CN214464429U

CN214464429U - Improved generation nozzle cascade blade

Info

Publication number: CN214464429U
Application number: CN202023169018.4U
Authority: CN
Inventors: 蒋华锋; 罗翔亮; 刘湘
Original assignee: NINGBO WEIFU TIANLI TURBOCHARGING TECHNOLOGY CO LTD
Current assignee: NINGBO WEIFU TIANLI TURBOCHARGING TECHNOLOGY CO LTD
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-22
Anticipated expiration: 2030-12-25

Abstract

An improved nozzle ring blade comprises a blade assembly, wherein the blade assembly comprises a rotating shaft, a stirring piece is fixed on the end part of one side of the rotating shaft, and the end part of the stirring piece is a stirring head; the end part of the other side of the rotating shaft is fixed with a blade, and the end surface of the outer side of the blade is provided with a plurality of protruding flow guide strips. The utility model provides an improved generation nozzle cascade structure and blade structure wherein for in the booster, through the improvement of structure, the frictional force of during operation has reduced greatly, has reduced driving resistance, has reduced wearing and tearing, makes the air current flow more stable simultaneously, has reduced the noise, has increased product life.

Description

Improved generation nozzle cascade blade

Technical Field

The utility model belongs to the turbo charger field, concretely relates to improved generation nozzle cascade blade for in booster.

Background

In the existing automobile technology, in order to reduce the oil consumption of an automobile and improve the dynamic property of the automobile, a turbocharger is generally adopted to improve the power of an engine. In the design process of the turbocharger for the vehicle, in order to fully exert the efficiency and safety principle of the engine, the designed maximum rotating speed of the turbocharger is necessarily set in the full-load state of the engine, so that in the low-speed working condition of the engine, the rotating speed of the turbocharger is directly caused by low-displacement exhaust gas and is also in the low-speed state, the normal work of the turbocharger is directly influenced, and the working efficiency of the turbocharger in the low-speed state of the engine is reduced.

In the prior art, a nozzle ring structure with a variable cross section is adopted, when an engine works in a low-speed state, the area of an air outlet of a nozzle ring of a supercharger is reduced, so that the area of the nozzle is reduced at a turbine end in a low-flow state to increase the air pressure, the working speed of a turbine rotor is improved, the air pressure of an air outlet at a gas compressor end is increased, and the working efficiency of the turbocharger in the low-speed state of the engine is improved.

The variable nozzle ring is used for being installed on the variable nozzle turbocharger, and the opening degree of nozzle blades of the variable nozzle ring is adjusted and controlled through an external control mechanism, so that the flow and the efficiency of the variable nozzle turbocharger are changed. In the conventional structure, one end of a blade shaft is provided with a blade, the other end of the blade shaft is provided with a stirring piece, the end part of the stirring piece is arranged in a stirring hole on a stirring disc, and the stirring disc rotates along with the rotation of the stirring disc, so that the rotation of the blade is realized.

Generally, the end part of the shifting piece is in surface contact with the shifting hole, and the friction force in the rotating process is large during working, so that the driving force of the driving blade needs to be large, and the controllability of the blade is poor. Moreover, when the nozzle ring blade of the turbocharger needs to reach the calibrated opening, the problem that the specified opening cannot be reached or the calibrated opening cannot be reached in time due to large friction force exists, and the working condition is affected. In the above configuration, if a gap is left between the end of the driver and the driver hole in order to reduce the friction force, the accuracy during the rotation is lowered, and the work efficiency is also lowered.

In addition, a gap is generally formed between the end surface of the blade and the surface of the cover plate, and the gap is narrow, so that a turbulent phenomenon is easily generated due to the lack of guidance when the gas passes through the gap, the resistance is increased, and noise is easily generated.

Accordingly, in response to the above problems, the present application provides further designs and improvements to nozzle ring structures, and in particular nozzle ring blade assemblies, in turbochargers.

SUMMERY OF THE UTILITY MODEL

To not enough among the above prior art, the utility model provides an improved generation nozzle cascade blade for in booster, through the improvement of structure, reduced the frictional force of during operation greatly, reduced driving resistance, reduced wearing and tearing, it is more stable to make the air current flow simultaneously, has reduced the noise, has increased product life.

In order to solve the above technical problem, the present invention solves the above technical problems.

An improved nozzle ring blade comprises a blade assembly, wherein the blade assembly comprises a rotating shaft, a stirring piece is fixed on the end part of one side of the rotating shaft, and the end part of the stirring piece is a stirring head; the end part of the other side of the rotating shaft is fixed with a blade, and the end surface of the outer side of the blade is provided with a plurality of protruding flow guide strips.

In this application, be equipped with a plurality of convex water conservancy diversion strips on the terminal surface of blade orientation apron, can carry out the refluence to the air current through in this space, reduce the resistance, avoid the air current disturbance, improve blade regulation precision.

In a preferred scheme, the number of the guide strips is two, and each guide strip has the same bending radian as the edge of the blade close to the guide strip. In this structure, the water conservancy diversion strip can match the air current route, and the water conservancy diversion is effectual, and the resistance is little, improves the regulation precision.

In a preferred scheme, a protruding part is arranged between the two diversion strips, and the position of the protruding part is aligned with the axis of the rotating shaft; the protruding distance of the protruding part is larger than the height of the flow guide strip. In this structure, the bulge offsets with the apron terminal surface, and area of contact is little, and the resistance is little during the rotation, also makes the water conservancy diversion strip not contact with the apron terminal surface simultaneously, and frictional resistance is little.

In a preferred embodiment, the ratio of the height of the protrusion to the height of the air guide strip is 1.1. In this structure, the bulge is a little higher than the water conservancy diversion strip, and is effectual to the water conservancy diversion of air current.

In a preferred scheme, at least three toggle head convex blocks are arranged on the outer wall of the toggle head, and the toggle head convex blocks are cambered surface protruding parts. In this structure, the stability of contact can be guaranteed to three first lug of stirring, and cambered surface bulge structure is the point contact, and frictional force is little.

In a preferred scheme, the toggle head protruding block is formed by outwards protruding a ball arranged in the toggle head, original sliding friction is changed into rolling friction, and friction force is smaller.

Compared with the prior art, the utility model discloses following beneficial effect has: the improved nozzle ring structure for the supercharger has the advantages that through the improvement of the structure, the friction force during working is greatly reduced, the driving resistance is reduced, the abrasion is reduced, meanwhile, the air flow is more stable, the noise is reduced, and the service life of a product is prolonged.

Drawings

Fig. 1 is a perspective view of a nozzle ring according to the present invention.

Fig. 2 is a second perspective view of the nozzle ring of the present invention.

Fig. 3 is a side view of the nozzle ring of the present invention.

Fig. 4 is a perspective view of the cover plate of the present invention.

Fig. 5 is a perspective view of the drive ring according to the present invention.

Fig. 6 is a perspective view of the driving ring and the blade assembly according to the present invention after assembly.

Fig. 7 is an enlarged view of the area a in fig. 6.

FIG. 8 is a perspective view of a blade assembly in one embodiment.

FIG. 9 is a partial schematic view of one embodiment of a toggle member disposed in a drive notch.

FIG. 10 is a perspective view of a blade assembly in another embodiment.

Detailed Description

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

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it is to be understood that the term: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the drawing shows, just for the convenience of description the utility model discloses and simplified description, consequently can not be understood as the restriction of the utility model. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 1 to 10, the present invention relates to an improved nozzle ring structure and vane structure thereof for use in a supercharger, comprising: the driving ring 13 is of a circular ring structure, and a plurality of driving notches 131 are uniformly distributed on the inner side wall of the driving ring 13; the mounting plate 12 is arranged on one side of the driving ring 13, a plurality of rotating shaft holes are uniformly distributed on the mounting plate 12, a plurality of guide pieces 121 are further arranged on the mounting plate 12, and the guide pieces 121 are abutted to the inner side wall of the driving ring 13 for positioning; the cover plate 13 is arranged on one side of the mounting disc 12, a positioning pin 23 is arranged between the cover plate 13 and the mounting disc 12, and a positioning sleeve 23 for positioning the spacing is arranged on the positioning pin 23;

the blade assembly comprises a rotating shaft 24, the rotating shaft 24 is rotatably arranged in the rotating shaft hole, and the rotating shaft 24 extends out of two ends of the rotating shaft hole; a toggle piece 21 is fixed on the end of the rotating shaft 24 facing the driving ring 13, the end of the toggle piece 21 is a toggle head 211, and the toggle head 211 is arranged in the driving notch 131; the end of the rotating shaft 24 facing the cover plate 13 is fixed with a blade 22, and the blade 22 is arranged in a gap between the cover plate 13 and the mounting disc 12; the end surface of the blade 22 facing the cover plate 13 is provided with a plurality of protruding guide strips 221.

In the improved generation nozzle ring structure in this application, can drive through rotating drive ring 13 and dial piece 21 and carry out the beat, realize that pivot 24 rotates, drive blade 22 and rotate, realize the aperture and adjust. In addition, in this application, be equipped with a plurality of convex water conservancy diversion strips 221 on the terminal surface of blade 22 towards apron 13, can carry out the refluence to the air current through in this space, reduce the resistance, avoid the air current disturbance, improve blade and adjust the precision.

Specifically, in the present application, the number of the flow guide strips 221 is two, and each flow guide strip 221 has the same curvature as the edge of the blade close to the flow guide strip. In the structure, the flow guide strips 221 can be matched with an air flow path, the flow guide effect is good, the resistance is small, and the adjustment precision is improved. Further, in the present application, a protruding portion 222 is disposed between the two flow guide strips 221, and the position of the protruding portion 222 is aligned with the axis of the rotating shaft 24; the protrusion 222 protrudes a distance greater than the height of the air guide strip 221. In this structure, the protrusion 222 abuts against the end surface of the cover plate 13, so that the contact area is small, the resistance is small during rotation, and the guide strip 221 is not in contact with the end surface of the cover plate 13, so that the friction resistance is small. The ratio of the height of the protrusion 222 to the height of the guide strip 221 is 1.1. In this structure, the protruding portion 222 is slightly higher than the flow guiding strip 221, so as to achieve a good flow guiding effect for the air flow.

In this application, point contact is realized through a plurality of protruding structure between the outer wall of toggle head 211 and the inner wall of drive breach 131. In this structure, the stability of contact can be guaranteed to a plurality of protrusion structure, and cambered surface protrusion structure is the point contact, and frictional force is little.

In one embodiment, at least three toggle head protrusions 212 are disposed on the outer wall of the toggle head 211, the toggle head protrusions 212 are cambered protrusions, and the toggle head protrusions 212 are in point contact with the inner wall of the driving notch 131. In this configuration, three toggle bumps 212 may ensure contact stability. The toggle head protrusion 212 is formed by outward protrusion of a ball arranged in the toggle head 211, original sliding friction is changed into rolling friction, and friction force is smaller.

In another embodiment, at least three driving notch protrusions 137 are disposed on the inner wall of the driving notch 131, the driving notch protrusions 137 are cambered protrusions, and the driving notch protrusions 137 are in point contact with the outer wall of the toggle head 211. In this structure, the three driving notch projections 137 can secure the stability of the contact. The driving notch protrusion 137 is formed by a ball disposed on the inner wall of the driving notch 131 protruding outward, and changes the original sliding friction into rolling friction, so that the friction force is smaller.

In the prior art, the toggle head 211 and the driving notch 131 are in surface contact, the indirect area between the toggle head and the driving notch is large, and the friction force in the rotating process of the blade is large, so that the required driving force is large, the responsiveness is poor, and the phenomenon of blocking or incomplete rotation of the blade is easy to occur. In this application, change the face contact originally into the point contact, consequently at blade removal, rotation in-process, frictional force reduces greatly, has reduced drive power and responsiveness and is showing and improves.

In this application, the driving ring 13 is provided with a pulling opening 132 for cooperating with an external power structure to pull the driving ring 13 to rotate.

It is above, the utility model provides an improved generation nozzle cascade structure and blade structure wherein for in the booster, through the improvement of structure, reduced the frictional force of during operation greatly, reduced driving resistance, reduced wearing and tearing, it is more stable to make the air current flow simultaneously, has reduced the noise, has increased product life.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims

1. An improved nozzle ring blade is characterized by comprising a blade assembly, wherein the blade assembly comprises a rotating shaft (24), a stirring piece (21) is fixed on the end part of one side of the rotating shaft (24), and the end part of the stirring piece (21) is a stirring head (211); the end part of the other side of the rotating shaft (24) is fixed with a blade (22), and the end surface of the outer side of the blade (22) is provided with a plurality of convex flow guide strips (221).

2. An improved nozzle ring vane as claimed in claim 1, wherein the number of guide strips (221) is two, each guide strip (221) having the same curvature as the vane edge adjacent thereto.

3. An improved nozzle ring vane according to claim 2, wherein a projection (222) is provided at a position between the two guide strips (221), the projection (222) being positioned in alignment with the axis of the rotary shaft (24); the protruding distance of the protruding part (222) is larger than the height of the flow guide strip (221).

4. An improved nozzle ring vane according to claim 3, wherein the ratio of the height of the projection (222) to the height of the guide strip (221) is 1.1.

5. The improved nozzle ring vane as claimed in claim 1, wherein the outer wall of said toggle head (211) is provided with at least three toggle head protrusions (212), said toggle head protrusions (212) being cambered protrusions.

6. An improved nozzle ring vane according to claim 5, wherein said toggle knob (212) is formed by balls disposed in a toggle knob (211) that project outwardly.