CN204113495U - Waste gas circulation pipe - Google Patents
Waste gas circulation pipe Download PDFInfo
- Publication number
- CN204113495U CN204113495U CN201320850054.8U CN201320850054U CN204113495U CN 204113495 U CN204113495 U CN 204113495U CN 201320850054 U CN201320850054 U CN 201320850054U CN 204113495 U CN204113495 U CN 204113495U
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- CN
- China
- Prior art keywords
- pipe
- bellows
- bend
- middle pipe
- internal diameter
- 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
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Classifications
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust Silencers (AREA)
Abstract
A kind of waste gas circulation pipe, comprise body, it is characterized in that: described body comprises front pipe, middle pipe, rear pipe, is fixed on front second bellows of managing the first bellows between middle pipe and being fixed between middle pipe and rear pipe, first bellows is consistent with the internal diameter of front pipe, middle pipe and rear pipe with the internal diameter of the second bellows, the external diameter of the first bellows and the second bellows is greater than 0.6 ~ 1cm of the external diameter of front pipe, middle pipe and rear pipe, the ripple number of the first bellows and the second bellows is 7 ~ 10, and length is at 2.0 ~ 3.0cm.Two sections of bellowss are set, utilize the elasticity of bellows effectively to reduce the impact of external force, reduce vibrations and noise; Bellows ripple is closeer, not yielding, consistent with internal diameter of tube body, and body bending angle is reasonable, can ensure that pipeline is unimpeded.The utility model is rational in infrastructure, it is easy to connect to install, and both has rigidity, and meets again certain elasticity, has good damping, reduces noise result, can be used in the gas recirculation system of motor, reduce the discharge of harmful exhaust.
Description
Technical field
The utility model relates to a kind of outlet pipe, especially a kind of waste gas circulation pipe for Motor Vehicle.
Background technique
The noxious emission of motor is the main source causing pollution of atmosphere, along with the significance of environmental protection problem increases increasingly, reduces the important directions that this target of Engine's Harmful Emission becomes development of engine in the world today.In order to reduce the discharge of harmful gas in vehicle travel process, occurred the gas recirculation system for reducing noxious emission at present, the sub-fraction of waste gas diesel engine or petrol engine produced exactly sends cylinder back to again.EGR gas will retarded combustion process owing to having inertia, and that is velocity of combustion will slow down thus cause the pressure initiation process in firing chamber to slow down, main cause that oxynitrides can reduce that Here it is.In addition, improve ER EGR Rate and total exhaust gas flow can be made to reduce, therefore total in toxic emission pollutant output quantity will reduce relatively.In exhaust gas recirculation event, the structure of waste gas circulation pipe is just extremely important, existing outlet pipe is normally made up of steel pipe, in use shake, noise ratio is larger, and due to rigidity large, require higher when being connected with baffler etc., a little a little bending flaw that waits just there will be the problem do not connected.
Summary of the invention
Technical problem to be solved in the utility model be provide for the above-mentioned state of the art a kind of rational in infrastructure, waste gas circulation pipe easy to connect is installed, effectively can alleviate the impact of external force in using process, have shockproof and reduce the effect of noise preferably.
The utility model solves the problems of the technologies described above adopted technological scheme: this waste gas circulation pipe, comprise body, it is characterized in that: described body comprises front pipe, middle pipe, rear pipe, the second bellows being fixed on the first bellows between front pipe and middle pipe and being fixed between middle pipe and rear pipe, the welding edges of front pipe has loose flange, the welding edges of rear pipe has fastening flange, the internal diameter of described first bellows and the second bellows and front pipe, middle pipe is consistent with the internal diameter of rear pipe, the external diameter of the first bellows and the second bellows is greater than front pipe, 0.6 ~ 1cm of the external diameter of middle pipe and rear pipe, the ripple number of the first bellows and the second bellows is 7 ~ 10, length is at 2.0 ~ 3.0cm.
As improvement, described first bellows and the second bellows measure-alike, the ripple number of described first bellows and the second bellows is 8, and length is 2.1cm.
As improvement, before described pipe for middle part be the bend pipes that 100 ~ 120 ° of angles bend, the front portion of front pipe and the linkage section of described loose flange is curved upwards bends.
As improvement, described middle pipe is the bend pipe of middle part bending in 120 ~ 150 ° of angles, and after central pipe and the first bellows-welding, the linkage section of middle pipe and described front pipe is for bend in the same way.
Improve, described rear pipe is straight tube or middle part is the bend pipe that 150 ~ 170 ° of angles bend again.
Improve, on described middle pipe, fixed cover is provided with packing ring, and packing ring is provided with the connection collar again.
Further improvement, described packing ring is by the compressing circular sleeve structure of Stainless Steel Cloth.
Compared with prior art, the utility model has the advantage of: in body, be provided with two sections of bellowss, because bellows has certain elasticity, effectively can reduce the impact of external force, reduce vibrations and noise; The ripple of bellows is closeer in addition, guarantees that overall rigidity is large, not yielding; Bellows is consistent with the internal diameter of body, and the bending angle of body is reasonable, can ensure the unimpeded of gas exhaust piping.The utility model is rational in infrastructure, it is easy to connect to install, and both has integral rigidity, and meets again certain elasticity, there is good damping, reduce the effect of noise, can be used in the gas recirculation system of motor, guarantee the unimpeded of pipeline, reduce the discharge of harmful exhaust.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 and Fig. 3 is the structural representation of Fig. 1 in different amount.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figure 1, 2, 3, the waste gas circulation pipe of the present embodiment, comprise body, described body comprises front pipe 1, middle pipe 2, rear pipe 3, the second bellows 5 of being fixed on the first bellows 4 between front pipe 1 and middle pipe 2 and being fixed between middle pipe 2 and rear pipe 3, front pipe 1, middle pipe 2 and rear pipe 3 are all have the Stainless Steel Tube of same size to make, and the first bellows 4 and the second bellows 5 are corrugated stainless steel tubing; The welding edges of front pipe 1 has loose flange 6, and the welding edges of rear pipe 3 has fastening flange 7; Described first bellows 4 and the second bellows 5 measure-alike, the internal diameter of the two is consistent with the internal diameter of front pipe 1, middle pipe 2 and rear pipe 3, to guarantee the unimpeded of pipeline, the external diameter of the first bellows 4 and the second bellows 5 is greater than 0.6 ~ 1cm of the external diameter of front pipe 1, middle pipe 2 and rear pipe 3, the ripple number of the first bellows 4 and the second bellows 5 is all 8, total length is 2.1cm, body arranges bellows, whole body is made to have certain elasticity, the impact of external force in using process can be alleviated, reduce vibrations; Described front pipe 1 for middle part be the bending bend pipes of 100 ~ 120 ° of angles, the front portion of front the pipe 1 and linkage section of described loose flange 6 is curved upwards bends, described middle pipe 2 for middle part be the bend pipe of 120 ~ 150 ° of angles bending, after central pipe 2 welds with the first bellows 4, the linkage section of middle pipe 2 and described front pipe 1 for bend in the same way, described rear pipe 3 for middle part be the bend pipe that 150 ~ 170 ° of angles bend; In addition, on described middle pipe 2, fixed cover is provided with packing ring 8, and packing ring 8 is by the compressing circular sleeve structure of Stainless Steel Cloth, and sound construction is not yielding, packing ring 8 is provided with and connects the collar 9, connects the collar 9 and is provided with attachment hole and can be used for connection and fix.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (1)
1. a waste gas circulation pipe, comprise body, it is characterized in that: described body comprises front pipe (1), middle pipe (2), rear pipe (3), the second bellows (5) being fixed on the first bellows (4) between front pipe (1) and middle pipe (2) and being fixed between middle pipe (2) and rear pipe (3), the welding edges of front pipe (1) has loose flange (6), the welding edges of rear pipe (3) has fastening flange (7), the internal diameter of described first bellows (4) and the second bellows (5) and front pipe (1), middle pipe (2) is consistent with the internal diameter of rear pipe (3), the external diameter of the first bellows (4) and the second bellows (5) is greater than front pipe (1), 0.6 ~ 1cm of the external diameter of middle pipe (2) and rear pipe (3), the ripple number of the first bellows (4) and the second bellows (5) is 7 ~ 10, length is at 2.0 ~ 3.0cm, the upper fixed cover of described middle pipe (2) is provided with packing ring (8), packing ring (8) is provided with and connects the collar (9), described packing ring (8) is by the compressing circular sleeve structure of Stainless Steel Cloth, described first bellows (4) and the second bellows (5) measure-alike, the ripple number of described first bellows (4) and the second bellows (5) is 8, and length is 2.1cm, before described pipe (1) for middle part be the bend pipes that 100 ~ 120 ° of angles bend, the front portion of front pipe (1) and the linkage section of described loose flange (6) is curved upwards bends, described middle pipe (2) for middle part be the bend pipe of 120 ~ 150 ° of angles bending, in the middle of pipe after (2) weld with the first bellows (4), middle pipe (2) and describedly frontly manage the linkage section of (1) for bend in the same way, described rear pipe (3) for straight tube or middle part be the bend pipe of 150 ~ 170 ° of angles bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850054.8U CN204113495U (en) | 2013-12-13 | 2013-12-13 | Waste gas circulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850054.8U CN204113495U (en) | 2013-12-13 | 2013-12-13 | Waste gas circulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113495U true CN204113495U (en) | 2015-01-21 |
Family
ID=52330812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850054.8U Expired - Fee Related CN204113495U (en) | 2013-12-13 | 2013-12-13 | Waste gas circulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113495U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089864A (en) * | 2015-09-18 | 2015-11-25 | 安徽江淮汽车股份有限公司 | Built-in type oil-gas separating device |
| CN110206626A (en) * | 2019-06-26 | 2019-09-06 | 东风汽车股份有限公司 | Self sealss structure and flange adjustable engine exhaust pipe |
-
2013
- 2013-12-13 CN CN201320850054.8U patent/CN204113495U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089864A (en) * | 2015-09-18 | 2015-11-25 | 安徽江淮汽车股份有限公司 | Built-in type oil-gas separating device |
| CN110206626A (en) * | 2019-06-26 | 2019-09-06 | 东风汽车股份有限公司 | Self sealss structure and flange adjustable engine exhaust pipe |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20181213 |