CN205785127U - The in-service on-the-spot contact ultrasonic thickness measurement device of gas turbine hot passage parts thermal barrier coating - Google Patents
The in-service on-the-spot contact ultrasonic thickness measurement device of gas turbine hot passage parts thermal barrier coating Download PDFInfo
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- CN205785127U CN205785127U CN201620716522.6U CN201620716522U CN205785127U CN 205785127 U CN205785127 U CN 205785127U CN 201620716522 U CN201620716522 U CN 201620716522U CN 205785127 U CN205785127 U CN 205785127U
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- barrier coating
- thermal barrier
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- gas turbine
- thickness measurement
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- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The utility model discloses the in-service on-the-spot contact ultrasonic thickness measurement device of a kind of gas turbine hot passage parts thermal barrier coating, including ultrasonic probe, impulse ejection receptor and data collecting card；Wherein, during duty, ultrasonic probe is arranged on the surface of thermal barrier coating sample, and ultrasonic probe is connected with the input of data collecting card by impulse ejection receptor.The ultrasonic longitudinal wave vertical incidence that this device produces is in thermal barrier coating double-decker, reflection echo is produced at probe delay block/heat-barrier coating ceramic layer, heat-barrier coating ceramic layer/tack coat, tack coat/matrix alloy interface, by measuring each interface reflection echo time difference, after be multiplied by each layer caliper velocity and can try to achieve heat-barrier coating ceramic layer and adhesive layer thickness value.This utility model is simple to operation, equipment is the most portable, measurement data accurately and reliably, it is adaptable to on-the-spot In-service testing, there is great economic benefit and social benefit.
Description
Technical field:
This utility model belongs to ultrasonic non-destructive inspection techniques field, and specifically a kind of gas turbine hot passage parts thermal boundary is coated with
The in-service on-the-spot contact ultrasonic thickness measurement device of layer.
Background technology:
Thermal barrier coating is presently the most one of high-temperature protection coating of advanced person, has good effect of heat insulation and non-oxidizability
Can, it is widely used in gas turbine hot passage parts (such as turbine blade, combustor etc.) surfacecti proteon.Thermal barrier coating is general
For double-decker, being made up of top layer ceramic layer and underlying metal tack coat, wherein thickness is the key characterizing thermal barrier coating quality
Technical specification, it is related to assessment and the meter of the service life of coating, bond strength, uneven internal stress and manufacturing cost etc.
Calculate.Therefore, thickness measure is the key technique in thermal barrier coating manufacture and military service Damage Evaluation, and at present, thermal barrier coating is thick
Degree measuring method includes damaging and Non-Destructive Testing two kinds, wherein damages detection and is sampling destructive test, and destroying back part cannot
It is continuing with, and measurement data is more unilateral, it is impossible to effectively reflect the coating layer thickness level of all parts.Non-Destructive Testing refers to not
On the premise of destroying parts, the technological means that coating layer thickness is accurately detected.Wherein thermal barrier coating thickness Non-Destructive Testing skill
Art mainly has eddy-current method, infrared method and supercritical ultrasonics technology etc..Eddy-current method is to characterize on non-magnetic matrix metal non-by Lift-off effect
Conductive covering layer thickness, the method is affected bigger by tack coat characteristic；Infrared method is to utilize external heat to encourage thermal barrier coating portion
Part carries out active heating, and extracting parts surface temperature variation characteristic information characterizes thermal barrier coating thickness, and the method is easily by ring
The factor impacts such as border noise, coating surface situation, measurement error is bigger；Supercritical ultrasonics technology is by analyzing ultrasonic pulse in coating
Outer boundary reflection echo characteristic characterizes coating layer thickness, the conventional water immersion focusing ultrasonic pulse technology for detection thermal barrier coating of general employing
Thickness, due to pulse width used compared with big, coating layer thickness is thin and longitudinal wave velocity is relatively big, causes water/coating, coating/parent metal
Interface reflection echo is aliasing in together, and time-domain signal is difficult to, and need to read two adjacent resonant frequencies in frequency-region signal and calculate
Coating layer thickness, owing to resonant frequency interference factor is more, accuracy of measurement is difficult to ensure that, and step is complicated.Meanwhile, water immersion focusing
Need to carry out thermal barrier coating parts removing detection, be not suitable for on-the-spot in-service original position thickness measuring.
In sum, how gas turbine hot passage parts thermal barrier coating thickness is realized on-the-spot in-service original position quick, accurate
Really detection, and equipment easily operates, practical be current urgent problem.
Utility model content:
The purpose of this utility model be for current gas turbine hot passage parts thermal barrier coating Thickness sensitivity exist upper
State deficiency, it is provided that the in-service on-the-spot contact ultrasonic thickness measurement device of a kind of gas turbine hot passage parts thermal barrier coating, this device
Simple to operation, equipment is the most portable, measurement data accurately and reliably, it is adaptable to on-the-spot In-service testing.
For reaching above-mentioned purpose, this utility model adopts the following technical scheme that and realizes:
The in-service on-the-spot contact ultrasonic thickness measurement device of gas turbine hot passage parts thermal barrier coating, including ultrasonic probe, arteries and veins
Rush transceiver and data collecting card；Wherein,
During duty, ultrasonic probe is arranged on the surface of thermal barrier coating sample, and ultrasonic probe is connect by impulse ejection
Receive device to be connected with the input of data collecting card.
This utility model is further improved by, and also includes industrial computer, its outfan phase with data collecting card
Even.
This utility model is further improved by, and ultrasonic probe includes the housing of one end open, is arranged on shell nozzle
The entrant sound delay block of end, and be positioned at housing and be successively set on the acoustic lens on entrant sound delay block, piezoelectric membrane from bottom to top
And damping block, wherein, piezoelectric membrane is connected with the joint being arranged on outside housing by cable.
This utility model is further improved by, and entrant sound delay block uses lucite to make, and acoustic lens uses blue precious
One-tenth made of stones, damping block uses tungsten powder resin compound to make, and housing uses aluminium alloy to make.
This utility model is further improved by, and joint is radio frequency (RF) coaxial connector.
This utility model is further improved by, and piezoelectric membrane is the ZnO film using high-frequency sputtering to make.
This utility model is further improved by, and cable is copper conductor.
This utility model is further improved by, and impulse ejection receptor is digital wide tape pulse transceiver,
For excitation ultrasound probe and the ultrasonic echo of reception ultrasonic probe.
This utility model is further improved by, and data collecting card is multifunction supersonic data collecting card.
Compared with prior art, this utility model has a following beneficial effect:
The beneficial effects of the utility model are:
1), this utility model provides a kind of gas turbine hot passage parts thermal barrier coating in-service on-the-spot contact ultrasonic thickness measurement
Device, overcomes existing conventional water immersion focusing ultrasonic pulse technology for detection thermal barrier coating thickness Time-frequency Spectrum Analysis complicated, resonance frequency
Rate poor accuracy and water immersion focusing equipment need to be used, it is impossible to realize the shortcomings such as parts scene In-service testing.
2), this utility model use delay block contact focusing probe, not only can obtain high-energy focused sound waves but also can avoid beginning
Ripple check frequency.
3), this utility model combines digital wideband pulse transceiver and the detection of multifunction supersonic data collecting card is
System, it is ensured that signals collecting, display non-distorted, simultaneously high s/n ratio, high gain system ensures the reflection letter faint to coating interface
Number effective reception, the accurate measurement of thermal barrier coating thickness can be realized.
4), this utility model simple to operate understandable, equipment is the most portable, measurement data accurately and reliably, applied range, tool
There are bigger economic benefit and social benefit.
Accompanying drawing illustrates:
Fig. 1 is the in-service on-the-spot contact ultrasonic thickness measurement installation drawing of thermal barrier coating.
Fig. 2 is the structure chart of ultrasonic probe.
Fig. 3 thermal barrier coating thickness measuring oscillogram.
In Fig. 1: 1, thermal barrier coating sample, 2, ultrasonic probe, 3, impulse ejection receptor, 4, data collecting card, 5, industry control
Computer.
In Fig. 2: 201, entrant sound delay block, 202, acoustic lens, 203, damping block, 204, housing, 205, joint, 206, piezoelectricity
Thin film, 207, cable.
Detailed description of the invention:
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with referring to the drawings, to this
Utility model further describes.
Referring to the drawings 1, the in-service on-the-spot contact of gas turbine hot passage parts thermal barrier coating that this utility model provides surpasses
Sound measuring thickness device, including ultrasonic probe 2, contacts focusing probe for delay block, and mid frequency is 100MHz, is used for realizing electro acoustic
The mutual conversion of signal；Impulse ejection receptor 3, for digital wide tape pulse transceiver, emitter maximum excitation frequency
It is 5～500MHz for 375MHz, receptor maximum bandwidth；Multifunction supersonic data collecting card 4, sample frequency 4GHz, can be by mould
Intend the signal of telecommunication and be converted into digital signal, and signal is processed；Industrial computer 5, is used for receiving ultrasound data acquisition card and passes
Defeated data.During duty, ultrasonic probe 2 is arranged on the surface of thermal barrier coating sample 1, and ultrasonic probe 2 is sent out by pulse
Penetrate receptor 3 to be connected with the input of data collecting card 4, wherein, thermal barrier coating sample 1, for double-decker, use air etc. from
Son spraying is made, and surface ceramic layer thickness is about 300～350 μm, and internal layer adhesive layer thickness is about 100～150 μm；
Referring to the drawings 2, ultrasonic probe 2 of the present utility model includes entrant sound delay block 201, makes for lucite；Sound is saturating
Mirror 202, makes for sapphire；Damping block 203, makes for tungsten powder epoxy resin composition；Housing 204, makes for aluminium alloy；Connect
205, for radio frequency (RF) coaxial connector；Piezoelectric membrane 206, the ZnO film made for high-frequency sputtering；Cable 207, for copper conductor
Make.
