阅读说明：本技术 一种涡轮增压器控压阀及其工作方法 (Turbocharger pressure control valve and working method thereof ) 是由 程显东 王田 周康 于 2020-08-19 设计创作，主要内容包括：本发明涉及涡轮增压器技术领域,特别涉及一种涡轮增压器控压阀,安装在涡轮增压器的压气机壳的开孔上,控压阀包括由V型夹紧箍带夹紧扣合的外半壳和内半壳以及弹簧组件；内半壳与涡轮增压器的开孔相通；外半壳包括阀盖和出气嘴,阀盖中心开通孔并与出气嘴连通,阀盖中心内侧加工成圆柱体凸起的弹簧卡台；弹簧的一端套卡在弹簧卡台外,另一端卡在弹簧盒的内部,弹簧盒固定插在半球形阀芯内,半球形阀芯的半球端在弹簧的推力下堵住压气机壳的开孔。本发明控压阀由弹簧组件动态调节,弹簧带动半球形阀芯的弹起压力预先设定,可以实现准确调节开闭及开启程度,使涡轮增压器内部的空气始终维持在一个适合的高压水平。(The invention relates to the technical field of turbochargers, in particular to a turbocharger pressure control valve which is arranged on an opening of a compressor shell of a turbocharger and comprises an outer half shell, an inner half shell and a spring assembly, wherein the outer half shell and the inner half shell are clamped and buckled by a V-shaped clamping strap; the inner half shell is communicated with an opening of the turbocharger; the outer half shell comprises a valve cover and an air outlet nozzle, a through hole is formed in the center of the valve cover and is communicated with the air outlet nozzle, and the inner side of the center of the valve cover is processed into a cylindrical raised spring clamping table; one end of the spring is sleeved outside the spring clamping table, the other end of the spring is clamped inside the spring box, the spring box is fixedly inserted into the hemispherical valve core, and the hemispherical end of the hemispherical valve core plugs the opening of the compressor shell under the thrust of the spring. The pressure control valve is dynamically regulated by the spring assembly, the spring drives the bounce pressure of the hemispherical valve core to be preset, the opening and closing and the opening degree can be accurately regulated, and the air in the turbocharger is always kept at a proper high pressure level.)

1. A turbocharger pressure control valve characterized by: the pressure control valve is arranged on an opening of a compressor shell of the turbocharger and comprises an outer half shell, an inner half shell and a spring assembly, wherein the outer half shell and the inner half shell are clamped and buckled by a V-shaped clamping strap; the inner half shell is communicated with an opening of the turbocharger; the outer half shell comprises a valve cover and an air outlet nozzle, a through hole is formed in the center of the valve cover and is communicated with the air outlet nozzle, and the inner side of the center of the valve cover is processed into a cylindrical raised spring clamping table; the spring assembly comprises a hemispherical valve core, a spring and a spring box, one end of the spring is sleeved and clamped outside the spring clamping table, the other end of the spring is clamped inside the spring box, the spring box is fixedly inserted into the hemispherical valve core, and the hemispherical end of the hemispherical valve core plugs the opening of the compressor shell under the thrust of the spring.

2. The turbocharger pressure control valve of claim 1, wherein: and when the hemispherical valve core is pushed by a spring to plug the opening of the compressor shell, the hemispherical valve core and the shell wall of the inner half shell are sealed by the rubber O-shaped sealing ring.

3. The turbocharger pressure control valve of claim 1, wherein: the buckling boundary of the outer half shell and the inner half shell in the V-shaped clamping band is connected through an asbestos sealing gasket.

4. The turbocharger pressure control valve of claim 1, wherein: the spring drives the bounce pressure of the hemispherical valve core to be preset.

5. A working method of a turbocharger pressure control valve is characterized in that: air enters from the air inlet, when the pressure of airflow in the turbocharger exceeds a preset value of bounce pressure, a part of air flows normally under the drive of the impeller and is discharged from the air outlet; the redundant high-pressure air jacks the hemispherical valve core inwards, the spring is compressed, and the pressure control valve is in an open state; high-pressure air flows into the outer half shell from the inner half shell from a gap close to one side of the compressor shell, redundant high-pressure air is discharged through the air outlet nozzle, the internal air of the turbocharger and the pressure control valve is maintained at a proper high-pressure level, and after the internal air flow pressure of the turbocharger is rebalanced, the pressure control valve falls back under the thrust action of the spring to block the opening of the compressor shell again; when the pressure of the airflow in the turbocharger does not reach the preset value of the bounce pressure, air enters from the air inlet, flows normally under the drive of the impeller and is discharged from the air outlet; the hemispherical valve core is not touched, the pressure control valve is in a closed state, and air is maintained at a proper high pressure level in the turbocharger.

Technical Field

The invention relates to the technical field of turbochargers, in particular to a turbocharger pressure control valve and a working method thereof.

Background

The turbocharger increases air inflow by compressing air, and utilizes the inertia impulse force of exhaust gas discharged by an engine to push a turbine in a turbine chamber, the turbine drives a coaxial impeller, and the impeller pumps air sent by an air filter pipeline to pressurize the air to enter an air cylinder. When the rotating speed of the engine is increased, the exhaust gas exhaust speed and the rotating speed of the turbine are also increased synchronously, the impeller compresses more air to enter the air cylinder, the pressure and the density of the air are increased, more fuel can be combusted, and the output power of the engine can be increased by correspondingly increasing the fuel quantity and adjusting the rotating speed of the engine. However, the pressure of air is too high to easily explode, once the pressure is forcibly increased, the temperature and the pressure of the gasoline engine during compression and combustion are increased, the explosion tendency is increased, and therefore, the controlled pressurization is very important.

Disclosure of Invention

In order to solve the technical problem, the invention discloses a turbocharger pressure control valve and a working method thereof.

The specific technical scheme is as follows:

a turbocharger pressure control valve is mounted on an opening of a compressor shell of a turbocharger and comprises an outer half shell, an inner half shell and a spring assembly, wherein the outer half shell and the inner half shell are clamped and buckled by a V-shaped clamping strap; the inner half shell is communicated with an opening of the turbocharger; the outer half shell comprises a valve cover and an air outlet nozzle, a through hole is formed in the center of the valve cover and is communicated with the air outlet nozzle, and the inner side of the center of the valve cover is processed into a cylindrical raised spring clamping table; the spring assembly comprises a hemispherical valve core, a spring and a spring box, one end of the spring is sleeved and clamped outside the spring clamping table, the other end of the spring is clamped inside the spring box, the spring box is fixedly inserted into the hemispherical valve core, and the hemispherical end of the hemispherical valve core plugs the opening of the compressor shell under the thrust of the spring.

And when the hemispherical valve core is pushed by a spring to plug the opening of the compressor shell, the hemispherical valve core and the shell wall of the inner half shell are sealed by the rubber O-shaped sealing ring.

The V-shaped clamping hoop is provided with an inner half shell, an outer half shell and an inner half shell which are buckled and connected through an asbestos sealing gasket.

The spring drives the bounce pressure of the hemispherical valve core to be preset.

A work method of turbocharger pressure control valve, air enters from air inlet, when the pressure of air flow in the turbocharger exceeds the preset value of bounce pressure, a part of air flows normally under the drive of impeller, and is discharged from air outlet; the redundant high-pressure air jacks the hemispherical valve core inwards, the spring is compressed, and the pressure control valve is in an open state; high-pressure air flows into the outer half shell from the inner half shell from a gap close to one side of the compressor shell, redundant high-pressure air is discharged through the air outlet nozzle, the internal air of the turbocharger and the pressure control valve is maintained at a proper high-pressure level, and after the internal air flow pressure of the turbocharger is rebalanced, the pressure control valve falls back under the thrust action of the spring to block the opening of the compressor shell again; when the pressure of the airflow in the turbocharger does not reach the preset value of the bounce pressure, air enters from the air inlet, flows normally under the drive of the impeller and is discharged from the air outlet; the hemispherical valve core is not touched, the pressure control valve is in a closed state, and air is maintained at a proper high pressure level in the turbocharger.

Compared with the prior art, the invention has the following beneficial technical effects:

the pressure control valve is dynamically regulated by the spring assembly, the spring drives the bounce pressure of the hemispherical valve core to be preset, the opening and closing and the opening degree can be accurately regulated, and the air in the turbocharger is maintained at a proper high pressure level. The semi-spherical valve core is sleeved with a rubber O-shaped sealing ring, when the semi-spherical valve core is pushed by a spring to block the open hole of the compressor shell, the semi-spherical valve core and the shell wall of the inner half shell are sealed by the rubber O-shaped sealing ring, the air tightness is ensured when the opening and closing of the pressure control valve are switched, the buckling boundary of the inner half shell and the outer half shell of the V-shaped clamping hoop is connected by an asbestos sealing gasket, the flame retardance and the air tightness in the turbocharger are further ensured,

drawings

FIG. 1 is a schematic view of an installation structure of a pressure control valve according to the present invention;

FIG. 2 is a schematic view of the internal structure of the pressure control valve according to the present invention;

FIG. 3 is a schematic structural diagram of the pressure control valve of the present invention;

FIG. 4 is a schematic view illustrating an opening state of the pressure control valve according to the present invention;

FIG. 5 is a schematic view illustrating a closed state of the pressure control valve according to the present invention;

FIG. 6 is a schematic diagram of the operation of the pressure control valve of the present invention;

in the figure, 1-compressor casing; 2-an impeller; 3-pressure control valve; 4-air inlet; 5-air outlet; 6-a hemispherical valve core; 7-rubber O-ring seal; 8-asbestos sealing gaskets; 9-V-shaped clamping bands; 10-valve cover; 11-air outlet nozzle; 12-a spring; 13-a spring case; 14 — an outer half shell; 15-an inner half shell; 16-spring clamping table.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the drawings.

Fig. 1 is a schematic view of an installation structure of a pressure control valve of the present invention, fig. 2 is a schematic view of an installation internal structure of the pressure control valve of the present invention, and fig. 3 is a schematic view of a structure of the pressure control valve of the present invention, as shown in the drawings: the turbocharger pressure control valve 3 is arranged on an opening of a compressor shell 1 of the turbocharger, and the pressure control valve 3 comprises an outer half shell 14, an inner half shell 15 and a spring assembly which are clamped and buckled by a V-shaped clamping strap 9; the inner half-shell 15 communicates with the opening of the turbocharger; the outer half shell 14 comprises a valve cover 10 and an air outlet nozzle 11, a through hole is formed in the center of the valve cover 10 and is communicated with the air outlet nozzle 11, and a cylindrical raised spring clamping table 16 is processed on the inner side of the center of the valve cover 10; the spring assembly comprises a hemispherical valve core 6, a spring 12 and a spring box 13, one end of the spring 12 is sleeved outside the spring clamping table 16, the other end of the spring is clamped inside the spring box 13, the spring box 13 is inserted into the hemispherical valve core 6, and the opening of the compressor shell 1 is blocked by the hemispherical end of the hemispherical valve core 6 under the thrust of the spring.

The hemispherical valve core 6 is sleeved with a rubber O-shaped sealing ring 7, and when the hemispherical valve core 6 is pushed by a spring 12 to block the opening of the compressor shell 1, the hemispherical valve core 6 and the shell wall of the inner half shell 15 are sealed through the rubber O-shaped sealing ring 7. The outer and inner half-shells 14, 15 of the V-band 9 are snap-fit together at their interface by means of an asbestos-tight gasket 8. The spring 12 drives the hemispherical valve core 6 to have a preset bouncing pressure.

Fig. 4 is a schematic diagram showing the opening state of the pressure control valve according to the present invention, and fig. 6 is a schematic diagram showing the operation of the pressure control valve according to the present invention, as shown in the figure, air enters from the air inlet 4, and when the pressure of the air flow inside the turbocharger exceeds the preset value of the pop-up pressure, a part of the air flows normally under the driving of the impeller 2 and is discharged at the air outlet. The redundant high-pressure air jacks up the hemispherical valve core 6 inwards, the spring 12 is compressed, and the pressure control valve is in an open state. High-pressure air flows into outer half shell 15 from inner half shell 14 from the space that is close to compressor housing 1 one side to discharge unnecessary high-pressure gas through giving vent to anger mouth 11, the inside air of turbo charger and pressure control valve maintains at a suitable high-pressure level, and after turbo charger inside gas flow pressure rebalanced, the pressure control valve fell back under the thrust effort of spring, plugs up the trompil of compressor housing 1 again.

Fig. 5 is a schematic diagram showing the closed state of the pressure control valve according to the present invention, wherein when the pressure of the air flow inside the turbocharger does not reach the preset bounce pressure, the air enters from the air inlet 4, flows normally under the driving of the impeller 2, and is discharged from the air outlet. The hemispherical valve core 6 is not touched, the pressure control valve is in a closed state, and air is maintained at a proper high pressure level in the turbocharger.