JPH0821586A - Muffling device - Google Patents
Muffling deviceInfo
- Publication number
- JPH0821586A JPH0821586A JP6158568A JP15856894A JPH0821586A JP H0821586 A JPH0821586 A JP H0821586A JP 6158568 A JP6158568 A JP 6158568A JP 15856894 A JP15856894 A JP 15856894A JP H0821586 A JPH0821586 A JP H0821586A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- fluid
- diameter
- flange
- flanges
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、流体機械によって生ず
る機械的な振動や流体の圧力変動に起因する振動による
騒音を防止するために、前記流体機械の配管に装着され
る消音装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silencer mounted on a pipe of a fluid machine in order to prevent noise caused by mechanical vibration caused by the fluid machine or vibration caused by pressure fluctuation of the fluid.
【０００２】[0002]
【従来の技術】ポンプや送風機のような流体機械におい
ては、流体を管路に送り込むときに、流体機械から生ず
る振動の他に流体中を伝播する脈動があり、そのような
振動や脈動が発生すると、管路と共振したり、また管路
から建物の壁、床、天井等に伝わり、固定伝播音とな
り、騒音の問題を生じていた。かかる騒音振動を防止す
る消音装置が、特公昭５６−５００９０号公報等に開示
されている。2. Description of the Related Art In a fluid machine such as a pump or a blower, when a fluid is sent into a pipe, there is a pulsation that propagates in the fluid in addition to the vibration generated from the fluid machine. Then, it resonates with the pipeline or is transmitted from the pipeline to the wall, floor, ceiling, etc. of the building and becomes a fixed propagation sound, which causes a problem of noise. A silencer for preventing such noise and vibration is disclosed in Japanese Patent Publication No. 56-50090.
【０００３】従来の消音装置は、図３に示すように、消
音装置はゴム製で中央径を大きく形成した略球状型５１
のパイプから構成されており、このパイプの一端は入口
配管５２のフランジ部５２’と環状のフランジ５３によ
り挟着されており、他端は出口配管５４のフランジ部５
４’と環状のフランジ５５により挟着され固定されてい
る。そして、消音装置を構成する球状型５１の最小内径
Ｄ2は入口配管５２の内径Ｄ1のＤ2＞２Ｄ1として設計す
る。In a conventional silencer, as shown in FIG. 3, the silencer is a substantially spherical mold 51 made of rubber and having a large central diameter.
Of the inlet pipe 52, one end of which is sandwiched between the flange portion 52 ′ of the inlet pipe 52 and the annular flange 53, and the other end of which is the flange portion 5 of the outlet pipe 54.
4'and the annular flange 55 sandwich and fix. The minimum inner diameter D 2 of the spherical mold 51 that constitutes the silencer is designed so that the inner diameter D 1 of the inlet pipe 52 is D 2 > 2D 1 .
【０００４】この消音装置では、流入した脈動する流体
は２倍以上の内径を有する球状型５１による膨張室で急
膨張し、球形状の内面により脈動流体は乱反射する。そ
して、Ｄ2＞２Ｄ1の構成から、流体の急膨張により脈動
流体の圧力脈動を減衰させ、さらに消音装置は柔らかな
弾性材で形成されているから配管５２を伝播する機械振
動を防止するほかに圧力脈動による体積変動を弾性材に
より吸収する。In this muffler, the pulsating fluid that has flowed in rapidly expands in the expansion chamber of the spherical mold 51 having an inner diameter more than twice, and the pulsating fluid is diffusely reflected by the spherical inner surface. Further, from the configuration of D 2 > 2D 1 , the pressure pulsation of the pulsating fluid is attenuated by the rapid expansion of the fluid, and the silencer is formed of a soft elastic material to prevent mechanical vibration propagating through the pipe 52. In addition, the volume change due to pressure pulsation is absorbed by the elastic material.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記し
た従来の消音装置では圧力脈動をある程度減衰させるこ
とができるが、さらに圧力脈動の減衰したいというが要
望がされている。However, although the above-described conventional silencer can attenuate the pressure pulsation to some extent, there is a demand for further reduction of the pressure pulsation.
【０００６】本発明は、上記した従来の事情に鑑み、圧
力脈動をより減衰することができ、しかも耐久性の優れ
た消音装置を提供することを目的としている。In view of the above-mentioned conventional circumstances, it is an object of the present invention to provide a silencer capable of further attenuating pressure pulsations and having excellent durability.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記目的を達
成するために、流体機械によって生ずる機械的な振動や
流体の圧力変動に起因する振動による騒音を防止するた
めに、前記流体機械の配管に装着される消音装置におい
て、前記配管の間に所定間隔を持って対向配置された１
対のフランジと、該フランジ間に設けられ、前記配管の
径よりも大きい径に形成された弾性材料からなる外胴
と、前記フランジ間に設けられ、前記配管とほぼ同径も
形成されており、複数の開口を備えた金属板からなる内
胴とを有し、該内胴の端部が前記フランジの内壁面に直
接固定されていることを特徴としている。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention aims to prevent noise caused by mechanical vibration caused by a fluid machine or vibration caused by pressure fluctuation of the fluid machine. In a muffler mounted on a pipe, the pipes are arranged to face each other with a predetermined gap between the pipes.
It is provided between a pair of flanges, an outer shell made of an elastic material formed between the flanges and having a diameter larger than the diameter of the pipe, and provided between the flanges, and is also formed to have substantially the same diameter as the pipe. , An inner shell made of a metal plate having a plurality of openings, and an end portion of the inner shell is directly fixed to an inner wall surface of the flange.
【０００８】[0008]
【作用】上記構成によれば、配管の径よりも大きい径に
形成された弾性材料からなる外胴によって流体の急膨張
による脈動流体の圧力脈動を減衰でき、さらに外胴と内
胴の間に流入した流体と内胴内を進んできた流体とが合
流点での位相差を生ずることでの圧力脈動を吸収でき、
しかも内胴の端部が前記フランジの内壁面に直接固定さ
れているので、内胴取り付け部の破損を生じにくくする
ことができる。According to the above construction, the pressure pulsation of the pulsating fluid due to the rapid expansion of the fluid can be damped by the outer shell made of an elastic material having a diameter larger than the diameter of the pipe, and between the outer shell and the inner shell. It is possible to absorb the pressure pulsation due to the phase difference at the confluence point between the inflowing fluid and the fluid traveling in the inner cylinder,
Moreover, since the end portion of the inner case is directly fixed to the inner wall surface of the flange, it is possible to prevent the inner body mounting portion from being damaged.
【０００９】[0009]
【実施例】図１は、本発明に係る一実施例を示す断面図
である。FIG. 1 is a sectional view showing an embodiment according to the present invention.
【００１０】図１において、１は消音装置、２，３は配
管であり、配管２は流体機械（図示せず）に連結された
消音装置１に対する入口配管、配管３は消音装置１に対
する出口配管である。流体は、入口配管２、消音装置１
及び出口配管３の順序の方向に流れる。In FIG. 1, 1 is a silencer, 2 and 3 are pipes, 2 is an inlet pipe for the silencer 1 connected to a fluid machine (not shown), and 3 is an outlet pipe for the silencer 1. Is. The fluid is an inlet pipe 2 and a silencer 1.
And in the order of the outlet pipe 3.
【００１１】消音装置１は、弾性体、本実施例において
はゴム製であって、中央径を大きく形成した略球状型の
外胴としての弾性パイプ４と、金属薄板、本実施例にお
いてはステンレスであって、配管２，３とほぼ同径に形
成された内胴としての金属パイプ５とを有している。こ
の金属パイプ５を設けたことによって、消音装置１内は
弾性パイプ４と金属パイプ５との間の外胴室６と、金属
パイプ５内の内胴室７とが形成された二重構造となって
いる。なお、金属パイプ５には適当な間隔ごとに適当数
の開口８が形成され、外胴室６と内胴室７はこの開口８
を介して連通されている。また、弾性パイプ４の径は最
小径でも配管２，３の径の２倍程度の大きさを有してい
る。The muffler 1 is made of an elastic material, rubber in this embodiment, and an elastic pipe 4 serving as a substantially spherical outer body having a large central diameter and a thin metal plate, in this embodiment stainless steel. In addition, it has a metal pipe 5 as an inner body formed to have substantially the same diameter as the pipes 2 and 3. By providing the metal pipe 5, the silencer 1 has a double structure in which an outer body chamber 6 between the elastic pipe 4 and the metal pipe 5 and an inner body chamber 7 in the metal pipe 5 are formed. Has become. The metal pipe 5 is formed with an appropriate number of openings 8 at appropriate intervals, and the outer body chamber 6 and the inner body chamber 7 are provided with these openings 8.
Are communicated via. Further, the diameter of the elastic pipe 4 is about twice the diameter of the pipes 2 and 3 even if the diameter is the smallest.
【００１２】弾性パイプ４は、その両端がそれぞれボル
トナットによって締着された外胴フランジ９，１０とフ
ランジ１１，１２とにより挟着されており、フランジ１
１，１２はそれぞれ入口及び出口配管２，３のフランジ
部２ａ，３ａと固定されている。他方、金属パイプ５は
図１及び図２に示すように、その一端が放射方向に折り
曲げられてなる立ち上げ部１３が形成され、該立ち上げ
部１３には適当数、本例では３個の孔１４が形成されて
いる。また、上記フランジ１２の内壁面には金属パイプ
５の孔１４に対応する位置にネジ孔が形成され、このネ
ジ孔に金属パイプ５の孔１４を通したネジ１５が螺合さ
れることにより、金属パイプ５がフランジ１２に直接固
定されている。この金属パイプ５の他端は、自由端とな
っており、フランジ１１側に形成された案内凸部１６内
に遊嵌されている。従って、金属パイプ５は一端が自由
端なので、金属パイプ５を介して振動等が伝わる恐れは
ない。Both ends of the elastic pipe 4 are sandwiched by outer body flanges 9 and 10 and flanges 11 and 12 which are fastened by bolts and nuts, respectively.
Reference numerals 1 and 12 are fixed to the flange portions 2a and 3a of the inlet and outlet pipes 2 and 3, respectively. On the other hand, as shown in FIGS. 1 and 2, the metal pipe 5 has a rising portion 13 formed by bending one end thereof in the radial direction, and the rising portion 13 has an appropriate number, three in this example. The hole 14 is formed. Further, a screw hole is formed on the inner wall surface of the flange 12 at a position corresponding to the hole 14 of the metal pipe 5, and a screw 15 passing through the hole 14 of the metal pipe 5 is screwed into this screw hole, The metal pipe 5 is directly fixed to the flange 12. The other end of the metal pipe 5 is a free end and is loosely fitted in a guide protrusion 16 formed on the flange 11 side. Therefore, since one end of the metal pipe 5 is a free end, there is no fear that vibration or the like will be transmitted through the metal pipe 5.
【００１３】かく構成の消音装置１は、配管２，３の径
よりも大きい径に形成された弾性パイプ４によって流体
の急膨張による脈動流体の圧力脈動を減衰でき、さらに
外胴室６に流入した流体と内胴室７を進んできた流体と
が合流点での位相差を生ずることでの圧力脈動を吸収で
き、圧力脈動をより確実に減衰することができる。しか
も、金属パイプ５は立ち上げ部１３を形成してフランジ
１２の内壁面に幅のある面接触をするようにして直接ネ
ジ１５で固定されているので、金属パイプ５の取り付け
部に流体による大きな圧が掛かっても、フランジ１２の
破損が生ずることがない。In the muffler 1 having the above-mentioned structure, the pressure pulsation of the pulsating fluid due to the rapid expansion of the fluid can be attenuated by the elastic pipe 4 formed to have a diameter larger than that of the pipes 2 and 3, and further flows into the outer chamber 6. It is possible to absorb the pressure pulsation due to the phase difference at the confluence point between the generated fluid and the fluid that has advanced through the inner chamber 7, and it is possible to more reliably attenuate the pressure pulsation. Moreover, since the metal pipe 5 forms the rising portion 13 and is directly fixed to the inner wall surface of the flange 12 with the screw 15 so as to make a wide surface contact, a large amount of fluid is applied to the mounting portion of the metal pipe 5. Even if pressure is applied, the flange 12 will not be damaged.
【００１４】[0014]
【発明の効果】請求項１の構成によれば、配管の径より
も大きい径に形成された弾性材料からなる外胴によって
流体の急膨張による脈動流体の圧力脈動を減衰でき、さ
らに外胴と内胴の間に流入した流体と内胴内を進んでき
た流体とが合流点での位相差を生ずることでの圧力脈動
を吸収できる。従って、圧力脈動の大幅な減衰が得られ
る。しかも、内胴の端部が前記フランジの内壁面に直接
固定されているので、内胴取り付け部の破損を生じにく
く、長寿命の消音装置を提供することができる。According to the first aspect of the invention, the pressure pulsation of the pulsating fluid due to the rapid expansion of the fluid can be damped by the outer shell made of an elastic material having a diameter larger than that of the pipe, and the outer shell and It is possible to absorb the pressure pulsation due to the phase difference at the confluence point between the fluid flowing between the inner cylinders and the fluid proceeding in the inner cylinder. Therefore, a significant damping of the pressure pulsations is obtained. Moreover, since the end portion of the inner case is directly fixed to the inner wall surface of the flange, it is possible to provide a long-life silencing device in which the inner case attachment portion is unlikely to be damaged.
【図１】図１は本発明に係る消音装置の一実施例を示す
断面図である。FIG. 1 is a sectional view showing an embodiment of a silencer according to the present invention.
【図２】図２は金属パイプの側面図である。FIG. 2 is a side view of a metal pipe.
【図３】図３は従来の消音装置を示す断面図である。FIG. 3 is a sectional view showing a conventional silencer.
１ 消音装置 ２，３ 配管 ４ 弾性パイプ ５ 金属パイプ ８ 開口 １１，１２ フランジ １３ 立ち上げ部 １５ ネジ 1 Muffler 2, 3 Piping 4 Elastic pipe 5 Metal pipe 8 Opening 11, 12 Flange 13 Start-up part 15 Screw
Claims (1)
流体の圧力変動に起因する振動による騒音を防止するた
めに、前記流体機械の配管に装着される消音装置におい
て、 前記配管の間に所定間隔を持って対向配置された１対の
フランジと、該フランジ間に設けられ、前記配管の径よ
りも大きい径に形成された弾性材料からなる外胴と、前
記フランジ間に設けられ、前記配管とほぼ同径も形成さ
れており、複数の開口を備えた金属板からなる内胴とを
有し、該内胴の端部が前記フランジの内壁面に直接固定
されていることを特徴とする消音装置。1. A silencer attached to a pipe of the fluid machine in order to prevent noise due to mechanical vibration caused by the fluid machine or vibration caused by pressure fluctuation of the fluid, wherein a predetermined interval is provided between the pipes. A pair of flanges that are arranged opposite to each other, an outer shell made of an elastic material formed between the flanges and having a diameter larger than the diameter of the pipe, and the pipe provided between the flanges. A sound deadening characterized in that it also has an inner cylinder made of a metal plate having a plurality of openings and having substantially the same diameter, and the end of the inner cylinder is directly fixed to the inner wall surface of the flange. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6158568A JPH0821586A (en) | 1994-07-11 | 1994-07-11 | Muffling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6158568A JPH0821586A (en) | 1994-07-11 | 1994-07-11 | Muffling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0821586A true JPH0821586A (en) | 1996-01-23 |
Family
ID=15674543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6158568A Pending JPH0821586A (en) | 1994-07-11 | 1994-07-11 | Muffling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0821586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009066411A1 (en) * | 2007-11-22 | 2009-05-28 | Tozen Corporation | Quick closing check valve with noise elimination function |
-
1994
- 1994-07-11 JP JP6158568A patent/JPH0821586A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009066411A1 (en) * | 2007-11-22 | 2009-05-28 | Tozen Corporation | Quick closing check valve with noise elimination function |
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