JP5275171B2 - Vibration suppression support - Google Patents

Vibration suppression support Download PDF

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JP5275171B2
JP5275171B2 JP2009191112A JP2009191112A JP5275171B2 JP 5275171 B2 JP5275171 B2 JP 5275171B2 JP 2009191112 A JP2009191112 A JP 2009191112A JP 2009191112 A JP2009191112 A JP 2009191112A JP 5275171 B2 JP5275171 B2 JP 5275171B2
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cylinder
pipe
support
inner cylinder
outer cylinder
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JP2011043201A (en
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洋 片山
正彦 藁科
智一 樋口
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Toshiba Corp
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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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Pipe Accessories (AREA)
  • Springs (AREA)

Description

本発明は、原子力発電用プラントなどの大型プラントの配管、タンクなどの構造物に適用される制振サポートに関する。   The present invention relates to a vibration damping support applied to structures such as piping and tanks of a large plant such as a nuclear power plant.

一般に発電用プラントなどに使用されている配管などの構造物は、温度変化による構造物の熱膨張を緩和するように柔に支持されている。一方、地震時にはこれらの構造物を剛に支持することで構造物に発生する応力を抑制する制振装置が提案されている。   Generally, a structure such as a pipe used in a power generation plant or the like is softly supported so as to alleviate the thermal expansion of the structure due to a temperature change. On the other hand, a vibration damping device has been proposed that suppresses the stress generated in a structure by rigidly supporting these structures during an earthquake.

例えば、配管などの支持に用いられているメカニカルスナバ（機械式防振器）は機械要素により支持方向の変位を回転運動に変換するなど複雑な機構となっている。このため、機械要素が固着して伸縮しなくなることが懸念されており、このメカニカルスナバをインターナルポンプの耐震支持装置に適用する際、固着による過大な荷重がメカニカルスナバに加わった場合の対応策として連結を開放する安全装置を設けたものが提案されている（特許文献１）。   For example, a mechanical snubber (mechanical vibration isolator) used for supporting a pipe or the like has a complicated mechanism such as converting a displacement in a supporting direction into a rotational motion by a mechanical element. For this reason, there is a concern that the mechanical elements will stick and will not expand and contract, and when applying this mechanical snubber to the earthquake resistant support device of the internal pump, countermeasures when excessive load due to sticking is applied to the mechanical snubber The thing which provided the safety device which open | releases connection as is proposed (patent document 1).

また、温度変化による構造物の熱膨張を緩和するように柔に支持する大型の構造物では、例えば、高速増殖炉のタンク型FBRの炉心を支持するものがある。これは、原子炉容器内に配置された炉心を取囲んで前記炉心との間に冷却材である液体金属が存在する環状間隙を形成する筒状体を前記炉心と機械的に分離して設け、前記筒状体を前記原子炉容器に剛な支持部材で取付けている。この支持構造は、炉心のロツキング振動が生じようとしても、環状間隙内の液体金属の慣性抵抗に基づく制振効果により、炉心のロツキング振動が抑制され、且つ環状間隙があることから熱伸縮を許容することができるものとなっている（特許文献２）。   In addition, a large structure that flexibly supports so as to mitigate thermal expansion of the structure due to temperature change includes, for example, a structure that supports the core of a tank type FBR of a fast breeder reactor. This is because a cylindrical body that surrounds the core disposed in the reactor vessel and forms an annular gap between which the liquid metal as a coolant exists is mechanically separated from the core. The cylindrical body is attached to the reactor vessel with a rigid support member. This support structure suppresses the rocking vibration of the core due to the damping effect based on the inertial resistance of the liquid metal in the annular gap, and allows thermal expansion and contraction due to the annular gap, even if the rocking vibration of the core is about to occur. (Patent Document 2).

さらに、このような液体の慣性抵抗を利用したものとして、図４に示すように、原子力発電所や火力発電所などの高温・高圧熱流体を流す高温配管と低温の流体を流す低温配管とを一体化した二重配管の振動を抑制する配管制振装置がある。これは、大口径の外側配管１の内部に小口径の内側配管２を設置した二重配管内に、流体による制振作用を生じさせるための円筒３を設け、その円筒３を複数個の固定部材４で外側配管１または内側配管２に固定したものである。地震の振動や内側配管２内外を流れる流体により、内側配管２が大きく振動する場合、内側配管２と円筒３との間の隙間流体５の圧力が大きくなり、内側配管２全体には振動の方向（加速度方向）と逆方向の大きな力として作用するような流体制振力（前記慣性抵抗）が得られる。このため、内側配管２は振動方向に対して動きが抑制され、配管自体の振動振幅を小さくすることができる（特許文献３）。   Furthermore, as shown in FIG. 4, a high-temperature pipe for flowing high-temperature and high-pressure thermal fluid and a low-temperature pipe for flowing a low-temperature fluid such as a nuclear power plant or a thermal power plant are used as the inertial resistance of such a liquid. There is a pipe damping device that suppresses vibration of the integrated double pipe. This is because a cylinder 3 for producing a vibration damping action by a fluid is provided in a double pipe in which a small-diameter inner pipe 2 is installed inside a large-diameter outer pipe 1, and the cylinder 3 is fixed in a plurality of ways. The member 4 is fixed to the outer pipe 1 or the inner pipe 2. When the inner pipe 2 vibrates greatly due to the vibration of the earthquake or the fluid flowing in and out of the inner pipe 2, the pressure of the gap fluid 5 between the inner pipe 2 and the cylinder 3 increases, and the direction of vibration in the entire inner pipe 2 A flow regime vibration force (the inertial resistance) that acts as a large force opposite to the (acceleration direction) is obtained. Therefore, the movement of the inner pipe 2 is suppressed with respect to the vibration direction, and the vibration amplitude of the pipe itself can be reduced (Patent Document 3).

特開平７−１２９８１号公報JP-A-7-12981 特公平４−２６０７８号公報Japanese Examined Patent Publication No. 4-26078 特開２００４−２５１３５０号公報JP 2004-251350 A

このように従来、機器、配管などの構造物に対して、温度変化による構造物の熱膨張を許し、流体や機械等の振動源や地震などに対しては剛に支持する制振手段が提案されている。   In this way, conventionally, vibration control means that allows thermal expansion of structures due to temperature changes for structures such as equipment and piping, and rigidly supports vibration sources such as fluids and machines and earthquakes has been proposed. Has been.

しかしながら、原子力プラントの配管などに適用されるメカニカルスナバにおいて、高い信頼性を求める場合には万一の固着に対する安全対策を必要とし、かつ十分なメンテナンスも必要となる。さらに、流体中の構造物に対しては、構造物と支持部材の間に狭い流体ギャップを設けて、これによって発生する流体制振力（前記慣性抵抗）によって支持反力を得て振動を抑える提案がなされているが、気中の構造物には適応できないなど特定の構造にしか適用できない問題があった。   However, in a mechanical snubber applied to piping of a nuclear power plant or the like, when high reliability is required, safety measures against sticking are necessary, and sufficient maintenance is also required. Further, for a structure in the fluid, a narrow fluid gap is provided between the structure and the support member, and a support reaction force is obtained by the flow system vibration force (the inertial resistance) generated thereby to suppress the vibration. Proposals have been made, but there are problems that can only be applied to specific structures, such as being unsuitable for structures in the air.

本発明は、上記課題を解決するためになされたものであり、特別な安全対策又はメンテナンスを必要とせず、温度変化による構造物の熱膨張を許し、流動や機械等の振動や地震などに対しては構造物を剛に支持する、汎用性が高く高信頼性の制振サポートを提供することを目的とする。   The present invention has been made to solve the above-described problems, does not require special safety measures or maintenance, allows thermal expansion of the structure due to temperature changes, and is free from vibrations and vibrations of machines and the like. The purpose is to provide a highly versatile and highly reliable vibration damping support that firmly supports the structure.

本発明は上記課題を解決するためになされたもので、本発明に係る制振サポートは、制振対象の配管の外周において前記配管の外径に内径を一致させて設けられる円筒形状の配管固定具と、前記配管固定具の外径より大きい内径を有する内円筒と外円筒からなる二重円筒と、前記内円筒の内部に設けられ、前記内円筒と前記配管固定具とを離間して連結固定する支持部材と、前記外円筒を支持構造物に連結固定する連結部材と、前記二重円筒の間の環状の間隙部に封入される非圧縮性の連成流体と、前記二重円筒の両端部を封止するとともに該二重円筒の相対変位を許容する封止部材と、を備え、前記内円筒と外円筒の少なくとも一方を多重円筒構造とし、各円筒間を環状の間隙部としたものである。 The present invention has been made to solve the above problems, and the vibration damping support according to the present invention is a cylindrical pipe fixing provided on the outer circumference of the pipe to be dampened so that the inner diameter matches the outer diameter of the pipe And a double cylinder comprising an inner cylinder and an outer cylinder having an inner diameter larger than the outer diameter of the pipe fixing tool, and an inner cylinder , the inner cylinder and the pipe fixing tool are separated and connected. A supporting member for fixing, a connecting member for connecting and fixing the outer cylinder to a supporting structure, an incompressible coupled fluid enclosed in an annular gap between the double cylinders, A sealing member that seals both ends and allows relative displacement of the double cylinder, and at least one of the inner cylinder and the outer cylinder has a multi-cylindrical structure, and an annular gap between the cylinders. Is .

本発明によれば、特別な安全対策又はメンテナンスを必要とせず、流体中だけでなく気体中の構造物にも汎用的に適用できる高信頼性の制振サポートを提供することができる。   According to the present invention, it is possible to provide a highly reliable vibration suppression support that can be applied not only to a fluid but also to a structure in a gas without requiring special safety measures or maintenance.

本発明の第１の実施形態に係る制振サポートの全体構成図。The whole block diagram of the vibration suppression support which concerns on the 1st Embodiment of this invention. 図１のＡ−Ａ線での断面図。Sectional drawing in the AA of FIG. 本発明の第２の実施形態に係る制振サポートの全体構成図。The whole block diagram of the vibration suppression support which concerns on the 2nd Embodiment of this invention. 従来の制振サポートの全体構成図。The whole block diagram of the conventional vibration suppression support.

以下、本発明の実施形態について、図面を参照して説明する。
（第１の実施形態）
本第１の実施形態に係る制振サポートを図１、図２を用いて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
The vibration suppression support according to the first embodiment will be described with reference to FIGS.

本実施形態の制振サポートは、図１に示すように、配管８に制振サポートを取付けるための配管固定具９、内円筒１０を配管固定具９に連結固定する支持梁１１、内円筒１０と対向する外円筒１２、これら内円筒１０および外円筒１２の両端部に取付けられる封止部材１３、内円筒１０と外円筒１２の間の環状の間隙部に封入される非圧縮性の連成流体１４、外円筒１２をピンジョイント１５に連結する連結部材１６、一端をピンジョイント１５を介して連結部材１６に連結固定され、他端をピンジョイント１８を介して支持構造物１７に連結固定される支持アーム７とからなっている。ここで、支持構造物１７としては、構造物の壁、タンク、配管の内壁、あるいは外壁などが適用できる。また、配管固定具９と支持梁１１で支持部材を構成し、支持アーム７が連結部材を構成している。   As shown in FIG. 1, the vibration damping support of the present embodiment includes a pipe fixing tool 9 for attaching the vibration damping support to the pipe 8, a support beam 11 for connecting and fixing the inner cylinder 10 to the pipe fixing tool 9, and an inner cylinder 10. The outer cylinder 12 facing each other, the sealing member 13 attached to both ends of the inner cylinder 10 and the outer cylinder 12, and an incompressible coupling enclosed in an annular gap between the inner cylinder 10 and the outer cylinder 12. A connecting member 16 for connecting the fluid 14 and the outer cylinder 12 to the pin joint 15, one end is connected and fixed to the connecting member 16 via the pin joint 15, and the other end is connected and fixed to the support structure 17 via the pin joint 18. And a support arm 7. Here, as the support structure 17, a wall of a structure, a tank, an inner wall of a pipe, an outer wall, or the like can be applied. The pipe fixture 9 and the support beam 11 constitute a support member, and the support arm 7 constitutes a connecting member.

配管固定具９は、円筒状の固定具であって、配管と一体となって変位を吸収する必要があるため、その内面は摩擦抵抗が大きくなるように高硬度のゴム等による表面処理がなされていることが望ましい。   Since the pipe fixture 9 is a cylindrical fixture and needs to absorb displacement by being integrated with the pipe, the inner surface thereof is subjected to surface treatment with a high hardness rubber or the like so as to increase the frictional resistance. It is desirable that

内円筒１０と外円筒１２の両円筒間の環状の間隙部に封入される連成流体１４としては水等の非圧縮性流体が用いられる。封止部材１３にはゴムなどの柔軟な弾性材料を用いて、内円筒１０と外円筒１２の相対変位に追従するように内円筒１０と外円筒１２とを接続する。具体的な接続方法としては、高周波誘導加熱による接着方法、接着剤を用いた架橋ゴムと金属との接着方法、ゴム成形と同時に金属と接着する直接加硫接着方法など公知の方法が用いられる。なお、封止部材１３は、両円筒１０，１２間の連成流体１４が振動時の圧力で過大な変形とならないように材質、寸法を設定する。   An incompressible fluid such as water is used as the coupled fluid 14 sealed in the annular gap between the inner cylinder 10 and the outer cylinder 12. The sealing member 13 is made of a flexible elastic material such as rubber, and the inner cylinder 10 and the outer cylinder 12 are connected so as to follow the relative displacement between the inner cylinder 10 and the outer cylinder 12. As a specific connection method, a known method such as an adhesion method by high frequency induction heating, an adhesion method between a crosslinked rubber and a metal using an adhesive, or a direct vulcanization adhesion method in which an adhesive is adhered to a metal simultaneously with rubber molding is used. Note that the material and dimensions of the sealing member 13 are set so that the coupled fluid 14 between the cylinders 10 and 12 is not excessively deformed by the pressure during vibration.

このように構成された本第１の実施形態において、たとえば配管８に熱膨張による変形が発生しサポート方向（図１における上下方向）に変形した場合には、配管８は内円筒１０と一体に動くことになる。封止部材１３にはゴムなどの柔軟な弾性材料を用いているため、内円筒１０と外円筒１２の距離が自由に変化し、両円筒１０，１２間の間隙部に封入された連成流体１４も環状に移動できる。これにより、制振サポートは熱膨張による変形に伴う相対変位を吸収し柔構造のサポートとして作用することができる。   In the first embodiment configured as described above, for example, when the pipe 8 is deformed due to thermal expansion and deformed in the support direction (vertical direction in FIG. 1), the pipe 8 is integrated with the inner cylinder 10. It will move. Since a flexible elastic material such as rubber is used for the sealing member 13, the distance between the inner cylinder 10 and the outer cylinder 12 can be freely changed, and the coupled fluid sealed in the gap between the cylinders 10 and 12. 14 can also move annularly. Thereby, the vibration damping support can absorb the relative displacement accompanying the deformation due to thermal expansion and can act as a support for the flexible structure.

また、地震が発生した場合には、両円筒１０，１２間の間隙部に封入された連成流体１４によって、内円筒１０と外円筒１２において発生する相対加速度に対し、流体−構造連成力が発生するため、内円筒１０と外円筒１２の相対運動を抑制し剛構造のサポートとして作用する。   When an earthquake occurs, the fluid-structure coupling force against the relative acceleration generated in the inner cylinder 10 and the outer cylinder 12 by the coupled fluid 14 enclosed in the gap between the cylinders 10 and 12. Therefore, the relative movement of the inner cylinder 10 and the outer cylinder 12 is suppressed, and it acts as a support for the rigid structure.

なお、連成流体１４として、水の代わりに、たとえば重液SPT（ポリタングステン酸ナトリウム）を使用した場合には、比重が水の３倍となるため、より大きな支持反力を得ることができるため、装置をさらに小型化することができる。   When the heavy fluid SPT (sodium polytungstate), for example, is used as the coupled fluid 14 instead of water, the specific gravity is three times that of water, so that a larger support reaction force can be obtained. Therefore, the device can be further downsized.

さらに、連成流体１４として、液体金属を採用した場合には、封止部材１３として金属ばねからなる弾性部材で構成することにより、高温環境での使用も可能となる。なお、連成流体１４として、重液SPT（ポリタングステン酸ナトリウム）、液体金属の使用は後述する第２の実施形態においても採用可能である。   Furthermore, when a liquid metal is adopted as the coupled fluid 14, it can be used in a high-temperature environment by configuring the sealing member 13 with an elastic member made of a metal spring. The use of heavy liquid SPT (sodium polytungstate) or liquid metal as the coupling fluid 14 can also be employed in the second embodiment to be described later.

以上説明したように、本第１の実施形態によれば、特別な安全対策又はメンテナンスを必要とせず、流体中だけでなく気体中の構造物にも汎用的に適用できる小型で高信頼性の制振サポートを提供することができる。   As described above, according to the first embodiment, there is no need for special safety measures or maintenance, and it is small and highly reliable that can be applied not only to a fluid but also to a structure in a gas. Vibration suppression support can be provided.

（第２の実施形態）
次に、第２の実施形態に係る制振サポートを図３を用いて説明する。
なお、第１の実施形態と同一の構成には同一の符号を付し、重複する説明は最小限とする。 (Second Embodiment)
Next, a vibration suppression support according to the second embodiment will be described with reference to FIG.
In addition, the same code | symbol is attached | subjected to the structure same as 1st Embodiment, and the overlapping description is made into the minimum.

本第２の実施形態の制振サポートは、図３に示すように、内円筒と外円筒を共に多重円筒構造とし、各円筒間の連成流体１４が封入される環状の間隙部を１層から３層に多層化したものである。第１の実施形態では配管８に制振サポートを取付けるための配管固定具９を使用していたが、本第２の実施形態においては、配管固定具に代えて配管８の軸方向に摺動可能なリニアガイド（すべり支承）１９が設置されている。なお、実施形態１，２のいずれにおいても、制振サポートの設置形態等に応じて配管固定具またはリニアガイドが適用可能である。   As shown in FIG. 3, the vibration damping support of the second embodiment has a multi-cylindrical structure for both the inner cylinder and the outer cylinder, and one layer of an annular gap portion in which the coupled fluid 14 between the cylinders is enclosed. 3 layers. In the first embodiment, the pipe fixture 9 for attaching the vibration damping support to the pipe 8 is used. However, in the second embodiment, the pipe 8 slides in the axial direction instead of the pipe fixture. A possible linear guide 19 is installed. In both of the first and second embodiments, a pipe fixture or a linear guide can be applied depending on the installation form of the vibration damping support.

内円筒１０はリニアガイド１９と支持梁１１により連結固定される。内円筒１０と外円筒１２はそれぞれを例えば金属製の２重の円筒構造により構成され、追設外円筒２０と、内円筒１０に設けられた追設内円筒２１とは連成流体１４が連通できるように、各円筒に設けられた連通口２３を介して互い違いに配置されている。連成流体１４は内円筒１０と外円筒１２と、外円筒１２の側面に取付けられる外円筒側板２２と、外円筒側板２２と内円筒１０との相対変位を吸収するシール部材として機能する封止部材１３によって密封されている。外円筒１２はピンジョイント１５に連結する連結部材１６と、支持構造１７に固定されるピンジョイント１８とを支持アーム７で連結されている。なお、内円筒１０と外円筒１２はいずれか一方を２重の円筒構造、他方を１重の円筒構造により構成することで、連成流体１４が封入される環状の間隙部を２層構造とすることができる。また、内円筒１０と外円筒１２を３重以上の構造とすることも当然可能である。   The inner cylinder 10 is connected and fixed by a linear guide 19 and a support beam 11. Each of the inner cylinder 10 and the outer cylinder 12 has a double cylindrical structure made of metal, for example, and the additional fluid 14 communicates between the additional outer cylinder 20 and the additional inner cylinder 21 provided in the inner cylinder 10. In order to be able to do so, they are alternately arranged via the communication port 23 provided in each cylinder. The coupling fluid 14 is a sealing functioning as an inner cylinder 10, an outer cylinder 12, an outer cylinder side plate 22 attached to a side surface of the outer cylinder 12, and a seal member that absorbs relative displacement between the outer cylinder side plate 22 and the inner cylinder 10. It is sealed by the member 13. In the outer cylinder 12, a connecting member 16 connected to the pin joint 15 and a pin joint 18 fixed to the support structure 17 are connected by the support arm 7. One of the inner cylinder 10 and the outer cylinder 12 has a double cylindrical structure, and the other has a single cylindrical structure, so that the annular gap portion in which the coupled fluid 14 is sealed has a two-layer structure. can do. Of course, the inner cylinder 10 and the outer cylinder 12 may have a triple or more structure.

連成流体１４として、第１の実施形態と同様に、水等の非圧縮性流体が用いられる。また、封止部材１３には積層ゴムなどを用いて配管の径方向のみに柔な構造とし、内円筒１０と外円筒１２の相対変位に追従するようにする。但し、封止部材１３は、内円筒１０と外円筒１２の連成流体１４の振動時の圧力で過大な変形とならないように材質、寸法を設定する。   As the coupled fluid 14, an incompressible fluid such as water is used as in the first embodiment. The sealing member 13 is made of a laminated rubber or the like so as to have a flexible structure only in the radial direction of the pipe so as to follow the relative displacement between the inner cylinder 10 and the outer cylinder 12. However, the material and dimensions of the sealing member 13 are set so that the sealing member 13 is not excessively deformed by the pressure when the coupled fluid 14 of the inner cylinder 10 and the outer cylinder 12 vibrates.

このように構成された本第２の実施形態において、たとえば配管８に熱膨張らよる変形が発生しサポート方向（図３における上下方向）に変形した場合には、配管８は内円管と一体に動くことになる。封止部材１３には積層ゴムなど柔軟な材料を用いているため、内円筒１０と外円筒１２の距離が自由に変化し、内円筒１０と外円筒１２の３層の間隙部に封入された連成流体１４も環状に移動できることから、このような熱変形による相対変位を吸収することができる。   In the second embodiment configured as described above, for example, when the pipe 8 is deformed due to thermal expansion and is deformed in the support direction (vertical direction in FIG. 3), the pipe 8 is integrated with the inner circular pipe. Will move to. Since a flexible material such as laminated rubber is used for the sealing member 13, the distance between the inner cylinder 10 and the outer cylinder 12 can be freely changed, and the sealing member 13 is enclosed in a three-layer gap between the inner cylinder 10 and the outer cylinder 12. Since the coupled fluid 14 can also move in an annular shape, relative displacement due to such thermal deformation can be absorbed.

また、地震が発生した場合には、内円筒１０と外円筒１２の間隙部に封入された連成流体１４によって、内円筒１０と外円筒１２において発生する相対加速度に対し、流体−構造連成力が発生するため、内円筒１０と外円筒１２の相対運動を抑制し剛構造のサポートとして作用する。   When an earthquake occurs, the fluid-structure coupling is performed against the relative acceleration generated in the inner cylinder 10 and the outer cylinder 12 by the coupled fluid 14 sealed in the gap between the inner cylinder 10 and the outer cylinder 12. Since a force is generated, the relative movement of the inner cylinder 10 and the outer cylinder 12 is suppressed, and it acts as a support for a rigid structure.

したがって、本第２の実施形態に係る制振サポートは、第１の実施形態と同様に、配管の熱変形など長周期の変位による変動に対しては柔にサポートして変位を吸収するとともに、流動や機械等の振動源や地震などに対しては、流体−構造連成力によって、構造物を剛に支持することができるほか、連成流体１４が封入される環状の間隙部を多層としていることでより強力な支持力を得ることができる。また、配管８の軸方向に滑るリニアガイド１９が設置されているため、制振サポートのサポート方向と直交する変形には反力を与えず変形を許すことができ、配管自身あるいは、制振サポート自身に過大な力が掛かることを防止できる。   Therefore, the vibration damping support according to the second embodiment, like the first embodiment, softly supports and absorbs displacement due to long-period displacement such as thermal deformation of piping, For vibration sources such as flow and machines, earthquakes, etc., the structure can be rigidly supported by the fluid-structure coupling force, and the annular gap portion in which the coupling fluid 14 is enclosed is formed as a multilayer. It is possible to obtain a stronger support force. In addition, since the linear guide 19 that slides in the axial direction of the pipe 8 is installed, the deformation perpendicular to the support direction of the vibration damping support can be allowed without applying a reaction force, and the pipe itself or the vibration damping support can be allowed. It is possible to prevent excessive force from being applied to itself.

以上説明したように、本第２の実施形態によれば、特別な安全対策又はメンテナンスを必要とせず、流体中だけでなく気体中の構造物にも汎用的に適用できる小型でさらに信頼性の高い制振サポートを提供することができる。   As described above, according to the second embodiment, there is no need for special safety measures or maintenance, and it is small and more reliable that can be applied to not only fluid but also gas structures. High vibration control support can be provided.

１…外側配管、２…内側配管、３…円筒、４…固定部材、５…隙間流体、６…固定基礎、７…支持アーム（連結部材）、８…配管（構造物）、９…配管固定具（支持部材）、１０…内円筒、１１…支持梁（支持部材）、１２…外円筒、１３…封止部材、１４…連成流体、１５，１８…ピンジョイント、１６…連結部材、１７…支持構造物、１９…リニアガイド（すべり支承）（支持部材）、２０…追設外円筒、２１…追設内円筒、２２…外円筒側板、２３…連通口。   DESCRIPTION OF SYMBOLS 1 ... Outer piping, 2 ... Inner piping, 3 ... Cylinder, 4 ... Fixing member, 5 ... Crevice fluid, 6 ... Fixing foundation, 7 ... Support arm (connection member), 8 ... Piping (structure), 9 ... Fixing piping Tool (support member), 10 ... inner cylinder, 11 ... support beam (support member), 12 ... outer cylinder, 13 ... sealing member, 14 ... compound fluid, 15, 18 ... pin joint, 16 ... connecting member, 17 DESCRIPTION OF SYMBOLS ... Support structure, 19 ... Linear guide (slide support) (support member), 20 ... Additional outer cylinder, 21 ... Additional inner cylinder, 22 ... Outer cylinder side plate, 23 ... Communication port.

Claims (5)

制振対象の配管の外周において前記配管の外径に内径を一致させて設けられる円筒形状の配管固定具と、前記配管固定具の外径より大きい内径を有する内円筒と外円筒からなる二重円筒と、前記内円筒の内部に設けられ、前記内円筒と前記配管固定具とを離間して連結固定する支持部材と、前記外円筒を支持構造物に連結固定する連結部材と、前記二重円筒の間の環状の間隙部に封入される非圧縮性の連成流体と、前記二重円筒の両端部を封止するとともに該二重円筒の相対変位を許容する封止部材と、を備え、
前記内円筒と外円筒の少なくとも一方を多重円筒構造とし、各円筒間を環状の間隙部としたことを特徴とする制振サポート。 A cylindrical pipe fixture provided on the outer circumference of the pipe to be damped so as to match the inner diameter with the outer diameter of the pipe; A cylinder, a support member provided inside the inner cylinder, for connecting and fixing the inner cylinder and the pipe fixing tool apart from each other, a connection member for connecting and fixing the outer cylinder to a support structure, and the double An incompressible coupled fluid sealed in an annular gap between the cylinders, and a sealing member that seals both ends of the double cylinder and allows relative displacement of the double cylinder. ,
A vibration damping support, wherein at least one of the inner cylinder and the outer cylinder has a multi-cylindrical structure, and an annular gap is formed between the cylinders . 前記各円筒は内円筒と外円筒とが互い違いに配置され、かつ前記間隙部は各円筒に設けられた連通口により連通していることを特徴とする請求項１に記載の制振サポート。 2. The vibration damping support according to claim 1 , wherein an inner cylinder and an outer cylinder are alternately arranged in each cylinder, and the gap portion communicates with a communication port provided in each cylinder. 前記連成流体は水、またはポリタングステン酸ナトリウム、または液体金属であることを特徴とする請求項１または２に記載の制振サポート。 3. The vibration damping support according to claim 1, wherein the coupled fluid is water, sodium polytungstate, or a liquid metal. 前記封止部材は積層ゴム、または金属ばねからなる弾性部材であることを特徴とする請求項１ないし３のいずれかに記載の制振サポート。 The sealing member damping support according to any one of claims 1 to 3, characterized in that an elastic member made of laminated rubber or metal spring. 前記支持部材はリニアガイドであることを特徴とする請求項１ないし４のいずれかに記載の制振サポ−ト。 Wherein the support member damping support according to any one of 4 to claims 1, characterized in that a linear guide - and.
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