JP4056658B2

JP4056658B2 - Divided gate head differential pressure double-sided seal structure and divided gate equipped with this seal structure

Info

Publication number: JP4056658B2
Application number: JP21623299A
Authority: JP
Inventors: 信芳大橋; 昭緒田面; 正樹原; 精喜恵美; 吉博門田; 芳敬竹井
Original assignee: Hitachi Zosen Corp; Mutsubushi Rubber Co Ltd
Current assignee: Hitachi Zosen Corp; Mutsubushi Rubber Co Ltd
Priority date: 1999-07-30
Filing date: 1999-07-30
Publication date: 2008-03-05
Anticipated expiration: 2019-07-30
Also published as: JP2001040644A

Description

【０００１】
【発明の属する技術分野】
本発明は、上下に分割されたゲートにおける水頭差圧両面シール構造、及び、このシール構造を備えた分割ゲートに関するものである。
【０００２】
【従来の技術】
例えばスイミングプール型原子炉のプールは、図８に示すように、原子炉プール１と使用済燃料プール２とにゲート３によって仕切られている。そして、このゲート３はゲート３を吊上げる天井走行クレーンの揚程の関係で、上部ゲート３ａと下部ゲート３ｂの二つに分割されている。
【０００３】
ところで、原子炉の通常運転時においては、原子炉プール１の水位が使用済燃料プール２の水位より高く、前記ゲート３には原子炉プール側より両プールの水頭差圧が作用する。また、原子炉プール１内に設置されている設備や実験機器の保守点検時においては、必要に応じて原子炉プール１の水位を低下させるため、使用済燃料プール２の水位より原子炉プール１の水位が低くなる場合がある。このような場合には、前記ゲート３への水頭差圧の作用方向は反転する。このため、前記ゲートは、図９に示すように、上部ゲート３ａは両側と下面側の表裏面に、また、下部ゲート３ｂは両側と上下面側の表裏面に夫々パッキン４を設けた、水頭差圧による両面シール構造となっている。
【０００４】
【発明が解決しようとする課題】
しかしながら、上部ゲート３ａの両側の表裏面に、また、下部ゲート３ｂの両側と下面側の表裏面に設けたパッキン４はボルトによって上部ゲート３ａや下部ゲート３ｂに取付けているが、ボルトの締付けトルクの管理は難しく、設置時、パッキン４には戸溝とのシール面に凹凸が発生し、被シール面に蛇行が生じる。従来は、パッキン４の「首振り」ができない構造のため、シール面に凹凸が生じると、パッキン圧縮量にムラができ、シール力の強弱になって水漏れが発生しやすくなる。
【０００５】
また、上部ゲート３ａの下端側と、下部ゲート３ｂの上端側に設置する、ゲート３の上下分割部のパッキン４が蛇行すると、図１０に示すように、上部ゲート３ａの下端側と、下部ゲート３ｂの上端側に取付けられたパッキン４間で芯ずれが起こり、水漏れが発生する。
【０００６】
本発明は、上記した従来の問題点に鑑みてなされたものであり、分割ゲートのパッキン部での水漏れを可及的に防止できる水頭差圧両面シール構造、及び、このシール構造を備えた分割ゲートを提供することを目的としている。
【０００７】
【課題を解決するための手段】
上記した目的を達成するために、本発明の分割ゲート水頭差圧両面シール構造は、上部ゲートと下部ゲートに分割された各ゲートの表裏面に、パッキン押え板を介してボルトで取付けられるパッキンの、前記ボルトの嵌入孔にスペーサを設けると共に、前記パッキン押え板の取付け部におけるパッキンの表裏面のうちの少なくともどちらか一方にシール突起を設けたり、下部ゲートの両側に取付けるパッキンの上部に、上部ゲートの両側に取付けるパッキンとの位置決め用ゴムピンを突設すると共に、下部ゲートの上面には、単包性スポンジゴムのパッキンを取付け、上部ゲートの下面側にはパッキンを取付けないこととしている。そして、このようにすることで、ゲートの締切り時、取付け後のパッキンの蛇行を防止できたり、上部ゲートの表裏面パッキンと下部ゲートの表裏面パッキンとの不連続及びこれらのパッキンと下部ゲートの上面に取付けるパッキンとの不連続が防止され、パッキンの面圧を均一にできるようになって、パッキン部での水漏れが防止できるようになる。
【０００８】
また、本発明の分割ゲートは、上記した本発明のシール構造を備えた分割ゲートにおいて、上部ゲートと下部ゲートの表裏面に取付けられるパッキンの近傍に、パッキンの潰れ代を調整可能な支圧板を取付けたり、上部ゲートの下面と下部ゲートの上面の、どちらか一方にピンを、他方にはこのピンの嵌入受け部材を設け、かつ、上部ゲート及び下部ゲートの上面に設置する吊金具を、ゲートの表裏面方向への調整移動が可能なようにしたり、上部ゲートや下部ゲートの両側にサイドシューを取付けたり、下部ゲートの底面に取付けるローラを２列にしたり、上部ゲートや下部ゲートの下面両側に、上部ゲートや下部ゲートの表裏面方向に９０度反転が可能な起伏治具を設置できる構成とすることとしている。そして、このようにすることで、パッキンの初期潰れ代を調整できたり、上部ゲートと下部ゲートとの相対位置が確定できたり、ゲートを垂直に吊下げた状態で戸溝へ挿入できるようになったり、戸溝シール位置の再現性を確保できるようになったり、ゲートの自立性が向上し、ゲートの移動がスムーズになったりして、パッキンからの漏れを確実に防止できる。また、ゲートの点検保守作業時、ゲートを水平に倒す作業が容易に行えるようになる。
【０００９】
【発明の実施の形態】
本発明の第１の分割ゲート水頭差圧両面シール構造は、上部ゲートと下部ゲートに分割された各ゲートの表裏面に、パッキン押え板を介してボルトで取付けられるパッキンの、前記ボルトの嵌入孔にスペーサを設けると共に、前記パッキン押え板の取付け部における前記パッキンの表裏面のうちの少なくともどちらか一方にシール突起を設けたものである。このようにすることで、パッキンの締付力の均一化が容易となり、取付け後のパッキンの蛇行を防止できる。
【００１０】
また、上記第１の本発明の分割ゲート水頭差圧両面シール構造において、パッキンの取付け部における背面側にパッキン座を、パッキンのシール部における背面側にバックアップ座を設けると共に、バックアップ座には通水孔を設ければ、パッキン背面側に水圧が作用してパッキンを押える面圧が大きくなる。これが本発明の第２の分割ゲート水頭差圧両面シール構造である。
【００１１】
また、本発明の第３の分割ゲート水頭差圧両面シール構造は、下部ゲートの両側に取付けるパッキンの上部に、上部ゲートの両側に取付けるパッキンとの位置決め用ゴムピンを突設すると共に、下部ゲートの上面には、単包性スポンジゴムのパッキンを取付け、上部ゲートの下面側にはパッキンを取付けないものである。位置決め用ゴムピンの作用により、上部ゲートの両側に取付けるパッキンと下部ゲートの両側に取付けるパッキンとの不連続及びこれらのパッキンと下部ゲートの上面に取付けるパッキンとの不連続が防止され、また、上部ゲートと下部ゲート間とのシールを下部ゲートに取付けた単包性スポンジゴムのパッキンによって行うことで、低荷重で大きな撓みを得ると共に、パッキンの接触幅を一定にできる。
【００１２】
この本発明の第３の分割ゲート水頭差圧両面シール構造を、上記第１及び第２の分割ゲート水頭差圧両面シール構造と組み合せることもできる。これが本発明の第４の分割ゲート水頭差圧両面シール構造である。
【００１３】
本発明の第１の分割ゲートは、上記した本発明の分割ゲート水頭差圧両面シール構造を有すると共に、両ゲートの表裏面に取付けられるパッキンの近傍には、パッキンの潰れ代を調整可能な支圧板を取付けたものである。この支圧板によりパッキンの初期潰れ代を調整し、パッキンへの初期押付力を設定することができる。支圧板が戸溝に当たると、それ以上の水頭圧差は全て支圧板に支持される。従って、パッキンには初期潰れ代とセルフシール分だけが作用し、必要以上の荷重はかからず、上下ゲートの両側に取付けるパッキンの径を小さくすることができる。
【００１４】
また、本発明の第２の分割ゲートは、上記した本発明の分割ゲート水頭差圧両面シール構造を有すると共に、上部ゲートの下面と下部ゲートの上面の、どちらか一方にピンを、他方にはこのピンの嵌入受け部材を設け、かつ、上部ゲート及び下部ゲートの上面に設置する吊金具を、ゲートの表裏面方向への調整移動が可能なようにしたものである。これらピンと嵌入受け部材により上部ゲートと下部ゲートの相対位置が確定されると共に、吊金具を、ゲートの表裏面方向への調整移動が可能なようにすることで、ゲート吊上げ時の安定性が良くなり、パッキンの損傷を防ぐことができる。
【００１５】
上記本発明の第１の分割ゲートと、本発明の第２の分割ゲートを組み合わせることも可能である。これが本発明の第３の分割ゲートである。
【００１６】
また、本発明の第４の分割ゲートは、上記した本発明の第１〜第３のいずれかの分割ゲートにおける、上部ゲート及び下部ゲートの両側に、戸溝シール位置の再現性を確保するサイドシューを取付けたものである。このサイドシューにより戸溝シール位置の再現性が確保できると共に、サイドシューの板厚を調整することにより、ゲート垂直度の微調整が可能になる。
【００１７】
また、本発明の第５の分割ゲートは、上記した本発明の第１〜第４のいずれかの分割ゲートにおける、下部ゲートの底面におけるゲート幅方向に複数個、回転が自在なように取付けたローラを、ゲート厚さ方向に２列としたものである。ローラをゲート厚さ方向に２列とすることによって、ゲートの自立性が向上すると共に、各ローラにかかる荷重が小さくなり、水圧の作用方向が変化した場合のゲートの移動がスムーズに行えるようになる。
【００１８】
また、本発明の第６の分割ゲートは、上記した本発明の分割ゲート水頭差圧両面シール構造を有すると共に、上部ゲートや下部ゲートの下面両側に、上部ゲートや下部ゲートの表裏面方向に９０度反転が可能なころを、設置可能な構成としたものである。上部ゲートや下部ゲートの下面両側に、ゲートの表裏面方向に９０度反転が可能なころを設置できるように構成することで、ゲートの点検保守作業時、ゲートを水平に倒す作業が容易に行えるようになる。
【００１９】
上記本発明の第１〜第５の分割ゲートと、本発明の第６の分割ゲートを組み合わせることも可能である。これが本発明の第７の分割ゲートである。
【００２０】
【実施例】
以下、本発明の分割ゲート水頭差圧両面シール構造を図１〜図３に示す一実施例に基づいて説明し、かつ、この本発明の分割ゲート水頭差圧両面シール構造を備えた本発明の分割ゲートを図４〜図７に示す一実施例に基づいて説明する。
図１は本発明の第１の分割ゲート水頭差圧両面シール構造を説明する図で、（ａ）は下部ゲートの下方中央部を断面して示す斜視図、（ｂ）はパッキンの斜視図、図２は本発明の第２の分割ゲート水頭差圧両面シール構造を説明する図で、（ａ）は下部ゲートの下方コーナ部の正面図、（ｂ）は（ａ）の側面図、図３は本発明の第３，４の分割ゲート水頭差圧両面シール構造を説明する要部斜視図、図４は本発明の分割ゲートを構成する上部ゲートを説明する図で、（ａ）は側面図、（ｂ）は一部切欠いて示す正面図、（ｃ）は吊金具の取付け部の拡大図、図５は本発明の分割ゲートを構成する下部ゲートを説明する図で、（ａ）は側面図、（ｂ）は一部切欠いて示す正面図、（ｃ）は吊金具の取付け部の拡大図、図６は本発明の分割ゲートのパッキン近傍に取付ける支圧板の説明図で、（ａ）はゲートを正面から見た図、（ｂ）は支圧板取付け部の拡大図、（ｃ）は（ｂ）の他の実施例図、図７は本発明の分割ゲートを構成する下部ゲートの点検保守時における傾転要領を説明する図である。
【００２１】
図１〜図３において、１１は上部ゲート３ａと下部ゲート３ｂの表裏面に取付けられる断面Ｐ字状の天然ゴム製（硬さ：ＪＩＳ−Ａ、Ｈｓ４０〜９０）パッキンであり、図１（ａ）に示すように、パッキン１１の取付け部における背面側にはパッキン座１７を、パッキン１１のシール部における背面側にはバックアップ座１２を配置している。
【００２２】
ところで、前記パッキン１１におけるボルト１５の嵌入孔１１ｂには、図１（ａ）に示すように、前記嵌入孔１１ｂと同じ高さのスペーサ１６が設けられ、このスペーサ１６により、ボルト１５の締め過ぎを防止して取付け後のパッキン１１の蛇行を防止すると共に、パッキン１１の締付力の均一化を容易に行えるものを示している。
【００２３】
また、前記パッキン１１は、上部ゲート３ａと下部ゲート３ｂの表裏面に、図１（ａ）や図２に示すように、パッキン押え板１４を介してボルト１５で取付けられるが、本発明では、このパッキン１１の、パッキン押え板１４の取付け部例えば表裏面に、図１（ｂ）に示すように、シール突起１１ａを設けてパッキン１１の締付力をこのシール突起１１ａに集中させ、高いシール性を確保するようにしている。本実施例ではパッキン１１の表裏面にシール突起１１ａを設けたものを示したが、片側にのみシール突起１１ａを設けたものでも良い。但し、片側にのみシール突起１１ａを設けたものでは、シール突起のないパッキン面とパッキン押え板との間のシール性が減少する。
【００２４】
また、前記バックアップ座１２には、図２（ｂ）に示すように、通水孔１２ａを設け、パッキン１１の背面側に水圧を作用させるものを示している。このようにすることで、パッキン１１を押え付ける面圧が大きくなり、漏れを防止する効果が増大する。
【００２５】
１８は下部ゲート３ｂの両側に取付けるパッキン１１の上端中空部に、図３に示すように、突設する位置決め用ゴムピン（硬さ：ＪＩＳ−Ａ、Ｈｓ４０〜９０）であり、ゲートの締切り時、上部ゲート３ａの両側に取付けるパッキン１１との位置決めを行い、側面に設けたパッキン１１と後述する分割部に設けたパッキン１９との不連続を防止するものである。
【００２６】
１９は上部ゲート３ａと下部ゲート３ｂの分割部、すなわち、上部ゲート３ａの下面と下部ゲート３ｂの上面間のシールを行うパッキンであり、低荷重で撓んで潰れ代を大きくとることができるように、穴同士がつながっていない、単包性スポンジゴムを採用している。本発明では、このパッキン１９を、図３に示すように、下部ゲート３ｂの上面にのみ取付け、上部ゲート３ａの下面側には取付けないようにして、ゴムと金属板との接触により止水する構造を採用している。
【００２７】
この単包性スポンジゴム（硬さ：アスカーＣ、５〜５０）からなるパッキン１９は、図３に示す実施例では、パッキン取付け座２０の上に載せた、例えば硬さ、ＪＩＳ−Ａ、Ｈｓ３０〜８０のシリコンゴム製のパッキン台座２１の上面に接着したものを示している。そして、図３に示す実施例では、ゲートの締切り時、パッキン１９が過剰に押し潰されないように、パッキン１９の押し潰される量を規制する規制板２２を取付けたものを示している。このようにすることで、パッキン１９はパッキン台座２１に接着し、パッキン台座２１をボルト１３で締め付けたことによりパッキン１９の面の凹凸がなくなる。
【００２８】
本発明の分割ゲート水頭差圧両面シール構造は上記した構成を採用することで、ゲートの締切り時、取付け後のパッキン１１の蛇行を防止できたり、下部ゲート３ｂの上部に取付けたピン３４及び上部ゲート３ａの両側に取付ける位置決め用ゴムピン１８により、上部ゲート３ａと下部ゲート３ｂとの相対位置が確定され、上部ゲート３ａのパッキン１１と下部ゲート３ｂのパッキン１１との不連続及びパッキン１１とパッキン１９との不連続が防止され、パッキン１９の面圧を均一にできるようになって、パッキン１１，１９部での水漏れが防止できるようになる。
【００２９】
本発明の分割ゲート水頭差圧両面シール構造は、上記した実施例に限らず、上下のゲート３ａ，３ｂの表裏面に取付けられるパッキン１１の、ボルト１５の嵌入孔１１ｂにスペーサ１６を設けると共に、パッキン押え板１４の取付け部にシール突起１１ａを設けただけのもの、或いは、これらのバックアップ座１２に通水孔１２ａを設けたものでも良い。
【００３０】
また、下部ゲート３ｂの両側に取付けるパッキン１１の上部に、上部ゲート３ａの両側に取付けるパッキン１１との位置決め用ゴムピン１８を突設すると共に、下部ゲート３ｂの上面には、単包性スポンジゴムのパッキン１９を取付け、上部ゲート３ａの下面側にはパッキン１１を取付けない構成を採用しただけのものでも良い。
【００３１】
すなわち、これら各部において本発明の構成を採用することで、各部におけるシール性が良好になる。従って、本実施例のように、全ての部分を本発明の構成とすることで、シール性は最良になる。
【００３２】
次に、本発明の分割ゲートを図４〜図７に示す一実施例に基づいて説明する。
図４〜図７において、３１は本発明の分割ゲートを構成する上部ゲート、３２は同じく下部ゲートであり、これらの上部ゲート３１及び下部ゲート３２の表裏面は上記した本発明の分割ゲート水頭差圧両面シール構造を備えている。
【００３３】
３３は前記した上部ゲート３１及び下部ゲート３２の表裏面に取付けられるパッキン１１の近傍に、例えば図６（ａ）に示すように、適宜の間隔を存して表裏面にそれぞれ１２個ずつ設置した支圧板であり、この支圧板３３によりパッキン１１の初期潰れ代Ｌを調整し、パッキン１１への初期押付力を設定できる。パッキン１１には初期潰れ代Ｌとセルフシール分だけが作用し、必要以上の荷重はかからず、断面Ｐ字状のパッキン１１の高さ、すなわち、頭部の径を小さくすることができる。なお、支圧板３３は、パッキン１１の初期潰れ代を調整できるものであれば、図６（ｂ）に示した単なる板状のものであっても、また、図６（ｃ）に示したように、先端側を折り曲げた形状でビス４０に荷重がかからない構造であっても良い。
【００３４】
このような構成とすることで、ゲートの戸溝に凹凸があった場合にも、現場で調整が行えるようになる。さらに、パッキン１１の初期潰れ代を最適に調整することによって、パッキン１１からの漏れを効果的に防止することができる。
【００３５】
３４は図５（ａ）（ｂ）に示すように、下部ゲート３２の上面両側に例えば２個突設したピン、３５は図４（ｂ）に示すように、上部ゲート３１の下面における、前記ピン３４の突設位置に設置された嵌入受け部材であり、本発明の分割ゲートの据付時、これらピン３４が嵌入受け部材３５内に嵌入することによって上部ゲート３１と下部ゲート３２の相対位置が確定され、上部ゲート３１と下部ゲート３２の芯ずれが防止できる。なお、本実施例では下部ゲート３２にピン３４を、上部ゲート３１に嵌入受け部材３５を設けたものを示したが、上部ゲート３１にピン３４を、下部ゲート３２に嵌入受け部材３５を設けたものでも良い。
【００３６】
３６は図４及び図５の（ｂ）（ｃ）に示すように、上部ゲート３１及び下部ゲート３２の上面に設置する吊金具であり、例えば取付け孔３６ａを長孔として、上部ゲート３１及び下部ゲート３２の表裏面方向への調整移動が可能なようになされている。このようにすることで、ゲートの吊位置と重心位置が一直線上となって、ゲート吊上げ時の安定性が良くなり、ゲートを垂直に吊上げた状態で、戸溝への挿入引き抜き作業を行うことができるようになる。従って、作業時のパッキン１１の損傷が防止でき、かつ、上部ゲート３１と下部ゲート３２の芯ずれを防止することができる。
【００３７】
なお、本実施例では、吊金具３６に設けた取付け孔３６ａを長孔として、上部ゲート３１及び下部ゲート３２の表裏面方向への調整移動が可能なものを示したが、上部ゲート３１及び下部ゲート３２に設ける取付け孔を長孔としてもよく、また、上部ゲート３１及び下部ゲート３２に、表裏面方向に複数の取付け孔を設けたものでもよい。
【００３８】
４１は上部ゲート３ａ及び下部ゲート３ｂの例えば両側上下に取付けたサイドシューであり、このサイドシュー４１により戸溝シール位置の再現性が確保できると共に、サイドシュー４１の板厚を調整することにより、ゲートの垂直度の微調整が可能になる。
【００３９】
４２は下部ゲート３ｂの底面に、ゲート幅方向に例えば３連に配置したものを複数個、回転が自在なように取付けたローラであり、ゲート３の表裏面で水圧差が生じた時、水圧の作用する方向にゲート３を移動させるためのものである。本実施例では、このローラ４２を、従来の１列に対して、図１（ａ）に示すように、ゲート厚さ方向に２列としている。このようにすることで、従来のゲートに対して、ゲート３の自立性が向上すると共に、各ローラ４２にかかる荷重が小さくなり、水圧の作用方向が変化した場合のゲートの移動がスムーズに行えるようになる。
【００４０】
３７はゲートの点検保守作業時、上部ゲート３１や下部ゲート３２の下面両側に取付ける起伏治具、例えばころであり、このころ３７を回転自在に取付けた台車３８を上部ゲート３１や下部ゲート３２に枢着し、ころ３７が上部ゲート３１や下部ゲート３２の表裏面方向に９０度反転が可能なようにしている。このように構成することで、例えば図７に示すように、下部ゲート３２を水平に倒す作業が容易に行えるようになる。従って、この傾転時、下部ゲート３２の表裏面に取付けたパッキン１１を損傷することも可及的に減少する。なお、図７中の３９は傾転時、下部ゲート３２の下に敷く盤木である。
【００４１】
本発明の分割ゲートは、上記した実施例に限らず、本発明の分割ゲート水頭差圧両面シール構造と支圧板３３を設置しただけのものや、本発明の分割ゲート水頭差圧両面シール構造と、ピン３４と嵌入受け部材３５、及び、吊金具３６を上部ゲート３１及び下部ゲート３２の表裏面方向へ調整移動が可能なように設置しただけのものや、本発明の分割ゲート水頭差圧両面シール構造と、上部ゲート３１や下部ゲート３２の下面両側に、上部ゲート３１や下部ゲート３２の表裏面方向に９０度反転が可能なころ３７を取付けができるように構成しただけのもの、或いは、これらを適宜組み合わせたものであっても良い。
【００４２】
【発明の効果】
以上説明したように、本発明の分割ゲート水頭差圧両面シール構造によれば、ゲートの締切り時、取付け後のパッキンの蛇行を防止できたり、上下ゲートの表裏面パッキンの不連続及びこれらのパッキンと上下のゲート間に位置するパッキンとの不連続を防止し、パッキンの面圧を均一にできるようになる。従って、パッキン部での水漏れを効果的に防止できる。
【００４３】
また、本発明の分割ゲートによれば、パッキンからの漏れを確実に防止できたり、ゲートの吊下げを安定した状態で行えるようになったり、戸溝シール位置の再現性が確保できるようになったり、ゲートの自立性が向上すると共に、各ローラにかかる荷重が小さくなり、水圧の作用方向が変化した場合のゲートの移動がスムーズに行えるようになったり、ゲートの点検保守作業時、ゲートを水平に倒す作業が容易に行えるようになって、ゲートの傾転時におけるパッキンの損傷を可及的に減少することができる。
【図面の簡単な説明】
【図１】本発明の第１の分割ゲート水頭差圧両面シール構造を説明する図で、（ａ）は下部ゲートの下方中央部を断面して示す斜視図、（ｂ）はパッキンの斜視図である。
【図２】本発明の第２の分割ゲート水頭差圧両面シール構造を説明する図で、（ａ）は下部ゲートの下方コーナ部の正面図、（ｂ）は（ａ）の側面図である。
【図３】本発明の第３，４の分割ゲート水頭差圧両面シール構造を説明する要部斜視図である。
【図４】本発明の分割ゲートを構成する上部ゲートを説明する図で、（ａ）は側面図、（ｂ）は一部切欠いて示す正面図、（ｃ）は吊金具の取付け部の拡大図である。
【図５】本発明の分割ゲートを構成する下部ゲートを説明する図で、（ａ）は側面図、（ｂ）は一部切欠いて示す正面図、（ｃ）は吊金具の取付け部の拡大図である。
【図６】本発明の分割ゲートのパッキン近傍に取付ける支圧板の説明図で、（ａ）はゲートを正面から見た図、（ｂ）は支圧板取付け部の拡大図、（ｃ）は（ｂ）の他の実施例図である。
【図７】本発明の分割ゲートを構成する下部ゲートの点検保守時における傾転要領を説明する図である。
【図８】スイミングプール型原子炉の炉心を浸漬して放射線を遮蔽するプールの説明図である。
【図９】スイミングプール型原子炉の炉心を浸漬して放射線を遮蔽するプールに設置される二分割ゲートの説明図で、（ａ）は側面図、（ｂ）は正面図である。
【図１０】上部ゲートの下端側と、下部ゲートの上端側に取付けられたパッキン間で芯ずれが起こった場合の説明図である。
【符号の説明】
３ａ上部ゲート
３ｂ下部ゲート
１１パッキン
１１ａシール突起
１１ｂ嵌入孔
１２バックアップ座
１２ａ通水孔
１４パッキン押え板
１５ボルト
１６スペーサ
１７パッキン座
１８位置決め用ゴムピン
１９単包性スポンジゴムのパッキン
３１上部ゲート
３２下部ゲート
３３支圧板
３４ピン
３５嵌入受け部材
３６吊金具
３７ころ
３８台車
３９盤木
４０ビス
４１サイドシュー
４２ローラ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydrohead differential pressure double-sided seal structure in a vertically divided gate, and a divided gate provided with this seal structure.
[0002]
[Prior art]
For example, a swimming pool type reactor pool is partitioned by a gate 3 into a reactor pool 1 and a spent fuel pool 2 as shown in FIG. And this gate 3 is divided | segmented into two, the upper gate 3a and the lower gate 3b, by the relationship of the head of the overhead traveling crane which lifts the gate 3. FIG.
[0003]
By the way, during the normal operation of the nuclear reactor, the water level in the nuclear reactor pool 1 is higher than the water level in the spent fuel pool 2, and the water head differential pressure of both pools acts on the gate 3 from the nuclear reactor pool side. In addition, during the maintenance and inspection of the equipment and experimental equipment installed in the reactor pool 1, the reactor pool 1 is lowered from the level of the spent fuel pool 2 in order to lower the water level of the reactor pool 1 as necessary. The water level may be low. In such a case, the direction of action of the hydraulic head differential pressure on the gate 3 is reversed. For this reason, as shown in FIG. 9, the upper gate 3a is provided with packings 4 on both sides and lower and upper surfaces, and the lower gate 3b is provided with packings 4 on both sides and upper and lower surfaces. It has a double-sided seal structure with differential pressure.
[0004]
[Problems to be solved by the invention]
However, the packings 4 provided on the front and back surfaces on both sides of the upper gate 3a and on both the front and back surfaces of the lower gate 3b are attached to the upper gate 3a and the lower gate 3b with bolts. This is difficult to manage, and during installation, the packing 4 has irregularities on the sealing surface with the door groove, and the surface to be sealed meanders. Conventionally, since the packing 4 cannot be “swinged”, if the sealing surface has irregularities, the packing compression amount becomes uneven, the sealing force becomes strong and water leakage tends to occur.
[0005]
When the packing 4 of the upper and lower divided parts of the gate 3 installed on the lower end side of the upper gate 3a and the upper end side of the lower gate 3b meanders, as shown in FIG. 10, the lower end side of the upper gate 3a and the lower gate Misalignment occurs between the packings 4 attached to the upper end side of 3b, and water leakage occurs.
[0006]
The present invention has been made in view of the above-described conventional problems, and includes a water head differential pressure double-sided seal structure that can prevent water leakage at the packing portion of the split gate as much as possible, and the seal structure. It aims to provide a split gate.
[0007]
[Means for Solving the Problems]
In order to achieve the above-described object, the split gate head differential pressure double-sided seal structure of the present invention has a packing attached to the front and back surfaces of each gate divided into an upper gate and a lower gate with bolts via a packing presser plate. front provided with a spacer insertion hole of Kibo belt, or providing a seal projection on at least either of the front and back surfaces of the packing in the mounting portion of the packing gland plate, the upper portion of the packing mounting on both sides of the lower gate A rubber pin for positioning with the packing attached to both sides of the upper gate is projected, and a single-packed sponge rubber packing is attached to the upper surface of the lower gate, and no packing is attached to the lower surface side of the upper gate. . In this way, when the gate is shut off, it is possible to prevent the meandering of the packing after mounting, the discontinuity between the front and back packing of the upper gate and the front and back packing of the lower gate, and the packing and lower gate. Discontinuity with the packing attached to the upper surface is prevented, the surface pressure of the packing can be made uniform, and water leakage at the packing portion can be prevented.
[0008]
Further, the divided gate of the present invention is a divided gate having the above-described seal structure of the present invention, wherein a bearing plate capable of adjusting the crushing margin of the packing is provided in the vicinity of the packing attached to the front and back surfaces of the upper gate and the lower gate. A pin is attached to either the lower surface of the upper gate or the upper surface of the lower gate, and a fitting receiving member for this pin is provided on the other, and a hanging fitting to be installed on the upper surface of the upper gate and the lower gate is attached to the gate. Can be adjusted and moved in the front and back direction, side shoes are attached to both sides of the upper and lower gates, two rollers are attached to the bottom of the lower gate, and both lower surfaces of the upper and lower gates In addition, an undulation jig capable of turning 90 degrees in the front and back direction of the upper gate and the lower gate can be installed. By doing this, the initial crushing allowance of the packing can be adjusted, the relative position between the upper gate and the lower gate can be determined, and the gate can be inserted into the door groove with the gate suspended vertically. In addition, the reproducibility of the door groove seal position can be ensured, the gate self-supporting property is improved, and the gate moves smoothly, so that leakage from the packing can be surely prevented. In addition, when the gate is inspected and maintained, the gate can be easily tilted horizontally.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
First divided gate water head difference圧両face seal structure of the present invention, the front and back surfaces of each gate divided into upper gate and lower gate, packing mounted with bolts through the gland plate, before Kibo belt provided with a spacer insertion hole, it is provided with a seal projection on at least either of the front and back surfaces of the packing in the mounting portion of the gland plate. By doing so, it becomes easy to make the packing tightening force uniform, and the packing can be prevented from meandering.
[0010]
In the split gate hydraulic head differential pressure double-sided seal structure according to the first aspect of the present invention, a packing seat is provided on the back side of the packing mounting portion, a backup seat is provided on the back side of the packing sealing portion, and the backup seat is passed through. If a water hole is provided, the water pressure acts on the back side of the packing to increase the surface pressure for pressing the packing. This is the second split gate head differential pressure double-sided seal structure of the present invention.
[0011]
The third split gate hydraulic head differential pressure double-side seal structure of the present invention has a rubber pin for positioning with the packing attached on both sides of the upper gate on the upper part of the packing attached on both sides of the lower gate, A single-packed sponge rubber packing is attached to the upper surface, and no packing is attached to the lower surface side of the upper gate. Due to the action of the positioning rubber pins, discontinuity between the packing attached to both sides of the upper gate and the packing attached to both sides of the lower gate and the discontinuity between these packings and the packing attached to the upper surface of the lower gate are prevented. By sealing with a single-packed sponge rubber attached to the lower gate between the lower gate and the lower gate, a large deflection can be obtained with a low load, and the contact width of the packing can be made constant.
[0012]
The third divided gate head differential pressure double-sided seal structure of the present invention can be combined with the first and second divided gate head differential pressure double-sided seal structures. This is the fourth split gate head differential pressure double-sided seal structure of the present invention.
[0013]
The first divided gate of the present invention has the above-described divided gate head differential pressure double-sided seal structure of the present invention, and a support capable of adjusting the crushing allowance of the packing in the vicinity of the packing attached to the front and back surfaces of both gates. A pressure plate is attached. With this pressure plate, the initial crushing allowance of the packing can be adjusted, and the initial pressing force against the packing can be set. When the bearing plate hits the doorway, all further head pressure differences are supported by the bearing plate. Accordingly, only the initial crushing allowance and the self-sealing amount act on the packing, and an unnecessary load is not applied, and the diameter of the packing attached to both sides of the upper and lower gates can be reduced.
[0014]
Further, the second divided gate of the present invention has the above-described divided gate head differential pressure double-sided seal structure of the present invention, and has a pin on one of the lower surface of the upper gate and the upper surface of the lower gate, and the other on the other. This pin insertion receiving member is provided, and the hanging metal fittings installed on the upper surfaces of the upper gate and the lower gate can be adjusted and moved in the direction of the front and back surfaces of the gate. The relative position of the upper gate and lower gate is determined by these pins and the fitting receiving member, and the hanging bracket can be adjusted and moved in the direction of the front and back surfaces of the gate, thereby improving the stability when lifting the gate. Thus, damage to the packing can be prevented.
[0015]
It is also possible to combine the first divided gate of the present invention and the second divided gate of the present invention. This is the third divided gate of the present invention.
[0016]
Further, the fourth divided gate of the present invention is a side which ensures reproducibility of the door groove seal position on both sides of the upper gate and the lower gate in any of the first to third divided gates of the present invention described above. A shoe is attached. With this side shoe, reproducibility of the door groove seal position can be ensured, and by adjusting the thickness of the side shoe, the gate perpendicularity can be finely adjusted.
[0017]
A plurality of fifth divided gates of the present invention are attached so as to be freely rotatable in the gate width direction on the bottom surface of the lower gate in any of the first to fourth divided gates of the present invention described above. Two rollers are arranged in the gate thickness direction. By making the rollers in two rows in the gate thickness direction, the self-supporting property of the gate is improved, the load applied to each roller is reduced, and the gate can be moved smoothly when the direction of water pressure changes. Become.
[0018]
In addition, the sixth divided gate of the present invention has the above-described divided gate head differential pressure double-sided seal structure of the present invention, and 90 on both sides of the lower surface of the upper gate and the lower gate, in the front and rear surfaces of the upper gate and the lower gate. The roller capable of reversing the degree is configured to be installable. By constructing rollers that can be rotated 90 degrees in the direction of the front and back of the gate on both sides of the lower surface of the upper and lower gates, it is easy to tilt the gate horizontally during gate inspection and maintenance. It becomes like this.
[0019]
It is also possible to combine the first to fifth divided gates of the present invention and the sixth divided gate of the present invention. This is the seventh divided gate of the present invention.
[0020]
【Example】
Hereinafter, the split gate hydraulic head differential pressure double-sided seal structure of the present invention will be described based on one embodiment shown in FIGS. 1 to 3, and the split gate hydraulic head differential pressure double-sided seal structure of the present invention is provided. The divided gate will be described based on one embodiment shown in FIGS.
FIG. 1 is a diagram for explaining a first split gate hydraulic head differential pressure double-sided seal structure according to the present invention, wherein (a) is a perspective view showing a lower central portion of a lower gate in section, (b) is a perspective view of a packing, 2A and 2B are views for explaining a second split gate head differential pressure double-sided seal structure according to the present invention. FIG. 2A is a front view of a lower corner portion of the lower gate, FIG. 2B is a side view of FIG. FIG. 4 is a perspective view of a main part for explaining the third and fourth divided gate head differential pressure double-sided seal structure of the present invention, FIG. 4 is a diagram for explaining an upper gate constituting the divided gate of the present invention, and FIG. (B) is a partially cutaway front view, (c) is an enlarged view of a mounting part of a hanging metal fitting, FIG. 5 is a view for explaining a lower gate constituting the divided gate of the present invention, (a) is a side view. (B) is a partially cutaway front view, (c) is an enlarged view of a mounting portion of a hanging bracket, and FIG. 6 is a divided gate according to the present invention. It is explanatory drawing of the bearing plate attached near packing, (a) is the figure which looked at the gate from the front, (b) is an enlarged view of the bearing plate attachment part, (c) is another Example figure of (b), figure 7 is a view for explaining the tilting procedure during inspection and maintenance of the lower gate constituting the divided gate of the present invention.
[0021]
1 to 3, reference numeral 11 denotes a natural rubber (hardness: JIS-A, Hs 40 to 90) packing having a P-shaped cross section which is attached to the front and back surfaces of the upper gate 3a and the lower gate 3b. ), A packing seat 17 is disposed on the back surface side of the mounting portion of the packing 11, and a backup seat 12 is disposed on the back surface side of the seal portion of the packing 11.
[0022]
By the way, as shown in FIG. 1A, a spacer 16 having the same height as the insertion hole 11 b is provided in the insertion hole 11 b of the bolt 15 in the packing 11, and the bolt 16 is overtightened by the spacer 16. It is possible to prevent the meandering of the packing 11 after mounting and to easily make the tightening force of the packing 11 uniform.
[0023]
In addition, the packing 11 is attached to the front and back surfaces of the upper gate 3a and the lower gate 3b with bolts 15 via a packing presser plate 14 as shown in FIG. 1 (a) and FIG. As shown in FIG. 1 (b), a seal protrusion 11a is provided on an attachment portion of the packing retainer plate 14, for example, the front and back surfaces of the packing 11, and the tightening force of the packing 11 is concentrated on the seal protrusion 11a. We are trying to ensure sex. In the present embodiment, the seal projection 11a is provided on the front and back surfaces of the packing 11, but the seal projection 11a may be provided only on one side. However, in the case where the seal protrusion 11a is provided only on one side, the sealing performance between the packing surface without the seal protrusion and the packing presser plate is reduced.
[0024]
Further, as shown in FIG. 2 (b), the backup seat 12 is provided with a water passage hole 12 a to apply water pressure to the back side of the packing 11. By doing in this way, the surface pressure which presses the packing 11 becomes large, and the effect which prevents a leak increases.
[0025]
Reference numeral 18 denotes a positioning rubber pin (hardness: JIS-A, Hs 40 to 90) which protrudes from the upper hollow portion of the packing 11 attached to both sides of the lower gate 3b as shown in FIG. Positioning with the packing 11 attached to both sides of the upper gate 3a is performed, and discontinuity between the packing 11 provided on the side surface and the packing 19 provided in a split portion to be described later is prevented.
[0026]
Reference numeral 19 denotes a packing portion for sealing the upper gate 3a and the lower gate 3b, that is, a seal between the lower surface of the upper gate 3a and the upper surface of the lower gate 3b. Adopted a single-packed sponge rubber with no holes connected. In the present invention, as shown in FIG. 3, the packing 19 is attached only to the upper surface of the lower gate 3b and not attached to the lower surface side of the upper gate 3a, and water is stopped by contact between the rubber and the metal plate. The structure is adopted.
[0027]
In the embodiment shown in FIG. 3, the packing 19 made of this single-packing sponge rubber (hardness: Asker C, 5 to 50) is placed on the packing mounting seat 20, for example, hardness, JIS-A, Hs30. It shows what is bonded to the upper surface of packing base 21 made of silicon rubber of ~ 80. In the embodiment shown in FIG. 3, a restriction plate 22 for restricting the amount of crushing of the packing 19 is attached so that the packing 19 is not crushed excessively when the gate is closed. By doing so, the packing 19 is bonded to the packing pedestal 21, and the packing pedestal 21 is fastened with the bolts 13, thereby eliminating the unevenness of the surface of the packing 19.
[0028]
The split gate hydraulic head differential pressure double-sided seal structure of the present invention adopts the above-described configuration, so that it is possible to prevent the packing 11 from being meandered when the gate is closed, or the pin 34 and the upper part attached to the upper part of the lower gate 3b. The positioning rubber pins 18 attached to both sides of the gate 3a determine the relative positions of the upper gate 3a and the lower gate 3b. The discontinuity between the packing 11 of the upper gate 3a and the packing 11 of the lower gate 3b and the packing 11 and the packing 19 Discontinuity is prevented, the surface pressure of the packing 19 can be made uniform, and water leakage at the packings 11 and 19 can be prevented.
[0029]
The split gate head differential pressure double-sided seal structure of the present invention is not limited to the above-described embodiment, and a spacer 16 is provided in the insertion hole 11b of the bolt 15 of the packing 11 attached to the front and back surfaces of the upper and lower gates 3a and 3b. It is also possible to provide the seal holding plate 14 with the seal protrusion 11a only on the attachment portion of the packing retainer plate 14, or to provide the back-up seat 12 with the water passage hole 12a.
[0030]
Further, rubber pins 18 for positioning with the packings 11 attached to both sides of the upper gate 3a are projected on the upper parts of the packings 11 attached to both sides of the lower gate 3b, and a single-packed sponge rubber is formed on the upper surface of the lower gate 3b. A structure in which the packing 19 is attached and a structure in which the packing 11 is not attached to the lower surface side of the upper gate 3a may be employed.
[0031]
That is, by adopting the configuration of the present invention in each of these parts, the sealing performance in each part is improved. Therefore, as in this embodiment, the sealing performance is best when all the portions are configured according to the present invention.
[0032]
Next, the divided gate of the present invention will be described based on one embodiment shown in FIGS.
4 to 7, reference numeral 31 denotes an upper gate constituting the divided gate of the present invention, and 32 denotes a lower gate. The upper and lower surfaces of the upper gate 31 and the lower gate 32 are the above-described divided gate hydraulic head differences of the present invention. It has a pressure double side seal structure.
[0033]
In the vicinity of the packing 11 attached to the front and back surfaces of the upper gate 31 and the lower gate 32 described above, for example, as shown in FIG. This is a pressure plate, and the initial crushing margin L of the packing 11 can be adjusted by the pressure plate 33 to set the initial pressing force to the packing 11. Only the initial crushing margin L and the self-sealing amount act on the packing 11, and an unnecessary load is not applied, and the height of the packing 11 having a P-shaped cross section, that is, the diameter of the head can be reduced. It should be noted that the bearing plate 33 may be a simple plate as shown in FIG. 6B as long as the initial crushing allowance of the packing 11 can be adjusted, or as shown in FIG. 6C. In addition, a structure in which a load is not applied to the screw 40 in a shape in which the tip side is bent may be used.
[0034]
By adopting such a configuration, even when the gate groove of the gate is uneven, it can be adjusted on site. Furthermore, the leakage from the packing 11 can be effectively prevented by adjusting the initial crushing margin of the packing 11 optimally.
[0035]
As shown in FIGS. 5 (a) and 5 (b), for example, two pins projecting from both sides of the upper surface of the lower gate 32, and 35 is the lower surface of the upper gate 31 as shown in FIG. 4 (b). This is a fitting receiving member installed at the projecting position of the pin 34. When the divided gate of the present invention is installed, the pin 34 is fitted into the fitting receiving member 35, so that the relative positions of the upper gate 31 and the lower gate 32 are changed. Thus, the misalignment between the upper gate 31 and the lower gate 32 can be prevented. In the present embodiment, the pin 34 is provided on the lower gate 32 and the insertion receiving member 35 is provided on the upper gate 31. However, the pin 34 is provided on the upper gate 31 and the insertion receiving member 35 is provided on the lower gate 32. Things can be used.
[0036]
As shown in FIGS. 4 and 5 (b) and 5 (c), 36 is a hanging bracket installed on the upper surface of the upper gate 31 and the lower gate 32. For example, the mounting hole 36a is a long hole and the upper gate 31 and the lower gate Adjustment movement in the front and back direction of the gate 32 is made possible. By doing so, the suspended position of the gate and the position of the center of gravity are in a straight line, the stability when the gate is lifted is improved, and the work of inserting and pulling out into the door groove is performed with the gate lifted vertically. Will be able to. Therefore, damage to the packing 11 during operation can be prevented, and misalignment between the upper gate 31 and the lower gate 32 can be prevented.
[0037]
In the present embodiment, the attachment hole 36a provided in the hanging bracket 36 is a long hole, and the upper gate 31 and the lower gate 32 can be adjusted and moved in the front and back direction. The mounting holes provided in the gate 32 may be long holes, or the upper gate 31 and the lower gate 32 may be provided with a plurality of mounting holes in the front and back direction.
[0038]
41 is a side shoe attached to, for example, the upper and lower sides of the upper gate 3a and the lower gate 3b. The side shoe 41 can ensure the reproducibility of the door groove seal position and adjust the plate thickness of the side shoe 41. Fine adjustment of the verticality of the gate becomes possible.
[0039]
Reference numeral 42 denotes a roller in which a plurality of, for example, three units arranged in the gate width direction are attached to the bottom surface of the lower gate 3b so as to be rotatable. When a water pressure difference occurs between the front and back surfaces of the gate 3, This is for moving the gate 3 in the direction of the action. In this embodiment, the rollers 42 are arranged in two rows in the gate thickness direction as shown in FIG. By doing so, the self-supporting property of the gate 3 is improved with respect to the conventional gate, the load applied to each roller 42 is reduced, and the gate can be moved smoothly when the direction of action of water pressure changes. It becomes like this.
[0040]
37 is an undulating jig, for example, a roller, which is attached to both sides of the lower surface of the upper gate 31 and the lower gate 32 at the time of inspection and maintenance work of the gate. A cart 38 to which the roller 37 is rotatably attached is attached to the upper gate 31 and the lower gate 32. The rollers 37 are pivotally attached so that the rollers 37 can be reversed 90 degrees in the front and back direction of the upper gate 31 and the lower gate 32. With this configuration, for example, as shown in FIG. 7, the operation of horizontally tilting the lower gate 32 can be easily performed. Therefore, damage to the packing 11 attached to the front and back surfaces of the lower gate 32 during this tilting is reduced as much as possible. Note that reference numeral 39 in FIG. 7 denotes a wood board laid under the lower gate 32 when tilting.
[0041]
The divided gate of the present invention is not limited to the above-described embodiment, and the divided gate head differential pressure double-side seal structure of the present invention and the support plate 33 are installed, or the split gate hydraulic head differential pressure double-side seal structure of the present invention is used. The pin 34, the fitting receiving member 35, and the hanging metal fitting 36 are simply installed so that they can be adjusted and moved in the front and back directions of the upper gate 31 and the lower gate 32, or the split gate hydraulic head differential pressure surface of the present invention. A seal structure and a structure in which rollers 37 that can be reversed 90 degrees in the front and back direction of the upper gate 31 and the lower gate 32 can be attached to both sides of the lower surface of the upper gate 31 and the lower gate 32, or These may be appropriately combined.
[0042]
【The invention's effect】
As described above, according to the split gate head differential pressure double-sided seal structure of the present invention, it is possible to prevent meandering of the packing after installation when the gate is cut off, discontinuity between the upper and lower gate packings of the upper and lower gates, and these packings. And discontinuity with the packing located between the upper and lower gates, and the surface pressure of the packing can be made uniform. Therefore, water leakage at the packing portion can be effectively prevented.
[0043]
Further, according to the divided gate of the present invention, leakage from the packing can be surely prevented, the suspension of the gate can be performed stably, and the reproducibility of the door groove seal position can be secured. In addition, the gate self-sustainability is improved and the load applied to each roller is reduced, so that the gate can move smoothly when the direction of water pressure changes. The horizontal tilting operation can be easily performed, and the damage to the packing when the gate is tilted can be reduced as much as possible.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram for explaining a first split gate hydraulic head differential pressure double-side seal structure according to the present invention, in which (a) is a perspective view showing a lower central portion of a lower gate in cross section, and (b) is a perspective view of a packing. It is.
FIGS. 2A and 2B are views for explaining a second split gate head differential pressure double-sided seal structure according to the present invention, wherein FIG. 2A is a front view of a lower corner portion of a lower gate, and FIG. 2B is a side view of FIG. .
FIG. 3 is a perspective view of an essential part for explaining third and fourth divided gate head differential pressure double-sided seal structures according to the present invention.
4A and 4B are diagrams for explaining an upper gate constituting the divided gate of the present invention, in which FIG. 4A is a side view, FIG. 4B is a partially cutaway front view, and FIG. FIG.
FIGS. 5A and 5B are diagrams illustrating a lower gate constituting the divided gate of the present invention, in which FIG. 5A is a side view, FIG. 5B is a partially cutaway front view, and FIG. FIG.
6A and 6B are explanatory views of a pressure bearing plate attached to the vicinity of the packing of the split gate of the present invention, in which FIG. 6A is a view of the gate as viewed from the front, FIG. 6B is an enlarged view of the pressure bearing plate mounting portion, and FIG. It is another Example figure of b).
FIG. 7 is a diagram illustrating a tilting procedure during inspection and maintenance of a lower gate constituting the divided gate of the present invention.
FIG. 8 is an explanatory diagram of a pool that shields radiation by immersing the core of a swimming pool type nuclear reactor.
[9] an explanatory view of a two-piece gate to be installed in the pool to shield radiation by immersing the core in a swimming pool reactor, is (a) is a side view, (b) is a positive plane view.
FIG. 10 is an explanatory diagram when misalignment occurs between packings attached to the lower end side of the upper gate and the upper end side of the lower gate.
[Explanation of symbols]
3a Upper gate 3b Lower gate 11 Packing 11a Seal projection 11b Insertion hole 12 Backup seat 12a Water passage hole 14 Packing plate 15 Bolt 16 Spacer 17 Packing seat 18 Rubber pin 19 for positioning Single packing sponge rubber packing 31 Upper gate 32 Lower gate 33 Supporting pressure plate 34 Pin 35 Insertion receiving member 36 Suspension bracket 37 Roller 38 Bogie 39 Board 40 Screw 41 Side shoe 42 Roller

