CN214304015U - U-shaped packaging SCR system hybrid spoiler device meeting national six standards - Google Patents
U-shaped packaging SCR system hybrid spoiler device meeting national six standards Download PDFInfo
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- CN214304015U CN214304015U CN202023114212.2U CN202023114212U CN214304015U CN 214304015 U CN214304015 U CN 214304015U CN 202023114212 U CN202023114212 U CN 202023114212U CN 214304015 U CN214304015 U CN 214304015U
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Abstract
The utility model relates to a satisfy mixed vortex device of U type encapsulation SCR system of six standards in state belongs to diesel engine aftertreatment SCR system auxiliary assembly field. The gas inlet of the shell is provided with a matched guide plate, a rectangular baffle of the guide plate is provided with a matched guide pipe, one end of the guide pipe is hermetically connected with a second round through hole of the rectangular baffle, the other end of the guide pipe is opposite to a liquid inlet, a first round through hole of the guide pipe is opposite to the gas inlet, an arch-shaped baffle is fixedly connected at the gas inlet in a sealing way and protrudes to the middle part of the shell, the gas outlet of the shell is provided with a matched porous plate, the middle part of the porous plate is provided with a mixing pipe, and one end of the mixing pipe with an opening is connected with the porous plate; the utility model discloses simple to operate is swift, has promoted the homogeneity that SCR inlet end face ammonia distributes, has strengthened the efficiency of SCR catalyst.
Description
Technical Field
The utility model relates to a diesel engine aftertreatment SCR system auxiliary assembly field especially relates to a satisfy mixed vortex device of U type encapsulation SCR system of six standards in state.
Background
From 7/1/2012, China applies the fourth-stage emission standard of light automobiles nationwide, and light automobiles which do not reach the fourth emission standard of China cannot enter the new automobile announcement of the Ministry of industry and communications. The latest national standard is that the national emission standard of the vehicles in the fifth stage is implemented nationwide from 2018, 1 month and 1 day, and the national emission standard of the vehicles in the fifth stage is implemented in advance from 2016, 1 month and 1 day in Beijing. The SCR after-treatment technology of the diesel engine is adopted to meet the emission regulations of the countries of the fourth country, the fifth country and the like. Nowadays, China already determines that the national six standards are implemented from 7/1/2019, and the SCR post-treatment system at the present stage is not only complex in structure and expensive, but also difficult to meet the national six emission requirements.
The existing mixed turbulence device has poor mixed turbulence effect, and after tail gas and urea pass through the existing mixed turbulence device, the ammonia distribution uniformity on the end face of the SCR catalyst does not meet the requirement (the requirement that the engineering target is not less than 0.95 needs to be met), so that the catalytic efficiency of the SCR catalyst is low, and meanwhile, the system has high back pressure and is not beneficial to vehicle emission.
SUMMERY OF THE UTILITY MODEL
To defect and not enough problem among the prior art, the utility model provides a satisfy mixed vortex device of U type encapsulation SCR system of six standards in the state, simple to operate is swift, mixes the vortex effectual.
The utility model provides a technical scheme that its technical problem adopted is:
a mixed turbulence device of a U-shaped packaged SCR system meeting the national six standards comprises a shell, a flow guide pipe, a flow guide plate, a mixing pipe and a porous plate;
the shell is provided with a liquid inlet, an air inlet and an air outlet, and the air inlet and the air outlet are circular and are respectively arranged at two ends of the same side surface of the shell;
the side wall of the flow guide pipe is provided with three first rectangular through holes and a row of first round through holes which are uniformly arranged;
the guide plate comprises a rectangular baffle and an arched baffle, a second circular through hole is formed in the middle of the rectangular baffle, second rectangular through holes and guide vanes matched with the second rectangular through holes are formed in two sides of the second circular through hole of the rectangular baffle, the included angle between the guide vanes and the plane where the second rectangular through holes are located is 30-60 degrees, the arrangement direction of the guide vanes is consistent with the arrangement direction of the arched baffle, the diameter of the arched baffle is equal to that of the air inlet, and the rectangular baffle is vertically and fixedly connected with the arched baffle;
the total area of the first rectangular through hole, the first circular through hole, the second circular through hole and the second rectangular through hole is not less than 1.5 times of the area of the air inlet;
one end of the mixing pipe is arranged in a sealing mode, the other end of the mixing pipe is arranged in an opening mode, a third rectangular through hole is formed in the side wall of the mixing pipe, and the area of the third rectangular through hole of the mixing pipe is not smaller than 1.5 times that of the air inlet;
the perforated plate is annular and is provided with third circular through holes which are uniformly distributed along the circumferential direction;
the air inlet of the shell is provided with a matched guide plate, the rectangular baffle of the guide plate is provided with a matched flow guide pipe, one end of the flow guide pipe is hermetically connected with the second round through hole of the rectangular baffle, the other end of the flow guide pipe is opposite to the liquid inlet, the first round through hole of the flow guide pipe is opposite to the air inlet, the arched baffle is fixedly connected at the air inlet in a sealing way and protrudes to the middle part of the shell, the air outlet of the shell is provided with a matched porous plate, and the middle part of the porous plate is provided with a mixing pipe; the mixing tube has an open end connected to the perforated plate.
Furthermore, the number of the first round through holes of the flow guide pipe is six to ten.
Further, the diameter of the first round through hole of the flow guide pipe is six to ten millimeters.
Further, the diameter of the third circular through hole of the porous plate is six to ten millimeters.
Furthermore, the central angle of the cambered surface where the third rectangular through hole is located is 120-160 degrees, and the acute angle between the vertical diameter direction of the chord surface corresponding to the cambered surface where the third rectangular through hole is located and the horizontal direction is 45-85 degrees.
Furthermore, the connection mode of the guide pipe and the guide plate is welding.
Furthermore, the connection mode of the guide plate and the shell is welding.
Furthermore, the connection mode of the porous plate and the shell is welding.
Furthermore, the connection mode of the mixing pipe and the porous plate is welding.
Furthermore, the mixing pipe and the shell are connected in a welding mode.
The utility model discloses following beneficial effect has: the utility model discloses an adopt the honeycomb duct of new design, guide plate, hybrid tube and the combination use of perforated plate, can the effectual crystallization condition that improves urea, increased the mix time of urea and tail gas to can let the mixture of tail gas and urea more abundant, even, promoted the homogeneity that SCR inlet end face ammonia distributes (satisfy the engineering target and be greater than or equal to 0.95 requirement), strengthened the efficiency of SCR catalyst, reduced the whole set of system's backpressure simultaneously.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a combined structure of a draft tube and a deflector;
FIG. 3 is a schematic view of the combination structure of the mixing tube and the perforated plate.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 3, a U-shaped packaged SCR system hybrid spoiler device meeting the national six standards includes a housing 1, a flow guide pipe 2, a flow guide plate 3, a mixing pipe 4, and a porous plate 5; the shell 1 is provided with a liquid inlet 11, an air inlet 12 and an air outlet 13, wherein the air inlet 12 and the air outlet 13 are circular and are respectively arranged at two ends of the same side surface of the shell 1; the side wall of the draft tube 2 is provided with three first rectangular through holes 21 and a row of first round through holes 22 which are uniformly arranged; the guide plate 3 comprises a rectangular baffle 31 and an arched baffle 32, a second circular through hole 313 is arranged in the middle of the rectangular baffle 31, second rectangular through holes 311 and guide pieces 312 matched with the second rectangular through holes 311 are arranged on two sides of the second circular through hole 313 of the rectangular baffle 31, the included angle of the planes of the guide pieces 312 and the second rectangular through holes 311 is 30-60 degrees, the arrangement direction of the guide pieces 313 is consistent with the arrangement direction of the arched baffle 32, the diameter of the arched baffle 32 is equal to that of the air inlet 12, and the rectangular baffle 31 is vertically and fixedly connected with the arched baffle 32; the total area of the first rectangular through hole 21, the first circular through hole 22, the second circular through hole 313 and the second rectangular through hole 311 is not less than 1.5 times of the area of the air inlet 12; one end of the mixing pipe 4 is arranged in a sealing mode, the other end of the mixing pipe 4 is arranged in an opening mode, a third rectangular through hole 41 is formed in the side wall of the mixing pipe 4, and the area of the third rectangular through hole 41 of the mixing pipe 4 is not smaller than 1.5 times that of the air inlet; the porous plate 5 is annular, and the porous plate 5 is provided with third circular through holes 51 which are uniformly distributed along the circumferential direction; the air inlet 12 of the shell 1 is provided with a matched guide plate 3, the rectangular baffle 31 of the guide plate 3 is provided with a matched guide pipe 2, one end of the guide pipe 2 is hermetically connected with the second round through hole 313 of the rectangular baffle 31, the other end of the guide pipe is opposite to the liquid inlet 11, the first round through hole 22 of the guide pipe 2 is opposite to the air inlet 12, the arched baffle 32 is fixedly connected at the air inlet 12 in a sealing way and protrudes to the middle part of the shell 1, the air outlet 13 of the shell 1 is provided with a matched porous plate 5, and the middle part of the porous plate 5 is provided with a mixing pipe 4; the mixing tube 4 has an open end connected to a perforated plate. The pipe diameter of the flow guide pipe 2 is selected according to the engine displacement, generally the pipe diameter of a machine type below 3L is more than or equal to 76mm, the pipe diameter of a machine type below 3L is more than or equal to 89mm, the pipe diameter of a machine type below 7L to 9L is more than or equal to 101.6mm, and the pipe diameter of a machine type below 9L to 13L is more than or equal to 127 mm.
The utility model discloses following beneficial effect has: when the utility model works, urea solution enters the flow guide pipe 2 through the liquid inlet, tail gas enters the shell 1 and the flow guide pipe 2 through the air inlet 12, and during the period, the tail gas passes through the first rectangular through hole 21 of the flow guide pipe 2 and the first round through hole 22 opposite to the air inlet 12, wherein the first rectangular through hole 21 can prevent the passing air flow from directly blowing the urea to the shell 1 or the wall surface of the flow guide pipe 2 to form wall collision crystallization; then the tail gas and the urea solution pass through the second round through hole 313 and the second rectangular through hole 311 of the guide plate 3, and the guide plate 312 plays a role in guiding flow, so that the urea solution and the tail gas are fully mixed, and the back pressure is reduced; finally, the air current after the mixture is partly through the third rectangle through-hole 41 of hybrid tube 4, and the third circular through-hole 51 of porous plate 5 is passed through to another part, and the combined operation of porous plate 5 and hybrid tube 4 has increased the mixing time of urea solution and tail gas for mix more fully, evenly, promoted the homogeneity of SCR catalyst inlet end air current, make the efficiency of SCR catalyst higher.
As shown in fig. 1, the number of the first circular through holes 22 of the draft tube 2 is six to ten, which is the best effect.
As shown in fig. 1, the diameter of the first circular through hole 22 of the draft tube 2 is six to ten millimeters, which is the best effect.
As shown in fig. 1, the third circular through hole 51 of the porous plate 5 has a diameter of six to ten mm, which is most effective.
As shown in fig. 1, the central angle subtended by the arc surface of the third rectangular through hole 41 is 120-160 °, and the acute angle between the vertical diameter direction and the horizontal direction of the chord surface corresponding to the arc surface of the third rectangular through hole 41 is 45-85 °, which is the best effect in this interval.
As shown in fig. 1, the draft tube 2 and the guide plate 3 are connected by welding, and the connection effect is good.
As shown in fig. 1, the connection mode between the baffle 3 and the housing 1 is welding, and the stability is good.
As shown in fig. 1, the porous plate 5 and the housing 1 are connected by welding, which provides good stability.
As shown in fig. 1, the mixing tube 4 and the porous plate 5 are connected by welding, which has a good connection effect.
As shown in fig. 1, the mixing tube 4 and the shell 1 are connected by welding, which has a good connection effect.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, and the present invention will have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a satisfy mixed vortex device of U type encapsulation SCR system of six standards in state which characterized in that: comprises a shell, a flow guide pipe, a flow guide plate, a mixing pipe and a porous plate;
the shell is provided with a liquid inlet, an air inlet and an air outlet, and the air inlet and the air outlet are circular and are respectively arranged at two ends of the same side surface of the shell;
the side wall of the flow guide pipe is provided with three first rectangular through holes and a row of first round through holes which are uniformly arranged;
the guide plate comprises a rectangular baffle and an arched baffle, a second circular through hole is formed in the middle of the rectangular baffle, second rectangular through holes and guide vanes matched with the second rectangular through holes are formed in two sides of the second circular through hole of the rectangular baffle, the included angle between the guide vanes and the plane where the second rectangular through holes are located is 30-60 degrees, the arrangement direction of the guide vanes is consistent with the arrangement direction of the arched baffle, the diameter of the arched baffle is equal to that of the air inlet, and the rectangular baffle is vertically and fixedly connected with the arched baffle;
the total area of the first rectangular through hole, the first circular through hole, the second circular through hole and the second rectangular through hole is not less than 1.5 times of the area of the air inlet;
one end of the mixing pipe is arranged in a sealing mode, the other end of the mixing pipe is arranged in an opening mode, a third rectangular through hole is formed in the side wall of the mixing pipe, and the area of the third rectangular through hole of the mixing pipe is not smaller than 1.5 times that of the air inlet;
the perforated plate is annular and is provided with third circular through holes which are uniformly distributed along the circumferential direction;
the air inlet of the shell is provided with a matched guide plate, the rectangular baffle of the guide plate is provided with a matched flow guide pipe, one end of the flow guide pipe is hermetically connected with the second round through hole of the rectangular baffle, the other end of the flow guide pipe is opposite to the liquid inlet, the first round through hole of the flow guide pipe is opposite to the air inlet, the arched baffle is fixedly connected at the air inlet in a sealing way and protrudes to the middle part of the shell, the air outlet of the shell is provided with a matched porous plate, and the middle part of the porous plate is provided with a mixing pipe; the mixing tube has an open end connected to the perforated plate.
2. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the number of the first round through holes of the flow guide pipe is six to ten.
3. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the diameter of the first round through hole of the flow guide pipe is six to ten millimeters.
4. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the diameter of the third circular through hole of the porous plate is six to ten millimeters.
5. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the central angle of the cambered surface where the third rectangular through hole is located is 120-160 degrees, and the acute angle between the vertical diameter direction of the chord surface corresponding to the cambered surface where the third rectangular through hole is located and the horizontal direction is 45-85 degrees.
6. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the connection mode of the flow guide pipe and the flow guide plate is welding.
7. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the connection mode of the guide plate and the shell is welding.
8. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the connection mode of the porous plate and the shell is welding.
9. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the connection mode of the mixing pipe and the porous plate is welding.
10. The hybrid spoiler device of a U-shaped packaged SCR system according to claim 1, wherein: the mixing pipe and the shell are connected in a welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023114212.2U CN214304015U (en) | 2020-12-22 | 2020-12-22 | U-shaped packaging SCR system hybrid spoiler device meeting national six standards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023114212.2U CN214304015U (en) | 2020-12-22 | 2020-12-22 | U-shaped packaging SCR system hybrid spoiler device meeting national six standards |
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| Publication Number | Publication Date |
|---|---|
| CN214304015U true CN214304015U (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023114212.2U Active CN214304015U (en) | 2020-12-22 | 2020-12-22 | U-shaped packaging SCR system hybrid spoiler device meeting national six standards |
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| Country | Link |
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| CN (1) | CN214304015U (en) |
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