CN106286406A - Rotating machinery structure and vane diffuser thereof - Google Patents
Rotating machinery structure and vane diffuser thereof Download PDFInfo
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- CN106286406A CN106286406A CN201610933680.1A CN201610933680A CN106286406A CN 106286406 A CN106286406 A CN 106286406A CN 201610933680 A CN201610933680 A CN 201610933680A CN 106286406 A CN106286406 A CN 106286406A
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- Prior art keywords
- blade
- guide rod
- vane
- bar
- driving ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of rotating machinery structure and vane diffuser thereof, vane diffuser includes driving ring, driving means and multiple blade assembly.Driving means can drive the driving forward and reverse rotation of ring, and multiple blade assemblies are along driving the circumferentially disposed of ring.Blade assembly includes connecting rod, controls bar, guide rod, circumference locating part and blade.One end of connecting rod is rotationally connected with the outside driving ring, the other end and the one end controlling bar are rotationally connected, one end of the other end and the guide rod that control bar is fixing to be connected, and guide rod is mutually perpendicular to control bar, and it is circumferentially fixed and can be around own axis that circumferential locating part can control guide rod.The problem that the vane diffuser that the present invention provides can efficiently solve vane diffuser variable working condition bad adaptability.
Description
Technical field
The present invention relates to rotating machine art field, more particularly, it relates to a kind of rotating machinery structure and blade thereof expand
Depressor.
Background technology
In the rotating machineries such as centrifugal compressor, aerator, air compressor machine, the most all can be at impeller outlet Position Design diffusion
Device structure, this diffuser mainly makes from impeller the flow slowing down with high flow rate out, makes kinetic energy effectively be converted into pressure
Power energy.
Diffuser includes vaneless diffuser and vane diffuser, and wherein vaneless diffuser includes the ring being made up of two walls
Shape passage, its simple in construction, cost is low, and performance curve is smooth, steady working condition wider range, and when Mach number Ma is higher,
Efficiency reduces inconspicuous, therefore vaneless diffuser is used widely.But its shortcoming is because airflow direction angle is basically unchanged, road of flowing
Journey is longer, and friction loss is big.And under design conditions, its efficiency is less than vane diffuser, the least at airflow direction angle especially
Time seem and become apparent from.
Vane diffuser is to load onto a series of blade in the circular passage of above-mentioned vaneless diffuser, has diffusion ability
By force, the advantages such as size is little, its runner is short, and flow losses are little, thus efficiency is higher.Under design conditions, its efficiency expands than without leaf
Depressor high 3～5%.But owing to the position of blade immobilizes, during variable working condition, air-flow impact loss is relatively big, and efficiency declines bright
Aobvious, particularly when the angle of attack is excessive, runner is easily generated serious separation, the generation of surge can be caused.When compressor flowrate subtracts
Hour, first flowing severe exacerbation often occurs in vane diffuser, and causes the surge of whole compressor.
In sum, the problem how efficiently solving vane diffuser variable working condition bad adaptability, is current this area skill
Art personnel's urgent problem.
Summary of the invention
In view of this, first purpose of the present invention is to provide a kind of vane diffuser, to efficiently solve blade expansion
The problem of depressor variable working condition bad adaptability, second object of the present invention is to provide a kind of rotation including above-mentioned vane diffuser
Frame for movement.
In order to reach above-mentioned first purpose, the present invention provides following technical scheme:
A kind of vane diffuser, including drive ring, can drive the described forward and reverse rotation of driving ring driving means and
Along multiple blade assemblies that described driving ring is circumferentially disposed, described blade assembly includes:
Connecting rod, one end of described connecting rod is rotationally connected with the outside of described driving ring, and both relatively rotate axis with
The axis of described driving ring is parallel；
The control bar that the other end of one end and described connecting rod is rotationally connected, and both relatively rotate axis and described driving
The axis of ring is parallel；
The guide rod being connected is fixed in one end with the other end of described control bar, and described guide rod is mutually perpendicular to controlling bar；
Circumference locating part, it is circumferentially fixed and can turn around own axes that described circumference locating part can control described guide rod
Dynamic；
It is fixed on the blade of the other end of described guide rod.
Preferably, in above-mentioned vane diffuser, described driving means includes the defeated of actuator and one end and described actuator
Going out the pitman shaft that end is rotationally connected, the other end of described pitman shaft is rotationally connected with described driving ring, the output of described actuator
End is along linear telescopic, and it is driven by described pitman shaft and drives ring to rotate.
Preferably, in above-mentioned vane diffuser, the two ends of described pitman shaft by spherical shaft coupling respectively with described driving
The outfan of ring and described actuator connects.
Preferably, in above-mentioned vane diffuser, it is additionally provided with between the outfan of described pitman shaft and described actuator and drives
Moving axis, and one end of described drive shaft is rotationally connected with pitman shaft, and the other end is fixing with the outfan of described actuator to be connected.
Preferably, in above-mentioned vane diffuser, described actuator is linear stepping motor.
Preferably, in above-mentioned vane diffuser, the outside of described driving ring is fixed with multiple straight-bar, multiple described vane group
Part is connected on multiple described straight-bar.
Preferably, in above-mentioned vane diffuser, the two ends of described connecting rod by mounting pin respectively with described straight-bar and control
Bar connects.
Preferably, in above-mentioned vane diffuser, described connecting rod is flat rod, and the end of the end of straight-bar and control bar is equal
Having perforate, described connecting rod two ends are inserted in the perforate of described straight-bar and control bar respectively, and the two ends of described flat rod are arc
Shape.
Preferably, in above-mentioned vane diffuser, the end that described guide rod is connected with described control bar offers installing hole, institute
State control bar through described installing hole.
Preferably, in above-mentioned vane diffuser, described control bar is fixed with nut through the end of described installing hole, described
Controlling to be additionally provided with, on bar, the positionable wall offseted with described guide rod, described guide rod is fastened by described positionable wall and nut clip.
Preferably, in above-mentioned vane diffuser, the angle that described blade rotates is 0-20 °.
Preferably, in above-mentioned vane diffuser, the angle that described blade rotates is 15 °.
Preferably, in above-mentioned vane diffuser, also include the angle limit part limiting the anglec of rotation of described driving ring.
Preferably, in above-mentioned vane diffuser, described circumference locating part is specially bearing, and described guide rod is through described
Seat.
Preferably, in above-mentioned vane diffuser, described bearing is provided be provided with on block, and described driving ring spacing
Block, when described driving ring rotates, described limited block can offset to carry out spacing to described limited block with described block.
Preferably, in above-mentioned vane diffuser, described connecting rod and the angle controlled between bar are not more than 160 °.
Preferably, in above-mentioned vane diffuser, described blade offers and is provided with and institute on mounting hole and described guide rod
State the kidney-shaped axle that mounting hole coordinates.
Preferably, in above-mentioned vane diffuser, described guide rod is fixed with nut through the end of described mounting hole, described in lead
Bar and blade pass through nut check.
Preferably, in above-mentioned vane diffuser, the mounting hole of described blade is opened in the position that its thickness is maximum, described leaf
The chord length of sheet is L, and maximum gauge is positioned at the Inlet Position 0.3L-0.5L of described blade.
Preferably, in above-mentioned vane diffuser, at the maximum gauge of described blade, it is provided with counterbore, locks the spiral shell of described blade
Mother sinks in described counterbore, and described counterbore and described mounting hole are collectively forming shoulder hole.
Preferably, in above-mentioned vane diffuser, at the maximum gauge of described blade, it is provided with projection, and described shoulder hole
The hole wall minimum range away from described convex outer surface is 1.5-3mm.
A kind of rotating machinery structure, including the vane diffuser as according to any one of above-mentioned.
Preferably, in above-mentioned rotating machinery structure, described rotating machinery structure is centrifugal compressor, aerator, centrifugal water
Pump or air compressor machine.
Preferably, in above-mentioned rotating machinery structure, described rotating machinery structure is centrifugal compressor, and described driving annulus moves
The direction of rotation of blade is consistent with the impeller direction of rotation of described centrifugal compressor.
The vane diffuser that the present invention provides includes driving ring, driving means and multiple blade assembly.Wherein, driving means
Can drive the driving forward and reverse rotation of ring, multiple blade assemblies are along driving the circumferentially disposed of ring.Blade assembly includes connecting rod, control
Bar processed, guide rod, circumference locating part and blade.Wherein, one end of connecting rod is rotationally connected with the outside driving ring, the other end and control
One end of bar processed is rotationally connected, and the pivot center between connecting rod and driving ring is parallel with the axis driving ring, connecting rod and control
Pivot center between bar processed is also parallel with the axis driving ring, i.e. pivot center, connecting rod and control between connecting rod and driving ring
Pivot center between bar processed and axis when driving ring to rotate are the most parallel.Control the other end of bar and one end of guide rod
Fixing connect, and guide rod is mutually perpendicular to controlling bar, i.e. guide rod and control bar, connecting rod is the most vertical.Circumference locating part energy
Enough control guide rod circumferentially fixed and can be around own axis, i.e. guide rod can not occur circumferentially displaced, is only capable of around self axle
Line rotates.Blade is fixed on the other end of guide rod, can rotate by band moving vane, and blade and guide rod coaxially turn when guide rod rotates
Dynamic.
During the vane diffuser that the application present invention provides, when variable working condition, can be driven by driving means and drive ring to turn
Dynamic, owing to the two ends of connecting rod are rotationally connected with driving ring and control bar respectively, therefore drive ring drivening rod to turn together with controlling bar
Dynamic, guide rod is fixing with control bar to be connected, and therefore guide rod model-following control bar rotates, and then blade is followed guide rod and rotated, it is achieved that leaf
The rotation of sheet, to be met compressor under different load be in Effec-tive Function all the time, after rotation by the regulation blade anglec of rotation
The angle of blade adapts to the air-flow angle of attack after variable working condition, it is to avoid breathing heavily of surge phenomenon and whole compressor occurs when the angle of attack is excessive
Shake.
In order to reach above-mentioned second purpose, present invention also offers a kind of rotating machinery structure, this rotating machinery structure
Including any of the above-described kind of vane diffuser.Owing to above-mentioned vane diffuser has above-mentioned technique effect, there is this blade diffusion
The rotating machinery structure of device also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The left view of the vane diffuser that Fig. 1 provides for the embodiment of the present invention；
The right view of the vane diffuser that Fig. 2 provides for the embodiment of the present invention；
The assembling schematic diagram driving ring and driving means that Fig. 3 provides for the embodiment of the present invention；
The structural representation of the blade assembly that Fig. 4 provides for the embodiment of the present invention；
The assembling schematic diagram driving ring and blade assembly that Fig. 5 provides for the embodiment of the present invention；
The guide rod that Fig. 6 provides for the embodiment of the present invention and the assembling schematic diagram of blade；
The rotation schematic diagram of the blade that Fig. 7 provides for the embodiment of the present invention；
The structural representation of the blade that Fig. 8 provides for the embodiment of the present invention；
The structural representation of the centrifugal compressor that Fig. 9 provides for the embodiment of the present invention.
In Fig. 1-9:
1-drives ring, 11-limited block, 12-boss；
The spherical shaft coupling of 2-driving means, 21-, 22-drive shaft, 23-pitman shaft；
3-blade assembly, 31-straight-bar, 32-connecting rod, 33-control bar, 34-guide rod, 34a-kidney-shaped axle, 35-blade；
4-bearing, 41-block；
A-compressor box, B-vane diffuser, C-impeller, D-main shaft, E-air-out passage.
Detailed description of the invention
First purpose of the present invention is to provide a kind of vane diffuser, to efficiently solve vane diffuser variable working condition
The problem of bad adaptability, second object of the present invention is to provide a kind of rotating machinery structure including above-mentioned vane diffuser.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Referring to Fig. 1-Fig. 8, the vane diffuser that the embodiment of the present invention provides includes driving ring 1, driving means 2 and multiple
Blade assembly 3.Wherein, driving means 2 can drive the driving forward and reverse rotation of ring 1, and multiple blade assemblies 3 are along driving ring 1
Circumferentially disposed.Blade assembly 3 includes connecting rod 32, controls bar 33, guide rod 34, circumference locating part and blade 35.Wherein, connecting rod 32
One end with drive ring 1 outside be rotationally connected, the other end with control bar 33 one end be rotationally connected, and connecting rod 32 and driving
Pivot center between ring 1 is parallel with the axis driving ring 1, connecting rod 32 and the pivot center that controls between bar 33 also with drive ring
The axis of 1 is parallel, i.e. connecting rod 32 and drive the pivot center between ring 1, connecting rod 32 and the pivot center that controls between bar 33 with
And drive the ring 1 axis when rotating the most parallel.One end of the other end and guide rod 34 that control bar 33 is fixed and is connected, and leads
Bar 34 is mutually perpendicular to controlling bar 33, i.e. guide rod 34 is the most vertical with control bar 33, connecting rod 32.Circumference locating part can control
Guide rod 34 is circumferentially fixed and can be around own axis, i.e. guide rod 34 can not occur circumferentially displaced, is only capable of around own axes
Rotate.Blade 35 is fixed on the other end of guide rod 34, can rotate by band moving vane 35 when guide rod 34 rotates, and blade 35 and guide rod
34 rotate coaxially.
Wherein, drive ring 1, connecting rod 32 to be collectively forming similar multi-connecting-rod mechanism with controlling bar 33, turn clockwise when driving ring 1
Time dynamic, connecting rod 32 drives control bar 33 to rotate clockwise, and controls bar 33 simultaneously and drives guide rod 34 and blade 35 to rotate clockwise.
When drive ring 1 rotate counterclockwise time, connecting rod 32 drive control bar 33 rotate counterclockwise, simultaneously control bar 33 drive guide rod 34 and
Blade 35 rotates counterclockwise.
During the vane diffuser that the application present invention provides, when variable working condition, can be driven by driving means 2 and drive ring 1
Rotate, owing to the two ends of connecting rod 32 are rotationally connected with driving ring 1 and control bar 33 respectively, therefore drive ring 1 drivening rod 32 and control
Bar 33 processed rotates together, and guide rod 34 is fixing with control bar 33 to be connected, and therefore guide rod 34 model-following control bar 33 rotates, and then blade 35
Follow guide rod 34 to rotate, it is achieved that the rotation of blade 35, press under different load to be met by regulation blade 35 anglec of rotation
Contracting machine is in Effec-tive Function all the time, rotate the air-flow angle of attack after the angle of rear blade 35 adapts to variable working condition, it is to avoid the angle of attack is excessive
Shi Fasheng surge phenomenon and the surge of whole compressor.
Specifically, driving means 2 includes actuator and pitman shaft 23, wherein one end of pitman shaft 23 and the output of actuator
End is rotationally connected, and the other end of pitman shaft 23 is rotationally connected with driving ring 1, and the outfan of actuator, along linear telescopic, drives
Being driven by pitman shaft 23 when the outfan of part stretches drives ring 1 to rotate.When adjusting blade 35 angle, the outfan of actuator is stretched
Go out or shrink, and then drivening rod axle 23 moves, in the outfan telescopic process of actuator between pitman shaft 23 and outfan
Angle change, i.e. angle between pitman shaft 23 and the flexible straight line at outfan place changes, due to pitman shaft
23 two ends are and are rotationally connected, and therefore pitman shaft 23 can drive driving ring 1 to rotate.Outfan can be stretched in order to avoid blocking
During contracting along straight line be staggered setting with the center of circle driving ring 1, when i.e. outfan stretches along straight line do not overdrive the circle of ring 1
The heart.Being arranged such, rectilinear movement is converted to rotate by driving means 2, is easier to the rotation realizing driving ring 1, and simple in construction is just
In operation.
Wherein, the two ends of pitman shaft 23 can by spherical shaft coupling 21 respectively with drive ring 1 and the outfan of actuator
Connecting, the two ends of such pitman shaft 23 can occur 360 ° of rotations relative to the outfan driving ring 1 and actuator so that connecting rod
One end of axle 23 is with the flexible translation of outfan of actuator, and the other end is along with driving ring 1 to rotate in a circumferential direction, so that pitman shaft
The movement at 23 two ends is more flexible.Certainly, the two ends of pitman shaft 23 can also by rotary shaft respectively with drive ring 1 and actuator
Outfan connect, in this no limit.
In order to ensure that pitman shaft 23 does not relatively rotates with spherical shaft coupling 21, can be at pitman shaft 23 two ends with spherical
A locking nut is installed in the position that shaft coupling 21 connects, this locking nut can limiting rod axle 23 with spherical shaft coupling 21 not
Relatively rotate.
For the ease of connecting, it is also provided with drive shaft 22 between pitman shaft 23 and the outfan of actuator, and drives
One end of moving axis 22 is rotationally connected with pitman shaft 23 that the outfan of the other end and actuator is fixing to be connected.Such then pitman shaft 23
One end is connected with drive shaft 22 by spherical shaft coupling 21, and the other end is connected with driving ring 1 by spherical shaft coupling 21.
Preferably, actuator can be linear stepping motor, and the precision of linear stepping motor is higher and low cost.Certainly,
Actuator can also be cylinder or telescopic oil cylinder, in this no limit.
For the ease of the connection of blade assembly 3, multiple straight-bar 31, multiple blades can be fixed with in the outside driving ring 1
Assembly 3 is connected on multiple straight-bar 31.Multiple straight-bars 31 are along driving the circumferentially disposed of ring 1, and the length of straight-bar 31 is permissible
Along driving being radially arranged of ring 1, one end of such straight-bar 31 is fixing with driving ring 1 to be connected, and the other end is with blade assembly 3 even
Connect.Straight-bar 31 can be threaded connection with driving ring 1, specifically drives and can offer screwed hole, the end of straight-bar 31 on ring 1
Portion arranges external thread section, for the ease of both connections, it is also possible to arranges a die nut screens on straight-bar 31, so may be used
To rotate straight-bar 31 after blocking die nut screens by spanner.Certainly, can also interference join between straight-bar 31 and driving ring 1
Close, in this no limit.
It addition, the outside of driving ring 1 can be circumferentially arranged with multiple boss 12, one end of straight-bar 31 is directly and boss 12 is solid
Fixed connection.So easily facilitating the location of straight-bar 31, multiple straight-bars 31 should be uniformly distributed along the circumference driving ring 1.
In order to simplify structure, wherein the two ends of connecting rod 32 can be connected with straight-bar 31 and control bar 33 respectively by mounting pin
Connect.I.e. one end of connecting rod 32 is rotationally connected with straight-bar 31 by mounting pin, and the other end of connecting rod 32 is by mounting pin and control bar
33 are rotationally connected.
Specifically, connecting rod 32 can be flat rod, and the end of the end of straight-bar 31 and control bar 33 is respectively provided with perforate, connecting rod
The two ends of 32 are inserted inside the perforate of straight-bar 31 and control bar 33, then by connecting rod 32 and straight-bar 31 and control bar by mounting pin
33 are rotationally connected.In order to avoid interfering the rotational angle of connecting rod 32, the two ends of connecting rod 32 can be disposed as arc, connecting rod 32
Two ends can the most outwardly, when such connecting rod 32 rotates its end will not offset with the inwall of perforate and limiting rod 32 turn
Dynamic angle.
Certainly, connecting rod 32 can also be round bar, and connecting rod 32 is connected by rotary shaft with straight-bar 31 and control bar 33.
For the ease of guide rod 34 and the connection controlling bar 33, can offer in the end that guide rod 34 is connected with control bar 33
Installing hole, controls bar 33 through installing hole.Further, control bar 33 is fixed with nut through the end of installing hole, controls bar
Being additionally provided with the positionable wall offseted with guide rod 34 on 33, guide rod 34 is fastened by positionable wall and nut clip.The i.e. side of guide rod 34
Offseting with positionable wall, opposite side offsets with nut, and positionable wall and nut clamping guide rod 34 are to realize guide rod 34 and to control bar 33
It is relatively fixed.
Specifically can be provided with prominent locating piece on control bar 33, the side of the close guide rod 34 of locating piece is location
Wall.Control to arrange a die nut screens on bar 33, be easy to during such fastening nut with spanner card column die nut
Screens is to fix control bar 33.Die nut screens can offset with guide rod 34 as prominent locating piece.
As shown in Figure 6, blade 35 positional representation shown in solid blade 35 location when flow minimum, dotted line institute
Blade 35 location when the leaf position shown represents maximum flow, b represents blade 35 anglec of rotation, and blade 35 rotates
Angle b is 0-20 °.Preferably, angle b that blade 35 rotates is 15 °.Certainly, anglec of rotation b of blade 35 can also be more than
20 °, in this no limit.When installing, the direction of rotation of blade 35 need to be impeller along impeller direction of rotation in Fig. 6
When turning clockwise, the rotation schematic diagram of blade 35.
In order to avoid the anglec of rotation of blade 35 is excessive, this vane diffuser B can also include limiting the rotation driving ring 1
The angle limit part of angle.I.e. when driving ring 1 to turn to set angle, due to the effect of angle limit part, driving ring 1 can not
It is further continued for rotating.
Circumference locating part can be specially bearing 4, and guide rod 34 is through bearing 4.I.e. offering through hole on bearing 4, guide rod 34 is worn
Cross through hole.Being arranged such, bearing 4 position is fixed, and it is circumferentially displaced that the hole wall of through hole carries out its generation of spacing prevention to guide rod 34, and
Guide rod 34 can be around own axis in through hole.
Further, bearing 4 is provided with block 41, drives and on ring 1, be provided with limited block 11, drive ring 1 to rotate the time limit
Position block 11 can offset to carry out spacing to limited block 11 with block 41.So block 41 and limited block 11 collectively forms angle limit
Part, when i.e. driving ring 1 to turn to set angle, drives the limited block 11 on ring 1 to offset with the block 41 on bearing 4 and drives to stop
Rotating ring 1 is rotated further.Wherein the quantity of block 41 can be two, and when driving ring 1 to rotate, limited block 11 is only capable of at two blocks
Rotating between 41, the positive gyration and reverse angle driving ring 1 can be limited by two blocks 41 respectively.If limited block 11
With two blocks 41 coordinated with it are referred to as an angle limit part, then this vane diffuser B can arrange multiple angle limit
Part, is preferably set up three angle limit parts, and three angle limit parts is along driving ring 1 circumference uniform.
Certainly, angle limit part can also be for limiting the fastener of the outfan collapsing length of actuator, and concrete fastener limits
The collapsing length of actuator outfan, and then limit the rotational angle driving ring 1.
As shown in Figure 4, in order to prevent from driving connecting rod 32 in ring 1 rotation process to overturn, between connecting rod 32 and control bar 33
Angle a should be not more than 160 °, otherwise is easy to cause due to rigging error connecting rod 32 to be overturned during assembling, finally leads
Cause total lost efficacy.
In the vane diffuser B improved in the present embodiment, blade 35 can offer on mounting hole, and guide rod 34
It is provided with the kidney-shaped axle 34a coordinated with mounting hole.So ensure that when guide rod 34 rotates, band moving vane 35 rotates, and both are coaxial
Rotate.Further, guide rod 34 is fixed with nut, guide rod 34 and blade 35 by nut check through the end of mounting hole, i.e.
Nut check is so that guide rod 34 and blade 35 are relatively fixed.Can be with 2-6 breach outside nut, preferential selection 2 or 4
Individual, breach blocks rear rotating nut with the blade 35 that is locked for frock.
Certainly, blade 35 can also be in this no limit with guide rod 34 interference fit.
In order to ensure the intensity of blade 35, the mounting hole of blade 35 is preferably opened in the position that its thickness is maximum.Blade 35
Inlet Position be referred to as leading edge, position of giving vent to anger is referred to as trailing edge, and the distance between leading edge trailing edge is referred to as chord length L, from leading edge start meter
Calculating, blade 35 thickness maximum position is normally at 0.3L-0.5L, i.e. maximum gauge is positioned at the Inlet Position away from blade 35
At 0.3L-0.5L.
Pass through to not produce bigger drag effects air-flow, at the maximum gauge of blade 35, be provided with counterbore, locking-blade 35
Nut sink in counterbore.Further, counterbore and mounting hole are collectively forming shoulder hole.
When being not enough to processing shoulder hole at the maximum gauge of blade 35, can arrange convex at the maximum gauge of blade 35
Rising, the hole wall of the shoulder hole minimum range away from convex outer surface is 1.5-3mm.Protruding outer surface is preferably cambered surface.Preferably,
The hole wall of the shoulder hole minimum range away from convex outer surface is 2mm, if the minimum range that the hole wall of shoulder hole is away from convex outer surface
The least, add easy edge damage in man-hour, fluid then can be caused at the resistance bigger through out-of-date generation too greatly.
Blade 35 can be airfoil fan.And blade 35 can process shape by the way of cutting, milling or casting
Become, preferentially select the mode of cutting, milling, so can ensure blade 35 surface smoothness, reduce friction loss.Work as fluid flow
Time less, blade 35 size shape is less, the method that should not use casting, cast blade 35 be only applicable to fluid flow bigger time
Blade 35.
This vane diffuser B can be low denseness vane diffuser, i.e. blade 35 quantity is unsuitable too much, and otherwise structure is difficult to
Arranging, in general blade 35 quantity can be 5～15, and optimum chooses 9～11.
Based on the vane diffuser provided in above-described embodiment, present invention also offers a kind of rotating machinery structure, this rotation
Turn frame for movement and include any one vane diffuser in above-described embodiment.Owing to this rotating machinery structure have employed above-mentioned enforcement
Vane diffuser in example, so the beneficial effect of this rotating machinery structure refer to above-described embodiment.
Specifically, this rotating machinery structure can be centrifugal compressor, aerator, centrifugal water pump or air compressor machine.When this rotation
Turning frame for movement when can be centrifugal compressor, it can be specially compound compressor or single-stage compressor.
When rotating machinery structure is centrifugal compressor, the direction of rotation driving ring 1 band moving vane 35 should be with centrifugal pressure
The impeller direction of rotation of contracting machine is consistent.As shown in Figure 8, this vane diffuser B is positioned at inside compressor box A, the master of compressor
Axle D impeller rotates together, and impeller C is the acting element of whole compressor, and vane diffuser B blade is positioned at the air-out of impeller
In passage E.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (24)
1. a vane diffuser, it is characterised in that include driving ring (1), the forward and reverse rotation of described driving ring (1) can being driven
Driving means (2) and along the circumferentially disposed multiple blade assemblies (3) of described driving ring (1), described blade assembly (3) wraps
Include:
Connecting rod (32), one end of described connecting rod (32) is rotationally connected with the outside of described driving ring (1), and both relatively rotate
Axis is parallel with the axis of described driving ring (1)；
The control bar (33) that the other end of one end and described connecting rod (32) is rotationally connected, and both relatively rotate axis with described
The axis driving ring (1) is parallel；
The guide rod (34) being connected is fixed in one end with the other end of described control bar (33), and described guide rod (34) with control bar (33)
It is mutually perpendicular to；
Circumference locating part, it is circumferentially fixed and can turn around own axes that described circumference locating part can control described guide rod (34)
Dynamic；
It is fixed on the blade (35) of the other end of described guide rod (34).
Vane diffuser the most according to claim 1, it is characterised in that described driving means (2) includes actuator and
The pitman shaft (23) that the outfan of end and described actuator is rotationally connected, the other end of described pitman shaft (23) and described driving ring
(1) being rotationally connected, the outfan of described actuator is along linear telescopic, and it is driven by described pitman shaft (23) and drives ring (1)
Rotate.
Vane diffuser the most according to claim 2, it is characterised in that spherical company is passed through at the two ends of described pitman shaft (23)
Joint (21) outfan with described driving ring (1) and described actuator respectively is connected.
4. according to the vane diffuser described in Claims 2 or 3, it is characterised in that described pitman shaft (23) and described actuator
Outfan between be additionally provided with drive shaft (22), and one end of described drive shaft (22) is rotationally connected another with pitman shaft (23)
Hold the outfan with described actuator to fix to be connected.
5. according to the vane diffuser described in Claims 2 or 3, it is characterised in that described actuator is linear stepping motor.
Vane diffuser the most according to claim 1, it is characterised in that the outside of described driving ring (1) is fixed with multiple
Straight-bar (31), multiple described blade assemblies (3) are connected on multiple described straight-bar (31).
Vane diffuser the most according to claim 6, it is characterised in that the two ends of described connecting rod (32) are divided by mounting pin
It is not connected with described straight-bar (31) and control bar (33).
Vane diffuser the most according to claim 7, it is characterised in that described connecting rod (32) is flat rod, and straight-bar
(31) end and control bar (33) end be respectively provided with perforate, described connecting rod (32) two ends insert respectively described straight-bar (31) and
Controlling in the perforate of bar (33), the two ends of described flat rod are arc.
Vane diffuser the most according to claim 1, it is characterised in that described guide rod (34) is with described control bar (33) even
The end connect offers installing hole, and described control bar (33) passes described installing hole.
Vane diffuser the most according to claim 9, it is characterised in that described control bar (33) passes described installing hole
End be fixed with nut, described control bar (33) is additionally provided with the positionable wall offseted with described guide rod (34), described guide rod
(34) fastened by described positionable wall and nut clip.
11. vane diffusers according to claim 1, it is characterised in that the angle that described blade (35) rotates is 0-
20°。
12. vane diffusers according to claim 11, it is characterised in that the angle that described blade (35) rotates is 15 °.
13. vane diffusers according to claim 1, it is characterised in that also include the rotation limiting described driving ring (1)
The angle limit part of angle.
14. vane diffusers according to claim 1, it is characterised in that described circumference locating part is specially bearing (4),
And described guide rod (34) is through described bearing (4).
15. vane diffusers according to claim 14, it is characterised in that be provided with block (41) on described bearing (4),
And on described driving ring (1), it being provided with limited block (11), when described driving ring (1) rotates, described limited block (11) can be with described gear
Block (41) offsets to carry out spacing to described limited block (11).
16. vane diffusers according to claim 1, it is characterised in that between described connecting rod (32) and control bar (33)
Angle be not more than 160 °.
17. vane diffusers according to claim 1, it is characterised in that offer mounting hole and described on described blade
The kidney-shaped axle (34a) coordinated with described mounting hole it is provided with on guide rod (34).
18. vane diffusers according to claim 17, it is characterised in that described guide rod (34) is through described mounting hole
End is fixed with nut, described guide rod (34) and blade (35) and passes through nut check.
19. vane diffusers according to claim 17, it is characterised in that the mounting hole of described blade (35) is opened in it
The position that thickness is maximum, the chord length of described blade (35) is L, and maximum gauge is positioned at the Inlet Position away from described blade (35)
At 0.3L-0.5L.
20. vane diffusers according to claim 19, it is characterised in that be provided with at the maximum gauge of described blade (35)
Counterbore, the nut locking described blade (35) sinks in described counterbore, and described counterbore and described mounting hole are collectively forming shoulder hole.
21. vane diffusers according to claim 20, it is characterised in that arrange at the maximum gauge of described blade (35)
There is projection, and the minimum range that the hole wall of described shoulder hole is away from described convex outer surface is 1.5-3mm.
22. 1 kinds of rotating machinery structures, it is characterised in that include the blade diffusion as according to any one of claim 1-20
Device.
23. rotating machinery structures according to claim 22, it is characterised in that described rotating machinery structure is centrifugal compressed
Machine, aerator, centrifugal water pump or air compressor machine.
24. rotating machinery structures according to claim 22, it is characterised in that described rotating machinery structure is centrifugal compressed
Machine, the direction of rotation of described driving ring (1) band moving vane (35) is consistent with the impeller direction of rotation of described centrifugal compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933680.1A CN106286406B (en) | 2016-10-25 | 2016-10-25 | Rotating machinery structure and its vane diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933680.1A CN106286406B (en) | 2016-10-25 | 2016-10-25 | Rotating machinery structure and its vane diffuser |
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| CN106286406A true CN106286406A (en) | 2017-01-04 |
| CN106286406B CN106286406B (en) | 2018-04-20 |
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| CN201610933680.1A Active CN106286406B (en) | 2016-10-25 | 2016-10-25 | Rotating machinery structure and its vane diffuser |
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| CN (1) | CN106286406B (en) |
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| CN106704265A (en) * | 2016-11-11 | 2017-05-24 | 珠海格力电器股份有限公司 | Diffusing device, diffuser mounting structure, mechanical device and refrigerating equipment |
| CN107143350A (en) * | 2017-06-16 | 2017-09-08 | 天津大学 | Shield tunnel straightway liner structure rigidity gear driven type stiffening device |
| CN107165654A (en) * | 2017-06-16 | 2017-09-15 | 天津大学 | Shield tunnel straightway liner structure rigidity gear driven type strengthens method |
| CN107201907A (en) * | 2017-06-16 | 2017-09-26 | 天津大学 | Shield tunnel straightway pipe ring rigidity of structure Worm-gear type strengthens method |
| CN107227963A (en) * | 2017-06-16 | 2017-10-03 | 天津大学 | Shield tunnel straightway pipe ring rigidity of structure Worm-gear type stiffening device |
| CN110566514A (en) * | 2019-10-25 | 2019-12-13 | 重庆通用工业(集团)有限责任公司 | Noise reduction blade structure of centrifugal compressor |
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| CN107143350A (en) * | 2017-06-16 | 2017-09-08 | 天津大学 | Shield tunnel straightway liner structure rigidity gear driven type stiffening device |
| CN107165654A (en) * | 2017-06-16 | 2017-09-15 | 天津大学 | Shield tunnel straightway liner structure rigidity gear driven type strengthens method |
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| CN110566514A (en) * | 2019-10-25 | 2019-12-13 | 重庆通用工业(集团)有限责任公司 | Noise reduction blade structure of centrifugal compressor |
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|---|---|
| CN106286406B (en) | 2018-04-20 |
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