JP4076338B2

JP4076338B2 - Fluid transfer hose

Info

Publication number: JP4076338B2
Application number: JP2001351871A
Authority: JP
Inventors: 正若林; 文彦矢崎
Original assignee: Yokohama Rubber Co Ltd
Current assignee: Yokohama Rubber Co Ltd
Priority date: 2001-11-16
Filing date: 2001-11-16
Publication date: 2008-04-16
Anticipated expiration: 2021-11-16
Also published as: JP2003156180A

Description

【０００１】
【発明の属する技術分野】
本発明は、海洋上で油などの流体を移送する流体移送用ホ−スに関し、さらに詳しくは、移送中の流体が海洋上に漏洩して環境汚染の原因となることを未然に防止するようにした流体移送用ホ−スに関する。
【０００２】
【従来技術】
油などの流体を海上移送するのに用いられる流体移送用ホースは、ホースが破損して移送中の流体が海中に漏洩すると、大きな環境汚染に発展する恐れがある。そのため、ホースの破損をいち早く発見できる構造にすることが必要不可欠である。
【０００３】
一般に、上記のような流体移送用ホースは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層した構造になっている。主補強層及び補助補強層は、それぞれホース長手方向に対して傾斜した補強コードをゴム被覆してなる複数の補強層を、隣接する補強層が補強コードを交差させるようにして積層した構造になっており、補強コードの傾斜角度が小さい主補強層は、内面ゴム層の内側を通過する流体に対する耐圧力層として作用するのに対して、主補強層より補強コードの傾斜角度を大きくした補助補強層は、主補強層の破損により流出流体吸収層に漏洩した流体が外部に漏出するのを防ぐようにしている。
【０００４】
従来、上述した流体移送用ホースにおいて、主補強層の破損により流体が流出流体吸収層に漏洩すると、補助補強層がその漏洩流体の圧力を受けて、ホースの長手方向や径方向に伸長変形したり、或いは周方向に捩じれ変形することによりホース外形を変形させるようにした構造のホースが提案されている。
【０００５】
これらのホースには、カバーゴム層の表面に複数のライン（ストライプ）が設けられている。それらのラインがホース外形の変形に伴って変形するため、そのラインの変形を目視により作業員が発見することで、移送中の流体が海中に漏洩する前に主補強層の破損を知ることができるようになっている。
【０００６】
しかしながら、主補強層の破損が軽微であったり、不使用時の無圧力状態では、例え流体流出吸収層に漏洩流体が滞留していても、補助補強層の変形が主補強層に抑制されるので、目視ではっきりと確認できるほど変形しないという問題があった。
【０００７】
また、海水よりも比重が大きな流体を移送する場合は、上述した流体移送用ホースにおいて、流体流出吸収層の容積を大きくし、この流体流出吸収層に漏洩した流体の重さにより海水中に沈むようにした構造のホースも提案されている。
【０００８】
しかしながら、上述と同様に、主補強層の破損が軽微であったり、不使用時の無圧力状態では、例え流体流出吸収層に漏洩流体が滞留していても、ホースが目視ではっきりと確認できるほど沈まないという問題があった。
【０００９】
他方、流出流体吸収層に漏洩した流体を検知する漏洩検知器を設けた流体移送用ホースが提案されている。主補強層の破損により流出流体吸収層に漏洩した流体を漏洩検知器により直接検出することで、主補強層の破損を見つけるようにしている。
【００１０】
しかし、このように漏洩検知器を設けた流体移送用ホースは、通常、ホースに作業員が近づいて漏洩検知器を確認する必要がある。そのため、荒い波浪、風雨などの海象条件のもとでは、漏洩検知器に近づくことができないため、その間漏洩検知情報を得ることが難しいという問題があった。
【００１１】
【発明が解決しようとする課題】
本発明の目的は、主補強層の破損により流出流体吸収層に流体が漏洩したことをより確実に見つけることが可能な流体移送用ホ−スを提供することにある。
【００１２】
【課題を解決するための手段】
上記目的を達成する本発明の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成した流体移送用ホースにおいて、前記補助補強層を、前記主補強層から前記流出流体吸収層に漏洩した流体の圧力を受けるとホース外形を変形させるようにした構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する少なくとも一部が透明なケース内に漏洩流体の圧力により破壊可能な中空ボールまたは圧壊ディスクからなる圧潰部材を配置してなることを特徴とする。
本発明の他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成し、海水より比重が大きな流体を移送する流体移送用ホースにおいて、前記流出流体吸収層を、前記主補強層から前記流出流体吸収層に漏洩した流体の重さにより前記ホースが海中に沈む容積を有する構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する少なくとも一部が透明なケース内に漏洩流体の圧力により破壊可能な中空ボールまたは圧壊ディスクからなる圧潰部材を配置してなることを特徴とする。
【００１３】
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成した流体移送用ホースにおいて、前記補助補強層を、前記主補強層から前記流出流体吸収層に漏洩した流体の圧力を受けるとホース外形を変形させるようにした構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する少なくとも一部が透明なケース内に漏洩流体の吸収により濡れ状態となる濡れ部材を配置してなることを特徴とする。
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成し、海水より比重が大きな流体を移送する流体移送用ホースにおいて、前記流出流体吸収層を、前記主補強層から前記流出流体吸収層に漏洩した流体の重さにより前記ホースが海中に沈む容積を有する構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する少なくとも一部が透明なケース内に漏洩流体の吸収により濡れ状態となる濡れ部材を配置してなることを特徴とする。
【００１４】
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成した流体移送用ホースにおいて、前記補助補強層を、前記主補強層から前記流出流体吸収層に漏洩した流体の圧力を受けるとホース外形を変形させるようにした構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する少なくとも一部が透明なケース内に光を反射可能なリフレクターを配置してなることを特徴とする。
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成し、海水より比重が大きな流体を移送する流体移送用ホースにおいて、前記流出流体吸収層を、前記主補強層から前記流出流体吸収層に漏洩した流体の重さにより前記ホースが海中に沈む容積を有する構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する少なくとも一部が透明なケース内に光を反射可能なリフレクターを配置してなることを特徴とする。
【００１５】
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成した流体移送用ホースにおいて、前記補助補強層を、前記主補強層から前記流出流体吸収層に漏洩した流体の圧力を受けるとホース外形を変形させるようにした構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、逆止弁を介して前記流出流体吸収層に連通する、少なくとも一部が透明な漏洩流体流入ケース部と空気流入ケース部とを具備することを特徴とする。
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成し、海水より比重が大きな流体を移送する流体移送用ホースにおいて、前記流出流体吸収層を、前記主補強層から前記流出流体吸収層に漏洩した流体の重さにより前記ホースが海中に沈む容積を有する構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、逆止弁を介して前記流出流体吸収層に連通する、少なくとも一部が透明な漏洩流体流入ケース部と空気流入ケース部とを具備することを特徴とする。
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成した流体移送用ホースにおいて、前記補助補強層を、前記主補強層から前記流出流体吸収層に漏洩した流体の圧力を受けるとホース外形を変形させるようにした構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する漏洩流体流入ケース部と空気流入ケース部とを具備し、前記漏洩流体流入ケース部が前記流出流体吸収層に連通する液室ケース部と該液室ケース部に逆止弁を介して接続した少なくとも一部が透明な液体流入ケース部とを有し、前記液室ケース部が漏洩流体の圧力により作動するピストンと、該ピストンの作動により前記逆止弁を介して前記液体流入ケース部に押し出される着色液体を内蔵することを特徴とする。
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成し、海水より比重が大きな流体を移送する流体移送用ホースにおいて、前記流出流体吸収層を、前記主補強層から前記流出流体吸収層に漏洩した流体の重さにより前記ホースが海中に沈む容積を有する構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する漏洩流体流入ケース部と空気流入ケース部とを具備し、前記漏洩流体流入ケース部が前記流出流体吸収層に連通する液室ケース部と該液室ケース部に逆止弁を介して接続した少なくとも一部が透明な液体流入ケース部とを有し、前記液室ケース部が漏洩流体の圧力により作動するピストンと、該ピストンの作動により前記逆止弁を介して前記液体流入ケース部に押し出される着色液体を内蔵することを特徴とする。
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成した流体移送用ホースにおいて、前記補助補強層を、前記主補強層から前記流出流体吸収層に漏洩した流体の圧力を受けるとホース外形を変形させるようにした構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する漏洩流体流入ケース部と空気流入ケース部とを具備し、透明な該漏洩流体流入ケース部に漏洩流体の圧力により作動する圧力ゲ−ジを接続したことを特徴とする。
本発明の更に他の流体移送用ホ−スは、ホース内周側から、内面ゴム層、主補強層、流出流体吸収層、補助補強層、及びカバーゴム層を順次積層すると共に、海上に浮くように構成し、海水より比重が大きな流体を移送する流体移送用ホースにおいて、前記流出流体吸収層を、前記主補強層から前記流出流体吸収層に漏洩した流体の重さにより前記ホースが海中に沈む容積を有する構造にする一方、前記流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホース外部に設置し、該漏洩検知装置と前記流出流体吸収層とを連通させ、前記漏洩検知装置が、前記流出流体吸収層に連通する漏洩流体流入ケース部と空気流入ケース部とを具備し、透明な該漏洩流体流入ケース部に漏洩流体の圧力により作動する圧力ゲ−ジを接続したことを特徴とする。
【００１６】
このように補助補強層を、漏洩流体の圧力が加わるとホース外形を変形させる構造、あるいは流出流体吸収層を、ホースが水中に沈むようにした構造にするため、ホース外形の変化あるいはホースの沈下により、主補強層の破損により流出流体吸収層に流体が漏洩したことを離れたところから発見することができる。
【００１７】
他方、漏洩検知装置の設置により、目視ではっきりと確認できるほどホース変形しない場合であっても、漏洩流体の発見が可能になる。従って、主補強層の破損により流出流体吸収層に流体が漏洩したことを従来よりも一層確実に見つけることができる。
【００１８】
【発明の実施の形態】
以下、図面に基づき、本発明の実施形態を説明する。各図において、同一の構成要素には同一の符号を付し、重複した説明は省略する。
【００１９】
図１は、本発明の流体移送用ホースの一例を示し、この流体移送用ホ−スは、ホース本体１とこのホース本体１の両端に接続された取付金具２を備えている。ホース本体１は、ホース内周側から、内面ゴム層３、主補強層４、外面ゴム層５、流出流体吸収層６、チュ−ブゴム層７、補助補強層８、及びカバーゴム層９を順次積層した構造になっている。
【００２０】
取付金具２は、ホース本体１を外周面に取り付けた円筒状の金具本体２Ａにホース同志を連結するための連結フランジ２Ｂを一体的に連設した構成にしてある。
【００２１】
主補強層４は、ホース長手方向に対して傾斜配列した有機繊維コードあるいはスチールコードからなる補強コードをゴム被覆してなる複数の補強層を積層した構造になっている。隣接する補強層は、その補強コードがホース長手方向に対する傾斜方向を逆向きにして交差しており、後述する補助補強層８の補強コードより傾斜角度を小さくした主補強層４は、内面ゴム層３の内側を移送される流体に対して耐圧力層及び耐張力層として作用している。主補強層４の補強層の数としては、例えば、１４〜２０層にすることができる。
【００２２】
流出流体吸収層６は、スポンジゴムや発泡ポリウレタンなどの連続気泡を有する材料から構成され、主補強層４の破損により漏洩した流体を一時的に蓄える役割を果たすと共に、流体移送用ホ−スの浮力体の役割を果たしている。流体移送用ホ−スは、この流出流体吸収層６により海上に浮くように構成されている。
【００２３】
補助補強層８は、ホース長手方向に対して傾斜配列した有機繊維コードからなる補強コードをゴム被覆してなる複数の補強層を積層した構成になっている。隣接する補強層は、その補強コードがホース長手方向に対する傾斜方向を逆向きにして交差しており、主補強層４から流出流体吸収層６に漏洩した流体の圧力を受けるとホース外形を変形させるようにした構造にしている。
【００２４】
その構造としては、従来公知の構造を採用することができる。例えば、ホース長手方向に伸長変形する構造にするには、補強コードのホース長手方向に対する傾斜角度を静止角度（５４．７３°）より大きくする。主補強層４の破損により流体が流出流体吸収層６に漏洩し、補助補強層８に漏洩流体の圧力が作用すると、補助補強層８の補強層の補強コードが静止角度に向けて傾斜角度を小さくしながら変形するため、補強層がホース長手方向に伸び、それによって補助補強層８がホース長手方向に伸長変形することで、ホース外形（カバーゴム層９）がホース長手方向に伸長変形する。
【００２５】
また、ホース径方向に伸長変形する構造にするには、補強コードのホース長手方向に対する傾斜角度を静止角度（５４．７３°）より小さくする。主補強層４の破損により流体が流出流体吸収層６に漏洩した流体の圧力が作用すると、補助補強層８の補強層の補強コードが静止角度に向けて傾斜角度を大きくしながら変形するため、補強層がホース径方向に伸び、それによって補助補強層８がホース径方向に伸長変形することで、ホース外形がホース径方向に伸長変形する。
【００２６】
また、ホース長手方向に対して捩じれ変形させる構造にするには、一方側に傾斜する補強層の補強コードと他方側に傾斜する補強層の補強コードの傾斜角度を異ならせる（例えば、一方側を５５°、他方側を６０°）。主補強層４の破損により補助補強層８に漏洩した流体の圧力が作用すると、ホース長手方向に対して一方側に傾斜した補強コードと他方側に傾斜した補強コードの伸び率の違いにより、補助補強層８がホース長手方向に対して捩じれ変形するため、ホース外形が捩じれ変形する。
【００２７】
補助補強層８は、補強コードの傾斜角度が主補強層４より大きく、破損により流出流体吸収層６に漏洩した流体が外部に流出するのを防止する保護層の機能を有している。補助補強層８の補強層の数としては、例えば、２０層前後にすることができる。
【００２８】
カバーゴム層９の外周面９ａには、ホースと異なる色のストライプ（不図示）が設けられており、ホース外形が変形した際に、それに伴ってストライプも変形し、ホース外形が変形したことを容易に発見できるようにしている。
【００２９】
金具本体２Ａの外周面には連通管１１が固設され、その一端側が流出流体吸収層６に連通している。連通管１１の他端側は、金具本体２Ａの外周面に固定された漏洩検知装置１３に連通し、主補強層４から流出流体吸収層６に漏洩した流体を連通管１１を介して漏洩検知装置１３に誘導できるようになっている。
【００３０】
漏洩検知装置１３は、図２に示すように、連通管１１に連通する透明なケース１４内に、漏洩流体の圧力により破壊可能な圧潰部材１５を配置した構成になっている。圧潰部材１５として、内部が中空のボールが使用され、このボールは、２〜３kg/cm²程度の圧力が負荷されると圧潰し、元に復元しない構造である。ここで使用されるボールは、圧潰すればいずれの材料から構成してもよい。
【００３１】
なお、図１中、３５はスチールワイヤを円環状に巻回したビード、３６は固定リング、３７は金具本体２Ａに突設された突起であり、いずれもホース本体１を金具本体２Ａに固定するためのものである。
【００３２】
上述した流体移送用ホースによれば、主補強層４の破損により内面ゴム層３内を流れる流体が流出流体吸収層６内に漏洩すると、補助補強層８がその漏洩流体の圧力を受けて、ホースの長手方向や径方向に伸長変形したり、或いは周方向に対して捩じれ変形することによりホース外形を変形させる。それに伴ってカバーゴム層９の外周面９ａに設けたストライプも変形する。従って、このホース外形の変化により、主補強層４の破損により流出流体吸収層６に流体が漏洩したことを離れたところから見つけることができる。
【００３３】
また、流出流体吸収層６内に漏洩した流体は、連通管１１を介して漏洩検知装置１３のケース１４内に流入し、圧潰部材１５を破壊する。従って、この圧潰部材１５の破壊により、主補強層４の破損により流出流体吸収層６に流体が漏洩したことを発見することができる。
【００３４】
