JP2000213675A - Double-pipe connection joint and double-pipe insulated pipe connected with the joint - Google Patents
Double-pipe connection joint and double-pipe insulated pipe connected with the jointInfo
- Publication number
- JP2000213675A JP2000213675A JP11016036A JP1603699A JP2000213675A JP 2000213675 A JP2000213675 A JP 2000213675A JP 11016036 A JP11016036 A JP 11016036A JP 1603699 A JP1603699 A JP 1603699A JP 2000213675 A JP2000213675 A JP 2000213675A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- double
- tube
- flanges
- connection
- 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
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Thermal Insulation (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、内管と外管とから
なる二重管用接続継手、及びこの継手を用いて接続した
二重管式断熱配管、更に詳しくは継手間の内管と外管と
の空間を完全に独立させ、この空間を真空にするか、又
は断熱材を密封して断熱した二重管式断熱配管に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-pipe connection joint composed of an inner pipe and an outer pipe, and a double-pipe insulated pipe connected by using the coupling. The present invention relates to a double-pipe insulated pipe in which a space with a pipe is completely independent, and the space is evacuated or a heat insulating material is sealed and insulated.
【０００２】[0002]
【従来技術】工場内配管は省エネルギーや熱傷防止の観
点から保温断熱することが一般的である。図７の（ａ）
図は、従来の装置内配管や装置間配管の断熱保温を示し
た一部断面図であり、その（ｂ）図はＡ−Ａ方向から見
た図である。３１は配管本体で、３２はフェルール状の
接続継手、３３はフェルール３２を締め付けるためのク
ランプである。配管本体３１の表面には、ガラスウール
・ケイ酸カルシューム筒等の断熱保温材３４が巻き付け
てある。３５は保温断熱材３４を保護し、防水するため
の被覆材で、金属薄板又は防水樹脂シートである。すな
わち、断熱保温材３４の吸湿や吸水を防止するため、そ
の上に防水シートや金属薄板３５を被覆し防水加工を施
している。しかして、上記の防水が完全になされいない
場合は、断熱保温材が工場の操業条件により吸湿・乾燥
を繰り返し、その過程で熱エネルギー損失が生じ、また
配管資材の腐食が生じやすい。特に食品工場において
は、断熱保温材等の配管資材が細菌類繁殖の温床にもな
る。2. Description of the Related Art Generally, piping in a factory is insulated from the viewpoint of energy saving and prevention of burns. (A) of FIG.
FIG. 1 is a partial cross-sectional view showing a conventional heat insulation and heat retention of a piping in a device and a piping between devices, and FIG. 3B is a diagram viewed from an AA direction. 31 is a pipe main body, 32 is a ferrule-shaped connection joint, and 33 is a clamp for fastening the ferrule 32. A heat insulating material 34 such as a glass wool / calcium silicate tube is wound around the surface of the pipe body 31. Reference numeral 35 denotes a coating material for protecting and waterproofing the heat insulating material 34, which is a thin metal plate or a waterproof resin sheet. That is, in order to prevent moisture absorption or water absorption of the heat insulating / insulating material 34, a waterproof sheet or a thin metal plate 35 is coated thereon and subjected to waterproof processing. However, when the above waterproofing is not completely performed, the heat insulating and insulating material repeatedly absorbs and dries according to the operating conditions of the factory, and heat energy loss occurs in the process, and corrosion of the piping material easily occurs. In particular, in a food factory, piping materials such as a heat insulating material also serve as a breeding ground for bacteria propagation.
【０００３】かくして、省エネルギー的にも、衛生的な
工場環境を構築する上にも、完全防水型断熱保温工事が
必要となる。このため、配管を断熱保温材で被覆する工
事においては、断熱保温材が吸湿や吸水するのを防ぐ防
水効果を向上させるべく、断熱保温材の上に施工された
防水シートや金属薄板の合わせ目やこれらと配管の取り
合い部分に、コーキングして防水するか、或は完全に水
が入らないように溶接することが要請され、遂行されて
いるが、従来のこれらの防水工事はその完全性と労力・
経費との関係から最適な断熱保温システムとは言い難
く、そのため経済的且つ工場の操業条件・環境に左右さ
れない確実な断熱保温技術が必要とされている。[0003] Thus, in order to save energy and to establish a sanitary factory environment, it is necessary to provide a completely waterproof insulation and heat-insulating construction. For this reason, in the work of covering pipes with a heat insulating material, in order to improve the waterproofing effect of preventing the heat insulating material from absorbing and absorbing moisture, a joint of a waterproof sheet or a thin metal plate installed on the heat insulating material is required. It is required to perform caulking and waterproofing at the joints between them and the pipes, or to weld them so that they do not completely enter the water. effort·
It is hard to say that the system is optimal for heat insulation because of the cost. Therefore, there is a need for a reliable heat insulation technology that is economical and does not depend on the operating conditions and environment of the factory.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記の事情
に鑑みてなされたもので、断熱保温効果が良く、また省
エネルギーに寄与し且つ工場の衛生環境などの環境整備
にも寄与する断熱二重管配管、及びかかる断熱二重管の
配管に適する二重管用継手を提供することを目的とす
る。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, and has a heat insulating and heat insulating effect that is good, contributes to energy saving, and contributes to environmental maintenance such as a sanitary environment in a factory. It is an object of the present invention to provide a double pipe joint suitable for a heavy pipe pipe and a pipe for such an insulated double pipe.
【０００５】[0005]
【課題を解決するための手段】すなわち、本発明は、流
体を通す内管とこれを覆う外管とからなる二重管を接続
するための二重管用接続継手であって、一対のフランジ
からなり、各フランジは内管のみ連絡可能な連絡口を持
ち、且つ該連絡口外側に内管接続時に流体の漏洩を防止
するためのパッキン装着部を有することを特徴とする二
重管用接続継手である。この二重管用接続継手において
は、上記の一対のフランジの少なくとも一方の接続面の
パッキン装着部の外側に、更にパッキン装着部を設けて
もよい。また、前記した二重管用接続継手においては、
上記の一対のフランジのうちの片方のフランジの接続面
に凸面を形成し、他方のフランジの接触面に上記凸面に
嵌合する凹面を形成させてもよい。更に本発明は、前記
の二重管用接続継手を用いて接続した二重管式断熱配管
である。この二重管式断熱配管は流体を通す内管とこれ
を覆う外管とからなっており、この内管と外管とで形成
される密閉空間は真空であっても、断熱材で充填されて
いてもよい。That is, the present invention relates to a double pipe connecting joint for connecting a double pipe consisting of an inner pipe through which a fluid passes and an outer pipe which covers the inner pipe, comprising a pair of flanges. Each flange has a communication port that can communicate only with the inner pipe, and has a packing mounting portion on the outside of the communication port to prevent leakage of fluid when the inner pipe is connected. is there. In this double-pipe connection joint, a packing mounting portion may be further provided outside the packing mounting portion on at least one connection surface of the pair of flanges. In the above-described double pipe connection joint,
A convex surface may be formed on the connection surface of one of the pair of flanges, and a concave surface fitted to the convex surface may be formed on the contact surface of the other flange. Furthermore, the present invention is a double-pipe heat-insulated pipe connected using the above-described double-pipe connection joint. This double-pipe insulated pipe is composed of an inner pipe through which fluid passes and an outer pipe that covers the inner pipe.The sealed space formed by the inner pipe and the outer pipe is filled with a heat insulating material even in a vacuum. May be.
【０００６】[0006]
【発明の実施の形態】図１は、本発明の二重管用接続継
手の一例の断面図である。この二重管用接続継手は、一
対の円盤状のフランジからなる。図１の（ａ）図の１は
その一方のフランジであり、図１の（ｂ）図の２は他方
のフランジである。３、３’は各フランジに開けられた
貫通する孔である。４、４’は二重管の内管を挿入する
穴であり、内管は挿入後にフランジに溶接固定される。
また５、５’は二重管の外管を溶接するための縁であ
り、外管はこの縁に溶接されることによってフランジに
固定される。６、６’は接続時に接触する面である。そ
して、７、７’はパッキン装着部であり、接続時にＯリ
ングのようなパッキングが装填される。また８はパッキ
ン装着部７、７’の外側に更に設けたパッキン装着部で
ある。このパッキン装着部８は必要に応じて設け、各フ
ランジに設けてもよいが、この例においてはフランジ１
の方の接続時接触面にのみ設けられている。また、図２
は、本発明の二重管用接続継手の他の例の断面図であ
り、図２の（ａ）図の１はその一方のフランジであり、
図２の（ｂ）図の２は他方のフランジである。この例に
おいては、一方のフランジ１の接続時に接触する面には
凸面９が存在する。また、他方のフランジ２の接続時に
接触する面には凹面１０が存在し、上記凸面９と凹面１
０とは嵌合するようになっている。図２において、各符
号及びその意味は図１と同じである。FIG. 1 is a sectional view of an example of a joint for a double pipe according to the present invention. This double pipe connection joint comprises a pair of disk-shaped flanges. 1 in FIG. 1A is one of the flanges, and 2 in FIG. 1B is the other flange. Reference numerals 3 and 3 'denote through holes formed in each flange. Reference numerals 4 and 4 'denote holes for inserting the inner pipe of the double pipe, and the inner pipe is fixed to the flange by welding after the insertion.
Reference numerals 5, 5 'denote edges for welding the outer tube of the double tube, and the outer tube is fixed to the flange by being welded to this edge. Reference numerals 6 and 6 'are surfaces that come into contact at the time of connection. Reference numerals 7 and 7 'denote packing attachment portions, and packing such as an O-ring is loaded at the time of connection. Reference numeral 8 denotes a packing mounting portion further provided outside the packing mounting portions 7 and 7 '. This packing mounting portion 8 may be provided as necessary and may be provided on each flange.
Is provided only on the contact surface during connection. FIG.
FIG. 2 is a cross-sectional view of another example of the connection fitting for a double pipe of the present invention, wherein 1 in FIG.
2 in FIG. 2 (b) is the other flange. In this example, there is a convex surface 9 on the surface that comes into contact when one of the flanges 1 is connected. In addition, a concave surface 10 is present on the surface that contacts the other flange 2 at the time of connection, and the convex surface 9 and the concave surface 1
0 is fitted. In FIG. 2, each symbol and its meaning are the same as those in FIG.
【０００７】本発明の二重管用接続継手は、鋼鉄製や合
成樹脂製である。金属や合成樹脂の円盤状物を機械加工
することによって容易に得られる。また合成樹脂を押出
し成形や射出成形して製造することもできる。作成は、
例えば次のようにする。先ず、一対の円盤状の金属製フ
ランジのそれぞれに、穿孔によって、二重管の外管を溶
接するための外管の径に等しい縁５、５’を形成する。
次いで同心円状に二重管の内管を挿入するための内管の
外径に等しい穴４、４’を開ける。最後に、内管の内径
に等しい径の孔３、３’を開ける。この孔３、３’がフ
ランジ１、２を接続したときの連絡口となる。また、配
管を接続した使用時に、内管を流れる流体の漏れを完全
に防止するため、必要な締付力を留保できるような形状
のパッキンが装着きできる溝７、７’を、孔３、３’の
周辺近傍に、中心位置を合わせて形成する。更に、上記
パッキン溝７、７’を形成した表面と同じ面に、内管接
続の漏れを二重に防止することと、外部から侵入する異
物を内部に侵入させないための、防御パッキンを装着で
きるパッキン溝８を、中心位置を合わせて形成する。こ
の溝８は、外管径が位置するとほぼ等しい位置に形成す
るのが好ましい。[0007] The connection joint for a double pipe of the present invention is made of steel or synthetic resin. It is easily obtained by machining a metal or synthetic resin disk. It can also be manufactured by extrusion or injection molding of a synthetic resin. Creation is
For example, First, in each of a pair of disk-shaped metal flanges, a rim 5, 5 'having a diameter equal to the diameter of the outer tube for welding the outer tube of the double tube is formed by drilling.
Next, holes 4, 4 'having the same outer diameter as the inner tube for inserting the inner tube of the double tube are formed concentrically. Finally, holes 3, 3 'having a diameter equal to the inner diameter of the inner tube are opened. The holes 3 and 3 'serve as communication ports when the flanges 1 and 2 are connected. Also, in order to completely prevent leakage of the fluid flowing through the inner pipe when the pipe is connected, the grooves 7, 7 'in which the packing having a shape capable of retaining a necessary tightening force can be attached are formed in the holes 3, 7'. The center position is formed near the periphery of 3 '. Furthermore, on the same surface as the surface on which the packing grooves 7, 7 'are formed, it is possible to install a protective packing for preventing leakage of the connection of the inner pipe and preventing foreign substances from entering from entering the inside. The packing groove 8 is formed so as to align the center position. This groove 8 is preferably formed at a position substantially equal to the diameter of the outer tube.
【０００８】図１、図２は本発明に係る二重管用接続継
手の断面図であるが、その素材、寸法の例を上げる。
１、２は、材質がステンレス（ＳＵＳ３０４）で外径７
７．５φ、幅２１ｍｍのフェル−ル型フランジを機械加
工して製作したものである。連絡口３、３’の外側に、
外径３８．１φの内管を挿入できる穴４、４’と外径６
０．５φの外管を突合せ溶接できる縁５、５’が形成さ
れている。パッキン溝７、７’は外径４３．２５φの位
置に設けた溝であり、パッキン溝８は外径７０．５φの
位置に設けた溝である。FIGS. 1 and 2 are cross-sectional views of a connecting joint for a double pipe according to the present invention.
1 and 2 are made of stainless steel (SUS304) and have an outer diameter of 7
It is manufactured by machining a Ferrule type flange with a diameter of 7.5φ and a width of 21 mm. Outside the contact 3, 3 '
Holes 4 and 4 'for inserting an inner pipe with an outer diameter of 38.1φ and an outer diameter of 6
Edges 5, 5 'are formed to butt-weld the outer pipe of 0.5φ. The packing grooves 7, 7 'are grooves provided at a position of an outer diameter of 43.25φ, and the packing grooves 8 are grooves provided at a position of an outer diameter of 70.5φ.
【０００９】次に、本発明の二重管用接続継手の使用例
について説明する。図３は図２に示した二重管用接続継
手のそれぞれのフランジに内管及び外管を溶接固定して
ときの状態を示す断面図である。１１、１１’は内管、
１２、１２’は外管である。１３、１３’は内管１１、
１１’とフランジ１、２とのそれぞれの溶接部であり、
１４、１４’は外管１２、１２’とフランジ１、２との
それぞれの溶接部である。外管１２、１２’とフランジ
１、２とのそれぞれの溶接は、フランジ１、２にそれぞ
れ設けた縁５、５’の個所で行なうが、この溶接は図３
の如く突合せ溶接でも、外管１２、１２’に縁５、５’
を挿入させて溶接してもよい。この図３は内管及び外管
のそれぞれの一端のみにフランジを溶接固定した状態を
示すが、それぞれの内管及び外管の他端にも同様にして
フランジを溶接固定する。この場合、内管及び外管から
なる二重管の両端に同種のフランジ例えばフランジ１又
は２を溶接してもよいし、また二重管の両端に異種のフ
ランジすなわちフランジ１と２を溶接してもよい。Next, an example of use of the double pipe connection joint of the present invention will be described. FIG. 3 is a cross-sectional view showing a state where the inner pipe and the outer pipe are welded and fixed to the respective flanges of the double pipe connection joint shown in FIG. 11, 11 'are inner tubes,
12, 12 'are outer tubes. 13, 13 'is the inner tube 11,
11 ′ and the respective welded portions of the flanges 1 and 2,
Reference numerals 14 and 14 'denote welding portions of the outer pipes 12 and 12' and the flanges 1 and 2, respectively. The welding of the outer tubes 12, 12 'and the flanges 1, 2 is performed at the edges 5, 5' provided on the flanges 1, 2, respectively.
Butt welding as shown in FIG.
May be inserted and welded. FIG. 3 shows a state in which the flange is welded and fixed to only one end of each of the inner pipe and the outer pipe. The flange is similarly welded and fixed to the other end of each of the inner pipe and the outer pipe. In this case, the same kind of flange, for example, flange 1 or 2, may be welded to both ends of the double pipe consisting of the inner pipe and the outer pipe, or different kinds of flanges, ie, flanges 1 and 2, may be welded to both ends of the double pipe. You may.
【００１０】図４は、上記の如くして二重管を溶接固定
したフランジ１、２を接続させた状態を示す。この接続
は、フランジ１、２のパッキン装着部の溝７、７’にＯ
リング１５を装填し、またフランジ１のパッキン装着部
の溝８にもＯリング１６を装填し、次いでフランジ１、
２を接合し、その後フランジ１、２を締め付ける。この
フランジの締付方法は、締め付け力が十分に留保できる
ような構造が必要であり、ボルト締め方式やフェルール
クランプ方式が適当である。図４は、フェルールクラン
プ１７を用いて締め付けた状態を示す。また、図２に示
す構造のフランジを用いた場合には、図４に示すよう
に、凸面９の高さと凹面１０の深さとを調整することに
よって、溝７、７’に装填したパッキンと溝８に装填し
たパッキンとの間に間隙１８を作ることができる。そし
て、この間隙１８を利用して、内管の漏れを検知する検
知口（図示せず）をフランジに設けることが出来る。ま
たこの検知口を利用して無菌シールシステムを構築する
ことも可能である。また、上記の例ではパッキン装着部
にＯリングを装填しているが、同心円状の平板パッキン
を用いてもよい。同心円状の平板パッキンを用いる場合
は、フランジ１とフランジ２が接続時に接する面に装填
するが、その場合フランジの接触面には溝は設けても、
設けなくてもよい。FIG. 4 shows a state in which the flanges 1 and 2 to which the double pipe is welded and fixed as described above are connected. This connection is made by inserting grooves 7 and 7 'in the packing mounting portions of the flanges 1 and 2 with O.
The ring 15 is loaded, and the O-ring 16 is also loaded into the groove 8 of the packing mounting portion of the flange 1.
2 and then the flanges 1 and 2 are tightened. The method for fastening the flange requires a structure capable of sufficiently retaining the fastening force, and a bolt fastening method or a ferrule clamping method is appropriate. FIG. 4 shows a state in which the ferrule is fastened using the ferrule clamp 17. When the flange having the structure shown in FIG. 2 is used, as shown in FIG. 4, by adjusting the height of the convex surface 9 and the depth of the concave surface 10, the packing and the groove loaded in the grooves 7, 7 'can be formed. A gap 18 can be created between the packing 8 and the packing. Using the gap 18, a detection port (not shown) for detecting leakage of the inner pipe can be provided in the flange. It is also possible to construct a sterile seal system using this detection port. In the above example, the O-ring is mounted on the packing mounting portion, but a concentric flat packing may be used. When a concentric flat plate packing is used, the flange 1 and the flange 2 are loaded on a surface where they come into contact at the time of connection.
It is not necessary to provide it.
【００１１】上記の如くして接続した内管と外管とから
なる二重管においては、外管と内管との間隙は、その両
端が各フランジで封鎖されるので、密閉された空間にな
る。しかして、この外管と内管との間に形成される密閉
空間を利用してその断熱保温効果を高めることができ
る。図５は、その二重管式断熱配管の一例を示した断面
図である。内管１１と外管１２との間隙１９はその両端
がフランジ２、２で封鎖されている。この例において
は、外管に真空引き口２０を設け、この真空引き口２０
から吸引して、内管と外管との間の密閉空間の空気を吸
引し、減圧し、ほぼ真空にして断熱効果の向上をはか
る。２１は伸縮ベローズであり、内管及び外管の温度変
化による伸縮を吸収し、二重管の温度変化による応力を
緩和する。[0011] In the double pipe composed of the inner pipe and the outer pipe connected as described above, the gap between the outer pipe and the inner pipe is closed at both ends by respective flanges, so that the space is tightly closed. Become. Thus, the heat insulation effect can be enhanced by utilizing the closed space formed between the outer tube and the inner tube. FIG. 5 is a cross-sectional view showing an example of the double-pipe heat insulating pipe. Both ends of the gap 19 between the inner pipe 11 and the outer pipe 12 are closed by flanges 2 and 2. In this example, a vacuum port 20 is provided in the outer tube, and the vacuum port 20 is provided.
The air in the closed space between the inner tube and the outer tube is suctioned, and the pressure is reduced to almost a vacuum to improve the heat insulating effect. Reference numeral 21 denotes an expansion / contraction bellows, which absorbs expansion and contraction caused by temperature changes of the inner tube and the outer tube, and reduces stress caused by temperature changes of the double tube.
【００１２】上記の如くして接続した二重管の外管と内
管との間隙の断熱性を保持する他の方法として、この間
隙に断熱保温材を充填して断熱保温効果を上げることが
できる。この断熱保温材には硝子繊維や鉱物繊維の織布
や不織布、粉末状断熱材、粒状断熱材等が用いられる。
特に、硝子繊維及び／又は鉱物繊維からなる厚さ０．１
ｍｍ〜５０ｍｍ、密度１Ｋｇ／ｍ3〜２５０Ｋｇ／ｍ3の
不織布層と、厚さ０．００１ｍｍ〜０．５ｍｍの金属箔
層又は該金属箔に硝子繊維織物を貼着した層とを、各層
が交互に且つ２層以上存在するように積層したものが好
ましく用いられる（特願平１０−２７０３４８号）。図
６はその一例を示した一部断面図である。図６において
２２は断熱保温材であり、密度２００ｋｇ／ｍ3、厚み
約３ｍｍの硝子繊維不織布の片面に厚さ０．０２ｍｍの
アルミニウム箔を張り付けた積層物を重ねて巻いたもの
である。断熱保温材に硝子繊維や鉱物繊維の織布や不織
布などを用いた場合には、前記した密閉空間の空気を吸
引し減圧する断熱性付与と併用してもよい。As another method of maintaining the heat insulation of the gap between the outer pipe and the inner pipe of the double pipe connected as described above, this gap is filled with a heat insulating material to improve the heat insulating effect. it can. As the heat insulating material, woven or nonwoven fabric of glass fiber or mineral fiber, powder heat insulating material, granular heat insulating material, or the like is used.
In particular, a thickness of 0.1 made of glass fiber and / or mineral fiber
Mm～50mm, and the nonwoven fabric layer density 1Kg / m 3 ~250Kg / m 3 , and a layer obtained by adhering a thickness 0.001mm~0.5mm metal foil layer or the metal foil to the glass fiber fabric, each layer Those laminated alternately and so as to have two or more layers are preferably used (Japanese Patent Application No. 10-270348). FIG. 6 is a partial cross-sectional view showing one example. In FIG. 6, reference numeral 22 denotes a heat insulating material, which is formed by laminating a laminate in which a 0.02 mm-thick aluminum foil is adhered to one surface of a glass fiber nonwoven fabric having a density of 200 kg / m 3 and a thickness of about 3 mm. When a woven fabric or nonwoven fabric of glass fiber or mineral fiber is used as the heat insulating material, it may be used in combination with the above-mentioned heat insulating material for sucking air in the closed space and reducing the pressure.
【００１３】上記の例のように層状の断熱保温材を用い
る場合は、先ず内管の一方の端にフランジを溶接固定
し、次いで内管の上に断熱保温材層を捲回などにより設
け、その上に外管を被せ、この外管の一端を内管を溶接
固定したフランジの所定の位置に溶接固定し、最後に内
管及び外管の他端にフランジを溶接固定して二重管式断
熱配管を作成する。また、粉末状断熱材、粒状断熱材等
の不定形の断熱保温材を用いる場合は、先ずフランジに
内管及び外管の一端を溶接固定し、次いで内管と外管の
間隙に粉末状断熱材又は粒状断熱材を充填し、その後に
内管及び外管の他端にフランジを溶接固定して二重管式
断熱配管を作成する。When a layered heat insulating material is used as in the above example, a flange is first fixed to one end of the inner tube by welding, and then a heat insulating material layer is provided on the inner tube by winding or the like. An outer tube is put on the outer tube, one end of the outer tube is welded and fixed to a predetermined position of the flange to which the inner tube is welded, and finally, the flanges are welded and fixed to the other ends of the inner tube and the outer tube. Create a thermal insulation pipe. When using an insulated heat insulating material such as powdered heat insulating material or granular heat insulating material, first fix one end of the inner tube and the outer tube to the flange by welding, and then install the powdered heat insulating material in the gap between the inner tube and the outer tube. Material or granular heat insulating material is filled, and then a flange is welded and fixed to the other end of the inner pipe and the outer pipe to form a double-pipe heat insulating pipe.
