CN107036703A - Vibration monitor system for engine high-temperature casing - Google Patents
Vibration monitor system for engine high-temperature casing Download PDFInfo
- Publication number
- CN107036703A CN107036703A CN201611039431.4A CN201611039431A CN107036703A CN 107036703 A CN107036703 A CN 107036703A CN 201611039431 A CN201611039431 A CN 201611039431A CN 107036703 A CN107036703 A CN 107036703A
- Authority
- CN
- China
- Prior art keywords
- erecting bed
- radiating
- vibration
- factor
- bolt
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of vibration monitor system for engine high-temperature casing, including radiating erecting bed and shell ring, shell ring lower end has the non-closed connection end in strap bolt hole, and cooperation, which is provided with bolt, bolt, in bolt hole is set with spring shim；The circular arc of radiating erecting bed bottom installs end face with being fixedly connected at the top of shell ring, and heat-insulated dead slot is provided with the middle part of radiating erecting bed, and oblique be connected with oblique reinforcement, radiating erecting bed is provided with heat emission hole in the heat-insulated dead slot of erecting bed that radiates；Vibrating sensor is installed at the top of radiating erecting bed, vibrating sensor is connected by data wire with acquisition analysis system telecommunication.Vibrating sensor heat radiation supported of the invention with thermal deformation adaptive equalization function, sensor erecting bed is provided with heat dissipation weight-reducing hole, can effectively distribute heat, is installed for sensor and provides suitable mechanical environment, on the one hand the vibration signal that sensor is measured is used for early warning, on the one hand for fault diagnosis.
Description
Technical field
It is used for engine height the present invention relates to high temperature casing vibration-testing and fault diagnosis technology field, more particularly to one kind
The vibration monitor system of warm casing.
Background technology
Bearing is in high-temperature region after Micro Turbine Jet Engine, and bear vibration is optimal selection in theory after monitoring, and it is stranded
Difficulty is the influence for overcoming high temperature, and optimal monitoring point is on Thin-Wall Outer Casing, factually surveyed, its wall temperature is up to more than 600 DEG C, high temperature
Sensor is expensive, and Hz-KHz significantly constriction, and cost performance is relatively low, and because casing is thin-wall construction, no matter is sensor
It is glued or threaded connection is extremely difficult, directly test adds testing cost and difficulty, because high temperature is to sensor electric charge
Larger skew can occur for the influence of component, performance, and test effect is difficult to ensure that, thus bearing vibration monitoring after carrying out, at signal
Reason and fault diagnosis seem difficult and are necessary.
The content of the invention
Part, is used for engine high-temperature casing it is an object of the invention to provide one kind in view of the shortcomings of the prior art
Vibration monitor system, be that high temperature casing vibration measurement has manufactured suitable mechanical environment, can monitor high temperature casing vibration simultaneously
Carry out fault diagnosis.
The purpose of the present invention is achieved through the following technical solutions：
A kind of vibration monitor system for engine high-temperature casing, including radiating erecting bed and shell ring, the clip
Band surrounds the round-shaped of non-closed, and the shell ring lower end has non-closed connection end, is opened on non-closed connection end
There is bolt hole, coordinate in the bolt hole of non-closed connection end and bolt is installed, bolt passes through the bolt hole of non-closed connection end
It is connected with nut matching thread, several spring shims is set with the bolt；The radiating erecting bed bottom has circular arc
Shape installs end face, and the circular arc of the radiating erecting bed installs end face with being fixedly connected at the top of shell ring, the radiating erecting bed
Middle part be provided with it is oblique in heat-insulated dead slot, the heat-insulated dead slot of the radiating erecting bed be connected with several oblique reinforcements, it is described to dissipate
Several heat emission holes are provided with hot erecting bed；Sensor mounting hole is provided with the top of the radiating erecting bed, is installed in the sensor
Coordinate in hole and vibrating sensor is installed, the vibrating sensor is connected by data wire with acquisition analysis system telecommunication, institute
State vibration data that vibrating sensor is used to detecting engine high-temperature casing and by the vibration data by data line transfer to adopting
There is computation analysis module and vibration warning module, the calculating analysis in set analysis system, inside the acquisition analysis system
Module is used for the vibration data detected according to vibrating sensor by calculating and drawing the kurtosis factor and peak factor, the meter
Point counting analysis inside modules have kurtosis factor data storehouse and peak factor database, and kurtosis factor data stock contains the kurtosis factor
Normal index value and kurtosis factor normal index threshold value, peak factor database purchase have peak factor normal index value and
Peak factor normal index threshold value, the computation analysis module by the kurtosis factor calculated, peak factor respectively with kurtosis because
Sub- normal index threshold value, peak factor normal index threshold value are compared；When the kurtosis factor calculated is being more than the kurtosis factor just
Normal metrics-thresholds, or the peak factor calculated is when being more than peak factor normal index threshold value, then computation analysis module is to shaking
Dynamic warning module sends pre-warning signal, and vibration warning module receives after pre-warning signal responsive operation and indicates acquisition analysis system
Show red early warning signal, acquisition analysis system also show the vibration data that vibrating sensor detects, the kurtosis calculated because
Son and peak factor；When the kurtosis factor calculated is not more than kurtosis factor normal index threshold value and the peak factor calculated
No more than peak factor normal index threshold value when, then vibrate warning module do not work.
Also connected to realize inside the fault diagnosis purpose of the present invention, the acquisition analysis system with telecommunication successively
Wavelet de-noising unit, bandpass filtering unit, envelope signal processing unit and fault diagnosis module, the acquisition analysis system connects
The vibration data for coming from vibrating sensor is received, the wavelet de-noising unit is used for the vibration data detected to vibrating sensor
Carry out adaptive threshold noise reduction process and filter out HF noise signal data, the bandpass filtering unit, which is received, comes from small echo
Vibration data and sampling after noise reduction unit noise reduction extract the vibration data of a certain frequency range, and the envelope signal processing unit connects
Receive the vibration data for coming from a certain frequency range of bandpass filtering unit and obtain envelope signal by envelope signal processing, while envelope
Signal processing unit is used to envelope signal obtaining envelope frequency spectrum by processing, and the fault diagnosis module storage inside is faulty
Envelope frequency spectrum database, failure envelope frequency spectrum database includes the faulty envelope frequency spectrum of institute, and the fault diagnosis module is used for will
Envelope frequency spectrum is contrasted with the failure envelope frequency spectrum in failure envelope frequency spectrum database and draws the event corresponding to envelope frequency spectrum
Barrier situation, the fault diagnosis module transmits failure situation and corresponding vibration data to acquisition analysis system progress pair
It should show.
Preferably, the heat emission hole of the radiating erecting bed includes several horizontal bar shaped heat emission holes and several vertical bars
Shape heat emission hole.
Preferably, being also set with several flat shims on the bolt, all flat shims are disposed in proximity to bolt
Bolt head side, all spring shims are disposed in proximity to nut side.
Preferably, oblique in the heat-insulated dead slot of the radiating erecting bed be connected with two oblique reinforcements.
Preferably, the circular arc of the radiating erecting bed installs end face with being welded and fixed at the top of shell ring.
Preferably, the sensor mounting hole is located at sensor mounting hole top position.
The present invention compared with the prior art, with advantages below and beneficial effect：
Vibrating sensor heat radiation supported of the invention with thermal deformation adaptive equalization function, being capable of adaptive equalization high temperature machine
Casket is deformed so that clip surface is close to vibrate casing, reduces modulation of the clip vibration to bearing vibration signal, sensor erecting bed
Heat dissipation weight-reducing hole is provided with, heat can be effectively distributed, is provided for sensor vibration measuring and biography is provided with suitable mechanical environment, erecting bed
Sensor installs screwed hole, to install pyrostat；On the one hand the vibration signal that sensor is measured is used to vibrate early warning, a side
Face is used for fault diagnosis.
Brief description of the drawings
Fig. 1 is the structural representation after shell ring of the present invention is combined with elastic clamp device；
Fig. 2 is structural representation of the invention.
Wherein, it is entitled corresponding to the reference in accompanying drawing：
1- radiating erecting beds, the heat-insulated dead slots of 11-, 12- transverse direction bar shaped heat emission holes, the vertical bar shaped heat emission holes of 13-, 14-
Circular arc installs end face, the oblique reinforcements of 2-, 3- sensor mounting hole, 4- shell rings, 41- non-closed connection end, 5- spiral shells
Bolt, 6- flat shims, 7- spring shims, 8- nuts, 9- vibrating sensors, 10- data wires, 15- acquisition analysis systems,
151- wavelet de-noising units, 152- bandpass filtering units, 153- envelope signal processing units, 154- fault diagnosis modules.
Embodiment
The present invention is described in further detail with reference to embodiment：
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of vibration monitor system for engine high-temperature casing, including radiating erecting bed
1 and shell ring 4, shell ring 4 surrounds the round-shaped of non-closed, and the lower end of shell ring 4 has non-closed connection end 41, non-
Closure is provided with bolt hole on connection end 41, coordinates in the bolt hole of non-closed connection end 41 and is provided with bolt 5, bolt 5 is passed through
The bolt hole of non-closed connection end 41 is connected with the matching thread of nut 8, and several spring shims 7 are set with bolt 5；Radiating peace
There is circular arc to install end face 14 for dress platform 1 bottom, and the circular arc of radiating erecting bed 1 installs end face 14 and the top of shell ring 4 is fixed
Connection, the middle part of radiating erecting bed 1 is provided with heat-insulated dead slot 11, oblique in the heat-insulated dead slot 11 of erecting bed 1 that radiates to be connected with several
Several heat emission holes are provided with oblique reinforcement 2, radiating erecting bed 1；The top of radiating erecting bed 1 is provided with sensor mounting hole 3,
Coordinate in the sensor mounting hole 3 and vibrating sensor 9 is installed, vibrating sensor 9 passes through data wire 10 and acquisition analysis system
15 telecommunications are connected, and vibrating sensor 9 is used to detect the vibration data of engine high-temperature casing and the vibration data is passed through into number
It is transferred to according to line 10 in acquisition analysis system 15, the inside of acquisition analysis system 15 has computation analysis module and vibration early warning mould
Block, computation analysis module is used for the vibration data detected according to vibrating sensor 9 by calculating and drawing the kurtosis factor in real time
With peak factor, the calculation expression of the wherein kurtosis factor is：In formula, KkurtosisFor
The kurtosis factor, μxFor the amplitude average value of vibration data, S is the amplitude standard deviation of vibration data, and x is amplitude,For peak-to-peak value.
The calculation expression of peak factor is：In formula, KcrestFor peak factor,For the amplitude maximum of vibration data
Value, xrmsFor the amplitude root value of vibration data.
There is kurtosis factor data storehouse and peak factor database, kurtosis factor data library storage inside computation analysis module
There are kurtosis factor normal index value and kurtosis factor normal index threshold value, peak factor database purchase has peak factor normal
Desired value and peak factor normal index threshold value, computation analysis module by the kurtosis factor calculated, peak factor respectively with
Kurtosis factor normal index threshold value, peak factor normal index threshold value are compared；When the kurtosis factor calculated is more than kurtosis
Factor normal index threshold value, or the peak factor calculated be more than peak factor normal index threshold value when, then calculate analysis mould
Block sends pre-warning signal to vibration warning module, and vibration warning module receives after pre-warning signal responsive operation and indicates collection point
Analysis system 15 shows red early warning signal, and acquisition analysis system 15 also show the vibration data that vibrating sensor 9 detects, calculating
The kurtosis factor and peak factor gone out；When the kurtosis factor calculated is not more than kurtosis factor normal index threshold value and calculates
Peak factor vibrate warning module when being not more than peak factor normal index threshold value, then and do not work.
As shown in figure 3, also having wavelet de-noising unit 151, the band of telecommunication connection successively inside acquisition analysis system 15
Pass filtering unit 152, envelope signal processing unit 153 and fault diagnosis module 154, acquisition analysis system 15, which receives to come from, to shake
The vibration data of dynamic sensor 9, the vibration data progress that wavelet de-noising unit 151 is used to detect vibrating sensor 9 is adaptive
Answer threshold deniosing to handle and filter out HF noise signal data, bandpass filtering unit 152, which is received, comes from wavelet de-noising unit
Vibration data and sampling after 151 noise reductions extract the vibration data of a certain frequency range, and envelope signal processing unit 153 is received and come from
Handle in the vibration data and process envelope signal of a certain frequency range of bandpass filtering unit 152 and obtain envelope signal, while envelope is believed
Number processing unit 153 is used to envelope signal obtaining envelope frequency spectrum by processing, and the storage inside of fault diagnosis module 154 is faulty
Envelope frequency spectrum database, failure envelope frequency spectrum database includes the faulty envelope frequency spectrum of institute, and fault diagnosis module 154 is used for will bag
Network frequency spectrum is contrasted with the failure envelope frequency spectrum in failure envelope frequency spectrum database and draws the failure corresponding to envelope frequency spectrum
Failure situation and corresponding vibration data are transmitted to acquisition analysis system 11 and carried out pair by situation, fault diagnosis module 154
It should show.
As shown in Figure 1 and Figure 2, the heat emission hole of radiating erecting bed 1 includes several horizontal bar shaped heat emission holes 12 and several are erected
To bar shaped heat emission hole 13.
As shown in Figure 1 and Figure 2, several flat shims 6 are also set with bolt 5, all flat shims 6 are disposed in proximity to spiral shell
The bolt head side of bolt 5, all spring shims 7 are disposed in proximity to the side of nut 8.
As shown in figure 1, oblique in the heat-insulated dead slot 11 of radiating erecting bed 1 be connected with two oblique reinforcements 2.
It is welded and fixed as shown in figure 1, the circular arc of radiating erecting bed 1 installs end face 14 with the top of shell ring 4.
As shown in figure 1, sensor mounting hole 3 is located at the top position of sensor mounting hole 3.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of vibration monitor system for engine high-temperature casing, it is characterised in that：Including radiating erecting bed (1) and clip
Band (4), the shell ring (4) surrounds the round-shaped of non-closed, and shell ring (4) lower end has non-closed connection end
(41) bolt hole, is provided with non-closed connection end (41), coordinates in the bolt hole of non-closed connection end (41) and spiral shell is installed
Bolt (5), bolt (5) is connected through the bolt hole of non-closed connection end (41) with nut (8) matching thread, on the bolt (5)
It is set with several spring shims (7)；There is circular arc to install end face (14), the radiating for described radiating erecting bed (1) bottom
The circular arc of erecting bed (1) installs end face (14) with being fixedly connected at the top of shell ring (4), is opened in the middle part of the radiating erecting bed (1)
There is a heat-insulated dead slot (11), it is oblique in the heat-insulated dead slot (11) of the radiating erecting bed (1) to be connected with several oblique reinforcements
(2) several heat emission holes, are provided with the radiating erecting bed (1)；Sensor mounting hole is provided with the top of the radiating erecting bed (1)
(3), coordinate in the sensor mounting hole (3) and vibrating sensor (9) is installed, the vibrating sensor (9) passes through data wire
(10) it is connected with acquisition analysis system (15) telecommunication, the vibrating sensor (9) is used to detect shaking for engine high-temperature casing
The vibration data is simultaneously transferred in acquisition analysis system (15), the acquisition analysis system by dynamic data by data wire (10)
(15) internal to have computation analysis module and vibration warning module, the computation analysis module is used for according to vibrating sensor (9)
The vibration data detected is by calculating and drawing inside the kurtosis factor and peak factor, the computation analysis module have kurtosis
Factor data storehouse and peak factor database, kurtosis factor data stock contain kurtosis factor normal index value and the kurtosis factor
Normal index threshold value, peak factor database purchase has peak factor normal index value and peak factor normal index threshold value,
The computation analysis module by the kurtosis factor calculated, peak factor respectively with kurtosis factor normal index threshold value, peak value because
Sub- normal index threshold value is compared；When the kurtosis factor calculated is more than kurtosis factor normal index threshold value, or calculate
Peak factor be more than peak factor normal index threshold value when, then computation analysis module to vibration warning module send early warning letter
Number, vibration warning module receives after pre-warning signal responsive operation and indicates that acquisition analysis system (15) shows red early warning letter
Number, acquisition analysis system (15) also shows the vibration data that vibrating sensor (9) detects, the kurtosis factor calculated and peak value
The factor；The peak factor no more than peak for being not more than kurtosis factor normal index threshold value when the kurtosis factor calculated and calculating
When being worth factor normal index threshold value, then vibrate warning module and do not work.
2. according to the vibration monitor system for engine high-temperature casing described in claim 1, it is characterised in that：The collection
Analysis system (15) is internal also to have the wavelet de-noising unit (151) of telecommunication connection, bandpass filtering unit (152), bag successively
Network signal processing unit (153) and fault diagnosis module (154), the acquisition analysis system (15), which receives, comes from vibrating sensing
The vibration data of device (9), the vibration data that the wavelet de-noising unit (151) is used to detect vibrating sensor (9) is carried out
Adaptive threshold noise reduction process simultaneously filters out HF noise signal data, and bandpass filtering unit (152) reception comes from small
Vibration data and sampling after ripple noise reduction unit (151) noise reduction are extracted at the vibration data of a certain frequency range, the envelope signal
Reason unit (153) receives the vibration data for coming from bandpass filtering unit (152) a certain frequency range and handled by envelope signal
To envelope signal, while envelope signal processing unit (153) is used to envelope signal obtaining envelope frequency spectrum, the event by processing
Hinder the faulty envelope frequency spectrum database of diagnostic module (154) storage inside, failure envelope frequency spectrum database includes the faulty bag of institute
Network frequency spectrum, the fault diagnosis module (154) is used for the failure envelope frequency in envelope frequency spectrum and failure envelope frequency spectrum database
Spectrum is contrasted and draws the failure situation corresponding to envelope frequency spectrum, the fault diagnosis module (154) by failure situation and
Corresponding vibration data transmits to acquisition analysis system (11) and carries out correspondence display.
3. according to the vibration monitor system for engine high-temperature casing described in claim 1, it is characterised in that：The radiating
The heat emission hole of erecting bed (1) includes several horizontal bar shaped heat emission holes (12) and several vertical bar shaped heat emission holes (13).
4. according to the vibration monitor system for engine high-temperature casing described in claim 1 or 2 or 3, it is characterised in that：Institute
State and several flat shims (6) are also set with bolt (5), all flat shims (6) are disposed in proximity to the bolt head one of bolt (5)
Side, all spring shims (7) are disposed in proximity to nut (8) side.
5. according to the vibration monitor system for engine high-temperature casing described in claim 1, it is characterised in that：The radiating
It is oblique in the heat-insulated dead slot (11) of erecting bed (1) to be connected with two oblique reinforcements (2).
6. according to the vibration monitor system for engine high-temperature casing described in claim 1, it is characterised in that：The radiating
The circular arc of erecting bed (1) installs end face (14) with being welded and fixed at the top of shell ring (4).
7. according to the vibration monitor system for engine high-temperature casing described in claim 1, it is characterised in that：The sensing
Device mounting hole (3) is located at sensor mounting hole (3) top position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039431.4A CN107036703B (en) | 2016-11-21 | 2016-11-21 | Vibration monitor system for engine high-temperature casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039431.4A CN107036703B (en) | 2016-11-21 | 2016-11-21 | Vibration monitor system for engine high-temperature casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107036703A true CN107036703A (en) | 2017-08-11 |
| CN107036703B CN107036703B (en) | 2019-05-10 |
Family
ID=59530945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611039431.4A Active CN107036703B (en) | 2016-11-21 | 2016-11-21 | Vibration monitor system for engine high-temperature casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107036703B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108334661A (en) * | 2017-12-29 | 2018-07-27 | 武汉华中数控股份有限公司 | A kind of feed shaft thermal deformation prediction technique |
| CN109931485A (en) * | 2019-04-15 | 2019-06-25 | 中国船舶重工集团公司第七0三研究所 | A kind of vibration acceleration sensor bracket of band heat dissipation and heat insulating function |
| CN110823580A (en) * | 2019-11-12 | 2020-02-21 | 中国航发南方工业有限公司 | Vibration testing method for high-temperature turbine casing part of aircraft engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726413A (en) * | 2009-12-18 | 2010-06-09 | 北京工业大学 | Method of fault diagnosis on ball socketed bearing of steel-making converter by comprehensive analysis |
| JP2011252762A (en) * | 2010-06-01 | 2011-12-15 | Jfe Advantech Co Ltd | Method and device for monitoring bearing state |
| CN102798529B (en) * | 2012-08-30 | 2015-03-25 | 桂林电子科技大学 | Method and system for diagnosing bearing faults of large-size wind turbine bearing |
| CN104931262A (en) * | 2015-05-28 | 2015-09-23 | 北京康拓红外技术股份有限公司 | Bearing fault diagnosis device used in cooperation with wheel set bearing running-in machine and diagnosis method thereof |
| CN105765361A (en) * | 2013-11-25 | 2016-07-13 | 斯凯孚公司 | Bearing monitoring apparatus and method |
| KR20160109158A (en) * | 2015-03-10 | 2016-09-21 | (주)대주기계 | Machinery health monitering method |
-
2016
- 2016-11-21 CN CN201611039431.4A patent/CN107036703B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726413A (en) * | 2009-12-18 | 2010-06-09 | 北京工业大学 | Method of fault diagnosis on ball socketed bearing of steel-making converter by comprehensive analysis |
| JP2011252762A (en) * | 2010-06-01 | 2011-12-15 | Jfe Advantech Co Ltd | Method and device for monitoring bearing state |
| CN102798529B (en) * | 2012-08-30 | 2015-03-25 | 桂林电子科技大学 | Method and system for diagnosing bearing faults of large-size wind turbine bearing |
| CN105765361A (en) * | 2013-11-25 | 2016-07-13 | 斯凯孚公司 | Bearing monitoring apparatus and method |
| KR20160109158A (en) * | 2015-03-10 | 2016-09-21 | (주)대주기계 | Machinery health monitering method |
| CN104931262A (en) * | 2015-05-28 | 2015-09-23 | 北京康拓红外技术股份有限公司 | Bearing fault diagnosis device used in cooperation with wheel set bearing running-in machine and diagnosis method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108334661A (en) * | 2017-12-29 | 2018-07-27 | 武汉华中数控股份有限公司 | A kind of feed shaft thermal deformation prediction technique |
| CN108334661B (en) * | 2017-12-29 | 2021-08-06 | 武汉华中数控股份有限公司 | Feed shaft thermal deformation prediction method |
| CN109931485A (en) * | 2019-04-15 | 2019-06-25 | 中国船舶重工集团公司第七0三研究所 | A kind of vibration acceleration sensor bracket of band heat dissipation and heat insulating function |
| CN110823580A (en) * | 2019-11-12 | 2020-02-21 | 中国航发南方工业有限公司 | Vibration testing method for high-temperature turbine casing part of aircraft engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107036703B (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107036703A (en) | Vibration monitor system for engine high-temperature casing | |
| US9778080B2 (en) | Selective decimation and analysis of oversampled data | |
| US8930144B2 (en) | Method and apparatus for measuring data for injury analysis | |
| CN203490359U (en) | Portable transformer station noise imaging positioning detecting device | |
| CN106813714A (en) | The device and system of monitoring structural health conditions | |
| CN110160724A (en) | A kind of building aseismicity suspension and support performance state monitoring method | |
| CN108333472B (en) | Intelligent monitoring device, online monitoring system and method for looseness of contact net support | |
| CN103493113A (en) | Method for detecting potential falls and a fall detector | |
| CN102901560A (en) | Safe comprehensive monitoring system for structure of offshore jacket platform | |
| US10852180B2 (en) | Module with sensors arrangement | |
| CN207215437U (en) | A kind of ultrasonic wave stress detection device | |
| CN107192444A (en) | Intelligent output type vibration monitoring device and system and monitoring method including the device | |
| CN110873604A (en) | Transformer noise vibration on-line monitoring system | |
| CN111521141B (en) | Device and method for measuring three-dimensional thermal expansion displacement of pipeline | |
| CN105136278A (en) | Bearing system acoustic fault detection device | |
| CN110339641A (en) | Sound wave perceives intelligent electromagnetic pulse valve and electromagnetic impulse valve method for detecting abnormality | |
| CN110441632A (en) | Portable high-pressure shunt reactor fault detection means and method | |
| CN202255407U (en) | Environmental safety monitoring system capable of positioning by vibration and vibration sensing device | |
| CN103344943A (en) | Ultrasonic image positioning detecting device of transformer substation | |
| CN202947794U (en) | Acquisition testing device of vibration signal of body surface of transformer | |
| CN205176191U (en) | Transformer winding deformation test system | |
| CN104166152B (en) | A kind of detect particle accelerator line abnormal from triggering method | |
| CN206847822U (en) | A kind of multi-functional high-precision wall surface temperature measurement apparatus | |
| CN209100318U (en) | Tunnel blower safety monitoring system | |
| CN105782726A (en) | Novel system for monitoring stress fatigue of pipeline structure |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 610000 Sichuan Chengdu Economic and Technological Development Zone (Longquanyi District) 118 Aerospace North Road Applicant after: Sichuan Aerospace Zhongtian Power Equipment Co., Ltd. Address before: 610000 No. 118 Aerospace North Road, Longquanyi Town, Chengdu City, Sichuan Province Applicant before: Sichuan Dayu Special Vehicle Factory |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |