CN206144857U - Rotary mechanical structure and vane diffuser thereof - Google Patents
Rotary mechanical structure and vane diffuser thereof Download PDFInfo
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- CN206144857U CN206144857U CN201621158083.8U CN201621158083U CN206144857U CN 206144857 U CN206144857 U CN 206144857U CN 201621158083 U CN201621158083 U CN 201621158083U CN 206144857 U CN206144857 U CN 206144857U
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Abstract
The utility model discloses a rotating machinery structure and blade diffuser thereof, blade diffuser include drive ring, drive arrangement and a plurality of blade subassembly. The driving device can drive the driving ring to rotate in the forward and reverse directions, and the blade assemblies are arranged along the circumferential direction of the driving ring. The blade subassembly includes connecting rod, control lever, guide arm, circumference locating part and blade. One end of the connecting rod is rotatably connected with the outer side of the driving ring, the other end of the connecting rod is rotatably connected with one end of the control rod, the other end of the control rod is fixedly connected with one end of the guide rod, the guide rod is perpendicular to the control rod, and the circumferential limiting part can control the guide rod to be circumferentially fixed and can rotate around the axis of the guide rod. The utility model provides a vane diffuser can solve the poor problem of vane diffuser variable operating mode adaptability effectively.
Description
Technical field
This utility model is related to rotating machine art field, more particularly, it relates to a kind of rotating machinery structure and its leaf
Piece diffuser.
Background technology
In the rotating machineries such as centrifugal compressor, aerator, air compressor machine, typically all can be in impeller outlet Position Design diffusion
Device structure, the diffuser mainly make the flow slowing down with high flow rate from impeller out, make 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 structure, low cost, performance curve are flat, steady working condition wider range, and when Mach number Ma is higher,
Efficiency is reduced not substantially, therefore vaneless diffuser is used widely.But which has the disadvantage to be basically unchanged because of airflow direction angle, road of flowing
Journey is longer, and friction loss is big.And under design conditions, its efficiency is less than vane diffuser, especially in airflow direction angle very little
When seem and become apparent from.
Vane diffuser is that a series of blades are loaded onto in the circular passage of above-mentioned vaneless diffuser, with diffusion ability
By force, the advantages of size is little, its runner are short, and flow losses are little, thus efficiency is higher.Under design conditions, its efficiency ratio expands without leaf
Depressor is high by 3～5%.But as the position of blade immobilizes, during variable working condition, air-flow impact loss is larger, efficiency declines bright
It is aobvious, particularly when the angle of attack is excessive, serious separation in runner, is also easy to produce, the generation of surge can be caused.When compressor flowrate subtracts
Hour, often occur flowing severe exacerbation first in vane diffuser, and cause the surge of whole compressor.
In sum, the problem of vane diffuser variable working condition bad adaptability how is efficiently solved, is current this area skill
Art personnel's urgent problem.
Utility model content
In view of this, first purpose of the present utility model is to provide a kind of vane diffuser, to efficiently solve leaf
The problem of piece diffuser variable working condition bad adaptability, second purpose of the present utility model are to provide a kind of including above-mentioned blade diffusion
The rotating machinery structure of device.
In order to reach above-mentioned first purpose, this utility model provides following technical scheme：
A kind of vane diffuser, including driving ring, can drive the forward and reverse rotation of the driving ring driving means and
Along the circumferentially disposed multiple blade assemblies of the driving ring, the blade assembly includes：
Connecting rod, the outside of one end of the connecting rod and the driving ring are rotated and be connecteds, and both relative rotation axis and
The diameter parallel of the driving ring；
One end rotates the control-rod being connected, and both relative rotation axis and drivings with the other end of the connecting rod
The diameter parallel of ring；
The guide rod that one end is fixedly connected with the other end of the control-rod, and the guide rod is mutually perpendicular to control-rod；
Circumferential locating part, the circumferential locating part can control the guide rod it is circumferentially fixed and can around own axes turn
It is dynamic；
It is fixed on the blade of the other end of the guide rod.
Preferably, in above-mentioned vane diffuser, the driving means include that actuator and one end are defeated with the actuator
Go out the pitman shaft that end rotates connection, the other end of the pitman shaft is rotated with the driving ring and is connected, the output of the actuator
Along linear telescopic, which drives driving ring to rotate by the pitman shaft at end.
Preferably, in above-mentioned vane diffuser, the two ends of the pitman shaft by spherical shaft coupling respectively with the driving
The outfan connection of ring and the actuator.
Preferably, in above-mentioned vane diffuser, between the outfan of the pitman shaft and the actuator, it is additionally provided with drive
Moving axis, and one end of the drive shaft and pitman shaft rotated and be connected the other end and be fixedly connected with the outfan of the actuator.
Preferably, in above-mentioned vane diffuser, the actuator is linear stepping motor.
Preferably, in above-mentioned vane diffuser, multiple straight-bars, multiple blade groups on the outside of the driving ring, are fixed with
Part is connected on multiple straight-bars.
Preferably, in above-mentioned vane diffuser, the two ends of the connecting rod by mounting pin respectively with the straight-bar and control
Bar connects.
Preferably, in above-mentioned vane diffuser, the connecting rod is flat rod, and the end of straight-bar and the end of control-rod are equal
With perforate, the connecting rod two ends are inserted in the perforate of the straight-bar and control-rod respectively, and the two ends of the flat rod are arc
Shape.
Preferably, in above-mentioned vane diffuser, the end that the guide rod is connected with the control-rod offers installing hole, institute
Control-rod is stated through the installing hole.
Preferably, in above-mentioned vane diffuser, the control-rod is fixed with nut through the end of the installing hole, described
The positionable wall offseted with the guide rod is additionally provided with control-rod, the guide rod is fixedly clamped by the positionable wall and nut.
Preferably, in above-mentioned vane diffuser, the angle of the blade rotation is 0-20 °.
Preferably, in above-mentioned vane diffuser, the angle of the blade rotation is 15 °.
Preferably, in above-mentioned vane diffuser, also including the angle limit part of the anglec of rotation for limiting the driving ring.
Preferably, in above-mentioned vane diffuser, the circumferential locating part is specially bearing, and the guide rod passes through described
Seat.
Preferably, in above-mentioned vane diffuser, it is provided with the bearing on block, and the driving ring and limited location is set
Block, when the driving ring is rotated, the limited block can offset spacing to carry out to the limited block with the block.
Preferably, in above-mentioned vane diffuser, the angle between the connecting rod and control-rod is not more than 160 °.
Preferably, in above-mentioned vane diffuser, offer on the blade and be provided with mounting hole and the guide rod and institute
State the kidney-shaped axle of mounting hole cooperation.
Preferably, in above-mentioned vane diffuser, the guide rod is fixed with nut through the end of the mounting hole, described to lead
Bar and blade pass through nut check.
Preferably, in above-mentioned vane diffuser, the mounting hole of the blade is opened in the maximum position of its thickness, the leaf
The chord length of piece is L, and maximum gauge is positioned at the Inlet Position 0.3L-0.5L of the blade.
Preferably, in above-mentioned vane diffuser, counterbore at the maximum gauge of the blade, is provided with, locks the spiral shell of the blade
Mother is sunk in the counterbore, and the counterbore and the mounting hole are collectively forming shoulder hole.
Preferably, in above-mentioned vane diffuser, at the maximum gauge of the blade, it is provided with projection, and the shoulder hole
Minimum range of the hole wall away from the convex outer surface is 1.5-3mm.
A kind of rotating machinery structure, including the vane diffuser any one of as described above.
Preferably, in above-mentioned rotating machinery structure, the rotating machinery structure is centrifugal compressor, aerator, centrifugal water
Pump or air compressor machine.
Preferably, in above-mentioned rotating machinery structure, the rotating machinery structure is centrifugal compressor, the driving ring drive
The direction of rotation of blade is consistent with the impeller direction of rotation of the centrifugal compressor.
The vane diffuser that this utility model is provided includes driving ring, driving means and multiple blade assemblies.Wherein, drive
Device can drive the forward and reverse rotation of driving ring, and multiple blade assemblies are along the circumferentially disposed of driving ring.Blade assembly includes connecting
Bar, control-rod, guide rod, circumferential locating part and blade.Wherein, one end of connecting rod is rotated with the outside of driving ring and is connected, another
Hold to rotate with one end of control-rod and be connected, and the pivot center between connecting rod and driving ring and the diameter parallel of driving ring, connect
Pivot center between bar and control-rod diameter parallel also with driving ring, i.e., the pivot center, company between connecting rod and driving ring
Axis when pivot center and driving ring between bar and control-rod is rotated is mutually parallel.The other end and guide rod of control-rod
One end be fixedly connected, and guide rod is mutually perpendicular to control-rod, i.e. guide rod is mutually vertical with control-rod, connecting rod.It is circumferential to limit
It is circumferentially fixed and be able to can not occur circumferentially displaced around own axis, i.e. guide rod that position part can control guide rod, is only capable of surrounding
Own axis.Blade is fixed on the other end of guide rod, and guide rod can drive blade to rotate when rotating, and blade and guide rod are same
Axle is rotated.
Using this utility model provide vane diffuser when, when variable working condition, can by driving means drive driving
Ring is rotated, and is connected as the two ends of connecting rod are rotated with driving ring and control-rod respectively, therefore driving ring drivening rod and control-rod one
Rise and rotate, guide rod is fixedly connected with control-rod, therefore guide rod model- following control bar is rotated, and then blade follows guide rod to rotate, and realizes
The rotation of blade, meets compressor under different load and, all the time in Effec-tive Function, turns with by adjusting the blade anglec of rotation
The angle of dynamic rear blade adapts to the air-flow angle of attack after variable working condition, it is to avoid the angle of attack occurs surge phenomenon and whole compressor when excessive
Surge.
In order to reach above-mentioned second purpose, this utility model additionally provides a kind of rotating machinery structure, the rotating machinery
Structure includes any of the above-described kind of vane diffuser.As above-mentioned vane diffuser has above-mentioned technique effect, with the blade
The rotating machinery structure of diffuser should also have corresponding technique effect.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
The left view of the vane diffuser that Fig. 1 is provided for this utility model embodiment；
The right view of the vane diffuser that Fig. 2 is provided for this utility model embodiment；
Driving ring and the assembling schematic diagram of driving means that Fig. 3 is provided for this utility model embodiment；
The structural representation of the blade assembly that Fig. 4 is provided for this utility model embodiment；
Driving ring and the assembling schematic diagram of blade assembly that Fig. 5 is provided for this utility model embodiment；
Guide rod and the assembling schematic diagram of blade that Fig. 6 is provided for this utility model embodiment；
The rotation schematic diagram of the blade that Fig. 7 is provided for this utility model embodiment；
The structural representation of the blade that Fig. 8 is provided for this utility model embodiment；
The structural representation of the centrifugal compressor that Fig. 9 is provided for this utility model embodiment.
In Fig. 1-9：
1- driving rings, 11- limited blocks, 12- boss；
The spherical shaft coupling of 2- driving means, 21-, 22- drive shafts, 23- pitman shafts；
3- blade assemblies, 31- straight-bars, 32- connecting rods, 33- control-rods, 34- guide rods, 34a- kidney-shaped axles, 35- blades；
4- bearings, 41- blocks；
A- compressor box, B- vane diffusers, C- impellers, D- main shafts, E- air-out passages.
Specific embodiment
First purpose of the present utility model is to provide a kind of vane diffuser, to efficiently solve vane diffuser change
The problem of adaptability for working condition difference, second purpose of the present utility model are to provide a kind of whirler including above-mentioned vane diffuser
Tool structure.
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Fig. 1-Fig. 8 is referred to, the vane diffuser that this utility model embodiment is provided includes driving ring 1,2 and of driving means
Multiple blade assemblies 3.Wherein, driving means 2 can drive 1 forward and reverse rotation of driving ring, and multiple blade assemblies 3 are along driving ring
1 it is circumferentially disposed.Blade assembly 3 includes connecting rod 32, control-rod 33, guide rod 34, circumferential locating part and blade 35.Wherein, even
One end of bar 32 is rotated with the outside of driving ring 1 and is connected, and the other end is rotated with one end of control-rod 33 and is connected, and 32 He of connecting rod
The diameter parallel of pivot center between driving ring 1 and driving ring 1, the pivot center between connecting rod 32 and control-rod 33 also with drive
Pivot center, the rotary shaft between connecting rod 32 and control-rod 33 between the diameter parallel of rotating ring 1, i.e. connecting rod 32 and driving ring 1
Axis when line and driving ring 1 are rotated is mutually parallel.The other end of control-rod 33 is fixedly connected with one end of guide rod 34, and
And guide rod 34 is mutually perpendicular to control-rod 33, i.e. guide rod 34 is mutually vertical with control-rod 33, connecting rod 32.Circumferential locating part can
Control guide rod 34 is circumferentially fixed and be able to can not occur circumferentially displaced around own axis, i.e. guide rod 34, is only capable of around itself
Axis is rotated.Blade 35 is fixed on the other end of guide rod 34, and guide rod 34 can drive blade 35 to rotate when rotating, and 35 He of blade
Guide rod 34 is rotated coaxially.
Wherein, driving ring 1, connecting rod 32 are collectively forming similar multi-connecting-rod mechanism with control-rod 33, when driving ring 1 turns clockwise
When dynamic, connecting rod 32 drives control-rod 33 to rotate clockwise, while control-rod 33 drives guide rod 34 and blade 35 to rotate clockwise.
When driving ring 1 is rotated counterclockwise, connecting rod 32 drive control-rod 33 rotate counterclockwise, while control-rod 33 drive guide rod 34 and
Blade 35 is rotated counterclockwise.
Using this utility model provide vane diffuser when, when variable working condition, can by driving means 2 drive drive
Ring 1 is rotated, and is connected as the two ends of connecting rod 32 are rotated with driving ring 1 and control-rod 33 respectively, therefore 1 drivening rod of driving ring, 32 He
Control-rod 33 is rotated together, and guide rod 34 is fixedly connected with control-rod 33, therefore 34 model- following control bar 33 of guide rod is rotated, and then blade
35 follow guide rod 34 to rotate, and realize the rotation of blade 35, meet under different load with by adjusting 35 anglec of rotation of blade
Compressor is in Effec-tive Function all the time, and the angle for rotating rear blade 35 adapts to the air-flow angle of attack after variable working condition, it is to avoid angle of attack mistake
There is the surge of surge phenomenon and whole compressor when big.
Specifically, driving means 2 include actuator and pitman shaft 23, the wherein output of one end of pitman shaft 23 and actuator
End rotates connection, and the other end of pitman shaft 23 is rotated with driving ring 1 and is connected, and the outfan of actuator is driven along linear telescopic
Driving ring 1 is driven to rotate by pitman shaft 23 when the outfan of part is flexible.During adjustment 35 angle of blade, the outfan of actuator is stretched
Go out or shrink, and then drivening rod axle 23 is moved, in the outfan telescopic process of actuator between pitman shaft 23 and outfan
Angle change, i.e., the angle between the flexible straight line that pitman shaft 23 and outfan are located changes, due to pitman shaft
23 two ends are rotation connection, 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 and driving ring 1 the center of circle be staggered settings, i.e. outfan stretch when along straight line only driving ring 1 circle
The heart.It is arranged such, rectilinear movement is converted to rotation by driving means 2, is easier to realize the rotation of driving ring 1, simple structure is just
In operation.
Wherein, the two ends of pitman shaft 23 can by spherical shaft coupling 21 respectively with driving ring 1 and the outfan of actuator
Connection, the two ends of such pitman shaft 23 can occur 360 ° of rotations relative to the outfan of driving ring 1 and actuator so that connecting rod
One end of axle 23 is stretched with the outfan of actuator and is translated, and the other end rotates in a circumferential direction with driving ring 1, 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 driving ring 1 and actuator
Outfan connection, be not limited thereto.
In order to ensure that pitman shaft 23 is not relatively rotated with spherical shaft coupling 21, can 23 two ends of pitman shaft with it is spherical
Shaft coupling 21 connection position install a locking nut, this locking nut can limiting rod axle 23 with spherical shaft coupling 21 not
Relatively rotate.
For the ease of connection, drive shaft 22 is also provided between pitman shaft 23 and the outfan of actuator, and is driven
One end of moving axis 22 is connected the other end with the rotation of pitman shaft 23 and is fixedly connected with the outfan of actuator.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, be not limited thereto.
For the ease of the connection of blade assembly 3, multiple straight-bars 31, multiple blades can be fixed with the outside of driving ring 1
Component 3 is connected on multiple straight-bars 31.Multiple straight-bars 31 are circumferentially disposed along driving ring 1, and the length of straight-bar 31 can be with
Along being radially arranged for driving ring 1, one end of such straight-bar 31 is fixedly connected with driving ring 1, and the other end is connected with blade assembly 3
Connect.Straight-bar 31 can be threaded connection with driving ring 1, and screwed hole, the end of straight-bar 31 specifically can be offered in driving ring 1
Portion arranges external thread section, for the ease of both connections, can so may be used so that a die nut screens is arranged on straight-bar 31
To block rotation straight-bar 31 after die nut screens by spanner.Certainly, between straight-bar 31 and driving ring 1 can also interference match somebody with somebody
Close, be not limited thereto.
In addition, the outside of driving ring 1 can be directly solid with boss 12 circumferentially arranged with multiple boss 12, one end of straight-bar 31
It is fixed to connect.The positioning of straight-bar 31 is easily facilitated so, multiple straight-bars 31 should be uniformly distributed along the circumference of driving ring 1.
In order to simplify structure, the wherein two ends of connecting rod 32 can be connected with straight-bar 31 and control-rod 33 respectively by mounting pin
Connect.I.e. one end of connecting rod 32 is rotated with straight-bar 31 by mounting pin and is connected, and the other end of connecting rod 32 passes through mounting pin and control-rod
33 rotate connection.
Specifically, connecting rod 32 can be flat rod, and the end of straight-bar 31 and the end of control-rod 33 are respectively provided with perforate, connecting rod
Inside 32 two ends insertion straight-bar 31 and the perforate of control-rod 33, then by mounting pin by connecting rod 32 and straight-bar 31 and control-rod
33 rotate connection.In order to avoid interfering the rotational angle of connecting rod 32, the two ends of connecting rod 32 be disposed as arc, connecting rod 32
Two ends can outwardly, such connecting rod 32 rotate when 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-rod 33.
For the ease of the connection of guide rod 34 and control-rod 33, the end that can be connected with control-rod 33 in guide rod 34 is offered
Installing hole, control-rod 33 pass through installing hole.Further, control-rod 33 is fixed with nut, control-rod through the end of installing hole
The positionable wall offseted with guide rod 34 is additionally provided with 33, guide rod 34 is fixedly clamped by positionable wall and nut.That is the side of guide rod 34
Offset with positionable wall, opposite side is offseted with nut, positionable wall and nut clamp guide rod 34 to realize guide rod 34 and control-rod 33
It is relatively fixed.
Prominent locating piece can be provided with control-rod 33 specifically, the side of the close guide rod 34 of locating piece is positioning
Wall.One die nut screens can also be set on control-rod 33, be easy to when so tightening nut with spanner card column die nut
Screens is fixing control-rod 33.Die nut screens can be offseted with guide rod 34 as prominent locating piece.
As shown in fig. 6,35 positional representation of blade shown in solid 35 location of blade, dotted line institute when flow is minimum
35 location of blade when the leaf position for showing represents maximum flow, b represent 35 anglec of rotation of blade, and the rotation of blade 35
Angle b is 0-20 °.Preferably, angle b of the rotation of blade 35 is 15 °.Certainly, anglec of rotation b of blade 35 can also be more than
20 °, it is not limited thereto.When being installed, 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, vane diffuser B can also include the rotation for limiting driving ring 1
The angle limit part of angle.I.e. when driving ring 1 turns to set angle, due to the effect of angle limit part, driving ring 1 can not
It is further continued for rotating.
Circumferential locating part can be specially bearing 4, and guide rod 34 passes through bearing 4.Through hole is opened up on bearing 4, guide rod 34 is worn
Cross through hole.It is arranged such, 4 position of bearing is fixed, it is circumferentially displaced that the hole wall of through hole carries out spacing its generation of prevention to guide rod 34, and
Guide rod 34 can surround own axis in through hole.
Further, block 41 is provided with bearing 4, in driving ring 1, is provided with limited block 11, driving ring 1 rotates the time limit
Position block 11 can offset spacing to carry out to limited block 11 with block 41.So block 41 and limited block 11 collectively form angle limit
Part, i.e., when driving ring 1 turns to set angle, the limited block 11 in driving ring 1 offsets to prevent to drive with the block 41 on bearing 4
Rotating ring 1 is rotated further.Wherein the quantity of block 41 can be two, and when driving ring 1 is rotated, limited block 11 is only capable of in two blocks
Rotate between 41, two blocks 41 can be limited to the positive gyration and reverse angle of driving ring 1 respectively.If limited block 11
And two blocks 41 coordinated with which are referred to as an angle limit part, then vane diffuser B can arrange multiple angle limits
Part, is preferably set up three angle limit parts, and three angle limit parts is circumferential uniform along driving ring 1.
Certainly, angle limit part can also be the fastener of the outfan collapsing length for limiting actuator, concrete fastener restriction
The collapsing length of actuator outfan, and then limit the rotational angle of driving ring 1.
As shown in figure 4, in order to prevent connecting rod 32 in 1 rotation process of driving ring from overturning, between connecting rod 32 and control-rod 33
Angle a should be not more than 160 °, otherwise be easy to cause connecting rod 32 to be overturned due to rigging error in assembling process, finally lead
Cause total failure.
In the vane diffuser B for improving in the present embodiment, can offer on mounting hole, and guide rod 34 on blade 35
It is provided with the kidney-shaped axle 34a coordinated with mounting hole.Drive blade 35 to rotate when so ensure that guide rod 34 is rotated, and both are coaxial
Rotate.Further, guide rod 34 is fixed with nut through the end of mounting hole, and guide rod 34 and blade 35 pass through nut check, i.e.,
Nut check is so that guide rod 34 and blade 35 are relatively fixed.2-6 breach can be carried outside nut, it is preferential to select 2 or 4
Individual, breach blocks rear rotating nut with the blade 35 that is locked for frock.
Certainly, blade 35 can with 34 interference fit of guide rod, be not limited thereto.
In order to ensure the intensity of blade 35, the mounting hole of blade 35 is preferably opened in the maximum position of its thickness.Blade 35
Inlet Position be referred to as leading edge, outlet position is referred to as the distance between trailing edge, leading edge trailing edge and is referred to as chord length L, starts meter from leading edge
Calculate, 35 thickness maximum position of blade 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 larger drag effects air-flow, at the maximum gauge of blade 35, be provided with counterbore, locking-blade 35
Nut sink in counterbore.Also, counterbore and mounting hole are collectively forming shoulder hole.
When processing shoulder hole is not enough at the maximum gauge of blade 35, can arrange convex at the maximum gauge of blade 35
Rise, the minimum range of the hole wall of shoulder hole away from convex outer surface is 1.5-3mm.Raised outer surface is preferably cambered surface.Preferably,
Minimum range of the hole wall of shoulder hole away from convex outer surface is 2mm, if minimum range of the hole wall of shoulder hole away from convex outer surface
Too it is little then process when easy edge damage, can then cause fluid that larger resistance is produced when passing through greatly very much.
Blade 35 can be airfoil fan.And blade 35 can process shape by way of cutting, milling or casting
Into, it is preferential from cutting, the mode of milling, can so ensure 35 surface smoothness of blade, reduce friction loss.Work as fluid flow
When less, 35 size shape of blade is less, should not use casting method, cast blade 35 be only applicable to fluid flow it is larger when
Blade 35.
Vane diffuser B can be unsuitable excessive for low denseness vane diffuser, i.e. 35 quantity of blade, and otherwise structure is difficult
Arrangement, in general 35 quantity of blade can be 5～15, optimum selection 9～11.
Based on the vane diffuser provided in above-described embodiment, this utility model additionally provides a kind of rotating machinery structure,
The rotating machinery structure includes any one vane diffuser in above-described embodiment.Due to the rotating machinery structure employ it is above-mentioned
Vane diffuser in embodiment, so the beneficial effect of the rotating machinery structure refer to above-described embodiment.
Specifically, the rotating machinery structure can be centrifugal compressor, aerator, centrifugal water pump or air compressor machine.When the rotation
Turn frame for movement can for centrifugal compressor when, which can be specially compound compressor or single-stage compressor.
When rotating machinery structure is centrifugal compressor, driving ring 1 drives the direction of rotation of blade 35 press with centrifugation
The impeller direction of rotation of contracting machine is consistent.As shown in figure 8, vane diffuser B is inside compressor box A, the master of compressor
Axle D impellers rotate together, and impeller C is the acting element of whole compressor, and vane diffuser B blades are located at the air-out of impeller
In passage E.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use that this practicality is new
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (24)
1. a kind of vane diffuser, it is characterised in that including driving ring (1), the forward and reverse rotation of the driving ring (1) can be driven
Driving means (2) and along the circumferentially disposed multiple blade assemblies (3) of the driving ring (1), blade assembly (3) bag
Include：
Connecting rod (32), one end of the connecting rod (32) are rotated with the outside of the driving ring (1) and are connected, and both relative rotations
The diameter parallel of axis and the driving ring (1)；
The other end of one end and the connecting rod (32) rotates the control-rod (33) be connected, and both relative rotation axis with it is described
The diameter parallel of driving ring (1)；
The guide rod (34) that one end is fixedly connected with the other end of the control-rod (33), and the guide rod (34) and control-rod (33)
It is mutually perpendicular to；
Circumferential locating part, the circumferential locating part can control the guide rod (34) it is circumferentially fixed and can around own axes turn
It is dynamic；
It is fixed on the blade (35) of the other end of the guide rod (34).
2. vane diffuser according to claim 1, it is characterised in that the driving means (2) are including actuator and
Hold and the pitman shaft (23) being connected, the other end and the driving ring of the pitman shaft (23) are rotated with the outfan of the actuator
(1) connection is rotated, along linear telescopic, which drives driving ring (1) by the pitman shaft (23) to the outfan of the actuator
Rotate.
3. vane diffuser according to claim 2, it is characterised in that the two ends of the pitman shaft (23) pass through spherical company
Joint (21) is connected with the outfan of the driving ring (1) and the actuator respectively.
4. the vane diffuser according to Claims 2 or 3, it is characterised in that the pitman shaft (23) and the actuator
Outfan between be additionally provided with drive shaft (22), and one end of the drive shaft (22) is rotated with pitman shaft (23) and is connected another
End is fixedly connected with the outfan of the actuator.
5. the vane diffuser according to Claims 2 or 3, it is characterised in that the actuator is linear stepping motor.
6. vane diffuser according to claim 1, it is characterised in that be fixed with the outside of the driving ring (1) multiple
Straight-bar (31), multiple blade assemblies (3) are connected on multiple straight-bars (31).
7. vane diffuser according to claim 6, it is characterised in that the two ends of the connecting rod (32) are by mounting pin point
It is not connected with the straight-bar (31) and control-rod (33).
8. vane diffuser according to claim 7, it is characterised in that the connecting rod (32) is flat rod, and straight-bar
(31) end and the end of control-rod (33) is respectively provided with perforate, connecting rod (32) two ends insert respectively the straight-bar (31) and
In the perforate of control-rod (33), the two ends of the flat rod are arc.
9. vane diffuser according to claim 1, it is characterised in that the guide rod (34) and the control-rod (33) are even
The end for connecing offers installing hole, and the control-rod (33) is through the installing hole.
10. vane diffuser according to claim 9, it is characterised in that the control-rod (33) is through the installing hole
End be fixed with nut, be additionally provided with the positionable wall offseted with the guide rod (34), the guide rod on the control-rod (33)
(34) it is fixedly clamped by the positionable wall and nut.
11. vane diffusers according to claim 1, it is characterised in that the angle that the blade (35) rotates is 0-
20°。
12. vane diffusers according to claim 11, it is characterised in that the angle that the blade (35) rotates is 15 °.
13. vane diffusers according to claim 1, it is characterised in that also including the rotation for limiting the driving ring (1)
The angle limit part of angle.
14. vane diffusers according to claim 1, it is characterised in that the circumferential locating part is specially bearing (4),
And the guide rod (34) is through the bearing (4).
15. vane diffusers according to claim 14, it is characterised in that be provided with block (41) on the bearing (4),
And limited block (11) on the driving ring (1), is provided with, when the driving ring (1) rotates, the limited block (11) can be with the gear
Block (41) offsets spacing to carry out to the limited block (11).
16. vane diffusers according to claim 1, it is characterised in that between the connecting rod (32) and control-rod (33)
Angle be not more than 160 °.
17. vane diffusers according to claim 1, it is characterised in that mounting hole and described is offered on the blade
The kidney-shaped axle (34a) coordinated with the mounting hole is provided with guide rod (34).
18. vane diffusers according to claim 17, it is characterised in that the guide rod (34) is through the mounting hole
End is fixed with nut, and the guide rod (34) and blade (35) are by nut check.
19. vane diffusers according to claim 17, it is characterised in that the mounting hole of the blade (35) is opened in which
The maximum position of thickness, the chord length of the blade (35) is L, and maximum gauge is positioned at the Inlet Position away from the blade (35)
At 0.3L-0.5L.
20. vane diffusers according to claim 19, it is characterised in that be provided with the maximum gauge of the blade (35)
Counterbore, the nut for locking the blade (35) are sunk in the counterbore, and the counterbore and the 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 the blade (35)
There is projection, and minimum range of the hole wall of the shoulder hole away from the convex outer surface is 1.5-3mm.
22. a kind of rotating machinery structures, it is characterised in that include the blade diffusion as any one of claim 1-20
Device.
23. rotating machinery structures according to claim 22, it is characterised in that the 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 the rotating machinery structure is centrifugal compressed
Machine, the driving ring (1) drive the direction of rotation of blade (35) consistent with the impeller direction of rotation of the centrifugal compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158083.8U CN206144857U (en) | 2016-10-25 | 2016-10-25 | Rotary mechanical structure and vane diffuser thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158083.8U CN206144857U (en) | 2016-10-25 | 2016-10-25 | Rotary mechanical structure and vane diffuser thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206144857U true CN206144857U (en) | 2017-05-03 |
Family
ID=58622374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621158083.8U Active CN206144857U (en) | 2016-10-25 | 2016-10-25 | Rotary mechanical structure and vane diffuser thereof |
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| Country | Link |
|---|---|
| CN (1) | CN206144857U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286406A (en) * | 2016-10-25 | 2017-01-04 | 珠海格力电器股份有限公司 | Rotary mechanical structure and vane diffuser thereof |
-
2016
- 2016-10-25 CN CN201621158083.8U patent/CN206144857U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286406A (en) * | 2016-10-25 | 2017-01-04 | 珠海格力电器股份有限公司 | Rotary mechanical structure and vane diffuser thereof |
| CN106286406B (en) * | 2016-10-25 | 2018-04-20 | 珠海格力电器股份有限公司 | Rotary mechanical structure and vane diffuser thereof |
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