【００１４】上記のように両端に継手用フランジを溶接
固定した二重管式断熱配管は、これを接続することによ
って所定の長さの配管を施工することができる。また、
この断熱性を付与した二重管式断熱配管は、エルボ・Ｔ
管・直管等に部品としてモジュール化して工場で生産す
ることができる。そして、これらを施工現場で所定の形
状に組み立てることによって、施工現場で断熱保温材の
取り付け施工すること無く、容易に断熱配管を施工する
ことができる。As described above, the double-pipe type heat-insulated pipe having the joint flanges welded and fixed to both ends can be connected to form a pipe of a predetermined length. Also,
This double-pipe type heat-insulated pipe with heat insulation is an elbow T
It can be modularized into parts such as pipes and straight pipes and can be produced at factories. Then, by assembling them into a predetermined shape at the construction site, it is possible to easily install the heat-insulating pipe without mounting and installing the heat insulating material at the construction site.
【００１５】[0015]
【発明の効果】本発明の二重管用接続継手を用いると、
内管と外管に挟まれた空間を完全に独立させ、密閉空間
を形成させた二重配管を行なうことができる。そして、
この空間を真空にするか、又は断熱保温材を充填するこ
とによって、効率のよい断熱性を有する二重管式断熱配
管を製造することができる。また、内管と外管に挟まれ
た空間を完全に独立させ、密閉空間を形成させ、この空
間に断熱保温材を充填したから、断熱保温材が吸湿する
ことなく、二重管外部の汚染環境に影響されない衛生的
な且つ省エネルギーの断熱配管システムを構築すること
ができる。また、当該二重管式断熱配管をエルボ・Ｔ管
・直管等を部品としてモジュール化し、現場の配管作業
を省力化し、併せて施工現場での保温施工を排除し労力
を省力化する配管システムを構築するものである。The use of the double pipe connection joint of the present invention provides
The space between the inner pipe and the outer pipe is completely independent, and a double pipe forming a closed space can be formed. And
By evacuating the space or filling the space with a heat insulating material, a double-pipe heat insulating pipe having efficient heat insulating properties can be manufactured. In addition, the space between the inner tube and the outer tube is completely independent, forming a sealed space, and this space is filled with a heat insulating material. A sanitary and energy-saving heat-insulated piping system that is not affected by the environment can be constructed. In addition, this double-pipe insulated pipe is modularized into elbows, T pipes, straight pipes, etc. as parts, thereby saving labor on-site piping work, and at the same time, eliminating the need for heat-retaining work at the construction site and saving labor. Is to build.
【図１】本発明の二重管用接続継手の一例の断面図FIG. 1 is a cross-sectional view of an example of a double pipe connection joint of the present invention.
【図２】本発明の二重管用接続継手の他の例の断面図FIG. 2 is a sectional view of another example of the connection fitting for a double pipe according to the present invention.
【図３】本発明の二重管用接続継手を内管及び外管に固
定した状態を示す断面図FIG. 3 is a cross-sectional view showing a state in which the double pipe connection joint of the present invention is fixed to an inner pipe and an outer pipe.
【図４】本発明の二重管用接続継手を用いて二重管を接
続したときの断面図FIG. 4 is a sectional view when a double pipe is connected using the double pipe connection joint of the present invention.
【図５】本発明の二重管用接続継手を用いた二重管式断
熱配管の一例の一部断面図FIG. 5 is a partial cross-sectional view of an example of a double-pipe insulated pipe using the double-pipe connection joint of the present invention.
【図６】本発明の二重管用接続継手を用いた二重管式断
熱配管の他の例の一部断面図FIG. 6 is a partial cross-sectional view of another example of a double-pipe insulated pipe using the double-pipe connection joint of the present invention.
【図７】従来の断熱保温配管の一部断面図FIG. 7 is a partial cross-sectional view of a conventional heat-insulating pipe.
１ 二重管用接続継手の一方のフランジ、２ 二重管用
接続継手の他方のフランジ、３，３’ 連絡口、４，
４’ 内管挿入用穴、５，５’ 外管溶接用縁、７，
７’，８ パッキン装填用溝、１１，１１’ 内管、１
２，１２’ 外管、１３，１３’ 内管溶接部、１４，
１４’ 外管溶接部、１５，１６ Ｏリング１７ フェ
ールクランプ、１８ 間隙、２０ 空気吸引口、２１
伸縮ベローズ、２２ 断熱保温材1 One flange of a double pipe connection joint, 2 The other flange of a double pipe connection joint, 3, 3 'communication port, 4,
4 'inner tube insertion hole, 5,5' outer tube welding edge, 7,
7 ', 8 packing groove, 11, 11' inner tube, 1
2,12 'outer pipe, 13,13' inner pipe weld, 14,
14 'outer tube weld, 15, 16 O-ring 17 fail clamp, 18 gap, 20 air suction port, 21
Telescopic bellows, 22 thermal insulation
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3H016 CA01 3H036 AA04 AB33 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 3H016 CA01 3H036 AA04 AB33
Claims (6)
る二重管を接続するための二重管用接続継手であって、
一対のフランジからなり、各フランジは内管のみ連絡可
能な連絡口を持ち、且つ該連絡口の外側に流体の漏洩を
防止するためのパッキン装着部を有することを特徴とす
る二重管用接続継手。1. A double pipe connection joint for connecting a double pipe consisting of an inner pipe through which a fluid passes and an outer pipe covering the inner pipe,
A connection joint for a double pipe, comprising a pair of flanges, each flange having a communication port capable of communicating only with the inner pipe, and having a packing mounting portion for preventing fluid leakage outside the communication port. .
て、一対のフランジの少なくとも一方の接続面のパッキ
ン装着部の外側に、更にパッキン装着部を設けたことを
特徴とする二重管用接続継手。2. The connection for a double pipe according to claim 1, further comprising a packing mounting portion provided on at least one connection surface of the pair of flanges outside the packing mounting portion. Fittings.
接続面に凸面を形成し、他方のフランジの接触面に上記
凸面に嵌合する凹面を形成させたことを特徴とする請求
項１又は２記載の二重管用接続継手。3. The method according to claim 1, wherein a convex surface is formed on a connecting surface of one of the pair of flanges, and a concave surface is formed on a contact surface of the other flange so as to fit with the convex surface. 2. The connection fitting for a double pipe according to 2.
る二重管を請求項１〜３項のいずれかに記載の二重管用
接続継手を用いて接続した二重管式断熱配管。4. A double-pipe type heat insulation in which a double pipe consisting of an inner pipe through which a fluid passes and an outer pipe covering the same is connected using the double pipe connection joint according to any one of claims 1 to 3. Piping.
にした請求項４項の記載の二重管式断熱配管。5. The double-pipe insulated pipe according to claim 4, wherein a closed space formed by the inner pipe and the outer pipe is evacuated.
材を充填した請求項４項の記載の二重管式断熱配管。6. The double-pipe insulated pipe according to claim 4, wherein a heat-insulating material is filled in a closed space formed by the inner pipe and the outer pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11016036A JP2000213675A (en) | 1999-01-25 | 1999-01-25 | Double-pipe connection joint and double-pipe insulated pipe connected with the joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11016036A JP2000213675A (en) | 1999-01-25 | 1999-01-25 | Double-pipe connection joint and double-pipe insulated pipe connected with the joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000213675A true JP2000213675A (en) | 2000-08-02 |
Family
ID=11905367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11016036A Pending JP2000213675A (en) | 1999-01-25 | 1999-01-25 | Double-pipe connection joint and double-pipe insulated pipe connected with the joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000213675A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011208665A (en) * | 2010-03-29 | 2011-10-20 | Ckd Corp | Vacuum double pipe, and connected structure of the same |
| KR101174865B1 (en) | 2011-02-14 | 2012-08-17 | (유)성문 | Gas pipe for ship and manufacturing method of the same |
| US8590942B2 (en) | 2010-03-29 | 2013-11-26 | Ckd Corporation | Connected structure of vacuum double pipe, vacuum double pipe, and joint of vacuum double pipe |
| KR101379005B1 (en) * | 2012-04-27 | 2014-04-02 | 삼성중공업 주식회사 | Pipeline |
| JP2015224352A (en) * | 2014-05-26 | 2015-12-14 | Ｊｆｅスチール株式会社 | Injection lance apparatus |
| JP2016180467A (en) * | 2015-03-24 | 2016-10-13 | イハラサイエンス株式会社 | Double pipe structure and joint thereof |
| JP2018071600A (en) * | 2016-10-26 | 2018-05-10 | トヨタ自動車株式会社 | Vacuum insulated double tube structure |
| JP2018135916A (en) * | 2017-02-21 | 2018-08-30 | 日野自動車株式会社 | Double insulated pipe and method for producing the same |