従って、目視ではっきりと確認できるほどホース外形が変形しない場合であっても、漏洩検知装置１３により流体の漏洩を見つけることができる一方、悪天候で漏洩検知装置に近づけない場合であっても、ホース外形の変化を介して漏洩流体の発生を知ることができるので、主補強層４の破損により流出流体吸収層６に流体が漏洩したことを従来よりも一層確実に見つけることが可能になる。
【００３５】
しかも、圧潰部材１５の使用により、ホースによる流体の移送作業が終了し、流出流体吸収層６内の漏洩流体の圧力が無くなっても、圧潰部材１５が潰れた状態でケース１４内に留まるため、破損したホースを見逃すことがない。
【００３６】
海上に浮遊する上述した流体移送用ホースにおいて、主補強層４の破損により流出流体吸収層６に流体が漏洩したか否かを監視する場合、常時はホース外形の変化を目視あるいは双眼鏡などを使用して離れたところから監視する一方、作業者（例えば、潜水夫）が漏洩検知装置１３の近くにいって、その漏洩検知装置１３を定期的に（例えば、１か月に１回）点検するのがよい。このように流体移送用ホースを監視することにより、移送中の流体が海中に漏洩する前に適切な処置を施すことができる。
【００３７】
海水よりも比重が大きな流体を移送する場合は、上述した流体移送用ホースは、流体流出吸収層６に漏洩した流体の重さにより海水中に沈む構造にすることができる。その構造としても、従来公知の構造を採用することができる。例えば、流体流出吸収層６の容積を漏洩流体の重さによりホースが水中に少なくとも部分的に沈むほど大きくなるようにする。補助補強層８は変形する必要がないため、補強層の補強コードの傾斜角度を静止角度とする。
【００３８】
このように水中に沈むようにした構造の流体移送用ホースにおいても、漏洩検知装置１３と組み合わせることで、主補強層４の破損により流出流体吸収層６に流体が漏洩したことをより確実に見つけることができる。
【００３９】
この水中に沈むようにした流体移送用ホースを監視する場合は、上述した監視方法において、ホース外形に代えて、ホースライン（流体移送用ホースを多数連結したもの）における流体移送用ホースの沈み具合を常時監視する。
【００４０】
図３は、上述した流体移送用ホースにおいて用いられる漏洩検知装置の他の例を示す。この漏洩検知装置１３Ａでは、上述した圧潰部材１５として、圧潰ディスクをケース１３内に固定したものである。この圧潰ディスクは、予め切れ目を入れた鉄などの金属製の薄円盤からなり、所定の圧力が負荷されると切れ目に沿って破壊され、圧潰する構造になっている。連通管１１を通って矢印方向に流れてきた漏洩流体の圧力により、ケース１４内の圧潰ディスクが圧潰することで、漏洩が発生したことを検知することができる。圧潰ディスクは上述した金属製に限定されず、圧潰すればいずれの材料から構成してもよい。
【００４１】
図４は、漏洩検知装置の更に他の例を示し、この漏洩検知装置１３Ｂは、連通管１１に接続された透明なケース１４内に漏洩流体を吸収して濡れ状態となる不織布からなる濡れ部材１６を配置したものである。連通管１１を通って矢印方向に流れてきた漏洩流体により、ケース１４内の濡れ部材１６が濡れることで、漏洩が発生したことを検知する。濡れ部材１６は、上述した不織布に限定されず、漏洩流体を吸収して濡れ状態となるものであればいずれの材料から構成してもよい。
【００４２】
図５は、漏洩検知装置の更に他の例を示し、この漏洩検知装置１３Ｃは、連通管１１に接続された透明なケース１４内に光を反射可能なリフレクター１７を配置したものである。リフレクター１７の反射面１７ａを上側にしてケース１４の底部に固定してある。連通管１１を通って矢印方向に流れてきた漏洩流体がリフレクター１７の上側まで達すると、外部から光を当てた際に反射しなく、あるいは反射し難くなることで、漏洩が発生したことを検知することができる。
【００４３】
図２〜５の実施形態において、ケース１４は内部を見易くするために透明にしたが、少なくともケース１４の一部を、内部に配置した部材が確認できる範囲で透明にすればよい。
【００４４】
図６は、漏洩検知装置の参考例を示す。この漏洩検知装置１３Ｄは、連通管１１に連通するケース１４内に、漏洩流体の圧力により作動するスイッチ機構２１と、スイッチ機構２１の作動により点灯するフラッシングライト２２を配置した構成になっている。連通管１１を通って矢印方向に流れてきた漏洩流体の圧力によりスイッチ機構２１が作動し、これによりフラッシングライト２２が点灯して漏洩が生じたことを検知できるようにしている。
【００４５】
フラッシングライト２２としては、電池交換が不要なク−ロンメモリ−式のフラッシングライトを好ましく使用でき、これにより電気的にメンテナンスフリ−の漏洩検知が可能になる。フラッシングライト２２を収めるケ−ス１４は、透明あるいは半透明な材料で構成するのが好ましいが、ライト２２の点灯が外部から発見できればいずれの材料から構成してもよい。
【００４６】
図７は、漏洩検知装置の更に他の例を示し、この漏洩検知装置１３Ｅは、連通管１１に接続された透明なケース１４の入口側に逆止弁２５が設けられている。ケース１４は、漏洩流体が流れ込む漏洩流体流入ケース部２４と空気の流れ込む空気流入ケース部２３を具備しており、連通管１１を通って流れてきた漏洩流体が、逆止弁２５を通って矢印方向に漏洩流体流入ケース部２４に向かって流れ込むことにより漏洩が発生したことを検知できるようになっている。空気流入ケース部２３は、内部に存在する空気の影響を受けて漏洩流体が気圧の関係で漏洩流体流入ケース部２４内に流れ難くなるのを防止している。
【００４７】
漏洩流体流入ケース部２４の先端側は、図７に示すように、取付金具２側に傾斜させておき、漏洩流体が空気を空気流入ケース部２３側に押し上げながら漏洩流体流入ケース部２４に流れ込むようにするのが好ましい。この実施形態では、ケース１４全体を透明にしなくてもよく、漏洩流体が流入する漏洩流体流入ケース部２４の少なくとも一部を漏洩流体が確認できる範囲で透明にすればよい。
【００４８】
図８は、漏洩検知装置の更に他の例を示す。この漏洩検知装置１３Ｆは、上述した漏洩流体流入ケース部２４が、連通管１１に連通する液室ケース部２７とこの液室ケース部２７に逆止弁２５を介して接続した透明な液体流入ケース部３０とを有している。液室ケース部２７には、漏洩流体の圧力により作動するピストン２６が内蔵してあり、そのピストン２６の液体流入ケース部３０側の液室３１に着色液体が収容されている。液室ケース部２７の入口にも逆止弁３２が設けられている。
【００４９】
連通管１１を通って矢印方向に流れてきた漏洩流体が、ピストン２６を液体流入ケ−ス部３０側に向かって前進させると、その前進するピストン２６により液室３１にあらかじめ封入しておいた着色流体が液体流入ケース部３０に押し出される。これにより漏洩の発生が検知される。この実施形態では、液体流入ケース部３０の少なくとも一部を着色流体が確認できる範囲で透明にすればよい。
【００５０】
図９は、漏洩検知装置の更に他の例を示し、この漏洩検知装置１３Ｇは、漏洩流体流入ケース部２４に漏洩流体の圧力により作動する圧力ゲ−ジ２９を接続した構造になっている。連通管１１を通って矢印方向に流れてきた漏洩流体は漏洩流体流入ケース部２４に流れ込み、漏洩流体の圧力により圧力ゲ−ジ２９が作動して漏洩が発生したことを外部に知らせる。この実施形態では、ケース１４は透明になっている。
【００５１】
図１０は、漏洩検知装置の他の参考例を示す。この漏洩検知装置１３Ｈは、連通管１１に接続された透明なケース１４内に漏洩流体の圧力により応答がオフになるトランスポンダ４１を配置したものである。トランスポンダ４１はケース１４に固定されており、このトランスポンダ４１に圧力センサ４２が取り付けられている。この圧力センサ４２が漏洩流体の圧力を検知すると、トランスポンダ４１の回路をオフにするようになっている。ケース１４は、ここでは透明、非透明のいずれであってもよい。
【００５２】
連通管１１を通って矢印方向に流れてきた漏洩流体の圧力を圧力センサ４２が検出してトランスポンダ４１がオフになり、点検時に応答がなくなることで、漏洩が発生したことを知らせる。
【００５３】
このようにホース外部に設置したケース１４内にトランスポンダ４１を収容することで、トランスポンダ４１の電源に電池を使用することができるため、トランスポンダ４１の応答距離が大幅に長くなるので、作業船からの検知が可能になる利点がある。
【００５４】
この実施形態では、トランスポンダ４１がオフになるように構成したが、漏洩流体の圧力を圧力センサ４２が検知してトランスポンダ４１がオンになるものであってもよい。また、トランスポンダ４１に代えて送信機を配置することもできる。その場合、送信機は漏洩流体の圧力により作動して信号を発信するように構成するのが好ましいが、漏洩流体の圧力により信号の発信を停止する構成であってもよい。
【００５６】
【発明の効果】
上述したように本発明は、補助補強層を、主補強層から流出流体吸収層に漏洩した流体の圧力を受けるとホース外形を変形させる、あるいはホースを水中に沈むようにした構造にする一方、流出流体吸収層に漏洩した流体を検知する漏洩検知装置をホースに取り付けたので、主補強層の破損により流出流体吸収層に流体が漏洩したことをより確実に発見することができる。
【図面の簡単な説明】
【図１】本発明の流体移送用ホースの一例を示す要部断面図である。
【図２】図１の漏洩検知装置の拡大断面図である。
【図３】本発明の流体移送用ホースに用いられる漏洩検知装置の他の例を示す拡大断面図である。
【図４】本発明の流体移送用ホースに用いられる漏洩検知装置の更に他の例を示す拡大断面図である。
【図５】本発明の流体移送用ホースに用いられる漏洩検知装置の更に他の例を示す拡大断面図である。
【図６】本発明の流体移送用ホースに用いられる漏洩検知装置の参考例を示す拡大断面図である。
【図７】本発明の流体移送用ホースに用いられる漏洩検知装置の更に他の例を示す拡大断面図である。
【図８】本発明の流体移送用ホースに用いられる漏洩検知装置の更に他の例を示す拡大断面図である。
【図９】本発明の流体移送用ホースに用いられる漏洩検知装置の更に他の例を示す拡大断面図である。
【図１０】本発明の流体移送用ホースに用いられる漏洩検知装置の他の参考例を示す拡大断面図である。
【符号の説明】
１ホース本体
２取付金具
３内面ゴム層
４主補強層
６流出流体吸収層
８補助補強層
９カバ−ゴム層
１１連通管
１３，１３Ａ〜Ｈ漏洩検知装置
１４ケース
１５圧潰部材
１６濡れ部材
１７リフレクター
２１スイッチ機構
２２フラッシングライト
２３空気流入ケース部
２４漏洩流体流入ケース部
２５逆止弁
２６ピストン
２７液室ケース部
２９圧力ゲ−ジ
３０液体流入ケース部
３１液室
３２逆止弁
４１トランスポンダ
４２圧力センサ[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a fluid transfer wheel for transferring a fluid such as oil on the ocean.ToMore specifically, the fluid transfer hoses that prevent the fluid being transferred from leaking into the ocean and causing environmental pollution in advance.ToRelated.
[0002]
[Prior art]
A fluid transfer hose used for transporting fluids such as oil at sea may develop into large environmental pollution if the hose breaks and the fluid being transported leaks into the sea. For this reason, it is essential to have a structure that can quickly detect a hose breakage.
[0003]
In general, the above-described fluid transfer hose has a structure in which an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer are sequentially stacked from the inner peripheral side of the hose. The main reinforcing layer and the auxiliary reinforcing layer have a structure in which a plurality of reinforcing layers formed by rubber-covering reinforcing cords inclined with respect to the longitudinal direction of the hose are laminated so that adjacent reinforcing layers cross the reinforcing cords. The main reinforcement layer with a small inclination angle of the reinforcing cord acts as a pressure-resistant layer against the fluid passing through the inside of the inner rubber layer, whereas the auxiliary reinforcement has a larger inclination angle of the reinforcing cord than the main reinforcement layer. The layer prevents fluid leaking to the outflow fluid absorbing layer due to breakage of the main reinforcing layer from leaking to the outside.
[0004]
Conventionally, in the above-described fluid transfer hose, when the fluid leaks to the outflow fluid absorption layer due to the breakage of the main reinforcement layer, the auxiliary reinforcement layer receives the pressure of the leaked fluid and expands and deforms in the longitudinal direction and the radial direction of the hose. Or a hose having a structure in which the outer shape of the hose is deformed by being twisted and deformed in the circumferential direction has been proposed.
[0005]
These hoses are provided with a plurality of lines (stripes) on the surface of the cover rubber layer. Since these lines are deformed along with the deformation of the hose outer shape, the worker can visually detect the deformation of the lines, and know that the main reinforcing layer is damaged before the fluid being transferred leaks into the sea. It can be done.
[0006]
However, when the main reinforcing layer is lightly damaged or in a no-pressure state when not in use, deformation of the auxiliary reinforcing layer is suppressed by the main reinforcing layer even if leakage fluid is retained in the fluid outflow absorbing layer. Therefore, there was a problem that it did not deform so that it could be clearly confirmed visually.
[0007]
In addition, when transferring a fluid having a higher specific gravity than seawater, in the above-described fluid transfer hose, the volume of the fluid outflow absorption layer is increased, and the fluid leaked into the fluid outflow absorption layer is submerged in the seawater. A hose with a mud structure has also been proposed.
[0008]
However, in the same manner as described above, the hose can be clearly confirmed visually even if the main reinforcing layer is lightly damaged or in the no-pressure state when not in use, even if leaked fluid is retained in the fluid outflow absorbing layer. There was a problem of not sinking as much.
[0009]
On the other hand, there has been proposed a fluid transfer hose provided with a leak detector for detecting a fluid leaked to the outflow fluid absorbing layer. The leak of the main reinforcing layer is detected by directly detecting the fluid leaked into the outflow fluid absorbing layer due to the damage of the main reinforcing layer by the leak detector.
[0010]
However, in the fluid transfer hose provided with the leak detector as described above, it is usually necessary for an operator to approach the hose to check the leak detector. For this reason, there is a problem in that it is difficult to obtain leak detection information during that time because it is not possible to approach the leak detector under sea conditions such as rough waves and wind and rain.
[0011]
[Problems to be solved by the invention]
  An object of the present invention is to provide a fluid transfer hoe that can more reliably detect that a fluid has leaked into an outflow fluid absorbing layer due to a breakage of a main reinforcing layer.TheIt is to provide.
[0012]
[Means for Solving the Problems]
  The fluid transfer hose of the present invention that achieves the above object is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose.And configured to float on the seaIn the fluid transfer hose, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when receiving the pressure of the fluid leaked from the main reinforcing layer to the outflowing fluid absorbing layer, while the outflowing fluid absorbing layer Leak detection to detect fluid leakingAn apparatus is installed outside the hose, and the leakage detection device and the spilled fluid absorption layer are communicated with each other. The leakage detection device communicates with the spilled fluid absorption layer, and the pressure of the leakage fluid is within at least a part of the transparent case. A crushing member made of a hollow ball or a crushing disk that can be broken by theIt is characterized by that.
  Another fluid transfer hose of the present invention is such that an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer are sequentially laminated from the inner peripheral side of the hose and float on the sea. In the fluid transfer hose configured to transfer a fluid having a specific gravity greater than seawater, the hose sinks into the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer. While having a structure having a volume, a leak detection device that detects fluid leaked into the outflow fluid absorption layer is installed outside the hose, the leak detection device and the outflow fluid absorption layer are communicated, and the leak detection device A crushing member made of a hollow ball or a crushing disk that can be broken by the pressure of the leaking fluid is disposed in a case that is at least partially communicated with the outflowing fluid absorbing layer.
[0013]
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured as described above, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when subjected to the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer. A leak detection device for detecting fluid leaking into the fluid absorption layer is installed outside the hose, the leak detection device and the outflow fluid absorption layer are communicated, and the leak detection device communicates with the outflow fluid absorption layer. A wet member that is wetted by absorption of leaked fluid is disposed in a partially transparent case.
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured to transfer a fluid having a larger specific gravity than seawater, the hose is placed in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer. A leak detection device that detects a fluid leaked into the spilled fluid absorption layer is installed outside the hose while having a structure having a sinking volume, and the leak detection device and the spilled fluid absorption layer are communicated with each other. However, it is characterized in that a wetting member that is in a wet state by absorbing leaked fluid is disposed in a case where at least a part communicating with the outflow fluid absorbing layer is transparent.
[0014]
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured as described above, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when subjected to the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer. A leak detection device for detecting fluid leaking into the fluid absorption layer is installed outside the hose, the leak detection device and the outflow fluid absorption layer are communicated, and the leak detection device communicates with the outflow fluid absorption layer. It is characterized in that a reflector capable of reflecting light is disposed in a partially transparent case.
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured to transfer a fluid having a larger specific gravity than seawater, the hose is placed in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer. A leak detection device that detects a fluid leaked into the spilled fluid absorption layer is installed outside the hose while having a structure having a sinking volume, and the leak detection device and the spilled fluid absorption layer are communicated with each other. However, it is characterized in that a reflector capable of reflecting light is disposed in a case in which at least a part communicating with the outflow fluid absorbing layer is transparent.
[0015]
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured as described above, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when subjected to the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer. A leak detection device for detecting fluid leaking into the fluid absorption layer is installed outside the hose, and the leak detection device and the outflow fluid absorption layer are communicated with each other, and the leak detection device is connected to the outflow fluid via a check valve. A leakage fluid inflow case portion and an air inflow case portion that are at least partially transparent and communicate with the absorption layer are provided.
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured to transfer a fluid having a larger specific gravity than seawater, the hose is placed in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer. A leak detection device that detects a fluid leaked into the spilled fluid absorption layer is installed outside the hose while having a structure having a sinking volume, and the leak detection device and the spilled fluid absorption layer are communicated with each other. However, it is characterized by comprising at least a partially leaked fluid inflow case portion and an air inflow case portion communicating with the effluent fluid absorbing layer via a check valve.
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured as described above, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when subjected to the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer. A leak detection device for detecting fluid leaking into the fluid absorption layer is installed outside the hose, the leak detection device and the spilled fluid absorption layer are communicated, and the leak detection device communicates with the spilled fluid absorption layer. A fluid inflow case portion and an air inflow case portion, wherein the leaked fluid inflow case portion is connected to the liquid chamber case portion communicating with the outflow fluid absorbing layer, and the liquid chamber case portion via a check valve. Part A piston that has a clear liquid inflow case portion, and the liquid chamber case portion is operated by the pressure of the leaked fluid, and the colored liquid that is pushed out to the liquid inflow case portion through the check valve by the operation of the piston. It is built in.
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured to transfer a fluid having a larger specific gravity than seawater, the hose is placed in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer. A leak detection device that detects a fluid leaked into the spilled fluid absorption layer is installed outside the hose while having a structure having a sinking volume, and the leak detection device and the spilled fluid absorption layer are communicated with each other. Comprises a leakage fluid inflow case portion and an air inflow case portion communicating with the outflow fluid absorption layer, and the liquid chamber case portion and the liquid chamber case portion where the leakage fluid inflow case portion communicates with the outflow fluid absorption layer. Reverse A liquid inflow case portion that is at least partially connected via a valve, and the liquid chamber case portion is actuated by the pressure of leaking fluid, and the piston is actuated by the operation of the piston via the check valve. A colored liquid to be pushed out into the liquid inflow case portion is incorporated.
  Still another fluid transfer hose according to the present invention is formed by sequentially laminating an inner rubber layer, a main reinforcing layer, an outflow fluid absorbing layer, an auxiliary reinforcing layer, and a cover rubber layer from the inner peripheral side of the hose and floating on the sea. In the fluid transfer hose configured as described above, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when subjected to the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer. A leak detection device for detecting fluid leaking into the fluid absorption layer is installed outside the hose, the leak detection device and the spilled fluid absorption layer are communicated, and the leak detection device communicates with the spilled fluid absorption layer. A fluid inflow case portion and an air inflow case portion are provided, and a pressure gauge that is operated by the pressure of the leaked fluid is connected to the transparent leak fluid inflow case portion.
  Still another fluid transfer hose according to the present invention includes an inner rubber layer, a main reinforcement layer, a flow from the inner peripheral side of the hose. In the fluid transfer hose for transferring a fluid having a specific gravity greater than seawater, the outgoing fluid absorption layer, the auxiliary reinforcing layer, and the cover rubber layer are sequentially laminated, and are configured to float on the sea. The hose has a volume that sinks in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer, while a leak detection device that detects the fluid leaked into the spilled fluid absorption layer is provided outside the hose. And installing the leakage detection device and the outflow fluid absorption layer, the leakage detection device comprising a leakage fluid inflow case portion and an air inflow case portion communicating with the outflow fluid absorption layer, A pressure gauge that is operated by the pressure of the leaking fluid is connected to the leaking fluid inflow case portion.
[0016]
In this way, the auxiliary reinforcing layer has a structure that deforms the hose outline when the pressure of the leaking fluid is applied, or the outflow fluid absorption layer has a structure in which the hose sinks in water. In addition, it can be found from a remote location that fluid has leaked into the outflow fluid absorption layer due to the breakage of the main reinforcing layer.
[0017]
  On the other hand, leak detectionapparatusEven if the hose is not deformed so that it can be clearly confirmed visually, the leakage fluid can be found. Therefore, it can be found more reliably than before that the fluid has leaked into the outflow fluid absorption layer due to the breakage of the main reinforcing layer.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description is omitted.
[0019]
FIG. 1 shows an example of a fluid transfer hose according to the present invention. This fluid transfer hose includes a hose body 1 and attachment fittings 2 connected to both ends of the hose body 1. The hose body 1 has an inner rubber layer 3, a main reinforcing layer 4, an outer rubber layer 5, an outflow fluid absorbing layer 6, a tube rubber layer 7, an auxiliary reinforcing layer 8, and a cover rubber layer 9 in order from the inner peripheral side of the hose. It has a laminated structure.
[0020]
The mounting bracket 2 has a configuration in which a connecting flange 2B for connecting the hoses to each other is integrally connected to a cylindrical metal fitting body 2A having the hose body 1 attached to the outer peripheral surface.
[0021]
The main reinforcing layer 4 has a structure in which a plurality of reinforcing layers formed by covering a reinforcing cord made of an organic fiber cord or a steel cord inclined with respect to the hose longitudinal direction by rubber coating are laminated. Adjacent reinforcement layers have their reinforcement cords intersecting with the inclination direction of the hose longitudinal direction reversed, and the main reinforcement layer 4 having a smaller inclination angle than the reinforcement cord of the auxiliary reinforcement layer 8 described later is an inner rubber layer. 3 acts as a pressure-resistant layer and a tension-resistant layer with respect to the fluid transferred inside. The number of reinforcing layers of the main reinforcing layer 4 can be, for example, 14 to 20 layers.
[0022]
  The spilled fluid absorbing layer 6 is made of a material having open cells such as sponge rubber and foamed polyurethane, and serves to temporarily store the fluid leaked due to the breakage of the main reinforcing layer 4, and the fluid transfer hose. It plays the role of a buoyant body.The fluid transfer hose is configured to float on the sea by the outflow fluid absorbing layer 6.
[0023]
The auxiliary reinforcing layer 8 has a structure in which a plurality of reinforcing layers formed by rubber-covering reinforcing cords made of organic fiber cords that are inclined with respect to the longitudinal direction of the hose are laminated. Adjacent reinforcement layers intersect with each other with the reinforcement cords inclined in the direction opposite to the longitudinal direction of the hose, and when the pressure of the fluid leaked from the main reinforcement layer 4 to the outflow fluid absorption layer 6 is received, the outer shape of the hose is deformed. The structure is as follows.
[0024]
A conventionally known structure can be adopted as the structure. For example, in order to make the structure elongate and deform in the longitudinal direction of the hose, the inclination angle of the reinforcing cord with respect to the longitudinal direction of the hose is made larger than the static angle (54.73 °). When the main reinforcing layer 4 breaks and the fluid leaks to the outflow fluid absorbing layer 6 and the pressure of the leaking fluid acts on the auxiliary reinforcing layer 8, the reinforcing cord of the reinforcing layer of the auxiliary reinforcing layer 8 is inclined toward the stationary angle. Since the reinforcing layer is deformed while being reduced, the reinforcing layer extends in the longitudinal direction of the hose, whereby the auxiliary reinforcing layer 8 is elongated and deformed in the longitudinal direction of the hose, whereby the outer shape of the hose (cover rubber layer 9) is elongated and deformed in the longitudinal direction of the hose.
[0025]
Moreover, in order to make the structure elongate and deform in the hose radial direction, the inclination angle of the reinforcing cord with respect to the hose longitudinal direction is made smaller than the stationary angle (54.73 °). When the pressure of the fluid leaked to the outflow fluid absorbing layer 6 due to breakage of the main reinforcing layer 4 is applied, the reinforcing cord of the reinforcing layer of the auxiliary reinforcing layer 8 is deformed while increasing the inclination angle toward the stationary angle. The reinforcing layer extends in the hose radial direction, whereby the auxiliary reinforcing layer 8 extends and deforms in the hose radial direction, so that the outer shape of the hose extends and deforms in the hose radial direction.
[0026]
In addition, in order to obtain a structure that twists and deforms in the longitudinal direction of the hose, the reinforcement cords of the reinforcement layer that inclines to one side and the reinforcement cords of the reinforcement layer that inclines to the other side have different inclination angles (for example, one side is 55 °, 60 ° on the other side). When the fluid pressure leaked to the auxiliary reinforcing layer 8 due to the breakage of the main reinforcing layer 4, the auxiliary cord is assisted by the difference in elongation rate between the reinforcing cord inclined to one side and the reinforcing cord inclined to the other side with respect to the longitudinal direction of the hose. Since the reinforcing layer 8 is twisted and deformed with respect to the longitudinal direction of the hose, the outer shape of the hose is twisted and deformed.
[0027]
The auxiliary reinforcing layer 8 has a function of a protective layer that prevents the fluid leaked to the outflow fluid absorbing layer 6 due to breakage from flowing out to the outside because the inclination angle of the reinforcing cord is larger than that of the main reinforcing layer 4. The number of reinforcing layers of the auxiliary reinforcing layer 8 can be, for example, about 20 layers.
[0028]
The outer peripheral surface 9a of the cover rubber layer 9 is provided with a stripe (not shown) of a color different from that of the hose. When the hose outer shape is deformed, the stripe is also deformed and the hose outer shape is deformed. It is easy to find.
[0029]
A communication pipe 11 is fixed to the outer peripheral surface of the metal fitting body 2A, and one end thereof communicates with the outflow fluid absorbing layer 6. The other end of the communication pipe 11 communicates with a leak detection device 13 fixed to the outer peripheral surface of the metal fitting body 2A, and leaks fluid leaked from the main reinforcing layer 4 to the outflow fluid absorption layer 6 via the communication pipe 11. It can be guided to the device 13.
[0030]
As shown in FIG. 2, the leak detection device 13 has a configuration in which a crushing member 15 that can be broken by the pressure of leaking fluid is disposed in a transparent case 14 that communicates with the communication pipe 11. A hollow ball is used as the crushing member 15, and this ball is 2 to 3 kg / cm.²The structure is crushed when a certain amount of pressure is applied, and does not recover. The ball used here may be made of any material as long as it is crushed.
[0031]
In FIG. 1, 35 is a bead obtained by winding a steel wire in an annular shape, 36 is a fixing ring, and 37 is a protrusion protruding from the metal fitting body 2A, both of which fix the hose main body 1 to the metal fitting body 2A. Is for.
[0032]
According to the fluid transfer hose described above, when the fluid flowing in the inner rubber layer 3 leaks into the outflow fluid absorption layer 6 due to the damage of the main reinforcement layer 4, the auxiliary reinforcement layer 8 receives the pressure of the leaked fluid, The outer shape of the hose is deformed by elongating and deforming in the longitudinal direction and the radial direction of the hose or by twisting and deforming in the circumferential direction. Accordingly, the stripe provided on the outer peripheral surface 9a of the cover rubber layer 9 is also deformed. Therefore, it can be found from a remote location that the fluid has leaked to the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4 due to the change in the outer shape of the hose.
[0033]
Further, the fluid leaked into the outflow fluid absorbing layer 6 flows into the case 14 of the leak detection device 13 through the communication pipe 11 and destroys the crushing member 15. Therefore, it is possible to discover that fluid has leaked to the outflow fluid absorbing layer 6 due to the damage of the main reinforcing layer 4 due to the destruction of the crushing member 15.
[0034]
  Therefore, even if the hose outer shape is not deformed so that it can be clearly confirmed visually, the leak detector 13 can detect a fluid leak, but it can detect a leak in bad weather.apparatusEven if it is not close to the outer periphery, it is possible to know the generation of the leaked fluid through the change of the hose outer shape, so that the leakage of the fluid into the outflow fluid absorbing layer 6 due to the breakage of the main reinforcing layer 4 can be further improved. It becomes possible to find with certainty.
[0035]
In addition, the use of the crushing member 15 ends the transfer operation of the fluid by the hose, and the crushing member 15 stays in the case 14 in a crushed state even when the pressure of the leaked fluid in the outflow fluid absorbing layer 6 disappears. Never miss a damaged hose.
[0036]
  In the above-mentioned fluid transfer hose floating on the sea, when monitoring whether or not the fluid leaks to the outflow fluid absorption layer 6 due to the breakage of the main reinforcement layer 4, the change of the hose external shape is visually observed or binoculars are used. While monitoring from a remote location, an operator (eg, a diver)13Close to the leak detection device13Should be checked regularly (eg once a month). By monitoring the fluid transfer hose in this way, appropriate measures can be taken before the fluid being transferred leaks into the sea.
[0037]
When a fluid having a specific gravity greater than that of seawater is transferred, the above-described fluid transfer hose can be configured to sink into seawater due to the weight of the fluid leaked to the fluid outflow absorption layer 6. As the structure, a conventionally known structure can be adopted. For example, the volume of the fluid outflow absorbing layer 6 is made so large that the hose is at least partially submerged in water due to the weight of the leaking fluid. Since the auxiliary reinforcing layer 8 does not need to be deformed, the inclination angle of the reinforcing cord of the reinforcing layer is set as a stationary angle.
[0038]
  Even in a fluid transfer hose having a structure that sinks in water, a leak detection device13In combination, it is possible to more reliably find that the fluid has leaked into the outflow fluid absorbing layer 6 due to breakage of the main reinforcing layer 4.
[0039]
When monitoring the fluid transfer hose that has been submerged in the water, in the monitoring method described above, the fluid transfer hose sinks in the hose line (a number of fluid transfer hoses connected) instead of the hose outline. Monitor constantly.
[0040]
FIG. 3 shows another example of the leak detection device used in the above-described fluid transfer hose. In this leak detection device 13A, a crushing disk is fixed in the case 13 as the crushing member 15 described above. This crushing disk is made of a thin disk made of metal such as iron that has been cut in advance, and has a structure that breaks and crushes along a cut when a predetermined pressure is applied. It is possible to detect that leakage has occurred because the crushing disk in the case 14 is crushed by the pressure of the leakage fluid flowing in the direction of the arrow through the communication pipe 11. The crushing disk is not limited to the above-described metal, and may be made of any material as long as it is crushed.
[0041]
FIG. 4 shows still another example of the leak detection device. The leak detection device 13B is a wet member made of a nonwoven fabric that absorbs leak fluid into the transparent case 14 connected to the communication pipe 11 and becomes wet. 16 is arranged. It is detected that leakage has occurred when the wetting member 16 in the case 14 is wetted by the leaking fluid that has flowed in the direction of the arrow through the communication pipe 11. The wetting member 16 is not limited to the above-described nonwoven fabric, and may be made of any material as long as it absorbs the leaked fluid and becomes wet.
[0042]
FIG. 5 shows still another example of the leak detection device, and this leak detection device 13C has a reflector 17 capable of reflecting light disposed in a transparent case 14 connected to the communication pipe 11. The reflector 17 is fixed to the bottom of the case 14 with the reflecting surface 17a facing upward. When the leaked fluid that has flowed in the direction of the arrow through the communication pipe 11 reaches the upper side of the reflector 17, it is detected that leakage has occurred by not reflecting or difficult to reflect when light is applied from the outside. can do.
[0043]
In the embodiment of FIGS. 2 to 5, the case 14 is made transparent so that the inside can be easily seen. However, at least a part of the case 14 may be made transparent as long as the members arranged inside can be confirmed.
[0044]
  FIG. 6 shows a leak detection device.referenceAn example is shown. This leak detection device 13D has a configuration in which a switch mechanism 21 that is operated by the pressure of a leaking fluid and a flashing light 22 that is turned on by the operation of the switch mechanism 21 are arranged in a case 14 that communicates with the communication pipe 11. The switch mechanism 21 is actuated by the pressure of the leaked fluid flowing in the direction of the arrow through the communication pipe 11, whereby the flashing light 22 is turned on so that the occurrence of the leak can be detected.
[0045]
As the flushing light 22, a cron memory flashing light that does not require battery replacement can be preferably used, and thus it is possible to electrically detect maintenance-free leakage. The case 14 for housing the flashing light 22 is preferably made of a transparent or translucent material, but may be made of any material as long as the lighting of the light 22 can be found from the outside.
[0046]
  FIG. 7 shows still another example of the leak detection device. The leak detection device 13E is provided with a check valve 25 on the inlet side of the transparent case 14 connected to the communication pipe 11. Case14Includes a leakage fluid inflow case portion 24 into which leakage fluid flows and an air inflow case portion 23 into which air flows, and the leakage fluid flowing through the communication pipe 11 passes through the check valve 25 in the direction of the arrow. It is possible to detect that leakage has occurred by flowing toward the leaked fluid inflow case 24. The air inflow case portion 23 prevents the leaked fluid from being difficult to flow into the leaked fluid inflow case portion 24 due to the atmospheric pressure due to the influence of air existing inside.
[0047]
As shown in FIG. 7, the front end side of the leaking fluid inflow case portion 24 is inclined to the mounting bracket 2 side, and the leaking fluid flows into the leaking fluid inflow case portion 24 while pushing up the air to the air inflow case portion 23 side. It is preferable to do so. In this embodiment, the entire case 14 does not need to be transparent, and at least a part of the leaking fluid inflow case portion 24 into which the leaking fluid flows may be transparent as long as the leaking fluid can be confirmed.
[0048]
FIG. 8 shows still another example of the leak detection device. This leak detection device 13F includes a liquid chamber case portion 27 in which the above-described leaked fluid inflow case portion 24 communicates with the communication pipe 11 and a transparent liquid inflow case connected to the liquid chamber case portion 27 via a check valve 25. Part 30. The liquid chamber case portion 27 incorporates a piston 26 that is actuated by the pressure of the leaking fluid, and a colored liquid is contained in the liquid chamber 31 on the liquid inflow case portion 30 side of the piston 26. A check valve 32 is also provided at the inlet of the liquid chamber case portion 27.
[0049]
When the leaking fluid that has flowed in the direction of the arrow through the communication pipe 11 advances the piston 26 toward the liquid inflow case portion 30 side, it is sealed in the liquid chamber 31 in advance by the piston 26 that advances. The colored fluid is pushed out to the liquid inflow case portion 30. Thereby, the occurrence of leakage is detected. In this embodiment, at least a part of the liquid inflow case portion 30 may be transparent as long as the colored fluid can be confirmed.
[0050]
  FIG. 9 shows still another example of the leakage detection device, and this leakage detection device 13G has a structure in which a pressure gauge 29 that is operated by the pressure of the leakage fluid is connected to the leakage fluid inflow case portion 24. The leaked fluid that has flowed in the direction of the arrow through the communication pipe 11 flows into the leaked fluid inflow case 24, and the pressure gauge 29 is activated by the pressure of the leaked fluid to notify the outside that leakage has occurred. In this embodiment, the case 14 is transparentIt has become.
[0051]
  FIG. 10 shows a leak detection device.Other referencesAn example is shown. The leak detection device 13H is configured by disposing a transponder 41 whose response is turned off by the pressure of leaking fluid in a transparent case 14 connected to the communication pipe 11. The transponder 41 is fixed to the case 14, and a pressure sensor 42 is attached to the transponder 41. When the pressure sensor 42 detects the pressure of the leaking fluid, the circuit of the transponder 41 is turned off. The case 14 may be either transparent or non-transparent here.
[0052]
The pressure sensor 42 detects the pressure of the leaked fluid flowing in the direction of the arrow through the communication pipe 11 and the transponder 41 is turned off, and the response is lost at the time of inspection, thereby notifying that a leak has occurred.
[0053]
By accommodating the transponder 41 in the case 14 installed outside the hose as described above, the battery can be used as the power source of the transponder 41. Therefore, the response distance of the transponder 41 is greatly increased. There is an advantage that detection is possible.
[0054]
In this embodiment, the transponder 41 is configured to be turned off, but the pressure sensor 42 may detect the pressure of the leaked fluid and the transponder 41 may be turned on. Further, a transmitter can be arranged in place of the transponder 41. In this case, the transmitter is preferably configured to operate by the pressure of the leaking fluid and transmit a signal, but may be configured to stop the transmission of the signal by the pressure of the leaking fluid.
[0056]
【The invention's effect】
  As described above, according to the present invention, the auxiliary reinforcing layer has a structure in which the outer shape of the hose is deformed when receiving the pressure of the fluid leaked from the main reinforcing layer to the outflow fluid absorbing layer, or the hose is submerged in water. Leak detection to detect fluid leaking into fluid absorption layerapparatusIs attached to the hose, it is possible to more reliably detect that the fluid has leaked into the outflow fluid absorbing layer due to the breakage of the main reinforcing layer.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing an example of a fluid transfer hose of the present invention.
FIG. 2 Leak detection of FIG.apparatusFIG.
FIG. 3 Leakage detection used in the fluid transfer hose of the present inventionapparatusIt is an expanded sectional view showing other examples.
FIG. 4 Leakage detection used in the fluid transfer hose of the present inventionapparatusIt is an expanded sectional view showing other examples of.
FIG. 5: Leakage detection used in the fluid transfer hose of the present inventionapparatusIt is an expanded sectional view showing other examples of.
FIG. 6: Leakage detection used in the fluid transfer hose of the present inventionEquipment referenceIt is an expanded sectional view which shows an example.
FIG. 7: Leakage detection used in the fluid transfer hose of the present inventionapparatusIt is an expanded sectional view showing other examples of.
FIG. 8 Leakage detection used in the fluid transfer hose of the present inventionapparatusIt is an expanded sectional view showing other examples of.
FIG. 9: Leakage detection used in the fluid transfer hose of the present inventionapparatusIt is an expanded sectional view showing other examples of.
FIG. 10 shows leakage detection used in the fluid transfer hose of the present invention.Other reference of equipmentIt is an expanded sectional view which shows an example.
[Explanation of symbols]
    1 Hose body
    2 Mounting bracket
    3 Internal rubber layer
    4 Main reinforcement layer
    6 Outflow fluid absorption layer
    8 Auxiliary reinforcement layer
    9 Cover rubber layer
    11 Communication pipe
    13, 13A-H Leakage detectionapparatus
    14 cases
    15 Crushing member
    16 Wet material
    17 Reflector
    21 Switch mechanism
    22 Flushing light
    23 Air inflow case
    24 Leakage fluid inflow case
    25 Check valve
    26 Piston
    27 Liquid chamber case
    29 Pressure gauge
    30 Liquid inflow case
    31 Liquid chamber
    32 Check valve
    41 transponder
    42 Pressure sensor

Claims

In the hose for fluid transfer configured to sequentially laminate the inner rubber layer, the main reinforcing layer, the outflow fluid absorbing layer, the auxiliary reinforcing layer, and the cover rubber layer from the inner peripheral side of the hose, and to float on the sea ,
The auxiliary reinforcing layer has a structure that deforms the outer shape of the hose when receiving the pressure of the fluid leaked from the main reinforcing layer to the spilled fluid absorbing layer, while detecting the fluid leaking to the spilled fluid absorbing layer. A leak detection device is installed outside the hose, and the leak detection device communicates with the outflow fluid absorption layer. The leak detection device communicates with the outflow fluid absorption layer in at least a part of the transparent case. A fluid transfer hose in which a crushing member made of a hollow ball or a crushing disk that can be broken by the pressure of is arranged .

The inner rubber layer, main reinforcing layer, spilled fluid absorbing layer, auxiliary reinforcing layer, and cover rubber layer are laminated in order from the inner hose side of the hose, and are configured to float on the sea, transferring fluid with a higher specific gravity than seawater In the fluid transfer hose,
The spilled fluid absorbing layer has a structure in which the hose has a volume that sinks in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorbing layer, while the fluid leaked into the spilled fluid absorbing layer is detected. A leak detection device is installed outside the hose, and the leak detection device and the spilled fluid absorption layer are communicated with each other. The leak detection device leaks into the transparent case that is at least partially communicated with the spilled fluid absorption layer. A fluid transfer hose in which a crushing member made of a hollow ball or a crushing disk that can be broken by a fluid pressure is disposed .

In the hose for fluid transfer configured to sequentially laminate the inner rubber layer, the main reinforcing layer, the outflow fluid absorbing layer, the auxiliary reinforcing layer, and the cover rubber layer from the inner peripheral side of the hose, and to float on the sea,
The auxiliary reinforcing layer has a structure in which the hose outer shape is deformed when the pressure of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer is detected, while the fluid leaked into the spilled fluid absorption layer is detected. A leak detection device is installed outside the hose, and the leak detection device communicates with the outflow fluid absorption layer. The leak detection device communicates with the outflow fluid absorption layer in at least a part of the transparent case. A fluid transfer hose in which a wetting member that becomes wet by absorbing water is disposed .

The inner rubber layer, main reinforcing layer, spilled fluid absorbing layer, auxiliary reinforcing layer, and cover rubber layer are laminated in order from the inner hose side of the hose, and are configured to float on the sea, transferring fluid with a higher specific gravity than seawater In the fluid transfer hose,
The spilled fluid absorbing layer has a structure in which the hose has a volume that sinks in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorbing layer, while the fluid leaked into the spilled fluid absorbing layer is detected. A leak detection device is installed outside the hose, and the leak detection device and the spilled fluid absorption layer are communicated with each other. The leak detection device leaks into the transparent case that is at least partially communicated with the spilled fluid absorption layer. A fluid transfer hose comprising a wet member that becomes wet by absorbing fluid .

In the hose for fluid transfer configured to sequentially laminate the inner rubber layer, the main reinforcing layer, the outflow fluid absorbing layer, the auxiliary reinforcing layer, and the cover rubber layer from the inner peripheral side of the hose, and to float on the sea,
The auxiliary reinforcing layer has a structure in which the hose outer shape is deformed when the pressure of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer is detected, while the fluid leaked into the spilled fluid absorption layer is detected. A leak detection device is installed outside the hose, and the leak detection device communicates with the spilled fluid absorption layer. The leak detection device transmits light into a case where at least a part of the leak detection device communicates with the spilled fluid absorption layer. A fluid transfer hose with a reflective reflector .

The inner rubber layer, main reinforcing layer, spilled fluid absorbing layer, auxiliary reinforcing layer, and cover rubber layer are laminated in order from the inner hose side of the hose, and are configured to float on the sea, transferring fluid with a higher specific gravity than seawater In the fluid transfer hose,
The effluent absorber layer, while the hose by weight of the fluid that has leaked into the effluent absorber layer from the main reinforcing layer is a structure having a volume of sinking in the sea, the fluid that has leaked into the effluent absorber layer A leakage detection device to be detected is installed outside the hose, the leakage detection device and the spilled fluid absorption layer are communicated, and the leakage detection device is in a case where at least a part of the leakage detection device communicates with the spilled fluid absorption layer is transparent A fluid transfer hose comprising a reflector capable of reflecting light .

In the hose for fluid transfer configured to sequentially laminate the inner rubber layer, the main reinforcing layer, the outflow fluid absorbing layer, the auxiliary reinforcing layer, and the cover rubber layer from the inner peripheral side of the hose, and to float on the sea,
The auxiliary reinforcing layer has a structure in which the hose outer shape is deformed when the pressure of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer is detected, while the fluid leaked into the spilled fluid absorption layer is detected. A leak detection device is installed outside the hose, the leak detection device communicates with the outflow fluid absorption layer, and the leak detection device communicates with the outflow fluid absorption layer via a check valve, at least a part of A fluid transfer hose comprising a transparent leakage fluid inflow case portion and an air inflow case portion .

The inner rubber layer, main reinforcing layer, spilled fluid absorbing layer, auxiliary reinforcing layer, and cover rubber layer are laminated in order from the inner hose side of the hose, and are configured to float on the sea, transferring fluid with a higher specific gravity than seawater In the fluid transfer hose,
The spilled fluid absorbing layer has a structure in which the hose has a volume that sinks in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorbing layer, while the fluid leaked into the spilled fluid absorbing layer is detected. At least a part of which the leak detection device communicates with the spilled fluid absorption layer via a check valve. A fluid transfer hose comprising a transparent leakage fluid inflow case portion and an air inflow case portion .

In the hose for fluid transfer configured to sequentially laminate the inner rubber layer, the main reinforcing layer, the outflow fluid absorbing layer, the auxiliary reinforcing layer, and the cover rubber layer from the inner peripheral side of the hose, and to float on the sea,
The auxiliary reinforcing layer has a structure in which the hose outer shape is deformed when the pressure of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer is detected, while the fluid leaked into the spilled fluid absorption layer is detected. A leak detection device is installed outside the hose, and the leak detection device communicates with the outflow fluid absorption layer. The leak detection device includes a leak fluid inflow case portion and an air inflow case portion that communicate with the outflow fluid absorption layer. A liquid chamber case portion in which the leaked fluid inflow case portion communicates with the outflow fluid absorbing layer, and a liquid inflow case portion that is at least partially transparent connected to the liquid chamber case portion via a check valve. a, a piston the liquid chamber casing section is operated by the pressure of the leakage fluid, fluid transfer incorporating a colored liquid extruded into the liquid inlet casing portion through the check valve by operation of the piston Over the nest.

The inner rubber layer, main reinforcing layer, spilled fluid absorbing layer, auxiliary reinforcing layer, and cover rubber layer are laminated in order from the inner hose side of the hose, and are configured to float on the sea, transferring fluid with a higher specific gravity than seawater In the fluid transfer hose,
The spilled fluid absorbing layer has a structure in which the hose has a volume that sinks in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorbing layer, while the fluid leaked into the spilled fluid absorbing layer is detected. A leak detection device is installed outside the hose, the leak detection device communicates with the outflow fluid absorption layer, and the leak detection device communicates with the outflow fluid absorption layer with a leak fluid inflow case portion and an air inflow case portion A liquid chamber case portion in which the leakage fluid inflow case portion communicates with the outflow fluid absorption layer, and a liquid inflow case portion at least partially connected to the liquid chamber case portion via a check valve; anda piston the liquid chamber casing section is operated by the pressure of the leaking fluid, the fluid transfer incorporating a colored liquid extruded into the liquid inlet casing portion through the check valve by operation of the piston Hose.

In the hose for fluid transfer configured to sequentially laminate the inner rubber layer, the main reinforcing layer, the outflow fluid absorbing layer, the auxiliary reinforcing layer, and the cover rubber layer from the inner peripheral side of the hose, and to float on the sea,
The auxiliary reinforcing layer has a structure in which the hose outer shape is deformed when the pressure of the fluid leaked from the main reinforcing layer to the spilled fluid absorption layer is detected, while the fluid leaked into the spilled fluid absorption layer is detected. A leak detection device is installed outside the hose, and the leak detection device communicates with the outflow fluid absorption layer. The leak detection device includes a leak fluid inflow case portion and an air inflow case portion that communicate with the outflow fluid absorption layer. A fluid transfer hose having a transparent leakage fluid inflow case portion connected to a pressure gauge that operates by the pressure of the leakage fluid .

The inner rubber layer, main reinforcing layer, spilled fluid absorbing layer, auxiliary reinforcing layer, and cover rubber layer are laminated in order from the inner hose side of the hose, and are configured to float on the sea, transferring fluid with a higher specific gravity than seawater In the fluid transfer hose,
The spilled fluid absorbing layer has a structure in which the hose has a volume that sinks in the sea due to the weight of the fluid leaked from the main reinforcing layer to the spilled fluid absorbing layer, while the fluid leaked into the spilled fluid absorbing layer is detected. A leak detection device is installed outside the hose, the leak detection device communicates with the outflow fluid absorption layer, and the leak detection device communicates with the outflow fluid absorption layer with a leak fluid inflow case portion and an air inflow case portion A fluid transfer hose having a transparent leakage fluid inflow case portion connected to a pressure gauge that is operated by the pressure of the leakage fluid .

12. The fluid transfer hose according to claim 1, wherein a stripe is provided on an outer peripheral surface of the cover rubber layer .

The auxiliary reinforcing layer is configured by laminating a plurality of reinforcing layers formed by rubber-covering reinforcing cords so that adjacent reinforcing layers cross the reinforcing cords with the inclination direction with respect to the hose longitudinal direction being reversed. 14. The fluid transfer hose according to claim 1, wherein an inclination angle of the reinforcing cord with respect to a longitudinal direction of the hose is larger than a stationary angle.

The auxiliary reinforcing layer is configured by laminating a plurality of reinforcing layers formed by rubber-covering reinforcing cords so that adjacent reinforcing layers cross the reinforcing cords with the inclination direction with respect to the hose longitudinal direction being reversed. The fluid according to claim 1, 3, 5, 7, 9, 11 or 13, wherein the inclination angle of the reinforcement cord inclined to one side and the reinforcement cord of the reinforcement layer inclined to the other side are different. Transfer hose.