CN108387331A - A kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor - Google Patents
A kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor Download PDFInfo
- Publication number
- CN108387331A CN108387331A CN201810099011.8A CN201810099011A CN108387331A CN 108387331 A CN108387331 A CN 108387331A CN 201810099011 A CN201810099011 A CN 201810099011A CN 108387331 A CN108387331 A CN 108387331A
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- rotor
- pull rod
- slip ring
- real
- conducting slip
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- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000010998 test method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 239000011888 foil Substances 0.000 claims abstract description 3
- 208000037656 Respiratory Sounds Diseases 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract 1
- 239000007769 metal material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of test methods of the real-time dynamic stress of disc type pull rod composite class rotor, it utilizes conducting slip ring, resistivity foil gauge, data collecting system is to disc type pull rod composite class rotor-support-foundation system actual working state lower rotor part, pull rod, wheel disc carries out real-time ambulatory stress test, by the way that stress concentration easily occurs in disc type pull rod combined rotor system, or the equal key positions of fatigue fracture set adhering resistance strain sheets, conducting slip ring is installed close to position of bearings on rotor shaft, strain signal caused by resistance strain gage is transmitted to data collecting system by conducting slip ring, to realize real-time monitoring and early warning to the key position ess-strain of such rotary machine rotor system.The present invention is suitable for the test of the real-time stress of composite class rotor-support-foundation system of rotating machinery stress test field, especially enclosed construction.
Description
Technical field
The invention belongs to rotating machinery technical field of measurement and test, the more particularly to a kind of real-time dynamic of disc type pull rod composite class rotor
The test method of stress.
Background technology
Rotor-support-foundation system is the core drive unit of dynamic power machine in rotatory mechanical system, often in high speed, heavy duty work shape
State, actual loading situation is complicated and changeable, and the performance of power section key structure rotor directly affects the service life of rotor, and for this
The real-time monitoring of the ess-strain of disc-like type pull rod composite class rotor-support-foundation system is mostly based on static test, for rotary machine rotor
The real-time testing of structure ess-strain under real work under rotational case is not well solved, and open type combination is turned
Minor structure, it is a kind of effective method to carry out stress test using wireless test scheme, and for the combination of structure encapsulated type
Rotor structure, and mostly metal material, when needing to test the dynamic stress on inner components surfaces, wireless test signal can be because
The screen effect of metal material and be difficult to the ess-strain under the actual working state of reaction part.
Invention content
The purpose of the present invention is to provide a kind of test methods of the real-time dynamic stress of disc type pull rod composite class rotor, with solution
The certainly above problem.
To achieve the above object, the present invention uses following technical scheme：
A kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor, the disc type pull rod composite class rotor packet
Include rotor, pull rod, left disk, mid-game and right disk；The one side center of left disk is vertically installed with rotor, and the one side center of right disk is vertically set
It is equipped with rotor, left disk and right disk are not provided with being oppositely arranged on one side for rotor, and mid-game is arranged between left disk and right disk, and left
Disk, mid-game and right disk are arranged concentrically；Tie rod hole is both provided on left disk, mid-game and right disk, pull rod sequentially passes through tie rod hole by three
A disk connection；
The test method of the real-time dynamic stress of disc type pull rod composite class rotor, includes the following steps：
Step 1：Determine that surface fatigue crackle, the position of stress concentration and stickup easily occur for combination disc-type rod fastening rotor system
Resistance strain gage；
Step 2：Conducting slip ring is installed in the end of rotor；
Step 3：Resistance strain gage lead is connected to the output line terminal of conductive sliding ring rotor；
Step 4：Data collecting system information collection end is connected with conducting slip ring stator output line terminal；
Step 5：State calibration and debugging are carried out to resistance strain gage；
Step 6：Turn-on data acquisition system and conducting slip ring power supply；
Step 7：Starting rotor-support-foundation system makes its rotation, external power supply be that resistance strain gage and data acquire by conducting slip ring
System power supply, while resistance strain gage is in real time transmitted the surface stress information for collecting corresponding measuring point position by conducting slip ring
Data information acquisition system, data information acquisition system is given to be connected to PC industrial personal computers, data information acquisition system passes through PC industry controls
Machine monitors corresponding test site stress variation situation in real time.
Further, conducting slip ring includes conductive sliding ring rotor and conducting slip ring stator；Conductive sliding ring rotor fixation is arranged
On rotor, conducting slip ring stator, and fixed conducting slip ring stator are arranged on the outside of conductive electric slip ring rotor.
Further, the end set of pull rod has pull-rod nut.
Further, the both ends of rotor are both provided with spring bearing, and spring bearing is set in the end of rotor.
Further, annular convex platform contact surface is provided between left disk and mid-game and mid-game and right disk.
Further, air line distance of the center position of conducting slip ring apart from spring bearing end face center point is 0.03cm
To 2cm.
Compared with prior art, the present invention has following technique effect：
The present invention metal material rotor-support-foundation system internal cavities with closed structure can be needed position to be tested into
Dynamic stress long term monitoring under row working condition；The part of fatigue crack disc type pull rod combined rotor system can easily be occurred
Surface location carries out real-time ambulatory stress test and monitoring；Overcome in wireless dynamic stress and strain testing scheme because of closed cavity
Signal caused by structure transmits the inexactness for encountering shielding or being brought by signal strength reduction；It also overcomes simultaneously opposite
It needs to provide battery in wireless its ess-strain of stress-strain test method acquisition sensor, battery is not easy to install, and capacity has
Limit, battery structure feature itself have a certain impact to rotor dynamic behavior, it is difficult to realize the long-term prison under actual working state
The problem of survey.
The conducting slip ring apparatus structure of the present invention is simple, is easily installed, and can solve very well for rotatable parts because of sensing
The arrangement of device and the case where generate coiling and can not test：It can accordingly be advised according to the structure of practical combinations rotor, flexible configuration
The conducting slip ring of lattice or even the conducting slip ring structure of Miniature precision.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Wherein：1, bearing support；2, rotor；3, pull rod；41, left disk；42, mid-game；43, right disk；5, resistance strain gage draws
Line；6, resistance strain gage；7, data collecting system；8, conducting slip ring stator output line；9, conducting slip ring stator；10, conductive sliding
Rotor；11, conductive sliding ring rotor output line；12, PC industrial personal computers；13, pull-rod nut.
Specific implementation mode
Below in conjunction with attached drawing, the present invention is further described：
Referring to Fig. 1,
A kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor, the disc type pull rod composite class rotor packet
Include rotor 2, pull rod 3, left disk 41, mid-game 42 and right disk 43；The one side center of left disk 41 is vertically installed with rotor 2, right disk 43
Center is vertically installed with rotor 2 on one side, and left disk 41 and right disk 43 are not provided with being oppositely arranged on one side for rotor 2, and mid-game 42 is arranged
Between left disk 41 and right disk 43, and left disk 41, mid-game 42 and right disk 43 are arranged concentrically；On left disk 41, mid-game 42 and right disk 43
It is both provided with tie rod hole, pull rod 3 sequentially passes through tie rod hole and connects three disks；
The test method of the real-time dynamic stress of disc type pull rod composite class rotor, includes the following steps：
Step 1：Determine that surface fatigue crackle, the position of stress concentration and stickup easily occur for combination disc-type rod fastening rotor system
Resistance strain gage 6；
Step 2：Conducting slip ring is installed in the end of rotor 2；
Step 3：Resistance strain gage lead 5 is connected to the output line terminal 11 of conductive sliding ring rotor；
Step 4：7 information collection end of data collecting system is connected with conducting slip ring stator output line terminal 8；
Step 5：State calibration and debugging are carried out to resistance strain gage 6；
Step 6：Turn-on data acquisition system and conducting slip ring power supply；
Step 7：Starting rotor-support-foundation system makes its rotation, external power supply be that resistance strain gage 6 and data are adopted by conducting slip ring
Collecting system 7 is powered, while the surface stress information for collecting corresponding measuring point position is passed through conducting slip ring by resistance strain gage 6 in real time
Data information acquisition system 7 is passed to, data information acquisition system 7 is connected to PC industrial personal computers 12, and data information acquisition system 7 is logical
It crosses PC industrial personal computers 12 and monitors corresponding test site stress variation situation in real time.
Conducting slip ring includes conductive sliding ring rotor 10 and conducting slip ring stator 9；The fixation of conductive sliding ring rotor 10, which is set in, to be turned
On son 2,10 outside of conductive electric slip ring rotor is arranged conducting slip ring stator 9, and fixed conducting slip ring stator 9.
The end set of pull rod 3 has pull-rod nut 13.
The both ends of rotor 2 are both provided with spring bearing 1, and spring bearing 1 is set in the end of rotor 2.
Annular convex platform contact surface is provided between left disk 41 and mid-game 42 and mid-game 42 and right disk 43.
Air line distance of the center position of conducting slip ring apart from 1 end face center point of spring bearing is 0.03cm to 2cm.
According to actually required position to be tested, the position as pasted resistance strain gage 6 in Fig. 1, generally surface stress
The position for being either also easy to produce fatigue crack or peeling is concentrated to carry out the arrangement of resistance strain gage 6, it is ensured that test position cleans, nothing
Greasy dirt, the impurity coating such as no rusty stain and are arranged by foil gauge at 45 ° or 135 ° intersect and bond and point position with axis
Temperature-compensating plate；
Conducting slip ring, the specific center point for making conducting slip ring 10 are installed close to bearing support position in combined rotor axis
It sets apart from 1 end face center position of bearing support in 0.03cm between 2cm, to reduce conducting slip ring 10 itself to combined rotor system
The influence for power performance of uniting so that the ess-strain information of acquired point position is close with greatest practical extent.Fixation is led
9 part of electric slip ring stator.
Resistance strain gage lead 5 is connected to the rotor output line terminal 11 of conducting slip ring, by 7 signal wire of data collecting system
It is connected with the stator output line 8 of conducting slip ring.
State calibration is being carried out to resistance strain gage 6, after the completion of debugging, is starting the confession of conducting ring and data collecting system 7
Power supply, then so that rotor rotation, is that resistance strain gage 6 provides power supply, while resistance strain gage 6 is real-time by conducting slip ring
The surface stress for collecting corresponding site is passed into data information acquisition system 7, data information acquisition system by conducting slip ring
System 7 can monitor corresponding test site stress variation situation in real time by PC industrial personal computers 12, and then obtain arbitrary under working condition
The measuring point stress changing curve figure at moment.
Claims (6)
1. a kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor, which is characterized in that the disc type pull rod group
It includes rotor (2), pull rod (3), left disk (41), mid-game (42) and right disk (43) to close class rotor；It hangs down at the one side center of left disk (41)
It directly is provided with rotor (2), the one side center of right disk (43) is vertically installed with rotor (2), and left disk (41) and right disk (43) are not set
Being oppositely arranged on one side for rotor (2) is set, mid-game (42) is arranged between left disk (41) and right disk (43), and left disk (41), mid-game
(42) it is arranged concentrically with right disk (43)；Be both provided with tie rod hole on left disk (41), mid-game (42) and right disk (43), pull rod (3) according to
It is secondary to connect three disks across tie rod hole；
The test method of the real-time dynamic stress of disc type pull rod composite class rotor, includes the following steps：
Step 1：Determine that surface fatigue crackle, the position of stress concentration and adhering resistance easily occur for combination disc-type rod fastening rotor system
Foil gauge (6)；
Step 2：Conducting slip ring is installed in the end of rotor (2)；
Step 3：Resistance strain gage lead (5) is connected to the output line terminal (11) of conductive sliding ring rotor；
Step 4：Data collecting system (7) information collection end is connected with conducting slip ring stator output line terminal (8)；
Step 5：State calibration and debugging are carried out to resistance strain gage (6)；
Step 6：Turn-on data acquisition system and conducting slip ring power supply；
Step 7：Starting rotor-support-foundation system makes its rotation, external power supply be that resistance strain gage (6) and data acquire by conducting slip ring
System (7) is powered, while resistance strain gage (6) is sliding by conduction by the surface stress information for collecting corresponding measuring point position in real time
Ring passes to data information acquisition system (7), and data information acquisition system (7) is connected to PC industrial personal computers (12), and data information is adopted
Collecting system (7) monitors corresponding test site stress variation situation in real time by PC industrial personal computers (12).
2. a kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor according to claim 1, feature
It is, conducting slip ring includes conductive sliding ring rotor (10) and conducting slip ring stator (9)；Conductive sliding ring rotor (10) fixation is set in
On rotor (2), conducting slip ring stator (9), and fixed conducting slip ring stator (9) are arranged on the outside of conductive electric slip ring rotor (10).
3. a kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor according to claim 1, feature
It is, the end set of pull rod (3) has pull-rod nut (13).
4. a kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor according to claim 1, feature
It is, the both ends of rotor (2) are both provided with spring bearing (1), and spring bearing (1) is set in the end of rotor (2).
5. a kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor according to claim 1, feature
It is, annular convex platform contact surface is provided between left disk (41) and mid-game (42) and mid-game (42) and right disk (43).
6. a kind of test method of the real-time dynamic stress of disc type pull rod composite class rotor according to claim 1, feature
It is, the air line distance of the center position of conducting slip ring apart from spring bearing (1) end face center point is 0.03cm to 2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099011.8A CN108387331B (en) | 2018-01-31 | 2018-01-31 | Method for testing real-time dynamic stress of disc type pull rod combined rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099011.8A CN108387331B (en) | 2018-01-31 | 2018-01-31 | Method for testing real-time dynamic stress of disc type pull rod combined rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108387331A true CN108387331A (en) | 2018-08-10 |
| CN108387331B CN108387331B (en) | 2020-07-28 |
Family
ID=63074173
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810099011.8A Expired - Fee Related CN108387331B (en) | 2018-01-31 | 2018-01-31 | Method for testing real-time dynamic stress of disc type pull rod combined rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108387331B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781562A (en) * | 2019-01-25 | 2019-05-21 | 西安交通大学 | Measure the method and testing stand of combined rotor wheel disc linkage interface micro-moving frictional wear |
| CN113155014A (en) * | 2021-03-15 | 2021-07-23 | 清华大学 | Circumferential pull rod rotor pull rod dynamic strain measurement system |
| CN113654701A (en) * | 2021-08-24 | 2021-11-16 | 中国航发湖南动力机械研究所 | Dynamic stress measuring device for rotor blade of aircraft engine and application of dynamic stress measuring device |
| CN114577461A (en) * | 2022-03-22 | 2022-06-03 | 浙江吉利控股集团有限公司 | Detection system for residual life of steering pull rod and automobile |
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|---|---|---|---|---|
| DE4042270C1 (en) * | 1990-12-31 | 1992-04-23 | Dr. Staiger, Mohilo + Co Gmbh, 7060 Schorndorf, De | Torque pick=up using expansion measuring strips in bridge circuit - establishes coupling between rotor and housing by slip-rings and brushes on sprung retainers |
| JP2004177376A (en) * | 2002-11-29 | 2004-06-24 | Mitsuboshi Belting Ltd | Connecting method of strain gauge |
| CN1696630A (en) * | 2004-12-27 | 2005-11-16 | 西北工业大学 | Method and equipment for measuring torsional vibration of rotating mechanical rotor |
| CN103162922A (en) * | 2011-12-12 | 2013-06-19 | 西安真核医疗科技有限公司 | Switching-on system of rotary workpiece platform |
| CN104525314A (en) * | 2014-10-11 | 2015-04-22 | 内蒙古科技大学 | Test method for gas-solid two-phase flow field characteristics in crushing chamber of crusher |
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-
2018
- 2018-01-31 CN CN201810099011.8A patent/CN108387331B/en not_active Expired - Fee Related
Patent Citations (6)
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| JP2004177376A (en) * | 2002-11-29 | 2004-06-24 | Mitsuboshi Belting Ltd | Connecting method of strain gauge |
| CN1696630A (en) * | 2004-12-27 | 2005-11-16 | 西北工业大学 | Method and equipment for measuring torsional vibration of rotating mechanical rotor |
| CN103162922A (en) * | 2011-12-12 | 2013-06-19 | 西安真核医疗科技有限公司 | Switching-on system of rotary workpiece platform |
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Non-Patent Citations (1)
| Title |
|---|
| YI LIU ET AL: "Nonlinear dynamic characteristics of a three-dimensional rod-fastening rotor bearing system", 《PROC IMECHE PART C: J MECHANICAL 》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781562A (en) * | 2019-01-25 | 2019-05-21 | 西安交通大学 | Measure the method and testing stand of combined rotor wheel disc linkage interface micro-moving frictional wear |
| CN113155014A (en) * | 2021-03-15 | 2021-07-23 | 清华大学 | Circumferential pull rod rotor pull rod dynamic strain measurement system |
| CN113654701A (en) * | 2021-08-24 | 2021-11-16 | 中国航发湖南动力机械研究所 | Dynamic stress measuring device for rotor blade of aircraft engine and application of dynamic stress measuring device |
| CN113654701B (en) * | 2021-08-24 | 2023-07-25 | 中国航发湖南动力机械研究所 | Dynamic stress measuring device for aero-engine rotor blade and application thereof |
| CN114577461A (en) * | 2022-03-22 | 2022-06-03 | 浙江吉利控股集团有限公司 | Detection system for residual life of steering pull rod and automobile |
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| Publication number | Publication date |
|---|---|
| CN108387331B (en) | 2020-07-28 |
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Granted publication date: 20200728 |