The in-service on-the-spot contact ultrasonic thickness measurement of gas turbine hot passage parts thermal barrier coating using this utility model to provide
When device carries out thermal barrier coating Thickness sensitivity, include step in detail below:
The first step: heat-barrier coating ceramic layer, the tack coat ultrasonic longitudinal wave velocity of sound are demarcated.In thermal barrier coating velocity of sound calibration sample
Uniformly coat special couplant, delay block is contacted focusing probe and is vertically arranged on it, Sensor for detecting small movemeats, treat that screen signal is stable,
Mobile cursor, as it is shown on figure 3, read probe delay block and heat-barrier coating ceramic layer interface reflection echo signal S1, record the time
For T1；Read heat-barrier coating ceramic layer and tie-layer interface reflection echo signal S2, the record time is T2；Reading thermal barrier coating glues
Knot layer and parent metal interface reflection echo signal S3, the record time is T3.Known calibration sample heat-barrier coating ceramic layer thickness is
H1, adhesive layer thickness is H2, then calculate: heat-barrier coating ceramic layer ultrasonic longitudinal wave velocity of sound VL1=H1/(T2-T1), tack coat is ultrasonic
Longitudinal wave velocity VL2=H2/(T3-T2)。
Second step: heat-barrier coating ceramic layer, adhesive layer thickness are tested.On thermal barrier coating sample to be tested, uniformly coating is special
Couplant, contacts delay block focusing probe and is vertically arranged on it, Sensor for detecting small movemeats, treats that screen signal is stable, and mobile cursor reads
Probe delay block and heat-barrier coating ceramic layer interface reflection echo signal S1, the record time is T1；Read heat-barrier coating ceramic layer with
Tie-layer interface reflection echo signal S2, the record time is T2；Read heat barrier coating bonding layer and parent metal interface reflection echo
Signal S3, the record time is T3.Then calculate: the heat-barrier coating ceramic layer thickness of sample to be tested is H3=VL1×(T2-T1), viscous
Knot layer thickness is H4=VL2×(T3-T2)。
Claims (9)
1. the in-service on-the-spot contact ultrasonic thickness measurement device of gas turbine hot passage parts thermal barrier coating, it is characterised in that include surpassing
Sonic probe (2), impulse ejection receptor (3) and data collecting card (4)；Wherein,
During duty, ultrasonic probe (2) is arranged on the surface of thermal barrier coating sample (1), and ultrasonic probe (2) is sent out by pulse
Penetrate receptor (3) to be connected with the input of data collecting card (4).
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 1
Putting, it is characterised in that also include industrial computer (5), it is connected with the outfan of data collecting card (4).
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 1
Put, it is characterised in that ultrasonic probe (2) includes the housing (204) of one end open, is arranged on the entrant sound of housing (204) opening
Delay block (201), and it is positioned at the acoustic lens that housing (204) is successively set on entrant sound delay block (201) from bottom to top
(202), piezoelectric membrane (206) and damping block (203), wherein, piezoelectric membrane (206) is by cable (207) and is arranged on shell
Body (204) joint (205) outward is connected.
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 3
Putting, it is characterised in that entrant sound delay block (201) uses lucite to make, acoustic lens (202) uses sapphire to make, damping
Block (203) uses tungsten powder resin compound to make, and housing (204) uses aluminium alloy to make.
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 3
Put, it is characterised in that joint (205) is radio frequency (RF) coaxial connector.
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 3
Put, it is characterised in that piezoelectric membrane (206) is the ZnO film using high-frequency sputtering to make.
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 3
Put, it is characterised in that cable (207) is copper conductor.
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 1
Put, it is characterised in that impulse ejection receptor (3) is digital wide tape pulse transceiver, pop one's head in (2) for excitation ultrasound
With the ultrasonic echo receiving ultrasonic probe (2).
The in-service on-the-spot contact ultrasonic thickness measurement dress of gas turbine hot passage parts thermal barrier coating the most according to claim 1
Put, it is characterised in that data collecting card (4) is multifunction supersonic data collecting card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716522.6U CN205785127U (en) | 2016-07-07 | 2016-07-07 | The in-service on-the-spot contact ultrasonic thickness measurement device of gas turbine hot passage parts thermal barrier coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716522.6U CN205785127U (en) | 2016-07-07 | 2016-07-07 | The in-service on-the-spot contact ultrasonic thickness measurement device of gas turbine hot passage parts thermal barrier coating |
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| Publication Number | Publication Date |
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| CN205785127U true CN205785127U (en) | 2016-12-07 |
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| CN201620716522.6U Expired - Fee Related CN205785127U (en) | 2016-07-07 | 2016-07-07 | The in-service on-the-spot contact ultrasonic thickness measurement device of gas turbine hot passage parts thermal barrier coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362238A (en) * | 2018-03-16 | 2018-08-03 | 苏州易昇光学材料有限公司 | A kind of detection device for solar panels coating |
-
2016
- 2016-07-07 CN CN201620716522.6U patent/CN205785127U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362238A (en) * | 2018-03-16 | 2018-08-03 | 苏州易昇光学材料有限公司 | A kind of detection device for solar panels coating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20180707 |