CN205744072U - 1115 series single cylinder diesel tail-gas purifying silencers - Google Patents
1115 series single cylinder diesel tail-gas purifying silencers Download PDFInfo
- Publication number
- CN205744072U CN205744072U CN201620422827.6U CN201620422827U CN205744072U CN 205744072 U CN205744072 U CN 205744072U CN 201620422827 U CN201620422827 U CN 201620422827U CN 205744072 U CN205744072 U CN 205744072U
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- China
- Prior art keywords
- perforated clapboard
- chamber
- single cylinder
- air
- escape pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a kind of 1115 series single cylinder diesel tail-gas purifying silencers, including shell, air inlet and gas outlet is had respectively on shell, enclosure is sequentially provided with air-flow Perforated clapboard, Perforated clapboard of giving vent to anger by the direction of air inlet to gas outlet, form 3 chambers, be followed successively by the first chamber, the second chamber and the 3rd chamber；It is all provided with porose above air-flow Perforated clapboard and Perforated clapboard of giving vent to anger；Being provided with two pieces of location-plates in second chamber, location-plate is annular, and the outward flange of annulus is fixed with outer casing inner wall；Being provided with the oxidation catalyst carrier of tubbiness metal-back parcel between two pieces of location-plates, tubbiness metal-back is fixing with the inward flange of annulus to be welded, and tubbiness metal-back is respectively equipped with air inlet and gas outlet；Being provided with perforation escape pipe in 3rd chamber, the tube wall of perforation escape pipe is provided with hole；The perforation bottom end seal of escape pipe and snapped in by detent give vent to anger on Perforated clapboard, top connects with the gas outlet of described shell.This utility model can substantially reduce diesel emission noise.
Description
Technical field
This utility model relates to a kind of 1115 series single cylinder diesel tail-gas purifying silencers.It is urged with oxidation for acoustic filter
Change converter and be blended in the device of one, belong to acoustic filter field.
Background technology
China be single cylinder diesel in the world production and use big country, year volume of production and marketing account for more than the 75% of world's total amount, domestic
Supporting society adds up recoverable amount and about reaches forty-two million platform, and within 2014, volume of production and marketing reaches 5,500,000.Along with socioeconomic continuous
Exhibition, day by day appearing suddenly of problem of environmental pollution, the energy-conservation focus becoming internal combustion engine industry with reduction of discharging the most therewith.
China has promulgated non-rice habitats diesel engine state three discharge standard on May 16th, 2014, in, high-power non-rice habitats diesel oil
Machine is easier to reach this laws and regulations requirement by Vehicle Emission Control technology, but to the small-power non-rice habitats diesel engine of power≤37kW and
Say that this standard becomes one of the tightest regulation in the whole world.Meanwhile, internal combustion engine noise is also important polluter, and noise objective needs
Meet state compulsory standard, and noise level limit also has and adds tight requirement.Single-cylinder diesel engine silencer be mostly by expansion chamber,
Interpolation pipe, perforated plate, resonant cavity and expansion pipe etc. form, and the acoustic filter of pure meaning is during the use of single cylinder diesel
Having only served noise elimination effect, only the Single Cylinder Diesel Engine Emission by optimizing in machine is extremely difficult to the requirement of new standard.Therefore,
Design a kind of acoustic filter and be blended in tail-gas purifying silencer integrally with oxidation catalytic converter, can be with Appropriate application one-cylinder diesel
Machine space structure, and effectively control Single Cylinder Diesel Engine Emission and noise.
Summary of the invention
The purifying muffler that existing single cylinder diesel is used is by the simple noise elimination original paper removed within former acoustic filter mostly,
Then oxidation catalyst carrier is installed on therein.This purifying muffler air-flow passes through skewness during catalytic carrier,
Carrier center flow velocity is high, and periphery flow velocity is low, therefore soundproof effect, tail gas catalyzed transformation efficiency and the service life of catalyst
The most poor.
A kind of single cylinder diesel tail-gas purifying silencer that the present invention relates to is used by 1115 series single cylinder diesels, with 1115
Diesel engine former machine acoustic filter is foundation, uses the method for designing that numerical simulation combines, design optimization purifying muffler with test
Internal structure, makes oxidation catalyst carrier internal gas flow by arranging the Optimum distribution of perforation on air-flow Perforated clapboard and dividing plate
More uniform, improve transformation efficiency and the service life of oxidation catalyst；Optimize simultaneously and devise the internal noise elimination of purifying muffler
Structure so that each noise elimination original paper after optimization and the effective synergistic combination of oxidation catalyst carrier form one and reduce the row of electromotor
Gas noise.Technical scheme is as follows:
1115 series single cylinder diesel purifying mufflers, including shell, described shell one end is provided with air inlet, the other end sets
Having gas outlet, described enclosure is sequentially provided with air-flow Perforated clapboard, Perforated clapboard of giving vent to anger by the direction of air inlet to gas outlet,
Forming 3 chambers, described 3 chambers are followed successively by the first chamber, the second chamber and the 3rd chamber；Described air-flow Perforated clapboard
Be all provided with above described Perforated clapboard of giving vent to anger porose；
Be provided with two pieces of location-plates in described second chamber, described location-plate be annular and annulus outward flange with described outside
Shell inwall is fixed；Be provided with between two pieces of location-plates tubbiness metal-back parcel oxidation catalyst carrier, described tubbiness metal-back with
The fixing welding of the inward flange of described annulus, described tubbiness metal-back is respectively equipped with air inlet and gas outlet；
Being provided with perforation escape pipe in described 3rd chamber, the tube wall of described perforation escape pipe is provided with hole；Described perforation escape pipe
Bottom end seal；The bottom of described perforation escape pipe by detent snap in described in give vent to anger on Perforated clapboard, top is with described
The gas outlet connection of shell.
Further, one layer of asbestos heat-insulation layer is wrapped up outside the oxidation catalyst carrier of described tubbiness metal-back parcel.
Further, the distance between top one round and the top edge of described perforation escape pipe of described perforation escape pipe is the least
In 11mm；Distance between described location-plate and described air-flow Perforated clapboard is 8mm；Described tubbiness metal-back bottom and institute
Stating the distance optimum between air-flow Perforated clapboard 3 is 22mm.
Further, the gross area in the hole on described air-flow Perforated clapboard is set to more than 1.5 times of housing inlet area.
Further, the hole on described air-flow Perforated clapboard is evenly distributed on several concentric circulars and the center of circle, on each circle
The number in hole is increased by inner ring to outer ring according to the multiple of 6；The diameter of outermost circle is more bigger than the diameter of described tubbiness metal-back.
Further, described concentrically ringed number is 7, described 7 concentrically ringed diameters be followed successively by from inside to outside 24mm,
44mm、60mm、76mm、92mm、108mm、124mm。
Further, the diameter of described air-flow Perforated clapboard is set to 168mm.
Further, the gross area in the hole on Perforated clapboard of giving vent to anger described in is set to more than 1.5 times of housing inlet area；Institute
State the gross area in hole on perforation escape pipe and be set to more than 1.5 times of housing inlet area.
Further, described first chamber is the first expansion chamber, shape between described air-flow Perforated clapboard and described tubbiness metal-back
Become the first pressure stabilizing cavity, described tubbiness metal-back and described giving vent to anger between Perforated clapboard, to form the second expansion chamber, described in give vent to anger perforation
The second pressure stabilizing cavity is formed between dividing plate and described perforation escape pipe and described outer casing inner wall.
Further, described shell is divided into upper casing and lower casing, seals and be welded and fixed between upper casing and lower casing.
The invention have the benefit that
1, purifying muffler of the present utility model is tested on 1115 series single cylinder diesels and is shown, Diesel Engine Complete Machine noise is low
In the total noise of centrifuge with the common acoustic filter of former machine, the complete machine discharge of diesel engine has reached row of national non-rice habitats diesel engine phase III
Put the requirement of standard.
2 and traditional only oxidation catalyst carrier being arranged in acoustic filter, the purification silencing of airless Perforated clapboard structure
Device is compared, and the conversion ratio of CO, HC, PM discharge improves 15～28%；Only oxidation catalyst carrier is pacified with traditional
Being contained in acoustic filter, the purifying muffler of the structure of Perforated clapboard of giving vent to anger is compared, and diesel engine noise substantially reduces.
3, disel-oil engine purifying silencer of the present invention can meet 1115 series single cylinder diesels supporting of discharge capacity 1.09～1.36 liters
Use requirement.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is air-flow Perforated clapboard structure chart.
Fig. 3 is Perforated clapboard structure chart of giving vent to anger.
Fig. 4 is perforation outlet duct structures figure.
Description of reference numerals: 1-air inlet, 2-the first expansion chamber, 3-air-flow Perforated clapboard, 4-location-plate, 5-the first pressure stabilizing cavity,
6-oxidation catalyst carrier, 7-asbestos heat-insulation layer, 8-the second expansion chamber, 9-give vent to anger Perforated clapboard, 10-the second pressure stabilizing cavity, 11-
Perforation escape pipe, 12-lower casing, 13-upper casing, 14-gas outlet, the peripheral perforation of 15-air-flow Perforated clapboard, 16-detent.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the purifying muffler that the present invention proposes includes that shell, described shell one end set
Having air inlet, the other end to be provided with gas outlet, described enclosure is sequentially provided with air-flow perforation by the direction of air inlet to gas outlet
Dividing plate 3, Perforated clapboard 9 of giving vent to anger, make enclosure form 3 chambers, described 3 chambers be followed successively by the first chamber, the
Two chambers and the 3rd chamber；It is all provided with porose above described air-flow Perforated clapboard 3 and described Perforated clapboard 9 of giving vent to anger；
Being provided with two pieces of location-plates 4 in described second chamber, described location-plate 4 is annular and the outward flange of annulus and institute
State outer casing inner wall to fix；The oxidation catalyst carrier 6 of tubbiness metal-back parcel, described tubbiness gold it is provided with between two pieces of location-plates
Genus shell is fixing with the inward flange of described annulus to be welded, and described tubbiness metal-back is respectively equipped with air inlet and gas outlet；
Being provided with perforation escape pipe 11 in described 3rd chamber, the tube wall of described perforation escape pipe 11 is provided with hole；Described perforation
The bottom end seal of escape pipe 11；The bottom of described perforation escape pipe 11 by detent 16 snap in described in give vent to anger Perforated clapboard
On 9, it is simple to installation during assembling, top connects with the gas outlet 14 of described shell.
Further, one layer of asbestos heat-insulation layer 7 is wrapped up outside the oxidation catalyst carrier 6 of described tubbiness metal-back parcel, it is ensured that
Diesel engine catalyst when low speed, Smaller load has enough temperature ignitions, thus widens the working range of catalyst.
Further, between a round and the top edge of described perforation escape pipe 11 on the top of described perforation escape pipe 11 away from
From not less than 11mm；Distance optimum between described location-plate 4 and described air-flow Perforated clapboard 3 is 8mm；Described tubbiness
Distance optimum between metal-back bottom and described air-flow Perforated clapboard 3 is 22mm.
Further, the gross area in the hole on described air-flow Perforated clapboard 3 is set to more than 1.5 times of housing inlet 1 area.
Further, as in figure 2 it is shown, the hole on air-flow Perforated clapboard 3 by dividing plate center to external radiation, the most uniformly
Distribution, interior thin outer close, the concrete regularity of distribution is: the hole on described air-flow Perforated clapboard 3 is evenly distributed on several concentric circulars
With on the center of circle, on each circle, the number in hole is increased by inner ring to outer ring according to the multiple of 6, one sky of circle centre position, first
Circle is provided with 6 holes, and second circle is provided with 12 ..., the like；Air-flow Perforated clapboard uses such
Perforation distributions advantageously reduces flow resistance, and interior thin outer close perforation distributions improves and flows in oxidation catalyst carrier (6)
The uniformity of air-flow.
The edge of the peripheral perforation 15 of air-flow Perforated clapboard is slightly larger than oxidation catalyst carrier 6 edge, and i.e. outermost circle is straight
Footpath is more bigger than the diameter of described tubbiness metal-back, is conducive to increasing the circulating area flowing through oxidation catalyst carrier air-flow.
Further, described concentrically ringed number is 7, described 7 concentrically ringed diameters be followed successively by from inside to outside 24mm,
44mm、60mm、76mm、92mm、108mm、124mm。
Further, the diameter of described air-flow Perforated clapboard 3 is set to 168mm.
Further, the gross area in the hole on Perforated clapboard 9 of giving vent to anger described in is set to more than 1.5 times of housing inlet area；Institute
State the gross area in hole on perforation escape pipe 11 and be set to more than 1.5 times of housing inlet area.Ensure that and reaching noise elimination purpose
While reduce the flow resistance of purifying muffler.
Further, described first chamber is the first expansion chamber, is formed between described air-flow Perforated clapboard and described tubbiness metal-back
First pressure stabilizing cavity, described tubbiness metal-back and described giving vent to anger form the second expansion chamber between Perforated clapboard, described in give vent to anger perforation every
The second pressure stabilizing cavity is formed between plate and described perforation escape pipe and described outer casing inner wall.
Further, described shell is divided into upper casing 13 and lower casing 12, seals and be welded and fixed between upper casing and lower casing.
Operation principle and the process of purifying muffler of the present invention are as follows:
The waste gas that diesel engine is discharged is entered inside purifying muffler by air inlet 1, the first expansion chamber 2 eliminate the noise first；
Carry out second time through air-flow Perforated clapboard 3 eliminate the noise and to rectified action will be played by the air-flow of oxidation catalyst 6, make
Air-flow more flows evenly through oxidation catalyst carrier 6；Air-flow is entered the second expansion chamber the most afterwards by oxidation catalyst carrier 6
8, and again eliminated the noise by Perforated clapboard 9 of giving vent to anger, after by the second pressure stabilizing cavity 10 perforated escape pipe 11 and gas outlet 14 row
Go out acoustic filter.
The a series of detailed description of those listed above is only for illustrating of the feasibility embodiment of the present invention, it
And be not used to limit the scope of the invention, all without departing from the skill of the present invention equivalent implementations made of spirit or change
Should be included within the scope of the present invention.
Claims (10)
1.1115 series single cylinder diesel tail-gas purifying silencer, including shell, described shell one end is provided with air inlet (1), the other end is provided with gas outlet (14), it is characterized in that, described enclosure is sequentially provided with air-flow Perforated clapboard (3), Perforated clapboard of giving vent to anger (9) by the direction of air inlet (1) to gas outlet (14), forming 3 chambers, described 3 chambers are followed successively by the first chamber, the second chamber and the 3rd chamber；It is all provided with porose above described air-flow Perforated clapboard (3) and described Perforated clapboard of giving vent to anger (9)；
Being provided with two pieces of location-plates (4) in described second chamber, described location-plate (4) is that the outward flange of annular and annulus is fixed with described outer casing inner wall；Being provided with the oxidation catalyst carrier (6) of tubbiness metal-back parcel between two pieces of location-plates, described tubbiness metal-back is fixing with the inward flange of described annulus to be welded, and described tubbiness metal-back is respectively equipped with air inlet and gas outlet；
Being provided with perforation escape pipe (11) in described 3rd chamber, the tube wall of described perforation escape pipe (11) is provided with hole；The bottom end seal of described perforation escape pipe (11)；The bottom of described perforation escape pipe (11) by detent (16) snap in described in give vent to anger that Perforated clapboard (9) is upper, top connects with the gas outlet (14) of described shell.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 1, it is characterised in that oxidation catalyst carrier (6) outside one layer of asbestos heat-insulation layer (7) of parcel of described tubbiness metal-back parcel.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 1, it is characterized in that, the distance between top one round and the top edge of described perforation escape pipe (11) of described perforation escape pipe (11) is not less than 11mm；Distance between described location-plate (4) and described air-flow Perforated clapboard (3) is 8mm；Distance between described tubbiness metal-back bottom and described air-flow Perforated clapboard (3) is 22mm.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 1, it is characterised in that the gross area in the hole on described air-flow Perforated clapboard (3) is set to more than 1.5 times of housing inlet (1) area.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 4, it is characterized in that, hole on described air-flow Perforated clapboard (3) is evenly distributed on several concentric circulars and the center of circle, and on each circle, the number in hole is increased by inner ring to outer ring according to the multiple of 6；The diameter of outermost circle is more bigger than the diameter of described tubbiness metal-back.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 5, it is characterized in that, described concentrically ringed number is 7, and described 7 concentrically ringed diameters are followed successively by 24mm, 44mm, 60mm, 76mm, 92mm, 108mm, 124mm from inside to outside.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 6, it is characterised in that the diameter of described air-flow Perforated clapboard (3) is set to 168mm.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 1, it is characterised in that described in the give vent to anger gross area in the hole on Perforated clapboard (9) be set to more than 1.5 times of housing inlet (1) area；The gross area in the upper hole of described perforation escape pipe (11) is set to more than 1.5 times of housing inlet (1) area.
1115 series single cylinder diesel tail-gas purifying silencers the most according to claim 1, it is characterized in that, described first chamber is the first expansion chamber (2), the first pressure stabilizing cavity (5) is formed between described air-flow Perforated clapboard (3) and described tubbiness metal-back, form the second expansion chamber (8) between described tubbiness metal-back and described Perforated clapboard of giving vent to anger (9), described in give vent to anger and between Perforated clapboard (9) and described perforation escape pipe (11) and described outer casing inner wall, form the second pressure stabilizing cavity (10).
10. according to 1115 series single cylinder diesel tail-gas purifying silencers described in claim 1-9 any one, it is characterized in that, described shell is divided into upper casing (13) and lower casing (12), seals, is welded and fixed between upper casing (13) and lower casing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620422827.6U CN205744072U (en) | 2016-05-11 | 2016-05-11 | 1115 series single cylinder diesel tail-gas purifying silencers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620422827.6U CN205744072U (en) | 2016-05-11 | 2016-05-11 | 1115 series single cylinder diesel tail-gas purifying silencers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744072U true CN205744072U (en) | 2016-11-30 |
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ID=57367841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620422827.6U Expired - Fee Related CN205744072U (en) | 2016-05-11 | 2016-05-11 | 1115 series single cylinder diesel tail-gas purifying silencers |
Country Status (1)
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|---|---|
| CN (1) | CN205744072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822395A (en) * | 2016-05-11 | 2016-08-03 | 江苏大学 | Tail gas purification muffler applied to 1115 series of single-cylinder diesel engines |
-
2016
- 2016-05-11 CN CN201620422827.6U patent/CN205744072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822395A (en) * | 2016-05-11 | 2016-08-03 | 江苏大学 | Tail gas purification muffler applied to 1115 series of single-cylinder diesel engines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20210511 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |