JP5993214B2

JP5993214B2 - Tube unit and gate valve installation method for the tube unit

Info

Publication number: JP5993214B2
Application number: JP2012123733A
Authority: JP
Inventors: 謙介中里
Original assignee: Cosmo Koki Co Ltd
Current assignee: Cosmo Koki Co Ltd
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2016-09-14
Anticipated expiration: 2032-05-30
Also published as: JP2013249863A

Description

本発明は、流体が流れる管路部と、前記管路部に該管路部を仕切る仕切弁を着脱可能に取り付けるための仕切弁手段と、を備える不断流状態での施工に適した管ユニット及び管ユニットに対する仕切弁の設置方法に関する。 The present invention provides a pipe unit suitable for construction in an uninterrupted flow state, comprising: a pipe line part through which fluid flows; and a gate valve means for detachably attaching a gate valve for partitioning the pipe part to the pipe part. And a method of installing a gate valve for the pipe unit.

従来、地中に埋設された水道本管中の流水を止めることなく、不断水の状態で水路の変更をしようとする場合に使用される水路変更用分岐管継手がある。このような分岐管継手では、水道本管の水路を変更しようとする箇所に、２つ割りに構成された止水弁（仕切弁）を嵌挿するための弁筐を有する止水管と、２つ割りに構成された分岐管路継手を有する分岐継手管と、を設置するようにしている。（例えば、特許文献１参照）。尚、近年では、水道本管を設置する際に、止水管と分岐継手管とが一体的に形成された管ユニットも製造されている。 2. Description of the Related Art Conventionally, there is a waterway changing branch pipe joint that is used when changing a waterway in a state of constant water without stopping running water in a water main buried in the ground. In such a branch pipe joint, a water stop pipe having a valve housing for fitting a water stop valve (divided valve) divided in two into a location where the water channel of the water main is to be changed, and 2 And a branch joint pipe having a branch pipe joint configured in a split manner. (For example, refer to Patent Document 1). In recent years, a pipe unit in which a water stop pipe and a branch joint pipe are integrally formed when a water main pipe is installed has also been manufactured.

また、本管部から上方に分岐するようにして突出する分岐管部を設け、この分岐管部を開閉する開閉弁と、分岐管部の上端に接合される弁蓋内に収容される仕切弁体（仕切弁）と、を備える仕切弁装置がある。このような装置では、作業完了後に仕切弁体を撤去して所定の保管場所に保管することで、仕切弁体の経時的劣化を防止するようにしている（例えば、特許文献２参照）。 In addition, a branch pipe part protruding so as to branch upward from the main pipe part is provided, an on-off valve for opening and closing the branch pipe part, and a gate valve accommodated in a valve lid joined to the upper end of the branch pipe part There is a gate valve device including a body (gate valve). In such an apparatus, the gate valve body is removed after completion of the work and stored in a predetermined storage location to prevent deterioration of the gate valve body over time (for example, see Patent Document 2).

実公昭６０−３４３０号公報（第１頁、第１図）Japanese Utility Model Publication No. 60-3430 (first page, FIG. 1) 特開２００１−２７３４９号公報（第２頁、第２図）JP 2001-27349 A (page 2, FIG. 2)

しかしながら、特許文献１に記載の水路変更用分岐管継手にあっては、作業完了後も止水管の止水弁（仕切弁）や分岐継手管に接続される分岐用制水弁（仕切弁）が、そのまま留置されるようになっており、長期間留置されると止水弁や分岐用制水弁に腐食が生じてしまい、再び使用する場合に作動しなくなるという問題がある。 However, in the branch pipe joint for changing a water channel described in Patent Document 1, the water stop valve (gate valve) of the water stop pipe and the water control valve for branch (gate valve) connected to the branch joint pipe even after the work is completed. However, if it is left as it is for a long time, the water stop valve and the water control valve for branching will be corroded, and there is a problem that it will not operate when used again.

また、特許文献２に記載の仕切弁装置にあっても、作業完了後に仕切弁体（仕切弁）を撤去することはできるが、分岐管部を開閉する開閉弁が、そのまま留置されるようになっており、長期間留置されると開閉弁に腐食が生じてしまい、再び使用する場合に作動しなくなるという問題がある。 Further, even in the gate valve device described in Patent Document 2, the gate valve body (gate valve) can be removed after the operation is completed, but the on-off valve for opening and closing the branch pipe portion is left as it is. Therefore, there is a problem that if the valve is left for a long period of time, the on-off valve is corroded and does not operate when used again.

本発明は、このような問題点に着目してなされたもので、不断流工事を行う際には、不断流の状態で仕切弁及び開閉弁を取り付けることができ、長期間留置する際には、仕切弁及び開閉弁を取り外しておくことができる管ユニット及び管ユニットに対する仕切弁の設置方法を提供することを目的とする。 The present invention has been made paying attention to such problems, and when performing uninterrupted flow construction, a gate valve and an on-off valve can be attached in an uninterrupted state. It is an object of the present invention to provide a pipe unit from which a gate valve and an on-off valve can be removed and a method for installing the gate valve for the pipe unit.

前記課題を解決するために、本発明の管ユニットは、
流体が流れる管路部と、該管路部を流れる流体を迂回するための分岐管を取付け可能な分岐部と、を備え、不断流状態で弁装置を取付けるための管ユニットであって、
前記管路部は、該管路部を仕切る仕切弁を挿入可能な挿入部を有する基部フランジと、前記管路部を仕切る仕切弁を取付け可能な仕切弁取付部を有し、該挿入部を開閉する開閉弁を挿入可能に移動できるように前記基部フランジに接続される連結フランジと、
該連結フランジの前記仕切弁取付部に着脱可能に取付けられる蓋部材と、を備え、
前記分岐部は、該分岐部を仕切る仕切弁を挿入可能な挿入部を有する基部フランジと、前記分岐部を仕切る仕切弁を取付け可能な仕切弁取付部を有し、該挿入部を開閉する開閉弁を挿入可能に移動できるように前記基部フランジに接続される連結フランジと、
該連結フランジの前記仕切弁取付部に着脱可能に取付けられる蓋部材と、
を備えることを特徴としている。
この特徴によれば、管ユニットの管路部、分岐部のそれぞれは、開閉弁を基部フランジと連結フランジとの連結部に挿入して挿入部を閉塞して、仕切弁取付部に取り付けられた蓋部材を取り外すとともに、仕切弁を該仕切弁取付部に取り付けることによって、管路部及び分岐部のそれぞれに対し、不断流の状態で仕切弁を取り付けることができるので、不断流の状態で管路部を流れる流体を迂回するための分岐管を取付けることができる。また、長期間留置する際には、仕切弁及び開閉弁の双方の弁体を仕切弁手段によって取り外しておくことができる。 In order to solve the above-mentioned problem, the pipe unit of the present invention comprises:
A pipe unit for attaching a valve device in an uninterrupted flow state, comprising a pipe part through which a fluid flows and a branch part to which a branch pipe for bypassing the fluid flowing through the pipe part can be attached,
The pipe part has a base flange having an insertion part into which a gate valve for partitioning the pipe part can be inserted, and a gate valve mounting part to which a gate valve for partitioning the pipe part can be attached. A connecting flange connected to the base flange so that an open / close valve that opens and closes can be inserted; and
A lid member detachably attached to the gate valve mounting portion of the connection flange,
The branch part has a base flange having an insertion part into which a gate valve for partitioning the branch part can be inserted, and a gate valve mounting part to which a gate valve for partitioning the branch part can be attached, and is opened and closed to open and close the insertion part. A coupling flange connected to the base flange so that the valve can be inserted and moved;
A lid member detachably attached to the gate valve mounting portion of the connecting flange;
It is characterized in that it comprises.
According to this feature, each of the pipe portion and the branch portion of the pipe unit is attached to the gate valve mounting portion by inserting the on-off valve into the connecting portion between the base flange and the connecting flange, closing the insertion portion. By removing the lid member and attaching the gate valve to the gate valve mounting portion, the gate valve can be attached to the pipe portion and the branch portion in an uninterrupted state. A branch pipe for bypassing the fluid flowing through the passage can be attached . Moreover, when indwelling for a long time, the valve bodies of both the gate valve and the on-off valve can be removed by the gate valve means.

本発明の管ユニットに対する仕切弁の設置方法は、
前記管路部において、前記基部フランジと前記連結フランジとの連結部を密封し、前記連結フランジを移動させて前記連結部に前記開閉弁を挿入可能な間隙部を形成し、該間隙部に開閉弁を挿入するとともに、前記仕切弁取付部に取り付けられた前記蓋部材を取り外して、該仕切弁取付部に前記仕切弁を取り付けるとともに、
前記分岐部において、前記基部フランジと前記連結フランジとの連結部を密封し、前記連結フランジを移動させて前記連結部に前記開閉弁を挿入可能な間隙部を形成し、該間隙部に開閉弁を挿入するとともに、前記仕切弁取付部に取り付けられた前記蓋部材を取り外して、該仕切弁取付部に前記仕切弁を取り付けることを特徴としている。
この特徴によれば、管ユニットの管路部、分岐部のそれぞれは、開閉弁を基部フランジと連結フランジとの連結部に挿入して挿入部を閉塞して、仕切弁取付部に取り付けられた蓋部材を取り外すとともに、仕切弁を仕切弁取付部に取り付けることによって、管路部及び分岐部のそれぞれに対し、不断流の状態で仕切弁を取り付けることができるので、不断流の状態で管路部を流れる流体を迂回するための分岐管を取付けることができる。また、長期間留置する際には、仕切弁及び開閉弁の双方の弁体を仕切弁手段によって取り外しておくことができる。 The installation method of the gate valve for the pipe unit of the present invention is:
In the conduit portion, the connecting portion between the base flange and the connecting flange is sealed, and the connecting flange is moved to form a gap portion in which the on-off valve can be inserted into the connecting portion, and the gap portion is opened and closed. While inserting a valve, removing the lid member attached to the gate valve mounting portion, attaching the gate valve to the gate valve mounting portion,
In the branch portion, the connecting portion between the base flange and the connecting flange is sealed, and the connecting flange is moved to form a gap portion into which the on-off valve can be inserted into the connecting portion. Is inserted, the lid member attached to the gate valve mounting portion is removed, and the gate valve is attached to the gate valve mounting portion .
According to this feature, each of the pipe portion and the branch portion of the pipe unit is attached to the gate valve mounting portion by inserting the on-off valve into the connecting portion between the base flange and the connecting flange, closing the insertion portion. By removing the lid member and attaching the gate valve to the gate valve mounting portion, it is possible to attach the gate valve in an uninterrupted state to each of the pipe portion and the branch portion. A branch pipe for bypassing the fluid flowing through the section can be attached . Moreover, when indwelling for a long time, the valve bodies of both the gate valve and the on-off valve can be removed by the gate valve means.

実施例１における敷設状態の管ユニットを示す側断面図である。It is a sectional side view which shows the pipe unit of the laying state in Example 1. FIG. 密封部材が取り付けられた状態の管ユニットを示す側断面図である。It is a sectional side view showing a tube unit in the state where a sealing member was attached. 密封部材が取り付けられた状態の管ユニットを示す平面図である。It is a top view which shows the pipe unit of the state to which the sealing member was attached. 仕切弁箱部が取り付けられた状態の管ユニットを示す側断面図である。It is a sectional side view showing a pipe unit in the state where a gate valve box part was attached. 仕切弁を挿入した状態の管ユニットを示す側断面図である。It is side sectional drawing which shows the pipe unit of the state which inserted the gate valve. 図４における仕切弁取付装置を示す拡大側断面図である。It is an expanded sectional side view which shows the gate valve attachment apparatus in FIG. 実施例２における連結部を示す側断面図である。FIG. 6 is a side cross-sectional view showing a connecting part in Example 2. 実施例３における連結部を示す側断面図である。FIG. 10 is a side cross-sectional view showing a connecting portion in Example 3.

本発明に係る管ユニット及び管ユニットに対する仕切弁の設置方法を実施するための形態を実施例に基づいて以下に説明する。 EMBODIMENT OF THE INVENTION The form for implementing the pipe unit which concerns on this invention, and the installation method of the gate valve with respect to a pipe unit is demonstrated below based on an Example.

実施例１に係る管ユニット及び管ユニットに対する仕切弁の設置方法につき、図１から図６を参照して説明する。本実施例の管ユニット１は、例えば、地中に埋設される上水道用のダクタイル鋳鉄製であり、管路部は断面視略円形状に形成され、内周面がモルタル層で被覆されている。尚、本発明に係る管ユニット１は、その他鋳鉄、鋼等の金属製、あるいは石綿、コンクリート製、塩化ビニール、ポリエチレン若しくはポリオレフィン製等であってもよい。更に尚、管ユニット１の内周面はモルタル層に限らず、例えばエポキシ樹脂等により被覆されてもよく、若しくは適宜の材料を粉体塗装により管ユニット１の内周面に被覆してもよい。また、本実施例では管ユニット１内の流体は、本実施例の上水に限らず、例えば工業用水や農業用水、下水等の他、ガスやガスと液体との気液混合体であっても構わない。尚、図１から図６において紙面右側を管ユニット１の上流側として説明する。 A pipe unit according to the first embodiment and a method for installing a gate valve for the pipe unit will be described with reference to FIGS. 1 to 6. The pipe unit 1 of the present embodiment is made of, for example, ductile cast iron for waterworks buried in the ground, the pipe section is formed in a substantially circular shape in cross section, and the inner peripheral surface is covered with a mortar layer. . The pipe unit 1 according to the present invention may be made of other metals such as cast iron and steel, or made of asbestos, concrete, vinyl chloride, polyethylene, or polyolefin. Furthermore, the inner peripheral surface of the tube unit 1 is not limited to the mortar layer, and may be coated with, for example, an epoxy resin or the like, or an appropriate material may be coated on the inner peripheral surface of the tube unit 1 by powder coating. . Further, in the present embodiment, the fluid in the pipe unit 1 is not limited to the clean water of the present embodiment. For example, in addition to industrial water, agricultural water, sewage, etc., it is a gas-liquid mixture of gas or gas and liquid. It doesn't matter. 1 to 6, the right side of the drawing will be described as the upstream side of the tube unit 1.

図１に示すように、本実施例の管ユニット１は、上流側及び下流側の端部のいずれもが挿口部２，３となっている。そして、それぞれの挿口部２，３が地中に略水平方向に埋設される流体管路を構成する流体管４，５の受口部６，７に接続される。尚、管ユニット１の両端部の挿口部２，３が本発明における接続部となっている。また、本実施例における管ユニット１は、流体が流れる管路部８を有し、管路部８の周面には、水平方向に分岐された分岐部９が設けられている。更に、管ユニット１が敷設された状態では、分岐部９の開口が蓋部材１０により閉塞されている。 As shown in FIG. 1, in the tube unit 1 of this embodiment, both the upstream and downstream end portions are the insertion portions 2 and 3. And each insertion part 2 and 3 is connected to the receiving parts 6 and 7 of the fluid pipe | tubes 4 and 5 which comprise the fluid pipe line embed | buried under the ground substantially horizontally. In addition, the insertion parts 2 and 3 of the both ends of the pipe unit 1 are connection parts in the present invention. Further, the pipe unit 1 in this embodiment has a pipe line part 8 through which a fluid flows, and a branch part 9 branched in the horizontal direction is provided on the peripheral surface of the pipe line part 8. Furthermore, in the state where the pipe unit 1 is laid, the opening of the branch portion 9 is closed by the lid member 10.

尚、後述するように、本実施例の管ユニット１は、分岐部９に迂回用の分岐管（図示略）を取り付けて流体の迂回経路を確保することで、迂回経路にて流体を流し続けるとともに、管ユニット１の下流側の流体管４にて工事を行えるようになっており、不断流状態での施工に適した管ユニット１となっている。 In addition, as will be described later, the pipe unit 1 of the present embodiment keeps the fluid flowing through the bypass path by securing a bypass path of the fluid by attaching a bypass branch pipe (not shown) to the branch portion 9. At the same time, the construction can be performed by the fluid pipe 4 on the downstream side of the pipe unit 1, and the pipe unit 1 is suitable for construction in an uninterrupted flow state.

また、管路部８における分岐部９よりも若干下流側の部位には、本発明における仕切弁手段としての仕切弁取付装置１２が設けられている。尚、この仕切弁取付装置１２は、管路部８の上部側に設けられ、管路部８を仕切るための後述する仕切弁１３を収容した仕切弁箱部１４が着脱されるようになっている。更に、分岐部９の部位にも、仕切弁取付装置１２’が設けられている。尚、この仕切弁取付装置１２’は、分岐部９の上部側に設けられ、分岐部９を仕切るための後述する仕切弁１３を収容した仕切弁箱部１４が着脱されるようになっている。また、これら２つの仕切弁取付装置１２，１２’は、同様の構成となっているため、管路部８を仕切るため仕切弁取付装置１２を例にして以下に説明する。 Further, a gate valve attaching device 12 as gate valve means in the present invention is provided at a position slightly downstream of the branch portion 9 in the pipe line portion 8. In addition, this gate valve attaching device 12 is provided on the upper side of the pipe line portion 8, and a gate valve box portion 14 containing a gate valve 13 to be described later for partitioning the pipe line portion 8 is attached and detached. Yes. Furthermore, a gate valve mounting device 12 ′ is also provided at the site of the branch portion 9. In addition, this gate valve mounting apparatus 12 'is provided in the upper part side of the branch part 9, and the gate valve box part 14 which accommodated the gate valve 13 mentioned later for partitioning the branch part 9 is attached or detached. . Since these two gate valve mounting devices 12 and 12 ′ have the same configuration, the gate valve mounting device 12 will be described below as an example for partitioning the pipe portion 8.

図１に示すように、仕切弁取付装置１２は、管路部８の上面に一体的に形成された基部フランジ１５を有している。この基部フランジ１５には、後述する仕切弁１３を挿入可能な挿入部１６が形成されている。また、基部フランジ１５の上面には、基部フランジ１５の挿入部１６と連続する挿入部１７を有する連結フランジ１８がボルト等の螺合部材１９により連結されている。尚、挿入部１７は、連結フランジ１８の上面に設けられた仕切弁取付部２０に開口されている。これらの挿入部１６，１７は、管路部８の内部から仕切弁取付部２０まで垂直に延設されている。 As shown in FIG. 1, the gate valve mounting device 12 has a base flange 15 that is integrally formed on the upper surface of the pipe section 8. The base flange 15 is formed with an insertion portion 16 into which a later-described gate valve 13 can be inserted. Further, a connection flange 18 having an insertion portion 17 continuous with the insertion portion 16 of the base flange 15 is connected to the upper surface of the base flange 15 by a screwing member 19 such as a bolt. The insertion portion 17 is opened to a gate valve mounting portion 20 provided on the upper surface of the connecting flange 18. These insertion portions 16 and 17 extend vertically from the inside of the conduit portion 8 to the gate valve mounting portion 20.

また、基部フランジ１５及び連結フランジ１８の連結部２１には、螺合部材１９が取り付けられる鍔部２２，２３が形成されている。この鍔部２２，２３は、挿入部１６，１７に直交する面を有しており、後述するように、基部フランジ１５及び連結フランジ１８の鍔部２２，２３同士の間に、挿入部１６，１７を開閉する開閉弁２４を挿入可能な間隙部２５が形成できるようになっている（図２参照）。更に、挿入部１６，１７は、板状をなす弁体である仕切弁１３を挿入可能なように横長のスリット状の孔部として形成されている。また、後述する開閉弁２４も板状をなす弁体として形成されている（図４参照）。 In addition, the connecting portions 21 of the base flange 15 and the connecting flange 18 are formed with flange portions 22 and 23 to which the screwing member 19 is attached. The flange portions 22 and 23 have surfaces orthogonal to the insertion portions 16 and 17, and, as will be described later, between the flange portions 22 and 23 of the base flange 15 and the connecting flange 18, A gap portion 25 into which an on-off valve 24 for opening and closing 17 can be inserted can be formed (see FIG. 2). Furthermore, the insertion parts 16 and 17 are formed as horizontally long slit-shaped holes so that the gate valve 13 which is a plate-like valve body can be inserted. An on-off valve 24 described later is also formed as a plate-like valve body (see FIG. 4).

尚、連結フランジ１８における基部フランジ１５との連結部２１には、この連結部２１の密封状態を維持するためのシール部材２６が設けられている（図６参照）。また、管ユニット１が長期間設置される敷設状態では、挿入部１７を閉塞するための蓋部材２７が連結フランジ１８の上面の仕切弁取付部２０にボルト等の螺合部材２８を用いて取り付けられる。また、蓋部材２７には、この蓋部材２７と仕切弁取付部２０との間を密封するシール部材２９が設けられる。 In addition, the connection part 21 with the base flange 15 in the connection flange 18 is provided with a seal member 26 for maintaining the sealed state of the connection part 21 (see FIG. 6). Moreover, in the laying state in which the pipe unit 1 is installed for a long period of time, the lid member 27 for closing the insertion portion 17 is attached to the gate valve mounting portion 20 on the upper surface of the connecting flange 18 using a screwing member 28 such as a bolt. It is done. The lid member 27 is provided with a seal member 29 that seals between the lid member 27 and the gate valve mounting portion 20.

図２及び図３に示すように、不断流状態で工事を行う場合に、基部フランジ１５及び連結フランジ１８の連結部２１には、開閉弁２４を収容した開閉弁箱部３０を有して連結部２１を密封状に覆う密封部材３１が取り付けられる。この密封部材３１を連結部２１に取り付ける工程が本発明における密封工程を構成している。 As shown in FIGS. 2 and 3, when construction is performed in an uninterrupted flow state, the connecting portion 21 of the base flange 15 and the connecting flange 18 has an open / close valve box portion 30 containing an open / close valve 24 for connection. A sealing member 31 that covers the portion 21 in a sealing manner is attached. The process of attaching the sealing member 31 to the connecting portion 21 constitutes the sealing process in the present invention.

また、この密封部材３１は、基部フランジ１５及び連結フランジ１８の鍔部２２，２３の形状に対応して、平面視で略四角形状をなす２つに分割可能な枠部材３２，３３を有している。そして、この枠部材３２，３３が分割された状態で基部フランジ１５及び連結フランジ１８の鍔部２２，２３を覆い、大型ボルト等の螺合部材３４により互いの枠部材３２，３３が連結されるようになっている。また、２つに分割された枠部材３２，３３のうち、一方の枠部材３２に開閉弁２４を収容した開閉弁箱部３０が一体的に設けられている。 The sealing member 31 has frame members 32 and 33 that can be divided into two substantially square shapes in plan view corresponding to the shapes of the flange portions 22 and 23 of the base flange 15 and the connecting flange 18. ing. The frame members 32 and 33 are covered with the base flange 15 and the flanges 22 and 23 of the connection flange 18 in a state of being divided, and the frame members 32 and 33 are connected to each other by a screwing member 34 such as a large bolt. It is like that. Moreover, the open / close valve box part 30 which accommodated the open / close valve 24 in one frame member 32 is integrally provided among the frame members 32 and 33 divided | segmented into two.

尚、密封部材３１の内面には、この密封部材３１と基部フランジ１５及び連結フランジ１８の鍔部２２，２３との間を密封するためのシール部材３５，３６が設けられている（図６参照）。更に、この密封部材３１のシール部材３５，３６は、密封性を維持しつつ、連結フランジ１８の鍔部２３の上下方向の移動を許容できるようになっている。また、密封部材３１の内面には、基部フランジ１５の鍔部２２に係合される係合片３７が突設されており、密封部材３１が基部フランジ１５に対して相対移動不能に固定されるようになっている。 Seal members 35 and 36 are provided on the inner surface of the sealing member 31 for sealing between the sealing member 31 and the flanges 22 and 23 of the base flange 15 and the connecting flange 18 (see FIG. 6). ). Furthermore, the sealing members 35 and 36 of the sealing member 31 can permit the vertical movement of the flange portion 23 of the connecting flange 18 while maintaining the sealing performance. Further, an engagement piece 37 that is engaged with the flange portion 22 of the base flange 15 protrudes from the inner surface of the sealing member 31, and the sealing member 31 is fixed to the base flange 15 so as not to be relatively movable. It is like that.

更に、密封部材３１を取り付けた後に、基部フランジ１５と連結フランジ１８とを連結している螺合部材１９を１本づつ取り外し、この螺合部材１９が螺合されていた鍔部２２，２３の孔部３８，３９に栓部材４０，４１を螺合するとともに、基部フランジ１５及び連結フランジ１８の鍔部２２，２３に螺合された栓部材４０，４１同士を万力等の挟持治具４２により上下方向から挟み込むようにする。尚、鍔部２２，２３の孔部３８，３９の全てに挟持治具４２を取り付ける必要はなく、一部の孔部３８，３９については、栓部材４０，４１を螺合させた状態のままでよい。例えば、本実施例では、鍔部２２，２３の６箇所の孔部３８，３９のうち、四隅の孔部３８，３９に挟持治具４２を取り付けるようにしている（図３参照）。更に、栓部材４０，４１には、孔部３８，３９の密閉性を維持するためのシール部材が設けられている。 Further, after the sealing member 31 is attached, the screwing members 19 that connect the base flange 15 and the connecting flange 18 are removed one by one, and the flanges 22 and 23 to which the screwing members 19 are screwed are removed. The plug members 40, 41 are screwed into the holes 38, 39, and the plug members 40, 41 screwed into the flange portions 22, 23 of the base flange 15 and the connecting flange 18 are clamped jigs 42 such as a vise. To sandwich from above and below. In addition, it is not necessary to attach the clamping jig 42 to all of the hole portions 38 and 39 of the flange portions 22 and 23, and some of the hole portions 38 and 39 remain in a state where the plug members 40 and 41 are screwed together. It's okay. For example, in this embodiment, the clamping jig 42 is attached to the hole portions 38 and 39 at the four corners among the six hole portions 38 and 39 of the flange portions 22 and 23 (see FIG. 3). Further, the plug members 40 and 41 are provided with seal members for maintaining the sealing performance of the holes 38 and 39.

尚、本実施例における栓部材４０，４１が、基部フランジ１５と連結フランジ１８との間の離間距離を規定する規定部材を構成している。更に、本実施例における挟持治具４２が、基部フランジ１５側の栓部材４０と連結フランジ１８側の栓部材４１とを一体的に連結しつつ、両栓部材４０，４１の相対位置を調整できる調整手段を構成している。 In addition, the plug members 40 and 41 in the present embodiment constitute a defining member that defines the separation distance between the base flange 15 and the connecting flange 18. Furthermore, the clamping jig 42 in the present embodiment can adjust the relative positions of the plug members 40 and 41 while integrally connecting the plug member 40 on the base flange 15 side and the plug member 41 on the connection flange 18 side. Adjusting means is configured.

次に、挟持治具４２を操作して、連結フランジ１８側の栓部材４１を上方に移動させるとともに、連結フランジ１８を上方に移動させるようにし、基部フランジ１５及び連結フランジ１８の連結部２１に開閉弁２４を挿入可能な間隙部２５を形成する。この基部フランジ１５及び連結フランジ１８の連結部２１に間隙部２５を形成する工程が本発明における間隙形成工程を構成している。 Next, the clamping jig 42 is operated to move the plug member 41 on the connection flange 18 side upward, and to move the connection flange 18 upward, so that the base flange 15 and the connection portion 21 of the connection flange 18 are moved. A gap portion 25 into which the on-off valve 24 can be inserted is formed. The step of forming the gap portion 25 in the connecting portion 21 of the base flange 15 and the connecting flange 18 constitutes the gap forming step in the present invention.

次に、開閉弁２４を間隙部２５に挿入して挿入部１６，１７を開閉弁２４により閉塞する。この開閉弁２４を間隙部２５に挿入して挿入部１６，１７を開閉弁２４により閉塞する工程が本発明における開閉弁閉塞工程を構成している。尚、この状態では、開閉弁２４によって閉塞されることにより、連結フランジ１８の挿入部１７に流体の流入が阻止されるようになっている。また、この状態では、基部フランジ１５の挿入部１６まで管路部８の流体が流入される。尚、開閉弁２４を間隙部２５に挿入した後に、挟持治具４２を若干締め付けて、基部フランジ１５及び連結フランジ１８の鍔部２２，２３同士により開閉弁２４を挟み込むようにしてもよい。 Next, the opening / closing valve 24 is inserted into the gap portion 25, and the insertion portions 16, 17 are closed by the opening / closing valve 24. The step of inserting the opening / closing valve 24 into the gap 25 and closing the insertion portions 16, 17 with the opening / closing valve 24 constitutes the opening / closing valve closing step in the present invention. In this state, the fluid is blocked from flowing into the insertion portion 17 of the connecting flange 18 by being blocked by the on-off valve 24. In this state, the fluid in the conduit portion 8 flows into the insertion portion 16 of the base flange 15. In addition, after inserting the opening / closing valve 24 into the gap portion 25, the clamping jig 42 may be slightly tightened so that the opening / closing valve 24 is sandwiched between the flange portions 22, 23 of the base flange 15 and the connecting flange 18.

図４に示すように、連結フランジ１８の仕切弁取付部２０から蓋部材２７を取り外す。更に、連結フランジ１８の仕切弁取付部２０に、仕切弁１３を収容した仕切弁箱部１４をボルト等の螺合部材４３を用いて取り付ける。この連結フランジ１８の仕切弁取付部２０に、仕切弁１３を収容した仕切弁箱部１４を取り付ける工程が本発明における仕切弁取付工程を構成している。尚、仕切弁取付部２０と仕切弁箱部１４との間は、仕切弁箱部１４に設けられたシール部材４４により密封されている（図６参照）。 As shown in FIG. 4, the lid member 27 is removed from the gate valve mounting portion 20 of the connecting flange 18. Further, the gate valve box portion 14 containing the gate valve 13 is attached to the gate valve mounting portion 20 of the connecting flange 18 using a screwing member 43 such as a bolt. The process of attaching the gate valve box part 14 containing the gate valve 13 to the gate valve mounting part 20 of the connecting flange 18 constitutes the gate valve mounting process in the present invention. In addition, between the gate valve attaching part 20 and the gate valve box part 14 is sealed with the sealing member 44 provided in the gate valve box part 14 (refer FIG. 6).

そして、開閉弁２４を開閉弁箱部３０に収容して挿入部１６，１７を開放するとともに、挟持治具４２を操作して、連結フランジ１８側の栓部材４１を下方に移動させるとともに、連結フランジ１８を下方に移動させるようにし、基部フランジ１５及び連結フランジ１８の連結部２１に形成された間隙部２５を閉じて連結部２１を密封する。更に、基部フランジ１５及び連結フランジ１８の鍔部２２，２３に螺合された栓部材４０，４１及び挟持治具４２を１つずつ取り外し、基部フランジ１５と連結フランジ１８とを螺合部材１９により連結してゆく。 The opening / closing valve 24 is accommodated in the opening / closing valve box 30 to open the insertion portions 16 and 17, and the clamping jig 42 is operated to move the plug member 41 on the connection flange 18 side downward and to connect The flange 18 is moved downward, the gap 25 formed in the base flange 15 and the connecting portion 21 of the connecting flange 18 is closed, and the connecting portion 21 is sealed. Further, the plug members 40 and 41 and the clamping jig 42 screwed to the flange portions 22 and 23 of the base flange 15 and the connecting flange 18 are removed one by one, and the base flange 15 and the connecting flange 18 are connected by the screwing member 19. Connect.

尚、分岐部９の仕切弁取付装置１２’に対しても、前述した管路部８の仕切弁取付装置１２と同様の工程で密封部材３１及び仕切弁箱部１４を取り付けるようにする。そして、不断流状態で流体管５を流れる流体の迂回経路を確保する際には、分岐部９に取り付けた仕切弁箱部１４の仕切弁１３を下ろして分岐部９を閉塞した状態にし、分岐部９の開口を閉塞している蓋部材１０を取り外し、この分岐部９に迂回用の分岐管（図示略）を取り付けるようにする。 Note that the sealing member 31 and the gate valve box portion 14 are also attached to the gate valve mounting device 12 ′ of the branch portion 9 in the same process as the gate valve mounting device 12 of the pipe section 8 described above. And when securing the detour route of the fluid flowing through the fluid pipe 5 in the uninterrupted flow state, the gate valve 13 of the gate valve box portion 14 attached to the branch portion 9 is lowered to close the branch portion 9, The lid member 10 closing the opening of the section 9 is removed, and a bypass branch pipe (not shown) is attached to the branch section 9.

そして、図５に示すように、分岐部９の仕切弁１３を引き上げて分岐部９を開放し、迂回用の分岐管（図示略）に流体を流すとともに、管路部８に取り付けた仕切弁箱部１４の仕切弁１３を下ろして管路部８を閉塞した状態にする。すると、不断流状態で管ユニット１の下流側の流体管４にて工事を行えるようになる。 Then, as shown in FIG. 5, the gate valve 13 of the branch portion 9 is pulled up to open the branch portion 9, and the fluid is allowed to flow through a bypass branch pipe (not shown), and the gate valve attached to the pipe line portion 8. The gate valve 13 of the box part 14 is lowered to close the pipe part 8. Then, construction can be performed in the fluid pipe 4 on the downstream side of the pipe unit 1 in an uninterrupted state.

また、不断流状態での工事が終了して管ユニット１が長期間設置される敷設状態に戻す際には、先ず管路部８の仕切弁１３を引き上げて仕切弁箱部１４に収容して管路部８を開放し、下流側の流体管４に流体が流れるようにした状態にする。次に、分岐部９の仕切弁１３を下ろして分岐部９を閉塞した状態にし、迂回用の分岐管（図示略）を取り外す。そして、分岐部９の開口を蓋部材１０により閉塞し、分岐部９の仕切弁１３を引き上げて仕切弁箱部１４に収容する（図４参照）。 Further, when the construction in the uninterrupted flow state is finished and the pipe unit 1 is returned to the laying state where it is installed for a long time, the gate valve 13 of the pipe portion 8 is first lifted and accommodated in the gate valve box portion 14. The pipe section 8 is opened, and the fluid flows into the downstream fluid pipe 4. Next, the gate valve 13 of the branch part 9 is lowered to close the branch part 9, and the bypass branch pipe (not shown) is removed. And the opening of the branch part 9 is obstruct | occluded with the cover member 10, the gate valve 13 of the branch part 9 is pulled up, and it accommodates in the gate valve box part 14 (refer FIG. 4).

また、基部フランジ１５と連結フランジ１８とを連結している螺合部材１９を１本づつ取り外し、この螺合部材１９が螺合されていた鍔部２２，２３の孔部３８，３９に栓部材４０，４１を螺合するとともに、基部フランジ１５及び連結フランジ１８の鍔部２２，２３に螺合された栓部材４０，４１同士を万力等の挟持治具４２により上下方向から挟み込むようにする。 Further, the screw members 19 connecting the base flange 15 and the connecting flange 18 are removed one by one, and the plug members are inserted into the holes 38 and 39 of the flange portions 22 and 23 into which the screw members 19 are screwed. 40 and 41 are screwed together, and the plug members 40 and 41 screwed into the flange portions 22 and 23 of the base flange 15 and the connecting flange 18 are sandwiched from above and below by a clamping jig 42 such as a vise. .

次に、挟持治具４２を操作して、連結フランジ１８側の栓部材４１を上方に移動させるとともに、連結フランジ１８を上方に移動させるようにし、基部フランジ１５及び連結フランジ１８の連結部２１に開閉弁２４を挿入可能な間隙部２５を形成する。 Next, the clamping jig 42 is operated to move the plug member 41 on the connection flange 18 side upward, and to move the connection flange 18 upward, so that the base flange 15 and the connection portion 21 of the connection flange 18 are moved. A gap portion 25 into which the on-off valve 24 can be inserted is formed.

次に、開閉弁２４を間隙部２５に挿入して挿入部１６，１７を開閉弁２４により閉塞するとともに、仕切弁箱部１４を連結フランジ１８の仕切弁取付部２０から取り外す。そして、連結フランジ１８の仕切弁取付部２０に蓋部材２７を取り付ける（図２及び図３参照）。また、開閉弁２４を開閉弁箱部３０に収容して挿入部１６，１７を開放する。更に、挟持治具４２を操作して、連結フランジ１８側の栓部材４１を下方に移動させるとともに、連結フランジ１８を下方に移動させるようにし、基部フランジ１５及び連結フランジ１８の連結部２１に形成された間隙部２５を閉じて連結部２１を密封する。 Next, the opening / closing valve 24 is inserted into the gap portion 25, the insertion portions 16, 17 are closed by the opening / closing valve 24, and the gate valve box portion 14 is removed from the gate valve mounting portion 20 of the connecting flange 18. And the cover member 27 is attached to the gate valve attaching part 20 of the connection flange 18 (refer FIG.2 and FIG.3). Further, the opening / closing valve 24 is accommodated in the opening / closing valve box 30 to open the insertion portions 16 and 17. Further, by operating the clamping jig 42, the plug member 41 on the connection flange 18 side is moved downward, and the connection flange 18 is moved downward to form the base flange 15 and the connection portion 21 of the connection flange 18. The formed gap portion 25 is closed to seal the connecting portion 21.

次に、基部フランジ１５及び連結フランジ１８の鍔部２２，２３に螺合された栓部材４０，４１及び挟持治具４２を１つずつ取り外し、基部フランジ１５と連結フランジ１８とを螺合部材１９により連結してゆく。そして、基部フランジ１５及び連結フランジ１８の連結部２１から密封部材３１を取り外す（図１参照）。尚、分岐部９の仕切弁取付装置１２’の仕切弁箱部１４及び密封部材３１も同様の工程により取り外すようにする。 Next, the plug members 40 and 41 and the clamping jig 42 screwed to the flange portions 22 and 23 of the base flange 15 and the connecting flange 18 are removed one by one, and the base flange 15 and the connecting flange 18 are connected to the screwing member 19. Will be linked together. And the sealing member 31 is removed from the connection part 21 of the base flange 15 and the connection flange 18 (refer FIG. 1). In addition, the gate valve box part 14 and the sealing member 31 of the gate valve attaching device 12 'of the branching part 9 are also removed by the same process.

以上のように、本実施例における管ユニット１では、不断流工事を行う際には、開閉弁２４を収容した開閉弁箱部３０を有する密封部材３１を基部フランジ１５と連結フランジ１８との連結部２１に取り付けた状態にして、この連結部２１に開閉弁２４を挿入可能な間隙部２５を形成し、この間隙部２５に開閉弁２４を挿入して挿入部１６，１７を閉塞し、仕切弁取付部２０に取り付けられた蓋部材２７を取り外すとともに、仕切弁１３を収容した仕切弁箱部１４を仕切弁取付部２０に取り付けることで、不断流の状態で仕切弁１３を取り付けることができる。また、長期間留置する際には、仕切弁１３及び開閉弁２４の双方の弁体を仕切弁取付装置１２によって取り外しておくことができる。 As described above, in the pipe unit 1 according to the present embodiment, the sealing member 31 having the opening / closing valve box portion 30 in which the opening / closing valve 24 is accommodated is connected to the base flange 15 and the connecting flange 18 when the uninterrupted flow work is performed. A gap portion 25 into which the opening / closing valve 24 can be inserted is formed in the connecting portion 21 in a state of being attached to the portion 21, and the insertion portions 16, 17 are closed by inserting the opening / closing valve 24 into the gap portion 25, While removing the lid member 27 attached to the valve mounting part 20 and attaching the gate valve box part 14 containing the gate valve 13 to the gate valve mounting part 20, the gate valve 13 can be attached in an uninterrupted state. . Moreover, when indwelling for a long period of time, the valve bodies of both the gate valve 13 and the on-off valve 24 can be removed by the gate valve mounting device 12.

また、基部フランジ１５及び連結フランジ１８が有する各挿入部１６，１７が連続して配置され、これらの挿入部１６，１７が仕切弁取付部２０に取り付けられた蓋部材２７により閉塞された状態で敷設されることで、基部フランジ１５及び連結フランジ１８という構造が簡素な２つのフランジ１５，１８と、このフランジ１５，１８が有する挿入部１６，１７を塞ぐ蓋部材２７が敷設された状態であるため、長期間留置する際に腐食による影響を受ける部材を無くすことができる。 In addition, the insertion portions 16 and 17 of the base flange 15 and the connecting flange 18 are continuously arranged, and the insertion portions 16 and 17 are closed by a lid member 27 attached to the gate valve attachment portion 20. By laying, two flanges 15 and 18 having a simple structure of the base flange 15 and the connecting flange 18 and a lid member 27 for closing the insertion portions 16 and 17 of the flanges 15 and 18 are laid. Therefore, it is possible to eliminate a member that is affected by corrosion when placed for a long period of time.

また、基部フランジ１５と連結フランジ１８とを連結する螺合部材１９が螺合される孔部３８，３９を利用して基部フランジ１５と連結フランジ１８との間の離間距離を規定する栓部材４０，４１の配置部位を確保し、両栓部材４０，４１の相対位置を挟持治具４２により調整することで、開閉弁２４を挿入可能な間隙部２５を形成できるようになり、かつ基部フランジ１５側の栓部材４０と連結フランジ１８側の栓部材４１とが一体的に連結されるため、流体圧により連結フランジ１８が不用意に外れる虞がなく、安全に不断流の状態での施工を行うことができる。 Further, the plug member 40 that defines the separation distance between the base flange 15 and the connecting flange 18 by using the holes 38 and 39 into which the screwing member 19 that connects the base flange 15 and the connecting flange 18 is screwed. , 41 is secured, and the relative position of both plug members 40, 41 is adjusted by the clamping jig 42, so that the gap portion 25 into which the on-off valve 24 can be inserted can be formed, and the base flange 15 Since the plug member 40 on the side and the plug member 41 on the connection flange 18 side are integrally connected, there is no risk of the connection flange 18 being inadvertently detached due to fluid pressure, and the construction is performed safely in an uninterrupted state. be able to.

また、管路部８の周面には、分岐部９が設けられることで、分岐部９に迂回用の分岐管（図示略）を取り付けて流体の迂回経路を確保し、仕切弁１３により管路部８を閉塞して不断流工事を行うことができる。 Further, the branch portion 9 is provided on the peripheral surface of the pipe portion 8, so that a bypass branch pipe (not shown) is attached to the branch portion 9 to secure a bypass route of the fluid. The road portion 8 can be closed to perform uninterrupted work.

また、管路部８の両端部に設けられて上流側及び下流側の各流体管４，５に接続される端部のいずれもが挿口部２，３して構成されることで、分岐部９に迂回用の分岐管（図示略）を取り付けて流体の迂回経路を確保するための管ユニット１として敷設する際に、管ユニット１の向きを変更するだけで、上流側及び下流側のいずれの管ユニット１としても対応させることができる。 Further, both end portions provided at both end portions of the conduit portion 8 and connected to the upstream and downstream fluid pipes 4 and 5 are configured as the insertion portions 2 and 3, thereby branching. When a branching pipe (not shown) for bypassing is attached to the section 9 and laid as a pipe unit 1 for securing a fluid bypassing path, the upstream and downstream sides of the pipe unit 1 can be changed by simply changing the direction of the pipe unit 1. Any pipe unit 1 can be used.

次に、実施例２に係る管ユニット及び管ユニットに対する仕切弁の設置方法につき、図７を参照して説明する。尚、前記実施例と同一構成で重複する説明を省略する。前記実施例１では、密封部材３１を取り付けた後に、基部フランジ１５と連結フランジ１８とを連結している螺合部材１９を１本づつ取り外し、この螺合部材１９が螺合されていた鍔部２２，２３の孔部３８，３９に栓部材４０，４１を螺合するようにしているが、全ての螺合部材１９を栓部材４０，４１と交換する必要はなく、開閉弁２４の挿入に影響を与えない部位の孔部３８，３９には、実施例２における螺合部材４５を用いるようにしてもよい。 Next, a pipe unit according to the second embodiment and a method for installing a gate valve for the pipe unit will be described with reference to FIG. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted. In the first embodiment, after the sealing member 31 is attached, the screwing members 19 that connect the base flange 15 and the connecting flange 18 are removed one by one, and the flange portion into which the screwing member 19 is screwed. The plug members 40 and 41 are screwed into the holes 38 and 39 of the holes 22 and 23. However, it is not necessary to replace all the screw members 19 with the plug members 40 and 41, and the insertion of the on-off valve 24 is not necessary. The screw members 45 according to the second embodiment may be used for the hole portions 38 and 39 in the portions that do not affect the holes.

図７に示すように、実施例２における螺合部材４５は、矩形ヘッド４６を有するボルト４７及びこのボルト４７に螺合されるナット４８により構成される。尚、矩形ヘッド４６及びナット４８は、基部フランジ１５と連結フランジ１８との間の離間距離を規定する規定部材を構成している。また、矩形ヘッド４６及びナット４８には、孔部３８，３９の密閉性を維持するためのシール部材４９，５０が設けられている。尚、螺合部材４５自体が本発明における調整手段を構成している。 As shown in FIG. 7, the screwing member 45 in the second embodiment includes a bolt 47 having a rectangular head 46 and a nut 48 screwed to the bolt 47. The rectangular head 46 and the nut 48 constitute a defining member that defines the separation distance between the base flange 15 and the connecting flange 18. Further, the rectangular head 46 and the nut 48 are provided with seal members 49 and 50 for maintaining the sealing of the holes 38 and 39. Note that the screwing member 45 itself constitutes the adjusting means in the present invention.

尚、この実施例２における螺合部材４５は、前述した実施例１の挟持治具４２とともに用いるようになっており、挟持治具４２を操作して、連結フランジ１８を上方に移動させるとともに、螺合部材４５を緩めて矩形ヘッド４６及びナット４８の間の距離を広げるようにする。すると、基部フランジ１５及び連結フランジ１８の連結部２１の密封性を保ちながら、開閉弁２４を挿入可能な間隙部２５を形成することができる。 In addition, the screwing member 45 in the second embodiment is used together with the clamping jig 42 of the first embodiment described above, and operates the clamping jig 42 to move the connecting flange 18 upward, The screw 45 is loosened so that the distance between the rectangular head 46 and the nut 48 is increased. As a result, the gap portion 25 into which the on-off valve 24 can be inserted can be formed while maintaining the sealing performance of the connecting portion 21 of the base flange 15 and the connecting flange 18.

次に、実施例３に係る管ユニット及び管ユニットに対する仕切弁の設置方法につき、図８を参照して説明する。尚、前記実施例と同一構成で重複する説明を省略する。前記実施例１では、基部フランジ１５と連結フランジ１８との間の離間距離を規定する規定部材としての栓部材４０，４１と、両栓部材４０，４１の相対位置を調整できる調整手段としての挟持治具４２とが別部材として構成されているが、これら栓部材４０，４１及び挟持治具４２を一体的に形成してもよい。 Next, a pipe unit according to the third embodiment and a method for installing a gate valve for the pipe unit will be described with reference to FIG. In addition, the description which overlaps with the same structure as the said Example is abbreviate | omitted. In the first embodiment, the plug members 40 and 41 as the defining members that define the separation distance between the base flange 15 and the connecting flange 18, and the clamping as the adjusting means that can adjust the relative positions of the plug members 40 and 41. Although the jig 42 is configured as a separate member, the plug members 40 and 41 and the clamping jig 42 may be integrally formed.

図８に示すように、実施例３における挟持治具５１は、基部フランジ１５及び連結フランジ１８の鍔部２２，２３の孔部３８，３９を塞ぐ塞ぎ部５２，５３を有する上下２つの規定部材５４，５５を有している。また、塞ぎ部５２，５３には、孔部３８，３９の密閉性を維持するためのシール部材５６，５７が設けられている。尚、上下の規定部材５４，５５は、本発明における調整手段としてのネジ機構５８により連結されている。このネジ機構５８は、雄ネジが形成された棒状の部材となっており、下方側の規定部材５４に回転可能に取り付けられているとともに、上方側の規定部材５５に螺合されている。 As shown in FIG. 8, the clamping jig 51 according to the third embodiment includes two upper and lower defining members having blocking portions 52 and 53 that block the holes 38 and 39 of the flange portions 22 and 23 of the base flange 15 and the connecting flange 18. 54, 55. Further, seal members 56 and 57 for maintaining the sealing performance of the holes 38 and 39 are provided in the closing portions 52 and 53. The upper and lower defining members 54 and 55 are connected by a screw mechanism 58 as an adjusting means in the present invention. The screw mechanism 58 is a rod-like member in which a male screw is formed. The screw mechanism 58 is rotatably attached to the lower defining member 54 and is screwed to the upper defining member 55.

また、このネジ機構５８を回転操作することで、上方側の規定部材５５が上下に移動調整されるようになっている。更に、下方側の規定部材５４に固定されて垂直に延びる案内棒５９が設けられ、上方側の規定部材５５は、この案内棒５９に係合されており、上方側の規定部材５５が上下に移動する際に、案内棒５９により案内されるようになっている。このように、実施例３における挟持治具５１を基部フランジ１５及び連結フランジ１８の鍔部２２，２３の孔部３８，３９に取り付けるようにしてもよい。 Further, by rotating the screw mechanism 58, the upper side regulation member 55 is adjusted to move up and down. Further, a guide bar 59 fixed to the lower side definition member 54 and extending vertically is provided. The upper side regulation member 55 is engaged with the guide bar 59, and the upper side regulation member 55 is moved up and down. When moving, it is guided by the guide bar 59. As described above, the clamping jig 51 according to the third embodiment may be attached to the holes 38 and 39 of the flange portions 22 and 23 of the base flange 15 and the connecting flange 18.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。 Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

例えば、前記実施例１では、管ユニット１の上流側及び下流側の端部のいずれもが挿口部２，３となっているが、管ユニット１の上流側及び下流側の端部のいずれもが受口部若しくは切断により形成された切断端部（図示略）となっている構成であってもよい。尚、管ユニット１の上流側及び下流側の端部は、一方が挿口部で他方が受口部となっている構成であってもよいし、一方が切断端部で他方が挿口部若しくは受口部となっているような挿口部、受口部、切断端部を組み合わせた構成となってもよい。 For example, in the first embodiment, both the upstream and downstream ends of the tube unit 1 are the insertion portions 2 and 3, but either the upstream or downstream end of the tube unit 1 is used. The structure which becomes the cut end part (illustration omitted) formed by the mouth part or cutting | disconnection may be sufficient. The upstream and downstream ends of the tube unit 1 may be configured such that one is an insertion port and the other is a receiving port, or one is a cut end and the other is an insertion port. Or you may become the structure which combined the insertion part which becomes an opening part, an opening part, and a cutting | disconnection edge part.

また、前記実施例１では、管路部８側の仕切弁取付装置１２の基部フランジ１５が管路部８の上面に設けられるとともに、分岐部９側の仕切弁取付装置１２’の基部フランジ１５が分岐部９の上面に設けられる構成となっているが、基部フランジ１５が設けられる位置は、管路部８及び分岐部９の上面に限らず、管路部８及び分岐部９の側面や下面であってもよいし、管路部８及び分岐部９は、本実施例の構成に限られず、共に同一の面に設けられてもよいし、例えば、いずれか一方が上面に設けられ、他方が側面に設けられる構成であってもよい。 Moreover, in the said Example 1, while the base flange 15 of the gate valve attachment apparatus 12 by the side of the pipe line part 8 is provided in the upper surface of the pipe line part 8, the base flange 15 of gate valve attachment apparatus 12 'by the side of the branch part 9 is provided. However, the position where the base flange 15 is provided is not limited to the upper surface of the pipe line part 8 and the branch part 9, and the side face of the pipe part 8 and the branch part 9 The lower surface may be the pipe portion 8 and the branch portion 9 are not limited to the configuration of the present embodiment, both may be provided on the same surface, for example, either one is provided on the upper surface, The other may be provided on the side surface.

また、前記実施例１では、開閉弁２４が、垂直方向に延設された挿入部１６，１７に対し、水平方向から直角に挿入されるようになっているが、開閉弁２４の挿入方向は水平方向に限らず、挿入部１６，１７に対して若干斜め方向から挿入されるようにしてもよい。更に、挿入部１６，１７に対してその周囲のいずれの方向から開閉弁２４が挿入されてもよい。 In the first embodiment, the on-off valve 24 is inserted perpendicularly from the horizontal direction with respect to the insertion portions 16 and 17 extending in the vertical direction. Not only the horizontal direction but also the insertion portions 16 and 17 may be inserted slightly obliquely. Further, the opening / closing valve 24 may be inserted into the insertion portions 16 and 17 from any direction around the insertion portions 16 and 17.

１管ユニット
２，３挿口部（接続部）
４，５流体管
６，７受口部
８管路部
９分岐部
１２，１２’ 仕切弁取付装置（仕切弁手段）
１３仕切弁
１４仕切弁箱部
１５基部フランジ
１６，１７挿入部
１８連結フランジ
１９螺合部材
２０仕切弁取付部
２１連結部
２４開閉弁
２５間隙部
２７蓋部材
３０開閉弁箱部
３１密封部材
３８，３９孔部
４０，４１栓部材（規定部材）
４２挟持治具（調整手段）
４５螺合部材（調整手段）
４６矩形ヘッド（規定部材）
４８ナット（規定部材）
５１挟持治具
５４，５５規定部材 1 Tube unit 2, 3 Insertion part (connection part)
4, 5 Fluid pipes 6, 7 Receiving part 8 Pipe part 9 Branching parts 12, 12 'Gate valve mounting device (gate valve means)
13 Gate Valve 14 Gate Valve Box 15 Base Flange 16, 17 Inserting Port 18 Connecting Flange 19 Screwing Member 20 Gate Valve Mounting Portion 21 Connecting Portion 24 Opening / closing Valve 25 Gap 27 Cover Member 30 Opening / closing Valve Box 31 Sealing Member 38 39 Hole 40, 41 Plug member (regulating member)
42 Clamping jig (adjustment means)
45 Screwing member (adjustment means)
46 Rectangular head (regular member)
48 Nut (regulated member)
51 Clamping jigs 54 and 55

Claims

A pipe unit for attaching a valve device in an uninterrupted flow state, comprising a pipe part through which a fluid flows and a branch part to which a branch pipe for bypassing the fluid flowing through the pipe part can be attached,
The pipe part has a base flange having an insertion part into which a gate valve for partitioning the pipe part can be inserted, and a gate valve mounting part to which a gate valve for partitioning the pipe part can be attached. A connecting flange connected to the base flange so that an open / close valve that opens and closes can be inserted; and
A lid member detachably attached to the gate valve mounting portion of the connection flange,
The branch part has a base flange having an insertion part into which a gate valve for partitioning the branch part can be inserted, and a gate valve mounting part to which a gate valve for partitioning the branch part can be attached, and is opened and closed to open and close the insertion part. A coupling flange connected to the base flange so that the valve can be inserted and moved;
A lid member detachably attached to the gate valve mounting portion of the connecting flange;
Pipe unit, characterized in that it comprises a.

It is the installation method of the gate valve with respect to the pipe unit of Claim 1, Comprising:
In the conduit portion, the connecting portion between the base flange and the connecting flange is sealed, and the connecting flange is moved to form a gap portion in which the on-off valve can be inserted into the connecting portion, and the gap portion is opened and closed. While inserting a valve, removing the lid member attached to the gate valve mounting portion, attaching the gate valve to the gate valve mounting portion,
In the branch portion, the connecting portion between the base flange and the connecting flange is sealed, and the connecting flange is moved to form a gap portion into which the on-off valve can be inserted into the connecting portion. And installing the gate valve on the pipe unit , wherein the lid member attached to the gate valve mounting portion is removed and the gate valve is mounted to the gate valve mounting portion .