CN210889106U

CN210889106U - Exhaust gas bypass mechanism of turbocharger

Info

Publication number: CN210889106U
Application number: CN201921272769.3U
Authority: CN
Inventors: 黄晓迪
Original assignee: Liaoning Shengke Power Technology Co ltd
Current assignee: Liaoning Shengke Power Technology Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-06-30
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a turbo charger exhaust gas bypass mechanism, including exhaust gas connecting pipe, exhaust gas turbine, connecting axle, air turbine, air intake pipe, compressed air pipe, external bypass valve, reset spring, pull rod and buffer spring, exhaust gas turbine is installed on the inside top of exhaust gas connecting pipe, and the left position department of exhaust gas turbine is provided with exhaust gas pipe, air turbine is installed on compressed air pipe's inside top, through connecting axle fixed connection between exhaust gas turbine and the air turbine. The utility model discloses a cooperation of built-in bypass valve and buffer board is used, through slider lateral sliding in the slide rail to and buffer spring's self elastic action, when exhaust gas discharges, the buffer board atress back slope can realize increaseing the aperture of built-in bypass valve, further increaseing the distance of built-in bypass valve and by-pass hole, and then reduce the downthehole exhaust of by-pass and to the impact force of valve, just can reduce noise level.

Description

Exhaust gas bypass mechanism of turbocharger

Technical Field

The utility model relates to a turbo charger equipment technical field specifically is a turbo charger waste gas bypass mechanism.

Background

In order to meet increasingly strict requirements of oil consumption and emission regulations and meet requirements of customers on power of an engine, the use of a turbocharged engine is more and more extensive, a turbocharger is basically provided with a waste gas bypass mechanism at present for controlling the energy of waste gas passing through a turbine and adjusting the output power and torque of the engine, when the conventional waste gas bypass mechanism is opened, metal impact noise which is easy to generate between a bypass valve and a bypass hole is caused by the impact force of exhaust pulses on the valve under the condition that the bypass valve is close to the bypass hole due to small opening of the waste gas bypass valve, so that the use of the whole device is influenced, and therefore, the waste gas bypass mechanism of the turbocharger is provided aiming at the problems.

Disclosure of Invention

An object of the utility model is to provide a turbo charger exhaust gas bypass mechanism to provide because the waste gate valve aperture is less in solving above-mentioned background art, under the nearer condition of bypass valve and bypass hole distance, exhaust pulse is to the impact force of valve, and leads to easily producing the problem of metal striking noise between bypass valve and the bypass hole.

In order to achieve the above object, the utility model provides a following technical scheme: a turbocharger waste gas bypass mechanism comprises a waste gas connecting pipe, a waste gas turbine, a connecting shaft, an air turbine, an air inlet pipe, a compressed air pipe, an external bypass valve, a reset spring, a pull rod and a buffer spring, wherein the waste gas turbine is installed at the top end inside the waste gas connecting pipe, a waste gas exhaust pipe is arranged at the left position of the waste gas turbine, the air turbine is installed at the top end inside the compressed air pipe, the air inlet pipe is arranged at the right position of the air turbine, the waste gas turbine and the air turbine are fixedly connected through the connecting shaft, a bypass pipe is arranged at the left position of the waste gas connecting pipe and communicated with the bypass pipe, the external bypass valve is welded on one side wall of the bypass pipe, the pull rod is welded inside the external bypass valve through the reset spring, and one end of the pull rod, which, the bottom inner wall and the pull rod of bypass pipe are articulated to be connected, the slide rail has been seted up to the bottom that the bypass pipe is close to exhaust-gas connection pipe one end, and the inside of slide rail is embedded to have a slider, the top welding of slider has built-in bypass valve, one side and the pull rod of built-in bypass valve are articulated to be connected, the opposite side welding of built-in bypass valve has the connecting rod, and the top of connecting rod articulates there is the buffer board, buffer board's a lateral wall passes through buffer spring and connecting rod top welded fastening, the top and the exhaust-gas line of bypass pipe are linked together, the inside pressfitting in left side of exhaust-gas line has the divergent pipe, and the one.

Preferably, filter equipment includes swivelling chute, active carbon adsorption net and rotatory piece, the swivelling chute has been seted up to the inner wall of divergent pipe, the inside of swivelling chute is embedded to have rotatory piece, one side welding that the swivelling chute was kept away from to rotatory piece has the active carbon adsorption net.

Preferably, the front surface of the divergent pipe is provided with a notch matched with the rotating block.

Preferably, the inside position department on detection case right side is provided with the cavity, and the external plug has been placed to the inside of cavity, the back of detection case is provided with sealing door, and has seted up the preformed hole on the sealing door.

Preferably, all set up the preformed hole of mutually supporting on rotatory piece and the swivelling chute, and the inside embedded locking bolt that has of preformed hole.

Preferably, the diameters of the two ends of the divergent pipe are larger than the diameter of the middle of the divergent pipe, and the divergent pipe is in a trapezoid shape.

Compared with the prior art, the beneficial effects of the utility model are that: the turbocharger waste gas bypass mechanism adopts the matching use of the built-in bypass valve and the buffer plate, the buffer plate is stressed and then inclined through the transverse sliding of the sliding block in the sliding rail and the self elastic action of the buffer spring when waste gas is discharged, so that the opening degree of the built-in bypass valve can be enlarged, the distance between the built-in bypass valve and a bypass hole can be further enlarged, the impact force of the exhaust gas in the bypass hole on the valve can be further reduced, and the noise level can be reduced;

through filter equipment's use, the harmful substance of doping in the effectual absorption waste gas, and the cooperation through swivelling chute and rotatory piece is used, make things convenient for the dismantlement operation of active carbon adsorption net, and simultaneously, design through ladder style of calligraphy divergent pipe, make the waste gas that gets into divergent pipe all reduce the process that increases suddenly again through the pipe diameter, make waste gas increase earlier the reducing again to the pressure of divergent pipe, and then produce the pressure differential, this pressure differential can accelerate waste gas, make the velocity of flow in the less passageway of pipe diameter of waste gas is slower, and the velocity of flow is faster in the thicker passageway of pipe diameter, make waste gas can not influence waste gas exhaust's efficiency by the filterable while of active carbon adsorption net, and the structure is comparatively novel, the design is dexterous, safety, reliability, especially adapted popularization and application in practical application.

Drawings

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

fig. 2 is a schematic view of the structure of the present invention in a closed state;

fig. 3 is an enlarged schematic view of the structure a in fig. 1 according to the present invention;

fig. 4 is a schematic side view of the filtering device of the present invention.

In the figure: 1. an exhaust gas connecting pipe; 2. an exhaust gas turbine; 3. a connecting shaft; 4. an air turbine; 5. an air inlet pipe; 6. a compressed air pipe; 7. a bypass pipe; 8. an external bypass valve; 9. a return spring; 10. a pull rod; 11. a bypass valve is arranged inside; 12. a connecting rod; 13. a buffer plate; 14. a buffer spring; 15. a slider; 16. a slide rail; 17. a filtration device; 171. a rotating tank; 172. an activated carbon adsorption net; 173. rotating the block; 18. an exhaust gas pipe; 19. a divergent pipe.

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. 1-4, the present invention provides an embodiment: a turbocharger waste gas bypass mechanism comprises a waste gas connecting pipe 1, a waste gas turbine 2, a connecting shaft 3, an air turbine 4, an air inlet pipe 5, a compressed air pipe 6, an external bypass valve 8, a reset spring 9, a pull rod 10 and a buffer spring 14, wherein the waste gas turbine 2 is installed at the top end inside the waste gas connecting pipe 1, a waste gas exhaust pipe 18 is arranged at the left side of the waste gas turbine 2, the air turbine 4 is installed at the top end inside the compressed air pipe 6, the air inlet pipe 5 is arranged at the right side of the air turbine 4, the waste gas turbine 2 is fixedly connected with the air turbine 4 through the connecting shaft 3, a bypass pipe 7 is arranged at the left side position of the waste gas connecting pipe 1, the waste gas connecting pipe 1 is communicated with the bypass pipe 7, the external bypass valve 8 is welded on one side wall of the bypass pipe 7, the one end that external bypass valve 8 was kept away from to pull rod 10 runs through external bypass valve 8 and bypass pipe 7 in proper order, the bottom inner wall and the pull rod 10 of bypass pipe 7 are articulated to be connected, slide rail 16 has been seted up to the bottom that bypass pipe 7 is close to exhaust gas connecting pipe 1 one end, and slide rail 16's inside is embedded to have slider 15, the top welding of slider 15 has built-in bypass valve 11, one side and the pull rod 10 of built-in bypass valve 11 are articulated to be connected, connecting rod 12 has been welded to the opposite side of built-in bypass valve 11, and the top of connecting rod 12 articulates there is buffer plate 13, the length of buffer plate 13 is greater than the length of built-in bypass valve 11, the through-hole department that the buffer plate 13 top is close to exhaust gas connecting pipe 1 sets up.

One side wall of buffer board 13 passes through buffer spring 14 and connecting rod 12 top welded fastening, the top and the exhaust-gas discharge pipe 18 of bypass pipe 7 are linked together, the inside pressfitting in left side of exhaust-gas discharge pipe 18 has divergent pipe 19, and divergent pipe 19 keeps away from the one end of exhaust-gas discharge pipe 18 and installs filter equipment 17, the both ends diameter that divergent pipe 19 set up is greater than middle diameter, divergent pipe 19 sets up to the trapezoidal form, when waste gas gets into divergent pipe 19, waste gas all reduces the process that suddenly increases through the pipe diameter again, make waste gas to the pressure increase of divergent pipe 19 earlier then reduce, and then produce the pressure differential, this pressure differential can accelerate waste gas, it is slower to make the velocity of flow in the less passageway of pipe diameter at waste gas, and the velocity of flow is faster in the passageway of pipe diameter, make waste gas can not influence waste gas exhaust efficiency when being filtered by active carbon adsorption net 172 thicker.

The filtering device 17 comprises a rotating groove 171, an activated carbon adsorption net 172 and a rotating block 173, the inner wall of the divergent pipe 19 is provided with the rotating groove 171, the rotating block 173 is embedded in the rotating groove 171, one side of the rotating block 173 far away from the rotating groove 171 is welded with the activated carbon adsorption net 172, the front surface of the divergent pipe 19 is provided with a notch matched with the rotating block 173, the rotating block 173 and the rotating groove 171 are both provided with preformed holes matched with each other, and locking bolts are embedded in the preformed holes, as shown in fig. 4, when impurities on the activated carbon adsorption net 172 used for a long time are accumulated together, a worker can regularly unscrew the locking bolts from the preformed holes, the worker holds the activated carbon adsorption net 172 by hand through the rotating action of the rotating block 173 in the rotating groove 171 and rotates clockwise, so that the rotating block 173 stops rotating after being matched with the notch, and takes off the activated carbon adsorption net 172, finally, the activated carbon adsorption net 172 which is prepared in advance is put back.

The working principle is as follows: when the exhaust gas turbine is used, one end of the exhaust gas connecting pipe 1 is connected with an engine, when the engine works, exhaust gas discharged from the engine pushes an impeller at the exhaust end of the exhaust gas turbine 2 to rotate, so that the air turbine 4 at the other side connected with the exhaust gas turbine 2 through the connecting shaft 3 can be driven to rotate simultaneously, external air is forcibly sucked into the air inlet pipe 5 by the operation of the air turbine 4, the air is compressed by the rotation of the blades and then flows into the compressed air pipe 6, and the compressed air is injected into the cylinder to be combusted.

Once the supercharging value of the compressed air end of the exhaust gas turbine 2 reaches a limited degree, the pressure of the entering exhaust gas pushes the buffer plate 13, the buffer plate 13 transversely slides in the slide rail 16 through the slide block 15 and the self elastic force action of the buffer spring 14, the buffer plate 13 tilts after being stressed, when the pressure of the pressurized gas exhaust gas exceeds a specified value, the buffer plate 13 and the built-in bypass valve 11 are jacked away, then the pull rod 10 is controlled to move through the reset spring 9 and is opened, so that the built-in bypass valve 11 and the buffer plate 13 are opened, the exhaust gas flows out from a bypass hole, then the exhaust gas flows into the exhaust gas exhaust pipe 18, then the exhaust gas is filtered and adsorbed through the divergent pipe 19 and the activated carbon adsorption net 172, when the exhaust gas enters the divergent pipe 19, the exhaust gas all passes through the process that the pipe diameter is reduced and suddenly increased, so that the pressure of the exhaust gas on the divergent pipe 19 is increased and then, the flow velocity of the waste gas in the channel with the smaller pipe diameter is slower, the flow velocity in the channel with the thicker pipe diameter is faster, the waste gas can be filtered by the activated carbon adsorption net 172, meanwhile, the waste gas discharging efficiency cannot be influenced, and one-time exhaust operation can be completed.

When the impurity on the active carbon adsorption net 172 that uses for a long time can pile up together, the staff can regularly unscrew the locking bolt from the preformed hole, through rotatory piece 173 in the effect of rotary groove 171 internal rotation, the handheld active carbon adsorption net 172 of staff to clockwise rotation, make rotatory piece 173 and notch coincidence back, the rotation stop takes off active carbon adsorption net 172, will prepare in advance at last new active carbon adsorption net 172 put back can, above do the utility model discloses a whole theory of operation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a turbo charger waste gas bypass mechanism, includes exhaust connecting pipe (1), exhaust turbine (2), connecting axle (3), air turbine (4), air intake pipe (5), compressed air pipe (6), external bypass valve (8), reset spring (9), pull rod (10) and buffer spring (14), its characterized in that: the waste gas turbine (2) is installed at the top end inside the waste gas connecting pipe (1), a waste gas exhaust pipe (18) is arranged at the position on the left side of the waste gas turbine (2), an air turbine (4) is installed at the top end inside the compressed air pipe (6), an air inlet pipe (5) is arranged at the position on the right side of the air turbine (4), the waste gas turbine (2) and the air turbine (4) are fixedly connected through a connecting shaft (3), a bypass pipe (7) is arranged at the position on the left side of the waste gas connecting pipe (1), the waste gas connecting pipe (1) is communicated with the bypass pipe (7), an external bypass valve (8) is welded on one side wall of the bypass pipe (7), a pull rod (10) is welded inside the external bypass valve (8) through a reset spring (9), and one end, far away from the external bypass valve (8), of the pull rod (10) sequentially penetrates through the external, the inner wall of the bottom of the by-pass pipe (7) is hinged with the pull rod (10), the bottom of the by-pass pipe (7) close to one end of the waste gas connecting pipe (1) is provided with a slide rail (16), a slide block (15) is embedded in the slide rail (16), a built-in bypass valve (11) is welded at the top of the slide block (15), one side of the built-in bypass valve (11) is hinged with a pull rod (10), the other side of the built-in bypass valve (11) is welded with a connecting rod (12), and the top of the connecting rod (12) is hinged with a buffer plate (13), one side wall of the buffer plate (13) is welded and fixed with the top of the connecting rod (12) through a buffer spring (14), the top of the bypass pipe (7) is communicated with an exhaust gas exhaust pipe (18), a divergent pipe (19) is pressed inside the left side of the exhaust gas exhaust pipe (18), and one end of the divergent pipe (19) far away from the exhaust gas exhaust pipe (18) is provided with a filtering device (17).

2. The turbocharger waste gas bypass mechanism according to claim 1, characterized in that: filter equipment (17) include swivelling chute (171), active carbon adsorption net (172) and rotatory piece (173), swivelling chute (171) have been seted up to the inner wall of divergent pipe (19), the inside of swivelling chute (171) is embedded to have rotatory piece (173), one side welding that rotatory piece (171) were kept away from in rotatory piece (173) has active carbon adsorption net (172).

3. The turbocharger waste gas bypass mechanism according to claim 2, characterized in that: the front surface of the divergent pipe (19) is provided with a notch matched with the rotating block (173).

4. A turbocharger waste gas bypass mechanism according to claim 3, characterized in that: the rotary block (173) and the rotary groove (171) are provided with preformed holes which are matched with each other, and locking bolts are embedded in the preformed holes.

5. The turbocharger waste gas bypass mechanism according to claim 1, characterized in that: the length of the buffer plate (13) is larger than that of the built-in bypass valve (11), and the opening, close to the waste gas connecting pipe (1), of the top end of the buffer plate (13) is arc-shaped.

6. The turbocharger waste gas bypass mechanism according to claim 1, characterized in that: the diameters of two ends of the divergent pipe (19) are larger than the diameter of the middle of the divergent pipe, and the divergent pipe (19) is in a trapezoid shape.