CN109058644B - Rectifier type seawater pipeline silencer with central bag body - Google Patents
Rectifier type seawater pipeline silencer with central bag body Download PDFInfo
- Publication number
- CN109058644B CN109058644B CN201811003200.7A CN201811003200A CN109058644B CN 109058644 B CN109058644 B CN 109058644B CN 201811003200 A CN201811003200 A CN 201811003200A CN 109058644 B CN109058644 B CN 109058644B
- Authority
- CN
- China
- Prior art keywords
- central
- perforated
- seawater
- bag body
- bladder
- 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.)
- Active
Links
Images
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
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
Abstract
The invention discloses a rectifying seawater pipeline silencer with a central bag body, which comprises a central bag body, a perforated central cavity pipe, spherical flow deflectors, perforated manifolds and a shell, wherein the central bag body is positioned in the perforated central cavity pipe, the central bag body is arranged in a hollow mode, the two spherical flow deflectors are respectively positioned on two sides of the central bag body to wrap the end parts of the two spherical flow deflectors in the central bag body, the two spherical flow deflectors are communicated through a plurality of perforated manifolds, the shell is sleeved on the outer sides of the two spherical flow deflectors and the perforated manifolds, an outer cavity is formed by a gap between the shell and the outer side walls of the two spherical flow deflectors and the perforated manifolds, a plurality of water permeable through holes are formed in the perforated manifolds and communicated with the outer cavity to exchange seawater in the outer cavity, and the perforated central cavity pipe is provided with water. The rectifying seawater pipeline silencer with the central bag body can optimize the flow field in the pipeline, reduce hydrodynamic noise of fluid in the pipeline and reduce pressure pulsation of the fluid at the same time.
Description
Technical Field
The invention relates to the field of seawater pipeline vibration noise control, in particular to a rectifier type seawater pipeline silencer with a central bag body.
Background
According to the real ship test result, the vibration noise control of sea water system pipeline is the weak link of naval vessel mechanical noise control, and its radiation noise that arouses can influence naval vessel sound stealth performance, mainly includes two aspects: firstly, the pipeline vibration that fluid pressure pulsation arouses in the pipeline stimulates the hull and then forms acoustic radiation, secondly the hydrodynamic noise of the fluid in the pipeline directly outwards forms acoustic radiation through the topside valve.
Aiming at the problem of vibration noise of a seawater pipeline, a reactive muffler is applied to the pipeline at present, and the purpose of reducing the noise of the pipeline is achieved by utilizing the change of acoustic impedance in the pipeline caused by the expansion (or contraction) of the section of the pipeline to prevent sound waves with certain frequencies from passing through. However, according to the measured data, the insertion loss of the existing silencer is usually between 5-8 dB (100 Hz-2 kHz), and the fluid pulsation which can cause pipeline vibration below 100Hz basically has no attenuation control effect, and has a large difference from the actual requirement.
Disclosure of Invention
The invention mainly aims to provide a rectifier type seawater pipeline silencer with a central bag body, aiming at optimizing a flow field in a pipeline, reducing hydrodynamic noise of fluid in the pipeline and reducing pressure pulsation of the fluid.
To achieve the above objects, the present invention provides a rectifier-type seawater pipeline muffler having a central bladder, comprising a central bladder, a perforated central lumen, a spherical baffle, a perforated manifold, and a housing, wherein,
the central bag body is positioned in the perforated central cavity pipe, the outer wall of the central bag body is tightly attached to the inner wall of the perforated central cavity pipe, the central bag body is arranged in a hollow mode, the two spherical flow deflectors are respectively positioned on two sides of the central bag body to wrap the end parts of the two spherical flow deflectors in the central bag body, the two spherical flow deflectors are communicated through a plurality of perforated manifolds, the outer shell is sleeved on the outer sides of the two spherical flow deflectors and the perforated manifolds, seawater flows out of the other spherical flow deflector through the perforated manifolds after entering the spherical flow deflectors, an outer cavity is formed by the outer shell, a plurality of water permeable through holes are formed in the perforated manifolds and communicated with the outer cavity to exchange seawater in the outer cavity, and the perforated central cavity pipe is provided with water permeable through holes to enable the outer wall of.
