CN218099013U - Defect location scale for ultrasonic testing of non-flat butt welds - Google Patents

Abstract

The utility model discloses a non-flat butt weld seam ultrasonic detection defect positioning scale, which comprises a horizontal scale and a vertical scale marked on the surface, the horizontal scale and the vertical scale are perpendicular to each other, and the bottom surface of the horizontal scale is provided with a level for sliding the horizontal scale. Ruler angle steel bracket, the first fastener is arranged on the level ruler angle steel bracket, one end of the level is the 0 scale end, the 0 scale end of the level is provided with a groove, and the groove is embedded with a groove that can be vertically along the level. The vertical ruler slides in the same direction, and the depth of the groove is the same as the thickness of the vertical ruler. The vertical ruler slides on the vertical ruler angle steel bracket, the vertical ruler angle steel bracket is fixed on the horizontal ruler, and the vertical ruler angle steel bracket is equipped with a second fastening pieces. The utility model uses the right-angled surface formed by the level ruler and the angle steel bracket of the level ruler to be close to the ultrasonic probe, moves and fixes the horizontal and vertical rulers according to the defect horizontal and vertical distances displayed by the ultrasonic detection, and uses the scale indicator to display and calculate the defects in the welding area. actual position in the seam.

Description

Defect location scale for ultrasonic testing of non-flat butt welds

technical field

The utility model relates to a defect positioning scale for ultrasonic detection of non-plate butt welds, which belongs to the technical field of ultrasonic detection.

Background technique

Ultrasonic testing is an important non-destructive testing method for judging whether there is a defect in the weld. The specific location of the defect can be determined by the horizontal and depth distance of the defect displayed by the ultrasonic detector relative to the probe. In the ultrasonic inspection of conventional flat butt joints or similar welded joints, since the detection surface of the probe is on the same level as the weld surface, the specific position of the defect in the weld can be directly determined by the level and depth indication of the defect. However, in the ultrasonic testing of non-planar welded parts such as arc-shaped pipe seat fillet welds, the position of the defect cannot be directly measured and determined on the curved surface according to the level and depth indication relative to the probe. Currently, the linear distance is estimated on the arc surface or After drawing correction, roughly determine the location of the defect.

In view of the above-mentioned shortcomings of the prior art, it is necessary to design a defect positioning scale for determining the actual position of the defect in the weld based on the horizontal and depth distances of the defect relative to the probe on the non-planar detection surface.

Contents of the invention

The technical problem to be solved by the utility model is: how to determine the actual position of the defect in the weld seam when performing ultrasonic inspection on non-planar welded parts.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is to provide a non-plate butt weld ultrasonic detection defect positioning scale, which is characterized in that it includes a horizontal scale and a vertical scale with scales on the surface, and the horizontal scale and the vertical scale are connected to each other. Vertical, the bottom surface of the level is provided with a level angle steel bracket that allows the level to slide, and the level angle bracket is provided with a first fastener that fixes the level. There is a groove on the end surface of the scale, and a vertical ruler that can slide along the vertical direction of the horizontal ruler is embedded in the groove, and the depth of the groove is the same as the thickness of the vertical ruler. The vertical ruler slides on the vertical ruler angle steel bracket, and the vertical ruler The angle steel support is fixed on the level ruler, and the vertical ruler angle steel support is provided with a second fastener that makes the vertical ruler fixed; the level ruler angle steel support and the 0 scale end of the vertical ruler are located on the same side of the level ruler.

Preferably, the middle part of the level is provided with a strip-shaped hollow groove along its length direction; the first fastener includes at least two sets of level-level tightening bolts and a fixed piece corresponding to each set of level-level tightening bolts, and the level-level tightening bolts The corresponding fixing piece is provided with a through hole, and the level angle bracket is provided with a threaded hole corresponding to the level tightening bolt. Threaded hole threaded connection.

Preferably, the level angle steel bracket has an L-shaped structure, the level is slidingly connected to the horizontal plane of the level angle steel bracket, and the level and the vertical plane of the level angle steel bracket form a right angle plane.

