CN215066355U - 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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- CN215066355U CN215066355U CN202121312247.9U CN202121312247U CN215066355U CN 215066355 U CN215066355 U CN 215066355U CN 202121312247 U CN202121312247 U CN 202121312247U CN 215066355 U CN215066355 U CN 215066355U
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Abstract
The utility model discloses a transverse wave oblique incidence water immersion detection system for transverse defects of steel welding joints, which 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 utility model discloses under the operating mode that does not dispel the surplus height, realize that the horizontal wave oblique incidence water logging of steel welded joint detects.
Description
Technical Field
The utility model relates to a detecting system, concretely relates to horizontal wave oblique incidence water logging detecting system of defect of steel welded 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.
SUMMERY OF THE UTILITY MODEL
For solving above-mentioned problem, improve the relevance ratio of the horizontal defect of steel welded joint, the utility model provides a horizontal wave oblique incidence water logging detecting system of steel welded joint for calculate and adjust the water logging and detect focus probe eccentricity x, water jacket voussoir normal water layer thickness H and the curvature radius isoparametric of acoustic lens, under the operating mode that does not dispel the surplus height, realize that the horizontal wave oblique incidence water logging of steel welded joint detects, the utility model discloses under the prerequisite that does not get rid of the welded joint surplus height, can realize manual, quick, reliable horizontal defect detection, improve horizontal defect relevance ratio.
The utility model discloses a following technical scheme realizes:
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 utility model discloses further improvement lies in, still includes the stabiliser that sets up in the middle of the hose, adjusts the coupling medium in the water jacket wedge through the size of adjusting stabiliser numerical value.
The utility model discloses a further improvement lies in, coupling medium is water.
The utility model discloses a further improvement lies in, acoustic lens is cylindrical lens or spherical lens.
The utility model discloses further improvement lies in, through the water logging detect the supersound longitudinal wave that the focus probe arouses be used for acoustic lens department to carry out line focus or point focus.
The utility model discloses further improvement lies in that the contact surface of water jacket voussoir and vertical welded joint is processed according to vertical welded joint's transverse dimension and is formed.
The utility model discloses a further improvement lies in, depth of focus F and acoustic lens's radius rSoundIn relation to, and satisfying r for longitudinal welded jointsSound0.46F, the acoustic lens radius r can be calculatedSoundThe size of (2).
The utility model discloses a further improvement lies in, the water logging detects the degree of depth position H of focus probe in the water jacket voussoir and 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 utility model discloses at least, following profitable technological effect has:
the utility model provides a pair of horizontal defect shear wave oblique incidence water logging detecting system of steel welded joint provides the calculation process that realizes that horizontal defect shear wave oblique incidence water logging of steel welded joint detects each parameter, can carry out the pertinence according to this calculation process to the curvature radius that 1 water logging detected focus probe eccentricity x, 2 water jacket voussoirs normal water thickness H and 6 acoustic lens and adjusts.
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 present invention will be further described 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 utility model provides a pair of horizontal defect transverse wave oblique incidence water logging detecting system of steel welded joint, detect focus probe 1, water jacket voussoir 2, vertical welded joint 3, stabiliser 4, water tank 5 and water logging and detect focus probe acoustic lens 6 including the water logging.
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 for detecting transverse wave oblique incidence water immersion of steel welded joint transverse defect according to claim 1, characterized in that the depth of focus F and the radius r of the acoustic lens (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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121312247.9U CN215066355U (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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121312247.9U CN215066355U (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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| CN215066355U true CN215066355U (en) | 2021-12-07 |
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| CN202121312247.9U Active CN215066355U (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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