CN2668866Y - Exhaust muffler for marine diesel engine - Google Patents
Exhaust muffler for marine diesel engine Download PDFInfo
- Publication number
- CN2668866Y CN2668866Y CNU2003201115103U CN200320111510U CN2668866Y CN 2668866 Y CN2668866 Y CN 2668866Y CN U2003201115103 U CNU2003201115103 U CN U2003201115103U CN 200320111510 U CN200320111510 U CN 200320111510U CN 2668866 Y CN2668866 Y CN 2668866Y
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- CN
- China
- Prior art keywords
- barrel body
- flue gas
- fire
- cylindrical shell
- middle level
- 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
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Abstract
The utility model relates to an exhaust muffler for ship diesel engine, adopts the structure and the theory of the resistance complex muffler, and is composed of three layers of cylindrical barrel bodies with different lengths and same coaxial lines. The both ends of the utility model are provided with a flue gas entrance and a flue gas exhaust port. The barrel wall of the inner barrel body is uniformly processed with an eyelet, and the inside of the inner barrel body is filled with the fire-proof sound absorbing cotton felt. The end of the inner barrel body approaching to the flue gas inlet side is welded with a conical cover with same coaxial line, and the external surface of the inner barrel body is welded with a guide vane. The middle barrel body is sleeved with the inner barrel body, the wall of the middle barrel body is also provided with a hole, and the outer wall of the middle barrel body is covered with the fire-proof sound absorbing cotton felt. The head of the middle barrel body is made out an arc flanging. The barrel bodies and the accessories are all made of the stainless material. The connecting welding seam can adopt the argon arc welding and is carried out the encapsulation test. The exhaust muffler for ship diesel engine provided by the utility model is accompanied with the multiple functions of eliminating the spark in the exhaust gas, collecting dust, cooling and muffling the sound, and the muffling quantity can reach more than 20 dB(A).
Description
Technical field
A kind of ship diesel exhaust silencer is used for reducing the carbon granules in the radiated noise of ship diesel exhaust pipe mouth, the spark that suppresses the discharging flue gas and the collection discharging flue gas.Can improve the environmental quality on naval vessel, particularly improve the disguise of naval vessels, strengthen its fighting capacity.
Background technique
Existing silencing apparatus can be divided into three major types by its structural principle: anti-formula silencing apparatus, resistance formula silencing apparatus and complex muffler.Anti-formula silencing apparatus mainly is that the reflection by sound wave reduces propagates down stream acoustic energy, has good low cut performance usually.Resistance formula silencing apparatus is that the sound-absorbing material by interior dress absorbs acoustic energy to lower propagation downstream.Resistance formula silencing apparatus can reduce high-frequency noises effectively, but low frequency performance is relatively poor.Complex muffler is the comprehensive of above-mentioned two kinds of structures, and the impedance complex formula silencing apparatus of optimal design can be accomplished the purpose that basic, normal, high audio-frequency noise is all decayed.
Modern Ships is big with diesel engine power, and the flue-gas temperature height of discharge, flow velocity height, flow are big, exhaust noise frequency scope 50Hz～4000Hz.Therefore the silencing apparatus that requires to install on it should satisfy technical orders such as main frequency band sound deadening capacity is big, gas-flow resistance is low, physical dimension is little, in light weight.Also need to suppress to discharge the spark in the flue gas, the carbon granule that collection contains in some application, reduce functions such as silencing apparatus surface temperature,, improve environmental quality to guarantee the safety in the ship navigation.Existing diesel engine silencer does not satisfy these requirements.
Summary of the invention
The purpose of this utility model is to disclose a kind of ship diesel exhaust silencer, have the middle spark that removes smoke, control of dust, cooling and noise elimination multiple function concurrently, and have flow resistance little, to characteristics such as diesel engine performance influence are little, the diesel oil function is started and proper functioning smoothly.
The utility model adopts the structure and the principle of impedance complex formula silencing apparatus, promptly utilizes the expansion, contraction, disturbance, eddy current etc. of air-flow and the sound-absorbing material that installs additional to subdue acoustic energy, reduce acoustic pressure.A kind of ship diesel exhaust silencer is made up of the coaxial line cylindrical tube of three layers of different length.The slenderness ratio of outer layer barrel is about 3: 1, and an end installs the fuel gas inlet of coaxial line additional, and the end plate of the other end passes through mutually with the middle level cylinder lateral wall.The middle level cylindrical shell welds and installs additional flue gas discharge opening with the place of passing through mutually of outer layer barrel end.Internal layer cylinder runs through the head and the tail of whole silencing apparatus substantially, processes boring rate (ratio of the hole gross area and boring section tube surface area) on the barrel equably and be about 30%, the aperture is the aperture of φ 6, fills the full cotton felt of fire-resistant sound absorption in the tube, as model XN-80.Be welded with the cone-shaped hood of coaxial line near the internal layer cylinder end of flue gas inlet side, tapering is about 60 °, be welded with 6 or 12 guide vanes with its bus oblique on the conical outer surface, so that make flue gas form eddy flow, being beneficial to the big slightly carbon granule that cools in the expansion chamber of back and will include gets rid of to the periphery, opening on outer tube wall falls in the dust collecting box, regularly removes from ash-discharge opening.Be collected at the moisture content in the cone-shaped hood is guided the silencing apparatus end into through drain pipe drain port.The middle level cylindrical shell is positioned at the second half section of silencing apparatus, with the internal layer cylinder suit, fixes by dunnage, and length is about 2/3 of whole silencing apparatus, and its leading portion is positioned at expansion chamber, and circular-arc flanging is made in the end, can significantly reduce gas-flow resistance.Also process the boring rate on the wall at middle level cylindrical shell middle part equably and be about 30%, the aperture is the aperture of φ 6, two ring-like plate shutoff before and after installing additional along the transverse section between middle level cylindrical shell and the outer layer barrel, to stop flue gas to pass through, the middle level cylindrical shell coats half thick cotton felt of fire-resistant sound absorption of radial spacing outward.For ease of installing, the silencing apparatus periphery installs fixed support additional on the appropriate location.
Flue gas channel is: passage, flue gas discharge opening between flue gas inlet, cone-shaped hood and guide vane, expansion chamber, middle level cylindrical shell and internal layer cylinder.
Cylindrical shell and annex are all made with stainless steel material.The jointing place weld seam can adopt argon arc welding and through seal tightness test.
Whole silencing apparatus length and diameter depend on the factors such as frequency, sound deadening capacity and mounting point of institute's mute; And the tube plate thickness depends on the weight of structural strength and silencing apparatus; Sound deadening capacity and flow resistance depend on internal structure.These all need through acoustics, thermal conduction study, aerodynamics calculating and join the machine test.
The ship diesel exhaust silencer sound deadening capacity that the utility model provides can reach more than the 20dB (A).
Description of drawings
Fig. 1 ship diesel exhaust silencer structural representation (integral conical cover)
Fig. 2 ship diesel exhaust silencer structural representation (separated cone-shaped hood)
Embodiment
Provide below and implement preferred version of the present utility model, and be illustrated in conjunction with the accompanying drawings.
As shown in Figure 1, 2, the ship diesel exhaust silencer is made up of outer layer barrel 1, internal layer cylinder 2, cone-shaped hood 3, guide vane 4, the cotton felt 5 of interior fire-resistant sound absorption, middle level cylindrical shell 6, the cotton felt 7 of outer fire-resistant sound absorption, dust collecting box 8, ash-discharge opening 15, flue gas inlet 9, flue gas discharge opening 10, ring-like plate 11, drain pipe 12, weep hole 13, fixed support 14, dunnage 16; Three layers of coaxial line cylindrical tube body length difference wherein, the slenderness ratio of outer layer barrel 1 is about 3: 1, and an end installs the flue gas inlet 9 of coaxial line additional, and the end plate of the other end passes through mutually with the sidewall of middle level cylindrical shell 6, installs flue gas discharge opening 10 after the welding additional.Internal layer cylinder 2 runs through the head and the tail of whole silencing apparatus substantially, processes boring rate (ratio of the hole gross area and tube boring segment table area) on the barrel equably and be about 30%, the aperture is the aperture of φ 6, fill in the tube full in the cotton felt 5 of fire-resistant sound absorption, be XN-80 as model.Be welded with the cone-shaped hood 3 of coaxial line near internal layer cylinder 2 ends of flue gas inlet 9 sides, tapering is about 60 °, be welded with 6 or 12 guide vanes 4 with its bus oblique on the conical outer surface, so that make flue gas form eddy flow, being beneficial to the big slightly carbon granule that cools in the expansion chamber 01 of back and will include gets rid of to the periphery, opening on outer layer barrel 1 barrel falls in the dust collecting box 8, and regularly removes from ash-discharge opening 15.Be collected at the water droplet on cone-shaped hood 3 and the guide vane 4 is guided the silencing apparatus end into through drain pipe 12 drain port 13.Middle level cylindrical shell 6 is positioned at the second half section of silencing apparatus, with internal layer cylinder 2 suits, between form flue gas channel 02, and fixing by dunnage 16, length is about 2/3 of whole silencing apparatus; Its leading portion is positioned at expansion chamber 01, and circular-arc flanging is made in the end, can significantly reduce gas-flow resistance.Also process the boring rate on the wall at middle level cylindrical shell 6 middle parts equably and be about 30%, the aperture is the aperture of φ 6; Install two ring-like plate 11 shutoff in front and back additional along the transverse section between middle level cylindrical shell 6 and the outer layer barrel 1, pass through to stop flue gas; Middle level cylindrical shell 6 outer half thick outer fire-resistant sound absorption rock wool blanket 7 of radial spacing that coat; For ease of installing, the silencing apparatus periphery installs fixed support 14 additional on the appropriate location.
Fig. 1 has provided the structural type of cone-shaped hood 3 with inner barrel 2 integral types; Fig. 2 has provided the structural type of cone-shaped hood 3 with inner barrel 2 separateds.
Cylindrical shell and annex are all made with stainless steel material, and the jointing place weld seam can adopt argon arc welding and through seal tightness test.
Whole silencing apparatus length and diameter depend on the factors such as frequency, sound deadening capacity and mounting point of institute's mute; And the tube plate thickness depends on the weight of structural strength and silencing apparatus; Sound deadening capacity and flow resistance depend on internal structure.These all need through acoustics, thermal conduction study, aerodynamics calculating and join the machine test.
The ship diesel exhaust silencer sound deadening capacity that the utility model provides can reach more than the 20dB (A).
Claims (3)
1. ship diesel exhaust silencer, it is characterized in that it be by interior, in, outer three layers of coaxial line cylindrical tube (2,6,1), inside and outside two layers of cotton felt of fire-resistant sound absorption (5,7) and cone-shaped hood (3), guide vane (4), dust collecting box major components such as (8) are formed; Wherein the slenderness ratio of outer layer barrel (1) is about about 3:1, and an end installs the flue gas inlet (9) of coaxial line additional, and the end plate of the other end passes through mutually with the sidewall of middle level cylindrical shell (6); Install flue gas discharge opening (10) additional after the place of the passing through welding mutually, internal layer cylinder (2) runs through the head and the tail of whole silencing apparatus substantially, processes the boring rate on the barrel equably and be about 30%, the aperture is the aperture of φ 6, fill in the tube full in the cotton felt of fire-resistant sound absorption (5); Internal layer cylinder (2) end of close flue gas inlet (9) side is welded with the cone-shaped hood (3) of coaxial line, is welded with the guide vane (4) with its bus oblique on the conical outer surface; Middle level cylindrical shell (6) is positioned at the second half section of silencing apparatus, with internal layer cylinder (2) suit, between form flue gas channel (02); Process equably also on the wall at middle part that the boring rate is about 30%, the aperture is the aperture of φ 6; Install forward and backward two blocks of ring-like plates (11) shutoff between middle level cylindrical shell (6) and the outer layer barrel (1) along the transverse section additional, and coat with half thick cotton felt of outer fire-resistant sound absorption (7) of radial dimension.
2. ship diesel exhaust silencer as claimed in claim 1 is characterized in that on the front walls of outer layer barrel (1) opening being arranged and being communicated with the dust collecting box that has ash-discharge opening (15) (8); Be connected with drain pipe (12) between cone-shaped hood (3) and drain port (13).
3. ship diesel exhaust silencer as claimed in claim 1 is characterized in that middle level cylindrical shell (6) leading portion is positioned at expansion chamber (01), and circular-arc flanging is made in the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201115103U CN2668866Y (en) | 2003-10-31 | 2003-10-31 | Exhaust muffler for marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201115103U CN2668866Y (en) | 2003-10-31 | 2003-10-31 | Exhaust muffler for marine diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2668866Y true CN2668866Y (en) | 2005-01-05 |
Family
ID=34438809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201115103U Expired - Lifetime CN2668866Y (en) | 2003-10-31 | 2003-10-31 | Exhaust muffler for marine diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2668866Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691549A (en) * | 2011-03-24 | 2012-09-26 | 宜兴市川泽环境工程有限公司 | Impedance combined type silencer |
| CN103306793A (en) * | 2013-06-21 | 2013-09-18 | 安徽理工大学 | Spiral-flow silencer |
| CN103949134A (en) * | 2014-05-21 | 2014-07-30 | 苏州鑫荣健身器材有限公司 | Automobile exhaust absorbing-purifying device |
| CN105814367A (en) * | 2013-12-11 | 2016-07-27 | 施耐德博士塑料工厂有限公司 | Sound-absorbent element for an air outlet |
| CN108518261A (en) * | 2018-05-25 | 2018-09-11 | 深圳中雅机电实业有限公司 | The flue dust collecting device of marine diesel exhaust outlet |
| CN110067615A (en) * | 2019-05-29 | 2019-07-30 | 深圳中雅机电实业有限公司 | A kind of diesel exhaust gas rain-proof silencer of collected overhead rainwater bottom collection ash |
-
2003
- 2003-10-31 CN CNU2003201115103U patent/CN2668866Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691549A (en) * | 2011-03-24 | 2012-09-26 | 宜兴市川泽环境工程有限公司 | Impedance combined type silencer |
| CN103306793A (en) * | 2013-06-21 | 2013-09-18 | 安徽理工大学 | Spiral-flow silencer |
| CN105814367A (en) * | 2013-12-11 | 2016-07-27 | 施耐德博士塑料工厂有限公司 | Sound-absorbent element for an air outlet |
| CN105814367B (en) * | 2013-12-11 | 2019-06-04 | 施耐德博士塑料工厂有限公司 | Sound absorbing element for exhaust apparatus |
| CN103949134A (en) * | 2014-05-21 | 2014-07-30 | 苏州鑫荣健身器材有限公司 | Automobile exhaust absorbing-purifying device |
| CN108518261A (en) * | 2018-05-25 | 2018-09-11 | 深圳中雅机电实业有限公司 | The flue dust collecting device of marine diesel exhaust outlet |
| CN110067615A (en) * | 2019-05-29 | 2019-07-30 | 深圳中雅机电实业有限公司 | A kind of diesel exhaust gas rain-proof silencer of collected overhead rainwater bottom collection ash |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131031 Granted publication date: 20050105 |