CN107957326A - A kind of testing machine - Google Patents
A kind of testing machine Download PDFInfo
- Publication number
- CN107957326A CN107957326A CN201610902579.XA CN201610902579A CN107957326A CN 107957326 A CN107957326 A CN 107957326A CN 201610902579 A CN201610902579 A CN 201610902579A CN 107957326 A CN107957326 A CN 107957326A
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- Prior art keywords
- blade
- testing machine
- chamber
- fixture
- rack
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The present invention provides a kind of testing machine, for the blade examinations to air compressor；Including：Rack；The upper fixture being arranged in the rack and lower fixture；The upper fixture and the lower fixture are respectively used to the both ends of the clamping blade, and apply the pulling force of setting to the blade to simulate the centrifugal force suffered by the blade；The upper fixture is provided with pulling force sensor；The chamber being arranged on the erecting bed of the rack, the chamber are used to be located at the blade；It is arranged on the rack, and the air feed system connected with the chamber, the air feed system is used to divulging information into the chamber with to load caused by the vane simulated application fluid media (medium).Above-mentioned experiment function solves the problems, such as at present to simulate blade respectively that existing simulation is ineffective and simulation precision is relatively low.
Description
Technical field
The present invention relates to technical field of test equipment, more particularly to a kind of testing machine.
Background technology
Impeller is the important component of air compressor, is to ensure air compressor performance, reliability, the weight of durability
Want parts.
In the course of work of air compressor, high-speed rotating impeller can do work flow media (i.e. air), relatively
Answer, flow media can produce reaction force in impeller passage to the blade of impeller, and then be easier to cause blade generation tired
Strain bad.Therefore, load caused by flow media is to remanufacture the important composition of service load during the secondary military service of impeller
Part.In addition, high-speed rotating blade can bear larger centrifugal force, and then be easier to so that blade surface and internal production
The defects of raw micro-crack.As it can be seen that the durability of military service performance military service to impeller of the blade in the case where bearing centrifugal force effect, reliable
Property is of great significance.
Impeller remanufacture or production process in, the performance test of impeller is subsequently produced impeller in batches with instructing meaning
Justice, but current manufacturer is all that blade is implemented to test using special independent equipment, i.e., is produced using special equipment
Raw high pressure wind field carrys out simulated impeller work operating mode, centrifugal force is applied using special equipment come simulate under blade working state by
Field of force scape.It will be apparent that above-mentioned simulation is each independent, it is difficult to which (real working condition was both situated between the real working condition of simulation blade by flowing completely
Load is subject to centrifugal force again caused by matter), experiment effect is influenced, at the same time, separately carrying out performance simulated experiment can influence
To the conventional efficient of blade.
The content of the invention
The object of the present invention is to provide a kind of testing machine, to solve at present to simulate blade respectively existing simulation
The problem of ineffective and simulation precision is relatively low.
To achieve these goals, the present invention provides following technical solution：
A kind of testing machine, for the blade examinations to air compressor；Including：
Rack；
The upper fixture being arranged in the rack and lower fixture；The upper fixture and the lower fixture are respectively used to clamping institute
State the both ends of blade, and apply the pulling force of setting to the impeller to simulate the centrifugal force suffered by the blade；The upper fixture
It is provided with pulling force sensor；
The chamber being arranged on the erecting bed of the rack, the chamber are used to be located at the blade；
The rack, and the air feed system connected with the chamber are arranged on, the air feed system is used for the examination
Ventilation is with to load caused by the vane simulated application fluid media (medium) in tryoff.
Preferably, in above-mentioned testing machine, the air feed system includes air blower and ventilation shaft, and the one of the ventilation shaft
End connects the air outlet of the air blower, and the other end connects the chamber.
Preferably, in above-mentioned testing machine, further include wind pressure adjusting device, the wind pressure adjusting device include servomotor and
The converter plant being connected with the servomotor, the converter plant include：
The valve body being arranged on the ventilation shaft；
The valve seat being arranged in the valve body；And the spool coordinated with the valve seat, the spool pass through connection
Axis is connected with the servomotor；The servomotor drives the spool to be rotated relative to the valve seat by the connecting shaft
To realize that the valve body is being closed and switched under opening.
Preferably, in above-mentioned testing machine, the lower fixture includes：
The clamp base being arranged on the erecting bed；
It is arranged in the clamp base, and symmetrical two fixture blocks；Two fixture blocks are consolidated by bolt assembly
It is scheduled in the clamp base；The holding chamber for the bottom for being used to clamp the blade is formed between two fixture blocks.
Preferably, in above-mentioned testing machine, further include：
Worm gear mechanism；
The drive gear engaged with the clamp base, the drive gear are arranged on the output of the worm gear mechanism
On axis；Driving handle is provided with the worm gear mechanism；The worm gear mechanism is used to drive by the drive gear
The dynamic clamp base is rotated to adjust the direction of the holding chamber.
Preferably, in above-mentioned testing machine, the rack includes electric cylinder and bell crank lever；Wherein：
The electric cylinder is arranged at the bottom of the bell crank lever；
The upper fixture is arranged on the top of the bell crank lever, the electric cylinder can promote the bell crank lever so that
The upper fixture clamps the top of the blade.
Preferably, in above-mentioned testing machine, the top of the bell crank lever is provided with lifting gear, the lifting gear energy phase
Lifted for the top of the bell crank lever to adjust the distance between the upper fixture and the lower fixture.
Preferably, in above-mentioned testing machine, the electric cylinder is GSX series electric cylinders.
Preferably, in above-mentioned testing machine, controller, the controller and the pulling force sensor and the lifting are further included
Device is connected, and the controller is used to control the lifting gear to rise until the numerical value that the pulling force sensor is detected reaches
To setting value.
Preferably, in above-mentioned testing machine, oscillation system is further included, the oscillation system is arranged in the rack, and is used
In being connected with blade to drive the blade oscillating.
Testing machine provided by the invention can simulate the fluid media (medium) suffered by blade by air feed system and chamber
Caused load, centrifugal force suffered by blade is simulated by upper fixture, lower fixture and pulling force sensor.In the property to impeller
During implementing analog detection, the simulation provided by the invention tested in terms of function implements above two to blade at the same time,
And then simulation precision can be improved.At the same time, to the simulated experiment of two kinds of stressing conditions of blade, can more meet blade it is true by
Power situation, and then experiment effect can be improved.
Brief description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, drawings in the following description are only one described in the present invention
A little embodiments, for those of ordinary skill in the art, can also obtain other attached drawings according to these attached drawings.
Fig. 1 is the front view of testing machine provided in an embodiment of the present invention, and chamber is not shown in figure；
Fig. 2 is the side view of Fig. 1, and chamber is shown in figure；
Fig. 3 is the structure diagram of upper fixture provided in an embodiment of the present invention；
Fig. 4 is the side view of Fig. 3；
Fig. 5 is the structure diagram of lower fixture provided in an embodiment of the present invention；
Fig. 6 is the close-up schematic view of testing machine provided in an embodiment of the present invention；
Fig. 7 is the internal structure schematic diagram of converter plant provided in an embodiment of the present invention.
Embodiment
In order to make those skilled in the art more fully understand technical scheme, below in conjunction with attached drawing to this hair
It is bright to be further detailed.
Please refer to Fig.1 and Fig. 2, the embodiment of the present invention provides a kind of testing machine, for the blade to air compressor impeller
Implement experiment detection, to solve at present the Blade Properties of the impeller of air compressor to be carried out simulating existing simulation effect not
The problem of good and simulation precision is relatively low.
Testing machine shown in Fig. 1 and 2 includes rack 10, upper fixture 20, lower fixture 30, chamber 40, pulling force sensor 50
With air feed system 60.