Preferably, a plurality of said perforated manifolds are evenly distributed in the circumferential direction of the central bladder.
Preferably, the rectifier-type seawater pipeline muffler with the central balloon further comprises two shunt ellipses which are arranged at the end part of the perforated central cavity and are positioned in the spherical flow guide body, wherein the shunt ellipses are of an ellipsoidal structure, and the two shunt ellipses are respectively connected with two ends of the perforated central cavity.
Preferably, the flow dividing oval head and the perforated central cavity tube are of an integrated structure.
Preferably, the chamber of the central bladder is filled with compressed air.
Preferably, the central bladder is made of rubber.
Preferably, a plurality of water-permeable through holes are arranged on the perforated manifold and the perforated central cavity pipe.
Preferably, the length of the perforated central lumen is greater than the length of the perforated manifold.
Preferably, a first straight pipe section used for introducing seawater and communicated with a chamber of the spherical flow guide body inlet on the inlet side is arranged at the spherical flow guide body outlet on the outlet side, a second straight pipe section used for introducing seawater and communicated with the chamber of the spherical flow guide body outlet on the outlet side is arranged at the spherical flow guide body outlet on the outlet side, and two ends of the shell are respectively connected with the outer side walls of the first straight pipe section and the second straight pipe section.
Preferably, the first straight pipe section and the second straight pipe section are provided with flanges for connecting with a seawater pipeline, and the flanges are provided with a plurality of mounting holes.
The rectifying type seawater pipeline silencer with the central bag body provided by the invention has a good flow guiding effect by the cooperative work of the spherical flow guiding body and the flow dividing oval head, so that the flow field is improved, and the fluid impact is reduced; by utilizing the dissipation function of the perforated manifold and the perforated central cavity tube, hydrodynamic noise of fluid in the tube can be effectively reduced; in addition, the micro-variations in volume of the central bladder attenuate fluid pressure pulsations. By these effects, the insertion loss of the silencer of the rectifier type seawater pipeline exceeds 10dB (10 Hz to 2 kHz), and particularly has a good attenuation effect on the low-frequency pressure pulsation of the fluid.
Drawings
FIG. 1 is a schematic view of a silencer of a rectifier type seawater pipeline with a central bladder according to the present invention;
FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;
fig. 3 is a schematic view of the internal structure of the rectifying seawater pipeline muffler with a central bag body of the present invention after the outer shell is removed.
In the figure, 1-flange, 2-shell, 3-spherical flow guide body, 4-perforated manifold, 5-perforated central cavity pipe, 6-outer cavity, 7-central bag body and 8-flow dividing elliptical head.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 3, in the preferred embodiment, a rectifying seawater pipeline muffler with a central bladder includes a central bladder 7, a perforated central lumen tube 5, a spherical flow conductor 3, a perforated manifold 4, and an outer shell 2. Wherein the content of the first and second substances,
the central bag body 7 is positioned inside the perforated central cavity tube 5, the outer wall of the central bag body 7 is tightly attached to the inner wall of the perforated central cavity tube 5, the central bag body 7 is arranged in a hollow mode, the two spherical flow deflectors 3 are positioned on two sides of the central bag body 7 to wrap the end parts of the two spherical flow deflectors in the central bag body 7, the two spherical flow deflectors 3 are communicated through a plurality of perforated manifolds 4 (six are specifically illustrated in the figure), the outer shell 2 is sleeved outside the two spherical flow deflectors 3 and the perforated manifolds 4, seawater enters through one spherical flow deflector 3 and then flows out from the other spherical flow deflector 3 through the perforated manifold 4, an outer cavity 6 is formed between the outer shell 2 and the outer side walls of the two spherical flow deflectors 3 and the perforated manifolds 4, a plurality of water permeable through holes are formed in the perforated manifolds 4 and communicated with the outer cavity 6 to exchange seawater in the outer cavity 6, and the perforated central cavity tube 5 is provided with.
Further, a plurality of perforated manifolds 4 are uniformly distributed in the circumferential direction of the central bag body 7, so that the silencing effect of the silencer is further improved.
Further, this rectifier-type sea water pipeline silencer with central utricule still includes locates perforation central chamber pipe 5 tip and is located the inside bipartition flow ellipse head 8 of spherical baffle 3 (the both ends of central utricule 7 respectively with two shunt ellipse heads 8 conformal, central utricule 7 outer wall closely laminates with perforation central chamber pipe 5 inner wall), shunt ellipse head 8 is the ellipsoidal structure, bipartition flow ellipse head 8 is connected with the both ends of perforation central chamber pipe 5 respectively. The spherical flow guide body 3 and the flow dividing oval head 8 work cooperatively, so that the silencer has good hydrodynamic performance and can realize good flow guide effect.
Furthermore, the flow dividing oval head 8 and the perforated central cavity tube 5 are of an integrated structure, so that the manufacturing is convenient. After the flow dividing oval head 8 and the perforated central cavity tube 5 jointly form a structure with the same shape as the central sac body 7, the flow dividing oval head and the perforated central cavity tube are sleeved on the outer side of the central sac body 7 together and are tightly attached to the central sac body.
In this embodiment, the chamber of the central bladder 7 is filled with compressed air. The central bag body 7 is made of rubber, so that the volume of the central bag body 7 in the silencer is variable, when fluid flows through a pipeline, the pulsating pressure can cause the volume of the central bag body 7 to be slightly changed, the pulsating pressure peak value is reduced, and the fluid exciting force is reduced. The length of the central bladder 7 is greater than the length of the perforated manifold 4. The outer side wall of the central balloon 7 is closely fitted to the inner side wall of the perforated central lumen 5.
In addition, a plurality of water through holes are arranged on the perforated manifold 4 and the perforated central cavity tube 5. The size and the number of the water permeable through holes are designed according to requirements so as to realize section change, homogenize a seawater flow field and reduce hydrodynamic noise.
In this embodiment, a first straight pipe section for introducing seawater and communicating with a cavity thereof is disposed at an inlet of the spherical flow guide body 3 at the inlet side, a second straight pipe section for introducing seawater and communicating with a cavity thereof is disposed at an outlet of the spherical flow guide body 3 at the outlet side, and two ends of the outer shell 2 are connected to outer sidewalls of the first straight pipe section and the second straight pipe section respectively. The first straight pipe section and the second straight pipe section are provided with flanges 1 used for being connected with a seawater pipeline, and the flanges 1 are provided with a plurality of mounting holes. This seawater pipeline silencer passes through 1 series connection of flange and inserts the seawater pipeline to can carry out miniaturized design according to the space condition, the installation of being convenient for is arranged.
The noise reduction principle of the rectifier type seawater pipeline silencer with the central bag body is as follows.
(1) After incoming flow in a seawater pipeline enters a silencer, axial incoming flow is subjected to uniform splitting in a spherical flow guide body 3 through a splitting ellipse head 8, seawater is introduced into six perforated manifolds 4, and fluid impact is relieved;
(2) in the perforated manifold 4, part of seawater exchanges with seawater in the outer cavity 6 through the water permeable through holes on the pipe, and energy carried by the seawater is attenuated in the process, so that the fluid noise of the pipeline is reduced;
(3) seawater in the outer cavity 6 is in contact with the outer side of the central bag body 7 through the water-permeable through holes on the perforated central cavity tube 5, and the volume of the central bag body 7 is slightly changed under the fluctuation of fluid pressure, so that the pressure pulsation of the fluid is attenuated, the peak value is reduced, and the exciting force is reduced;
(4) the fluid is converged and rectified at the outlet end, so that the generation of vortices can be reduced, and the fluid noise is reduced.
The rectifying type seawater pipeline silencer with the central bag body provided by the embodiment has a good flow guiding effect by the cooperative work of the spherical flow guiding body 3 and the flow dividing oval head 8, so that the flow field is improved, and the fluid impact is reduced; by utilizing the dissipation function of the perforated manifold 4 and the perforated central cavity tube 5, hydrodynamic noise of fluid in the tube can be effectively reduced; in addition, the micro-variations in volume of the central bladder 7 attenuate the fluid pressure pulsations. By these effects, the insertion loss of the silencer of the rectifier type seawater pipeline exceeds 10dB (10 Hz to 2 kHz), and particularly has a good attenuation effect on the low-frequency pressure pulsation of the fluid.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are intended to be covered by the scope of the present invention.
Claims (10)
1. A rectifier-type seawater pipeline silencer with a central balloon body is characterized by comprising the central balloon body, a perforated central cavity pipe, a spherical flow guide body, a perforated manifold and a shell, wherein,
the central bag body is positioned in the perforated central cavity pipe, the outer wall of the central bag body is tightly attached to the inner wall of the perforated central cavity pipe, the central bag body is arranged in a hollow mode, the two spherical flow deflectors are respectively positioned on two sides of the central bag body to wrap the end parts of the two spherical flow deflectors in the central bag body, the two spherical flow deflectors are communicated through a plurality of perforated manifolds, the outer shell is sleeved on the outer sides of the two spherical flow deflectors and the perforated manifolds, seawater flows out of the other spherical flow deflector through the perforated manifolds after entering the spherical flow deflectors, an outer cavity is formed by the outer shell, a plurality of water permeable through holes are formed in the perforated manifolds and communicated with the outer cavity to exchange seawater in the outer cavity, and the perforated central cavity pipe is provided with water permeable through holes to enable the outer wall of.
2. The commutated seawater line muffler having a central bladder of claim 1, wherein a plurality of the perforated manifolds are uniformly distributed in a circumferential direction of the central bladder.
3. The commutating sea water pipeline muffler with a central bladder of claim 1 further comprising two diverging ellipses inside the spherical flow conductor at the end of the perforated central lumen, the diverging ellipses being ellipsoidal in structure and connected to the two ends of the perforated central lumen, respectively.
4. The commutated seawater line muffler having a central bladder of claim 3, wherein the splitter ellipse head is integral with the perforated central lumen.
5. The rectifying seawater line muffler having a central bladder of claim 1 wherein the chamber of the central bladder is filled with compressed air.
6. The commutated seawater line muffler having a central bladder as defined in claim 1, wherein the central bladder is made of rubber.
7. The commutated seawater line muffler having a central bladder of claim 1, wherein the perforated manifold and the perforated central lumen each have a plurality of water-permeable through-holes disposed therein.
8. The rectifying seawater line muffler with a central bladder of claim 1, wherein the length of the perforated central lumen is greater than the length of the perforated manifold.
9. The rectifying seawater pipeline silencer with central bladder of any one of claims 1 to 8 wherein the inlet of the spherical deflector on the inlet side is provided with a first straight pipe section for introducing seawater and communicating with its chamber, the outlet of the spherical deflector on the outlet side is provided with a second straight pipe section for introducing seawater and communicating with its chamber, and both ends of the outer shell are connected with the outer side walls of the first straight pipe section and the second straight pipe section, respectively.
10. The commutating sea water pipeline muffler with a center bladder of claim 9, wherein the first and second straight sections are provided with flanges for connection to the sea water pipeline, the flanges being provided with a plurality of mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003200.7A CN109058644B (en) | 2018-08-30 | 2018-08-30 | Rectifier type seawater pipeline silencer with central bag body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003200.7A CN109058644B (en) | 2018-08-30 | 2018-08-30 | Rectifier type seawater pipeline silencer with central bag body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109058644A CN109058644A (en) | 2018-12-21 |
| CN109058644B true CN109058644B (en) | 2020-06-19 |
Family
