CN213298079U - Be applied to exhaust aftertreatment system's insulation construction - Google Patents
Be applied to exhaust aftertreatment system's insulation construction Download PDFInfo
- Publication number
- CN213298079U CN213298079U CN202022340924.XU CN202022340924U CN213298079U CN 213298079 U CN213298079 U CN 213298079U CN 202022340924 U CN202022340924 U CN 202022340924U CN 213298079 U CN213298079 U CN 213298079U
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- wall layer
- exhaust
- thermocouple
- aftertreatment
- post
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Abstract
The utility model discloses a be applied to exhaust aftertreatment system's insulation construction, including the aftertreatment ware, the blast pipe is installed to the top side of aftertreatment ware, and the outlet duct is installed to the end side of aftertreatment ware, and the initiating terminal of blast pipe and the gas vent intercommunication of engine, aftertreatment ware comprise outer wall layer, interior wall layer bilayer structure, and be provided with the insulation material layer in the space between outer wall layer and the interior wall layer, first thermocouple is installed to the import department of aftertreatment ware, and the second thermocouple is installed in the exit of aftertreatment ware, and 3 third thermocouples are installed respectively to the outer wall layer and the same position of interior wall layer surface of aftertreatment ware. The utility model can reduce the heat loss of exhaust, improve the exhaust temperature, ensure the catalytic efficiency of the post-treatment catalyst, and is beneficial to reducing the exhaust emission; the exhaust energy is reduced, the temperature of the surface of the post processor is reduced, and people are prevented from being scalded when touching the post processor and parts near the post processor are damaged by high temperature.
Description
Technical Field
The utility model relates to a heat preservation structure, especially a be applied to tail gas aftertreatment system's heat preservation structure.
Background
The heat insulation structure is widely applied to modern material structures, the existing heat insulation structure applied to exhaust aftertreatment is generally in a direct coating type, the existing heat insulation structure in the direct coating type hardly protects the heat insulation material, the heat insulation material is not easy to fix, the durability and the heat insulation effect are reduced, and the heat insulation material is easy to damage and fall off to lose the required effect along with the prolonging of the service time; therefore, in order to meet the use condition, the requirement on the durability of the heat-insulating material can be improved, and a better material is selected, so that the cost of the heat-insulating material is increased, in addition, the heat-insulating material is not beautiful when being exposed outside, and the heat-insulating material is generally a fiber material and can pollute the human body and the environment. Therefore, the utility model provides a post processor bilayer structure's heat preservation form can wrap up the insulation material layer among bilayer structure, and structural design integration need not the secondary and fixes, has improved the durability and the feature of environmental protection of structure.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a be applied to exhaust aftertreatment system's insulation construction.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a be applied to exhaust aftertreatment system's insulation construction, includes the aftertreatment ware, the blast pipe is installed to the top side of aftertreatment ware, the outlet duct is installed to the end side of aftertreatment ware, the initiating terminal of blast pipe and the gas vent intercommunication of engine, the aftertreatment ware comprises outer wall layer, interior wall layer bilayer structure, and be provided with the insulation material layer in the space between outer wall layer and the interior wall layer, first thermocouple is installed in the import department of aftertreatment ware, the second thermocouple is installed in the exit of aftertreatment ware, 3 third thermocouples are installed respectively to the outer wall layer and the same position of interior wall layer surface of aftertreatment ware.
Furthermore, the first thermocouple, the second thermocouple and the third thermocouple are respectively connected with a collecting device through connecting wires, and thermocouple signals are further collected and analyzed through the collecting device.
Furthermore, the outer wall layer and the inner wall layer of the post-processor and the heat insulation material layer between the outer wall layer and the inner wall layer are designed into an integrated structure without secondary fixation.
Furthermore, the exhaust pipe, the air outlet pipe and the post-processor are detachably connected.
Further, the method for testing the heat insulation effect of the heat insulation structure applied to the tail gas aftertreatment system comprises the following steps:
the method I comprises the steps of enabling the exhaust temperature of tail gas to be 450 ℃ and the flow rate of waste gas to be 1000kg/h through adjusting the using working condition of an engine, stabilizing for 30min, and then starting to calculate the temperature change; and calculating the temperature drop according to the measured values of the thermocouples before and after the post-processor, wherein the temperature drop is the temperature before the post-processor-the temperature after the post-processor, the temperature drop change is the temperature drop of the heat insulation material-the temperature drop without the heat insulation material/the temperature drop without the heat insulation material, and if the heat insulation material is added, the temperature drop is reduced by 20-50%, so that the temperature drop of the heat insulation material meets the requirement.
Adjusting the use condition of the engine to ensure that the exhaust temperature of the tail gas is 450 ℃, the flow rate of the waste gas is 1000kg/h, the tail gas is stabilized for 30min, and then calculating the change of the temperature; and judging the heat preservation effect according to the measured value of the thermocouple on the surface of the post processor, calculating the temperature change of the heat preservation material, namely the temperature of the heat preservation material, the temperature without the heat preservation material and the temperature without the heat preservation material at each position, and then averaging the temperature changes at the three positions. If the temperature changes by 20-50% after the heat-insulating material is added, the heat insulation of the heat-insulating material meets the requirement; if both the temperature drop and the surface temperature change meet 20% -50%, the heat-insulating material can be used as a heat-insulating material of a post-processor.
Compared with the prior art, the utility model discloses beneficial effect technical effect below having:
the utility model provides a heat preservation structure applied to a tail gas post-treatment system, which can reduce the heat loss of exhaust, improve the exhaust temperature, ensure the catalytic efficiency of a post-treatment catalyst and be beneficial to reducing the tail gas emission; the exhaust energy is reduced, the temperature of the surface of the post processor is reduced, and people are prevented from being scalded when touching the post processor and parts near the post processor are damaged by high temperature.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a partial schematic view of the present invention;
fig. 2 is a schematic view of the whole application of the present invention.
In the figure, 1, an engine, 2, an exhaust pipe, 3, a post processor, 3-1, an outer wall layer, 3-2, a heat insulation material layer, 3-3, an inner wall layer, 4, a collecting device, 5, a first thermocouple, 6, a second thermocouple, 7, a third thermocouple, 8, an exhaust pipe and 9 are connected with a lead.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
The utility model provides a be applied to exhaust aftertreatment system's insulation construction, includes aftertreatment ware 3, blast pipe 2 is installed to the top side of aftertreatment ware 3, outlet duct 8 is installed to the end side of aftertreatment ware 3, the initiating terminal of blast pipe 2 and the gas vent intercommunication of engine 1, aftertreatment ware 3 comprises outer wall layer 3-1, interior wall layer 3-3 bilayer structure, and be provided with insulation material layer 3-2 in the space between outer wall layer 3-1 and the interior wall layer 3-3, first thermocouple 5 is installed to the import department of aftertreatment ware 3, second thermocouple 6 is installed in the exit of aftertreatment ware 3, 3 third thermocouples 7 are installed respectively to the same position in outer wall layer 3-1 and interior wall layer 3-3 surface of aftertreatment ware 3.
Further, the first thermocouple 5, the second thermocouple 6 and the third thermocouple 7 are respectively connected with the acquisition device 4 through connecting wires 9, and thermocouple signals are further acquired and analyzed through the acquisition device 4.
Further, the outer wall layer 3-1 and the inner wall layer 3-3 of the post-processor 3, and the heat insulation material layer 3-2 between the outer wall layer 3-1 and the inner wall layer 3-3 are of an integrated structure.
Furthermore, the exhaust pipe 2, the air outlet pipe 8 and the post-processor 3 are detachably connected.
The heat preservation effect test method applied to the heat preservation structure of the tail gas aftertreatment system comprises the following steps:
(1) the exhaust temperature of tail gas is adjusted to be 450 ℃ by adjusting the using working condition of the engine, the flow rate of the waste gas is 1000kg/h, the tail gas is stabilized for 30min, and then the temperature change is calculated; and calculating the temperature drop according to the measured values of the thermocouples before and after the post-processor, wherein the temperature drop is the temperature before the post-processor-the temperature after the post-processor, and the temperature drop change is the temperature drop of the heat insulation material (the temperature drop of the heat insulation material-the temperature drop without the heat insulation material)/the temperature drop without the heat insulation material, and if the heat insulation material is added, the temperature drop is reduced by 20-50%, so that the temperature drop of the heat insulation material meets the requirement.
(2) Judging the heat preservation effect according to the measured value of the thermocouple on the surface of the post processor, calculating the temperature change (the temperature of the heat preservation material-the temperature without the heat preservation material)/the temperature without the heat preservation material at each position, and then averaging the temperature changes at the three positions; if the surface temperature changes by 20-50% after the heat-insulating material is added, the heat-insulating property of the heat-insulating material meets the requirement.
(3) The temperature drop in the step (1) and the surface temperature change in the step (2) both meet 20% -50%, and then the heat-insulating material can be used as a heat-insulating material of a post-processor.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (4)
1. The utility model provides a be applied to exhaust aftertreatment system's insulation construction, includes aftertreatment ware (3), its characterized in that: an exhaust pipe (2) is arranged at the starting end side of the post-processor (3), an air outlet pipe (8) is arranged at the tail end side of the post-processor (3), the starting end of the exhaust pipe (2) is communicated with an exhaust port of the engine (1), the postprocessor (3) is composed of an outer wall layer (3-1) and an inner wall layer (3-3) in a double-layer structure, and a heat insulation material layer (3-2) is arranged in the space between the outer wall layer (3-1) and the inner wall layer (3-3), a first thermocouple (5) is arranged at the inlet of the postprocessor (3), a second thermocouple (6) is arranged at the outlet of the post-processor (3), and 3 third thermocouples (7) are respectively arranged at the same positions on the surfaces of the outer wall layer (3-1) and the inner wall layer (3-3) of the post-processor (3).
2. The insulation structure applied to the exhaust gas after-treatment system according to claim 1, wherein the first thermocouple (5), the second thermocouple (6) and the third thermocouple (7) are respectively connected with the collection device (4) through connecting wires (9).
3. The insulation structure applied to the exhaust gas after-treatment system according to claim 1, wherein the outer wall layer (3-1) and the inner wall layer (3-3) of the after-treatment device (3) and the insulation material layer (3-2) between the outer wall layer (3-1) and the inner wall layer (3-3) are of an integral structure.
4. The heat insulation structure applied to the exhaust gas aftertreatment system according to claim 1, wherein the exhaust pipe (2), the air outlet pipe (8) and the aftertreatment device (3) are detachably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022340924.XU CN213298079U (en) | 2020-10-20 | 2020-10-20 | Be applied to exhaust aftertreatment system's insulation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022340924.XU CN213298079U (en) | 2020-10-20 | 2020-10-20 | Be applied to exhaust aftertreatment system's insulation construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213298079U true CN213298079U (en) | 2021-05-28 |
Family
ID=76013770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022340924.XU Expired - Fee Related CN213298079U (en) | 2020-10-20 | 2020-10-20 | Be applied to exhaust aftertreatment system's insulation construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298079U (en) |
-
2020
- 2020-10-20 CN CN202022340924.XU patent/CN213298079U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210528 Termination date: 20211020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |