Oil-gas sealing structure at turbine end of turbocharger

Abstract

The utility model relates to the field of turbochargers, and particularly discloses a turbocharger turbine end oil-gas sealing structure which comprises a middle body, a rotating shaft is movably connected in the middle body, a reinforcing assembly is arranged outside the rotating shaft, and the reinforcing assembly comprises a disc fixedly connected to the front end of the outer portion of the rotating shaft. First sliding grooves are formed in the disc, the number of the first sliding grooves is four, first sliding blocks are movably connected to the interiors of the four first sliding grooves, push rods are fixedly connected to the front ends of the four first sliding blocks, the four push rods penetrate through the outside of the disc, and push plates are fixedly connected to the front ends of the push rods. First springs are fixedly connected to the upper ends of the four first sliding blocks, force can be applied to the sealing gasket in the working process of the turbocharger, the sealing gasket is made to be tightly attached to the connecting position of the rotating shaft, and therefore engine oil leakage caused by sealing failure is avoided, and the service life of the turbocharger is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of turbochargers, in particular to an oil and gas sealing structure at a turbine end of a turbocharger. Background Art

[0002] A turbocharger is a device that efficiently improves engine performance by compressing air to increase the intake volume, thereby improving the engine's power and efficiency. In this way, the turbocharger effectively increases the engine's power output and fuel efficiency while reducing exhaust emissions.

[0003] The turbocharger oil and gas sealing structure is a key part to ensure the normal operation of the turbocharger. It prevents the leakage of engine oil and exhaust gas through precise design and multi-layer sealing components. It mainly prevents the leakage of high-temperature gas and lubricating oil through the design of multi-layer sealing components, ensuring the normal operation of the turbocharger.

[0004] In the existing technical solutions, a sealing gasket is usually installed at the exhaust pipe connecting flange to prevent oil leakage and exhaust gas intrusion. However, after long-term operation, the sealing gasket will become loose, causing oil leakage inside the intermediate body, thereby affecting the operation of the turbocharger.

[0005] Therefore, a turbocharger turbine end oil and gas sealing structure is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide an oil and gas sealing structure at the turbine end of a turbocharger, which can apply force to the sealing gasket during the operation of the turbocharger so that it fits tightly to the shaft connection, thereby avoiding oil leakage caused by seal failure, and further extending the service life of the turbocharger to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a turbocharger turbine end oil and gas sealing structure, comprising an intermediate body, the interior of the intermediate body being movably connected to a rotating shaft, the exterior of the rotating shaft being provided with a reinforcement component, the reinforcement component comprising a disc fixedly connected to the exterior front end of the rotating shaft, a first slide groove being provided inside the disc, the number of the first slide grooves being four, the interiors of the four first slide grooves being movably connected to a first slider, the front ends of the four first sliders being fixedly connected to a push rod, the four push rods all extending to the exterior of the disc, the front ends of the push rods being fixedly connected to a push plate.

[0008] Preferably, one end of each of the four first sliding blocks away from the rotating shaft is fixedly connected to a first spring, and the outside of the push rod is movably connected to a second spring.

[0009] Preferably, the front end of the intermediate body is fixedly connected to the turbine housing, and the rear end of the intermediate body is fixedly connected to the compressor volute.

[0010] Preferably, the outer front end of the rotating shaft is fixedly connected to the compressor impeller, the outer rear end of the rotating shaft is fixedly connected to the turbine impeller, and the outer front end of the rotating shaft is movably connected to a sealing gasket.

[0011] Preferably, the front end of the turbine impeller is fixedly connected to a guard plate, and a cleaning assembly is provided inside the guard plate. The number of the cleaning assemblies is two, and the cleaning assembly includes a second slide groove opened inside the guard plate, and the interior of the second slide groove is movably connected to a second slider, and the second slider extends to the front end of the guard plate, and the end of the second slider away from the rotating shaft is fixedly connected to a third spring.

[0012] Preferably, the front end of the second sliding block is fixedly connected to a box body, and a square groove is formed at one end of the box body close to the rotating shaft.

[0013] Preferably, the front end of the first slider is inclined, and the elastic force of the first spring is greater than the centrifugal force exerted on the first slider during rotation.

[0014] Preferably, the elastic force of the third spring is greater than the centrifugal force exerted on the second slider during rotation, and the box body is movably fitted to the outside of the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This turbocharger turbine end oil and gas seal structure, by installing a disc, a first slider, a push rod, a second spring, and a push plate, can apply force to the seal during the operation of the turbocharger, making it fit tightly against the shaft connection, thereby preventing oil leakage caused by seal failure and thus extending the service life of the turbocharger.

[0017] 2. This turbocharger turbine end oil and gas sealing structure, by installing components such as a second slider, a third spring, a box body and a square groove, can clean the oil sludge at the junction of the impeller and the supercharger housing during the operation of the turbocharger, thereby avoiding affecting the impeller speed and improving the working efficiency of the turbocharger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 This is a schematic diagram of a half-section structure of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the rotating shaft of the present utility model;

[0022] Figure 4 For the utility model Figure 3 A magnified view of center.

[0023] Description of reference numerals:

[0024] 1. Intermediate body; 11. Compressor volute; 12. Turbine housing; 2. Rotating shaft; 21. Guard plate; 3. Reinforcement assembly; 31. Disc; 311. First slide groove; 32. First slider; 321. First spring; 33. Push rod; 331. Second spring; 34. Push plate; 4. Sealing gasket; 41. Compressor impeller; 42. Turbine impeller; 5. Cleaning assembly; 51. Second slide groove; 52. Second slider; 521. Third spring; 53. Housing; 531. Square groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 4 , the utility model provides a technical solution:

[0027] A turbocharger turbine end oil and gas sealing structure includes an intermediate body 1, wherein the interior of the intermediate body 1 is movably connected to a rotating shaft 2, and a reinforcement component 3 is provided on the outside of the rotating shaft 2. The reinforcement component 3 includes a disc 31 fixedly connected to the front end of the outer side of the rotating shaft 2, and a first slide groove 311 is opened inside the disc 31. There are four first slide grooves 311, and the interiors of the four first slide grooves 311 are all movably connected to a first slider 32. The front ends of the four first sliders 32 are all fixedly connected to a push rod 33. The four push rods 33 all penetrate the outside of the disc 31, and the front ends of the push rods 33 are fixedly connected to a push plate 3 4. The ends of the four first sliders 32 away from the rotating shaft 2 are fixedly connected to the first spring 321, and the outside of the push rod 33 is movably connected to the second spring 331. The front end of the intermediate body 1 is fixedly connected to the turbine housing 12, and the rear end of the intermediate body 1 is fixedly connected to the compressor volute 11. The front end of the outside of the rotating shaft 2 is fixedly connected to the compressor impeller 41, and the rear end of the outside of the rotating shaft 2 is fixedly connected to the turbine impeller 42. The outside of the rotating shaft 2 is movably connected to the front end with a sealing gasket 4. The front end of the first slider 32 is inclined, and the elastic force of the first spring 321 is greater than the centrifugal force exerted on the first slider 32 during rotation.

[0028] By adopting the above technical solution, before the turbocharger is installed, the sealing gasket 4 needs to be installed at the connection between the rotating shaft 2 and the two ends of the intermediate body 1. Then, when the exhaust gas enters the compressor volute 11, as the exhaust gas continuously passes through the turbine impeller 42 at the rear end of the external shaft 2, the turbine impeller 42 rotates and rotates with the rotating shaft 2 and the compressor impeller 41 inside the turbine housing 12. When the turbocharger is working, as the engine oil continuously enters the interior of the intermediate body 1, the rotating shaft 2 is protected and lubricated. Under the continuous rotation of the rotating shaft 2, the sealing gasket 4 on the external side of the rotating shaft 2 is vibrated out of the working position. At this time, The rotation of the shaft 2 causes the disc 31 to rotate, and the rotation of the first slider 32 inside the first slide groove 311 is affected by the centrifugal force and compresses the first spring 321 to move toward the end of the first slide groove 311 away from each other. As the first slider 32 moves, the push rod 33 moves along the slope of the front end of the first slider 32 and compresses the second spring 331 forward to move, thereby causing the push rod 33 to push the push plate 34 to push the sealing gasket 4 and fix it, so as to exert force on the sealing gasket 4 through the reinforcement component 3, so that it fits tightly against the connection of the shaft 2, thereby avoiding oil leakage caused by seal failure, thereby extending the service life of the turbocharger.

[0029] Specifically, such as Figure 3As shown, the front end of the turbine impeller 42 is fixedly connected to the guard plate 21, and a cleaning assembly 5 is provided inside the guard plate 21. The number of the cleaning assemblies 5 is two, and the cleaning assembly 5 includes a second slide groove 51 opened inside the guard plate 21, and the second slide groove 51 is movably connected to the inside of the second slider 52. The second slider 52 passes through the front end of the guard plate 21, and the end of the second slider 52 away from the rotating shaft 2 is fixedly connected to the third spring 521. The front end of the second slider 52 is fixedly connected to the box body 53, and the end of the box body 53 close to the rotating shaft 2 is provided with a square groove 531. The elastic force of the third spring 521 is greater than the centrifugal force exerted on the second slider 52 when it rotates, and the box body 53 is movably fitted to the outside of the rotating shaft 2.

[0030] By adopting the above technical solution, when the exhaust gas entering from the compressor volute 11 contains too much dust, the dust will mix with the oil inside the intermediate body 1 to form sludge. Over time, the sludge will accumulate at the junction of the turbine impeller 42 and the rear end of the intermediate body 1, affecting the normal operation of the supercharger. At this time, the rotation of the rotating shaft 2 causes the external guard plate 21 to rotate together. As the guard plate 21 rotates, the second slider 52 inside the second chute 51 rotates under the influence of centrifugal force, continuously compressing the third spring 521 to move toward the outside of the second chute 51, and the second slider 52 moves with the box 53, thereby avoiding affecting the normal operation of the supercharger. The normal operation of the rotating shaft 2 and other components is affected. After the turbocharger finishes working, the guard plate 21 is gradually decelerated by inertia. When the elastic force of the third spring 521 is greater than the sum of the gravity of the second slider 52 and the box body 53, the third spring 521 pushes the second slider 52 and the box body 53 downward, so that the box body 53 rotates and contacts the rotating shaft 2 and gradually stops. During the rotation process, the oil sludge on the outside of the rotating shaft 2 is continuously cleaned into the inside of the box body 53 through the square groove 531, so as to achieve the cleaning of the oil sludge at the junction of the impeller and the supercharger housing through the cleaning component 5, thereby avoiding affecting the impeller speed and thereby improving the working efficiency of the turbocharger.

[0031] Working principle: When the exhaust gas enters the compressor volute 11, as the exhaust gas continuously passes through the turbine impeller 42 at the rear end of the shaft 2, the turbine impeller 42 rotates and drives the shaft 2 and the compressor impeller 41 inside the turbine housing 12 to rotate together. When the turbocharger is working, as the engine oil continuously enters the interior of the intermediate body 1, the shaft 2 is protected and lubricated. Under the continuous rotation of the shaft 2, the sealing gasket 4 outside the shaft 2 is vibrated out of the working position. At this time, the disc 31 is rotated by the rotation of the shaft 2, and the first chute 3 The rotation of the first slider 32 inside 11 is affected by the centrifugal force and compresses the first spring 321 to move toward the end of the first slide groove 311 away from each other. As the first slider 32 moves, the push rod 33 moves along the slope of the front end of the first slider 32 and compresses the second spring 331 forward to move, thereby causing the push rod 33 to push the push plate 34 to push the sealing gasket 4 and fix it, so as to exert force on the sealing gasket 4 through the reinforcement component 3, so that it fits tightly against the connection of the rotating shaft 2, thereby avoiding oil leakage caused by seal failure, thereby extending the service life of the turbocharger.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A turbocharger turbine end oil and gas sealing structure, comprising an intermediate body (1), characterized in that: The interior of the intermediate body (1) is movably connected to a rotating shaft (2), and a reinforcement component (3) is provided on the exterior of the rotating shaft (2). The reinforcement component (3) includes a disk (31) fixedly connected to the front end of the exterior of the rotating shaft (2). A first sliding groove (311) is provided inside the disk (31). The number of the first sliding grooves (311) is four. The interiors of the four first sliding grooves (311) are all movably connected to a first slider (32). The front ends of the four first sliders (32) are all fixedly connected to a push rod (33). The four push rods (33) all extend to the exterior of the disk (31), and the front ends of the push rods (33) are fixedly connected to a push plate (34).

2. The turbocharger turbine end oil and gas sealing structure according to claim 1, characterized in that: One end of each of the four first sliding blocks (32) away from the rotating shaft (2) is fixedly connected to a first spring (321), and the outside of the push rod (33) is movably connected to a second spring (331).

3. The turbocharger turbine end oil and gas sealing structure according to claim 1, characterized in that: The front end of the intermediate body (1) is fixedly connected to a turbine housing (12), and the rear end of the intermediate body (1) is fixedly connected to a compressor volute (11).

4. The turbocharger turbine end oil and gas sealing structure according to claim 1, characterized in that: The outer front end of the rotating shaft (2) is fixedly connected to the compressor impeller (41), the outer rear end of the rotating shaft (2) is fixedly connected to the turbine impeller (42), and the outer front end of the rotating shaft (2) is movably connected to a sealing gasket (4).

5. The turbocharger turbine end oil and gas sealing structure according to claim 4, characterized in that: The front end of the turbine impeller (42) is fixedly connected to a guard plate (21), and a cleaning assembly (5) is provided inside the guard plate (21). The number of the cleaning assemblies (5) is two, and the cleaning assembly (5) includes a second slide groove (51) opened inside the guard plate (21), and a second slider (52) is movably connected inside the second slide groove (51). The second slider (52) passes through the front end of the guard plate (21), and the end of the second slider (52) away from the rotating shaft (2) is fixedly connected to a third spring (521).

6. The turbocharger turbine end oil and gas sealing structure according to claim 5, characterized in that: The front end of the second sliding block (52) is fixedly connected to a box body (53), and a square groove (531) is provided at one end of the box body (53) close to the rotating shaft (2).

7. The turbocharger turbine end oil and gas sealing structure according to claim 2, characterized in that: The front end of the first slider (32) is inclined, and the elastic force of the first spring (321) is greater than the centrifugal force exerted on the first slider (32) during rotation.

8. The turbocharger turbine end oil and gas sealing structure according to claim 6, characterized in that: The elastic force of the third spring (521) is greater than the centrifugal force exerted on the second slider (52) during rotation, and the box body (53) is movably fitted to the outside of the rotating shaft (2).

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