JP2013160261A - End structure of pipe penetration section - Google Patents

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JP2013160261A
JP2013160261A JP2012020534A JP2012020534A JP2013160261A JP 2013160261 A JP2013160261 A JP 2013160261A JP 2012020534 A JP2012020534 A JP 2012020534A JP 2012020534 A JP2012020534 A JP 2012020534A JP 2013160261 A JP2013160261 A JP 2013160261A
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pipe
dam plate
rubber sheet
gap
piping
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Tomonori Yamada
智紀 山田
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Hitachi GE Nuclear Energy Ltd
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Hitachi GE Nuclear Energy Ltd
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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

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Abstract

PROBLEM TO BE SOLVED: To enable absorption without constraining displacement of a pipe installed in a through hole of a building wall.SOLUTION: In an end structure of a pipe penetration section, a pipe penetrates a through hole formed in a building wall. This structure includes a first dam plate whose one end is fixed to the building wall and the other end is extended and arranged in the through hole, a second dam plate that is arranged to face the first dam plate with a predetermined clearance at its end and is fixed to the pipe, and a rubber sheet arranged to close at least the clearance.

Description

本発明は配管貫通部の仕舞構造に係り、特に、建屋壁面を貫通する配管の気密、水密、防火或いは放射線遮蔽などのシールド条件を満たすものに好適な配管貫通部の仕舞構造に関するものである。   The present invention relates to a closed structure of a pipe penetrating portion, and more particularly to a closed structure of a pipe penetrating portion suitable for satisfying a shielding condition such as airtightness, watertightness, fire prevention or radiation shielding of a pipe penetrating a building wall surface.

一般に、原子力プラント等に設置されている建屋コンクリート壁に貫通孔をあけて配管類を貫通させる際には、境界部を隔てた貫通先の空間に対して、気密、水密、防火或いは放射線遮蔽などのシールド条件を満たすことが要求される。   In general, when making a through hole in a concrete wall of a building installed in a nuclear power plant or the like and penetrating piping, the space of the penetration destination across the boundary is airtight, watertight, fireproof or radiation shielded, etc. It is required to satisfy the shielding conditions of

これらの内、水密条件となる要求がある場合は、貫通孔に埋め込んだ鋼製のスリーブを継足しスリーブで延長し、それにラバーブーツを取り付けるのが一般的である（特許文献１参照）。   Of these, when there is a demand for watertight conditions, it is common to extend a steel sleeve embedded in a through-hole and extend the sleeve with a rubber boot (see Patent Document 1).

特開昭６１−１７５３７４号公報JP-A-61-175374

しかしながら、通常、ラバーブーツは、風雨を防ぐことを目的としており、津波などの高い水圧がかかることは考慮されていない。このため、高い水圧がかかる津波などが来た場合には、その水圧に耐えられず、海水の浸入を防ぎ得ないという問題がある。   However, rubber boots are usually intended to prevent wind and rain, and it is not considered that high water pressure such as tsunami is applied. For this reason, when a tsunami or the like is applied with high water pressure, there is a problem that it cannot withstand the water pressure and cannot prevent the intrusion of seawater.

また、津波などの高い水圧が負荷されても、海水の浸入を防ぐことだけを考慮すれば、アンカープレートやベローズ継手による完全シール構造が挙げられるが、特に、既設設備への仕舞構造追加の場合には、配管との溶接接合のためのバウンダリー改造や、配管を拘束することで新たに生じる配管系の振動モード変更に伴う発生応力の評価が必要になるなど、検討課題が増加することになる。   In addition, even if high water pressure such as tsunami is applied, considering only the prevention of intrusion of seawater, a complete seal structure with anchor plates and bellows joints can be mentioned, but especially when adding a closed structure to existing equipment Will increase the number of issues to be investigated, such as the boundary modification for welding joints with piping and the evaluation of the stress generated by changing the vibration mode of the piping system newly generated by restraining the piping. .

以上の既往構造を採用できない課題の対策として、高い圧力でも耐浸入性が向上でき、且つ、配管を過大に拘束しない配管貫通部の仕舞構造が要求されている。   As a countermeasure against the above-described problems in which the existing structure cannot be adopted, there is a demand for a closed structure of a pipe penetration portion that can improve infiltration resistance even at a high pressure and does not restrict the pipe excessively.

本発明は上述の点に鑑みなされたもので、その目的とするところは、配管変位を拘束することなく吸収可能である配管貫通部の仕舞構造を提供することにある。   This invention is made | formed in view of the above-mentioned point, The place made into the objective is to provide the closing structure of the piping penetration part which can absorb without restraining piping displacement.

本発明の配管貫通部の仕舞構造は、上記目的を達成するために、建屋壁に形成された貫通孔を配管が貫通している構造であって、前記建屋壁に一端が固定され、他端が前記貫通孔内に伸びて配置されている第１のダムプレートと、該第１のダムプレートと端部が所定の隙間をもって相対向するように配置され、前記配管に固定されている第２のダムプレートと、少なくとも前記隙間を塞ぐように配置されたゴムシートとから成ることを特徴とする。   In order to achieve the above-described object, the pipe penetrating structure according to the present invention has a structure in which a pipe passes through a through hole formed in a building wall, and one end is fixed to the building wall, and the other end Is arranged so as to extend in the through hole, and the second dam plate is arranged so that the end portion of the first dam plate and the first dam plate face each other with a predetermined gap, and is fixed to the pipe. A dam plate and at least a rubber sheet disposed so as to close the gap.

本発明によれば、配管変位を拘束することなく吸収可能である配管貫通部の仕舞構造を得ることができる。   ADVANTAGE OF THE INVENTION According to this invention, the final structure of the piping penetration part which can be absorbed, without restraining piping displacement can be obtained.

本発明の配管貫通部の仕舞構造の実施例１を示す断面図である。（実施例１）It is sectional drawing which shows Example 1 of the closing structure of the piping penetration part of this invention. Example 1 図１の左側面図である。（実施例１）It is a left view of FIG. Example 1 本発明の配管貫通部の仕舞構造の実施例２を示す断面図である。（実施例２）It is sectional drawing which shows Example 2 of the closing structure of the piping penetration part of this invention. (Example 2) 本発明の配管貫通部の仕舞構造の実施例３を示す断面図である。（実施例３）It is sectional drawing which shows Example 3 of the closing structure of the piping penetration part of this invention. (Example 3) 図４の左側面図である。（実施例３）FIG. 5 is a left side view of FIG. 4. (Example 3) 本発明の配管貫通部の仕舞構造の実施例３における配管変位例を示す断面図である。（実施例３）It is sectional drawing which shows the pipe displacement example in Example 3 of the closing structure of the pipe penetration part of this invention. (Example 3)

以下、図示した実施例に基づいて、本発明の配管貫通部の仕舞構造を説明する。尚、符号は、各実施例において同一部品には同符号を使用する。   Hereinafter, based on the illustrated embodiment, the final structure of the pipe penetration portion of the present invention will be described. The same reference numerals are used for the same parts in each embodiment.

図１及び図２は、本発明の配管貫通部の仕舞構造の実施例１を示すものである。   1 and 2 show Example 1 of a closed structure of a pipe penetration portion according to the present invention.

該図に示す如く、通常、原子力プラント等においては、建屋コンクリート壁９には貫通孔１１が設けられ、この貫通孔１１に配管１０が配置されている。   As shown in the figure, usually, in a nuclear power plant or the like, a building concrete wall 9 is provided with a through hole 11, and a pipe 10 is arranged in the through hole 11.

そして、本実施例では、建屋コンクリート壁９に第１のダムプレートである鋼製ダムプレート１の一端が固定され、この鋼製ダムプレート１の他端が貫通孔１１内に伸びて配置されている。また、該鋼製ダムプレート１の端部と周状に形成されている所定の隙間ｄをもって相対向するように第２のダムプレートである配管側の鋼製ダムプレート２が配置され、更に、隙間ｄを塞ぐように、水密性の機能を得るためのゴムシート３が配置されている。上記鋼製ダムプレート１及び鋼製ダムプレート２は、半割り構造（図２に、符号１２で示す）になっている。   In this embodiment, one end of the steel dam plate 1 as the first dam plate is fixed to the building concrete wall 9, and the other end of the steel dam plate 1 extends into the through hole 11. Yes. Further, a pipe-side steel dam plate 2 which is a second dam plate is disposed so as to face the end portion of the steel dam plate 1 with a predetermined gap d formed in a circumferential shape. A rubber sheet 3 for obtaining a watertight function is disposed so as to close the gap d. The steel dam plate 1 and the steel dam plate 2 have a halved structure (indicated by reference numeral 12 in FIG. 2).

上記ゴムシート３は、断面Ｌ字状に形成され、その一端（長辺側）がゴムシート固定金具４により鋼製ダムプレート１に、他端（短辺側）がゴムシート固定金具５により配管１０にそれぞれ固定されている。   The rubber sheet 3 has an L-shaped cross section, and one end (long side) is piped to the steel dam plate 1 by a rubber sheet fixing bracket 4 and the other end (short side) is piped to the rubber sheet fixing bracket 5. 10 are respectively fixed.

また、ゴムシート３と鋼製ダムプレート１との取付け部は、ゴムシート固定金具４によりシールされ、更に、ゴムシート３と配管１０との取付け部は、ゴムシート固定金具５によりシールされている。   Further, the mounting portion between the rubber sheet 3 and the steel dam plate 1 is sealed by the rubber sheet fixing bracket 4, and the mounting portion between the rubber sheet 3 and the pipe 10 is sealed by the rubber sheet fixing bracket 5. .

また、鋼製ダムプレート１は、ダムプレート固定用アンカー６にて建屋コンクリート壁９面に取付けられ、ゴムガスケット（図示せず）を介して取り付けることで、シール性能を確保している。配管１０側の鋼製ダムプレート２は、ダムプレート固定用バンド７と一体化して配管１０に固定されている。   In addition, the steel dam plate 1 is attached to the surface of the building concrete wall 9 by a dam plate fixing anchor 6 and is attached via a rubber gasket (not shown) to ensure sealing performance. The steel dam plate 2 on the pipe 10 side is fixed to the pipe 10 integrally with the dam plate fixing band 7.

このような本実施例の配管貫通部の仕舞構造によれば、建屋の相対変位、地震時変位或いは熱膨張変位等が起こったとしても、間隙ｄが形成され、しかも、その隙間ｄ部分をゴムシート３で塞いでいるため、配管１０は変位を拘束することなく吸収可能である。また、ゴムシート３が半割り構造になっているため、既設設備への仕舞構造追加の場合には、配管１０が据付いた状態で取付け工事を実施することができるため、改造規模（コスト）を抑制でき、取外し工事などの保守作業性も効率的に実施できる。   According to such a closed structure of the pipe penetration portion of this embodiment, even if a relative displacement of the building, a displacement at the time of an earthquake, a thermal expansion displacement, or the like occurs, a gap d is formed, and the gap d portion is formed by rubber. Since the sheet 3 is closed, the pipe 10 can absorb the displacement without restricting the displacement. In addition, since the rubber sheet 3 has a half-split structure, when the final structure is added to the existing equipment, the installation work can be performed with the piping 10 installed, so the scale of modification (cost) can be reduced. It can be suppressed and maintenance work such as removal work can be performed efficiently.

図３は、本発明の配管貫通部の仕舞構造の実施例２を示すものである。   FIG. 3 shows a second embodiment of the closing structure of the pipe penetration portion of the present invention.

該図に示す如く、本実施例の構成は、実施例１と略同一であるが、建屋コンクリート壁９側の鋼製ダムプレート１と配管１０側の鋼製ダムプレート２で形成される間隙ｄ部を塞ぐゴムシート３の肉厚を、他のゴムシート３部分より厚くして耐圧性を高めると共に、配管１０の変位に対する追従性を持たせた点が実施例１とは異なる。   As shown in the figure, the configuration of the present embodiment is substantially the same as that of the first embodiment, but the gap d formed by the steel dam plate 1 on the building concrete wall 9 side and the steel dam plate 2 on the piping 10 side. The difference from the first embodiment is that the thickness of the rubber sheet 3 that closes the portion is made thicker than the other rubber sheet 3 portions to increase the pressure resistance, and the followability to the displacement of the pipe 10 is provided.

即ち、本実施例のゴムシート３は、周状の隙間ｄを塞ぐように補強ゴム（肉厚部分）が施された形状となっており、耐圧性が高くなると共に、配管１０が変位したことで隙間ｄが広く開いた場合でも、それに追従できるように、肉厚部分が隙間ｄをカバーできる幅を備えているものである。   That is, the rubber sheet 3 of the present example has a shape in which a reinforcing rubber (thick part) is applied so as to close the circumferential gap d, and the pressure resistance is increased and the pipe 10 is displaced. Thus, even when the gap d is wide, the thick portion has a width that can cover the gap d.

このような本実施例の構成とすることにより、実施例１と同様な効果が得られることは勿論、隙間ｄ部を塞ぐゴムシート３部分が、他の部分より肉厚になっていることから、耐圧性が高く津波による静水頭圧等の高い圧力に耐えられる水密性が得られる。また、配管１０が変位したことで隙間ｄが広く開いた場合でも、それに追従できるため、地震等で配管１０が変位したとしても水密性が損なわれるという心配がなくなる利点がある。   By adopting such a configuration of the present embodiment, the same effects as those of the first embodiment can be obtained, and the rubber sheet 3 portion closing the gap d portion is thicker than the other portions. In addition, it has high pressure resistance and water tightness that can withstand high pressure such as hydrostatic head pressure caused by tsunami. In addition, even when the gap d is widely opened due to the displacement of the pipe 10, it is possible to follow the gap d. Therefore, even if the pipe 10 is displaced due to an earthquake or the like, there is an advantage that there is no concern that the watertightness is impaired.

図４及び図５は、本発明の配管貫通部の仕舞構造の実施例３を示すものである。   4 and 5 show a third embodiment of the closed structure of the pipe penetration portion of the present invention.

該図に示す如く、本実施例の構成は、実施例２と略同一であるが、建屋コンクリート壁９と鋼製ダムプレート１との間及び配管１０と鋼製ダムプレート２との間に、それぞれゴムガスケット８が介在されている点及びゴムシート３が半割り構造（図５に、符号１３で示す）になっている点が実施例２と異なる。   As shown in the figure, the configuration of this example is substantially the same as that of Example 2, but between the building concrete wall 9 and the steel dam plate 1 and between the pipe 10 and the steel dam plate 2, The difference from the second embodiment is that the rubber gasket 8 is interposed and the rubber sheet 3 has a half structure (indicated by reference numeral 13 in FIG. 5).

このような本実施例の構成とすることにより、実施例２と同様な効果が得られることは勿論、建屋コンクリート壁９と鋼製ダムプレート１との間及び配管１０と鋼製ダムプレート２との間に、それぞれゴムガスケット８が介在されていることから、シール性が更に向上する。また、ゴムシート３が半割り構造になっていることから、取外し工事などの保守作業性も効率的に実施できる。   By adopting such a configuration of the present embodiment, the same effects as those of the second embodiment can be obtained, as well as between the building concrete wall 9 and the steel dam plate 1 and between the pipe 10 and the steel dam plate 2. Since the rubber gasket 8 is interposed between the two, the sealing performance is further improved. Further, since the rubber sheet 3 has a half structure, maintenance workability such as removal work can be efficiently performed.

図６に、実施例３における配管１０が変位した場合の例を示す。該図に示す如く、配管１０が変位したことで隙間ｄが広く開いた場合でも、それに追従できるように、ゴムシート３の肉厚部分が隙間ｄをカバーできる幅を備えていることから、配管１０が変位して隙間ｄが広く開いた場合でも、ゴムシート３の肉厚部分が隙間ｄをカバーできるため、地震等で配管１０が変位したとしても水密性が損なわれることが無いことが理解される。   FIG. 6 shows an example when the pipe 10 in the third embodiment is displaced. As shown in the figure, the thick portion of the rubber sheet 3 has a width that can cover the gap d so that the gap d can be followed even when the gap d is wide due to the displacement of the pipe 10. Even when the gap 10 is displaced and the gap d is wide, the thick portion of the rubber sheet 3 can cover the gap d. Therefore, even if the pipe 10 is displaced due to an earthquake or the like, it is understood that the watertightness is not impaired. Is done.

１、２…鋼製ダムプレート、３…ゴムシート、４、５…ゴムシート固定金具、６…ダムプレート固定用アンカー、７…ダムプレート固定用バンド、８…ゴムガスケット、９…建屋コンクリート壁、１０…配管、１１…貫通孔、１２…鋼製ダムプレートの半割り構造、１３…ゴムシートの半割り構造。   1, 2 ... Steel dam plate, 3 ... Rubber sheet, 4, 5 ... Rubber sheet fixing bracket, 6 ... Dam plate fixing anchor, 7 ... Dam plate fixing band, 8 ... Rubber gasket, 9 ... Building concrete wall, DESCRIPTION OF SYMBOLS 10 ... Piping, 11 ... Through-hole, 12 ... Half structure of steel dam plate, 13 ... Half structure of rubber sheet.

Claims (5)

建屋壁に形成された貫通孔を配管が貫通している構造であって、
前記建屋壁に一端が固定され、他端が前記貫通孔内に伸びて配置されている第１のダムプレートと、該第１のダムプレートと端部が所定の隙間をもって相対向するように配置され、前記配管に固定されている第２のダムプレートと、少なくとも前記隙間を塞ぐように配置されたゴムシートとから成ることを特徴とする配管貫通部の仕舞構造。 It has a structure in which piping passes through a through hole formed in the building wall,
A first dam plate having one end fixed to the building wall and the other end extending into the through-hole, and the first dam plate and the end facing each other with a predetermined gap The pipe penetrating structure is composed of a second dam plate fixed to the pipe and a rubber sheet disposed so as to at least close the gap. 請求項１に記載の配管貫通部の仕舞構造において、
前記ゴムシートは、前記隙間部を塞ぐ部分が他の部分より肉厚になっていることを特徴とする配管貫通部の仕舞構造。 In the closing structure of the pipe penetration part according to claim 1,
The above-mentioned rubber sheet has a pipe penetrating part closing structure characterized in that a portion closing the gap is thicker than other portions. 請求項１又は２に記載の配管貫通部の仕舞構造において、
前記ゴムシートは断面Ｌ字状に形成され、その一端が前記第１のダムプレートに、他端が前記配管にそれぞれ固定されていることを特徴とする配管貫通部の仕舞構造。 In the closing structure of the pipe penetration part according to claim 1 or 2,
The rubber sheet is formed in an L-shaped cross section, and one end of the rubber sheet is fixed to the first dam plate and the other end is fixed to the pipe. 請求項１乃至３のいずれか１項に記載の配管貫通部の仕舞構造において、
前記建屋壁と前記第１のダムプレートとの間及び前記配管と前記第２のダムプレートとの間に、それぞれゴムガスケットが介在されていることを特徴とする配管貫通部の仕舞構造。 In the closed structure of the piping penetration part of any one of Claims 1 thru | or 3,
A closed structure of a pipe penetrating portion, wherein rubber gaskets are interposed between the building wall and the first dam plate and between the pipe and the second dam plate, respectively. 請求項１乃至４のいずれか１項に記載の配管貫通部の仕舞構造において、
前記第１及び第２のダムプレートのそれぞれは、半割り構造になっていることを特徴とする配管貫通部の仕舞構造。 In the closed structure of the piping penetration part of any one of Claims 1 thru | or 4,
Each of the first and second dam plates has a halved structure, and the pipe penetrating structure is completed.
JP2012020534A 2012-02-02 2012-02-02 End structure of pipe penetration section Pending JP2013160261A (en)

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CN105155694A (en) * 2015-07-10 2015-12-16 中国核工业华兴建设有限公司 End sealing device for water-stop belt made of water swelling rubber and method for manufacturing end sealing device

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* Cited by examiner, † Cited by third party
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CN105155694A (en) * 2015-07-10 2015-12-16 中国核工业华兴建设有限公司 End sealing device for water-stop belt made of water swelling rubber and method for manufacturing end sealing device
CN105155694B (en) * 2015-07-10 2017-08-08 中国核工业华兴建设有限公司 Rubber waterproof belt with expansion when in water end sealing device and preparation method thereof
CN105119210A (en) * 2015-08-26 2015-12-02 芜湖市凯鑫避雷器有限责任公司 High-voltage wall bushing semiconductor refrigeration device
CN105119215A (en) * 2015-08-26 2015-12-02 芜湖市凯鑫避雷器有限责任公司 Air cooling device for high pressure wall bushing

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