ID=64757938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811003200.7A Active CN109058644B (en) | 2018-08-30 | 2018-08-30 | Rectifier type seawater pipeline silencer with central bag body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109058644B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260931B (en) * | 2019-06-18 | 2020-12-11 | 西安航天动力试验技术研究所 | Liquid propellant pipeline flow field quality evaluation system and evaluation method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3744527A (en) * | 1971-08-13 | 1973-07-10 | J Mercier | Pulse damper unit for hydraulic system |
| EP0088739A1 (en) * | 1982-03-10 | 1983-09-14 | Pr Hydraulik Ab | In line integral shock eliminator |
| US4497388A (en) * | 1981-08-25 | 1985-02-05 | Gaulin Corporation | Pulsation dampener and acoustic attenuator |
| US5732741A (en) * | 1996-09-25 | 1998-03-31 | Aeroquip Corporation | Noise suppressor |
| CN201184476Y (en) * | 2008-01-18 | 2009-01-21 | 蔡忠 | Pipeline silencer |
| CN202812636U (en) * | 2012-07-02 | 2013-03-20 | 中国舰船研究设计中心 | Noise reduction device for outlet of ship drainage pipeline |
| CN205479938U (en) * | 2016-04-13 | 2016-08-17 | 张庆阳 | Continuous absorber of pressure fluctuation |
| CN106764222A (en) * | 2017-02-03 | 2017-05-31 | 北京华德创业环保设备有限公司 | Shell and tube fluid flow straightener |
| CN107830281A (en) * | 2017-12-13 | 2018-03-23 | 泰兴市汇辰过滤器制造有限公司 | A kind of vessel reducing connecting hose |
-
2018
- 2018-08-30 CN CN201811003200.7A patent/CN109058644B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3744527A (en) * | 1971-08-13 | 1973-07-10 | J Mercier | Pulse damper unit for hydraulic system |
| US4497388A (en) * | 1981-08-25 | 1985-02-05 | Gaulin Corporation | Pulsation dampener and acoustic attenuator |
| EP0088739A1 (en) * | 1982-03-10 | 1983-09-14 | Pr Hydraulik Ab | In line integral shock eliminator |
| US5732741A (en) * | 1996-09-25 | 1998-03-31 | Aeroquip Corporation | Noise suppressor |
| CN201184476Y (en) * | 2008-01-18 | 2009-01-21 | 蔡忠 | Pipeline silencer |
| CN202812636U (en) * | 2012-07-02 | 2013-03-20 | 中国舰船研究设计中心 | Noise reduction device for outlet of ship drainage pipeline |
| CN205479938U (en) * | 2016-04-13 | 2016-08-17 | 张庆阳 | Continuous absorber of pressure fluctuation |
| CN106764222A (en) * | 2017-02-03 | 2017-05-31 | 北京华德创业环保设备有限公司 | Shell and tube fluid flow straightener |
| CN107830281A (en) * | 2017-12-13 | 2018-03-23 | 泰兴市汇辰过滤器制造有限公司 | A kind of vessel reducing connecting hose |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109058644A (en) | 2018-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109682238B (en) | Ship heat exchanger with noise elimination function | |
| RU2013123283A (en) | PIPELINE FOR FLUID CONNECTION WITH REDUCED NOISE OF EXHAUST GASES | |
| CN109058644B (en) | Rectifier type seawater pipeline silencer with central bag body | |
| CN105370343A (en) | Silencer | |
| CN108561669A (en) | Elastic back cavity type pipeline vibration-damping sound-damping device | |
| CN104006260A (en) | Water pipe flow stabilizing broadband muffler | |
| CN2926903Y (en) | Pulse silencer of air-conditioner | |
| CN203927230U (en) | Low flow resistance wide band combined-type water pipeline silencing apparatus | |
| CN210768980U (en) | Silencer for high-power diesel generating set | |
| CN103321716B (en) | The reactive muffler structure that a kind of perforated pipe and narrow slit resonant cavity combine | |
| CN218293684U (en) | Go up into down and go out silencer | |
| CN201486624U (en) | Exhaust gas silencer | |
| CN208364208U (en) | A kind of lost type silencer of the pipe of impedance three | |
| CN201461033U (en) | Special air exhaust silencer for eliminating high-frequency whistle of engine | |
| CN113002745B (en) | Noise elimination cooler and ship cooling system | |
| CN105863784B (en) | Enhanced silencer | |
| CN114576138B (en) | Suction muffler | |
| CN203891993U (en) | Elliptic-cone-shaped-hole-duct type underwater multi-phase jet flow noise eliminating and reducing device | |
| CN110864180A (en) | High-efficient compact sea water pipeline silencer | |
| CN203321631U (en) | Reactive muffler structure with perforated pipes combined with narrow-gap resistant cavity | |
| CN202946221U (en) | Internal combustion engine silencer and internal combustion engine | |
| CN214307564U (en) | Silencer and air conditioner | |
| CN214500465U (en) | Combined type silencer | |
| KR100925942B1 (en) | Muffler in vehicle | |
| CN214500462U (en) | Compound silencer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |