CN204989109U - Integrated voussoir phased array probe combination of one set of nondestructive test fir type blade root - Google Patents
Integrated voussoir phased array probe combination of one set of nondestructive test fir type blade root Download PDFInfo
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- CN204989109U CN204989109U CN201520765135.7U CN201520765135U CN204989109U CN 204989109 U CN204989109 U CN 204989109U CN 201520765135 U CN201520765135 U CN 201520765135U CN 204989109 U CN204989109 U CN 204989109U
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- 239000000523 sample Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims description 16
- 238000009659 non-destructive testing Methods 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000010408 sweeping Methods 0.000 abstract description 13
- 238000007689 inspection Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 101100333320 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) end-3 gene Proteins 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Integrated voussoir phased array probe combination of one set of nondestructive test fir type blade root, including the 0 compressional wave phased array probe that is used for sweeping the fir type of looking into blade root platform, the shear wave side that is used for sweeping the fir type of looking into blade root blade outer arc and inner arc be qualified for the next round of competitions phased array probe, be used for sweeping the ejecting line phased array probe of shear wave of the fir type of looking into blade root platform and terminal surface, shear wave side be qualified for the next round of competitions phased array probe with the ejecting line phased array probe of shear wave adopts integrated voussoir. The utility model discloses a different sonic propagation modes, adopt the combined method to the different positions of blade root, the different degree of depth, not equidirectional sweeping look into, detect more comprehensively to the inside tooth root of fir type blade root, can contain positions of all key inspections, and the size design is nimble small and exquisite, under the circumstances of not dismantling the blade root, can sweep the survey of checking, the clamping of looking into anchor clamps is conveniently swept to the both sides screw hole to carry out in the blade root lateral surface and look into than sweeping of putting of deep -seated, look into the device cooperation and realize automatic sweeping and look into with automatic sweeping simultaneously.
Description
Technical field
The utility model relates to piezoelectric ultrasonic transducer field, is specifically related to the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root.
Background technology
In recent years, electric power industry development is swift and violent, and high parameter, Large Copacity, high efficiency Large-scale machine set have progressively become main force's unit of generating.In these Large-scale machine set; the blade root of Low Pressure Steam Turbine final stage, second last stage blade adopts fir shape pattern more and more; in the process of open at unit, shutting down, the stressing conditions of blade root position is complicated; easily produce Dangerous defect at blade root position; blade root position is finally caused to be ruptured; make unit by forced-stopping machine, cause heavy economic losses.
Phased-array technique, as a kind of up-to-date ultrasonic detecting technology, has and detects flexibly, fast, can carry out complicated shape detection and the advantage such as reliability is strong, be widely used in just more and more now in the industries such as aviation, petrochemical industry, electric power.Compared with surpassing probe with traditional A, phased array probe has the identical piezoelectric chip of multiple character or wafer is cut into the identical array element of multiple character, has features such as can controlling the depth of focus, deflection angle and wave beam.
Arrange closely between the root leaf due to steam turbine fir-tree root, intermediate space is very narrow and small, conveniently phased array detection mode, needs that blade root is disassembled detection and installs back, waste time and energy.Want to realize Ultrasonic Detection when not dismantling blade root, need to design size enough little, detect and pop one's head in very flexibly, detect between the root leaf that shape is changeable to meet, adapt to the scanning on blade root diverse location, different depth, different directions.
Utility model content
For the problems referred to above, the utility model provides the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root, this cover phased array probe is made up of the probe of three sections of different sizes, shape, parameter altogether, be applied to the Ultrasonic Detection of steam turbine fir-tree root different parts respectively, have both small and exquisite, easy to detect fast, the advantage such as accurate positioning.
The purpose of this utility model realizes by the following technical solutions:
The integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root, it is characterized in that, comprise 0 ° of compressional wave phased array probe for scanning fir-tree root platform, the shear wave side outlet phased array probe for scanning fir-tree root blade outer arc and inner arc, eject line phased array probe for the shear wave of scanning fir-tree root platform and end face; Three kinds of described probes include shell and core, and described core is arranged in described shell; Also be provided with integrated voussoir in the shell that described shear wave side outlet phased array probe and described shear wave eject line phased array probe, and described core is arranged on described integrated voussoir; Three described probes are all connected with phased array detector by connector end.
Preferably, described core comprises matching layer, piezoelectric ceramic wafer, backing, and described piezoelectric ceramic wafer is arranged on described matching layer, and described backing is arranged on described piezoelectric ceramic wafer; The matching layer that described shear wave side outlet phased array probe and described shear wave eject line phased array probe is arranged on described integrated voussoir.
Preferably, the both sides of described shell are provided with the threaded hole for mounting tool fixture.
Preferably, the piezoelectric of described 0 ° of compressional wave phased array probe is 1-3 type composite piezoelectric material, and its frequency is 5MHz, and divide and be cut to 10 independent array elements, its array element distance is 0.5mm, and its array element length is 5mm.
Preferably, the outer cover length of described 0 ° of compressional wave phased array probe is 8mm, and it is wide is 10mm, and its height is 25mm.
Preferably, the piezoelectric of described shear wave side outlet phased array probe is 1-3 type composite piezoelectric material, and its frequency is 5MHz, and divide and be cut to 12 independent array elements, its array element distance is 0.5mm, and its array element length is 6mm.
Preferably, the outer cover length of described shear wave side outlet phased array probe is 25mm, and it is wide is 9mm, and its height is 9.7mm; The integrated voussoir of described shear wave side outlet phased array probe is made up of polystyrene, and its incident angle is 36 °, and its transverse wave velocity is 2337m/s, and the refraction angle of shear wave in steel is 55 °.
Preferably, the piezoelectric that described shear wave ejects line phased array probe is 1-3 type composite piezoelectric material, and its frequency is 5MHz, and divide and be cut to 12 independent array elements, its array element distance is 0.5mm, and its array element length is 6mm.
Preferably, the outer cover length that described shear wave ejects line phased array probe is 18mm, and wide is 9mm, and height is 19.7mm; The integrated voussoir that described shear wave ejects line phased array probe is made up of polystyrene, and its incident angle is 36 °, and its transverse wave velocity is 2337m/s, and the refraction angle of shear wave in steel is 55 °.
Preferably, described 0 ° of compressional wave phased array probe adopts straight outlet method; Described shear wave side outlet phased array probe adopts side outlet method, and described shear wave ejects line phased array probe and adopts straight outlet method.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of 0 ° of compressional wave phased array probe;
Fig. 2 is the sectional view of 0 ° of compressional wave phased array probe;
Fig. 3 is the structural representation of shear wave side outlet phased array probe;
Fig. 4 is the sectional view of shear wave side outlet phased array probe;
Fig. 5 is the structural representation that shear wave ejects line phased array probe;
Fig. 6 is the sectional view that shear wave ejects line phased array probe;
Schematic diagram when Fig. 7 is 0 ° of compressional wave phased array probe scanning blade root platform;
Schematic diagram when Fig. 8 is shear wave side outlet phased array probe scanning blade root blade lateral surface;
Schematic diagram when Fig. 9 is shear wave side outlet phased array probe scanning blade root blade medial surface;
Figure 10 is the schematic diagram of shear wave when ejecting line phased array probe scanning blade root platform.
Reference numeral: shell-1; Threaded hole-2; Connector end-3; Integrated voussoir-4; Core-5; Matching layer-6; Piezoelectric ceramic wafer-7; Backing-8.
Embodiment
With the following Examples the utility model is further described.
The integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root, comprise the phased array probe of three sections of different sizes, profile and parameters, be respectively 0 ° of compressional wave phased array probe, shear wave side outlet phased array probe, shear wave eject line phased array probe, preferably, in this embodiment, outlet phased array probe in shear wave side adopts shell side outlet method, and shear wave ejects line phased array probe and adopts cover top portion outlet method.
As shown in Figure 1-2, described 0 ° of compressional wave phased array probe is applied to the scanning of fir-tree root platform.Described 0 ° of compressional wave phased array probe comprises shell 1 and core 5, and described core 5 is arranged in described shell 1.Described core 5 comprises matching layer 6, piezoelectric ceramic wafer 7, backing 8, and described piezoelectric ceramic wafer 7 is arranged on described matching layer 6, and described backing 8 is arranged on described piezoelectric ceramic wafer 7.The piezoelectric of described 0 ° of compressional wave phased array probe is 1-3 type composite piezoelectric material, and its frequency is 5MHz, and divide and be cut to 10 independent array elements, its array element distance is 0.5mm, and its array element length is 5mm.The outer cover length of described 0 ° of compressional wave phased array probe is 8mm, and wide is 10mm, and height is 25mm, and described 0 ° of compressional wave phased array probe takes up room little, is conducive to the scanning in blade root platform face.The shell both sides of described 0 ° of compressional wave phased array probe are provided with the threaded hole 2 that specification is M2*0.4, for the clamping of frock clamp.
As shown in Figure 3-4, described shear wave side outlet phased array probe is applied to the scanning of fir-tree root blade outer arc and inner arc.Described shear wave side outlet phased array probe comprises shell 1, integrated voussoir 4 and core 5, and described core 5 and described integrated voussoir 4 are arranged in described shell 1, and described core 5 is arranged on described integrated voussoir 4.Described core 5 comprises matching layer 6, piezoelectric ceramic wafer 7, backing 8, and described matching layer 6 is arranged on described integrated voussoir 4, and described piezoelectric ceramic wafer 7 is arranged on described matching layer 6, and described backing 8 is arranged on described piezoelectric ceramic wafer 7.The piezoelectric of described shear wave side outlet phased array probe is 1-3 type composite piezoelectric material, and its frequency is 5MHz, and divide and be cut to 12 independent array elements, its array element distance is 0.5mm, and its array element length is 6mm.Described shear wave side outlet phased array probe enclosure is designed to integrated voussoir 4, makes the structure of probe reach minimum.Described shear wave side outlet phased array probe outer cover body length is 25mm, and it is wide is 9mm, and its height is 9.7mm, is more conducive to the coupling of blade root cambered surface.The incident angle of described integrated voussoir 1 is 36 °, is made up of polystyrene, and its transverse wave velocity is 2337m/s, and the refraction angle of shear wave in steel is 55 °.Described shear wave side outlet phased array probe adopts side outlet method, is conducive to through space between narrow and small blade root; The shell both sides of described shear wave side outlet phased array probe are provided with the threaded hole 2 that specification is M2*0.4, for the clamping of frock clamp.
As seen in figs. 5-6, described shear wave ejects the scanning that line phased array probe is applied to fir-tree root platform and end face.Described shear wave ejects line phased array probe and comprises shell 1, integrated voussoir 4 and core 5, and described core 5 and described integrated voussoir 4 are all arranged in described shell 1, and described core 5 is arranged on described integrated voussoir 4.Described core 5 comprises matching layer 6, piezoelectric ceramic wafer 7, backing 8, and described matching layer 6 is arranged on described integrated voussoir 4, and described piezoelectric ceramic wafer 7 is arranged on described matching layer 6, and described backing 8 is arranged on described piezoelectric ceramic wafer 7.The piezoelectric that described shear wave ejects line phased array probe is 1-3 type composite piezoelectric material, and its frequency is 5MHz, and divide and be cut to 12 independent array elements, its array element distance is 0.5mm, and its array element length is 6mm.Described shear wave ejects line phased array probe enclosure and is designed to integrated voussoir 4, makes the structure of probe reach minimum.The outer cover body length that described shear wave ejects line phased array probe is 18mm, and it is wide is 9mm, and its height is 19.7mm.The incident angle of described integrated voussoir 1 is 36 °, and it is made up of polystyrene, and its transverse wave velocity is 2337m/s, and the refraction angle of shear wave in steel is 55 °.Described shear wave ejects line phased array probe and adopts straight outlet method, and space hold is little, is conducive to the scanning of blade root platform face; The shell both sides that described shear wave ejects line phased array probe are provided with the threaded hole 2 that specification is M2*0.4, for the clamping of frock clamp.
When the ultrasonic imaging using the utility model to carry out turbine blade fir-tree type root detects, perform according to following steps:
As shown in Figure 7, select 0 ° of compressional wave phased array probe, described 0 ° of compressional wave phased array probe is connected with phased array detector by connector end 3.At the side, both sides of blade root shoulder platform brushing couplant, phased array detector excites compressional wave, enters fan sweeping pattern, and the best start angle of sector scan is-30 °, and best termination point is 30 °; Mobile phased array probe, internal outer arc carries out scanning near the region at two ends and extrados blade root interior zone.Use this kind of scanning can contain the base region of below the both sides platform of blade root and outer arc.
As Figure 8-9, select shear wave side outlet phased array probe, described shear wave side outlet phased array probe is connected with phased array detector by connector end 3.Inside the blade of blade root, outside brushing couplant, phased array detector excites shear wave, enters fan sweeping pattern, and fan sweeping angle is 40 ° to 70 °; From bottom blade with the cambered surface that crosses of the first tooth root, complete a scanning along blade cambered surface.Use this kind of scanning can contain the base region of below inside and outside lateral lobe body.
As shown in Figure 10, select shear wave to eject line phased array probe, described shear wave is ejected line phased array probe and is connected with phased array detector by connector end 3.At the side, both sides of blade root shoulder platform brushing couplant, phased array detector excites shear wave, enters fan sweeping pattern, and fan sweeping angle is 40 ° to 70 °.Mobile phased array probe, carries out scanning to inner arc base region.
In the utility model, by the combination scanning of three sections of phased arrays, complete detection can be carried out to blade root inside, ultrasound wave is refracted to inside blade root by integrated voussoir, phased array detector converts the reflected sonic signals collected to electric signal, and after finding defect, sound wave returns along original route; Focus on rule by fan sweeping, the size finding defect can be known.By the scanning fixture of assembling on the described threaded hole 2 of phased array probe both sides, in realization when not dismantling blade root, phased array probe being put in narrow and small blade gap and carrying out scanning, coordinate with automatic scanning device simultaneously and realize automatic scanning.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection domain; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (10)
1. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root, it is characterized in that, comprise 0 ° of compressional wave phased array probe for scanning fir-tree root platform, the shear wave side outlet phased array probe for scanning fir-tree root blade outer arc and inner arc, eject line phased array probe for the shear wave of scanning fir-tree root platform and end face; Three kinds of described probes include shell and core, and described core is arranged in described shell; Also be provided with integrated voussoir in the shell that described shear wave side outlet phased array probe and described shear wave eject line phased array probe, and described core is arranged on described integrated voussoir; Three kinds of described probes are all connected with phased array detector by connector end.
2. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, described core comprises matching layer, piezoelectric ceramic wafer, backing, described piezoelectric ceramic wafer is arranged on described matching layer, and described backing is arranged on described piezoelectric ceramic wafer; The matching layer that described shear wave side outlet phased array probe and described shear wave eject line phased array probe is arranged on described integrated voussoir.
3. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, the both sides of described shell are provided with the threaded hole for mounting tool fixture.
4. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, the piezoelectric of described 0 ° of compressional wave phased array probe is 1-3 type composite piezoelectric material, its frequency is 5MHz, divide and be cut to 10 independent array elements, its array element distance is 0.5mm, and its array element length is 5mm.
5. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, the outer cover length of described 0 ° of compressional wave phased array probe is 8mm, and it is wide is 10mm, and its height is 25mm.
6. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, the piezoelectric of described shear wave side outlet phased array probe is 1-3 type composite piezoelectric material, its frequency is 5MHz, divide and be cut to 12 independent array elements, its array element distance is 0.5mm, and its array element length is 6mm.
7. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, the outer cover length of described shear wave side outlet phased array probe is 25mm, and it is wide is 9mm, and its height is 9.7mm; The integrated voussoir of described shear wave side outlet phased array probe is made up of polystyrene, and its incident angle is 36 °, and its transverse wave velocity is 2337m/s, and the refraction angle of shear wave in steel is 55 °.
8. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, the piezoelectric that described shear wave ejects line phased array probe is 1-3 type composite piezoelectric material, its frequency is 5MHz, divide and be cut to 12 independent array elements, its array element distance is 0.5mm, and its array element length is 6mm.
9. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, the outer cover length that described shear wave ejects line phased array probe is 18mm, and it is wide is 9mm, and its height is 19.7mm; The integrated voussoir that described shear wave ejects line phased array probe is made up of polystyrene, and its incident angle is 36 °, and its transverse wave velocity is 2337m/s, and the refraction angle of shear wave in steel is 55 °.
10. the integrated voussoir phased array probe combination of a set of Non-Destructive Testing fir-tree root according to claim 1, it is characterized in that, described 0 ° of compressional wave phased array probe adopts straight outlet method; Described shear wave side outlet phased array probe adopts side outlet method, and described shear wave ejects line phased array probe and adopts straight outlet method.
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| CN201520765135.7U CN204989109U (en) | 2015-09-29 | 2015-09-29 | Integrated voussoir phased array probe combination of one set of nondestructive test fir type blade root |
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| CN201520765135.7U CN204989109U (en) | 2015-09-29 | 2015-09-29 | Integrated voussoir phased array probe combination of one set of nondestructive test fir type blade root |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319273A (en) * | 2015-09-29 | 2016-02-10 | 国家电网公司 | Integrated wedge block phased array probe assembly for nondestructive testing of fir-tree blade root |
| CN105784843A (en) * | 2016-04-28 | 2016-07-20 | 江苏方天电力技术有限公司 | Special-shaped structural member weld phased array imaging test transducer device and testing method |
| CN107589179A (en) * | 2017-09-30 | 2018-01-16 | 浙江省特种设备检验研究院 | Detection method and device in more voussoir ultrasonic phase arrays of high-pressure bottle end socket weld seam |
| CN108020597A (en) * | 2016-10-28 | 2018-05-11 | 核动力运行研究所 | A kind of phased array probe for automatic ultrasonic detection |
| CN112505160A (en) * | 2020-11-18 | 2021-03-16 | 北京主导时代科技有限公司 | Split type rail flaw detection phased array ultrasonic probe |
| WO2023015282A1 (en) * | 2021-08-05 | 2023-02-09 | Siemens Energy, Inc. | System and method of phased array ultrasonic inspection of turbine blades |
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2015
- 2015-09-29 CN CN201520765135.7U patent/CN204989109U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319273A (en) * | 2015-09-29 | 2016-02-10 | 国家电网公司 | Integrated wedge block phased array probe assembly for nondestructive testing of fir-tree blade root |
| CN105784843A (en) * | 2016-04-28 | 2016-07-20 | 江苏方天电力技术有限公司 | Special-shaped structural member weld phased array imaging test transducer device and testing method |
| CN108020597A (en) * | 2016-10-28 | 2018-05-11 | 核动力运行研究所 | A kind of phased array probe for automatic ultrasonic detection |
| CN107589179A (en) * | 2017-09-30 | 2018-01-16 | 浙江省特种设备检验研究院 | Detection method and device in more voussoir ultrasonic phase arrays of high-pressure bottle end socket weld seam |
| CN107589179B (en) * | 2017-09-30 | 2024-03-26 | 浙江省特种设备科学研究院 | Multi-wedge ultrasonic phased array internal detection method and device for high-pressure container seal head weld joint |
| CN112505160A (en) * | 2020-11-18 | 2021-03-16 | 北京主导时代科技有限公司 | Split type rail flaw detection phased array ultrasonic probe |
| WO2023015282A1 (en) * | 2021-08-05 | 2023-02-09 | Siemens Energy, Inc. | System and method of phased array ultrasonic inspection of turbine blades |
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