JP2020112253A - Double-pipe joint structure - Google Patents

Double-pipe joint structure Download PDF

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JP2020112253A
JP2020112253A JP2019005390A JP2019005390A JP2020112253A JP 2020112253 A JP2020112253 A JP 2020112253A JP 2019005390 A JP2019005390 A JP 2019005390A JP 2019005390 A JP2019005390 A JP 2019005390A JP 2020112253 A JP2020112253 A JP 2020112253A
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pipe
sleeve
joint structure
inner pipe
tube
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JP7153925B2 (en
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進一 淺田
Shinichi Asada
進一 淺田
寺田　佳弘
Yoshihiro Terada
佳弘 寺田
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Victaulic Company of Japan Ltd
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Victaulic Company of Japan Ltd
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Abstract

To reliably prevent fluid flowing through piping from running off outward.SOLUTION: A double-pipe joint structure 1 includes: outer piping 10 having a first outer pipe 11, an outer sleeve 15 and a second outer pipe 12; and inner piping 20 having a first inner pipe 21, an inner sleeve 25 and a second inner pipe 22. The first outer pipe 11 is connected to the first inner pipe 21. The second outer pipe 12 is connected to the second inner pipe 22.SELECTED DRAWING: Figure 1

Description

本開示は一方の配管と他方の配管と、これら一方の配管および他方の配管を接続するスリーブとを有する継手構造に係り、とりわけ一方の配管および他方の配管を流れる流体が外方へ流出することを防止することができ、かつ外部の流体が配管内に流入することがない、二重管継手構造に関する。 The present disclosure relates to a joint structure having one pipe, the other pipe, and a sleeve that connects the one pipe and the other pipe, and in particular, the fluid flowing in the one pipe and the other pipe flows out. The present invention relates to a double pipe joint structure capable of preventing the above and preventing external fluid from flowing into the pipe.

従来より、一方の配管と、他方の配管と、これら一方の配管および他方の配管を接続するスリーブとを有する継手構造が知られている。 Conventionally, a joint structure having one pipe, the other pipe, and a sleeve connecting the one pipe and the other pipe is known.

また一方の配管とスリーブとの間、および他方の配管とスリーブとの間は、シールゴムリングにより密封されている。 A seal rubber ring seals between one pipe and the sleeve and between the other pipe and the sleeve.

このような継手構造は、排水等を送出する等のように種々の流体の搬送が行なわれている。 In such a joint structure, various fluids are carried such as sending out drainage and the like.

ところでこのような構成からなる継手構造は、地震等の影響により経年変化によりずれていくことがある。 By the way, the joint structure having such a structure may shift due to secular change due to the influence of an earthquake or the like.

そして継手構造にずれが生じた場合、一方の配管と他方の配管内を流れる流体が外方へ漏水することも考えられる。 When the joint structure is displaced, the fluid flowing in the one pipe and the other pipe may leak outward.

特開平３−２８５１３７号公報JP-A-3-285137 特開２００５−９１２１５号公報JP, 2005-91215, A 特開２００４−５３３１７号公報JP 2004-53317 A 特開２００４−１０３５５号公報JP 2004-10355 A

本開示はこのような点を考慮してなされたものであり、配管内を流れる流体が漏水することを確実に防止することができ、かつ外部の流体が配管内に流入することがない、二重管継手構造を提供することを目的とする。 The present disclosure has been made in consideration of such points, and it is possible to reliably prevent the fluid flowing in the pipe from leaking water, and prevent external fluid from flowing into the pipe. An object is to provide a heavy pipe joint structure.

本開示は、第１外側管と、第２外側管と、前記第１外側管と前記第２外側管とを連結する外側スリーブとを有する外側配管と、第１内側管と、第２内側管と、前記第１内側管と前記第２内側管と連結する内側スリーブと、を有する内側配管とを備え、前記内側配管は前記外側配管内に配置され、前記第１外側管と前記第１内側管が連結され、前記第２外側管と前記第２内側管が連結される、二重管継手構造である。 The present disclosure includes an outer pipe having a first outer pipe, a second outer pipe, an outer sleeve that connects the first outer pipe and the second outer pipe, a first inner pipe, and a second inner pipe. And an inner sleeve having an inner sleeve connected to the first inner tube and the second inner tube, the inner tube being disposed in the outer tube, the first outer tube and the first inner tube. It is a double pipe joint structure in which pipes are connected and the second outer pipe and the second inner pipe are connected.

本開示は、前記第１外側管と前記第２外側管は、前記外側スリーブ外面に嵌合し、前記第１内側管と前記第２内側管は、前記内側スリーブ外面に嵌合する、二重管継手構造である。 In the present disclosure, the first outer tube and the second outer tube are fitted to the outer sleeve outer surface, and the first inner tube and the second inner tube are fitted to the inner sleeve outer surface. It is a pipe joint structure.

本開示は、前記第１外側管と前記第２外側管は、いずれも前記外側スリーブ側に外側拡径部を有し、前記第１内側管と前記第２内側管は、いずれも前記内側スリーブ側に内側拡径部を有する、二重管継手構造である。 In the present disclosure, both of the first outer tube and the second outer tube have an outer diameter expanded portion on the outer sleeve side, and the first inner tube and the second inner tube both have the inner sleeve. It is a double pipe joint structure having an inner expanded portion on the side.

本開示は、前記第１外側管および前記第２外側管のうち前記外側拡径部以外の部分と、前記外側スリーブとは同一外径を有し、前記第１内側管および前記第２内側管のうち前記内側拡径部の部分と、前記内側スリーブとは同一外径を有する、二重管継手構造である。 In the present disclosure, portions of the first outer pipe and the second outer pipe other than the outer expanded diameter portion and the outer sleeve have the same outer diameter, and the first inner pipe and the second inner pipe Of these, the portion of the inner diameter expanded portion and the inner sleeve have the same outer diameter, and have a double pipe joint structure.

本開示は、前記第１外側管と前記第２外側管は、前記外側スリーブ内面に嵌合し、前記第１内側管と前記第２内側管は、前記内側スリーブ内面に嵌合する、二重管継手構造である。 In the present disclosure, the first outer tube and the second outer tube are fitted to the inner surface of the outer sleeve, and the first inner tube and the second inner tube are fitted to the inner surface of the inner sleeve. It is a pipe joint structure.

本開示は、前記第１外側管と前記第１内側管は第１連結体を介して連結され、前記第２外側管と前記第２内側管は第２連結体を介して連結されている、二重管継手構造である。 In the present disclosure, the first outer tube and the first inner tube are connected via a first connecting body, and the second outer tube and the second inner tube are connected via a second connecting body. It is a double pipe joint structure.

以上のように本開示によれば、内側配管内を流れる流体が漏水することを確実に防止することができ、かつ外部の流体が内側配管内に流入することがない。 As described above, according to the present disclosure, it is possible to reliably prevent the fluid flowing in the inner pipe from leaking, and the external fluid does not flow into the inner pipe.

図１は、本開示による二重管継手構造の第１の実施の形態を示す側断面図。FIG. 1 is a side sectional view showing a first embodiment of a double pipe joint structure according to the present disclosure. 図２は、第１外側管と外側スリーブとの接続構造を示す図。FIG. 2 is a view showing a connection structure between the first outer pipe and the outer sleeve. 図３は、第１内側管と内側スリーブとの接続構造を示す図。FIG. 3 is a view showing a connection structure between the first inner pipe and the inner sleeve. 図４は、本開示による二重管継手構造の第２の実施の形態を示す側断面図。FIG. 4 is a side sectional view showing a second embodiment of the double pipe joint structure according to the present disclosure. 図５は、第１外側管と外側スリーブとの接続構造を示す図。FIG. 5: is a figure which shows the connection structure of a 1st outer side pipe and an outer side sleeve. 図６は、第１内側管と内側スリーブとの接続構造を示す図。FIG. 6 is a view showing a connection structure between the first inner pipe and the inner sleeve.

＜第１の実施の形態＞
以下、図１乃至図３を参照して、本開示による二重管継手構造の第１の実施の形態について説明する。 <First Embodiment>
Hereinafter, a first embodiment of a double pipe joint structure according to the present disclosure will be described with reference to FIGS. 1 to 3.

ここで図１は本開示による二重管継手構造を示す側断面図、図２は第１外側管と外側スリーブとの接続構造を示す図、図３は第１内側管と第１内側スリーブとの接続構造を示す図である。 1 is a side sectional view showing a double pipe joint structure according to the present disclosure, FIG. 2 is a view showing a connecting structure between a first outer pipe and an outer sleeve, and FIG. 3 is a first inner pipe and a first inner sleeve. It is a figure which shows the connection structure of.

また、図１は、第１外側管および第２外側管と、外側スリーブとの間の接続構造を簡略化して示しており、かつ第１内側管および第２内側管と、内側スリーブとの間の接続構造を簡略化して示している。 In addition, FIG. 1 shows a simplified connecting structure between the first outer pipe and the second outer pipe and the outer sleeve, and also shows the connection between the first inner pipe and the second inner pipe and the inner sleeve. The connection structure of is shown in a simplified manner.

図１乃至図３に示すように、二重管継手構造１は円筒状の第１外側管１１と、円筒状の第２外側管１２と、第１外側管１１と第２外側管１２を連結する円筒状の外側スリーブ１５とを有する外側配管１０と、円筒状の第１内側管２１と、円筒状の第２内側管２２と、第１内側管２１と第２内側管２２を連結する円筒状の内側スリーブ２５とを有する内側配管２０を備えている。 As shown in FIGS. 1 to 3, the double pipe joint structure 1 connects a cylindrical first outer pipe 11, a cylindrical second outer pipe 12, a first outer pipe 11 and a second outer pipe 12. An outer pipe 10 having a cylindrical outer sleeve 15, a cylindrical first inner pipe 21, a cylindrical second inner pipe 22, and a cylinder connecting the first inner pipe 21 and the second inner pipe 22. And an inner sleeve 25 having a shape of an inner sleeve 25.

このうち、内側配管２０は外側配管１０内に配置されている。また第１外側管１１と第２外側管１２は、外側スリーブ１５の外面に嵌合している。さらに第１内側管２１と第２内側管２２は、内側スリーブ２５の外面に嵌合している。 Of these, the inner pipe 20 is arranged in the outer pipe 10. The first outer tube 11 and the second outer tube 12 are fitted to the outer surface of the outer sleeve 15. Further, the first inner tube 21 and the second inner tube 22 are fitted to the outer surface of the inner sleeve 25.

また第１外側管１１と第１内側管２１は、例えば、第１外側管１１内に配置され、この第１外側管１１の軸線と直交する円盤状の第１連結板５のような第１連結体を介して互いに連結されている。 In addition, the first outer pipe 11 and the first inner pipe 21 are, for example, arranged in the first outer pipe 11, and the first outer plate 11 such as a disc-shaped first connecting plate 5 orthogonal to the axis of the first outer pipe 11. They are connected to each other via a connecting body.

さらに第２外側管１２と第２内側管２２は、例えば、第２外側管１２内に配置され、この第２外側管１２の軸線と直交する円盤状の第２連結板６のような第２連結体を介して互いに連結されている。 Further, the second outer pipe 12 and the second inner pipe 22 are arranged in the second outer pipe 12, for example, and the second second connecting plate 6 having a disc shape orthogonal to the axis of the second outer pipe 12 is used. They are connected to each other via a connecting body.

このように第１外側管１１と第１内側管２１が第１連結板５を介して連結されているため、第１内側管２１は第１外側管１１内の所定位置に保持される。 Since the first outer pipe 11 and the first inner pipe 21 are connected to each other via the first connecting plate 5, the first inner pipe 21 is held at a predetermined position in the first outer pipe 11.

また第２外側管１２と第２内側管２２が第２連結板６を介して連結されているため、第２内側管２２は第２外側管１２内の所定位置に保持される。 Further, since the second outer pipe 12 and the second inner pipe 22 are connected via the second connecting plate 6, the second inner pipe 22 is held at a predetermined position in the second outer pipe 12.

次に第１外側管１１と外側スリーブ１５との間の接続構造、および第２外側管１２と外側スリーブ１５との間の接続構造について説明する。ここで第１外側管１１と第２外側管１２は、いずれも外側スリーブ１５側で外径が拡張する拡径部（外側拡径部）１１Ａ，１２Ａを有する。このうち第１外側管１１の拡径部１１Ａは他の部分（拡径部１１Ａ以外の部分）１１Ｂに比べて外径が大きくなっており、第２外側管１２の拡径部１２Ａは他の部分（拡径部１２Ａ以外の部分）１２Ｂに比べて外径が大きくなっている。 Next, a connection structure between the first outer pipe 11 and the outer sleeve 15 and a connection structure between the second outer pipe 12 and the outer sleeve 15 will be described. Here, each of the first outer pipe 11 and the second outer pipe 12 has an enlarged diameter portion (outer diameter enlarged portion) 11A, 12A whose outer diameter expands on the outer sleeve 15 side. Of these, the expanded diameter portion 11A of the first outer pipe 11 has a larger outer diameter than the other portion (a portion other than the expanded diameter portion 11A) 11B, and the expanded diameter portion 12A of the second outer pipe 12 has another diameter. The outer diameter is larger than that of the portion (portion other than the enlarged diameter portion 12A) 12B.

なお、第１外側管１１と外側スリーブ１５との間の接続構造は、第２外側管１２と外側スリーブ１５との間の接続構造は略同一となっているため、ここでは第１外側管１１と外側スリーブ１５との間の接続構造について、図２により説明する。 Since the connection structure between the first outer pipe 11 and the outer sleeve 15 is substantially the same as the connection structure between the second outer pipe 12 and the outer sleeve 15, here, the first outer pipe 11 is connected. The connection structure between the outer sleeve 15 and the outer sleeve 15 will be described with reference to FIG.

図２に示すように、第１外側管１１の拡径部１１Ａは、その外側スリーブ側端部に半径方向外方へ突出する突出部１１ａを有する。そして外側スリーブ１５の外面に、第１外側管１１の突出部１１ａに当接するシールゴムリング１６が設けられている。 As shown in FIG. 2, the expanded diameter portion 11A of the first outer tube 11 has a protruding portion 11a protruding outward in the radial direction at the outer sleeve side end thereof. A seal rubber ring 16 is provided on the outer surface of the outer sleeve 15 so as to abut the protruding portion 11a of the first outer tube 11.

また外側スリーブ１５の外面に設けられたシールゴムリング１６を覆って、シールゴムリング用ハウジング１８が取り付けられている。このシールゴムリング用ハウジング１８は、シールゴムリング１６を外側スリーブ１５の外面の所定位置に保持して、シールゴムリング１６により第１外側管１１と外側スリーブ１５との間の密封性を高めるものである。このようなシールゴムリング用ハウジング１８は、円周方向に沿って複数に分割された分割部分１８ａを有し、各分割部分１８ａは締結ボルト１９により固定される。 A seal rubber ring housing 18 is attached to cover the seal rubber ring 16 provided on the outer surface of the outer sleeve 15. The seal rubber ring housing 18 holds the seal rubber ring 16 at a predetermined position on the outer surface of the outer sleeve 15, and enhances the sealing property between the first outer tube 11 and the outer sleeve 15 by the seal rubber ring 16. Such a seal rubber ring housing 18 has a plurality of divided portions 18a along the circumferential direction, and each divided portion 18a is fixed by a fastening bolt 19.

このように第１外側管１１と第２外側管１２はいずれも拡径部１１Ａ，１２Ａを有し、第１外側管１１の他の部分１１Ｂ、第２外側管１２の他の部分１２Ｂ、および外側スリーブ１５はいずれも同一外径をもつ。 As described above, both the first outer pipe 11 and the second outer pipe 12 have the enlarged diameter portions 11A and 12A, and the other portion 11B of the first outer pipe 11 and the other portion 12B of the second outer pipe 12, and The outer sleeves 15 all have the same outer diameter.

次に第１内側管２１と内側スリーブ２５との間の接続構造、および第２内側管２２と内側スリーブ２５との間の接続構造について説明する。ここで第１内側管２１と第２内側管２２は、いずれも内側スリーブ２５側で外径が拡張する拡径部（内側拡径部）２１Ａ，２２Ａを有する。このうち第１内側管２１の拡径部２１Ａは他の部分（拡径部２１Ａ以外の部分）２１Ｂに比べて外径が大きくなっており、第２内側管２２の拡径部２２Ａは他の部分（拡径部２２Ａ以外の部分）２２Ｂに比べて外径が大きくなっている。 Next, a connection structure between the first inner pipe 21 and the inner sleeve 25 and a connection structure between the second inner pipe 22 and the inner sleeve 25 will be described. Here, each of the first inner pipe 21 and the second inner pipe 22 has an enlarged diameter portion (inner enlarged diameter portion) 21A, 22A whose outer diameter expands on the inner sleeve 25 side. Of these, the enlarged diameter portion 21A of the first inner pipe 21 has a larger outer diameter than the other portion (a portion other than the enlarged diameter portion 21A) 21B, and the enlarged diameter portion 22A of the second inner pipe 22 has another diameter. The outer diameter is larger than that of the portion (portion other than the enlarged diameter portion 22A) 22B.

なお、第１内側管２１と内側スリーブ２５との間の接続構造は、第２内側管２２と内側スリーブ２５との間の接続構造は略同一となっているため、ここでは第１内側管２１と内側スリーブ２５との間の接続構造について、図３により説明する。 The connection structure between the first inner pipe 21 and the inner sleeve 25 is substantially the same as the connection structure between the second inner pipe 22 and the inner sleeve 25. The connection structure between the inner sleeve 25 and the inner sleeve 25 will be described with reference to FIG.

図３に示すように、第１内側管２１の拡径部２１Ａは、その内側スリーブ側端部に半径方向外方へ突出する突出部２１ａを有する。そして内側スリーブ２５の外面に、第１内側管２１の突出部２１ａに当接するシールゴムリング２８が設けられている。 As shown in FIG. 3, the expanded diameter portion 21A of the first inner pipe 21 has a protruding portion 21a protruding outward in the radial direction at the inner sleeve side end portion thereof. A seal rubber ring 28 is provided on the outer surface of the inner sleeve 25 so as to contact the protruding portion 21 a of the first inner tube 21.

