CN106353076A - Tester for determining dynamic characteristic coefficient of squeeze film damper - Google Patents
Tester for determining dynamic characteristic coefficient of squeeze film damper Download PDFInfo
- Publication number
- CN106353076A CN106353076A CN201610693543.5A CN201610693543A CN106353076A CN 106353076 A CN106353076 A CN 106353076A CN 201610693543 A CN201610693543 A CN 201610693543A CN 106353076 A CN106353076 A CN 106353076A
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- China
- Prior art keywords
- squeeze film
- film damper
- dynamic characteristic
- axle journal
- test device
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Classifications
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The tester for determining the dynamic characteristic coefficient of a squeeze film damper in the invention belongs to a test apparatus in the field of rotor vibration passive control, in particular to a test apparatus for determining the dynamic characteristic coefficient of a squeeze film damper. The shaft neck is vertically enclosed in the interior of the damper housing; a seal ring is provided between the shaft neck and the damper housing; the damper housing is connected with a lubricating tube through screws; the lower end of the support rod is fixed with the shaft neck, and the upper end of the support road is mounted on the testing platform via a hinge shaft; a force sensor and an acceleration sensor are mounted on the shaft neck; the vibration rode of the vibration exciter is connected with the force sensor; the vibration exciter and the signal generator are connected with the data collector in series; a displacement sensor is provided on the damper housing; the force sensor, the acceleration sensor and the displacement sensor are connected with a vibration sensor signal amplifier box which is connected with a data acquisition unit; the data acquisition unit is connected with an industrial control computer. An elastic support, which is connected with the testing platform, is provided in the middle of the support rod.
Description
Technical field
Squeeze film damper dynamic characteristic coefficients determination test device of the present invention, belongs to rotor oscillation and passively controls
The test tool in field is and in particular to a kind of assay device measuring for squeeze film damper dynamic characteristic coefficients.
Background technology
The Main Function of squeeze film damper is to reduce rotor to pass through resonance amplitude during critical speed and supporting unofficial biography
Power.If squeeze film damper design is good, effectiveness in vibration suppression clearly, typically can reduce vibration more than 60%, and energy
Suppression rotor-support-foundation system dynamic instability bears the ability of sudden unbalance load with improving rotor.However, test proves extruding
Film damper design unreasonable or trochiterian living load can be increased away from design point work, rotor is likely to occur low frequency
The nonlinear dynamic phenomenon such as vibration and amplitude kick, has a strong impact on the stable operation of electromotor.
Because the effectiveness in vibration suppression of squeeze film damper is the result of many factors comprehensive function, present lot of domestic and international is ground
Study carefully mechanism and researcher all attempts from the theoretical dynamicss with the angle analysis squeeze film damper of experiment, and then design
The structure of squeeze film damper.
The experiment of squeeze film damper dynamic trait can be chosen offer for the design parameter optimization of squeeze film damper and refer to
The property led foundation, therefore develops special squeeze film damper dynamic characteristic coefficients identification experimental provision for research band extruding oil
The Dynamic Prediction of film antivibrator shafting, fault diagnosis etc. are significant, simultaneously to the design of squeeze film damper, system
Make, O＆M has certain directive function.
All there is complex structure, at present using inconvenience, function list in the special experimental provision of squeeze film damper and method
One the problems such as.
For the problem in the presence of above-mentioned prior art, a kind of new squeeze film damper power of research design is special
Property coefficient determination test device, thus the problem in the presence of overcoming prior art is very necessary.
Content of the invention
In view of the problem in the presence of above-mentioned prior art, the purpose of the present invention is a kind of new extruding oil of research design
Film antivibrator dynamic characteristic coefficients determination test device.Lack for squeeze film damper dynamic analysis experimental provision, and existing
With the presence of experimental provision in the aspect some problems such as structure, function, practicality, squeeze film damper dynamic characteristic coefficients are proposed
Determination experiment device.
The technical solution of the present invention is achieved in that
Squeeze film damper dynamic characteristic coefficients determination test device of the present invention is it is characterised in that described extruding
Film damper dynamic characteristic coefficients determination test device includes support bar, force transducer, its shell, axle journal, acceleration biography
Sensor, displacement transducer, vibrator, signal generator, industrial computer, data acquisition unit and vibration sensor signal amplifier housing case；
Axle journal of the present invention is vertically sleeved on the inside of its shell；Equipped with close between axle journal and its shell
Seal, forms the seal oil chamber of a closing；Its shell is threadably secured with lubricating oil pipe and is connected；Lubricating oil pipe with close
Oil sealing chamber is connected, the fuel feeding into seal oil chamber；
The lower end of support bar of the present invention is fixedly connected with the top of axle journal；Hinged bearing is passed through on the top of support bar
It is loaded in laboratory table；
Equipped with force transducer and acceleration transducer on the axle journal that the present invention states；
Vibrator of the present invention is fixed in laboratory table by exciter support；The exciting rod of vibrator is sensed with power
Device is fixedly connected；
Vibrator of the present invention, signal generator and data acquisition unit are in series by signal-transmitting cable；
Equipped with displacement transducer on its shell of the present invention；
Force transducer of the present invention, acceleration transducer and displacement transducer are passed through signal-transmitting cable and are passed with vibration
Sensor signal amplifier housing case is connected；
Vibration sensor signal amplifier housing case of the present invention is connected by signal-transmitting cable with data acquisition unit；
Described data acquisition unit is connected with industrial computer by signal-transmitting cable.
The middle part of support bar of the present invention is connected with laboratory table equipped with resilient support, resilient support.
Bottom in axle journal of the present invention is placed with oil trap.
Support bar of the present invention is made using 45# steel.
The external diameter of support bar of the present invention is less than the 10% of axle journal external diameter.
The length of support bar of the present invention and axle journal is than between 3-3.5:1.
Signal generator of the present invention has the output of two-way voltage signal, and two-way voltage output relative phase can be any
Setting.
Its shell of the present invention is the integral barrel structure of inner wall smooth, using the lucite of good transmittance
It is processed into.
The principle of the present invention and function are:
The principle of the invention is that axle journal 8 is vertically placed in film damper 6 by support bar 1, and is adjusted by support spring 3
Bearing neck 8 and the centering of antivibrator 6.It is respectively mounted vibrator 12 in two vertical direction of horizontal plane, vibrator 12 is sent out by signal
Raw device 13 controls, and ensures that both direction amplitude of exciting force is consistent with frequency, 90 degree of phase is so that axle journal 8 produces during experiment
Circular trace eddy motion.Arrange force transducer 4 between vibrator 12 and axle journal 8, suffered by real-time capture axle journal during exciting force
Domain signal, and at axle journal 8, displacement transducer 10 and acceleration transducer 9 are installed, catch axle journal in electromagnetic excitation power, elasticity
Support force, inertia force and antivibrator damping force effect bottom offset and acceleration time domain signal.It is then based on the knowledge of dynamic response track
Other method obtains oil film rigidity and the oil-film damping coefficient describing squeeze film dampened power characteristic.
It is an advantage of the invention that it will be apparent that being mainly manifested in:
1st, the use of the present invention, solves the knot existing for the special experimental provision of existing squeeze film damper and method
Structure is complicated, the problems such as using inconvenience, single function；
2nd, the present invention can carry out squeeze film damper dynamic characteristic coefficients identification, squeeze film damper structural parameters pair
Dynamic characteristic coefficients affect, and oil film pressure distribution characteristic, sealing structure, on experiments such as antivibrator dynamic characteristic impacts, belong to collection multiple
Experiential function and the novel experiment device of the whole body.
The present invention has that structure is novel, mechanism is simple, simple processing, easy to use, multiple functional, data are accurately etc. excellent
Point, it in high volume puts goods on the market and will produce positive social benefit and significant economic benefit.
Brief description
The present invention has 1 width accompanying drawing, wherein:
Accompanying drawing 1 present configuration schematic diagram.
In in figure: 1, support bar 2, hinged bearing 3, resilient support 4, force transducer 5, lubricating oil pipe 6, antivibrator
Shell 7, sealing ring 8, axle journal 9, acceleration transducer 10, displacement transducer 11, exciter support 12 vibrator 13,
Signal generator 14, signal-transmitting cable 15, industrial computer 16, data acquisition unit 17, vibration sensor signal amplifier housing case
18th, oil trap.
Specific embodiment
As shown in drawings, squeeze film damper dynamic characteristic coefficients determination test device includes the specific embodiment of the present invention
Support bar 1, force transducer 4, its shell 6, axle journal 8, acceleration transducer 9, displacement transducer 10, vibrator 12, signal
Generator 13, industrial computer 15, data acquisition unit 16 and vibration sensor signal amplifier housing case 17；
Axle journal 8 is vertically sleeved on the inside of its shell 6；Equipped with sealing ring 7, shape between axle journal 8 and its shell 6
Become the seal oil chamber of a closing；Its shell 6 is threadably secured with lubricating oil pipe 5 and is connected；Lubricating oil pipe 5 and Seal Oil
Chamber is connected, the fuel feeding into seal oil chamber；
The lower end of support bar 1 is fixedly connected with the top of axle journal 8；The top of support bar 1 is loaded on experiment by hinged bearing 2
On platform；
Equipped with force transducer 4 and acceleration transducer 9 on axle journal 8；
Vibrator 12 is fixed in laboratory table by exciter support 11；The exciting rod of vibrator 12 is solid with force transducer 4
Fixed connection；
Vibrator 12, signal generator 13 are in series by signal-transmitting cable 14 with data acquisition unit 16；
Equipped with displacement transducer 10 on its shell 6；
Force transducer 4, acceleration transducer 9 and displacement transducer 10 pass through signal-transmitting cable 14 and vibrating sensor letter
Number amplifier housing case 17 is connected；
Vibration sensor signal amplifier housing case 17 is connected by signal-transmitting cable 14 with data acquisition unit 16；
Data acquisition unit 16 is connected with industrial computer 15 by signal-transmitting cable 14.
The middle part of support bar 1 is connected with laboratory table equipped with resilient support 3, resilient support 3.
The bottom of axle journal 8 is placed with oil trap 18.
Support bar 1 is made using 45# steel.
The external diameter of support bar 1 is less than the 10% of axle journal 8 external diameter.
The length of support bar 1 and axle journal 8 is than between 3-3.5:1.
Signal generator 13 has the output of two-way voltage signal, and two-way voltage output relative phase can arbitrarily be arranged.
Its shell 6 is the integral barrel structure of inner wall smooth, and the lucite using good transmittance is processed into.
The above, the only preferably specific embodiment of the present invention, but protection scope of the present invention is not limited to
This, all those familiar with the art in technical scope disclosed by the invention, technology according to the present invention scheme
And its design of the present invention in addition equivalent or change and all should be included within the scope of the present invention.
Claims (8)
1. a kind of squeeze film damper dynamic characteristic coefficients determination test device is it is characterised in that described squeeze film damper
Dynamic characteristic coefficients determination test device includes support bar (1), force transducer (4), its shell (6), axle journal (8), acceleration
Sensor (9), displacement transducer (10), vibrator (12), signal generator (13), industrial computer (15), data acquisition unit (16)
And vibration sensor signal amplifier housing case (17)；
Described axle journal (8) is vertically sleeved on the inside of its shell (6)；Between axle journal (8) and its shell (6) equipped with
Sealing ring (7), forms the seal oil chamber of a closing；Its shell (6) is threadably secured with lubricating oil pipe (5) and is connected；
Lubricating oil pipe (5) is connected with seal oil chamber, the fuel feeding into seal oil chamber；
The described lower end of support bar (1) is fixedly connected with the top of axle journal (8)；Hinged bearing is passed through on the top of support bar (1)
(2) it is loaded in laboratory table；
Equipped with force transducer (4) and acceleration transducer (9) on described axle journal (8)；
Described vibrator (12) is fixed in laboratory table by exciter support (11)；The exciting rod of vibrator (12) is passed with power
Sensor (4) is fixedly connected；
Described vibrator (12), signal generator (13) are mutually gone here and there by signal-transmitting cable (14) with data acquisition unit (16)
Connection；
Equipped with displacement transducer (10) on described its shell (6)；
Described force transducer (4), acceleration transducer (9) pass through signal-transmitting cable (14) and shake with displacement transducer (10)
Dynamic transducer signal amplifier case (17) is connected；
Described vibration sensor signal amplifier housing case (17) is connected by signal-transmitting cable (14) with data acquisition unit (16)
Connect；
Described data acquisition unit (16) is connected with industrial computer (15) by signal-transmitting cable (14).
2. squeeze film damper dynamic characteristic coefficients determination test device according to claim 1 is it is characterised in that described
Support bar (1) middle part equipped with resilient support (3), resilient support (3) be connected with laboratory table.
3. squeeze film damper dynamic characteristic coefficients determination test device according to claim 1 is it is characterised in that described
The bottom of axle journal (8) be placed with oil trap (18).
4. squeeze film damper dynamic characteristic coefficients determination test device according to claim 1 is it is characterised in that described
Support bar (1) made using 45# steel.
5. squeeze film damper dynamic characteristic coefficients determination test device according to claim 1 is it is characterised in that described
Support bar (1) external diameter be less than axle journal (8) external diameter 10%.
6. squeeze film damper dynamic characteristic coefficients determination test device according to claim 1 is it is characterised in that described
Support bar (1) and axle journal (8) length than between 3-3.5:1.
7. squeeze film damper dynamic characteristic coefficients determination test device according to claim 1 is it is characterised in that described
Signal generator (13) there is the output of two-way voltage signal, two-way voltage output relative phase can arbitrarily arrange.
8. squeeze film damper dynamic characteristic coefficients determination test device according to claim 1 is it is characterised in that described
Its shell (6) be inner wall smooth integral barrel structure, the lucite using good transmittance is processed into.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610531641 | 2016-07-07 | ||
| CN2016105316419 | 2016-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353076A true CN106353076A (en) | 2017-01-25 |
Family
ID=57844190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610693543.5A Pending CN106353076A (en) | 2016-07-07 | 2016-08-19 | Tester for determining dynamic characteristic coefficient of squeeze film damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106353076A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768986A (en) * | 2017-02-22 | 2017-05-31 | 大连海事大学 | Fluid film lubrication damping test platform |
| CN106989917A (en) * | 2017-06-01 | 2017-07-28 | 中国航发湖南动力机械研究所 | Flexibly support the dynamic stiffness measurement device and its measuring method of squeeze film damper |
| CN107036802A (en) * | 2017-06-09 | 2017-08-11 | 北京强度环境研究所 | A kind of shock absorber overloading-vibrating environment pilot system and test method |
| CN109708802A (en) * | 2019-02-22 | 2019-05-03 | 大连交通大学 | Squeeze film damper distributed pressure experimental rig and its test method |
| CN109752171A (en) * | 2018-12-17 | 2019-05-14 | 南京航空航天大学 | Measure the two-way excitation exerciser of floating ring formula squeeze film damper internal layer oil pressure |
| CN109827731A (en) * | 2019-03-25 | 2019-05-31 | 中国直升机设计研究所 | A kind of testpieces exciting device |
| CN111624431A (en) * | 2020-06-24 | 2020-09-04 | 西安交通大学 | GIS solid insulation multi-sample three-factor aging test device and test method |
| CN112729811A (en) * | 2021-01-13 | 2021-04-30 | 西安热工研究院有限公司 | Organic working medium sealing leakage and dynamic characteristic testing device |
| CN113931969A (en) * | 2021-11-04 | 2022-01-14 | 清华大学 | Active electromagnetic damper |
| CN113984365A (en) * | 2021-11-02 | 2022-01-28 | 哈尔滨工业大学 | Novel measurement device for dynamic coefficient of squeeze film damper |
| CN114813125A (en) * | 2022-03-31 | 2022-07-29 | 大连海事大学 | Fatigue life examination test platform for squirrel-cage bearing sleeve of aero-engine |
| CN116840195A (en) * | 2023-05-18 | 2023-10-03 | 中国船舶集团有限公司第七〇三研究所 | Dynamic transmittance test device for sealing ring of extrusion oil film damper based on machine vision |
| CN117346990A (en) * | 2023-09-19 | 2024-01-05 | 武汉理工大学 | Device and method for measuring vibration characteristics of rotary propulsion shaft |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768986A (en) * | 2017-02-22 | 2017-05-31 | 大连海事大学 | Fluid film lubrication damping test platform |
| CN106989917A (en) * | 2017-06-01 | 2017-07-28 | 中国航发湖南动力机械研究所 | Flexibly support the dynamic stiffness measurement device and its measuring method of squeeze film damper |
| CN107036802A (en) * | 2017-06-09 | 2017-08-11 | 北京强度环境研究所 | A kind of shock absorber overloading-vibrating environment pilot system and test method |
| CN109752171A (en) * | 2018-12-17 | 2019-05-14 | 南京航空航天大学 | Measure the two-way excitation exerciser of floating ring formula squeeze film damper internal layer oil pressure |
| CN109708802B (en) * | 2019-02-22 | 2020-06-30 | 大连交通大学 | Distributed pressure test device and test method for squeeze film damper |
| CN109708802A (en) * | 2019-02-22 | 2019-05-03 | 大连交通大学 | Squeeze film damper distributed pressure experimental rig and its test method |
| CN109827731B (en) * | 2019-03-25 | 2020-11-03 | 中国直升机设计研究所 | Test piece vibration excitation device |
| CN109827731A (en) * | 2019-03-25 | 2019-05-31 | 中国直升机设计研究所 | A kind of testpieces exciting device |
| CN111624431A (en) * | 2020-06-24 | 2020-09-04 | 西安交通大学 | GIS solid insulation multi-sample three-factor aging test device and test method |
| CN111624431B (en) * | 2020-06-24 | 2021-11-23 | 西安交通大学 | GIS solid insulation multi-sample three-factor aging test device and test method |
| CN112729811A (en) * | 2021-01-13 | 2021-04-30 | 西安热工研究院有限公司 | Organic working medium sealing leakage and dynamic characteristic testing device |
| CN113984365A (en) * | 2021-11-02 | 2022-01-28 | 哈尔滨工业大学 | Novel measurement device for dynamic coefficient of squeeze film damper |
| CN113931969A (en) * | 2021-11-04 | 2022-01-14 | 清华大学 | Active electromagnetic damper |
| CN114813125A (en) * | 2022-03-31 | 2022-07-29 | 大连海事大学 | Fatigue life examination test platform for squirrel-cage bearing sleeve of aero-engine |
| CN116840195A (en) * | 2023-05-18 | 2023-10-03 | 中国船舶集团有限公司第七〇三研究所 | Dynamic transmittance test device for sealing ring of extrusion oil film damper based on machine vision |
| CN117346990A (en) * | 2023-09-19 | 2024-01-05 | 武汉理工大学 | Device and method for measuring vibration characteristics of rotary propulsion shaft |
| CN117346990B (en) * | 2023-09-19 | 2024-06-11 | 武汉理工大学 | Device and method for measuring vibration characteristics of rotary propulsion shaft |
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Application publication date: 20170125 |