CN216894591U - Urea nozzle flange seat for diesel engine SCR tail gas aftertreatment - Google Patents
Urea nozzle flange seat for diesel engine SCR tail gas aftertreatment Download PDFInfo
- Publication number
- CN216894591U CN216894591U CN202122837692.3U CN202122837692U CN216894591U CN 216894591 U CN216894591 U CN 216894591U CN 202122837692 U CN202122837692 U CN 202122837692U CN 216894591 U CN216894591 U CN 216894591U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- cooling
- urea
- cooling water
- diesel engine
- 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.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a urea nozzle flange seat for diesel engine SCR tail gas aftertreatment, which comprises a mounting disc and a cooling water shell, wherein a nozzle jack is arranged at the center of the upper surface of the mounting disc, a nozzle cooling cavity is arranged at the center of the lower bottom surface of the mounting disc around the nozzle jack, the cooling water shell is arranged at the edge of the upper surface of the mounting disc, the bottom of the cooling water shell is communicated with the nozzle cooling cavity, and the cooling water shell can introduce cooling liquid into the nozzle cooling cavity to cool a urea nozzle which passes through the nozzle cooling cavity; the urea nozzle flange seat can seal and fix a urea nozzle, and meanwhile, can introduce engine cooling liquid to circularly flow around the outer side of the urea nozzle, and has a good cooling effect on the urea nozzle.
Description
Technical Field
The utility model belongs to the technical field of diesel engine tail gas purification, and particularly relates to a urea nozzle flange seat for diesel engine SCR tail gas aftertreatment.
Background
The urea injection technology (SCR) is one of the widely used diesel engine emission control technologies at present, also can be called selective catalytic reduction technology, and mainly reduces nitrogen oxide emission in diesel engine emission, and the catalytic reducing agent of the system is urea or various amine substances. The reaction principle is as follows: the urea is hydrolyzed to ammonia at high temperature, and catalytically reduced to nitrogen gas and water together with nitrogen oxides (harmful emissions) in the exhaust gas on a carrier coated with a catalyst in a reduction reaction tank. Therefore, the emission of nitrogen oxides in the tail gas of the diesel engine is reduced by spraying a quantitative urea aqueous solution into the exhaust pipe and based on the reduction reaction of hydrolyzing NH3 by the urea aqueous solution, so that the aim of reducing the emission of harmful gases is fulfilled.
The urea injection unit is arranged in the exhaust pipe, the urea nozzle is responsible for intermittently injecting urea solution into the exhaust pipe, and the exhaust pipe is cooled at any time in the working process due to higher temperature in the exhaust pipe.
Disclosure of Invention
Aiming at the problems and the technical requirements, the utility model provides a urea nozzle flange seat for diesel engine SCR tail gas aftertreatment, which can seal and fix a urea nozzle and has a good cooling effect on the urea nozzle.
The technical scheme of the utility model is as follows: urea nozzle flange seat of diesel engine SCR tail gas aftertreatment, including mounting disc and cooling water casing, mounting disc upper surface center department is equipped with the nozzle jack, and bottom surface center department is equipped with nozzle cooling chamber around the nozzle jack under the mounting disc, the edge at the mounting disc upper surface is set up to the cooling water casing, and cooling water casing bottom and nozzle cooling chamber intercommunication, cooling water casing can be with during the cooling liquid introduces nozzle cooling chamber, cool off the urea nozzle that passes nozzle cooling chamber. The urea nozzle is connected into the nozzle jack on the flange seat, the urea nozzle is aligned to the interior of the exhaust pipe and is sprayed against the direction of air flow, the urea nozzle and nitrogen oxides in exhaust gas are subjected to catalytic reaction, the air temperature of the exhaust pipe is very high, and the cooling water shell is connected into engine cooling liquid to cool the nozzle, so that the cooling effect is good.
Furthermore, two hydraulic interfaces, namely a cooling liquid inlet and a cooling backflow port, are arranged in the cooling water shell, the cooling liquid inlet and the cooling backflow port penetrate through the cooling water shell to be provided with two downward flow channels, and the lower end ports of the flow channels are communicated with the nozzle cooling cavity. The middle section of the urea nozzle penetrates through the nozzle cooling cavity, the nozzle cooling cavity is sealed from the lower part in the assembling process, so that the cavity is in a sealed state, engine cooling liquid flows in from the cooling liquid inlet, rushes into the cavity from the lower port of the flow channel, flows around the outer surface of the urea nozzle for a circle, and then flows back from the lower port of the flow channel of the cooling backflow port.
Furthermore, the cooling water shell is inclined at a certain angle and fixedly connected with the mounting disc, and two flow channels corresponding to the cooling liquid inlet and the cooling backflow port are consistent with the inclination angle of the cooling water shell.
Furthermore, the inclination angle between the cooling water shell and the mounting disc ranges from 100 degrees to 160 degrees. The cooling water shell is obliquely arranged, so that certain impact force is exerted when the inside inclined flow channel flows into the cooling liquid, the liquid flow can flow around the urea nozzle under the action of inertia, the flow speed is high, and the cooling effect is better.
Furthermore, a connecting plate is fixedly arranged between the cooling liquid inlet and the cooling reflux port, and the lower end of the connecting plate is connected with the upper surface of the mounting disc.
Furthermore, the mounting disc upper surface is equipped with convex urea coupling location platform around the nozzle jack, and urea coupling location bench symmetry is equipped with two threaded connection holes. The urea pipe joint is connected with the positioning table to seal the urea nozzle in the nozzle jack.
Furthermore, the mounting disc is of a triangular structure, and mounting holes are formed in three corners of the mounting disc respectively. The mounting hole is used for being connected the mounting disc fixed connection to the blast pipe on, and triangle-shaped structural connection stability is better.
Further, the mounting plate and the cooling water shell are integrally formed.
Compared with the prior art, the utility model has the beneficial effects that: the urea nozzle flange seat is arranged on the exhaust pipe of the diesel engine, urea is sprayed into the exhaust pipe to achieve the effect of purifying tail gas, the mounting disc is fixedly connected with the flange on the outer side of the exhaust pipe, the triangular structure has a more stable fixing effect on the urea nozzle, the cooling water shell is communicated with the nozzle cooling cavity through the two flow channels, so that engine cooling liquid can circularly flow in the nozzle cooling cavity and cool the urea nozzle penetrating through the nozzle cooling cavity, the urea nozzle can continuously work against the exhaust pipe in a high-temperature state, and the tail gas catalysis continuity is better.
Drawings
FIG. 1 is a perspective view of a urea nozzle flange seat according to the present invention;
FIG. 2 is a rear perspective view of a urea nozzle flange seat in accordance with the present invention;
FIG. 3 is a view of the lower bottom surface of the urea nozzle flange seat according to the present invention;
labeled as: the device comprises a mounting disc 1, a nozzle jack 11, a nozzle cooling cavity 12, a urea pipe joint positioning table 13, a threaded connecting hole 131, a mounting hole 14, a cooling water shell 2, a cooling liquid inlet 21, a cooling backflow port 22, a runner lower port 23 and a connecting plate 3.
Detailed Description
The utility model is further described below with reference to the figures and examples.
As shown in fig. 1-3, the urea nozzle flange seat for the SCR tail gas aftertreatment of the diesel engine according to the present invention comprises a mounting plate 1 and a cooling water housing 2, wherein the cooling water housing 2 is disposed at an edge of an upper surface of the mounting plate 1, the cooling water housing 2 is inclined at a certain angle and fixedly connected to the mounting plate 1, and an inclination angle between the cooling water housing 2 and the mounting plate 1 ranges from 100 ° to 160 °.
The center of the upper surface of the mounting disc 1 is provided with a nozzle jack 11, the center of the lower bottom surface of the mounting disc 1 is provided with a nozzle cooling cavity 12 around the nozzle jack 11, the bottom of the cooling water shell 2 is communicated with the nozzle cooling cavity 12, and the cooling water shell 2 can introduce cooling liquid into the nozzle cooling cavity 12 to cool a urea nozzle passing through the nozzle cooling cavity 12.
Two hydraulic interfaces, namely a cooling liquid inlet 21 and a cooling return port 22, are arranged in the cooling water shell 2, the cooling liquid inlet 21 and the cooling return port 22 both penetrate through the cooling water shell 2 to form two downward flow channels, and a lower port 23 of each flow channel leads to the nozzle cooling cavity 12. The two flow channels corresponding to the cooling liquid inlet 21 and the cooling liquid return port 22 are in accordance with the inclination angle of the cooling water housing 2.
Fixed being equipped with even board 3 between cooling inlet 21 and the cooling return port 22, even board 3 lower extreme and mounting disc 1 upper surface connection, mounting disc 1 and cooling water casing 2 are integrated into one piece.
The mounting plate 1 is of a triangular structure, and mounting holes 14 are respectively formed in three corners of the mounting plate. The upper surface of the mounting disc 1 is provided with a protruding urea pipe joint positioning table 13 around the nozzle insertion hole 11, and two threaded connection holes 131 are symmetrically formed in the urea pipe joint positioning table 13.
The working principle of the utility model is as follows: the mounting plate 1 is used for mounting the flange seat on the outer side of an exhaust pipe, a urea nozzle is mounted at a nozzle insertion hole 11, the urea nozzle penetrates through a nozzle cooling cavity 12, an injection valve of the urea nozzle is aligned to the inside of the exhaust pipe, and the injection direction of the urea is opposite to the direction of air flow in the exhaust pipe, so that catalytic reaction can be more sufficient. The bottom surface of the nozzle cooling cavity 12 is sealed by adopting a sealing sheet, the middle section of the urea nozzle is sealed in the nozzle cooling cavity 12, two hydraulic interfaces are respectively connected with an engine cooling liquid tank, a cooling liquid inlet 21 is used for leading in engine cooling liquid, a cooling liquid return port 22 is used for returning the cooling liquid, the cooling liquid is at a certain inclination angle and rushes into the nozzle cooling cavity 12 from a runner lower port 23, the cooling liquid flows around the peripheral surface of the urea nozzle and is cooled, the cooling effect of the circulating flowing cooling liquid on the urea nozzle is better, the urea nozzle can continuously work, and urea is sprayed. The urea pipe joint positioning table 13 can connect the urea pipe into the urea nozzle in a sealing way, so that the position of the nozzle insertion hole 11 is sealed and isolated from the outside.
The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. Urea nozzle flange seat of diesel engine SCR tail gas aftertreatment, its characterized in that: including mounting disc and cooling water casing, mounting disc upper surface center department is equipped with the nozzle jack, and bottom surface center department is equipped with the nozzle cooling chamber around the nozzle jack under the mounting disc, the cooling water casing sets up at the edge of mounting disc upper surface, cooling water casing bottom and nozzle cooling chamber intercommunication, and the cooling water casing can be with the cooling liquid introduce the nozzle cooling chamber in, cools off the urea nozzle that passes the nozzle cooling chamber.
2. The urea nozzle flange seat for diesel engine SCR tail gas aftertreatment of claim 1, characterized in that: two hydraulic interfaces are arranged in the cooling water shell and are respectively a cooling liquid inlet and a cooling backflow port, the cooling liquid inlet and the cooling backflow port penetrate through the cooling water shell and are provided with two downward flow channels, and the lower end ports of the flow channels are communicated with the nozzle cooling cavity.
3. The urea nozzle flange seat for diesel engine SCR tail gas aftertreatment of claim 2, characterized in that: the cooling water shell is inclined by a certain angle and fixedly connected with the mounting disc, and two flow channels corresponding to the cooling liquid inlet and the cooling backflow port are consistent with the inclination angle of the cooling water shell.
4. The urea nozzle flange seat for diesel engine SCR tail gas aftertreatment of claim 3, characterized in that: the inclination angle between the cooling water shell and the mounting disc ranges from 100 degrees to 160 degrees.
5. The urea nozzle flange seat for diesel engine SCR tail gas aftertreatment of claim 3, characterized in that: and a connecting plate is fixedly arranged between the cooling liquid inlet and the cooling reflux port, and the lower end of the connecting plate is connected with the upper surface of the mounting plate.
6. The urea nozzle flange seat for diesel engine SCR tail gas aftertreatment of claim 1, characterized in that: the installation disc upper surface is equipped with convex urea coupling location platform around the nozzle jack, and urea coupling location bench symmetry is equipped with two threaded connection holes.
7. The urea nozzle flange seat for diesel engine SCR tail gas aftertreatment of claim 1, characterized in that: the mounting disc is of a triangular structure, and mounting holes are formed in three corners of the mounting disc respectively.
8. The urea nozzle flange seat for diesel engine SCR tail gas aftertreatment of claim 1, characterized in that: the mounting plate and the cooling water shell are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122837692.3U CN216894591U (en) | 2021-11-18 | 2021-11-18 | Urea nozzle flange seat for diesel engine SCR tail gas aftertreatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122837692.3U CN216894591U (en) | 2021-11-18 | 2021-11-18 | Urea nozzle flange seat for diesel engine SCR tail gas aftertreatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216894591U true CN216894591U (en) | 2022-07-05 |
Family
ID=82200758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122837692.3U Active CN216894591U (en) | 2021-11-18 | 2021-11-18 | Urea nozzle flange seat for diesel engine SCR tail gas aftertreatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216894591U (en) |
-
2021
- 2021-11-18 CN CN202122837692.3U patent/CN216894591U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108894859B (en) | Post-processor assembly of cylindrical integrated detachable urea nozzle | |
| WO2023131337A1 (en) | Ultra-compact post-processing system, supercharger assembly and engine | |
| CN205190011U (en) | Cartridge SCR aftertreatment hybrid chamber | |
| CN205714370U (en) | Tail-gas after treatment apparatus | |
| CN106523091A (en) | Page window type cyclone urea mixing device | |
| US20100329937A1 (en) | Exhaust gas purification apparatus | |
| CN216894591U (en) | Urea nozzle flange seat for diesel engine SCR tail gas aftertreatment | |
| CN106401715A (en) | Inclined tube type rotationally-flowing urea mixing device | |
| CN108150255B (en) | Treating fluid mixing device for vehicle tail gas treatment | |
| CN209510424U (en) | A kind of preprocessor structure of detachable integrated urea nozzle | |
| CN111764989A (en) | Efficient post-processing packaged SCR mixer system and processing method thereof | |
| CN207905902U (en) | Vehicle tail gas processing treatment fluid mixing arrangement | |
| CN208845717U (en) | A kind of high temperature pressure seal device for the sealing of gas-liquid two-phase | |
| CN213116434U (en) | Novel post-treatment nozzle cooling device | |
| CN111042899A (en) | Aftertreatment mixing arrangement with passive valving | |
| KR102145332B1 (en) | Reducing agent dosing module and selective catalyst reduction system using the same | |
| CN205779138U (en) | Engine exhaust aftertreatment assembly | |
| CN114382581A (en) | High-efficient low back pressure aftertreatment device of diesel engine | |
| CN209637854U (en) | A kind of flow guiding type tail gas urea mixing device | |
| CN111963281B (en) | High-efficient blender of diesel engine aftertreatment | |
| CN106437967A (en) | Honeycomb type rotational flow urea mixing device | |
| CN110761878B (en) | Box-type integrated urea nozzle post-processor assembly | |
| CN207393286U (en) | Cartridge type SCR post-processes spiral-flow type mixing chamber | |
| CN214464517U (en) | Tail gas aftertreatment encapsulation | |
| CN107366566A (en) | Engine exhaust aftertreatment assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |