CN112610304A - Rotary double-cavity silencer for extinguishing spark - Google Patents
Rotary double-cavity silencer for extinguishing spark Download PDFInfo
- Publication number
- CN112610304A CN112610304A CN201910946626.4A CN201910946626A CN112610304A CN 112610304 A CN112610304 A CN 112610304A CN 201910946626 A CN201910946626 A CN 201910946626A CN 112610304 A CN112610304 A CN 112610304A
- Authority
- CN
- China
- Prior art keywords
- silencer
- cavity
- partition plate
- cylinder body
- barrel
- 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
- 230000003584 silencer Effects 0.000 title claims abstract description 68
- 238000005192 partition Methods 0.000 claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000011490 mineral wool Substances 0.000 claims description 4
- 230000030279 gene silencing Effects 0.000 abstract description 9
- 239000011358 absorbing material Substances 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/06—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a rotary type fire extinguishing star double-cavity silencer, which comprises a silencer barrel, wherein the silencer barrel is of a cylindrical structure, an air inlet pipe is arranged at one end of the silencer barrel, an air outlet pipe is arranged at the other end of the silencer barrel, the wall of the silencer barrel is of a double-layer structure, a sound absorbing material is filled in a cavity of the wall of the silencer barrel, and the inner wall of the silencer barrel is a perforated plate; a partition plate is fixedly arranged in the silencer cylinder and divides a cylinder cavity of the silencer cylinder into a front expansion cavity and a rear expansion cavity; at least 2 perforated pipes are supported on the partition plate, and the perforated pipes lead from the front expansion cavity to the rear expansion cavity; the spiral flow deflector is fixedly arranged on the partition plate and extends into the pipe of the air inlet pipe; the silencer cylinder is provided with an ash collecting opening which leads to an ash collecting hopper from the cylinder cavity of the silencer cylinder. The double-cavity silencer can realize broadband silencing, has small exhaust resistance and can quickly extinguish sparks.
Description
Technical Field
The invention relates to a diesel engine exhaust muffler, in particular to a muffler capable of reducing noise at an exhaust pipe opening of a marine diesel engine and extinguishing sparks.
Background
The marine diesel engine has the advantages of high output power efficiency, high exhaust temperature, high flow and wide exhaust noise frequency range. For a high-power marine diesel engine, besides good broadband silencing performance, smooth exhaust and small pressure loss must be ensured, and the silencer should meet the technical indexes of large main frequency silencing quantity, low airflow resistance, small structure size, light weight and the like. At present, the exhaust silencer of the marine internal combustion engine is an expansion silencer mainly used for eliminating medium and low frequency noise, and the exhaust silencer is often narrow in silencing frequency band, difficult to cover a noise frequency band with high sound wave, or easy to form large flow resistance and exhaust back pressure in an exhaust pipeline, and large in power loss of the internal combustion engine.
The diesel oil of the diesel engine is used in a large amount, carbon particles are generated when the diesel oil is not fully combusted in a combustion chamber, the carbon particles are accumulated in an exhaust pipe of the diesel engine, and form sparks to be taken out when the carbon particles are combusted in the presence of high-temperature gas, so that the environment is polluted, and when the carbon particles are combusted in the presence of combustible and inflammable substances, fire alarm is easily caused in combustion, even surrounding combustible gas explosion is caused, and disastrous accidents are caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rotary type double-cavity fire extinguishing star silencer, which can realize broadband silencing and has small exhaust resistance and can quickly extinguish sparks.
In order to solve the technical problem, the rotary type double-cavity silencer for the fire extinguishing stars comprises a silencer cylinder body, wherein the silencer cylinder body is of a cylindrical structure, an air inlet pipe is arranged at one end of the silencer cylinder body, an air outlet pipe is arranged at the other end of the silencer cylinder body, the cylinder wall of the silencer cylinder body is of a double-layer structure, a sound absorbing material is filled in a cavity of the cylinder wall, and the inner cylinder wall of the silencer cylinder body is a perforated plate; a partition plate is fixedly arranged in the silencer cylinder and divides a cylinder cavity of the silencer cylinder into a front expansion cavity and a rear expansion cavity; at least 2 perforated pipes are supported on the partition plate, and the perforated pipes lead from the front expansion cavity to the rear expansion cavity; the spiral flow deflector is fixedly arranged on the partition plate and extends into the pipe of the air inlet pipe; the silencer cylinder is provided with an ash collecting opening which leads to an ash collecting hopper from the cylinder cavity of the silencer cylinder.
Furthermore, the central lines of the air inlet pipe, the air outlet pipe and the spiral flow deflector are positioned on the central line of the silencer cylinder.
Furthermore, the spiral flow deflector is a spiral blade, the ash collecting hopper is fixedly arranged on the silencer cylinder, and the position of the ash collecting hopper corresponds to the position of the spiral flow deflector.
Furthermore, 2-10 perforated pipes are supported on the partition plate, the perforation rate of the perforated pipes is 25% -30%, and the perforation aperture is 4-6 mm.
Furthermore, the inner wall plate of the silencer cylinder body has the perforation rate of 25% -30% and the perforation aperture of 4-6 mm.
Further, the sound absorption material is rock wool or glass fiber.
Furthermore, the overhanging end of the air inlet pipe is provided with an air inlet pipe flange, and the overhanging end of the air outlet pipe is provided with an air outlet pipe flange.
In the structure, the wall of the silencer cylinder body adopts a double-layer structure, the double-layer wall cavity is filled with sound absorption materials, the wall plate facing the flow cavity is a perforated plate, and the perforated plate and the sound absorption material layer form a resistive silencer which converts sound energy into heat energy by using friction, viscosity and damping action to dissipate, so that the silencer has good medium-frequency and high-frequency silencing performance; meanwhile, a partition plate is fixedly arranged in the silencer cylinder body, perforated pipes are supported on the partition plate, and the partition plate divides a cylinder cavity of the silencer cylinder body into a front expansion cavity and a rear expansion cavity; the air flow enters the front expansion chamber through the air inlet pipe and then enters the rear expansion chamber through the perforated pipe on the partition plate, and the sound wave suddenly changes in the section of the expansion and contraction pipeline to cause the sudden change of the acoustic impedance in the channel, so that the propagation direction of the sound wave is changed, and the sound wave is reflected and interfered in the pipeline, thereby effectively realizing the silencing of the medium and low frequency noise; the perforated pipe also enables the airflow to be more uniform, and the high-frequency noise elimination quantity of the silencer can be improved; the structure forms a resistive and resistant composite noise elimination structure, so that the noise elimination of a broadband is realized.
The spiral flow deflector extending to the air inlet pipe is arranged on the partition plate, so that gas entering the air inlet pipe forms a rotational flow under the guidance of the spiral flow deflector and is blocked by the partition plate, spark carbon particles mixed in the gas flow are thrown to the wall of the air inlet pipe and the inner cylinder wall of the silencer cylinder body, the sparks collide with the cylinder wall to be quickly extinguished, and the extinguished spark carbon particles slide to the fire collecting port along the cylinder wall and finally enter the ash collecting hopper; in the silencing process of the airflow, the extinguishing of sparks and the cooling collection of carbon particles are realized, the silencer stuffing caused by the spark carbon particles is avoided, the stable silencing performance is ensured, and the burning explosion hidden danger caused by tail gas with sparks is effectively avoided.
Drawings
The rotary type fire extinguishing star double-cavity silencer is further explained by combining the attached drawings and the specific embodiment.
FIG. 1 is a schematic main sectional view of one embodiment of a rotary spark dual chamber muffler of the present invention;
fig. 2 is a schematic view of a cross-sectional structure a-a in the embodiment shown in fig. 1.
In the figure, 1-air inlet pipe, 2-silencer cylinder, 3-spiral flow deflector, 4-front expansion cavity, 5-division plate, 6-perforated pipe, 7-rear expansion cavity, 8-air outlet pipe, 9-air outlet pipe flange, 10-dust collecting port, 11-dust collecting hopper and 12-air inlet pipe flange.
Detailed Description
As shown in fig. 1 and 2, the silencer cylinder 2 of the rotary type dual-chamber silencer for fire extinguishing stars is of a cylindrical structure, the silencer cylinder 2 is of a double-layer structure, and sound absorption materials are filled in the double-layer wall of the cylinder wall and are rock wool or glass fiber. The inner cylinder wall of the silencer cylinder body 2 is a perforated plate, a plurality of perforations are uniformly distributed on the perforated plate, the perforation rate is 30%, the perforation aperture (perforation diameter) is 5mm, and a glass fiber cloth layer formed by laying glass fiber cloth is arranged between the sound absorption material and the inner cylinder wall. An air inlet pipe 1 is arranged at one end of the silencer cylinder body 2, and an air inlet pipe flange 12 is arranged at the extending end of the air inlet pipe 1; the other end of the silencer cylinder body 2 is provided with an air outlet pipe 8, and an air outlet pipe flange 9 is arranged at the extending end of the air outlet pipe 8. The air inlet pipe 1 and the air outlet pipe 8 are both circular pipe tubes, and the air inlet pipe 1 and the air outlet pipe 8 are positioned on the same straight line which is the central line of the cylinder cavity of the silencer cylinder body 2.
A partition plate 5 is fixedly arranged in the silencer cylinder 2, and the cylinder cavity of the silencer cylinder 2 is divided into a front expansion cavity 4 and a rear expansion cavity 7 by the partition plate 5; 4 perforated pipes 6 are supported on the partition plate 5, the perforated pipes 6 leading from the front expansion chamber 4 to the rear expansion chamber 7; the perforated tube 6 had a perforation rate of 25% and a perforation diameter of 5 mm.
A spiral flow deflector 3 is fixedly arranged on the partition plate 5, the spiral flow deflector 3 is a spiral blade without a mandrel, and the spiral flow deflector 3 extends into the pipe of the air inlet pipe 1; an ash collection opening 10 is provided in the muffler shell 2, and the ash collection opening 10 leads from the interior of the muffler shell 2 to an ash collection hopper 11. The ash collecting hopper 11 is fixedly arranged on the silencer cylinder body 2, and the position of the ash collecting hopper 11 corresponds to the position of the spiral flow deflector 3; the thrown carbon particles slide down from the dust collection port 10 along the inner wall of the muffler cylinder 2 into the dust collection hopper 11.
The foregoing has outlined some of the preferred embodiments of the present invention but the present invention is not limited thereto and modifications and variations may be made. For example, the sound absorption material can be rock wool or glass fiber, and can also be other common sound absorption materials; the inner wall of the silencer cylinder body has the perforation rate of preferably 25-30% and the perforation aperture of preferably 4-6 mm; the number of the perforated pipes supported on the partition plate is not limited to 4, but is at least 2 or more, preferably 2 to 10; the perforation rate of the perforated pipe (6) is preferably 25% to 30%, and the perforation diameter is preferably 4mm to 6 mm. Such variations and modifications are intended to fall within the scope of the present invention.
Claims (7)
1. The utility model provides a rotary star two-chamber silencer of putting out a fire, includes silencer barrel (2), and this silencer barrel (2) are cylindric structure, are provided with intake pipe (1) in the one end of silencer barrel (2), and the other end of silencer barrel (2) is provided with outlet duct (8), its characterized in that: the wall of the silencer cylinder (2) adopts a double-layer structure, sound absorption materials are filled in the cavity of the wall, and the inner wall of the silencer cylinder (2) is a perforated plate; a partition plate (5) is fixedly arranged in the silencer cylinder body (2), and the cylinder cavity of the silencer cylinder body (2) is divided into a front expansion cavity (4) and a rear expansion cavity (7) by the partition plate (5); at least 2 perforated pipes (6) are supported on the partition plate (5), and the perforated pipes (6) are communicated from the front expansion cavity (4) to the rear expansion cavity (7); a spiral flow deflector (3) is fixedly arranged on the partition plate (5), and the spiral flow deflector (3) extends into the pipe of the air inlet pipe (1); an ash collecting opening (10) is arranged on the silencer cylinder body (2), and the ash collecting opening (10) leads to an ash collecting hopper (11) from the cylinder cavity of the silencer cylinder body (2).
