CN113494336A - Exhaust silencing post-treatment system and method - Google Patents
Exhaust silencing post-treatment system and method Download PDFInfo
- Publication number
- CN113494336A CN113494336A CN202110606727.4A CN202110606727A CN113494336A CN 113494336 A CN113494336 A CN 113494336A CN 202110606727 A CN202110606727 A CN 202110606727A CN 113494336 A CN113494336 A CN 113494336A
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- Prior art keywords
- exhaust
- silencing
- treatment
- tail gas
- bypass valve
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 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
- 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
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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
- 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
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- 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)
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 integrated in the exhaust silencing box, the exhaust gas inlet can be respectively communicated with 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 exhaust silencing post-treatment method provided by the invention adopts a pneumatic control principle, and under the conditions of high-speed starting of an engine, high fuel pressure and increased temperature, a bypass valve is opened, and an exhaust silencing post-treatment system only carries out silencing treatment on tail gas and then discharges the tail gas; under the work of engine start, low-speed and idle speed, the bypass valve is closed, and exhaust silencing after-treatment system carries out particle capture and silencing treatment on tail gas and then discharges, has improved generating set's exhaust emission problem greatly.
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 and no tail gas treatment device, occupies large volume and has high energy consumption, and serious pollution is caused to the environment.
Therefore, it is a problem to be solved by those skilled in the art to provide a safe, reliable and effective exhaust and silencing system for a power generating unit.
Disclosure of Invention
Aiming at the problems of tail gas emission of the existing generator set, the invention aims to provide an exhaust silencing post-treatment system and method, which can effectively treat the tail gas and noise emitted by the generator set.
In order to achieve the above object, the exhaust silencing post-treatment system provided by the present 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 integrated in the exhaust silencing box, the exhaust gas inlet can be respectively communicated with only the gas inlet end of the exhaust gas treatment structure and the gas inlet end of the silencing structure, the gas outlet end of the exhaust gas treatment structure is communicated with the gas inlet end of the silencing structure, and the gas outlet end of the silencing structure is communicated with the exhaust pipe.
Furthermore, the silencing structure comprises a primary silencing barrel and a secondary silencing barrel, wherein the air inlet end of the primary silencing barrel is communicated with the tail gas inlet, and the air outlet end of the primary silencing barrel is communicated with the air inlet end of the secondary silencing barrel; and the air outlet end of the secondary silencing barrel is communicated with the exhaust pipe.
Furthermore, the tail gas treatment structure comprises a DPF carrier, wherein the DPF carrier is arranged in a corresponding arrangement groove of the exhaust silencing box and is positioned on a channel communicated with the primary silencing barrel through a tail gas inlet.
Further, the DPF carrier is composed of a honeycomb ceramic carrier.
Furthermore, a channel is arranged on the DPF carrier, a bypass valve is arranged on the channel in a matched mode, a driving component is arranged on the bypass valve in a matched mode, and the channel can be opened and closed under the driving of the driving component.
Further, the driving component comprises an air cylinder and an air pump, the air pump is in driving connection with the air cylinder, the air cylinder is in driving connection with the bypass valve through an air cylinder rod, the air cylinder is arranged on the exhaust silencing box through an air cylinder arranging seat, and the air pump is further provided with an electromagnetic valve in a matched mode.
Further, the tail gas inlet and the exhaust pipe are arranged on the exhaust silencing box.
In order to achieve the purpose, the invention also provides an exhaust silencing post-treatment method, which adopts a pneumatic control principle, wherein the bypass valve is opened under the conditions of high-speed starting of an engine, high fuel pressure and increased temperature, and the exhaust silencing post-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 idling, the bypass valve is closed, and the exhaust silencing after-treatment system captures particles in the exhaust and discharges the exhaust after silencing treatment.
According to the exhaust silencing post-treatment system provided by the invention, the DPF and the silencer are integrated, the volume of the generator set tail gas post-treatment device is reduced, the engine tail gas is captured by the DPF particle catcher and treated by the silencing barrel, and the exhaust emission of the engine tail gas can be greatly reduced and the noise can be eliminated.
Drawings
The invention is further described below in conjunction with the appended drawings and the detailed description.
FIG. 1 is a schematic view of the structure of an exhaust muffler aftertreatment system in this example;
FIG. 2 is a schematic illustration of the exhaust muffler aftertreatment system bypass valve closed in this example;
fig. 3 is a schematic view of the construction of the exhaust muffler aftertreatment system with the bypass valve open in this example.
The reference numbers in the figures mean:
the exhaust muffler 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 muffling cylinder 7, an exhaust muffling box 8, an exhaust pipe 9, a secondary muffling cylinder 10, an electromagnetic valve 11 and a tail gas inlet 12.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
This example provides an exhaust amortization after treatment system, through being integrated as an organic whole with tail gas treatment structure and amortization structure, has reduced generating set tail gas after treatment device's volume, and engine exhaust catches through tail gas treatment structure, handles through amortization structure again, can greatly reduced engine exhaust emission and noise abatement.
The exhaust silencing after-treatment system provided by the embodiment comprises an exhaust gas inlet 12, an exhaust gas treatment structure, a silencing structure and an exhaust pipe 9.
The tail gas inlet 12 is respectively communicated with the inlet end of the tail gas treatment structure and the inlet end of the silencing structure, the outlet end of the tail gas treatment structure is communicated with the inlet end of the silencing structure, and the outlet end of the silencing structure is communicated with the exhaust pipe 9.
As shown in fig. 1, the silencing structure is used for eliminating noise generated during exhaust emission of the generator set, and comprises a primary silencing barrel 7 and a secondary silencing barrel 10, which are both arranged in an exhaust silencing box 8.
Wherein, the air outlet end of the first-stage silencing barrel 7 is communicated with the air inlet end of the second-stage silencing barrel 10, and the air outlet end of the second-stage silencing barrel 10 is communicated with the exhaust 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 inlet end of the DPF carrier 3 and the inlet end of the primary silencing pot 7, and is realized by arranging a channel 3a which can be opened and closed on the DPF carrier 3 during the specific arrangement.
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 pot 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 inlet 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 an exhaust silencing box 8 through a cylinder mounting seat 6, an air pump 1 is further 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.
Meanwhile, an electromagnetic valve 11 of an electric control system is arranged in cooperation with the air pump 1 and can be used for controlling the action of the air cylinder 5.
Based on the exhaust silencing after-treatment system with the structure, the embodiment also provides the exhaust silencing after-treatment method, which comprises the following steps:
as shown in fig. 2, when the engine is started, at low speed and at idle speed, because fuel is not sufficiently combusted, the exhaust gas discharged from the engine contains a large amount of particulates, the power generation control system controls the operation of the electromagnetic valve 11 and the cylinder 5 to close the bypass valve 4, at this time, gas enters from the exhaust gas inlet 12 in the direction indicated by the arrow in the figure, and when the gas flows through the DPF carrier 3, the DPF traps particulates in the discharged exhaust gas, and then the exhaust gas passes through the primary silencing pot 7, the secondary silencing pot 10, and finally is discharged from the exhaust pipe 9.
As shown in figure 3, when the engine is started at a high speed, the fuel pressure is high, and the temperature is increased, because the fuel is fully combusted, the exhaust gas discharged by the engine contains few particles, at the moment, the electronic control system controls the electromagnetic valve 11 and the cylinder 5 to act, the bypass valve 4 is opened, at the moment, the gas enters from the exhaust gas inlet 12, passes through the channel 3a on the DPF carrier 3, passes through the primary silencing pot 7, the secondary silencing pot 10 and finally is discharged from the exhaust pipe 9.
The exhaust silencing post-treatment system provided by the invention adopts a pneumatic control principle, and a bypass valve is opened under the conditions of high-speed starting of an engine, high fuel pressure and increased temperature; under the conditions of engine starting, low speed and idling 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 pneumatic control valve is safe and low in energy consumption, and meets the requirements on reliability and economy.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an exhaust amortization after-treatment system, its characterized in that, includes tail gas air inlet, tail gas processing structure, exhaust amortization case, amortization structure and blast pipe, tail gas processing structure and amortization structure integration set up in the exhaust amortization case, the tail gas air inlet can only communicate with the inlet end of tail gas processing structure and amortization structure respectively, the inlet end intercommunication of giving vent to anger end and the amortization structure of tail gas processing structure, the end and the blast pipe intercommunication of giving vent to anger of amortization structure.
2. The exhaust silencing aftertreatment system according to claim 1, wherein the silencing structure comprises a primary silencing pot and a secondary silencing pot, wherein an air inlet end of the primary silencing pot is communicated with an exhaust inlet, and an air outlet end of the primary silencing pot is communicated with an air inlet end of the secondary silencing pot; and the air outlet end of the secondary silencing barrel is communicated with the exhaust pipe.
3. The exhaust silencing after-treatment system of claim 1, wherein the exhaust treatment structure comprises a DPF carrier, and the DPF carrier is arranged in a corresponding arrangement groove of the exhaust silencing box and is positioned on a channel of the exhaust inlet communicated with the primary silencing pot.
4. The exhaust gas sound-deadening aftertreatment system according to claim 3, wherein the DPF carrier is constituted by a honeycomb ceramic carrier.
5. The exhaust silencing aftertreatment system according to claim 3, wherein the DPF carrier is provided with a passage, the passage is cooperatively provided with a bypass valve, and the bypass valve is cooperatively provided with an actuating member and can open and close the passage under the actuation of the actuating member.
6. The exhaust silencing aftertreatment system of claim 5, wherein the driving component comprises an air cylinder and an air pump, the air pump is in driving connection with the air cylinder, the air cylinder is in driving connection with a bypass valve through an air cylinder rod, the air cylinder is arranged on the exhaust silencing box through an air cylinder arranging seat, and the air pump is further provided with a solenoid valve in a matching manner.
7. The exhaust silencing aftertreatment system of claim 1, wherein the exhaust inlet and exhaust pipe are disposed on an exhaust silencing chamber.
8. A method for exhaust silencing after-treatment is characterized in that a pneumatic control principle is adopted, a bypass valve is opened under the conditions of high-speed starting of an engine, high fuel pressure and high temperature rise, and an 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 idling, the bypass valve is closed, and the exhaust silencing after-treatment system captures particles in the exhaust and discharges the exhaust after silencing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110606727.4A CN113494336A (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 CN113494336A (en) | 2021-05-31 | 2021-05-31 | Exhaust silencing post-treatment system and method |
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| Publication Number | Publication Date |
|---|---|
| CN113494336A true CN113494336A (en) | 2021-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110606727.4A Pending CN113494336A (en) | 2021-05-31 | 2021-05-31 | Exhaust silencing post-treatment system and method |
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| Country | Link |
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| CN (1) | CN113494336A (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/CN113494336A/en active Pending
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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