CN113494336B - Exhaust silencing post-treatment system and method - Google Patents
Exhaust silencing post-treatment system and method Download PDFInfo
- Publication number
- CN113494336B CN113494336B CN202110606727.4A CN202110606727A CN113494336B CN 113494336 B CN113494336 B CN 113494336B CN 202110606727 A CN202110606727 A CN 202110606727A CN 113494336 B CN113494336 B CN 113494336B
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- Prior art keywords
- silencing
- exhaust
- cylinder
- treatment
- tail gas
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 44
- 230000003584 silencer Effects 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/0335—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with exhaust silencers in a single housing
-
- 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
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/007—Apparatus used as intake or exhaust silencer
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses an exhaust silencing post-treatment system which comprises an exhaust gas inlet, an exhaust gas treatment structure, an exhaust silencing box, a silencing structure and an exhaust pipe, wherein the exhaust gas treatment structure and the silencing structure are integrally arranged in the exhaust silencing box, the exhaust gas inlet can be respectively communicated with only the air inlet end of the exhaust gas treatment structure and the air inlet end of the silencing structure, the air outlet end of the exhaust gas treatment structure is communicated with the air inlet end of the silencing structure, and the air outlet end of the silencing structure is communicated with the exhaust pipe. According to the exhaust silencing after-treatment method provided by the invention, a pneumatic control principle is adopted, and under the conditions of high-speed starting of an engine, high fuel pressure and high temperature, a bypass valve is opened, and the exhaust silencing after-treatment system only carries out silencing treatment on tail gas and then discharges the tail gas; under the conditions of engine starting, low speed and idle speed, the bypass valve is closed, and the exhaust silencing aftertreatment system captures particles of tail gas and exhausts the tail gas after silencing treatment, so that the problem of tail gas emission of the generator set is greatly improved.
Description
Technical Field
The invention belongs to the technical field of generator sets, and particularly relates to an exhaust silencing post-treatment system and method.
Background
The existing generator set only has a silencer device, has no tail gas treatment device, occupies large volume and high energy consumption, and causes serious pollution to the environment.
Accordingly, it would be desirable to provide a safe, reliable, and effective system for treating generator set exhaust and muffler gases.
Disclosure of Invention
Aiming at the problems existing in the tail gas emission of the existing generator set, the invention aims to provide an exhaust silencing after-treatment system and method which can effectively treat the tail gas and noise emitted by the generator set.
In order to achieve the above purpose, the exhaust silencing post-treatment system provided by the invention comprises an exhaust gas inlet, an exhaust gas treatment structure, an exhaust silencing box, a silencing structure and an exhaust pipe, wherein the exhaust gas treatment structure and the silencing structure are integrally arranged in the exhaust silencing box, the exhaust gas inlet can be respectively communicated with only the air inlet end of the exhaust gas treatment structure and the air inlet end of the silencing structure, the air outlet end of the exhaust gas treatment structure is communicated with the air inlet end of the silencing structure, and the air outlet end of the silencing structure is communicated with the exhaust pipe.
Further, the silencing structure comprises a first-stage silencing cylinder and a second-stage silencing cylinder, the air inlet end of the first-stage silencing cylinder is communicated with the tail gas air inlet, and the air outlet end of the first-stage silencing cylinder is communicated with the air inlet end of the second-stage silencing cylinder; and the air outlet end of the secondary silencing barrel is communicated with the exhaust pipe.
Further, the tail gas treatment structure comprises a DPF carrier, wherein the DPF carrier is arranged in a corresponding arranging groove of the exhaust silencing box and is positioned on a channel where a tail gas inlet is communicated with the primary silencing barrel.
Further, the DPF carrier is constituted by a honeycomb ceramic carrier.
Further, a channel is arranged on the DPF carrier, a bypass valve is cooperatively arranged on the channel, a driving part is cooperatively arranged on the bypass valve, and the channel can be opened and closed under the driving of the driving part.
Further, the driving part comprises a cylinder and an air pump, the air pump is in driving connection with the cylinder, the cylinder is in driving connection with the bypass valve through a cylinder rod, the cylinder is arranged on the exhaust sound-eliminating box through a cylinder arranging seat, and the air pump is also provided with an electromagnetic valve in a matched mode.
Further, the exhaust gas inlet and the exhaust pipe are arranged on the exhaust sound-eliminating box.
In order to achieve the above purpose, the invention also provides an exhaust silencing after-treatment method, which adopts a pneumatic control principle, and under the conditions that an engine is started at a high speed and the fuel pressure is high and the temperature is increased, a bypass valve is opened, and the exhaust silencing after-treatment system only carries out silencing treatment on the tail gas and then discharges the tail gas;
under the conditions of engine starting, low speed and idle speed, the bypass valve is closed, and the exhaust silencing after-treatment system captures particles of tail gas and discharges the tail gas after silencing.
According to the exhaust silencing after-treatment system provided by the invention, the DPF and the silencer are integrated, so that the volume of the generator set tail gas after-treatment device is reduced, engine tail gas is captured by the DPF particle catcher and then is treated by the silencing barrel, and the emission of the engine tail gas and the noise can be greatly reduced.
Drawings
The invention is further described below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of an exhaust silencing aftertreatment system in this example;
FIG. 2 is a schematic diagram of the bypass valve of the exhaust muffler aftertreatment system in this example closed;
fig. 3 is a schematic view of the structure of the exhaust silencing after-treatment system bypass valve in this example when opened.
The meaning of the reference numerals in the figures:
The exhaust silencer comprises an air pump 1, an air pipe 2, a DPF carrier 3, a bypass valve 4, an air cylinder 5, an air cylinder mounting seat 6, a primary silencing barrel 7, an exhaust silencer box 8, an exhaust pipe 9, a secondary silencing barrel 10, an electromagnetic valve 11 and an exhaust air inlet 12.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
The exhaust silencing aftertreatment system that this example provided through with tail gas treatment structure and amortization structure integration as an organic whole, has reduced generating set tail gas aftertreatment device's volume, and engine exhaust catches through tail gas treatment structure, again through amortization structure treatment, can greatly reduced engine exhaust emission and noise abatement.
The exhaust silencing post-treatment system provided by the example comprises a tail gas inlet 12, a tail gas treatment structure, a silencing structure and an exhaust pipe 9.
Wherein, tail gas air inlet 12 communicates with the inlet end of tail gas treatment structure and the inlet end of amortization structure respectively, and the outlet end of tail gas treatment structure communicates with the inlet end of amortization structure, and the outlet end of amortization structure communicates with blast pipe 9.
As shown in fig. 1, the silencing structure is used for eliminating noise generated when the tail gas of the generator set is discharged, and comprises a primary silencing cylinder 7 and a secondary silencing cylinder 10, which are both arranged in an exhaust silencing box 8.
Wherein, the end of giving vent to anger of the first-level amortization section of thick bamboo 7 communicates with the inlet end of second grade amortization section of thick bamboo 10, and the end of giving vent to anger of second grade amortization section of thick bamboo 10 communicates with blast pipe 9.
The exhaust gas treatment structure comprises a DPF carrier 3, wherein the DPF carrier 3 is arranged in a corresponding arrangement groove of an exhaust silencing box 8 and is positioned between an exhaust gas inlet 12 and a channel of a primary silencing barrel 7.
The exhaust gas inlet 12 can be respectively communicated with the air inlet end of the DPF carrier 3 and the air inlet end of the primary silencing cylinder 7, and is realized by arranging an openable and closable channel 3a on the DPF carrier 3 when the exhaust gas inlet is specifically arranged.
Further, a bypass valve 4 is arranged in cooperation with the channel 3a on the DPF carrier 3, and when the bypass valve 4 is opened, the tail gas inlet 12 is communicated with the air inlet end of the primary silencing barrel 7 through the channel 3a on the DPF carrier 3; when the bypass valve 4 is closed, the exhaust gas inlet 12 communicates with the intake end of the DPF carrier 3.
In addition, a cylinder 5 is arranged in cooperation with the bypass valve 4, the cylinder 5 is arranged on the exhaust sound-eliminating box 8 through a cylinder mounting seat 6, an air pump 1 is also arranged in cooperation with the cylinder 5, and the cylinder 5 is connected with the air pump 1 through an air pipe 2.
The cylinder 5 is in driving connection with the bypass valve 4 through a cylinder rod, and can control the opening and closing of the bypass valve 4.
And an electromagnetic valve 11 of an electric control system is also arranged in cooperation with the air pump 1, so that the action of the air cylinder 5 can be controlled.
Based on the exhaust silencing post-treatment system with the structure, the example also provides an exhaust silencing post-treatment method, which comprises the following steps:
As shown in fig. 2, during engine start-up, low speed and idle speed, the exhaust gas discharged from the engine contains more particles due to insufficient combustion of fuel, at this time, the engine control system controls the electromagnetic valve 11 and the cylinder 5 to operate, and closes the bypass valve 4, at this time, the gas enters from the exhaust gas inlet 12 in the direction shown by the arrow in the figure, and when flowing through the DPF carrier 3, the DPF captures the particles in the exhaust gas discharged, and then the exhaust gas passes through the primary silencing cylinder 7, the secondary silencing cylinder 10 and finally is discharged from the exhaust pipe 9.
As shown in fig. 3, when the engine is started at a high speed and the fuel pressure is high and the temperature is high, the exhaust gas discharged from the engine contains few particles due to the sufficient combustion of the fuel, at this time, the electronic control system controls the electromagnetic valve 11 and the cylinder 5 to act, and opens the bypass valve 4, at this time, the gas enters through the exhaust gas inlet 12, passes through the channel 3a on the DPF carrier 3, passes through the primary silencing cylinder 7, the secondary silencing cylinder 10, and finally is discharged through the exhaust pipe 9.
According to the exhaust silencing aftertreatment system provided by the invention, a pneumatic control principle is adopted, and the bypass valve is opened under the conditions of high-speed starting of an engine, high fuel pressure and high temperature rise; under the conditions of engine starting, low speed and idle speed operation, the bypass valve is closed to capture particles, so that the emission problem is greatly improved, and meanwhile, the pneumatic control valve is far away from high temperature, so that the safety and energy consumption are low, and the requirements on reliability and economy are met.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The exhaust silencing post-treatment system is characterized by comprising an exhaust gas inlet, an exhaust gas treatment structure, an exhaust silencing box, a silencing structure and an exhaust pipe, wherein the exhaust gas treatment structure and the silencing structure are integrally arranged in the exhaust silencing box, the exhaust gas inlet can be respectively communicated with only the air inlet end of the exhaust gas treatment structure and the air inlet end of the silencing structure, the air outlet end of the exhaust gas treatment structure is communicated with the air inlet end of the silencing structure, and the air outlet end of the silencing structure is communicated with the exhaust pipe; the silencing structure comprises a primary silencing cylinder and a secondary silencing cylinder, wherein the air inlet end of the primary silencing cylinder is communicated with the tail gas air inlet, and the air outlet end of the primary silencing cylinder is communicated with the air inlet end of the secondary silencing cylinder; the air outlet end of the secondary silencing barrel is communicated with the exhaust pipe; the tail gas treatment structure comprises a DPF carrier which is arranged in a corresponding arranging groove of the exhaust silencing box and is positioned on a channel of the tail gas inlet communicated with the primary silencing barrel; the DPF carrier is composed of a honeycomb ceramic carrier; the DPF carrier is provided with a channel, a bypass valve is cooperatively arranged on the channel, a driving part is cooperatively arranged on the bypass valve, and the channel can be opened and closed under the driving of the driving part; the driving part comprises a cylinder and an air pump, the air pump is in driving connection with the cylinder, the cylinder is in driving connection with a bypass valve through a cylinder rod, the cylinder is arranged on an exhaust sound-eliminating box through a cylinder arranging seat, and the air pump is also provided with an electromagnetic valve in a matched mode.
2. The exhaust silencing aftertreatment system of claim 1, wherein the exhaust gas inlet and exhaust pipe are disposed on an exhaust muffler box.
3. An exhaust silencing after-treatment method is characterized in that the treatment method is based on the exhaust silencing after-treatment system according to claim 1 or 2, and adopts a pneumatic control principle, and under the conditions that an engine is started at a high speed, the fuel pressure is high and the temperature is high, a bypass valve is opened, and the exhaust silencing after-treatment system only carries out silencing treatment on tail gas and then is discharged;
under the conditions of engine starting, low speed and idle speed, the bypass valve is closed, and the exhaust silencing after-treatment system captures particles of tail gas and discharges the tail gas after silencing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110606727.4A CN113494336B (en) | 2021-05-31 | 2021-05-31 | Exhaust silencing post-treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110606727.4A CN113494336B (en) | 2021-05-31 | 2021-05-31 | Exhaust silencing post-treatment system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113494336A CN113494336A (en) | 2021-10-12 |
| CN113494336B true CN113494336B (en) | 2024-05-28 |
Family
ID=77997253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110606727.4A Active CN113494336B (en) | 2021-05-31 | 2021-05-31 | Exhaust silencing post-treatment system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113494336B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001159306A (en) * | 1999-12-02 | 2001-06-12 | Global Patent Network:Kk | Internal combustion engine |
| CN201666173U (en) * | 2010-04-20 | 2010-12-08 | 重庆大学 | Exhaust muffler capable of adjusting flow area automatically |
| WO2012044649A2 (en) * | 2010-09-30 | 2012-04-05 | Electro-Motive Diesel, Inc. | Burner arrangement for a two-stroke locomotive diesel engine having an exhaust aftertreatment system |
| WO2014084024A1 (en) * | 2012-11-30 | 2014-06-05 | いすゞ自動車株式会社 | Natural gas engine and operation method for natural gas engine |
| CN205605272U (en) * | 2016-05-06 | 2016-09-28 | 石家庄蓝宇净化机械设备有限公司 | Large -scale maintenance vehicle exhaust purifier of railway |
| CN207212441U (en) * | 2017-07-24 | 2018-04-10 | 深圳市贝斯特净化设备有限公司 | Exhaust gas cleaner |
| US9944376B1 (en) * | 2016-04-01 | 2018-04-17 | Brunswick Corporation | Actively tunable exhaust systems for outboard marine engines |
| CN112523852A (en) * | 2021-01-15 | 2021-03-19 | 福建亚南电机有限公司 | Tail gas purification and noise elimination system for generator set and working method |
| CN214836634U (en) * | 2021-05-31 | 2021-11-23 | 孚创动力控制技术（启东）有限公司 | Exhaust silencing post-treatment station structure |
-
2021
- 2021-05-31 CN CN202110606727.4A patent/CN113494336B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001159306A (en) * | 1999-12-02 | 2001-06-12 | Global Patent Network:Kk | Internal combustion engine |
| CN201666173U (en) * | 2010-04-20 | 2010-12-08 | 重庆大学 | Exhaust muffler capable of adjusting flow area automatically |
| WO2012044649A2 (en) * | 2010-09-30 | 2012-04-05 | Electro-Motive Diesel, Inc. | Burner arrangement for a two-stroke locomotive diesel engine having an exhaust aftertreatment system |
| WO2014084024A1 (en) * | 2012-11-30 | 2014-06-05 | いすゞ自動車株式会社 | Natural gas engine and operation method for natural gas engine |
| US9944376B1 (en) * | 2016-04-01 | 2018-04-17 | Brunswick Corporation | Actively tunable exhaust systems for outboard marine engines |
| CN205605272U (en) * | 2016-05-06 | 2016-09-28 | 石家庄蓝宇净化机械设备有限公司 | Large -scale maintenance vehicle exhaust purifier of railway |
| CN207212441U (en) * | 2017-07-24 | 2018-04-10 | 深圳市贝斯特净化设备有限公司 | Exhaust gas cleaner |
| CN112523852A (en) * | 2021-01-15 | 2021-03-19 | 福建亚南电机有限公司 | Tail gas purification and noise elimination system for generator set and working method |
| CN214836634U (en) * | 2021-05-31 | 2021-11-23 | 孚创动力控制技术（启东）有限公司 | Exhaust silencing post-treatment station structure |
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| Publication number | Publication date |
|---|---|
| CN113494336A (en) | 2021-10-12 |
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