CN113252788A - Transverse wave oblique incidence water immersion detection system for transverse defects of steel welded joints - Google Patents
Transverse wave oblique incidence water immersion detection system for transverse defects of steel welded joints Download PDFInfo
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- CN113252788A CN113252788A CN202110655151.0A CN202110655151A CN113252788A CN 113252788 A CN113252788 A CN 113252788A CN 202110655151 A CN202110655151 A CN 202110655151A CN 113252788 A CN113252788 A CN 113252788A
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- 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
- G01N29/04—Analysing solids
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- 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
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Abstract
The invention discloses a transverse wave oblique incidence water immersion detection system for a steel welding joint transverse defect, which comprises a water immersion detection focusing probe, a water jacket wedge block, a voltage stabilizer and a water tank, wherein the water immersion detection focusing probe is arranged on the water jacket wedge block; the water immersion detection focusing probe is arranged in the water jacket wedge block, and the position of the water jacket wedge block can be adjusted along the circumferential direction and the depth direction of the longitudinal welding joint; the water jacket wedge block is filled with coupling medium and communicated with the water tank through a hose, and the water immersion detection focusing probe is provided with an acoustic lens, and ultrasonic longitudinal waves excited by the water immersion detection focusing probe are used for focusing at the acoustic lens. Under the working condition that extra height is not removed, transverse wave oblique incidence water immersion detection of the transverse defects of the steel welding joint is realized.
Description
Technical Field
The invention relates to a detection system, in particular to a transverse wave oblique incidence water immersion detection system for transverse defects of a steel welding joint.
Background
The thin-wall seamless steel tube generally adopts a water immersion method for transverse wave oblique incidence to carry out bidirectional circumferential automatic detection, and the premise that the thin-wall seamless steel tube realizes the transverse wave oblique incidence is (t/D)Critical point of＜1/2(1-CS2/CL2) Wherein t is the wall thickness of the steel pipe, D is the outer diameter of the steel pipe, CS2And CL2The sound velocities of transverse waves and longitudinal waves in the steel are respectively, namely t/D is less than 0.2. NB/T47013.3 nondestructive testing of pressure-bearing equipment part 3: the ultrasonic detection stipulates that when the transverse wave oblique incidence is adopted to detect the welding joint of the longitudinal steel bearing equipment, the ratio of the inner diameter to the outer diameter is more than or equal to 70 percent, namely t/D is less than or equal to 0.15, the condition of thin-wall transverse wave oblique incidence detection is met, and the thickness-diameter ratio of the transverse welding joint is not stipulated.
Whether ultrasonic detection of a welding joint of steel bearing equipment is carried out for scanning transverse defects generally depends on the requirement of detection grade in inspection regulations, if the detection grade is B grade or C grade, transverse defect scanning is generally carried out, the B grade detection occupies a higher proportion in the welding joint of the steel bearing equipment, and the B grade detection does not require removing extra height, so that the related standard generally recommends that a probe and the central line of the welding joint form a bidirectional oblique parallel scanning of not more than 10 degrees for scanning the transverse defects, but the angle of the probe is not specified clearly, and when the oblique parallel scanning is carried out for the transverse welding joint, the possibility that the angle of an acoustic beam cannot reach the root of the welding joint exists. In addition, in the ultrasonic detection process, the defect detection rate is inversely proportional to the angles of the ultrasonic sound beams and the defects, so that the defect detection rate is limited by the influence of a welding joint, and the oblique and parallel scanning has certain probability of missing detection when aiming at the transverse defect detection. Therefore, from the perspective of standard requirements for scanning transverse defects and defect detection rate, if the method for detecting the transverse wave oblique incidence of the seamless steel pipe is applied to the welding joint of the steel pressure-bearing equipment, a system for detecting the transverse defects of the welding joint is feasible, and the system has better defect detection rate than the oblique parallel scanning.
Disclosure of Invention
In order to solve the problems and improve the detection rate of the transverse defects of the steel welding joint, the invention provides a transverse wave oblique incidence water immersion detection system for the transverse defects of the steel welding joint, which is used for calculating and adjusting parameters such as the eccentricity x of a water immersion detection focusing probe, the thickness H of a water layer in a water jacket wedge block and the curvature radius of an acoustic lens, and the like, and realizes the transverse wave oblique incidence water immersion detection of the transverse defects of the steel welding joint under the working condition that the surplus height is not removed.
The invention is realized by adopting the following technical scheme:
a transverse wave oblique incidence water immersion detection system for a steel welding joint comprises a water immersion detection focusing probe, a water jacket wedge block, a voltage stabilizer and a water tank;
the water immersion detection focusing probe is arranged in the water jacket wedge block, and the position of the water jacket wedge block can be adjusted along the circumferential direction and the depth direction of the longitudinal welding joint; the water jacket wedge block is filled with coupling medium and communicated with the water tank through a hose, and the water immersion detection focusing probe is provided with an acoustic lens, and ultrasonic longitudinal waves excited by the water immersion detection focusing probe are used for focusing at the acoustic lens.
The invention further improves the structure that the water jacket wedge block further comprises a voltage stabilizer arranged in the middle of the hose, and the coupling medium in the water jacket wedge block is adjusted by adjusting the value of the voltage stabilizer.
A further development of the invention is that the coupling medium is water.
A further development of the invention is that the acoustic lens is a cylindrical lens or a spherical lens.
The invention is further improved in that the ultrasonic longitudinal wave excited by the water immersion detection focusing probe is used for line focusing or point focusing at the acoustic lens.
The invention is further improved in that the contact surface of the water jacket wedge block and the longitudinal welding joint is processed according to the transverse dimension of the longitudinal welding joint.
The invention is further improved in that the depth of focus F is related to the radius r of the acoustic lensSoundIn relation to, and satisfying r for longitudinal welded jointsSound0.46F, the acoustic lens radius r can be calculatedSoundSize of (2)。
The invention is further improved in that the depth position H of the water immersion detection focusing probe in the water jacket wedge block satisfies H-F- (R)2-x2) And 2, R and R respectively represent the inner diameter and the outer diameter of the steel pressure pipeline.
The invention has at least the following beneficial technical effects:
the transverse wave oblique incidence water immersion detection system for the transverse defect of the steel welding joint provided by the invention provides a calculation process for realizing the transverse wave oblique incidence water immersion detection of each parameter of the transverse defect of the steel welding joint, and can perform targeted adjustment on the eccentricity x of a water immersion detection focusing probe 1, the thickness H of a water layer in a water jacket wedge block 2 and the curvature radius of a 6-acoustic lens according to the calculation process.
In particular, the depth of focus F and the radius r of the acoustic lensSoundIn relation to, and satisfies r for a steel welded jointSound0.46F, the radius of curvature r of the acoustic lens can be calculatedSoundThe size of (d); on the premise of meeting the requirement that the first critical angle of ultrasonic detection and the primary transverse wave can be incident to the root of the welding joint, the eccentricity x meets the requirement of CL1×R/CL2≤x≤CL1×r/CS2In which C isL1Representing the speed of sound of longitudinal ultrasonic waves C in the coupling mediumL2、CS2Respectively representing the sound velocity of ultrasonic longitudinal waves and ultrasonic transverse waves in the 3 steel welding joint, and R and R respectively representing the inner diameter and the outer diameter of the steel pressure pipeline; the depth position H of the water immersion detection focusing probe in the water jacket wedge block should satisfy H ═ F- (R)2-x2)^2；
Further, after 1 parameter such as eccentricity x of a water immersion detection focusing probe, the thickness H of a water layer in a water jacket wedge block and the curvature radius of a sound lens is obtained through calculation, all hardware is adjusted according to the parameter, a voltage stabilizer switch is turned on, stability of a coupling medium in the water jacket wedge block is guaranteed, bidirectional scanning is conducted along the circumferential direction of a welding joint respectively, and therefore transverse wave oblique incidence water immersion detection of the transverse defect of the steel welding joint is achieved.
Drawings
FIG. 1 is a perspective view of a longitudinal weld joint with oblique incident water immersion detection of transverse waves;
FIG. 2 is a front view of a longitudinal welded joint for detecting transverse wave oblique incidence water immersion;
FIG. 3 is a top view of a longitudinal welded joint for transverse wave oblique incidence water immersion detection;
FIG. 4 is a left side view of a transverse wave oblique incidence water immersion test of a longitudinal welded joint;
FIG. 5 is a perspective view of a water immersion detection probe;
FIG. 6 is a front view of the water immersion detection probe;
FIG. 7 is a left side view of the water flood detection probe.
Description of reference numerals:
1 represents a water immersion detection focusing probe;
2 represents a water jacket wedge;
3 represents a longitudinal weld joint;
4 represents a voltage regulator;
5 represents a water tank;
and 6 represents a water immersion detection focusing probe acoustic lens.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
It should be understood that the embodiments described herein are for the purpose of illustrating and explaining this patent only and are not intended to be limiting, and the transverse-wave oblique-incidence water immersion detection of transverse defects in longitudinally welded steel pressure pipes is described below as an example.
As shown in fig. 1 to 7, the transverse wave oblique incidence water immersion detection system for the steel welding joint provided by the invention comprises a water immersion detection focusing probe 1, a water jacket wedge 2, a longitudinal welding joint 3, a voltage stabilizer 4, a water tank 5 and a water immersion detection focusing probe acoustic lens 6.
As shown in FIG. 2, the water immersion detection focusing probe 1 is placed in a water jacket wedge 2, and the position of the water jacket wedge 2 can be adjusted along the circumferential direction and the depth direction of a longitudinal welding joint 3.
As shown in fig. 2, the water jacket wedge 2 is filled with a coupling medium and is communicated with a water tank 5 through a hose, a pressurizer 4 is arranged in the middle of the hose, and the amount of water in the water jacket wedge 2 can be adjusted by adjusting the value of the pressurizer 4.
As shown in fig. 5, the water immersion detection focusing probe 1 is equipped with an acoustic lens 6, the acoustic lens 6 can be a cylindrical surface or a spherical surface, and the ultrasonic longitudinal wave excited by the water immersion detection focusing probe 1 is used for line focusing (cylindrical surface) or point focusing (spherical surface) at the acoustic lens 6.
As shown in fig. 2, the depth of focus F and the radius r of the acoustic lens 6SoundIn relation to, and satisfying r for the longitudinal welded joint 3Sound0.46F, the acoustic lens radius r can be calculatedSoundThe size of (2).
As shown in fig. 2, on the premise that the first critical angle of ultrasonic detection and the incidence of the primary transverse wave to the root of the longitudinal welded joint 3 are satisfied, the eccentricity x should satisfy CL1×R/CL2≤x≤CL1×r/CS2In which C isL1Representing the speed of sound of longitudinal ultrasonic waves C in the coupling mediumL2、CS2Respectively represent the sound velocity of ultrasonic longitudinal wave and ultrasonic transverse wave in the steel longitudinal welding joint 3, and R and R respectively represent the inner diameter and the outer diameter of the steel pressure pipeline.
As shown in fig. 2, the depth position H of the water immersion detection focusing probe 1 in the water jacket wedge 2 should satisfy H ═ F- (R —)2-x2)^2。
As shown in fig. 2, through a series of known calculation, the depth position H of the water immersion detection focusing probe 1 in the water jacket wedge 2, the circumferential eccentricity x of the water immersion detection focusing probe 1 in the water jacket wedge 2 and the radius of the acoustic lens 6 can be obtained respectively;
as shown in fig. 2, the ultrasonic longitudinal wave is focused by the acoustic lens 6 and then enters the coupling medium in the water jacket wedge block 2, and under the action of the coupling medium, an ultrasonic longitudinal wave α after the acoustic beam deflection is formed, the ultrasonic incident longitudinal wave α enters the extra-height surface of the longitudinal welding joint, and further an ultrasonic transverse wave β after the acoustic beam deflection is formed, and the 1 water immersion detection focusing probe is pushed in two directions along the circumferential direction of the 3 longitudinal welding joint, so that the detection of the transverse defect of the longitudinal welding joint 3 is realized.
Claims (8)
1. A transverse wave oblique incidence water immersion detection system for a steel welding joint is characterized by comprising a water immersion detection focusing probe (1), a water jacket wedge block (2), a voltage stabilizer (4) and a water tank (5);
the water immersion detection focusing probe (1) is arranged in the water jacket wedge block (2), and the position of the water jacket wedge block (2) can be adjusted along the circumferential direction and the depth direction of the longitudinal welding joint (3); the water jacket wedge block (2) is filled with a coupling medium and is communicated with the water tank (5) through a hose, and the water immersion detection focusing probe (1) is provided with an acoustic lens (6) and ultrasonic longitudinal waves excited by the water immersion detection focusing probe (1) are used for focusing at the acoustic lens (6).
2. The system for detecting transverse wave oblique incidence water immersion of the steel welding joint as claimed in claim 1, characterized by further comprising a voltage stabilizer (4) arranged in the middle of the hose, wherein the coupling medium in the water jacket wedge block (2) is adjusted by adjusting the value of the voltage stabilizer (4).
3. The steel weld joint transverse wave oblique incidence water immersion detection system according to claim 1 or 2, wherein the coupling medium is water.
4. The steel welded joint transverse defect transverse wave oblique incidence water immersion detection system according to claim 1, characterized in that the acoustic lens (6) is a cylindrical lens or a spherical lens.
5. The oblique incidence water immersion detection system for transverse wave of transverse defect of steel welded joint as claimed in claim 4, characterized in that ultrasonic longitudinal wave excited by the water immersion detection focusing probe (1) is used for line focusing or point focusing at the acoustic lens (6).
6. The transverse wave oblique incidence water immersion detection system for the steel welding joint as claimed in claim 1, characterized in that the contact surface of the water jacket wedge block (2) and the longitudinal welding joint (3) is processed according to the transverse dimension of the longitudinal welding joint (3).
7. The system of claim 1, wherein the depth of focus F and the acoustic penetration are selected to provide a depth of focus F and a depth of acoustic penetrationRadius r of the mirror (6)SoundIn connection with, and satisfying r for the longitudinal welded joint (3)Sound0.46F, the acoustic lens radius r can be calculatedSoundThe size of (2).
8. The transverse wave oblique incidence water immersion detection system for the steel welded joint as claimed in claim 7, wherein the depth position H of the water immersion detection focusing probe (1) in the water jacket wedge block (2) meets H-F- (R)2-x2) And 2, R and R respectively represent the inner diameter and the outer diameter of the steel pressure pipeline.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110655151.0A CN113252788A (en) | 2021-06-11 | 2021-06-11 | Transverse wave oblique incidence water immersion detection system for transverse defects of steel welded joints |
| PCT/CN2022/098267 WO2022258065A1 (en) | 2021-06-11 | 2022-06-10 | Transverse wave oblique incidence water immersion detection system for transverse defect of steel-welded joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110655151.0A CN113252788A (en) | 2021-06-11 | 2021-06-11 | Transverse wave oblique incidence water immersion detection system for transverse defects of steel welded joints |
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| CN113252788A true CN113252788A (en) | 2021-08-13 |
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| CN202110655151.0A Pending CN113252788A (en) | 2021-06-11 | 2021-06-11 | Transverse wave oblique incidence water immersion detection system for transverse defects of steel welded joints |
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| WO (1) | WO2022258065A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280161A (en) * | 2021-12-23 | 2022-04-05 | 杭州瑞声检测科技有限公司 | Probe wheel for double-rail type steel rail ultrasonic flaw detector |
| WO2022258065A1 (en) * | 2021-06-11 | 2022-12-15 | 西安热工研究院有限公司 | Transverse wave oblique incidence water immersion detection system for transverse defect of steel-welded joint |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808800A (en) * | 2014-03-07 | 2014-05-21 | 北京理工大学 | Ultrasonic combined detection method for large-diameter and thick-wall pipe |
| CN104515807A (en) * | 2014-10-27 | 2015-04-15 | 浙江省特种设备检验研究院 | Pressure pipeline ultrasonic internal detection automation device |
| CN105181799B (en) * | 2015-08-13 | 2018-02-13 | 河海大学常州校区 | The transverse defect detection means and method of Cylinder Surface workpiece |
| CN108318587A (en) * | 2018-01-23 | 2018-07-24 | 长沙芬贝电子科技有限公司 | A kind of adaptive voussoir ultrasonic probe |
| CN113252788A (en) * | 2021-06-11 | 2021-08-13 | 西安热工研究院有限公司 | Transverse wave oblique incidence water immersion detection system for transverse defects of steel welded joints |
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2021
- 2021-06-11 CN CN202110655151.0A patent/CN113252788A/en active Pending
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2022
- 2022-06-10 WO PCT/CN2022/098267 patent/WO2022258065A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022258065A1 (en) * | 2021-06-11 | 2022-12-15 | 西安热工研究院有限公司 | Transverse wave oblique incidence water immersion detection system for transverse defect of steel-welded joint |
| CN114280161A (en) * | 2021-12-23 | 2022-04-05 | 杭州瑞声检测科技有限公司 | Probe wheel for double-rail type steel rail ultrasonic flaw detector |
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| WO2022258065A1 (en) | 2022-12-15 |
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