CN209539655U - A kind of two-part can be changed the guide vane structure of camber - Google Patents
A kind of two-part can be changed the guide vane structure of camber Download PDFInfo
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- CN209539655U CN209539655U CN201822165384.9U CN201822165384U CN209539655U CN 209539655 U CN209539655 U CN 209539655U CN 201822165384 U CN201822165384 U CN 201822165384U CN 209539655 U CN209539655 U CN 209539655U
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- stator blade
- guide vane
- leading edge
- rocker arm
- camber
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Abstract
The utility model discloses the guide vane structures that a kind of two-part can be changed camber, it is related to guide vane technical field, the technical issues of solving and may cause working medium generation flow separation phenomenon when existing guide vane structure increases with the angle of attack that working medium is formed, increasing aerodynamic loss with aeroperformance decline.A kind of two-part can be changed the guide vane structure of camber, including sliding block, rocker arm is connected with below the sliding block, the rocker arm is connected with stator blade bearing by attachment screw, the outer cover of the stator blade bearing is equipped with stationary blade casing, and the internal sleeve of the stator blade bearing is equipped with shaft, is connected with stator blade below the shaft, the stator blade includes stator blade leading edge and stator blade rear, and the stator blade leading edge is fixed on the bottom of stationary blade casing by attachment screw in a manner of bolted.
Description
Technical field
The utility model belongs to guide vane technical field, can be changed the guide vane knot of camber more particularly to a kind of two-part
Structure.
Background technique
Guide vane is turn energy device of centrifugal pump, its effect is impeller to be thrown away the liquid come to collect, and makes liquid
Flow velocity reduces, and after partial velocity energy head is changed into pressure energy head, then is uniformly introduced next stage or is discharged by diffuser.
Nowadays, air-flow when axial flow compressor works flows into inlet plenum with vertical unit axis direction, at axial rotation after 90 degree of turnover
Stream enters entry guide vane.Traditional inlet guide vane is integral blade, and when adjusting is rotated by crank around own rotation axis to reach
To the purpose for changing working conditions of compressor, when blade is rotated up to larger angle, blade leading portion is formed with intake flow direction
It crosses wide-angle and causes air-flow stall, Blade Properties decline.
Utility model content
In order to overcome above-mentioned technical deficiency, the utility model provides a kind of guide vane structure of variable camber of two-part, solves
The guide vane structure that existing two-part can be changed camber the face gear of tooth set and outer Knucle-gear directly can not be avoided into machining and
Direct forging molding, so that the technical problem that processing efficiency is lower.
The utility model to achieve the goals above, specifically uses following technical scheme:
A kind of two-part can be changed the guide vane structure of camber, including sliding block, be connected with rocker arm below the sliding block, described
Rocker arm is connected with stator blade bearing by attachment screw, and the outer cover of the stator blade bearing is equipped with stationary blade casing, the static rachis
The internal sleeve held is equipped with shaft, is connected with stator blade below the shaft, and the stator blade includes stator blade leading edge and quiet
Trailing edge, the stator blade leading edge 7 are fixed on the bottom of stationary blade casing by attachment screw in a manner of bolted.
Further, the length ratio of stator blade leading edge and stator blade rear is 1: 2, by stator blade along axial by best long
Degree ratio 1: 2 is divided into two-part structure, leading portion be it is fixed and unadjustable, rear end can adjust corner by crank, when quiet
Trailing edge can be adjusted working conditions of compressor when rotating, and stator blade leading edge does not rotate, when solving entry guide vane rotation
The flow separation state easily occurred, structure is simple and using effect is splendid.
Further, there are gap between stator blade leading edge and stator blade rear, the length in the gap is stator blade string
The gap junctions of long 2~4%, the stator blade leading edge and stator blade rear are the matching design of circular shape, when quiet
Blade is under high load capacity operating condition, and this gap design can play certain blowing boundary-layer, and flow separation becomes under decrease adverse pressure gradient
Gesture, to high load capacity design axial flow compressor variable parameter operation when have good effect.
Further, when rocker arm band rotor and stator blade rear forwards dynamic around static rachis, the stator blade leading edge is to fix
Motionless state can be adjusted working conditions of compressor when the rotation of stator blade rear, and stator blade leading edge does not rotate, and solves
The flow separation state easily occurred when entry guide vane rotation, structure is simple and using effect is splendid.
The working principle of the utility model are as follows:
When the utility model is used, starting reduced overall machine equipment, executing agency's band movable slider is slided, the sliding of sliding block
Rocker arm rotation is driven, thus make rocker arm band rotor and stator blade around stator blade bearing rotary, angle [alpha] rising between stator blade and rocker arm
Beginning established angle, washed on the petiole of stator blade two it is flat, cooperate with the keyway of rocker arm, to reach the work of transmitting torque and positioning
With stator blade rear rotates to the position of α 1 under the drive of rocker arm at this time, and stator blade leading edge is fixed on quiet by attachment screw
Leaf holds fixed on cylinder, to play the role of adjusting static blade angle, stator blade leading edge connect with the gap of stator blade rear
Place is the matching design of circular shape, and when stator blade is under high load capacity operating condition, this gap design can play certain blowing boundary-layer,
Weaken adverse pressure gradient under flow separation trend, to high load capacity design axial flow compressor variable parameter operation when have good effect
Fruit.
The utility model compared with prior art, the utility model has the following beneficial effects:
1, former entry guide vane by being divided into two-stage structure, stator blade leading edge by optimal proportion along axial direction by the utility model
Non-adjustable for fixation, stator blade rear adjusts corner by crank, can carry out to working conditions of compressor when end blade rotation
It adjusts, is not rotated through blade inlet edge, this structure design flow separation state easily occurs when solving entry guide vane rotation.
2, the utility model guide vane design cracking there are certain interval between leading portion, endpiece, when blade high load capacity work
Under condition, certain blowing boundary-layer can be played, the trend of flow separation under adverse pressure gradient is weakened, the axis stream of high load capacity design is compressed
There is good effect when machine variable parameter operation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model:
Fig. 2 is the overlooking structure diagram of the utility model；
Fig. 3 is the present invention looks up structural representation of the utility model；
Fig. 4 is the schematic diagram of former guide vane structure
Appended drawing reference: 1, sliding block, 2, attachment screw, 3, rocker arm, 4, stator blade bearing, 5, stationary blade casing, 6, stator blade, 7, quiet
Blade inlet edge, 8, stator blade rear, 9, attachment screw.
Specific embodiment
In order to which those skilled in the art better understand the utility model, with reference to the accompanying drawing with following embodiment to this
Utility model is described in further detail.
Embodiment 1: as shown in Figures 1 to 4, example provides a kind of guide vane structure of variable camber of two-part, including sliding block 1,
Rocker arm 3 is connected with below the sliding block 1, the rocker arm 3 is connected with stator blade bearing 4, the stator blade by attachment screw 2
The outer cover of bearing 4 is equipped with stationary blade casing 5, and the internal sleeve of the stator blade bearing 4 is equipped with shaft, is connected with below the shaft
Stator blade 6, the stator blade 6 include stator blade leading edge 7 and stator blade rear 8, and the stator blade leading edge 7 passes through connection spiral shell
Nail 9 is fixed on the bottom of stationary blade casing 5 in a manner of bolted.
The working principle of the utility model are as follows:
When the utility model is used, starting reduced overall machine equipment, executing agency's band movable slider 1 is slided, the cunning of sliding block 1
Dynamic that rocker arm 3 is driven to rotate, so that rocker arm 3 be made to rotate with rotor and stator blade 6 around stator blade bearing 4, angle [alpha] is stator blade 6 and rocker arm 3
Between starting established angle, washed on the petiole of stator blade 6 two it is flat, cooperate with the keyway of rocker arm 3, to reach transmitting torque
And the effect of positioning, stator blade rear 8 rotates to the position of α 1 under the drive of rocker arm at this time, and stator blade leading edge 7 passes through connection
Screw 9 be fixed on it is fixed on stationary blade casing 5, to play the role of adjusting static blade angle, stator blade leading edge 7 and stator blade
The gap junctions of rear 8 are the matching design of circular shape, and when stator blade 6 is under high load capacity operating condition, this gap design can be risen
Boundary-layer is blown down to certain, weakens the trend of flow separation under adverse pressure gradient, the axial flow compressor variable working condition to high load capacity design
There is good effect when operation.
Embodiment 2: as shown in what Fig. 3 of Fig. 1, this implementation is to advanced optimize on the basis of embodiment 1, the present embodiment weight
Point illustrates improvements compared with Example 1, and something in common repeats no more, the stator blade leading edge 7 and stator blade rear 8
Length ratio be 1: 2, stator blade 6 is divided into two-part structure by optimum length ratio 1: 2 along axial, leading portion be fixation not
Adjustable, rear end can adjust corner by crank, can adjust to working conditions of compressor when stator blade rear 8 is rotated
Section, stator blade leading edge 7 do not rotate, and solve the flow separation state easily occurred when entry guide vane rotation, structure is simple and uses
Excellent.
Embodiment 3: as shown in figure 3, this implementation is to advanced optimize on the basis of embodiment 1, the present embodiment emphasis is explained
Improvements compared with Example 1 are stated, something in common repeats no more, between the stator blade leading edge 7 and stator blade rear 8
There are gap, the length in the gap is the 2~4% of 6 chord length of stator blade, the stator blade leading edge 7 and stator blade rear 8
Gap junctions are the matching design of circular shape, and when stator blade 6 is under high load capacity operating condition, this gap design, which can play, centainly blows
Except boundary-layer, weaken the trend of flow separation under adverse pressure gradient, has when to the axial flow compressor variable parameter operation of high load capacity design
Good effect.
Embodiment 4: as shown in Figure 1, this implementation is to advanced optimize on the basis of embodiment 1, the present embodiment emphasis is explained
Improvements compared with Example 1 are stated, something in common repeats no more, and the rocker arm 3 surrounds stator blade with rotor and stator blade rear 8
When bearing 4 rotates, the stator blade leading edge 7 is fixed state, can be to compressor when stator blade rear 8 rotates
Operating condition is adjusted, and stator blade leading edge 7 does not rotate, and solves the flow separation state easily occurred when entry guide vane rotation, structure
Simple and using effect is splendid.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (5)
1. the guide vane structure that a kind of two-part can be changed camber, which is characterized in that including sliding block (1), connect below the sliding block (1)
It is connected to rocker arm (3), the rocker arm (3) is connected with stator blade bearing (4) by attachment screw (2), the stator blade bearing (4)
Outer cover is equipped with stationary blade casing (5), and the internal sleeve of the stator blade bearing (4) is equipped with shaft, is connected with below the shaft quiet
Blade (6), the stator blade (6) include stator blade leading edge (7) and stator blade rear (8), and the stator blade leading edge (7) is logical
Cross the bottom that attachment screw (9) is fixed on stationary blade casing (5) in a manner of bolted.
2. the guide vane structure that two-part according to claim 1 can be changed camber, which is characterized in that the stator blade leading edge
It (7) is 1: 2 with the length ratio of stator blade rear (8).
3. the guide vane structure that two-part according to claim 1 can be changed camber, which is characterized in that the stator blade leading edge
(7) there are gap between stator blade rear (8), the length in the gap is the 2~4% of stator blade (6) chord length.
4. the guide vane structure that two-part according to claim 1 can be changed camber, which is characterized in that the stator blade leading edge
It (7) is the matching design of circular shape with the gap junctions of stator blade rear (8).
5. the guide vane structure that two-part according to claim 1 can be changed camber, which is characterized in that described rocker arm (3) band
When rotor and stator blade rear (8) is rotated around stator blade bearing (4), the stator blade leading edge (7) is fixed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822165384.9U CN209539655U (en) | 2018-12-21 | 2018-12-21 | A kind of two-part can be changed the guide vane structure of camber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822165384.9U CN209539655U (en) | 2018-12-21 | 2018-12-21 | A kind of two-part can be changed the guide vane structure of camber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209539655U true CN209539655U (en) | 2019-10-25 |
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ID=68265365
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822165384.9U Active CN209539655U (en) | 2018-12-21 | 2018-12-21 | A kind of two-part can be changed the guide vane structure of camber |
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| CN (1) | CN209539655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577666A (en) * | 2020-04-26 | 2020-08-25 | 西安陕鼓备件辅机制造有限公司 | Stator blade crank slider mechanism for turbine compressor |
-
2018
- 2018-12-21 CN CN201822165384.9U patent/CN209539655U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577666A (en) * | 2020-04-26 | 2020-08-25 | 西安陕鼓备件辅机制造有限公司 | Stator blade crank slider mechanism for turbine compressor |
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