JP6921408B2 - Fluid equipment connection method, fluid equipment connection structure and tapered flange - Google Patents

Fluid equipment connection method, fluid equipment connection structure and tapered flange Download PDF

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JP6921408B2
JP6921408B2 JP2017157923A JP2017157923A JP6921408B2 JP 6921408 B2 JP6921408 B2 JP 6921408B2 JP 2017157923 A JP2017157923 A JP 2017157923A JP 2017157923 A JP2017157923 A JP 2017157923A JP 6921408 B2 JP6921408 B2 JP 6921408B2
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connecting flange
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flange
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淳也 立野
淳也 立野
山本　大介
大介 山本
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Waterworks Technology Development Organization Co Ltd
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Description

本発明は、両流体管の端部を密封状態で囲繞するハウジング内において、不断流状態で両流体管の端部と流体機器の両接続筒部とを摺動可能な継ぎ輪で密封状態に接続し、両継ぎ輪の連結フランジとそれに対面する流体機器の連結フランジとを締結手段で密封状態に固定連結する技術に関する。 In the present invention, in a housing that surrounds the ends of both fluid pipes in a sealed state, the ends of both fluid pipes and both connecting cylinders of the fluid device are sealed by a slidable joint ring in a non-disruptive state. The present invention relates to a technique for connecting and fixing and connecting the connecting flange of both joint wheels and the connecting flange of a fluid device facing the connection flange in a sealed state by fastening means.

水道管等の流体管をもって構成される流体配管経路の途中に、不断流状態で三方弁や仕切弁等の流体機器を布設するとき、施工条件によっては、流体配管経路の布設対象部位に管継手が存在することがある。流体機器の布設工事においては、流体配管経路の管継手を含む布設作業領域を掘削し、管継手で接続されている両流体管の状況を確認する作業が実施される。このとき、地震や地盤沈下等による地盤変位に追従して、管継手に接続されている両流体管が、それらの管軸芯が交差する状態に屈曲作動していることがある。 When laying fluid equipment such as three-way valves and sluice valves in the middle of a fluid piping path consisting of fluid pipes such as water pipes, depending on the construction conditions, pipe fittings may be applied to the part to be laid in the fluid piping path. May exist. In the laying work of fluid equipment, the work of excavating the laying work area including the pipe joint of the fluid pipe path and checking the condition of both fluid pipes connected by the pipe joint is carried out. At this time, following the ground displacement due to an earthquake, ground subsidence, etc., both fluid pipes connected to the pipe joint may be bent so that their pipe axes intersect.

両流体管の管軸芯が屈曲している場合でも、両流体管の端部側に装着されている継ぎ輪を流体機器側に摺動操作して、当該継ぎ輪を、両流体管の端部と流体機器の両接続筒部とに亘る密封接続位置に配置することができる。しかし、管継手による密封は漏洩を防止するだけの仮密封（仮止水）であり、最終的には、両継ぎ輪の連結フランジとそれに管軸芯方向で対面する流体機器の連結フランジとの間にパッキンを介装し、この状態で両継ぎ輪の連結フランジと流体機器の連結フランジとを締結手段で強固に固定連結して所定の密封性能（水密性能）を確保する必要がある。しかし、両継ぎ輪の連結フランジと流体機器の連結フランジとは、両流体管の管軸芯の交差によって管周方向の一端部のみが当接する片当たり状態にあるため、所定の密封性能を確保することはできなかった。 Even when the tube axes of both fluid pipes are bent, the joint ring attached to the end side of both fluid pipes is slid to the fluid device side, and the joint ring is moved to the end of both fluid pipes. It can be arranged in a sealed connection position extending over both the connection tube portion of the portion and the fluid device. However, sealing with a pipe joint is a temporary seal (temporary water stoppage) that only prevents leakage, and finally, the connecting flange of both joint wheels and the connecting flange of the fluid equipment facing it in the direction of the pipe axis It is necessary to insert a packing between them, and in this state, firmly fix and connect the connecting flange of the double joint ring and the connecting flange of the fluid device by the fastening means to secure a predetermined sealing performance (watertightness performance). However, since the connecting flanges of the two joint wheels and the connecting flanges of the fluid equipment are in a one-sided contact state in which only one end in the circumferential direction of the pipes abuts due to the intersection of the pipe axes of both fluid pipes, a predetermined sealing performance is ensured. I couldn't.

そこで、本願出願人は、特許文献１に示す流体配管系の管継手更新工法を開発した。この管継手更新工法では、両流体管の各々に、当該流体管の外周面との間に流体管の交差角度を吸収可能な空間を現出する基礎筒体を、当該両基礎筒体同士が水平方向に沿って同芯又は略同芯となる状態で予め外装固定する。両基礎筒体の各々には、筒軸心方向に摺動自在な継ぎ輪を装着する。
両基礎筒体及び継ぎ輪を密封状態で囲繞するハウジング内に、基礎筒体と同一の外径に構成された一対の接続筒部を備えた流体機器を搬入する。この搬入された流体機器の両接続筒部を、両基礎筒体の端部間に同芯状態で配置する。この状態で両基礎筒体に保持されている継ぎ輪を流体機器側に摺動操作し、両継輪を、両基礎筒体と流体機器の両接続筒部とに跨る密封接続位置に配置する。
その後、密封接続位置にある両継ぎ輪の連結フランジとそれに管軸芯方向で対面する流体機器の連結フランジとを締結手段で固定連結する。 Therefore, the applicant of the present application has developed a pipe joint renewal method for a fluid piping system shown in Patent Document 1. In this pipe joint renewal method, each of the two fluid pipes has a foundation cylinder that exposes a space that can absorb the intersection angle of the fluid pipe with the outer peripheral surface of the fluid pipe. The exterior is fixed in advance in a state of being concentric or substantially concentric along the horizontal direction. A joint ring that is slidable in the axial direction of the cylinder is attached to each of both foundation cylinders.
A fluid device having a pair of connecting cylinders having the same outer diameter as the foundation cylinder is carried into a housing that surrounds both foundation cylinders and joint rings in a sealed state. Both connecting cylinders of the carried-in fluid device are arranged concentrically between the ends of both foundation cylinders. In this state, the joint wheels held by both foundation cylinders are slid toward the fluid equipment side, and both joint wheels are arranged at a sealed connection position straddling both the foundation cylinders and both connection cylinders of the fluid equipment. ..
After that, the connecting flange of the double joint ring at the sealed connection position and the connecting flange of the fluid device facing it in the direction of the pipe axis are fixedly connected by the fastening means.

特開２０１１−２３６９４８号公報Japanese Unexamined Patent Publication No. 2011-236948

上述の特許文献１に示す流体配管系の管継手更新工法では、両流体管の管軸芯が屈曲していても、密封接続位置にある両継ぎ輪の連結フランジと流体機器の連結フランジとを密封状態で確実に固定連結することができる。反面、両基礎筒体は、流体管の外周面との間に流体管の交差角度を吸収可能な空間を現出する必要があるため、その空間確保の分だけ流体管よりも大型化する。しかも、流体機器の両接続筒部及び両継ぎ輪の各々を、基礎筒体を基準にした大きさに構成する必要がある。そのため、流体機器の接続構造が大型化し、且つ、コストの高騰化を招来する可能性がある。 In the pipe joint renewal method of the fluid piping system shown in Patent Document 1 described above, even if the pipe axes of both fluid pipes are bent, the connecting flange of both joint rings and the connecting flange of the fluid device at the sealed connection position are connected. It can be securely fixed and connected in a sealed state. On the other hand, since it is necessary to create a space between the two foundation cylinders and the outer peripheral surface of the fluid pipe that can absorb the intersection angle of the fluid pipe, the size of both foundation cylinders is larger than that of the fluid pipe by the amount of securing the space. Moreover, it is necessary to configure each of the connecting cylinders and the joint wheels of the fluid device in a size based on the base cylinder. Therefore, there is a possibility that the connection structure of the fluid device becomes large and the cost rises.

この実情に鑑み、本発明の主たる課題は、流体機器の接続構造のコンパクト化及びコストの低廉化に有用な流体機器の接続工法と流体機器の接続構造及びテーパフランジを提供する点にある。 In view of this situation, a main object of the present invention is to provide a fluid device connection method, a fluid device connection structure, and a tapered flange, which are useful for making the fluid device connection structure compact and reducing the cost.

本発明による第１の特徴構成は、管軸芯が交差する両流体管の端部を密封状態で囲繞するハウジング内において、不断流状態で前記両流体管の端部間に流体機器を配置する流体機器配置工程と、
前記ハウジング内において、前記両流体管の端部と前記流体機器の両接続筒部とを摺動可能な継ぎ輪で密封状態に接続する継ぎ輪接続工程と、
前記両継ぎ輪の連結フランジとそれに管軸芯方向で対面する前記流体機器の連結フランジとを締結手段で密封状態に固定連結する固定連結工程と、
を備えた流体機器の接続工法であって、
前記流体機器の前記連結フランジと前記継ぎ輪の前記連結フランジとを面当たり状態に修正する当接状態修正工程が備えられ、前記当接状態修正工程では、管軸芯が水平軸芯と交差する前記流体管に外装された前記継ぎ輪の前記連結フランジと前記流体機器の前記連結フランジとの間に、前記継ぎ輪の前記連結フランジに対する第１当接面及び前記流体機器の前記連結フランジに対する第２当接面を備え、且つ、前記第１当接面と前記第２当接面とで形成される第２交差角度が前記流体管の管軸芯と前記水平軸芯との交差角度に構成されている角度調整体を配置し、前記流体機器の前記連結フランジと前記継ぎ輪の前記連結フランジとを、前記角度調整体を介して面当たり状態に修正する点にある。 The first characteristic configuration according to the present invention is to arrange a fluid device between the ends of both fluid pipes in a continuous flow state in a housing surrounding the ends of both fluid pipes where the pipe axes intersect in a sealed state. Fluid equipment placement process and
In the housing, a joint ring connecting step of connecting the ends of both fluid pipes and both connecting cylinders of the fluid device in a sealed state with slidable joint rings.
A fixed connecting step of fixing and connecting the connecting flange of the double joint ring and the connecting flange of the fluid device facing the connecting flange in the direction of the pipe axis in a sealed state by a fastening means.
It is a connection method of fluid equipment equipped with
Abutment correcting step is provided to fix said connecting flange of the collar and the connecting flange of the fluid device in the state per surface, said at contact state altering step, the pipe axis intersects the horizontal axis Between the connecting flange of the joint ring mounted on the fluid pipe and the connecting flange of the fluid device, the first contact surface of the joint ring with respect to the connecting flange and the first contact surface of the fluid device with respect to the connecting flange. It is provided with two contact surfaces, and the second intersection angle formed by the first contact surface and the second contact surface is configured to be the intersection angle between the tube axis of the fluid pipe and the horizontal axis. The point is that the angle adjusting body is arranged, and the connecting flange of the fluid device and the connecting flange of the joint ring are corrected to a surface contact state via the angle adjusting body .

上記構成によれば、両流体管の管軸芯が交差する状態にあっても、当接状態修正工程において、流体機器の連結フランジと継ぎ輪の連結フランジとを面当たり状態に修正することができる。それ故に、継ぎ輪接続工程において、両流体管の端部と流体機器の両接続筒部とを密封状態に接続する位置に継ぎ輪を摺動操作したとき、両継ぎ輪の連結フランジとそれに管軸芯方向で対面する流体機器の連結フランジとが面当たり状態に当接する。この状態で実行される固定連結工程での締結手段により、両継ぎ輪の連結フランジと流体機器の連結フランジとを水密状態で確実に固定連結することができる。
したがって、流体機器の連結フランジと継ぎ輪の連結フランジとを面当たり状態に修正するだけなので、従来の管継手更新工法に比較して流体機器の接続構造のコンパクト化及びコストの低廉化を図ることができる。 According to the above configuration, even if the tube axes of both fluid pipes intersect, the connecting flange of the fluid device and the connecting flange of the joint ring can be corrected to the surface contact state in the contact state correction step. can. Therefore, in the joint ring connection process, when the joint ring is slid to a position where the end of both fluid pipes and both connection cylinders of the fluid device are connected in a sealed state, the connecting flange of both joint wheels and the pipe to it are connected. The connecting flanges of the fluid devices facing each other in the axial direction come into contact with each other. By the fastening means in the fixed connecting step executed in this state, the connecting flange of both joint wheels and the connecting flange of the fluid device can be reliably fixedly connected in a watertight state.
Therefore, since the connecting flange of the fluid equipment and the connecting flange of the joint ring are only corrected to the surface contact state, the connection structure of the fluid equipment should be made more compact and the cost should be reduced as compared with the conventional pipe joint renewal method. Can be done.

前記当接状態修正工程には、前記両流体管の交差角度に対応する傾斜角を付加して、前記流体機器の連結フランジと前記継ぎ輪の連結フランジとを面当たり状態に修正する角度調整手段が備えられている。 The front Symbol abutment correction process, said by adding inclination angle corresponding to the angle of intersection of the two fluid tubes, connecting flange the connecting flanges and the angle adjustment to correct the state per surface of said collar of said fluid device means that have been provided.

上記構成によれば、両流体管の管軸芯が交差する状態にあっても、当接状態修正工程において、角度調整手段で両流体管の交差角度に対応する傾斜角を付加することにより、流体機器の連結フランジと継ぎ輪の連結フランジとを面当たり状態に能率良く容易に修正することができる。 According to the above configuration, even if the tube axes of both fluid tubes intersect, in the contact state correction step, an inclination angle corresponding to the intersection angle of both fluid tubes is added by the angle adjusting means. The connecting flange of the fluid equipment and the connecting flange of the joint ring can be efficiently and easily corrected to the surface contact state.

前記角度調整手段には、前記流体機器の連結フランジと前記継ぎ輪の連結フランジとの間において共締め固定可能な環状の角度調整体が備えられている。 The front Symbol angle adjusting means, fastened fixable annular angular adjustment member between the connecting flange of the coupling flange and the collar of the fluid device is that feature.

上記構成によれば、角度調整手段を構成する環状の角度調整体を、流体機器の連結フランジと継ぎ輪の連結フランジとの間に配置し、固定連結工程において、締結手段で両継ぎ輪の連結フランジと流体機器の連結フランジとを密封状態に固定連結するだけで、角度調整体を同時に共締め固定することがでる。
したがって、流体機器の接続構造の簡素化を図りながら、流体機器の連結フランジと継ぎ輪の連結フランジとを面当たり状態に能率良く容易に修正することができる。
本発明による第２の特徴構成は、前記角度調整体は、前記流体機器の前記連結フランジとの間及び前記継ぎ輪の前記連結フランジとの間にそれぞれパッキンを介装した状態で前記連結フランジと前記連結フランジとに共締め固定されている点にある。
本発明による第３の特徴構成は、前記角度調整体は、前記流体機器の前記連結フランジ又は前記継ぎ輪の前記連結フランジと一体形成されている点にある。 According to the above configuration, the annular angle adjusting body constituting the angle adjusting means is arranged between the connecting flange of the fluid device and the connecting flange of the joint ring, and in the fixed connecting step, the connecting ring is connected by the fastening means. By simply fixing and connecting the flange and the connecting flange of the fluid device in a sealed state, the angle adjuster can be fastened and fixed at the same time.
Therefore, it is possible to efficiently and easily modify the connecting flange of the fluid device and the connecting flange of the joint ring to the surface contact state while simplifying the connection structure of the fluid device.
The second characteristic configuration according to the present invention is that the angle adjusting body is connected to the connecting flange in a state where packing is interposed between the connecting flange of the fluid device and the connecting flange of the joint ring. The point is that it is fastened and fixed together with the connecting flange.
A third characteristic configuration according to the present invention is that the angle adjusting body is integrally formed with the connecting flange of the fluid device or the connecting flange of the joint ring.

本発明による第４の特徴構成は、前記角度調整体は、前記ハウジング内に搬入される前の前記流体機器の前記連結フランジに、パッキンを介して予め固定連結されている点にある。 The fourth characteristic configuration of the present invention, the angular adjustment member is in the connecting flange of the fluid device prior to being loaded into the said housing, in that it is rigidly connected in advance through the packing.

上記構成によれば、例えば、両流体管の端部に装着される継ぎ輪側に角度調整体を取付ける場合のように、角度調整体を管周方向で複数に分割する分割構造に構成する必要がなく、角度調整体を環状に一体化された簡素な構造に構成することができる。しかも、角度調整体を、例えば、流体機器の連結フランジとの間の密封性（水密性）が流体圧試験で確認された状態で、流体機器の連結フランジに固定連結することが可能となる。これにより、流体機器と流体管との接続作業を信頼性の高い状態で能率良く行うことができる。 According to the above configuration, it is necessary to configure the angle adjusting body into a plurality of divided structures in the pipe circumferential direction, for example, when the angle adjusting body is attached to the joint ring side attached to the ends of both fluid pipes. The angle adjuster can be configured into a simple structure integrated in an annular shape. Moreover, the angle adjuster can be fixedly connected to the connecting flange of the fluid device, for example, with the sealability (watertightness) between the angle adjusting body and the connecting flange of the fluid device confirmed by the fluid pressure test. As a result, the connection work between the fluid device and the fluid pipe can be efficiently performed in a highly reliable state.

本発明による第５の特徴構成は、前記角度調整体には、前記流体管の管軸芯と水平軸芯との交差角度でテーパ状に形成された一つ又は複数のテーパフランジが備えられている点にある。 The fifth characteristic configuration according to the present invention is that the angle adjusting body is provided with one or a plurality of tapered flanges formed in a tapered shape at an angle of intersection between the tube axis and the horizontal axis of the fluid tube. There is a point.

上記構成によれば、流体管の管軸芯と水平軸芯との交差角度でテーパ状に形成された一つ又は複数枚のテーパフランジを準備するだけでよく、流体機器の接続構造の簡素化を図りながら、流体機器の連結フランジと継ぎ輪の連結フランジとを面当たり状態に能率良く容易に修正することができる。 According to the above configuration, it is only necessary to prepare one or a plurality of tapered flanges formed in a tapered shape at the intersection angle between the tube axis and the horizontal axis of the fluid tube, and the connection structure of the fluid device is simplified. It is possible to efficiently and easily correct the connecting flange of the fluid equipment and the connecting flange of the joint ring to the surface contact state while trying to achieve the above.

本発明による第６の特徴構成は、管軸芯が交差する両流体管の端部間に流体機器が配設され、前記両流体管の端部と前記流体機器の両接続筒部とが摺動可能な継ぎ輪で密封状態に接続され、前記各継ぎ輪の連結フランジとこれに管軸芯方向で対面する前記流体機器の連結フランジとが締結手段で密封状態に固定連結されている流体機器の接続構造であって、
管軸芯が水平軸芯と交差する前記流体管に外装された前記継ぎ輪の前記連結フランジと前記流体機器の前記連結フランジとの間に、前記継ぎ輪の前記連結フランジに対する第１当接面及び前記流体機器の前記連結フランジに対する第２当接面を備え、且つ、前記第１当接面と前記第２当接面とで形成される第２交差角度が前記流体管の管軸芯と前記水平軸芯との交差角度に構成されている角度調整体を配置し、前記流体機器の前記連結フランジと前記継ぎ輪の前記連結フランジとを、前記角度調整体を介して面当たり状態に構成する点にある。 In the sixth characteristic configuration according to the present invention, a fluid device is arranged between the ends of both fluid tubes where the tube axis intersects, and the ends of both fluid tubes and both connecting cylinders of the fluid device slide. A fluid device that is connected in a sealed state by a movable joint ring, and the connecting flange of each joint ring and the connecting flange of the fluid device facing the connecting flange in the direction of the pipe axis are fixedly connected in a sealed state by a fastening means. It is a connection structure of
A first contact surface of the joint ring with respect to the connecting flange between the connecting flange of the joint ring mounted on the fluid pipe where the pipe axis intersects the horizontal axis and the connecting flange of the fluid device. A second contact surface with respect to the connecting flange of the fluid device is provided, and a second crossing angle formed by the first contact surface and the second contact surface is the tube axis of the fluid tube. An angle adjusting body configured at an intersection angle with the horizontal axis is arranged, and the connecting flange of the fluid device and the connecting flange of the joint ring are configured to be in a surface contact state via the angle adjusting body. There is a point to do.

上記構成によれば、両流体管の管軸芯が交差する状態にあっても、流体機器の連結フランジと継ぎ輪の連結フランジとの間に設けた角度調整手段によって、両流体管の交差角度に対応する傾斜角を付加することにより、流体機器の連結フランジと継ぎ輪の連結フランジとを面当たり状態に能率良く容易に修正することができる。 According to the above configuration, even when the tube axes of both fluid pipes intersect, the angle of intersection of both fluid pipes is provided by the angle adjusting means provided between the connecting flange of the fluid device and the connecting flange of the joint ring. By adding the inclination angle corresponding to the above, the connecting flange of the fluid device and the connecting flange of the joint ring can be efficiently and easily corrected to the surface contact state.

流体機器の接続工法に用いられる前記テーパフランジであって、前記締結手段のボルトが挿通される複数のボルト挿通孔と、前記流体機器の連結フランジに対する複数の取付け部とが形成されている。 A the tapered flange used for connection method of the flow body device, a plurality of bolt insertion holes bolts of the fastening means is inserted, that have a plurality of mounting portions are formed for coupling flange of the fluid device.

上記構成によれば、各流体管の管軸芯と水平軸芯との交差角度でテーパ状に形成されたテーパフランジを準備するだけでよく、流体機器の接続構造の簡素化を図りながら、流体機器の連結フランジと継ぎ輪の連結フランジとを面当たり状態に能率良く容易に修正することができる。しかも、テーパフランジに形成されている取付け部を用いて流体機器の連結フランジに容易に固定連結することができる。さらに、テーパフランジに形成されているボルト挿通孔を用いて、継ぎ輪の連結フランジと流体機器の連結フランジとを密封状態に固定連結すると同時に、テーパフランジを共締め固定することができる。 According to the above configuration, it is only necessary to prepare a tapered flange formed in a tapered shape at the intersection angle between the tube axis and the horizontal axis of each fluid pipe, and the fluid can be simplified while simplifying the connection structure of the fluid device. The connecting flange of the equipment and the connecting flange of the joint ring can be efficiently and easily corrected to the surface contact state. Moreover, it can be easily fixedly connected to the connecting flange of the fluid device by using the mounting portion formed on the tapered flange. Further, by using the bolt insertion holes formed in the tapered flange, the connecting flange of the joint ring and the connecting flange of the fluid device can be fixedly connected in a sealed state, and at the same time, the tapered flange can be fastened and fixed together.

既設流体管に継ぎ輪を装着したときの側面図Side view when a joint ring is attached to an existing fluid pipe 既設流体管に切断機を装着したときの断面図Cross-sectional view when the cutting machine is attached to the existing fluid pipe 切断機による切断作業時の断面図Cross-sectional view during cutting work with a cutting machine 切断機の撤去時の断面図Cross-sectional view when removing the cutting machine テーパフランジを取付けたバルブの側面図Side view of a valve with a tapered flange テーパフランジの正面図（ａ）と断面図（ｂ）Front view (a) and cross-sectional view (b) of the tapered flange ハウジングの上側ケース内にバルブを格納したときの断面図Cross-sectional view when the valve is stored in the upper case of the housing バルブを接続位置に配置したときの断面図Cross-sectional view when the valve is placed at the connection position 継ぎ輪の接続開始時の拡大断面図Enlarged cross-sectional view at the start of connection of the joint ring 継ぎ輪の接続後の拡大断面図Enlarged sectional view after connecting the joint wheels バルブ接続完了時の側面図Side view when valve connection is completed 第２実施形態を示す要部の一部切欠き側面図Partial notch side view of the main part showing the second embodiment 第３実施形態を示すバルブ接続完了時の側面図Side view of the third embodiment when the valve connection is completed 第４実施形態を示すバルブ接続時の断面図Sectional drawing at the time of valve connection which shows 4th Embodiment 第４実施形態を示すバルブ接続完了時の側面図Side view at the time of valve connection completion which shows 4th Embodiment

〔第１実施形態〕
図１〜図１１は、地中に埋設されている既設の水道管等の流体管１等で構成される流体配管経路の途中に、流体機器の一例であるバルブ２を不断流状態（不断水状態）で布設する流体機器接続工法及びその工法で構成される流体機器接続構造を示す。
本実施形態では、バルブ２として図５、図１１に示す三方弁が用いられている。このバルブ２の筐体２０には、図５、図１１に示すように、両流体管１の端部に接続される一対の第１接続筒部２１と、両第１接続筒部２１の筒軸芯に対して直交する水平方向から他の流体管（図示省略）に接続される第２接続筒部２２とが形成されている。筐体２０の両第１接続筒部２１には、後述の継ぎ輪５の一端側の第２連結フランジ５５に締結手段３のボルト３１・ナット３２で密封状態（水密状態）に固定連結される第１連結フランジ２３が一体形成されている。
また、図１１に示すように、筐体２０の蓋体２４の筒状ケース部２５には、筐体２０内の弁体（図示省略）を操作する減速機２６が設けられ、筐体２０の蓋体２４と第２接続筒部２２とに亘って、弁体の上流側と下流側とを同圧又は略同圧に調整するバイパス弁２７を備えたバイパス管２８が接続されている。 [First Embodiment]
1 to 11 show a valve 2 which is an example of a fluid device in an uninterrupted flow state (uninterrupted water) in the middle of a fluid piping path composed of a fluid pipe 1 or the like such as an existing water pipe buried in the ground. The fluid equipment connection method to be laid in (state) and the fluid equipment connection structure composed of the method are shown.
In this embodiment, the three-way valve shown in FIGS. 5 and 11 is used as the valve 2. As shown in FIGS. 5 and 11, the housing 20 of the valve 2 includes a pair of first connection cylinders 21 connected to the ends of both fluid pipes 1 and cylinders of both first connection cylinders 21. A second connection cylinder portion 22 connected to another fluid pipe (not shown) is formed from a horizontal direction orthogonal to the axis. Both first connecting cylinders 21 of the housing 20 are fixedly connected to the second connecting flange 55 on one end side of the joint ring 5, which will be described later, in a sealed state (watertight state) with the bolts 31 and nuts 32 of the fastening means 3. The first connecting flange 23 is integrally formed.
Further, as shown in FIG. 11, the tubular case portion 25 of the lid body 24 of the housing 20 is provided with a speed reducer 26 for operating a valve body (not shown) in the housing 20, and the housing 20 is provided with a speed reducer 26. A bypass pipe 28 provided with a bypass valve 27 for adjusting the upstream side and the downstream side of the valve body to the same pressure or substantially the same pressure is connected to the lid body 24 and the second connecting cylinder portion 22.

次に、流体機器接続工法について詳述する。
［１］作業ピット構築工程
図１に示すように、地中に埋設されている流体管１の布設作業領域よりも少し大きな範囲を掘削して、流体管１の布設作業領域が露出する作業ピットＰを形成する。作業ピットＰの底面には、砕石１５を敷き詰め、その上にコンクリートを打設して鉄筋入りのベースコンクリート１６が構築されている。ベースコンクリート１６の管軸芯方向の二箇所には、切断後に残置側となる両流体管１の切断残置予定管部（切断後は切断残置管部）１Ｂを固定する鉄筋入りの支柱コンクリート１７が構築されている。
作業ピットＰ内に位置する両流体管１は管継手１８で接続されている。両流体管１は、地震や地盤沈下等による地盤変位に追従してＶ字状に屈曲作動し、両流体管１の管軸芯Ｘ１が交差する状態にある。各流体管１の管軸芯Ｘ１は、図１、図１１に示すように、水平軸芯Ｘ２に対して同一の交差角度θが生じている。
尚、本実施形態では、両流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θが同一となる事例について説明するが、両流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θが異なる事例、あるいは、一方の流体管１の管軸芯Ｘ１が水平軸芯Ｘ２に沿う状態にあり、他方の流体管１の管軸芯Ｘ１のみが水平軸芯Ｘ２に対して傾動している事例も考えられる。本発明の技術は、いずれの事例に対しても適用が可能である。 Next, the fluid equipment connection method will be described in detail.
[1] Work pit construction process As shown in FIG. 1, a work pit where a slightly larger area than the laying work area of the fluid pipe 1 buried in the ground is excavated to expose the laying work area of the fluid pipe 1. Form P. Crushed stone 15 is spread on the bottom surface of the work pit P, and concrete is cast on the crushed stone 15 to construct a base concrete 16 with reinforcing bars. Reinforcing bar concrete 17 for fixing the pipes scheduled to be left after cutting (the pipes left after cutting) 1B of both fluid pipes 1 that will be left after cutting at two locations in the direction of the pipe axis of the base concrete 16. Has been built.
Both fluid pipes 1 located in the work pit P are connected by a pipe joint 18. Both fluid pipes 1 bend in a V shape following the ground displacement due to an earthquake, ground subsidence, etc., and the pipe axis X1 of both fluid pipes 1 intersects with each other. As shown in FIGS. 1 and 11, the tube axis X1 of each fluid tube 1 has the same crossing angle θ with respect to the horizontal axis X2.
In this embodiment, a case where the intersection angle θ between the pipe axis X1 and the horizontal axis X2 of both fluid tubes 1 is the same will be described, but the tube axis X1 and the horizontal axis X2 of both fluid tubes 1 will be described. In the case where the intersection angle θ with and is different, or the pipe axis X1 of one fluid tube 1 is in a state along the horizontal axis X2, and only the tube axis X1 of the other fluid tube 1 is relative to the horizontal axis X2. It is also possible that the vehicle is tilted. The technique of the present invention can be applied to any case.

［２］継ぎ輪取付け工程
図１に示すように、両流体管１のうち、後述の切断機４における管軸芯Ｘ１方向の両側部に装備される切断ユニット４０の切削バイト４１（図２参照）に対応する両切断分離予定位置ＣＰ間が切断除去領域Ｌとなる。この切断除去領域Ｌには、管継手１８を有する切断除去予定管部（切断後は切断除去管部）１Ａが位置する。
切断除去予定管部１Ａに連続する両切断残置予定管部１Ｂには、図１０に示すように、両流体管１の切断残置管部１Ｂの端部とバルブ２の第１接続筒部２１とを密封状態（水密状態）に接続する分割構造の継ぎ輪５が管軸芯方向に摺動自在に取付けられている。
継ぎ輪５は、両流体管１に対して管径方向の両側方から外嵌装着自在な二分割構造の半円筒状の分割継ぎケース５１から構成されている。両分割継ぎケース５１は、ボルト５２・ナット５３で連結されている。各分割継ぎケース５１の内面には、図９、図１０に示すように、流体管１の切断残置管部１Ｂの外周面とバルブ２の第１接続筒部２１の外周面との間を密封する第１シール材５４が装着されている。 [2] Joint ring mounting process As shown in FIG. 1, the cutting bites 41 of the cutting unit 40 provided on both sides of both fluid pipes 1 in the direction of the pipe axis X1 in the cutting machine 4 described later (see FIG. 2). ) Corresponds to the cut removal region L between the two planned separation positions CP. In this cutting / removing region L, a pipe portion to be cut / removed (cutting / removing pipe portion after cutting) 1A having a pipe joint 18 is located.
As shown in FIG. 10, the two pipes 1B scheduled to be cut and removed, which are continuous with the pipe 1A to be cut and removed, include the end of the cut remaining pipe 1B of both fluid pipes 1 and the first connection cylinder 21 of the valve 2. A joint ring 5 having a split structure for connecting and to a sealed state (watertight state) is slidably attached in the direction of the pipe axis.
The joint ring 5 is composed of a semi-cylindrical split joint case 51 having a two-split structure that can be fitted and attached to both fluid pipes 1 from both sides in the pipe radial direction. Both split joint cases 51 are connected by bolts 52 and nuts 53. As shown in FIGS. 9 and 10, the inner surface of each split joint case 51 is provided between the outer peripheral surface of the cut residual pipe portion 1B of the fluid pipe 1 and the outer peripheral surface of the first connection cylinder portion 21 of the valve 2. A first sealing material 54 for sealing is attached.

継ぎ輪５は、両流体管１の両切断残置予定管部１Ｂへの取付け後に、継ぎ輪５の内面と切断残置予定管部１Ｂの外周面との間の密封された内部空間に試験流体（試験水）を加圧供給して漏水等の流体圧試験を行う。
また、継ぎ輪５がダクタイル鋳鉄製（ＦＣＤ製）である場合には、図１に示すように、ボルト５２・ナット５３により円環筒状に連結する。また、継ぎ輪５が一般構造用圧延鋼材製（ＳＳ製）である場合には、溶接にて円環筒状に一体形成する。 After the joint ring 5 is attached to the pipe portion 1B to be left uncut, the test fluid (2) is placed in a sealed internal space between the inner surface of the joint ring 5 and the outer peripheral surface of the pipe portion 1B to be left uncut. Test water) is supplied under pressure to perform a fluid pressure test such as water leakage.
When the joint ring 5 is made of ductile cast iron (made of FCD), it is connected in an annulus cylinder shape by bolts 52 and nuts 53 as shown in FIG. When the joint ring 5 is made of rolled steel for general structure (made of SS), it is integrally formed into an annular cylinder by welding.

［３］切断機取付け工程
両流体管１の切断除去予定管部１Ａには、図２に示すように、流体管１の切断除去予定管部１Ａを、両流体管１での流体の流れを維持した不断流状態（不断水状態）で切断する切断機４を取付ける。切断機４としては、従来から種々の形態のものが存在し、そのいずれの形態の切断機４も好適に使用することができる。本実施形態においては、切断機４における管軸芯Ｘ１方向の両側部に、両流体管１の両切断分離予定位置ＣＰに沿って回転自在で、且つ、管径方内方側に送り込み可能な切削バイト４１を備えた切断ユニット４０が設けられている。 [3] Cutting machine mounting process As shown in FIG. 2, the pipe portion 1A scheduled to be cut and removed from both fluid pipes 1 is provided with the pipe portion 1A scheduled to be cut and removed from both fluid pipes 1 and the flow of fluid in both fluid pipes 1. Install the cutting machine 4 that cuts in the maintained continuous flow state (continuous water state). As the cutting machine 4, various forms have been conventionally used, and any form of the cutting machine 4 can be preferably used. In the present embodiment, both fluid pipes 1 can be rotated along the CP at the planned cutting separation position CP of both fluid pipes 1 and can be fed inward in the direction of the pipe diameter to both sides of the pipe axis X1 direction in the cutting machine 4. A cutting unit 40 provided with a cutting tool 41 is provided.

［４］ハウジング取付け工程
図２、図３に示すように、流体管１の切断除去予定管部１Ａよりも少し広い領域を密封状態で囲繞するハウジング６を取付ける。ハウジング６は、流体管１の切断除去予定管部１Ａ及び両切断残置予定管部１Ｂに対して密封状態で下方から覆う上向き開口の下部ケース６１と、切断除去予定管部１Ａ及び切断残置予定管部１Ｂに対して密封状態で上方から覆う下向き開口の上部ケース６２と、作業用仕切弁７の弁ケース７１と、切断機４又はバルブ２を格納可能な格納空間６３を備えた上部タンク６４と、を主要構成として備えている。 [4] Housing Mounting Process As shown in FIGS. 2 and 3, a housing 6 that surrounds a slightly wider area of the fluid pipe 1 than the pipe portion 1A scheduled to be cut and removed in a sealed state is mounted. The housing 6 includes a lower case 61 having an upward opening that covers the fluid pipe 1 from below in a sealed state with respect to the pipe portion 1A to be cut and removed and the pipe portion 1B to be left uncut, and the pipe portion 1A to be cut and removed and the pipe to be left uncut. An upper case 62 having a downward opening that covers the portion 1B from above in a sealed state, a valve case 71 of a work sluice valve 7, and an upper tank 64 having a storage space 63 capable of storing a cutting machine 4 or a valve 2. , Is provided as the main configuration.

図２、図３に示すように、ハウジング６の下部ケース６１と上部ケース６２とで構成される両管装着部と両切断残置予定管部１Ｂの外周面との間の環状空隙からの流体の漏洩を防止する漏洩防止金具８を設ける。この漏洩防止金具８には、図９に示すように、ハウジング６側の管装着部と切断残置予定管部１Ｂの外周面との間の環状空隙に装着される第２シール材８１と、第２シール材８１を水密状態に圧縮する状態でハウジング６に固定されるシール押圧部材８２と、が備えられている。
第２シール材８１は、両流体管１の交差による管周方向での不均一な環状隙間を密封可能な厚みを備えている。 As shown in FIGS. 2 and 3, the fluid from the annular gap between the pipe mounting portion composed of the lower case 61 and the upper case 62 of the housing 6 and the outer peripheral surface of the pipe portion 1B scheduled to be left uncut. A leak prevention metal fitting 8 for preventing leakage is provided. As shown in FIG. 9, the leakage prevention metal fitting 8 includes a second sealing material 81 mounted in the annular gap between the pipe mounting portion on the housing 6 side and the outer peripheral surface of the pipe portion 1B to be left uncut, and a second sealing material 81. 2 A seal pressing member 82, which is fixed to the housing 6 in a state where the seal material 81 is compressed into a watertight state, is provided.
The second sealing material 81 has a thickness capable of sealing a non-uniform annular gap in the pipe circumferential direction due to the intersection of both fluid pipes 1.

上部タンク６４のフランジ蓋６４Ｂには、切断機４の切断伝動ケース４２又はバルブ２の蓋体２４の筒状ケース部２５に対して選択的に固定連結可能な昇降筒軸４３が昇降自在に設けられている。この昇降筒軸４３の上部には、昇降筒軸４３内の伝動軸（図示省略）を介して切断機４を駆動する電動モータ４４が設けられている。 The flange lid 64B of the upper tank 64 is provided with an elevating cylinder shaft 43 that can be selectively fixedly connected to the cutting transmission case 42 of the cutting machine 4 or the tubular case portion 25 of the lid 24 of the valve 2 so as to be able to move up and down. Has been done. An electric motor 44 that drives the cutting machine 4 via a transmission shaft (not shown) in the elevating cylinder shaft 43 is provided above the elevating cylinder shaft 43.

また、下部ケース６１及び上部ケース６２の管軸芯Ｘ１方向で対面する側壁部６１Ａ，６２Ａには、切断後におけるハウジング６の外部からの操作により、各切断残置管部１Ｂに装着されている継ぎ輪５を切断残置管部１Ｂとバルブ２の第１接続筒部２１とに跨る密封接続位置にまで管軸芯Ｘ１方向に摺動させるフィダー装置９が備えられている。フィダー装置９は、継ぎ輪５の他端側の第３連結フランジ５６をバルブ２側に押圧操作する複数本の操作ネジ軸９１から構成されている。 Further, the side wall portions 61A and 62A facing the pipe axis X1 direction of the lower case 61 and the upper case 62 are attached to the remaining cut pipe portions 1B by an operation from the outside of the housing 6 after cutting. A feeder device 9 for sliding the joint ring 5 in the pipe axis X1 direction to a sealed connection position straddling the cut remaining pipe portion 1B and the first connection cylinder portion 21 of the valve 2 is provided. The feeder device 9 is composed of a plurality of operating screw shafts 91 that press the third connecting flange 56 on the other end side of the joint ring 5 toward the valve 2.

［５］管切断工程
図３に示すように、電動モータ４４を起動すると、切削バイト４１を備えた切断ユニット４０が駆動回転する。切断ユニット４０の切削バイト４１は、切断ユニット４０の回転経路脇の特定位置において管径方向内方に単位送り量だけ送り込まれながら両切断残置管部１Ｂの切断端面となる切断分離予定位置ＣＰにおいて管周方向に沿って移動し、不断流状態のまま既設流体管１の切断除去予定管部１Ａを設定切断幅長さで輪切り状に切断除去する。
切断が完了すると、上部タンク６４のフランジ蓋６４Ｂに対して昇降筒軸４３をクレーン等の吊り上げ手段で上昇させ、切断機４を切断除去管部１Ａと共に上部タンク６４の格納空間６３内に取り出す。次に、図４に示すように、作業用仕切弁７の弁体７２を閉弁操作し、上部タンク６４のタンク本体６４Ａとフランジ蓋６４Ｂとの連結を解除し、切断機４を切断除去管部１Ａ及びフランジ蓋６４Ｂと共にハウジング６外に搬出する。 [5] Pipe cutting process As shown in FIG. 3, when the electric motor 44 is started, the cutting unit 40 provided with the cutting tool 41 is driven and rotated. The cutting bit 41 of the cutting unit 40 is a planned cutting separation position CP which becomes the cutting end face of both cutting remaining pipe portions 1B while being fed inward in the pipe radial direction by a unit feed amount at a specific position beside the rotation path of the cutting unit 40. The pipe portion 1A scheduled to be cut and removed from the existing fluid pipe 1 is cut and removed in a round slice shape with a set cutting width and length while moving along the pipe circumferential direction.
When the cutting is completed, the elevating cylinder shaft 43 is lifted with respect to the flange lid 64B of the upper tank 64 by a lifting means such as a crane, and the cutting machine 4 is taken out together with the cutting removal pipe portion 1A into the storage space 63 of the upper tank 64. Next, as shown in FIG. 4, the valve body 72 of the work sluice valve 7 is closed, the connection between the tank body 64A of the upper tank 64 and the flange lid 64B is released, and the cutting machine 4 is cut and removed. It is carried out of the housing 6 together with the portion 1A and the flange lid 64B.

［６］当接状態修正工程
図５、図６に示すように、ハウジング６外の所定作業箇所（工場を含む）において、バルブ２の第１連結フランジ２３と継ぎ輪５の第２連結フランジ５５とを面当たり状態に修正する当接状態修正工程を実行する。この当接状態修正工程には、両流体管１の交差角度と同一又は略同一の傾斜角を付加して、バルブ２の第１連結フランジ２３と継ぎ輪５の第２連結フランジ５５とを面当たり状態に修正する角度調整手段１０が備えられている。この角度調整手段１０の一例として、バルブ２の第１連結フランジ２３とこれに管軸芯方向で対面する継ぎ輪５の第２連結フランジ５５との間において締結手段３のボルト３１・ナット３２で共締め固定可能な円環状の角度調整体１００を用いる。 [6] Contact state correction step As shown in FIGS. 5 and 6, at a predetermined work location (including a factory) outside the housing 6, the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 are used. The contact state correction step of correcting and to the surface contact state is executed. In this contact state correction step, the same or substantially the same inclination angle as the intersection angle of both fluid pipes 1 is added, and the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 are surfaced. The angle adjusting means 10 for correcting the hit state is provided. As an example of the angle adjusting means 10, the bolt 31 and the nut 32 of the fastening means 3 are used between the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 facing the first connecting flange 23 in the pipe axis direction. An annular angle adjusting body 100 that can be fastened and fixed together is used.

角度調整体１００は、両流体管１の交差角度の１／２の交差角度（各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θ）でテーパ状に形成された二枚の円環状のテーパフランジ１０１から構成されている。各テーパフランジ１０１は金属板（例えば、一般構造用圧延鋼材）の切削加工で製作されている。
各テーパフランジ１０１には、図１０に示すように、バルブ２の第１連結フランジ２３に対してシート状の第１パッキン１０２を介して管軸芯Ｘ１方向から面当たり状態で当接する円環状の第１当接面１０１ａと、継ぎ輪５の第２連結フランジ５５に対してシート状の第２パッキン１０３を介して管軸芯Ｘ１方向から面当たり状態で当接する円環状の第２当接面１０１ｂとが形成されている。
図６（ｂ）に示すように、各テーパフランジ１０１の第１当接面１０１ａと第２当接面１０１ｂとで形成される第２交差角度θ１が、両流体管１の交差角度の１／２の角度となり、各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θ（図１、図１１参照）となる。各テーパフランジ１０１をバルブ２の両第１連結フランジ２３に取付けることにより、両流体管１の交差角度を吸収して、バルブ２の第１連結フランジ２３と継ぎ輪５の第２連結フランジ５５とを面当たり状態に修正することができる。 The angle adjusting body 100 is formed in a tapered shape at an intersection angle of 1/2 of the intersection angle of both fluid pipes 1 (intersection angle θ between the pipe axis X1 and the horizontal axis X2 of each fluid tube 1). It is composed of an annular tapered flange 101. Each tapered flange 101 is manufactured by cutting a metal plate (for example, a rolled steel material for general structure).
As shown in FIG. 10, each tapered flange 101 has an annular shape that comes into contact with the first connecting flange 23 of the valve 2 from the direction of the pipe axis X1 via a sheet-shaped first packing 102. An annular second contact surface that contacts the first contact surface 101a and the second connecting flange 55 of the joint ring 5 in a surface contact state from the pipe axis X1 direction via the sheet-shaped second packing 103. 101b is formed.
As shown in FIG. 6B, the second crossing angle θ1 formed by the first contact surface 101a and the second contact surface 101b of each tapered flange 101 is 1 / of the crossing angle of both fluid pipes 1. The angle is 2, and the intersection angle θ between the pipe axis X1 and the horizontal axis X2 of each fluid pipe 1 (see FIGS. 1 and 11). By attaching each tapered flange 101 to both first connecting flanges 23 of the valve 2, the intersection angle of both fluid pipes 1 is absorbed, and the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 Can be modified to a face-to-face condition.

図６（ａ）に示すように、各テーパフランジ１０１には、締結手段３のボルト３１が挿通される複数のボルト挿通孔１０４と、バルブ２の第１連結フランジ２３に対する複数の取付け部であるネジ孔１０５とが形成されている。バルブ２の第１連結フランジ２３には、締結手段３のボルト３１が挿通される複数の第１ボルト挿通孔（図示省略）と、テーパフランジ１０１のネジ孔１０５に螺合される仮止め用ボルト１０６が挿通される複数の第２ボルト挿通孔（図示省略）とが形成されている。 As shown in FIG. 6A, each tapered flange 101 has a plurality of bolt insertion holes 104 into which the bolts 31 of the fastening means 3 are inserted, and a plurality of attachment portions for the first connecting flange 23 of the valve 2. A screw hole 105 is formed. The first connecting flange 23 of the valve 2 has a plurality of first bolt insertion holes (not shown) through which the bolt 31 of the fastening means 3 is inserted, and a temporary fixing bolt screwed into the screw hole 105 of the taper flange 101. A plurality of second bolt insertion holes (not shown) through which the 106 is inserted are formed.

そして、図５に示すように、バルブ２の両第１接続筒部２１に外装した各テーパフランジ１０１の第１当接面１０１ａを、バルブ２の第１連結フランジ２３に対してシート状の第１パッキン１０２（図１０参照）を介在した状態で管軸芯Ｘ１方向から面当たり状態で当接する。この当接したテーパフランジ１０１のネジ孔１０５（図６（ａ）参照）とバルブ２の第１連結フランジ２３の第２ボルト挿通孔とが合致するように調整し、第１連結フランジ２３の第２ボルト挿通孔に対して筐体２０側から挿入した仮止め用ボルト１０６をテーパフランジ１０１のネジ孔１０５に螺合し、各テーパフランジ１０１をバルブ２の第１連結フランジ２３に密封状態（水密状態）で固定連結する。
また、バルブ２の第１連結フランジ２３に固定連結されているテーパフランジ１０１の第２当接面１０１ｂには、継ぎ輪５の第２連結フランジ５５との間を密封する第２パッキン１０３（図１０参照）を貼着する。 Then, as shown in FIG. 5, the first contact surface 101a of each tapered flange 101 externally attached to both first connecting cylinders 21 of the valve 2 is formed into a sheet shape with respect to the first connecting flange 23 of the valve 2. 1 With the packing 102 (see FIG. 10) interposed therebetween, abutment is made from the direction of the tube axis X1 in a surface contact state. Adjust so that the screw hole 105 (see FIG. 6A) of the tapered flange 101 that comes into contact with the valve 2 and the second bolt insertion hole of the first connecting flange 23 of the valve 2 match, and adjust the first connecting flange 23. Temporary fixing bolts 106 inserted from the housing 20 side into the 2-bolt insertion holes are screwed into the screw holes 105 of the tapered flange 101, and each tapered flange 101 is sealed to the first connecting flange 23 of the valve 2 (watertight). Fixed connection in the state).
Further, the second packing 103 (FIG. 3) is sealed between the second contact surface 101b of the tapered flange 101, which is fixedly connected to the first connecting flange 23 of the valve 2, and the second connecting flange 55 of the joint ring 5. 10) is attached.

［７］バルブ搬入工程
図５、図７に示すように、テーパフランジ１０１が固定されているバルブ２の上部の筒状ケース部２５に、昇降筒軸４３の下端部を固定連結し、昇降筒軸４３にフランジ蓋６４Ｂを摺動自在に取付ける。次に、図７に示すように、バルブ２が取付けられている昇降筒軸４３をクレーン等の吊り上げ手段で吊り上げ搬送し、バルブ２を上部タンク６４の格納空間６３内に格納する。上部タンク６４のタンク本体６４Ａとフランジ蓋６４Ｂとを密封状態で固定連結する。
次に、図８に示すように、ハウジング６の下部ケース６１及び上部ケース６２で形成されている下側内部空間６５と上部タンク６４の格納空間６３とを同圧に調整し、作業用仕切弁７の弁体７２を開弁操作する。
上部タンク６４のフランジ蓋６４Ｂに対して昇降筒軸４３を吊り上げ手段で下降させ、バルブ２の両第１接続筒部２１を両切断残置管部１Ｂの切断端面間の所定搬入位置、つまり、バルブ２の両第１接続筒部２１の筒軸芯が両切断残置管部１Ｂの管軸芯Ｘ１と同芯又は略同芯となる所定搬入位置にまで搬入する。 [7] Valve Carrying Process As shown in FIGS. 5 and 7, the lower end portion of the elevating cylinder shaft 43 is fixedly connected to the tubular case portion 25 above the valve 2 to which the tapered flange 101 is fixed, and the elevating cylinder The flange lid 64B is slidably attached to the shaft 43. Next, as shown in FIG. 7, the elevating cylinder shaft 43 to which the valve 2 is attached is lifted and conveyed by a lifting means such as a crane, and the valve 2 is stored in the storage space 63 of the upper tank 64. The tank body 64A of the upper tank 64 and the flange lid 64B are fixedly connected in a sealed state.
Next, as shown in FIG. 8, the lower internal space 65 formed by the lower case 61 and the upper case 62 of the housing 6 and the storage space 63 of the upper tank 64 are adjusted to the same pressure, and the work sluice valve is adjusted. The valve body 72 of No. 7 is opened.
The elevating cylinder shaft 43 is lowered with respect to the flange lid 64B of the upper tank 64 by a lifting means, and both first connecting cylinders 21 of the valve 2 are brought into a predetermined carry-in position between the cut end faces of both cut remaining pipes 1B, that is, The cylinder shaft core of both first connection cylinder portions 21 of the valve 2 is carried in to a predetermined carry-in position where the cylinder shaft core of both cut remaining pipe portions 1B is concentric or substantially concentric with the pipe shaft core X1.

［８］継ぎ輪接続工程
図９、図１０に示すように、ハウジング６の管軸芯Ｘ１方向で対面する側壁部６１Ａ，６２Ａに組み付けられているフィダー装置９の操作ネジ軸９１を螺合操作すると、各切断残置管部１Ｂに装着されている継ぎ輪５がバルブ２側に押し込み移動される。各継ぎ輪５は、切断残置管部１Ｂの外周面とバルブ２の第１接続筒部２１の外周面とに跨る密封接続位置にまで管軸芯Ｘ１方向に沿って摺動される。
このとき、継ぎ輪５の第２連結フランジ５５は、図１０に示すように、バルブ２の第１連結フランジ２３に固定連結されているテーパフランジ１０１の第２当接面１０１ｂに対して第２パッキン１０３を介して管軸芯Ｘ１方向から密封状態に押圧された状態にある。 [8] Joint ring connection process As shown in FIGS. 9 and 10, the operation screw shaft 91 of the feeder device 9 assembled to the side wall portions 61A and 62A facing the pipe axis X1 direction of the housing 6 is screwed. Then, the joint ring 5 mounted on each cut remaining pipe portion 1B is pushed and moved to the valve 2 side. Each joint ring 5 is slid along the pipe axis X1 direction to a sealed connection position straddling the outer peripheral surface of the cut residual pipe portion 1B and the outer peripheral surface of the first connection cylinder portion 21 of the valve 2.
At this time, as shown in FIG. 10, the second connecting flange 55 of the joint ring 5 is second with respect to the second contact surface 101b of the tapered flange 101 fixedly connected to the first connecting flange 23 of the valve 2. It is in a state of being pressed in a sealed state from the direction of the tube axis X1 via the packing 103.

そして、両流体管１の交差により、例えば、図１０に示すように、継ぎ輪５の内面とバルブ２の第１接続筒部２１の外周面との間を密封する第１シール材５４の一部が、切断残置管部１Ｂの切断端面と第１接続筒部２１の端面との間に位置し、この部位でのシール性能が低下している可能性がある。
しかし、本実施形態においては、各テーパフランジ１０１の第１当接面１０１ａと第２当接面１０１ｂとで形成される第２交差角度θ１が、両流体管１の交差角度の１／２の交差角度となり、各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θに設定されている。そのため、各テーパフランジ１０１を介して、バルブ２の第１連結フランジ２３と継ぎ輪５の第２連結フランジ５５とは面当たり状態に修正されている。
したがって、フィダー装置９の操作ネジ軸９１による押し込み操作により、バルブ２の第１連結フランジ２３と継ぎ輪５の第２連結フランジ５５とは、それら両者間に介装されている第１パッキン１０２とテーパフランジ１０１及び第２パッキン１０３とを面当たり状態で均等に狭圧することになり、バルブ２の第１連結フランジ２３と継ぎ輪５の第２連結フランジ５５との間が所定の水密状態に維持される。 Then, by intersecting the two fluid pipes 1, for example, as shown in FIG. 10, one of the first sealing materials 54 that seals between the inner surface of the joint ring 5 and the outer peripheral surface of the first connecting cylinder portion 21 of the valve 2. The portion is located between the cut end face of the cut residual pipe portion 1B and the end face of the first connection cylinder portion 21, and there is a possibility that the sealing performance at this portion is deteriorated.
However, in the present embodiment, the second crossing angle θ1 formed by the first contact surface 101a and the second contact surface 101b of each tapered flange 101 is 1/2 of the crossing angle of both fluid pipes 1. The crossing angle is set to the crossing angle θ between the pipe axis X1 and the horizontal axis X2 of each fluid pipe 1. Therefore, the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 are corrected to a surface contact state via each tapered flange 101.
Therefore, the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 are connected to the first packing 102 interposed between the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 by the pushing operation by the operating screw shaft 91 of the feeder device 9. The tapered flange 101 and the second packing 103 are uniformly narrowed in a surface contact state, and the space between the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 is maintained in a predetermined watertight state. Will be done.

［９］継ぎ輪固定工程
ハウジング６の上部ケース６２から上部タンク６４及び作業用仕切弁７を撤去する。次に、図１１に示すように、バルブ２の第１連結フランジ２３とテーパフランジ１０１及び継ぎ輪５の第２連結フランジ５５とを、締結手段３のボルト３１・ナット３２で固定連結する。
その後、ハウジング６の下部ケース６１及び上部ケース６２を撤去する。バルブ２の蓋体２４の筒状ケース部２５には、図１１に示すように、減速機２６を取付けるとともに、各継ぎ輪５の第３連結フランジ５６には、継ぎ輪５の内面と切断残置管部１Ｂの外周面との間の環状隙間に装着したシール材（図示省略）を密封状態に圧縮する分割構造の押輪１１をボルト１１１・ナット１１２で固定連結する。
また、押輪１１には、流体管１の外周面に食い込み可能な抜止爪（図示省略）と、両流体管１の離脱移動に伴って抜止爪を喰い込み側である径方向内方側に誘導案内する抜け止めボルト１１３が設けられている。
そして、上述の流体機器接続工法の各工程の実行により、図１１に示す流体機器接続構造が構成される。 [9] Joint ring fixing step The upper tank 64 and the work sluice valve 7 are removed from the upper case 62 of the housing 6. Next, as shown in FIG. 11, the first connecting flange 23 of the valve 2 and the tapered flange 101 and the second connecting flange 55 of the joint ring 5 are fixedly connected by the bolt 31 and the nut 32 of the fastening means 3.
After that, the lower case 61 and the upper case 62 of the housing 6 are removed. As shown in FIG. 11, a speed reducer 26 is attached to the tubular case portion 25 of the lid body 24 of the valve 2, and the inner surface of the joint ring 5 and the uncut portion are attached to the third connecting flange 56 of each joint ring 5. A push ring 11 having a split structure for compressing a sealing material (not shown) attached to the annular gap between the pipe placement portion 1B and the outer peripheral surface in a sealed state is fixedly connected by bolts 111 and nuts 112.
Further, the push ring 11 has a retaining claw (not shown) that can bite into the outer peripheral surface of the fluid pipe 1 and guides the retaining claw to the radial inward side that is the biting side as both fluid pipes 1 separate and move. A retaining bolt 113 for guiding is provided.
Then, by executing each step of the above-mentioned fluid equipment connection method, the fluid equipment connection structure shown in FIG. 11 is constructed.

〔第２実施形態〕
上述の第１実施形態では、角度調整体１００の両テーパフランジ１０１を、バルブ２の両第１連結フランジ２３に取付けたが、図１２に示すように、両流体管１の切断残置予定管部（切断後は切断残置管部）１Ｂに装着される継ぎ輪５の第２連結フランジ５５に、角度調整体１００の両テーパフランジ１０１を取付けてもよい。
この実施形態の場合、各テーパフランジ１０１は、両流体管１に対して管径方向の両側方から外嵌装着自在な二分割構造の半円筒状の分割テーパフランジ体１０１Ａ，１０１Ｂから構成される。両分割テーパフランジ体１０１Ａ，１０１Ｂの管周方向両端部は、ボルト等で脱着自在に固定連結される。 [Second Embodiment]
In the above-described first embodiment, both tapered flanges 101 of the angle adjusting body 100 are attached to both first connecting flanges 23 of the valve 2, but as shown in FIG. 12, the pipe portion to be left uncut for both fluid pipes 1. (After cutting, the remaining cut pipe portion) The both tapered flanges 101 of the angle adjusting body 100 may be attached to the second connecting flange 55 of the joint ring 5 mounted on 1B.
In the case of this embodiment, each tapered flange 101 is composed of semi-cylindrical split tapered flange bodies 101A and 101B having a two-split structure that can be fitted and mounted from both sides in the pipe radial direction with respect to both fluid pipes 1. .. Both ends of the split tapered flange bodies 101A and 101B in the pipe circumferential direction are fixedly connected by bolts or the like so as to be detachable.

各テーパフランジ１０１の第１当接面１０１ａと第２当接面１０１ｂとで形成される第２交差角度θ１（図６（ｂ）参照）は、両流体管１の交差角度の１／２の交差角度となり、各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θ（図１１参照）となる。各テーパフランジ１０１を継ぎ輪５の第２連結フランジ５５に取付けることにより、両流体管１の交差角度を吸収して、バルブ２の第１連結フランジ２３と継ぎ輪５の第２連結フランジ５５とを面当たり状態に修正することができる。 The second crossing angle θ1 (see FIG. 6B) formed by the first contact surface 101a and the second contact surface 101b of each tapered flange 101 is 1/2 of the crossing angle of both fluid pipes 1. It becomes the intersection angle, and becomes the intersection angle θ (see FIG. 11) between the pipe axis X1 and the horizontal axis X2 of each fluid pipe 1. By attaching each tapered flange 101 to the second connecting flange 55 of the joint ring 5, the intersection angle of both fluid pipes 1 is absorbed, and the first connecting flange 23 of the valve 2 and the second connecting flange 55 of the joint ring 5 Can be modified to a face-to-face condition.

そして、両流体管１の切断残置予定管部１Ｂに外装した各テーパフランジ１０１の第２当接面１０１ｂを、継ぎ輪５の第２連結フランジ５５に対してシート状の第２パッキン１０３を介在した状態で管軸芯Ｘ１方向から面当たり状態で当接する。この当接したテーパフランジ１０１と継ぎ輪５の第２連結フランジ５５とをボルトで仮固定する。
尚、その他の構成は、第１実施形態で説明した構成と同一であるから、同一の構成箇所には、第１実施形態と同一の番号を付記してそれの説明は省略する。 Then, the second contact surface 101b of each tapered flange 101 that is externally attached to the pipe portion 1B to be left uncut of both fluid pipes 1 is interposed with the second connecting flange 55 of the joint ring 5 with a sheet-shaped second packing 103. In this state, the tube shaft core X1 is in contact with the surface in a surface contact state. The abutted tapered flange 101 and the second connecting flange 55 of the joint ring 5 are temporarily fixed with bolts.
Since the other configurations are the same as the configurations described in the first embodiment, the same numbers as those in the first embodiment are added to the same configuration parts, and the description thereof will be omitted.

〔第３実施形態〕
上述の第１実施形態では、角度調整体１００の両テーパフランジ１０１を、バルブ２の両第１連結フランジ２３とは別体に構成したが、図１３に示すように、角度調整体１００の両テーパフランジ１０１とバルブ２の両第１連結フランジ２３とを溶接や鋳造等で一体形成してもよい。
図１３には、バルブ２の両第１連結フランジ２３と両テーパフランジ１０１との境界線ｂを一点鎖線で示す。
尚、その他の構成は、第１実施形態で説明した構成と同一であるから、同一の構成箇所には、第１実施形態と同一の番号を付記してそれの説明は省略する。 [Third Embodiment]
In the above-described first embodiment, both the tapered flanges 101 of the angle adjusting body 100 are configured separately from the both first connecting flanges 23 of the valve 2, but as shown in FIG. 13, both of the angle adjusting bodies 100 The tapered flange 101 and both first connecting flanges 23 of the valve 2 may be integrally formed by welding, casting, or the like.
In FIG. 13, the boundary line b between the first connecting flange 23 of the valve 2 and the tapered flange 101 is shown by a alternate long and short dash line.
Since the other configurations are the same as the configurations described in the first embodiment, the same numbers as those in the first embodiment are added to the same configuration parts, and the description thereof will be omitted.

〔第４実施形態〕
図１４、図１５は、流体機器として、フランジレスバルブ２Ａの一例であるバタフライ弁を用いた実施形態を示す。フランジレスバルブ２Ａは、一対の特殊短管（接続管の一例）１２０で管軸芯Ｘ１方向から挟み込んで密封状態（水密状態）に固定連結されている。各特殊短管１２０には、フランジレスバルブ２Ａの管軸芯Ｘ１方向両側の管接続面に対して管軸芯Ｘ１方向から当接可能な第５連結フランジ１２１と、継ぎ輪５の第２連結フランジ５５に対して管軸芯Ｘ１方向から当接可能な第６連結フランジ１２２とが一体形成されている。第５連結フランジ１２１は、特殊短管１２０の一端部に形成されている。第６連結フランジ１２２は、特殊短管１２０の管軸芯Ｘ１方向の中間部位に形成され、特殊短管１２０の他端部と第６連結フランジ１２２との間に位置する管部は、継ぎ輪５が管軸芯Ｘ１方向から外嵌接続可能な接続管部１２３に構成されている。 [Fourth Embodiment]
14 and 15 show an embodiment using a butterfly valve, which is an example of the flangeless valve 2A, as a fluid device. The flangeless valve 2A is sandwiched between a pair of special short pipes (an example of a connecting pipe) 120 from the direction of the pipe axis X1 and fixedly connected in a sealed state (watertight state). Each special short pipe 120 has a fifth connecting flange 121 capable of contacting the pipe connecting surfaces on both sides of the flangeless valve 2A in the pipe shaft X1 direction from the pipe shaft core X1 direction, and a second connecting of the joint ring 5. A sixth connecting flange 122 that can come into contact with the flange 55 from the pipe axis X1 direction is integrally formed. The fifth connecting flange 121 is formed at one end of the special short pipe 120. The sixth connecting flange 122 is formed at an intermediate portion in the pipe axis X1 direction of the special short pipe 120, and the pipe portion located between the other end of the special short pipe 120 and the sixth connecting flange 122 is a joint ring. Reference numeral 5 denotes a connecting pipe portion 123 that can be externally fitted and connected from the direction of the pipe axis X1.

フランジレスバルブ２Ａの両管接続面と両特殊短管１２０の第５連結フランジ１２１との間の接合部にはシート状の第３パッキン１２４が介在されている。この状態で両特殊短管１２０の第５連結フランジ１２１同士をボルト１２５・ナット１２６で締結し、フランジレスバルブ２Ａと両特殊短管１２０とを密封状態で固定連結する。 A sheet-shaped third packing 124 is interposed at the joint between the connecting surfaces of both pipes of the flangeless valve 2A and the fifth connecting flange 121 of both special short pipes 120. In this state, the fifth connecting flanges 121 of both special short pipes 120 are fastened to each other with bolts 125 and nuts 126, and the flangeless valve 2A and both special short pipes 120 are fixedly connected in a sealed state.

また、両特殊短管１２０の第６連結フランジ１２２と継ぎ輪５の第２連結フランジ５５との間の接合部にはシート状の第４パッキン１２７が介在されている。この状態で、両特殊短管１２０の第６連結フランジ１２２と継ぎ輪５の第２連結フランジ５５とを、締結手段３のボルト３１・ナット（図示省略）で固定連結する。 Further, a sheet-shaped fourth packing 127 is interposed at the joint between the sixth connecting flange 122 of both special short pipes 120 and the second connecting flange 55 of the joint ring 5. In this state, the sixth connecting flange 122 of both special short pipes 120 and the second connecting flange 55 of the joint ring 5 are fixedly connected by bolts 31 and nuts (not shown) of the fastening means 3.

本実施形態においても、図１４、図１５に示すように、ハウジング６外の所定作業箇所（工場を含む）において、両特殊短管１２０の第６連結フランジ１２２と継ぎ輪５の第２連結フランジ５５とを面当たり状態に修正する当接状態修正工程を実行する。この当接状態修正工程には、両流体管１の交差角度と同一又は略同一の傾斜角を付加して、両特殊短管１２０の第６連結フランジ１２２と継ぎ輪５の第２連結フランジ５５とを面当たり状態に修正する角度調整手段１０が備えられている。この角度調整手段１０の一例として、両特殊短管１２０の第６連結フランジ１２２に溶接や鋳造等で一体形成される円環状の角度調整体１００を用いる。 Also in this embodiment, as shown in FIGS. 14 and 15, at a predetermined work location (including a factory) outside the housing 6, the sixth connecting flange 122 of both special short pipes 120 and the second connecting flange of the joint ring 5 are used. The contact state correction step of correcting the contact state with the 55 is executed. In this contact state correction step, the same or substantially the same inclination angle as the intersection angle of both fluid pipes 1 is added, and the sixth connecting flange 122 of both special short pipes 120 and the second connecting flange 55 of the joint ring 5 are added. The angle adjusting means 10 for correcting the contact state with the surface is provided. As an example of the angle adjusting means 10, an annular angle adjusting body 100 integrally formed with the sixth connecting flange 122 of both special short pipes 120 by welding, casting, or the like is used.

角度調整体１００は、両流体管１の交差角度の１／２の交差角度（各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θ）でテーパ状に形成された円環状の両テーパフランジ１０１から構成されている。この両テーパフランジ１０１と両特殊短管１２０の第６連結フランジ１２２との境界線ｂを図１５の一点鎖線で示す。
両特殊短管１２０の第６連結フランジ１２２に一体形成されたテーパフランジ１０１の各々には、図１５に示すように、継ぎ輪５の第２連結フランジ５５に対してシート状の第４パッキン１２７を介して管軸芯Ｘ１方向から面当たり状態で当接する円環状の当接面が形成されている。 The angle adjusting body 100 is an annular shape formed in a tapered shape at an intersection angle of 1/2 of the intersection angle of both fluid pipes 1 (intersection angle θ between the pipe axis X1 and the horizontal axis X2 of each fluid tube 1). It is composed of both tapered flanges 101. The boundary line b between the two tapered flanges 101 and the sixth connecting flange 122 of both special short pipes 120 is shown by the alternate long and short dash line in FIG.
As shown in FIG. 15, each of the tapered flanges 101 integrally formed with the sixth connecting flange 122 of both special short pipes 120 has a sheet-shaped fourth packing 127 with respect to the second connecting flange 55 of the joint ring 5. An annular contact surface is formed which comes into contact with the pipe axis X1 from the direction of the tube axis X1 in a surface contact state.

各継ぎ輪５の第３連結フランジ５６には、図１５に示すように、継ぎ輪５の内面と切断残置管部１Ｂの外周面との間の環状隙間に装着したシール材（図示省略）を密封状態に圧縮する分割構造の押輪１１をボルト１１１・ナット１１２で固定連結する。
また、押輪１１には、流体管１の外周面に食い込み可能な抜止爪（図示省略）と、両流体管１の離脱移動に伴って抜止爪を喰い込み側である径方向内方側に誘導案内する抜け止めボルト１１３が設けられている。 As shown in FIG. 15, a sealing material (not shown) is attached to the third connecting flange 56 of each joint ring 5 in an annular gap between the inner surface of the joint ring 5 and the outer peripheral surface of the cut residual pipe portion 1B. The push ring 11 having a split structure for compressing the seal into a sealed state is fixedly connected with bolts 111 and nuts 112.
Further, the push ring 11 has a retaining claw (not shown) that can bite into the outer peripheral surface of the fluid pipe 1 and guides the retaining claw to the radial inward side that is the biting side as both fluid pipes 1 separate and move. A retaining bolt 113 for guiding is provided.

尚、その他の構成は、第１実施形態で説明した構成と同一であるから、同一の構成箇所には、第１実施形態と同一の番号を付記してそれの説明は省略する。
また、上述の第４実施形態では、テーパフランジ１０１と特殊短管１２０の第６連結フランジ１２２とを一体形成したが、第１実施形態の流体機器接続工法と同様に、両特殊短管１２０の第６連結フランジ１２２と継ぎ輪５の第２連結フランジ５５との間に、独立して製作される円環状の両テーパフランジ１０１を配置し、特殊短管１２０の第６連結フランジ１２２とテーパフランジ１０１と継ぎ輪５の第２連結フランジ５５とを、締結手段３のボルト３１・ナット３２で共締め固定してもよい。 Since the other configurations are the same as the configurations described in the first embodiment, the same numbers as those in the first embodiment are added to the same configuration parts, and the description thereof will be omitted.
Further, in the above-mentioned fourth embodiment, the tapered flange 101 and the sixth connecting flange 122 of the special short pipe 120 are integrally formed, but as in the fluid equipment connection method of the first embodiment, both special short pipes 120 are integrally formed. An annular tapered flange 101 manufactured independently is arranged between the sixth connecting flange 122 and the second connecting flange 55 of the joint ring 5, and the sixth connecting flange 122 and the tapered flange of the special short tube 120 are arranged. The 101 and the second connecting flange 55 of the joint ring 5 may be fastened and fixed together with the bolt 31 and the nut 32 of the fastening means 3.

〔その他の実施形態〕
（１）上述の第１実施形態では、両流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θが同一に現れる事例を挙げ、角度調整体１００として、両流体管１の交差角度の１／２の交差角度（各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θ）でテーパ状に形成された二枚の円環状のテーパフランジ１０１を用いた。しかし、両流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θが異なる事例の場合は、その異なる各交差角度で製作された二枚の円環状のテーパフランジ１０１を用いることになる。
さらに、一方の流体管１の管軸芯Ｘ１が水平軸芯Ｘ２上にあり、他方の流体管１の管軸芯Ｘ１のみが水平軸芯Ｘ２に対して交差している事例の場合は、他方の流体管１の交差角度で製作された一枚の円環状のテーパフランジ１０１を用いることになる。 [Other Embodiments]
(1) In the above-described first embodiment, an example in which the intersection angle θ between the tube axis X1 and the horizontal axis X2 of both fluid tubes 1 appears in the same manner is given, and the intersection of both fluid tubes 1 is used as the angle adjuster 100. Two annular tapered flanges 101 formed in a tapered shape at an intersection angle of 1/2 of the angle (intersection angle θ between the tube axis X1 and the horizontal axis X2 of each fluid tube 1) were used. However, in the case where the intersection angles θ between the pipe axis X1 and the horizontal axis X2 of both fluid pipes 1 are different, it is decided to use two annular tapered flanges 101 manufactured at the different intersection angles. Become.
Further, in the case where the tube axis X1 of one fluid tube 1 is on the horizontal axis X2 and only the tube axis X1 of the other fluid tube 1 intersects the horizontal axis X2, the other A single annular tapered flange 101 manufactured at the intersection angle of the fluid pipe 1 of the above will be used.

（２）上述の第１実施形態では、バルブ２の両第１連結フランジ２３と継ぎ輪５の両第２連結フランジ５５との間の各々に、各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θでテーパ状に形成された一つのテーパフランジ１０１を配置したが、この構成に限定されるものではない。例えば、各流体管１の管軸芯Ｘ１と水平軸芯Ｘ２との交差角度θを複数の角度に分割して、複数の分割角度でテーパ状に形成された複数のテーパフランジ１０１を、バルブ２の両第１連結フランジ２３と継ぎ輪５の両第２連結フランジ５５との間の各々に配置してもよい。 (2) In the above-described first embodiment, the pipe axis X1 and the horizontal shaft of each fluid pipe 1 are located between the first connecting flanges 23 of the valve 2 and the second connecting flanges 55 of the joint ring 5, respectively. One tapered flange 101 formed in a tapered shape at an intersection angle θ with the core X2 is arranged, but the present invention is not limited to this configuration. For example, the intersection angle θ between the pipe axis X1 and the horizontal axis X2 of each fluid pipe 1 is divided into a plurality of angles, and a plurality of tapered flanges 101 formed in a tapered shape at the plurality of division angles are formed by the valve 2. It may be arranged between both first connecting flanges 23 and both second connecting flanges 55 of the joint ring 5.

（３）上述の第１実施形態では、角度調整体１００を、金属板の切削加工で製作された板状のテーパフランジ１０１から構成したが、角度調整体１００を管状体から構成してもよい。 (3) In the above-described first embodiment, the angle adjusting body 100 is composed of a plate-shaped tapered flange 101 manufactured by cutting a metal plate, but the angle adjusting body 100 may be composed of a tubular body. ..

（４）上述の第３実施形態では、角度調整体１００の両テーパフランジ１０１とバルブ２の両第１連結フランジ２３とを溶接等で一体形成したが、角度調整体１００の両テーパフランジ１０１を、継ぎ輪５の第２連結フランジ５５に溶接等で一体形成してもよい。 (4) In the above-described third embodiment, both the tapered flanges 101 of the angle adjusting body 100 and the first connecting flanges 23 of the valve 2 are integrally formed by welding or the like, but both tapered flanges 101 of the angle adjusting body 100 are formed. , The second connecting flange 55 of the joint ring 5 may be integrally formed by welding or the like.

（５）上述の実施形態では、流体機器として、バルブ２の一例である三方弁、フランジレスバルブ２Ａの一例であるバタフライ弁を例示したが、他種のバルブ２であってもよく、さらに、バルブ２以外のＴ字割り継手等であってもよい。 (5) In the above-described embodiment, as the fluid device, a three-way valve as an example of the valve 2 and a butterfly valve as an example of the flangeless valve 2A are exemplified, but other types of valves 2 may be used, and further. It may be a T-shaped split joint other than the valve 2.

１ 流体管
２ 流体機器（バルブ）
２Ａ 流体機器（フランジレスバルブ）
３ 締結手段
５ 継ぎ輪
６ ハウジング
１０ 角度調整手段
２１ 接続筒部（第１接続筒部）
２３ 連結フランジ（第１連結フランジ）
５５ 連結フランジ（第２連結フランジ）
１００ 角度調整体
１０１ テーパフランジ
１０４ ボルト挿通孔
１０５ ネジ孔
Ｘ１ 管軸芯
Ｘ２ 水平軸芯
θ 交差角度 1 Fluid pipe 2 Fluid equipment (valve)
2A fluid equipment (flangeless valve)
3 Fastening means 5 Joint ring 6 Housing 10 Angle adjusting means 21 Connection cylinder part (1st connection cylinder part)
23 Connecting flange (1st connecting flange)
55 Connecting flange (2nd connecting flange)
100 Angle adjuster 101 Tapered flange 104 Bolt insertion hole 105 Screw hole X1 Tube shaft core X2 Horizontal shaft core θ Crossing angle

Claims (6)

管軸芯が交差する両流体管の端部を密封状態で囲繞するハウジング内において、不断流状態で前記両流体管の端部間に流体機器を配置する流体機器配置工程と、
前記ハウジング内において、前記両流体管の端部と前記流体機器の両接続筒部とを摺動可能な継ぎ輪で密封状態に接続する継ぎ輪接続工程と、
前記両継ぎ輪の連結フランジとそれに管軸芯方向で対面する前記流体機器の連結フランジとを締結手段で密封状態に固定連結する固定連結工程と、
を備えた流体機器の接続工法であって、
前記流体機器の前記連結フランジと前記継ぎ輪の前記連結フランジとを面当たり状態に修正する当接状態修正工程が備えられ、前記当接状態修正工程では、管軸芯が水平軸芯と交差する前記流体管に外装された前記継ぎ輪の前記連結フランジと前記流体機器の前記連結フランジとの間に、前記継ぎ輪の前記連結フランジに対する第１当接面及び前記流体機器の前記連結フランジに対する第２当接面を備え、且つ、前記第１当接面と前記第２当接面とで形成される第２交差角度が前記流体管の管軸芯と前記水平軸芯との交差角度に構成されている角度調整体を配置し、前記流体機器の前記連結フランジと前記継ぎ輪の前記連結フランジとを、前記角度調整体を介して面当たり状態に修正する流体機器の接続工法。 In the housing that surrounds the ends of both fluid pipes where the tube shafts intersect in a sealed state, the fluid equipment placement process of arranging the fluid equipment between the ends of both fluid pipes in a continuous flow state,
In the housing, a joint ring connecting step of connecting the ends of both fluid pipes and both connecting cylinders of the fluid device in a sealed state with slidable joint rings.
A fixed connecting step of fixing and connecting the connecting flange of the double joint ring and the connecting flange of the fluid device facing the connecting flange in the direction of the pipe axis in a sealed state by a fastening means.
It is a connection method of fluid equipment equipped with
Abutment correcting step is provided to fix said connecting flange of the collar and the connecting flange of the fluid device in the state per surface, said at contact state altering step, the pipe axis intersects the horizontal axis Between the connecting flange of the joint ring mounted on the fluid pipe and the connecting flange of the fluid device, the first contact surface of the joint ring with respect to the connecting flange and the first contact surface of the fluid device with respect to the connecting flange. It is provided with two contact surfaces, and the second intersection angle formed by the first contact surface and the second contact surface is configured to be the intersection angle between the tube axis of the fluid pipe and the horizontal axis. A method for connecting a fluid device, in which the angle adjusting body is arranged and the connecting flange of the fluid device and the connecting flange of the joint ring are corrected to a surface contact state via the angle adjusting body . 前記角度調整体は、前記流体機器の前記連結フランジとの間及び前記継ぎ輪の前記連結フランジとの間にそれぞれパッキンを介装した状態で前記連結フランジと前記連結フランジとに共締め固定されている請求項１記載の流体機器の接続工法。 The angle adjusting body is fastened and fixed to the connecting flange and the connecting flange together with packings interposed between the connecting flange of the fluid device and the connecting flange of the joint ring, respectively. The method for connecting a fluid device according to claim 1. 前記角度調整体は、前記流体機器の前記連結フランジ又は前記継ぎ輪の前記連結フランジと一体形成されている請求項１記載の流体機器の接続工法。 The angle adjustment member, the coupling flange or the coupling flange and the connection method of a fluid device according to claim 1, wherein are integrally formed of the collar of the fluid device. 前記角度調整体は、前記ハウジング内に搬入される前の前記流体機器の前記連結フランジに、パッキンを介して予め固定連結されている請求項２記載の流体機器の接続工法。 Said angle adjustment body, to the connecting flange of the fluid device prior to being loaded into the said housing, connecting method of the fluid apparatus of the pre-fixed coupled in and claim 2, wherein through the packing. 前記角度調整体には、前記流体管の管軸芯と水平軸芯との交差角度でテーパ状に形成された一つ又は複数のテーパフランジが備えられている請求項１，２，４のいずれか１項に記載の流体機器の接続工法。 Any of claims 1, 2 and 4, wherein the angle adjusting body is provided with one or a plurality of tapered flanges formed in a tapered shape at an angle of intersection between the tube axis of the fluid tube and the horizontal axis. The method for connecting fluid devices according to item 1. 管軸芯が交差する両流体管の端部間に流体機器が配設され、前記両流体管の端部と前記流体機器の両接続筒部とが摺動可能な継ぎ輪で密封状態に接続され、前記各継ぎ輪の連結フランジとこれに管軸芯方向で対面する前記流体機器の連結フランジとが締結手段で密封状態に固定連結されている流体機器の接続構造であって、
管軸芯が水平軸芯と交差する前記流体管に外装された前記継ぎ輪の前記連結フランジと前記流体機器の前記連結フランジとの間に、前記継ぎ輪の前記連結フランジに対する第１当接面及び前記流体機器の前記連結フランジに対する第２当接面を備え、且つ、前記第１当接面と前記第２当接面とで形成される第２交差角度が前記流体管の管軸芯と前記水平軸芯との交差角度に構成されている角度調整体を配置し、前記流体機器の前記連結フランジと前記継ぎ輪の前記連結フランジとを、前記角度調整体を介して面当たり状態に構成する流体機器の接続構造。 A fluid device is arranged between the ends of both fluid tubes where the tube axis intersects, and the ends of both fluid tubes and both connecting cylinders of the fluid device are connected in a sealed state by a slidable joint ring. The fluid device connection structure is such that the connecting flange of each joint ring and the connecting flange of the fluid device facing the connecting wheel in the pipe axis direction are fixedly connected to each other in a sealed state by a fastening means.
A first contact surface of the joint ring with respect to the connecting flange between the connecting flange of the joint ring mounted on the fluid pipe where the pipe axis intersects the horizontal axis and the connecting flange of the fluid device. A second contact surface with respect to the connecting flange of the fluid device is provided, and a second intersection angle formed by the first contact surface and the second contact surface is the tube axis of the fluid pipe. An angle adjusting body configured at an intersection angle with the horizontal axis is arranged, and the connecting flange of the fluid device and the connecting flange of the joint ring are configured to be in a surface contact state via the angle adjusting body. connection structure of a fluid device to be.
JP2017157923A 2017-08-18 2017-08-18 Fluid equipment connection method, fluid equipment connection structure and tapered flange Active JP6921408B2 (en)

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JPS589034Y2 (en) * 1978-06-07 1983-02-18 東京電力株式会社 pipe universal joint
JPS56174778U (en) * 1980-05-29 1981-12-23
US4436326A (en) * 1981-07-13 1984-03-13 Lockheed Corporation Flexible coupling for fluid ducts
JPS59130918U (en) * 1982-03-31 1984-09-03 株式会社神戸製鋼所 Powdered fuel burner installation structure on blast furnace blowpipe
JP2009185953A (en) * 2008-02-07 2009-08-20 Cosmo Koki Co Ltd Water restrictor installation device
JP5124305B2 (en) * 2008-02-18 2013-01-23 コスモ工機株式会社 Water control body installation device
JP5451517B2 (en) * 2010-05-07 2014-03-26 株式会社水道技術開発機構 Pipe joint renewal method for fluid piping system

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