CN217950496U - Engine aftertreatment system, exhaust system and working machine - Google Patents
Engine aftertreatment system, exhaust system and working machine Download PDFInfo
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- CN217950496U CN217950496U CN202222181848.1U CN202222181848U CN217950496U CN 217950496 U CN217950496 U CN 217950496U CN 202222181848 U CN202222181848 U CN 202222181848U CN 217950496 U CN217950496 U CN 217950496U
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Abstract
The utility model relates to a tail gas treatment field provides an engine aftertreatment system, exhaust system and operation machinery, include main trachea and set gradually particle trapper, first deashing pipe subassembly and the first stop valve on main trachea to the exhaust end direction by main tracheal inlet end. When in ash removal, the engine post-treatment system is separated from the exhaust pipe, the first stop valve is closed, and then the air outlet of the ash removal device is communicated with the first ash removal pipe assembly. Flowing gas provided by the ash removal equipment enters through the first ash removal pipe assembly and is discharged through the air inlet end of the main air pipe, and when the flowing gas passes through the particle catcher, ash in the particle catcher is burnt out and blown out, so that the ash removal effect of the particle catcher is realized without being dismantled. The utility model provides an engine aftertreatment system need not to pull down the particle trapper alone during the deashing, still can prevent that the ash content from being blown in by flowing gas in being located other equipment of first stop valve low reaches.
Description
Technical Field
The utility model relates to a tail gas treatment technical field especially relates to an engine aftertreatment system, exhaust system and operation machinery.
Background
With the increasing pollution, the emission standard of the engine of the engineering machinery is upgraded. In order for an engine to meet emission standards, an aftertreatment system may be added to the exhaust system.
During operation, the engine generates a certain amount of ash, which accumulates on the DPF (Particulate Filter) in the aftertreatment system. When ash accumulates to some extent, the resistance of the DPF rises sharply, affecting the daily use of the engine. Therefore, the DPF needs to be removed from the entire aftertreatment system at intervals for ash removal.
At present, most of engineering machinery post-processing systems design the DPF into a detachable part, when ash content is accumulated to a certain degree, the DPF is detached and placed in an ash removal device for ash removal, the ash removal method consumes a long time, the attendance rate of a machine is influenced, and the DPF is made into a detachable structure in the post-processing systems, so that the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides an engine aftertreatment system, exhaust system and operation machinery for solve among the prior art DPF need dismantle the back and carry out the deashing that the deashing leads to for a long time and the defect that detachable DPF manufacturing cost is high, realize exempting from to tear open the effect that DPF carried out the deashing.
The utility model provides an engine aftertreatment system, include: the air inlet end of the main air pipe is communicated with an exhaust pipe of the engine; a particle trap disposed on the main gas pipe; one end of the first ash removal pipe assembly is connected with the main gas pipe, and the connection position is positioned at the downstream position of the particle catcher; the first stop valve is arranged on the main gas pipe and is positioned at the downstream position of the connecting position of the first ash cleaning pipe component and the main gas pipe.
According to the utility model provides an engine aftertreatment system still includes: one end of the second ash removal pipe assembly is connected with the main gas pipe, and the connection position is located at the upstream position of the particle catcher; and the second stop valve is arranged on the main air pipe and is positioned at the upstream position of the connecting position of the second ash cleaning pipe component and the main air pipe.
According to the utility model provides an engine aftertreatment system, first deashing pipe subassembly with second deashing pipe subassembly all includes deashing trachea and shutoff piece.
According to the utility model provides an engine aftertreatment system, the shutoff piece is the shrouding, the shrouding with the tracheal mouth of pipe of deashing can be dismantled and the connection.
According to the utility model provides an engine aftertreatment system, the shutoff piece is the valve, the valve is connected on the deashing trachea.
According to the utility model provides an engine aftertreatment system still includes oxidation type catalytic converter, oxidation type catalytic converter sets up on the main trachea, and is located the upstream position of particle catcher.
According to the utility model provides an engine aftertreatment system, oxidation type catalytic converter with the integrated setting of particle trapper.
According to the utility model provides an engine aftertreatment system still includes the SCR system, the SCR system sets up on the main gas pipe, just the SCR system is located the low reaches position of first stop valve.
The utility model discloses still provide an exhaust system, include as above arbitrary any engine aftertreatment system.
The utility model discloses still provide a working machine, include as above any one the engine after-treatment system or as above exhaust system.
The utility model provides an engine aftertreatment system, including main trachea, particle trapper, first deashing pipe assembly and first stop valve. The particle catcher and the first stop valve are arranged on the main air pipe, and the first ash cleaning pipe component is communicated with the main air pipe. The first soot cleaning tube assembly is disposed downstream of the particle trap and the first shut-off valve is disposed downstream of the first soot cleaning tube assembly. When the particle catcher needs to be cleaned, the engine aftertreatment system is detached from the exhaust pipe, the first stop valve is closed, and then the air outlet of the dust cleaning equipment is communicated with the first dust cleaning pipe assembly. When the ash removing device works, flowing gas enters the main gas pipe through the first ash removing pipe component, then passes through the particle catcher and finally is discharged through the upstream end of the main gas pipe. When flowing gas passes through the particle catcher, flowing gas burns off and blows off ash in the particle catcher, and due to the arrangement of the first ash removal pipe assembly, the particle catcher does not need to be detached independently during ash removal, so that the effect of detaching-free ash removal of the particle catcher is realized, and meanwhile, the first stop valve can prevent the ash from being blown into other equipment at the downstream of the main gas pipe by flowing gas.
The utility model provides an engine aftertreatment system still includes second deashing pipe assembly and second stop valve, the one end and the main gas piping connection of second deashing pipe assembly, and hookup location is located the upstream position of particle trapper. The second stop valve is arranged on the main gas pipe and is positioned at the upstream position of the connecting position of the second ash removing pipe component and the main gas pipe. During the deashing, close the second stop valve, with the return air inlet and the second deashing pipe assembly intercommunication of deashing equipment, because the second stop valve is closed, flowing gas only can be discharged through the second deashing pipe assembly, can not flow back in the engine through main air line. Therefore, the first stop valve and the second stop valve can seal the main air pipe between the first stop valve and the second stop valve into independent areas, and the ash removal operation can be directly carried out on the particle catcher under the condition that an engine aftertreatment system is not detached, so that the operation flow is further reduced, and the ash removal efficiency is improved.
Further, the present invention provides an exhaust system and a working machine, which have the same advantages as described above, because the exhaust system and the working machine have the engine aftertreatment system described above.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a first schematic diagram of an engine aftertreatment system provided by the present disclosure;
FIG. 2 is a schematic structural diagram II of an engine aftertreatment system provided by the present invention;
reference numerals are as follows:
100: a main air pipe; 200: a particle trap; 300: a first soot cleaning tube assembly; 310: a dust removal air pipe; 320: a flange plate; 330: a flange; 400: a first shut-off valve; 500: a second soot cleaning tube assembly; 600: a second stop valve; 700: an oxidation-type catalytic converter; 800: an SCR system.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The engine aftertreatment system, the exhaust system and the work machine of the present invention will be described with reference to fig. 1 and 2.
The utility model provides an engine aftertreatment system, including main trachea 100, particle trap 200, first deashing pipe subassembly 300 and first stop valve 400.
The air inlet end of the main air pipe 100 is used for communicating with an exhaust pipe of an engine, and the particle catcher 200 is arranged on the main air pipe 100 and is located at a position of the main air pipe 100 close to the engine. When the engine aftertreatment system is in normal operation, the flow direction of the exhaust gas is taken as a reference, the position close to the air inlet end of the main air pipe 100 is an upstream position, and the position close to the exhaust end of the main air pipe 100 is a downstream position.
One end of the first ash removal pipe assembly 300 is communicated with the inside of the main air pipe 100, and the other end is used for being connected with an air outlet of an ash removal device. The first soot cleaning tube assembly 300 is disposed at a location downstream of the particle trap 200.
A first shutoff valve 400 is disposed on the main gas pipe 100 at a location downstream of the first soot cleaning pipe assembly 300. When the first shutoff valve 400 is opened, the particle trap 200 is communicated with the exhaust end of the main air duct 100, and when the first shutoff valve 400 is closed, the communication between the particle trap 200 and the exhaust end of the main air duct 100 is blocked.
When ash is cleaned, the engine after-treatment system is firstly separated from the exhaust pipe of the engine, then the first stop valve 400 is closed, and then the air outlet of the ash cleaning device is communicated with the first ash cleaning pipe assembly 300.
The ash removal device is activated and provides a flowing gas at a sufficient pressure and temperature that enters the main gas duct 100 through the first ash removal tube assembly 300, then passes through the particle trap 200, and finally exits through the inlet end of the main gas duct 100.
In the process that the flowing gas passes through the particle catcher 200, the flowing gas burns off the ash in the particle catcher 200 and blows out, and the effect of online dust cleaning of the particle catcher 200 is achieved.
The utility model provides an engine aftertreatment system owing to set up first deashing pipe subassembly 300, can carry out the deashing to particle trap 200 under the condition that need not to dismantle particle trap 200 alone. Furthermore, the first stop valve 400 is provided to ensure that ash does not move downstream along the main gas pipe 100 into other equipment during ash removal.
In addition, because the effect of removing ash without disassembling the particle catcher 200 is realized, the particle catcher 200 can be directly integrated with the main air pipe 100 without being designed into a detachable structure, and the production cost is saved.
In an embodiment of the present invention, the main gas pipe 100 is further provided with a second ash removal pipe assembly 500 and a second stop valve 600, one end of the second ash removal pipe assembly 500 is communicated with the inside of the main gas pipe 100, and the other end is used for being connected with the air return opening of the ash removal device. The second soot cleaning tube assembly 500 is disposed at a location upstream of the particle trap 200.
The second shut-off valve 600 is disposed on the main gas pipe 100 at a position upstream of the second soot cleaning pipe assembly 500. When the second cutoff valve 600 is opened, the main gas duct 100 between the particle trap 200 and the exhaust pipe is open, and when the second cutoff valve 600 is closed, the main gas duct 100 between the particle trap 200 and the exhaust pipe is closed.
The utility model provides an engine aftertreatment system owing to add second deashing pipe assembly 500 and second stop valve 600, during the deashing, can need not to pull down engine aftertreatment system from the blast pipe, directly closes second stop valve 600, with the return air inlet and the 500 intercommunication of second deashing pipe assembly of deashing equipment, utilizes the 500 return air of second deashing pipe assembly, realizes carrying out the effect of online deashing to particle trapper 200. The second stop valve 600 can ensure that ash will not enter the engine during the ash cleaning process.
In one embodiment of the present invention, the first ash removal pipe assembly 300 and the second ash removal pipe assembly 500 are required to be kept in a blocking state during the operation of the engine and in a conducting state during the ash removal process.
Thus, the first and second soot cleaning tube assemblies 300 and 500 described above may each include a soot cleaning gas tube 310 and a closure for closing and opening the soot cleaning gas tube 310.
When the ash is not needed to be cleaned, the state that the plugging piece seals the ash cleaning air pipe 310 is kept, so that the engine post-treatment system can work normally, and when the ash is needed to be cleaned, the sealing state of the plugging piece is removed, so that the ash cleaning air pipe 310 is conducted, and the ash cleaning operation can be carried out after the ash cleaning air pipe is connected with an ash cleaning device.
In a further embodiment, the blocking member may be a sealing plate, a flange 330 may be disposed at an end of the soot cleaning air pipe 310 away from the main air pipe 100, the sealing plate may be a flange 320, and bolts and nuts may be used to connect the flange 320 and the flange 330, so as to complete blocking of the soot cleaning air pipe 310. Flanges matched with the flanges 330 on the dust cleaning air pipe 310 can be arranged at the air outlet and the air return inlet of the dust cleaning equipment, and when the dust cleaning equipment is connected, the flanges 330 of the dust cleaning air pipe and the dust cleaning air pipe can be connected by using bolts and nuts.
Alternatively, the plugging member of the first ash removal pipe assembly 300 may be a check valve, and the communication direction of the check valve faces to the inside of the main gas pipe 100. In this way, when the engine aftertreatment system is working normally, the exhaust in the main gas pipe 100 will not be exhausted through the check valve. When the dust removing pipe assembly 300 is connected with a dust removing device for removing dust, the dust removing air pipe 310 of the first dust removing pipe assembly 300 is used for air inlet, and flowing air provided by the dust removing device can push the one-way valve open to supply air to the main air pipe 100.
Alternatively, the blocking member may be a valve, such as a ball valve, a flat gate valve, a plug valve, or the like. When the engine aftertreatment system needs to work normally, the valve is closed to prevent tail gas from being discharged through the ash removal air pipe 310, and when the particle catcher 200 needs to be subjected to ash removal, the valve is opened to enable flowing gas provided by the ash removal device to pass through.
In an embodiment of the present invention, the engine post-treatment system further includes an Oxidation-type catalytic converter 700, and the Oxidation-type catalytic converter 700 is a DOC (Diesel Oxidation Catalyst) for short, and is a device installed in an engine exhaust line, and through Oxidation reaction, carbon monoxide and hydrocarbon in the engine exhaust are converted into harmless water and carbon dioxide.
