CN209413973U - A kind of silencer and its accelerant installing structure - Google Patents
A kind of silencer and its accelerant installing structure Download PDFInfo
- Publication number
- CN209413973U CN209413973U CN201821950893.6U CN201821950893U CN209413973U CN 209413973 U CN209413973 U CN 209413973U CN 201821950893 U CN201821950893 U CN 201821950893U CN 209413973 U CN209413973 U CN 209413973U
- Authority
- CN
- China
- Prior art keywords
- pipe
- reaction tube
- exhaust gas
- accelerant
- catalyst
- 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 - Fee Related
Links
- 230000003584 silencer Effects 0.000 title claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 71
- 239000003054 catalyst Substances 0.000 claims abstract description 53
- 238000003466 welding Methods 0.000 claims description 8
- 230000030279 gene silencing Effects 0.000 claims description 7
- 230000002776 aggregation Effects 0.000 claims description 4
- 238000004220 aggregation Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 7
- 230000007480 spreading Effects 0.000 abstract description 3
- 238000003892 spreading Methods 0.000 abstract description 3
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 51
- 230000009467 reduction Effects 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000037361 pathway Effects 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 210000004262 dental pulp cavity Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a kind of accelerant installing structure and silencer, including equipped with catalyst reaction tube, introduce exhaust gas into reaction tube air inlet pipe, by the exhaust pipe of exhaust gas discharge reaction tube；The collecting pipe for making exhaust gas reduced velocity flow is equipped between the inlet end of the reaction tube and the nozzle of air inlet pipe, the internal diameter of the collecting pipe is greater than the internal diameter of air inlet pipe.Collecting pipe enters back into reaction tube after spreading apart the reduced velocity flow of the exhaust gas by way of it, exhaust gas in collecting pipe, avoids that exhaust gas velocity is too fast to be had little time diffusion and just enter catalyst, leads to the exhaust gas concentration of local in catalyst, catalyst reaction is insufficient；Improve the reaction efficiency of catalyst.A kind of silencer comprising the accelerant installing structure is additionally provided simultaneously, with the raising of catalyst reaction efficiency, the cleaning capacity of silencer is improved, and can preferably adapt to constantly stringent national emission standard.
Description
Technical field
The utility model relates to the exhaust apparatus of locomotive engine, especially a kind of silencer and its accelerant installing structure.
Background technique
The exhaust emission of motorcycle mainly has hydrocarbon, nitrogen oxides, and the pernicious gases such as carbon monoxide are based on ring
Border is polluted increasingly serious, and the exhaust gas problem of motorcycle receives the universal concern of countries in the world, and China is also mentioned constantly
High motorcycle exhaust discharge standard.The discharge exhaust gas of general motorcycle can be discharged by silencer, and silencer is a kind of to allow gas
While stream passes through, and can effectively it organize or device that decrease sound can be propagated outward is set in silencer to purify exhaust gas
Setting catalyst is a kind of common technological means.Accelerant installing structure in existing silencer is designed there are unreasonable place, is made
Catalyst cannot be utilized effectively, affect the reaction efficiency of catalyst, keep the absorption of exhaust gas not thorough enough.
Utility model content
In order to overcome the shortcomings of that existing accelerant installing structure, the utility model provide a kind of catalyst installation knot of silencer
Structure, the structure come into full contact with exhaust gas with catalyst, improve the reaction efficiency of catalyst.It additionally provides simultaneously a kind of comprising catalyst peace
The silencer of assembling structure, the silencer are high to the absorption efficiency of exhaust gas, environmentally friendly.
Technical solution used by solving the problems, such as it in the embodiments of the present invention is:
A kind of accelerant installing structure of silencer, including being equipped with the reaction tube of catalyst, introducing exhaust gas into the air inlet of reaction tube
Pipe, the exhaust pipe that exhaust gas is discharged to reaction tube；Being equipped between the inlet end of the reaction tube and the nozzle of air inlet pipe makes waste gas stream
The collecting pipe that speed slows down, the internal diameter of the collecting pipe are greater than the internal diameter of air inlet pipe.Because often flow velocity is very fast for the exhaust gas of motor vehicle,
Exhaust gas, which is gone to, is arranged a collecting pipe on the travel path of reaction tube；The collecting pipe gas outlet and the catalyst that increase air inlet pipe first
The distance between air inlet face；And the internal diameter of collecting pipe is greater than the internal diameter of air inlet pipe, by increasing on exhaust gas circulating pathway
The mode of diameter reduces exhaust gas flow velocity；Collecting pipe enters back into reaction tube after exhaust gas is uniformly spread, and avoids catalyst reaction not
Sufficiently.
Preferably, the reducing pipe with aggregation feature is equipped between the outlet side of the reaction tube and the nozzle of exhaust pipe.
The unexpected reduction of the upper caliber of high-velocity fluid pipeline has flow-disturbing in joint and generates, and the service life of butt joint adversely affects,
The resistance of fluid is advantageously reduced using reducing pipe.
Preferably, it is connected and sealed between the collecting pipe and air inlet pipe by welding, the reducing pipe and exhaust pipe
Between by welding be connected and sealed.It is connected and sealed using the mode of welding, which has firm in structure
Advantage.
Preferably, the reaction tube, collecting pipe and reducing pipe are integrally formed.Because motorcycle is difficult during enforcement
Exempt to jolt, integrally makes structure more firm, avoid the risk that falls off each other.
Preferably, any and reaction tube is attached by clip in the collecting pipe and reducing pipe.Clamp connection has
The reliable feature of structure, and clamp connection is removably to connect, and is conveniently replaceable catalyst, be conducive to later maintenance it is simple just
It is prompt.
Preferably, the inner surface size of the reaction tube and the exterior surface dimension of catalyst match.It can be farthest
Using space, the occupied space of accelerant installing structure is reduced.
Preferably, the internal diameter of the collecting pipe is not less than the outer diameter of reaction tube.
Preferably, silencing means is equipped in the collecting pipe or reducing pipe.Exhaust apparatus usually also needs to undertake reduction row
The effect of gas noise is equipped with silencing means in collecting pipe or reducing pipe, is conducive to the overall performance for improving exhaust apparatus.
Preferably, silencing means is equipped in the collecting pipe or reducing pipe.
A kind of silencer includes above-mentioned accelerant installing structure.The raising of adjoint catalyst reaction efficiency, so that silencer
Cleaning capacity is improved.
The beneficial effects of the utility model are: the utility model embodiment provides a kind of catalyst installation knot of silencer
Structure, including equipped with catalyst reaction tube, introduce exhaust gas into reaction tube air inlet pipe, by exhaust gas discharge reaction tube exhaust pipe；Institute
State the collecting pipe for being equipped between the inlet end of reaction tube and the nozzle of air inlet pipe and making exhaust gas reduced velocity flow, the internal diameter of the collecting pipe
Greater than the internal diameter of air inlet pipe.By increase collecting pipe make approach its exhaust gas reduced velocity flow, exhaust gas spreads in collecting pipe
Reaction tube is entered back into after even；It avoids exhaust gas not spreading before the catalyst entered in reaction tube uniformly, exhaust gas concentration of local makes
It obtains catalyst and there is the case where influence catalyst reaction efficiency of reaction dead zone (no exhaust gas flows through) during the reaction.It also mentions simultaneously
A kind of silencer comprising the accelerant installing structure has been supplied, with the raising of catalyst reaction efficiency, has enabled the cleaning of silencer
Power is improved, and can preferably adapt to constantly stringent national emission standard.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of the section structure of the utility model embodiment；
Fig. 2 is the overall structure diagram of the utility model embodiment；
100- reaction tube, 200- air inlet pipe, 300- exhaust pipe, 400- collecting pipe, 500- reducing pipe, 600- catalyst.
Specific embodiment
Referring to attached drawing 1-2, the utility model embodiment provides a kind of accelerant installing structure, including being equipped with catalyst 600
Reaction tube 100, the air inlet pipe 200 for introducing exhaust gas into reaction tube 100, by exhaust gas discharge reaction tube 100 exhaust pipe 300；It is described
The collecting pipe 400 for making exhaust gas reduced velocity flow, the collection are equipped between the inlet end of reaction tube 100 and the nozzle of air inlet pipe 200
The internal diameter of pipe 400 is greater than the internal diameter of air inlet pipe 200.
Existing air inlet pipe 200 and the connection structure of the reaction tube 100 equipped with catalyst 600 are unreasonable.In existing technology,
Air inlet pipe 200 is directly connected by welding with the reaction tube 100 equipped with catalyst, due to design defect or defective workmanship, is caused
Air inlet face of the gas outlet of air inlet pipe 200 apart from catalyst 600 is too close；Since the internal diameter of existing air inlet pipe 200 is less than catalyst 600
The diameter of air inlet face, exhaust gas has the characteristics that excessive velocities in addition, when exhaust gas entered from lesser air inlet pipe 200 it is biggish
In catalyst 600, if the exhaust gas of high speed has little time diffusion and just enters catalyst 600 apart from too small, lead to the exhaust gas in catalyst 600
Concentration of local, while there is reaction dead zone (there is no exhaust gas process) again, catalyst 600 reacts insufficient.
The utility model embodiment is additionally arranged collecting pipe 400, increases gas outlet and 600 air inlet of catalyst of air inlet pipe 200
The distance between face, it is preferred that the axial length of collecting pipe 400 is greater than 20mm.Further, the present embodiment collecting pipe 400
Internal diameter is greater than the internal diameter of air inlet pipe 200, by way of dilatation, that is, increases the internal diameter on exhaust gas circulating pathway to reduce gas stream
Speed；So that exhaust gas enters back into the catalyst 600 of reaction tube 100 after spreading in collecting pipe 400 uniformly.It further, can be with
The air-flow of exhaust gas is upset by placing obstacles object to make reduced velocity flow, is such as set on the circulating pathway of exhaust gas in collecting pipe 400
Set the spoiler for slowing down exhaust gas flowing velocity.
Further, it is equipped between the outlet side of the reaction tube 100 and the nozzle of exhaust pipe 300 with aggregation feature
Reducing pipe 500.The characteristics of reducing pipe 500 is gradually reduced equipped with internal diameter, advantageously reduces the resistance of fluid.
In order to guarantee the leakproofness on circulation passage, between the preferably described collecting pipe 400 and air inlet pipe 200 by weld into
Row is tightly connected, and is connected and sealed between the reducing pipe 500 and exhaust pipe 300 by welding.Welding is that the industry is common
Connection means, have the advantages that simple in structure, good airproof performance.
Further, since motorcycle inevitably jolts in the process of moving, optimal in structure, reaction tube 100, collecting pipe
400 and reducing pipe 500 be integrally formed, integrally formed structure is more firm, avoids the risk that falls off each other.
If it is considered that cost of upkeep in the future, optionally, in the collecting pipe 400 and reducing pipe 500 it is any with react
Pipe 100 is attached by clip.When catalyst 600 has reached its service life, the cleaning capacity decline of exhaust apparatus, in order to protect
Card reaches discharge standard needs and takes timely measure.The detachable advantage that clamp connection provides, can be by only replacing catalyst
600 be less the entire silencer of replacement to restore the cleaning capacity of silencer, has saved the cost of follow-up maintenance.
The mode of clamp connection can also be selected to be attached, the specific structure of clamp connection is as follows: two need to connect
The pipe being connected together is equipped with the groove being adapted with clip in joint, and two root canals are arranged mutually, when being arranged at two pipe fittings
Groove be overlapped, clip is set on the groove of outer tube and locks, so that two root canals are fastenedly connected.
For motorcycle due to the install compact of each part, preferably each structure is other in the case where meeting function as far as possible
The more spaces of modular construction, it is preferred that the inner surface size of reaction tube 100 and the exterior surface dimension of catalyst 600 match, can
In the case where making full use of catalyst 600, to save the whole occupied space of structure.
Optimal in structure, the internal diameter of the collecting pipe 400 is not less than the outer diameter of reaction tube 100.Setting in reaction tube 100
There is catalyst 600, in order to come into full contact with 600 contact surface of catalyst in reaction tube 100 with exhaust gas, the internal diameter of collecting pipe 400 is not small
In the outer diameter of reaction tube 100, enable the exhaust gas flowed out from collecting pipe 400 out that the exhaust gas entrance of reaction tube 100 is completely covered, guarantees
The cross section of catalyst 600 in reaction tube 100 can come into full contact with exhaust gas.
Further, it is equipped with silencing means in the collecting pipe 400 or reducing pipe 500, noise reduction is equipped in collecting pipe 400
Device is conducive to the overall performance for improving exhaust apparatus.Common silencing means includes silencer cover, and silencer cover is that tool is round-meshed
Thin slice, sound proof housing generate interference effect to sound wave by circular hole；Silencing means is also possible to that the silicon of 400 inner wall of collecting pipe is arranged in
Sour aluminium noise reduction film eliminates sound wave by inhaling suction-operated.
A kind of silencer includes accelerant installing structure described above.With the raising of 600 reaction efficiency of catalyst, make to disappear
The pollutant discharge amount of sound device reduces, and the cleaning capacity of silencer is improved.
Specific description is done with regard to an embodiment of the present invention below.
An embodiment of the present invention, a kind of accelerant installing structure of silencer, the reaction including being equipped with catalyst 600
Pipe 100, the inner surface size of reaction tube 100 and the exterior surface dimension of catalyst 600 match；It further include introducing exhaust gas into reaction tube
100 air inlet pipe 200, the exhaust pipe 300 that exhaust gas is discharged to reaction tube 100；The inlet end and air inlet pipe of the reaction tube 100
The collecting pipe 400 for making exhaust gas reduced velocity flow is equipped between 200 nozzle, welded seal connects between collecting pipe 400 and air inlet pipe 200
It connects；The reducing pipe 500 with aggregation feature is equipped between the outlet side of reaction tube 100 and the nozzle of exhaust pipe 300, it is described tapered
It is connected between pipe 500 and exhaust pipe 300 by welded seal；Wherein reducing pipe 500, reaction tube 100, the one of collecting pipe 400 at
Type.The internal diameter of the collecting pipe 400 is greater than the internal diameter of air inlet pipe 200, and the axial length of the collecting pipe 400 is greater than 20mm.
Exhaust gas is sprayed from the waste gas outlet of engine, and the diameter of waste gas outlet is 30mm, and exhaust gas by being by internal diameter
30mm air inlet pipe 200 passes sequentially through collecting pipe 400, and internal diameter is 42mm to collecting pipe 400 in the present embodiment, and axial length is
20mm；Again by being the reaction tube 100 of 42mm catalyst 600, the internal diameter of reaction tube 100 and the outer diameter ruler of catalyst 600 equipped with outer diameter
Very little fitting, as 42mm；After exhaust gas is sufficiently reacted with catalyst 600, enter in the reducing pipe 500 that maximum inner diameter is 42mm,
It finally enters in the exhaust pipe 300 that internal diameter is 30mm.
The utility model embodiment additionally provides a kind of silencer, includes above-mentioned accelerant installing structure.With catalyst 600
The cleaning capacity of the raising of reaction efficiency, silencer is improved.
More than, only the preferred embodiment of the utility model, the utility model are not limited to above embodiment,
As long as its technical effect for reaching the utility model with identical means, all should belong to the protection scope of the utility model.
Claims (10)
1. a kind of accelerant installing structure of silencer, it is characterised in that:
Including equipped with catalyst reaction tube, introduce exhaust gas into reaction tube air inlet pipe, by exhaust gas discharge reaction tube exhaust pipe；Institute
State the collecting pipe for being equipped between the inlet end of reaction tube and the nozzle of air inlet pipe and making exhaust gas reduced velocity flow, the internal diameter of the collecting pipe
Greater than the internal diameter of air inlet pipe.
2. a kind of accelerant installing structure of silencer according to claim 1, it is characterised in that: the outlet of the reaction tube
The reducing pipe with aggregation feature is equipped between end and the nozzle of exhaust pipe.
3. a kind of accelerant installing structure of silencer according to claim 2, it is characterised in that: the collecting pipe and air inlet
It is connected and sealed between pipe by welding, is connected and sealed between the reducing pipe and exhaust pipe by welding.
4. a kind of accelerant installing structure of silencer according to claim 3, it is characterised in that: the reaction tube, collection
Pipe and reducing pipe are integrally formed.
5. a kind of accelerant installing structure of silencer according to claim 3, it is characterised in that: the collecting pipe and tapered
Any and reaction tube is attached by clip in pipe.
6. a kind of accelerant installing structure of silencer according to claim 1, it is characterised in that: the interior table of the reaction tube
The exterior surface dimension of face size and catalyst matches.
7. a kind of accelerant installing structure of silencer according to claim 1, it is characterised in that: the internal diameter of the collecting pipe
Not less than the outer diameter of reaction tube.
8. a kind of accelerant installing structure of silencer according to claim 1, it is characterised in that: the axial direction of the collecting pipe
Length is greater than 20mm.
9. a kind of accelerant installing structure of silencer according to claim 2, it is characterised in that: the collecting pipe is tapered
Silencing means is equipped in pipe.
10. a kind of silencer, it is characterised in that: include any accelerant installing structure of the claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821950893.6U CN209413973U (en) | 2018-11-23 | 2018-11-23 | A kind of silencer and its accelerant installing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821950893.6U CN209413973U (en) | 2018-11-23 | 2018-11-23 | A kind of silencer and its accelerant installing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209413973U true CN209413973U (en) | 2019-09-20 |
Family
ID=67935225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821950893.6U Expired - Fee Related CN209413973U (en) | 2018-11-23 | 2018-11-23 | A kind of silencer and its accelerant installing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209413973U (en) |
-
2018
- 2018-11-23 CN CN201821950893.6U patent/CN209413973U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190920 |