WO2016103386A1 - Filter structure and flame arrestor - Google Patents

Filter structure and flame arrestor Download PDF

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Publication number
WO2016103386A1
WO2016103386A1 PCT/JP2014/084272 JP2014084272W WO2016103386A1 WO 2016103386 A1 WO2016103386 A1 WO 2016103386A1 JP 2014084272 W JP2014084272 W JP 2014084272W WO 2016103386 A1 WO2016103386 A1 WO 2016103386A1
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Prior art keywords
filter
pipe
inner tube
inner pipe
filter structure
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PCT/JP2014/084272
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French (fr)
Japanese (ja)
Inventor
将之 小林
和臣 阿部
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金子産業株式会社
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Priority to PCT/JP2014/084272 priority Critical patent/WO2016103386A1/en
Publication of WO2016103386A1 publication Critical patent/WO2016103386A1/en

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
    • A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes

Definitions

  • the present invention relates to a filter structure and a frame arrester provided in a flow path through which a fluid passes.
  • a flame arrester that extinguishes the flame is known (for example, see Patent Document 1).
  • the flame arrester described in Patent Document 1 is connected in series in the middle of a pipe constituting the flow path of the combustible gas, and is provided coaxially with the axial direction of the pipe (gas flow direction).
  • a tube body (main body portion) and a flame extinguishing (extinguishing) element (filter) provided inside the tube body are provided.
  • the flame extinguishing element is, for example, a mesh-type element composed of a plurality of wire meshes (mesh) or a crimp ribbon-type element formed by superposing corrugated ribbons and flat ribbons made of thin metal plates and winding them in a spiral shape.
  • this flame extinguishing element is generally formed in a disc shape (or a short cylindrical shape), and allows gas to pass in a direction perpendicular to the circular plane. That is, the flame extinguishing element has a gas passage direction orthogonal to the circular plane thereof installed in parallel with the axial direction of the pipe and the pipe body, and changes the flow direction of the gas flowing into the frame arrester pipe body from the upstream pipe. It is installed so that gas may be circulated linearly toward the piping on the downstream side.
  • the size (diameter, area) of the filter (flame extinguishing element) is set according to the flow rate of the gas flowing through the pipe.
  • a large-diameter filter is used for a pipe having a large flow rate, and as a result, the pipe body incorporating the filter is also enlarged.
  • An object of the present invention is to provide a filter structure and a frame arrester that can suppress an increase in the radial dimension even when the flow rate of a fluid is increased.
  • the filter structure of the present invention is a filter structure provided in a flow path through which a fluid passes, An outer tube, an inner tube provided inside the outer tube via a gap, and a filter provided in a through-hole penetrating the peripheral surface of the inner tube, the inner tube having one end in the axial direction thereof The other end is provided apart from the inside of the outer tube, and the through hole and the filter are provided at predetermined intervals along the circumferential direction of the inner tube.
  • a plurality of filters are provided, and each filter is provided by partitioning the inside of the inner tube and the gap.
  • the sum of the areas of the plurality of filters becomes the fluid passage area, and depending on the number of through holes and filters to be provided
  • the fluid passage area can be set appropriately. That is, the number of through-holes and filters required for a fluid passage area equal to or greater than the area of one filter in which the axial direction of the flow path and the fluid passage direction are provided in parallel as in the prior art are provided. Just do it.
  • the through-hole and the filter can be provided side by side along the axial direction of the inner tube, it is required while suppressing the increase in the radial dimension of the inner tube and the accompanying radial dimension of the outer tube.
  • the fluid passage area can be secured.
  • the plurality of filters are provided such that the passage direction of the fluid in each is along the radial direction of the inner tube, or the passage direction is the radial direction and the axial direction of the inner tube. It is preferable to be provided with an inclination.
  • the surface direction of each filter becomes parallel to the axial direction of the inner tube.
  • An increase in the radial dimension of the outer tube can be further suppressed.
  • the passage direction of the fluid in the plurality of filters is inclined with respect to the radial direction and the axial direction of the inner tube, the radial dimension of the inner tube and the outer tube will be slightly increased, but the fluid flow will be smooth. Can do.
  • the plurality of filters are formed to have the same size and have a common mounting form for the inner tube.
  • a filter with a common element can be used, and manufacturing is performed by reducing the number of filter types. Costs and management costs can be reduced.
  • the inner pipe is composed of a plurality of inner pipe members arranged in parallel in the axial direction and connected to each other, and each of the inner pipe members is provided with the plurality of through holes and a filter. It is preferred that
  • the number of inner tube members to be connected can be appropriately set according to the required fluid passage area of the filter.
  • the fluid passage area can be secured without increasing the diameter of the inner tube and the outer tube.
  • the plurality of inner tube members are connected to each other by a detachable connecting member.
  • the inner pipe members are connected to each other by the detachable connecting member, so that the inner pipe member can be easily attached and detached, and workability at the time of filter installation and maintenance is improved. Can do. Furthermore, if the inner pipe member is connected to the inside of the outer pipe with the same connecting member, the mounting structure of the inner pipe with respect to the outer pipe can be made common.
  • the connecting member an appropriate member such as a clamp, a bolt, or a holding member having a spring property can be used.
  • the outer tube is provided with an opening that penetrates a part of the peripheral surface and a lid that closes the opening.
  • the lid can be opened to access the inner tube inside the outer tube, and the filter can be easily inspected and replaced. Can be implemented.
  • the flame arrester of the present invention includes any one of the filter structures, and the filter is a flame extinguishing element.
  • the same effect as that of the above-described filter structure can be obtained. That is, since it is only necessary to provide a through hole and a flame extinguishing element on the peripheral surface of the inner pipe according to the required fluid passage area, it is possible to increase the radial dimension of the inner pipe and the accompanying radial dimension of the outer pipe. The required fluid passage area can be ensured while suppressing.
  • the filter structure and the frame arrester of the present invention as described above, it is possible to suppress an increase in the radial dimension of the inner pipe and the outer pipe while securing a required fluid passage area. Therefore, when a plurality of pipes are installed side by side in a plant or the like, it is difficult for the tube bodies of the filter structure provided in adjacent pipes to interfere with each other, and the interval between the pipes can be reduced so that the installation space for the pipes can be reduced. Space can be saved.
  • the flame arrester 1 of this embodiment is provided in a piping path (flow path) that allows passage of flammable gas (fluid) in a plant or the like, and propagates in the piping when a flame is generated in the piping. It is installed to extinguish the flame on the way.
  • the frame arrester 1 includes an outer pipe 2 connected to the upstream and downstream pipes, and an inner pipe provided inside the outer pipe 2 via a gap (gap space S2). 3 and a flame extinguishing element 4 that is a filter provided in a through hole 31 that penetrates the peripheral surface of the inner tube 3.
  • the outer tube 2 has a cylindrical outer tube main body 21 extending in the axial direction X, and an upstream side provided on the upstream side of the outer tube main body 21 (one end side in the axial direction X, left side in FIGS. 2 and 3).
  • the upstream flange 22 connected to the pipe and the downstream connected to the downstream pipe provided on the downstream side of the outer pipe main body 21 (the other end side in the axial direction X and the right side in FIGS. 2 and 3).
  • a side flange 23 and an inner pipe connecting portion 24 that extends to the inside of the outer pipe main body 21 continuously to the upstream side flange 22 are formed.
  • the outer tube main body 21 is provided with an opening 25 formed so as to penetrate the peripheral surface thereof, and a lid portion 26 provided so as to be able to be opened and closed by closing the opening 25.
  • the inner pipe 3 is composed of a plurality (two in this embodiment) of inner pipe members 32 arranged in parallel in the axial direction X, and the upstream inner pipe member 32 is connected to the inner pipe of the outer pipe 2.
  • the end of the inner pipe member 32 on the downstream side is connected to the portion 24 and is closed by a closing member 33. That is, the inner tube 3 has one end portion (upstream side) in the axial direction X connected to the inner tube connection portion 24 inside the outer tube 2 and the other end portion (downstream side) separated from the inside of the outer tube 2. Is provided.
  • Such an internal space S1 of the inner pipe 3 communicates with the upstream pipe, and a gap space S2 between the inner pipe 3 and the outer pipe 2 outside the inner pipe 3 communicates with the downstream pipe.
  • the inner pipe member 32 includes a cylindrical inner pipe main body 34 along the axial direction X, and a connecting portion provided in a flange shape on the upstream side and the downstream side of the inner pipe main body 34. 35, a plurality of (four in this embodiment) through-holes 31 provided at predetermined intervals along the circumferential direction of the inner pipe main body 34, and a cylindrical element projecting outward from the periphery of each through-hole 31 It has a holding part 36 and a cap 37 that is screwed into each element holding part 36 from the outside. As shown in FIG.
  • the inner pipe members 32 on the upstream side and the downstream side are in a state where the connecting portions 35 are in contact with each other, and these connecting portions 35 are connected to each other by a clamp 38 as a connecting member from the outside. Connected by tightening.
  • the upstream side inner pipe member 32 has the upstream side connecting part 35 in contact with the inner pipe connecting part 24, and the connecting part 35 and the inner pipe connecting part 24 are outside. Then, it is connected to the outer tube 2 by being tightened by the clamp 38.
  • the inner pipe member 32 on the downstream side is closed by the clamp 38 from the outside in a state in which the closing member 33 is in contact with the connecting portion 35 on the downstream side, thereby closing the closing member 33.
  • the opening on the downstream side is closed by 33.
  • the clamp 38 as described above is provided so as to be detachable from the outside of the outer tube 2 through the opening 25 by opening the lid portion 26 of the outer tube 2.
  • the inner tube member 32 can be taken out of the outer tube 2 through the opening 25 and can be inserted from the outside of the outer tube 2 into the inside.
  • the flame extinguishing element 4 is a crimp ribbon type constituted by superposing corrugated ribbons and flat ribbons made of a thin metal plate and winding them in a spiral shape, and is formed in a disc shape.
  • the flame extinguishing element 4 has both of the disk-shaped planes, with one flat portion 41 facing the inside of the inner tube member 32 and the other flat portion 42 facing the outside of the inner tube member 32. By being supported by the cap 37, it is held by the element holding portion 36 of the inner tube member 32.
  • the flame extinguishing element 4 allows the combustible gas to pass from the flat portion 41 on one side to the flat portion 42 on the other side, that is, the combustible gas in the inner space S1 of the inner tube 3 is passed between the inner tube 3 and the outer tube 2. It is provided to pass toward the gap space S2.
  • the gas travels in the internal space S1 along the axial direction X and is bent outward in the radial direction R of the inner tube 3 and passes through the through hole 31 and the flame extinguishing element 4.
  • the combustible gas that has passed through the flame extinguishing element 4 travels in the gap space S2 along the axial direction X and flows from the outer tube 2 to the downstream piping.
  • the sum of the areas of the plural flame extinguishing elements 4 becomes a fluid passage area.
  • the area can be set appropriately. That is, the number of flame extinguishing elements 4 required for a fluid passage area equal to or greater than the area of one element in which the axial direction of the flow path and the fluid passage direction are provided in parallel as in a conventional frame arrester. May be provided.
  • the results of comparing the diameter dimensions of the outer pipe 2 when the equivalent fluid passage area is secured in the conventional frame arrester and the frame arrester 1 of the present embodiment are shown in Table 1 below.
  • “caliber” is the nominal diameter of the pipe to which the frame arrester is connected
  • “conventional outer diameter” is the outer diameter of the flange portion for connecting the flame extinguishing element in the conventional frame arrester.
  • the “inner tube diameter” is the outermost diameter of the inner tube 3 in the frame arrester 1 of the present embodiment
  • the “outer tube diameter” is the outer diameter of the outer tube 2 in the frame arrester 1
  • the “outer diameter ratio” is The value obtained by dividing the outer tube diameter by the conventional outer diameter.
  • the larger the diameter that is, the greater the flow rate of the combustible gas flowing through the pipe, the fluid passage. Since the outer diameter ratio decreases as the area increases, it can be understood that the increase in the radial dimension of the outer tube 2 can be suppressed. Moreover, even if it is a case where a diameter is small, it turns out that the outer diameter ratio is less than 1, and the radial direction dimension of the outer tube 2 is suppressed.
  • the flame extinguishing elements 4 can be provided side by side along the axial direction X of the inner tube 3, while suppressing the increase in the radial dimension of the inner tube 3 and the accompanying radial dimension of the outer tube 2,
  • the required fluid passage area can be secured.
  • the number of flame extinguishing elements 4 required according to the caliber in Table 1 is 3 for "200A", 5 for "250A", and "300A” There are seven. Accordingly, in the case of “200A”, a maximum of four flame extinguishing elements 4 can be installed by using one inner pipe member 32, and in the case of “250A” and “300A” By connecting the inner pipe member 32, a maximum of eight flame extinguishing elements 4 can be installed.
  • the number of the flame extinguishing elements 4 is set appropriately, so that the flame extinguishing elements 4 can be shared and the individual flame extinguishing elements 4 can be miniaturized. . If the size of the flame extinguishing element 4 and the attachment type to the inner tube 3 are made common, the manufacturing cost and the management cost can be reduced by reducing the number of types of the flame extinguishing elements 4. Furthermore, since the flame extinguishing element 4 is reduced in size, the handling becomes easy, and the workability of installation, replacement, and maintenance can be improved.
  • the inner tube 3 is configured by connecting a plurality of inner tube members 32, the number of inner tube members 32 to be connected can be appropriately set according to the number of flame extinguishing elements 4 required.
  • the fluid passage area can be secured without increasing the diameter of the inner tube 3 and the outer tube 2.
  • the inner pipe members 32 are connected to each other by the clamps 38, and the inner pipe connecting portion 24 and the closing member 33 are also connected to each other by the clamps 38, the inner pipe members 32 can be easily attached and detached, and the flame extinguishing element 4 The workability of installation, replacement and maintenance can be improved.
  • the cover part 26 can be opened and the inner tube
  • the present invention is not limited to the above-described embodiment, and includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.
  • the filter structure of this invention is not restricted to a flame arrester, For installing various filters in a flow path It can be used as a structure.
  • the filtration filter for filtering the specific component contained in gas may be sufficient, and the removal filter for removing the impurity contained in the liquid may be sufficient.
  • the clamp was illustrated as a connection member which connects the inner tube members 32 so that attachment or detachment is possible, not only this but a volt
  • the frame arrester of the present invention is not limited to that shown in FIGS. 1 to 5, but may be the frame arrester 1A shown in FIG.
  • the frame arrester 1A shown in FIG. 6 is formed in a truncated cone shape in which the inner tube main body 34 of the inner tube member 32A is tapered toward the downstream side, and a plurality of through holes are provided along the circumferential direction of the inner tube main body 34. 31 and an element holding part 36 are provided.
  • the flame extinguishing element 4 held by the element holding portion 36 is provided along the inclination direction D in which the passage direction of the combustible gas is inclined in the radial direction R and the axial direction X of the inner tube 3.
  • the combustible gas introduced into the inner space S1 of the inner pipe 3 is bent in the inclination direction D inclined to the downstream side of the radial direction R of the inner pipe 3, passes through the flame extinguishing element 4, and is downstream from the gap space S2. It will be distributed to the piping on the side.

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Abstract

Provided are a filter structure and a flame arrestor, which are each configured so that a radial dimension does not become large even if the flow rate of fluid is set high. A filter structure and a flame arrestor (1) are each provided with: an outer pipe (2); an inner pipe (3) provided within the outer pipe with a gap (S2) therebetween; and flame extinguishing elements (4) serving as filters and provided in through-holes (31) passing through the peripheral surface of the inner pipe. The inner pipe is connected at one end thereof in the axial direction X to the inside of the outer pipe, and the other end of the inner pipe is provided at a distance from the inside of the outer pipe. The through-holes and the flame extinguishing elements are arranged at predetermined intervals in the circumferential direction of the inner pipe. Each of the flame extinguishing elements (4) is provided so as to separate the inside (S1) of the inner pipe and the gap from each other.

Description

フィルタ構造及びフレームアレスタFilter structure and frame arrester
　本発明は、流体を通過させる流路に設けられるフィルタ構造及びフレームアレスタに関する。 The present invention relates to a filter structure and a frame arrester provided in a flow path through which a fluid passes.
　従来、流体を通過させる流路に設けられるフィルタの一種として、流体である可燃性ガスの流路に設けられ、通常はガスを通過させるものの、ガスに火炎が発生した場合は火炎の通過を阻止して消炎するフレームアレスタが知られている（例えば、特許文献１参照）。特許文献１に記載されたフレームアレスタは、可燃性ガスの流路を構成する配管の途中に直列に接続されるものであって、当該配管の軸方向（ガスの流通方向）と同軸に設けられる管体（本体部）と、この管体の内部に設けられる消炎（消焔）エレメント（フィルタ）と、を備えて構成されている。 Conventionally, as a kind of filter that is provided in the flow path that allows fluid to pass through, it is usually provided in the flow path of flammable gas that is fluid. A flame arrester that extinguishes the flame is known (for example, see Patent Document 1). The flame arrester described in Patent Document 1 is connected in series in the middle of a pipe constituting the flow path of the combustible gas, and is provided coaxially with the axial direction of the pipe (gas flow direction). A tube body (main body portion) and a flame extinguishing (extinguishing) element (filter) provided inside the tube body are provided.
　消炎エレメントは、例えば、金網（メッシュ）を複数枚重ねて構成されるメッシュ式のものや、金属薄板製の波形リボンと平形リボンとを重合し渦巻状に巻いて構成されるクリンプリボン式のものなど、各種の形態が利用されている。この消炎エレメントは、その形態に係わらず、概ね全体円盤状（又は短尺の円柱状）に形成され、その円形平面と直交する方向にガスを通過させるようになっている。即ち、消炎エレメントは、その円形平面と直交するガス通過方向が配管及び管体の軸方向と平行に設置され、上流側の配管からフレームアレスタの管体に流入したガスの流通方向を変更することなく、下流側の配管に向かって直線的にガスを流通させるように設置されている。 The flame extinguishing element is, for example, a mesh-type element composed of a plurality of wire meshes (mesh) or a crimp ribbon-type element formed by superposing corrugated ribbons and flat ribbons made of thin metal plates and winding them in a spiral shape. Various forms are used. Regardless of its form, this flame extinguishing element is generally formed in a disc shape (or a short cylindrical shape), and allows gas to pass in a direction perpendicular to the circular plane. That is, the flame extinguishing element has a gas passage direction orthogonal to the circular plane thereof installed in parallel with the axial direction of the pipe and the pipe body, and changes the flow direction of the gas flowing into the frame arrester pipe body from the upstream pipe. It is installed so that gas may be circulated linearly toward the piping on the downstream side.
特開２００７－１７０９１号公報JP 2007-17091 A
　しかしながら、特許文献１に記載されたような従来のフィルタ構造（フレームアレスタ）では、配管を流通するガスの流量に応じてフィルタ（消炎エレメント）のサイズ（直径、面積）が設定されるため、ガスの流量が大きい配管に対しては大径のフィルタを用いることとなり、その結果、フィルタを内蔵する管体も大型化してしまう。このように配管径に対してフィルタ及び管体の径方向寸法が大型化すると、プラント等において複数の配管が並んで設置される場合に、隣り合う管体同士が干渉することから、配管同士の間隔を必要以上に離す必要が生じ、配管の設置空間を圧迫するという問題がある。 However, in the conventional filter structure (frame arrester) described in Patent Document 1, the size (diameter, area) of the filter (flame extinguishing element) is set according to the flow rate of the gas flowing through the pipe. A large-diameter filter is used for a pipe having a large flow rate, and as a result, the pipe body incorporating the filter is also enlarged. Thus, when the radial dimension of the filter and the pipe body is increased with respect to the pipe diameter, when a plurality of pipes are installed side by side in a plant or the like, adjacent pipe bodies interfere with each other. There is a problem that it is necessary to increase the distance more than necessary, and the installation space of the piping is compressed.
　本発明の目的は、流体の大流量化に対しても径方向寸法の大型化を抑制することができるフィルタ構造及びフレームアレスタを提供することにある。 An object of the present invention is to provide a filter structure and a frame arrester that can suppress an increase in the radial dimension even when the flow rate of a fluid is increased.
　本発明のフィルタ構造は、流体を通過させる流路に設けられるフィルタ構造であって、
　外管と、この外管の内部に隙間を介して設けられる内管と、この内管の周面を貫通する貫通孔に設けられるフィルタと、を備え、前記内管は、その軸方向の一端部が前記外管の内部に連結され、他端部が前記外管の内部と離隔して設けられ、前記貫通孔及び前記フィルタは、前記内管の周方向に沿って所定間隔で設けられた複数で構成され、各フィルタがそれぞれ前記内管の内部と前記隙間とを仕切って設けられることを特徴とする。 The filter structure of the present invention is a filter structure provided in a flow path through which a fluid passes,
An outer tube, an inner tube provided inside the outer tube via a gap, and a filter provided in a through-hole penetrating the peripheral surface of the inner tube, the inner tube having one end in the axial direction thereof The other end is provided apart from the inside of the outer tube, and the through hole and the filter are provided at predetermined intervals along the circumferential direction of the inner tube. A plurality of filters are provided, and each filter is provided by partitioning the inside of the inner tube and the gap.
　以上のような本発明によれば、貫通孔及びフィルタを内管の周方向に沿って複数設けたことで、複数のフィルタの面積の合算が流体通過面積となり、設ける貫通孔及びフィルタの数によって流体通過面積を適宜に設定することができる。すなわち、従来のように流路の軸方向と流体通過方向とが平行に設けられた１つのフィルタの面積に対し、それと同等以上の流体通過面積に必要とされる数の貫通孔及びフィルタを設ければよい。この際、内管の軸方向に沿って貫通孔及びフィルタを並べて設けることもできるので、内管の径方向寸法や、それに伴う外管の径方向寸法の大型化を抑制しつつ、必要とされる流体通過面積を確保することができる。 According to the present invention as described above, by providing a plurality of through holes and filters along the circumferential direction of the inner tube, the sum of the areas of the plurality of filters becomes the fluid passage area, and depending on the number of through holes and filters to be provided The fluid passage area can be set appropriately. That is, the number of through-holes and filters required for a fluid passage area equal to or greater than the area of one filter in which the axial direction of the flow path and the fluid passage direction are provided in parallel as in the prior art are provided. Just do it. At this time, since the through-hole and the filter can be provided side by side along the axial direction of the inner tube, it is required while suppressing the increase in the radial dimension of the inner tube and the accompanying radial dimension of the outer tube. The fluid passage area can be secured.
　この際、本発明のフィルタ構造では、前記複数のフィルタは、各々における流体の通過方向が前記内管の径方向に沿って設けられるか、前記通過方向が前記内管の径方向及び軸方向に傾斜して設けられることが好ましい。 At this time, in the filter structure of the present invention, the plurality of filters are provided such that the passage direction of the fluid in each is along the radial direction of the inner tube, or the passage direction is the radial direction and the axial direction of the inner tube. It is preferable to be provided with an inclination.
　このような構成によれば、複数のフィルタにおける流体の通過方向を内管の径方向に沿って設けることで、各フィルタの面方向が内管の軸方向と平行になることから、内管及び外管の径方向寸法の大型化をさらに抑制することができる。また、複数のフィルタにおける流体の通過方向を内管の径方向及び軸方向に傾斜して設ければ、内管及び外管の径方向寸法は若干大きくなるものの、流体の流れを円滑にすることができる。 According to such a configuration, by providing the passage direction of the fluid in the plurality of filters along the radial direction of the inner tube, the surface direction of each filter becomes parallel to the axial direction of the inner tube. An increase in the radial dimension of the outer tube can be further suppressed. Also, if the passage direction of the fluid in the plurality of filters is inclined with respect to the radial direction and the axial direction of the inner tube, the radial dimension of the inner tube and the outer tube will be slightly increased, but the fluid flow will be smooth. Can do.
　さらに、本発明のフィルタ構造では、前記複数のフィルタは、それぞれ同一サイズに形成されるとともに前記内管に対する取付形式が共通化されていることが好ましい。 Furthermore, in the filter structure of the present invention, it is preferable that the plurality of filters are formed to have the same size and have a common mounting form for the inner tube.
　このような構成によれば、複数のフィルタが同一サイズに形成され、その取付形式が共通化されていることで、共通エレメントのフィルタを用いることができ、フィルタの種別数を削減することにより製造コスト及び管理コストが削減できる。 According to such a configuration, since a plurality of filters are formed in the same size and the mounting form is made common, a filter with a common element can be used, and manufacturing is performed by reducing the number of filter types. Costs and management costs can be reduced.
　また、本発明のフィルタ構造では、前記内管は、軸方向に並設されて互いに連結される複数の内管部材で構成され、これら各々の内管部材に前記複数の貫通孔及びフィルタが設けられることが好ましい。 In the filter structure of the present invention, the inner pipe is composed of a plurality of inner pipe members arranged in parallel in the axial direction and connected to each other, and each of the inner pipe members is provided with the plurality of through holes and a filter. It is preferred that
　このような構成によれば、複数の内管部材を連結して内管を構成することで、必要とされるフィルタの流体通過面積に応じて連結する内管部材の数を適宜に設定することで、内管及び外管を大径化させることなく流体通過面積を確保することができる。 According to such a configuration, by connecting a plurality of inner tube members to form an inner tube, the number of inner tube members to be connected can be appropriately set according to the required fluid passage area of the filter. Thus, the fluid passage area can be secured without increasing the diameter of the inner tube and the outer tube.
　さらに、本発明のフィルタ構造では、前記複数の内管部材は、互いに着脱自在な連結部材によって連結されることが好ましい。 Furthermore, in the filter structure of the present invention, it is preferable that the plurality of inner tube members are connected to each other by a detachable connecting member.
　このような構成によれば、内管部材同士が着脱自在な連結部材によって連結されることで、内管部材の着脱が容易に実施でき、フィルタ設置やメンテナンスの際の作業性を良好にすることができる。さらに、外管内部に対しても内管部材が同様の連結部材で連結されるように構成すれば、外管に対する内管の取付構造を共通化することができる。ここで、連結部材としては、クランプやボルト、バネ性を有した挟持部材など、適宜なものが利用可能である。 According to such a configuration, the inner pipe members are connected to each other by the detachable connecting member, so that the inner pipe member can be easily attached and detached, and workability at the time of filter installation and maintenance is improved. Can do. Furthermore, if the inner pipe member is connected to the inside of the outer pipe with the same connecting member, the mounting structure of the inner pipe with respect to the outer pipe can be made common. Here, as the connecting member, an appropriate member such as a clamp, a bolt, or a holding member having a spring property can be used.
　また、本発明のフィルタ構造では、前記外管には、その周面の一部を貫通する開口部と、この開口部を塞ぐ蓋部と、が設けられることが好ましい。 In the filter structure of the present invention, it is preferable that the outer tube is provided with an opening that penetrates a part of the peripheral surface and a lid that closes the opening.
　このような構成によれば、外管に開口部と蓋部とが設けられているので、蓋部を開いて外管内部の内管にアクセスすることができ、フィルタの点検や交換が容易に実施できる。 According to such a configuration, since the opening and the lid are provided in the outer tube, the lid can be opened to access the inner tube inside the outer tube, and the filter can be easily inspected and replaced. Can be implemented.
　一方、本発明のフレームアレスタは、前記いずれかのフィルタ構造を備え、前記フィルタが消炎エレメントであることを特徴とする。 On the other hand, the flame arrester of the present invention includes any one of the filter structures, and the filter is a flame extinguishing element.
　このような本発明のフレームアレスタによれば、前述のフィルタ構造と同様の効果を奏することができる。すなわち、必要とされる流体通過面積に応じて内管の周面に貫通孔及び消炎エレメントを設ければよいので、内管の径方向寸法や、それに伴う外管の径方向寸法の大型化を抑制しつつ、必要とされる流体通過面積を確保することができる。 According to such a frame arrester of the present invention, the same effect as that of the above-described filter structure can be obtained. That is, since it is only necessary to provide a through hole and a flame extinguishing element on the peripheral surface of the inner pipe according to the required fluid passage area, it is possible to increase the radial dimension of the inner pipe and the accompanying radial dimension of the outer pipe. The required fluid passage area can be ensured while suppressing.
　以上のような本発明のフィルタ構造及びフレームアレスタによれば、必要とされる流体通過面積を確保しつつ、内管や外管の径方向寸法の大型化を抑制することができる。従って、プラント等において複数の配管が並んで設置される場合に、隣り合う配管に設けたフィルタ構造の管体同士が干渉しにくくなり、配管同士の間隔を狭めることができて配管の設置空間を省スペース化することができる。 According to the filter structure and the frame arrester of the present invention as described above, it is possible to suppress an increase in the radial dimension of the inner pipe and the outer pipe while securing a required fluid passage area. Therefore, when a plurality of pipes are installed side by side in a plant or the like, it is difficult for the tube bodies of the filter structure provided in adjacent pipes to interfere with each other, and the interval between the pipes can be reduced so that the installation space for the pipes can be reduced. Space can be saved.
本発明の実施形態に係るフレームアレスタを示す斜視図である。It is a perspective view which shows the flame arrester which concerns on embodiment of this invention. 前記フレームアレスタを示す平面図である。It is a top view which shows the said frame arrester. 前記フレームアレスタを示す断面図である。It is sectional drawing which shows the said flame arrester. 前記フレームアレスタの内管を示す分解斜視図である。It is a disassembled perspective view which shows the inner tube | pipe of the said frame arrester. 前記フレームアレスタの内管の連結構造を示す斜視図である。It is a perspective view which shows the connection structure of the inner pipe of the said frame arrester. 本発明の変形例に係るフレームアレスタを示す断面図である。It is sectional drawing which shows the flame arrester which concerns on the modification of this invention.
　以下、本発明の実施形態に係るフレームアレスタを図面に基づいて説明する。本実施形態のフレームアレスタ１は、プラント等において可燃性ガス（流体）を通過させる配管経路（流路）に設けられるものであって、配管内に火炎が発生した場合に、配管内を伝播する火炎を途中で消炎させるために設置されている。図１～３に示すように、フレームアレスタ１は、上流側及び下流側の配管に接続される外管２と、この外管２の内部に隙間（隙間空間Ｓ２）を介して設けられる内管３と、この内管３の周面を貫通する貫通孔３１に設けられるフィルタである消炎エレメント４と、を備えて構成されている。 Hereinafter, a frame arrester according to an embodiment of the present invention will be described with reference to the drawings. The flame arrester 1 of this embodiment is provided in a piping path (flow path) that allows passage of flammable gas (fluid) in a plant or the like, and propagates in the piping when a flame is generated in the piping. It is installed to extinguish the flame on the way. As shown in FIGS. 1 to 3, the frame arrester 1 includes an outer pipe 2 connected to the upstream and downstream pipes, and an inner pipe provided inside the outer pipe 2 via a gap (gap space S2). 3 and a flame extinguishing element 4 that is a filter provided in a through hole 31 that penetrates the peripheral surface of the inner tube 3.
　外管２は、軸方向Ｘに延びる円筒状の外管本体２１と、この外管本体２１の上流側（軸方向Ｘの一端側であり、図２、３の左側）に設けられて上流側の配管に接続される上流側フランジ２２と、外管本体２１の下流側（軸方向Ｘの他端側であり、図２、３の右側）に設けられて下流側の配管に接続される下流側フランジ２３と、上流側フランジ２２に連続して外管本体２１の内部に延びる内管接続部２４と、を有して形成されている。外管本体２１には、その周面を貫通して形成される開口部２５と、この開口部２５を塞いで開閉可能に設けられる蓋部２６と、が設けられている。 The outer tube 2 has a cylindrical outer tube main body 21 extending in the axial direction X, and an upstream side provided on the upstream side of the outer tube main body 21 (one end side in the axial direction X, left side in FIGS. 2 and 3). The upstream flange 22 connected to the pipe and the downstream connected to the downstream pipe provided on the downstream side of the outer pipe main body 21 (the other end side in the axial direction X and the right side in FIGS. 2 and 3). A side flange 23 and an inner pipe connecting portion 24 that extends to the inside of the outer pipe main body 21 continuously to the upstream side flange 22 are formed. The outer tube main body 21 is provided with an opening 25 formed so as to penetrate the peripheral surface thereof, and a lid portion 26 provided so as to be able to be opened and closed by closing the opening 25.
　内管３は、軸方向Ｘに並設されて互いに連結される複数（本実施形態では２個）の内管部材３２で構成され、上流側の内管部材３２が外管２の内管接続部２４に接続され、下流側の内管部材３２の端部は閉塞部材３３によって閉塞されている。即ち、内管３は、その軸方向Ｘの一端部（上流側）が外管２の内部である内管接続部２４に連結され、他端部（下流側）が外管２の内部から離隔して設けられている。このような内管３の内部空間Ｓ１は、上流側の配管に連通され、内管３の外側である外管２との間の隙間空間Ｓ２は、下流側の配管に連通されている。 The inner pipe 3 is composed of a plurality (two in this embodiment) of inner pipe members 32 arranged in parallel in the axial direction X, and the upstream inner pipe member 32 is connected to the inner pipe of the outer pipe 2. The end of the inner pipe member 32 on the downstream side is connected to the portion 24 and is closed by a closing member 33. That is, the inner tube 3 has one end portion (upstream side) in the axial direction X connected to the inner tube connection portion 24 inside the outer tube 2 and the other end portion (downstream side) separated from the inside of the outer tube 2. Is provided. Such an internal space S1 of the inner pipe 3 communicates with the upstream pipe, and a gap space S2 between the inner pipe 3 and the outer pipe 2 outside the inner pipe 3 communicates with the downstream pipe.
　内管部材３２は、図４にも示すように、軸方向Ｘに沿った円筒状の内管本体３４と、この内管本体３４の、上流側及び下流側にフランジ状に設けられた連結部３５と、内管本体３４の周方向に沿って所定間隔で設けられた複数（本実施形態では４箇所）の貫通孔３１と、各貫通孔３１の周縁から外方に突出した円筒状のエレメント保持部３６と、各エレメント保持部３６に外方から螺合するキャップ３７と、を有して構成されている。上流側及び下流側の内管部材３２同士は、図５にも示すように、互いの連結部３５を当接させた状態で、これらの連結部３５同士が外側から連結部材としてのクランプ３８によって締め付けられることで連結される。 As shown in FIG. 4, the inner pipe member 32 includes a cylindrical inner pipe main body 34 along the axial direction X, and a connecting portion provided in a flange shape on the upstream side and the downstream side of the inner pipe main body 34. 35, a plurality of (four in this embodiment) through-holes 31 provided at predetermined intervals along the circumferential direction of the inner pipe main body 34, and a cylindrical element projecting outward from the periphery of each through-hole 31 It has a holding part 36 and a cap 37 that is screwed into each element holding part 36 from the outside. As shown in FIG. 5, the inner pipe members 32 on the upstream side and the downstream side are in a state where the connecting portions 35 are in contact with each other, and these connecting portions 35 are connected to each other by a clamp 38 as a connecting member from the outside. Connected by tightening.
　上流側の内管部材３２は、図３に示すように、その上流側の連結部３５を内管接続部２４に当接させた状態で、これらの連結部３５及び内管接続部２４が外側からクランプ３８によって締め付けられることで、外管２に連結される。下流側の内管部材３２は、その下流側の連結部３５に閉塞部材３３を当接させた状態で、これらの連結部３５及び閉塞部材３３が外側からクランプ３８によって締め付けられることで、閉塞部材３３によって下流側の開口が閉塞される。以上のようなクランプ３８は、外管２の蓋部２６を開放することによって、開口部２５を介して外管２の外部から着脱操作可能に設けられており、クランプ３８を外すことで、各内管部材３２は、開口部２５を介して外管２の外部に取り出し可能、かつ外管２の外部から内部へ挿入可能に構成されている。 As shown in FIG. 3, the upstream side inner pipe member 32 has the upstream side connecting part 35 in contact with the inner pipe connecting part 24, and the connecting part 35 and the inner pipe connecting part 24 are outside. Then, it is connected to the outer tube 2 by being tightened by the clamp 38. The inner pipe member 32 on the downstream side is closed by the clamp 38 from the outside in a state in which the closing member 33 is in contact with the connecting portion 35 on the downstream side, thereby closing the closing member 33. The opening on the downstream side is closed by 33. The clamp 38 as described above is provided so as to be detachable from the outside of the outer tube 2 through the opening 25 by opening the lid portion 26 of the outer tube 2. The inner tube member 32 can be taken out of the outer tube 2 through the opening 25 and can be inserted from the outside of the outer tube 2 into the inside.
　消炎エレメント４は、金属薄板製の波形リボンと平形リボンとを重合し渦巻状に巻いて構成されるクリンプリボン式のものであって、円盤状に形成されている。この消炎エレメント４は、その円盤状の両平面のうち、一方側の平面部４１を内管部材３２の内方に向け、他方側の平面部４２を内管部材３２の外方に向けるとともに、キャップ３７で支持されることによって、内管部材３２のエレメント保持部３６に保持される。消炎エレメント４は、一方側の平面部４１から他方側の平面部４２に向かって可燃性ガスを通過させる、即ち、内管３の内部空間Ｓ１の可燃性ガスを内管３と外管２との隙間空間Ｓ２に向かって通過させるように設けられている。 The flame extinguishing element 4 is a crimp ribbon type constituted by superposing corrugated ribbons and flat ribbons made of a thin metal plate and winding them in a spiral shape, and is formed in a disc shape. The flame extinguishing element 4 has both of the disk-shaped planes, with one flat portion 41 facing the inside of the inner tube member 32 and the other flat portion 42 facing the outside of the inner tube member 32. By being supported by the cap 37, it is held by the element holding portion 36 of the inner tube member 32. The flame extinguishing element 4 allows the combustible gas to pass from the flat portion 41 on one side to the flat portion 42 on the other side, that is, the combustible gas in the inner space S1 of the inner tube 3 is passed between the inner tube 3 and the outer tube 2. It is provided to pass toward the gap space S2.
　以上のフレームアレスタ１によれば、各図に白抜き矢印で示すように、上流側の配管から外管２の内管接続部２４を介して内管３の内部空間Ｓ１に導入された可燃性ガスは、軸方向Ｘに沿って内部空間Ｓ１を進むとともに、内管３の径方向Ｒ外方に曲がって貫通孔３１及び消炎エレメント４を通過する。消炎エレメント４を通過した可燃性ガスは、隙間空間Ｓ２を軸方向Ｘに沿って進み、外管２から下流側の配管へ流通することとなる。従って、上流側の配管内を伝播してきた火炎は、内管３の内部空間Ｓ１に進入したとしても、消炎エレメント４で消炎され、隙間空間Ｓ２及び下流側の配管への火炎の伝播が阻止されるようになっている。 According to the frame arrester 1 described above, as shown by the white arrow in each figure, the combustibility introduced into the internal space S1 of the inner pipe 3 from the upstream pipe through the inner pipe connecting portion 24 of the outer pipe 2. The gas travels in the internal space S1 along the axial direction X and is bent outward in the radial direction R of the inner tube 3 and passes through the through hole 31 and the flame extinguishing element 4. The combustible gas that has passed through the flame extinguishing element 4 travels in the gap space S2 along the axial direction X and flows from the outer tube 2 to the downstream piping. Therefore, even if the flame that has propagated in the upstream pipe enters the internal space S1 of the inner pipe 3, it is extinguished by the flame extinguishing element 4, and the propagation of the flame to the gap space S2 and the downstream pipe is prevented. It has become so.
　以上のような本実施形態によれば、以下のような効果がある。即ち、内管３の周方向に沿って複数の貫通孔３１及び消炎エレメント４が設けられているので、複数の消炎エレメント４の面積の合算が流体通過面積となり、消炎エレメント４の数によって流体通過面積を適宜に設定することができる。すなわち、従来のフレームアレスタのように流路の軸方向と流体通過方向とが平行に設けられた１つのエレメントの面積に対し、それと同等以上の流体通過面積に必要とされる数の消炎エレメント４を設ければよい。 According to this embodiment as described above, there are the following effects. That is, since the plurality of through holes 31 and the flame extinguishing elements 4 are provided along the circumferential direction of the inner tube 3, the sum of the areas of the plural flame extinguishing elements 4 becomes a fluid passage area. The area can be set appropriately. That is, the number of flame extinguishing elements 4 required for a fluid passage area equal to or greater than the area of one element in which the axial direction of the flow path and the fluid passage direction are provided in parallel as in a conventional frame arrester. May be provided.
　ここで、従来のフレームアレスタと本実施形態のフレームアレスタ１とにおいて、同等の流体通過面積を確保した場合の外管２の径寸法を比較した結果を以下の表１に示す。表１において、「口径」は、フレームアレスタが接続される配管の呼び径であり、「従来外径」は、従来のフレームアレスタにおける消炎エレメントを接続するためのフランジ部の外径であり、「内管径」は、本実施形態のフレームアレスタ１における内管３の最外径であり、「外管径」は、フレームアレスタ１における外管２の外径であり、「外径比」は、外管径を従来外径で除した値である。 Here, the results of comparing the diameter dimensions of the outer pipe 2 when the equivalent fluid passage area is secured in the conventional frame arrester and the frame arrester 1 of the present embodiment are shown in Table 1 below. In Table 1, “caliber” is the nominal diameter of the pipe to which the frame arrester is connected, and “conventional outer diameter” is the outer diameter of the flange portion for connecting the flame extinguishing element in the conventional frame arrester. The “inner tube diameter” is the outermost diameter of the inner tube 3 in the frame arrester 1 of the present embodiment, the “outer tube diameter” is the outer diameter of the outer tube 2 in the frame arrester 1, and the “outer diameter ratio” is The value obtained by dividing the outer tube diameter by the conventional outer diameter.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示すように、従来のフレームアレスタと比較して、本実施形態のフレームアレスタ１によれば、口径が大きくなるほど、すなわち、配管に流通される可燃性ガスの流量が大きくなって流体通過面積が大きくなるほど、外径比が小さくなることから、外管２の径方向寸法の大型化を抑制可能であることが判る。また、口径が小さい場合であっても、外径比が１未満になっており、外管２の径方向寸法が抑制されていることが判る。 As shown in Table 1, compared with the conventional flame arrester, according to the flame arrester 1 of the present embodiment, the larger the diameter, that is, the greater the flow rate of the combustible gas flowing through the pipe, the fluid passage. Since the outer diameter ratio decreases as the area increases, it can be understood that the increase in the radial dimension of the outer tube 2 can be suppressed. Moreover, even if it is a case where a diameter is small, it turns out that the outer diameter ratio is less than 1, and the radial direction dimension of the outer tube 2 is suppressed.
　この際、内管３の軸方向Ｘに沿って消炎エレメント４を並べて設けることもできるので、内管３の径方向寸法や、それに伴う外管２の径方向寸法の大型化を抑制しつつ、必要とされる流体通過面積を確保することができる。具体的には、表１の口径に応じて必要とされる消炎エレメント４の数は、「200A」の場合が３個であり、「250A」の場合が５個であり、「300A」の場合が７個である。従って、「200A」の場合には、１個の内管部材３２を用いることで、最大４個の消炎エレメント４が設置可能であり、「250A」及び「300A」の場合には、２個の内管部材３２を接続することで、最大８個の消炎エレメント４を設置することができる。 At this time, since the flame extinguishing elements 4 can be provided side by side along the axial direction X of the inner tube 3, while suppressing the increase in the radial dimension of the inner tube 3 and the accompanying radial dimension of the outer tube 2, The required fluid passage area can be secured. Specifically, the number of flame extinguishing elements 4 required according to the caliber in Table 1 is 3 for "200A", 5 for "250A", and "300A" There are seven. Accordingly, in the case of “200A”, a maximum of four flame extinguishing elements 4 can be installed by using one inner pipe member 32, and in the case of “250A” and “300A” By connecting the inner pipe member 32, a maximum of eight flame extinguishing elements 4 can be installed.
　このように消炎エレメント４の数を適宜に設定することで所定の流体通過面積を確保するようにしたことで、消炎エレメント４を共通化するとともに、個々の消炎エレメント４を小型化することができる。消炎エレメント４のサイズや内管３に対する取付形式が共通化されていれば、消炎エレメント４の種別数を削減することにより製造コスト及び管理コストが削減できる。さらに、消炎エレメント４が小型化されることで、その取扱いが容易になり、設置や交換、メンテナンスの作業性を向上させることができる。 Thus, by setting the number of the flame extinguishing elements 4 appropriately, a predetermined fluid passage area is ensured, so that the flame extinguishing elements 4 can be shared and the individual flame extinguishing elements 4 can be miniaturized. . If the size of the flame extinguishing element 4 and the attachment type to the inner tube 3 are made common, the manufacturing cost and the management cost can be reduced by reducing the number of types of the flame extinguishing elements 4. Furthermore, since the flame extinguishing element 4 is reduced in size, the handling becomes easy, and the workability of installation, replacement, and maintenance can be improved.
　また、内管３が複数の内管部材３２を連結して構成されているので、必要とされる消炎エレメント４の数に応じて連結する内管部材３２の数を適宜に設定することができ、内管３及び外管２を大径化させることなく流体通過面積を確保することができる。さらに、内管部材３２同士がクランプ３８によって連結されるとともに、内管接続部２４及び閉塞部材３３ともクランプ３８によって連結されているので、内管部材３２の着脱が容易に実施でき、消炎エレメント４の設置や交換、メンテナンスの作業性を一層良好にすることができる。また、外管２に開口部２５と蓋部２６とが設けられているので、蓋部２６を開いて外管２内部の内管３にアクセスすることができ、消炎エレメント４の点検や交換が容易に実施できる。 In addition, since the inner tube 3 is configured by connecting a plurality of inner tube members 32, the number of inner tube members 32 to be connected can be appropriately set according to the number of flame extinguishing elements 4 required. The fluid passage area can be secured without increasing the diameter of the inner tube 3 and the outer tube 2. Furthermore, since the inner pipe members 32 are connected to each other by the clamps 38, and the inner pipe connecting portion 24 and the closing member 33 are also connected to each other by the clamps 38, the inner pipe members 32 can be easily attached and detached, and the flame extinguishing element 4 The workability of installation, replacement and maintenance can be improved. Moreover, since the opening part 25 and the cover part 26 are provided in the outer tube | pipe 2, the cover part 26 can be opened and the inner tube | pipe 3 inside the outer tube | pipe 2 can be accessed, and the flame extinguishing element 4 can be inspected and replaced. Easy to implement.
　なお、本発明は、前記実施形態に限定されるものではなく、本発明の目的が達成できる他の構成等を含み、以下に示すような変形等も本発明に含まれる。例えば、前記実施形態では、フィルタとしての消炎エレメント４を有したフレームアレスタ１，１Ａを例示したが、本発明のフィルタ構造は、フレームアレスタに限らず、各種のフィルタを流路に設置するための構造として利用することができる。ここで、フィルタとしては、気体に含まれる特定成分を濾過するための濾過フィルタであってもよいし、液体に含まれる不純物を除去するための除去フィルタであってもよい。また、前記実施形態では、内管部材３２同士を着脱自在に連結する連結部材として、クランプを例示したが、これに限らず、連結部材としてボルトや、バネ性を有した挟持部材なども利用可能である。さらに、内管部材３２同士は、溶接等の固着手段によって連結されてもよい。 It should be noted that the present invention is not limited to the above-described embodiment, and includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention. For example, in the said embodiment, although the flame arrester 1 and 1A which have the flame-extinguishing element 4 as a filter were illustrated, the filter structure of this invention is not restricted to a flame arrester, For installing various filters in a flow path It can be used as a structure. Here, as a filter, the filtration filter for filtering the specific component contained in gas may be sufficient, and the removal filter for removing the impurity contained in the liquid may be sufficient. Moreover, in the said embodiment, although the clamp was illustrated as a connection member which connects the inner tube members 32 so that attachment or detachment is possible, not only this but a volt | bolt, a clamping member with spring property, etc. can be used as a connection member. It is. Further, the inner pipe members 32 may be connected by fixing means such as welding.
　また、本発明のフレームアレスタは、図１～５に示したものに限らず、図６に示すフレームアレスタ１Ａであってもよい。図６に示すフレームアレスタ１Ａは、内管部材３２Ａの内管本体３４が下流側に向かって先細となる円錐台筒状に形成され、この内管本体３４の周方向に沿って複数の貫通孔３１及びエレメント保持部３６が設けられている。このエレメント保持部３６に保持される消炎エレメント４は、その可燃性ガスの通過方向が内管３の径方向Ｒ及び軸方向Ｘに傾斜した傾斜方向Ｄに沿って設けられている。従って、内管３の内部空間Ｓ１に導入された可燃性ガスは、内管３の径方向Ｒよりも下流側に傾斜した傾斜方向Ｄに曲がって消炎エレメント４を通過し、隙間空間Ｓ２から下流側の配管へ流通することとなる。 Further, the frame arrester of the present invention is not limited to that shown in FIGS. 1 to 5, but may be the frame arrester 1A shown in FIG. The frame arrester 1A shown in FIG. 6 is formed in a truncated cone shape in which the inner tube main body 34 of the inner tube member 32A is tapered toward the downstream side, and a plurality of through holes are provided along the circumferential direction of the inner tube main body 34. 31 and an element holding part 36 are provided. The flame extinguishing element 4 held by the element holding portion 36 is provided along the inclination direction D in which the passage direction of the combustible gas is inclined in the radial direction R and the axial direction X of the inner tube 3. Therefore, the combustible gas introduced into the inner space S1 of the inner pipe 3 is bent in the inclination direction D inclined to the downstream side of the radial direction R of the inner pipe 3, passes through the flame extinguishing element 4, and is downstream from the gap space S2. It will be distributed to the piping on the side.
　その他、本発明を実施するための最良の構成、方法などは、以上の記載で開示されているが、本発明は、これに限定されるものではない。すなわち、本発明は、主に特定の実施形態に関して特に図示され、且つ、説明されているが、本発明の技術的思想および目的の範囲から逸脱することなく、以上述べた実施形態に対し、形状、材質、数量、その他の詳細な構成において、当業者が様々な変形を加えることができるものである。従って、上記に開示した形状、材質などを限定した記載は、本発明の理解を容易にするために例示的に記載したものであり、本発明を限定するものではないから、それらの形状、材質などの限定の一部、もしくは全部の限定を外した部材の名称での記載は、本発明に含まれるものである。 In addition, the best configuration and method for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.
　１，１Ａ　フレームアレスタ
　２　　　　外管
　３　　　　内管
　４　　　　消炎エレメント（フィルタ）
　２５　　　開口部
　２６　　　蓋部
　３１　　　貫通孔
　３２，３２Ａ　内管部材
　３８　　　クランプ（連結部材）
　Ｓ１　　　内部空間
　Ｓ２　　　隙間空間（隙間） 1,1A Flame arrester 2 Outer tube 3 Inner tube 4 Flame extinguishing element (filter)
25 Opening portion 26 Lid portion 31 Through- hole 32, 32A Inner tube member 38 Clamp (connection member)
S1 Internal space S2 Gap space (gap)

Claims (7)

  1. 　流体を通過させる流路に設けられるフィルタ構造であって、
    　外管と、この外管の内部に隙間を介して設けられる内管と、この内管の周面を貫通する貫通孔に設けられるフィルタと、を備え、
    　前記内管は、その軸方向の一端部が前記外管の内部に連結され、他端部が前記外管の内部と離隔して設けられ、
    　前記貫通孔及び前記フィルタは、前記内管の周方向に沿って所定間隔で設けられた複数で構成され、各フィルタがそれぞれ前記内管の内部と前記隙間とを仕切って設けられることを特徴とするフィルタ構造。     A filter structure provided in a flow path through which a fluid passes,
    An outer tube, an inner tube provided inside the outer tube via a gap, and a filter provided in a through-hole penetrating the peripheral surface of the inner tube,
    The inner tube has one end in the axial direction connected to the inside of the outer tube, and the other end is provided apart from the inside of the outer tube,
    The through-hole and the filter are composed of a plurality provided at predetermined intervals along the circumferential direction of the inner tube, and each filter is provided by partitioning the inside of the inner tube and the gap. Filter structure to be
  2. 　前記複数のフィルタは、各々における流体の通過方向が前記内管の径方向に沿って設けられるか、前記通過方向が前記内管の径方向及び軸方向に傾斜して設けられることを特徴とする請求項１に記載のフィルタ構造。 Each of the plurality of filters is provided such that a fluid passage direction is provided along a radial direction of the inner tube, or the passage direction is provided so as to be inclined in a radial direction and an axial direction of the inner tube. The filter structure according to claim 1.
  3. 　前記複数のフィルタは、それぞれ同一サイズに形成されるとともに前記内管に対する取付形式が共通化されていることを特徴とする請求項１又は２に記載のフィルタ構造。 The filter structure according to claim 1 or 2, wherein the plurality of filters are formed to have the same size and have a common mounting type with respect to the inner pipe.
  4. 　前記内管は、軸方向に並設されて互いに連結される複数の内管部材で構成され、これら各々の内管部材に前記複数の貫通孔及びフィルタが設けられることを特徴とする請求項１～３のいずれか一項に記載のフィルタ構造。 2. The inner pipe is constituted by a plurality of inner pipe members arranged in parallel in the axial direction and connected to each other, and each of the inner pipe members is provided with the plurality of through holes and a filter. The filter structure according to any one of items 1 to 3.
  5. 　前記複数の内管部材は、互いに着脱自在な連結部材によって連結されることを特徴とする請求項４に記載のフィルタ構造。 The filter structure according to claim 4, wherein the plurality of inner pipe members are connected to each other by a connecting member that is detachable from each other.
  6. 　前記外管には、その周面の一部を貫通する開口部と、この開口部を塞ぐ蓋部と、が設けられることを特徴とする請求項１～５のいずれか一項に記載のフィルタ構造。 The filter according to any one of claims 1 to 5, wherein the outer pipe is provided with an opening that penetrates a part of the peripheral surface thereof and a lid that closes the opening. Construction.
  7. 　請求項１～６のいずれか一項に記載のフィルタ構造を備え、
    　前記フィルタが消炎エレメントであることを特徴とするフレームアレスタ。     A filter structure according to any one of claims 1 to 6,
    A flame arrester, wherein the filter is a flame extinguishing element.
PCT/JP2014/084272 2014-12-25 2014-12-25 Filter structure and flame arrestor WO2016103386A1 (en)

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Publication number Priority date Publication date Assignee Title
JPWO2018078814A1 (en) * 2016-10-28 2019-09-05 金子産業株式会社 Reduction mechanism and frame arrester with reduction mechanism
WO2023136358A1 (en) * 2022-01-17 2023-07-20 三菱ケミカル株式会社 Quenching device, hydrogen production device, hydrogen production method and reactor for photochemical reaction
JP7489536B2 (en) 2020-07-08 2024-05-23 ローズマウント インコーポレイテッド Improved flame interrupter for process equipment.

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JPH04247205A (en) * 1990-11-30 1992-09-03 Pall Corp Filter unit
JPH06114223A (en) * 1992-10-08 1994-04-26 Omi Kogyo Co Ltd Mist recovery device
JP2000153119A (en) * 1998-11-17 2000-06-06 Babcock Hitachi Kk Filter

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FR1373801A (en) * 1963-08-20 1964-10-02 Dry protection device against flashback in gas lines and the like
JPH04247205A (en) * 1990-11-30 1992-09-03 Pall Corp Filter unit
JPH06114223A (en) * 1992-10-08 1994-04-26 Omi Kogyo Co Ltd Mist recovery device
JP2000153119A (en) * 1998-11-17 2000-06-06 Babcock Hitachi Kk Filter

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Publication number Priority date Publication date Assignee Title
JPWO2018078814A1 (en) * 2016-10-28 2019-09-05 金子産業株式会社 Reduction mechanism and frame arrester with reduction mechanism
JP7489536B2 (en) 2020-07-08 2024-05-23 ローズマウント インコーポレイテッド Improved flame interrupter for process equipment.
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WO2023136358A1 (en) * 2022-01-17 2023-07-20 三菱ケミカル株式会社 Quenching device, hydrogen production device, hydrogen production method and reactor for photochemical reaction

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