The oxidation catalytic converter 700 is disposed on the main gas pipe 100 and may be located between the particle trap 200 and the second soot cleaning pipe assembly 500. In this way, when performing soot cleaning, soot cleaning can be performed simultaneously for the particle trap 200 and the oxidation-type catalytic converter 700.
Because the utility model provides an engine aftertreatment system need not to dismantle particle trapper 200 when the deashing, consequently, can be integrated on main gas pipe 100 with it. Further, the oxidation-type catalytic converter 700 may be integrated with the particle trap 200, which may reduce the size of the engine aftertreatment system and may save the production cost.
In an embodiment of the present invention, the above-mentioned engine post-treatment system further includes an SCR system 800, the SCR system 800 is disposed at a downstream position of the first stop valve 400, and Selective Catalytic Reduction (SCR) is a treatment process for nitrogen oxides in exhaust emission of the diesel vehicle, that is, under the action of a catalyst, ammonia or urea is sprayed as a reducing agent to reduce nitrogen oxides in the exhaust into nitrogen and water.
The utility model discloses still provide an exhaust system, be connected on exhaust system's the blast pipe as above engine aftertreatment system owing to have as above engine aftertreatment system, consequently, have with as above the same advantage.
The present invention also provides a work machine, which may be but not limited to a crane, an excavator, etc., having the engine aftertreatment system or the exhaust system as described above, and therefore having the same advantages as described above.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. An engine aftertreatment system, comprising:
the main air pipe (100), wherein the air inlet end of the main air pipe (100) is used for being communicated with an exhaust pipe of an engine;
a particle trap (200), the particle trap (200) disposed on the main gas pipe (100);
a first soot cleaning pipe assembly (300), wherein one end of the first soot cleaning pipe assembly (300) is connected with the main gas pipe (100) at a position downstream of the particle catcher (200);
a first shut-off valve (400), the first shut-off valve (400) being disposed on the main gas pipe (100), and the first shut-off valve (400) being located downstream of a connection location of the first soot cleaning pipe assembly (300) and the main gas pipe (100).
2. The engine aftertreatment system of claim 1, further comprising:
a second soot cleaning pipe assembly (500), wherein one end of the second soot cleaning pipe assembly (500) is connected with the main gas pipe (100) at the upstream position of the particle catcher (200);
the second stop valve (600), the second stop valve (600) is arranged on the main gas pipe (100), and the second stop valve (600) is located at the upstream position of the connection position of the second ash removal pipe assembly (500) and the main gas pipe (100).
3. The engine aftertreatment system of claim 2, wherein the first ash removal tube assembly (300) and the second ash removal tube assembly (500) each include an ash removal air tube (310) and a plug.
4. The engine aftertreatment system of claim 3, wherein the plug is a sealing plate that is removably attached to the orifice of the ash removal air tube (310).
5. The engine aftertreatment system of claim 3, wherein the closure member is a valve, the valve being connected to the ash removal air pipe (310).
6. The engine aftertreatment system according to any one of claims 1-5, further comprising an oxidation-type catalytic converter (700), the oxidation-type catalytic converter (700) being disposed on the main air pipe (100) at a position upstream of the particle trap (200).
7. The engine aftertreatment system of claim 6, wherein the oxidation-type catalytic converter (700) is disposed integrally with the particulate trap (200).
8. The engine aftertreatment system of claim 6, further comprising an SCR system (800), the SCR system (800) being disposed on the main gas pipe (100), and the SCR system (800) being located downstream of the first shut-off valve (400).
9. An exhaust system comprising an engine aftertreatment system according to any one of claims 1 to 8.
10. A work machine comprising an engine aftertreatment system according to any one of claims 1 to 8 or an exhaust system according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222181848.1U CN217950496U (en) | 2022-08-18 | 2022-08-18 | Engine aftertreatment system, exhaust system and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222181848.1U CN217950496U (en) | 2022-08-18 | 2022-08-18 | Engine aftertreatment system, exhaust system and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217950496U true CN217950496U (en) | 2022-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222181848.1U Active CN217950496U (en) | 2022-08-18 | 2022-08-18 | Engine aftertreatment system, exhaust system and working machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217950496U (en) |
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2022
- 2022-08-18 CN CN202222181848.1U patent/CN217950496U/en active Active
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