CN214146008U

CN214146008U - Centrifugal pressure end oil leakage prevention supercharger

Info

Publication number: CN214146008U
Application number: CN202023148945.8U
Authority: CN
Inventors: 曹营; 尹玉君
Original assignee: Fengcheng Rip Turbocharger Manufacturing Co ltd
Current assignee: Fengcheng Rip Turbocharger Manufacturing Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-07
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses a centrifugal end oil leak booster that prevents pressing, turbine shaft including impeller, back plate and running through the impeller, impeller coaxial coupling has the sealing ring supporting adjacent with the back plate, evenly distributed has centrifugal blade on a side end face that the sealing ring supporting is close to the back plate. According to the centrifugal supercharger capable of preventing the pressure end from leaking oil, the centrifugal blades are additionally arranged on the supporting end face of the sealing ring, a centrifugal chamber is formed between the back plate and the blades, and negative pressure is formed at the positions of the annular groove of the sealing ring and the inner hole of the back plate when the turbine shaft drives the impeller to rotate.

Description

Centrifugal pressure end oil leakage prevention supercharger

Technical Field

The utility model relates to a booster technical field specifically is a centrifugal end oil leak booster that prevents pressing.

Background

The existing supercharger often causes oil leakage between a sealing ring support and a rear plate (pressure end oil leakage for short) due to the increase of air inlet resistance of an air filter and the like, so that the quality problems of impeller oil stain, poor emission, increase of engine oil loss and the like are caused, and the supercharger can be damaged after long-time use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal end oil leak booster that prevents pressing to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a centrifugal supercharger capable of preventing oil leakage at a pressure end comprises an impeller, a rear plate and a turbine shaft penetrating through the impeller, wherein the impeller is coaxially connected with a sealing ring support adjacent to the rear plate, and centrifugal blades are uniformly distributed on the end face, close to the rear plate, of one side of the sealing ring support.

Preferably, the centrifugal vanes are raised on the bearing surface of the sealing ring and form centrifugal chambers with the end surface of the hole in the back plate.

Preferably, when the turbine shaft is driven to rotate, a slight negative pressure is formed between the sealing ring support and the end face of the inner hole of the rear plate.

Preferably, the coaxial outer side of the sealing support is provided with a sheet ring connecting body, and the sealing support, the impeller and the sheet ring connecting body are fixed on the turbine shaft to form an integral rotor.

Preferably, the outer wall of the sealing support adjacent to the rear plate is provided with a groove, the outer part of the inner wall of the rear plate corresponding to the groove is fixedly connected with a sealing ring, and the sealing ring is in clearance fit with the groove.

Compared with the prior art, the beneficial effects of the utility model are that: according to the centrifugal supercharger capable of preventing the pressure end from leaking oil, the centrifugal blades are additionally arranged on the supporting end face of the sealing ring, a centrifugal chamber is formed between the back plate and the blades, and negative pressure is formed at the positions of the annular groove of the sealing ring and the inner hole of the back plate when the turbine shaft drives the impeller to rotate.

Drawings

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

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a partially enlarged view of FIG. 2;

fig. 4 is a schematic structural view of the seal ring support of fig. 2.

In the figure: 1. impeller, 2, back plate, 3, sealing ring support, 4, thrust bearing, 5, sheet-ring connection body,

6. Intermediate 7, turbine shaft 8, floating bearing 9, sealing ring 10 and centrifugal blade.

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. 1-3, the present invention provides a technical solution: a centrifugal supercharger capable of preventing oil leakage at a pressure end comprises an impeller 1, a back plate 2, a turbine shaft 7 penetrating through the impeller 1 and a plate-ring integrated body 5, wherein centrifugal blades 10 are designed on the end face of a sealing ring support 3, the plate-ring integrated body 5 and the impeller 1 are fixed on the turbine shaft 7 to form a rotor capable of freely rotating; the outer wall of the sealing support 3 adjacent to the rear plate 2 is provided with a groove, the outer part of the inner wall of the rear plate 2 corresponding to the groove is fixedly connected with a sealing ring 9, the sealing ring 9 is in clearance fit with the groove, and the turbine shaft 7 is fixed in a hole of the intermediate body 6 through a floating bearing 8; a groove is formed between the sealing ring support 3 and the sheet ring connecting body 5, the thrust bearing 4 is fixed on the intermediate body 6 and is installed in the groove formed by the sheet ring connecting body 5 and the sealing ring support 3 and used for limiting the axial position of the turbine shaft, when the supercharger works, lubricating oil flows out through an inner hole and an outer circle of the floating bearing and two end faces of the thrust bearing and is sprayed to the inner holes of the sealing ring support 3 and the back plate 2, centrifugal blades 10 evenly distributed on the end face of the sealing ring support 3 and the end face of the inner hole of the back plate 2 form a centrifugal chamber, when the rotor rotates under the driving of the turbine shaft 7, the lubricating oil and air are continuously thrown out of the formed centrifugal chamber, a micro negative pressure area is formed between the sealing ring support 3 and the inner hole of the back plate 2, the absolute pressure of the position is lower than the pressure of the wheel back of the wheel 1 on the outer side of the back plate, and the lubricating oil is effectively prevented from leaking to the end of the wheel 1 through the C-shaped opening of the dense ring.

The impeller, the turbine and the sealing ring support are locked together through nuts to form a rotor, when engine exhaust gas with certain pressure enters the volute, the rotor can be pushed to rotate at high speed, and the rotating impeller can continuously form compressed gas at the air outlet of the pressure shell and convey the compressed gas to an engine cylinder. The intermediate body plays a role in supporting the rotor, the rotor rotating at high speed can normally work only by good enough lubrication, and lubricating oil with certain pressure is fed from an oil inlet of the intermediate body and is used for lubricating the floating bearing and the thrust bearing. The thrust bearing is used for limiting the axial movement of the rotor, and the corresponding part on the rotor is the sealing ring support. The excircle of the sealing ring support is provided with a ring groove for placing a metal sealing ring, and the sealing ring is circumferentially provided with a left opening and a right opening of 0.1, so that allowance is reserved for thermal expansion.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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 a centrifugal pressure end oil leak booster that prevents, includes impeller (1), back plate (2) and turbine shaft (7) that run through impeller (1), its characterized in that: the impeller (1) is coaxially connected with a sealing ring support (3) adjacent to the back plate (2), and centrifugal blades (10) are uniformly distributed on the end face, close to the back plate (2), of one side of the sealing ring support (3).

2. The centrifugal oil-leakage-preventing end supercharger according to claim 1, characterized in that: the centrifugal blade (10) is raised on the surface of the sealing ring support (3) and forms a centrifugal chamber with the end face of the hole in the back plate (2).

3. The centrifugal oil-leakage-preventing end supercharger according to claim 2, characterized in that: when the turbine shaft (7) is driven to rotate, micro negative pressure is formed between the sealing ring support (3) and the end face of the inner hole of the rear plate (2).

4. The centrifugal oil-leakage-preventing end supercharger according to claim 1, characterized in that: the coaxial outer side of the sealing ring support (3) is provided with a sheet ring connecting body (5), and the sealing ring support (3), the impeller (1) and the sheet ring connecting body (5) are fixed on a turbine shaft (7) to form an integral rotor.

5. The centrifugal oil-leakage-preventing end supercharger according to claim 1, characterized in that: the outer wall of the sealing ring support (3) adjacent to the rear plate (2) is provided with a groove, the outer part of the inner wall of the rear plate (2) corresponding to the groove is fixedly connected with a sealing ring (9), and the sealing ring (9) is in clearance fit with the groove.