CN104749031B - Measurement jig and measurement method for rotary blade - Google Patents
Measurement jig and measurement method for rotary blade Download PDFInfo
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- CN104749031B CN104749031B CN201510175322.4A CN201510175322A CN104749031B CN 104749031 B CN104749031 B CN 104749031B CN 201510175322 A CN201510175322 A CN 201510175322A CN 104749031 B CN104749031 B CN 104749031B
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Abstract
The invention provides a measurement jig for a rotary blade. The measurement jig for the rotary blade comprises a blade clamping device, a pressure measurement device and a tension measurement device, wherein the blade clamping device comprises a blade tenon clamping block, a spring and a frame body; the slantwise side surface of the blade tenon clamping block contacts with the blade tenon of the rotary blade to be measured, the pressure measurement device comprises a pressure sensor and a pressure application device, and the pressure sensor is arranged between the blade tenon and the pressure application device; the spring is connected with the tension measurement device, the tension measurement device comprises a tension sensor and a tension application device, wherein the tension sensor is arranged between the tension application device and the spring; the pressure application device and the tension application device are arranged on the frame body respectively. With the adoption of the device and the method provided by the invention, researches for the vibration condition of the blade to be measured under different tension actions on the blade and different clamping forces on the blade tenon are realized.
Description
Technical field
The invention belongs to mechanical test field, and in particular to a kind of rotating vane measured material and measuring method.
Background technology
Rotating machinery is all widely used in modern Aviation, navigation and energy field, master of the blade as rotating machinery
One of parts are wanted, directly medium is done work at work, played a part of to change energy, thus be described as rotating machinery
" heart ".Blade during high speed rotational operation, as the quality of blade itself causes to produce powerful centrifugal force load, plus
Blade rotary course in inevitably have the alternate load of vibration, make blade produce fatigue under certain conditions and split
Stricture of vagina.Under the interaction of centrifugal force and vibration, crackle continues to expand, and bears centrifugal force until remaining load insufficient area and makes
Into stress when, blade will fracture, and the fragment for fractureing may fly out outside casing, or rest blade of injuring, and cause major accident.Cause
This, during blade is manufactured and designed, it is necessary to which the static strength, fatigue resistance and safety to blade is checked, to blade
Vibration parameterses are measured, and study some characteristics in its vibration processes, especially high speed rotational blade fatigue resistance is examined
The measurement of core, dynamicss parameter and its centrifugal tension produced in high-speed rotation, for raising design level, really
The operation steady in a long-term of guarantor's equipment, raising maintenance efficiency are significant.
At present, as most of rotating machinery internal structures are complicated, and running Leaf is in high speed rotation status,
Existing technological means are it is also difficult to achieve directly to the examination of rotating vane fatigue resistance and the measurement of centrifugal tension, only by theory
The method of calculating and numerical analysis carries out the safety of this respect and checks.In order to further appreciate that the kinetics of rotating vane
Characteristic and mechanism, explore the rule that blade is damaged destruction, urgently need to carry out rotating vane fatigue resistance examination and centrifugation is drawn
Power is measured, for improving manufacturing and designing for blade, it is to avoid the generation of security incident.
The content of the invention
The technical problem to be solved in the present invention is：A kind of rotating vane measured material and measuring method are provided, can be realized
To rotating vane to be measured is under different pulling force effects and leaf tenon is subject to different clamping force effect lower blade Vibration Conditions to study.
The present invention for the solution technical scheme taken of above-mentioned technical problem is：A kind of rotating vane measured material, which is special
Levy and be：It includes blade clamping device, pressure gauge and tension measuring device, and its Leaf clamping device includes leaf tenon
Gripping block and the spring and support body of vane tip connection；
Leaf tenon gripping block inclined side is touched with the leaf joggle of rotating vane to be measured, and the two angle of inclination is equal, pressure measxurement
Device includes pressure transducer and pressure applying means, and wherein pressure transducer is arranged between leaf tenon and pressure applying means；
Spring is connected with described tension measuring device, and tension measuring device includes that pulling force sensor and pulling force apply dress
Put, wherein pulling force sensor is arranged between tension application device and spring；
Pressure applying means and tension application device are separately positioned on support body.
By such scheme, it also includes the vibrating sensor being arranged on blade.
By such scheme, described support body includes base plate, crossbeam, side plate and the support for connecting bottom board and crossbeam
Plate, wherein described pressure applying means are arranged on base plate, described tension application device is arranged on crossbeam, and side plate is arranged
In described pressure gauge both sides.
By such scheme, the push rod of described pressure transducer withstands leaf tenon bottom by one piece of leaf tenon pad, and pressure is applied
Feeder apparatus is withstood pressure by one piece of pressure transducer pad the bottom of sensor.
A kind of measuring method realized using above-mentioned rotating vane measured material, it is characterised in that：It comprises the following steps：
Apply different clamping forces to leaf tenon using pressure applying means, clamping force size, mould are measured by pressure transducer
As the effect of rotating vane centrifugal tension to be measured makes the clamping force of leaf tenon generation in plan high-speed rotation；In simulation process,
The one side that rotating vane to be measured is not provided with vibrating sensor is tapped, the frequency of vibration of rotating vane to be measured is measured, leaf tenon is investigated
The vibration characteristics of rotating vane to be measured under the effect of different clamping forces；
Different pulling force are applied to rotating vane to be measured by tension application device, it is big by pulling force sensor measurement pulling force
It is little, simulate the centrifugal tension to rotating vane to be measured；In simulation process, tap rotating vane to be measured and be not provided with vibrating sensor
One side, measure the frequency of vibration of rotating vane to be measured under different pulling force effects, study the pass between frequency of vibration and pulling force
System.
Beneficial effects of the present invention are：
1st, by using apparatus of the present invention and method, realizing in high-speed rotation due to the work of blade centrifugal tension
With the simulation for making leaf tenon produce different clamping forces, and the simulation to rotating vane centrifugal tension to be measured, it is achieved thereby that treating
Rotating vane is surveyed under different pulling force effects and leaf tenon is acted on lower blade Vibration Condition by different clamping forces and studied.
2nd, leaf tenon gripping block can be dismounting, can install different leaf tenon gripping blocks according to different leaf tenons, pass through
One fixture is capable of achieving the purpose measured to multiple measurement objects.
Description of the drawings
Structural representations of the Fig. 1 for one embodiment of the invention
Top views of the Fig. 2 for Fig. 1
AA profiles of the Fig. 3 for Fig. 2
Structure three-dimensional figures of the Fig. 4 for one embodiment of the invention
In figure：1- base plates, 2- side plates, 3- leaf tenon gripping blocks, 5- blades, 6- leaf tenon cushion blocks, 7- pressure transducers, 8- pressure
Sensor cushion block, 9- threaded mandrels, 10- gripper shoes, 11- crossbeams, 12 pulling force sensors, 13- adjusting nuts, 14- springs, 16-
Baffle plate.
Specific embodiment
With reference to instantiation and accompanying drawing, the present invention will be further described.
As shown in Figures 1 to 4, a kind of rotating vane measured material, including blade clamping device, pressure gauge and drawing
Force measuring device, its Leaf clamping device include leaf tenon gripping block 3, and blade 5 at the top of connect spring 14, and support body；
3 inclined side of leaf tenon gripping block is touched with the leaf joggle of rotating vane to be measured, and the two angle of inclination is equal, and pressure gauge includes
Pressure transducer 7 and pressure applying means, wherein pressure transducer 7 are arranged between leaf tenon and pressure applying means；Spring 14
It is connected with described tension measuring device, tension measuring device includes pulling force sensor 12 and tension application device, wherein pulling force
Sensor 12 is arranged between tension application device and spring 14；Pressure applying means and tension application device are separately positioned on frame
On body.
It also includes the vibrating sensor being arranged on blade 5, it is preferred that the vibrating sensor selects optical fiber grating sensing
Device.
Described support body include base plate 1, crossbeam 11, side plate 2, and for the gripper shoe 10 of connecting bottom board 1 and crossbeam 11,
Wherein described pressure applying means are arranged on base plate 1, and described tension application device is arranged on crossbeam 11, and side plate 2 sets
Put in described pressure gauge both sides.
The push rod of described pressure transducer 7 withstands leaf tenon bottom by one piece of leaf tenon pad 6, and pressure applying means pass through
One piece of pressure transducer pad 8 withstands pressure the bottom of sensor 7.
In order that leaf tenon gripping block 3 can preferably play clamping action, between leaf tenon gripping block 3 and gripper shoe 10
It is provided with baffle plate 16.
In the present embodiment, described pressure applying means are threaded mandrel 9；Described tension application device is to pass with pulling force
The screw rod of sensor connection, screw rod passes through crossbeam, and adjusting nut 13 is provided with the outside of crossbeam.
A kind of measuring method realized using above-mentioned rotating vane measured material, it comprises the following steps：
Apply different clamping forces to leaf tenon using pressure applying means, clamping force size, mould are measured by pressure transducer
As the effect of rotating vane centrifugal tension to be measured makes the clamping force of leaf tenon generation in plan high-speed rotation；In simulation process,
The one side that rotating vane to be measured is not provided with vibrating sensor is tapped, the frequency of vibration of rotating vane to be measured is measured, leaf tenon is investigated
The vibration characteristics of rotating vane to be measured under the effect of different clamping forces；
Different pulling force are applied to rotating vane to be measured by tension application device, it is big by pulling force sensor measurement pulling force
It is little, simulate the centrifugal tension to rotating vane to be measured；In simulation process, tap rotating vane to be measured and be not provided with vibrating sensor
One side, measure the frequency of vibration of rotating vane to be measured under different pulling force effects, study the pass between frequency of vibration and pulling force
System.
Further, in the present embodiment, each parts of support body are bolted.Two pieces of detachable leaf tenon gripping blocks are inclined
The inclination angle size of side is identical with leaf tenon side inclination angle size.Different blade and blade tenon side inclinations angle is different, Ke Yigeng
Change different leaf tenon gripping blocks.The push rod of two pressure transducers withstands leaf tenon bottom, threaded mandrel by one piece of leaf tenon pad
The bottom of two pressure transducers is withstood by one piece of pressure transducer pad.The length of threaded mandrel is adjusted, leaf tenon bottom is given
Apply pressure, inclined plane and the leaf tenon base plane of two leaf tenon gripping blocks constitute a triangle space, so as to leaf tenon is solid
Clamp is tight.Threaded mandrel 9 can be measured by pressure transducer to the pressure that leaf tenon bottom applies and be obtained, and known leaf tenon side
Inclination angle, thus can be by being calculated the stress size of two sides of leaf tenon.
Vane tip is connected with pulling force sensor by spring, and pulling force sensor is welded on pulling force sensor bottom by one
The screw rod in portion is fixed on crossbeam block, and screw rod can be adjusted by nut, and so as to apply pulling force to spring, pulling force effect is in leaf
At the top of piece, the size of pulling force is measured by pulling force sensor.The connector of vane tip is using the mode of spot welding by one piece of band
Foraminate aluminum lug is welded on vane tip, and carbine is passed through from hole, so as to realize the connection of blade and spring.
Blade produces huge centrifugal tension in high-speed rotation, centrifugal tension by two sides of leaf tenon tightly
It is pressed on two faces of tongue-and-groove.The centrifugal tension that different rotating speeds is produced also is differed, the clamping force that two sides of leaf tenon are subject to
Also differ, under different clamping force effects, its vibration characteristics is different to leaf tenon, be therefore, it can by applying to leaf tenon
Different clamping forces, studies to the vibration characteristics of blade.In addition, according to rotating vane dynamic stiffening, it is different
Centrifugal tension effect under, the rigidity of blade can change, and centrifugal tension is bigger, and rigidity is bigger, cause blade self-vibration frequency
Rate increases, and therefore, it can, by applying different pulling force to blade, by the change for measuring its natural frequency of vibration, study blade
Vibration characteristics.
The measurement process of the rotating vane measured material that the present invention is provided is divided into rotating vane under different pulling force effects
And leaf tenon is acted on lower blade Vibration Condition by different clamping forces and is studied.Leaf tenon pressure measxurement, blade tension measurement, blade
Frequency of vibration is measured, and different purposes are realized in different measurements.A kind of purpose：Optical fiber grating sensing is pasted on one face of blade
After device, on blade fixture, by adjusting threaded mandrel, apply different pressure to leaf tenon, tap blade and do not paste
The one side of fiber-optic grating sensor, measures vibration frequency of blade, investigates leaf tenon special in the vibration that different clamping forces act on lower blade
Property.A kind of purpose：Fiber-optic grating sensor is pasted on one face of blade, in vane tip spot welding aluminum slice lug, then
On the fixture that blade is installed, it is determined that leaf tenon pressure condition under, apply different pulling force to blade, tap blade and do not paste
The one side of fiber-optic grating sensor, measures the frequency of vibration of blade, investigates frequency of vibration of the blade under different pulling force effects, grinds
Study carefully the relation between frequency of vibration and pulling force.
Claims (5)
1. a kind of rotating vane measured material, it is characterised in that：It includes that blade clamping device, pressure gauge and pulling force are surveyed
Amount device, its Leaf clamping device include the spring and support body of leaf tenon gripping block and vane tip connection；
Leaf tenon gripping block inclined side is touched with the leaf joggle of rotating vane to be measured, and the two angle of inclination is equal, pressure gauge
Including pressure transducer and pressure applying means, wherein pressure transducer is arranged between leaf tenon and pressure applying means；
Spring is connected with described tension measuring device, and tension measuring device includes pulling force sensor and tension application device, its
Middle pulling force sensor is arranged between tension application device and spring；
Pressure applying means and tension application device are separately positioned on support body.
2. rotating vane measured material according to claim 1, it is characterised in that：It also includes being arranged on shaking on blade
Dynamic sensor.
3. rotating vane measured material according to claim 1 and 2, it is characterised in that：Described support body includes base plate, horizontal stroke
Beam, side plate and for connecting bottom board and the gripper shoe of crossbeam, wherein described pressure applying means are arranged on base plate, institute
The tension application device stated is arranged on crossbeam, and side plate is arranged on described pressure gauge both sides.
4. rotating vane measured material according to claim 1 and 2, it is characterised in that：The top of described pressure transducer
Bar withstands leaf tenon bottom by one piece of leaf tenon pad, and pressure applying means are withstood pressure sensing by one piece of pressure transducer pad
The bottom of device.
5. the measuring method that the rotating vane measured material described in a kind of utilization claim 2 is realized, it is characterised in that：It includes
Following steps：
Apply different clamping forces to leaf tenon using pressure applying means, clamping force size is measured by pressure transducer, simulation is high
As the effect of rotating vane centrifugal tension to be measured makes the clamping force of leaf tenon generation in fast rotary course；In simulation process, tap
Rotating vane to be measured is not provided with the one side of vibrating sensor, measures the frequency of vibration of rotating vane to be measured, investigates leaf tenon not
With the vibration characteristics of rotating vane to be measured under clamping force effect；
Different pulling force are applied to rotating vane to be measured by tension application device, pulling force size, mould are measured by pulling force sensor
Intend the centrifugal tension to rotating vane to be measured；In simulation process, tap rotating vane to be measured and be not provided with the one of vibrating sensor
Face, measures frequency of vibration of the rotating vane to be measured under different pulling force effects, studies the relation between frequency of vibration and pulling force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175322.4A CN104749031B (en) | 2015-04-13 | 2015-04-13 | Measurement jig and measurement method for rotary blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510175322.4A CN104749031B (en) | 2015-04-13 | 2015-04-13 | Measurement jig and measurement method for rotary blade |
Publications (2)
| Publication Number | Publication Date |
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| CN104749031A CN104749031A (en) | 2015-07-01 |
| CN104749031B true CN104749031B (en) | 2017-05-17 |
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| CN201510175322.4A Expired - Fee Related CN104749031B (en) | 2015-04-13 | 2015-04-13 | Measurement jig and measurement method for rotary blade |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571802B (en) * | 2016-02-01 | 2018-01-16 | 苏州长菱测试技术有限公司 | The method of testing of blade pretightning force |
| CN106226015A (en) * | 2016-07-01 | 2016-12-14 | 西北工业大学 | A kind of assay device of turbine disk coupled vibrations |
| CN109029808A (en) * | 2018-07-05 | 2018-12-18 | 陈俊胤 | A kind of airborne propeller dynamic tension measuring device |
| DE102019200378A1 (en) * | 2019-01-15 | 2020-07-16 | Robert Bosch Gmbh | Pressure detection device for a measuring device for measuring a pressure condition value of a plant sample and method for producing a pressure detection device |
| CN110196190B (en) * | 2019-05-20 | 2022-03-08 | 芜湖市爱德运输机械有限公司 | Method for testing compressive strength of helical blade |
| CN111654993B (en) * | 2020-05-22 | 2021-11-05 | 中国航空工业集团公司西安航空计算技术研究所 | Module equal-mass variable-rigidity method and module equal-mass variable-rigidity module |
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