JP2006194344A - Water stop-free restrictor installing device - Google Patents

Water stop-free restrictor installing device Download PDF

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JP2006194344A
JP2006194344A JP2005006160A JP2005006160A JP2006194344A JP 2006194344 A JP2006194344 A JP 2006194344A JP 2005006160 A JP2005006160 A JP 2005006160A JP 2005006160 A JP2005006160 A JP 2005006160A JP 2006194344 A JP2006194344 A JP 2006194344A
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housing
casing
water control
installation
joint
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JP4494225B2 (en
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Minoru Sawada
実 澤田
Yusaku Ono
裕策 大野
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Cosmo Koki Co Ltd
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Cosmo Koki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-stop-free restrictor installing device for an existent fluid pipe for joining split casings to each other in a shorter time with less working labor and securing sealing function between a restrictor and the inner face of the casing. <P>SOLUTION: A packing 62 consists of an extension material 62a to be guided along the longitudinal direction by a guide part provided on at least part of a joint surface between the split casings and a plate material 62b extending from a predetermined position of the extension material 62a to the inner face of the casing. The end face of the plate material 62b is almost flush with the inner face of the casing during joining the split casings to each other. The end face of the plate material 62b abuts on the restrictor to function as a seal part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、既設流体管の外周面を分割筐体からなる筐体にて密封し、不断水状態で前記既設流体管を切断して、前記筐体内部に制水体を設置して、流路の遮断若しくは他の流路を形成する既設流体管の不断水制水体設置装置に関する。   The present invention seals the outer peripheral surface of an existing fluid pipe with a casing made of a split casing, cuts the existing fluid pipe in an indefinite water state, and installs a water control body inside the casing. The present invention relates to a continuous water control body installation device for an existing fluid pipe that forms an interruption or other flow path.

従来の不断水制水体設置装置は、分割筐体を溶接加工により接合した筐体にて既設流体管を密封し、不断水状態で既設流体管を切断して、筐体内部に制水体を設置して、流路の遮断若しくは他の流路を形成している(例えば、特許文献1参照)。   A conventional continuous water control body installation device seals an existing fluid pipe with a casing in which divided casings are joined by welding, cuts the existing fluid pipe in a continuous water state, and installs the water control body inside the casing. Thus, the flow path is blocked or another flow path is formed (see, for example, Patent Document 1).

特開平6−241380号公報(第2頁、第11図)JP-A-6-241380 (2nd page, FIG. 11)

しかしながら、特許文献1に記載の筐体の加工にあっては、現場作業による分割筐体の溶接加工は、作業手間が大きく、また、制水体と筐体内面とのシール機能確保のために、溶接加工後の分割筐体接合面には研磨加工等の作業を伴うため、作業時間が増大する等の問題があった。   However, in the processing of the housing described in Patent Document 1, welding work of the divided housing by field work is labor intensive, and in order to ensure the sealing function between the water control body and the inner surface of the housing, Since the divided casing joint surface after the welding is accompanied by a work such as a polishing process, there is a problem that the working time is increased.

本発明は、このような問題点に着目してなされたもので、分割筐体を作業手間や時間を軽減して接合し、かつ、制水体と筐体内面とのシール機能を確保する既設流体管の不断水制水体設置装置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 is an existing fluid that joins divided housings with reduced labor and time and secures a sealing function between the water control body and the inner surface of the housing. An object is to provide a continuous water control body installation device for pipes.

上記課題を解決するために、本発明の請求項1に記載の既設流体管の不断水制水体設置装置は、既設流体管の外周面を、少なくとも分割構造を有し、それぞれの接合面間にパッキンを介して接合される分割筐体からなる筐体で密封し、不断水状態で前記既設流体管を切断して、筐体内部に制水体を設置して、流路の遮断若しくは他の流路を形成する既設流体管の不断水制水体設置装置であって、前記パッキンが、前記分割筐体同士の接合面の少なくとも一部に設けられるガイド部により長手方向に沿ってガイドされる延材と、前記延材の所定位置から筐体内面に向けて延出している板材とからなり、前記分割筐体の接合時に前記板材の端面が前記筐体内面と略面一に形成され、前記板材の端面が前記制水体と当接してシール部として機能することを特徴としている。
この特徴によれば、パッキンが、分割筐体の接合面に設けられるガイド部により筐体の長手方向に沿ってガイドされる延材と、延材の所定位置から筐体内面に向けて延出している板材とからなるため、分割筐体同士が延材によりシールされ、筐体内に設置される制水体側面と筐体内面とは、端面が筐体内面と略面一に形成される板材によりシールされることになる。
In order to solve the above-mentioned problem, the continuous water control body installation device for an existing fluid pipe according to claim 1 of the present invention has at least a divided structure on the outer peripheral surface of the existing fluid pipe, and between the respective joining surfaces. Sealed with a casing consisting of divided casings joined via packing, cut the existing fluid pipe in an undisturbed water state, and installed a water control body inside the casing to block the flow path or other flow. A continuous water control body installation device for an existing fluid pipe that forms a path, wherein the packing is guided along a longitudinal direction by a guide portion provided on at least a part of a joint surface between the divided housings. And a plate material extending from a predetermined position of the extended material toward the inner surface of the housing, and an end surface of the plate material is formed substantially flush with the inner surface of the housing when the divided housing is joined, The end surface of the abuts against the water control body and functions as a seal It is characterized by a door.
According to this feature, the packing is guided along the longitudinal direction of the housing by the guide portion provided on the joint surface of the divided housing, and extends from a predetermined position of the extending material toward the inner surface of the housing. Therefore, the side surfaces of the water control body and the inner surface of the water control body installed in the housing are made of a plate material whose end surface is substantially flush with the inner surface of the housing. It will be sealed.

本発明の請求項2に記載の既設流体管の不断水制水体設置装置は、請求項1に記載の既設流体管の不断水制水体設置装置であって、前記筐体内面には、前記制水体と当接する当接面に沿って、前記筐体内側向きに肉厚の側面段部が形成され、前記板材の端面が前記側面段部の端面と略面一に形成されていることを特徴としている。
この特徴によれば、筐体内の水圧若しくは土圧などの影響を受けて筐体が変形等しようとするが、筐体内面の当接面に沿って肉厚の側面段部が形成されており、肉厚の側面段部がリブ材として機能し、筐体強度を増大させるために、筐体内面の当接面の変形等がなくシール性が維持される。
The continuous water control body installation device for an existing fluid pipe according to claim 2 of the present invention is the continuous water control body installation device for an existing fluid pipe according to claim 1, wherein A thick side stepped portion is formed inward of the housing along a contact surface that contacts the water body, and an end surface of the plate member is formed substantially flush with an end surface of the side stepped portion. It is said.
According to this feature, the housing tends to deform under the influence of water pressure or earth pressure in the housing, but a thick side step is formed along the contact surface of the housing inner surface. The thick side surface step functions as a rib member and increases the strength of the housing, so that the sealing property is maintained without deformation of the contact surface of the inner surface of the housing.

本発明の請求項3に記載の既設流体管の不断水制水体設置装置は、請求項1または2に記載の既設流体管の不断水制水体設置装置であって、前記延材と前記板材とが略同一の厚さを有しており、長手方向に沿って略同一の押圧力で前記分割筐体の接合面間に挟持されるようになっていることを特徴としている。
この特徴によれば、延材と板材とが略同一の厚さを有しており、長手方向に沿って略同一の押圧力で分割筐体の接合面間に挟持されるため、延材と板材とを挟み込んで分割筐体同士を締付ける際に、締付け圧力の調整が容易なため、分割筐体の接合工程が簡易となる。
The continuous fluid control body installation device for an existing fluid pipe according to claim 3 of the present invention is the continuous water control body installation device for an existing fluid pipe according to claim 1 or 2, wherein the extending material, the plate material, Have substantially the same thickness, and are sandwiched between the joint surfaces of the divided casings with substantially the same pressing force along the longitudinal direction.
According to this feature, the stretched material and the plate material have substantially the same thickness, and are sandwiched between the joint surfaces of the divided housings with substantially the same pressing force along the longitudinal direction. Since the clamping pressure can be easily adjusted when the divided casings are clamped together while sandwiching the plate material, the joining process of the divided casings is simplified.

本発明の請求項4に記載の既設流体管の不断水制水体設置装置は、請求項1ないし3のいずれかに記載の既設流体管の不断水制水体設置装置であって、前記ガイド部が、前記接合面の長手方向に沿って凸部材で構成され、少なくとも前記筐体の内面側に設けられた前記凸部材に、前記板材が前記筐体内面に向けて延出する所定位置において切欠き部が形成されていることを特徴としている。
この特徴によれば、分割筐体の接合面の長手方向に沿って凸部材が構成され、板材が筐体内面に向けて延出する所定位置に切欠き部が形成されているため、延材と板材とを配置する場合の位置決めが容易となり、分割筐体のスムーズな接合作業が可能となる。
The continuous water control body installation device for an existing fluid pipe according to claim 4 of the present invention is the continuous water control body installation device for an existing fluid pipe according to any one of claims 1 to 3, wherein the guide portion is The convex member is formed along the longitudinal direction of the joining surface, and is cut out at a predetermined position at least in the convex member provided on the inner surface side of the housing at the position where the plate material extends toward the inner surface of the housing. It is characterized in that a part is formed.
According to this feature, the projecting member is configured along the longitudinal direction of the joint surface of the divided housing, and the notch is formed at a predetermined position where the plate material extends toward the inner surface of the housing. Positioning when arranging the plate and the plate material is facilitated, and a smooth joining operation of the divided housings becomes possible.