Preferably, the middle part of the vertical ruler is provided with a strip-shaped hollow groove along its length direction, the second fastener includes a vertical ruler tightening bolt and its corresponding fixing piece, and the fixing piece corresponding to the vertical ruler tightening bolt is provided with a threaded hole, The vertical ruler angle steel bracket is provided with a through hole corresponding to the vertical ruler tightening bolt, and one end of the vertical ruler tightening bolt passes through the vertical ruler angle steel bracket and the hollow groove of the vertical ruler successively, and is threadedly connected with the threaded hole of the fixed piece.

Preferably, the vertical ruler angle steel bracket has an L-shaped structure, the horizontal ruler is fixedly connected to the horizontal plane of the vertical ruler angle steel bracket, and the vertical ruler is slidingly connected to the vertical plane of the vertical ruler angle steel bracket.

Preferably, at least one level scale indicator is provided on the level angle bracket, the level scale indicator is close to the side of the level, and the end sharp angle of the level scale indicator is in contact with the level angle bracket. The outside of the vertical face remains on the same vertical line.

Preferably, at least one vertical ruler scale indicator is provided at the end of the bottom surface of the level ruler. Keep the lower edge of the ruler on the same horizontal line.

The utility model is used for determining the actual position of the defect in the welding seam based on the horizontal and depth distances of the defect relative to the probe on the non-planar detection surface.

The utility model uses the right-angled surface formed by the level ruler and the angle steel bracket of the level ruler to be close to the ultrasonic probe, moves and fixes the horizontal and vertical rulers according to the defect horizontal and vertical distances displayed by the ultrasonic detection, and uses the scale indicator to display and calculate the defects in the welding area. actual position in the seam. The positioning scale of the utility model can be applied to traditional A-ultrasound and phased array ultrasonic detection, and the calibration objects cover a series of non-flat butt welds such as longitudinal welds of pipelines, corner welds of arc-shaped pipe seats, butt welds of unequal thickness, etc. It can quickly and accurately determine the actual location of weld defects.

The utility model has the following beneficial effects:

The positioning scale of the utility model is used for ultrasonic detection of non-flat butt welds, which can quickly and accurately determine the position and depth of defects in the weld, eliminates the invariance of the measurement distance caused by the non-planar detection surface, and improves the repair time of the weld. The accuracy of digging and repairing welds.

Description of drawings

Fig. 1 is a perspective view of a non-slab butt weld ultrasonic detection defect location scale;

Fig. 2 is a side view of a non-slab butt weld ultrasonic detection defect location scale;

Fig. 3 is the detailed figure of level bar;

Fig. 4 is the detail drawing of vertical ruler;

Fig. 5 is the schematic diagram of the position of ultrasonic probe;

Figure 6 is a schematic diagram of pipe fillet weld calibration;

Fig. 7 is a detailed schematic diagram of the calibration in Fig. 6 .

detailed description

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

The utility model provides a defect positioning scale for ultrasonic detection of non-flat butt welds, which is suitable for ultrasonic detection of defects in a series of non-flat butt welds such as longitudinal welds of pipelines, arc-shaped pipe seat fillet welds, butt welds of unequal thickness, etc. Determination of horizontal and depth positions. As shown in Figures 1-4, it includes a horizontal ruler 1, a vertical ruler 2, a horizontal ruler angle steel bracket 3, and a vertical ruler angle steel bracket 4. The level angle steel support 3 is arranged on one side of the level 1, so that the level 1 slides on the level angle steel support 3. One end of level ruler 1 is provided with vertical chi angle steel support 4, and one side of vertical chi angle steel support 4 is provided with vertical chi 2, makes vertical chi 2 slide on vertical chi angle steel support 4. The horizontal ruler 1 and the vertical ruler 2 are perpendicular to each other.

The level bar 1 is used to indicate the horizontal position of the defect relative to the front face of the probe. The level 1 is made of steel, and the length of the level 1 can be customized according to requirements. In this embodiment, the length, width, and thickness are 300 mm, 15 mm, and 2 mm, respectively. The indication length of the level ruler 1 is 300mm, the scale of the level ruler 1 close to the end surface of the vertical ruler 2 is 0mm, and the scale far away from the end surface of the vertical ruler 2 is 300mm, and both sides are marked with millimeter-level scales (300mm) and values.

