CN112414657A - An electromagnetic vibration excitation device for vibration measurement of gas turbine compressor blades - Google Patents
An electromagnetic vibration excitation device for vibration measurement of gas turbine compressor blades Download PDFInfo
- Publication number
- CN112414657A CN112414657A CN202011325648.8A CN202011325648A CN112414657A CN 112414657 A CN112414657 A CN 112414657A CN 202011325648 A CN202011325648 A CN 202011325648A CN 112414657 A CN112414657 A CN 112414657A
- Authority
- CN
- China
- Prior art keywords
- vibration
- gas turbine
- electromagnetic
- turbine compressor
- blade
- Prior art date
- 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.)
- Pending
Links
- 230000005284 excitation Effects 0.000 title claims abstract description 31
- 238000005259 measurement Methods 0.000 title claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 7
- 235000013871 bee wax Nutrition 0.000 claims description 3
- 239000012166 beeswax Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
本发明公开了一种燃气轮机压气机叶片振动测量的电磁激振装置，包括信号发生器、功率放大器、电磁铁、线圈、安装盒、支架。其中，利用信号发生器产生正弦信号，通过功率放大器后，传输给电磁激振器，对压气机叶片施加各种信号的激振力。本发明解决了传统叶片采用接触式激振方式会带来附加质量、引起叶片表面损坏、安装困难等的问题，能够满足燃气轮机压气机叶片振动试验中对叶片进行激振的要求，并能调节激振力幅值大小。
The invention discloses an electromagnetic excitation device for vibration measurement of a gas turbine compressor blade, comprising a signal generator, a power amplifier, an electromagnet, a coil, an installation box and a bracket. Among them, a signal generator is used to generate a sinusoidal signal, and after passing through a power amplifier, it is transmitted to an electromagnetic vibration exciter, and the excitation force of various signals is applied to the compressor blades. The invention solves the problems of additional mass, damage to the blade surface, installation difficulty, etc. caused by the contact excitation method of the traditional blade, can meet the requirements for excitation of the blade in the vibration test of the gas turbine compressor blade, and can adjust the excitation The magnitude of the vibration force.
Description
Technical Field
The invention relates to a gas turbine compressor blade vibration test device, in particular to an electromagnetic excitation device for gas turbine compressor blade vibration measurement.
Background
The vibration safety of the compressor blade of the gas turbine is realized. With the development of the design technology of the vibration and the structural strength of the blades of the gas turbine compressor and the continuous and deep research on the safety of the vibration of the blades, higher requirements are put forward on the accuracy of the vibration test work of the blades of the gas turbine compressor.
Vibration measurement of gas turbine compressor blades by using vibration exciters is generally divided into a connecting rod type or a push rod type, and both the two methods are in contact type vibration excitation. The connecting rod type vibration exciter needs to adopt a nut to connect and install the connecting rod and the blade, so that the installation is inconvenient, additional mass can be brought during vibration measurement, and the testing precision is influenced. The ejector rod type excitation can only generate ejection force in the direction, and cannot generate pulling force in the opposite direction, the ejector rod generates impact contact with the surface of the blade when applying excitation force to the blade, and the surface of the blade can be damaged when the excitation force is too large. In addition, when the surface of the gas turbine compressor blade is coated with a protective coating or the machining precision of the surface of the blade is high, the link-type and ejector-type excitation methods are not suitable.
Disclosure of Invention
The invention aims to provide an electromagnetic excitation device for measuring vibration of a gas turbine compressor blade, aiming at the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electromagnetic excitation device for measuring vibration of a gas turbine compressor blade comprises a signal generator, wherein the signal generator is connected with a power amplifier, the power amplifier is connected with an electromagnetic vibration exciter, the electromagnetic vibration exciter is arranged on an electromagnetic vibration exciter base, and the electromagnetic vibration exciter base is fixedly arranged on a support by adopting a fastener; the gas turbine compressor blade is fixed by a blade fixing device, and the blade body part of the compressor blade is provided with a vibration pickup which is connected with a vibration signal data acquisition system.
The invention is further improved in that the support is fixedly arranged on the base by adopting a fastening bolt.
The invention is further improved in that the bracket comprises a plurality of diagonal draw bars for reinforcing the bracket.
The invention is further improved in that the blade fixing device is fixedly installed on the base by adopting a fastening bolt.
The invention is further improved in that the electromagnetic vibration exciter comprises a mounting box, a U-shaped electromagnet fixedly and hermetically mounted in the mounting box, and a winding resistor wound on the U-shaped electromagnet, wherein the winding resistor is connected with the power amplifier.
The invention is further improved in that the blade fixing device is provided with a cushion block at the blade root of the compressor blade of the gas turbine.
The invention is further improved in that the blade root of the gas turbine compressor blade is screwed and fixed by a fastening bolt on a vertical plate of the blade fixing device.
The invention is further improved in that the vibration pickup device is arranged at the vibration pickup position of the compressor blade of the gas turbine by adopting beeswax, bonding glue or a magnet.
Compared with the prior art, the invention has the following technical effects:
the invention relates to an electromagnetic excitation device for measuring the vibration of a gas turbine compressor blade, which is suitable for the vibration test of the gas turbine compressor blade. The electromagnetic harmonic vibration exciter can select different types of electromagnetic vibration exciters according to the size of the blade and the exciting force, cannot damage the blade, and is convenient to install. The power amplifier can be used for adjusting the size of the electromagnetic harmonic exciting force, and is convenient for changing and controlling the size of the exciting force in the blade vibration testing process.
In conclusion, the electromagnetic excitation device for the vibration measurement of the gas turbine compressor blade solves the problems that the traditional blade adopts a contact excitation mode to bring additional mass, cause blade surface damage, difficult installation and the like, can meet the requirement of exciting the blade in the vibration test of the gas turbine compressor blade, and can adjust the amplitude of the exciting force.
Drawings
FIG. 1 is an overall schematic diagram of an electromagnetic excitation device for gas turbine compressor blade vibration measurement;
FIG. 2 is a circuit connection diagram of an electromagnetic exciter;
FIG. 3 is a schematic view of a gas turbine compressor blade fixture.
Description of reference numerals:
1. a signal generator; 2. a power amplifier; 3. an electromagnetic vibration exciter; 4. a base of an electromagnetic vibration exciter; 5. a support; 6. fastening a bolt; 7. a base; 8. a diagonal brace; 9. gas turbine compressor blades; 10. a blade fixing device; 11. a vibration pickup; 12. a vibration signal data acquisition system; 13. a U-shaped electromagnet; 14. winding a resistor; 15. mounting a box; 16. a compressor blade root; 17. cushion blocks; 18. a vertical plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a signal generator 1 is connected with a power amplifier 2, the power amplifier 2 is connected with an electromagnetic vibration exciter 3, the electromagnetic vibration exciter 3 is mounted on an electromagnetic vibration exciter base 4, the electromagnetic vibration exciter base 4 is fixedly mounted on a bracket 5 by adopting a fastener, the bracket 5 is fixedly mounted on a foundation base 7 by adopting a fastening bolt 6, and the bracket comprises a plurality of diagonal ribs 8 for reinforcing the bracket 5; a gas turbine compressor blade 9 is fixed by a blade fixing device 10 and fixedly installed on a base 7 by fastening bolts, a vibration pickup 11 is arranged at the blade body part of the gas turbine compressor blade, and the vibration pickup 11 is connected with a vibration signal data acquisition system 12.
The vibration pickup device 11 can be arranged at the vibration pickup position of the compressor blade 9 of the gas turbine by adopting beeswax, bonding glue, a magnet and the like.
Referring to fig. 2, the electromagnetic vibration exciter 3 includes a U-shaped electromagnet 13, a winding resistor 14 wound on the U-shaped electromagnet 13, and the winding resistor 14 is fixedly enclosed in a mounting box 15, and is connected to the power amplifier 2.
Referring to fig. 3, the blade fixing device 10 is provided with a cushion block 17 at a blade root 16 of a compressor blade of a gas turbine, and the blade root is screwed and fixed on a vertical plate 18 by a fastening bolt.
For a further understanding of the invention, its operation will now be described.
When the vibration exciter works, various vibration exciting signals such as sine signals, saw teeth signals and the like are generated by the signal generator 1, and are transmitted to the electromagnetic vibration exciter 3 after passing through the power amplifier 2, the vibration exciting force is applied to the gas compressor blade 3 of the gas turbine, and the amplitude of the vibration exciting force can be changed by adjusting the amplification factor of the power amplifier. The invention solves the problems of additional mass, blade surface damage, difficult installation and the like caused by adopting a contact type excitation mode of the traditional blade, and can meet the excitation requirement on the blade in the vibration test of the gas turbine compressor blade.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011325648.8A CN112414657A (en) | 2020-11-23 | 2020-11-23 | An electromagnetic vibration excitation device for vibration measurement of gas turbine compressor blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011325648.8A CN112414657A (en) | 2020-11-23 | 2020-11-23 | An electromagnetic vibration excitation device for vibration measurement of gas turbine compressor blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112414657A true CN112414657A (en) | 2021-02-26 |
Family
ID=74778817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011325648.8A Pending CN112414657A (en) | 2020-11-23 | 2020-11-23 | An electromagnetic vibration excitation device for vibration measurement of gas turbine compressor blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112414657A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049236A (en) * | 2021-03-10 | 2021-06-29 | 华电电力科学研究院有限公司 | Blade frequency measurement device based on Internet of things identification technology |
| CN113432818A (en) * | 2021-06-25 | 2021-09-24 | 上海交通大学 | Programmable force-excited blade vibration testing device |
| CN113959664A (en) * | 2021-11-19 | 2022-01-21 | 华能国际电力股份有限公司 | A kind of blade dynamic frequency telemetry device using piezoelectric sheet |
| CN114166336A (en) * | 2021-12-02 | 2022-03-11 | 成都市鸿侠科技有限责任公司 | Intelligent airplane generator blade frequency measuring tool and machining process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003098031A (en) * | 2001-09-25 | 2003-04-03 | Mitsubishi Heavy Ind Ltd | Excitation device |
| CN103353383A (en) * | 2013-07-31 | 2013-10-16 | 沈阳工程学院 | Experimental apparatus for testing vibration mode of simulated impeller of turbine |
| CN105258886A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Electromagnetic harmonic wave exciting device for high-speed rotating impeller |
| CN105699074A (en) * | 2016-04-01 | 2016-06-22 | 山东大学 | Fluid-structure interaction dynamic property testing device for blade-rotor system |
| CN205620096U (en) * | 2016-04-26 | 2016-10-05 | 沈阳工程学院 | Experimental apparatus is measured to detuning bladed disk system vibration characteristic |
| CN207248535U (en) * | 2017-08-30 | 2018-04-17 | 华能国际电力股份有限公司 | Gas turbine blade end wall heat transfer test system |
| CN213397563U (en) * | 2020-11-23 | 2021-06-08 | 华能国际电力股份有限公司 | Electromagnetic excitation device for gas turbine compressor blade vibration measurement |
-
2020
- 2020-11-23 CN CN202011325648.8A patent/CN112414657A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003098031A (en) * | 2001-09-25 | 2003-04-03 | Mitsubishi Heavy Ind Ltd | Excitation device |
| CN103353383A (en) * | 2013-07-31 | 2013-10-16 | 沈阳工程学院 | Experimental apparatus for testing vibration mode of simulated impeller of turbine |
| CN105258886A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Electromagnetic harmonic wave exciting device for high-speed rotating impeller |
| CN105699074A (en) * | 2016-04-01 | 2016-06-22 | 山东大学 | Fluid-structure interaction dynamic property testing device for blade-rotor system |
| CN205620096U (en) * | 2016-04-26 | 2016-10-05 | 沈阳工程学院 | Experimental apparatus is measured to detuning bladed disk system vibration characteristic |
| CN207248535U (en) * | 2017-08-30 | 2018-04-17 | 华能国际电力股份有限公司 | Gas turbine blade end wall heat transfer test system |
| CN213397563U (en) * | 2020-11-23 | 2021-06-08 | 华能国际电力股份有限公司 | Electromagnetic excitation device for gas turbine compressor blade vibration measurement |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049236A (en) * | 2021-03-10 | 2021-06-29 | 华电电力科学研究院有限公司 | Blade frequency measurement device based on Internet of things identification technology |
| CN113432818A (en) * | 2021-06-25 | 2021-09-24 | 上海交通大学 | Programmable force-excited blade vibration testing device |
| CN113959664A (en) * | 2021-11-19 | 2022-01-21 | 华能国际电力股份有限公司 | A kind of blade dynamic frequency telemetry device using piezoelectric sheet |
| CN114166336A (en) * | 2021-12-02 | 2022-03-11 | 成都市鸿侠科技有限责任公司 | Intelligent airplane generator blade frequency measuring tool and machining process thereof |
| CN114166336B (en) * | 2021-12-02 | 2024-04-05 | 成都市鸿侠科技有限责任公司 | Intelligent aircraft generator blade frequency measurement tool and processing technology thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112414657A (en) | An electromagnetic vibration excitation device for vibration measurement of gas turbine compressor blades | |
| CN102564685B (en) | Multi-dimensional force sensor dynamic experiment device based on stable-state sine exciting force | |
| RU2595322C2 (en) | System and method for simulating high-intensity pyrotechnic shock | |
| CN105928676B (en) | The vibration-testing apparatus of damping mistuned bladed disk with damping block structure | |
| CN112710448B (en) | A Resonance Fatigue Test Method Applicable to Combined Stress Load | |
| CN103698128B (en) | A kind of air gaps hybrid magnetic suspension bearing performance testing device | |
| CN111649926B (en) | Axial and vibration high-low cycle composite fatigue test device | |
| CN112665844B (en) | System and method for testing high-frequency vibration reduction characteristics of turbine blade with friction damping device | |
| CN107460303B (en) | A simply supported formula vibration ageing platform for roof beam component | |
| CN102564684B (en) | Method for multi-dimensional sensor dynamic test device based on stable-state sine excitation force | |
| CN101251411A (en) | impeller blade measuring device | |
| CN113740042B (en) | Experimental testing device and method for vibration contact characteristics of gas turbine blade damper system | |
| CN110501147B (en) | Test system and method for measuring vibration reduction characteristics of blade disc structure with friction damping device | |
| CN103076247A (en) | Material bending fatigue test system and test method | |
| CN213397563U (en) | Electromagnetic excitation device for gas turbine compressor blade vibration measurement | |
| CN105258886B (en) | A kind of electromagnetism harmonic wave exciting device of high-speed rotating impeller | |
| CN108036909B (en) | Clamping tool for vibration simulation actuator cylinder physical quantity | |
| CN102539160A (en) | Jogging fatigue simulation experiment system of resonant internal combustion engine | |
| CN107356392A (en) | A kind of beam oscillating aging platform flexible jig device | |
| CN114001941B (en) | Ship propulsion shafting exciting force centering loading and detecting device | |
| JP3166499B2 (en) | Bridge Exciter | |
| CN212721731U (en) | Aero-engine single crystal turbine blade frequency test fixture | |
| CN115962904A (en) | Experimental System of Vibration Reduction Performance of Blisk Dynamic Vibration Absorber | |
| CN213456041U (en) | Beam structure vibration fatigue device | |
| CN109764917B (en) | Dynamic characteristic test system of bending vibration ultrasonic processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |