CN213450565U - Tail gas aftertreatment encapsulation - Google Patents
Tail gas aftertreatment encapsulation Download PDFInfo
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- CN213450565U CN213450565U CN202022650585.5U CN202022650585U CN213450565U CN 213450565 U CN213450565 U CN 213450565U CN 202022650585 U CN202022650585 U CN 202022650585U CN 213450565 U CN213450565 U CN 213450565U
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- aftertreatment
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Abstract
An exhaust aftertreatment package comprising a housing assembly, a first aftertreatment carrier assembly removably mounted within the housing assembly, a second aftertreatment carrier assembly mounted within the housing assembly downstream of the first aftertreatment carrier assembly in an exhaust flow direction, and a cavity assembly mated with the housing assembly, the cavity assembly being located between the first and second aftertreatment carrier assemblies in the exhaust flow direction; the cavity assembly includes a first port, a second port, an inner cavity communicating the first port with the second port, a first flange portion surrounding the first port, and a second flange portion surrounding the second port, the first flange portion and the second flange portion being detachably mounted to the housing assembly by a mounting member.
Description
Technical Field
The utility model relates to a tail gas aftertreatment encapsulation belongs to engine exhaust aftertreatment technical field.
Background
Existing exhaust aftertreatment packages typically include a diesel oxidation catalyst, a diesel particulate trap, and a selective catalytic reductant, among others. To improve performance, existing exhaust aftertreatment packages typically further include a mixing chamber assembly located between the diesel particulate trap and the selective catalytic reduction agent, which typically includes a mixing tube to uniformly mix the exhaust and urea droplets.
As is well known, a diesel particulate filter is used to capture particulate matters in exhaust, and when the particulate matters accumulate to a certain degree, the backpressure of the system is easily too large, so how to clean the particulate matters is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an easily dismantled tail gas aftertreatment encapsulation.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an exhaust aftertreatment package comprising a housing assembly, a first aftertreatment carrier assembly removably mounted within the housing assembly, a second aftertreatment carrier assembly mounted within the housing assembly downstream of the first aftertreatment carrier assembly in an exhaust flow direction, and a cavity assembly mated with the housing assembly, the cavity assembly being located between the first and second aftertreatment carrier assemblies in the exhaust flow direction; the cavity assembly includes a first port, a second port, an inner cavity communicating the first port with the second port, a first flange portion surrounding the first port, and a second flange portion surrounding the second port, the first flange portion and the second flange portion being detachably mounted to the housing assembly by a mounting member.
As a further improved technical solution of the present invention, the first post-processing carrier assembly includes a first housing and a first post-processing carrier enclosed in the first housing; the housing assembly includes a first mounting cartridge partially housing the first housing.
As a further improved technical solution of the utility model, a first installation section of thick bamboo is equipped with annular first bulge, one side of first casing is equipped with annular bellying, the installation component includes first clamp, first clamp will first flange portion the bellying with first bulge is together fixed.
As a further improved technical solution of the present invention, the protruding portion is provided with a first side portion, a second side portion, and is sleeved with a first sealing gasket on the first side portion and is sleeved with a second sealing gasket on the second side portion, the first sealing gasket is located the first flange portion with between the first side portion, the second sealing gasket is located the second side portion with between the first protruding portion.
As the utility model discloses further modified technical scheme, a first installation section of thick bamboo is equipped with along a plurality of protruding location convex hulls of radial inside, first casing is kept away from the surface of one side of bellying with the location convex hull cooperatees.
As the utility model discloses further modified technical scheme, the encapsulation of tail gas aftertreatment is including installing trompil board in the first installation section of thick bamboo and fixing annular steel wire fine hair on the trompil board, first casing is kept away from the one end of bellying is inserted annular steel wire fine hair is fixed a position.
As a further improved technical solution of the utility model, the housing assembly includes a second installation section of thick bamboo, a second installation section of thick bamboo is equipped with annular second bulge, the installation component includes the second clamp, the second clamp will second flange portion with the second bulge is together fixed.
As the utility model discloses further modified technical scheme, cavity assembly still is equipped with at least part and extends into spiral-flow tube in the second installation section of thick bamboo, cavity assembly still is equipped with the mount pad that is used for installing the urea nozzle, the urea nozzle be used for to spray atomizing urea liquid drop in the spiral-flow tube.
As a further improved technical scheme of the utility model, the second flange portion encircle in the periphery of whirl pipe, the tail gas aftertreatment encapsulation still is equipped with and is located the second flange portion with third between the second bulge is sealed to fill up.
As a further improved technical solution of the present invention, the first aftertreatment carrier assembly is a diesel particulate trap assembly, and the second aftertreatment carrier assembly is a selective catalytic reduction agent assembly.
Compared with the prior art, the utility model discloses will first flange portion with second flange portion pass through mounting means detachably install in casing assembly, thereby convenient to detach casing assembly, and then convenient to detach first aftertreatment carrier subassembly.
Drawings
Fig. 1 is a schematic perspective view of the exhaust aftertreatment package according to an embodiment of the present invention.
Fig. 2 is a partially exploded perspective view of fig. 1.
Fig. 3 is a front view of fig. 1.
Fig. 4 is a schematic cross-sectional view taken along line a-a of fig. 3 in one embodiment.
Fig. 5 is a partially enlarged view of the circled portion in fig. 4.
Fig. 6 is a schematic sectional view taken along the line a-a in fig. 3 in another embodiment.
Fig. 7 is a partially enlarged view of the circled portion in fig. 6.
Detailed Description
Referring to fig. 1 to 7, the present invention discloses an exhaust gas aftertreatment package 100, which includes a housing assembly 40, a first aftertreatment carrier assembly 10 detachably mounted in the housing assembly 40, a second aftertreatment carrier assembly 20 mounted in the housing assembly 40 and located downstream of the first aftertreatment carrier assembly 10 in an exhaust gas flow direction, and a cavity assembly 50 engaged with the housing assembly 40. The chamber assembly 50 is located between the first aftertreatment carrier assembly 10 and the second aftertreatment carrier assembly 20 in the exhaust gas flow direction. The chamber body assembly 50 is detachably mounted to the housing assembly 40 by a mounting member.
In the illustrated embodiment of the present invention, the exhaust aftertreatment package 100 is a box-type structure. The housing assembly 40 includes an outer housing 401, an inlet pipe 402, an outlet pipe 403, a baffle 404, a first mounting cylinder 405, and a second mounting cylinder 406. The first mounting cylinder 405 and the second mounting cylinder 406 both partially protrude from the baffle 404. The first mounting cylinder 405 is provided with a first annular projection 4051, and the second mounting cylinder 406 is provided with a second annular projection 4061.
The first aftertreatment carrier assembly 10 includes a first housing 11 and a first aftertreatment carrier 12 enclosed within the first housing 11. The first mounting cylinder 405 is used to partially accommodate the first housing 11. The first aftertreatment carrier assembly 10 is removably mounted to the first mounting cylinder 405. In the illustrated embodiment of the present invention, the first aftertreatment carrier assembly 10 is a diesel particulate trap assembly (DPF). The second aftertreatment support assembly 20 is a Selective Catalytic Reduction (SCR) assembly. In the illustrated embodiment of the present invention, the exhaust aftertreatment package 100 further includes a diesel oxidation catalyst assembly 70(DOC) mounted upstream of the first aftertreatment carrier assembly 10.
One side of the first housing 11 is provided with an annular protrusion 111. The boss 111 is provided with a first side 1111, a second side 1112, a first gasket 1113 sleeved on the first side 1111, and a second gasket 1114 sleeved on the second side 1112.
Referring to fig. 4 and 5, in an embodiment of the present invention, the first mounting cylinder 405 is provided with a plurality of positioning protrusions 4052 protruding inward in a radial direction, and the outer surface 112 of the first housing 11 on the side away from the protruding portion 111 is matched with the positioning protrusions 4052 to improve the coaxiality.
Referring to fig. 6 and 7, in another embodiment of the present invention, the exhaust gas aftertreatment package 100 includes a hole plate 407 installed in the first installation cylinder 405 and a ring-shaped steel wool 408 fixed on the hole plate 407, and one end of the first casing 11 away from the protruding portion 111 is inserted into the ring-shaped steel wool 408 for positioning.
The chamber assembly 50 includes a first port 501, a second port 502, an inner chamber 503 communicating the first port 501 and the second port 502, a first flange portion 504 surrounding the first port 501, and a second flange portion 505 surrounding the second port 502, and the first flange portion 504 and the second flange portion 505 are detachably mounted to the housing assembly 40 by the mounting member. The chamber body assembly 50 is further provided with a swirl tube 506 extending at least partially into the second mounting cylinder 406. The second flange 505 surrounds the outer periphery of the swirl tube 506. The cavity assembly 50 is further provided with a mounting seat 507 for mounting the urea nozzle 200, and the urea nozzle 200 is used for spraying atomized urea liquid drops into the cyclone pipe 506.
Specifically, the mounting member includes a first yoke 61 and a second yoke 62. The first clamp 61 secures the first flange portion 504, the boss portion 111, and the first projection 4051 together. The first gasket 1113 is positioned between the first flange portion 504 and the first side portion 1111 and the second gasket 1114 is positioned between the second side portion 1112 and the first protrusion portion 4051 to provide a seal. The second clip 62 secures the second flange portion 505 and the second projecting portion 4061 together. The exhaust aftertreatment package 100 is further provided with a third gasket 1115 between the second flange 505 and the second protruding portion 4061 to achieve sealing.
When the exhaust gas aftertreatment device is used, exhaust gas of an engine enters the exhaust gas aftertreatment package 100 from the air inlet pipe 402, then sequentially flows through the diesel oxidation catalyst assembly 70 and the first aftertreatment carrier assembly 10, and then enters the cavity assembly 50 from the first port 501; the exhaust gas then flows through the inner cavity 503 and out the second port 502; then, the tail gas flows into the cyclone pipe 506 in a cyclone shape; when the urea injection condition is reached, the urea injector 200 injects atomized urea droplets into the swirl tube 506; at this time, the mixed gas flow of the rotating tail gas and the urea liquid drops flows downstream; the combined gas stream then flows through the second aftertreatment support assembly 20 and finally exits through the outlet duct 403.
When disassembly is required, the chamber body assembly 50 can be removed by disassembling the first and second clips 61, 62; at this time, the first housing 11 portion of the first aftertreatment carrier assembly 10 is exposed at one side of the baffle 404 for easy removal. The removed first aftertreatment carrier assembly 10 may be cleaned or replaced and reinstalled into the first mounting cylinder 405. Of course, since the cyclone tube 506 is connected to the chamber assembly 50, when the chamber assembly 50 is disassembled, the cyclone tube can be cleaned to remove urea crystals that may appear thereon.
The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, and although the present specification has described the present invention in detail with reference to the above embodiments, the skilled personnel in the art should understand that the technical personnel in the technical field can still modify or substitute the present invention, and all the technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.
Claims (10)
1. An exhaust aftertreatment package comprising a housing assembly, a first aftertreatment carrier assembly removably mounted within the housing assembly, a second aftertreatment carrier assembly mounted within the housing assembly downstream of the first aftertreatment carrier assembly in an exhaust flow direction, and a cavity assembly mated with the housing assembly, the cavity assembly being located between the first and second aftertreatment carrier assemblies in the exhaust flow direction; the method is characterized in that: the cavity assembly includes a first port, a second port, an inner cavity communicating the first port with the second port, a first flange portion surrounding the first port, and a second flange portion surrounding the second port, the first flange portion and the second flange portion being detachably mounted to the housing assembly by a mounting member.
2. The exhaust aftertreatment package of claim 1, wherein: the first aftertreatment carrier assembly comprises a first housing and a first aftertreatment carrier encapsulated within the first housing; the housing assembly includes a first mounting cartridge partially housing the first housing.
3. The exhaust aftertreatment package of claim 2, wherein: the first installation barrel is provided with an annular first protruding portion, one side of the first shell is provided with an annular protruding portion, the installation component comprises a first clamp, and the first clamp fixes the first flange portion, the protruding portion and the first protruding portion together.
4. The exhaust aftertreatment package of claim 3, wherein: the bulge is provided with a first side part, a second side part, a first sealing gasket sleeved on the first side part and a second sealing gasket sleeved on the second side part, the first sealing gasket is located between the first flange part and the first side part, and the second sealing gasket is located between the second side part and the first bulge part.
5. The exhaust aftertreatment package of claim 3, wherein: the first mounting cylinder is provided with a plurality of positioning convex hulls which protrude inwards along the radial direction, and the outer surface of one side of the first shell, which is far away from the protruding part, is matched with the positioning convex hulls.
6. The exhaust aftertreatment package of claim 3, wherein: the tail gas aftertreatment encapsulation comprises a perforated plate and annular steel wool, the perforated plate is installed in the first installation cylinder, the annular steel wool is fixed on the perforated plate, and one end, far away from the protruding portion, of the first shell is inserted into the annular steel wool to be located.
7. The exhaust aftertreatment package of claim 2, wherein: the housing assembly includes a second mounting cylinder provided with an annular second projection, the mounting member includes a second clip that secures the second flange portion and the second projection together.
8. The exhaust aftertreatment package of claim 7, wherein: the cavity assembly is also provided with a cyclone tube at least part of which extends into the second mounting cylinder, and the cavity assembly is also provided with a mounting seat for mounting a urea nozzle, and the urea nozzle is used for spraying atomized urea liquid drops into the cyclone tube.
9. The exhaust aftertreatment package of claim 8, wherein: the second flange portion surrounds the periphery of whirl pipe, the tail gas aftertreatment encapsulation still is equipped with and is located the second flange portion with the third is sealed to fill up between the second bulge.
10. The exhaust aftertreatment package of any one of claims 1 to 9, wherein: the first aftertreatment carrier component is a diesel particulate trap component and the second aftertreatment carrier component is a selective catalytic reduction agent component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022650585.5U CN213450565U (en) | 2020-11-16 | 2020-11-16 | Tail gas aftertreatment encapsulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022650585.5U CN213450565U (en) | 2020-11-16 | 2020-11-16 | Tail gas aftertreatment encapsulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213450565U true CN213450565U (en) | 2021-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022650585.5U Active CN213450565U (en) | 2020-11-16 | 2020-11-16 | Tail gas aftertreatment encapsulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213450565U (en) |
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2020
- 2020-11-16 CN CN202022650585.5U patent/CN213450565U/en active Active
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