CN109060965A - Turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block - Google Patents
Turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block Download PDFInfo
- Publication number
- CN109060965A CN109060965A CN201810695399.8A CN201810695399A CN109060965A CN 109060965 A CN109060965 A CN 109060965A CN 201810695399 A CN201810695399 A CN 201810695399A CN 109060965 A CN109060965 A CN 109060965A
- Authority
- CN
- China
- Prior art keywords
- test block
- hole
- rectangle
- energy converter
- fan
- 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
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
Turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block, belong to material technical field of nondestructive testing, including rectangle test block, fan-shaped test block, semi-circular recesses, energy converter refraction angle measured hole and artificial defect reflection hole, rectangle test block and fan-shaped test block are an integral structure, the present invention, which is used, measures energy converter Front distance in the fan-shaped test block of stepped arrangement, adjusts detection system scanning speed；Energy converter refraction angle is measured using diameter phi 10mm circular hole, artificial defect reflector is debugged as detection system using 5 diameter phi 1mm, the hole depth 6mm, for verifying detection system scanning speed, it adjusts flaw detection sensitivity and draws distance gain size curve, 5 diameter phi 1mm, the hole depth 6mm are arranged by reference block length direction, not only it had been able to satisfy the demand of sensitivity adjustment range, but also has effectively reduced reference block, carrying and on-site test use more convenient.
Description
Technical field
The invention belongs to material technical field of nondestructive testing, a kind of turbine shaft has been specifically related to assembly fir-tree type leaf
Root longitudinal wave ultrasound examination dedicated reference test block.
Background technique
Thermal power generator develops towards large-sized unit, large capacity, high parameter direction at present.The size of steam turbine also accordingly adds
Greatly.The blade of steam turbine, blade root size also increase accordingly, and length of blade reaches 1 meter or more, blade root width also reach 300mm with
On.Steam turbine blade root type mainly has T-type, forked type, fir-tree type and bacterium shape blade root etc..Blade, blade root are born during military service
The corrosivity working environment of very big stress and torque, especially exhaust stage blade, easily generation stress corrosion cracking (SCC).Work as crackle
When size expansion is to limiting value, leads to blade, blade root fracture, gently then damage the dynamic and static blade of the whole of the machine, it is heavy then lead to machine
The great serious accident that people dies is ruined to occur.Therefore, it is imperative to the detection of steam turbine blade root to reinforce.The present invention be directed to axial directions
The research that the ultrasonic detection method of fir-tree root carries out is assembled, Fig. 1 shows the structural schematic diagram of fir-tree root.
So far, the detection of the type blade root is mainly with surface inspection magnetic powder or penetrant inspection and DL/T 714-
The ultrasonic surface wave inspection recommended in 2011 " turbine blade ultrasonic inspection techniques directive/guides ".Both detection methods itself
It is just defined as the defect on detection surface and near surface, the crackle generated inside blade root can not be detected.The position that blade root crackle generates
Be it is random, inside generate probability it is also very high.Since that there are width is larger for Generator Set blade root, the small equal spies of detection faces
Point, is shown in Fig. 2, and the purpose of complete detection is unable to reach according to conventional ultrasonic detection method.
Summary of the invention
The purpose of the present invention is being directed to the detection of high capacity high parameter steam turbine blade root crackle, due to Generator Set leaf
The features such as that there are width is larger for root, and detection faces are small is unable to reach complete detection according to conventional ultrasonic detection method, the present invention
In conjunction with turbine shaft to assembly fir-tree root ultrasonic compressional wave detecting method, a kind of turbine shaft is provided to assembly fir-tree type leaf
Root longitudinal wave ultrasound examination dedicated reference test block.
