CN105510009A - Pedestal vibration and structural noise testing analytical apparatus for gas turbine - Google Patents
Pedestal vibration and structural noise testing analytical apparatus for gas turbine Download PDFInfo
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- CN105510009A CN105510009A CN201510830546.4A CN201510830546A CN105510009A CN 105510009 A CN105510009 A CN 105510009A CN 201510830546 A CN201510830546 A CN 201510830546A CN 105510009 A CN105510009 A CN 105510009A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a pedestal vibration and structural noise testing analytical apparatus for a gas turbine. The apparatus comprises three-way vibration sensors, microphones, a PC machine, a multi-channel charging power supply, a signal conditioning device, an A/D converter, a DSP chip and a USB interface chip. Two three-way vibration sensors are arranged and are fixed on two mounting seats of a gas turbine. Three microphones are arranged at the two sides of and above a case of the gas turbine respectively. The output terminals of the three-way vibration sensors and the output terminals of the microphones are connected with the input terminal of the signal conditioning device; the output terminal of the signal conditioning device is connected with the input terminal of the A/D converter; the output terminal of the A/D converter is connected with the DSP chip; the DSP chip is connected with the PC machine by the USB interface chip; the output terminal of the multi-channel charging power supply is connected with power supply terminals of the three-way vibration sensors, power supply terminals of the microphones, a power supply terminal of the signal conditioning device, a power supply terminal of the A/D converter, a power supply terminal of the DSP chip, and a power supply terminal of the USB chip.
Description
Technical field
The invention belongs to rotating machinery vibrating technical field of measurement and test, be specifically related to gas turbine seat vibration and construct noise device for testing and analyzing.
Background technology
Existing gas turbine seat vibration and construct noise testing apparatus adopt the vibration of piezoelectric vibration pickup Test bench and construct noise, each measuring point installs three vibration transducers, vibration transducer is connected with charge amplifier by mininoise cable, external 24V direct supply is powered to charge amplifier, charge amplifier output voltage signal is to vibration noise analyser, vibration noise analyser is connected with computing machine by netting twine, analysis software is installed in computing machine, application FFT and CPB technology on-line analysis data, obtain seat vibration and construct noise result, as shown in Figure 1, this existing vibration and noise test equipment has the following disadvantages: testing apparatus needs the link of connection more, install, take-down time is long, affect test progress, because vibration transducer volume is comparatively large, quantity is more, when pedestal mounting surface is rough, three vibration transducers are pasted and are wasted time and energy, and install and loosely easily come off, a whole set of testing apparatus connects that wire is many, breakpoint is many, easily cause testing apparatus open circuit and after open circuit the troubleshooting time long, direct supply, vibration analyzer and computing machine all need to connect 220V AC power and power, general vibration noise analysis software setting steps is complicated, needs professional and technical personnel to operate, , installing/dismounting time-consuming effort many for existing testing apparatus connecting link, AC power must be used and need the problems such as professional and technical personnel operates, seat vibration and construct noise device for testing and analyzing need be developed, improve hardware testing scheme, solidification analysis software, make testing apparatus easy for installation, quick, software operation is simple, is applicable to the on-line real time monitoring task in production scene and outfield.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes gas turbine seat vibration and construct noise device for testing and analyzing.
Gas turbine seat vibration and construct noise device for testing and analyzing, comprise three-way vibration sensor, microphone and vibration noise analytical equipment;
Described vibration noise analytical equipment, comprises PC, hyperchannel charge power supply, signal conditioner, A/D converter, dsp chip and USB interface chip;
Described three-way vibration sensor has two, be individually fixed on two mount pads of gas turbine, described microphone has three, be positioned over both sides and the top of gas turbine casing respectively, the input end of the output terminal of described three-way vibration sensor and the output terminal connection signal conditioner of microphone, the output terminal of described signal conditioner connects the input end of A/D converter, the output terminal of described A/D converter connects dsp chip, described dsp chip connects PC by USB interface chip, the output terminal of described hyperchannel charge power supply connects the power end of three-way vibration sensor respectively, the power end of microphone, the power end of signal conditioner, the power end of A/D converter, the power end of dsp chip and the power end of USB chip.
Described three-way vibration sensor, for gathering the level of gas turbine pedestal, vertical and axial vibration signal, and being converted to voltage signal by vibration signal, transferring to signal conditioner;
Described microphone, for gathering the airborne noise signal of gas turbine, and transfers to signal conditioner;
Described signal conditioner, for carrying out signal buffering, amplification and filtering to the gas turbine seat vibration signal gathered and airborne noise signal, and transfers to A/D converter;
Described A/D converter, for the gas turbine seat vibration signal of collection and airborne noise signal are carried out digitizing conversion, and transfers to dsp chip;
Described dsp chip, analyzing for carrying out FFT and CPB to the gas turbine seat vibration signal gathered and airborne noise signal, obtaining gas turbine seat vibration signal, construct noise signal and airborne noise signal, and transferring to PC by USB interface;
Described hyperchannel charge power supply, for being three-way vibration sensor, microphone, signal conditioner, A/D converter and dsp chip and USB chip power supply;
Described PC, for storing data, and shows gas turbine seat vibration signal, construct noise signal and airborne noise signal.
Described three-way vibration sensor is the three-way vibration sensor of built-in miniature ICP integrated circuit.
Described PC is also connected with printer, for printing gas turbine seat vibration signal spectrum figure, construct noise signal spectrum figure and airborne noise signal spectrum figure.
Described three microphones are arranged on the position of distance gas turbine casing 1 meter.
Beneficial effect of the present invention:
The present invention proposes gas turbine seat vibration and construct noise device for testing and analyzing, this application of installation is in the on-line testing of gas turbine seat vibration and construct noise, three-way vibration sensor is with being fixed to pedestal mounting surface, vibration noise analytical equipment directly gathers the output signal of vibration transducer, and this signal obtains seat vibration and construct noise test result respectively after DSP and PC analysis.Needed for this device, parts are few, easy for installation, quick, simple to operate, are applicable to production scene on-line testing.
Accompanying drawing explanation
Fig. 1 is the connection layout of existing gas turbine seat vibration and construct noise testing apparatus;
Wherein, 1-vibration analyzer, 2-BNC patchplug, 3-computing machine, 4-charge amplifier, 5-power supply wiring is arranged, 6-24V direct supply, 7-vibration transducer measuring point 1,8-vibration transducer measuring point 2,9-microphone;
Fig. 2 is the structural representation of gas turbine seat vibration and construct noise device for testing and analyzing in the specific embodiment of the invention;
Fig. 3 is the construct noise signal testing spectrogram of gas turbine in the specific embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing to specific embodiment of the invention detailed description in addition.
Gas turbine seat vibration and construct noise device for testing and analyzing, as shown in Figure 2, comprise three-way vibration sensor, microphone and vibration noise analytical equipment.
Vibration noise analytical equipment, comprises PC, hyperchannel charge power supply, signal conditioner, A/D converter, dsp chip and USB interface chip.
In present embodiment, three-way vibration sensor has two, stick with glue respectively on two mount pads of gas turbine, microphone has three, be positioned over both sides and the top of gas turbine casing respectively, the position of distance gas turbine casing 1 meter, the input end of the output terminal of three-way vibration sensor and the output terminal connection signal conditioner of microphone, the output terminal of described signal conditioner connects the input end of A/D converter, the output terminal of A/D converter connects dsp chip, dsp chip connects PC by USB interface chip, the output terminal of hyperchannel charge power supply connects the power end of three-way vibration sensor respectively, the power end of microphone, the power end of signal conditioner, the power end of A/D converter, the power end of dsp chip and the power end of USB chip.
In present embodiment, three-way vibration sensor is the three-way vibration sensor of built-in miniature ICP integrated circuit, model is endevco65HT-10, for gathering the level of gas turbine pedestal, vertical and axial vibration signal, and vibration signal is converted to voltage signal, transfer to signal conditioner.
In present embodiment, microphone selected by microphone, and its model is G.R.A.S.40HH, for gathering the airborne noise signal of gas turbine, and transfers to signal conditioner.
In present embodiment, the model of signal conditioner is PAG103U, for carrying out signal buffering, amplification and filtering to the gas turbine seat vibration signal gathered and airborne noise signal, and transfers to A/D converter.
In present embodiment, the model of A/D converter is AD7685, for the gas turbine seat vibration signal of collection and airborne noise signal are carried out digitizing conversion, and transfers to dsp chip.
In present embodiment, the model of dsp chip is TMS320VC33DSP chip, for carrying out FFT and CPB pre-service to the gas turbine seat vibration signal gathered and airborne noise signal, obtain gas turbine seat vibration signal, construct noise signal and airborne noise signal, and transfer to PC by USB interface.
In present embodiment, the model of hyperchannel charge power supply is UC3906, for being three-way vibration sensor, microphone, signal conditioner, A/D converter and dsp chip and USB chip power supply.
In present embodiment, PC is provided with labview software, the driver of solidification FFT and CPB analysis software and usb data collector, for disposal data, store data and display gas turbine seat vibration signal, construct noise signal and airborne noise signal, PC is also connected with printer, for printing gas turbine seat vibration signal spectrum figure, construct noise signal spectrum figure and airborne noise signal spectrum figure.
In present embodiment, as shown in Figure 3, transverse axis is frequency interval is third-octave to the construct noise signal testing spectrogram of the gas turbine obtained, unit Hz, and Z-axis is construct noise, unit dB.
The course of work of above-mentioned gas turbine seat vibration and construct noise device for testing and analyzing is as follows:
Three-way vibration sensor gathers the level of gas turbine pedestal, vertical and axial vibration signal, and vibration signal is converted to voltage signal, the airborne noise signal of microphone pick gas turbine, signal conditioner carries out signal buffering to the gas turbine seat vibration signal gathered and airborne noise signal, amplify and filtering, A/D converter, the gas turbine seat vibration signal gathered and airborne noise signal carry out digitizing conversion, carry out FFT and CPB by dsp chip to gas turbine seat vibration signal and airborne noise signal to analyze, obtain gas turbine seat vibration signal, construct noise signal and airborne noise signal, and transfer to PC by USB interface, hyperchannel charge power supply is three-way vibration sensor, microphone, signal conditioner, A/D converter and dsp chip and USB chip provide power supply, PC display gas turbine seat vibration signal, construct noise signal and airborne noise signal, PC is also connected with printer and prints gas turbine seat vibration signal spectrum figure, construct noise signal spectrum figure and airborne noise signal spectrum figure.
Claims (5)
1. gas turbine seat vibration and construct noise device for testing and analyzing, is characterized in that, comprises three-way vibration sensor, microphone and vibration noise analytical equipment;
Described vibration noise analytical equipment, comprises PC, hyperchannel charge power supply, signal conditioner, A/D converter, dsp chip and USB interface chip;
Described three-way vibration sensor has two, be individually fixed on two mount pads of gas turbine, described microphone has three, be positioned over both sides and the top of gas turbine casing respectively, the input end of the output terminal of described three-way vibration sensor and the output terminal connection signal conditioner of microphone, the output terminal of described signal conditioner connects the input end of A/D converter, the output terminal of described A/D converter connects dsp chip, described dsp chip connects PC by USB interface chip, the output terminal of described hyperchannel charge power supply connects the power end of three-way vibration sensor respectively, the power end of microphone, the power end of signal conditioner, the power end of A/D converter, the power end of dsp chip and the power end of USB chip.
2. gas turbine seat vibration and construct noise device for testing and analyzing according to claim 1, it is characterized in that, described three-way vibration sensor, for gathering the level of gas turbine pedestal, vertical and axial vibration signal, and vibration signal is converted to voltage signal, transfer to signal conditioner;
Described microphone, for gathering the airborne noise signal of gas turbine, and transfers to signal conditioner;
Described signal conditioner, for carrying out signal buffering, amplification and filtering to the gas turbine seat vibration signal gathered and airborne noise signal, and transfers to A/D converter;
Described A/D converter, for the gas turbine seat vibration signal of collection and airborne noise signal are carried out digitizing conversion, and transfers to dsp chip;
Described dsp chip, analyzing for carrying out FFT and CPB to the gas turbine seat vibration signal gathered and airborne noise signal, obtaining gas turbine seat vibration signal, construct noise signal and airborne noise signal, and transferring to PC by USB interface;
Described hyperchannel charge power supply, for being three-way vibration sensor, microphone, signal conditioner, A/D converter and dsp chip and USB chip power supply;
Described PC, for storing data, and shows gas turbine seat vibration signal, construct noise signal and airborne noise signal.
3. gas turbine seat vibration according to claim 1 and construct noise device for testing and analyzing, is characterized in that, described three-way vibration sensor is the three-way vibration sensor of built-in miniature ICP integrated circuit.
4. gas turbine seat vibration according to claim 1 and construct noise device for testing and analyzing, it is characterized in that, described PC is also connected with printer, for printing gas turbine seat vibration signal spectrum figure, construct noise signal spectrum figure and airborne noise signal spectrum figure.
5. gas turbine seat vibration according to claim 1 and construct noise device for testing and analyzing, is characterized in that, described three microphones are arranged on the position of distance gas turbine casing 1 meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830546.4A CN105510009A (en) | 2015-11-25 | 2015-11-25 | Pedestal vibration and structural noise testing analytical apparatus for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830546.4A CN105510009A (en) | 2015-11-25 | 2015-11-25 | Pedestal vibration and structural noise testing analytical apparatus for gas turbine |
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| CN105510009A true CN105510009A (en) | 2016-04-20 |
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| CN201510830546.4A Pending CN105510009A (en) | 2015-11-25 | 2015-11-25 | Pedestal vibration and structural noise testing analytical apparatus for gas turbine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167230A (en) * | 2017-04-17 | 2017-09-15 | 北京交通大学 | The method that building secondary radiation noise is assessed using building construction vibration attenuation rate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5745416A (en) * | 1980-09-03 | 1982-03-15 | Hitachi Ltd | Method for diagnosis of unbalance position by vibration of rotating machine |
| CN101118177A (en) * | 2007-08-28 | 2008-02-06 | 北京航空航天大学 | Portable two-channel vibrating functional failure diagnostic apparatus |
| CN101694182A (en) * | 2009-09-29 | 2010-04-14 | 上海中科清洁能源技术发展中心 | On-line failure diagnosis, prediction and feedback control method of small/medium size gas turbine and device thereof |
| CN201622113U (en) * | 2010-04-08 | 2010-11-03 | 四川拓普测控科技有限公司 | Intelligent vibration monitor |
-
2015
- 2015-11-25 CN CN201510830546.4A patent/CN105510009A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5745416A (en) * | 1980-09-03 | 1982-03-15 | Hitachi Ltd | Method for diagnosis of unbalance position by vibration of rotating machine |
| CN101118177A (en) * | 2007-08-28 | 2008-02-06 | 北京航空航天大学 | Portable two-channel vibrating functional failure diagnostic apparatus |
| CN101694182A (en) * | 2009-09-29 | 2010-04-14 | 上海中科清洁能源技术发展中心 | On-line failure diagnosis, prediction and feedback control method of small/medium size gas turbine and device thereof |
| CN201622113U (en) * | 2010-04-08 | 2010-11-03 | 四川拓普测控科技有限公司 | Intelligent vibration monitor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167230A (en) * | 2017-04-17 | 2017-09-15 | 北京交通大学 | The method that building secondary radiation noise is assessed using building construction vibration attenuation rate |
| CN107167230B (en) * | 2017-04-17 | 2019-06-28 | 北京交通大学 | Utilize the method for building construction vibration attenuation rate assessment building secondary radiation noise |
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Application publication date: 20160420 |
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