CN210397236U

CN210397236U - Compressor pressure shell

Info

Publication number: CN210397236U
Application number: CN201920781094.9U
Authority: CN
Inventors: 沈艳; 叶震杰; 袁玺; 陈建平
Original assignee: Wuxi Credible Turbocharger Co ltd
Current assignee: Wuxi Credible Turbocharger Co ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-04-24
Anticipated expiration: 2029-05-30

Abstract

The utility model relates to a turbo charger, compressor pressure shell always specifically says so. It comprises a shell, and the shell is provided with an air inlet part and an air outlet part. The air return structure is characterized in that an air return cavity is formed in the top of the shell, and one side of the air return cavity is communicated with an inner cavity of the air inlet part. A communicating opening is formed between the bottom of the air return cavity and the inner cavity of the air outlet part, and a pressure release valve is arranged on the communicating opening. The compressor using the pressure shell has no vibration, the impeller does not loosen, and the surge phenomenon is avoided.

Description

Compressor pressure shell

Technical Field

The utility model relates to a turbo charger, a compressor pressure shell with pressure release function specifically says so.

Background

The compressor, the part which uses the blade rotating at high speed to do work for air in the automobile turbine engine to increase the air pressure. The compressor is provided with a pressure shell.

At present, a compressor press shell used in the industry comprises a shell body, and the shell body is provided with an air inlet part and an air outlet part. When the air outlet part is used, the air outlet part is connected with an air inlet throttle valve of an engine. When the automobile runs at a high speed, the rotating speed of an air compressor impeller is hundreds of thousands of revolutions per minute, the pressure of a connecting part of an air outlet part of the air compressor and an air inlet throttle valve of an engine is about 2 atmospheric pressures, when the automobile is decelerated and the air inlet throttle valve of the engine is closed, the rotating speed of the engine is suddenly reduced, the air compressor continues to operate at a high speed by inertia at the moment, air continues to compress and work, the pressure of the connecting part of the air outlet part of the air compressor and the air inlet throttle valve of the engine exceeds the ordinary pressure, and meanwhile, due to the closing of the air inlet throttle valve of the engine, ultrahigh pressure returns to the air compressor impeller, so that the impeller is blocked to shake or even reverse, the air compressor is vibrated, and. Moreover, when an intake throttle of the engine is closed, air entering the air inlet portion of the compressor is reduced, and a surge phenomenon occurs.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a compressor pressure shell, vibrations can not appear using the compressor of this pressure shell, and the impeller can not the pine take off, avoids surging phenomenon's emergence.

In order to solve the problems, the following technical scheme is provided:

the utility model discloses a compressor pressure shell includes the casing, has air inlet portion and the portion of giving vent to anger on this casing. The air return structure is characterized in that an air return cavity is formed in the top of the shell, and one side of the air return cavity is communicated with an inner cavity of the air inlet part. A communicating opening is formed between the bottom of the air return cavity and the inner cavity of the air outlet part, and a pressure release valve is arranged on the communicating opening.

A connecting port is arranged between the top of the air return cavity above the communicating port and the top of the shell, the pressure release valve comprises a valve cover and a valve body, the valve cover is positioned above the connecting port, and the periphery of the valve cover is connected with the top of the shell around the connecting port; the valve body is cylindrical, the opening of the valve body is upward, the cylinder wall of the valve body comprises an outer rubber layer and an inner metal layer, the valve body and the connecting port are concentrically arranged, the outer rubber layer on the side wall of the valve body is integrally connected with an annular rubber edge, and the outer edge of the annular rubber edge is fixed between the valve cover and the top of the shell around the connecting port; the valve gap has the center tube, and the upper end of center tube is located the valve gap top, and the lower extreme of center tube sets up in the valve body with one heart, and the valve body bottom that the center tube corresponds is fixed with the guide post with one heart, and the upper end of guide post is that the form that slides inserts in the center tube, has compression spring between valve cap bottom and the valve body, and compression cover spring overlaps on the center tube, and compression cover spring is under the state of relaxing, the bottom of valve body with the intercommunication mouth offsets, and the relief valve is in the closed condition.

The valve cover is connected with the top of the shell through a screw.

By adopting the scheme, the method has the following advantages:

because the utility model discloses a there is the return air chamber at the top of the casing of compressor pressure shell, one side in return air chamber is linked together with the inner chamber of portion of admitting air, has the intercommunication mouth between the bottom in return air chamber and the inner chamber of portion of giving vent to anger, has the relief valve on the intercommunication mouth. When the automobile exhaust valve is used, the air outlet part is connected with an air inlet throttle valve of an automobile engine, and the pressure release valve is connected with an automobile driving mechanism. When the automobile air compressor air inlet throttle valve opening device works, when a sensor of an automobile detects that the pressure of the connecting part of the air compressor air outlet part and the engine air inlet throttle valve is too high or the air inlet throttle valve of the engine is closed, the automobile driving mechanism controls the pressure release valve to open, high-pressure air enters the air inlet part through the air return cavity, the high-pressure air is prevented from returning to the air compressor impeller, the air compressor impeller can normally rotate, and the vibration and loosening faults of the impeller are avoided. Moreover, the high-pressure gas enters the gas inlet part, so that the gas inlet amount can be ensured, and the surge phenomenon is avoided.

Drawings

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

fig. 2 is a schematic diagram of the state of the compressor pressing shell of the present invention during pressure relief.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the air return chamber 3 has one side of the air return chamber 3 communicated with the inner cavity of the air inlet portion 8. A communication port 12 is arranged between the bottom of the air return cavity 3 and the inner cavity of the air outlet part 1, and a pressure release valve is arranged on the communication port 12. A connecting port 5 is arranged between the top of the air return cavity 3 above the communicating port 12 and the top of the shell 2, the pressure release valve comprises a valve cover 4 and a valve body, the valve cover 4 is positioned above the connecting port 5, and the periphery of the valve cover 4 is connected with the top of the shell 2 around the connecting port 5 through screws 9. The valve body is cylindrical, the opening of the valve body is upward, the cylindrical wall of the valve body comprises an outer rubber layer 102 and an inner metal layer 101, the valve body and the connecting port 5 are concentrically arranged, the outer rubber layer 102 on the side wall of the valve body is integrally connected with an annular rubber edge 13, and the outer edge of the annular rubber edge 13 is fixed between the valve cover 4 and the top of the shell 2 around the connecting port 5; valve gap 4 has center tube 7, and the upper end of center tube 7 is located valve gap 4 top, and the lower extreme of center tube 7 sets up in the valve body with one heart, and the valve body bottom that center tube 7 corresponds is fixed with guide post 11 with one heart, and the upper end of guide post 11 is in sliding form and inserts in center tube 7, has compression spring 6 between valve gap 4 bottom and the valve body, and compression cover spring cover is on center tube 7, and compression cover spring is under the state of relaxing, the bottom of valve body with intercommunication mouth 12 offsets, and the relief valve is in the closed condition.

When in use, the air outlet part 1 is connected with an air inlet throttle valve of an automobile engine, and the central pipe 7 is connected with an automobile driving mechanism 14. When the automobile air inlet valve works, when the sensor 15 of the automobile detects that the pressure at the connecting part of the air outlet part 1 of the air compressor and the air inlet throttle valve of the engine is too high or the air inlet throttle valve of the engine is closed, the automobile driving mechanism 14 provides negative pressure into the central pipe 7, so that the valve body moves upwards, the pressure relief valve is opened, and high-pressure air enters the air inlet part 8 through the air return cavity 3, as shown in fig. 2. When the sensor 15 of the automobile detects that the air inlet throttle of the engine is opened, the automobile driving mechanism 14 stops transmitting negative pressure to the central pipe 7, and the valve body is reset under the action of the compression spring 6.

Claims

1. A compressor pressure shell comprises a shell (2), wherein an air inlet part (8) and an air outlet part (1) are arranged on the shell (2); the air return device is characterized in that the top of the shell (2) is provided with an air return cavity (3), and one side of the air return cavity (3) is communicated with the inner cavity of the air inlet part (8); a communicating opening (12) is formed between the bottom of the air return cavity (3) and the inner cavity of the air outlet part (1), and a pressure release valve is arranged on the communicating opening (12).

2. The compressor pressure shell according to claim 1, characterized in that a connecting port (5) is arranged between the top of the air return cavity (3) above the communication port (12) and the top of the shell (2), the pressure relief valve comprises a valve cover (4) and a valve body, the valve cover (4) is positioned above the connecting port (5), and the periphery of the valve cover (4) is connected with the top of the shell (2) around the connecting port (5); the valve body is cylindrical, the opening of the valve body faces upwards, the cylindrical wall of the valve body comprises an outer rubber layer (102) and an inner metal layer (101), the valve body and the connecting port (5) are concentrically arranged, the outer rubber layer (102) on the side wall of the valve body is integrally connected with an annular rubber edge (13), and the outer edge of the annular rubber edge (13) is fixed between the valve cover (4) and the top of the shell (2) around the connecting port (5); valve gap (4) have center tube (7), and the upper end of center tube (7) is located valve gap (4) top, and the lower extreme of center tube (7) sets up in the valve body with one heart, and the valve body bottom that center tube (7) correspond is fixed with guide post (11) with one heart, and the upper end of guide post (11) is in the slip form inserts center tube (7), and there is compression spring (6) valve gap (4) bottom and valve body, and compression set spring cover is on center tube (7), and compression set spring is under the relaxed state, the bottom of valve body with intercommunication mouth (12) offset, and the relief valve is in the closed condition.

3. Compressor pressure shell according to claim 2, characterised in that the valve cover (4) is connected to the top of the housing (2) by means of screws (9).