CN210530975U

CN210530975U - Radial flow type exhaust gas turbocharger capable of avoiding low-load oil leakage

Info

Publication number: CN210530975U
Application number: CN201921210427.9U
Authority: CN
Inventors: 刘光华
Original assignee: Weifang Lianxin Supercharger Ltd By Share Ltd
Current assignee: Weifang Lianxin Supercharger Ltd By Share Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-15
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses an avoid radial-flow type exhaust gas turbocharger of low-load oil leak relates to booster technical field. The turbine volute comprises a turbine housing, an intermediate body and a compressor volute, wherein the left side of the turbine housing is fixedly connected with the intermediate body through a fastening bolt. This avoid radial-flow exhaust gas turbocharger of low-load oil leak, through setting up sealed ring bearing seal and sealed apron, the advantage of avoiding the oil leak has been realized, sealed ring bearing seal and sealed apron have been redesigned on original booster basis, and no longer use original shelves oil blanket, first seal groove slot and second seal groove slot similar to labyrinth structure have been increased simultaneously on sealed ring bearing seal and sealed apron, and special oil gallery has been increased on the sealed apron, make the booster when piston engine low-speed operation, because the reduction of pressure causes the unbalanced oil leak phenomenon of midbody and two shell insides to obtain thorough solution.

Description

Radial flow type exhaust gas turbocharger capable of avoiding low-load oil leakage

Technical Field

The utility model relates to a booster technical field specifically is a radial flow type exhaust gas turbocharger who avoids low-load oil leak.

Background

As is well known, the operating principle of a turbocharger is that the turbine in a turbine chamber is pushed by the inertia impulse force of exhaust gas exhausted by an engine, the turbine drives a coaxial impeller, the impeller compresses air sent by an air filter pipeline to boost the air into a cylinder, the engine speed is increased, the exhaust gas exhaust speed and the turbine speed are synchronously increased, the impeller compresses more air to enter the cylinder, the pressure and the density of the air are increased to burn more fuel, the engine power can be increased by correspondingly increasing the fuel quantity and adjusting the engine speed, therefore, the turbocharger is widely used for various automobiles, and as the product yield is increased and the application range is widened, the turbocharger has the following defects in the use process:

1. in the prior art, some superchargers, such as a tin-free Hall Sett supercharger, have the disadvantages of complex processing technology, more assembly parts, high cost and unreasonable design;

2. in the prior art, when the supercharger of the diesel engine is under low load, a part of lubricating oil still enters a compressor region through a sealing ring and a sealing ring, so that the supercharger leaks oil, and the sealing effect is not ideal.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an avoid radial-flow type exhaust gas turbocharger of low-load oil leak possesses advantages such as optimizing assembly structure, reduction manufacturing cost and avoiding the oil leak, and it is complicated to have solved current processing technology, and assembly spare part is many, and is with high costs, the booster oil leak, sealed effect unsatisfactory problem.

(II) technical scheme

For the purpose of realizing above-mentioned optimization assembly structure, reducing manufacturing cost and avoiding the oil leak, the utility model provides a following technical scheme: the utility model provides an avoid runoff formula exhaust gas turbocharger of low-load oil leak, includes turbine housing, midbody and compressor spiral case, fastening bolt and midbody fastening connection are passed through in the left side of turbine housing, fastening bolt and compressor spiral case fastening connection are passed through on the right side of midbody, the inside of midbody is equipped with the rotor assembly, the left end of rotor assembly is equipped with sealed dicyclo, sealed dicyclo department has cup jointed sealed ring bearing seal, the skin of sealed ring bearing seal is equipped with first seal groove, sealed apron has been cup jointed to the outside of sealed ring bearing seal, the inlayer of sealed apron is equipped with second seal groove, the right-hand member of sealed apron is equipped with the oil gallery.

As an optimal technical scheme of the utility model, the left side of compressor spiral case is equipped with air inlet, and the inside of compressor spiral case is equipped with the intake duct, turbine housing's right side is equipped with the exhaust outlet, and turbine housing's inside is equipped with the ventiduct.

As an optimized technical scheme of the utility model, the top of midbody is equipped with the machine oil entry, the bottom of midbody is equipped with the machine oil export, the machine oil entry keeps on same axial centerline with the machine oil export.

As an optimized technical scheme of the utility model, the inside of midbody is equipped with the floating bearing, and through floating bearing and rotor assembly swing joint.

As an optimal technical scheme of the utility model, the rotor assembly includes pivot, turbine wheel and compressor impeller, turbine wheel fixed mounting is in wherein one end of pivot, compressor impeller fixed mounting is in the other end of pivot.

As a preferred technical scheme of the utility model, the sealing ring bearing seal is closed through first seal groove slot and second seal groove slot and sealed apron and is connected, the right-hand member of sealing ring bearing seal is equipped with the annular groove, the left end of sealed apron is equipped with trapezoidal recess.

(III) advantageous effects

Compared with the prior art, the utility model provides an avoid radial-flow exhaust gas turbocharger of low-load oil leak possesses following beneficial effect:

1. this avoid radial-flow exhaust gas turbocharger of low-load oil leak through setting up the midbody, has realized optimizing assembly structure, has reduced manufacturing cost's advantage, has redesigned the midbody on original booster basis, combines together through the casting by two kinds of independent built-up components of original midbody and diffuser back shroud, has reduced spare part quantity like this, has reduced manufacturing cost, has improved assembly efficiency.

2. This avoid runoff formula exhaust gas turbo charger of low-load oil leak, through setting up sealed ring shaft seal and sealed apron, the advantage of avoiding the oil leak has been realized, sealed ring shaft seal and sealed apron have been redesigned on original booster basis, and no longer use original shelves oil blanket, first seal groove slot and second seal groove slot similar to labyrinth structure have been increased simultaneously on sealed ring shaft seal and sealed apron, and special oil gallery has been increased on the sealed apron, make the booster when piston engine low-speed operation, because the reduction of pressure causes the unbalanced oil leak phenomenon of midbody and two shell insides to obtain thorough solution, it is the product of a quality overhard to verify through the market.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the internal structure of the intermediate body of the present invention;

FIG. 3 is a front view of the rotor assembly of the present invention;

FIG. 4 is a schematic view of the internal structure of the seal ring shaft seal of the present invention;

fig. 5 is a schematic view of the internal structure of the sealing cover plate of the present invention.

In the figure: 1. a turbine housing; 2. an intermediate; 3. a compressor volute; 4. a rotor assembly; 5. sealing the double rings; 6. sealing ring shaft seal; 7. a first seal groove; 8. sealing the cover plate; 9. a second seal groove; 10. an oil return groove; 11. an air inlet; 12. an air inlet channel; 13. an exhaust outlet; 14. an air outlet channel; 15. an engine oil inlet; 16. an engine oil outlet; 17. a floating bearing; 18. a rotating shaft; 19. a turbine wheel; 20. an air compressor impeller; 21. an annular groove; 22. a trapezoidal groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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 work belong to the protection scope of the present invention.

Referring to fig. 1-5, a radial flow type exhaust gas turbocharger capable of avoiding low load oil leakage includes a turbine housing 1, an intermediate body 2 and a compressor volute 3, the left side of the turbine housing 1 is fastened to the intermediate body 2 through a fastening bolt, the left side of the intermediate body 2 is fastened to the compressor volute 3 through a fastening bolt, and by arranging the intermediate body 2, advantages of optimized assembly structure and reduced manufacturing cost are achieved, the intermediate body 2 is redesigned on the basis of an original turbocharger, two independent assembly parts of the original intermediate body 2 and a diffuser rear cover plate are combined together through casting, so that the number of parts is reduced, manufacturing cost is reduced, and assembly efficiency is improved, a rotor assembly 4 is arranged inside the intermediate body 2, a sealing double ring 5 is arranged at the left end of the rotor assembly 4, and a sealing ring shaft seal 6 is sleeved at the sealing double ring 5, the outer layer of the sealing ring shaft seal 6 is provided with a first sealing groove 7, the outer part of the sealing ring shaft seal 6 is sleeved with a sealing cover plate 8, the inner layer of the sealing cover plate 8 is provided with a second sealing groove 9, the right end of the sealing cover plate 8 is provided with an oil return groove 10, the advantages of avoiding oil leakage are realized by arranging the sealing ring shaft seal 6 and the sealing cover plate 8, the sealing ring shaft seal 6 and the sealing cover plate 8 are redesigned on the basis of the original supercharger, the original oil baffle cover is not used, the first sealing groove 7 and the second sealing groove 9 which are similar to a labyrinth structure are simultaneously added on the sealing ring shaft seal 6 and the sealing cover plate 8, and the special oil return groove 10 is added on the sealing cover plate 8, so that the oil leakage phenomenon that the pressure in the intermediate body 2 and the two shells is unbalanced due to the reduction of the pressure is thoroughly solved when the piston engine runs, the product is over hard in quality after market verification.

Specifically, the left side of the compressor volute 3 is provided with an air inlet 11, an air inlet channel 12 is arranged inside the compressor volute 3, the right side of the turbine housing 1 is provided with an exhaust outlet 13, and an air outlet channel 14 is arranged inside the turbine housing 1.

In this embodiment, high-temperature and high-pressure exhaust gas enters the air outlet channel 14 inside the turbine housing 1 through the exhaust outlet 13 to drive the turbine impeller 19 on the rotor assembly 4 to rotate at a high speed, the coaxial compressor impeller 20 rotates at a high speed in a reverse direction, and a large amount of fresh air enters the air inlet channel 12 inside the compressor volute 3 through the air inlet 11 and is pressed into the cylinder of the piston engine at 2-3 times of atmospheric pressure, so that the fuel is fully combusted, and the purposes of improving power and reducing emission are achieved.

Specifically, an engine oil inlet 15 is formed in the top of the intermediate body 2, an engine oil outlet 16 is formed in the bottom of the intermediate body 2, and the engine oil inlet 15 and the engine oil outlet 16 are kept on the same axial center line.

In this embodiment, the lubricating oil from the piston engine enters the rotor assembly 4 through the oil inlet 15, cools and lubricates the rotor assembly 4, and is discharged through the oil outlet 16 after use.

Specifically, a floating bearing 17 is arranged inside the intermediate body 2, and is movably connected with the rotor assembly 4 through the floating bearing 17.

In this embodiment, the floating bearing 17 plays a role in connecting the intermediate body 2 and the rotor assembly 4, and does not affect the operation of the rotor assembly 4.

Specifically, the rotor assembly 4 includes a rotating shaft 18, a turbine wheel 19 and a compressor wheel 20, the turbine wheel 19 is fixedly mounted at one end of the rotating shaft 18, and the compressor wheel 20 is fixedly mounted at the other end of the rotating shaft 18.

In the embodiment, after high-temperature and high-pressure exhaust gas enters the turbine housing 1, the turbine impeller 19 on the rotor assembly 4 is driven to rotate at a high speed, and the coaxial compressor impeller 20 rotates at a high speed in a reverse direction, so that a large amount of fresh air enters the compressor volute 3 and is pressed into the piston engine cylinder at 2-3 times of atmospheric pressure, and fuel is fully combusted.

Specifically, the sealing ring shaft seal 6 is connected with the sealing cover plate 8 in a sealing manner through a first sealing groove 7 and a second sealing groove 9, an annular groove 21 is formed in the right end of the sealing ring shaft seal 6, and a trapezoidal groove 22 is formed in the left end of the sealing cover plate 8.

In the embodiment, a first sealing groove 7 and a second sealing groove 9 which are similar to a labyrinth structure are added on the sealing ring shaft seal 6 and the sealing cover plate 8, and a special oil return groove 10 is added on the sealing cover plate 8, so that when the supercharger runs at a low speed of the piston engine, the oil leakage phenomenon that the pressure inside the intermediate body 2 and the two shells is unbalanced due to the reduction of the pressure is thoroughly solved, and the annular groove 21 and the trapezoidal groove 22 are used for installing sealing rings.

The utility model discloses a theory of operation and use flow: when in use, the inertia impulse force of high-temperature and high-pressure waste gas discharged by an engine enters an air outlet channel 14 in a turbine shell 1 through an exhaust outlet 13 to push a turbine impeller 19 on a rotor assembly 4 to rotate at a high speed, and simultaneously, the turbine impeller 19 drives a coaxial compressor impeller 20 to rotate at a high speed in a reverse direction, and a large amount of fresh air enters an air inlet channel 12 in a compressor volute 3 through an air inlet 11 and is pressed into a piston engine cylinder at 2-3 times of atmospheric pressure to fully combust fuel, thereby achieving the purposes of improving power and reducing emission, wherein, an intermediate body 2 is redesigned on the basis of the original supercharger, two independent assembly parts of the original intermediate body 2 and a diffuser rear cover plate are combined together through casting, thereby reducing the number of parts, reducing the manufacturing cost and improving the assembly efficiency, a sealing ring shaft seal 6 and a sealing cover plate 8 are redesigned on the basis of the original supercharger, and the original oil retaining cover is not used any more, a first sealing groove 7 and a second sealing groove 9 which are similar to a labyrinth structure are simultaneously added on the sealing ring shaft seal 6 and the sealing cover plate 8, and a special oil return groove 10 is added on the sealing cover plate 8, so that the oil leakage phenomenon of unbalanced pressure in the intermediate body 2 and the two shells caused by pressure reduction when the supercharger operates at low speed of the piston engine is thoroughly solved.

In summary, the radial flow type exhaust gas turbocharger avoiding low load and oil leakage realizes the advantages of optimizing an assembly structure and reducing the manufacturing cost by arranging the intermediate body 2, redesigns the intermediate body 2 on the basis of the original turbocharger, combines two independent assembly parts of the original intermediate body 2 and a diffuser rear cover plate together by casting, reduces the number of parts, reduces the manufacturing cost and improves the assembly efficiency, realizes the advantage of avoiding oil leakage by arranging the sealing ring shaft seal 6 and the sealing cover plate 8, redesigns the sealing ring shaft seal 6 and the sealing cover plate 8 on the basis of the original turbocharger, does not use the original oil retaining cover, simultaneously increases the first sealing groove 7 and the second sealing groove 9 which are similar to a labyrinth structure on the sealing ring 6 and the sealing cover plate 8, and increases the special oil return groove 10 on the sealing cover plate 8, when the supercharger runs at low speed of the piston engine, the phenomenon of oil leakage caused by unbalanced pressure in the intermediate body 2 and the two shells due to pressure reduction is thoroughly solved, and the supercharger is a product with over hard quality through market verification.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an avoid radial-flow exhaust gas turbocharger of low-load oil leak, includes turbine housing (1), midbody (2) and compressor spiral case (3), its characterized in that: fastening bolt and midbody (2) fastening connection are passed through to the left side of turbine casing (1), fastening bolt and compressor spiral case (3) fastening connection are passed through to the left side of midbody (2), the inside of midbody (2) is equipped with rotor assembly (4), the left end of rotor assembly (4) is equipped with sealed dicyclo (5), sealed dicyclo (5) department has cup jointed sealed ring bearing seal (6), the skin of sealed ring bearing seal (6) is equipped with first seal groove slot (7), sealed apron (8) have been cup jointed to the outside of sealed ring bearing seal (6), the inlayer of sealed apron (8) is equipped with second seal groove slot (9), the right-hand member of sealed apron (8) is equipped with oil return tank (10).

2. A radial flow type exhaust gas turbocharger avoiding low load oil leakage according to claim 1, characterized in that: the left side of compressor spiral case (3) is equipped with air inlet (11), and the inside of compressor spiral case (3) is equipped with intake duct (12), the right side of turbine housing (1) is equipped with exhaust outlet (13), and the inside of turbine housing (1) is equipped with air outlet (14).

3. A radial flow type exhaust gas turbocharger avoiding low load oil leakage according to claim 1, characterized in that: the top of the intermediate body (2) is provided with an engine oil inlet (15), the bottom of the intermediate body (2) is provided with an engine oil outlet (16), and the engine oil inlet (15) and the engine oil outlet (16) are kept on the same axial central line.

4. A radial flow type exhaust gas turbocharger avoiding low load oil leakage according to claim 1, characterized in that: the intermediate body (2) is internally provided with a floating bearing (17) and is movably connected with the rotor assembly (4) through the floating bearing (17).

5. A radial flow type exhaust gas turbocharger avoiding low load oil leakage according to claim 1, characterized in that: the rotor assembly (4) comprises a rotating shaft (18), a turbine impeller (19) and a compressor impeller (20), wherein the turbine impeller (19) is fixedly arranged at one end of the rotating shaft (18), and the compressor impeller (20) is fixedly arranged at the other end of the rotating shaft (18).

6. A radial flow type exhaust gas turbocharger avoiding low load oil leakage according to claim 1, characterized in that: the sealing cover plate is characterized in that the sealing ring shaft seal (6) is hermetically connected with the sealing cover plate (8) through a first sealing groove (7) and a second sealing groove (9), an annular groove (21) is formed in the right end of the sealing ring shaft seal (6), and a trapezoidal groove (22) is formed in the left end of the sealing cover plate (8).