JPH0217759B2 - - Google Patents
Info
- Publication number
- JPH0217759B2 JPH0217759B2 JP58056918A JP5691883A JPH0217759B2 JP H0217759 B2 JPH0217759 B2 JP H0217759B2 JP 58056918 A JP58056918 A JP 58056918A JP 5691883 A JP5691883 A JP 5691883A JP H0217759 B2 JPH0217759 B2 JP H0217759B2
- Authority
- JP
- Japan
- Prior art keywords
- acoustic
- water tank
- pipe
- flow path
- water
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
- Pipe Accessories (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は水中音消音器に関する。[Detailed description of the invention] Industrial applications The present invention relates to an underwater sound muffler.
従来の技術
従来、パイプ等の流路内でポンプの駆動やキヤ
ビテーシヨン等に起因して発生する水中音は、流
路途中の配管内面に溝を形成することにより消音
するようにされていた。BACKGROUND ART Conventionally, underwater noise generated in a flow path such as a pipe due to driving of a pump, cavitation, etc. has been muffled by forming grooves on the inner surface of the pipe in the middle of the flow path.
発明が解決しようとする問題点
上記のように配管途中の内面に溝を形成する
と、流路内の液体の流れの抵抗を増加させてしま
うという問題点があつた。Problems to be Solved by the Invention When grooves are formed on the inner surface of the piping as described above, there is a problem in that the resistance to the flow of liquid in the channel increases.
本発明はこのような問題点を解消し得る水中音
消音器を提供することを目的とする。 An object of the present invention is to provide an underwater sound muffler that can solve these problems.
問題点を解決するための手段
上記問題点を解決するため、本発明の水中音消
音器は、流路を構成する配管の一部を、その流路
を流れる液体とほぼ等しい音響インピーダンスを
有するとともに上記配管内面と同一断面形状の内
面を有する音響伝達部材で構成し、その外周部に
液体を充填した水槽を設け、該水槽の内壁面に音
響抵抗物を敷設したものである。Means for Solving the Problems In order to solve the above problems, the underwater sound muffler of the present invention includes a part of the piping constituting the flow path that has an acoustic impedance approximately equal to that of the liquid flowing through the flow path. It is composed of an acoustic transmitting member having an inner surface having the same cross-sectional shape as the inner surface of the piping, a water tank filled with liquid is provided on the outer periphery of the member, and an acoustic resistor is laid on the inner wall surface of the water tank.
作 用
上記構成によると、流路内に発生した水中音
は、音響的に透明な音響伝達部材より水槽内に伝
わり、そして音響抵抗物により消散される。この
場合、音響伝達部材の内面は、配管内面と同一断
面形状であるため、流路内の液体の流れ抵抗は増
加しない。Effects According to the above configuration, underwater sound generated in the flow path is transmitted into the water tank through the acoustically transparent sound transmission member, and is dissipated by the acoustic resistor. In this case, since the inner surface of the acoustic transmission member has the same cross-sectional shape as the inner surface of the pipe, the flow resistance of the liquid in the channel does not increase.
実施例
以下、本発明の一実施例を図面に基づいて詳細
に説明する。Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.
図において、１は水２を通すパイプ（流路を構
成する配管）で、該パイプ１の一部は、水２とほ
ぼ等しい音響インピーダンスを有するアクリル
（音響伝達部材）３で構成されている。なお、ア
クリル３とパイプ１との内面は同一断面形状であ
る。４はパイプ１のアクリル３部分の外周部に設
けられた水槽で、該水槽４内には水が充填される
とともに、その内壁面にクサビ状の音響抵抗物５
を敷設されている。音響抵抗物５としては、例え
ば、スチロール、木綿、スポンジ等が用いられ
る。さらに場合によつては音響抵抗物５を補助的
に水槽４内に充填するようにしてもよい。６はパ
イプ１に設けられた一対のフランジで、上記水槽
４を挟持してアクリル３部分の外周部に確実に固
定せしめている。 In the figure, 1 is a pipe (piping constituting a flow path) through which water 2 passes, and a part of the pipe 1 is made of acrylic (acoustic transmission member) 3 having almost the same acoustic impedance as the water 2. Note that the inner surfaces of the acrylic 3 and the pipe 1 have the same cross-sectional shape. 4 is a water tank provided on the outer periphery of the acrylic 3 portion of the pipe 1, and the water tank 4 is filled with water and has a wedge-shaped acoustic resistor 5 on its inner wall surface.
has been laid down. As the acoustic resistor 5, for example, styrene, cotton, sponge, etc. are used. Furthermore, depending on the situation, the water tank 4 may be supplementally filled with the acoustic resistor 5. Reference numeral 6 denotes a pair of flanges provided on the pipe 1, which sandwich the water tank 4 and securely fix it to the outer circumference of the acrylic 3 portion.
なお、このような構成を製作面からみれば、ア
クリル製の内筒と適宜の部材で構成した外筒とを
有する円筒状の水槽をパイプ途中に介装したもの
ということができる。 From a manufacturing perspective, such a configuration can be said to be one in which a cylindrical water tank having an inner tube made of acrylic and an outer tube made of appropriate materials is interposed in the middle of the pipe.
係る構成で、次に動作を説明する。パイプ１内
で発生した水中音は、先ず、パイプ１途中のアク
リル３部分から水槽４内に伝達される。これは、
アクリル３が水２とほぼ等しい音響インピーダン
スを有して、音響的に透明であるからである。そ
して、水槽４内に伝達された水中音は、水槽４内
の水を伝つて音響抵抗物５によつて消散されるこ
ととなる。このとき、音響抵抗物５はクサビ状と
されていることから、その消音効果は特に大き
い。一方、パイプ１中を流れる水２は、何らその
流れを妨げられることなく、アクリル３部分を通
つて行く。 The operation of this configuration will be explained next. Underwater sound generated within the pipe 1 is first transmitted into the aquarium 4 from the acrylic 3 part in the middle of the pipe 1. this is,
This is because the acrylic 3 has almost the same acoustic impedance as the water 2 and is acoustically transparent. The underwater sound transmitted into the water tank 4 is transmitted through the water in the water tank 4 and is dissipated by the acoustic resistor 5. At this time, since the acoustic resistor 5 is wedge-shaped, its noise reduction effect is particularly large. On the other hand, the water 2 flowing through the pipe 1 passes through the acrylic portion 3 without any obstruction in its flow.
発明の効果
以上本発明の構成によれば、音響伝達部材の内
面は配管内面と同一断面形状であるため、流路内
の液体の流れの抵抗を増加させることなく水中音
を消音することができる。また、簡単な構成であ
るので、安価にかつ容易に実施することができ
る。Effects of the Invention According to the configuration of the present invention, the inner surface of the sound transmission member has the same cross-sectional shape as the inner surface of the pipe, so underwater sound can be muffled without increasing the resistance to the flow of liquid in the channel. . Furthermore, since it has a simple configuration, it can be implemented easily and at low cost.
図面は本発明の一実施例を示す水中音消音器の
縦断面図である。
１……パイプ、２……水、３……アクリル、４
……水槽、５……音響抵抗物。
The drawing is a longitudinal sectional view of an underwater sound muffler showing one embodiment of the present invention. 1...Pipe, 2...Water, 3...Acrylic, 4
...Aquarium, 5...Acoustic resistance object.
Claims (1)
れる液体とほぼ等しい音響インピーダンスを有す
るとともに上記配管内面と同一断面形状の内面を
有する音響伝達部材で構成し、その外周部に液体
を充填した水槽を設け、該水槽の内壁面に音響抵
抗物を敷設したことを特徴とする水中音消音器。1. A part of the piping constituting the flow path is constituted by an acoustic transmission member that has almost the same acoustic impedance as the liquid flowing through the flow path and has an inner surface with the same cross-sectional shape as the inner surface of the piping, and the liquid is placed around the outer periphery of the acoustic transmitting member. 1. An underwater sound muffler, comprising: a water tank filled with water; and an acoustic resistor placed on the inner wall of the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58056918A JPS59183190A (en) | 1983-03-31 | 1983-03-31 | Underwater sound silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58056918A JPS59183190A (en) | 1983-03-31 | 1983-03-31 | Underwater sound silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59183190A JPS59183190A (en) | 1984-10-18 |
| JPH0217759B2 true JPH0217759B2 (en) | 1990-04-23 |
Family
ID=13040858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58056918A Granted JPS59183190A (en) | 1983-03-31 | 1983-03-31 | Underwater sound silencer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59183190A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6417600U (en) * | 1987-07-22 | 1989-01-27 | ||
| JPH04297865A (en) * | 1990-10-04 | 1992-10-21 | Mitsubishi Heavy Ind Ltd | Reverberation free water tank |
| CA2648418C (en) * | 2006-04-06 | 2016-01-05 | Weatherford/Lamb, Inc. | Improved performance of permanently installed tubing conveyed seismic arrays using passive acoustic absorbers |
| KR101422113B1 (en) * | 2013-04-26 | 2014-07-22 | 목포해양대학교 산학협력단 | Soundproof wall which has overlapped resonant chambers around air or water passage that makes air or water pass freely |
-
1983
- 1983-03-31 JP JP58056918A patent/JPS59183190A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59183190A (en) | 1984-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2233804A (en) | Fluid silencer | |
| DE69525987D1 (en) | Transmitter-receiver with an acoustic transducer of the earpiece type | |
| ATE61473T1 (en) | DEVICE FOR DETERMINING THE FLOW VELOCITY OF A MEDIUM IN A CYLINDRICAL PIPE. | |
| EP0196812A2 (en) | Hydraulic noise attenuators | |
| IT8423402A0 (en) | PROCEDURE AND ARRANGEMENT FOR THE TRANSMISSION OF SIGNALS IN ULTRASONIC ECHO SOUNDER EQUIPMENT. | |
| ES527654A0 (en) | A TRANSDUCER APPARATUS FOR AN ACOUSTIC WAVE RECEIVED OR TRANSMITTED IN AN EXTERNAL TRANSMISSION MEDIA. | |
| FR2387041A1 (en) | BLOOD PUMP | |
| JPH0217759B2 (en) | ||
| ES2070486T3 (en) | SURFACE WAVE REFLECTOR FILTER. | |
| ES501044A0 (en) | LAYING PROCEDURE OF A MARITIME PIPING, TOGETHER WITH A CORRESPONDING LAYING LINE. | |
| CN210670560U (en) | Sound transmission pipeline and audiphone | |
| SU400808A1 (en) | В П Т Б • '-04? I' 5 '.' '^' '5: отп1 | |
| JPS61132822A (en) | Ultrasonic flowmeter | |
| RU2079814C1 (en) | Ultrasonic piezoconverter for flowmeter | |
| RU94019608A (en) | ULTRASONIC PIEZE CONVERTER | |
| JP2647489B2 (en) | Low noise circulation water tank | |
| JPS571872A (en) | Valve gear | |
| US1809314A (en) | Sound amplifying device | |
| FR2523795A1 (en) | Submersible electroacoustic transducer - comprises liquid filled cylinder housing mechanism and having flexible membrane ends | |
| JPS61197882A (en) | Fluid noise reducer for sea water pump | |
| JPS61133821A (en) | Ultrasonic flowmeter | |
| GB1432632A (en) | Composite acoustic lenses | |
| SHAKER | Transmission of sound through nonuniform circular ducts with compressible mean-flows[Ph. D. Thesis] | |
| JPH0124959B2 (en) | ||
| JPS6417600U (en) |