Wherein, skeleton of the rack 10 as whole testing machine, for providing installation foundation for other parts.Upper fixture 20
It is arranged on lower fixture 30 in rack 10, in general, upper fixture 20 is arranged on the top of rack 10, lower fixture 30 is arranged on rack 10
Erecting bed on, it is also assumed that being the workbench of whole testing machine.Upper fixture 20 and lower fixture 30 are respectively used to clamping blade
70 both ends, are respectively top and bottom, upper fixture 20 and lower fixture 30 apply the pulling force of setting to blade 70 respectively, with simulation
Centrifugal force suffered by blade 70, in order to ensure the pulling force applied, can relatively accurately to simulate it suffered in the operating condition
Centrifugal force, pulling force sensor 50 is provided with upper fixture 20, pulling force sensor 50 is used to show the drawing being applied on blade 70
Power, when pulling force is insufficient, pulling force sensor 50 can play the follow-up suggesting effect adjusted again.
Chamber 40 is used for the erecting bed for being arranged on rack 10, and the effect of chamber 40 is to be located on blade 70,
To provide the simulated environment of a relative closure.Air feed system 60 is arranged in rack 10, and is connected with chamber 40, air feed system
System 60 is divulged information into chamber 40, so that airflow function is finally reached simulation blade on the blade 70 in chamber 40
The purpose of load caused by 70 in running order lower suffered flow medias.
It is known that the centrifugal force feature that the blade 70 of the impeller under high speed rotation state is subject to is as follows：Centrifugal force
Constant magnitude, the direction of centrifugal force determines, i.e., outside along radius of turn.Based on this, the application is using the higher static(al) of precision
That is static tensile force simulates the centrifugal force suffered by blade 70.It is right by upper fixture 20 and lower fixture 30 during simulation
The pulling force that blade 70 is applied achieve the purpose that static(al) apply.Specifically, can be by adjusting upper fixture 20 and lower fixture 30
Between clamping distance adjust static(al) size, can also be adjusted by the table upper fixture 20 relative to the position of lower fixture 30
The size of static(al).As described above, during above-mentioned adjusting, it can be coordinated by pulling force sensor 50 and realized.
Air feed system 60 implements active force to drying within chamber 40 to the blade in chamber 40, to simulate
Stressing conditions when blade 70 works in air compressor inner cavity.
By described above, testing machine provided in an embodiment of the present invention can pass through air feed system 60 and chamber 40
To simulate load caused by the fluid media (medium) suffered by blade 70, pass through upper fixture 20, lower fixture 30 and pulling force sensor 50
To simulate centrifugal force suffered by blade.During analog detection is implemented to the performance of blade, experiment provided in this embodiment
Function is at the same time to the simulation in terms of blade implementation above two, and then simulation precision can be improved.At the same time, to two kinds of blade by
The simulated experiment of power situation, can more meet the true stressing conditions of blade, and then can improve experiment effect.
In the present embodiment, the effect of upper fixture 20 and lower fixture 30 is the top and bottom for clamping blade 70, in realization
State the species of the clamping device of function have it is a variety of.Please refer to Fig.3 and Fig. 4, the embodiment of the present invention provide a kind of the upper of concrete structure
Fixture 20, the upper fixture 20 provided are an integral structure, and top is provided with top hinge hole 201, and bottom is provided with bottom hinge
Hole 202 is connect, top hinge hole 201 is hinged by articulated shaft and the top of rack 10, and bottom hinge hole 202 passes through articulated shaft and leaf
The top of piece 70 is hinged, and above-mentioned hinged mode causes blade 70, and under by load effect caused by fluid media (medium), energy is micro
Swing, and then can more precisely simulate caused swing in 70 course of work of blade, and then can more preferable simulation blade
70 stress scene.Specifically, testing machine provided in this embodiment can also include oscillation system, the oscillation system and blade
70 connections, energy active drive blade 70 are swung in appropriate angular range.
Equally, the embodiment of the present invention provides a kind of lower fixture 30 of concrete structure, refer to Fig. 5, the lower fixture provided
30 include 301, two fixture blocks 302 of clamp base and bolt assembly 303.Clamp base 301 is arranged on erecting bed, two fixture blocks
302 symmetries are arranged in clamp base 301, and two fixture blocks 302 are fixed in clamp base 301 by bolt assembly 303, and two
The holding chamber for being used for clamping 70 bottom of blade is formed between a fixture block 302.Specifically, two fixture blocks 302 can movably be set
In clamp base 301, then realized and fixed by bolt assembly 303, the mobile width that can change holding chamber of two fixture blocks 302
Degree, and then adapt to the blade 70 of different size.
Referring again to Fig. 5, testing machine provided in this embodiment can also include worm gear mechanism 304 and drive gear
305, wherein, drive gear 305 is engaged with clamp base 301, that is to say, that and clamp base 301 circumferentially has engaging tooth,
And it can be rotated relative to clamp base 301.Drive gear 305 is arranged on the output shaft of worm gear mechanism 304, worm gear snail
Linkage 304 is provided with driving handle, operates driving handle to drive worm gear mechanism 304 and then realize drive gear 305
Rotate, the rotation of drive gear 305 can drive clamp base 301 to rotate, be finally reached the purpose that can adjust holding chamber direction.It is logical
Handle drives of overdriving turbine and worm mechanism 304 implements angle to lower fixture 30 and is adjusted, and controls simply, conveniently, while snail
Worm and gear mechanism 304 has self-locking effect, can ensure the testing position of blade 70.Can on the surfaces of revolution of clamp base 301
To be disposed with the tiny frictional force for thering is oil duct to be lubricated, reducing contact surface, it is easier to adjust angle.
Referring again to Fig. 1 and 2, a kind of rack 10 of concrete structure is provided in the present embodiment, which includes electronic
Cylinder 101 and bell crank lever 102, wherein, electric cylinder 101 is arranged on the bottom of bell crank lever 102, and upper fixture 20 is arranged on right angle thick stick
The top of bar 102, electric cylinder 101 can promote the bell crank lever 102 to swing to reach folder to adjust and then pull upper fixture 20 indirectly
Tight 70 top of blade, and apply the purpose of pulling force.Bell crank lever 102 can play the mesh for adjusting 20 layout angle of upper fixture and position
, meanwhile, by reasonably arrange bell crank lever 102 fulcrum can bell crank lever 102 thrust of electric cylinder 101 is put
Greatly, while the transformation of 101 thrust direction of electric cylinder is realized.It is larger in view of 102 stress of bell crank lever, to realize high intensity weight
The requirement of amount, the structure design of bell crank lever 102 is weldment by we, and is designed rational floor and gusset and improved right angle thick stick
The integral strength of bar 102.In the present embodiment, rack 10 passes through high-precision electrical servo system (electric cylinder) and bell crank lever
102 loading, can realize the accurate loading of static(al).
In the application, electric cylinder 101 is used as power source, can use the GSX series electric cylinders of import.The series electric cylinder
Planetary roller screw and rotor are organically combined, planetary roller is evenly distributed with around main leading screw, and accurate machine loads
In sleeve rotor, ensure and rotor absolute synchronization.The T-LAM stator-sectional lamination techniques that the series of servo electric cylinder uses can
The moment of torsion of higher is persistently exported than conventional motor, there is absolute coil winding, sectionalized stator combines the highest that ensure that motor
Can, the effect of motor can be improved, while the hot merit effect of electrical-coil generation can be effectively reduced, eliminate stator end and rotate, utilize
Thermo-conductive ceramic substitutes the parts of conventional motors, improves reliability.The electric cylinder 101 is in advanced closed loop servo system at the same time
In, speed, thrust and position can be accurately controlled, control accuracy reaches 0.02mm.
Referring again to Fig. 1 and 2, in the present embodiment, the top of bell crank lever 102 can be provided with lifting gear 103, rise
Falling unit 103 can be lifted to adjust the distance between upper fixture 20 and lower fixture 30 relative to the top of bell crank lever 102, and then
Playing adjusting indirectly, both put on the purpose of 70 upper pulling force of blade.Specifically, lifting gear 103 can use Screw of Worm Gear liter
Drop machine, can facilitate the clamping of blade 70 using worm wheel screw rod lifting machine, have compact-sized, light-weight, noiseless, bearing capacity
By force, self-locking, the advantages that push rod is anti-rotational, reliability is high, service life is long.At the same time, the lifting moving energy of lifting gear 103
The leveling of auxiliary adjustment bell crank lever 102 and ensure load straight up.
Testing machine provided in this embodiment can also include controller, controller and pulling force sensor 50 and lifting gear
103 are connected, and controller is used to control lifting gear 103 to rise until the numerical value that pulling force sensor 50 is detected reaches setting
Value.Specifically, controller can be according to the real-time value of thrust that pulling force sensor 50 is detected compared with setting value, and then control and rise
The start and stop of falling unit 103.This PID control method can preferably ensure the high accuracy loading of static(al).
It refer to Fig. 6, in testing machine provided in an embodiment of the present invention, air feed system 60 includes air blower 601 and ventilation duct
Road 602, the air outlet connection of one end connection air blower 601 of ventilation shaft 602, other end joint test case 40, and then realize
The purpose blown into chamber 40.Incorporated by reference to reference to figure 7, the air feed system 60 provided can also include servomotor 603
With the converter plant 604 being connected with the servomotor 603, the converter plant 604 includes valve body 6041, valve seat 6042, valve
Core 6043 and connecting shaft 6044.Wherein：Valve body 6041 is arranged on ventilation shaft 602, and valve seat 6042 is arranged in valve body 6041,
Spool 6043 coordinates with valve seat 6042, and valve body 6041 is connected by connecting shaft 6044 with servomotor 603, and servomotor 603 is logical
Crossing connecting shaft 6044 drives spool 6043 to be rotated relative to valve seat 6042 to realize valve body 6041 in closure and opening incision
Change, finally realize that the logical of ventilation shaft 602 closes.Certainly, the rotational angle difference of spool 6043 can opening with regulation valve body 6041
Degree, achievees the purpose that more accurate control air quantity.
Some one exemplary embodiments that only the invention has been described by way of explanation above, undoubtedly, for ability
The those of ordinary skill in domain, without departing from the spirit and scope of the present invention, can be with a variety of modes to institute
The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention
The limitation of claims.
Claims (10)
- A kind of 1. testing machine, for the blade examinations to air compressor；It is characterised in that it includes：Rack；The upper fixture being arranged in the rack and lower fixture；The upper fixture and the lower fixture are respectively used to the clamping leaf The both ends of piece, and apply the pulling force of setting to the blade to simulate the centrifugal force suffered by the blade；The upper fixture is set There is pulling force sensor；The chamber being arranged on the erecting bed of the rack, the chamber are used to be located at the blade；The rack, and the air feed system connected with the chamber are arranged on, the air feed system is used for the chamber It is interior ventilation with to it is described it is vane simulated application fluid media (medium) caused by load.
- 2. testing machine as claimed in claim 1, it is characterised in that the air feed system includes air blower and ventilation shaft, institute The one end for stating ventilation shaft connects the air outlet of the air blower, and the other end connects the chamber.
- 3. testing machine as claimed in claim 2, it is characterised in that further include wind pressure adjusting device, the wind pressure adjusting device The converter plant being connected including servomotor and with the servomotor, the converter plant include：The valve body being arranged on the ventilation shaft；The valve seat being arranged in the valve body；And with the valve seat coordinate the spool, the spool by connecting shaft with The servomotor is connected；The servomotor drives the spool to be rotated relative to the valve seat with reality by the connecting shaft The existing valve body is being closed and switched under opening.
- 4. testing machine as claimed in claim 1, it is characterised in that the lower fixture includes：The clamp base being arranged on the erecting bed；It is arranged in the clamp base, and symmetrical two fixture blocks；Two fixture blocks are fixed on by bolt assembly In the clamp base；The holding chamber for the bottom for being used to clamp the blade is formed between two fixture blocks.
- 5. testing machine as claimed in claim 4, it is characterised in that further include：Worm gear mechanism；The drive gear engaged with the clamp base, the drive gear are arranged on the output shaft of the worm gear mechanism On；Driving handle is provided with the worm gear mechanism；The worm gear mechanism is used to drive by the drive gear The clamp base is rotated to adjust the direction of the holding chamber.
- 6. testing machine as claimed in claim 1, it is characterised in that the rack includes electric cylinder and bell crank lever；Wherein：The electric cylinder is arranged at the bottom of the bell crank lever；The upper fixture is arranged on the top of the bell crank lever, and the electric cylinder can promote the bell crank lever so that described Upper fixture clamps the top of the blade.
- 7. testing machine as claimed in claim 6, it is characterised in that the top of the bell crank lever is provided with lifting gear, institute State lifting gear can relative to the top of the bell crank lever lift with adjust between the upper fixture and the lower fixture away from From.
- 8. testing machine as claimed in claim 7, it is characterised in that the electric cylinder is GSX series electric cylinders.
- 9. testing machine as claimed in claim 7, it is characterised in that further include controller, the controller is passed with the pulling force Sensor is connected with the lifting gear, and the controller is used to control the lifting gear to rise until the pulling force sensor The numerical value detected reaches setting value.
- 10. the testing machine as described in any one in claim 1-9, it is characterised in that further include oscillation system, the swing System is arranged in the rack, and for being connected with blade to drive the blade oscillating.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610902579.XA CN107957326A (en) | 2016-10-17 | 2016-10-17 | A kind of testing machine |
| US15/784,290 US10302537B2 (en) | 2016-10-17 | 2017-10-16 | Impeller high-precision static performance simulation device, testing machine and impeller performance simulation testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610902579.XA CN107957326A (en) | 2016-10-17 | 2016-10-17 | A kind of testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107957326A true CN107957326A (en) | 2018-04-24 |
Family
ID=61954104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610902579.XA Pending CN107957326A (en) | 2016-10-17 | 2016-10-17 | A kind of testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107957326A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201408112Y (en) * | 2009-05-25 | 2010-02-17 | 上海同韵环保能源科技有限公司 | Loading test device for fan blade of wind generating set |
| CN102414399A (en) * | 2009-05-12 | 2012-04-11 | 三菱重工业株式会社 | Method and apparatus for simulation test of centrifugal stress of turbine blade |
| CN102954887A (en) * | 2012-11-08 | 2013-03-06 | 中国航空工业集团公司沈阳发动机设计研究所 | Testing device for measuring damping effect of working blades of high-pressure turbine |
| CN104062104A (en) * | 2013-03-19 | 2014-09-24 | 徐可君 | Cyclic test device for fatigue of aeroengine compressor blade |
| CN105628371A (en) * | 2016-03-22 | 2016-06-01 | 燕山大学 | Blade fatigue performance tester |
-
2016
- 2016-10-17 CN CN201610902579.XA patent/CN107957326A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102414399A (en) * | 2009-05-12 | 2012-04-11 | 三菱重工业株式会社 | Method and apparatus for simulation test of centrifugal stress of turbine blade |
| CN201408112Y (en) * | 2009-05-25 | 2010-02-17 | 上海同韵环保能源科技有限公司 | Loading test device for fan blade of wind generating set |
| CN102954887A (en) * | 2012-11-08 | 2013-03-06 | 中国航空工业集团公司沈阳发动机设计研究所 | Testing device for measuring damping effect of working blades of high-pressure turbine |
| CN104062104A (en) * | 2013-03-19 | 2014-09-24 | 徐可君 | Cyclic test device for fatigue of aeroengine compressor blade |
| CN105628371A (en) * | 2016-03-22 | 2016-06-01 | 燕山大学 | Blade fatigue performance tester |
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Application publication date: 20180424 |