CN208486918U - A kind of nozzle assembly aperture ring driving structure - Google Patents
A kind of nozzle assembly aperture ring driving structure Download PDFInfo
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- CN208486918U CN208486918U CN201821094914.9U CN201821094914U CN208486918U CN 208486918 U CN208486918 U CN 208486918U CN 201821094914 U CN201821094914 U CN 201821094914U CN 208486918 U CN208486918 U CN 208486918U
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- shift fork
- aperture ring
- nozzle assembly
- aperture
- driving structure
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Abstract
The utility model discloses a kind of nozzle assembly aperture ring driving structures, are related to mixed-flow turbocharger field, including aperture ring, shift fork, rotation axis and actuator；The aperture ring is ring structure, including aperture slot, is blocked and allocating slot；The shift fork includes shift fork head, shift fork arm and shift fork hole；The shift fork head is mounted in the allocating slot；The shift fork hole is connect with described rotation axis one end；The rotation axis other end is connect with the actuator；The actuator drives the shift fork to rotate by the rotation axis, and the shift fork is stirred the aperture ring by the allocating slot and rotated, to change the nozzle assembly aperture.Nozzle assembly aperture ring driving structure provided by the utility model has the characteristics that simple structure, high reliablity, is easy to arrange, is at low cost.
Description
Technical field
The utility model relates to mixed-flow turbocharger field more particularly to a kind of nozzle assembly aperture ring driving structures.
Background technique
Turbocharger is the device being used in combination with internal combustion engine, is transported to engine intake for compressing
Air increases air inflow, to increase the power output of engine.Turbocharger includes the pressure being mounted in compressor housing
Contracting machine impeller and the turbine being mounted in turbine cylinder.Wherein, turbine cylinder and compressor housing are by a middle casing
Connection, installation and cooling and lubricating of the middle casing for bearing.Turbine cylinder limits the general toroidal runner for surrounding turbine,
Exhaust enters runner from engine and blows to turbine, and drives turbine rotation, and turbine drives coaxially connected compressor to rotate.
Air is compressed by compressor impeller, is then transported to engine intake through housing outlets.
It come one of booster aspect of performance challenge is being entire work model in engine using turbocharger
Enclose the interior engine power output for realizing desired size.It has been found that utilizing the turbocharger of fixed nozzle size usually not
It is easy to reach the purpose；By adjusting the inlet air flow of the turbine of turbocharger, improving control from turbocharger to internal combustion
Well known operational advantages are provided in terms of the ability of the amount of charge air of engine conveying.By in the spray led in turbine wheel
Variable geometry is combined in mouth, realizes the adjusting to backblast turbine.By changing the size in Flow in Nozzle region,
The adjustable exhaust gas flow into turbine wheel, to adjust the amount of charge air as provided by the compressor of turbocharger.
The nozzle of geometry-variable for turbocharger is generally divided into two main Types: variable-vane spray at present
Mouth and sliding plunger nozzle.Blade is typically included in turbine nozzle, for guiding exhaust into turbine along advantageous direction.
For variable-vane nozzle, row's circumferentially spaced bucket extends axially through nozzle, and can be driven with driven device
It rotates synchronously.Exhaust from volute flow passage flows through the access between blade radially inward, and blade can change
The direction of air-flow flowing, to be flowed into turbine wheel along desired direction guidance exhaust gas.In most of variable-vane nozzles,
Blade, which can enclose, to be rotated about the axis thereof, to change angle set by blade, to change the flow region of access between blade.It is variable
Blade cut-out governing is more flexible, but complicated structure limits the use scope of variable-vane nozzle, due to movement zero
Part is more, easily occurs the risk of clamping stagnation failure at high temperature, so the use temperature range of variable-vane nozzle is restricted；
Simultaneously as structure is complicated for variable-vane nozzle, cost is relatively high, equally also limits its application range.
In the nozzle of sliding-piston type, nozzle also may include blade, but blade is fixed on suitable position.It is logical
The piston that slides axially slided in the intracorporal hole of turbine case is crossed, the change in Flow in Nozzle region is realized.Piston is tubulose
, and it is located just at the inner radial of nozzle.The axial movement of piston effectively changes the axis of the introducing turbine wheel of nozzle
To degree, to change " throat region " in turbine wheel inlet.When blade includes in nozzle, piston can be neighbouring
The inner radial boundary slip of blade；Alternately, piston and blade can be radially overlapped, and piston may include notch,
For accommodating at least part of blade when piston slides axially to adjust nozzle.For this sliding-piston type of nozzle,
It is not widely used, mainly since its control structure is difficult to be arranged, since its piston needs slide axially, so
Control mechanism is also required to be axial control, and since volute side is connected with middle case, side is connected with gas exhaust treatment pipeline,
So control mechanism is difficult to be disposed in axial direction.
The variable-nozzle of variable-vane type and sliding-piston type, the two all have merits and demerits.For example, having rotatable
The variable-vane nozzle of blade usually has good aerodynamic quality, but since there are many quantity of movable members, so
It is mechanically very complicated.Sliding-piston type variable nozzle is mechanically much simpler, has seldom movable members, but usually in sky
It is good not as good as variable-vane nozzle on aerodynamic force.
