JP2017106477A - Leak prevention unit - Google Patents

Leak prevention unit Download PDF

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JP2017106477A
JP2017106477A JP2015238264A JP2015238264A JP2017106477A JP 2017106477 A JP2017106477 A JP 2017106477A JP 2015238264 A JP2015238264 A JP 2015238264A JP 2015238264 A JP2015238264 A JP 2015238264A JP 2017106477 A JP2017106477 A JP 2017106477A
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pipe
cover
semicircular arc
packing
pipe end
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JP6140257B1 (en
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潤 福山
Jun Fukuyama
潤 福山
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Higashio Mech Co Ltd
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Higashio Mech Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a leak prevention unit capable of performing leak countermeasure easily and rapidly when leakage of tight-sealed liquid occurs from a pipe connecting part or before its occurrence and further capable of attaining positively a stable effect of preventing leakage without any skilled work.SOLUTION: There is provided an enclosing cover 1 composed of a pair of cover half-bodies 10, 10 enclosing a pipe connection part where two or more pipe ends Pa are connected through a pipe joint. The cover half bodies 10 have an abutting surface 11 along a plane S including axis centers Lp, Lp of two or more pipe ends Pa, Pa and a semicircular arc-shaped recess 12 corresponding to the pipe end Pa, closed annular packings 2, 2 are arranged at each of the cover half bodies 10, 10, the packings 2 correspond to the abutting surface 11 of the cover half bodies 10 and the semicircular arc-shaped recess 12. At the abutting surface 11, the packings 2 are abutted to each other and at the semicircular arc-shaped recess 12, the enclosing cover 1 abuts against the pipe end Pa and sealingly surrounds a pipe connection part J.SELECTED DRAWING: Figure 2

Description

本発明は、漏れ防止具に関する。   The present invention relates to a leak prevention device.

従来、管継手を介して2本以上のパイプ端部を相互に接続した配管接続部から、水や湯等の被密封液体の漏洩が発生したとき、断水して管継手を交換するが、病院やホテル等の配管においては、直ぐに断水を行うことができないため、漏洩が発生したとき、又は、発生する以前に、上記配管接続部に、止水用粘着テープ(例えば、特許文献1参照)を巻着していた。   Conventionally, when leakage of sealed liquid such as water or hot water has occurred from a pipe connection part where two or more pipe ends are connected to each other via a pipe joint, the pipe joint is replaced by water shutoff. In piping such as hotels and hotels, water cannot be immediately cut off, so when leakage occurs or before it occurs, a water-stopping adhesive tape (see, for example, Patent Document 1) is attached to the piping connection portion. I was wearing it.

特開平2−132173号公報JP-A-2-132173

しかし、配管接続部の凹凸部や弯曲部に、粘着テープを密に巻着する作業は、手間と時間がかかるといった問題や、作業者の技能(熟練度)によって漏れ防止効果(止水性)が安定しないという問題があった。   However, the work of tightly winding the adhesive tape around the concave and convex parts and the bent part of the pipe connection part is troublesome and time consuming, and the leak prevention effect (water-stopping) depends on the skill (skill level) of the operator. There was a problem that it was not stable.

そこで、本発明は、配管接続部から被密封液体の漏洩が発生したとき、又は、発生する以前に、漏れ対策を容易かつ迅速に行え、しかも、熟練した技能が無くとも安定した漏れ防止効果(止水性)を確実に得ることが可能な漏れ防止具の提供を目的とする。   Therefore, the present invention is able to easily and quickly take measures against leakage when a sealed liquid leaks from a pipe connection part or before it occurs, and has a stable leakage prevention effect (without skilled skills). An object of the present invention is to provide a leak preventer capable of reliably obtaining a water-stopping property.

上記目的を達成するために、本発明の漏れ防止具は、管継手を介して2本以上のパイプ端部を相互に接続した配管接続部を包囲する一対のカバー半体から成る包囲カバーを備え、上記カバー半体は、2本以上の上記パイプ端部の軸心を含む平面に沿った合わせ面と、上記パイプ端部に対応する半円弧状凹部と、を有し、上記カバー半体の各々に閉環状のパッキンが配設され、上記パッキンは、上記カバー半体の上記合わせ面及び上記半円弧状凹部に対応し、上記合わせ面においては上記パッキンが相互に当接し、上記半円弧状凹部においては上記パイプ端部に当接して、上記包囲カバーが上記配管接続部を密封包囲するものである。   In order to achieve the above object, a leakage preventing device of the present invention comprises an enveloping cover comprising a pair of cover halves that enclose a pipe connecting portion in which two or more pipe ends are connected to each other via a pipe joint. The cover half has two or more mating surfaces along a plane including the axis of the pipe end, and a semicircular arc-shaped recess corresponding to the pipe end. Closed ring packings are disposed on each of the packings, and the packings correspond to the mating surfaces and the semicircular arc-shaped recesses of the cover halves, and the packings abut each other on the mating surfaces, and the semicircular arcs The recessed portion is in contact with the end portion of the pipe, and the surrounding cover hermetically surrounds the pipe connecting portion.

また、上記カバー半体は、チーズ型の上記管継手に接続した3本の上記パイプ端部に対応可能な3つの半円弧状凹部を有し、エルボ型の上記管継手又はソケット型の上記管継手に接続されている上記パイプ端部に非対応となる上記半円弧状凹部に上記パッキンを介して配設される閉塞栓を具備するものである。
また、上記パッキンは、上記カバー半体の上記半円弧状凹部に対応する半円弧状シール部を有し、上記半円弧状シール部と上記パイプ端部の間に介装されるシール内径調節用の半円弧型のパッキン片を具備する。
Moreover, the said cover half body has three semi-arc-shaped recessed parts which can respond | correspond to the three said pipe end parts connected to the said cheese-type pipe joint, The said elbow-type said pipe joint or the said socket-type said pipe The plug is disposed in the semicircular arc-shaped recess that does not correspond to the pipe end connected to the joint via the packing.
The packing has a semi-arc-shaped seal portion corresponding to the semi-arc-shaped concave portion of the cover half body, and is used for adjusting a seal inner diameter that is interposed between the semi-arc-shaped seal portion and the pipe end portion. The semicircular arc type packing piece is provided.

本発明によれば、配管接続部から水や湯等の被密封液体の漏れが発生したとき、又は、発生する以前、のいずれにおいても、断水を行うことなく、漏れ対策を行うことができる。漏れ対策を容易かつ迅速に行うことができる。熟練した技能がなくとも確実に漏れを防止できると共に、安定したシール性(止水性)を得ることができる。特に、病院やホテル等で、被密封流体を24時間年中送流させる必要がある循環型給湯配管の配管接続部に対して、漏れ対策を行うのに好適である。   According to the present invention, it is possible to take measures against leakage without performing water shutoff either when a leak of sealed liquid such as water or hot water occurs from the pipe connection portion or before it occurs. Leakage measures can be taken easily and quickly. Leakage can be reliably prevented even without skilled skills, and a stable sealing property (water-stopping property) can be obtained. In particular, it is suitable for taking measures against leakage in a pipe connection portion of a circulating hot water supply pipe that needs to send a sealed fluid 24 hours a year in hospitals, hotels, and the like.

本発明の実施の一形態を示し、密封包囲状態の一例を示す正面図である。It is a front view which shows one Embodiment of this invention and shows an example of a sealing enclosure state. 密封包囲状態の側面図である。It is a side view of a sealing enclosure state. 合体準備状態の一例を示す正面図である。It is a front view which shows an example of a unification preparation state. カバー半体の一例を示す全体図であって、(a)は正面図であり、(b)は平面図であり、(c)は側面図である。It is a general view which shows an example of a cover half body, Comprising: (a) is a front view, (b) is a top view, (c) is a side view. パッキンの一例を示す全体図であって、(a)は正面図であり、(b)は平面図であり、(c)は側面図である。It is a general view which shows an example of packing, Comprising: (a) is a front view, (b) is a top view, (c) is a side view. 要部拡大断面図である。It is a principal part expanded sectional view. 要部拡大断面図である。It is a principal part expanded sectional view. 管継手がエルボ型の場合の密封包囲状態を示す正面図である。It is a front view which shows the sealing enclosure state in case a pipe joint is an elbow type. 管継手がエルボ型の場合の合体準備状態を示す正面図である。It is a front view which shows the united preparation state in case a pipe joint is an elbow type. 管継手がソケット型の場合の合体準備状態を示す正面図である。It is a front view which shows the united preparation state in case a pipe joint is a socket type. 要部拡大正面図である。It is a principal part enlarged front view. 要部拡大斜視図である。It is a principal part expansion perspective view. 管継手が異径のソケット型の場合の合体準備状態を示す正面図である。It is a front view which shows the union preparation state in case a pipe joint is a socket type of a different diameter. 要部拡大断面図である。It is a principal part expanded sectional view.

以下、図示の実施形態に基づき本発明を詳説する。
本発明に係る漏れ防止具は、図1乃至図3に示すように、管継手Kを介して2本以上のパイプ端部Paを相互に接続した配管接続部Jを包囲する一対のカバー半体10,10から成る包囲カバー1と、カバー半体10,10の各々に配設される閉環状のパッキン2,2と、一対のカバー半体10,10を合体させると共に一対のパッキン2,2を一対のカバー半体10,10にて挟持状に保持するための締め付け手段8と、を備えている。
言い換えると、包囲カバー1は、2本以上のパイプ端部Pa,Paの軸心Lp,Lpを含む平面S(以下、基準平面Sと呼ぶ場合がある)に沿って2分割される一対のカバー半体10,10を備えている。
Hereinafter, the present invention will be described in detail based on illustrated embodiments.
As shown in FIGS. 1 to 3, the leak preventer according to the present invention is a pair of cover halves that surround a pipe connection portion J in which two or more pipe end portions Pa are connected to each other via a pipe joint K. The envelope cover 1 composed of 10 and 10, the closed annular packings 2 and 2 disposed in each of the cover halves 10 and 10, and the pair of cover halves 10 and 10 are combined and the pair of packings 2 and 2 And a fastening means 8 for holding the pair of cover halves 10 and 10 in a sandwiched manner.
In other words, the surrounding cover 1 is a pair of covers that are divided into two along a plane S (hereinafter sometimes referred to as a reference plane S) that includes the axis Lp, Lp of two or more pipe ends Pa, Pa. Half body 10 is provided.

図1及び図2に示すように、一対のカバー半体10,10で一対のパッキン2,2を挟持状に保持しつつ、締め付け手段8で一対のカバー半体10,10を合体させて包囲カバー1を形成して、配管接続部Jを密封包囲した状態を、密封包囲状態又は合体状態と呼ぶ場合がある。
図3に示すように、一対のカバー半体10,10の一方に配管接続部Jを対応させた状態を、合体準備状態と呼ぶ場合がある。
なお、図3と図9乃至図13において、パッキン2は、他部材との判別を容易にするために格子状の網掛け模様を付与して図示している。
As shown in FIGS. 1 and 2, the pair of cover halves 10, 10 are held together by the pair of cover halves 10, 10, and the pair of cover halves 10, 10 are combined and surrounded by the fastening means 8. A state in which the cover 1 is formed and the pipe connection portion J is hermetically surrounded may be referred to as a hermetically sealed state or a combined state.
As shown in FIG. 3, the state in which the pipe connection portion J is associated with one of the pair of cover halves 10 and 10 may be referred to as a combined preparation state.
3 and 9 to 13, the packing 2 is illustrated with a lattice-like mesh pattern to facilitate discrimination from other members.

図1乃至図4に示すように、基準平面Sに沿った(平行状の)合わせ面11と、パイプ端部Paに対応する半円弧状凹部12と、管継手K及びパイプ端部Paに対応し主として管継手Kを収容(対応)するための横断面半円弧状の収容凹部13と、を有している。   As shown in FIG. 1 to FIG. 4, it corresponds to the mating surface 11 (parallel) along the reference plane S, the semicircular recess 12 corresponding to the pipe end Pa, the pipe joint K and the pipe end Pa. And a housing recess 13 having a semicircular cross section for housing (corresponding to) the pipe joint K.

図例において、カバー半体10は、チーズ型の管継手K(チーズ継手Kt)に接続した3本のパイプPa,Pa,Paに夫々対応可能な3つの半円弧状凹部12,12,12と、チーズ継手Kt及びパイプ端部Paに対応する平面視(正面視)T字状の収容凹部13と、を有している。
つまり、包囲カバー1(合体状態の一対のカバー半体10,10)は、一対のカバー半体10,10の半円弧状凹部12,12で形成されるパイプ挿通用のカバー開口部1gを3つ有し、さらに、一対のカバー半体10,10の収容凹部13,13で形成されるチーズ継手型内部空間部を有する形状(チーズ継手形状)である。
In the illustrated example, the cover half 10 includes three semicircular arc-shaped recesses 12, 12, 12 that can respectively correspond to three pipes Pa, Pa, Pa connected to a cheese-shaped pipe joint K (cheese joint Kt). And a T-shaped accommodating recess 13 in plan view (front view) corresponding to the cheese joint Kt and the pipe end Pa.
That is, the surrounding cover 1 (the pair of cover halves 10 and 10 in the combined state) has three cover openings 1g for pipe insertion formed by the semicircular recesses 12 and 12 of the pair of cover halves 10 and 10. And a shape (cheese joint shape) having a cheese joint type internal space formed by the housing recesses 13 and 13 of the pair of cover halves 10 and 10.

さらに、カバー半体10は、合わせ面11及び半円弧状凹部12に、パッキン2が配設される凹溝部15を有している。
凹溝部15は、カバー外方側の溝側壁面15aと、カバー内方側の溝側壁面15bと、溝底面15cと、を有する横断面コの字状である。
図6に示すように、凹溝部15の溝幅寸法W15は、パッキン2の横断面幅寸法W2よりも大きく形成している。より具体的には、溝幅寸法W15を、横断面幅寸法W2の1.2倍以上1.9倍以下に設定している。
そして、パッキン2を、凹溝部15のカバー外方側の溝側壁面15aに寄せて配設している。
このように構成することで、パッキン2,2がカバー半体10から圧縮力を受けた場合に、主としてカバー内方側へ広がるように弾性変形し、水や湯等の被密封液体からの液圧(水圧)を受け止めやすくすると共に、カバー外方側へ飛び出すのを防止する。
Further, the cover half 10 has a concave groove portion 15 in which the packing 2 is disposed in the mating surface 11 and the semicircular arc-shaped concave portion 12.
The concave groove portion 15 has a U-shaped cross section having a groove side wall surface 15a on the outer side of the cover, a groove side wall surface 15b on the inner side of the cover, and a groove bottom surface 15c.
As shown in FIG. 6, the groove width dimension W15 of the recessed groove portion 15 is formed to be larger than the transverse section width dimension W2 of the packing 2. More specifically, the groove width dimension W15 is set to be not less than 1.2 times and not more than 1.9 times the transverse section width dimension W2.
The packing 2 is arranged close to the groove side wall surface 15a on the outer side of the cover of the concave groove portion 15.
With this configuration, when the packings 2 and 2 receive a compressive force from the cover half 10, they are elastically deformed so as to spread mainly inward of the cover, and liquid from a sealed liquid such as water or hot water. Makes it easy to receive pressure (water pressure) and prevents it from popping out of the cover.

図5に示すように、パッキン2は、横断面一文字状の細帯閉環状であって、合わせ面11に対応する(基準平面Sに平行状の)平板状シール部21と、3つの半円弧状凹部12に夫々対応する3つの半円弧状シール部22と、を有している。
また、密封包囲状態で、一対のパッキン2,2は、一方の半円弧状シール部22と他方の半円弧状シール部22で、パイプシール用の円形状の開口パッキン部2g(図2参照)を3つ形成する。
As shown in FIG. 5, the packing 2 is a narrow band closed ring with a single cross-sectional shape, and corresponds to the mating surface 11 (parallel to the reference plane S) and three semicircles. And three semicircular arc-shaped seal portions 22 respectively corresponding to the arc-shaped concave portions 12.
Further, in the hermetically sealed state, the pair of packings 2 and 2 are composed of one semicircular arc seal portion 22 and the other semicircular arc seal portion 22, and a circular opening packing portion 2 g for pipe seal (see FIG. 2). Three are formed.

半円弧状シール部22は、頂部肉厚寸法t22を、平板状シール部21の板厚寸法t21と同等に設定している。同等に設定しているとは、頂部肉厚寸法t22を板厚寸法t21の0.8倍以上1.2倍以下に設定することをいう。
半円弧状シール部22の内周面22bの曲率半径Rbの内周中心点Qbに対して、半円弧状シール部22の外周面22aの曲率半径Raの外周中心点Qaを、頂部22dから離間するラジアル外方向Yへ所定寸法Zだけ平行移動状に偏心させて、半円弧状シール部22の頂部22dから半円弧状シール部22の裾部22eに向ってシール肉厚寸法が増加するように設定している。このように設定することで、密封包囲状態において、半円弧状シール部22の頂部22d側の圧縮率と裾部22e側の圧縮率を同等にでき略均一にパイプ端部Paに密着して、確実かつ安定して所定のシール性能を発揮できる。
さらに、半円弧状シール部22の外周面22aと、平板状シール部21の背面21aとが接するシール隅部26が肉厚となるようにR状に設けている。
The semicircular arc-shaped seal portion 22 has a top thickness dimension t22 set equal to the plate thickness dimension t21 of the flat plate-shaped seal portion 21. “Equally set” means that the top thickness dimension t22 is set to be not less than 0.8 times and not more than 1.2 times the plate thickness dimension t21.
The outer peripheral center point Qa of the radius of curvature Ra of the outer peripheral surface 22a of the semicircular arc-shaped seal portion 22 is separated from the top portion 22d with respect to the inner peripheral center point Qb of the radius of curvature Rb of the inner peripheral surface 22b of the semicircular arc-shaped seal portion 22. The seal thickness is increased from the top portion 22d of the semicircular arc-shaped seal portion 22 toward the skirt portion 22e of the semicircular arc-shaped seal portion 22 by being eccentrically displaced by a predetermined dimension Z in the radial outward direction Y. It is set. By setting in this way, in the hermetically sealed state, the compression rate on the top 22d side and the compression rate on the skirt 22e side of the semicircular arc-shaped seal portion 22 can be made equal and closely contacted with the pipe end Pa. A predetermined sealing performance can be exhibited reliably and stably.
Furthermore, the seal corner 26 where the outer peripheral surface 22a of the semicircular arc-shaped seal portion 22 and the back surface 21a of the flat plate-shaped seal portion 21 are in contact with each other is formed in an R shape.

そして、図7に示すように、密封包囲状態において、パッキン2は、平板状シール部21の表て面21b同士が相互に当接(圧接)し、半円弧状シール部22の内周面22bがパイプ端部Paに当接(圧接)し、平板状シール部21の背面21aが合わせ面11の溝底面15cに圧接し、半円弧状シール部22の外周面22aが半円弧状凹部12の溝底面15cに圧接して、シール作用を発揮する。   As shown in FIG. 7, in the hermetically sealed state, the packing 2 has the surface 21 b of the flat seal portion 21 in contact (pressure contact) with each other, and the inner peripheral surface 22 b of the semicircular arc seal portion 22. Comes into contact (pressure contact) with the pipe end Pa, the back surface 21a of the flat plate-shaped seal portion 21 is pressed against the groove bottom surface 15c of the mating surface 11, and the outer peripheral surface 22a of the semicircular arc-shaped seal portion 22 is the semicircular arc-shaped concave portion 12. It is pressed against the groove bottom surface 15c and exhibits a sealing action.

さらに、平板状シール部21に対応する(合わせ面11に設けられた)凹溝部15の溝底面15cと、半円弧状シール部22に対応する(半円弧状凹部12に設けられた)凹溝部15の溝底面15cと、が接する(面取状乃至R状の)溝角部15eが、R状のシール隅部26を、平板状シール部21の表て面21b及び半円弧状シール部22の内周面22b側へ押圧するように食い込む。なお、参考例として、この図7に溝角部15eが食い込まない場合のシール隅部26を二点鎖線で図示している。
このように、密封包囲状態において、シール隅部26に溝角部15eが食い込むように構成することで、シール隅部26近傍とパイプ端部Paとの密着力や、一方のパッキン2のシール隅部26近傍と他方のパッキン2のシール隅部26近傍との密着力を向上できる。また、カバー内方からの液圧(水圧)に耐えられる密着力(圧接力)が得られる。
Further, the groove bottom surface 15c of the concave groove portion 15 (provided on the mating surface 11) corresponding to the flat seal portion 21 and the concave groove portion corresponding to the semicircular arc shaped seal portion 22 (provided in the semicircular arc concave portion 12). A groove corner portion 15e (a chamfered or R-shaped) which is in contact with the groove bottom surface 15c of the groove 15 forms an R-shaped seal corner portion 26, a surface 21b of the flat plate-shaped seal portion 21 and a semicircular arc-shaped seal portion 22 It bites in so that it may press to the inner peripheral surface 22b side. As a reference example, a seal corner portion 26 in the case where the groove corner portion 15e does not bite is illustrated in FIG. 7 by a two-dot chain line.
As described above, in the hermetically sealed state, the groove corner portion 15e bites into the seal corner portion 26, so that the adhesion between the vicinity of the seal corner portion 26 and the pipe end portion Pa or the seal corner of one packing 2 is obtained. The adhesion between the vicinity of the portion 26 and the vicinity of the seal corner 26 of the other packing 2 can be improved. Moreover, the contact | adhesion force (pressure contact force) which can endure the hydraulic pressure (water pressure) from the inside of a cover is obtained.

ここで、密封包囲状態で半円弧状シール部22の内周面22b(開口パッキン部2g)が密着可能な外径寸法を有するパイプ端部Paを第1外径パイプ端部Paと呼ぶと、一対のカバー半体10,10及び一対のパッキン2,2は、チーズ継手Ktを介して3本の第1外径パイプ端部Paが相互に接続された配管接続部Jを密封包囲して漏れを防止する。   Here, when the pipe end portion Pa having an outer diameter that allows the inner peripheral surface 22b (opening packing portion 2g) of the semicircular arc-shaped seal portion 22 to be tightly sealed is referred to as a first outer diameter pipe end portion Pa, The pair of cover halves 10 and 10 and the pair of packings 2 and 2 hermetically enclose the pipe connection portion J where the three first outer diameter pipe ends Pa are connected to each other via the cheese joint Kt and leak. To prevent.

なお、本発明において「漏れ防止」や「漏れを防止」とは、配管接続部Jから漏れる被密封液体を配管接続部Jの近傍(包囲カバー1の内部)に留めて、配管接続部Jの周囲にある床面、壁面、天井面、機械や電気系設備、他の配管部等に、被密封液体がかからないようにする(包囲カバー1の外部に拡散させない)ことである。したがって、本発明の漏れ防止具は、配管接続部Jから被密封液体が漏れる以前、又は、漏れた後、いずれのタイミングで配管接続部Jを密封包囲(配管接続部Jに外嵌状に取着)して用いても良い。   In the present invention, “leakage prevention” and “prevention of leakage” mean that the liquid to be sealed that leaks from the pipe connection portion J is held in the vicinity of the pipe connection portion J (inside the surrounding cover 1), and the pipe connection portion J This is to prevent the liquid to be sealed from being applied to the surrounding floor surface, wall surface, ceiling surface, machine and electrical system equipment, other piping parts, etc. (do not diffuse outside the enclosure cover 1). Therefore, the leak prevention device of the present invention is configured to seal the pipe connection portion J before the liquid to be sealed leaks from the pipe connection portion J or after the leakage. May be used).

次に、図8乃至図10に示すように、エルボ型の管継手K(エルボ継手Ke)又はソケット型の管継手K(ソケット継手Ks)に接続されている2本パイプ端部Pa,Paに非対応となる半円弧状凹部12(12B)に半円弧状シール部22(22B)を介して配設される閉塞栓3を備えている。つまり、閉塞栓3は、パイプ端部Paに非対応となる半円弧状シール部22Bに対応して配設される。   Next, as shown in FIGS. 8 to 10, the two pipe ends Pa and Pa connected to the elbow type pipe joint K (elbow joint Ke) or the socket type pipe joint K (socket joint Ks) are connected. A non-corresponding semicircular arc recess 12 (12B) is provided with a blocking plug 3 disposed via a semicircular arc seal portion 22 (22B). That is, the closing plug 3 is disposed corresponding to the semicircular arc-shaped seal portion 22B that does not correspond to the pipe end portion Pa.

閉塞栓3は、カバー外方側に開口する有底筒状であって、パイプ端部Paに非対応の半円弧状シール部22Bに密着可能な横断面円形の擬似パイプ部31と、収容凹部13においてパイプ端部Paに非対応の半円弧状凹部12B近傍に配設される補てん部32と、パイプ端部Paに非対応となる半円弧状凹部12B近傍のカバー内方側壁面16に対面状に配設される抜け防止用の第1ストッパ面33と、パイプ端部Paに非対応となる半円弧状凹部12B近傍のカバー外方側壁面17に対面状に配設される没入防止用の第2ストッパ面34と、を有している。   The closing plug 3 has a bottomed cylindrical shape that opens to the outer side of the cover, a pseudo pipe portion 31 having a circular cross section that can be in close contact with the semicircular arc-shaped seal portion 22B that does not correspond to the pipe end portion Pa, and an accommodation recess. 13 facing the semi-arc-shaped recess 12B in the vicinity of the semicircular arc-shaped recess 12B not corresponding to the pipe end Pa and the cover inner side wall surface 16 in the vicinity of the semi-arc-shaped recess 12B not corresponding to the pipe end Pa. The first stopper surface 33 for preventing slippage disposed in the shape of a pipe and the cover for preventing immersion disposed on the cover outer side wall surface 17 near the semicircular arc-shaped recess 12B that does not correspond to the pipe end Pa. Second stopper surface 34.

言い換えると、図8に示すように、閉塞栓3は、密封包囲状態で、パイプ端部Paが対応していないカバー開口部1gに開口パッキン部2gを介して配設され、パイプ端部Paに非対応の開口パッキン部2gと密着して、カバー開口部1gを閉塞する。   In other words, as shown in FIG. 8, the closing plug 3 is disposed in a sealed surrounding state in the cover opening 1g that does not correspond to the pipe end Pa through the opening packing 2g, and is connected to the pipe end Pa. The cover opening 1g is closed by closely contacting the non-corresponding opening packing 2g.

つまり、一対のカバー半体10,10と、一対のパッキン2,2と、1つの閉塞栓3とで、2本の第1外径パイプ端部Pa,Paを相互に接続するエルボ継手Ke又はソケット継手Ksを有する配管接続部Jを密封包囲して漏れを防止する。   That is, the elbow joint Ke that connects the two first outer diameter pipe ends Pa, Pa to each other by the pair of cover halves 10, 10, the pair of packings 2, 2, and the single closing plug 3 The pipe connection portion J having the socket joint Ks is hermetically enclosed to prevent leakage.

また、閉塞栓3の補てん部32は、収容凹部13において、エルボ継手Ke又はソケット継手Ksと、パイプ端部Paと、に非対応の部位(空間)に対応する(配設される)。
つまり、配管接続部Jから被密封液体が漏れている場合に、密封包囲状態の包囲カバー1の内部空間部に貯液される被密封液体(死水)の貯液量を減少させる(死水の貯まる虞のある容積を減少させる)。
Further, the filling portion 32 of the closing plug 3 corresponds to (is arranged in) the portion (space) in the accommodation recess 13 that does not correspond to the elbow joint Ke or the socket joint Ks and the pipe end portion Pa.
In other words, when the liquid to be sealed leaks from the pipe connection portion J, the storage amount of the liquid to be sealed (dead water) stored in the internal space portion of the surrounding cover 1 in the sealed surrounding state is reduced (dead water is accumulated). Reduce the volume at risk).

閉塞栓3は、補てん部32が円筒形状の擬似パイプ部31よりも大径の有底円筒形状であって、擬似パイプ部31と補てん部32との段差端面を第1ストッパ面33とし、擬似パイプ部31のカバー外方側端部(先端部)に設けた外鍔状面を第2ストッパ面34としている。   The plug 3 has a bottomed cylindrical shape in which the filling portion 32 is larger in diameter than the cylindrical pseudo pipe portion 31, and the step end surface between the pseudo pipe portion 31 and the filling portion 32 is a first stopper surface 33, An outer flange-like surface provided at the outer end (tip portion) of the pipe portion 31 on the cover side is used as a second stopper surface 34.

次に、図11乃至図14に示すように、パッキン2の半円弧状シール部22に対応する半円弧型のパッキン片5を備えている。
パッキン片5は、半円弧状シール部22の内周面曲率半径Rb(図5参照)よりも小さい曲率半径を有する内周面5bを有している。
Next, as shown in FIGS. 11 to 14, a semicircular arc packing piece 5 corresponding to the semicircular arc seal portion 22 of the packing 2 is provided.
The packing piece 5 has an inner peripheral surface 5b having a smaller radius of curvature than the inner peripheral surface radius of curvature Rb (see FIG. 5) of the semicircular arc-shaped seal portion 22.

ここで、第1外径パイプ端部Paよりも小径のパイプ端部Paを第2外径パイプ端部Pa´と呼ぶと、密封包囲状態において、パッキン片5の内周面5bは、第2外径パイプ端部Pa´に密着可能に設定している。
また、密封包囲状態で半円弧状シール部22の内周面22bに密着可能な外周面5a(図14参照)を有している。
つまり、パッキン片5は、パッキン2の半円弧状シール部22で対応できない小径のパイプ端部Pa´をシールするためのシール内径調整用の部品である。
Here, when the pipe end portion Pa having a smaller diameter than the first outer diameter pipe end portion Pa is referred to as a second outer diameter pipe end portion Pa ′, the inner peripheral surface 5b of the packing piece 5 is second in the sealed surrounding state. The outer diameter pipe end portion Pa ′ is set so as to be in close contact.
Moreover, it has the outer peripheral surface 5a (refer FIG. 14) which can be closely_contact | adhered to the inner peripheral surface 22b of the semicircular arc-shaped seal part 22 in the sealing surrounding state.
That is, the packing piece 5 is a seal inner diameter adjusting part for sealing a small-diameter pipe end portion Pa ′ that cannot be handled by the semicircular arc-shaped seal portion 22 of the packing 2.

例えば、図13に示すように異径ソケット型の管継手K(異径ソケット継手Ks´)を介して第1外径パイプ端部Paと第2外径パイプ端部Pa´を相互に接続した配管接続部Jを密封包囲する場合に、第2外径パイプ端部Pa´に対応する半円弧状凹部12(12C)に半円弧状シール部22(22C)を介してパッキン片5を配設して、シール内径寸法を調節することが可能となる。   For example, as shown in FIG. 13, the first outer diameter pipe end portion Pa and the second outer diameter pipe end portion Pa ′ are connected to each other via a different diameter socket type pipe joint K (different diameter socket joint Ks ′). When the pipe connection portion J is hermetically surrounded, the packing piece 5 is disposed in the semicircular arc-shaped concave portion 12 (12C) corresponding to the second outer diameter pipe end portion Pa 'via the semicircular arc-shaped seal portion 22 (22C). Thus, the inner diameter of the seal can be adjusted.

言い換えると、図14に示すように、密封包囲状態で、一対のパッキン片5,5は、第2外径パイプ端部Pa´に対応するカバー開口部1gに開口パッキン部2gを介して配設され、開口パッキン部2gよりも小径の円形状の開口シール部5gを形成して、第2外径パイプ端部Pa´に密着して、第2外径パイプ端部Paと開口パッキン部2gの間を密封する。   In other words, as shown in FIG. 14, in a hermetically sealed state, the pair of packing pieces 5 and 5 are disposed via the opening packing portion 2g in the cover opening portion 1g corresponding to the second outer diameter pipe end portion Pa '. A circular opening seal portion 5g having a diameter smaller than that of the opening packing portion 2g is formed and is in close contact with the second outer diameter pipe end portion Pa ′, so that the second outer diameter pipe end portion Pa and the opening packing portion 2g Seal the gap.

また、図11及び図12に示すように、パッキン片5は、半円弧状シール部22のカバー外方側面22fに係止してパッキン片5がカバー内方側へ移動する阻止するための(位置決め用の)半円外鍔状の係止部51を有している。
また、パッキン片5は、合体準備状態(半円弧状シール部22の内周面22bに配設した状態)で、基準平面Sに沿った、一対の円弧終端部5d,5dが平板状シール部21の表て面21bから突出するように形成している。
このように形成することで、密封包囲状態において、パッキン片5の円弧終端部5d近傍が十分に圧縮され、他方のパッキン片5の円弧終端部5dと、第2外径パイプ端部Pa´と、半円弧状シール部22の内周面22bと、が相互に圧接して所定のシール性能が確実に発揮される。
Further, as shown in FIGS. 11 and 12, the packing piece 5 is engaged with the cover outer side surface 22f of the semicircular arc-shaped seal portion 22 to prevent the packing piece 5 from moving inward of the cover ( It has a semi-circular outer hook-shaped locking part 51 (for positioning).
The packing piece 5 has a pair of arc terminal portions 5d and 5d along the reference plane S in a united preparation state (a state arranged on the inner peripheral surface 22b of the semi-arc-shaped seal portion 22). 21 is formed so as to protrude from the surface 21b.
By forming in this way, in the hermetically sealed state, the vicinity of the arc end portion 5d of the packing piece 5 is sufficiently compressed, and the arc end portion 5d of the other packing piece 5 and the second outer diameter pipe end portion Pa ′ The inner circumferential surface 22b of the semicircular arc-shaped seal portion 22 is brought into pressure contact with each other, and a predetermined sealing performance is reliably exhibited.

そして、図13に示すように、一対のカバー半体10,10と、一対のパッキン2,2と、一対のパッキン片5,5と、1つの閉塞栓3とで、第1外径パイプ端部Paと第2外径パイプ端部Pa´とを相互に接続する異径のソケット型の管継手K(異径ソケット継手Ks´)を有する配管接続部Jに対応できる。
また、図示省略するが、異径のエルボ型の管継手Kを有する配管接続部Jにも対応できる。
また、図示省略するが、一対のカバー半体10,10と、一対のパッキン2,2と、一対のパッキン片5,5とで、2本の第1外径パイプ端部Paと1本の第2外径パイプ端部Pa´とを接続する異径のチーズ型の管継手Kを有する配管接続部Jに対応可能である。
また、図示省略するが、一対のカバー半体10,10と、一対のパッキン2,2と、4つのパッキン片5,5と、1つの閉塞栓3とで、第2外径パイプ端部Pa´同士を相互に接続する小径用のソケット継手Ks又は小径用のエルボ継手Keを有する配管接続部Jに対応できる。
また、一対のカバー半体10,10と、一対のパッキン2,2と、6つのパッキン片5,5とで、3本の第2外径パイプ端部Pa´を相互に接続する小径用のチーズ継手Ktを有する配管接続部Jに対応可能である。
Then, as shown in FIG. 13, a pair of cover halves 10, 10, a pair of packings 2, 2, a pair of packing pieces 5, 5, and one closing plug 3, the first outer diameter pipe end This can correspond to the pipe connection portion J having the socket joints K of different diameters (different diameter socket joints Ks ′) that connect the portion Pa and the second outer diameter pipe end portion Pa ′.
Although not shown in the drawings, it can also be applied to a pipe connection portion J having elbow-type pipe joints K having different diameters.
Although not shown in the drawings, the pair of cover halves 10 and 10, the pair of packings 2 and 2, and the pair of packing pieces 5 and 5 include two first outer diameter pipe ends Pa and one pair. It is possible to correspond to a pipe connection portion J having a cheese-type pipe joint K having a different diameter that connects the second outer diameter pipe end portion Pa ′.
Although not shown, the second outer diameter pipe end portion Pa includes a pair of cover halves 10 and 10, a pair of packings 2 and 2, four packing pieces 5 and 5, and one closing plug 3. It is possible to correspond to a pipe connection portion J having a small-diameter socket joint Ks or a small-diameter elbow joint Ke that connects ′ to each other.
The pair of cover halves 10, 10, the pair of packings 2, 2, and the six packing pieces 5, 5 are for small diameters that connect the three second outer diameter pipe ends Pa ′ to each other. It can respond to the piping connection part J which has the cheese coupling Kt.

また、図11乃至図13に示すように、第2外径パイプ端部Pa´に対応する半円弧状凹部12C(半円弧状シール部22C)近傍のカバー外方側壁面17に、ネジ部材91にて着脱自在に取着される板状の抜け止め部材6を備えている。
抜け止め部材6は、カバー半体10に取着状態で、第2外径パイプ端部Pa´に接触しないように形成された半円弧状逃がし部60と、半円弧状シール部22Cに配設されたパッキン片5の表て面(カバー外方面)52に対面状に配設されるパッキン片抜け防止用の規制面61と、を有している。
また、図2及び図4に示すように、カバー半体10は、半円弧状凹部12近傍に、ネジ部材91が螺着するネジ孔19を有している。
As shown in FIGS. 11 to 13, a screw member 91 is formed on the cover outer side wall surface 17 near the semicircular recess 12C (semicircular seal 22C) corresponding to the second outer diameter pipe end Pa ′. And a plate-like retaining member 6 that is detachably attached.
The retaining member 6 is disposed on the semicircular arc relief portion 60 formed so as not to contact the second outer diameter pipe end portion Pa ′ and the semicircular arc seal portion 22C when attached to the cover half body 10. And a regulating surface 61 for preventing the packing piece from being removed so as to face the front surface (cover outer surface) 52 of the packing piece 5.
As shown in FIGS. 2 and 4, the cover half 10 has a screw hole 19 into which the screw member 91 is screwed in the vicinity of the semicircular arc-shaped recess 12.

また、図1乃至図3、図8乃至図10と図13に示すように、一方のカバー半体10と他方のカバー半体10は、連結手段7によって、揺動開閉自在連結されている。
図1乃至図3に於て、連結手段7は、カバー半体10において凹溝部15よりもカバー外方側に設けた通し孔71と、一対のカバー半体10,10の通し孔71,71を挿通する環状連結部材72と、を備えている。
環状連結部材72は、樹脂製の線状結束バンドを環状に自己係合させたもの、或いは、金属製リング部材である。
このように、連結することで、高所での作業において、一対のカバー半体10,10の一方を落下させてしまうような事故を防止できると共に、作業者が一人でも容易かつ迅速に一対のカバー半体10,10を合体できる。
Further, as shown in FIGS. 1 to 3, 8 to 10, and 13, one cover half 10 and the other cover half 10 are connected to each other by a connecting means 7 so as to be swingable.
In FIG. 1 to FIG. 3, the connecting means 7 includes a through hole 71 provided in the cover half body 10 on the outer side of the cover with respect to the recessed groove portion 15, and through holes 71, 71 in the pair of cover half bodies 10, 10. And an annular connecting member 72 that is inserted therethrough.
The annular connecting member 72 is a ring-shaped self-engaged resin-made linear binding band or a metal ring member.
In this way, it is possible to prevent an accident in which one of the pair of cover halves 10 and 10 is dropped during work at a high place, and a single operator can easily and quickly pair a pair. Cover halves 10 and 10 can be combined.

締め付け手段8は、カバー半体10において凹溝部15よりもカバー外方側に設けた複数の貫孔18,18に夫々挿通する複数のボルト部材81と、複数のボルト部材81に夫々螺着する複数のナット部材82と、を備えたボルト・ナット結合である。
締め付け手段8の締め付け力によって、一対のカバー半体10,10を、相互に引き寄せて、配管接続部Jに、一対のパッキン2,2を介して外嵌状(挟持状)に取着可能である。
The tightening means 8 is screwed to the plurality of bolt members 81 and the plurality of bolt members 81 respectively inserted into the plurality of through holes 18, 18 provided on the cover outer side of the cover groove 10 on the outer side of the cover 15. And a bolt-nut connection including a plurality of nut members 82.
The pair of cover halves 10 and 10 can be pulled toward each other by the tightening force of the tightening means 8 and can be attached to the pipe connection portion J in an external fitting state (clamping state) via the pair of packings 2 and 2. is there.

カバー半体10及び抜け止め部材6は、金属製であって、特に、耐腐蝕性や防錆性に優れるSCS13等のステンレス鋳鋼が望ましい。
また、パッキン2及びパッキン片5は、ゴム製であって、特に、耐塩素性(耐塩素水性)に優れるエチレン・プロピレン・ジエンゴム(EPDM)が好ましい。
閉塞栓3は、金属製であって、特に、耐腐蝕性や耐圧性に優れるCAC406等の青銅鋳物が望ましい。
The cover half 10 and the retaining member 6 are made of metal, and stainless steel cast such as SCS13, which is excellent in corrosion resistance and rust prevention, is particularly desirable.
Further, the packing 2 and the packing piece 5 are made of rubber, and ethylene / propylene / diene rubber (EPDM) excellent in chlorine resistance (chlorine water resistance) is particularly preferable.
The closure plug 3 is made of metal, and is particularly preferably a bronze casting such as CAC406 which is excellent in corrosion resistance and pressure resistance.

なお、本発明は、設計変更可能であって、閉塞栓3は、有底円筒状に限らず中実形状(円柱状)であっても良い。閉塞栓3の材質は自由であって、金属製に限らず、樹脂製、ゴム製とするも良い。締め付け手段8は、一対のカバー半体10,10の一方に貫孔18を設け、他方に、ナット部(雌ネジ孔)を設けた、ボルト・ナット結合とするも良い。図例において、3つの半円弧状シール部22の内周面22bの曲率半径Rbは同じ(同等)に設定にしているが、例えば、3つの内の1つを小径に設定して(相違させて)、パッキン片5を用いずに、異径チーズ型の管継手Kを密封包囲可能にしても良い。   The design of the present invention can be changed, and the closing plug 3 is not limited to a bottomed cylindrical shape but may be a solid shape (columnar shape). The material of the closing plug 3 is free, and is not limited to metal, but may be made of resin or rubber. The tightening means 8 may be a bolt-nut coupling in which a through hole 18 is provided in one of the pair of cover halves 10 and 10 and a nut portion (female screw hole) is provided in the other. In the illustrated example, the curvature radii Rb of the inner peripheral surfaces 22b of the three semicircular arc-shaped seal portions 22 are set to be the same (equivalent). In addition, without using the packing piece 5, the different-diameter cheese-type pipe joint K may be hermetically enclosed.