また内側スリーブ２５の外面に設けられたシールゴムリング２８を覆って、シールゴムリング用ハウジング３１が取り付けられている。このシールゴムリング用ハウジング３１は、シールゴムリング２８を内側スリーブ２５の外面の所定位置に保持して、シールゴムリング２８により第１内側管２１と内側スリーブ２５との間の密封性を高めるものである。このようなシールゴムリング用ハウジング３１は、円周方向に沿って複数に分割された分割部分３１ａを有し、各分割部分３１ａは締結ボルト３２により固定される。 A seal rubber ring housing 31 is attached to cover the seal rubber ring 28 provided on the outer surface of the inner sleeve 25. The seal rubber ring housing 31 holds the seal rubber ring 28 at a predetermined position on the outer surface of the inner sleeve 25, and enhances the sealing performance between the first inner tube 21 and the inner sleeve 25 by the seal rubber ring 28. Such a seal rubber ring housing 31 has a plurality of divided portions 31a along the circumferential direction, and each divided portion 31a is fixed by a fastening bolt 32.

このように第１内側管２１と第２内側管２２はいずれも拡径部２１Ａ，２２Ａを有し、第１内側管２１の他の部分２１Ｂ、第２内側管２２の他の部分２２Ｂ、および内側スリーブ２５はいずれも同一外径をもつ。 As described above, both the first inner pipe 21 and the second inner pipe 22 have the enlarged diameter portions 21A and 22A, and the other portion 21B of the first inner pipe 21 and the other portion 22B of the second inner pipe 22, and The inner sleeves 25 all have the same outer diameter.

なお図１に示すように、第１内側管２１はフランジ２１ｃを介して連結された複数部分からなり、第２内側管２２もフランジ２２ｃを介して連結された複数部分からなる。 As shown in FIG. 1, the first inner pipe 21 is composed of a plurality of parts connected via a flange 21c, and the second inner pipe 22 is also composed of a plurality of parts connected via a flange 22c.

次にこのような構成からなる本実施の形態の作用について図１乃至図３により説明する。 Next, the operation of the present embodiment having such a configuration will be described with reference to FIGS.

まず上述した二重管継手構造１は、建築構造物中に設置される。このうち、内側配管２０内に流体が流されるが、外側配管１０内に流体が流されることはない。この外側配管１０は、内側配管２０内の流体が漏水した場合に、この漏水した流体が外部に流れることを防止する機能を有する。このような二重管継手構造１は、地震あるいは経年変化により、軸線方向あるいは軸線方向に直交する方向（偏心方向）もずれていく。 First, the double pipe joint structure 1 described above is installed in a building structure. Of these, the fluid flows in the inner pipe 20, but the fluid does not flow in the outer pipe 10. The outer pipe 10 has a function of preventing the leaked fluid from flowing to the outside when the fluid in the inner pipe 20 leaks. Such a double pipe joint structure 1 shifts in the axial direction or the direction orthogonal to the axial direction (eccentric direction) due to an earthquake or secular change.

まず図１に二重管継手構造１の基準形状を示す。この基準形状の状態から二重管継手構造１が軸線方向および軸線方向に直交する方向に沿ってずれていく。具体的には第１外側管１１と第２外側管１２とが互いに軸線方向に沿って離れていき、第１外側管１１に対して第２外側管１２が降下する。 First, FIG. 1 shows a reference shape of the double pipe joint structure 1. From this standard shape, the double pipe joint structure 1 shifts along the axial direction and the direction orthogonal to the axial direction. Specifically, the first outer pipe 11 and the second outer pipe 12 are separated from each other along the axial direction, and the second outer pipe 12 descends with respect to the first outer pipe 11.

また第１内側管２１と第２内側管２２が互いに軸線方向に沿って離れていき、第１内側管２１に対して第２内側管２２が降下する。 Further, the first inner pipe 21 and the second inner pipe 22 are separated from each other along the axial direction, and the second inner pipe 22 descends with respect to the first inner pipe 21.

このとき、外側配管１０側において、第１外側管１１および第２外側管１２が外側スリーブ１５の外面を摺動し、二重管継手構造１の軸線方向および軸線方向に直交する方向のずれを吸収する。 At this time, on the outer pipe 10 side, the first outer pipe 11 and the second outer pipe 12 slide on the outer surface of the outer sleeve 15 to cause a deviation in the axial direction of the double pipe joint structure 1 and a direction orthogonal to the axial direction. Absorb.

同様に内側配管２０側において、第１内側管２１および第２内側管２２が内側スリーブ２５の外面を摺動し、二重管継手構造１の軸線方向および軸線方向に直交する方向のずれを吸収する。 Similarly, on the inner pipe 20 side, the first inner pipe 21 and the second inner pipe 22 slide on the outer surface of the inner sleeve 25, and absorb the deviation of the double pipe joint structure 1 in the axial direction and the direction orthogonal to the axial direction. To do.

この間、図１および図２に示すように、第１内側管２１は第１外側管１１に連結されているため、第１内側管２１が第１外側管１１内で落下することはなく、第１外側管１１内の所定位置に保持される。 During this time, as shown in FIGS. 1 and 2, since the first inner pipe 21 is connected to the first outer pipe 11, the first inner pipe 21 does not fall inside the first outer pipe 11, 1 The outer pipe 11 is held at a predetermined position.

さらに第２内側管２２は第２外側管１２に連結されているため、第２内側管２２が第２外側管１２内で落下することはなく、第２外側管１２内の所定位置に保持される。 Further, since the second inner pipe 22 is connected to the second outer pipe 12, the second inner pipe 22 does not fall in the second outer pipe 12 and is held at a predetermined position in the second outer pipe 12. It

また内側配管２０の例えば第１内側管２１と内側スリーブ２５との間で漏水が生じても、流出した流体は第１連結板５と第２連結板６との間の空間１Ａ内に留まる。この場合、第１外側管１１および第２外側管１２と外側スリーブ１５との間はシールゴムリング１６により密封されているので、第１連結板５と第２連結板６との間の空間１Ａ内に流出した流体が、外側配管１０の外方へ流出することはない。 Further, even if water leaks between the first inner pipe 21 and the inner sleeve 25 of the inner pipe 20, the fluid that has flowed out remains in the space 1A between the first connecting plate 5 and the second connecting plate 6. In this case, the space between the first outer pipe 11 and the second outer pipe 12 and the outer sleeve 15 is sealed by the seal rubber ring 16, so that the space 1A between the first connecting plate 5 and the second connecting plate 6 is closed. The fluid flowing out to the outside does not flow out of the outer pipe 10.

また、外部の流体が外側配管１０を通って、内側配管２０内に浸入することもない。 Further, the external fluid does not enter the inside pipe 20 through the outside pipe 10.

以上のように本実施の形態によれば、内側配管２０、例えば第１内側管２１と内側スリーブ２５との間で漏水が生じても、内側配管２０から漏水した流体が外側配管１０から外方へ流出することはない。 As described above, according to the present embodiment, even if water leaks between the inner pipe 20, for example, the first inner pipe 21 and the inner sleeve 25, the fluid leaked from the inner pipe 20 moves outward from the outer pipe 10. Will not be leaked to.

さらにまた第１外側管１１はその拡径部１１Ａにおいて外側スリーブ１５の外面に嵌合し、第２外側管１２はその拡径部１２Ａにおいて外側スリーブ１５の外面に嵌合している。この場合、第１外側管１１の他の部分１１Ｂおよび第２外側管１２の他の部分１２Ｂの外径を、例えば外側スリーブ１５の外径に一致させることが可能となる。そしてこのように、第１外側管１１の他の部分１１Ｂの外径、第２外側管１２の他の部分１２Ｂの外径、および外側スリーブ１５の外径を一致させることにより、同一の配管部材を用いて、第１外側管１１の他の部分１１Ｂ、第２外側管１２の他の部分１２Ｂ、および外側スリーブ１５を作製することができ、製造コスト低減を図ることができる。また第１外側管１１の他の部分１１Ｂの外径、第２外側管１２の他の部分１２Ｂの外径、および外側スリーブ１５の外径を一致させることにより、二重管継手構造１を設置した際、外側スリーブ１５が第１外側管１１の他の部分１１Ｂおよび第２外側管１２の他の部分１２Ｂから外方へ大きく突出することはなく、二重管継手構造１をコンパクトに設置することができる。 Furthermore, the first outer tube 11 is fitted to the outer surface of the outer sleeve 15 at the expanded diameter portion 11A, and the second outer tube 12 is fitted to the outer surface of the outer sleeve 15 at the expanded diameter portion 12A. In this case, the outer diameter of the other portion 11B of the first outer pipe 11 and the other portion 12B of the second outer pipe 12 can be made to match the outer diameter of the outer sleeve 15, for example. In this way, by matching the outer diameter of the other portion 11B of the first outer pipe 11, the outer diameter of the other portion 12B of the second outer pipe 12, and the outer diameter of the outer sleeve 15, the same piping member can be obtained. Can be used to fabricate the other portion 11B of the first outer tube 11, the other portion 12B of the second outer tube 12, and the outer sleeve 15, thus reducing the manufacturing cost. In addition, the outer diameter of the other portion 11B of the first outer pipe 11, the outer diameter of the other portion 12B of the second outer pipe 12, and the outer diameter of the outer sleeve 15 are made to coincide with each other, whereby the double pipe joint structure 1 is installed. At this time, the outer sleeve 15 does not significantly project outward from the other portion 11B of the first outer pipe 11 and the other portion 12B of the second outer pipe 12, and the double pipe joint structure 1 is installed compactly. be able to.

また第１内側管２１はその拡径部２１Ａにおいて内側スリーブ２５の外面に嵌合し、第２内側管２２はその拡径部２２Ａにおいて内側スリーブ２５の外面に嵌合している。この第１内側管２１の他の部分２１Ｂおよび第２内側管２２の他の部分２２Ｂの外径を内側スリーブ２５の外径に一致させることにより、同一の配管部材を用いて、第１内側管２１の他の部分２１Ｂ、第２内側管２２の他の部分２２Ｂ、および内側スリーブ２５を作製することができ、このことにより製造コストの低減を図ることができる。 Further, the first inner tube 21 is fitted to the outer surface of the inner sleeve 25 at the expanded diameter portion 21A, and the second inner tube 22 is fitted to the outer surface of the inner sleeve 25 at the expanded diameter portion 22A. By matching the outer diameters of the other portion 21B of the first inner pipe 21 and the other portion 22B of the second inner pipe 22 with the outer diameter of the inner sleeve 25, the same inner pipe member can be used to form the first inner pipe. The other portion 21B of 21 and the other portion 22B of the second inner tube 22 and the inner sleeve 25 can be manufactured, which can reduce the manufacturing cost.

なお、上記の実施の形態において、第１連結体として第１連結板５を用い、第２連結体として第２連結板６を用いた例を示したが、これに限らず、第１連結体、第２連結体として、中心から周縁に向かって放射線状に延びる複数の棒状の第１連結体、及び中心から周縁に向かって放射線状に延びる複数の棒状の第２連結体を用いてもよい。 In addition, although the example which used the 1st connection plate 5 as a 1st connection body and used the 2nd connection plate 6 as a 2nd connection body was shown in the said embodiment, it is not restricted to this, A 1st connection body. As the second connecting body, a plurality of rod-shaped first connecting bodies that radially extend from the center to the peripheral edge and a plurality of rod-shaped second connecting bodies that radially extend from the center to the peripheral edge may be used. ..

＜第２の実施の形態＞
次に図４乃至図６を参照して、本開示による二重管継手構造の第２の実施の形態について説明する。 <Second Embodiment>
Next, a second embodiment of the double pipe joint structure according to the present disclosure will be described with reference to FIGS. 4 to 6.

ここで図４は本開示による二重管継手構造を示す側断面図、図５は第１外側管と外側スリーブとの接続構造を示す図、図６は第１内側管と内側スリーブとの接続構造を示す図である。 4 is a side sectional view showing a double pipe joint structure according to the present disclosure, FIG. 5 is a view showing a connecting structure between a first outer pipe and an outer sleeve, and FIG. 6 is a connection between a first inner pipe and an inner sleeve. It is a figure which shows a structure.

ここで図４は、第１外側管および第２外側管と、外側スリーブとの間の接続構造を簡略化して示しており、かつ第１内側管および第２内側管と、内側スリーブとの間の接続構造を簡略化して示している。 Here, FIG. 4 shows the connection structure between the first outer pipe and the second outer pipe and the outer sleeve in a simplified manner, and between the first inner pipe and the second inner pipe and the inner sleeve. The connection structure of is shown in a simplified manner.

図４乃至図６に示すように、二重管継手構造１は円筒状の第１外側管１１と、円筒状の第２外側管１２と、第１外側管１１と第２外側管１２を連結する円筒状の外側スリーブ１５とを有する外側配管１０と、円筒状の第１内側管２１と、円筒状の第２内側管２２と、第１内側管２１と第２内側管２２を連結する円筒状の内側スリーブ２５とを有する内側配管２０を備えている。 As shown in FIGS. 4 to 6, the double pipe joint structure 1 connects the cylindrical first outer pipe 11, the cylindrical second outer pipe 12, the first outer pipe 11 and the second outer pipe 12. An outer pipe 10 having a cylindrical outer sleeve 15, a cylindrical first inner pipe 21, a cylindrical second inner pipe 22, and a cylinder connecting the first inner pipe 21 and the second inner pipe 22. And an inner sleeve 25 having a shape of an inner sleeve 25.

このうち、内側配管２０は外側配管１０内に配置されている。また第１外側管１１と第２外側管１２は、外側スリーブ１５の内面に嵌合している。さらに第１内側管２１と第２内側管２２は、内側スリーブ２５の内面に嵌合している。 Of these, the inner pipe 20 is arranged in the outer pipe 10. The first outer tube 11 and the second outer tube 12 are fitted to the inner surface of the outer sleeve 15. Further, the first inner tube 21 and the second inner tube 22 are fitted to the inner surface of the inner sleeve 25.

また第１外側管１１と第１内側管２１は、例えば、第１外側管１１内に配置され、この第１外側管１１の軸線と直交する円盤状の第１連結板５のような第１連結体を介して互いに連結されている。 In addition, the first outer pipe 11 and the first inner pipe 21 are, for example, arranged in the first outer pipe 11, and the first outer plate 11 such as a disc-shaped first connecting plate 5 orthogonal to the axis of the first outer pipe 11. They are connected to each other via a connecting body.

さらに第２外側管１２と第２内側管２２は、例えば、第２外側管１２内に配置され、この第２外側管１２の軸線と直交する円盤状の第２連結板６のような第２連結体を介して互いに連結されている。 Further, the second outer pipe 12 and the second inner pipe 22 are arranged in the second outer pipe 12, for example, and the second second connecting plate 6 having a disc shape orthogonal to the axis of the second outer pipe 12 is used. They are connected to each other via a connecting body.

このように第１外側管１１と第１内側管２１が第１連結板５を介して連結されているため、第１内側管２１は第１外側管１１内の所定位置に保持される。 Since the first outer pipe 11 and the first inner pipe 21 are connected to each other via the first connecting plate 5, the first inner pipe 21 is held at a predetermined position in the first outer pipe 11.

また第２外側管１２と第２内側管２２が第２連結板６を介して連結されているため、第２内側管２２は第２外側管１２内の所定位置に保持される。 Further, since the second outer pipe 12 and the second inner pipe 22 are connected via the second connecting plate 6, the second inner pipe 22 is held at a predetermined position in the second outer pipe 12.

次に第１外側管１１と外側スリーブ１５との間の接続構造、および第２外側管１２と外側スリーブ１５との間の接続構造について説明する。 Next, a connection structure between the first outer pipe 11 and the outer sleeve 15 and a connection structure between the second outer pipe 12 and the outer sleeve 15 will be described.

なお、第１外側管１１と外側スリーブ１５との間の接続構造は、第２外側管１２と外側スリーブ１５との間の接続構造は略同一となっているため、ここでは第１外側管１１と外側スリーブ１５との間の接続構造について、図５により説明する。 Since the connection structure between the first outer pipe 11 and the outer sleeve 15 is substantially the same as the connection structure between the second outer pipe 12 and the outer sleeve 15, here, the first outer pipe 11 is connected. The connection structure between the outer sleeve 15 and the outer sleeve 15 will be described with reference to FIG.

図５に示すように、外側スリーブ１５はその第１外側管端部に半径方向外方へ突出する突出部１５ａを有する。そして第１外側管１１の外面に、第１外側管１１の突出部１１ａに当接するシールゴムリング１６が設けられている。 As shown in FIG. 5, the outer sleeve 15 has a protruding portion 15a protruding outward in the radial direction at the first outer tube end portion thereof. A seal rubber ring 16 is provided on the outer surface of the first outer tube 11 so as to abut the protruding portion 11a of the first outer tube 11.

また第１外側管１１の外面に設けられたシールゴムリング１６を覆って、シールゴムリング用ハウジング１８が取り付けられている。このシールゴムリング用ハウジング１８は、シールゴムリング１６を第１外側管１１の外面の所定位置に保持して、シールゴムリング１６により第１外側管１１と外側スリーブ１５との間の密封性を高めるものである。このようなシールゴムリング用ハウジング１８は、円周方向に沿って複数に分割された分割部分１８ａを有し、各分割部分１８ａは締結ボルト１９により固定される。 A seal rubber ring housing 18 is attached so as to cover the seal rubber ring 16 provided on the outer surface of the first outer tube 11. The seal rubber ring housing 18 holds the seal rubber ring 16 at a predetermined position on the outer surface of the first outer pipe 11, and the seal rubber ring 16 enhances the sealing property between the first outer pipe 11 and the outer sleeve 15. is there. Such a seal rubber ring housing 18 has a plurality of divided portions 18a along the circumferential direction, and each divided portion 18a is fixed by a fastening bolt 19.

次に第１内側管２１と内側スリーブ２５との間の接続構造、および内側スリーブ２５と第２内側管２２との間の接続構造について説明する。 Next, a connection structure between the first inner pipe 21 and the inner sleeve 25 and a connection structure between the inner sleeve 25 and the second inner pipe 22 will be described.

なお、第１内側管２１と内側スリーブ２５との間の接続構造、内側スリーブ２５と第２内側管２２との間の接続構造はいずれも同一構造をもつため、ここでは第１内側管２１と内側スリーブ２５との間の接続構造について図６により説明する。 Since the connection structure between the first inner pipe 21 and the inner sleeve 25 and the connection structure between the inner sleeve 25 and the second inner pipe 22 have the same structure, here The connection structure with the inner sleeve 25 will be described with reference to FIG.

図６に示すように、内側スリーブ２５は、その第１内側管２１側端部に半径方向外方へ突出する突出部２５ａを有する。そして第１内側管２１の外面に、内側スリーブ２５の突出部２５ａに当接するシールゴムリング２８が設けられている。 As shown in FIG. 6, the inner sleeve 25 has a projecting portion 25a that projects outward in the radial direction at the end of the inner sleeve 25 on the first inner tube 21 side. A seal rubber ring 28 is provided on the outer surface of the first inner tube 21 so as to abut the protruding portion 25 a of the inner sleeve 25.

また第１内側管２１の外面に設けられたシールゴムリング２８を覆って、シールゴムリング用ハウジング３１が取り付けられている。このシールゴムリング用ハウジング３１は、シールゴムリング２８を第１内側管２１の外面の所定位置に保持して、シールゴムリング２８により第１内側管２１と内側スリーブ２５との間の密封性を高めるものである。このようなシールゴムリング用ハウジング３１は、円周方向に沿って複数に分割された分割部分３１ａを有し、各分割部分３１ａは締結ボルト３２により固定される。 A seal rubber ring housing 31 is attached to cover the seal rubber ring 28 provided on the outer surface of the first inner tube 21. The seal rubber ring housing 31 holds the seal rubber ring 28 at a predetermined position on the outer surface of the first inner pipe 21, and the seal rubber ring 28 enhances the sealing property between the first inner pipe 21 and the inner sleeve 25. is there. Such a seal rubber ring housing 31 has a plurality of divided portions 31a along the circumferential direction, and each divided portion 31a is fixed by a fastening bolt 32.

また図４に示すように、第１内側管２１はフランジ２１ｃを介して連結された複数部分からなり、第２内側管２２もフランジ２２ｃを介して連結された複数部分からなる。 Further, as shown in FIG. 4, the first inner pipe 21 is made up of a plurality of parts connected via a flange 21c, and the second inner pipe 22 is also made up of a plurality of parts connected via a flange 22c.

次にこのような構成からなる本実施の形態の作用について図１乃至図４により説明する。 Next, the operation of the present embodiment having such a configuration will be described with reference to FIGS.

まず上述した二重管継手構造１は、建築構造物中に設置される。このうち、内側配管２０内に流体が流されるが、外側配管１０内に流体が流されることはない。この外側配管１０は、内側配管２０内の流体が漏水した場合に、この漏水した流体が外部に流れることを防止する機能を有する。このような二重管継手構造１は、地震あるいは経年変化により、軸線方向あるいは軸線方向に直交する方向（偏心方向）もずれていく。 First, the double pipe joint structure 1 described above is installed in a building structure. Of these, the fluid flows in the inner pipe 20, but the fluid does not flow in the outer pipe 10. The outer pipe 10 has a function of preventing the leaked fluid from flowing to the outside when the fluid in the inner pipe 20 leaks. Such a double pipe joint structure 1 shifts in the axial direction or the direction orthogonal to the axial direction (eccentric direction) due to an earthquake or secular change.

まず図４に二重管継手構造１の基準形状を示す。この基準形状の状態から二重管継手構造１が軸線方向および軸線方向に直交する方向に沿ってずれていく。具体的には第１外側管１１と第２外側管１２とが互いに軸線方向に沿って離れていき、第１外側管１１に対して第２外側管１２が降下する。 First, FIG. 4 shows a reference shape of the double pipe joint structure 1. From this standard shape, the double pipe joint structure 1 shifts along the axial direction and the direction orthogonal to the axial direction. Specifically, the first outer pipe 11 and the second outer pipe 12 are separated from each other along the axial direction, and the second outer pipe 12 descends with respect to the first outer pipe 11.

また第１内側管２１と第２内側管２２が互いに軸線方向に沿って離れていき、第１内側管２１に対して第２内側管２２が降下する。 Further, the first inner pipe 21 and the second inner pipe 22 are separated from each other along the axial direction, and the second inner pipe 22 descends with respect to the first inner pipe 21.

このとき、外側配管１０側において、第１外側管１１および第２外側管１２が外側スリーブ１５の外面を摺動し、二重管継手構造１の軸線方向および軸線方向に直交する方向のずれを吸収する。 At this time, on the outer pipe 10 side, the first outer pipe 11 and the second outer pipe 12 slide on the outer surface of the outer sleeve 15 to cause a deviation in the axial direction of the double pipe joint structure 1 and a direction orthogonal to the axial direction. Absorb.

同様に内側配管２０側において、内側スリーブ２５が第１内側管２１および第２内側管２２の外面を摺動し、二重管継手構造１の軸線方向および軸線方向に直交する方向のずれを吸収する。 Similarly, on the inner pipe 20 side, the inner sleeve 25 slides on the outer surfaces of the first inner pipe 21 and the second inner pipe 22, and absorbs the shift of the double pipe joint structure 1 in the axial direction and the direction orthogonal to the axial direction. To do.

この間、図４に示すように、第１内側管２１は第１外側管１１に連結されているため、第１内側管２１が第１外側管１１内で落下することはなく、第１外側管１１内の所定位置に保持される。 During this time, as shown in FIG. 4, since the first inner pipe 21 is connected to the first outer pipe 11, the first inner pipe 21 does not fall inside the first outer pipe 11 and the first outer pipe 11 does not fall. It is held in place within 11.

さらに第２内側管２２は第２外側管１２に連結されているため、第２内側管２２が第２外側管１２内で落下することはなく、第２外側管１２内の所定位置に保持される。 Further, since the second inner pipe 22 is connected to the second outer pipe 12, the second inner pipe 22 does not fall in the second outer pipe 12 and is held at a predetermined position in the second outer pipe 12. It

また内側配管２０の例えば第１内側管２１と内側スリーブ２５との間で漏水が生じても、流出した流体は第１連結板５と第２連結板６との間の空間１Ａ内に留まる。この場合、第１外側管１１および第２外側管１２と外側スリーブ１５との間はシールゴムリング１６により密封されているので、第１連結板５と第２連結板６との間の空間１Ａ内に流出した流体が、外側配管１０の外方へ流出することはない。 Further, even if water leaks between the first inner pipe 21 and the inner sleeve 25 of the inner pipe 20, the fluid that has flowed out remains in the space 1A between the first connecting plate 5 and the second connecting plate 6. In this case, the space between the first outer pipe 11 and the second outer pipe 12 and the outer sleeve 15 is sealed by the seal rubber ring 16, so that the space 1A between the first connecting plate 5 and the second connecting plate 6 is closed. The fluid flowing out to the outside does not flow out of the outer pipe 10.

また、外部の流体が外側配管１０を通って、内側配管２０内に浸入することもない。 Further, the external fluid does not enter the inside pipe 20 through the outside pipe 10.

以上のように本実施の形態によれば、内側配管２０、例えば第１内側管２１と内側スリーブ２５との間で漏水が生じても、内側配管２０から漏水した流体が外側配管１０から外方へ流出することはない。 As described above, according to the present embodiment, even if water leaks between the inner pipe 20, for example, the first inner pipe 21 and the inner sleeve 25, the fluid leaked from the inner pipe 20 moves outward from the outer pipe 10. Will not be leaked to.

１ 二重管継手構造
５ 第１連結板（第１連結体）
６ 第２連結板（第２連結体）
１０ 外側配管
１１ 第１外側管
１２ 第２外側管
１５ 外側スリーブ
１６ シールゴムリング
１８ シールゴムリング用ハウジング
２０ 内側配管
２１ 第１内側管
２２ 第２内側管
２５ 内側スリーブ
２８ シールゴムリング
３１ シールゴムリング用ハウジング 1 Double pipe joint structure 5 1st connecting plate (1st connecting body)
6 Second connecting plate (second connecting body)
Reference Signs List 10 outer pipe 11 first outer pipe 12 second outer pipe 15 outer sleeve 16 seal rubber ring 18 seal rubber ring housing 20 inner pipe 21 first inner pipe 22 second inner pipe 25 inner sleeve 28 seal rubber ring 31 seal rubber ring housing

Claims (6)

第１外側管と、第２外側管と、前記第１外側管と前記第２外側管とを連結する外側スリーブとを有する外側配管と、
第１内側管と、第２内側管と、前記第１内側管と前記第２内側管と連結する内側スリーブと、を有する内側配管とを備え、
前記内側配管は前記外側配管内に配置され、
前記第１外側管と前記第１内側管が連結され、前記第２外側管と前記第２内側管が連結される、二重管継手構造。 An outer pipe having a first outer pipe, a second outer pipe, and an outer sleeve connecting the first outer pipe and the second outer pipe;
An inner pipe having a first inner pipe, a second inner pipe, and an inner sleeve connecting the first inner pipe and the second inner pipe,
The inner pipe is disposed within the outer pipe,
A double pipe joint structure in which the first outer pipe and the first inner pipe are connected, and the second outer pipe and the second inner pipe are connected. 前記第１外側管と前記第２外側管は、前記外側スリーブ外面に嵌合し、前記第１内側管と前記第２内側管は、前記内側スリーブ外面に嵌合する、請求項１記載の二重管継手構造。 The first outer pipe and the second outer pipe are fitted to the outer surface of the outer sleeve, and the first inner pipe and the second inner pipe are fitted to the outer surface of the inner sleeve. Heavy pipe joint structure. 前記第１外側管と前記第２外側管は、いずれも前記外側スリーブ側に外側拡径部を有し、前記第１内側管と前記第２内側管は、いずれも前記内側スリーブ側に内側拡径部を有する、請求項２記載の二重管継手構造。 Each of the first outer pipe and the second outer pipe has an outer diameter expanded portion on the outer sleeve side, and both of the first inner pipe and the second inner pipe inner expand on the inner sleeve side. The double pipe joint structure according to claim 2, having a diameter portion. 前記第１外側管および前記第２外側管のうち前記外側拡径部以外の部分と、前記外側スリーブとは同一外径を有し、前記第１内側管および前記第２内側管のうち前記内側拡径部の部分と、前記内側スリーブとは同一外径を有する、請求項３記載の二重管継手構造。 A portion of the first outer pipe and the second outer pipe other than the outer expanded diameter portion and the outer sleeve have the same outer diameter, and the inner side of the first inner pipe and the second inner pipe The double pipe joint structure according to claim 3, wherein a portion of the enlarged diameter portion and the inner sleeve have the same outer diameter. 前記第１外側管と前記第２外側管は、前記外側スリーブ内面に嵌合し、前記第１内側管と前記第２内側管は、前記内側スリーブ内面に嵌合する、請求項１記載の二重管継手構造。 The first outer tube and the second outer tube fit on the inner surface of the outer sleeve, and the first inner tube and the second inner tube fit on the inner surface of the inner sleeve. Heavy pipe joint structure. 前記第１外側管と前記第１内側管は第１連結体を介して連結され、前記第２外側管と前記第２内側管は第２連結体を介して連結されている、請求項１乃至５のいずれか記載の二重管継手構造。 The first outer pipe and the first inner pipe are connected via a first connecting body, and the second outer pipe and the second inner pipe are connected via a second connecting body. 5. The double pipe joint structure according to any one of 5 above.
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JPS6114296U (en) * 1984-06-30 1986-01-27 株式会社クボタ double tube
JPS62107189U (en) * 1985-12-25 1987-07-08
US5106129A (en) * 1990-10-09 1992-04-21 Delaware Capital Formation, Inc. Flexible coupling for transferring a fluid between two fluid conduits
JPH05287787A (en) * 1992-04-13 1993-11-02 Mitsubishi Plastics Ind Ltd Connector for double-layer tube
JP2004108568A (en) * 2003-03-18 2004-04-08 Osamu Muramatsu Structure of carrier pipe
JP2007292237A (en) * 2006-04-26 2007-11-08 Asahi Organic Chem Ind Co Ltd Double tube connection structure
JP2008121746A (en) * 2006-11-09 2008-05-29 Jfe Steel Kk Bent pipe portion of heat insulating multiple pipe for superconducting power transmission

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Publication number Priority date Publication date Assignee Title
JPS4635064Y1 (en) * 1967-06-06 1971-12-03
JPS57203191U (en) * 1981-06-22 1982-12-24
JPS6114296U (en) * 1984-06-30 1986-01-27 株式会社クボタ double tube
JPS62107189U (en) * 1985-12-25 1987-07-08
US5106129A (en) * 1990-10-09 1992-04-21 Delaware Capital Formation, Inc. Flexible coupling for transferring a fluid between two fluid conduits
JPH05287787A (en) * 1992-04-13 1993-11-02 Mitsubishi Plastics Ind Ltd Connector for double-layer tube
JP2004108568A (en) * 2003-03-18 2004-04-08 Osamu Muramatsu Structure of carrier pipe
JP2007292237A (en) * 2006-04-26 2007-11-08 Asahi Organic Chem Ind Co Ltd Double tube connection structure
JP2008121746A (en) * 2006-11-09 2008-05-29 Jfe Steel Kk Bent pipe portion of heat insulating multiple pipe for superconducting power transmission

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