CN213016539U

CN213016539U - Turbocharger with seal structure relief valve

Info

Publication number: CN213016539U
Application number: CN202020894328.3U
Authority: CN
Inventors: 冯涛; 肖芝; 杨涵钦; 闫海东; 孟雄
Original assignee: Hunan Tianyan Machinery Co Ltd
Current assignee: Hunan Tianyan Machinery Co Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-04-20
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a turbocharger with a sealing structure relief valve, which comprises a turbine box and a rocker arm; the rocker arm is installed on the turbine box, a valve seat is arranged on the rocker arm, the valve seat is matched with the air release valve, a sealing structure is arranged between the valve seat and the air release valve, and when the valve seat and the air release valve are closed, the sealing performance between the matching of the valve seat and the air release valve can be improved through the sealing structure. The utility model has simple structure and easy processing; the labyrinth sealing mechanism can enable high-pressure waste gas to generate throttling phenomenon, and reduce local airflow pressure difference, thereby improving the sealing performance of the air release valve of the supercharger and improving the low-speed response performance of the supercharger.

Description

Turbocharger with seal structure relief valve

Technical Field

The utility model relates to a turbo charger technical field especially relates to a turbo charger with seal structure relief valve door.

Background

The turbocharger turbine utilizes the energy of combustion gas to drive the compressor to compress the density of the intake gas so as to improve the intake density, so that the internal combustion engine achieves higher combustion efficiency and realizes more work output.

The use of exhaust gas turbocharging technology in the automotive industry has been in the history for decades. The turbocharger with the air release valve structure (or called bypass structure) is widely popularized, and the bypass structure is designed to meet the low-speed performance of an engine and reduce the circulation capacity of the matched turbocharger, so that the low-speed work doing capacity of an automobile is improved. Meanwhile, in order to ensure high-speed performance, redundant waste gas is discharged through a vent valve structure so as to ensure the normal operation of the supercharger.

The prior turbocharger with the air relief valve structure has the following defects: the existing air release valve and the valve seat are in plane sealing, certain leakage amount can reach 10L/min at most, and therefore low-speed performance of an engine is affected.

Disclosure of Invention

The utility model aims at overcoming the not enough of prior art, and provide a simple structure, the good turbo charger who has seal structure relief valve of leakproofness.

The technical scheme of the utility model is that: a turbocharger with a sealed structure relief valve comprises a turbine box and a rocker arm; the rocker arm is installed on the turbine box, a valve seat is arranged on the rocker arm, the valve seat is matched with the air release valve, a sealing structure is arranged between the valve seat and the air release valve, and when the valve seat and the air release valve are closed, the sealing performance between the matching of the valve seat and the air release valve can be improved through the sealing structure.

The utility model discloses further technical scheme is: the sealing structure is a plurality of annular grooves with the number of grooves, and the annular grooves are arranged on the valve seat on the matching surface of the valve seat and the air release valve.

The utility model discloses further technical scheme is: the sealing structure is a plurality of annular grooves with the number of grooves, and the annular grooves are arranged on the air release valve at the matching surface of the valve seat and the air release valve.

The utility model discloses further technical scheme is: the number of the annular grooves is 2-4.

The utility model discloses further technical scheme is: the cross section of the annular groove is rectangular.

Compared with the prior art, the utility model has the following characteristics:

the invention has simple structure and easy processing; the labyrinth sealing mechanism can enable high-pressure waste gas to generate throttling phenomenon, and reduce local airflow pressure difference, thereby improving the sealing performance of the air release valve of the supercharger and improving the low-speed response performance of the supercharger.

The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.

Drawings

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

FIG. 2 is a schematic view of a seal structure in embodiment 1;

fig. 3 is a schematic view of a sealing structure in embodiment 2.

Detailed Description

Example 1

As shown in fig. 1 and 2, a turbocharger with a sealed structure relief valve comprises a turbine box 1 and a rocker arm 2; the rocker arm 2 is installed on the turbine box 1, a valve seat 3 is arranged on the rocker arm, the valve seat 3 is matched with a gas release valve 4, a sealing structure is arranged between the valve seat 3 and the gas release valve 4, and when the valve seat 3 and the gas release valve 4 are closed, the sealing performance between matching of the sealing structure can be improved.

Preferably, the sealing structure is an annular groove 5, and the annular groove 5 is arranged on the valve seat 3 at the matching surface of the valve seat 3 and the deflation valve 4, so that the end surface of the valve seat 3 and the plane edge of the deflation valve 4 form a labyrinth sealing structure. In the work, through the removal of bleed valve 4, and the control closes or opens the outside exhaust of bleed valve hole (not shown in the figure) of turbine case 1, and when the booster needs high-pressure energy, bleed valve 4 closed, and the labyrinth seal structure that bleed valve 4, disk seat 3 and annular 5 will constitute this moment increases sealing performance, solves current plane seal structure and has the gas leakage volume problem, improves the low-speed performance of engine. When the supercharger does not need high-pressure energy, the air relief valve is normally opened, and the design of the annular groove 5 does not influence the normal pressure relief process.

Preferably, the number of the annular grooves 5 is generally 2 to 4, which is related to the size of the turbocharger, and the number of the grooves is 3 in the embodiment.

The annular groove 5 is preferably rectangular in cross-section for ease of machining, although other shapes are possible, such as circular arcs, trapezoids, etc.

Example 2

As shown in fig. 1 and 3, a turbocharger with a sealed structure relief valve comprises a turbine box 1 and a rocker arm 2; the rocker arm 2 is installed on the turbine box 1, a valve seat 3 is arranged on the rocker arm, the valve seat 3 is matched with a gas release valve 4, a sealing structure is arranged between the valve seat 3 and the gas release valve 4, and when the valve seat 3 and the gas release valve 4 are closed, the sealing performance between matching of the sealing structure can be improved.

Preferably, the sealing structure is an annular groove 5, the annular groove 5 is arranged on the deflation valve door 4 on the matching surface of the valve seat 3 and the deflation valve door 4, and other technical schemes are the same as those in embodiment 1 and are not described again.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Claims

1. A turbocharger with a sealed structure relief valve comprises a turbine box (1) and a rocker arm (2); rocker arm (2) are installed on turbine case (1), are equipped with disk seat (3) on it, disk seat (3) cooperate with relief valve (4), its characterized in that: and a sealing structure is arranged between the valve seat (3) and the air release valve (4), and when the valve seat (3) and the air release valve (4) are closed, the sealing structure can improve the sealing performance between the matching.

2. A turbocharger having a seal-structured relief valve according to claim 1, wherein: the sealing structure is provided with a plurality of annular grooves (5), and the annular grooves (5) are arranged on the valve seat (3) on the matching surface of the valve seat (3) and the air release valve (4).

3. A turbocharger having a seal-structured relief valve according to claim 1, wherein: the sealing structure is provided with a plurality of annular grooves (5), and the annular grooves (5) are arranged on the air release valve (4) on the matching surface of the valve seat (3) and the air release valve (4).

4. A turbocharger having a seal-structured relief valve according to claim 2 or 3, wherein: the number of the annular grooves (5) is 2-4.

5. A turbocharger having a seal-structured relief valve according to claim 2 or 3, wherein: the cross section of the annular groove (5) is rectangular.