以上のように本発明の漏れ防止具は、管継手Kを介して2本以上のパイプ端部Paを相互に接続した配管接続部Jを包囲する一対のカバー半体10,10から成る包囲カバー1を備え、カバー半体10は、2本以上のパイプ端部Pa,Paの軸心Lp,Lpを含む平面Sに沿った合わせ面11と、パイプ端部Paに対応する半円弧状凹部12と、を有し、カバー半体10,10の各々に閉環状のパッキン2,2が配設され、パッキン2は、カバー半体10の合わせ面11及び半円弧状凹部12に対応し、合わせ面11においてはパッキン2が相互に当接し、半円弧状凹部12においてはパイプ端部Paに当接して、包囲カバー1が配管接続部Jを密封包囲するので、配管接続部Jから水や湯等の被密封液体の漏れが発生したとき、又は、発生する以前、のいずれにおいても、断水を行うことなく、漏れ対策を行うことができる。漏れ対策を容易かつ迅速に行うことができる。熟練した技能がなくとも確実かつ安定して止水でき、漏れが発生した配管接続部Jの周囲が被密封液体で濡れるのを防止できる。特に、病院やホテル等で、被密封流体を24時間年中送流させる必要がある循環型給湯配管の配管接続部Jに対して、漏れ対策を行うのに好適である。   As described above, the leakage preventing device of the present invention is an enveloping cover comprising a pair of cover halves 10 and 10 enclosing a pipe connection portion J in which two or more pipe end portions Pa are connected to each other via a pipe joint K. The cover half 10 includes a mating surface 11 along a plane S including the axis Lp, Lp of two or more pipe end portions Pa, Pa, and a semicircular recess 12 corresponding to the pipe end Pa. And each of the cover halves 10 and 10 is provided with a closed ring packing 2 and 2, and the packing 2 corresponds to the mating surface 11 and the semicircular arc-shaped recess 12 of the cover half 10. The packings 2 abut against each other on the surface 11 and a pipe end portion Pa abuts on the semicircular arc-shaped recess 12 so that the surrounding cover 1 hermetically surrounds the pipe connection portion J. In any case before or after leakage of sealed liquid such as A without performing, it is possible to perform the leakage measures. Leakage measures can be taken easily and quickly. Even without skilled skills, water can be reliably and stably stopped, and the periphery of the pipe connection portion J where leakage has occurred can be prevented from getting wet with the liquid to be sealed. In particular, it is suitable for taking measures against leakage in the pipe connection portion J of the circulating hot water supply pipe that needs to send the sealed fluid 24 hours a year in hospitals, hotels, and the like.

また、カバー半体10は、チーズ型の管継手Kに接続した3本のパイプ端部Pa,Pa,Paに対応可能な3つの半円弧状凹部12,12,12を有し、エルボ型の管継手K又はソケット型の管継手Kに接続されているパイプ端部Paに非対応となる半円弧状凹部12にパッキン2を介して配設される閉塞栓3を具備するので、管継手Kが、チーズ型、エルボ型、ソケット型、のいずれの場合であっても、配管接続部Jを容易かつ確実に密封包囲(シール)でき、漏れを防止できる。漏れ対策を行う現場にて、様々な形状の管継手Kに容易かつ迅速に対応できる。カバー半体10及びパッキン2を多種類製造する必要が無く、金型等のイニシャルコスト(初期費用)を大幅に削減できる。   Moreover, the cover half body 10 has three semicircular arc-shaped concave portions 12, 12, 12 that can correspond to the three pipe end portions Pa, Pa, Pa connected to the cheese-shaped pipe joint K. Since the semi-circular concave portion 12 that does not correspond to the pipe end Pa connected to the pipe joint K or the socket-type pipe joint K is provided with the closing plug 3 disposed via the packing 2, the pipe joint K However, even if it is a case of a cheese type, an elbow type, or a socket type, the pipe connection portion J can be sealed and sealed easily and reliably, and leakage can be prevented. It is possible to easily and quickly cope with pipe joints K of various shapes at the site where measures against leakage are taken. There is no need to manufacture many types of the cover half 10 and the packing 2 and the initial cost (initial cost) of the mold can be greatly reduced.

また、パッキン2は、カバー半体10の半円弧状凹部12に対応する半円弧状シール部22を有し、半円弧状シール部22とパイプ端部Paの間に介装されるシール内径調節用の半円弧型のパッキン片5を具備するので、相互に異なる外径のパイプ端部Pa同士を異径型の管継手Kを介して接続した配管接続部Jであっても、容易かつ確実に密封包囲(シール)できる。漏れ対策を行う現場にて、様々な外径寸法のパイプ端部Paに容易かつ迅速に対応できる。カバー半体10及びパッキン2を多種類製造する必要が無く、金型等のイニシャルコスト(初期費用)を大幅に削減できる。   Further, the packing 2 has a semi-arc-shaped seal portion 22 corresponding to the semi-arc-shaped concave portion 12 of the cover half body 10, and the seal inner diameter adjustment is interposed between the semi-arc-shaped seal portion 22 and the pipe end portion Pa. The semicircular arc type packing piece 5 is provided, so that it is easy and reliable even with the pipe connection portion J in which the pipe end portions Pa having different outer diameters are connected to each other through the different diameter type pipe joints K. Can be hermetically sealed (sealed). At the site where leakage countermeasures are taken, it is possible to easily and quickly cope with pipe end portions Pa of various outer diameters. There is no need to manufacture many types of the cover half 10 and the packing 2 and the initial cost (initial cost) of the mold can be greatly reduced.

1 包囲カバー
2 パッキン
3 閉塞栓
5 パッキン片
10 カバー半体
11 合わせ面
12 半円弧状凹部
15 凹溝部
15a 溝側壁面
22 半円弧状シール部
J 配管接続部
K 管継手
Pa パイプ端部
S 平面
Lp 軸心
1 Enclosure cover 2 Packing 3 Blocking plug 5 Packing piece
10 Cover half
11 mating surface
12 Semicircular arc recess
15 Groove
15a Groove side wall
22 Semicircular arc seal J Pipe connection K pipe joint Pa pipe end S plane Lp shaft center

上記目的を達成するために、本発明の漏れ防止具は、管継手を介して2本以上のパイプ端部を相互に接続した配管接続部を包囲する一対のカバー半体から成る包囲カバーと、上記カバー半体の各々に配設される閉環状のパッキンと、を備え、上記カバー半体は、2本以上の上記パイプ端部の軸心を含む平面に沿った合わせ面と、チーズ型の管継手に接続した3本の上記パイプ端部に夫々対応する3つの半円弧状凹部と、を有し、記パッキンは、上記合わせ面に対応する平板状シール部と、3つの上記半円弧状凹部に夫々対応する3つの半円弧状シール部と、を有し、上記パッキンの平板状シール部が相互に当接すると共に上記半円弧状シール部が上記パイプ端部に当接して、チーズ型の管継手を有する上記配管接続部を、密封包囲可能に構成した漏れ防止具に於て、エルボ型の管継手又はソケット型の管継手に接続されている上記パイプ端部に非対応の上記半円弧状シール部に密着可能な擬似パイプ部を有する閉塞栓を具備し、上記非対応の半円弧状シール部に上記閉塞栓を対応させて、2本の上記パイプ端部を相互に接続するエルボ型の管継手又はソケット型の管継手を有する上記配管接続部を、密封包囲可能に構成し、さらに、上記半円弧状シール部と上記パイプ端部の間に介装されるシール内径調節用の半円弧型のパッキン片を具備し、相互に異なる外径の上記パイプ端部の内の小径側に一対の上記パッキン片を配設して、相互に異なる外径の上記パイプ端部同士を接続する異径型の管継手を有する上記配管接続部を、密封包囲可能に構成したものである。 In order to achieve the above object, the leakage preventing device of the present invention comprises an enveloping cover comprising a pair of cover halves enclosing a pipe connecting portion in which two or more pipe ends are connected to each other via a pipe joint , A closed annular packing disposed in each of the cover halves, wherein the cover halves have a mating surface along a plane including the axis of two or more pipe ends, and a cheese- shaped packing It has a three semicircular recesses respectively corresponding to three of the pipe ends which is connected to the pipe joint, the upper Symbol packing, a flat seal portion corresponding to the upper Symbol mating surfaces, three of the half has a three semicircular seal portion respectively corresponding to the arcuate recesses, and the semicircular seal portion with flat sealing portion of the upper Symbol packing abut against each other is brought into contact with the pipe end , the pipe connection having a cheese-type pipe joint, the sealing surround capable structure In the leak preventer, the plug having a pseudo pipe portion that can be in close contact with the semicircular arc-shaped seal portion that does not correspond to the pipe end portion connected to the elbow type pipe joint or the socket type pipe joint. The pipe connection portion having an elbow-type pipe joint or a socket-type pipe joint that includes the non-corresponding semicircular arc-shaped seal portion corresponding to the blocking plug and connects the two pipe ends to each other. And a semi-arc-shaped packing piece for adjusting the inner diameter of the seal interposed between the semi-arc-shaped seal portion and the pipe end, and having different outer diameters. A pair of the packing pieces are disposed on the small diameter side of the pipe end portion, and the pipe connection portion having a different diameter type pipe joint for connecting the pipe end portions having different outer diameters is sealed. It is constructed so that it can be surrounded .

また、上記カバー半体は、上記パッキンが配設される凹溝部を、有し、上記凹溝部は、溝幅寸法を、上記パッキンの横断面幅寸法の1.2倍以上1.9倍以下に設定し、上記パッキンは、上記凹溝部のカバー外方側の溝側壁面に寄せて配設しているものである。
また、上記パッキンは、上記半円弧状シール部の頂部から上記半円弧状シール部の裾部に向かってシール肉厚寸法が増加するように設定している。
The cover half has a recessed groove portion in which the packing is disposed, and the recessed groove portion has a groove width dimension of 1.2 times or more and 1.9 times or less of a transverse cross-sectional width dimension of the packing. The packing is disposed close to the groove side wall surface on the outer side of the cover of the concave groove portion .
The packing is set such that the seal thickness increases from the top of the semicircular arc-shaped seal portion toward the skirt of the semicircular arc-shaped seal portion.

1 包囲カバー
2 パッキン
3 閉塞栓
5 パッキン片
10 カバー半体
11 合わせ面
12 半円弧状凹部
15 凹溝部
15a 溝側壁面
21 平板状シール部
22 半円弧状シール部
22d 頂部
22e 裾部
J 配管接続部
K 管継手
Pa パイプ端部
S 平面
Lp 軸心
W2 横断面幅寸法
W15 溝幅寸法
1 Enclosure cover 2 Packing 3 Blocking plug 5 Packing piece
10 Cover half
11 mating surface
12 Semicircular arc recess
15 Groove
15a Groove side wall
21 Flat seal
22 Semicircular arc seal
22d top
22e Hem J Pipe connection K Pipe joint Pa Pipe end S Plane Lp Axle
W2 cross-sectional width dimensions
W15 groove width dimension

Claims (3)

管継手(K)を介して2本以上のパイプ端部(Pa)を相互に接続した配管接続部(J)を包囲する一対のカバー半体(10)(10)から成る包囲カバー(1)を備え、
上記カバー半体(10)は、2本以上の上記パイプ端部(Pa)(Pa)の軸心(Lp)(Lp)を含む平面(S)に沿った合わせ面(11)と、上記パイプ端部(Pa)に対応する半円弧状凹部(12)と、を有し、
上記カバー半体(10)(10)の各々に閉環状のパッキン(2)(2)が配設され、
上記パッキン(2)は、上記カバー半体(10)の上記合わせ面(11)及び上記半円弧状凹部(12)に対応し、上記合わせ面(11)においては上記パッキン(2)が相互に当接し、上記半円弧状凹部(12)においては上記パイプ端部(Pa)に当接して、上記包囲カバー(1)が上記配管接続部(J)を密封包囲することを特徴とする漏れ防止具。
Enclosure cover (1) comprising a pair of cover halves (10) and (10) surrounding a pipe connection (J) in which two or more pipe ends (Pa) are connected to each other via a pipe joint (K) With
The cover half (10) includes two or more pipe end portions (Pa) (Pa), a mating surface (11) along a plane (S) including an axis (Lp) (Lp) of the pipe end (Pa) (Pa), and the pipe A semicircular arc-shaped recess (12) corresponding to the end (Pa),
Each of the cover halves (10) (10) is provided with a closed ring packing (2) (2),
The packing (2) corresponds to the mating surface (11) and the semicircular arc-shaped recess (12) of the cover half (10), and the packing (2) is mutually connected to the mating surface (11). Leakage prevention characterized in that the semicircular recess (12) abuts against the pipe end (Pa) and the enveloping cover (1) hermetically surrounds the pipe connection (J). Ingredients.
上記カバー半体(10)は、チーズ型の上記管継手(K)に接続した3本の上記パイプ端部(Pa)(Pa)(Pa)に対応可能な3つの上記半円弧状凹部(12)(12)(12)を有し、
エルボ型の上記管継手(K)又はソケット型の上記管継手(K)に接続されている上記パイプ端部(Pa)に非対応となる上記半円弧状凹部(12)に上記パッキン(2)を介して配設される閉塞栓(3)を具備する請求項1記載の漏れ防止具。
The cover half (10) has three semicircular recesses (12) that can correspond to the three pipe ends (Pa) (Pa) (Pa) connected to the cheese-shaped pipe joint (K). ) (12) (12)
The packing (2) in the semicircular arc recess (12) not corresponding to the pipe end (Pa) connected to the elbow pipe joint (K) or the socket type pipe joint (K) The leak preventer according to claim 1, further comprising an obturator plug (3) disposed through the connector.
上記パッキン(2)は、上記カバー半体(10)の上記半円弧状凹部(12)に対応する半円弧状シール部(22)を有し、
上記半円弧状シール部(22)と上記パイプ端部(Pa)の間に介装されるシール内径調節用の半円弧型のパッキン片(5)を具備する請求項1又は2記載の漏れ防止具。
The packing (2) has a semicircular arc-shaped seal portion (22) corresponding to the semicircular arc concave portion (12) of the cover half body (10),
3. Leak prevention according to claim 1 or 2, further comprising a semicircular arc packing piece (5) for adjusting the inner diameter of the seal interposed between the semicircular arc seal (22) and the pipe end (Pa). Ingredients.
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CN107940134A (en) * 2017-11-27 2018-04-20 周福义 A kind of hermetically sealed blind flange
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