本発明の請求項5に記載の既設流体管の不断水制水体設置装置は、請求項1ないし3のいずれかに記載の既設流体管の不断水制水体設置装置であって、前記ガイド部が、前記接合面の長手方向に沿って前記延材が嵌合可能な凹溝で構成され、前記筐体の内面側に設けられた前記凹溝の側壁部に、前記板材が前記筐体内面に向けて延出する所定位置において、間隙部が前記筐体内面に向けて形成されていることを特徴としている。
この特徴によれば、分割筐体の接合面の長手方向に沿って凹溝が構成され、筐体の内面側に設けられた凹溝の側壁部に、板材が筐体内面に向けて延出する所定位置において、間隙部が筐体内面に向けて形成されているため、延材と板材とを配置する場合の位置決めが容易となり、分割筐体のスムーズな接合作業が可能となる。
The continuous fluid control body installation device for an existing fluid pipe according to claim 5 of the present invention is the continuous water control body installation device for an existing fluid pipe according to any one of claims 1 to 3, wherein the guide portion is The groove material is configured by a groove that can be fitted along the longitudinal direction of the joint surface, and the plate member is formed on the inner surface of the housing on the side wall portion of the groove provided on the inner surface side of the housing. The gap portion is formed toward the inner surface of the housing at a predetermined position extending toward the front.
According to this feature, a concave groove is formed along the longitudinal direction of the joint surface of the divided casing, and the plate material extends toward the inner surface of the casing on the side wall portion of the concave groove provided on the inner surface side of the casing. Since the gap portion is formed toward the inner surface of the housing at the predetermined position, positioning in the case of arranging the stretched material and the plate material is facilitated, and a smooth joining operation of the divided housing is possible.

本発明の請求項6に記載の既設流体管の不断水制水体設置装置は、請求項5に記載の既設流体管の不断水制水体設置装置であって、前記凹溝が、前記接合面の長手方向に沿って形成される第1凹溝と、前記間隙部から前記筐体内面に向けて形成される第2凹溝とからなることを特徴としている。
この特徴によれば、板材の両側部が、第2凹溝の側壁により保持されるため、接合方向に押圧されて両側方に膨出することなく、板材の端面と筐体内面とを略面一に形成することが容易となる。
The continuous water control body installation device for an existing fluid pipe according to claim 6 of the present invention is the continuous water control body installation device for an existing fluid pipe according to claim 5, wherein the concave groove is formed on the joint surface. It consists of the 1st ditch | groove formed along a longitudinal direction, and the 2nd ditch | groove formed toward the said housing | casing inner surface from the said clearance gap.
According to this feature, since both side portions of the plate material are held by the side walls of the second concave groove, the end surface of the plate material and the inner surface of the housing are substantially surfaced without being pressed in the joining direction and bulging out on both sides. It becomes easy to form.

本発明の請求項7に記載の既設流体管の不断水制水体設置装置は、請求項1ないし6のいずれかに記載の既設流体管の不断水制水体設置装置であって、前記分割筐体の接合面間の接合は、前記分割筐体のフランジ同士のボルトを利用した締付け構造になっており、少なくとも一方の前記接合面には、前記筐体の長手方向に沿って、前記筐体外側近傍に所定高さのスペーサが固着されていることを特徴としている。
この特徴によれば、分割筐体同士のボルト締付けによる接合時に、接合面間が筐体の長手方向に沿って一定幅に保たれ、接合面間に配置したパッキンへの均等な押圧力を確保できる。
A non-permanent water control body installation device for an existing fluid pipe according to claim 7 of the present invention is the continuous water control body installation device for an existing fluid pipe according to any one of claims 1 to 6, wherein The joint surfaces of the split housings have a tightening structure using bolts between the flanges of the split housing, and at least one of the joint surfaces extends along the longitudinal direction of the housing. It is characterized in that a spacer having a predetermined height is fixed in the vicinity.
According to this feature, when joining the divided housings by bolt tightening, the space between the joint surfaces is kept constant along the longitudinal direction of the housing, ensuring an even pressing force to the packing disposed between the joint surfaces it can.

本発明の実施例を以下に説明する。   Examples of the present invention will be described below.

本発明の実施例を図面に基づいて説明すると、先ず図1は、本発明の第1実施形態における既設水道管1に制水体設置装置2を装着した配管の全体像を示す平面図である。(a)は、制水体設置装置2を既設水道管1に装着した状態及び管内流体の流下方向を示した平面図であり、(b)は、同じく既設水道管1を切断した状態を示した平面図であり、(c)は、同じく制水体設置装置2内部に設置されたバタフライ弁4(制水体)の開状態を示した平面図であり、(d)は、同じくバタフライ弁4の閉状態を示した平面図である。図2(a)は、本発明におけるバタフライ弁4の開状態を示す斜視図であり、(b)は筐体10の全体像を示す斜視図である。図3(a)は、筐体10内の縦断面図であり、(b)は同じくバタフライ弁4が設置された状態を示す縦断面図である。図4は、筐体10の側面図である。図5(a)は本発明の第1実施例における上部筐体11の接合面を見た平面図であり、(b)は下部筐体12の接合面を見た平面図である。図6は、上部筐体11と下部筐体12とを接合したA−A拡大断面図である。図7は、筐体10に備えられた側面段部15を示した縦断面図である。図8は、上部筐体11(図示略)と下部筐体12間にパッキン62が配設された状態を示す拡大斜視図である。図9(a)は、パッキン62平面図であり、(b)B−B断面図であり、(c)はC−C断面図である。図10(a)は本発明の第2実施例における上部筐体11’の接合面を見た平面図であり、(b)は下部筐体12’の接合面を見た平面図である。図11(a)は、上部筐体11’と下部筐体12’とを接合したD−D拡大断面図であり、(b)は、同じくE−E拡大断面図である。図12は、筐体10’に備えられた側面段部15’を示した縦断面図である。図13は、上部筐体11’(図示略)と下部筐体12’間にパッキン62が配設された状態を示す拡大斜視図である。   An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a plan view showing an overall image of a pipe in which a water control body installation device 2 is mounted on an existing water pipe 1 in a first embodiment of the present invention. (A) is the top view which showed the state which attached the water control body installation apparatus 2 to the existing water pipe 1, and the flow direction of the fluid in a pipe | tube, (b) showed the state which cut | disconnected the existing water pipe 1 similarly. It is a top view, (c) is a top view which showed the open state of the butterfly valve 4 (water control body) similarly installed in the water control body installation apparatus 2, (d) is also the closing of the butterfly valve 4 It is the top view which showed the state. FIG. 2A is a perspective view showing an open state of the butterfly valve 4 in the present invention, and FIG. 2B is a perspective view showing an entire image of the housing 10. 3A is a longitudinal sectional view inside the housing 10, and FIG. 3B is a longitudinal sectional view showing a state where the butterfly valve 4 is also installed. FIG. 4 is a side view of the housing 10. FIG. 5A is a plan view of the joining surface of the upper housing 11 in the first embodiment of the present invention, and FIG. 5B is a plan view of the joining surface of the lower housing 12. FIG. 6 is an AA enlarged sectional view in which the upper housing 11 and the lower housing 12 are joined. FIG. 7 is a vertical cross-sectional view showing the side step 15 provided in the housing 10. FIG. 8 is an enlarged perspective view showing a state in which the packing 62 is disposed between the upper housing 11 (not shown) and the lower housing 12. 9A is a plan view of the packing 62, FIG. 9B is a cross-sectional view taken along the line BB, and FIG. 9C is a cross-sectional view taken along the line CC. FIG. 10A is a plan view of the joining surface of the upper housing 11 ′ according to the second embodiment of the present invention, and FIG. 10B is a plan view of the joining surface of the lower housing 12 ′. FIG. 11A is a DD enlarged cross-sectional view in which the upper housing 11 ′ and the lower housing 12 ′ are joined, and FIG. 11B is also an EE enlarged cross-sectional view. FIG. 12 is a longitudinal sectional view showing a side step portion 15 ′ provided in the housing 10 ′. FIG. 13 is an enlarged perspective view showing a state in which the packing 62 is disposed between the upper casing 11 ′ (not shown) and the lower casing 12 ′.

本発明の第1実施形態おける制水体設置装置2について装着後の配管状況は、図1(a)に示すように、上水管である既設水道管1の管内流体の流下方向に対して、例えば既設水道管1の一部に撤去や補修が必要な特定エリアEよりも上流側の管部分に、本発明の第1実施形態における筐体10からなる制水体設置装置2を既設水道管1の外周面に水密的に装着し、筐体10内部の既設水道管1部分を切断(図1(b))して切断箇所にバタフライ弁4(制水体)を装着し、図1(c)、(d)に示すように、既設水道管1の既設流路を開閉可能とする構成を有している。   As shown in FIG. 1 (a), the piping situation after installation of the water control body installation device 2 in the first embodiment of the present invention is, for example, with respect to the flow direction of the fluid in the pipe of the existing water pipe 1, which is a water pipe. The water control body installation device 2 including the casing 10 according to the first embodiment of the present invention is attached to the pipe portion on the upstream side of the specific area E that needs to be removed or repaired to a part of the existing water pipe 1. Attached to the outer peripheral surface in a water-tight manner, the existing water pipe 1 inside the housing 10 is cut (FIG. 1 (b)), and the butterfly valve 4 (water control body) is attached to the cut portion, FIG. 1 (c), As shown to (d), it has the structure which can open and close the existing flow path of the existing water pipe 1. As shown in FIG.

