CN202937335U - Pipe bending device integrated with urea nozzle holder - Google Patents
Pipe bending device integrated with urea nozzle holder Download PDFInfo
- Publication number
- CN202937335U CN202937335U CN 201220601782 CN201220601782U CN202937335U CN 202937335 U CN202937335 U CN 202937335U CN 201220601782 CN201220601782 CN 201220601782 CN 201220601782 U CN201220601782 U CN 201220601782U CN 202937335 U CN202937335 U CN 202937335U
- Authority
- CN
- China
- Prior art keywords
- urea
- urea nozzle
- bending device
- nozzle seat
- nozzle holder
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a pipe bending device integrated with a urea nozzle holder. The pipe bending device is characterized in that the urea nozzle holder is integrated on an elbow pipe of an exhaust pipeline; the urea nozzle holder is arranged on the elbow pipe section of the exhaust pipeline and connected with the exhaust pipeline in a welding manner. Therefore, the risk of generating urea crystal due to the fact that the position of the urea nozzle holder does not accord with the requirements of a urea injection system is avoided; and the pipe bending device is reasonable in structure and convenient to use.
Description
Technical field
The utility model relates to a kind of bending device of integrated urea nozzle seat, belongs to parts in gas exhaust piping.
Background technique
The Abgasgesetz of state's IV, state's V is about to implement, and as a kind of technology path that can satisfy Abgasgesetz, selective catalysis reduction (SCR) after-treatment system is adopted by domestic automaker.This system be the ammonia that produces with aqueous solution of urea hydrolysis as reducing agent, utilize the catalysis of SCR catalyzer to reduce oxynitrides in exhaust, to satisfy relevant laws and regulations requirement.If yet the reason such as pipeline inner wall is rough, the urea nozzle position is undesirable causes this system the phenomenon of urea crystals to occur.The backpressure rising of vent systems can be caused after urea crystals, engine performance can be had a strong impact on; In addition, due to the generation of urea crystals, also can cause the growing amount of reducing agent ammonia inadequate, motor nitrogen oxygen be discharged pollutants exceed standard.
How to reduce the risk of urea crystals, after will being the Abgasgesetz enforcement of state's IV, state's V, the very severe problem that each automaker will face.
Summary of the invention
The purpose of this utility model is to provide a kind of bending device of integrated urea nozzle seat, and its requirement of having avoided position due to the urea nozzle seat not meet the urea-spray system produces the risk of urea crystals, and is rational in infrastructure, easy to use.
Technical problem of the present utility model is solved by the following technical programs: the bending device of integrated urea nozzle seat, it is characterized in that: the urea nozzle seat is integrated on the bend pipe of gas exhaust piping, the urea nozzle seat is arranged in the bend loss of gas exhaust piping, is connected with gas exhaust piping by welding.
Good effect of the present utility model is to adopt the mode of casting that urea nozzle seat and bend pipe are integrated, when welding forms assembly, only need to guarantee that the axis of this device back segment straight tube and the axis of gas exhaust piping back segment straight tube get final product it, all the other size requirements guarantee by the element precision of this device own, the mode that this device adopts the rear machine of casting to add is made, and manufacturing efficiency is high; The welding of this device and gas exhaust piping need not any adjustment, need not to remove inner welding slag, technique is simple, can guarantee that the position of urea nozzle seat meets the requirement of urea-spray system fully, greatly reduce the risk of urea crystals, have the very strong market competitiveness.
Description of drawings
Fig. 1 is structural drawing of the present utility model.
Fig. 2 is sectional structure chart of the present utility model.
Fig. 3 is the structural representation of traditional urea nozzle seat.
Fig. 4 is the reason schematic diagram that traditional urea nozzle seat produces urea crystals.
Fig. 5 is the schematic diagram of elbow pipe welding different amount gas exhaust piping of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing: as shown in Figure 1, 2, the bending device of integrated urea nozzle seat, it is characterized in that: urea nozzle seat 1 is integrated on the bend pipe 2 of gas exhaust piping 3, urea nozzle seat 1 is arranged in 2 sections of the bend pipes of gas exhaust piping 3, and bend pipe 2 is connected with gas exhaust piping 3 by welding.
In vent systems, urea nozzle seat 1 is arranged in 2 sections of the bend pipes of gas exhaust piping 3, is connected with gas exhaust piping 3 by welding.According to the requirement of this urea-spray system, angle A, size L as shown in Figure 3 need to be satisfied in the position of urea nozzle seat, and the axis of nozzle bore 4 also need pass through reference point RP.And reference point RP is the real contour line in the bend pipe 2 places outsides of gas exhaust piping 3 and the intersection point of back segment pipeline axis.For cold-bent pipe, owing to adopting variation of creating conditions such as differently curved angle, different angle pipe equipments, cause the circularity at bend pipe 2 places also to have difference, as shown in Figure 3, can cause real contour line change in location outside bend pipe 2 places, reference point RP becomes RP ' thereupon.Because the basis of reference that welds changes, cause Clamp for welding to be difficult to design.Can only adjust Clamp for welding according to the practical condition of each MANUFACTURER, make it satisfy the bend pipe of various different amount bend pipes and distinct device clod wash.
As shown in Figure 4, tradition urea nozzle seat 1 is arranged on bend pipe 2 places of gas exhaust piping 3 at a certain angle, if the diameter in the hole at bend pipe 2 places of gas exhaust piping 3 is less than the bore dia of urea nozzle seat 1, or both axis disalignments, can cause the step of reduced cross-sectional, thereby cause aqueous solution of urea be ejected into gas exhaust piping 3 interior after, form urea crystals at the step place; Be difficult to clear up at the welding slag of urea nozzle seat 1 with bend pipe 2 welds, also can form urea crystals 5 at the welding slag place, cause urea crystals; If deviation appears in angle A in addition, aqueous solution of urea is ejected in outlet pipe, and after atomizing, unhydrolysed drop can be directly injected on tube wall, also can produce a large amount of urea crystals 5.
In sum, there are a lot of problems in the welding manner of traditional urea nozzle seat, as: the size of need controlling is more, and easy to clean welding slag etc. not after manufacturing difficulty, welding causes larger urea crystals risk.
The bending device of integrated urea nozzle seat of the present utility model, that urea nozzle seat and bend pipe are integrated by the mode of casting, the profile of this device and sectional drawing are as shown in Figure 2, gas exhaust piping 3 has been divided into 3 sections, bend pipe 2 in the middle of gas exhaust piping 3 adopts the mode of welding to be connected with gas exhaust piping 3 front and back sections, only need guarantee coaxial the getting final product of axis with bend pipe 2 back segments of integrated urea nozzle seat 1 of back segment.
As shown in Figure 5, the bend pipe 2 of integrated urea nozzle seat 1 of the present utility model by welding the direction of different leading portion cold-bent pipe change gas exhaust piping 3 leading portions, can satisfy all arrangements to the requirement of gas exhaust piping trend.
Claims (1)
1. the bending device of integrated urea nozzle seat, it is characterized in that: the urea nozzle seat is integrated on the bend pipe of gas exhaust piping, and the urea nozzle seat is arranged in the bend loss of gas exhaust piping, is connected with gas exhaust piping by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601782 CN202937335U (en) | 2012-11-15 | 2012-11-15 | Pipe bending device integrated with urea nozzle holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601782 CN202937335U (en) | 2012-11-15 | 2012-11-15 | Pipe bending device integrated with urea nozzle holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937335U true CN202937335U (en) | 2013-05-15 |
Family
ID=48321579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220601782 Expired - Lifetime CN202937335U (en) | 2012-11-15 | 2012-11-15 | Pipe bending device integrated with urea nozzle holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525972A (en) * | 2014-10-17 | 2016-04-27 | 现代自动车株式会社 | Exhaust pipe for turbo engine |
| CN109681300A (en) * | 2019-02-28 | 2019-04-26 | 一汽解放汽车有限公司 | A kind of preposition baffle mixing arrangement preventing urea crystals |
-
2012
- 2012-11-15 CN CN 201220601782 patent/CN202937335U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525972A (en) * | 2014-10-17 | 2016-04-27 | 现代自动车株式会社 | Exhaust pipe for turbo engine |
| CN109681300A (en) * | 2019-02-28 | 2019-04-26 | 一汽解放汽车有限公司 | A kind of preposition baffle mixing arrangement preventing urea crystals |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201470307U (en) | Turbulent flow mixer for tail gas of engine | |
| WO2011043993A3 (en) | Reductant nozzle indentation mount | |
| JP2008151088A (en) | Exhaust emission control device | |
| CN204646380U (en) | Two-layer hybrid pipe and exhaust gas treatment device thereof | |
| CN204457943U (en) | Scr catalytic muffler | |
| CN202937335U (en) | Pipe bending device integrated with urea nozzle holder | |
| CN204646381U (en) | Two-layer hybrid pipe and exhaust gas treatment device thereof | |
| CN103711552B (en) | Box SCR catalytic muffler and air inlet device thereof | |
| CN204026027U (en) | A kind of plug-in type Reed bore muffler | |
| CN109707491A (en) | The mixer of spraying system | |
| CN203928503U (en) | A kind of evaporation structure that reduces Refrigerant noise | |
| CN204152617U (en) | A kind of close coupling gas exhaust manifold and catalytic converter assembly | |
| CN207229213U (en) | Diesel engine after treatment device | |
| CN207212452U (en) | Diesel engine after treatment device | |
| CN204357539U (en) | Gas auxiliary internal-combustion engine SCR is with the shower nozzle of atomizing effect | |
| JP2011032971A (en) | Exhaust emission control device of engine | |
| CN207212451U (en) | Diesel engine after treatment device | |
| CN204984553U (en) | Diesel engine after treatment system blender assembly | |
| CN204941677U (en) | A kind of biased close coupling casting gas exhaust manifold and catalytic converter assembly | |
| CN204113495U (en) | Waste gas circulation pipe | |
| JP5738155B2 (en) | Engine reducing agent injection nozzle | |
| CN206329370U (en) | A kind of urea injector of axially injection | |
| CN202811020U (en) | Urea jetting device of high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for ship | |
| CN205117459U (en) | Diesel vehicle is ammonia generating device for filter | |
| CN206299435U (en) | Corn picker diesel exhaust gas pipeline improved structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |