CN217681928U - Exhaust purification silencer of marine diesel engine - Google Patents
Exhaust purification silencer of marine diesel engine Download PDFInfo
- Publication number
- CN217681928U CN217681928U CN202221249534.4U CN202221249534U CN217681928U CN 217681928 U CN217681928 U CN 217681928U CN 202221249534 U CN202221249534 U CN 202221249534U CN 217681928 U CN217681928 U CN 217681928U
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- China
- Prior art keywords
- exhaust
- catalytic reaction
- reaction tube
- fixedly connected
- diesel engine
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- 238000000746 purification Methods 0.000 title claims abstract description 31
- 230000003584 silencer Effects 0.000 title claims abstract description 12
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000030279 gene silencing Effects 0.000 claims abstract description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 16
- 239000004202 carbamide Substances 0.000 abstract description 16
- 239000007864 aqueous solution Substances 0.000 abstract description 15
- 238000009413 insulation Methods 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 19
- 230000009467 reduction Effects 0.000 description 15
- 238000006722 reduction reaction Methods 0.000 description 15
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a marine diesel engine exhaust purification silencer relates to diesel engine exhaust technical field. The utility model comprises a catalytic reaction tube, and a silencing component is fixedly arranged outside the catalytic reaction tube; the two ends of the catalytic reaction tube are respectively and fixedly provided with an air inlet component and an exhaust component, and one end of the catalytic reaction tube, which is close to the exhaust component, is fixedly provided with a purification component; the silencing component comprises an inner shell, an outer shell and a heat insulation silencing material, wherein the inner shell is fixedly connected with the catalytic reaction tube; the purification assembly comprises a conical barrel, an exhaust net, a mounting ring, a nozzle and a sliding rail, the conical barrel is arranged inside the catalytic reaction tube and close to the exhaust assembly, and the exhaust net is fixedly connected inside the conical barrel. The utility model discloses a nozzle can slide sprays atomizing urea aqueous solution on the exhaust net, makes the tail gas through the exhaust net can both take place the hybrid reaction with urea aqueous solution like this for the effect of tail gas treatment strengthens greatly.
Description
Technical Field
The utility model belongs to the technical field of the diesel engine exhaust, especially, relate to a marine diesel engine exhaust purification silencer.
Background
The air pollution caused by ships mainly comes from the exhaust pollution of ship diesel engines, and along with the implementation of stricter emission standards of international maritime organization, the ship-equipped diesel engine exhaust emission purification treatment system becomes an inevitable choice.
At present, most of marine diesel engine exhaust purification devices adopt a selective catalytic reduction reaction denitration device, the working principle of the device is that the reduction function of ammonia (NH 3) on nitrogen oxide (NOx) is utilized, the nitrogen oxide is reduced into N2 and water which have no influence on the atmosphere by utilizing the action of a catalyst, but the problem of low NOx conversion efficiency caused by uneven mixing of urea aqueous solution and diesel engine tail gas in the existing structure still exists, so that urea is decomposed and ammonia is unevenly distributed, and a large amount of noise is generated in the exhaust process.
The existing exhaust purification device for the marine diesel engine cannot enable urea aqueous solution and diesel engine tail gas to be uniformly mixed, so that the tail gas purification effect is poor, and noise and heat can be generated in the exhaust process, so that the exhaust purification silencer for the marine diesel engine is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a marine diesel exhaust purification silencer solves current marine diesel exhaust purification device and can not make urea aqueous solution and diesel engine tail gas misce bene, leads to the tail gas clean-up effect relatively poor, can produce noise and thermal problem among the exhaust process simultaneously.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to an exhaust purification silencer of a marine diesel engine, which comprises a catalytic reaction tube, wherein a silencing component is fixedly arranged outside the catalytic reaction tube; the two ends of the catalytic reaction tube are respectively and fixedly provided with an air inlet component and an exhaust component, one end of the catalytic reaction tube, which is close to the exhaust component, is fixedly provided with a purification component, and the catalytic reaction tube is internally used for realizing the mixed reaction of urea aqueous solution and diesel engine tail gas;
the noise reduction assembly comprises an inner shell, an outer shell and a heat insulation noise reduction material, wherein the inner shell is fixedly connected with the catalytic reaction tube, a gap is formed between the inner shell and the outer shell, the inner shell and the outer shell are fixedly connected through the heat insulation noise reduction material, the inner shell and the outer shell are used for bearing the heat insulation noise reduction material, the heat insulation noise reduction material plays a role in heat insulation and noise reduction, and air between the inner shell and the catalytic reaction tube plays a certain noise reduction role and is used for isolating heat;
the purification assembly comprises a conical barrel, an exhaust net, a mounting ring, a nozzle and a slide rail, the conical barrel is arranged in the catalytic reaction tube and close to the exhaust assembly, and the exhaust net is fixedly connected in the conical barrel; the two opposite sides of the inner wall of the catalytic reaction tube are respectively and fixedly connected with slide rails, the two slide rails are movably connected with a mounting ring, the slide rails are arranged inside the mounting ring, the surface area of a conical cylinder is increased, tail gas can only flow out of the interior of an exhaust net, so that the urea aqueous solution can be sprayed out by a nozzle to be mixed and reacted with the tail gas, part of urea aqueous solution particles are attached to the surface of the exhaust net, the tail gas is reacted with the tail gas when passing through the urea aqueous solution particles, and the slide rails are used for driving the nozzle to move back and forth, so that the urea aqueous solution is sprayed onto the exhaust net by the nozzle in a spraying state.
Preferably, the subassembly that admits air includes air inlet housing, air inlet flange and a fixing bolt, air inlet housing one end fixedly connected with air inlet flange, through three fixing bolt fixed connection, it is three between air inlet flange and the catalytic reaction pipe one end first fixing bolt all arrays on air inlet flange, and air inlet housing is used for connecting the diesel engine, and air inlet flange is used for being connected air inlet housing and catalytic reaction pipe, and a fixing bolt is used for locking air inlet flange.
Preferably, the exhaust subassembly is including giving vent to anger the casing, giving vent to anger flange and second fixing bolt, give vent to anger casing one end and the flange fixed connection of giving vent to anger, give vent to anger through three second fixing bolt fixed connection, three between flange and the catalytic reaction pipe the equal array of second fixing bolt is on the flange of giving vent to anger, and the casing of giving vent to anger is used for discharging the tail gas that purifies the completion, and the flange of giving vent to anger is used for connecting the casing of giving vent to anger and catalytic reaction pipe, and second fixing bolt is used for locking the flange of admitting air.
Preferably, the outer shell, the heat insulation and noise reduction material, the inner shell and the catalytic reaction tube are arranged from outside to inside in sequence.
Preferably, the outer wall of the conical barrel is fixedly connected with a connecting hoop, the connecting hoop is fixedly connected to the inner wall of the catalytic reaction tube, and the connecting hoop is used for fixing the conical barrel to the inner wall of the catalytic reaction tube.
Preferably, the inner wall of the mounting ring is fixedly connected with a nozzle seat, the inner wall of the nozzle seat is fixedly connected with a nozzle, and the nozzle seat is used for connecting and fixing the nozzle on the mounting ring.
The utility model discloses following beneficial effect has:
the utility model arranges the inner shell outside the catalytic reaction tube, and a certain gap is arranged between the inner shell and the catalytic reaction tube, the gap can isolate part of noise and heat, and the rest noise and heat are eliminated by the heat insulation and noise elimination material between the inner shell and the outer shell, thereby well eliminating the heat and noise generated during the tail gas purification; through setting up a toper section of thick bamboo to area of contact when increasing the exhaust, and spray atomizing urea aqueous solution on the exhaust network through can sliding nozzle, make like this that the tail gas through the exhaust network can both take place the mixing reaction with urea aqueous solution, make the effect of tail gas treatment strengthen greatly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the exhaust purification muffler of the marine diesel engine provided by the present invention;
fig. 2 is a schematic view of a section structure of an exhaust purification muffler of a marine diesel engine according to the present invention;
FIG. 3 is an enlarged view of the point A in FIG. 2 according to the present invention;
fig. 4 is a schematic view of the internal structure of the exhaust purification muffler of the marine diesel engine provided by the present invention;
fig. 5 is an enlarged view of the point B in fig. 4 according to the present invention.
In the drawings, the reference numbers indicate the following list of parts:
1. an air intake housing; 2. an air inlet flange; 3. a first fixing bolt; 4. a catalytic reaction tube; 5. an air outlet shell; 6. an air outlet flange; 7. a second fixing bolt; 8. an inner shell; 9. a housing; 10. a heat insulating and sound deadening material; 11. a connecting hoop; 12. a tapered barrel; 13. an exhaust net; 14. a mounting ring; 15. a nozzle holder; 16. a nozzle; 17. a slide rail.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Referring to fig. 1-5, the utility model relates to a marine diesel engine exhaust purification muffler, which comprises a catalytic reaction tube 4, and a silencing component is fixedly arranged outside the catalytic reaction tube 4; an air inlet assembly and an exhaust assembly are respectively and fixedly arranged at two ends of the catalytic reaction tube 4, a purification assembly is fixedly arranged at one end, close to the exhaust assembly, inside the catalytic reaction tube 4, and the catalytic reaction tube 4 is used for realizing the mixed reaction of the urea water solution and the tail gas of the diesel engine;
the noise reduction assembly comprises an inner shell 8, an outer shell 9 and a heat insulation and noise reduction material 10, wherein the inner shell 8 is fixedly connected with the catalytic reaction tube 4, a gap is formed between the inner shell 8 and the outer shell 9, the inner shell 8 and the outer shell 9 are fixedly connected through the heat insulation and noise reduction material 10, the heat insulation and noise reduction material 10 plays a role in heat insulation and noise reduction, and air between the inner shell 8 and the catalytic reaction tube 4 plays a certain noise reduction role and is used for isolating heat;
the purification component comprises a conical cylinder 12, an exhaust net 13, a mounting ring 14, a nozzle 16 and a slide rail 17, the conical cylinder 12 is arranged in the catalytic reaction tube 4 and is close to the exhaust component, and the exhaust net 13 is fixedly connected in the conical cylinder 12; 4 inner wall opposite sides of catalytic reaction pipe are fixedly connected with slide rail 17 respectively, two slide rails 17 all with collar 14 swing joint, collar 14 inside is provided with slide rail 17, a toper section of thick bamboo 12 increases the surface area, make tail gas only can follow the inside outflow of exhaust net 13, thereby nozzle 16 can be better spout urea aqueous solution and tail gas mixed reaction, partly urea aqueous solution granule is attached to exhaust net 13 surface, thereby tail gas reacts rather than taking place when passing through, slide rail 17 is used for driving nozzle 16 round trip movement, thereby nozzle 16 spouts urea aqueous solution on exhaust net 13 with the state of spraying.
Preferably, the subassembly of admitting air includes the casing of admitting air 1, admit air flange 2 and first fixing bolt 3, 1 one end fixedly connected with of the casing of admitting air flange 2, through 3 fixed connection of three first fixing bolt between flange 2 and the 4 one ends of catalytic reaction pipe, three first fixing bolt 3 all arrays on the flange 2 of admitting air, the casing of admitting air 1 is used for connecting the diesel engine, the flange 2 of admitting air is used for being connected the casing 1 of admitting air and catalytic reaction pipe 4, first fixing bolt 3 is used for locking the flange 2 of admitting air.
Preferably, the exhaust subassembly includes the casing 5 of giving vent to anger, give vent to anger flange 6 and second fixing bolt 7, 5 one end of the casing of giving vent to anger and the flange 6 fixed connection of giving vent to anger, give vent to anger through three second fixing bolt 7 fixed connection between flange 6 and the catalytic reaction pipe 4, three second fixing bolt 7 all arrays on the flange 6 of giving vent to anger, the casing 5 of giving vent to anger is used for discharging the tail gas that purifies the completion, the flange 6 of giving vent to anger is used for connecting the casing 5 of giving vent to anger and catalytic reaction pipe 4, second fixing bolt 7 is used for locking the flange 2 of admitting air.
Preferably, the outer shell 9, the heat insulating and sound deadening material 10, the inner shell 8, and the catalytic reaction tube 4 are arranged in this order from the outside to the inside.
Preferably, the outer wall of the conical cylinder 12 is fixedly connected with a connecting hoop 11, the connecting hoop 11 is fixedly connected to the inner wall of the catalytic reaction tube 4, and the connecting hoop 11 is used for fixing the conical cylinder 12 to the inner wall of the catalytic reaction tube 4.
Preferably, a nozzle holder 15 is fixedly connected to the inner wall of the mounting ring 14, the inner wall of the nozzle holder 15 is fixedly connected to the nozzle 16, and the nozzle holder 15 is used for connecting and fixing the nozzle 16 to the mounting ring 14.
The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A marine diesel engine exhaust purification silencer which characterized in that: the device comprises a catalytic reaction tube (4), wherein a silencing component is fixedly arranged outside the catalytic reaction tube (4); an air inlet assembly and an exhaust assembly are respectively and fixedly arranged at two ends of the catalytic reaction tube (4), and a purification assembly is fixedly arranged at one end, close to the exhaust assembly, in the catalytic reaction tube (4);
the silencing assembly comprises an inner shell (8), an outer shell (9) and a heat-insulating silencing material (10), wherein the inner shell (8) is fixedly connected with the catalytic reaction tube (4), a gap is formed between the inner shell and the catalytic reaction tube, and the inner shell (8) is fixedly connected with the outer shell (9) through the heat-insulating silencing material (10);
the purification assembly comprises a conical cylinder (12), an exhaust net (13), a mounting ring (14), a nozzle (16) and a sliding rail (17), the conical cylinder (12) is arranged inside the catalytic reaction tube (4) and close to the exhaust assembly, and the exhaust net (13) is fixedly connected inside the conical cylinder (12); the relative both sides of catalytic reaction pipe (4) inner wall are fixedly connected with slide rail (17) respectively, two slide rail (17) all with collar (14) swing joint, collar (14) inside is provided with slide rail (17).
2. The exhaust purification silencer of the marine diesel engine according to claim 1, wherein the intake assembly comprises an intake housing (1), an intake flange (2) and first fixing bolts (3), the intake flange (2) is fixedly connected to one end of the intake housing (1), the intake flange (2) is fixedly connected to one end of the catalytic reaction tube (4) through three first fixing bolts (3), and the three first fixing bolts (3) are arranged on the intake flange (2) in an array manner.
3. The exhaust purification silencer of the marine diesel engine according to claim 2, wherein the exhaust assembly comprises an exhaust shell (5), an exhaust flange (6) and second fixing bolts (7), one end of the exhaust shell (5) is fixedly connected with the exhaust flange (6), the exhaust flange (6) is fixedly connected with the catalytic reaction tube (4) through three second fixing bolts (7), and the three second fixing bolts (7) are arrayed on the exhaust flange (6).
4. The exhaust purification muffler of the marine diesel engine according to claim 3, wherein the outer shell (9), the heat insulating and sound deadening material (10), the inner shell (8) and the catalytic reaction tube (4) are arranged in sequence from outside to inside.
5. The exhaust purification silencer of the marine diesel engine according to claim 4, wherein the outer wall of the conical cylinder (12) is fixedly connected with a connecting hoop (11), and the connecting hoop (11) is fixedly connected to the inner wall of the catalytic reaction tube (4).
6. The exhaust purification silencer of the marine diesel engine according to claim 5, wherein a nozzle holder (15) is fixedly connected to the inner wall of the mounting ring (14), and the inner wall of the nozzle holder (15) is fixedly connected with the nozzle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249534.4U CN217681928U (en) | 2022-05-24 | 2022-05-24 | Exhaust purification silencer of marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249534.4U CN217681928U (en) | 2022-05-24 | 2022-05-24 | Exhaust purification silencer of marine diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217681928U true CN217681928U (en) | 2022-10-28 |
Family
ID=83740530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221249534.4U Active CN217681928U (en) | 2022-05-24 | 2022-05-24 | Exhaust purification silencer of marine diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217681928U (en) |
-
2022
- 2022-05-24 CN CN202221249534.4U patent/CN217681928U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240812 Address after: No. 77-28 Xincheng Road, Daqiao Town, Jiangdu District, Yangzhou City, Jiangsu Province, China 225000 Patentee after: Yangzhou Xiangyuan Shipbuilding Engineering Co.,Ltd. Country or region after: China Address before: Lijia Village, Dalianwan Town, Ganjingzi District, Dalian City, Liaoning Province 116000 Patentee before: Dalian Yongyue Ship Engineering Co.,Ltd. Country or region before: China |