And the advantages of rotation nozzle set blade type nozzle and sliding-piston type of nozzle, by nozzle ring and aperture ring group
At.Nozzle ring is at cirque structure, and circumferentially array is located on the one side of nozzle ring several nozzle vanes, and nozzle leaf
Piece is a part of nozzle ring, and the two is an entirety, i.e. the angle of blade is fixed nonadjustable, and blade angle quilt
It is designed as the incident angle of efficiency optimization, the opening portion between adjacent blades is air inlet duct, for guiding exhaust gas to blow to turbine.
Aperture ring is also ring structure, and diameter dimension is slightly larger than nozzle ring.Nozzle ring has several open slots, quantity and leaf in circumferentially design
Piece quantity is consistent, and the air inlet duct between the circumferential width and nozzle vane of open slot is suitable, the height and nozzle vane of open slot
Height it is suitable.When the aperture slot on aperture ring and the open slot overlapping area maximum between nozzle vane, nozzle assembly is opened
Degree is maximum, and when aperture slot and open slot overlapping area minimum, nozzle assembly aperture is minimum, the aperture slot and nozzle on aperture ring
The area that open slot between blade is overlapped is the opening size for determining nozzle assembly, namely is determined into exhaust gas turbine
Exhausted air quantity size.
Therefore, those skilled in the art is dedicated to developing a kind of nozzle assembly aperture ring driving structure, turns for driving
Aperture ring in ejector half nozzle assembly makes it control nozzle assembly opening size according to engine power demand, to accurately control
Exhaust gas turbine air inflow processed.
Utility model content
In view of the above drawbacks of the prior art, the technical problem to be solved by the utility model is to provide one kind to be suitable for
The driving structure of rotation nozzle assembly aperture ring, the structure need to have simple structure, high reliablity, be easy to arrange, is at low cost
The characteristics of.
To achieve the above object, the utility model provides a kind of nozzle assembly aperture ring driving structure, including aperture ring,
Shift fork, rotation axis and actuator；The aperture ring is ring structure, including the aperture slot, described is blocked and the allocating slot；Institute
Stating shift fork includes the shift fork head, the shift fork arm and the shift fork hole；The shift fork head is mounted in the allocating slot；Described group
Entry is connect with described rotation axis one end；The rotation axis other end is connect with the actuator；The actuator passes through described
Rotation axis drives the shift fork rotation, and the shift fork is stirred the aperture ring by the allocating slot and rotated, to change the spray
Nozzle assembly aperture.
Further, the circumferentially uniformly distributed aperture slot of the aperture ring, quantity are consistent with nozzle vane quantity；It is two neighboring
It is described block between the aperture slot；The allocating slot and the aperture ring unitary design, and integral production forms, and is located at institute
Aperture annulate shaft is stated to side.
Further, the shift fork is driving link, and the allocating slot is driven member.
Further, the shift fork head is circle, and the aperture ring is driven by the inner wall face contact with the allocating slot
Rotation.
Further, the allocating slot and the shift fork head are clearance fit, and preferred gap range is 0.05~1mm.
Further, the shift fork hole and the rotation axis are interference fit.
Further, the actuator and the rotation axis are interference fit.
Further, the actuator is electric and pneumatic pattern.
Further, the actuator can positive and negative rotation operation, the aperture ring both forward and reverse directions can be made to rotate.
Further, the actuator can the opening size according to needed for the nozzle assembly stablize the aperture ring to keep
In required position.
In the better embodiment of the utility model, the actuator can be passed through by motor or compressed air-driven
The rotation axis drives the shift fork rotation.The shift fork stirs the allocating slot in rotary manner, and the aperture ring is driven to turn
It is dynamic, so that the overlapping area of the aperture slot and nozzle air inlet duct on the aperture ring is changed, to control exhaust gas turbine
Air inflow.
Nozzle assembly aperture ring driving structure provided by the utility model have structure simple, high reliablity, be easy to arrange,
Feature at low cost.
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Detailed description of the invention
Fig. 1 is the nozzle assembly fit structure schematic diagram of a preferred embodiment of the utility model；
Fig. 2 is the aperture ring schematic diagram one of a preferred embodiment of the utility model；
Fig. 3 is the aperture ring schematic diagram two of a preferred embodiment of the utility model；
Fig. 4 is the shift fork schematic diagram of a preferred embodiment of the utility model；
Fig. 5 is that the shift fork of a preferred embodiment of the utility model and rotation axis cooperate schematic diagram；
Fig. 6 is that the shift fork of a preferred embodiment of the utility model and aperture ring cooperate schematic diagram one；
Fig. 7 is that the shift fork of a preferred embodiment of the utility model and aperture ring cooperate schematic diagram two.
Specific embodiment
Multiple preferred embodiments that the utility model is introduced below with reference to Figure of description, keep its technology contents clearer
Be easy to understand.The utility model can be emerged from by many various forms of embodiments, the protection of the utility model
Range is not limited only to the embodiment mentioned in text.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and the utility model is not
Limit the size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
As shown in Figure 1, the utility model relates to a kind of nozzle assembly aperture ring driving structure include the aperture ring 1,
The shift fork 2, the rotation axis 3 and the actuator.
As shown in Fig. 2, the aperture ring 1 is ring structure, including the aperture slot 11, described block 12 and the allocating slot
13.The aperture slot 11 is circumferential to be evenly arranged on the aperture ring 1, and quantity is consistent with nozzle vane quantity；It is opened described in two neighboring
12 are blocked described in being between degree slot 11；The allocating slot 13 and 1 unitary design of aperture ring, and integral production forms, and is located at
The axial side (as shown in Figure 3) of the aperture ring 1.
As shown in figure 4, the shift fork 2 includes the shift fork head 21, the shift fork arm 22 and the shift fork hole 23, a system
It forms.
Integral production can guarantee the aperture ring 1 and the shift fork 2 under high temperature, hyperbaric environment, when high-frequency acts
Intensity.
As shown in figure 5, the shift fork hole 23 is connect with described 3 one end of rotation axis, 3 other end of rotation axis is held with described
The connection of row device.It is interference fit between the shift fork hole 23 and the rotation axis 3, the actuator and the rotation axis 3, it can
Effectively to transmit the rotating torque of the actuator.
As shown in Figure 6 and Figure 7, the shift fork head 21 is circle, is mounted in the allocating slot 13.21 outer wall of shift fork head
It is clearance fit between 13 inner wall of allocating slot, the opening width of the allocating slot 13 is slightly larger than the diameter size of shift fork head 21,
Preferred gap range is 0.05~1mm.The fit clearance can enable the shift fork head 21 under any operating condition in the allocating slot
Normal rotation in 13, without clamping stagnation occurs or taps phenomenon.
The actuator drives the shift fork 2 to rotate by the rotation axis 3, and the shift fork 2 is dialled by the allocating slot 13
It moves the aperture ring 1 to rotate, to change the nozzle assembly aperture.
The actuator can select electric and pneumatic pattern as needed, can positive and negative rotation operation, can also be according to the nozzle
Opening size needed for component makes the aperture ring 1 be stably held in required position.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that this field ordinary skill without
It needs creative work according to the present utility model can conceive and makes many modifications and variations.Therefore, it is all in the art
Technical staff passes through logical analysis, reasoning, or a limited experiment according to the design of the utility model on the basis of existing technology can
It, all should be within the scope of protection determined by the claims with obtained technical solution.
Claims (10)
1. a kind of nozzle assembly aperture ring driving structure, which is characterized in that including aperture ring, shift fork, rotation axis and actuator；Institute
Stating aperture ring is ring structure, including aperture slot, is blocked and allocating slot；The shift fork includes shift fork head, shift fork arm and shift fork hole；Institute
Shift fork head is stated to be mounted in the allocating slot；The shift fork hole is connect with described rotation axis one end；The rotation axis other end and institute
State actuator connection；The actuator drives the shift fork to rotate by the rotation axis, and the shift fork is dialled by the allocating slot
The aperture ring rotation is moved, to change the nozzle assembly aperture.
2. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the aperture ring is circumferentially evenly distributed with institute
Aperture slot is stated, quantity is consistent with nozzle vane quantity；It is described block between the two neighboring aperture slot；The allocating slot and institute
Aperture ring unitary design is stated, and integral production forms, is located at the aperture annulate shaft to side.
3. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the shift fork is driving link, institute
Stating allocating slot is driven member.
4. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the shift fork head is circle, is led to
The inner wall face contact with the allocating slot is crossed to drive the aperture ring to rotate.
5. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the allocating slot and the shift fork head
For clearance fit, preferred gap range is 0.05~1mm.
6. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the shift fork hole and the rotation
Axis is interference fit.
7. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the actuator and the rotation
Axis is interference fit.
8. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the actuator is electronic or gas
Ejector half formula.
9. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the actuator positive and negative can be transported
Row can be such that the aperture ring both forward and reverse directions rotate.
10. nozzle assembly aperture ring driving structure as described in claim 1, which is characterized in that the actuator can be according to institute
Stating opening size needed for nozzle assembly makes the aperture ring be stably held in required position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821094914.9U CN208486918U (en) | 2018-07-11 | 2018-07-11 | A kind of nozzle assembly aperture ring driving structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821094914.9U CN208486918U (en) | 2018-07-11 | 2018-07-11 | A kind of nozzle assembly aperture ring driving structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208486918U true CN208486918U (en) | 2019-02-12 |
Family
ID=65246383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821094914.9U Active CN208486918U (en) | 2018-07-11 | 2018-07-11 | A kind of nozzle assembly aperture ring driving structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208486918U (en) |
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2018
- 2018-07-11 CN CN201821094914.9U patent/CN208486918U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210406 Address after: 215506 no.1150, Southeast Avenue, Southeast street, Changshu City, Suzhou City, Jiangsu Province Patentee after: Eason Technology (Jiangsu) Co., Ltd Address before: 201703 1st floor, building 1, 518 Songhui Road, Qingpu District, Shanghai Patentee before: ISEM TECHNOLOGIES (SHANGHAI) Co. |
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| TR01 | Transfer of patent right |