CN210564757U

CN210564757U - Supercharger of variable-geometry-section turbine

Info

Publication number: CN210564757U
Application number: CN201921482369.5U
Authority: CN
Inventors: 封树德; 王晓华
Original assignee: Chongqing Bofan Turbine Wheel Power Equipment Co ltd
Current assignee: Chongqing Bofan Turbine Wheel Power Equipment Co ltd
Priority date: 2019-09-07
Filing date: 2019-09-07
Publication date: 2020-05-19
Anticipated expiration: 2029-09-07

Abstract

The utility model is suitable for a turbo charger technical field provides a but booster of variable geometry cross section turbine, including pressure boost subassembly and variable cross section subassembly, pressure boost subassembly includes casing, air intlet, air outlet, axle, compressor impeller, turbine wheel, nozzle cascade blade, exhaust gas outlet and exhaust gas inlet, and air intlet sets up in the inner chamber left side of casing, and air outlet sets up in the left side top of casing; the ventilation pipe, the air blocking blade and the rotating shaft are arranged, so that the flow cross section of the inner cavity of the ventilation pipe can be changed when the air blocking blade rotates, the flow cross section of the inner cavity of the ventilation pipe is reduced in the low-speed process of the engine, the power-applying capacity of the engine is increased, the air supply amount at low speed is increased, the low-speed torque characteristic of the engine is obviously improved, the acceleration performance of the engine is improved, the flow cross section of the inner cavity of the ventilation pipe is enlarged in the low-speed process of the engine, and the problems of overspeed of a supercharger and overpressure of explosion pressure of a cylinder.

Description

Supercharger of variable-geometry-section turbine

Technical Field

The utility model belongs to the technical field of turbo charger, especially, relate to a booster of variable geometric section turbine.

Background

The turbocharger is actually an air compressor that increases the intake air amount by compressing air. The engine uses the inertia impulse force of the exhaust gas from the engine to push the turbine in the turbine chamber, the turbine drives the coaxial impeller, the impeller presses the air sent by the air filter pipeline, and the air is pressurized and enters the 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.

The traditional turbocharger is easy to have insufficient air supply when an engine works at a low speed, so that the work capacity of the engine is reduced, the air supply quantity when the engine works at a high speed is large, and the overspeed of the turbocharger and the overpressure of the explosion pressure of an air cylinder are caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a but booster of variable geometry cross section turbine aims at solving traditional turbo charger and appears the air feed not enough easily at engine low speed during operation, and then causes the air feed volume that engine acting capacity descends and the high-speed during operation of engine appears great, causes the problem of booster overspeed and cylinder explosion pressure superpressure.

The utility model is realized in such a way, the supercharger of a variable geometry section turbine comprises a supercharging component and a variable section component, the supercharging component comprises a shell, an air inlet, an air outlet, a shaft, a compressor impeller, a turbine impeller, a nozzle ring blade, a waste gas outlet and a waste gas inlet, the air inlet is arranged at the left side of an inner cavity of the shell, the air outlet is arranged at the top end of the left side of the shell, the air inlet is communicated with the air outlet, the waste gas outlet is arranged at the right side of the inner cavity of the shell, the waste gas inlet is integrally formed with the shell and is positioned at the right side of the bottom end of the shell, the waste gas inlet is communicated with the waste gas outlet, the shaft is rotatably connected with the shell and is positioned in the inner cavity of the shell, the compressor impeller is fixedly connected with the shaft and is positioned in the inner cavity of the air inlet, the nozzle, and are uniformly arranged around the outer side of the nozzle ring blade at equal intervals;

variable cross section subassembly includes the breather pipe, the apparatus further comprises a rotating shaft, keep off the gas leaf, the connecting rod, including a motor, an end cap, a controller, and a cover plate, the breather pipe and waste gas import fixed connection, and be located the bottom of waste gas import, the pivot rotates with the breather pipe to be connected, and even equidistant setting is around the lateral wall of breather pipe, keep off gas leaf and pivot fixed connection, and even equidistant setting is in the inner chamber of breather pipe, the connecting rod with keep off gas leaf fixed connection, and be located the one end that keeps off the gas leaf and keep away from the pivot, the traction piece rotates with the connecting rod to be connected, and be located the connecting rod and keep away from the one end that keeps off the gas leaf, the traction rod rotates with the traction piece to be connected.

Preferably, the variable cross-section assembly further comprises a draw bar, the draw bar is fixedly connected with the vent pipe and sleeved outside the vent pipe, and the motor is fixedly connected with the draw bar and located in an inner cavity of the draw bar.

Preferably, the variable cross-section assembly further comprises a flange, and the flange is fixedly connected with the vent pipe and is located at one end, far away from the waste gas inlet, of the vent pipe.

Preferably, the air blocking blade is of a fan-shaped structure.

Preferably, the radius of the air blocking vane is the same as the inner diameter of the ventilation pipe.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a but booster of variable geometry cross section turbine, through setting up the breather pipe, keep off gas leaf and pivot, when making to keep off the gas leaf and rotate, can change the flow cross section of breather pipe inner chamber, at the in-process of engine low speed, reduce the flow cross section of breather pipe inner chamber, increase the power doing ability of engine, air supply when improving the low speed, thereby obviously improve engine low-speed torque characteristic and improve engine acceleration performance, at the in-process of engine low speed, enlarge the flow cross section of breather pipe inner chamber, avoid the problem of booster hypervelocity and cylinder outbreak pressure superpressure.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a top view of the structure of the variable cross-section module of the present invention;

fig. 3 is a schematic view of the structure of the traction rod of the present invention.

In the figure: 1-a supercharging component, 11-a shell, 12-an air inlet, 13-an air outlet, 14-a shaft, 15-a compressor impeller, 16-a turbine impeller, 17-a nozzle ring blade, 18-an exhaust gas outlet, 19-an exhaust gas inlet, 2-a variable cross section component, 21-a vent pipe, 22-a rotating shaft, 23-a gas blocking blade, 24-a connecting rod, 25-a motor, 26-a traction rod, 27-a sleeve box, 28-a flange and 29-a traction block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present invention provides a technical solution: a supercharger of a variable geometry section turbine comprises a supercharging component 1 and a variable section component 2, wherein the supercharging component 1 comprises a shell 11, an air inlet 12, an air outlet 13, a shaft 14, a compressor impeller 15, a turbine impeller 16, a nozzle ring blade 17, a waste gas outlet 18 and a waste gas inlet 19, the air inlet 12 is arranged on the left side of an inner cavity of the shell 11, the air outlet 13 is arranged on the top end of the left side of the shell 11, the air inlet 12 is communicated with the air outlet 13, the waste gas outlet 18 is arranged on the right side of the inner cavity of the shell 11, the waste gas inlet 19 is integrally formed with the shell 11 and is positioned on the right side of the bottom end of the shell 11, the waste gas inlet 19 is communicated with the waste gas outlet 18, the shaft 14 is rotatably connected with the shell 11 and is positioned in the inner cavity of the shell 11, the compressor impeller 15 is fixedly connected with the shaft 14 and, the turbine impeller 16 is fixedly connected with the nozzle ring blades 17 and is uniformly and equidistantly arranged on the periphery of the outer side of the nozzle ring blades 17;

the variable cross-section component 2 comprises a vent pipe 21, a rotating shaft 22, a gas blocking vane 23, a connecting rod 24, a motor 25, a traction rod 26 and a traction block 29, the vent pipe 21 is fixedly connected with a waste gas inlet 19 and is positioned at the bottom end of the waste gas inlet 19, the rotating shaft 22 is rotatably connected with the vent pipe 21, the traction rod is uniformly and equidistantly arranged on the periphery of the outer side wall of the vent pipe 21, the gas blocking vane 23 is fixedly connected with the rotating shaft 22, the gas blocking vane is uniformly and equidistantly arranged in an inner cavity of the vent pipe 21, the connecting rod 24 is fixedly connected with the gas blocking vane 23 and is positioned at one end, far away from the rotating shaft 22, of the gas blocking vane 23, the traction block 29 is rotatably connected with the connecting rod 24 and is positioned at one end, far away from the gas blocking vane 23, the traction rod 26 is rotatably connected with the traction block 29 and is.

In the present embodiment, by providing the vent pipe 21, the air blocking vane 23 and the rotating shaft 22, the vent pipe 21 can guide the exhaust gas to the inner cavity of the exhaust gas inlet 19, so that the exhaust gas drives the turbine impeller 16 and the nozzle ring vane 17 to rotate, further drives the compressor impeller 15 to rotate by the driving shaft 14, so as to suck air from the air inlet 12 and pressurize the air, so as to increase the air intake amount, when the air blocking vane 23 rotates, the flow cross-sectional area of the inner cavity of the vent pipe 21 can be changed, so that when the engine is at a low speed, the flow cross-sectional area of the inner cavity of the vent pipe 21 is reduced, the power-applying capacity of the engine is increased, the air supply amount at a low speed is increased, so as to significantly improve the low-speed torque characteristic of the engine and the acceleration performance of the engine, when the engine is at a high speed, the flow cross-sectional area of the inner, when one group of air blocking blades 23 rotate, the draw bar 26 can synchronously rotate with the adjacent group of connecting rods 24 and air blocking blades 23, so that each group of air blocking blades 23 and the rotating shaft 22 synchronously rotate.

Further, the variable cross-section assembly 2 further comprises a draw bar 27, the draw bar 27 is fixedly connected with the vent pipe 21 and sleeved outside the vent pipe 21, and the motor 25 is fixedly connected with the draw bar 27 and located in an inner cavity of the draw bar 27.

In the present embodiment, the traction rod 27 can effectively store the motor 25, the connecting rod 24, the traction block 29 and the traction rod 26, and the influence of the outside on the transmission between the groups of air blocking vanes 23 is avoided.

Further, the variable cross-section assembly 2 further includes a flange 28, and the flange 28 is fixedly connected to the vent pipe 21 and is located at an end of the vent pipe 21 away from the waste gas inlet 19.

In this embodiment, the flange 28 may facilitate connection with an exhaust port of the engine.

Further, the air blocking vane 23 is in a fan-shaped structure, and the radius of the air blocking vane 23 is the same as the inner diameter of the vent pipe 21.

In the present embodiment, the inner cross section of the ventilation pipe 21 can be blocked by rotating each set of the air blocking vanes 23 to be horizontal.

The utility model discloses a theory of operation and use flow: after the utility model is installed, the flange 28 is connected with the exhaust port of the transmitter, when the engine works, the generated waste gas flows to the inner cavity of the waste gas inlet 19 through the vent pipe 21 and drives the turbine impeller 16 and the nozzle ring blade 17 to rotate, then the waste gas is discharged from the waste gas outlet 18, when the nozzle ring blade 17 rotates, the compressor impeller 15 is driven to rotate through the shaft 14, further the air is sucked into the inner cavity of the air inlet 12 and pressurized, and finally the air is discharged into the cylinder of the engine through the air outlet 13, when the engine is at low speed, the motor 25 is started and drives a group of rotating shafts 22 to rotate, and simultaneously, through the connecting rod 24, the traction block 29 and the traction rod 26 synchronously pull each group of air blocking blades 23 and the rotating shafts 22 to synchronously rotate, so that each group of rotating shafts 22 rotates to tend to be level with the flange 28, so as to reduce the flow sectional area of the inner cavity of the vent pipe 21, when the engine is in high speed, the motor 25 is started and drives the group of rotating shafts 22 to rotate, and simultaneously, the connecting rod 24, the traction block 29 and the traction rod 26 synchronously pull the groups of air blocking vanes 23 and the rotating shafts 22 to synchronously rotate, so that the groups of rotating shafts 22 rotate to be vertical to the flange 28, the flow cross section area of the inner cavity of the vent pipe 21 is enlarged, and overspeed of a supercharger and explosion pressure overpressure of a cylinder are avoided.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A supercharger for a variable geometry turbine, characterized in that: comprises a supercharging component (1) and a variable cross-section component (2), wherein the supercharging component (1) comprises a shell (11), an air inlet (12), an air outlet (13), a shaft (14), a compressor impeller (15), a turbine impeller (16), nozzle ring blades (17), a waste gas outlet (18) and a waste gas inlet (19), the air inlet (12) is arranged on the left side of an inner cavity of the shell (11), the air outlet (13) is arranged at the top end of the left side of the shell (11), the air inlet (12) is communicated with the air outlet (13), the waste gas outlet (18) is arranged on the right side of the inner cavity of the shell (11), the waste gas inlet (19) and the shell (11) are integrally formed and are positioned on the right side of the bottom end of the shell (11), the waste gas inlet (19) is communicated with the waste gas outlet (18), the shaft (14) is rotatably connected with the shell (11) and is positioned, the compressor impeller (15) is fixedly connected with the shaft (14) and is positioned in an inner cavity of the air inlet (12), the nozzle ring blades (17) are fixedly connected with the shaft (14) and are positioned at one end of the shaft (14) far away from the compressor impeller (15), the turbine impeller (16) is fixedly connected with the nozzle ring blades (17) and is uniformly arranged around the outer side of the nozzle ring blades (17) at equal intervals;

the variable cross-section assembly (2) comprises a vent pipe (21), a rotating shaft (22), a gas blocking vane (23), a connecting rod (24), a motor (25), a traction rod (26) and a traction block (29), wherein the vent pipe (21) is fixedly connected with a waste gas inlet (19) and is positioned at the bottom end of the waste gas inlet (19), the rotating shaft (22) is rotatably connected with the vent pipe (21) and is uniformly and equidistantly arranged on the periphery of the outer side wall of the vent pipe (21), the gas blocking vane (23) is fixedly connected with the rotating shaft (22) and is uniformly and equidistantly arranged in an inner cavity of the vent pipe (21), the connecting rod (24) is fixedly connected with the gas blocking vane (23) and is positioned at one end, far away from the rotating shaft (22), of the traction block (29) is rotatably connected with the connecting rod (24) and is positioned at one end, far away from the gas blocking vane (23), of the traction rod (26) is rotatably connected with the, and is positioned between two adjacent groups of traction blocks (29), and the output end of the motor (25) is fixedly connected with the rotating shaft (22) and is positioned at the outer side of the vent pipe (21).

2. A turbocharger for a variable geometry turbine according to claim 1, wherein: the variable cross-section assembly (2) further comprises a traction rod (27), the traction rod (27) is fixedly connected with the vent pipe (21) and sleeved on the outer side of the vent pipe (21), and the motor (25) is fixedly connected with the traction rod (27) and located in an inner cavity of the traction rod (27).

3. A turbocharger for a variable geometry turbine according to claim 1, wherein: the variable cross-section assembly (2) further comprises a flange (28), the flange (28) is fixedly connected with the vent pipe (21) and is positioned at one end, far away from the waste gas inlet (19), of the vent pipe (21).

4. A turbocharger for a variable geometry turbine according to claim 1, wherein: the air blocking blade (23) is in a fan-shaped structure.

5. A turbocharger for a variable geometry turbine according to claim 1, wherein: the radius of the air baffle vane (23) is the same as the inner diameter of the vent pipe (21).