032A true JPH02203032A (en) | 1990-08-13 |
| JPH0520637B2 JPH0520637B2 (en) | 1993-03-22 |
Family
ID=12006365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1019694A Granted JPH02203032A (en) | 1989-01-31 | 1989-01-31 | Laying method for two or more heat insulating pipe lines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02203032A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984234A (en) * | 1995-09-11 | 1997-03-28 | Kandenko Co Ltd | Burying method of multihole pipes by digging |
| JP2022504671A (en) * | 2018-10-15 | 2022-01-13 | エー．オン、スベリゲ、アクチボラグ | A method for filling a trench containing a pair of conduits, and such a filled trench. |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7740554B2 (en) * | 2005-10-14 | 2010-06-22 | T.M. Designworks, Llc | Motorcycle chain guide |
-
1989
- 1989-01-31 JP JP1019694A patent/JPH02203032A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0984234A (en) * | 1995-09-11 | 1997-03-28 | Kandenko Co Ltd | Burying method of multihole pipes by digging |
| JP2022504671A (en) * | 2018-10-15 | 2022-01-13 | エー．オン、スベリゲ、アクチボラグ | A method for filling a trench containing a pair of conduits, and such a filled trench. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0520637B2 (en) | 1993-03-22 |
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