CN209586539U - A kind of cooler for recycled exhaust gas air inlet pipe connecting structure - Google Patents
A kind of cooler for recycled exhaust gas air inlet pipe connecting structure Download PDFInfo
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- CN209586539U CN209586539U CN201821886711.3U CN201821886711U CN209586539U CN 209586539 U CN209586539 U CN 209586539U CN 201821886711 U CN201821886711 U CN 201821886711U CN 209586539 U CN209586539 U CN 209586539U
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- flange
- cooler
- air inlet
- exhaust gas
- outlet
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Abstract
The utility model discloses a kind of cooler for recycled exhaust gas air inlet pipe connecting structures, including air inlet tube, exhausting waste gas interface and cooler interface, the first clip and the second clip；Inlet flange passes through the first clamp connection with exhaust flange and clamps, and outlet flange passes through the second clamp connection with flange of cooler and clamps.A kind of cooler for recycled exhaust gas air inlet pipe connecting structure disclosed by the utility model, it is intended to which solving existing air intake structure conventional screw flange in continuous high temperature exhaust environment leads to that gasket seal uneven heating is even, the deformation of inlet suction port flange face causes exhaust leak, the length of cooler air inlet tube flow-guiding structure too long or too short.
Description
Technical field
The utility model relates to a kind of air intake structure more particularly to a kind of cooler for recycled exhaust gas air inlet pipe connecting structures.
Background technique
Exhaust gas recycles (Exhaust gas recirculation) system abbreviation egr system.Engine passes through EGR system
The portion that burning generates is reintroduced to cylinder and participates in burning by system.Egr system is primarily to reduce the nitrogen in tail gas
The discharge of oxygen (NOX) compound.With the raising of six engine performance of state, the combustion discharge temperature of engine is constantly increased, engine
The part high-temp waste gas of burning discharge flows into cooler for recycled exhaust gas from exhaust pipe end by cooler for recycled exhaust gas air inlet tube, due to exhaust temperature
Degree is high, easily causes the joint flange face of cooler for recycled exhaust gas air inlet tube thermal deformation occur, causes exhaust leak.
In the prior art, Chinese patent CN202789203U discloses a kind of connecting tube and the EGR using the connecting tube
Gas recirculation system, including bellows, the both ends of the bellows are equipped with flange, and key is one end of the bellows
It extends to outside flange and forms flow-guiding structure.The utility model proposes the EGR exhaust recirculating system using above-mentioned connecting tube
As follows: the connecting tube is connected with the inlet manifold of engine and cooler for recycled exhaust gas or cylinder cap respectively using the flange at its both ends,
The flow-guiding structure of the connecting tube stretches in inlet manifold.The structure is by transforming as traditional connecting tube with water conservancy diversion knot
The connecting tube of structure, can carry out water conservancy diversion to the EGR exhaust for importing inlet manifold, the flow-guiding structure be bell mouth shape or sheet or
Curved surface.Flange in the prior art uses traditional flange containing two screws, seals discontinuity；And containing loudspeaker
In the flow-guiding structure of mouth shape, traditional screw flange is not easy to be coupled with the adapter tube in gas recirculation system；In lasting height
In warm exhaust environment, gasket seal uneven heating is even, easily leads to the problem of deformation of inlet suction port flange face causes exhaust leak；Often
The bellows material of rule is perishable under the condition of high temperature of six engine of state；The development length of flow-guiding structure is too long, extends tube body
Entire length, increase machine volume, it is too short, water conservancy diversion cannot be played the role of.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of cooler for recycled exhaust gas air inlet pipe connecting structure, it is intended to solve it is existing into
Depressed structure conventional screw flange in continuous high temperature exhaust environment leads to that gasket seal uneven heating is even, inlet suction port flange face becomes
Shape causes that exhaust leak, the length of cooler air inlet tube flow-guiding structure is too long or too short in six engine of state, conventional screw method
The problems such as orchid is not easy to install in horn mouth flow-guiding structure.
The utility model adopts the following technical solutions to achieve above-mentioned purpose:
A kind of cooler for recycled exhaust gas air inlet pipe connecting structure, which is characterized in that including air inlet tube, exhausting waste gas interface and cold
But device interface, the first clip and the second clip；The intake interface of air inlet tube be equipped with inlet flange, exhausting waste gas interface be equipped with
The opposite exhaust flange of inlet flange, inlet flange pass through the first clamp connection with exhaust flange and clamp；Air inlet tube goes out
Gas interface is equipped with outlet flange, and cooler interface is equipped with the flange of cooler opposite with outlet flange, outlet flange and cooler
Flange passes through the second clamp connection and clamps.This programme replaces traditional bolt flange using the first clip and the second clip,
In, first groove is equipped in the middle part of the inner ring of the first clip, exhaust flange and inlet flange engage the outer ring shape and first to be formed
Groove matches, and passes through the screw fastening clamp of the first clip outer ring, and first groove is made to clamp exhaust flange and inlet flange；
Second groove is equipped in the middle part of the inner ring of second clip, outlet flange and flange of cooler engage the outer ring shape to be formed and the second ditch
Slot matches, and passes through the screw fastening clamp of the second clip outer ring, while second groove being made to clamp outlet flange and cooler
Flange.Using the air intake structure of clamp connection, seals stress more evenly, solve the conventional bolt flange in high-temp waste gas environment
The problem of face gas leakage.
Its further technical solution is that exhaust flange center is equipped with the first bulge-structure, and inlet flange is equipped with and matches
The first groove structure；Outlet flange center is equipped with the second bulge-structure, and flange of cooler is equipped with the second groove knot matched
Structure.The damascene structures matched using protrusion and groove, can be avoided high-temp waste gas and directly wash away to gasket seal, reduce
The risk of exhaust leak.
Its further technical solution is that the depth that exhaust flange is embedded in inlet flange is 1.5~2.5mm, insert depth
Cooperation unilateral gap in range is 0.1mm~0.3mm, and the depth that outlet flange is embedded in flange of cooler is 1.5~2.5mm,
The gap in insert depth direction is 0.1mm~0.3mm.Size in this programme can be in the exhaust gas temperature for reducing by six engine of state
The size of air intake structure is reduced while influence on gasket seal.
Its further technical solution is that air inlet tube includes inlet suction port, bellows and leading positioned at bellows interior
One end of flow tube, inlet suction port is fixedly connected with inlet flange, one end connection of the inner ring of the inlet suction port other end and diversion pipe,
Outer ring is connect with the inner ring of bellows one end；The outer ring of the bellows other end is fixedly connected with outlet flange inner ring；Diversion pipe is another
Extend outlet flange in one end.Diversion pipe protrudes into cooler intake interface when installation, and it is cooling that high-temp waste gas is directly imported EGR
Device can reduce influence of the high-temp waste gas directly to gasket seal and flange.
Its further technical solution is that diversion pipe outlet side is bell-mouth structure of air, and diversion pipe extends outlet flange, leads
Flow tube gas outlet is protruded into flange of cooler.This programme can reduce shadow of the exhaust gas temperature to gasket seal of six engine of state
It rings.
Its further technical solution is, bellows both ends by welding respectively with inlet suction port, outlet flange
It is fixedly connected, the search speed of welding is 8mm~10mm.Guarantee welding quality, it is ensured that the air inlet performance of air intake structure.
The beneficial effects of the utility model are:
1. a kind of cooler for recycled exhaust gas air inlet pipe connecting structure provided by the utility model, using the air intake structure of clamp connection,
It seals stress more evenly, solves the problems, such as the conventional bolt flange face gas leakage in high-temp waste gas environment.
2, a kind of cooler for recycled exhaust gas air inlet pipe connecting structure provided by the utility model, exhaust flange, inlet flange and outlet
The damascene structures that flange, flange of cooler are matched using protrusion and groove, can be avoided high-temp waste gas directly to gasket
Piece washes away, and reduces the risk of exhaust leak.
3, a kind of cooler for recycled exhaust gas air inlet pipe connecting structure provided by the utility model, outlet is extended in diversion pipe outlet side
Flange, diversion pipe protrudes into cooler intake interface when installation, and high-temp waste gas is directly imported cooler for recycled exhaust gas, and it is useless can to reduce high temperature
Influence of the gas directly to gasket seal and flange.
4, a kind of cooler for recycled exhaust gas air inlet pipe connecting structure provided by the utility model can be suitable for six engine of state, drop
Influence of the delivery temperature of low six engine of state to air intake structure.
Detailed description of the invention
Fig. 1 are as follows: the schematic diagram of cooler for recycled exhaust gas air inlet pipe connecting structure described in the utility model.
Fig. 2 are as follows: the cross-sectional view of cooler for recycled exhaust gas air inlet pipe connecting structure described in the utility model.
Fig. 3 are as follows: the damascene structures schematic diagram of cooler for recycled exhaust gas air inlet pipe connecting structure flange described in the utility model.
Fig. 4 are as follows: the cross-sectional view of the air inlet tube of cooler for recycled exhaust gas air inlet pipe connecting structure described in the utility model.
Fig. 5 are as follows: the structural schematic diagram of the air inlet tube of cooler for recycled exhaust gas air inlet pipe connecting structure described in the utility model.
In figure: 1, air inlet tube；11, inlet flange；111, the first groove structure；12, outlet flange；121, the second protrusion
Structure；13, inlet suction port；14, bellows；15, diversion pipe；2, exhausting waste gas interface；21, exhaust flange；211, the first protrusion
Structure；3, cooler interface；31, flange of cooler；311, the second groove structure；41, the first clip；42, the second clip.
Specific embodiment
With reference to the accompanying drawing 1 to Fig. 5 and specific embodiment the utility model is described in detail.
As shown in Figure 1 and Figure 2, it is an embodiment of the utility model, a kind of cooler for recycled exhaust gas air inlet pipe connection is provided
Structure includes air inlet tube 1, the exhausting waste gas interface 2 of engine and cooler interface 3, the first clip 41 and the second clip 42；
The intake interface of air inlet tube 1 is equipped with inlet flange 11, and exhausting waste gas interface 2 is equipped with the exhaust flange opposite with inlet flange 11
21；The outlet interface of air inlet tube 1 is equipped with outlet flange 12, and cooler interface 3 is equipped with the cooler opposite with outlet flange 12
Flange 31.
First groove, the outer ring that exhaust flange 21 and the engagement of inlet flange 11 are formed are equipped in the middle part of the inner ring of first clip 41
Shape is matched with first groove, and the screw fastening clamp of the first clip outer ring, and exhaust flange 21 and inlet flange 11 engage
In the outer ring insertion first groove at place, wherein the width of groove is gradually reduced from inner ring to outer ring, makes first by rotating screw
Groove clamps exhaust flange 21 and inlet flange 11.
Second groove is equipped in the middle part of the inner ring of second clip 42, outlet flange 12 and the engagement of flange of cooler 31 form outer
Ring-shaped is matched with second groove, and passes through the screw fastening clamp of the second clip outer ring, outlet flange 12 and cooler method
In the outer ring insertion second groove of blue 31 joints, wherein the width of groove is gradually reduced from inner ring to outer ring, by rotating spiral shell
Nail makes second groove clamp outlet flange 12 and flange of cooler 31.Using 11 He of inlet flange that clamp connection flange face is smooth
Exhaust flange 21, outlet flange 12 and flange of cooler 31 so that air intake structure flange connections sealing stress more evenly,
Solves the problems, such as the conventional bolt flange face gas leakage in high-temp waste gas environment.
As shown in figure 3, another embodiment, on the basis of the above embodiment, 21 center of exhaust flange is equipped with the
One bulge-structure 211, inlet flange 11 are equipped with the first groove structure 111 matched；It is convex that 12 center of outlet flange is equipped with second
Structure 121 is played, flange of cooler 31 is equipped with the second groove structure 311 matched.Exhaust flange 21 and inlet flange 11, outlet
The damascene structures that protrusion is respectively adopted in flange 12 and flange of cooler 31 and groove matches, it is direct to can be avoided high-temp waste gas
Gasket seal is washed away, the risk of exhaust leak is reduced.
On the basis of the above embodiment, it is 1.5~2.5mm that exhaust flange 21, which is embedded in the depth of inlet flange 11, embedding
Entering the cooperation unilateral gap in depth bounds is 0.1mm~0.3mm；Outlet flange 12 be embedded in flange of cooler 31 depth be
1.5~2.5mm, the gap in insert depth direction are 0.1mm~0.3mm.Size in range, which is able to achieve, is reducing the hair of state six
The exhaust gas temperature of motivation reduces the size of air intake structure while influence on gasket seal.
As shown in Figure 4, Figure 5, another embodiment, on the basis of the above embodiment, air inlet tube 1 include air inlet
Connector 13, bellows 14 and the diversion pipe 15 inside bellows 14, one end and the inlet flange 11 of inlet suction port 13 pass through
The mode of welding is fixedly connected, the inner ring of 13 other end of inlet suction port and one end welding, outer ring and the bellows 14 of diversion pipe 15
The inner ring of one end is welded；The outer ring of 14 other end of bellows is fixedly connected by welding with 12 inner ring of outlet flange；It leads
15 other end of flow tube extends outlet flange 12.Diversion pipe 15 protrudes into cooler intake interface when installation, directly by high-temp waste gas
Cooler for recycled exhaust gas is imported, influence of the high-temp waste gas directly to gasket seal and flange can be reduced.14 both ends of bellows pass through welding
Mode is fixedly connected with inlet suction port 13, outlet flange 12 respectively, and the search speed of welding is 8mm~10mm, can be guaranteed
Welding quality, it is ensured that the air inlet performance of air intake structure.
On the basis of the above embodiment, 15 outlet side of diversion pipe is bell-mouth structure of air, and diversion pipe extends outlet method
Orchid, diversion pipe gas outlet are protruded into cooler inlet flange.Shadow of the exhaust gas temperature to gasket seal of six engine of state can be reduced
It rings.
Above embodiment illustratively shows the connection type of each component of air inlet tube 1, according to the present utility model
Other embodiments can also be replaced by other connection types, for example, integrated die-casting forms, flange, sealing ring etc. are intermediate
Sealing element connection etc..
A kind of cooler for recycled exhaust gas air inlet pipe connecting structure provided by the utility model, it is close using the air intake structure of clamp connection
It seals stress more evenly, solves the problems, such as the conventional bolt flange face gas leakage in high-temp waste gas environment；Exhaust flange 21, air inlet method
The damascene structures that orchid 11 and outlet flange 12, flange of cooler 31 are matched using protrusion and groove, it is useless to can be avoided high temperature
Gas directly washes away gasket seal, reduces the risk of exhaust leak；Outlet flange 12 is extended in 15 outlet side of diversion pipe, installation
When diversion pipe 15 protrude into cooler intake interface, high-temp waste gas is directly imported into cooler for recycled exhaust gas, it is directly right high-temp waste gas can be reduced
The influence of gasket seal and flange；It can be suitable for six engine of state, reduce the delivery temperature of six engine of state to air intake structure
Influence.
Claims (6)
1. a kind of cooler for recycled exhaust gas air inlet pipe connecting structure, which is characterized in that including air inlet tube (1), exhausting waste gas interface (2)
And cooler interface (3), the first clip (41) and the second clip (42)；
The intake interface of the air inlet tube (1) is equipped with inlet flange (11), and the exhausting waste gas interface (2) is equipped with and air inlet method
Blue (11) opposite exhaust flange (21), inlet flange (11) are connect and are pressed from both sides by the first clip (41) with exhaust flange (21)
Tightly；
The outlet interface of the air inlet tube (1) is equipped with outlet flange (12), and the cooler interface (3) is equipped with and outlet flange
(12) opposite flange of cooler (31), outlet flange (12) are connect and are pressed from both sides by the second clip (42) with flange of cooler (31)
Tightly.
2. a kind of cooler for recycled exhaust gas air inlet pipe connecting structure according to claim 1, which is characterized in that the exhaust flange
(21) center is equipped with the first bulge-structure (211), and inlet flange (11) is equipped with the first groove structure (111) matched；It is described
Outlet flange (12) center is equipped with the second bulge-structure (121), and flange of cooler (31) is equipped with the second groove structure matched
(311)。
3. a kind of cooler for recycled exhaust gas air inlet pipe connecting structure according to claim 2, which is characterized in that exhaust flange (21)
The depth for being embedded in inlet flange (11) is 1.5~2.5mm, and the gap in insert depth direction is 0.1mm~0.3mm；Outlet flange
(12) depth for being embedded in flange of cooler (31) is 1.5~2.5mm, and the gap in insert depth direction is 0.1mm~0.3mm.
4. a kind of cooler for recycled exhaust gas air inlet pipe connecting structure according to claim 1, which is characterized in that the air inlet tube
It (1) include inlet suction port (13), bellows (14) and the diversion pipe (15) for being located at bellows (14) inside, the inlet suction port
(13) one end is fixedly connected with inlet flange (11), and the inner ring of inlet suction port (13) other end and the one end of diversion pipe (15) connect
It connects, the inner ring connection of outer ring and bellows (14) one end；In the outer ring of bellows (14) other end and outlet flange (12)
Ring is fixedly connected；Diversion pipe (15) other end extends outlet flange (12).
5. a kind of cooler for recycled exhaust gas air inlet pipe connecting structure according to claim 4, which is characterized in that the diversion pipe
(15) outlet side is bell-mouth structure of air.
6. a kind of cooler for recycled exhaust gas air inlet pipe connecting structure according to claim 4, which is characterized in that the bellows
(14) both ends are fixedly connected with inlet suction port (13), outlet flange (12) respectively by welding, and the overlap joint of welding is deep
Degree is 8mm~10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821886711.3U CN209586539U (en) | 2018-11-16 | 2018-11-16 | A kind of cooler for recycled exhaust gas air inlet pipe connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821886711.3U CN209586539U (en) | 2018-11-16 | 2018-11-16 | A kind of cooler for recycled exhaust gas air inlet pipe connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209586539U true CN209586539U (en) | 2019-11-05 |
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ID=68376783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821886711.3U Active CN209586539U (en) | 2018-11-16 | 2018-11-16 | A kind of cooler for recycled exhaust gas air inlet pipe connecting structure |
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| Country | Link |
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| CN (1) | CN209586539U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339122A (en) * | 2021-06-28 | 2021-09-03 | 一汽解放汽车有限公司 | Exhaust manifold and power system |
| CN115045781A (en) * | 2022-06-10 | 2022-09-13 | 哈尔滨东安汽车动力股份有限公司 | Low-pressure cooling EGR system capable of achieving high EGR rate |
-
2018
- 2018-11-16 CN CN201821886711.3U patent/CN209586539U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339122A (en) * | 2021-06-28 | 2021-09-03 | 一汽解放汽车有限公司 | Exhaust manifold and power system |
| CN115045781A (en) * | 2022-06-10 | 2022-09-13 | 哈尔滨东安汽车动力股份有限公司 | Low-pressure cooling EGR system capable of achieving high EGR rate |
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