このような制水体設置装置2の配設により、既設水道管1の特定エリアEには管内流体が流下しないように操作できるため、特定エリアEに位置する管部分の撤去やあるいは補修等の作業が可能となる。   The arrangement of the water control body installation device 2 allows operation so that the fluid in the pipe does not flow down to the specific area E of the existing water pipe 1, so that the work such as removal or repair of the pipe portion located in the specific area E can be performed. Is possible.

図2(b)に示すように、本発明の第1実施形態おける制水体設置装置2の外形は、既設水道管の流路を変更若しくは遮断する筐体10からなり、筐体10は上部筐体11と下部筐体12とからなる上下2部分に分割可能となっている。   As shown in FIG. 2B, the outer shape of the water control body installation device 2 in the first embodiment of the present invention is composed of a casing 10 that changes or blocks the flow path of the existing water pipe, and the casing 10 is an upper casing. It can be divided into two upper and lower parts composed of a body 11 and a lower housing 12.

筐体10は、既設水道管1の外径よりも大なる内径を有する筒状部10aと、筒状部10aと内部が連通して筒状部10aと略直交する水平筒状部10bとからなっており、筒状部10aには上面に上向きに開口した円形の上方開口部Uが形成され、水平筒状部10bの両端部にも水平方向に開口した円形の側方開口部A、A’が2箇所形成されている。   The casing 10 includes a cylindrical portion 10a having an inner diameter larger than the outer diameter of the existing water pipe 1, and a horizontal cylindrical portion 10b that communicates with the cylindrical portion 10a and is substantially orthogonal to the cylindrical portion 10a. The cylindrical portion 10a is formed with circular upper openings U that open upward on the upper surface, and circular side openings A and A that open horizontally at both ends of the horizontal cylindrical portion 10b. 'Is formed in two places.

図2(b)及び図3(a)に示すように、水平方向の同一の中心軸Cを有し、筐体10の側面において互いの対面に位置する側方開口部A及び側方開口部A’の内径は、既設水道管1の外径よりも略同一あるいは若干大きく形成されている。   As shown in FIG. 2B and FIG. 3A, the side opening A and the side opening that have the same central axis C in the horizontal direction and are located opposite to each other on the side surface of the housing 10. The inner diameter of A ′ is formed to be substantially the same or slightly larger than the outer diameter of the existing water pipe 1.

また、上部筐体11、下部筐体12の外側面及び筐体12の外底面には、補強用のリブ14が設けられており、筐体10側面下部には、筐体10の内部に設置されたバタフライ弁4の上流側には開閉可能な上流側口13aが設けられ、同様にバタフライ弁4の下流側には開閉可能な下流側口13bが設けられている。後述する既設水道管1の切断時においては、上流側口13a、下流側口13bは筐体10の外部と連通可能となっている。   Reinforcing ribs 14 are provided on the outer surface of the upper housing 11 and the lower housing 12 and on the outer bottom surface of the housing 12. An upstream port 13 a that can be opened and closed is provided on the upstream side of the butterfly valve 4. Similarly, a downstream port 13 b that can be opened and closed is provided on the downstream side of the butterfly valve 4. At the time of cutting the existing water pipe 1 described later, the upstream side port 13 a and the downstream side port 13 b can communicate with the outside of the housing 10.

制水体設置装置2の既設水道管1への装着について図2(b)で示して説明すると、上部筐体11と下部筐体12とを中心軸Cと既設水道管1の管軸とを合わせる位置で、既設水道管1の外周部に装着する。既設水道管1の外周部に装着した上部筐体11と下部筐体12との接合部は、それぞれフランジからなる接合面11a、12aが形成されており、図5及び図9を用いて後述するように、上部筐体11の接合面11aと、下部筐体12の接合面12aとの間にパッキン62を介したフランジ接合を行う。   The attachment of the water control body installation device 2 to the existing water pipe 1 will be described with reference to FIG. 2B. The upper casing 11 and the lower casing 12 are aligned with the central axis C and the pipe axis of the existing water pipe 1. At the position, it is attached to the outer periphery of the existing water pipe 1. The joint part of the upper housing | casing 11 and the lower housing | casing 12 with which the outer peripheral part of the existing water pipe 1 was mounted | worn is formed with the joint surfaces 11a and 12a which consist of a flange, respectively, and it mentions later using FIG.5 and FIG.9. As described above, flange joining is performed between the joint surface 11 a of the upper housing 11 and the joint surface 12 a of the lower housing 12 via the packing 62.

また、開口部A及び開口部A’において、水平筒状部10bの内周面と既設水道管1の外周面との間に周方向に亘ってゴム輪53を介して、水平筒状部10bの端部に形成されたフランジ17と略同一の内径を有する分割構造の押し輪50にてゴム輪53を水平筒状部10bの内部側に押し込むことにより、開口部A及びA’における筐体10と既設水道管1の外周面とのシールを行う。   Further, in the opening A and the opening A ′, the horizontal cylindrical portion 10b is interposed between the inner peripheral surface of the horizontal cylindrical portion 10b and the outer peripheral surface of the existing water pipe 1 through the rubber ring 53 in the circumferential direction. The rubber ring 53 is pushed into the inner side of the horizontal cylindrical portion 10b with the push ring 50 having a split structure having substantially the same inner diameter as that of the flange 17 formed at the end portion of the flange 17 so that the housings at the openings A and A 'are formed. 10 and the outer peripheral surface of the existing water pipe 1 are sealed.

したがって上部筐体11と下部筐体12との接合は、長手方向に亘ってパッキン62を介したフランジ接合であり、開口部A及び開口部A’の両端部には既設水道管1の外周方向に亘って配設したゴム輪53を介して押し輪50の押し込みにより、筐体10の内部は水密的となっている。   Therefore, the joining of the upper housing 11 and the lower housing 12 is a flange joining through the packing 62 over the longitudinal direction, and the outer peripheral direction of the existing water pipe 1 is provided at both ends of the opening A and the opening A ′. The inside of the housing 10 is watertight by the pushing of the push ring 50 through the rubber ring 53 disposed over the space.

次に既設水道管1の切断作業工程を説明すると、既設水道管1に筐体10を上述のように密封した状態にて、上方開口部Uに、上方開口部Uを開閉自在とする開閉弁(図示略)と、前記開閉弁を介して取り付けた筐体10と連通する作業筒(図示略)の内部に既設水道管1の切断装置(図示略)を配設して、筐体10内の既設水道管1を不断水状態で切り粉を排出しながら所定長さ切断する。次に、切断後の管片及び前記切断装置を筐体10外へ搬出する。   Next, the cutting operation process of the existing water pipe 1 will be described. In the state where the casing 10 is sealed to the existing water pipe 1 as described above, the open / close valve that allows the upper opening U to be opened and closed freely. (Not shown), and a cutting device (not shown) for the existing water pipe 1 is disposed inside a work cylinder (not shown) communicating with the case 10 attached via the on-off valve. The existing water pipe 1 is cut for a predetermined length while discharging chips in an undisrupted water state. Next, the cut piece and the cutting device are carried out of the housing 10.

次に、既設水道管1の管片及び切り粉を搬出した後において、前記作業筒(図示略)の内部にバタフライ弁4(制水体)の挿入装置(図示略)を配設して、前記開閉弁を開状態としてバタフライ弁4を筐体10内に設置する。   Next, after carrying out the pipe piece and chips of the existing water pipe 1, an insertion device (not shown) for inserting a butterfly valve 4 (water control body) is disposed inside the working cylinder (not shown), The butterfly valve 4 is installed in the housing 10 with the on-off valve opened.

ここで、図2(a)で示されるようにバタフライ弁4は、ほぼ中央部に開口Hを有する仕切壁6と、開閉軸40を中心に回動して開口Hを開閉可能である弁体7と、仕切壁6の上端部と一体的に連接される水平方向に備えられる円形の上蓋部5とからなり、弁体7の閉状態においては弁体7の全周縁がシール部材からなる弁座部42と密接するため、管内流体が開口Hを流通することが封止される。   Here, as shown in FIG. 2A, the butterfly valve 4 has a partition wall 6 having an opening H at a substantially central portion, and a valve body that can rotate around an opening / closing shaft 40 to open and close the opening H. 7 and a circular upper cover portion 5 provided in a horizontal direction integrally connected to the upper end portion of the partition wall 6, and in the closed state of the valve body 7, the valve body 7 has a valve member 7 whose entire periphery is a seal member. In order to be in close contact with the seat portion 42, the in-pipe fluid is sealed from flowing through the opening H.

また、図3(b)に示されるように、バタフライ弁4が筐体10内に設置された後の制水体設置装置2には、上蓋63と開閉軸回動機V1とが設けられ、弁体7の開閉動作が可能となっている。   Further, as shown in FIG. 3B, the water control body installation device 2 after the butterfly valve 4 is installed in the housing 10 is provided with an upper lid 63 and an opening / closing shaft rotating machine V1. 7 can be opened and closed.

上蓋部5の周面に設けられたシール材8aが、筐体10の内側面に設けられた段部19と水密的に圧接するように形成されている。同様に、仕切壁6の両側面に備えられたシール材81b及び底面に備えられたシール材82bとからなるシール材8bが、バタフライ弁4の設置位置において、図7に示されるように筐体10の内側面に設けられた側面段部15及び筐体10の底面の一部が膨出した底面段部16と水密的に圧接するように形成されている。   A sealing material 8 a provided on the peripheral surface of the upper lid portion 5 is formed so as to be in watertight pressure contact with a step portion 19 provided on the inner side surface of the housing 10. Similarly, the sealing material 8b composed of the sealing material 81b provided on both side surfaces of the partition wall 6 and the sealing material 82b provided on the bottom surface is provided at the installation position of the butterfly valve 4 as shown in FIG. 10 is formed so as to be in watertight pressure contact with a side surface step portion 15 provided on the inner side surface of 10 and a bottom surface step portion 16 in which a part of the bottom surface of the housing 10 bulges.

制水体設置装置2にバタフライ弁4を配設した時点において、既設水道管1の経路は図1(c)に示すようになり、既設水道管1内の流体は、制水体設置装置2においてバタフライ弁4の弁体7が閉状態では特定エリアEを流下しない状態となり、弁体7が開状態は特定エリアEを流下する状態となる。したがって、バタフライ弁4の弁体7を閉状態とすることにより、特定エリアEに位置する管部分の撤去やあるいは補修等の作業が可能となる。   When the butterfly valve 4 is disposed in the water control body installation device 2, the path of the existing water pipe 1 is as shown in FIG. 1 (c), and the fluid in the existing water pipe 1 passes through the butterfly in the water control body installation device 2. When the valve body 7 of the valve 4 is closed, the specific area E is not flowed down, and when the valve body 7 is open, the specific area E is flowed down. Therefore, by closing the valve body 7 of the butterfly valve 4, it is possible to remove or repair the pipe portion located in the specific area E.

次に、制水体設置装置2の各部について、詳細に説明する。   Next, each part of the water control body installation apparatus 2 is demonstrated in detail.

図5(a)、(b)に示されるように、筐体10は上部筐体11と下部筐体12とからなり、上部筐体11と下部筐体12の接合面はそれぞれ略同一形状の接合面11a、12aが形成され、接合面11a、12a間に図9(a)で示されるパッキン62を介して接合可能となっている。それぞれの接合面11a、12aの筐体10外側には長手方向に沿って所定間隔おきにボルト孔11b、12bが形成されており、図2(b)で示されるように、接合面が付き合わされた筐体10はボルトナット54により接合可能となっている。   As shown in FIGS. 5A and 5B, the housing 10 includes an upper housing 11 and a lower housing 12, and the joint surfaces of the upper housing 11 and the lower housing 12 have substantially the same shape. Bonding surfaces 11a and 12a are formed, and bonding is possible between the bonding surfaces 11a and 12a via the packing 62 shown in FIG. Bolt holes 11b and 12b are formed at predetermined intervals along the longitudinal direction on the outer side of the casing 10 of the respective joint surfaces 11a and 12a, and the joint surfaces are attached to each other as shown in FIG. The casing 10 can be joined by bolts and nuts 54.

図5(b)に示されるように、下部筐体12の接合面12a上面には、下部筐体12の内外両側に凸部材55、56が長手方向の形状に亘って配設され、凸部材55、56間に図9(a)に示されるパッキン62が配置されるようになっている。   As shown in FIG. 5B, convex members 55 and 56 are arranged on the upper surface of the joint surface 12 a of the lower housing 12 on both the inner and outer sides of the lower housing 12 over the shape in the longitudinal direction. A packing 62 shown in FIG. 9A is arranged between 55 and 56.

また、図9(a)に示される本実施例のパッキン62はゴム材からなり、図9(c)に示されるように、下部筐体12の接合面形状に沿って予め中間部が円弧状に形成されて断面が略円形状に形成される筐体用パッキン62a(延材)と、筐体用パッキン62aの中央部から延出されて断面が角形状に形成される制水体用パッキン62b(板材)と、同様に図9(b)に示されるように、筐体用パッキン62aの両端部から延出されて断面が角状に形成されるゴム輪用パッキン62cとからなる。   Further, the packing 62 of this embodiment shown in FIG. 9 (a) is made of a rubber material, and as shown in FIG. 9 (c), the intermediate portion has an arc shape in advance along the joining surface shape of the lower housing 12. The casing packing 62a (extending material) formed in a substantially circular shape in cross section and the water control body packing 62b extending out from the center of the casing packing 62a and formed in a square shape in cross section Similarly, as shown in FIG. 9 (b), the rubber plate packing 62c extends from both ends of the casing packing 62a and has a square cross section.

また、下部筐体12の内側に設けられる凸部材56は、図8に示されるように筒状部中央位置に切欠き部56aと、下部筐体12の両端部に切欠き部56bとが形成される。   Further, as shown in FIG. 8, the convex member 56 provided on the inner side of the lower housing 12 is formed with a notch portion 56 a at the center of the cylindrical portion and notch portions 56 b at both ends of the lower housing 12. Is done.

したがって、パッキン62の筐体用パッキン62aと制水体用パッキン62bとを配置する場合の位置決めが容易となり、上部筐体11と下部筐体12のスムーズな接合作業が可能となる。   Therefore, positioning in the case of arranging the casing packing 62a and the water control body packing 62b of the packing 62 is facilitated, and a smooth joining operation of the upper casing 11 and the lower casing 12 becomes possible.

また、上部筐体11と下部筐体12とが長手方向に沿ってパッキン62の筐体用パッキン62aによりシールされ、筐体10内に設置されるバタフライ弁4の側面と筐体10の内面とは、後述するように端面が筐体内面と略面一に形成される制水体用パッキン62bによりシールされることになる。   Further, the upper casing 11 and the lower casing 12 are sealed along the longitudinal direction by the casing packing 62 a of the packing 62, and the side surface of the butterfly valve 4 installed in the casing 10 and the inner surface of the casing 10 are As will be described later, the end surface is sealed by a water control body packing 62b formed substantially flush with the inner surface of the housing.

図9(b)、(c)で示されるように、パッキン62の筐体用パッキン62aと制水体用パッキン62bとは、長手方向に亘って略同一の厚さを有しており、上部筐体11の接合面11aと下部筐体12の接合面12aとが接合されると、筐体用パッキン62aと制水体用パッキン62bとが長手方向に沿って略同一の押圧力により接合面11a、12a間に挟持されるため、筐体用パッキン62aと制水体用パッキン62bとを挟み込んで上部筐体11と下部筐体12とを締め付ける際に、締付け圧力の調整が容易なため、上部筐体11と下部筐体12との接合工程が簡易となる。   As shown in FIGS. 9B and 9C, the casing packing 62a and the water control body packing 62b of the packing 62 have substantially the same thickness in the longitudinal direction. When the joining surface 11a of the body 11 and the joining surface 12a of the lower housing 12 are joined, the housing packing 62a and the water control body packing 62b are joined along the longitudinal direction by substantially the same pressing force, 12a is sandwiched between the casing packing 62a and the water control body packing 62b, and when the upper casing 11 and the lower casing 12 are clamped, it is easy to adjust the tightening pressure. The joining process of 11 and the lower housing | casing 12 becomes easy.

また、図5(b)に示されるように、下部筐体12の接合面12a上面には、長手方向に沿って所定間隔おきに下部筐体12外側近傍に凸部材55、56と略同一高さのスペーサ57が固着されており、上部筐体11と下部筐体12とをボルトナット54にて接合する際に、上部筐体11の接合面11aと下部筐体12の接合面12aとの間が筐体の長手方向に沿って一定幅に保たれ、接合面11a、12a間に配置したパッキン62への均等な押圧力を確保できる。   Further, as shown in FIG. 5B, the upper surface of the joint surface 12a of the lower housing 12 has substantially the same height as the convex members 55 and 56 near the outside of the lower housing 12 at predetermined intervals along the longitudinal direction. The spacer 57 is fixed, and when the upper housing 11 and the lower housing 12 are joined by the bolt nut 54, the joining surface 11a of the upper housing 11 and the joining surface 12a of the lower housing 12 are connected. The gap is kept constant along the longitudinal direction of the housing, and an equal pressing force to the packing 62 disposed between the joining surfaces 11a and 12a can be secured.

また、図3(a)に示されるように、筐体10には、外側面から既設水道管1の管軸方向に向かって外周壁を押圧保持する調整ボルト61が、既設水道管1の外周方向に所定間隔に配設されており、各調整ボルト61を外側面から螺挿して既設水道管1の外周壁を押圧することで、既設水道管1の管軸と、筐体10の水平筒状部10bの管軸Cとの調整が可能となる。   Further, as shown in FIG. 3A, the housing 10 has an adjustment bolt 61 that presses and holds the outer peripheral wall from the outer surface toward the pipe axis direction of the existing water pipe 1. The adjustment bolts 61 are screwed in from the outer surface and pressed against the outer peripheral wall of the existing water pipe 1 so that the tube axis of the existing water pipe 1 and the horizontal cylinder of the housing 10 are arranged. Adjustment with the tube axis | shaft C of the shape part 10b is attained.

また、図3(a)に示されるように、水平筒状部10bの外端部近傍の内周面は、外端部から内方に向けてテーパ状に縮径されるテーパ部10cと、さらに内方に形成される拡径部10dとからなる形状に周方向に亘って形成されている。   Further, as shown in FIG. 3A, the inner peripheral surface in the vicinity of the outer end portion of the horizontal cylindrical portion 10b has a tapered portion 10c whose diameter is reduced from the outer end portion toward the inside, and a tapered portion 10c. Furthermore, it is formed in the shape which consists of the enlarged diameter part 10d formed inward over the circumferential direction.

また、図9(a)に示されるように、パッキン62のゴム輪用パッキン62c端面は、水平筒状部10b内周面のテーパ部10cと拡径部10dの形状に対応した形状に形成されており、パッキンを介して上部筐体と下部筐体とを接合した状態にて、水平筒状部10bの内周面は周方向に亘って略面一に形成される。   Further, as shown in FIG. 9A, the end face of the rubber ring packing 62c of the packing 62 is formed in a shape corresponding to the shape of the tapered portion 10c and the enlarged diameter portion 10d of the inner peripheral surface of the horizontal cylindrical portion 10b. In the state where the upper housing and the lower housing are joined via the packing, the inner peripheral surface of the horizontal cylindrical portion 10b is formed substantially flush with the circumferential direction.

また、図2(b)、図3(a)に示されるように、ゴム輪53は、既設水道管1の外径と略同一の内径を有する環状に形成されて、既設水道管1の外周に配設される。またゴム輪53の外周面形状は、水平筒状部10b端部内周面に形成されるテーパ部10c形状及び拡径部10d形状に密接するように、若干大型化された略相似形状で周方向に亘って形成されている。   Further, as shown in FIGS. 2 (b) and 3 (a), the rubber ring 53 is formed in an annular shape having an inner diameter substantially the same as the outer diameter of the existing water pipe 1, and the outer periphery of the existing water pipe 1. It is arranged. Moreover, the outer peripheral surface shape of the rubber ring 53 is a substantially similar shape that is slightly enlarged so as to be in close contact with the tapered portion 10c shape and the enlarged diameter portion 10d shape that are formed on the inner peripheral surface of the end portion of the horizontal cylindrical portion 10b. It is formed over.

また、水平筒状部10bの両端部それぞれには、既設水道管1の外周方向にフランジ17、17が形成され、フランジ17面には所定間隔で管軸方向にボルト孔17aが設けられている。   Moreover, flanges 17 and 17 are formed in the both ends of the horizontal cylindrical part 10b in the outer peripheral direction of the existing water pipe 1, and bolt holes 17a are provided in the pipe axis direction at predetermined intervals on the flange 17 surface. .

2分割構造を有する押し輪50は、フランジ17の外径と略同一の外径を有する環状に形成され、フランジ17に形成されるボルト孔17aと対向する位置に同様のボルト孔50aが設けられている。   The push ring 50 having a two-part structure is formed in an annular shape having an outer diameter substantially the same as the outer diameter of the flange 17, and a similar bolt hole 50 a is provided at a position facing the bolt hole 17 a formed in the flange 17. ing.

また押し輪50の周面には、管軸中心に向かって形成される押し込みボルト52が、押し輪50の周方向に所定間隔で放射状に設けられており、押し込みボルト52の先方には、先端爪が既設水道管1の外周面と当接する押し爪64が備えられている。   Further, on the peripheral surface of the push ring 50, push bolts 52 formed toward the center of the tube axis are provided radially at predetermined intervals in the circumferential direction of the push ring 50. A push claw 64 with which the claw comes into contact with the outer peripheral surface of the existing water pipe 1 is provided.

対向配置されたフランジ17のボルト孔17aと押し輪50のボルト孔50aとを介して係合されたボルトナット51を螺挿することにより、フランジ17の外端面と押し輪50の内端面とが近接されるに伴い、押し輪50の内側面に周方向に亘って形成されたつば部60により、ゴム輪53が水平筒状部10bの内方に押圧され、既設水道管1の外周面と、水平筒状部10bの外端部近傍の内周面との間を摺接しながら水平筒状部10bの内方へ進入する。   By screwing a bolt nut 51 engaged through the bolt hole 17a of the flange 17 and the bolt hole 50a of the push ring 50 that are disposed to face each other, the outer end face of the flange 17 and the inner end face of the push ring 50 are brought together. The rubber ring 53 is pressed inward of the horizontal tubular portion 10b by the flange portion 60 formed in the circumferential direction on the inner side surface of the push wheel 50 as it comes close to the outer peripheral surface of the existing water pipe 1. Then, it enters the inside of the horizontal tubular portion 10b while slidingly contacting the inner peripheral surface near the outer end of the horizontal tubular portion 10b.

そして図3(b)に示されるように、ゴム輪53の前部が、テーパ部10cの縮径された箇所を越えて内方へ進入し、略同一形状に形成された拡径部10dに周方向に亘って嵌合されると同時に、ゴム輪50の後部が、同様に略同一形状に形成されたテーパ部10cに嵌合され、筐体10内周面と既設水道管1外周面との間がゴム輪53により密封される。   Then, as shown in FIG. 3B, the front portion of the rubber ring 53 enters inwardly beyond the reduced diameter portion of the tapered portion 10c, and enters the enlarged diameter portion 10d formed in substantially the same shape. At the same time as being fitted over the circumferential direction, the rear part of the rubber ring 50 is fitted into a tapered part 10c, which is similarly formed in substantially the same shape, and the inner peripheral surface of the housing 10 and the outer peripheral surface of the existing water pipe 1 The space between the two is sealed by a rubber ring 53.

次に、押し輪50の周方向に亘って設けられた各押し込みボルト52を螺挿することにより、押し爪64の先端爪が既設水道管1の外周にくい込まれ、押し輪50が既設水道管1を拘止される。   Next, by screwing each push-in bolt 52 provided over the circumferential direction of the push ring 50, the tip claw of the push claw 64 is inserted into the outer circumference of the existing water pipe 1, and the push ring 50 is attached to the existing water pipe. 1 is detained.

バタフライ弁4の設置位置における制水体設置装置2において、図7で示すように、仕切壁6の底面との当接面が、肉厚の底面段部16に形成されているために、切断手段により既設水道管1を切断する際に、既設水道管1の切断面から発生して落下し、底面段部16の当接面に付着する切り粉が、既設水道管1の内部における流下水流等により、底面段部16の当接面から落下するようになるため、バタフライ弁4の設置の際において、仕切壁6の底面に備えられたシール材82bが、切り粉をはさみ込むことなく底面段部16に押圧され、シール性能を高めることができる。   In the water control body installation device 2 at the installation position of the butterfly valve 4, as shown in FIG. 7, the contact surface with the bottom surface of the partition wall 6 is formed on the thick bottom surface step portion 16. When cutting the existing water pipe 1 by cutting, the chips generated and dropped from the cut surface of the existing water pipe 1 and adhering to the abutting surface of the bottom stepped portion 16 may flow down in the existing water pipe 1. Therefore, when the butterfly valve 4 is installed, the sealing material 82b provided on the bottom surface of the partition wall 6 does not sandwich the cutting powder when the butterfly valve 4 is installed. It is pressed by the part 16 and a sealing performance can be improved.

また、底面段部16の上面の幅寸法が、シール材82bの幅寸法に対応するために必要なだけの狭い寸法に抑えられているために、底面段部16の上面に切り粉が付着しづらくなる。   Moreover, since the width dimension of the upper surface of the bottom surface step part 16 is suppressed to a narrow dimension necessary to correspond to the width dimension of the sealing material 82b, chips adhere to the upper surface of the bottom surface step part 16. It becomes difficult.

また、図7に示されるように、本実施例の筐体10内面には、バタフライ弁4と当接する当接面に沿って、その他の内側面よりも、若干内向き側に肉厚の側面段部15が形成されており、図6に示されるように、パッキン62を介して上部筐体11と下部筐体12とが接合された筐体10内面において、制水体用パッキン62bの端面が側面段部15の端面と略面一に形成されるようになっている。   Further, as shown in FIG. 7, the inner surface of the housing 10 of the present embodiment has a side surface slightly thicker inward than the other inner side surface along the contact surface that contacts the butterfly valve 4. As shown in FIG. 6, the end surface of the water control body packing 62 b is formed on the inner surface of the casing 10 where the upper casing 11 and the lower casing 12 are joined via the packing 62. It is formed so as to be substantially flush with the end surface of the side stepped portion 15.

したがって、筐体10内の水圧若しくは土圧などの影響を受けて筐体10が変形等しようとするが、肉厚の側面段部15として形成されている筐体10のバタフライ弁4側面との当接面が、リブ材として機能し筐体10強度を増大させるために、筐体10内面の当接面の変形等がなくシール性が維持される。   Accordingly, the casing 10 is subject to deformation or the like under the influence of water pressure or earth pressure in the casing 10, but the side surface of the butterfly valve 4 of the casing 10 that is formed as a thick side stepped portion 15. Since the contact surface functions as a rib member and increases the strength of the housing 10, there is no deformation of the contact surface on the inner surface of the housing 10 and the sealing performance is maintained.

また、幅広に形成される制水体用パッキン62bが、筐体10内面と略面一に形成されてバタフライ弁4側面と当接するため、バタフライ弁4側面において仕切壁6表裏間のシールが可能となる。   Further, since the water control body packing 62b formed to be wide is formed substantially flush with the inner surface of the housing 10 and abuts against the side face of the butterfly valve 4, the seal between the front and back of the partition wall 6 can be made on the side face of the butterfly valve 4. Become.

また、筐体10の内面を前記したシール材8bの当接面とするものと比べ、側面段部15の加工形成のみで、仕切壁6の両側面と当接する当接面を確保できるので、加工形成が簡便でありまた安価である。   In addition, as compared with the case where the inner surface of the housing 10 is used as the contact surface of the sealing material 8b described above, the contact surface that contacts the both side surfaces of the partition wall 6 can be secured only by processing and forming the side surface step portion 15. Process formation is simple and inexpensive.

また、図3(a)に示されるように、筐体10の内側面には、バタフライ弁4が設置された状態において、仕切壁6を表裏から挟む上下2箇所の位置に、案内片21が固着されている。案内片21が、仕切壁6の壁面と摺接しながらバタフライ弁4を案内するため、バタフライ弁4が上方から筐体10内の設置位置に向かって下降動作する際に生ずる仕切壁6の側面と側面段部15の当接面との当接位置のずれを防止でき、管内の水圧等の影響下においても、バタフライ弁4の設置作業が容易となる。   Further, as shown in FIG. 3A, guide pieces 21 are provided at two positions on the inner side surface of the housing 10 in the upper and lower positions sandwiching the partition wall 6 from the front and back in a state where the butterfly valve 4 is installed. It is fixed. Since the guide piece 21 guides the butterfly valve 4 in sliding contact with the wall surface of the partition wall 6, the side surface of the partition wall 6 generated when the butterfly valve 4 moves downward from the upper side toward the installation position in the housing 10, The displacement of the contact position with the contact surface of the side step portion 15 can be prevented, and the installation operation of the butterfly valve 4 is facilitated even under the influence of water pressure in the pipe.

バタフライ弁4を筐体10内部の所定位置に設置した状態が図3(b)に示されており、仕切壁6の上蓋部5の側周面に備えられたシール材8aと筐体10内側面に備えた段部19とが水密的に密接しており、また同様に仕切壁6の側周面に備えられたシール材8bと筐体10内側面及び内底面に備えた側面段部15、底面段部16とが水密的に密接しているため、弁体7の閉状態では、上流からの管内流体の流下は仕切壁6において遮断される。   A state in which the butterfly valve 4 is installed at a predetermined position inside the housing 10 is shown in FIG. 3B, and the sealing material 8 a provided on the side peripheral surface of the upper lid portion 5 of the partition wall 6 and the inside of the housing 10 The step portion 19 provided on the side surface is in close water-tight contact, and similarly, the sealing material 8b provided on the side peripheral surface of the partition wall 6 and the side step portion 15 provided on the inner side surface and the inner bottom surface of the housing 10. Since the bottom surface step portion 16 is in close water-tight manner, the flow of the in-pipe fluid from the upstream is blocked by the partition wall 6 when the valve body 7 is closed.

また、図2(b)に示されるように筐体10上部の外側面にから内面に向けて螺挿される固定プラグねじ23が、バタフライ弁4の設置位置における、上蓋部5の上面と当接する高さ位置に筐体10の平面視円周方向に略等間隔に6箇所配設されている。   Further, as shown in FIG. 2B, the fixed plug screw 23 screwed into the inner surface from the outer surface of the upper portion of the housing 10 contacts the upper surface of the upper lid portion 5 at the installation position of the butterfly valve 4. Six places are arranged at substantially equal intervals in the circumferential direction in the plan view of the housing 10 at the height position.

バタフライ弁4の設置位置において、固定プラグねじ23が筐体10の外側面から螺挿されることにより、固定プラグねじ23の先端部が、上蓋部5の上面を摺接しながら筐体10内部中心に向かって進入するため、バタフライ弁4を下方に押圧した状態での固定が可能となる。   At the installation position of the butterfly valve 4, the fixed plug screw 23 is screwed from the outer surface of the housing 10, so that the distal end portion of the fixed plug screw 23 is slidably contacted with the upper surface of the upper lid portion 5 and is centered inside the housing 10. Therefore, the butterfly valve 4 can be fixed in a state where the butterfly valve 4 is pressed downward.

したがって、仕切壁6の側面及び底面に備えたシール材8bが、均等に下方に荷重されるため、水密性を確保することができる。   Therefore, since the sealing material 8b provided on the side surface and the bottom surface of the partition wall 6 is evenly loaded downward, water tightness can be ensured.

また、図4、図5(b)に示されるように本実施例では、バタフライ弁4の設置後において上流側口13aと下流側口13bとの間が連通管43にて連通され、連通管43を開閉可能とする連通管開閉弁44と連通管開閉弁44を回動可能とする開閉弁回動機V2が配設される。連通管開閉弁44を開状態とすることにより、筐体10内に設置されたバタフライ弁4の弁体が閉状態でも、バタフライ弁4の上流側と下流側とが連通される。   As shown in FIGS. 4 and 5B, in this embodiment, after the butterfly valve 4 is installed, the upstream side port 13a and the downstream side port 13b are communicated with each other through a communication pipe 43. A communication pipe opening / closing valve 44 capable of opening / closing 43 and an opening / closing valve rotating machine V2 capable of rotating the communication pipe opening / closing valve 44 are provided. By opening the communication pipe opening / closing valve 44, the upstream side and the downstream side of the butterfly valve 4 are communicated even when the valve body of the butterfly valve 4 installed in the housing 10 is closed.

したがって、連通管開閉弁44を開状態とすることによりバタフライ弁4の上流側と下流側との圧力差が小さくなるため、前記開状態で弁体7の開閉動作を行っても、該開閉動作時に生じる瞬間的な水圧変動によるウオーターハンマー現象を抑止することが可能となり、バタフライ弁4にかかる負荷や損傷を防止できる。   Therefore, since the pressure difference between the upstream side and the downstream side of the butterfly valve 4 is reduced by opening the communication pipe opening / closing valve 44, the opening / closing operation is performed even when the valve body 7 is opened / closed in the opened state. It becomes possible to suppress the water hammer phenomenon due to momentary fluctuations in the water pressure, which can prevent the butterfly valve 4 from being loaded or damaged.

次に、本発明の第2実施形態について以下に示す。前述と重複する部分については説明を省略する。   Next, a second embodiment of the present invention will be described below. A description of the same parts as those described above is omitted.

図10ないし図13に示されるように、本発明の第2実施形態における制水体設置装置2’は、下部筐体12’の接合面には長手方向に沿ってパッキン62の筐体用パッキン62aが嵌合可能な第1凹溝65が形成され、下部筐体12’の内面側に設けられた第1凹溝65の間隙部65aに、制水体用パッキン62bが筐体10内面に向けて延出する所定位置において、第1凹溝65とつながる第2凹溝66が筐体10内面に向けて形成されている。   As shown in FIGS. 10 to 13, the water regulating body installation device 2 ′ in the second embodiment of the present invention has a casing packing 62 a of the packing 62 along the longitudinal direction on the joint surface of the lower casing 12 ′. Is formed, and the water control body packing 62b is directed toward the inner surface of the housing 10 in the gap 65a of the first groove 65 provided on the inner surface side of the lower housing 12 ′. A second groove 66 connected to the first groove 65 is formed toward the inner surface of the housing 10 at a predetermined position extending.

したがって、パッキン62の筐体用パッキン62aと制水体用パッキン62bとを配置する場合の位置決めが容易となり、上部筐体11’と下部筐体12’とのスムーズな接合作業が可能となる。また、図10(b)、図13に示されるように、第2凹溝66両側方に側壁部66aが形成されているため、上部筐体11’と下部筐体12’との接合時に制水体用パッキン62bが押圧されて両側方に膨出することなく、制水体用パッキン62bの端面と筐体10内面とを略面一に形成することが容易となるため、バタフライ弁4側面と筐体10内面とのシール機能が維持される。   Therefore, the positioning in the case where the casing packing 62a and the water control body packing 62b of the packing 62 are arranged is facilitated, and the upper casing 11 'and the lower casing 12' can be smoothly joined. Further, as shown in FIGS. 10B and 13, since the side wall portions 66a are formed on both sides of the second concave groove 66, the upper housing 11 ′ and the lower housing 12 ′ are restrained at the time of joining. The end face of the water control body packing 62b and the inner surface of the housing 10 can be easily formed substantially flush without the water body packing 62b being pressed and bulging out on both sides. The sealing function with the inner surface of the body 10 is maintained.

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、上記実施例では、筐体10内に設置する制水体として、バタフライ弁4が設置されていたが、制水体は既設流路の遮断若しくは切替を伴うものであれば必ずしもバタフライ弁4とは限られず、例えば弁体が仕切壁に対してスライド動可能なスルース弁でもよいし、また筐体内で既設流体管の流路を遮断する仕切体でもよい。   For example, in the above embodiment, the butterfly valve 4 is installed as a water control body installed in the housing 10. However, the water control body is not necessarily the butterfly valve 4 as long as the existing flow path is interrupted or switched. For example, the valve body may be a sluice valve that is slidable with respect to the partition wall, or may be a partition body that blocks the flow path of the existing fluid pipe in the housing.

また、上記実施例では、既設水道管1の管内流体は上水であるが、管内流体は下水でもよいし、ガスでもよい。   In the above embodiment, the pipe fluid of the existing water pipe 1 is clean water, but the pipe fluid may be sewage or gas.

パッキン62形状は、筐体用パッキン62aが予め分割筐体11、12の長手方向の形状に沿って曲線に形成されていなくともよく、直線状に形成されている筐体用パッキン62aを分割筐体11、12の長手方向の形状に沿って曲線に配置してもよい。   In the packing 62 shape, the casing packing 62a may not be formed in a curve along the shape of the divided casings 11 and 12 in the longitudinal direction in advance, and the casing packing 62a that is formed in a straight line is divided. You may arrange | position in the curve along the shape of the longitudinal direction of the bodies 11 and 12. FIG.

また、筐体用パッキン62a(延材)の断面形状は、略円形状に形成されていなくともよく、例えば楕円形状に形成されてもよいし、角形状に形成されてもよい。   Moreover, the cross-sectional shape of the casing packing 62a (stretched material) may not be formed in a substantially circular shape, and may be formed in, for example, an elliptical shape or a rectangular shape.

また、スペーサ57の形状、間隔、個数は本実施例に限られず、例えば下部筐体12の接合面12aの長手方向に亘って形成されていてもよいし、上部筐体11の接合面11aに形成されていてもよい。   In addition, the shape, interval, and number of the spacers 57 are not limited to the present embodiment. For example, the spacers 57 may be formed along the longitudinal direction of the joint surface 12 a of the lower housing 12, or may be formed on the joint surface 11 a of the upper housing 11. It may be formed.

また、スペーサ57の高さは本実施例に限られず、パッキン62の形状に応じて凸部材55、56の高さと略同一かあるいは若干低く形成されていてもよい。   Further, the height of the spacer 57 is not limited to the present embodiment, and may be formed substantially the same as or slightly lower than the height of the convex members 55 and 56 according to the shape of the packing 62.

筐体用パッキン62aの内外両側には凸部材55、56が、分割筐体11、12の接合面の長手方向に沿って形成されていれば、長手方向に亘って切れ目なく配設されていなくともよく、例えば所定間隔おきに切欠き部が形成されていてもよい   If the convex members 55 and 56 are formed on the inner and outer sides of the casing packing 62a along the longitudinal direction of the joint surface of the divided casings 11 and 12, they are not disposed in a continuous manner in the longitudinal direction. For example, notches may be formed at predetermined intervals.

筐体10は、分割構造であれば上下分割構造に限られず、例えば既設水道管1の長手方向に対して側方に分割する構造でもよいし、上下方向と側方向の分割が組み合わされた構造でもよい。また2分割に限られず3分割以上の分割構造でもよい。   The casing 10 is not limited to the vertically split structure as long as it is a split structure, and may be, for example, a structure that is split laterally with respect to the longitudinal direction of the existing water pipe 1, or a structure in which the vertical and side splits are combined. But you can. Moreover, it is not limited to two divisions, but may be a division structure of three or more divisions.

分割筐体11、12の接合方法は、パッキン62を介して接合すれば、ボルトナット54を利用したフランジ接合に限られず、バックルあるいはベルト等の器具により接合される方法であってもよい。   The joining method of the divided casings 11 and 12 is not limited to flange joining using the bolt and nut 54 as long as they are joined via the packing 62, and may be a method of joining with a device such as a buckle or a belt.

また、制水体設置装置2の内部における既設水道管1の切断手段は、不断水状態にて制水体を内部に設置可能とするものであればよい。   Moreover, the cutting | disconnection means of the existing water pipe 1 in the inside of the water control body installation apparatus 2 should just be what can install a water control body in an inside in a continuous water state.

また、上記実施例では、図3(a)に示されるように、筐体10の側面に側面段部15が形成されているが、シール性を維持できれば側面段部15が形成されていなくともよい。同様に、上記実施例では、筐体10の底面に底面段部16が形成されているが、シール性を維持できれば底面段部16が形成されていなくともよい。   Further, in the above embodiment, as shown in FIG. 3A, the side surface step 15 is formed on the side surface of the housing 10, but if the sealing property can be maintained, the side surface step portion 15 is not formed. Good. Similarly, in the above embodiment, the bottom surface step 16 is formed on the bottom surface of the housing 10, but the bottom surface step 16 may not be formed as long as the sealing property can be maintained.

また、上記第2実施例では、図13に示されるように、第1凹溝65の間隙部65aには、第1凹溝65とつながる第2凹溝66が筐体10内面に向けて形成されていたが、間隙部65aが筐体10内面に向けて形成されていれば、必ずしも側壁部66aを有する第2凹溝66が形成されていなくともよい。   Further, in the second embodiment, as shown in FIG. 13, the second concave groove 66 connected to the first concave groove 65 is formed in the gap 65 a of the first concave groove 65 toward the inner surface of the housing 10. However, if the gap portion 65a is formed toward the inner surface of the housing 10, the second concave groove 66 having the side wall portion 66a is not necessarily formed.

本発明の第1実施形態における既設水道管1に制水体設置装置2を装着した配管の全体像を示す平面図である。(a)は、制水体設置装置2を既設水道管1に装着した状態及び管内流体の流下方向を示した平面図であり、(b)は、同じく既設水道管1を切断した状態を示した平面図であり、(c)は、同じく制水体設置装置2内部に設置されたバタフライ弁4(制水体)の開状態を示した平面図であり、(d)は、同じくバタフライ弁4の閉状態を示した平面図である。It is a top view which shows the whole image of piping which attached the water control body installation apparatus 2 to the existing water pipe 1 in 1st Embodiment of this invention. (A) is the top view which showed the state which attached the water control body installation apparatus 2 to the existing water pipe 1, and the flow direction of the fluid in a pipe | tube, (b) showed the state which cut | disconnected the existing water pipe 1 similarly. It is a top view, (c) is a top view which showed the open state of the butterfly valve 4 (water control body) similarly installed in the water control body installation apparatus 2, (d) is also the closing of the butterfly valve 4 It is the top view which showed the state. (a)は、本発明におけるバタフライ弁4の開状態を示す斜視図であり、(b)は筐体10の全体像を示す斜視図である。(A) is a perspective view which shows the open state of the butterfly valve 4 in this invention, (b) is a perspective view which shows the whole image of the housing | casing 10. FIG. (a)は、筐体10内の縦断面図であり、(b)は同じくバタフライ弁4が設置された状態を示す縦断面図である。(A) is a longitudinal cross-sectional view in the housing | casing 10, (b) is a longitudinal cross-sectional view which shows the state in which the butterfly valve 4 was similarly installed. 筐体10の側面図である。3 is a side view of the housing 10. FIG. (a)は本発明の第1実施例における上部筐体11の接合面を見た平面図であり、(b)は下部筐体12の接合面を見た平面図である。(A) is the top view which looked at the joint surface of the upper housing | casing 11 in 1st Example of this invention, (b) is the top view which looked at the joint surface of the lower housing | casing 12. FIG. 上部筐体11と下部筐体12とを接合したA−A拡大断面図である。FIG. 3 is an AA enlarged cross-sectional view in which an upper housing 11 and a lower housing 12 are joined. 筐体10に備えられた側面段部15を示した縦断面図である。FIG. 3 is a longitudinal sectional view showing a side step 15 provided in the housing 10. 上部筐体11(図示略)と下部筐体12間にパッキン62が配設された状態を示す拡大斜視図である。3 is an enlarged perspective view showing a state in which a packing 62 is disposed between an upper housing 11 (not shown) and a lower housing 12. FIG. (a)は、パッキン62平面図であり、(b)B−B断面図であり、(c)はC−C断面図である。(A) is a packing 62 top view, (b) BB sectional drawing, (c) is CC sectional drawing. (a)は本発明の第2実施例における上部筐体11’の接合面を見た平面図であり、(b)は下部筐体12’の接合面を見た平面図である。(A) is the top view which looked at the joint surface of upper housing | casing 11 'in 2nd Example of this invention, (b) is the top view which looked at the joint surface of lower housing | casing 12'. (a)は、上部筐体11’と下部筐体12’とを接合したD−D拡大断面図であり、(b)は、同じくE−E拡大断面図である。(A) is DD expanded sectional drawing which joined upper housing | casing 11 'and lower housing | casing 12', (b) is EE expanded sectional drawing similarly. 筐体10’に備えられた側面段部15’を示した縦断面図である。It is the longitudinal cross-sectional view which showed the side surface step part 15 'with which housing | casing 10' was equipped. 上部筐体11’(図示略)と下部筐体12’間にパッキン62が配設された状態を示す拡大斜視図である。FIG. 6 is an enlarged perspective view showing a state in which a packing 62 is disposed between an upper housing 11 ′ (not shown) and a lower housing 12 ′.

符号の説明Explanation of symbols

1 既設水道管(既設流体管)
2 制水体設置装置
4 バタフライ弁(制水体)
6 仕切壁
7 弁体
81b シール材(仕切壁側面)
82b シール材(仕切壁底面)
10 筐体
11 上部筐体(分割筐体)
12 下部筐体(分割筐体)
11a、12a 接合面
15 側面段部
16 底面段部
50 押し輪
53 ゴム輪
55、56 凸部材
56a、56b 切欠き部
57 スペーサ
62 パッキン
62a 筐体用パッキン(延材)
62b 制水体用パッキン(板材)
62c ゴム輪用パッキン
65 第1凹溝
65a 間隙部
66 第2凹溝
1 Existing water pipe (existing fluid pipe)
2 Water control body installation device 4 Butterfly valve (water control body)
6 Partition wall 7 Valve body 81b Sealing material (partition wall side surface)
82b Sealing material (bottom of partition wall)
10 casing 11 upper casing (divided casing)
12 Lower housing (split housing)
11a, 12a Joint surface 15 Side step 16 Bottom step 50 Push ring 53 Rubber rings 55, 56 Convex members 56a, 56b Notch 57 Spacer 62 Packing 62a Housing packing (stretch)
62b Packing for water control body (plate material)
62c Rubber ring packing 65 First groove 65a Gap 66 Second groove

Claims (7)

既設流体管の外周面を、少なくとも分割構造を有し、それぞれの接合面間にパッキンを介して接合される分割筐体からなる筐体で密封し、不断水状態で前記既設流体管を切断して、筐体内部に制水体を設置して、流路の遮断若しくは他の流路を形成する既設流体管の不断水制水体設置装置であって、
前記パッキンが、前記分割筐体同士の接合面の少なくとも一部に設けられるガイド部により長手方向に沿ってガイドされる延材と、前記延材の所定位置から筐体内面に向けて延出している板材とからなり、前記分割筐体の接合時に前記板材の端面が前記筐体内面と略面一に形成され、前記板材の端面が前記制水体と当接してシール部として機能することを特徴とする既設流体管の不断水制水体設置装置。
The outer peripheral surface of the existing fluid pipe has at least a divided structure and is sealed with a casing made of a split casing joined between the respective joint faces via packing, and the existing fluid pipe is cut in an unrestricted water state. A water control body installation device for an existing fluid pipe that installs a water control body inside the housing and forms a flow path blocking or other flow path,
The packing extends along the longitudinal direction by a guide portion provided on at least a part of the joint surface between the divided housings, and extends from a predetermined position of the extending material toward the housing inner surface. The end surface of the plate material is formed substantially flush with the inner surface of the housing when the divided housings are joined, and the end surface of the plate material abuts on the water control body and functions as a seal portion. A continuous water control body installation device for an existing fluid pipe.
前記筐体内面には、前記制水体と当接する当接面に沿って、前記筐体内側向きに肉厚の側面段部が形成され、前記板材の端面が前記側面段部の端面と略面一に形成されている請求項1に記載の既設流体管の不断水制水体設置装置。   On the inner surface of the housing, a thick side surface step is formed inward of the housing along a contact surface that contacts the water control body, and an end surface of the plate member is substantially flush with an end surface of the side surface step portion. The continuous water control body installation device for an existing fluid pipe according to claim 1, which is formed as a single unit. 前記延材と前記板材とが略同一の厚さを有しており、長手方向に沿って略同一の押圧力で前記分割筐体の接合面間に挟持されるようになっている請求項1または2に記載の既設流体管の不断水制水体設置装置。   The said extending | stretching material and the said board | plate material have substantially the same thickness, and are clamped between the joint surfaces of the said division | segmentation housing | casing with the substantially the same pressing force along a longitudinal direction. Or the continuous water control body installation apparatus of the existing fluid pipe | tube of 2. 前記ガイド部が、前記接合面の長手方向に沿って凸部材で構成され、少なくとも前記筐体の内面側に設けられた前記凸部材に、前記板材が前記筐体内面に向けて延出する所定位置において切欠き部が形成されている請求項1ないし3のいずれかに記載の既設流体管の不断水制水体設置装置。   The guide portion is constituted by a convex member along the longitudinal direction of the joint surface, and at least the convex member provided on the inner surface side of the casing, the plate member extends toward the inner surface of the casing. The continuous water control body installation device for an existing fluid pipe according to any one of claims 1 to 3, wherein a notch is formed at the position. 前記ガイド部が、前記接合面の長手方向に沿って前記延材が嵌合可能な凹溝で構成され、前記筐体の内面側に設けられた前記凹溝の側壁部に、前記板材が前記筐体内面に向けて延出する所定位置において、間隙部が前記筐体内面に向けて形成されている請求項1ないし3のいずれかに記載の既設流体管の不断水制水体設置装置。   The guide portion is constituted by a concave groove in which the elongated member can be fitted along the longitudinal direction of the joint surface, and the plate member is provided on a side wall portion of the concave groove provided on the inner surface side of the housing. 4. The continuous water control body installation device for an existing fluid pipe according to any one of claims 1 to 3, wherein a gap portion is formed toward the inner surface of the housing at a predetermined position extending toward the inner surface of the housing. 前記凹溝が、前記接合面の長手方向に沿って形成される第1凹溝と、前記間隙部から前記筐体内面に向けて形成される第2凹溝とからなる請求項5に記載の既設流体管の不断水制水体設置装置。   The said recessed groove consists of the 1st recessed groove formed along the longitudinal direction of the said joint surface, and the 2nd recessed groove formed toward the said housing | casing inner surface from the said gap | interval part. A continuous water control body installation device for existing fluid pipes. 前記分割筐体の接合面間の接合は、前記分割筐体のフランジ同士のボルトを利用した締付け構造になっており、少なくとも一方の前記接合面には、前記筐体の長手方向に沿って、前記筐体外側近傍に所定高さのスペーサが固着されている請求項1ないし6のいずれかに記載の既設流体管の不断水制水体設置装置。
Joining between the joint surfaces of the split housing has a tightening structure using bolts between flanges of the split housing, and at least one of the joint surfaces along the longitudinal direction of the housing, 7. The continuous water control body installation device for an existing fluid pipe according to any one of claims 1 to 6, wherein a spacer having a predetermined height is fixed in the vicinity of the outside of the casing.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011075052A (en) * 2009-09-30 2011-04-14 Waterworks Technology Development Organization Co Ltd Valve device
JP2013210046A (en) * 2012-03-30 2013-10-10 Kurimoto Ltd Seal structure of valve box divided part
JP2016173133A (en) * 2015-03-17 2016-09-29 株式会社水道技術開発機構 Valve device
EP3527863A1 (en) 2018-02-19 2019-08-21 Waterworks Technology Development Organization Co., Ltd. Valve device
JP2019143681A (en) * 2018-02-19 2019-08-29 株式会社水道技術開発機構 Valve device and fixing method of inner valve casing
JP2019143682A (en) * 2018-02-19 2019-08-29 株式会社水道技術開発機構 Case device and mounting method of case device
US10612688B2 (en) 2015-04-09 2020-04-07 Waterworks Technology Development Organization Co., Ltd. Corrosion prevention apparatus and corrosion prevention method for cut faces of pipes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49126228U (en) * 1973-02-23 1974-10-29
JP2001140290A (en) * 1999-11-12 2001-05-22 Suido Gijutsu Kaihatsu Kiko:Kk Device for fitting valve for fluid transport pipe
JP2004245397A (en) * 2002-12-19 2004-09-02 Suiken:Kk Valve device and valve insertion construction method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49126228U (en) * 1973-02-23 1974-10-29
JP2001140290A (en) * 1999-11-12 2001-05-22 Suido Gijutsu Kaihatsu Kiko:Kk Device for fitting valve for fluid transport pipe
JP2004245397A (en) * 2002-12-19 2004-09-02 Suiken:Kk Valve device and valve insertion construction method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011075052A (en) * 2009-09-30 2011-04-14 Waterworks Technology Development Organization Co Ltd Valve device
JP2013210046A (en) * 2012-03-30 2013-10-10 Kurimoto Ltd Seal structure of valve box divided part
JP2016173133A (en) * 2015-03-17 2016-09-29 株式会社水道技術開発機構 Valve device
US10612688B2 (en) 2015-04-09 2020-04-07 Waterworks Technology Development Organization Co., Ltd. Corrosion prevention apparatus and corrosion prevention method for cut faces of pipes
EP3527863A1 (en) 2018-02-19 2019-08-21 Waterworks Technology Development Organization Co., Ltd. Valve device
JP2019143681A (en) * 2018-02-19 2019-08-29 株式会社水道技術開発機構 Valve device and fixing method of inner valve casing
JP2019143682A (en) * 2018-02-19 2019-08-29 株式会社水道技術開発機構 Case device and mounting method of case device
US10989313B2 (en) 2018-02-19 2021-04-27 Waterworks Technology Development Organization Co., Ltd. Valve device
JP6998591B2 (en) 2018-02-19 2022-01-18 株式会社水道技術開発機構 Housing device and mounting method of housing device
JP6999933B2 (en) 2018-02-19 2022-01-19 株式会社水道技術開発機構 How to fix the valve device and inner valve box

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