CN208636261U - A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block - Google Patents
A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block Download PDFInfo
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- CN208636261U CN208636261U CN201821340871.8U CN201821340871U CN208636261U CN 208636261 U CN208636261 U CN 208636261U CN 201821340871 U CN201821340871 U CN 201821340871U CN 208636261 U CN208636261 U CN 208636261U
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Abstract
It is detected a flaw the utility model relates to a kind of steam turbine multifork root with phased array supersonic and debugs test block, whole is in cuboid, the top and bottom of test block are rectangle detection faces, the leading flank of test block and trailing flank are machined with multiple mutually independent detection zones (1), it is semi-moon shaped slot that the detection zone (1), which is cross section, and standard crack defect (2) are machined in slot.Compared with prior art, the utility model compensates for deficiency of the multifork root phased-array ultrasonic without targetedly Special debugging test block in industry, can satisfy the debugging to steam turbine multifork root different depth and size defect, to meet the requirement of different sensitivity.
Description
Technical field
The utility model relates to a kind of ultrasonic inspections to debug test block, more particularly, to a kind of steam turbine multifork root with phased
Battle array ultrasonic inspection debugs test block.
Background technique
Turbine rotor is one of the critical component of large-scale thermal power machine group, and turbine blade root is as high-speed rotation
Component easily because of manufacturing defect, material property and bears powerful centrifugal force, curved power in high temperature, high pressure, running at high speed
Fracture accident occurs with the factors such as torsion.Turbine rotor blade root is often imbedded in impeller internal, if cannot find to exist in time
Defect, it will cause blade to fly off, cause serious production accident, conventional detection means are due to structure and limited space at present,
Detection zone and detection sensitivity are limited.
Phased-array ultrasonic as a kind of relatively new detection means, at present steam turbine often with blade root have fir-tree type,
A variety of patterns such as forked type, T-type, bacterial type, the architectural difference of different types is larger, such as takes during ultrasound examination universal
Test block is debugged as a comparison, and there are certain deficiencies in sensitivity and accuracy, it is contemplated that the actually detected area of multifork root is
Two sides cambered surface central area, multifork root has it unique, in conjunction with thermal power plant's different size multifork root, and with reference to related mark
Requirement of the standard to flaw sensitivity needs to design a kind of multifork root debugging test block, to improve the actual phased array of multifork root
Ultrasound examination accuracy.
Utility model content
The purpose of this utility model be exactly in order to overcome the problems of the above-mentioned prior art and provide a kind of structure it is simple,
With strong points, practicability and the steam turbine multifork root of strong operability are detected a flaw with phased array supersonic debugs test block, is commissioning device
Sensitivity flaw detection is used, and is solved multifork root phased-array ultrasonic in current industry and is detected the shape without Special debugging and reference block
Condition keeps the flaw detection of steam turbine phased-array ultrasonic multifork root more accurate, reliable.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block, the test block is integrally in cuboid,
The top and bottom of test block are rectangle detection faces, and the leading flank of test block and trailing flank are machined with multiple mutually independent detections
Area, the detection zone are that cross section is semi-moon shaped slot, and standard crack defect is machined in slot.
Depth positioned at each standard crack defect of same side is different.
Depth positioned at each standard crack defect of same side is gradually incremented by, the depth of the standard crack defect of two sides
It is opposite to spend variation tendency.
There are at one zero defect, the detection zone and standard crack in detection zone in the leading flank of the test block and trailing flank respectively
The smallest detection zone of depth of defect is adjacent.
Process multiple through-holes through leading flank and trailing flank in the test block, the through-hole will test section every
It opens.
The through-hole is waist-shaped hole.
The detection zone of the leading flank is on a horizontal line, and the detection zone of trailing flank is on another horizontal line, and two
Horizontal line height is different.
Compared with prior art, the utility model has the advantage that
(1) deficiency of the multifork root phased-array ultrasonic without targetedly Special debugging test block in industry is compensated for.
(2) it can satisfy the debugging to steam turbine multifork root different depth defect, to meet the requirement of different sensitivity.
(3) small in size, it is convenient for carrying, carries out device sensitivity at any time convenient for working site and calibrated.
(4) structure is simple, and design is light and handy, low cost.
(5) through-hole is waist-shaped hole, ensure that the integrality of upper and lower two detection faces, can be to 4 depth 5 different sizes
Defect and nondefective zone carry out complete comparative detection.
The change in depth trend of the standard crack defect of (6) two sides on the contrary, avoid between defect to the full extent
Interfering for back wave, makes back wave clearly meet rule.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the present embodiment test block；
Fig. 2 is the schematic view of the front view of the present embodiment test block；
Fig. 3 is the left view structural representation of the present embodiment test block；
Fig. 4 is the overlooking structure diagram of the present embodiment test block；
Appended drawing reference:
1 is detection zone；2 be standard crack defect；3 be through-hole.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
Embodiment
The present embodiment steam turbine multifork root detects a flaw debugging test block with reference to practical blade root pattern and stress with phased array supersonic
Form is concentrated, change is numerous to go letter, retains its effective ontology and stress concentrating structure position, with the design of cuboid-type structure, in two sides
Standard crack defect is made at the different depth of face, is accomplished to cover at present multifork root pattern mostly, be can satisfy to forked type
Blade root different depth, the debugging of different size flaw sensitivity, specific aim and application are stronger, keep detection more accurate and reliable.
As shown in figures 1-4, debugging test block can be used as detection faces with the design of " rectangle " stereochemical structure, above and below, and two
Side form intends practical type of blade root and respectively designs at the standard crack defect 2 and one of 5 different depths zero defect as a comparison, two sides
Standard crack defect 2 is to be in staggered distribution, and each detection zone 1 is simulated practical blade root and separated with groove profile through-hole 3, in above and below to not
Same specification defect is debugged, practical to meet the needs of different detection sensitivities, keeps detection more accurate and reliable.
In use, (i.e. ACG is repaired for sensitivity so that phased-array ultrasonic multifork root detects a flaw common fan sweeping (recommendation) as an example
It just) calibrates, choosing crack depth and position according to practical the second tooth depth of blade root (recommendation) is reference, is chosen substantially in test block
Position and the standard crack defect 2 for needing corresponding sensitivity depth, by its echo amplitude be adjusted to it is all over the screen it is appropriate highly (such as
90%), as Scanning sensitivity；TCG sensitivity amendment, the corresponding arc detection zone in measurement blade root two sides is as adjustable range, choosing
Test block approximate depth range crackle is taken, by gate lock defect maximum reflection echo, is moved forward and backward, acquires and is increased by system
Benefit compensation so that each deep defects echo is reached identical amplitude (such as 80%), finally select point-rendering TCG curve, then with
This is detected accordingly.
Claims (7)
1. a kind of steam turbine multifork root is detected a flaw debugging test block with phased array supersonic, which is characterized in that the test block is integrally in
Cuboid, the top and bottom of test block are rectangle detection faces, and the leading flank of test block and trailing flank are machined with multiple mutually only
Vertical detection zone (1), the detection zone (1) are that cross section is semi-moon shaped slot, and standard crack defect (2) are machined in slot.
2. a kind of steam turbine multifork root according to claim 1 is detected a flaw with phased array supersonic and debugs test block, feature exists
In the depth positioned at each standard crack defect (2) of same side is different.
3. a kind of steam turbine multifork root according to claim 2 is detected a flaw with phased array supersonic and debugs test block, feature exists
In the depth positioned at each standard crack defect (2) of same side is gradually incremented by, the standard crack defect (2) of two sides
Change in depth trend is opposite.
4. a kind of steam turbine multifork root according to claim 1 is detected a flaw with phased array supersonic and debugs test block, feature exists
In there are detection zone at one (1) interior zero defect in the leading flank of the test block and trailing flank respectively, which splits with standard
The smallest detection zone of line defect (2) depth (1) is adjacent.
5. a kind of steam turbine multifork root according to claim 1 is detected a flaw with phased array supersonic and debugs test block, feature exists
In processing multiple through-holes (3) through leading flank and trailing flank in the test block, the through-hole (3) will test between area (1)
It separates.
6. a kind of steam turbine multifork root according to claim 5 is detected a flaw with phased array supersonic and debugs test block, feature exists
In the through-hole (3) is waist-shaped hole.
7. a kind of steam turbine multifork root according to claim 1 is detected a flaw with phased array supersonic and debugs test block, feature exists
In, the detection zone (1) of the leading flank is on a horizontal line, and the detection zone (1) of trailing flank is on another horizontal line, and two
Horizontal line height is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821340871.8U CN208636261U (en) | 2018-08-20 | 2018-08-20 | A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821340871.8U CN208636261U (en) | 2018-08-20 | 2018-08-20 | A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block |
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| Publication Number | Publication Date |
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| CN208636261U true CN208636261U (en) | 2019-03-22 |
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| CN201821340871.8U Active CN208636261U (en) | 2018-08-20 | 2018-08-20 | A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696485A (en) * | 2018-08-20 | 2019-04-30 | 中电华创电力技术研究有限公司 | A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block |
-
2018
- 2018-08-20 CN CN201821340871.8U patent/CN208636261U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696485A (en) * | 2018-08-20 | 2019-04-30 | 中电华创电力技术研究有限公司 | A kind of steam turbine multifork root phased array supersonic flaw detection debugging test block |
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