Claims

The packing attached to the front and back surfaces of each gate divided into an upper gate and a lower gate with bolts via a packing presser plate,
Provided with a spacer insertion hole of the front Kibo belt,
A split gate head differential pressure double-side seal structure, wherein a seal protrusion is provided on at least one of the front and back surfaces of the packing at the mounting portion of the packing retainer plate.

2. The divided gate head difference according to claim 1, wherein a packing seat is provided on the back side of the packing mounting portion, a backup seat is provided on the back side of the seal portion of the packing, and a water passage hole is provided in the backup seat. Double-sided seal structure.

At the top of the packing attached to both sides of the lower gate, a rubber pin for positioning with the packing attached to both sides of the upper gate is projected, and on the upper surface of the lower gate, a single-packed sponge rubber packing is attached, Divided gate head differential pressure double-sided seal structure with no packing on the side.

A rubber pin for positioning with the packing attached on both sides of the upper gate is projected on the upper part of the packing attached on both sides of the lower gate, and a single-packed sponge rubber packing is attached on the upper surface of the lower gate. The divided gate head differential pressure double-sided seal structure according to claim 1 or 2.

It consists of an upper gate and a lower gate, and the front and back surfaces of both gates have the seal structure according to any one of claims 1 to 4, and a crushing allowance of packing is provided in the vicinity of the packing attached to the front and back surfaces of both gates. Divided gate with adjustable bearing plate.

It comprises an upper gate and a lower gate, the front and back surfaces of both gates have the sealing structure according to any one of claims 1 to 4, and a pin on one of the lower surface of the upper gate and the upper surface of the lower gate, and the other The split gate is characterized in that this pin is provided with a fitting receiving member, and the hanging metal fittings installed on the upper surfaces of the upper gate and the lower gate can be adjusted and moved in the direction of the front and back surfaces of the gate.

6. The split gate according to claim 5, wherein a pin is provided on one of the lower surface of the upper gate and the upper surface of the lower gate, and a fitting receiving member for this pin is provided on the other, and is installed on the upper surfaces of the upper gate and the lower gate. A split gate characterized in that the hanging metal fitting can be adjusted and moved in the direction of the front and back surfaces of the gate.

The split gate according to any one of claims 5 to 7, wherein side shoes for ensuring reproducibility of the door groove seal position are attached to both sides of the upper gate and the lower gate.

9. The divided gate according to claim 5, wherein a plurality of rollers, which are rotatably attached in the gate width direction on the bottom surface of the lower gate, are arranged in two rows in the gate thickness direction.

It consists of an upper gate and a lower gate, and the front and back surfaces of both gates have the seal structure according to any one of claims 1 to 4, and on both sides of the lower surface of the upper gate and lower gate, the front and back surfaces of the upper gate and lower gate. A split gate characterized in that a undulation jig capable of reversing by 90 degrees is installed.

The structure which can install the undulation jig | tool which can be reversed 90 degree | times to the front-back surface direction of an upper gate or a lower gate in the lower surface both sides of the upper gate and the lower gate of the division gate in any one of Claims 5-9 Divided gate characterized by that.