| JP2019173836A (en) * | 2018-03-28 | 2019-10-10 | 国立大学法人神戸大学 | Double structure pipe and manufacturing method of pipeline system |
| CN115930002A (en) * | 2022-12-26 | 2023-04-07 | 北京星航机电装备有限公司 | A machined joint and vacuum double-layer pipeline and its preparation method |
| CN115958274A (en) * | 2022-12-26 | 2023-04-14 | 北京星航机电装备有限公司 | Aluminum alloy double-layer pipeline and preparation method thereof |
| CN116928493A (en) * | 2023-07-18 | 2023-10-24 | 廊坊华宇天创能源设备有限公司 | Prefabricated heat-preservation pipeline through-wall sealing pipe fitting and manufacturing method thereof |
-
1999
- 1999-01-25 JP JP11016036A patent/JP2000213675A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011208665A (en) * | 2010-03-29 | 2011-10-20 | Ckd Corp | Vacuum double pipe, and connected structure of the same |
| US8590942B2 (en) | 2010-03-29 | 2013-11-26 | Ckd Corporation | Connected structure of vacuum double pipe, vacuum double pipe, and joint of vacuum double pipe |
| KR101174865B1 (en) | 2011-02-14 | 2012-08-17 | (유)성문 | Gas pipe for ship and manufacturing method of the same |
| KR101379005B1 (en) * | 2012-04-27 | 2014-04-02 | 삼성중공업 주식회사 | Pipeline |
| JP2015224352A (en) * | 2014-05-26 | 2015-12-14 | Ｊｆｅスチール株式会社 | Injection lance apparatus |
| JP2016180467A (en) * | 2015-03-24 | 2016-10-13 | イハラサイエンス株式会社 | Double pipe structure and joint thereof |
| JP2018071600A (en) * | 2016-10-26 | 2018-05-10 | トヨタ自動車株式会社 | Vacuum insulated double tube structure |
| JP2018135916A (en) * | 2017-02-21 | 2018-08-30 | 日野自動車株式会社 | Double insulated pipe and method for producing the same |
| JP2019173836A (en) * | 2018-03-28 | 2019-10-10 | 国立大学法人神戸大学 | Double structure pipe and manufacturing method of pipeline system |
| JP7129689B2 (en) | 2018-03-28 | 2022-09-02 | 国立大学法人神戸大学 | Double structure pipe and method for manufacturing piping system |
| CN115930002A (en) * | 2022-12-26 | 2023-04-07 | 北京星航机电装备有限公司 | A machined joint and vacuum double-layer pipeline and its preparation method |
| CN115958274A (en) * | 2022-12-26 | 2023-04-14 | 北京星航机电装备有限公司 | Aluminum alloy double-layer pipeline and preparation method thereof |
| CN115930002B (en) * | 2022-12-26 | 2025-10-21 | 北京星航机电装备有限公司 | A machined joint and vacuum double-layer pipeline and preparation method thereof |
| CN116928493A (en) * | 2023-07-18 | 2023-10-24 | 廊坊华宇天创能源设备有限公司 | Prefabricated heat-preservation pipeline through-wall sealing pipe fitting and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5200015A (en) | Joining process for vacuum heat insulating elements | |
| DE69931274D1 (en) | VACUUM-INSULATED PIPING | |
| US6978807B1 (en) | Water stop for a line installation in a pre-insulated pipeline | |
| CN211976562U (en) | Device for monitoring long heat transmission network directly-buried steam heat-preservation pipe | |
| US20070152440A1 (en) | Pipe sealing system | |
| JP2001041390A (en) | Vacuum insulated pipe for fluid transport pipe and pipe support method | |
| CN216813447U (en) | Heating power pipe network insulation structure | |
| CN218326625U (en) | An assembled biodegradable ventilation duct | |
| JPH01214626A (en) | Vacuum double pipe | |
| CN101956887A (en) | Vacuum transmission pipe and connecting structure thereof | |
| CN101943298B (en) | Vacuum composite delivery pipe and connecting structure | |
| CN115468040A (en) | Assembled biodegradable ventilation pipeline | |
| CN215293923U (en) | Large-diameter prefabricated direct-buried heat-insulation pipe | |
| CN218348185U (en) | Internal heat-insulation air pipe | |
| CN223825827U (en) | Double sleeve connector and outer sleeve | |
| CN222911039U (en) | Leak-proof pipe connection device | |
| CN223895495U (en) | Anti-freezing heat-insulation structure of polyethylene composite pipeline | |
| CN223677192U (en) | Chemical pipeline capable of preventing leakage | |
| CN224245766U (en) | Building water supply and drainage pipeline dew-proof structure | |
| KR910005062B1 (en) | Insulation cover for insulation and cold insulation of boiler and air conditioner pipe | |
| JPH0128394Y2 (en) | ||
| CN214999884U (en) | Heat-resistant polyethylene prefabricated direct-buried heat-insulation pipe | |
| CN219389043U (en) | Prefabricated insulation cover of pipeline | |
| CN222513791U (en) | A composite thermal insulation steel pipe structure | |
| CN212390388U (en) | Thermal expansion absorption device for flue gas duct and flue gas duct system |