The middle part of the level ruler 1 is provided with a strip-shaped hollow groove along its length direction, and can move horizontally by the clamping and fixing device. The groove width of the hollow groove of level ruler 1 is 5mm, and the groove length is 280mm. The clamping and fixing device on the level 1 includes a level angle steel bracket 3 and at least two groups of level tightening bolts (two groups in this embodiment, namely the first level tightening bolts 1-3, the second level tightening bolts 1 -4), its purpose is to fix the level bar 1 and determine the measurement reference point. The tightening bolt of the level is connected with the threaded hole of the angle steel bracket 3 of the level through the fixed piece and then through the hollow groove of the level 1 (that is, one end of the tightening bolt of the level passes through the hollow groove of the fixed piece and the level 1 in turn) to fix the level The position between ruler 1 and level ruler angle steel bracket 3. A through hole is arranged on the fixed piece corresponding to the tightening bolt of the level ruler.

The end face of the level 1 at the 0mm scale is provided with a groove for the vertical ruler 2 to embed and move along the vertical direction of the level ruler 1, and the groove depth of the groove is consistent with the thickness of the vertical ruler 2.

The material of level ruler angle steel support 3 is steel, is L-shaped structure, and its horizontal plane length 60mm, vertical plane length 20mm, width 25mm, thickness 2mm. There are 2 threaded holes on the center line of the horizontal plane of the level angle steel support 3, which are fixed with the level 1 by tightening bolts (including fixing pieces) of 2 sets of levels. The right-angled surface formed by the vertical plane of the level ruler angle steel bracket 3 and the level ruler 1 fits the front side and the upper side of the ultrasonic probe 5 to determine the measurement reference point during actual use.

At least one level scale indicator is provided on the level angle steel bracket 3 . In this embodiment, two level scale indicators are provided on the level angle steel support 3 .

The two level scale indicators of the level bar 1 (i.e. the first level bar scale indicator 1-1, the second level bar scale indicator 1-2) are arranged on the level bar angle steel bracket 3, which is symmetrical with respect to the level bar 1 layout. The horizontal scale indicator is made of steel and looks like an L shape. The length of its vertical side is 3mm, and the length of the horizontal side is 6mm. on the same vertical line. When in use, the indicated position of the horizontal scale indicator and the front end of the ultrasonic probe 5 keep the same vertical plane.

The vertical ruler 2 is used to indicate the depth position of the defect relative to the lower end surface of the ultrasonic probe 5 . The vertical ruler 2 is made of steel, and its length, width and thickness are respectively 60mm, 10mm and 2mm. The indication length of the vertical ruler 2 is 50mm, wherein the initial scale on the lower end surface of the vertical ruler 2 is 0mm, and the scale near the upper end surface 10mm is 50mm, and both sides are marked with millimeter-level scales (50mm) and values. Other lengths can be substituted upon request. Level ruler angle steel bracket 3 and the 0 scale end of vertical ruler 2 are positioned at the same side of level ruler 1.

The middle part of the vertical ruler 2 is provided with a strip-shaped hollow groove along its length direction, and can move vertically by the clamping and fixing device. The groove width of the hollow groove of vertical ruler 2 is 3mm, the groove length is 50mm, and its distance from the upper and lower end faces is 3mm and 7mm respectively. The purpose is to fix the vertical ruler 2 and determine the measurement reference point. The vertical chi tightening bolt 2-3 passes through the hollow groove of the vertical chi 2 and is connected with the fixed piece by the vertical chi angle steel bracket 4, so as to fix the position between the vertical chi 2 and the vertical chi angle steel bracket 4. The fixed piece corresponding to the vertical ruler tightening bolt 2-3 is provided with a threaded hole, and the vertical ruler angle steel support 4 is provided with a through hole corresponding to the vertical ruler tightening bolt 2-3.

The vertical ruler angle steel bracket 4 is made of steel and has an L-shaped structure. The length of the vertical plane is 10mm, the length of the horizontal plane is 5mm, the width is 10mm, and the thickness is 2mm. The horizontal plane of vertical ruler angle steel support 4 is fixed with horizontal ruler 1, and the center of its vertical surface is provided with 1 place through hole, is fixed with vertical ruler 2 by vertical ruler tightening bolt 2-3 (containing fixed piece).

The end of the bottom surface of the level bar 1 is provided with at least one vertical bar scale indicator. In this embodiment, the level bar 1 is provided with two level bar scale indicators.

2 vertical ruler scale indicators on the vertical ruler 2 (i.e. the first vertical ruler scale indicator 2-1, the second vertical ruler scale indicator 2-2) are arranged at the end of the horizontal ruler 1, relative to the vertical ruler 2 Symmetrical arrangement. The material of the vertical scale indicator is steel, shaped like a straight line, and the length is 3mm. The sharp corner of the vertical scale indicator protruding from the end of the vertical scale 2 is kept on the same horizontal line as the lower edge of the horizontal scale 1. When in use, the vertical scale indicator indicates The position is kept on the same level as the upper end of the ultrasonic probe 5 .

In this embodiment, the level ruler 1 is provided with two level ruler tightening bolts, and the vertical ruler 2 is provided with a vertical ruler tightening bolt 2-3, and the level ruler 1, the vertical ruler 2 and their corresponding angle steel brackets are fixed by the fixing pieces respectively.

The concrete operation of the utility model is:

After the ultrasonic probe 5 emits and receives the defect echo signal, and the ultrasonic detector shows the horizontal and depth distance from the defect to the center point of the lower edge of the front end of the ultrasonic probe 5, record the value. First, use the right-angled surface formed by the level angle steel bracket 3 and the level 1 to fit the front end and upper end of the ultrasonic probe 5, as shown in Figure 5, so as to determine the measurement reference points of the level 1 and the vertical 2. Adjust the level and tighten the bolts, move the relative position between the level 1 and the angle steel bracket 3 of the level and fix it, and keep the indication value of the scale indicator of the level consistent with the defect level indication of the ultrasonic detector. Then adjust the vertical chi and tighten the bolt 2-3, move the relative position between the vertical chi 2 and the vertical chi angle steel support 4 and fix it, keep the vertical chi 2 zero scale end against the weld surface. In this way, the center point of the zero scale end of the vertical ruler 2 and the contact position of the weld are vertically downwards to be the actual defect position, and its depth value is the depth indication of the ultrasonic detector minus the difference between the indication of the vertical scale indicator and the height of the probe.

Taking the ultrasonic testing of pipe fillet welds as an example, the calibration schematic diagram and detailed schematic diagram are shown in Figure 6 and Figure 7. Move the ultrasonic probe 5 to find the defect and record the horizontal distance L _AB and the depth distance L _BC of the defect displayed by the ultrasonic detector relative to the center point of the lower edge of the probe front end.

Adjust the two levels, tighten the bolts and move the level 1 until the scale indicator of the two levels shows L _AB and fix it. Place the right-angled surface formed by level 1 and level bracket 3 (the right angle is at point F) against the upper end surface and front end of ultrasonic probe 5 respectively, adjust the vertical ruler, tighten bolts 2-3 and move vertical ruler 2 to vertical ruler 2 Hold the zero scale against point D on the surface of the weld, then fix the vertical ruler and tighten the bolts 2-3. At this time, point D is the actual defect position vertically downward, and the depth position L _DC =L _BC -L _BD =L _BC -(L _ED -L _EB )=L _BC -(L _ED -L _FA ), where L _BC It has been displayed by the ultrasonic detector, _{LED is the indication value of the vertical ruler scale indicator, and L FA is} the height of the ultrasonic probe 5 . So far, the L _DC value is obtained, that is, the depth distance of the defect below the center point of the zero scale surface of the vertical ruler 2 is determined.

Claims (7)

1. A non-slab butt weld ultrasonic detection defect location scale, it is characterized in that, comprises the horizontal ruler (1) and the vertical ruler (2) that the surface is marked with scale, horizontal ruler (1) and vertical ruler (2) are perpendicular to each other , the bottom surface of the level (1) is provided with a level angle bracket (3) that makes the level (1) slide, and the level angle bracket (3) is provided with a first fastener that fixes the level (1), One end of the level (1) is a 0-scale end, and the 0-scale end of the level (1) is provided with a groove, and a vertical ruler (2) that can slide along the vertical direction of the level (1) is embedded in the groove , and the depth of the groove is the same as the thickness of the vertical ruler (2), the vertical ruler (2) slides on the vertical ruler angle steel bracket (4), the vertical ruler angle steel bracket (4) is fixed on the horizontal ruler (1), The chi angle steel bracket (4) is provided with the second fastener that makes the vertical chi (2) fixed; the 0 scale end of the horizontal chi angle steel bracket (3) and the vertical chi (2) is positioned at the same side of the horizontal chi (1). 2. A kind of non-plate butt weld ultrasonic detection defect localization ruler as claimed in claim 1, is characterized in that, described horizontal ruler (1) middle part offers strip-shaped hollow groove along its length direction; The firmware includes at least two sets of level ruler tightening bolts and each set of level ruler tightening bolts corresponding to the fixed piece, the fixed piece corresponding to the level ruler tightening bolts is provided with through holes, and the level ruler angle steel bracket (3) is provided with level ruler tightening bolts Corresponding to the threaded hole, one end of the level ruler tightening bolt passes through the hollow groove of the fixed plate and the level ruler (1) successively, and is threadedly connected with the threaded hole of the level ruler angle steel bracket (3). 3. A kind of non-plate butt weld ultrasonic detection defect localization scale as claimed in claim 1, it is characterized in that, described level ruler angle steel support (3) is L-shaped structure, level ruler (1) and level ruler angle steel The horizontal plane of support (3) is slidably connected, and the vertical plane of level ruler (1) and level ruler angle steel support (3) forms right-angled surface. 4. A kind of non-plate butt weld ultrasonic detection defect localization ruler as claimed in claim 1, is characterized in that, described vertical ruler (2) middle part is provided with elongated hollow groove along its length direction, and the second tight The firmware includes the vertical ruler tightening bolt (2-3) and its corresponding fixed piece, the fixed piece corresponding to the vertical ruler tightened bolt (2-3) is provided with threaded holes, and the vertical ruler angle steel bracket (4) is provided with a vertical ruler tightening screw. The through hole corresponding to the bolt (2-3), the vertical ruler tightens one end of the bolt (2-3) through the hollow groove of the vertical ruler angle steel bracket (4) and the vertical ruler (2) in turn, and threaded connection with the threaded hole of the fixed piece . 5. A kind of non-plate butt weld ultrasonic detection defect localization scale as claimed in claim 1, it is characterized in that, described vertical ruler angle steel support (4) is L-shaped structure, horizontal ruler (1) and vertical ruler angle steel The horizontal plane of the support (4) is fixedly connected, and the vertical plane of the vertical ruler (2) is slidably connected with the vertical ruler angle steel support (4). 6. A kind of non-plate butt weld ultrasonic detection defect localization ruler as claimed in claim 1, it is characterized in that, described level ruler angle steel support (3) is provided with at least one level ruler scale indicator, level ruler The scale indicator is close to the side of the level ruler (1), and the end sharp angle of the level ruler scale indicator remains on the same vertical line with the vertical plane outside of the level ruler angle steel support (3). 7. A kind of non-flat-plate butt weld ultrasonic detection defect localization scale as claimed in claim 1, is characterized in that, the end of described horizontal ruler (1) bottom surface is provided with at least one vertical ruler scale indicator, vertical ruler The scale indicator is close to the side of the vertical ruler (2), and the sharp angle of the vertical ruler (2) one end of the vertical ruler scale indicator stretches out and the lower edge of the horizontal ruler (1) remains on the same horizontal line.

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