A test block horizontal hole measuring ruler for ultrasonic testing

Abstract

The present invention discloses a test block transverse hole measuring ruler for ultrasonic testing, comprising a main ruler of a standard transverse hole measuring ruler for ultrasonic testing, an auxiliary ruler of a standard transverse hole measuring ruler for testing, etc. The main ruler of the standard transverse hole measuring ruler for ultrasonic testing and the auxiliary ruler of the standard transverse hole measuring ruler for testing are arranged in parallel and can move relatively along the axial direction, one end of the scanning surface positioning ruler on the auxiliary ruler is hinged with one end of the auxiliary ruler of the standard transverse hole measuring ruler for testing, the other end of the scanning surface positioning ruler on the auxiliary ruler is a free end, the length measuring ruler on the scanning surface positioning ruler and the scanning surface positioning ruler on the auxiliary ruler are arranged crosswise, and the length measuring ruler on the scanning surface positioning ruler and the scanning surface positioning ruler on the auxiliary ruler can move relatively along the axial direction of each other, and one end of the positioning column on the main ruler is vertically fixed to the main ruler of the standard transverse hole measuring ruler for ultrasonic testing. The present invention can be used to accurately measure the height between the center of the test block transverse hole and the scanning surface, the horizontal distance between the front edge / incident point of the probe and the center of the transverse hole, or the outer arc length.

Description

Technical Field

[0001] The invention relates to a test block transverse hole measuring ruler for ultrasonic testing, which is used for accurately measuring the height between the test block transverse hole circle center and the scanning surface, the horizontal distance between the probe front edge / incident point and the transverse hole circle center or the outer arc length. Background Art

[0002] The performance indicators of ultrasonic probes and test blocks (probe deflection angle, offset, incident point, beam angle, etc.; test block size accuracy, etc.) directly affect the directivity of A-type pulse reflection ultrasonic beam and the effectiveness of defect location quantification. The standard has relatively strict control requirements for probe performance indicators. For example, the inspection standard "Nondestructive Testing of Pressure Equipment Part 3 Ultrasonic Testing" NB / T47013.3-2015 stipulates that when the center frequency of a single crystal oblique probe is less than 2MHz, the deviation between the measured beam angle and the nominal value is ≤3°, and when the center frequency is ≥2MHz, the deviation between the measured beam angle and the nominal value is ≤2°. The measurement of the beam angle is calculated by the instrument based on the size of the standard reflector (horizontal hole, curved surface, flat bottom hole, notch) of the calibration test block. Therefore, the size error of the standard reflector of the test block has a great influence on the performance indicators of the probe.

[0003] During the ultrasonic testing of welded joints of pressure-bearing equipment, a steel ruler / vernier caliper is often used to measure the depth, incident point and other parameters of the standard horizontal hole reflector of the test block. When measuring the horizontal hole depth, horizontal offset and other parameters of non-planar test blocks such as GS, RB-C, and RB-L, there are problems such as (1) the vernier caliper positioning claws are basically linear, and the measuring point cannot be accurately located; (2) the radius of the horizontal hole size is small, and the distance from the center of the horizontal hole to the surface of the test block cannot be directly measured; (3) the RB-L horizontal hole depth and horizontal offset value cannot be measured and verified. In addition, NB / T 47013.3-2015 requires the shape and size error of the test block to be ≤±0.05mm. When the test block is ground, if a steel ruler / vernier caliper is still used during the inspection of corrosion and mechanical damage on the surface of the test block, the measurement result will have a large error. Therefore, in view of the characteristics of the standard transverse hole reflector of Type A pulse reflection ultrasonic testing, the use of more operational measurement tools can improve the measurement accuracy of the test block, standardize the operation processes such as probe performance indicator verification, DAC\TCG production, and annual inspection of test blocks, and make the measurement results convenient for the implementation of standard requirements. Summary of the invention

[0004] In order to solve the above problems, facilitate on-site testing work, and standardize the ultrasonic testing standard cross-hole measurement process, the present invention provides a test block cross-hole measuring ruler for ultrasonic testing.

[0005] The present invention is achieved by adopting the following technical solutions:

[0006] A test block transverse hole measuring ruler for ultrasonic testing comprises a main ruler of a standard transverse hole measuring ruler for ultrasonic testing, an auxiliary ruler of the standard transverse hole measuring ruler for testing, a scanning surface positioning ruler on the auxiliary ruler, a length measuring ruler on the scanning surface positioning ruler, a transverse hole limiting column and a positioning column on the main ruler; wherein, the main ruler of the standard transverse hole measuring ruler for ultrasonic testing and the auxiliary ruler of the standard transverse hole measuring ruler for testing are both provided with scales, the main ruler of the standard transverse hole measuring ruler for ultrasonic testing and the auxiliary ruler of the standard transverse hole measuring ruler for testing are arranged in parallel and can move relatively along the axial direction, one end of the scanning surface positioning ruler on the auxiliary ruler is hinged to one end of the auxiliary ruler of the standard transverse hole measuring ruler for testing, the other end of the scanning surface positioning ruler on the auxiliary ruler is a free end, the length measuring ruler on the scanning surface positioning ruler and the scanning surface positioning ruler on the auxiliary ruler are arranged crosswise, and the length measuring ruler on the scanning surface positioning ruler and the scanning surface positioning ruler on the auxiliary ruler can both move relatively along the axial direction of each other, and one end of the positioning column on the main ruler is vertically fixed to the main ruler of the standard transverse hole measuring ruler for ultrasonic testing.

[0007] A further improvement of the present invention is that the transverse hole limit column is connected to the positioning column on the main scale by bolts, and the other end of the transverse hole limit column is inserted into the transverse hole of the transverse through hole test block to achieve the purpose of fixing the zero point of the center of the circle.

[0008] A further improvement of the present invention is that, according to the diameter of the transverse hole of the transverse through hole test block, transverse hole limiting columns with different outer diameters are selected.

[0009] A further improvement of the present invention is that the scale zero point of the main scale of the standard transverse hole measuring ruler for ultrasonic testing is located at the center of the positioning column on the main scale.

[0010] A further improvement of the present invention is that the auxiliary scale of the standard transverse hole measuring scale for detection is assembled with the main scale through the sliding groove on the tooth surface of the main scale of the standard transverse hole measuring scale for ultrasonic detection.

[0011] A further improvement of the present invention is that the scanning surface positioning ruler on the auxiliary ruler has a set width, which serves the purpose of being tangent to the scanning surface and fixing the measuring point when measuring a non-planar scanning surface / arc scanning surface.

[0012] A further improvement of the present invention is that a slideway is provided between the scanning surface positioning ruler on the auxiliary ruler and the length measuring ruler on the scanning surface positioning ruler, and the ruler body is limited and adjusted by the limiting columns of the scanning surface positioning ruler and the length measuring ruler.

[0013] A further improvement of the present invention is that the length measuring ruler on the scanning surface positioning ruler is provided with a scale, and the zero point of the scale is located at the leftmost end of the tooth surface. By adjusting the limit columns of the scanning surface positioning ruler and the length measuring ruler, the distance between the front edge / incident point of the probe and the center of the horizontal hole is measured.

[0014] A further improvement of the present invention is that the length measuring ruler on the scanning surface positioning ruler can be replaced with a flexible ruler as needed to measure the outer arc length between the probe front edge / incident point of the arc-shaped scanning surface and the center of the horizontal hole.

[0015] The present invention has at least the following beneficial technical effects:

[0016] The present invention provides a test block transverse hole measuring ruler for ultrasonic testing. The transverse hole limiting column can be selected according to transverse holes of different apertures. The transverse hole limiting column is threadedly connected with a positioning column on a main ruler to adjust the height of the scanning surface positioning ruler. The tooth surface of the scanning surface positioning ruler is tangent to the scanning surface of the non-planar test block to determine the measuring point. In combination with the main ruler and the auxiliary ruler, and drawing on the vernier caliper reading method, direct and accurate reading of the center of the transverse hole and the height of the scanning surface can be achieved.

[0017] Specifically, the diameter of the transverse hole limit column can be selected according to the needs, and the scale matching of the main ruler and the auxiliary ruler can be reasonably planned according to the measurement requirements.

[0018] Furthermore, the limit column between the scanning surface positioning ruler and the length measuring ruler can be adjusted to achieve the measurement of the front edge / incident point of the probe and the center of the horizontal hole. In addition, the outer arc length between the front edge / incident point of the arc test block probe and the center of the horizontal hole can be measured by replacing the flexible length measuring ruler, and compared with the instrument display data for verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front view of the standard horizontal hole measuring ruler for ultrasonic testing;

[0020] Figure 2 This is a top view of a standard cross-hole measuring ruler for ultrasonic testing;

[0021] Figure 3 This is the left view of the standard cross-hole measuring ruler used for ultrasonic testing.

[0022] Description of reference numerals:

[0023] 1 is the main scale of the standard horizontal hole measuring ruler for ultrasonic testing; 2 is the auxiliary scale of the standard horizontal hole measuring ruler for ultrasonic testing; 3 is the scanning surface positioning ruler on the auxiliary scale; 4 is the length measuring ruler on the scanning surface positioning ruler; 5 is the limit column of the scanning surface positioning ruler and the length measuring ruler; 6 is the horizontal hole limit column; 7 is the positioning column on the main scale; 8 is the horizontal through hole test block. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings.

[0025] It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] In the present invention, unless otherwise specified, directional words such as "up", "down", "left", and "right" are usually used. Figure 1 The direction in is used as the reference for description;

[0027] In the present invention, the size, scale and other information of the main ruler, auxiliary ruler and length measuring ruler are not fixed, and they can be reasonably planned according to work needs when used;

[0028] like Figure 1 As shown, the present invention provides a test block transverse hole measuring ruler for ultrasonic testing, comprising a main ruler 1 of a standard transverse hole measuring ruler for ultrasonic testing, an auxiliary ruler 2 of the standard transverse hole measuring ruler for testing, a scanning surface positioning ruler 3 on the auxiliary ruler, a length measuring ruler 4 on the scanning surface positioning ruler, a limiting column 5 between the scanning surface positioning ruler and the length measuring ruler, a transverse hole limiting column 6 and a positioning column 7 on the main ruler.

[0029] like Figure 1 As shown, the zero points of the main scale 1 of the standard horizontal hole measuring ruler for ultrasonic testing and the auxiliary scale 2 of the standard horizontal hole measuring ruler for testing are both located at the center of the circle of the horizontal hole limit column 6 and the positioning column 7 on the main scale. When reading the horizontal hole height of the horizontal through hole test block 8, the auxiliary scale 2 of the standard horizontal hole measuring ruler for testing can be located in the tooth surface groove of the main scale 1 of the standard horizontal hole measuring ruler for ultrasonic testing and slide. The main scale 1 of the standard horizontal hole measuring ruler for ultrasonic testing and the auxiliary scale 2 of the standard horizontal hole measuring ruler for testing are used together, and the reading method is referenced by the vernier caliper. The measurement accuracy can be referenced by the vernier caliper to arrange the scale surface scale according to the needs.

[0030] like Figure 2 As shown, when measuring non-planar test blocks such as RB-L, RB-C, GS, etc., according to the diameter of the transverse hole of the transverse through hole test block 8, the positioning column on the main ruler 7 is connected with the transverse hole limit column 6 through a thread, and the transverse hole limit column 6 is inserted into the transverse hole of the transverse through hole test block 8. By adjusting the scanning surface positioning ruler 3 on the auxiliary ruler so that the ruler surface is tangent to the scanning surface, the measuring point of the non-planar scanning surface can be found, and the center of the circle and the height of the scanning surface can be read according to the above method.

[0031] like Figure 2 As shown, when it is necessary to measure the distance between the horizontal hole and the front edge / incident point of the probe, since the zero point of the measuring ruler 4 on the scanning surface positioning ruler is located at the leftmost side of the ruler surface, by adjusting the limit column 5 of the scanning surface positioning ruler and the measuring ruler, the left end of the measuring ruler 4 on the scanning surface positioning ruler is made flush with the front edge of the probe, and the horizontal distance between the front edge / incident point of the probe and the center of the horizontal hole can be read through the scale on the ruler surface.

[0032] like Figure 2As shown, when the scanning surface is not a horizontal surface (such as the RB-L test block), the length measuring ruler 4 on the scanning surface positioning ruler can be replaced with a ruler with a certain flexibility as needed, and the outer arc length of the probe front edge / incident point from the center of the horizontal hole can be read through the scale on the tooth surface, thereby verifying the instrument display reading.

Claims

1. A test block horizontal hole measuring ruler for ultrasonic testing, It is characterized in that The invention comprises a main scale (1) of a standard transverse hole measuring scale for ultrasonic testing, an auxiliary scale (2) of the standard transverse hole measuring scale for testing, a scanning surface positioning scale (3) on the auxiliary scale, a length measuring scale (4) on the scanning surface positioning scale, a transverse hole limiting column (6) and a positioning column (7) on the main scale; wherein: The main scale (1) of the standard horizontal hole measuring ruler for ultrasonic testing and the auxiliary scale (2) of the standard horizontal hole measuring ruler for testing are both provided with scales. The main scale (1) of the standard horizontal hole measuring ruler for ultrasonic testing and the auxiliary scale (2) of the standard horizontal hole measuring ruler for testing are arranged in parallel and can move relative to each other along the axial direction. One end of the scanning surface positioning scale (3) on the auxiliary scale is hinged to one end of the auxiliary scale (2) of the standard horizontal hole measuring ruler for testing, and the other end of the scanning surface positioning scale (3) on the auxiliary scale is a free end. The length measuring scale (4) on the scanning surface positioning scale and the scanning surface positioning scale (3) on the auxiliary scale are arranged in a cross manner, and the length measuring scale (4) on the scanning surface positioning scale and the scanning surface positioning scale (3) on the auxiliary scale can move relative to each other along the axial direction. One end of the positioning column (7) on the main scale is vertically fixed to the main scale (1) of the standard horizontal hole measuring ruler for ultrasonic testing; The scale zero point of the main scale (1) of the ultrasonic testing standard horizontal hole measuring ruler is located at the center of a positioning column (7) on the main scale; the auxiliary scale (2) of the testing standard horizontal hole measuring ruler is assembled with the main scale through the sliding groove on the tooth surface of the main scale (1) of the ultrasonic testing standard horizontal hole measuring ruler.

2. The ultrasonic testing test block horizontal hole measuring ruler according to claim 1, It is characterized in that The transverse hole limit column (6) is connected to the positioning column (7) on the main scale by bolts, and the other end of the transverse hole limit column (6) is inserted into the transverse hole of the transverse through hole test block (8) to achieve the purpose of fixing the zero point of the center of the circle.

3. The ultrasonic testing test block horizontal hole measuring ruler according to claim 2, It is characterized in that According to the diameter of the transverse hole of the transverse through hole test block (8), transverse hole limiting columns (6) with different outer diameters are selected.

4. The ultrasonic testing test block horizontal hole measuring ruler according to claim 1, It is characterized in that The scanning surface positioning ruler (3) on the auxiliary ruler has a set width and serves the purpose of being tangent to the scanning surface and fixing the measuring point when measuring a non-planar scanning surface.

5. The ultrasonic testing test block horizontal hole measuring ruler according to claim 1, It is characterized in that A slideway is provided between the scanning surface positioning ruler (3) on the auxiliary ruler and the length measuring ruler (4) on the scanning surface positioning ruler, and the ruler body is limited and adjusted by the limit columns (5) of the scanning surface positioning ruler and the length measuring ruler.

6. The ultrasonic testing test block horizontal hole measuring ruler according to claim 5, It is characterized in that The length measuring ruler (4) on the scanning surface positioning ruler is scaled, and the zero point of the scale is located at the leftmost end of the tooth surface. By adjusting the limit column (5) of the scanning surface positioning ruler and the length measuring ruler, the distance between the incident point of the probe and the center of the horizontal hole is measured.

7. The ultrasonic testing test block horizontal hole measuring ruler according to claim 1, It is characterized in that The length measuring ruler (4) on the scanning surface positioning ruler can be replaced with a flexible ruler as required, and is used to measure the outer arc length between the probe incident point of the arc-shaped scanning surface and the center of the horizontal hole.

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