2. The rotary fire extinguishing star dual chamber muffler according to claim 1, wherein: the central lines of the air inlet pipe (1), the air outlet pipe (8) and the spiral flow deflector (3) are positioned on the central line of the silencer cylinder body (2).
3. The rotary fire extinguishing star dual chamber muffler according to claim 1, wherein: the spiral flow deflector (3) is a spiral blade, the ash collecting hopper (11) is fixedly arranged on the silencer cylinder body (2), and the position of the ash collecting hopper (11) corresponds to the position of the spiral flow deflector (3).
4. The rotary fire extinguishing star dual chamber muffler according to claim 1, wherein: 2-10 perforated pipes (6) are supported on the partition plate (5), the perforation rate of the perforated pipes (6) is 25% -30%, and the perforation aperture is 4-6 mm.
5. The rotary fire extinguishing star dual chamber muffler according to claim 1, wherein: the inner wall plate of the silencer cylinder body (2) has a perforation rate of 25% -30% and a perforation aperture of 4-6 mm.
6. The rotary fire extinguishing star dual chamber muffler according to claim 1, wherein: the sound absorption material is rock wool or glass fiber.
7. The rotary fire extinguishing star dual chamber muffler according to claim 1, wherein: and the outward extending end of the air inlet pipe (1) is provided with an air inlet pipe flange (12), and the outward extending end of the air outlet pipe (8) is provided with an air outlet pipe flange (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910946626.4A CN112610304A (en) | 2019-10-06 | 2019-10-06 | Rotary double-cavity silencer for extinguishing spark |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910946626.4A CN112610304A (en) | 2019-10-06 | 2019-10-06 | Rotary double-cavity silencer for extinguishing spark |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112610304A true CN112610304A (en) | 2021-04-06 |
Family
ID=75224824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910946626.4A Pending CN112610304A (en) | 2019-10-06 | 2019-10-06 | Rotary double-cavity silencer for extinguishing spark |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112610304A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2363065Y (en) * | 1999-01-19 | 2000-02-09 | 邝勇兴 | Multi-way rotary wing type combined noise silencer |
| CN104234890A (en) * | 2013-06-21 | 2014-12-24 | 重庆长安汽车股份有限公司 | High-frequency muffler used on automobile intercooler intake pipe |
| CN204532486U (en) * | 2014-12-26 | 2015-08-05 | 重庆博沃发动机配件制造有限公司 | The fire extinguishing star silencing apparatus of the strong noise reduction of low back pressure |
| CN206190365U (en) * | 2016-11-08 | 2017-05-24 | 上海怡允环境科技有限公司 | Formula of circling round spark extinguishing silencer |
| CN211230582U (en) * | 2019-10-06 | 2020-08-11 | 江苏业安环保设备科技有限公司 | Rotary double-cavity silencer for extinguishing spark |
-
2019
- 2019-10-06 CN CN201910946626.4A patent/CN112610304A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2363065Y (en) * | 1999-01-19 | 2000-02-09 | 邝勇兴 | Multi-way rotary wing type combined noise silencer |
| CN104234890A (en) * | 2013-06-21 | 2014-12-24 | 重庆长安汽车股份有限公司 | High-frequency muffler used on automobile intercooler intake pipe |
| CN204532486U (en) * | 2014-12-26 | 2015-08-05 | 重庆博沃发动机配件制造有限公司 | The fire extinguishing star silencing apparatus of the strong noise reduction of low back pressure |
| CN206190365U (en) * | 2016-11-08 | 2017-05-24 | 上海怡允环境科技有限公司 | Formula of circling round spark extinguishing silencer |
| CN211230582U (en) * | 2019-10-06 | 2020-08-11 | 江苏业安环保设备科技有限公司 | Rotary double-cavity silencer for extinguishing spark |
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