CN208689014U - A kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification - Google Patents
A kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification Download PDFInfo
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- CN208689014U CN208689014U CN201821401475.1U CN201821401475U CN208689014U CN 208689014 U CN208689014 U CN 208689014U CN 201821401475 U CN201821401475 U CN 201821401475U CN 208689014 U CN208689014 U CN 208689014U
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- test block
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- diameter tube
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Abstract
The utility model relates to be tested or analysis of material using ultrasonic wave, sound wave or infrasound；The parts technical field of the imaging of interior of articles, specifically a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification are obtained by object by transmitting ultrasonic wave or sound wave.The test block body top surface is a cambered surface to raise upward, the bottom of test block is plane, two side bottom of test block offers a rectangular notch respectively, and wherein the rectangular notch lower part of side is also provided with an arc surface, and an arc groove concentric with arc surface is offered on the center line of the arc surface.The utility model solves the test of the Specifications of the various special probes of small diameter thin-walled circumferential weld ultrasonic wave, it can be used for verifying the performance of customization probe, it is able to satisfy verifying customization calibration of the ultrasonic probe in relation to performance and Scanning sensitivity, ensure the validity of ultrasonic quantitative detection and localization data, provides reliable data for the safety evaluation of pressure pipeline.
Description
Technical field
The utility model relates to be tested or analysis of material using ultrasonic wave, sound wave or infrasound；By transmitting ultrasonic wave or
Sound wave obtains the parts technical field of the imaging of interior of articles by object, specifically a kind of to examine for thin-walled small diameter tube ultrasound
The test block of probing head performance verification.
Background technique
The detection of small diameter thin-walled road butt girth welding seam is all made of ray method detection for a long time, and this method is except there are labor
Fatigue resistance is big, low efficiency, the period is long, at high cost, ray is harmful to the human body, can only act at night outside, especially radiography when
Must medium in evacuated tube, can not achieve with detection, cannot provide accurately the most important defect of safety is influenced
Quantitative data.Thus in " bearing device non-destructive testing " NB/T47013-2015 editions standards, small diameter thin-walled road butt joint ring
Seam 32≤DO≤159, T=4~8mm ultrasound examination are included in standard content, but to accomplish that in-service pressure pipeline is quantitative, fixed
Oneself height detection, ordinary ultrasonic probe can not adapt to testing requirements currently on the market, need to customize a kind of special ultrasonic probe.
Utility model content
The purpose of this utility model is exactly the related skill in order to solve the various special probes of small diameter thin-walled circumferential weld ultrasonic wave
The test of art index, designs a kind of special test block and relevant reflector is used to verify the performance of customization probe.Particular criteria examination
Block should be able to meet verifying customization calibration of the ultrasonic probe in relation to performance and Scanning sensitivity.Ensure ultrasonic quantitative detection and localization data
Validity, provide reliable data for the safety evaluation of pressure pipeline.
To achieve the above object, a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification is provided, including
Test block ontology, the test block body top surface are a cambered surface to raise upward, and the bottom of the test block is plane, the test block
Two side bottoms offer a rectangular notch respectively, and wherein the rectangular notch lower part of side is also provided with an arc surface, in the circular arc
An arc groove concentric with the arc surface is offered on the center line in face, the rectangular notch positioned at the side is that the first column unfilled corner is anti-
Beam, the rectangular notch positioned at the test block other side are the second column unfilled corner reflector.
Preferably, the test block is made of carbon steel material, test block maximum length, width and height having a size of 100mm × 15mm ×
20mm。
Preferably, the arc length of the test block body top surface be 100mm, width 15mm, the cambered surface radius of curvature
It is processed by the radius of curvature of examined workpiece, simulates actually detected environment.
Preferably, the chamfering of the rectangular notch is not more than 0.1mm.
Preferably, the length of the first column unfilled corner reflector is 10mm, the top surface of the first column unfilled corner reflector away from
It is 2.5mm from the distance between test block top surface vertex, the length of the second column unfilled corner reflector is 10mm, described second
The top surface of column unfilled corner reflector is 7.5mm apart from the distance between test block top surface vertex.
Preferably, the circular arc radius surface be 5mm, width 15mm, the circular arc groove radius is 7mm, width is
2mm。
Preferably, the test block base length be 75mm, width 15mm.
The utility model compared with the existing technology, the advantage is that:
1, the utility model is novel in design, and structure is simple, easy to process, easy to operate and light-weight easy to carry.
2, the utility model design use a kind of novel trans beam, that is, column unfilled corner reflector, than used in the past die hole,
The reflectors such as post holes, flat-bottom hole, groove more can accurate conditioning instrumentation timebase, effect is more satisfactory.
3, the concentric fan-shaped reflector of the utility model design, can meet simultaneously verifying probe acoustic axis whether deflection, probe
The effect of resolving power and transverse focusing, three kinds of functions are effectively fused together.
4, the arc surface of the utility model design is processed by test object actual curvature radius, can effectively simulate live inspection
Survey environment, it is ensured that the special ultrasonic probe reliable performance verified, detection positioning and quantitative are more accurate.
Detailed description of the invention
Fig. 1 (a) is the test block primary structure schematic diagram in the utility model embodiment；
Fig. 1 (b) is the side view of Fig. 1 (a) in the utility model embodiment；
Fig. 2 (a) is the test signal of test block test probe acoustic axis deflection and transverse resolution in the utility model embodiment
Figure；
Fig. 2 (b) is the side view of Fig. 2 (a) in the utility model embodiment；
Fig. 2 (c) is the waveform diagram that test block tests when popping one's head in acoustic axis deflection and transverse resolution in the utility model embodiment；
Fig. 3 (a) is the schematic diagram of test block test probe resolving power in the utility model embodiment；
Waveform diagram when Fig. 3 (b) is test block test probe resolving power in the utility model embodiment；
Fig. 4 is the schematic diagram that Front distance value b and K value are tested in test block in the utility model embodiment；
As shown, in figure: the examination of 1. cambered surface, 2. first column unfilled corner reflector, 3. second column unfilled corner reflector, 4. arc surface 5.
6. arc groove of block bottom surface.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing, the people of the structure and principle of this device to this profession
For be very clearly.It should be appreciated that specific embodiment described herein is only used to explain the utility model, and do not have to
In restriction the utility model.
As shown in Fig. 1 (a), Fig. 1 (b), the performance verification test block of thin-walled small diameter tube ultrasonic inspection probe is used in the present embodiment
Including cambered surface 1, the first column unfilled corner reflector 2, the second column unfilled corner reflector 3, arc surface 4, arc groove 6 and bottom surface 5.First column lacks
Corner reflector 2, the second column unfilled corner reflector 3 are the rectangular notch offered respectively in two side bottom of test block.It is preferred to verify test block
It is made of carbon steel material, test block maximum length, width and height are having a size of 100mm × 15mm × 20mm.
Wherein, cambered surface 1 is set at the top of test block, length 100mm, width 15mm, and cambered surface radius of curvature presses test object
The processing of actual curvature radius.First column unfilled corner reflector 2 and the second column unfilled corner reflector 3 are respectively arranged on test block two sides, the first column
One side of unfilled corner reflector 2 and the second column unfilled corner reflector 3 is parallel to bottom surface 5 perpendicular to cambered surface 1 on one side, thus at right angles, the
The chamfering r of one column unfilled corner reflector 2 and the second column unfilled corner reflector 3 is not more than 0.1mm.First column unfilled corner reflector is set to examination
On the left of block, length 10mm, 1 height of arc of recess face is 2.5mm.Second column unfilled corner reflector is set on the right side of test block, and length is
10mm, 1 height of arc of recess face are 7.5mm.Arc surface 4 is set to test block lower left quarter, radius 5mm, width 15mm, in the circular arc
The isocentric circular arc slot that Radius is 7mm, width 2mm are machined on the center line in face.The bottom surface 5 of test block is big flat, with arc
Face 1 is parallel, and the length of bottom surface is 75mm, width 15mm.The utility model is novel in design, easy to process, easy to operate, can have
Effect carries out focusing performance, acoustic beam deflection, resolving power, K value and the Front distance for thin-walled small diameter tube ultrasonic inspection probe
Performance verification.
As shown in Fig. 2 (a)~Fig. 2 (c), the utility model verifying probe acoustic axis whether deflection and transverse resolution.Detection
The combined reflected body of arc groove will appear two adjacent echo patterns at this time in instrument screen, the former is the echo of center arc groove,
The latter is the echo on cylindrical surface.Movement probe, when the echo amplitude maximum of center arc groove, observation probe axis whether deflection
Can determine whether acoustic axis whether deflection.It, can be in the echo amplitude maximum of center arc groove if not finding the deflection of acoustic axis in test
When, observe the amplitude difference Δ A1 of two echoes.If when Δ A1 >=20dB, illustrating that probe focusing effect is preferable, if when Δ A1 < 12dB
Illustrate that focusing effect is poor.
As shown in Fig. 3 (a), Fig. 3 (b), the utility model verifying probe resolving power.To pop one's head in the transverse shifting in test block,
When keeping two echo wave amplitudes equal, the amplitude differences Δ A2 from wave crest to trough is measured.Its difference should be not less than 12dB.
As shown in figure 4, the utility model test Front distance length and K value.Two column unfilled corner reflectors are detected, at this time only
The diffracted wave signal that angle end can be obtained, the Front distance L of measuring probe when diffracted wave signal wave amplitude maximum.Spy is calculated as follows
The K value and b value of head.
K=(L2-L1)/5
B=7.5K-L2
In formula, L1Front distance length when to detect the first column unfilled corner reflector, L2When to detect the second column unfilled corner reflector
Front distance length.
Finally, the scanning that the utility model can also pop one's head in is adjusted, detects the first column unfilled corner reflector 2 and the second column lacks
Corner reflector 3 is adjusted using the endpoint ultrasonic wave at angle.Due to the relationship that the buried depth of two reflectors is 3 times." scanning "
Regulated quantity is respectively Δ/2 and 3 Δ/2, and wherein Δ is echo range difference.
Above-mentioned verification experimental verification method actual measurement shows one kind designed by the utility model for thin-walled small diameter tube ultrasound detection
The function of probe performance verifying test block has reached design requirement, can satisfy a variety of for thin-walled small diameter tube ultrasonic inspection probe
The purpose being able to verify that.
Claims (7)
1. a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification, including test block ontology, it is characterised in that institute
The test block body top surface stated is a cambered surface to raise upward, and the bottom of the test block is plane, two side bottom of test block point
A rectangular notch is not offered, and wherein the rectangular notch lower part of side is also provided with an arc surface, in the center line of the arc surface
On offer an arc groove concentric with the arc surface, positioned at the side rectangular notch be the first column unfilled corner reflector, be located at
The rectangular notch of the test block other side is the second column unfilled corner reflector.
2. a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification as described in claim 1, feature exist
It is made in the test block of carbon steel material, test block maximum length, width and height are having a size of 100mm × 15mm × 20mm.
3. a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification as described in claim 1, feature exist
In the arc length of the test block body top surface be 100mm, width 15mm.
4. a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification as described in claim 1, feature exist
It is not more than 0.1mm in the chamfering of the rectangular notch.
5. a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification as described in claim 1, feature exist
It is 10mm in the length of the first column unfilled corner reflector, the top surface of the first column unfilled corner reflector is apart from the test block top surface
The distance between vertex is 2.5mm, and the length of the second column unfilled corner reflector is 10mm, the second column unfilled corner reflector
Top surface is 7.5mm apart from the distance between test block top surface vertex.
6. a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification as described in claim 1, feature exist
In the circular arc radius surface be 5mm, width 15mm, the circular arc groove radius is 7mm, width 2mm.
7. a kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification as described in claim 1, feature exist
In the test block base length be 75mm, width 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821401475.1U CN208689014U (en) | 2018-08-29 | 2018-08-29 | A kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821401475.1U CN208689014U (en) | 2018-08-29 | 2018-08-29 | A kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208689014U true CN208689014U (en) | 2019-04-02 |
Family
ID=65887254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821401475.1U Expired - Fee Related CN208689014U (en) | 2018-08-29 | 2018-08-29 | A kind of test block for thin-walled small diameter tube ultrasonic inspection probe performance verification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208689014U (en) |
-
2018
- 2018-08-29 CN CN201821401475.1U patent/CN208689014U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190402 Termination date: 20190829 |
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| CF01 | Termination of patent right due to non-payment of annual fee |