In order to achieve the above objectives, the present invention adopts the following technical scheme that: turbine shaft to assembly fir-tree root longitudinal wave
Ultrasound examination dedicated reference test block, feature is in, comprising: rectangle test block, fan-shaped test block, semi-circular recesses, energy converter folding
Firing angle measured hole and artificial defect reflection hole, the rectangle test block and fan-shaped test block are an integral structure, rectangle test block
The first side wall is detection faces, the second sidewall of rectangle test block and the first side wall face of rectangle test block, rectangle test block
4th side wall face of third side wall and rectangle test block；The sector test block is used to measure energy converter Front distance, adjustment inspection
Examining system scanning speed, the central angle of fan-shaped test block are 90 °, the first straight sidewalls of fan-shaped test block and the second of rectangle test block
Side wall is generally aligned in the same plane, and the second straight sidewalls of fan-shaped test block are generally aligned in the same plane with the third side wall of rectangle test block, fan
Shape test block is made of scallop and fan ring portion, and in stepped arrangement, the radius of scallop is 50mm for scallop and fan ring portion, fans ring
Plane where at the top of portion is lower than plane where at the top of scallop, and the inner circle radius for fanning ring portion is 50mm, exradius 100mm；
The cross section semicircular in shape of the semi-circular recesses, semi-circular recesses are located in rectangle test block, and semi-circular recesses are along rectangle
The length direction arrangement of test block, and it is isometric with rectangle test block；Energy converter refraction angle measured hole is for testing transducer folding
Firing angle degree, energy converter refraction angle measured hole are provided in rectangle test block, and energy converter refraction angle measured hole is diameter phi 10mm circle
Hole, and be through hole, the first side wall vertical range of the Kong Xinyu rectangle test block of energy converter refraction angle measured hole is 170mm；
The artificial defect reflection hole is arranged on semi-circular recesses, and artificial defect reflection hole is anti-as detection system debugging artificial defect
Beam, for verifying detection system scanning speed, adjustment flaw detection sensitivity and drafting distance gain size curve, artificial defect reflection hole
For blind hole, artificial defect reflection hole is diameter phi 1mm, the hole depth 6mm, and it is five that artificial defect, which reflects hole number, and five artificial
Defect reflection hole be located at same axis and it is equally spaced be arranged on semi-circular recesses, wherein close to rectangle test block second sidewall
The artificial defect reflection hole hole heart it is conllinear with the energy converter refraction angle measured hole hole heart.
The length of the rectangle test block is 200m, width 120mm.
The scallop and rectangle test block uniform thickness of the sector test block, with a thickness of 25mm.
The fan ring portion of the sector test block is with a thickness of 20mm.
The radius of the semi-circular recesses is 5mm.
The semi-circular recesses and the 4th side wall vertical range of rectangle test block are 10mm.
The vertical range of the second sidewall of the Kong Xinyu rectangle test block of energy converter refraction angle measured hole is 30mm, is changed
The third side wall vertical range of the Kong Xinyu rectangle test block of energy device refraction angle measured hole is 30mm.
The pitch-row in arbitrary neighborhood two artificial defect reflection holes is 40mm.
Close to the artificial defect reflection hole of rectangle test block the first side wall and the vertical range of rectangle test block the first side wall
For 10mm.
Through the above design, the present invention can be brought the following benefits: the present invention is used in stepped arrangement
Fan-shaped test block measures energy converter Front distance, adjusts detection system scanning speed；Energy converter is measured using diameter phi 10mm circular hole
Refraction angle, the hole are axially to assemble fir-tree type maximum blade root according to greater than current Large Steam Turbine Sets apart from detection faces 170mm
1.1 times or more of condition setting of width half.Meet under maximum blade root width conditions, energy converter refraction angle measures accurate
Degree and defect location precision, provide accurate foundation for subsequent defects assessment；Using 5 diameter phi 1mm, depth 6mm hole conduct
Detection system debugs artificial defect reflector, for verifying detection system scanning speed, adjustment flaw detection sensitivity and drafting distance
Amplitude curve, maximum adjusting range 170mm meet under maximum blade root width conditions, are enough respectively in blade root both sides of the face scanning
Cover entire predetermined detection range；5 diameter phi 1mm, the hole depth 6mm are arranged by reference block length direction, are both able to satisfy spirit
The demand of sensitivity adjusting range, and reference block is effectively reduced, it carries and on-site test uses more convenient, satisfaction test
The requirement of detection system is adjusted during room research and scene are actually detected.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description explanation does not constitute improper restriction of the invention for understanding the present invention, in the accompanying drawings:
Fig. 1 is structural schematic diagram of the existing turbine shaft to assembly fir-tree root；
Fig. 2 be existing turbine shaft to assembly fir-tree root assembling schematic diagram；
Fig. 3 is detection system distance gain size curve in the embodiment of the present invention；
Fig. 4 is test experiments example of the present invention, and diameter phi 1mm, depth 6mm hole back wave improve at sound path 175mm
14dB back reflection waveform；
Fig. 5 is that turbine shaft of the present invention shows to the structure of assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block
It is intended to；
Fig. 6 is the side view of Fig. 5；
Fig. 7 detection system adjustment of the present invention and distance gain size curve draw schematic diagram；
Fig. 8 is present invention detection implementation diagram.
In figure: the test block of 1- rectangle, the test block of 2- sector, 201- scallop, 202- fan ring portion, 3- semi-circular recesses, 4- are changed
It can device refraction angle measured hole, 5- artificial defect reflection hole, 6- energy converter.
Specific embodiment
Below with reference to embodiment and specific embodiment, the present invention is described in further detail.But this should not be understood
Range for present invention protection theme is only limitted to embodiment below, all to belong to this based on the technology that the content of present invention is realized
The range of invention.In order to avoid obscuring essence of the invention, well known method, process, process and element are chatted there is no detailed
It states.
In ultrasonic detecting technology, the method compared with known artificial reflector is generallyd use to determine that examined workpiece lacks
Positions and dimensions are fallen into, the development of ultrasonic detection technology is inseparable with designing and producing for reference block always.Therefore, it is necessary to be
Turbine shaft is detected a flaw to assembly fir-tree root ultrasonic compressional wave detecting method, the corresponding reference block of exploitation and composition with determining
Sensitivity and evaluation defect size, and integration test is carried out to the performance of instrument, energy converter 6 and detection system.Ultrasound examination
Test block is divided into reference block and reference block.Reference block is to make rule to material, shape, size and performance etc. by authoritative institution
Fixed and calibrating test block；Reference block is for test block as defined in certain detection method and certain specific specific test objects.
Reference block provided by the invention be turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block.
Detection method is summarized: blade, blade root subject very big stress and torque, especially final stage leaf during military service
The corrosivity working environment of piece, easily generation stress corrosion cracking (SCC).When crack size expands to limiting value, lead to blade, leaf
Root fracture gently then damages the dynamic and static blade of the whole of the machine, and great serious accident that is heavy then leading to fatal crass occurs.Therefore,
It is imperative to the detection of steam turbine blade root to reinforce.
Currently, this kind of blade root is mostly only with surface inspection and DL/T 714-2011, " turbine blade ultrasonic wave is examined
Test fire protection technology " in recommend inspection by Reyleigh wave.Both detection methods be inherently defined as detection surface and near surface lack
It falls into, the crackle generated for blade root inside can not detect.Blade root crackle generate position be it is random, inside generate can
Energy property is also very big.Therefore, the present invention proposes to use the ultrasonic detection method of small angle longitudinal wave, to the underbead crack to blade root
Carry out complete detection.Since that there are width is larger for Generator Set blade root, the features such as detection faces are small, it is detailed in Fig. 1 and Fig. 2, is pressed
The ultrasonic detection method of more solito is unable to reach the purpose of complete detection.For this problem, the present invention passes through axial assembly
Fir-tree root crackle longitudinal wave ultrasound examination mode is detected.
Energy converter 6 selects:
It is 3 °~10 ° of twin crystal small angle longitudinal wave energy converter 6, frequency that energy converter 6 for detection, which selects refraction angle,
2.5MHz~5MHz, piezoelectric chip is having a size of (3mm~7mm) × (4mm~8mm), focus 80mm, it is contemplated that detection faces compared with
Energy converter 6 that is small, as should selecting outer dimension small as possible.Although if using the monocrystalline longitudinal wave ultrasonic transducer of same angle
It can satisfy the requirement of detection sound path, but when with the diameter phi 1mm of the half of 150mm~170mm Large-scale machine set blade root width, depth
When spending the hole 6m as reference sensitivity, there are near-field resolution power is low, the big deficiency in blind area.And due to the cross along detection direction blade root
It is smaller to size, end corner reflection and side wall interference occurs, generates a large amount of clutter reflections, flaw echo is difficult to differentiate.Therefore, originally
Invention uses twin crystal small angle longitudinal wave energy converter 6, based on the mode that the hair of twin crystal energy converter one one is received, effectively eliminates organic glass
The reflection clutter of glass and steel interface.Again since initial pulse does not enter amplifier always, choking phenomenon is overcome, keeps flaw detection blind area big
It is big to reduce, also there is very high recall rate near surface flaw.By changing the deflection angle of chip, ideal focus also can get
Distance.6 focus of energy converter of the invention is chosen at 80mm.Figure is detailed in it can be seen from detection system adjustment distance gain size curve
3, the diameter phi 1mm of small sound path, the hole depth 6mm reflected echo pattern are single；When sound path 175mm, diameter phi 1mm, the reflection of the hole depth 6mm
Wave improves 14dB, does not also occur mixed and disorderly back wave after initial pulse wave, is detailed in Fig. 4.
Turbine shaft as shown in Figures 5 and 6 is wrapped to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block
It includes: rectangle test block 1, fan-shaped test block 2, semi-circular recesses 3, energy converter refraction angle measured hole 4 and artificial defect reflection hole 5, institute
It states rectangle test block 1 and fan-shaped test block 2 is an integral structure, the first side wall of rectangle test block 1 is detection faces, rectangle test block
The of the first side wall face of 1 second sidewall and rectangle test block 1, the third side wall of rectangle test block 1 and rectangle test block 1
Four side wall faces；The sector test block 2 is used to measure 6 Front distance of energy converter, adjusts detection system scanning speed, fan-shaped test block
2 central angle is 90 °, and the first straight sidewalls of fan-shaped test block 2 and the second sidewall of rectangle test block 1 are generally aligned in the same plane, fan
Second straight sidewalls of shape test block 2 are generally aligned in the same plane with the third side wall of rectangle test block 1, and fan-shaped test block 2 is by scallop 201
It is formed with fan ring portion 202, in stepped arrangement, the radius of scallop 201 is 50mm for scallop 201 and fan ring portion 202, fans ring portion
Plane where 202 tops is lower than plane where 201 top of scallop, and the inner circle radius of fan ring portion 202 is 50mm, exradius is
100mm；The cross section semicircular in shape of the semi-circular recesses 3, semi-circular recesses 3 are located in rectangle test block 1, semi-circular recesses
3 arrange along the length direction of rectangle test block 1, and isometric with rectangle test block 1；Energy converter refraction angle measured hole 4 is used to
6 refraction angle of testing transducer, energy converter refraction angle measured hole 4 are provided in rectangle test block 1, energy converter refraction angle measured hole
4 be diameter phi 10mm circular hole, and is through hole, the first side wall of the Kong Xinyu rectangle test block 1 of energy converter refraction angle measured hole 4
Vertical range is 170mm；The artificial defect reflection hole 5 is arranged on semi-circular recesses 3, and artificial defect reflection hole 5 is as inspection
Examining system debugs artificial defect reflector, and for verifying detection system scanning speed, adjustment flaw detection sensitivity and drafting are apart from wave
Width curve, artificial defect reflection hole 5 are blind hole, and artificial defect reflection hole 5 is diameter phi 1mm, the hole depth 6mm, and artificial defect is anti-
5 quantity of perforation be five, five artificial defect reflection holes 5 be located at same axis and it is equally spaced be arranged on semi-circular recesses 3,
It is wherein total close to the 5 hole heart of artificial defect reflection hole of 1 second sidewall of rectangle test block and the 4 hole heart of energy converter refraction angle measured hole
Line.
The length of the rectangle test block 1 is 200m, width 120mm.
The scallop and 1 uniform thickness of rectangle test block of the sector test block 2, with a thickness of 25mm.
The fan ring portion of the sector test block 2 is with a thickness of 20mm.
The radius of the semi-circular recesses 3 is 5mm.
The semi-circular recesses 3 and the 4th side wall vertical range of rectangle test block 1 are 10mm.
The vertical range of the second sidewall of the Kong Xinyu rectangle test block 1 of energy converter refraction angle measured hole 4 is 30mm,
The third side wall vertical range of the Kong Xinyu rectangle test block 1 of energy converter refraction angle measured hole 4 is 30mm.
The pitch-row in arbitrary neighborhood two artificial defect reflection holes 5 is 40mm.
Close to 1 the first side wall of rectangle test block artificial defect reflection hole 5 it is vertical with 1 the first side wall of rectangle test block away from
From for 10mm.
Detection system adjustment:
Detection system selects A type pulse reflection reflectoscope；
Set-up procedure:
A. 6 Front distance of energy converter is determined with sector test block 2, and adjusts scanning speed；
B. the first side wall of rectangle test block 1 carries out scanning from reference block, and diameter 10mm circular hole is made to reflect wave reflection
Equivalent reaches maximum, calculates 6 refraction angle of energy converter；
C. scanning speed is verified, and draws distance gain size curve using diameter phi 1mm, the hole depth 6mm in reference block,
Fig. 7 is shown in middle detection system adjustment signal.
Scanning mode:
Axial assembly fir-tree root has two kinds of forms of straight tooth-shaped and arc.
A. 160mm straight tooth-shaped blade root is less than for width, detection can be completed using unilateral scanning；
B. 160mm straight-tooth arc blade root and arc blade root are greater than for width, using bilateral scanning, branch completes whole leaves
The detection of root.
Two kinds of scanning mode detection faces select to be exposed at the position outside wheel rim in blade root, are detailed in Fig. 8.Complete detection system
After system adjustment, energy converter 6 is placed at impeller side blade root, mobile radially to direction blade from bottom, moving process is left
Right torsional transducer 6, emphasis check the first and second root portion.If back wave without exception occurs, it is determined as qualification；If reflecting
Wave, and reflect equivalent and be more than or equal to diameter phi 1mm, the reflection of the hole depth 6mm, then it is determined as unqualified.The detection method is by examination
Test room and live actually detected verifying, it was confirmed that the correctness and practicability of detection method.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, made any modification equivalent replacement, improvement etc., should be included in guarantor of the invention
Within the scope of shield.
Claims (9)
1. turbine shaft is to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block, feature is in, comprising: rectangle
Test block (1), fan-shaped test block (2), semi-circular recesses (3), energy converter refraction angle measured hole (4) and artificial defect reflection hole (5), institute
It states rectangle test block (1) and fan-shaped test block (2) is an integral structure, the first side wall of rectangle test block (1) is detection faces, rectangular
The second sidewall of shape test block (1) and the first side wall face of rectangle test block (1), the third side wall and length of rectangle test block (1)
4th side wall face of rectangular test block (1)；The sector test block (2) is used to measure energy converter (6) Front distance, adjusts detection system
System scanning speed, the central angle of fan-shaped test block (2) are 90 °, the first straight sidewalls of fan-shaped test block (2) and rectangle test block (1)
Second sidewall be generally aligned in the same plane, the second straight sidewalls of fan-shaped test block (2) and the third side wall of rectangle test block (1) are located at
Same plane, fan-shaped test block (2) are made of scallop (201) and fan ring portion (202), and scallop (201) and fan ring portion (202) are in
Step type arrangement, the radius of scallop (201) are 50mm, and plane is lower than at the top of scallop (201) where fan ring portion (202) top
Place plane, fan ring portion (202) inner circle radius be 50mm, exradius 100mm；The semi-circular recesses (3) it is transversal
Face semicircular in shape, semi-circular recesses (3) are located on rectangle test block (1), length of the semi-circular recesses (3) along rectangle test block (1)
Direction arrangement is spent, and isometric with rectangle test block (1)；Energy converter refraction angle measured hole (4) is for testing transducer (6) folding
Firing angle degree, energy converter refraction angle measured hole (4) are provided on rectangle test block (1), and energy converter refraction angle measured hole (4) is diameter
φ 10mm circular hole, and be through hole, the first side wall of the Kong Xinyu rectangle test block (1) of energy converter refraction angle measured hole (4) hangs down
Straight distance is 170mm；The artificial defect reflection hole (5) is arranged on semi-circular recesses (3), and artificial defect reflection hole (5) is made
Debug artificial defect reflector for detection system, for verifying detection system scanning speed, adjustment flaw detection sensitivity and draw away from
From amplitude curve, artificial defect reflection hole (5) is blind hole, and artificial defect reflection hole (5) is diameter phi 1mm, the hole depth 6mm, people
Work defect reflection hole (5) quantity be five, five artificial defect reflection holes (5) be located at same axis and it is equally spaced be arranged in partly
On circular groove (3), wherein artificial defect reflection hole (5) the Kong Xinyu energy converter close to rectangle test block (1) second sidewall is rolled over
Firing angle measured hole (4) hole heart is conllinear.
2. turbine shaft according to claim 1 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: the length of the rectangle test block (1) is 200m, width 120mm.
3. turbine shaft according to claim 2 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: the scallop and rectangle test block (1) uniform thickness of the sector test block (2), with a thickness of 25mm.
4. turbine shaft according to claim 3 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: the fan ring portion of the sector test block (2) is with a thickness of 20mm.
5. turbine shaft according to claim 4 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: the radius of the semi-circular recesses (3) is 5mm.
6. turbine shaft according to claim 5 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: the 4th side wall vertical range of the semi-circular recesses (3) and rectangle test block (1) is 10mm.
7. turbine shaft according to claim 6 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: the vertical range of the second sidewall of the Kong Xinyu rectangle test block (1) of energy converter refraction angle measured hole (4)
For 30mm, the third side wall vertical range of the Kong Xinyu rectangle test block (1) of energy converter refraction angle measured hole (4) is 30mm.
8. turbine shaft according to claim 7 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: the pitch-row of arbitrary neighborhood two artificial defect reflection holes (5) is 40mm.
9. turbine shaft according to claim 8 to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block,
It is characterized by: artificial defect reflection hole (5) and (1) first side of rectangle test block close to rectangle test block (1) the first side wall
The vertical range of wall is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695399.8A CN109060965B (en) | 2018-06-29 | 2018-06-29 | Special reference test block for ultrasonic detection of longitudinal wave of fir-type blade root axially assembled by steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810695399.8A CN109060965B (en) | 2018-06-29 | 2018-06-29 | Special reference test block for ultrasonic detection of longitudinal wave of fir-type blade root axially assembled by steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109060965A true CN109060965A (en) | 2018-12-21 |
| CN109060965B CN109060965B (en) | 2023-08-22 |
Family
ID=64818332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810695399.8A Active CN109060965B (en) | 2018-06-29 | 2018-06-29 | Special reference test block for ultrasonic detection of longitudinal wave of fir-type blade root axially assembled by steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109060965B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2569217A1 (en) * | 2005-12-19 | 2007-06-19 | Weyerhaeuser Company | Methods for adjusting stress wave velocity-based predictions of lumber stiffness and warp propensity of a timber-based raw material group |
| CN102156166A (en) * | 2011-04-08 | 2011-08-17 | 东北电力科学研究院有限公司 | Ultrasonic climbing wave detection method for laterally assembled fir tree blade root of steam turbine and special probe for method |
| CN103698399A (en) * | 2013-12-19 | 2014-04-02 | 国家电网公司 | Ultrasonic imaging detection method for blade fir-type root of turbine |
| CN104122328A (en) * | 2014-07-22 | 2014-10-29 | 国家电网公司 | Reference test block for detecting high-voltage strut porcelain insulator ultrasonic phased array |
| CN105445374A (en) * | 2015-12-30 | 2016-03-30 | 中核核电运行管理有限公司 | Ultrasonic phased array detection method for fir type blade roots of nuclear main turbine |
| CN208283339U (en) * | 2018-06-29 | 2018-12-25 | 中国能源建设集团科技发展有限公司 | Turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block |
-
2018
- 2018-06-29 CN CN201810695399.8A patent/CN109060965B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2569217A1 (en) * | 2005-12-19 | 2007-06-19 | Weyerhaeuser Company | Methods for adjusting stress wave velocity-based predictions of lumber stiffness and warp propensity of a timber-based raw material group |
| CN102156166A (en) * | 2011-04-08 | 2011-08-17 | 东北电力科学研究院有限公司 | Ultrasonic climbing wave detection method for laterally assembled fir tree blade root of steam turbine and special probe for method |
| CN103698399A (en) * | 2013-12-19 | 2014-04-02 | 国家电网公司 | Ultrasonic imaging detection method for blade fir-type root of turbine |
| CN104122328A (en) * | 2014-07-22 | 2014-10-29 | 国家电网公司 | Reference test block for detecting high-voltage strut porcelain insulator ultrasonic phased array |
| CN105445374A (en) * | 2015-12-30 | 2016-03-30 | 中核核电运行管理有限公司 | Ultrasonic phased array detection method for fir type blade roots of nuclear main turbine |
| CN208283339U (en) * | 2018-06-29 | 2018-12-25 | 中国能源建设集团科技发展有限公司 | Turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109060965B (en) | 2023-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104535648B (en) | A kind of turbine blade ultrasonic guided wave detecting method | |
| CN104849349A (en) | Method for detecting weld seam of thin-wall small diameter tube by adopting phased array ultrasonic combination technology | |
| CN103292753A (en) | Method of measuring thickness of thermal barrier coating by ultrasonic water-immersion focusing technology | |
| CN101923074B (en) | Ultrasonic detection method of ultrahigh-strength steel thin-wall spinning cylinder | |
| CN109060956A (en) | Turbine shaft to assembly fir-tree root longitudinal wave ultrasonic detection method | |
| CN103698399A (en) | Ultrasonic imaging detection method for blade fir-type root of turbine | |
| CN109374755B (en) | Ultrasonic detection method for stainless steel oil pipe weld joint and standard test block | |
| CN106383176B (en) | A kind of production method of maximum intensity surface wave | |
| CN113311066A (en) | Steam turbine rotor rim reverse T-shaped blade root groove phased array ultrasonic longitudinal wave detection method | |
| CN208283339U (en) | Turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block | |
| CN114755298A (en) | Method for detecting internal cracks of action rod of turnout switch machine based on ultrasonic technology | |
| CN109060965A (en) | Turbine shaft to assembly fir-tree root longitudinal wave ultrasound examination dedicated reference test block | |
| Russell et al. | Inspection of components with irregular surfaces using a conformable ultrasonic phased array | |
| CN205015313U (en) | Small -bore pipe rolling defect ultrasonic transducer and supporting test block of using | |
| Xi et al. | Simulation and performance study of circular ultrasonic array for tubes’ internal inspection | |
| CN1138699A (en) | Supersonic testing method for butt welding seam of narrow-bore tube | |
| CN105116057B (en) | Small-bore pipe rolling defect ultrasonic probe and matching used test block | |
| Davis et al. | Resolving capabilities of phased array sectorial scans (S-scans) on diffracted tip signals | |
| Xiao et al. | Investigation of ultrasonic NDT for small diameter and thin-wall tube | |
| CN213423074U (en) | Ultrasonic inspection reference test block for cover shearing equipment of blasting valve | |
| Zhou et al. | Research on Phased Array Ultrasonic Testing for the Girth Weld of 4mm~ 10mm Austenitic Stainless Steel Pipeline | |
| Karpelson | Tube Inspection Using Angle Ultrasonic Probes | |
| Si et al. | CIVA Simulation and Experiment Verification for Thin-Walled Small-Diameter Pipes by Using Phased Array Ultrasonic Testing | |
| CN103217486B (en) | Angle probe ultrasonic field transverse sound pressure distribution measuring method | |
| CN212341116U (en) | Reference block for detecting narrow gap welding butt weld |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |