JP7206333B2 - Support structure of double pipe for ship fuel transfer - Google Patents

Support structure of double pipe for ship fuel transfer Download PDF

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JP7206333B2
JP7206333B2 JP2021111233A JP2021111233A JP7206333B2 JP 7206333 B2 JP7206333 B2 JP 7206333B2 JP 2021111233 A JP2021111233 A JP 2021111233A JP 2021111233 A JP2021111233 A JP 2021111233A JP 7206333 B2 JP7206333 B2 JP 7206333B2
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ウ イ、ソン
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ヘガン ハイテク カンパニー リミテッド
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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Description

本発明は、二重管の支持構造に関し、詳しくは、船舶の燃料を移送する内管を保護するために、外管内に設置するに際して、内管を支持するために、内管と外管の間に設置する船舶燃料移送用二重管の支持構造に関する。 TECHNICAL FIELD The present invention relates to a support structure for a double pipe, and more particularly, to protect the inner pipe for transferring fuel of a ship, and to support the inner pipe when installed in the outer pipe. The present invention relates to a support structure for a double pipe for ship fuel transfer installed between them.

一般に、船舶のエンジンルームにＬＮＧのような燃料ガスを供給するために、燃料ガスが供給される内管を、一定の空間を置き、外管で取り囲む方式の二重管構造を使用する。 Generally, in order to supply fuel gas such as LNG to the engine room of a ship, a double pipe structure is used in which an inner pipe to which fuel gas is supplied is surrounded by an outer pipe with a certain space therebetween.

ところが、二重管において、外管内に位置する内管が動くか、外管と衝突することを防止するために、内管と外管の間に内管を支持する支持体を用いる。 However, in the double pipe, a support for supporting the inner pipe is used between the inner pipe and the outer pipe in order to prevent the inner pipe positioned within the outer pipe from moving or colliding with the outer pipe.

このような二重管の支持構造に関する先行技術としては、本出願人が出願して登録された特許文献１：大韓民国登録特許１０－２０１７８４９(2019.08.28.)「船舶燃料移送用二重管の支持構造」が図１に示されている。図１は、従来の船舶燃料移送用二重管の支持構造を示す断面図である。 As a prior art related to such a double pipe support structure, Patent Document 1 registered by the present applicant: Korean Patent No. 10-2017849 (2019.08.28.) “Double pipe for ship fuel transfer The support structure' is shown in FIG. FIG. 1 is a cross-sectional view showing a conventional support structure for a double pipe for fuel transfer on a ship.

これによると、二重管において、外管(P2)の内側に内管(P1)を挟み、対向してボルト３１とナット３２からなる一対の組立手段３により固設されるように、一定の幅を有する帯状からなる一対の本体２と、本体２の対向する内側にそれぞれ、内管(P1)に外接して入り込み形成された面接触湾曲部２１と、本体２の両端部に、内管(P1)で固定される本体２が、外管(P2)の内面に押圧支持されるように、バネ復元力を有するように構成された張力部２５と、本体２の両側の張力部２５の外側に、本体２の外枠部２３が面接触湾曲部２１に向けて押圧されるとき、張力部２５が外向き拡張されても、外管(P2)の内面に接しないように、外管(P2)の内面と離隔して設けられた拡張余裕空間４とを含み、本体２は、正面からみると、面接触湾曲部２１、一側張力部２５、枠部２３、他側張力部２５を回って、再度、面接触湾曲部２１に繋がる本体２の全体が開口した部分がなく、閉曲線をなすように構成されたことを特徴とする船舶燃料移送用二重管の支持構造を開示している。 According to this, in the double pipe, the inner pipe (P1) is sandwiched inside the outer pipe (P2) and fixed by a pair of assembly means 3 consisting of a bolt 31 and a nut 32 facing each other. A pair of belt-shaped main bodies 2 having a width, surface contact curved portions 21 formed on the opposite inner sides of the main bodies 2 so as to circumscribe the inner pipe (P1), and inner pipes at both ends of the main body 2. The main body 2 fixed at (P1) is supported by pressing against the inner surface of the outer tube (P2). When the outer frame portion 23 of the main body 2 is pressed outward toward the surface contact curved portion 21, the outer tube (P2) is arranged so as not to contact the inner surface of the outer tube (P2) even if the tension portion 25 is expanded outward. The main body 2 includes an expansion margin space 4 provided apart from the inner surface of (P2). Again, the supporting structure of the double pipe for ship fuel transfer is disclosed, characterized in that the entire main body 2 connected to the surface contact curved portion 21 has no open portion and is configured to form a closed curve. ing.

従来技術の場合、支持構造の組立及び設置が容易であり、内管と外管の設置が迅速に行えるというメリットがあった。 In the case of the prior art, there is an advantage that the support structure is easy to assemble and install, and the inner pipe and the outer pipe can be quickly installed.

しかし、実際の配管は、直線配列ではなく、燃料移送の方向を切り換えるために、多数回折り曲げられた構造を有する。また、燃料は、移送中に温度が急激に変わるので、配管には、伸縮現象が生じ、このような伸縮現象で折曲部位に負荷がかかるか、振動が発生する。 However, the actual piping is not a linear arrangement, but has a structure that is bent many times to switch the direction of fuel transfer. In addition, since the temperature of the fuel changes abruptly during transportation, the pipe expands and contracts.

このような負荷や振動により、本体を組立てるためのボルトとナットの締結状態が弛み、組立部位に破断、破損が生じることもある。 Such loads and vibrations loosen bolts and nuts used to assemble the main body, and may cause breakage or damage to assembled parts.

また、支持構造の外側が、外管の内周面に線接触又は点接触して内管を支持することになるが、振動や捻れなどにより、接触部位が、外管の内周面と持続的に摩擦が発生することになると、摩耗だけでなく、スパークが発生して、爆発、火災の危険がある。その理由は、殆どの支持構造が金属材質からなるためである。 In addition, the outside of the support structure supports the inner tube by line contact or point contact with the inner peripheral surface of the outer tube. If friction occurs, not only abrasion but also sparks are generated, which may cause explosion and fire. The reason is that most support structures are made of metal material.

これは、非常に危険な状況を招くことになり、必ず、改善すべき事項である。 This leads to a very dangerous situation and is definitely something that should be improved.

大韓民国登録特許10-2017849(2019.8.28.)：船舶燃料移送用二重管の支持構造Korean Patent No. 10-2017849 (2019.8.28.): Support structure for double pipes for fuel transfer on ships 大韓民国登録特許10-1703233(2017.1.31.)：フレキシブル支持構造Korea Registered Patent No. 10-1703233 (2017.1.31.): Flexible support structure 大韓民国公開特許10-2019-0080308(2019.7.8.)：ＬＮＧ燃料移送二重管用支持構造の作製方法、及びこれにより作製された支持構造Korean Patent Laid-Open Patent No. 10-2019-0080308 (2019.7.8.): Manufacturing method of LNG fuel transfer double pipe support structure and support structure manufactured by the same

本発明は、前記のような問題点を解決するためになされたものであって、本発明の目的は、一対の対向する支持構造を組立てることに当たり、組立部の破断や破損を防止する構造を有する船舶燃料移送用二重管の支持構造を提供することである。 SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems, and an object of the present invention is to provide a structure for assembling a pair of supporting structures facing each other, which prevents breakage or damage of the assembled parts. It is to provide a support structure for a double pipe for ship fuel transfer.

本発明の他の目的は、支持構造の外端部と外管の内周面との間の摩擦による静電気の発生を防止する構造を有する船舶燃料移送用二重管の支持構造を提供することである。 Another object of the present invention is to provide a support structure for a double pipe for fuel transfer on a ship, which has a structure for preventing the generation of static electricity due to friction between the outer end of the support structure and the inner peripheral surface of the outer pipe. is.

前記した目的を達成するための本発明による船舶燃料移送用二重管の支持構造は、半円形状をなし、内管の外周面に密着される第１の密着部、前記第１の密着部の両端から折り曲げられる第１の組立部、前記第１の組立部からそれぞれ内側に延在する第１の弾性部、前記第１の弾性部から延在し、外管の内周面に接触する第１の押圧部からなる帯状の第１の支持体と、半円形状をなし、内管の外周面に密着される第２の密着部、前記第２の密着部の両端から折り曲げられ、前記第１の組立部と対向する第２の組立部、前記第２の組立部からそれぞれ内側に延在する第２の弾性部、前記第２の弾性部から延在し、外管の内周面に接触する第２の押圧部からなる帯状の第２の支持体と、前記第１の組立部と第２の組立部を互いに結合させる組立手段とを含む二重管の支持構造であって、前記組立手段は、前記第１の組立部に安着される第１の締結バーと、前記第２の組立部に安着される第２の締結バーと、前記第１の締結バーと第２の締結バーの両端を貫通して締め付けられ、前記第１の締結バーと第２の締結バーに締付け力を加える締結ボルトとからなることを特徴とする。 In order to achieve the above object, the support structure for a double pipe for fuel transfer of ships according to the present invention comprises: a first contact portion having a semicircular shape and being brought into close contact with the outer peripheral surface of the inner pipe; first assembly portions bent from both ends of the outer tube, first elastic portions extending inward from the first assembly portions, and extending from the first elastic portions to contact the inner peripheral surface of the outer tube A band-like first support body comprising a first pressing portion, a second contact portion having a semicircular shape and being in close contact with the outer peripheral surface of the inner pipe, both ends of the second contact portion being bent, and the a second assembly portion facing the first assembly portion; second elastic portions extending inwardly from the second assembly portion; and an inner peripheral surface of the outer tube extending from the second elastic portion. A support structure for a double tube, comprising a belt-shaped second support body consisting of a second pressing portion that contacts with and assembly means for connecting the first assembly portion and the second assembly portion to each other, The assembling means includes a first fastening bar seated on the first assembly part, a second fastening bar seated on the second assembly part, the first fastening bar and a second fastening bar. fastening bolts which penetrate through both ends of the fastening bar and apply fastening force to the first fastening bar and the second fastening bar.

前記外管と内管の間に流れる空気の抵抗を減少させるために、前記第１の締結バーと第２の締結バーはそれぞれ、前記第１の組立部と第２の組立部に面接触する第１の曲面部及び第２の曲面部と、前記外管に向かう第１の平面部及び第２の平面部とからなり、断面が半円形状である。 The first fastening bar and the second fastening bar are in surface contact with the first assembly and the second assembly, respectively, in order to reduce the resistance of the air flowing between the outer tube and the inner tube. It is composed of a first curved surface portion, a second curved surface portion, and a first flat surface portion and a second flat surface portion facing the outer tube, and has a semicircular cross section.

前記締結ボルトの頭は、前記第１の平面部と第２の平面部から突出しないように埋設される。 The head of the fastening bolt is embedded so as not to protrude from the first plane portion and the second plane portion.

前記第１の支持体と第２の支持体は、ＣＦＲＰ(Carbon Fiber Reinforced Plastic)材質からなり、前記第１の支持体と第２の支持体の外面には、ＧＦＲＰがコートされる。 The first support and the second support are made of CFRP (Carbon Fiber Reinforced Plastic) material, and the outer surfaces of the first support and the second support are coated with GFRP.

前記第１の押圧部と第２の押圧部には、ＧＦＲＰ材質からなる静電気防止用の絶縁体が取り付けられる。 An antistatic insulator made of GFRP material is attached to the first pressing portion and the second pressing portion.

以上で説明した本発明によると、以下のような効果を奏する。 According to the present invention described above, the following effects are obtained.

第１に、従来、ボルトとナットだけで支持構造を組立てているので、結合部が破れるか、破損する問題があったが、本発明は、締結ボルトを組立部に直接締め付けることなく、締結バーを用いて組み立てるので、内管の伸縮や振動が生じても、組立部が破断又は破損することを顕著に減少することができる。 First, in the past, since the support structure was assembled only with bolts and nuts, there was a problem that the connection part was torn or damaged. Therefore, even if the inner tube expands or contracts or vibrates, breakage or breakage of the assembled portion can be significantly reduced.

第２に、支持体の全体がＣＦＲＰ材質からなり、内管の伸縮で生じる応力よりも大きい降伏応力を有するので、安全である。 Second, it is safe because the entire support is made of CFRP material and has a yield stress greater than the stress caused by expansion and contraction of the inner tube.

第３に、支持体にＧＦＲＰがコートされるので、静電気の発生がなく、押圧部にＧＦＲＰ材質の絶縁体が取り付けられるので、摩擦による静電気の発生を防止することができる。 Third, since the support is coated with GFRP, static electricity is not generated, and since an insulator made of GFRP material is attached to the pressing portion, static electricity due to friction can be prevented.

従来の船舶燃料移送用二重管の支持構造を示す断面図である。FIG. 10 is a cross-sectional view showing a support structure for a conventional ship fuel transfer double pipe. 本発明の一実施例による船舶燃料移送用二重管の支持構造を示す斜視図である。1 is a perspective view showing a support structure for a double pipe for transporting ship fuel according to an embodiment of the present invention; FIG. 図２における本発明の縦断面図である。Figure 3 is a longitudinal cross-sectional view of the invention in Figure 2; 本発明の使用状態図である。1 is a usage state diagram of the present invention; FIG.

以下、本発明による一実施例を添付の図面を参照して、より詳細に説明することにする。 An embodiment according to the invention will now be described in more detail with reference to the accompanying drawings.

一方、図面を参照した説明は、本発明をより容易に理解するためのものであって、本発明の範疇がそれにより限定されるものではない。そして、本発明を説明することに当たり、関連する公知技術に関する具体的な説明が、本発明の要旨を濁していると判断される場合、詳細な説明は、省略することにする。 On the other hand, the description with reference to the drawings is for easier understanding of the present invention, and does not limit the scope of the present invention. Further, in describing the present invention, if it is determined that the specific description of related known technologies obscures the gist of the present invention, the detailed description will be omitted.

図２は、本発明の一実施例による船舶燃料移送用二重管の支持構造を示す斜視図であり、図３は、図２における本発明の縦断面図であり、図４は、本発明の使用状態図である。 FIG. 2 is a perspective view showing a supporting structure for a double pipe for fuel transfer in accordance with one embodiment of the present invention, FIG. 3 is a longitudinal sectional view of the present invention in FIG. 2, and FIG. is a usage state diagram.

本発明は、二重管の燃料が移送される内管(Pi)と、前記内管(Pi)を保護する外管(Po)の間に設けられ、大きく、第１の支持体１００と、第２の支持体２００と、組立手段３００とを含む。 The present invention is provided between an inner pipe (Pi) for transferring fuel of a double pipe and an outer pipe (Po) for protecting the inner pipe (Pi), and comprises a first support 100, It includes a second support 200 and assembly means 300 .

まず、前記第１の支持体１００について説明する。 First, the first support 100 will be described.

前記第１の支持体１００は、全体として、略半ドーナツ形状からなり、前記内管の半分を支持する。 The first support 100 generally has a semi-doughnut shape and supports half of the inner tube.

前記第１の支持体１００は、一定の幅を有する帯状からなり、適切に折り曲げて、第１の密着部１１０、第１の組立部１２０、第１の弾性部１３０、第１の押圧部１４０が連続して連結された構成を有する。 The first supporting member 100 is formed in a belt shape having a certain width, and is appropriately bent to form the first contacting portion 110, the first assembly portion 120, the first elastic portion 130, and the first pressing portion 140. are connected in series.

前記第１の密着部１１０は、内管(Pi)の外周面に密着、外接できるように、断面が半円形状に折り曲げられる構造である。 The first contact part 110 has a structure in which the cross section is bent into a semicircular shape so as to be in close contact with and circumscribe the outer peripheral surface of the inner pipe (Pi).

そして、前記第１の密着部１１０の両端は、外管(Po)の内周面側に向かうように、１８０°に折り曲げられて、第１の組立部１２０が形成される。そこで、前記第１の組立部１２０は、半円形状の断面を有することになる。 Both ends of the first contact part 110 are bent at 180 degrees toward the inner peripheral surface of the outer tube (Po) to form a first assembly part 120 . Therefore, the first assembly portion 120 has a semicircular cross section.

また、前記第１の密着部１１０の両端に形成された第１の組立部１２０はそれぞれ、外側に丸い弧状に延在して、第１の弾性部１３０を形成する。 Also, the first assembly parts 120 formed at both ends of the first contact part 110 extend outward in a circular arc shape to form a first elastic part 130 .

前記第１の弾性部１３０は、前記第１の密着部１１０の両端から離れるような弾性力を有することになる。 The first elastic portion 130 has an elastic force such that it separates from both ends of the first contact portion 110 .

また、前記第１の押圧部１４０は、前記第１の弾性部１３０から延設されるもので、外管(Po)の外周面に面接触又は線接触する。 The first pressing portion 140 extends from the first elastic portion 130 and is in surface contact or line contact with the outer peripheral surface of the outer tube (Po).

そこで、前記第１の押圧部１４０がそれぞれ、外管(Po)の内周面に接触した状態で、前記第１の弾性部１３０が離れるような弾性力により、前記第１の押圧部１４０は、外管(Po)の内周面を強く押圧することになる。そして、弾性反力により、前記第１の密着部１１０は、内管(Pi)の外周面に更に強く密着される。 Therefore, in a state where the first pressing portions 140 are in contact with the inner peripheral surface of the outer tube (Po), the first pressing portions 140 are moved by an elastic force such that the first elastic portions 130 are separated from each other. , strongly presses the inner peripheral surface of the outer tube (Po). Then, due to the elastic reaction force, the first contact portion 110 is more strongly adhered to the outer peripheral surface of the inner pipe (Pi).

一方、従来の押圧部は、互いに連結されて、全体として開口した部分のない閉曲線形状を有しているが、本発明における前記第１の押圧部１４０は、互いに連結されておらず、離れた形状を有し、開口した形状を有する。 On the other hand, the conventional pressing portions are connected to each other and have a closed curve shape with no open portion as a whole. It has a shape and has an open shape.

これは、前記第１の支持体１００を内管(Pi)に組立て、外管(Po)に挿入するとき、前記第１の押圧部１４０を押して挿入が容易であるというメリットがある。 This has the advantage that when the first support 100 is assembled to the inner pipe (Pi) and inserted into the outer pipe (Po), the first pressing part 140 is pushed to facilitate insertion.

ついで、前記第２の支持体２００について説明する。 Next, the second support 200 will be explained.

前記第２の支持体２００は、前記第１の支持体１００と同一の形状と構造を有する。そして、前記第１の支持体１００と第２の支持体２００は、互いに対称して設けられる。 The second support 200 has the same shape and structure as the first support 100 . The first support 100 and the second support 200 are symmetrical to each other.

すなわち、前記第１の支持体１００が、前記内管(Pi)の一側半分に密着し、前記第２の支持体２００が、前記内管(Pi)の他側半分に密着して設けられる。 That is, the first support 100 is in close contact with one half of the inner pipe (Pi), and the second support 200 is in close contact with the other half of the inner pipe (Pi). .

具体的に、前記第２の支持体２００は、第２の密着部２１０と、第２の組立部２２０と、第２の弾性部２３０と、第２の押圧部２４０とから構成され、それぞれ、第１の密着部１１０、第１の組立部１２０、第１の弾性部１３０、第１の押圧部１４０と同様な構造を有するので、詳細な説明は、省略する。 Specifically, the second support 200 is composed of a second contact portion 210, a second assembly portion 220, a second elastic portion 230, and a second pressing portion 240, each of which Since it has the same structure as the first contact portion 110, the first assembly portion 120, the first elastic portion 130, and the first pressing portion 140, detailed description thereof will be omitted.

但し、前記第１の組立部１２０と第２の組立部２２０が、互いに当接して設けられる。 However, the first assembly portion 120 and the second assembly portion 220 are provided in contact with each other.

そこで、第１の組立部１２０と第２の組立部２２０を、後述する前記組立手段３００で互いに締め付けることになる。 Therefore, the first assembly portion 120 and the second assembly portion 220 are fastened together by the assembly means 300 described later.

本発明において、前記第１の支持体１００と第２の支持体２００は、ＣＦＲＰ材質からなるのが望ましい。 In the present invention, the first support 100 and the second support 200 are preferably made of CFRP material.

従来、二重管の支持構造は、殆ど金属素材(スチールなど)からなっており、内管の変位が伸縮される場合、降伏応力を超える応力が生じて、破断又は破損する問題があった。 Conventionally, the support structure of the double pipe is mostly made of metal materials (steel, etc.), and when the displacement of the inner pipe is expanded and contracted, stress exceeding the yield stress is generated and there is a problem of breakage or breakage.

しかし、本発明において、前記第１の支持体１００と第２の支持体２００をＣＦＲＰで製造すると、内管の変位が伸縮される範囲を超える応力が生じても、降伏応力よりも小さいので、塑性変形が発生せず、安全である。 However, in the present invention, when the first support 100 and the second support 200 are made of CFRP, even if the stress exceeds the range of expansion and contraction of the inner tube, it is smaller than the yield stress. It is safe because plastic deformation does not occur.

また、前記第１の支持体１００と第２の支持体２００の外面には、ＧＦＲＰをコートするのが望ましい。 In addition, the outer surfaces of the first support 100 and the second support 200 are preferably coated with GFRP.

従来、支持構造が金属素材からなるので、スパーク、静電気などの危険があったが、ＣＦＲＰは、スチールより弱いものの、導体であるため、ＧＦＲＰをコートすることで、絶縁効果が優れることになる。 Conventionally, the support structure is made of metal material, so there was a risk of sparks, static electricity, etc. CFRP is weaker than steel, but since it is a conductor, coating it with GFRP will provide excellent insulation.

一方、前記第１の押圧部１４０と第２の押圧部２４０には、一定の厚さを有する静電気防止用の絶縁体１５０、２５０を更に取り付けるのが望ましい。 Meanwhile, it is preferable that the first pressing part 140 and the second pressing part 240 are further provided with anti-static insulators 150 and 250 having a certain thickness.

前記第１の押圧部１４０と第２の押圧部２４０は、持続的に、外管(Po)の内周面に接触した状態で動くことになるので、摩擦が絶えず起きる。これは、摩耗及び静電気発生の虞がある。 Since the first pressing part 140 and the second pressing part 240 continuously move in contact with the inner peripheral surface of the outer pipe (Po), friction is constantly generated. This poses a risk of wear and static generation.

このため、前記絶縁体１５０、２５０は、ＧＦＲＰ材質からなることで、摩擦による摩耗を最小化し、静電気の発生を防止することができる。 Therefore, the insulators 150 and 250 are made of GFRP material, thereby minimizing wear due to friction and preventing the generation of static electricity.

ついで、前記組立手段３００について説明する。 Next, the assembling means 300 will be explained.

前記組立手段３００は、前記第１の組立部１２０と第２の組立部２２０を互いに締め付けて、前記第１の支持体１００と第２の支持体２００を互いに組立てる構成であって、第１の締結バー３１０、第２の締結バー３２０、及び締結ボルト３３０からなる。 The assembling means 300 is configured to assemble the first supporting body 100 and the second supporting body 200 by fastening the first assembling part 120 and the second assembling part 220 together. It consists of a fastening bar 310 , a second fastening bar 320 and a fastening bolt 330 .

前記第１の締結バー３１０と、第２の締結バー３２０とはそれぞれ、円形の棒状であり、前記第１の組立部１２０と第２の組立部２２０に安着される。 The first fastening bar 310 and the second fastening bar 320 are circular rods and are seated on the first assembly part 120 and the second assembly part 220, respectively.

そして、前記第１の締結バー３１０と第２の締結バー３２０の長さは、前記第１の組立部１２０と第２の組立部２２０の幅と同一に形成されるが、図面に示しているように、前記締結ボルト３３０が貫通するように、前記第１の組立部１２０と第２の組立部２２０の幅よりも長く形成されるのが望ましい。 The lengths of the first fastening bar 310 and the second fastening bar 320 are formed to be the same as the widths of the first assembly part 120 and the second assembly part 220, which are shown in the drawings. As such, it is preferable that the width of the first assembly part 120 and the second assembly part 220 be longer than the width of the first assembly part 120 and the second assembly part 220 so that the fastening bolt 330 can pass therethrough.

前記第１の締結バー３１０と第２の締結バー３２０は、平行に配置され、両端にそれぞれ、締結ボルト３３０が貫通して締結することで、前記第１の組立部１２０と第２の組立部２２０を締め付ける。 The first fastening bar 310 and the second fastening bar 320 are arranged parallel to each other, and fastening bolts 330 pass through and fasten the first fastening bar 310 and the second fastening bar 320, respectively. 220 is tightened.

一方、前記外管(Po)と内管(Pi)の間には、一般に、空気を強制に流している。 On the other hand, air is generally forced to flow between the outer tube (Po) and the inner tube (Pi).

これは、内管(Pi)から燃料が漏れる場合、漏れガスを速やかに排出して、爆発及び火災を防止するためである。 This is to prevent explosion and fire by rapidly discharging leaked gas when fuel leaks from the inner pipe (Pi).

ところが、従来の組立に用いられるボルト、ナットなどが、空気の流れを妨げる抵抗として働いていた。 However, the bolts, nuts, etc. used in the conventional assembly work as a resistance to block the air flow.

そこで、空気の抵抗を最小化するために、前記第１の締結バー３１０と第２の締結バー３２０は、断面が半円形状をなすのが望ましい。 Therefore, in order to minimize the air resistance, it is preferable that the first fastening bar 310 and the second fastening bar 320 have semicircular cross sections.

すなわち、前記第１の締結バー３１０と第２の締結バー３２０の断面は、前記第１の組立部１２０と第２の組立部２２０にそれぞれ面接触する第１の曲面部３１１及び第２の曲面部３２１と、空気と接触する第１の平面部３１２及び第２の平面部３２２とからなる構成である。 That is, the cross sections of the first fastening bar 310 and the second fastening bar 320 have a first curved surface portion 311 and a second curved surface that are in surface contact with the first assembly portion 120 and the second assembly portion 220, respectively. It is composed of a portion 321, and a first plane portion 312 and a second plane portion 322 that are in contact with air.

前記第１の曲面部３１１と第２の曲面部３２１は、前記第１の組立部１２０と第２の組立部２２０の内側曲率と同様に形成され、前記第１の締結バー３１０と第２の締結バー３２０がそれぞれ、前記第１の組立部１２０と第２の組立部２２０に嵌合、安着させるのがいい。すなわち、第１の平面部３１２と第１の組立部１２０の間、第２の平面部３２２と第２の組立部２２０の間に間隔がないと、空気の流動が、前記第１の平面部３１２と第２の平面部３２２のみに沿って流れるので、抵抗が最小化される。 The first curved surface portion 311 and the second curved surface portion 321 are formed to have the same inner curvature as the first assembly portion 120 and the second assembly portion 220. Preferably, the fastening bars 320 are fitted and seated in the first assembly part 120 and the second assembly part 220, respectively. That is, if there is no space between the first planar portion 312 and the first assembly portion 120 and between the second planar portion 322 and the second assembly portion 220, air flow will Since it flows only along 312 and second planar portion 322, resistance is minimized.

また、前記締結ボルト３３０の頭は、前記第１の締結バー３１０と第２の締結バー３２０に埋設するようにして、前記第１の平面部３１２と第２の平面部３２２から突出しないようにすることで、空気の抵抗を最小化することができる。 In addition, the head of the fastening bolt 330 is embedded in the first fastening bar 310 and the second fastening bar 320 so as not to protrude from the first plane portion 312 and the second plane portion 322 . This will minimize air resistance.

すなわち、前記締結ボルト３３０の頭の上面と、前記第１の平面部３１２及び第２の平面部３２２とが、同一平面に配置されるようにする。 That is, the upper surface of the head of the fastening bolt 330, the first plane portion 312 and the second plane portion 322 are arranged on the same plane.

以上、図面を参照して、本発明の代表的な実施例を説明したが、本発明が属する分野における通常の知識を有する者であれば、前記の内容を基に、本発明の範疇内で様々な応用及び変形を行うのが可能である。そのため、本発明の権利範囲は、説明された実施例に限って決められてはいけず、後述する特許請求の範囲だけでなく、この特許請求の範囲と均等なものによって決められる。 The representative embodiments of the present invention have been described above with reference to the drawings. Various applications and modifications are possible. Therefore, the scope of the invention should not be limited to the described embodiments, but should be defined by the following claims, as well as equivalents of those claims.

１００: 第１の支持体
１１０: 第１の密着部
１２０: 第１の組立部
１３０: 第１の弾性部
１４０: 第１の押圧部
１５０: 絶縁体
２００: 第２の支持体
２１０: 第２の密着部
２２０: 第２の組立部
２３０: 第２の弾性部
２４０: 第２の押圧部
２５０: 絶縁体
３００: 組立手段
３１０: 第１の締結バー
３１１: 第１の曲面部
３１２: 第１の平面部
３２０: 第２の締結バー
３２１: 第２の曲面部
３２２: 第２の平面部
３３０: 締結ボルト
Ｐｏ: 外管
Ｐｉ: 内管 100: First support 110: First contact part 120: First assembly part 130: First elastic part 140: First pressing part 150: Insulator 200: Second support 210: Second 220: Second assembly part 230: Second elastic part 240: Second pressing part 250: Insulator 300: Assembly means 310: First fastening bar 311: First curved surface part 312: First flat portion 320: second fastening bar 321: second curved surface portion 322: second flat portion 330: fastening bolt Po: outer tube Pi: inner tube

Claims (2)

半円形状をなし、内管の外周面に密着される第１の密着部、前記第１の密着部の両端から折り曲げられる第１の組立部、前記第１の組立部からそれぞれ内側に延在する第１の弾性部、前記第１の弾性部から延在し、外管の内周面に接触する第１の押圧部からなる帯状の第１の支持体と、半円形状をなし、内管の外周面に密着される第２の密着部、前記第２の密着部の両端から折り曲げられ、前記第１の組立部と対向する第２の組立部、前記第２の組立部からそれぞれ内側に延在する第２の弾性部、前記第２の弾性部から延在し、外管の内周面に接触する第２の押圧部からなる帯状の第２の支持体と、前記第１の組立部と第２の組立部を互いに結合させる組立手段とを含む二重管の支持構造であって、
前記組立手段は、
前記第１の組立部に安着される第１の締結バーと、前記第２の組立部に安着される第２の締結バーと、前記第１の締結バーと第２の締結バーの両端を貫通して締め付けられ、前記第１の締結バーと第２の締結バーに締付け力を加える締結ボルトとからなり、
前記外管と内管の間に流れる空気の抵抗を減少させるために、前記第１の締結バーと第２の締結バーはそれぞれ、前記第１の組立部と第２の組立部に面接触する第１の曲面部及び第２の曲面部と、前記外管に向かう第１の平面部及び第２の平面部とからなり、断面が半円形状であり、
前記第１の支持体と第２の支持体は、ＣＦＲＰ材質からなり、
前記第１の支持体と第２の支持体の外面には、ＧＦＲＰがコートされ、
前記第１の押圧部と第２の押圧部には、ＧＦＲＰ材質からなる静電気防止用の絶縁体が取り付けられる
ことを特徴とする船舶燃料移送用二重管の支持構造。 A first contact portion having a semicircular shape and being in close contact with the outer peripheral surface of the inner tube, a first assembly portion bent from both ends of the first contact portion, and extending inward from the first assembly portion. a first elastic portion extending from the first elastic portion and contacting the inner peripheral surface of the outer tube; a second contact portion that is in close contact with the outer peripheral surface of the pipe; a second assembly portion that is bent from both ends of the second contact portion and faces the first assembly portion; a belt-shaped second support body comprising a second elastic portion extending to the second elastic portion, a second pressing portion extending from the second elastic portion and in contact with the inner peripheral surface of the outer tube; A double tube support structure comprising an assembly and assembly means for coupling the second assembly together,
The assembly means are
A first fastening bar seated on the first assembly part, a second fastening bar seated on the second assembly part, and both ends of the first fastening bar and the second fastening bar a fastening bolt that penetrates and is fastened and applies a fastening force to the first fastening bar and the second fastening bar ,
The first fastening bar and the second fastening bar are in surface contact with the first assembly and the second assembly, respectively, in order to reduce the resistance of the air flowing between the outer tube and the inner tube. It is composed of a first curved surface portion and a second curved surface portion, and a first flat surface portion and a second flat surface portion facing the outer tube, and has a semicircular cross section,
The first support and the second support are made of CFRP material,
The outer surfaces of the first support and the second support are coated with GFRP,
An antistatic insulator made of GFRP material is attached to the first pressing part and the second pressing part.
A support structure for a double pipe for transporting marine fuel, characterized by: 前記締結ボルトの頭は、前記第１の平面部と第２の平面部から突出しないように埋設される
請求項１に記載の船舶燃料移送用二重管の支持構造。
The head of the fastening bolt is embedded so as not to protrude from the first flat portion and the second flat portion.
A support structure for a double pipe for transporting marine fuel according to claim 1 .
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