CN113915033B - Heavy EGR cooler with damping structure - Google Patents
Heavy EGR cooler with damping structure Download PDFInfo
- Publication number
- CN113915033B CN113915033B CN202111341511.6A CN202111341511A CN113915033B CN 113915033 B CN113915033 B CN 113915033B CN 202111341511 A CN202111341511 A CN 202111341511A CN 113915033 B CN113915033 B CN 113915033B
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- damping
- heat exchange
- damping structure
- egr cooler
- piece
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- 238000013016 damping Methods 0.000 title claims abstract description 130
- 238000009792 diffusion process Methods 0.000 claims abstract description 36
- 230000000903 blocking effect Effects 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 230000002238 attenuated effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008602 contraction Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A diffusion piece is connected with a heat exchange tube through a tube plate, and a corrugated tube is arranged between the diffusion piece and a blocking ring; the periphery of the corrugated pipe is provided with a first damping piece serving as a first damping structure; the first damping piece is provided with a thick opening end and a thin opening end, the thick opening end is connected with the blocking ring, and the thin opening end is sleeved on the periphery of the diffusion piece; a second damping structure is arranged between the heat exchange tube and the inner wall of the shell, the second damping structure comprises a supporting sheet or a second damping piece, the supporting sheet is connected with the heat exchange tube, the second damping piece is connected with the supporting sheet, and the second damping piece is contacted with the inner wall of the shell. In the invention, from the consideration of improving the reliability of the EGR cooler, the first damping structure and the second damping structure do work for overcoming resistance in the vibration process, and consume the energy brought by initial vibration, so that the amplitude is continuously attenuated; the vibration resistance of the corrugated pipe and the heat exchange core body is improved by reducing the amplitude, and the reliability of the whole EGR cooler is improved.
Description
Technical Field
The invention relates to a heavy EGR cooler with a damping structure, and belongs to the technical field of engines.
Background
The EGR cooling system can reduce the emission of automobile exhaust NO x, and a small amount of waste gas is reintroduced into the intake valve at a higher speed of the automobile, so that the waste gas recycling is realized. The temperature of the exhaust gas relates to the NO x emission, and the lower the temperature of the exhaust gas, the better the NO x inhibition of the engine. The EGR cooler can reduce the temperature of the exhaust gases entering the cylinders, which is beneficial to the engine heat load and can reduce the engine temperature. With the implementation of the related environmental protection policy, the air quality improvement has obvious effect. Nevertheless, the current situation is not optimistic, particularly in areas where PM2.5 is frequent and severe, and there are far from environmental objectives.
At present, the emphasis of emission reduction and management and control is heavy-duty diesel engines, and the EGR coolers applied to the heavy-duty diesel engines have high heat exchange performance requirements, large volume, large vibration, large thermal expansion and cold contraction stress and higher requirements on reliability; it is generally the case that bellows are used to compensate for thermal expansion and contraction deformations, which, due to their thin walls, have good compensation deformations while being poor in vibration resistance, resulting in a reduced reliability of the entire EGR cooler. Accordingly, there is a need for a heavy duty EGR cooler solution that can improve overall reliability.
Disclosure of Invention
Therefore, the invention provides the heavy-duty EGR cooler with the damping structure, and the vibration resistance of the corrugated pipe and the heat exchange core body is improved by reducing the amplitude, so that the reliability of the whole EGR cooler is improved.
In order to achieve the above object, the present invention provides the following technical solutions: the heavy EGR cooler with the damping structure comprises a shell and a heat exchange core body, wherein the heat exchange core body is arranged in the shell, a blocking ring is formed at the air inlet end of the shell, and the heat exchange core body comprises a diffusion piece, a tube plate and a heat exchange tube;
The diffusion piece is connected with the heat exchange tube through the tube plate, and a corrugated tube is arranged between the diffusion piece and the blocking ring;
The periphery of the corrugated pipe is provided with a first damping piece serving as a first damping structure; the first damping piece is provided with a thick opening end and a thin opening end, the thick opening end contacts the blocking ring, and the thin opening end is sleeved on the periphery of the diffusion piece;
The heat exchange tube is connected with the shell through a first damping piece, the heat exchange tube is connected with the shell through a second damping piece, and the shell is provided with a second damping structure.
As a preferable scheme of the heavy EGR cooler with the damping structure, one end, close to the corrugated pipe, of the diffusion piece is provided with a fixed step, and the thin opening end is sleeved on the periphery of the fixed step.
As a preferable scheme of the heavy EGR cooler with the damping structure, the heat exchange tube is communicated with the inside of the diffusion piece, and the inner diameter of the diffusion piece, which is close to one end of the corrugated tube, is smaller than the inner diameter of the diffusion piece, which is close to one end of the heat exchange tube.
As a preferred embodiment of the heavy EGR cooler with a damping structure, the first damping member is a conical spring having the thick port end and the thin port end, the thick port end contacts the blocking ring, and the thin port end is sleeved on the periphery of the diffusion member.
As a preferred embodiment of the heavy EGR cooler with a damping structure, the first damping member has a predetermined compression amount.
As a preferable mode of the heavy-duty EGR cooler having the damping structure, the end portions of the support pieces are bent in a direction away from the heat exchange tube, and the end portions of the support pieces are formed with adjustment holes;
an end of the second damping member is inserted into the adjustment hole.
As a preferred embodiment of the heavy-duty EGR cooler with a damping structure, the second damping member is a leaf spring, and the center of the second damping member has an arched curvature.
As a preferable scheme of the heavy EGR cooler with the damping structure, the second damping structure is distributed in a radial symmetrical mode on the heat exchange tube.
As a preferable scheme of the heavy-duty EGR cooler with the damping structure, at least two groups of second damping structures are arranged in the axial direction of the heat exchange tube.
As a preferred embodiment of the heavy EGR cooler with a damping structure, the second damping member has a preset adjustment distance along the heat exchange tube axis through the adjustment hole.
The invention has the following advantages: the heat exchange device is provided with a shell and a heat exchange core body, wherein the heat exchange core body is arranged in the shell, a blocking ring is formed at the air inlet end of the shell, and the heat exchange core body comprises a diffusion piece, a tube plate and a heat exchange tube; the diffusion piece is connected with the heat exchange tube through the tube plate, and a corrugated tube is arranged between the diffusion piece and the blocking ring; the periphery of the corrugated pipe is provided with a first damping piece serving as a first damping structure; the first damping piece is provided with a thick opening end and a thin opening end, the thick opening end is connected with the blocking ring, and the thin opening end is sleeved on the periphery of the diffusion piece; a second damping structure is arranged between the heat exchange tube and the inner wall of the shell, the second damping structure comprises a supporting sheet or a second damping piece, the supporting sheet is connected with the heat exchange tube, the second damping piece is connected with the supporting sheet, and the second damping piece is contacted with the inner wall of the shell. According to the invention, from the consideration of improving the reliability of the EGR cooler, the first damping structure is arranged outside the corrugated pipe, the second damping structure is additionally arranged outside the heat exchange core body, and the first damping structure and the second damping structure do work for overcoming resistance in the vibration process, so that energy brought by initial vibration is consumed, and the amplitude is continuously attenuated; the vibration resistance of the corrugated pipe and the heat exchange core body is improved by reducing the amplitude, so that the reliability of the whole EGR cooler is improved; the method is suitable for recycling the exhaust gas in the engine system, in particular to medium and heavy diesel engines and natural gas engines.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the scope of the invention.
FIG. 1 is a schematic view of a heavy duty EGR cooler having a damping structure provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of the bellows periphery structure in a heavy duty EGR cooler with damping structure provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second damping structure of a heavy duty EGR cooler with damping structure provided in an embodiment of the present invention;
fig. 4 is a schematic top view of a second damping structure of a heavy duty EGR cooler with damping structure provided in embodiments of the present invention.
In the figure, 1, a shell; 2. a heat exchange core; 3. a blocking ring; 4. a diffuser; 5. a tube sheet; 6. a heat exchange tube; 7. a bellows; 8. a first damping member; 9. a thick mouth end; 10. a thin mouth end; 11. a support sheet; 12. A second damping member; 13. the steps are fixed.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1,2, 3 and 4, the present invention provides a heavy EGR cooler with a damping structure, comprising a housing 1 and a heat exchanging core 2, wherein the heat exchanging core 2 is arranged inside the housing 1, a blocking ring 3 is formed at an air inlet end of the housing 1, and the heat exchanging core 2 comprises a diffuser 4, a tube plate 5 and a heat exchanging tube 6;
The diffusion piece 4 is connected with the heat exchange tube 6 through the tube plate 5, and a corrugated tube 7 is arranged between the diffusion piece 4 and the blocking ring 3;
the periphery of the corrugated pipe 7 is provided with a first damping piece 8 serving as a first damping structure; the first damping piece 8 is provided with a thick opening end 9 and a thin opening end 10, the thick opening end 9 contacts the blocking ring 3, and the thin opening end 10 is sleeved on the periphery of the diffusion piece 4;
A second damping structure is arranged between the heat exchange tube 6 and the inner wall of the shell 1, the second damping structure comprises a supporting sheet 11 or a second damping piece 12, the supporting sheet 11 is connected with the heat exchange tube 6, the second damping piece 12 is connected with the supporting sheet 11, and the second damping piece 12 contacts with the inner wall of the shell 1.
In the embodiment of fig. 2, a fixing step 13 is disposed at one end of the diffusion member 4 near the bellows 7, and the thin opening end 10 is sleeved on the periphery of the fixing step 13. The first damping member 8 is a conical spring, the conical spring is provided with a thick opening end 9 and a thin opening end 10, the thick opening end 9 contacts the blocking ring 3, and the thin opening end 10 is sleeved on the periphery of the diffusion member 4. The first damping member 8 has a predetermined compression amount.
Specifically, the thick end 9 and the thin end 10 of the first damping member 8 are a relative concept, and not limited to a specific thick and thin dimension, taking the example that the first damping member 8 adopts a conical spring, it is necessary to have a thick end 9 and a thin end 10, and the thick end 9 and the thin end 10 are a gradual transition process.
Specifically, the outer diameter of the fixing step 13 is determined according to the inner diameter of the thin opening end 10 of the conical spring, so that the conical spring can be tightly contacted and connected with the fixing step 13, and the effect of fixing the conical spring is achieved.
Specifically, the conical spring gives a certain compression amount during initial assembly, and because the heat exchange core 2 and the corrugated tube 7 can integrally generate forced vibration, if resonance occurs, the corrugated tube 7 can be broken, and fatigue failure of the corrugated tube 7 can also occur under long-time vibration. After the conical spring is added, in the vibration process, the conical spring can utilize the restoring force of the conical spring to prevent the displacement movement of the heat exchange core body 2, and the conical spring can shrink under the action of thermal expansion and contraction to have a certain damping force, and under the combined action of the restoring force and the damping force, the conical spring can perform damping vibration, the amplitude can be smaller and smaller, so that the vibration is in the stiffness requirement range of the corrugated pipe 7 and the heat exchange core body 2, the vibration resistance is improved, and the overall reliability of the EGR cooler is improved.
In this embodiment, the heat exchange tube 6 is conducted through the inside of the diffusion member 4, and the inner diameter of the diffusion member 4 near one end of the bellows 7 is smaller than the inner diameter of the diffusion member 4 near one end of the heat exchange tube 6.
Specifically, the diffusion member 4 belongs to the prior art, the diffusion member 4 is positioned at the air inlet end of the EGR cooler, and the inside of the diffusion member 4 is a space in a shape of a circular truncated cone, so that the diffusion effect of the exhaust gas can be achieved, and the exhaust gas enters the heat exchange tube 6 for heat exchange.
In the present embodiment, the end of the supporting plate 11 is bent away from the heat exchange tube 6, and the end of the supporting plate 11 is formed with an adjusting hole, as shown in fig. 3 and 4; the end of the second damper 12 is inserted into the adjustment hole. The second damping member 12 is a leaf spring, and the center of the second damping member 12 has an arch-shaped curvature. The second damping structures are symmetrically distributed in the radial direction of the heat exchange tube 6. At least two groups of second damping structures are arranged in the axial direction of the heat exchange tube 6. The second damping element 12 has a predetermined adjustment distance in the axial direction of the heat exchange tube 6 via the adjustment aperture.
Specifically, the second damping structure outside the heat exchange core body 2 is characterized in that a supporting plate 11 is arranged outside the heat exchange tube 6, the supporting plate 11 is welded with heat exchange, a plate spring is arranged outside the supporting plate 11, the plate spring is longitudinally designed, and two ends of the plate spring are connected with the supporting plate 11. The interference fit is adopted between the plate spring and the shell 1, the plate spring can deform under the vibration load action of the EGR cooler and extend towards two ends, the supporting piece 11 is limited by the limiting holes, the plate spring is limited to deform too much, the plate spring and the supporting piece 11 slide relatively to generate friction, certain resistance can be generated, vibration is damped, and the buffering effect can be achieved.
Specifically, the interference fit between the supporting sheet 11 and the shell 1 can transfer the force and moment of the heat exchange tube 6 to the shell 1, so as to play a role in dispersing the stress of the heat exchange core 2. Two groups of second damping structures are symmetrically designed in the circumferential direction of one EGR cooler, and two or more groups of second damping structures can be designed in the axial direction according to the length of the EGR cooler and the working condition of the engine.
Specifically, the cooperation of first damping structure and second damping structure, better realization improves bellows 7 and heat exchange core 2's anti-vibration performance through reducing the amplitude, improves the holistic reliability effect of EGR cooler.
In summary, the invention is provided with a shell 1 and a heat exchange core 2, the heat exchange core 2 is arranged in the shell 1, a blocking ring 3 is formed at the air inlet end of the shell 1, and the heat exchange core 2 comprises a diffusion member 4, a tube plate 5 and a heat exchange tube 6; the diffusion piece 4 is connected with the heat exchange tube 6 through the tube plate 5, and a corrugated tube 7 is arranged between the diffusion piece 4 and the blocking ring 3; the periphery of the corrugated pipe 7 is provided with a first damping piece 8 serving as a first damping structure; the first damping piece 8 is provided with a thick opening end 9 and a thin opening end 10, the thick opening end 9 contacts the baffle ring 3, and the thin opening end 10 is sleeved on the periphery of the diffusion piece 4; a second damping structure is arranged between the heat exchange tube 6 and the inner wall of the shell 1, the second damping structure comprises a supporting sheet 11 or a second damping piece 12, the supporting sheet 11 is connected with the heat exchange tube 6, the second damping piece 12 is connected with the supporting sheet 11, and the second damping piece 12 is contacted with the inner wall of the shell 1. The conical spring gives a certain compression amount during initial assembly, because the heat exchange core 2 and the corrugated tube 7 can integrally generate forced vibration, if resonance occurs, the corrugated tube 7 can be broken, and fatigue failure of the corrugated tube 7 can also occur under long-time vibration. After the conical spring is added, in the vibration process, the conical spring can utilize the restoring force of the conical spring to prevent the displacement movement of the heat exchange core body 2, and the conical spring can shrink under the action of thermal expansion and contraction to have a certain damping force, and under the combined action of the restoring force and the damping force, the conical spring can perform damping vibration, the amplitude can be smaller and smaller, so that the vibration is in the stiffness requirement range of the corrugated pipe 7 and the heat exchange core body 2, the vibration resistance is improved, and the overall reliability of the EGR cooler is improved. The second damping structure outside the heat exchange core body 2 is characterized in that a supporting plate 11 is arranged outside the heat exchange tube 6, the supporting plate 11 is welded with heat exchange, a plate spring is arranged outside the supporting plate 11, the plate spring is longitudinally designed, and two ends of the plate spring are connected with the supporting plate 11. The interference fit is adopted between the plate spring and the shell 1, the plate spring can deform under the vibration load action of the EGR cooler and extend towards two ends, the supporting piece 11 is limited by the limiting holes, the plate spring is limited to deform too much, the plate spring and the supporting piece 11 slide relatively to generate friction, certain resistance can be generated, vibration is damped, and the buffering effect can be achieved. The interference fit between the supporting sheet 11 and the shell 1 can transfer the force and moment of the heat exchange tube 6 to the shell 1, and the effect of dispersing the stress of the heat exchange core 2 is achieved. Two groups of second damping structures are symmetrically designed in the circumferential direction of one EGR cooler, and two or more groups of second damping structures can be designed in the axial direction according to the length of the EGR cooler and the working condition of the engine. The cooperation of first damping structure and second damping structure, better realization improves bellows 7 and heat exchange core 2's anti-vibration performance through reducing the amplitude, improves the holistic reliability effect of EGR cooler. In the invention, from the consideration of improving the reliability of the EGR cooler, the first damping structure is arranged outside the corrugated pipe 7, the second damping structure is additionally arranged outside the heat exchange core body 2, and the first damping structure and the second damping structure do work for overcoming resistance in the vibration process, so that the energy brought by initial vibration is consumed, and the amplitude is continuously attenuated; the vibration resistance of the corrugated pipe 7 and the heat exchange core body 2 is improved by reducing the amplitude, so that the reliability of the whole EGR cooler is improved; the method is suitable for recycling the exhaust gas in the engine system, in particular to medium and heavy diesel engines and natural gas engines.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (10)
1. The heavy EGR cooler with the damping structure comprises a shell (1) and a heat exchange core body (2), wherein the heat exchange core body (2) is arranged in the shell (1), and a blocking ring (3) is formed at the air inlet end of the shell (1), and the heavy EGR cooler is characterized in that the heat exchange core body (2) comprises a diffusion piece (4), a tube plate (5) and a heat exchange tube (6);
The diffusion piece (4) is connected with the heat exchange tube (6) through the tube plate (5), and a corrugated tube (7) is arranged between the diffusion piece (4) and the blocking ring (3);
The periphery of the corrugated pipe (7) is provided with a first damping piece (8) serving as a first damping structure; the first damping piece (8) is provided with a thick opening end (9) and a thin opening end (10), the thick opening end (9) contacts the blocking ring (3), and the thin opening end (10) is sleeved on the periphery of the diffusion piece (4);
The heat exchange tube is characterized in that a second damping structure is arranged between the heat exchange tube (6) and the inner wall of the shell (1), the second damping structure comprises a supporting sheet (11) or a second damping piece (12), the supporting sheet (11) is connected with the heat exchange tube (6), the second damping piece (12) is connected with the supporting sheet (11), and the second damping piece (12) is contacted with the inner wall of the shell (1).
2. A heavy duty EGR cooler with damping structure according to claim 1, characterized in that the diffuser (4) is provided with a stationary step (13) near the end of the bellows (7), the slim end (10) being fitted around the periphery of the stationary step (13).
3. A heavy duty EGR cooler with damping structure according to claim 1, characterized in that the inside of the diffuser (4) is in communication with the heat exchanger tube (6), the inside diameter of the diffuser (4) near the end of the bellows (7) being smaller than the inside diameter of the diffuser (4) near the end of the heat exchanger tube (6).
4. A heavy duty EGR cooler with damping structure according to claim 1, characterized in that the first damping element (8) is a conical spring with the thick mouth end (9) and the thin mouth end (10), the thick mouth end (9) contacting the blocking ring (3), the thin mouth end (10) being sleeved around the diffuser element (4).
5. A heavy duty EGR cooler with damping structure according to claim 4, characterized in that the first damping element (8) has a preset compression.
6. A heavy duty EGR cooler with damping structure according to claim 1, characterized in that the ends of the support plates (11) are bent away from the heat exchanger tube (6), the ends of the support plates (11) being formed with adjustment holes;
an end of the second damping member (12) is inserted into the adjustment hole.
7. A heavy duty EGR cooler with damping structure according to claim 6, characterized in that the second damping member (12) is a leaf spring, the centre of the second damping member (12) having an arched curvature.
8. A heavy duty EGR cooler with damping structure according to claim 7, characterized in that the heat exchanger tube (6) is radially symmetrically distributed with the second damping structure.
9. A heavy duty EGR cooler with a damping structure according to claim 8, characterized in that the heat exchanger tube (6) is provided with at least two sets of said second damping structures in the axial direction.
10. A heavy duty EGR cooler with damping structure according to claim 6, characterized in that the second damping element (12) has a preset adjustment distance in the axial direction of the heat exchanger tube (6) through the adjustment hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111341511.6A CN113915033B (en) | 2021-11-12 | 2021-11-12 | Heavy EGR cooler with damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111341511.6A CN113915033B (en) | 2021-11-12 | 2021-11-12 | Heavy EGR cooler with damping structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113915033A CN113915033A (en) | 2022-01-11 |
| CN113915033B true CN113915033B (en) | 2024-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111341511.6A Active CN113915033B (en) | 2021-11-12 | 2021-11-12 | Heavy EGR cooler with damping structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN113915033B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216044092U (en) * | 2021-11-12 | 2022-03-15 | 北京美联桥科技集团有限公司 | Heavy EGR cooler with damping structure |
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| CN211975216U (en) * | 2019-12-25 | 2020-11-20 | 潍柴动力股份有限公司 | EGR corrugated pipe, EGR system and engine |
| CN112325677A (en) * | 2020-11-06 | 2021-02-05 | 常德天盛电化有限公司 | Multi-flow heat exchanger |
| CN214170690U (en) * | 2020-12-11 | 2021-09-10 | 渭南美联桥汽车新技术研究院有限公司 | EGR cooler |
| CN112746914B (en) * | 2020-12-29 | 2022-07-29 | 浙江银轮机械股份有限公司 | Elastic support piece and EGR cooler |
| CN113482808B (en) * | 2021-06-30 | 2022-11-01 | 东风汽车集团股份有限公司 | EGR cooler and EGR system |
-
2021
- 2021-11-12 CN CN202111341511.6A patent/CN113915033B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216044092U (en) * | 2021-11-12 | 2022-03-15 | 北京美联桥科技集团有限公司 | Heavy EGR cooler with damping structure |
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