CN103670602A - Three-layer series micro-perforated pipe muffler - Google Patents

Three-layer series micro-perforated pipe muffler Download PDF

Info

Publication number
CN103670602A
CN103670602A CN201310615227.2A CN201310615227A CN103670602A CN 103670602 A CN103670602 A CN 103670602A CN 201310615227 A CN201310615227 A CN 201310615227A CN 103670602 A CN103670602 A CN 103670602A
Authority
CN
China
Prior art keywords
micropunch
muffler
pipe
micropore
layers
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.)
Granted
Application number
CN201310615227.2A
Other languages
Chinese (zh)
Other versions
CN103670602B (en
Inventor
刘志恩
杜松泽
田小青
肖生浩
郭晶晶
颜伏伍
彭辅明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Technology WUT
Original Assignee
Wuhan University of Technology WUT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN201310615227.2A priority Critical patent/CN103670602B/en
Publication of CN103670602A publication Critical patent/CN103670602A/en
Application granted granted Critical
Publication of CN103670602B publication Critical patent/CN103670602B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Exhaust Silencers (AREA)

Abstract

The invention relates to the field of mufflers, and particularly provides a three-layer series micro-perforated pipe muffler which comprises a muffler body, an intake end and an exhaust end. The muffler body is of a three-layer micro-perforated pipe structure for muffling, aperture ranges from 0.1mm to 0.5mm, porosity is less than 5%, gaps are formed between three-layer micro-perforated pipes without being filled with filling materials, the three-layer micro-perforated pipes are different in aperture, equal in porosity and different in cavity volume, and noise in different frequency bands is eliminated. When the muffler is at work, airflow directly flows through a pipeline, and back pressure loss is low. The exhaust muffler is simple in structure, convenient to process and low in cost, and is resistant to high temperature, corrosion and airflow impact and long in service life as being of a pure-metal structure. The muffler has good muffling effect in the whole spectral range and particularly in high-frequency band, and muffling volume reaches 15-25dB.

Description

A kind of three layers of series connection micropunch muffler pipe
Technical field
The present invention relates to silencing apparatus field, a kind of three layers of series connection micropunch muffler pipe that are applied to extraction pump exhausting silencer are specifically provided.
Background technique
During extraction pump work, noise is mainly comprised of gas flow noise and mechanical part motion artifacts, noise frequency wider range.In HFS in eliminating gas flow noise, the medium and low frequency part in mechanical noise is very important equally.Traditional dissipative muffler needs filling sucting sound material to reach the object of noise reduction; Reactive muffler produces by labyrinth the object that impedance mismatching reaches noise elimination.The former is not suitable for relative closure environmental work, because the washing away for a long time lower sound-absorbing material and inevitably can swim in working room of exhaust stream, thereby personnel's health is had a negative impact; Wash away for a long time the sound-absorbing material making in silencing apparatus and reduce, soundproof effect reduces, so its working life is not long.Reactive muffler need to utilize complicated cavity or resonant cavity design, makes muffler volume larger, and exhaust back pressure is larger.
Summary of the invention
The technical problem to be solved in the present invention is, providing a kind of can use for a long time in relative closure working environment, tool is high temperature resistant, corrosion-resistant, resistance to gas shock, long service life, soundproof effect are good, exhaust pressure loss is little, simple in structure, process easy, lower-cost silencing apparatus, can within comprising the wider frequency section of low, middle and high frequency rate, eliminate the noise.
For solving the problems of the technologies described above, technological scheme of the present invention is as follows:
A kind of three layers of series connection micropunch muffler pipe, comprise inlet end (7), exhaust end (8) and the muffler body between inlet end (7) and exhaust end (8), it is characterized in that: described muffler body is managed (3) from outside to inside in shell (5), micropunch outer tube (4), micropunch, micropunch inner tube (2) four parts are coaxially socketed and form, and in micropunch outer tube (4), micropunch, on pipe (3), micropunch inner tube (2) tube wall, be covered with micropore, and each micropore is the straight-through micropore perpendicular to tetrameric central axis; Between each pipe layer of muffler body and be that cavity and each cavity are all without any packing material between micropunch outer tube (4) and shell (5); Between inlet end (7) and muffler body, by front cover (1) sealing, be connected, between exhaust end (8) and muffler body, by rear end cover (6) sealing, be connected, front cover (1) and rear end cover (6) center arrange the central through bore with micropunch inner tube (2) equal diameters, micropunch inner tube (2) and inlet end (7) and exhaust end (8) equal diameters, direct conducting inlet end (7) and exhaust end (8), or one end of micropunch inner tube (2) is directly stretched out and is formed exhaust end (8) from rear end cover (6) central through bore.
By technique scheme, between each pipe layer of muffler body and the cavity depth between micropunch outer tube (4) and shell (5) all unequal.
By technique scheme, in the shell of muffler body (5) and micropunch outer tube (4), micropunch, the cross section of pipe (3), micropunch inner tube (2) is circle; Or in shell (5), micropunch outer tube (4) and micropunch, the cross section of pipe (3) is square, and the cross section of micropunch inner tube (2) is circular.
By technique scheme, aperture and the porosity ratio of the micropore of each pipe layer are all not identical.
By technique scheme, the aperture of the micropore of each pipe layer is 0.1-0.5mm, and porosity ratio is less than 5%.
By technique scheme, the shell of muffler body (5) and each pipe layer are metal material.
By technique scheme, the pipe thickness of each pipe layer of muffler body is identical or different.
The present invention utilizes smaller size smaller to reach larger soundproof effect, muffler body adopts three layers of micropunch pipe, between each layer of micropunch pipe, is cavity, and cavity is interior without packing material, by three layers of microperforated panel aperture, porosity ratio, each cavity depth Proper Match, realize the elimination to different frequency range noise.During silencing apparatus work, air-flow directly flows by pipeline, and back pressure loss is little.During work, the inlet end of air-flow from front cover flows into, and radial flow is crossed the cavity layer between shell and three layers of series connection micropunch pipe, and the exhaust end after three layers of micropunch pipe are eliminated the noise from rear end cover is discharged.Air-flow is when through silencing apparatus, and micro-pore diameter and porosity ratio on tube wall are little, and surface is relatively smooth, less to air current flow resistance, and main gas flows along tube axis direction, so the pressure loss is little.Sound wave when the micropore, because the rubbing action of air and micropore makes acoustic energy be converted into heat energy, thereby is realized the object of eliminating the noise.By optimization, calculate discovery, in microporous pipe structure, pore size can affect the frequency of noise elimination simultaneously; Under identical aperture, porosity ratio increases frequency of noise elimination meeting toward high-frequency mobile; Change cavity depth, change each layer of distance between micropunch pipe and can improve deadening frequency band width, and improve sound deadening capacity.In three layers of micropunch tubular construction, the porosity ratio, aperture and the cavity body degree of depth that reasonably design each layer of perforated plate can obtain wider frequency of noise elimination and larger sound deadening capacity, and sound deadening capacity can reach 15dB.
As deformation design of the present invention, can design series connection micropunch muffler pipes two-layer or four layers, but with respect to two-layer, the structure that the present invention is three layers can obtain the frequency of noise elimination of wider frequency section and larger sound deadening capacity by the Proper Match of porosity ratio, aperture and the cavity body degree of depth of each layer of perforated plate, and four layers of above series connection micropunch tubular construction are substantially without soundproof effect.
The invention has the beneficial effects as follows: in the situation that buffer chamber not being set, use three layers of series connection micropunch pipe just can reach the soundproof effect of wider frequency section, than the volume of traditional impedance structure silencing apparatus, reduce; Inlet end and exhaust end directly communicate, and air-flow, without any turning and buffering, has farthest reduced flow resistance when air-flow passes through silencing apparatus; Pure metal structure, can high temperature resistant, corrosion-resistant, resistance to gas shock, long service life; Do not adopt inflammable, the easy inhalation (inhalatio)s such as acoustical cotton, guaranteed the safety of people when silencing apparatus is worked in relative closure environment.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described, in accompanying drawing:
Fig. 1 is three layers of series connection micropunch muffler pipe structural representation of the present invention;
Fig. 2 is A-A sectional view of Fig. 1;
Fig. 3 is that micropore inner tube micropore is arranged partial schematic diagram;
Fig. 4 manages micropore to arrange partial schematic diagram in micropore;
Fig. 5 is that micropore outer tube micropore is arranged partial schematic diagram;
In figure, each mark is corresponding as follows: in front cover 1, micropore inner tube 2, micropore, manage 3, micropore outer tube 4, shell 5, rear end cover 6, inlet end 7, exhaust end 8, runner I 9, cavity II 10, cavity III 11, cavity IV 12; The micropore 14 of pipe in the micropore 13 of micropore inner tube, micropore is, the micropore 15 of micropore outer tube.
Embodiment
Embodiment 1:
As Fig. 1-5, three layers of series connection micropunch muffler pipe of the present invention comprise metal shell 5, the two ends of shell 5 are respectively front cover 1 and rear end cover 6, and silencing apparatus cross section is circular, from cross section see be followed successively by from the inside to surface micropore inner tube 2, micropore, manage 3, micropore outer tube 4, muffler shell 5.
Muffler shell 5 is cylindrical shape; The arrangement that adopts inlet end directly to communicate by suppressor case with exhaust end, described inlet end and exhaust end are positioned at the center at cylinder two ends; Muffler shell 5 is interior arranges three layers of micropunch pipe along axial direction, and described enclosure interior spatial separation is become to runner I 9, cavity II 10, cavity III 11, cavity IV 12; Described three layers of micropunch pipe are cylindric, and micropore inner tube 2 is identical with exhaust end 8 diameters with inlet end 7, directly inlet end and exhaust end described in conducting.Micropore outer tube 4, between micropore inner tube 2 and shell 5, is separated into volume two-part not etc. by the cavity of 5, described micropore inner tube 2 and shell.In micropore, manage 3 between micropore outer tube 4 and micropore inner tube 2, the cavity between micropore outer tube 4 and micropore inner tube 2 is separated into volume two-part not etc. along housing axial direction; In described micropore inner tube 2, micropore, manage 3, be equipped with the micropore of different pore size on micropore outer tube 4, the micropore arrangement that in three layers of microporous pipe, micropore adopts is different.
In described micropore inner tube 2, micropore, manage 3 and micropore outer tube 4 adopt the sheetmetal punching of same thickness to make.As in Figure 3-5, described micropore inner tube micropore 13 diameters are 0.5mm, along the distance between borehole of 13 of the axial adjacent micropores of silencing apparatus, are 1.6mm, along the hole circle heart distance of 13 of the adjacent two row micropores of silencing apparatus cross-sectional circumferential direction, are 1mm.In described micropore, managing micropore 14 diameters is 0.8mm, along longitudinal adjacent micropore 14 distance of center circle of silencing apparatus from being 1.8mm, along adjacent two row micropore 14 distance of center circle of silencing apparatus cross-sectional circumferential direction from being 1.8mm.Described micropore outer tube micropore 15 diameters are 1mm, and along longitudinal adjacent micropore 15 distance of center circle of silencing apparatus from being 2mm, along adjacent two row micropore 15 distance of center circle of silencing apparatus cross-sectional circumferential direction from being 2.6mm, also the porosity ratio of different pipe layers and aperture are all different.
Embodiment 2:
Basic identical with embodiment 1 Fig. 1 and Fig. 3-5, difference is that muffler shell 5 cross sections are square, and described micropore outer tube 4 cross sections are square, manage 3 cross sections for square in described micropore, and micropore inner tube 2 cross sections are circular.
In other unlisted embodiments of the present invention, also can change that in muffler shell 5, micropore outer tube 4, micropore, to manage 3 shape of cross section be isosceles polygonal, as rhombus or pentagon.
In above-described embodiment, during three layers of series connection micropunch muffler pipe work of the present invention, the inlet end 7 of air-flow from front cover 1 flows into, and flows through shell 5 and three layers of series connection micropunch pipe 2,3,4, and the exhaust end 8 after three layers of micropunch pipe are eliminated the noise from rear end cover 6 is discharged.Air-flow when the silencing apparatus without any turning and buffering course, thereby farthest reduce exhaust back pressure.
The foregoing is only the restriction the present invention that is preferably not used in of the present invention; those skilled in the art can carry out various changes and not depart from the spirit and scope of the present invention the present invention, and all these changes all should belong to the protection domain of claims of the present invention.

Claims (7)

1. one kind three layers series connection micropunch muffler pipe, comprise inlet end (7), exhaust end (8) and the muffler body between inlet end (7) and exhaust end (8), it is characterized in that: described muffler body is managed (3) from outside to inside in shell (5), micropunch outer tube (4), micropunch, micropunch inner tube (2) four parts are coaxially socketed and form, and in micropunch outer tube (4), micropunch, on pipe (3), micropunch inner tube (2) tube wall, be covered with micropore, and each micropore is the straight-through micropore perpendicular to tetrameric central axis; Between each pipe layer of muffler body and be that cavity and each cavity are all without any packing material between micropunch outer tube (4) and shell (5); Between inlet end (7) and muffler body, by front cover (1) sealing, be connected, between exhaust end (8) and muffler body, by rear end cover (6) sealing, be connected, front cover (1) and rear end cover (6) center arrange the central through bore with micropunch inner tube (2) equal diameters, micropunch inner tube (2) and inlet end (7) and exhaust end (8) equal diameters, direct conducting inlet end (7) and exhaust end (8), or one end of micropunch inner tube (2) is directly stretched out and is formed exhaust end (8) from rear end cover (6) central through bore.
2. three layers of series connection micropunch muffler pipe according to claim 1, is characterized in that: between each pipe layer of muffler body and the cavity depth between micropunch outer tube (4) and shell (5) all unequal.
3. three layers of series connection micropunch muffler pipe according to claim 1 and 2, is characterized in that: in the shell of muffler body (5) and micropunch outer tube (4), micropunch, the cross section of pipe (3), micropunch inner tube (2) is circle; Or in shell (5), micropunch outer tube (4) and micropunch, the cross section of pipe (3) is square, and the cross section of micropunch inner tube (2) is circular.
4. three layers of series connection micropunch muffler pipe according to claim 3, is characterized in that: aperture and the porosity ratio of the micropore of each pipe layer are all not identical.
5. according to three layers of series connection micropunch muffler pipe described in claim 1 or 2 or 4, it is characterized in that: the aperture of the micropore of each pipe layer is 0.1-0.5mm, and porosity ratio is less than 5%.
6. three layers of series connection micropunch muffler pipe according to claim 5, is characterized in that: the shell of muffler body (5) and each pipe layer are metal material.
7. according to three layers of series connection micropunch muffler pipe described in claim 1 or 2 or 4 or 6, it is characterized in that: the pipe thickness of each pipe layer of muffler body is identical or different.
CN201310615227.2A 2013-11-28 2013-11-28 Three-layer series micro-perforated pipe muffler Active CN103670602B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310615227.2A CN103670602B (en) 2013-11-28 2013-11-28 Three-layer series micro-perforated pipe muffler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310615227.2A CN103670602B (en) 2013-11-28 2013-11-28 Three-layer series micro-perforated pipe muffler

Publications (2)

Publication Number Publication Date
CN103670602A true CN103670602A (en) 2014-03-26
CN103670602B CN103670602B (en) 2017-01-18

Family

ID=50309264

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310615227.2A Active CN103670602B (en) 2013-11-28 2013-11-28 Three-layer series micro-perforated pipe muffler

Country Status (1)

Country Link
CN (1) CN103670602B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106205588A (en) * 2016-08-26 2016-12-07 四川三元环境治理股份有限公司 Multilamellar perforated microstructure noise elimination flow deflector
CN106321406A (en) * 2016-11-01 2017-01-11 四川三元环境治理股份有限公司 Evacuating silencer
CN106715849A (en) * 2014-09-09 2017-05-24 3M创新有限公司 Acoustic device
CN108194167A (en) * 2017-12-31 2018-06-22 重庆固发机械制造有限责任公司 A kind of silencer for motor vehicle
CN108278140A (en) * 2018-03-23 2018-07-13 榆林学院 A kind of oil/gas drilling Diesel Engine Exhaust Pipe and production method with noise elimination function
CN109106277A (en) * 2017-06-26 2019-01-01 美的集团股份有限公司 Air inlet pipe and dust catcher
CN109341086A (en) * 2018-10-19 2019-02-15 华帝股份有限公司 Composite broadband noise reduction silencer and gas water heater
US10557402B2 (en) 2013-03-15 2020-02-11 Kohler Co. Noise suppression systems
CN110838281A (en) * 2019-10-11 2020-02-25 西安交通大学 Multi-cavity sandwich type micro-perforated plate noise elimination structure
CN110847980A (en) * 2019-11-19 2020-02-28 上海钟音环保设备有限公司 Pipeline multilayer micro-perforated plate silencer and processing method thereof
CN113251405A (en) * 2021-05-13 2021-08-13 中国船舶重工集团公司第七一九研究所 Steam bubbling device and steam power system
CN114909201A (en) * 2021-02-07 2022-08-16 广州汽车集团股份有限公司 Exhaust muffler device and car

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2171677Y (en) * 1993-06-11 1994-07-13 成都科泰临床工程发展中心 Miniature exhaust silencer
CN2737956Y (en) * 2004-11-08 2005-11-02 王全龄 Noise silencer for tractor and agricultural motor tricycle
CN201778861U (en) * 2010-08-23 2011-03-30 杭州普菲科空分设备有限公司 Flow around type silencer
CN102261276A (en) * 2010-05-28 2011-11-30 孙亚平 Multi-layer muffler
CN102394060A (en) * 2011-10-01 2012-03-28 韩杰 Muffler
CN203604153U (en) * 2013-11-28 2014-05-21 武汉理工大学 Three-layer serial micro-perforated pipe muffler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2171677Y (en) * 1993-06-11 1994-07-13 成都科泰临床工程发展中心 Miniature exhaust silencer
CN2737956Y (en) * 2004-11-08 2005-11-02 王全龄 Noise silencer for tractor and agricultural motor tricycle
CN102261276A (en) * 2010-05-28 2011-11-30 孙亚平 Multi-layer muffler
CN201778861U (en) * 2010-08-23 2011-03-30 杭州普菲科空分设备有限公司 Flow around type silencer
CN102394060A (en) * 2011-10-01 2012-03-28 韩杰 Muffler
CN203604153U (en) * 2013-11-28 2014-05-21 武汉理工大学 Three-layer serial micro-perforated pipe muffler

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10557402B2 (en) 2013-03-15 2020-02-11 Kohler Co. Noise suppression systems
US10352210B2 (en) 2014-09-09 2019-07-16 3M Innovative Properties Company Acoustic device
CN106715849A (en) * 2014-09-09 2017-05-24 3M创新有限公司 Acoustic device
US20170241310A1 (en) * 2014-09-09 2017-08-24 3M Innovative Properties Company Acoustic device
CN106205588A (en) * 2016-08-26 2016-12-07 四川三元环境治理股份有限公司 Multilamellar perforated microstructure noise elimination flow deflector
CN106205588B (en) * 2016-08-26 2022-10-28 四川三元环境治理股份有限公司 Multilayer micro-perforated structure noise elimination flow deflector
CN106321406A (en) * 2016-11-01 2017-01-11 四川三元环境治理股份有限公司 Evacuating silencer
CN109106277A (en) * 2017-06-26 2019-01-01 美的集团股份有限公司 Air inlet pipe and dust catcher
CN108194167A (en) * 2017-12-31 2018-06-22 重庆固发机械制造有限责任公司 A kind of silencer for motor vehicle
CN108278140A (en) * 2018-03-23 2018-07-13 榆林学院 A kind of oil/gas drilling Diesel Engine Exhaust Pipe and production method with noise elimination function
CN109341086A (en) * 2018-10-19 2019-02-15 华帝股份有限公司 Composite broadband noise reduction silencer and gas water heater
CN110838281A (en) * 2019-10-11 2020-02-25 西安交通大学 Multi-cavity sandwich type micro-perforated plate noise elimination structure
CN110847980A (en) * 2019-11-19 2020-02-28 上海钟音环保设备有限公司 Pipeline multilayer micro-perforated plate silencer and processing method thereof
CN114909201A (en) * 2021-02-07 2022-08-16 广州汽车集团股份有限公司 Exhaust muffler device and car
CN113251405A (en) * 2021-05-13 2021-08-13 中国船舶重工集团公司第七一九研究所 Steam bubbling device and steam power system
CN113251405B (en) * 2021-05-13 2022-05-20 中国船舶重工集团公司第七一九研究所 Steam bubbling device and steam power system

Also Published As

Publication number Publication date
CN103670602B (en) 2017-01-18

Similar Documents

Publication Publication Date Title
CN103670602A (en) Three-layer series micro-perforated pipe muffler
CN203604186U (en) Double-layer serial micro-perforated pipe muffler
CN103671071A (en) Double-layer series silencer with miniature perforated pipes
CN203604153U (en) Three-layer serial micro-perforated pipe muffler
WO2016127702A1 (en) Compressor intake silencer based on multi-level tubular attenuation unit
CN103321716B (en) The reactive muffler structure that a kind of perforated pipe and narrow slit resonant cavity combine
CN107816595A (en) A kind of not even depth back of the body chamber micropunch muffler pipe in parallel
CN207864880U (en) A kind of not even depth back of the body chamber micropunch muffler pipe in parallel
CN203202508U (en) Pipeline air exhausting sound eliminator for nuclear power station
CN104329139A (en) Silencer of motorcycle exhausting system
CN206487543U (en) A kind of diesel-driven generator exhaust silencer system
CN201461037U (en) Impedance composite exhaust muffler for miniature automobile
CN211549805U (en) Impedance composite silencer
CN204458259U (en) A kind of compressor intake silencer based on multi-layer tubular type attenuation units
CN211578365U (en) Silencing device
CN202117738U (en) Muffler for diesel engine
CN104265415A (en) Impedance composite tractor muffler
CN205779130U (en) A kind of automobile exhaust muffler
CN210890576U (en) Silencer
CN205422881U (en) Resonant silencer
CN205779125U (en) A kind of automobile exhaust muffler
CN214662874U (en) Novel silencer
CN202578843U (en) Exhaust silencer for engineering machinery
CN202228156U (en) Silencer
CN209147183U (en) Smoke exhaust pipe of composite silencer and range hood

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant